1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * fs/f2fs/f2fs.h 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 */ 8 #ifndef _LINUX_F2FS_H 9 #define _LINUX_F2FS_H 10 11 #include <linux/uio.h> 12 #include <linux/types.h> 13 #include <linux/page-flags.h> 14 #include <linux/buffer_head.h> 15 #include <linux/slab.h> 16 #include <linux/crc32.h> 17 #include <linux/magic.h> 18 #include <linux/kobject.h> 19 #include <linux/sched.h> 20 #include <linux/cred.h> 21 #include <linux/vmalloc.h> 22 #include <linux/bio.h> 23 #include <linux/blkdev.h> 24 #include <linux/quotaops.h> 25 #include <linux/part_stat.h> 26 #include <crypto/hash.h> 27 28 #include <linux/fscrypt.h> 29 #include <linux/fsverity.h> 30 31 struct pagevec; 32 33 #ifdef CONFIG_F2FS_CHECK_FS 34 #define f2fs_bug_on(sbi, condition) BUG_ON(condition) 35 #else 36 #define f2fs_bug_on(sbi, condition) \ 37 do { \ 38 if (WARN_ON(condition)) \ 39 set_sbi_flag(sbi, SBI_NEED_FSCK); \ 40 } while (0) 41 #endif 42 43 enum { 44 FAULT_KMALLOC, 45 FAULT_KVMALLOC, 46 FAULT_PAGE_ALLOC, 47 FAULT_PAGE_GET, 48 FAULT_ALLOC_BIO, /* it's obsolete due to bio_alloc() will never fail */ 49 FAULT_ALLOC_NID, 50 FAULT_ORPHAN, 51 FAULT_BLOCK, 52 FAULT_DIR_DEPTH, 53 FAULT_EVICT_INODE, 54 FAULT_TRUNCATE, 55 FAULT_READ_IO, 56 FAULT_CHECKPOINT, 57 FAULT_DISCARD, 58 FAULT_WRITE_IO, 59 FAULT_SLAB_ALLOC, 60 FAULT_DQUOT_INIT, 61 FAULT_LOCK_OP, 62 FAULT_MAX, 63 }; 64 65 #ifdef CONFIG_F2FS_FAULT_INJECTION 66 #define F2FS_ALL_FAULT_TYPE ((1 << FAULT_MAX) - 1) 67 68 struct f2fs_fault_info { 69 atomic_t inject_ops; 70 unsigned int inject_rate; 71 unsigned int inject_type; 72 }; 73 74 extern const char *f2fs_fault_name[FAULT_MAX]; 75 #define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type))) 76 #endif 77 78 /* 79 * For mount options 80 */ 81 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 82 #define F2FS_MOUNT_DISCARD 0x00000004 83 #define F2FS_MOUNT_NOHEAP 0x00000008 84 #define F2FS_MOUNT_XATTR_USER 0x00000010 85 #define F2FS_MOUNT_POSIX_ACL 0x00000020 86 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 87 #define F2FS_MOUNT_INLINE_XATTR 0x00000080 88 #define F2FS_MOUNT_INLINE_DATA 0x00000100 89 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200 90 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400 91 #define F2FS_MOUNT_NOBARRIER 0x00000800 92 #define F2FS_MOUNT_FASTBOOT 0x00001000 93 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000 94 #define F2FS_MOUNT_DATA_FLUSH 0x00008000 95 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000 96 #define F2FS_MOUNT_USRQUOTA 0x00080000 97 #define F2FS_MOUNT_GRPQUOTA 0x00100000 98 #define F2FS_MOUNT_PRJQUOTA 0x00200000 99 #define F2FS_MOUNT_QUOTA 0x00400000 100 #define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000 101 #define F2FS_MOUNT_RESERVE_ROOT 0x01000000 102 #define F2FS_MOUNT_DISABLE_CHECKPOINT 0x02000000 103 #define F2FS_MOUNT_NORECOVERY 0x04000000 104 #define F2FS_MOUNT_ATGC 0x08000000 105 #define F2FS_MOUNT_MERGE_CHECKPOINT 0x10000000 106 #define F2FS_MOUNT_GC_MERGE 0x20000000 107 #define F2FS_MOUNT_COMPRESS_CACHE 0x40000000 108 109 #define F2FS_OPTION(sbi) ((sbi)->mount_opt) 110 #define clear_opt(sbi, option) (F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option) 111 #define set_opt(sbi, option) (F2FS_OPTION(sbi).opt |= F2FS_MOUNT_##option) 112 #define test_opt(sbi, option) (F2FS_OPTION(sbi).opt & F2FS_MOUNT_##option) 113 114 #define ver_after(a, b) (typecheck(unsigned long long, a) && \ 115 typecheck(unsigned long long, b) && \ 116 ((long long)((a) - (b)) > 0)) 117 118 typedef u32 block_t; /* 119 * should not change u32, since it is the on-disk block 120 * address format, __le32. 121 */ 122 typedef u32 nid_t; 123 124 #define COMPRESS_EXT_NUM 16 125 126 /* 127 * An implementation of an rwsem that is explicitly unfair to readers. This 128 * prevents priority inversion when a low-priority reader acquires the read lock 129 * while sleeping on the write lock but the write lock is needed by 130 * higher-priority clients. 131 */ 132 133 struct f2fs_rwsem { 134 struct rw_semaphore internal_rwsem; 135 wait_queue_head_t read_waiters; 136 }; 137 138 struct f2fs_mount_info { 139 unsigned int opt; 140 int write_io_size_bits; /* Write IO size bits */ 141 block_t root_reserved_blocks; /* root reserved blocks */ 142 kuid_t s_resuid; /* reserved blocks for uid */ 143 kgid_t s_resgid; /* reserved blocks for gid */ 144 int active_logs; /* # of active logs */ 145 int inline_xattr_size; /* inline xattr size */ 146 #ifdef CONFIG_F2FS_FAULT_INJECTION 147 struct f2fs_fault_info fault_info; /* For fault injection */ 148 #endif 149 #ifdef CONFIG_QUOTA 150 /* Names of quota files with journalled quota */ 151 char *s_qf_names[MAXQUOTAS]; 152 int s_jquota_fmt; /* Format of quota to use */ 153 #endif 154 /* For which write hints are passed down to block layer */ 155 int whint_mode; 156 int alloc_mode; /* segment allocation policy */ 157 int fsync_mode; /* fsync policy */ 158 int fs_mode; /* fs mode: LFS or ADAPTIVE */ 159 int bggc_mode; /* bggc mode: off, on or sync */ 160 int discard_unit; /* 161 * discard command's offset/size should 162 * be aligned to this unit: block, 163 * segment or section 164 */ 165 struct fscrypt_dummy_policy dummy_enc_policy; /* test dummy encryption */ 166 block_t unusable_cap_perc; /* percentage for cap */ 167 block_t unusable_cap; /* Amount of space allowed to be 168 * unusable when disabling checkpoint 169 */ 170 171 /* For compression */ 172 unsigned char compress_algorithm; /* algorithm type */ 173 unsigned char compress_log_size; /* cluster log size */ 174 unsigned char compress_level; /* compress level */ 175 bool compress_chksum; /* compressed data chksum */ 176 unsigned char compress_ext_cnt; /* extension count */ 177 unsigned char nocompress_ext_cnt; /* nocompress extension count */ 178 int compress_mode; /* compression mode */ 179 unsigned char extensions[COMPRESS_EXT_NUM][F2FS_EXTENSION_LEN]; /* extensions */ 180 unsigned char noextensions[COMPRESS_EXT_NUM][F2FS_EXTENSION_LEN]; /* extensions */ 181 }; 182 183 #define F2FS_FEATURE_ENCRYPT 0x0001 184 #define F2FS_FEATURE_BLKZONED 0x0002 185 #define F2FS_FEATURE_ATOMIC_WRITE 0x0004 186 #define F2FS_FEATURE_EXTRA_ATTR 0x0008 187 #define F2FS_FEATURE_PRJQUOTA 0x0010 188 #define F2FS_FEATURE_INODE_CHKSUM 0x0020 189 #define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040 190 #define F2FS_FEATURE_QUOTA_INO 0x0080 191 #define F2FS_FEATURE_INODE_CRTIME 0x0100 192 #define F2FS_FEATURE_LOST_FOUND 0x0200 193 #define F2FS_FEATURE_VERITY 0x0400 194 #define F2FS_FEATURE_SB_CHKSUM 0x0800 195 #define F2FS_FEATURE_CASEFOLD 0x1000 196 #define F2FS_FEATURE_COMPRESSION 0x2000 197 #define F2FS_FEATURE_RO 0x4000 198 199 #define __F2FS_HAS_FEATURE(raw_super, mask) \ 200 ((raw_super->feature & cpu_to_le32(mask)) != 0) 201 #define F2FS_HAS_FEATURE(sbi, mask) __F2FS_HAS_FEATURE(sbi->raw_super, mask) 202 #define F2FS_SET_FEATURE(sbi, mask) \ 203 (sbi->raw_super->feature |= cpu_to_le32(mask)) 204 #define F2FS_CLEAR_FEATURE(sbi, mask) \ 205 (sbi->raw_super->feature &= ~cpu_to_le32(mask)) 206 207 /* 208 * Default values for user and/or group using reserved blocks 209 */ 210 #define F2FS_DEF_RESUID 0 211 #define F2FS_DEF_RESGID 0 212 213 /* 214 * For checkpoint manager 215 */ 216 enum { 217 NAT_BITMAP, 218 SIT_BITMAP 219 }; 220 221 #define CP_UMOUNT 0x00000001 222 #define CP_FASTBOOT 0x00000002 223 #define CP_SYNC 0x00000004 224 #define CP_RECOVERY 0x00000008 225 #define CP_DISCARD 0x00000010 226 #define CP_TRIMMED 0x00000020 227 #define CP_PAUSE 0x00000040 228 #define CP_RESIZE 0x00000080 229 230 #define MAX_DISCARD_BLOCKS(sbi) BLKS_PER_SEC(sbi) 231 #define DEF_MAX_DISCARD_REQUEST 8 /* issue 8 discards per round */ 232 #define DEF_MIN_DISCARD_ISSUE_TIME 50 /* 50 ms, if exists */ 233 #define DEF_MID_DISCARD_ISSUE_TIME 500 /* 500 ms, if device busy */ 234 #define DEF_MAX_DISCARD_ISSUE_TIME 60000 /* 60 s, if no candidates */ 235 #define DEF_DISCARD_URGENT_UTIL 80 /* do more discard over 80% */ 236 #define DEF_CP_INTERVAL 60 /* 60 secs */ 237 #define DEF_IDLE_INTERVAL 5 /* 5 secs */ 238 #define DEF_DISABLE_INTERVAL 5 /* 5 secs */ 239 #define DEF_DISABLE_QUICK_INTERVAL 1 /* 1 secs */ 240 #define DEF_UMOUNT_DISCARD_TIMEOUT 5 /* 5 secs */ 241 242 struct cp_control { 243 int reason; 244 __u64 trim_start; 245 __u64 trim_end; 246 __u64 trim_minlen; 247 }; 248 249 /* 250 * indicate meta/data type 251 */ 252 enum { 253 META_CP, 254 META_NAT, 255 META_SIT, 256 META_SSA, 257 META_MAX, 258 META_POR, 259 DATA_GENERIC, /* check range only */ 260 DATA_GENERIC_ENHANCE, /* strong check on range and segment bitmap */ 261 DATA_GENERIC_ENHANCE_READ, /* 262 * strong check on range and segment 263 * bitmap but no warning due to race 264 * condition of read on truncated area 265 * by extent_cache 266 */ 267 META_GENERIC, 268 }; 269 270 /* for the list of ino */ 271 enum { 272 ORPHAN_INO, /* for orphan ino list */ 273 APPEND_INO, /* for append ino list */ 274 UPDATE_INO, /* for update ino list */ 275 TRANS_DIR_INO, /* for trasactions dir ino list */ 276 FLUSH_INO, /* for multiple device flushing */ 277 MAX_INO_ENTRY, /* max. list */ 278 }; 279 280 struct ino_entry { 281 struct list_head list; /* list head */ 282 nid_t ino; /* inode number */ 283 unsigned int dirty_device; /* dirty device bitmap */ 284 }; 285 286 /* for the list of inodes to be GCed */ 287 struct inode_entry { 288 struct list_head list; /* list head */ 289 struct inode *inode; /* vfs inode pointer */ 290 }; 291 292 struct fsync_node_entry { 293 struct list_head list; /* list head */ 294 struct page *page; /* warm node page pointer */ 295 unsigned int seq_id; /* sequence id */ 296 }; 297 298 struct ckpt_req { 299 struct completion wait; /* completion for checkpoint done */ 300 struct llist_node llnode; /* llist_node to be linked in wait queue */ 301 int ret; /* return code of checkpoint */ 302 ktime_t queue_time; /* request queued time */ 303 }; 304 305 struct ckpt_req_control { 306 struct task_struct *f2fs_issue_ckpt; /* checkpoint task */ 307 int ckpt_thread_ioprio; /* checkpoint merge thread ioprio */ 308 wait_queue_head_t ckpt_wait_queue; /* waiting queue for wake-up */ 309 atomic_t issued_ckpt; /* # of actually issued ckpts */ 310 atomic_t total_ckpt; /* # of total ckpts */ 311 atomic_t queued_ckpt; /* # of queued ckpts */ 312 struct llist_head issue_list; /* list for command issue */ 313 spinlock_t stat_lock; /* lock for below checkpoint time stats */ 314 unsigned int cur_time; /* cur wait time in msec for currently issued checkpoint */ 315 unsigned int peak_time; /* peak wait time in msec until now */ 316 }; 317 318 /* for the bitmap indicate blocks to be discarded */ 319 struct discard_entry { 320 struct list_head list; /* list head */ 321 block_t start_blkaddr; /* start blockaddr of current segment */ 322 unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */ 323 }; 324 325 /* default discard granularity of inner discard thread, unit: block count */ 326 #define DEFAULT_DISCARD_GRANULARITY 16 327 328 /* max discard pend list number */ 329 #define MAX_PLIST_NUM 512 330 #define plist_idx(blk_num) ((blk_num) >= MAX_PLIST_NUM ? \ 331 (MAX_PLIST_NUM - 1) : ((blk_num) - 1)) 332 333 enum { 334 D_PREP, /* initial */ 335 D_PARTIAL, /* partially submitted */ 336 D_SUBMIT, /* all submitted */ 337 D_DONE, /* finished */ 338 }; 339 340 struct discard_info { 341 block_t lstart; /* logical start address */ 342 block_t len; /* length */ 343 block_t start; /* actual start address in dev */ 344 }; 345 346 struct discard_cmd { 347 struct rb_node rb_node; /* rb node located in rb-tree */ 348 union { 349 struct { 350 block_t lstart; /* logical start address */ 351 block_t len; /* length */ 352 block_t start; /* actual start address in dev */ 353 }; 354 struct discard_info di; /* discard info */ 355 356 }; 357 struct list_head list; /* command list */ 358 struct completion wait; /* compleation */ 359 struct block_device *bdev; /* bdev */ 360 unsigned short ref; /* reference count */ 361 unsigned char state; /* state */ 362 unsigned char queued; /* queued discard */ 363 int error; /* bio error */ 364 spinlock_t lock; /* for state/bio_ref updating */ 365 unsigned short bio_ref; /* bio reference count */ 366 }; 367 368 enum { 369 DPOLICY_BG, 370 DPOLICY_FORCE, 371 DPOLICY_FSTRIM, 372 DPOLICY_UMOUNT, 373 MAX_DPOLICY, 374 }; 375 376 struct discard_policy { 377 int type; /* type of discard */ 378 unsigned int min_interval; /* used for candidates exist */ 379 unsigned int mid_interval; /* used for device busy */ 380 unsigned int max_interval; /* used for candidates not exist */ 381 unsigned int max_requests; /* # of discards issued per round */ 382 unsigned int io_aware_gran; /* minimum granularity discard not be aware of I/O */ 383 bool io_aware; /* issue discard in idle time */ 384 bool sync; /* submit discard with REQ_SYNC flag */ 385 bool ordered; /* issue discard by lba order */ 386 bool timeout; /* discard timeout for put_super */ 387 unsigned int granularity; /* discard granularity */ 388 }; 389 390 struct discard_cmd_control { 391 struct task_struct *f2fs_issue_discard; /* discard thread */ 392 struct list_head entry_list; /* 4KB discard entry list */ 393 struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */ 394 struct list_head wait_list; /* store on-flushing entries */ 395 struct list_head fstrim_list; /* in-flight discard from fstrim */ 396 wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */ 397 unsigned int discard_wake; /* to wake up discard thread */ 398 struct mutex cmd_lock; 399 unsigned int nr_discards; /* # of discards in the list */ 400 unsigned int max_discards; /* max. discards to be issued */ 401 unsigned int discard_granularity; /* discard granularity */ 402 unsigned int undiscard_blks; /* # of undiscard blocks */ 403 unsigned int next_pos; /* next discard position */ 404 atomic_t issued_discard; /* # of issued discard */ 405 atomic_t queued_discard; /* # of queued discard */ 406 atomic_t discard_cmd_cnt; /* # of cached cmd count */ 407 struct rb_root_cached root; /* root of discard rb-tree */ 408 bool rbtree_check; /* config for consistence check */ 409 }; 410 411 /* for the list of fsync inodes, used only during recovery */ 412 struct fsync_inode_entry { 413 struct list_head list; /* list head */ 414 struct inode *inode; /* vfs inode pointer */ 415 block_t blkaddr; /* block address locating the last fsync */ 416 block_t last_dentry; /* block address locating the last dentry */ 417 }; 418 419 #define nats_in_cursum(jnl) (le16_to_cpu((jnl)->n_nats)) 420 #define sits_in_cursum(jnl) (le16_to_cpu((jnl)->n_sits)) 421 422 #define nat_in_journal(jnl, i) ((jnl)->nat_j.entries[i].ne) 423 #define nid_in_journal(jnl, i) ((jnl)->nat_j.entries[i].nid) 424 #define sit_in_journal(jnl, i) ((jnl)->sit_j.entries[i].se) 425 #define segno_in_journal(jnl, i) ((jnl)->sit_j.entries[i].segno) 426 427 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl)) 428 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl)) 429 430 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i) 431 { 432 int before = nats_in_cursum(journal); 433 434 journal->n_nats = cpu_to_le16(before + i); 435 return before; 436 } 437 438 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i) 439 { 440 int before = sits_in_cursum(journal); 441 442 journal->n_sits = cpu_to_le16(before + i); 443 return before; 444 } 445 446 static inline bool __has_cursum_space(struct f2fs_journal *journal, 447 int size, int type) 448 { 449 if (type == NAT_JOURNAL) 450 return size <= MAX_NAT_JENTRIES(journal); 451 return size <= MAX_SIT_JENTRIES(journal); 452 } 453 454 /* for inline stuff */ 455 #define DEF_INLINE_RESERVED_SIZE 1 456 static inline int get_extra_isize(struct inode *inode); 457 static inline int get_inline_xattr_addrs(struct inode *inode); 458 #define MAX_INLINE_DATA(inode) (sizeof(__le32) * \ 459 (CUR_ADDRS_PER_INODE(inode) - \ 460 get_inline_xattr_addrs(inode) - \ 461 DEF_INLINE_RESERVED_SIZE)) 462 463 /* for inline dir */ 464 #define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \ 465 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ 466 BITS_PER_BYTE + 1)) 467 #define INLINE_DENTRY_BITMAP_SIZE(inode) \ 468 DIV_ROUND_UP(NR_INLINE_DENTRY(inode), BITS_PER_BYTE) 469 #define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \ 470 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ 471 NR_INLINE_DENTRY(inode) + \ 472 INLINE_DENTRY_BITMAP_SIZE(inode))) 473 474 /* 475 * For INODE and NODE manager 476 */ 477 /* for directory operations */ 478 479 struct f2fs_filename { 480 /* 481 * The filename the user specified. This is NULL for some 482 * filesystem-internal operations, e.g. converting an inline directory 483 * to a non-inline one, or roll-forward recovering an encrypted dentry. 484 */ 485 const struct qstr *usr_fname; 486 487 /* 488 * The on-disk filename. For encrypted directories, this is encrypted. 489 * This may be NULL for lookups in an encrypted dir without the key. 490 */ 491 struct fscrypt_str disk_name; 492 493 /* The dirhash of this filename */ 494 f2fs_hash_t hash; 495 496 #ifdef CONFIG_FS_ENCRYPTION 497 /* 498 * For lookups in encrypted directories: either the buffer backing 499 * disk_name, or a buffer that holds the decoded no-key name. 500 */ 501 struct fscrypt_str crypto_buf; 502 #endif 503 #ifdef CONFIG_UNICODE 504 /* 505 * For casefolded directories: the casefolded name, but it's left NULL 506 * if the original name is not valid Unicode, if the directory is both 507 * casefolded and encrypted and its encryption key is unavailable, or if 508 * the filesystem is doing an internal operation where usr_fname is also 509 * NULL. In all these cases we fall back to treating the name as an 510 * opaque byte sequence. 511 */ 512 struct fscrypt_str cf_name; 513 #endif 514 }; 515 516 struct f2fs_dentry_ptr { 517 struct inode *inode; 518 void *bitmap; 519 struct f2fs_dir_entry *dentry; 520 __u8 (*filename)[F2FS_SLOT_LEN]; 521 int max; 522 int nr_bitmap; 523 }; 524 525 static inline void make_dentry_ptr_block(struct inode *inode, 526 struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t) 527 { 528 d->inode = inode; 529 d->max = NR_DENTRY_IN_BLOCK; 530 d->nr_bitmap = SIZE_OF_DENTRY_BITMAP; 531 d->bitmap = t->dentry_bitmap; 532 d->dentry = t->dentry; 533 d->filename = t->filename; 534 } 535 536 static inline void make_dentry_ptr_inline(struct inode *inode, 537 struct f2fs_dentry_ptr *d, void *t) 538 { 539 int entry_cnt = NR_INLINE_DENTRY(inode); 540 int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode); 541 int reserved_size = INLINE_RESERVED_SIZE(inode); 542 543 d->inode = inode; 544 d->max = entry_cnt; 545 d->nr_bitmap = bitmap_size; 546 d->bitmap = t; 547 d->dentry = t + bitmap_size + reserved_size; 548 d->filename = t + bitmap_size + reserved_size + 549 SIZE_OF_DIR_ENTRY * entry_cnt; 550 } 551 552 /* 553 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 554 * as its node offset to distinguish from index node blocks. 555 * But some bits are used to mark the node block. 556 */ 557 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ 558 >> OFFSET_BIT_SHIFT) 559 enum { 560 ALLOC_NODE, /* allocate a new node page if needed */ 561 LOOKUP_NODE, /* look up a node without readahead */ 562 LOOKUP_NODE_RA, /* 563 * look up a node with readahead called 564 * by get_data_block. 565 */ 566 }; 567 568 #define DEFAULT_RETRY_IO_COUNT 8 /* maximum retry read IO or flush count */ 569 570 /* congestion wait timeout value, default: 20ms */ 571 #define DEFAULT_IO_TIMEOUT (msecs_to_jiffies(20)) 572 573 /* maximum retry quota flush count */ 574 #define DEFAULT_RETRY_QUOTA_FLUSH_COUNT 8 575 576 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */ 577 578 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ 579 580 /* dirty segments threshold for triggering CP */ 581 #define DEFAULT_DIRTY_THRESHOLD 4 582 583 /* for in-memory extent cache entry */ 584 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */ 585 586 /* number of extent info in extent cache we try to shrink */ 587 #define EXTENT_CACHE_SHRINK_NUMBER 128 588 589 struct rb_entry { 590 struct rb_node rb_node; /* rb node located in rb-tree */ 591 union { 592 struct { 593 unsigned int ofs; /* start offset of the entry */ 594 unsigned int len; /* length of the entry */ 595 }; 596 unsigned long long key; /* 64-bits key */ 597 } __packed; 598 }; 599 600 struct extent_info { 601 unsigned int fofs; /* start offset in a file */ 602 unsigned int len; /* length of the extent */ 603 u32 blk; /* start block address of the extent */ 604 #ifdef CONFIG_F2FS_FS_COMPRESSION 605 unsigned int c_len; /* physical extent length of compressed blocks */ 606 #endif 607 }; 608 609 struct extent_node { 610 struct rb_node rb_node; /* rb node located in rb-tree */ 611 struct extent_info ei; /* extent info */ 612 struct list_head list; /* node in global extent list of sbi */ 613 struct extent_tree *et; /* extent tree pointer */ 614 }; 615 616 struct extent_tree { 617 nid_t ino; /* inode number */ 618 struct rb_root_cached root; /* root of extent info rb-tree */ 619 struct extent_node *cached_en; /* recently accessed extent node */ 620 struct extent_info largest; /* largested extent info */ 621 struct list_head list; /* to be used by sbi->zombie_list */ 622 rwlock_t lock; /* protect extent info rb-tree */ 623 atomic_t node_cnt; /* # of extent node in rb-tree*/ 624 bool largest_updated; /* largest extent updated */ 625 }; 626 627 /* 628 * This structure is taken from ext4_map_blocks. 629 * 630 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks(). 631 */ 632 #define F2FS_MAP_NEW (1 << BH_New) 633 #define F2FS_MAP_MAPPED (1 << BH_Mapped) 634 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten) 635 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\ 636 F2FS_MAP_UNWRITTEN) 637 638 struct f2fs_map_blocks { 639 struct block_device *m_bdev; /* for multi-device dio */ 640 block_t m_pblk; 641 block_t m_lblk; 642 unsigned int m_len; 643 unsigned int m_flags; 644 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */ 645 pgoff_t *m_next_extent; /* point to next possible extent */ 646 int m_seg_type; 647 bool m_may_create; /* indicate it is from write path */ 648 bool m_multidev_dio; /* indicate it allows multi-device dio */ 649 }; 650 651 /* for flag in get_data_block */ 652 enum { 653 F2FS_GET_BLOCK_DEFAULT, 654 F2FS_GET_BLOCK_FIEMAP, 655 F2FS_GET_BLOCK_BMAP, 656 F2FS_GET_BLOCK_DIO, 657 F2FS_GET_BLOCK_PRE_DIO, 658 F2FS_GET_BLOCK_PRE_AIO, 659 F2FS_GET_BLOCK_PRECACHE, 660 }; 661 662 /* 663 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. 664 */ 665 #define FADVISE_COLD_BIT 0x01 666 #define FADVISE_LOST_PINO_BIT 0x02 667 #define FADVISE_ENCRYPT_BIT 0x04 668 #define FADVISE_ENC_NAME_BIT 0x08 669 #define FADVISE_KEEP_SIZE_BIT 0x10 670 #define FADVISE_HOT_BIT 0x20 671 #define FADVISE_VERITY_BIT 0x40 672 #define FADVISE_TRUNC_BIT 0x80 673 674 #define FADVISE_MODIFIABLE_BITS (FADVISE_COLD_BIT | FADVISE_HOT_BIT) 675 676 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT) 677 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT) 678 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT) 679 680 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT) 681 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT) 682 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT) 683 684 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT) 685 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT) 686 687 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT) 688 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT) 689 690 #define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT) 691 #define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT) 692 693 #define file_is_hot(inode) is_file(inode, FADVISE_HOT_BIT) 694 #define file_set_hot(inode) set_file(inode, FADVISE_HOT_BIT) 695 #define file_clear_hot(inode) clear_file(inode, FADVISE_HOT_BIT) 696 697 #define file_is_verity(inode) is_file(inode, FADVISE_VERITY_BIT) 698 #define file_set_verity(inode) set_file(inode, FADVISE_VERITY_BIT) 699 700 #define file_should_truncate(inode) is_file(inode, FADVISE_TRUNC_BIT) 701 #define file_need_truncate(inode) set_file(inode, FADVISE_TRUNC_BIT) 702 #define file_dont_truncate(inode) clear_file(inode, FADVISE_TRUNC_BIT) 703 704 #define DEF_DIR_LEVEL 0 705 706 enum { 707 GC_FAILURE_PIN, 708 GC_FAILURE_ATOMIC, 709 MAX_GC_FAILURE 710 }; 711 712 /* used for f2fs_inode_info->flags */ 713 enum { 714 FI_NEW_INODE, /* indicate newly allocated inode */ 715 FI_DIRTY_INODE, /* indicate inode is dirty or not */ 716 FI_AUTO_RECOVER, /* indicate inode is recoverable */ 717 FI_DIRTY_DIR, /* indicate directory has dirty pages */ 718 FI_INC_LINK, /* need to increment i_nlink */ 719 FI_ACL_MODE, /* indicate acl mode */ 720 FI_NO_ALLOC, /* should not allocate any blocks */ 721 FI_FREE_NID, /* free allocated nide */ 722 FI_NO_EXTENT, /* not to use the extent cache */ 723 FI_INLINE_XATTR, /* used for inline xattr */ 724 FI_INLINE_DATA, /* used for inline data*/ 725 FI_INLINE_DENTRY, /* used for inline dentry */ 726 FI_APPEND_WRITE, /* inode has appended data */ 727 FI_UPDATE_WRITE, /* inode has in-place-update data */ 728 FI_NEED_IPU, /* used for ipu per file */ 729 FI_ATOMIC_FILE, /* indicate atomic file */ 730 FI_ATOMIC_COMMIT, /* indicate the state of atomical committing */ 731 FI_VOLATILE_FILE, /* indicate volatile file */ 732 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */ 733 FI_DROP_CACHE, /* drop dirty page cache */ 734 FI_DATA_EXIST, /* indicate data exists */ 735 FI_INLINE_DOTS, /* indicate inline dot dentries */ 736 FI_DO_DEFRAG, /* indicate defragment is running */ 737 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */ 738 FI_PREALLOCATED_ALL, /* all blocks for write were preallocated */ 739 FI_HOT_DATA, /* indicate file is hot */ 740 FI_EXTRA_ATTR, /* indicate file has extra attribute */ 741 FI_PROJ_INHERIT, /* indicate file inherits projectid */ 742 FI_PIN_FILE, /* indicate file should not be gced */ 743 FI_ATOMIC_REVOKE_REQUEST, /* request to drop atomic data */ 744 FI_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */ 745 FI_COMPRESSED_FILE, /* indicate file's data can be compressed */ 746 FI_COMPRESS_CORRUPT, /* indicate compressed cluster is corrupted */ 747 FI_MMAP_FILE, /* indicate file was mmapped */ 748 FI_ENABLE_COMPRESS, /* enable compression in "user" compression mode */ 749 FI_COMPRESS_RELEASED, /* compressed blocks were released */ 750 FI_ALIGNED_WRITE, /* enable aligned write */ 751 FI_MAX, /* max flag, never be used */ 752 }; 753 754 struct f2fs_inode_info { 755 struct inode vfs_inode; /* serve a vfs inode */ 756 unsigned long i_flags; /* keep an inode flags for ioctl */ 757 unsigned char i_advise; /* use to give file attribute hints */ 758 unsigned char i_dir_level; /* use for dentry level for large dir */ 759 unsigned int i_current_depth; /* only for directory depth */ 760 /* for gc failure statistic */ 761 unsigned int i_gc_failures[MAX_GC_FAILURE]; 762 unsigned int i_pino; /* parent inode number */ 763 umode_t i_acl_mode; /* keep file acl mode temporarily */ 764 765 /* Use below internally in f2fs*/ 766 unsigned long flags[BITS_TO_LONGS(FI_MAX)]; /* use to pass per-file flags */ 767 struct f2fs_rwsem i_sem; /* protect fi info */ 768 atomic_t dirty_pages; /* # of dirty pages */ 769 f2fs_hash_t chash; /* hash value of given file name */ 770 unsigned int clevel; /* maximum level of given file name */ 771 struct task_struct *task; /* lookup and create consistency */ 772 struct task_struct *cp_task; /* separate cp/wb IO stats*/ 773 nid_t i_xattr_nid; /* node id that contains xattrs */ 774 loff_t last_disk_size; /* lastly written file size */ 775 spinlock_t i_size_lock; /* protect last_disk_size */ 776 777 #ifdef CONFIG_QUOTA 778 struct dquot *i_dquot[MAXQUOTAS]; 779 780 /* quota space reservation, managed internally by quota code */ 781 qsize_t i_reserved_quota; 782 #endif 783 struct list_head dirty_list; /* dirty list for dirs and files */ 784 struct list_head gdirty_list; /* linked in global dirty list */ 785 struct list_head inmem_ilist; /* list for inmem inodes */ 786 struct list_head inmem_pages; /* inmemory pages managed by f2fs */ 787 struct task_struct *inmem_task; /* store inmemory task */ 788 struct mutex inmem_lock; /* lock for inmemory pages */ 789 struct extent_tree *extent_tree; /* cached extent_tree entry */ 790 791 /* avoid racing between foreground op and gc */ 792 struct f2fs_rwsem i_gc_rwsem[2]; 793 struct f2fs_rwsem i_xattr_sem; /* avoid racing between reading and changing EAs */ 794 795 int i_extra_isize; /* size of extra space located in i_addr */ 796 kprojid_t i_projid; /* id for project quota */ 797 int i_inline_xattr_size; /* inline xattr size */ 798 struct timespec64 i_crtime; /* inode creation time */ 799 struct timespec64 i_disk_time[4];/* inode disk times */ 800 801 /* for file compress */ 802 atomic_t i_compr_blocks; /* # of compressed blocks */ 803 unsigned char i_compress_algorithm; /* algorithm type */ 804 unsigned char i_log_cluster_size; /* log of cluster size */ 805 unsigned char i_compress_level; /* compress level (lz4hc,zstd) */ 806 unsigned short i_compress_flag; /* compress flag */ 807 unsigned int i_cluster_size; /* cluster size */ 808 }; 809 810 static inline void get_extent_info(struct extent_info *ext, 811 struct f2fs_extent *i_ext) 812 { 813 ext->fofs = le32_to_cpu(i_ext->fofs); 814 ext->blk = le32_to_cpu(i_ext->blk); 815 ext->len = le32_to_cpu(i_ext->len); 816 } 817 818 static inline void set_raw_extent(struct extent_info *ext, 819 struct f2fs_extent *i_ext) 820 { 821 i_ext->fofs = cpu_to_le32(ext->fofs); 822 i_ext->blk = cpu_to_le32(ext->blk); 823 i_ext->len = cpu_to_le32(ext->len); 824 } 825 826 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs, 827 u32 blk, unsigned int len) 828 { 829 ei->fofs = fofs; 830 ei->blk = blk; 831 ei->len = len; 832 #ifdef CONFIG_F2FS_FS_COMPRESSION 833 ei->c_len = 0; 834 #endif 835 } 836 837 static inline bool __is_discard_mergeable(struct discard_info *back, 838 struct discard_info *front, unsigned int max_len) 839 { 840 return (back->lstart + back->len == front->lstart) && 841 (back->len + front->len <= max_len); 842 } 843 844 static inline bool __is_discard_back_mergeable(struct discard_info *cur, 845 struct discard_info *back, unsigned int max_len) 846 { 847 return __is_discard_mergeable(back, cur, max_len); 848 } 849 850 static inline bool __is_discard_front_mergeable(struct discard_info *cur, 851 struct discard_info *front, unsigned int max_len) 852 { 853 return __is_discard_mergeable(cur, front, max_len); 854 } 855 856 static inline bool __is_extent_mergeable(struct extent_info *back, 857 struct extent_info *front) 858 { 859 #ifdef CONFIG_F2FS_FS_COMPRESSION 860 if (back->c_len && back->len != back->c_len) 861 return false; 862 if (front->c_len && front->len != front->c_len) 863 return false; 864 #endif 865 return (back->fofs + back->len == front->fofs && 866 back->blk + back->len == front->blk); 867 } 868 869 static inline bool __is_back_mergeable(struct extent_info *cur, 870 struct extent_info *back) 871 { 872 return __is_extent_mergeable(back, cur); 873 } 874 875 static inline bool __is_front_mergeable(struct extent_info *cur, 876 struct extent_info *front) 877 { 878 return __is_extent_mergeable(cur, front); 879 } 880 881 extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync); 882 static inline void __try_update_largest_extent(struct extent_tree *et, 883 struct extent_node *en) 884 { 885 if (en->ei.len > et->largest.len) { 886 et->largest = en->ei; 887 et->largest_updated = true; 888 } 889 } 890 891 /* 892 * For free nid management 893 */ 894 enum nid_state { 895 FREE_NID, /* newly added to free nid list */ 896 PREALLOC_NID, /* it is preallocated */ 897 MAX_NID_STATE, 898 }; 899 900 enum nat_state { 901 TOTAL_NAT, 902 DIRTY_NAT, 903 RECLAIMABLE_NAT, 904 MAX_NAT_STATE, 905 }; 906 907 struct f2fs_nm_info { 908 block_t nat_blkaddr; /* base disk address of NAT */ 909 nid_t max_nid; /* maximum possible node ids */ 910 nid_t available_nids; /* # of available node ids */ 911 nid_t next_scan_nid; /* the next nid to be scanned */ 912 unsigned int ram_thresh; /* control the memory footprint */ 913 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */ 914 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */ 915 916 /* NAT cache management */ 917 struct radix_tree_root nat_root;/* root of the nat entry cache */ 918 struct radix_tree_root nat_set_root;/* root of the nat set cache */ 919 struct f2fs_rwsem nat_tree_lock; /* protect nat entry tree */ 920 struct list_head nat_entries; /* cached nat entry list (clean) */ 921 spinlock_t nat_list_lock; /* protect clean nat entry list */ 922 unsigned int nat_cnt[MAX_NAT_STATE]; /* the # of cached nat entries */ 923 unsigned int nat_blocks; /* # of nat blocks */ 924 925 /* free node ids management */ 926 struct radix_tree_root free_nid_root;/* root of the free_nid cache */ 927 struct list_head free_nid_list; /* list for free nids excluding preallocated nids */ 928 unsigned int nid_cnt[MAX_NID_STATE]; /* the number of free node id */ 929 spinlock_t nid_list_lock; /* protect nid lists ops */ 930 struct mutex build_lock; /* lock for build free nids */ 931 unsigned char **free_nid_bitmap; 932 unsigned char *nat_block_bitmap; 933 unsigned short *free_nid_count; /* free nid count of NAT block */ 934 935 /* for checkpoint */ 936 char *nat_bitmap; /* NAT bitmap pointer */ 937 938 unsigned int nat_bits_blocks; /* # of nat bits blocks */ 939 unsigned char *nat_bits; /* NAT bits blocks */ 940 unsigned char *full_nat_bits; /* full NAT pages */ 941 unsigned char *empty_nat_bits; /* empty NAT pages */ 942 #ifdef CONFIG_F2FS_CHECK_FS 943 char *nat_bitmap_mir; /* NAT bitmap mirror */ 944 #endif 945 int bitmap_size; /* bitmap size */ 946 }; 947 948 /* 949 * this structure is used as one of function parameters. 950 * all the information are dedicated to a given direct node block determined 951 * by the data offset in a file. 952 */ 953 struct dnode_of_data { 954 struct inode *inode; /* vfs inode pointer */ 955 struct page *inode_page; /* its inode page, NULL is possible */ 956 struct page *node_page; /* cached direct node page */ 957 nid_t nid; /* node id of the direct node block */ 958 unsigned int ofs_in_node; /* data offset in the node page */ 959 bool inode_page_locked; /* inode page is locked or not */ 960 bool node_changed; /* is node block changed */ 961 char cur_level; /* level of hole node page */ 962 char max_level; /* level of current page located */ 963 block_t data_blkaddr; /* block address of the node block */ 964 }; 965 966 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, 967 struct page *ipage, struct page *npage, nid_t nid) 968 { 969 memset(dn, 0, sizeof(*dn)); 970 dn->inode = inode; 971 dn->inode_page = ipage; 972 dn->node_page = npage; 973 dn->nid = nid; 974 } 975 976 /* 977 * For SIT manager 978 * 979 * By default, there are 6 active log areas across the whole main area. 980 * When considering hot and cold data separation to reduce cleaning overhead, 981 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, 982 * respectively. 983 * In the current design, you should not change the numbers intentionally. 984 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 985 * logs individually according to the underlying devices. (default: 6) 986 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for 987 * data and 8 for node logs. 988 */ 989 #define NR_CURSEG_DATA_TYPE (3) 990 #define NR_CURSEG_NODE_TYPE (3) 991 #define NR_CURSEG_INMEM_TYPE (2) 992 #define NR_CURSEG_RO_TYPE (2) 993 #define NR_CURSEG_PERSIST_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) 994 #define NR_CURSEG_TYPE (NR_CURSEG_INMEM_TYPE + NR_CURSEG_PERSIST_TYPE) 995 996 enum { 997 CURSEG_HOT_DATA = 0, /* directory entry blocks */ 998 CURSEG_WARM_DATA, /* data blocks */ 999 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ 1000 CURSEG_HOT_NODE, /* direct node blocks of directory files */ 1001 CURSEG_WARM_NODE, /* direct node blocks of normal files */ 1002 CURSEG_COLD_NODE, /* indirect node blocks */ 1003 NR_PERSISTENT_LOG, /* number of persistent log */ 1004 CURSEG_COLD_DATA_PINNED = NR_PERSISTENT_LOG, 1005 /* pinned file that needs consecutive block address */ 1006 CURSEG_ALL_DATA_ATGC, /* SSR alloctor in hot/warm/cold data area */ 1007 NO_CHECK_TYPE, /* number of persistent & inmem log */ 1008 }; 1009 1010 struct flush_cmd { 1011 struct completion wait; 1012 struct llist_node llnode; 1013 nid_t ino; 1014 int ret; 1015 }; 1016 1017 struct flush_cmd_control { 1018 struct task_struct *f2fs_issue_flush; /* flush thread */ 1019 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ 1020 atomic_t issued_flush; /* # of issued flushes */ 1021 atomic_t queued_flush; /* # of queued flushes */ 1022 struct llist_head issue_list; /* list for command issue */ 1023 struct llist_node *dispatch_list; /* list for command dispatch */ 1024 }; 1025 1026 struct f2fs_sm_info { 1027 struct sit_info *sit_info; /* whole segment information */ 1028 struct free_segmap_info *free_info; /* free segment information */ 1029 struct dirty_seglist_info *dirty_info; /* dirty segment information */ 1030 struct curseg_info *curseg_array; /* active segment information */ 1031 1032 struct f2fs_rwsem curseg_lock; /* for preventing curseg change */ 1033 1034 block_t seg0_blkaddr; /* block address of 0'th segment */ 1035 block_t main_blkaddr; /* start block address of main area */ 1036 block_t ssa_blkaddr; /* start block address of SSA area */ 1037 1038 unsigned int segment_count; /* total # of segments */ 1039 unsigned int main_segments; /* # of segments in main area */ 1040 unsigned int reserved_segments; /* # of reserved segments */ 1041 unsigned int additional_reserved_segments;/* reserved segs for IO align feature */ 1042 unsigned int ovp_segments; /* # of overprovision segments */ 1043 1044 /* a threshold to reclaim prefree segments */ 1045 unsigned int rec_prefree_segments; 1046 1047 /* for batched trimming */ 1048 unsigned int trim_sections; /* # of sections to trim */ 1049 1050 struct list_head sit_entry_set; /* sit entry set list */ 1051 1052 unsigned int ipu_policy; /* in-place-update policy */ 1053 unsigned int min_ipu_util; /* in-place-update threshold */ 1054 unsigned int min_fsync_blocks; /* threshold for fsync */ 1055 unsigned int min_seq_blocks; /* threshold for sequential blocks */ 1056 unsigned int min_hot_blocks; /* threshold for hot block allocation */ 1057 unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */ 1058 1059 /* for flush command control */ 1060 struct flush_cmd_control *fcc_info; 1061 1062 /* for discard command control */ 1063 struct discard_cmd_control *dcc_info; 1064 }; 1065 1066 /* 1067 * For superblock 1068 */ 1069 /* 1070 * COUNT_TYPE for monitoring 1071 * 1072 * f2fs monitors the number of several block types such as on-writeback, 1073 * dirty dentry blocks, dirty node blocks, and dirty meta blocks. 1074 */ 1075 #define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA) 1076 enum count_type { 1077 F2FS_DIRTY_DENTS, 1078 F2FS_DIRTY_DATA, 1079 F2FS_DIRTY_QDATA, 1080 F2FS_DIRTY_NODES, 1081 F2FS_DIRTY_META, 1082 F2FS_INMEM_PAGES, 1083 F2FS_DIRTY_IMETA, 1084 F2FS_WB_CP_DATA, 1085 F2FS_WB_DATA, 1086 F2FS_RD_DATA, 1087 F2FS_RD_NODE, 1088 F2FS_RD_META, 1089 F2FS_DIO_WRITE, 1090 F2FS_DIO_READ, 1091 NR_COUNT_TYPE, 1092 }; 1093 1094 /* 1095 * The below are the page types of bios used in submit_bio(). 1096 * The available types are: 1097 * DATA User data pages. It operates as async mode. 1098 * NODE Node pages. It operates as async mode. 1099 * META FS metadata pages such as SIT, NAT, CP. 1100 * NR_PAGE_TYPE The number of page types. 1101 * META_FLUSH Make sure the previous pages are written 1102 * with waiting the bio's completion 1103 * ... Only can be used with META. 1104 */ 1105 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) 1106 enum page_type { 1107 DATA, 1108 NODE, 1109 META, 1110 NR_PAGE_TYPE, 1111 META_FLUSH, 1112 INMEM, /* the below types are used by tracepoints only. */ 1113 INMEM_DROP, 1114 INMEM_INVALIDATE, 1115 INMEM_REVOKE, 1116 IPU, 1117 OPU, 1118 }; 1119 1120 enum temp_type { 1121 HOT = 0, /* must be zero for meta bio */ 1122 WARM, 1123 COLD, 1124 NR_TEMP_TYPE, 1125 }; 1126 1127 enum need_lock_type { 1128 LOCK_REQ = 0, 1129 LOCK_DONE, 1130 LOCK_RETRY, 1131 }; 1132 1133 enum cp_reason_type { 1134 CP_NO_NEEDED, 1135 CP_NON_REGULAR, 1136 CP_COMPRESSED, 1137 CP_HARDLINK, 1138 CP_SB_NEED_CP, 1139 CP_WRONG_PINO, 1140 CP_NO_SPC_ROLL, 1141 CP_NODE_NEED_CP, 1142 CP_FASTBOOT_MODE, 1143 CP_SPEC_LOG_NUM, 1144 CP_RECOVER_DIR, 1145 }; 1146 1147 enum iostat_type { 1148 /* WRITE IO */ 1149 APP_DIRECT_IO, /* app direct write IOs */ 1150 APP_BUFFERED_IO, /* app buffered write IOs */ 1151 APP_WRITE_IO, /* app write IOs */ 1152 APP_MAPPED_IO, /* app mapped IOs */ 1153 FS_DATA_IO, /* data IOs from kworker/fsync/reclaimer */ 1154 FS_NODE_IO, /* node IOs from kworker/fsync/reclaimer */ 1155 FS_META_IO, /* meta IOs from kworker/reclaimer */ 1156 FS_GC_DATA_IO, /* data IOs from forground gc */ 1157 FS_GC_NODE_IO, /* node IOs from forground gc */ 1158 FS_CP_DATA_IO, /* data IOs from checkpoint */ 1159 FS_CP_NODE_IO, /* node IOs from checkpoint */ 1160 FS_CP_META_IO, /* meta IOs from checkpoint */ 1161 1162 /* READ IO */ 1163 APP_DIRECT_READ_IO, /* app direct read IOs */ 1164 APP_BUFFERED_READ_IO, /* app buffered read IOs */ 1165 APP_READ_IO, /* app read IOs */ 1166 APP_MAPPED_READ_IO, /* app mapped read IOs */ 1167 FS_DATA_READ_IO, /* data read IOs */ 1168 FS_GDATA_READ_IO, /* data read IOs from background gc */ 1169 FS_CDATA_READ_IO, /* compressed data read IOs */ 1170 FS_NODE_READ_IO, /* node read IOs */ 1171 FS_META_READ_IO, /* meta read IOs */ 1172 1173 /* other */ 1174 FS_DISCARD, /* discard */ 1175 NR_IO_TYPE, 1176 }; 1177 1178 struct f2fs_io_info { 1179 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */ 1180 nid_t ino; /* inode number */ 1181 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ 1182 enum temp_type temp; /* contains HOT/WARM/COLD */ 1183 int op; /* contains REQ_OP_ */ 1184 int op_flags; /* req_flag_bits */ 1185 block_t new_blkaddr; /* new block address to be written */ 1186 block_t old_blkaddr; /* old block address before Cow */ 1187 struct page *page; /* page to be written */ 1188 struct page *encrypted_page; /* encrypted page */ 1189 struct page *compressed_page; /* compressed page */ 1190 struct list_head list; /* serialize IOs */ 1191 bool submitted; /* indicate IO submission */ 1192 int need_lock; /* indicate we need to lock cp_rwsem */ 1193 bool in_list; /* indicate fio is in io_list */ 1194 bool is_por; /* indicate IO is from recovery or not */ 1195 bool retry; /* need to reallocate block address */ 1196 int compr_blocks; /* # of compressed block addresses */ 1197 bool encrypted; /* indicate file is encrypted */ 1198 enum iostat_type io_type; /* io type */ 1199 struct writeback_control *io_wbc; /* writeback control */ 1200 struct bio **bio; /* bio for ipu */ 1201 sector_t *last_block; /* last block number in bio */ 1202 unsigned char version; /* version of the node */ 1203 }; 1204 1205 struct bio_entry { 1206 struct bio *bio; 1207 struct list_head list; 1208 }; 1209 1210 #define is_read_io(rw) ((rw) == READ) 1211 struct f2fs_bio_info { 1212 struct f2fs_sb_info *sbi; /* f2fs superblock */ 1213 struct bio *bio; /* bios to merge */ 1214 sector_t last_block_in_bio; /* last block number */ 1215 struct f2fs_io_info fio; /* store buffered io info. */ 1216 struct f2fs_rwsem io_rwsem; /* blocking op for bio */ 1217 spinlock_t io_lock; /* serialize DATA/NODE IOs */ 1218 struct list_head io_list; /* track fios */ 1219 struct list_head bio_list; /* bio entry list head */ 1220 struct f2fs_rwsem bio_list_lock; /* lock to protect bio entry list */ 1221 }; 1222 1223 #define FDEV(i) (sbi->devs[i]) 1224 #define RDEV(i) (raw_super->devs[i]) 1225 struct f2fs_dev_info { 1226 struct block_device *bdev; 1227 char path[MAX_PATH_LEN]; 1228 unsigned int total_segments; 1229 block_t start_blk; 1230 block_t end_blk; 1231 #ifdef CONFIG_BLK_DEV_ZONED 1232 unsigned int nr_blkz; /* Total number of zones */ 1233 unsigned long *blkz_seq; /* Bitmap indicating sequential zones */ 1234 block_t *zone_capacity_blocks; /* Array of zone capacity in blks */ 1235 #endif 1236 }; 1237 1238 enum inode_type { 1239 DIR_INODE, /* for dirty dir inode */ 1240 FILE_INODE, /* for dirty regular/symlink inode */ 1241 DIRTY_META, /* for all dirtied inode metadata */ 1242 ATOMIC_FILE, /* for all atomic files */ 1243 NR_INODE_TYPE, 1244 }; 1245 1246 /* for inner inode cache management */ 1247 struct inode_management { 1248 struct radix_tree_root ino_root; /* ino entry array */ 1249 spinlock_t ino_lock; /* for ino entry lock */ 1250 struct list_head ino_list; /* inode list head */ 1251 unsigned long ino_num; /* number of entries */ 1252 }; 1253 1254 /* for GC_AT */ 1255 struct atgc_management { 1256 bool atgc_enabled; /* ATGC is enabled or not */ 1257 struct rb_root_cached root; /* root of victim rb-tree */ 1258 struct list_head victim_list; /* linked with all victim entries */ 1259 unsigned int victim_count; /* victim count in rb-tree */ 1260 unsigned int candidate_ratio; /* candidate ratio */ 1261 unsigned int max_candidate_count; /* max candidate count */ 1262 unsigned int age_weight; /* age weight, vblock_weight = 100 - age_weight */ 1263 unsigned long long age_threshold; /* age threshold */ 1264 }; 1265 1266 /* For s_flag in struct f2fs_sb_info */ 1267 enum { 1268 SBI_IS_DIRTY, /* dirty flag for checkpoint */ 1269 SBI_IS_CLOSE, /* specify unmounting */ 1270 SBI_NEED_FSCK, /* need fsck.f2fs to fix */ 1271 SBI_POR_DOING, /* recovery is doing or not */ 1272 SBI_NEED_SB_WRITE, /* need to recover superblock */ 1273 SBI_NEED_CP, /* need to checkpoint */ 1274 SBI_IS_SHUTDOWN, /* shutdown by ioctl */ 1275 SBI_IS_RECOVERED, /* recovered orphan/data */ 1276 SBI_CP_DISABLED, /* CP was disabled last mount */ 1277 SBI_CP_DISABLED_QUICK, /* CP was disabled quickly */ 1278 SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */ 1279 SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */ 1280 SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */ 1281 SBI_IS_RESIZEFS, /* resizefs is in process */ 1282 }; 1283 1284 enum { 1285 CP_TIME, 1286 REQ_TIME, 1287 DISCARD_TIME, 1288 GC_TIME, 1289 DISABLE_TIME, 1290 UMOUNT_DISCARD_TIMEOUT, 1291 MAX_TIME, 1292 }; 1293 1294 enum { 1295 GC_NORMAL, 1296 GC_IDLE_CB, 1297 GC_IDLE_GREEDY, 1298 GC_IDLE_AT, 1299 GC_URGENT_HIGH, 1300 GC_URGENT_LOW, 1301 MAX_GC_MODE, 1302 }; 1303 1304 enum { 1305 BGGC_MODE_ON, /* background gc is on */ 1306 BGGC_MODE_OFF, /* background gc is off */ 1307 BGGC_MODE_SYNC, /* 1308 * background gc is on, migrating blocks 1309 * like foreground gc 1310 */ 1311 }; 1312 1313 enum { 1314 FS_MODE_ADAPTIVE, /* use both lfs/ssr allocation */ 1315 FS_MODE_LFS, /* use lfs allocation only */ 1316 FS_MODE_FRAGMENT_SEG, /* segment fragmentation mode */ 1317 FS_MODE_FRAGMENT_BLK, /* block fragmentation mode */ 1318 }; 1319 1320 enum { 1321 WHINT_MODE_OFF, /* not pass down write hints */ 1322 WHINT_MODE_USER, /* try to pass down hints given by users */ 1323 WHINT_MODE_FS, /* pass down hints with F2FS policy */ 1324 }; 1325 1326 enum { 1327 ALLOC_MODE_DEFAULT, /* stay default */ 1328 ALLOC_MODE_REUSE, /* reuse segments as much as possible */ 1329 }; 1330 1331 enum fsync_mode { 1332 FSYNC_MODE_POSIX, /* fsync follows posix semantics */ 1333 FSYNC_MODE_STRICT, /* fsync behaves in line with ext4 */ 1334 FSYNC_MODE_NOBARRIER, /* fsync behaves nobarrier based on posix */ 1335 }; 1336 1337 enum { 1338 COMPR_MODE_FS, /* 1339 * automatically compress compression 1340 * enabled files 1341 */ 1342 COMPR_MODE_USER, /* 1343 * automatical compression is disabled. 1344 * user can control the file compression 1345 * using ioctls 1346 */ 1347 }; 1348 1349 enum { 1350 DISCARD_UNIT_BLOCK, /* basic discard unit is block */ 1351 DISCARD_UNIT_SEGMENT, /* basic discard unit is segment */ 1352 DISCARD_UNIT_SECTION, /* basic discard unit is section */ 1353 }; 1354 1355 static inline int f2fs_test_bit(unsigned int nr, char *addr); 1356 static inline void f2fs_set_bit(unsigned int nr, char *addr); 1357 static inline void f2fs_clear_bit(unsigned int nr, char *addr); 1358 1359 /* 1360 * Layout of f2fs page.private: 1361 * 1362 * Layout A: lowest bit should be 1 1363 * | bit0 = 1 | bit1 | bit2 | ... | bit MAX | private data .... | 1364 * bit 0 PAGE_PRIVATE_NOT_POINTER 1365 * bit 1 PAGE_PRIVATE_ATOMIC_WRITE 1366 * bit 2 PAGE_PRIVATE_DUMMY_WRITE 1367 * bit 3 PAGE_PRIVATE_ONGOING_MIGRATION 1368 * bit 4 PAGE_PRIVATE_INLINE_INODE 1369 * bit 5 PAGE_PRIVATE_REF_RESOURCE 1370 * bit 6- f2fs private data 1371 * 1372 * Layout B: lowest bit should be 0 1373 * page.private is a wrapped pointer. 1374 */ 1375 enum { 1376 PAGE_PRIVATE_NOT_POINTER, /* private contains non-pointer data */ 1377 PAGE_PRIVATE_ATOMIC_WRITE, /* data page from atomic write path */ 1378 PAGE_PRIVATE_DUMMY_WRITE, /* data page for padding aligned IO */ 1379 PAGE_PRIVATE_ONGOING_MIGRATION, /* data page which is on-going migrating */ 1380 PAGE_PRIVATE_INLINE_INODE, /* inode page contains inline data */ 1381 PAGE_PRIVATE_REF_RESOURCE, /* dirty page has referenced resources */ 1382 PAGE_PRIVATE_MAX 1383 }; 1384 1385 #define PAGE_PRIVATE_GET_FUNC(name, flagname) \ 1386 static inline bool page_private_##name(struct page *page) \ 1387 { \ 1388 return PagePrivate(page) && \ 1389 test_bit(PAGE_PRIVATE_NOT_POINTER, &page_private(page)) && \ 1390 test_bit(PAGE_PRIVATE_##flagname, &page_private(page)); \ 1391 } 1392 1393 #define PAGE_PRIVATE_SET_FUNC(name, flagname) \ 1394 static inline void set_page_private_##name(struct page *page) \ 1395 { \ 1396 if (!PagePrivate(page)) { \ 1397 get_page(page); \ 1398 SetPagePrivate(page); \ 1399 set_page_private(page, 0); \ 1400 } \ 1401 set_bit(PAGE_PRIVATE_NOT_POINTER, &page_private(page)); \ 1402 set_bit(PAGE_PRIVATE_##flagname, &page_private(page)); \ 1403 } 1404 1405 #define PAGE_PRIVATE_CLEAR_FUNC(name, flagname) \ 1406 static inline void clear_page_private_##name(struct page *page) \ 1407 { \ 1408 clear_bit(PAGE_PRIVATE_##flagname, &page_private(page)); \ 1409 if (page_private(page) == 1 << PAGE_PRIVATE_NOT_POINTER) { \ 1410 set_page_private(page, 0); \ 1411 if (PagePrivate(page)) { \ 1412 ClearPagePrivate(page); \ 1413 put_page(page); \ 1414 }\ 1415 } \ 1416 } 1417 1418 PAGE_PRIVATE_GET_FUNC(nonpointer, NOT_POINTER); 1419 PAGE_PRIVATE_GET_FUNC(reference, REF_RESOURCE); 1420 PAGE_PRIVATE_GET_FUNC(inline, INLINE_INODE); 1421 PAGE_PRIVATE_GET_FUNC(gcing, ONGOING_MIGRATION); 1422 PAGE_PRIVATE_GET_FUNC(atomic, ATOMIC_WRITE); 1423 PAGE_PRIVATE_GET_FUNC(dummy, DUMMY_WRITE); 1424 1425 PAGE_PRIVATE_SET_FUNC(reference, REF_RESOURCE); 1426 PAGE_PRIVATE_SET_FUNC(inline, INLINE_INODE); 1427 PAGE_PRIVATE_SET_FUNC(gcing, ONGOING_MIGRATION); 1428 PAGE_PRIVATE_SET_FUNC(atomic, ATOMIC_WRITE); 1429 PAGE_PRIVATE_SET_FUNC(dummy, DUMMY_WRITE); 1430 1431 PAGE_PRIVATE_CLEAR_FUNC(reference, REF_RESOURCE); 1432 PAGE_PRIVATE_CLEAR_FUNC(inline, INLINE_INODE); 1433 PAGE_PRIVATE_CLEAR_FUNC(gcing, ONGOING_MIGRATION); 1434 PAGE_PRIVATE_CLEAR_FUNC(atomic, ATOMIC_WRITE); 1435 PAGE_PRIVATE_CLEAR_FUNC(dummy, DUMMY_WRITE); 1436 1437 static inline unsigned long get_page_private_data(struct page *page) 1438 { 1439 unsigned long data = page_private(page); 1440 1441 if (!test_bit(PAGE_PRIVATE_NOT_POINTER, &data)) 1442 return 0; 1443 return data >> PAGE_PRIVATE_MAX; 1444 } 1445 1446 static inline void set_page_private_data(struct page *page, unsigned long data) 1447 { 1448 if (!PagePrivate(page)) { 1449 get_page(page); 1450 SetPagePrivate(page); 1451 set_page_private(page, 0); 1452 } 1453 set_bit(PAGE_PRIVATE_NOT_POINTER, &page_private(page)); 1454 page_private(page) |= data << PAGE_PRIVATE_MAX; 1455 } 1456 1457 static inline void clear_page_private_data(struct page *page) 1458 { 1459 page_private(page) &= (1 << PAGE_PRIVATE_MAX) - 1; 1460 if (page_private(page) == 1 << PAGE_PRIVATE_NOT_POINTER) { 1461 set_page_private(page, 0); 1462 if (PagePrivate(page)) { 1463 ClearPagePrivate(page); 1464 put_page(page); 1465 } 1466 } 1467 } 1468 1469 /* For compression */ 1470 enum compress_algorithm_type { 1471 COMPRESS_LZO, 1472 COMPRESS_LZ4, 1473 COMPRESS_ZSTD, 1474 COMPRESS_LZORLE, 1475 COMPRESS_MAX, 1476 }; 1477 1478 enum compress_flag { 1479 COMPRESS_CHKSUM, 1480 COMPRESS_MAX_FLAG, 1481 }; 1482 1483 #define COMPRESS_WATERMARK 20 1484 #define COMPRESS_PERCENT 20 1485 1486 #define COMPRESS_DATA_RESERVED_SIZE 4 1487 struct compress_data { 1488 __le32 clen; /* compressed data size */ 1489 __le32 chksum; /* compressed data chksum */ 1490 __le32 reserved[COMPRESS_DATA_RESERVED_SIZE]; /* reserved */ 1491 u8 cdata[]; /* compressed data */ 1492 }; 1493 1494 #define COMPRESS_HEADER_SIZE (sizeof(struct compress_data)) 1495 1496 #define F2FS_COMPRESSED_PAGE_MAGIC 0xF5F2C000 1497 1498 #define COMPRESS_LEVEL_OFFSET 8 1499 1500 /* compress context */ 1501 struct compress_ctx { 1502 struct inode *inode; /* inode the context belong to */ 1503 pgoff_t cluster_idx; /* cluster index number */ 1504 unsigned int cluster_size; /* page count in cluster */ 1505 unsigned int log_cluster_size; /* log of cluster size */ 1506 struct page **rpages; /* pages store raw data in cluster */ 1507 unsigned int nr_rpages; /* total page number in rpages */ 1508 struct page **cpages; /* pages store compressed data in cluster */ 1509 unsigned int nr_cpages; /* total page number in cpages */ 1510 unsigned int valid_nr_cpages; /* valid page number in cpages */ 1511 void *rbuf; /* virtual mapped address on rpages */ 1512 struct compress_data *cbuf; /* virtual mapped address on cpages */ 1513 size_t rlen; /* valid data length in rbuf */ 1514 size_t clen; /* valid data length in cbuf */ 1515 void *private; /* payload buffer for specified compression algorithm */ 1516 void *private2; /* extra payload buffer */ 1517 }; 1518 1519 /* compress context for write IO path */ 1520 struct compress_io_ctx { 1521 u32 magic; /* magic number to indicate page is compressed */ 1522 struct inode *inode; /* inode the context belong to */ 1523 struct page **rpages; /* pages store raw data in cluster */ 1524 unsigned int nr_rpages; /* total page number in rpages */ 1525 atomic_t pending_pages; /* in-flight compressed page count */ 1526 }; 1527 1528 /* Context for decompressing one cluster on the read IO path */ 1529 struct decompress_io_ctx { 1530 u32 magic; /* magic number to indicate page is compressed */ 1531 struct inode *inode; /* inode the context belong to */ 1532 pgoff_t cluster_idx; /* cluster index number */ 1533 unsigned int cluster_size; /* page count in cluster */ 1534 unsigned int log_cluster_size; /* log of cluster size */ 1535 struct page **rpages; /* pages store raw data in cluster */ 1536 unsigned int nr_rpages; /* total page number in rpages */ 1537 struct page **cpages; /* pages store compressed data in cluster */ 1538 unsigned int nr_cpages; /* total page number in cpages */ 1539 struct page **tpages; /* temp pages to pad holes in cluster */ 1540 void *rbuf; /* virtual mapped address on rpages */ 1541 struct compress_data *cbuf; /* virtual mapped address on cpages */ 1542 size_t rlen; /* valid data length in rbuf */ 1543 size_t clen; /* valid data length in cbuf */ 1544 1545 /* 1546 * The number of compressed pages remaining to be read in this cluster. 1547 * This is initially nr_cpages. It is decremented by 1 each time a page 1548 * has been read (or failed to be read). When it reaches 0, the cluster 1549 * is decompressed (or an error is reported). 1550 * 1551 * If an error occurs before all the pages have been submitted for I/O, 1552 * then this will never reach 0. In this case the I/O submitter is 1553 * responsible for calling f2fs_decompress_end_io() instead. 1554 */ 1555 atomic_t remaining_pages; 1556 1557 /* 1558 * Number of references to this decompress_io_ctx. 1559 * 1560 * One reference is held for I/O completion. This reference is dropped 1561 * after the pagecache pages are updated and unlocked -- either after 1562 * decompression (and verity if enabled), or after an error. 1563 * 1564 * In addition, each compressed page holds a reference while it is in a 1565 * bio. These references are necessary prevent compressed pages from 1566 * being freed while they are still in a bio. 1567 */ 1568 refcount_t refcnt; 1569 1570 bool failed; /* IO error occurred before decompression? */ 1571 bool need_verity; /* need fs-verity verification after decompression? */ 1572 void *private; /* payload buffer for specified decompression algorithm */ 1573 void *private2; /* extra payload buffer */ 1574 struct work_struct verity_work; /* work to verify the decompressed pages */ 1575 }; 1576 1577 #define NULL_CLUSTER ((unsigned int)(~0)) 1578 #define MIN_COMPRESS_LOG_SIZE 2 1579 #define MAX_COMPRESS_LOG_SIZE 8 1580 #define MAX_COMPRESS_WINDOW_SIZE(log_size) ((PAGE_SIZE) << (log_size)) 1581 1582 struct f2fs_sb_info { 1583 struct super_block *sb; /* pointer to VFS super block */ 1584 struct proc_dir_entry *s_proc; /* proc entry */ 1585 struct f2fs_super_block *raw_super; /* raw super block pointer */ 1586 struct f2fs_rwsem sb_lock; /* lock for raw super block */ 1587 int valid_super_block; /* valid super block no */ 1588 unsigned long s_flag; /* flags for sbi */ 1589 struct mutex writepages; /* mutex for writepages() */ 1590 1591 #ifdef CONFIG_BLK_DEV_ZONED 1592 unsigned int blocks_per_blkz; /* F2FS blocks per zone */ 1593 unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */ 1594 #endif 1595 1596 /* for node-related operations */ 1597 struct f2fs_nm_info *nm_info; /* node manager */ 1598 struct inode *node_inode; /* cache node blocks */ 1599 1600 /* for segment-related operations */ 1601 struct f2fs_sm_info *sm_info; /* segment manager */ 1602 1603 /* for bio operations */ 1604 struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */ 1605 /* keep migration IO order for LFS mode */ 1606 struct f2fs_rwsem io_order_lock; 1607 mempool_t *write_io_dummy; /* Dummy pages */ 1608 1609 /* for checkpoint */ 1610 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ 1611 int cur_cp_pack; /* remain current cp pack */ 1612 spinlock_t cp_lock; /* for flag in ckpt */ 1613 struct inode *meta_inode; /* cache meta blocks */ 1614 struct f2fs_rwsem cp_global_sem; /* checkpoint procedure lock */ 1615 struct f2fs_rwsem cp_rwsem; /* blocking FS operations */ 1616 struct f2fs_rwsem node_write; /* locking node writes */ 1617 struct f2fs_rwsem node_change; /* locking node change */ 1618 wait_queue_head_t cp_wait; 1619 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */ 1620 long interval_time[MAX_TIME]; /* to store thresholds */ 1621 struct ckpt_req_control cprc_info; /* for checkpoint request control */ 1622 1623 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */ 1624 1625 spinlock_t fsync_node_lock; /* for node entry lock */ 1626 struct list_head fsync_node_list; /* node list head */ 1627 unsigned int fsync_seg_id; /* sequence id */ 1628 unsigned int fsync_node_num; /* number of node entries */ 1629 1630 /* for orphan inode, use 0'th array */ 1631 unsigned int max_orphans; /* max orphan inodes */ 1632 1633 /* for inode management */ 1634 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */ 1635 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */ 1636 struct mutex flush_lock; /* for flush exclusion */ 1637 1638 /* for extent tree cache */ 1639 struct radix_tree_root extent_tree_root;/* cache extent cache entries */ 1640 struct mutex extent_tree_lock; /* locking extent radix tree */ 1641 struct list_head extent_list; /* lru list for shrinker */ 1642 spinlock_t extent_lock; /* locking extent lru list */ 1643 atomic_t total_ext_tree; /* extent tree count */ 1644 struct list_head zombie_list; /* extent zombie tree list */ 1645 atomic_t total_zombie_tree; /* extent zombie tree count */ 1646 atomic_t total_ext_node; /* extent info count */ 1647 1648 /* basic filesystem units */ 1649 unsigned int log_sectors_per_block; /* log2 sectors per block */ 1650 unsigned int log_blocksize; /* log2 block size */ 1651 unsigned int blocksize; /* block size */ 1652 unsigned int root_ino_num; /* root inode number*/ 1653 unsigned int node_ino_num; /* node inode number*/ 1654 unsigned int meta_ino_num; /* meta inode number*/ 1655 unsigned int log_blocks_per_seg; /* log2 blocks per segment */ 1656 unsigned int blocks_per_seg; /* blocks per segment */ 1657 unsigned int segs_per_sec; /* segments per section */ 1658 unsigned int secs_per_zone; /* sections per zone */ 1659 unsigned int total_sections; /* total section count */ 1660 unsigned int total_node_count; /* total node block count */ 1661 unsigned int total_valid_node_count; /* valid node block count */ 1662 int dir_level; /* directory level */ 1663 int readdir_ra; /* readahead inode in readdir */ 1664 u64 max_io_bytes; /* max io bytes to merge IOs */ 1665 1666 block_t user_block_count; /* # of user blocks */ 1667 block_t total_valid_block_count; /* # of valid blocks */ 1668 block_t discard_blks; /* discard command candidats */ 1669 block_t last_valid_block_count; /* for recovery */ 1670 block_t reserved_blocks; /* configurable reserved blocks */ 1671 block_t current_reserved_blocks; /* current reserved blocks */ 1672 1673 /* Additional tracking for no checkpoint mode */ 1674 block_t unusable_block_count; /* # of blocks saved by last cp */ 1675 1676 unsigned int nquota_files; /* # of quota sysfile */ 1677 struct f2fs_rwsem quota_sem; /* blocking cp for flags */ 1678 1679 /* # of pages, see count_type */ 1680 atomic_t nr_pages[NR_COUNT_TYPE]; 1681 /* # of allocated blocks */ 1682 struct percpu_counter alloc_valid_block_count; 1683 1684 /* writeback control */ 1685 atomic_t wb_sync_req[META]; /* count # of WB_SYNC threads */ 1686 1687 /* valid inode count */ 1688 struct percpu_counter total_valid_inode_count; 1689 1690 struct f2fs_mount_info mount_opt; /* mount options */ 1691 1692 /* for cleaning operations */ 1693 struct f2fs_rwsem gc_lock; /* 1694 * semaphore for GC, avoid 1695 * race between GC and GC or CP 1696 */ 1697 struct f2fs_gc_kthread *gc_thread; /* GC thread */ 1698 struct atgc_management am; /* atgc management */ 1699 unsigned int cur_victim_sec; /* current victim section num */ 1700 unsigned int gc_mode; /* current GC state */ 1701 unsigned int next_victim_seg[2]; /* next segment in victim section */ 1702 spinlock_t gc_urgent_high_lock; 1703 bool gc_urgent_high_limited; /* indicates having limited trial count */ 1704 unsigned int gc_urgent_high_remaining; /* remaining trial count for GC_URGENT_HIGH */ 1705 1706 /* for skip statistic */ 1707 unsigned int atomic_files; /* # of opened atomic file */ 1708 unsigned long long skipped_atomic_files[2]; /* FG_GC and BG_GC */ 1709 unsigned long long skipped_gc_rwsem; /* FG_GC only */ 1710 1711 /* threshold for gc trials on pinned files */ 1712 u64 gc_pin_file_threshold; 1713 struct f2fs_rwsem pin_sem; 1714 1715 /* maximum # of trials to find a victim segment for SSR and GC */ 1716 unsigned int max_victim_search; 1717 /* migration granularity of garbage collection, unit: segment */ 1718 unsigned int migration_granularity; 1719 1720 /* 1721 * for stat information. 1722 * one is for the LFS mode, and the other is for the SSR mode. 1723 */ 1724 #ifdef CONFIG_F2FS_STAT_FS 1725 struct f2fs_stat_info *stat_info; /* FS status information */ 1726 atomic_t meta_count[META_MAX]; /* # of meta blocks */ 1727 unsigned int segment_count[2]; /* # of allocated segments */ 1728 unsigned int block_count[2]; /* # of allocated blocks */ 1729 atomic_t inplace_count; /* # of inplace update */ 1730 atomic64_t total_hit_ext; /* # of lookup extent cache */ 1731 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */ 1732 atomic64_t read_hit_largest; /* # of hit largest extent node */ 1733 atomic64_t read_hit_cached; /* # of hit cached extent node */ 1734 atomic_t inline_xattr; /* # of inline_xattr inodes */ 1735 atomic_t inline_inode; /* # of inline_data inodes */ 1736 atomic_t inline_dir; /* # of inline_dentry inodes */ 1737 atomic_t compr_inode; /* # of compressed inodes */ 1738 atomic64_t compr_blocks; /* # of compressed blocks */ 1739 atomic_t vw_cnt; /* # of volatile writes */ 1740 atomic_t max_aw_cnt; /* max # of atomic writes */ 1741 atomic_t max_vw_cnt; /* max # of volatile writes */ 1742 unsigned int io_skip_bggc; /* skip background gc for in-flight IO */ 1743 unsigned int other_skip_bggc; /* skip background gc for other reasons */ 1744 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */ 1745 #endif 1746 spinlock_t stat_lock; /* lock for stat operations */ 1747 1748 /* to attach REQ_META|REQ_FUA flags */ 1749 unsigned int data_io_flag; 1750 unsigned int node_io_flag; 1751 1752 /* For sysfs suppport */ 1753 struct kobject s_kobj; /* /sys/fs/f2fs/<devname> */ 1754 struct completion s_kobj_unregister; 1755 1756 struct kobject s_stat_kobj; /* /sys/fs/f2fs/<devname>/stat */ 1757 struct completion s_stat_kobj_unregister; 1758 1759 struct kobject s_feature_list_kobj; /* /sys/fs/f2fs/<devname>/feature_list */ 1760 struct completion s_feature_list_kobj_unregister; 1761 1762 /* For shrinker support */ 1763 struct list_head s_list; 1764 struct mutex umount_mutex; 1765 unsigned int shrinker_run_no; 1766 1767 /* For multi devices */ 1768 int s_ndevs; /* number of devices */ 1769 struct f2fs_dev_info *devs; /* for device list */ 1770 unsigned int dirty_device; /* for checkpoint data flush */ 1771 spinlock_t dev_lock; /* protect dirty_device */ 1772 bool aligned_blksize; /* all devices has the same logical blksize */ 1773 1774 /* For write statistics */ 1775 u64 sectors_written_start; 1776 u64 kbytes_written; 1777 1778 /* Reference to checksum algorithm driver via cryptoapi */ 1779 struct crypto_shash *s_chksum_driver; 1780 1781 /* Precomputed FS UUID checksum for seeding other checksums */ 1782 __u32 s_chksum_seed; 1783 1784 struct workqueue_struct *post_read_wq; /* post read workqueue */ 1785 1786 struct kmem_cache *inline_xattr_slab; /* inline xattr entry */ 1787 unsigned int inline_xattr_slab_size; /* default inline xattr slab size */ 1788 1789 /* For reclaimed segs statistics per each GC mode */ 1790 unsigned int gc_segment_mode; /* GC state for reclaimed segments */ 1791 unsigned int gc_reclaimed_segs[MAX_GC_MODE]; /* Reclaimed segs for each mode */ 1792 1793 unsigned long seq_file_ra_mul; /* multiplier for ra_pages of seq. files in fadvise */ 1794 1795 int max_fragment_chunk; /* max chunk size for block fragmentation mode */ 1796 int max_fragment_hole; /* max hole size for block fragmentation mode */ 1797 1798 #ifdef CONFIG_F2FS_FS_COMPRESSION 1799 struct kmem_cache *page_array_slab; /* page array entry */ 1800 unsigned int page_array_slab_size; /* default page array slab size */ 1801 1802 /* For runtime compression statistics */ 1803 u64 compr_written_block; 1804 u64 compr_saved_block; 1805 u32 compr_new_inode; 1806 1807 /* For compressed block cache */ 1808 struct inode *compress_inode; /* cache compressed blocks */ 1809 unsigned int compress_percent; /* cache page percentage */ 1810 unsigned int compress_watermark; /* cache page watermark */ 1811 atomic_t compress_page_hit; /* cache hit count */ 1812 #endif 1813 1814 #ifdef CONFIG_F2FS_IOSTAT 1815 /* For app/fs IO statistics */ 1816 spinlock_t iostat_lock; 1817 unsigned long long rw_iostat[NR_IO_TYPE]; 1818 unsigned long long prev_rw_iostat[NR_IO_TYPE]; 1819 bool iostat_enable; 1820 unsigned long iostat_next_period; 1821 unsigned int iostat_period_ms; 1822 1823 /* For io latency related statistics info in one iostat period */ 1824 spinlock_t iostat_lat_lock; 1825 struct iostat_lat_info *iostat_io_lat; 1826 #endif 1827 }; 1828 1829 #ifdef CONFIG_F2FS_FAULT_INJECTION 1830 #define f2fs_show_injection_info(sbi, type) \ 1831 printk_ratelimited("%sF2FS-fs (%s) : inject %s in %s of %pS\n", \ 1832 KERN_INFO, sbi->sb->s_id, \ 1833 f2fs_fault_name[type], \ 1834 __func__, __builtin_return_address(0)) 1835 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type) 1836 { 1837 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; 1838 1839 if (!ffi->inject_rate) 1840 return false; 1841 1842 if (!IS_FAULT_SET(ffi, type)) 1843 return false; 1844 1845 atomic_inc(&ffi->inject_ops); 1846 if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) { 1847 atomic_set(&ffi->inject_ops, 0); 1848 return true; 1849 } 1850 return false; 1851 } 1852 #else 1853 #define f2fs_show_injection_info(sbi, type) do { } while (0) 1854 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type) 1855 { 1856 return false; 1857 } 1858 #endif 1859 1860 /* 1861 * Test if the mounted volume is a multi-device volume. 1862 * - For a single regular disk volume, sbi->s_ndevs is 0. 1863 * - For a single zoned disk volume, sbi->s_ndevs is 1. 1864 * - For a multi-device volume, sbi->s_ndevs is always 2 or more. 1865 */ 1866 static inline bool f2fs_is_multi_device(struct f2fs_sb_info *sbi) 1867 { 1868 return sbi->s_ndevs > 1; 1869 } 1870 1871 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type) 1872 { 1873 unsigned long now = jiffies; 1874 1875 sbi->last_time[type] = now; 1876 1877 /* DISCARD_TIME and GC_TIME are based on REQ_TIME */ 1878 if (type == REQ_TIME) { 1879 sbi->last_time[DISCARD_TIME] = now; 1880 sbi->last_time[GC_TIME] = now; 1881 } 1882 } 1883 1884 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type) 1885 { 1886 unsigned long interval = sbi->interval_time[type] * HZ; 1887 1888 return time_after(jiffies, sbi->last_time[type] + interval); 1889 } 1890 1891 static inline unsigned int f2fs_time_to_wait(struct f2fs_sb_info *sbi, 1892 int type) 1893 { 1894 unsigned long interval = sbi->interval_time[type] * HZ; 1895 unsigned int wait_ms = 0; 1896 long delta; 1897 1898 delta = (sbi->last_time[type] + interval) - jiffies; 1899 if (delta > 0) 1900 wait_ms = jiffies_to_msecs(delta); 1901 1902 return wait_ms; 1903 } 1904 1905 /* 1906 * Inline functions 1907 */ 1908 static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc, 1909 const void *address, unsigned int length) 1910 { 1911 struct { 1912 struct shash_desc shash; 1913 char ctx[4]; 1914 } desc; 1915 int err; 1916 1917 BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx)); 1918 1919 desc.shash.tfm = sbi->s_chksum_driver; 1920 *(u32 *)desc.ctx = crc; 1921 1922 err = crypto_shash_update(&desc.shash, address, length); 1923 BUG_ON(err); 1924 1925 return *(u32 *)desc.ctx; 1926 } 1927 1928 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address, 1929 unsigned int length) 1930 { 1931 return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length); 1932 } 1933 1934 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc, 1935 void *buf, size_t buf_size) 1936 { 1937 return f2fs_crc32(sbi, buf, buf_size) == blk_crc; 1938 } 1939 1940 static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc, 1941 const void *address, unsigned int length) 1942 { 1943 return __f2fs_crc32(sbi, crc, address, length); 1944 } 1945 1946 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) 1947 { 1948 return container_of(inode, struct f2fs_inode_info, vfs_inode); 1949 } 1950 1951 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) 1952 { 1953 return sb->s_fs_info; 1954 } 1955 1956 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) 1957 { 1958 return F2FS_SB(inode->i_sb); 1959 } 1960 1961 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) 1962 { 1963 return F2FS_I_SB(mapping->host); 1964 } 1965 1966 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) 1967 { 1968 return F2FS_M_SB(page_file_mapping(page)); 1969 } 1970 1971 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) 1972 { 1973 return (struct f2fs_super_block *)(sbi->raw_super); 1974 } 1975 1976 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) 1977 { 1978 return (struct f2fs_checkpoint *)(sbi->ckpt); 1979 } 1980 1981 static inline struct f2fs_node *F2FS_NODE(struct page *page) 1982 { 1983 return (struct f2fs_node *)page_address(page); 1984 } 1985 1986 static inline struct f2fs_inode *F2FS_INODE(struct page *page) 1987 { 1988 return &((struct f2fs_node *)page_address(page))->i; 1989 } 1990 1991 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) 1992 { 1993 return (struct f2fs_nm_info *)(sbi->nm_info); 1994 } 1995 1996 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) 1997 { 1998 return (struct f2fs_sm_info *)(sbi->sm_info); 1999 } 2000 2001 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) 2002 { 2003 return (struct sit_info *)(SM_I(sbi)->sit_info); 2004 } 2005 2006 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) 2007 { 2008 return (struct free_segmap_info *)(SM_I(sbi)->free_info); 2009 } 2010 2011 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) 2012 { 2013 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); 2014 } 2015 2016 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) 2017 { 2018 return sbi->meta_inode->i_mapping; 2019 } 2020 2021 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) 2022 { 2023 return sbi->node_inode->i_mapping; 2024 } 2025 2026 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type) 2027 { 2028 return test_bit(type, &sbi->s_flag); 2029 } 2030 2031 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) 2032 { 2033 set_bit(type, &sbi->s_flag); 2034 } 2035 2036 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) 2037 { 2038 clear_bit(type, &sbi->s_flag); 2039 } 2040 2041 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) 2042 { 2043 return le64_to_cpu(cp->checkpoint_ver); 2044 } 2045 2046 static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type) 2047 { 2048 if (type < F2FS_MAX_QUOTAS) 2049 return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]); 2050 return 0; 2051 } 2052 2053 static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp) 2054 { 2055 size_t crc_offset = le32_to_cpu(cp->checksum_offset); 2056 return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset))); 2057 } 2058 2059 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 2060 { 2061 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 2062 2063 return ckpt_flags & f; 2064 } 2065 2066 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) 2067 { 2068 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f); 2069 } 2070 2071 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 2072 { 2073 unsigned int ckpt_flags; 2074 2075 ckpt_flags = le32_to_cpu(cp->ckpt_flags); 2076 ckpt_flags |= f; 2077 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 2078 } 2079 2080 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) 2081 { 2082 unsigned long flags; 2083 2084 spin_lock_irqsave(&sbi->cp_lock, flags); 2085 __set_ckpt_flags(F2FS_CKPT(sbi), f); 2086 spin_unlock_irqrestore(&sbi->cp_lock, flags); 2087 } 2088 2089 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 2090 { 2091 unsigned int ckpt_flags; 2092 2093 ckpt_flags = le32_to_cpu(cp->ckpt_flags); 2094 ckpt_flags &= (~f); 2095 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 2096 } 2097 2098 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) 2099 { 2100 unsigned long flags; 2101 2102 spin_lock_irqsave(&sbi->cp_lock, flags); 2103 __clear_ckpt_flags(F2FS_CKPT(sbi), f); 2104 spin_unlock_irqrestore(&sbi->cp_lock, flags); 2105 } 2106 2107 static inline void init_f2fs_rwsem(struct f2fs_rwsem *sem) 2108 { 2109 init_rwsem(&sem->internal_rwsem); 2110 init_waitqueue_head(&sem->read_waiters); 2111 } 2112 2113 static inline int f2fs_rwsem_is_locked(struct f2fs_rwsem *sem) 2114 { 2115 return rwsem_is_locked(&sem->internal_rwsem); 2116 } 2117 2118 static inline int f2fs_rwsem_is_contended(struct f2fs_rwsem *sem) 2119 { 2120 return rwsem_is_contended(&sem->internal_rwsem); 2121 } 2122 2123 static inline void f2fs_down_read(struct f2fs_rwsem *sem) 2124 { 2125 wait_event(sem->read_waiters, down_read_trylock(&sem->internal_rwsem)); 2126 } 2127 2128 static inline int f2fs_down_read_trylock(struct f2fs_rwsem *sem) 2129 { 2130 return down_read_trylock(&sem->internal_rwsem); 2131 } 2132 2133 #ifdef CONFIG_DEBUG_LOCK_ALLOC 2134 static inline void f2fs_down_read_nested(struct f2fs_rwsem *sem, int subclass) 2135 { 2136 down_read_nested(&sem->internal_rwsem, subclass); 2137 } 2138 #else 2139 #define f2fs_down_read_nested(sem, subclass) f2fs_down_read(sem) 2140 #endif 2141 2142 static inline void f2fs_up_read(struct f2fs_rwsem *sem) 2143 { 2144 up_read(&sem->internal_rwsem); 2145 } 2146 2147 static inline void f2fs_down_write(struct f2fs_rwsem *sem) 2148 { 2149 down_write(&sem->internal_rwsem); 2150 } 2151 2152 static inline int f2fs_down_write_trylock(struct f2fs_rwsem *sem) 2153 { 2154 return down_write_trylock(&sem->internal_rwsem); 2155 } 2156 2157 static inline void f2fs_up_write(struct f2fs_rwsem *sem) 2158 { 2159 up_write(&sem->internal_rwsem); 2160 wake_up_all(&sem->read_waiters); 2161 } 2162 2163 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) 2164 { 2165 f2fs_down_read(&sbi->cp_rwsem); 2166 } 2167 2168 static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi) 2169 { 2170 if (time_to_inject(sbi, FAULT_LOCK_OP)) { 2171 f2fs_show_injection_info(sbi, FAULT_LOCK_OP); 2172 return 0; 2173 } 2174 return f2fs_down_read_trylock(&sbi->cp_rwsem); 2175 } 2176 2177 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) 2178 { 2179 f2fs_up_read(&sbi->cp_rwsem); 2180 } 2181 2182 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) 2183 { 2184 f2fs_down_write(&sbi->cp_rwsem); 2185 } 2186 2187 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) 2188 { 2189 f2fs_up_write(&sbi->cp_rwsem); 2190 } 2191 2192 static inline int __get_cp_reason(struct f2fs_sb_info *sbi) 2193 { 2194 int reason = CP_SYNC; 2195 2196 if (test_opt(sbi, FASTBOOT)) 2197 reason = CP_FASTBOOT; 2198 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) 2199 reason = CP_UMOUNT; 2200 return reason; 2201 } 2202 2203 static inline bool __remain_node_summaries(int reason) 2204 { 2205 return (reason & (CP_UMOUNT | CP_FASTBOOT)); 2206 } 2207 2208 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi) 2209 { 2210 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) || 2211 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG)); 2212 } 2213 2214 /* 2215 * Check whether the inode has blocks or not 2216 */ 2217 static inline int F2FS_HAS_BLOCKS(struct inode *inode) 2218 { 2219 block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0; 2220 2221 return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block; 2222 } 2223 2224 static inline bool f2fs_has_xattr_block(unsigned int ofs) 2225 { 2226 return ofs == XATTR_NODE_OFFSET; 2227 } 2228 2229 static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi, 2230 struct inode *inode, bool cap) 2231 { 2232 if (!inode) 2233 return true; 2234 if (!test_opt(sbi, RESERVE_ROOT)) 2235 return false; 2236 if (IS_NOQUOTA(inode)) 2237 return true; 2238 if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid())) 2239 return true; 2240 if (!gid_eq(F2FS_OPTION(sbi).s_resgid, GLOBAL_ROOT_GID) && 2241 in_group_p(F2FS_OPTION(sbi).s_resgid)) 2242 return true; 2243 if (cap && capable(CAP_SYS_RESOURCE)) 2244 return true; 2245 return false; 2246 } 2247 2248 static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool); 2249 static inline int inc_valid_block_count(struct f2fs_sb_info *sbi, 2250 struct inode *inode, blkcnt_t *count) 2251 { 2252 blkcnt_t diff = 0, release = 0; 2253 block_t avail_user_block_count; 2254 int ret; 2255 2256 ret = dquot_reserve_block(inode, *count); 2257 if (ret) 2258 return ret; 2259 2260 if (time_to_inject(sbi, FAULT_BLOCK)) { 2261 f2fs_show_injection_info(sbi, FAULT_BLOCK); 2262 release = *count; 2263 goto release_quota; 2264 } 2265 2266 /* 2267 * let's increase this in prior to actual block count change in order 2268 * for f2fs_sync_file to avoid data races when deciding checkpoint. 2269 */ 2270 percpu_counter_add(&sbi->alloc_valid_block_count, (*count)); 2271 2272 spin_lock(&sbi->stat_lock); 2273 sbi->total_valid_block_count += (block_t)(*count); 2274 avail_user_block_count = sbi->user_block_count - 2275 sbi->current_reserved_blocks; 2276 2277 if (!__allow_reserved_blocks(sbi, inode, true)) 2278 avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks; 2279 2280 if (F2FS_IO_ALIGNED(sbi)) 2281 avail_user_block_count -= sbi->blocks_per_seg * 2282 SM_I(sbi)->additional_reserved_segments; 2283 2284 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 2285 if (avail_user_block_count > sbi->unusable_block_count) 2286 avail_user_block_count -= sbi->unusable_block_count; 2287 else 2288 avail_user_block_count = 0; 2289 } 2290 if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) { 2291 diff = sbi->total_valid_block_count - avail_user_block_count; 2292 if (diff > *count) 2293 diff = *count; 2294 *count -= diff; 2295 release = diff; 2296 sbi->total_valid_block_count -= diff; 2297 if (!*count) { 2298 spin_unlock(&sbi->stat_lock); 2299 goto enospc; 2300 } 2301 } 2302 spin_unlock(&sbi->stat_lock); 2303 2304 if (unlikely(release)) { 2305 percpu_counter_sub(&sbi->alloc_valid_block_count, release); 2306 dquot_release_reservation_block(inode, release); 2307 } 2308 f2fs_i_blocks_write(inode, *count, true, true); 2309 return 0; 2310 2311 enospc: 2312 percpu_counter_sub(&sbi->alloc_valid_block_count, release); 2313 release_quota: 2314 dquot_release_reservation_block(inode, release); 2315 return -ENOSPC; 2316 } 2317 2318 __printf(2, 3) 2319 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...); 2320 2321 #define f2fs_err(sbi, fmt, ...) \ 2322 f2fs_printk(sbi, KERN_ERR fmt, ##__VA_ARGS__) 2323 #define f2fs_warn(sbi, fmt, ...) \ 2324 f2fs_printk(sbi, KERN_WARNING fmt, ##__VA_ARGS__) 2325 #define f2fs_notice(sbi, fmt, ...) \ 2326 f2fs_printk(sbi, KERN_NOTICE fmt, ##__VA_ARGS__) 2327 #define f2fs_info(sbi, fmt, ...) \ 2328 f2fs_printk(sbi, KERN_INFO fmt, ##__VA_ARGS__) 2329 #define f2fs_debug(sbi, fmt, ...) \ 2330 f2fs_printk(sbi, KERN_DEBUG fmt, ##__VA_ARGS__) 2331 2332 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, 2333 struct inode *inode, 2334 block_t count) 2335 { 2336 blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK; 2337 2338 spin_lock(&sbi->stat_lock); 2339 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); 2340 sbi->total_valid_block_count -= (block_t)count; 2341 if (sbi->reserved_blocks && 2342 sbi->current_reserved_blocks < sbi->reserved_blocks) 2343 sbi->current_reserved_blocks = min(sbi->reserved_blocks, 2344 sbi->current_reserved_blocks + count); 2345 spin_unlock(&sbi->stat_lock); 2346 if (unlikely(inode->i_blocks < sectors)) { 2347 f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu, sectors:%llu", 2348 inode->i_ino, 2349 (unsigned long long)inode->i_blocks, 2350 (unsigned long long)sectors); 2351 set_sbi_flag(sbi, SBI_NEED_FSCK); 2352 return; 2353 } 2354 f2fs_i_blocks_write(inode, count, false, true); 2355 } 2356 2357 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) 2358 { 2359 atomic_inc(&sbi->nr_pages[count_type]); 2360 2361 if (count_type == F2FS_DIRTY_DENTS || 2362 count_type == F2FS_DIRTY_NODES || 2363 count_type == F2FS_DIRTY_META || 2364 count_type == F2FS_DIRTY_QDATA || 2365 count_type == F2FS_DIRTY_IMETA) 2366 set_sbi_flag(sbi, SBI_IS_DIRTY); 2367 } 2368 2369 static inline void inode_inc_dirty_pages(struct inode *inode) 2370 { 2371 atomic_inc(&F2FS_I(inode)->dirty_pages); 2372 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? 2373 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); 2374 if (IS_NOQUOTA(inode)) 2375 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA); 2376 } 2377 2378 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) 2379 { 2380 atomic_dec(&sbi->nr_pages[count_type]); 2381 } 2382 2383 static inline void inode_dec_dirty_pages(struct inode *inode) 2384 { 2385 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && 2386 !S_ISLNK(inode->i_mode)) 2387 return; 2388 2389 atomic_dec(&F2FS_I(inode)->dirty_pages); 2390 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? 2391 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); 2392 if (IS_NOQUOTA(inode)) 2393 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA); 2394 } 2395 2396 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type) 2397 { 2398 return atomic_read(&sbi->nr_pages[count_type]); 2399 } 2400 2401 static inline int get_dirty_pages(struct inode *inode) 2402 { 2403 return atomic_read(&F2FS_I(inode)->dirty_pages); 2404 } 2405 2406 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) 2407 { 2408 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg; 2409 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >> 2410 sbi->log_blocks_per_seg; 2411 2412 return segs / sbi->segs_per_sec; 2413 } 2414 2415 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) 2416 { 2417 return sbi->total_valid_block_count; 2418 } 2419 2420 static inline block_t discard_blocks(struct f2fs_sb_info *sbi) 2421 { 2422 return sbi->discard_blks; 2423 } 2424 2425 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) 2426 { 2427 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 2428 2429 /* return NAT or SIT bitmap */ 2430 if (flag == NAT_BITMAP) 2431 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 2432 else if (flag == SIT_BITMAP) 2433 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 2434 2435 return 0; 2436 } 2437 2438 static inline block_t __cp_payload(struct f2fs_sb_info *sbi) 2439 { 2440 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); 2441 } 2442 2443 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) 2444 { 2445 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 2446 void *tmp_ptr = &ckpt->sit_nat_version_bitmap; 2447 int offset; 2448 2449 if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) { 2450 offset = (flag == SIT_BITMAP) ? 2451 le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0; 2452 /* 2453 * if large_nat_bitmap feature is enabled, leave checksum 2454 * protection for all nat/sit bitmaps. 2455 */ 2456 return tmp_ptr + offset + sizeof(__le32); 2457 } 2458 2459 if (__cp_payload(sbi) > 0) { 2460 if (flag == NAT_BITMAP) 2461 return &ckpt->sit_nat_version_bitmap; 2462 else 2463 return (unsigned char *)ckpt + F2FS_BLKSIZE; 2464 } else { 2465 offset = (flag == NAT_BITMAP) ? 2466 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; 2467 return tmp_ptr + offset; 2468 } 2469 } 2470 2471 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) 2472 { 2473 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); 2474 2475 if (sbi->cur_cp_pack == 2) 2476 start_addr += sbi->blocks_per_seg; 2477 return start_addr; 2478 } 2479 2480 static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi) 2481 { 2482 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); 2483 2484 if (sbi->cur_cp_pack == 1) 2485 start_addr += sbi->blocks_per_seg; 2486 return start_addr; 2487 } 2488 2489 static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi) 2490 { 2491 sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1; 2492 } 2493 2494 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) 2495 { 2496 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); 2497 } 2498 2499 static inline int inc_valid_node_count(struct f2fs_sb_info *sbi, 2500 struct inode *inode, bool is_inode) 2501 { 2502 block_t valid_block_count; 2503 unsigned int valid_node_count, user_block_count; 2504 int err; 2505 2506 if (is_inode) { 2507 if (inode) { 2508 err = dquot_alloc_inode(inode); 2509 if (err) 2510 return err; 2511 } 2512 } else { 2513 err = dquot_reserve_block(inode, 1); 2514 if (err) 2515 return err; 2516 } 2517 2518 if (time_to_inject(sbi, FAULT_BLOCK)) { 2519 f2fs_show_injection_info(sbi, FAULT_BLOCK); 2520 goto enospc; 2521 } 2522 2523 spin_lock(&sbi->stat_lock); 2524 2525 valid_block_count = sbi->total_valid_block_count + 2526 sbi->current_reserved_blocks + 1; 2527 2528 if (!__allow_reserved_blocks(sbi, inode, false)) 2529 valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks; 2530 2531 if (F2FS_IO_ALIGNED(sbi)) 2532 valid_block_count += sbi->blocks_per_seg * 2533 SM_I(sbi)->additional_reserved_segments; 2534 2535 user_block_count = sbi->user_block_count; 2536 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 2537 user_block_count -= sbi->unusable_block_count; 2538 2539 if (unlikely(valid_block_count > user_block_count)) { 2540 spin_unlock(&sbi->stat_lock); 2541 goto enospc; 2542 } 2543 2544 valid_node_count = sbi->total_valid_node_count + 1; 2545 if (unlikely(valid_node_count > sbi->total_node_count)) { 2546 spin_unlock(&sbi->stat_lock); 2547 goto enospc; 2548 } 2549 2550 sbi->total_valid_node_count++; 2551 sbi->total_valid_block_count++; 2552 spin_unlock(&sbi->stat_lock); 2553 2554 if (inode) { 2555 if (is_inode) 2556 f2fs_mark_inode_dirty_sync(inode, true); 2557 else 2558 f2fs_i_blocks_write(inode, 1, true, true); 2559 } 2560 2561 percpu_counter_inc(&sbi->alloc_valid_block_count); 2562 return 0; 2563 2564 enospc: 2565 if (is_inode) { 2566 if (inode) 2567 dquot_free_inode(inode); 2568 } else { 2569 dquot_release_reservation_block(inode, 1); 2570 } 2571 return -ENOSPC; 2572 } 2573 2574 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, 2575 struct inode *inode, bool is_inode) 2576 { 2577 spin_lock(&sbi->stat_lock); 2578 2579 f2fs_bug_on(sbi, !sbi->total_valid_block_count); 2580 f2fs_bug_on(sbi, !sbi->total_valid_node_count); 2581 2582 sbi->total_valid_node_count--; 2583 sbi->total_valid_block_count--; 2584 if (sbi->reserved_blocks && 2585 sbi->current_reserved_blocks < sbi->reserved_blocks) 2586 sbi->current_reserved_blocks++; 2587 2588 spin_unlock(&sbi->stat_lock); 2589 2590 if (is_inode) { 2591 dquot_free_inode(inode); 2592 } else { 2593 if (unlikely(inode->i_blocks == 0)) { 2594 f2fs_warn(sbi, "dec_valid_node_count: inconsistent i_blocks, ino:%lu, iblocks:%llu", 2595 inode->i_ino, 2596 (unsigned long long)inode->i_blocks); 2597 set_sbi_flag(sbi, SBI_NEED_FSCK); 2598 return; 2599 } 2600 f2fs_i_blocks_write(inode, 1, false, true); 2601 } 2602 } 2603 2604 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) 2605 { 2606 return sbi->total_valid_node_count; 2607 } 2608 2609 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) 2610 { 2611 percpu_counter_inc(&sbi->total_valid_inode_count); 2612 } 2613 2614 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) 2615 { 2616 percpu_counter_dec(&sbi->total_valid_inode_count); 2617 } 2618 2619 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi) 2620 { 2621 return percpu_counter_sum_positive(&sbi->total_valid_inode_count); 2622 } 2623 2624 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping, 2625 pgoff_t index, bool for_write) 2626 { 2627 struct page *page; 2628 2629 if (IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) { 2630 if (!for_write) 2631 page = find_get_page_flags(mapping, index, 2632 FGP_LOCK | FGP_ACCESSED); 2633 else 2634 page = find_lock_page(mapping, index); 2635 if (page) 2636 return page; 2637 2638 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) { 2639 f2fs_show_injection_info(F2FS_M_SB(mapping), 2640 FAULT_PAGE_ALLOC); 2641 return NULL; 2642 } 2643 } 2644 2645 if (!for_write) 2646 return grab_cache_page(mapping, index); 2647 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS); 2648 } 2649 2650 static inline struct page *f2fs_pagecache_get_page( 2651 struct address_space *mapping, pgoff_t index, 2652 int fgp_flags, gfp_t gfp_mask) 2653 { 2654 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) { 2655 f2fs_show_injection_info(F2FS_M_SB(mapping), FAULT_PAGE_GET); 2656 return NULL; 2657 } 2658 2659 return pagecache_get_page(mapping, index, fgp_flags, gfp_mask); 2660 } 2661 2662 static inline void f2fs_copy_page(struct page *src, struct page *dst) 2663 { 2664 char *src_kaddr = kmap(src); 2665 char *dst_kaddr = kmap(dst); 2666 2667 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE); 2668 kunmap(dst); 2669 kunmap(src); 2670 } 2671 2672 static inline void f2fs_put_page(struct page *page, int unlock) 2673 { 2674 if (!page) 2675 return; 2676 2677 if (unlock) { 2678 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); 2679 unlock_page(page); 2680 } 2681 put_page(page); 2682 } 2683 2684 static inline void f2fs_put_dnode(struct dnode_of_data *dn) 2685 { 2686 if (dn->node_page) 2687 f2fs_put_page(dn->node_page, 1); 2688 if (dn->inode_page && dn->node_page != dn->inode_page) 2689 f2fs_put_page(dn->inode_page, 0); 2690 dn->node_page = NULL; 2691 dn->inode_page = NULL; 2692 } 2693 2694 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, 2695 size_t size) 2696 { 2697 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); 2698 } 2699 2700 static inline void *f2fs_kmem_cache_alloc_nofail(struct kmem_cache *cachep, 2701 gfp_t flags) 2702 { 2703 void *entry; 2704 2705 entry = kmem_cache_alloc(cachep, flags); 2706 if (!entry) 2707 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL); 2708 return entry; 2709 } 2710 2711 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, 2712 gfp_t flags, bool nofail, struct f2fs_sb_info *sbi) 2713 { 2714 if (nofail) 2715 return f2fs_kmem_cache_alloc_nofail(cachep, flags); 2716 2717 if (time_to_inject(sbi, FAULT_SLAB_ALLOC)) { 2718 f2fs_show_injection_info(sbi, FAULT_SLAB_ALLOC); 2719 return NULL; 2720 } 2721 2722 return kmem_cache_alloc(cachep, flags); 2723 } 2724 2725 static inline bool is_inflight_io(struct f2fs_sb_info *sbi, int type) 2726 { 2727 if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) || 2728 get_pages(sbi, F2FS_RD_META) || get_pages(sbi, F2FS_WB_DATA) || 2729 get_pages(sbi, F2FS_WB_CP_DATA) || 2730 get_pages(sbi, F2FS_DIO_READ) || 2731 get_pages(sbi, F2FS_DIO_WRITE)) 2732 return true; 2733 2734 if (type != DISCARD_TIME && SM_I(sbi) && SM_I(sbi)->dcc_info && 2735 atomic_read(&SM_I(sbi)->dcc_info->queued_discard)) 2736 return true; 2737 2738 if (SM_I(sbi) && SM_I(sbi)->fcc_info && 2739 atomic_read(&SM_I(sbi)->fcc_info->queued_flush)) 2740 return true; 2741 return false; 2742 } 2743 2744 static inline bool is_idle(struct f2fs_sb_info *sbi, int type) 2745 { 2746 if (sbi->gc_mode == GC_URGENT_HIGH) 2747 return true; 2748 2749 if (is_inflight_io(sbi, type)) 2750 return false; 2751 2752 if (sbi->gc_mode == GC_URGENT_LOW && 2753 (type == DISCARD_TIME || type == GC_TIME)) 2754 return true; 2755 2756 return f2fs_time_over(sbi, type); 2757 } 2758 2759 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root, 2760 unsigned long index, void *item) 2761 { 2762 while (radix_tree_insert(root, index, item)) 2763 cond_resched(); 2764 } 2765 2766 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) 2767 2768 static inline bool IS_INODE(struct page *page) 2769 { 2770 struct f2fs_node *p = F2FS_NODE(page); 2771 2772 return RAW_IS_INODE(p); 2773 } 2774 2775 static inline int offset_in_addr(struct f2fs_inode *i) 2776 { 2777 return (i->i_inline & F2FS_EXTRA_ATTR) ? 2778 (le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0; 2779 } 2780 2781 static inline __le32 *blkaddr_in_node(struct f2fs_node *node) 2782 { 2783 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; 2784 } 2785 2786 static inline int f2fs_has_extra_attr(struct inode *inode); 2787 static inline block_t data_blkaddr(struct inode *inode, 2788 struct page *node_page, unsigned int offset) 2789 { 2790 struct f2fs_node *raw_node; 2791 __le32 *addr_array; 2792 int base = 0; 2793 bool is_inode = IS_INODE(node_page); 2794 2795 raw_node = F2FS_NODE(node_page); 2796 2797 if (is_inode) { 2798 if (!inode) 2799 /* from GC path only */ 2800 base = offset_in_addr(&raw_node->i); 2801 else if (f2fs_has_extra_attr(inode)) 2802 base = get_extra_isize(inode); 2803 } 2804 2805 addr_array = blkaddr_in_node(raw_node); 2806 return le32_to_cpu(addr_array[base + offset]); 2807 } 2808 2809 static inline block_t f2fs_data_blkaddr(struct dnode_of_data *dn) 2810 { 2811 return data_blkaddr(dn->inode, dn->node_page, dn->ofs_in_node); 2812 } 2813 2814 static inline int f2fs_test_bit(unsigned int nr, char *addr) 2815 { 2816 int mask; 2817 2818 addr += (nr >> 3); 2819 mask = 1 << (7 - (nr & 0x07)); 2820 return mask & *addr; 2821 } 2822 2823 static inline void f2fs_set_bit(unsigned int nr, char *addr) 2824 { 2825 int mask; 2826 2827 addr += (nr >> 3); 2828 mask = 1 << (7 - (nr & 0x07)); 2829 *addr |= mask; 2830 } 2831 2832 static inline void f2fs_clear_bit(unsigned int nr, char *addr) 2833 { 2834 int mask; 2835 2836 addr += (nr >> 3); 2837 mask = 1 << (7 - (nr & 0x07)); 2838 *addr &= ~mask; 2839 } 2840 2841 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr) 2842 { 2843 int mask; 2844 int ret; 2845 2846 addr += (nr >> 3); 2847 mask = 1 << (7 - (nr & 0x07)); 2848 ret = mask & *addr; 2849 *addr |= mask; 2850 return ret; 2851 } 2852 2853 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr) 2854 { 2855 int mask; 2856 int ret; 2857 2858 addr += (nr >> 3); 2859 mask = 1 << (7 - (nr & 0x07)); 2860 ret = mask & *addr; 2861 *addr &= ~mask; 2862 return ret; 2863 } 2864 2865 static inline void f2fs_change_bit(unsigned int nr, char *addr) 2866 { 2867 int mask; 2868 2869 addr += (nr >> 3); 2870 mask = 1 << (7 - (nr & 0x07)); 2871 *addr ^= mask; 2872 } 2873 2874 /* 2875 * On-disk inode flags (f2fs_inode::i_flags) 2876 */ 2877 #define F2FS_COMPR_FL 0x00000004 /* Compress file */ 2878 #define F2FS_SYNC_FL 0x00000008 /* Synchronous updates */ 2879 #define F2FS_IMMUTABLE_FL 0x00000010 /* Immutable file */ 2880 #define F2FS_APPEND_FL 0x00000020 /* writes to file may only append */ 2881 #define F2FS_NODUMP_FL 0x00000040 /* do not dump file */ 2882 #define F2FS_NOATIME_FL 0x00000080 /* do not update atime */ 2883 #define F2FS_NOCOMP_FL 0x00000400 /* Don't compress */ 2884 #define F2FS_INDEX_FL 0x00001000 /* hash-indexed directory */ 2885 #define F2FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */ 2886 #define F2FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ 2887 #define F2FS_CASEFOLD_FL 0x40000000 /* Casefolded file */ 2888 2889 /* Flags that should be inherited by new inodes from their parent. */ 2890 #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \ 2891 F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \ 2892 F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL) 2893 2894 /* Flags that are appropriate for regular files (all but dir-specific ones). */ 2895 #define F2FS_REG_FLMASK (~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \ 2896 F2FS_CASEFOLD_FL)) 2897 2898 /* Flags that are appropriate for non-directories/regular files. */ 2899 #define F2FS_OTHER_FLMASK (F2FS_NODUMP_FL | F2FS_NOATIME_FL) 2900 2901 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) 2902 { 2903 if (S_ISDIR(mode)) 2904 return flags; 2905 else if (S_ISREG(mode)) 2906 return flags & F2FS_REG_FLMASK; 2907 else 2908 return flags & F2FS_OTHER_FLMASK; 2909 } 2910 2911 static inline void __mark_inode_dirty_flag(struct inode *inode, 2912 int flag, bool set) 2913 { 2914 switch (flag) { 2915 case FI_INLINE_XATTR: 2916 case FI_INLINE_DATA: 2917 case FI_INLINE_DENTRY: 2918 case FI_NEW_INODE: 2919 if (set) 2920 return; 2921 fallthrough; 2922 case FI_DATA_EXIST: 2923 case FI_INLINE_DOTS: 2924 case FI_PIN_FILE: 2925 case FI_COMPRESS_RELEASED: 2926 f2fs_mark_inode_dirty_sync(inode, true); 2927 } 2928 } 2929 2930 static inline void set_inode_flag(struct inode *inode, int flag) 2931 { 2932 set_bit(flag, F2FS_I(inode)->flags); 2933 __mark_inode_dirty_flag(inode, flag, true); 2934 } 2935 2936 static inline int is_inode_flag_set(struct inode *inode, int flag) 2937 { 2938 return test_bit(flag, F2FS_I(inode)->flags); 2939 } 2940 2941 static inline void clear_inode_flag(struct inode *inode, int flag) 2942 { 2943 clear_bit(flag, F2FS_I(inode)->flags); 2944 __mark_inode_dirty_flag(inode, flag, false); 2945 } 2946 2947 static inline bool f2fs_verity_in_progress(struct inode *inode) 2948 { 2949 return IS_ENABLED(CONFIG_FS_VERITY) && 2950 is_inode_flag_set(inode, FI_VERITY_IN_PROGRESS); 2951 } 2952 2953 static inline void set_acl_inode(struct inode *inode, umode_t mode) 2954 { 2955 F2FS_I(inode)->i_acl_mode = mode; 2956 set_inode_flag(inode, FI_ACL_MODE); 2957 f2fs_mark_inode_dirty_sync(inode, false); 2958 } 2959 2960 static inline void f2fs_i_links_write(struct inode *inode, bool inc) 2961 { 2962 if (inc) 2963 inc_nlink(inode); 2964 else 2965 drop_nlink(inode); 2966 f2fs_mark_inode_dirty_sync(inode, true); 2967 } 2968 2969 static inline void f2fs_i_blocks_write(struct inode *inode, 2970 block_t diff, bool add, bool claim) 2971 { 2972 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); 2973 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); 2974 2975 /* add = 1, claim = 1 should be dquot_reserve_block in pair */ 2976 if (add) { 2977 if (claim) 2978 dquot_claim_block(inode, diff); 2979 else 2980 dquot_alloc_block_nofail(inode, diff); 2981 } else { 2982 dquot_free_block(inode, diff); 2983 } 2984 2985 f2fs_mark_inode_dirty_sync(inode, true); 2986 if (clean || recover) 2987 set_inode_flag(inode, FI_AUTO_RECOVER); 2988 } 2989 2990 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size) 2991 { 2992 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); 2993 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); 2994 2995 if (i_size_read(inode) == i_size) 2996 return; 2997 2998 i_size_write(inode, i_size); 2999 f2fs_mark_inode_dirty_sync(inode, true); 3000 if (clean || recover) 3001 set_inode_flag(inode, FI_AUTO_RECOVER); 3002 } 3003 3004 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth) 3005 { 3006 F2FS_I(inode)->i_current_depth = depth; 3007 f2fs_mark_inode_dirty_sync(inode, true); 3008 } 3009 3010 static inline void f2fs_i_gc_failures_write(struct inode *inode, 3011 unsigned int count) 3012 { 3013 F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = count; 3014 f2fs_mark_inode_dirty_sync(inode, true); 3015 } 3016 3017 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid) 3018 { 3019 F2FS_I(inode)->i_xattr_nid = xnid; 3020 f2fs_mark_inode_dirty_sync(inode, true); 3021 } 3022 3023 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino) 3024 { 3025 F2FS_I(inode)->i_pino = pino; 3026 f2fs_mark_inode_dirty_sync(inode, true); 3027 } 3028 3029 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri) 3030 { 3031 struct f2fs_inode_info *fi = F2FS_I(inode); 3032 3033 if (ri->i_inline & F2FS_INLINE_XATTR) 3034 set_bit(FI_INLINE_XATTR, fi->flags); 3035 if (ri->i_inline & F2FS_INLINE_DATA) 3036 set_bit(FI_INLINE_DATA, fi->flags); 3037 if (ri->i_inline & F2FS_INLINE_DENTRY) 3038 set_bit(FI_INLINE_DENTRY, fi->flags); 3039 if (ri->i_inline & F2FS_DATA_EXIST) 3040 set_bit(FI_DATA_EXIST, fi->flags); 3041 if (ri->i_inline & F2FS_INLINE_DOTS) 3042 set_bit(FI_INLINE_DOTS, fi->flags); 3043 if (ri->i_inline & F2FS_EXTRA_ATTR) 3044 set_bit(FI_EXTRA_ATTR, fi->flags); 3045 if (ri->i_inline & F2FS_PIN_FILE) 3046 set_bit(FI_PIN_FILE, fi->flags); 3047 if (ri->i_inline & F2FS_COMPRESS_RELEASED) 3048 set_bit(FI_COMPRESS_RELEASED, fi->flags); 3049 } 3050 3051 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri) 3052 { 3053 ri->i_inline = 0; 3054 3055 if (is_inode_flag_set(inode, FI_INLINE_XATTR)) 3056 ri->i_inline |= F2FS_INLINE_XATTR; 3057 if (is_inode_flag_set(inode, FI_INLINE_DATA)) 3058 ri->i_inline |= F2FS_INLINE_DATA; 3059 if (is_inode_flag_set(inode, FI_INLINE_DENTRY)) 3060 ri->i_inline |= F2FS_INLINE_DENTRY; 3061 if (is_inode_flag_set(inode, FI_DATA_EXIST)) 3062 ri->i_inline |= F2FS_DATA_EXIST; 3063 if (is_inode_flag_set(inode, FI_INLINE_DOTS)) 3064 ri->i_inline |= F2FS_INLINE_DOTS; 3065 if (is_inode_flag_set(inode, FI_EXTRA_ATTR)) 3066 ri->i_inline |= F2FS_EXTRA_ATTR; 3067 if (is_inode_flag_set(inode, FI_PIN_FILE)) 3068 ri->i_inline |= F2FS_PIN_FILE; 3069 if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) 3070 ri->i_inline |= F2FS_COMPRESS_RELEASED; 3071 } 3072 3073 static inline int f2fs_has_extra_attr(struct inode *inode) 3074 { 3075 return is_inode_flag_set(inode, FI_EXTRA_ATTR); 3076 } 3077 3078 static inline int f2fs_has_inline_xattr(struct inode *inode) 3079 { 3080 return is_inode_flag_set(inode, FI_INLINE_XATTR); 3081 } 3082 3083 static inline int f2fs_compressed_file(struct inode *inode) 3084 { 3085 return S_ISREG(inode->i_mode) && 3086 is_inode_flag_set(inode, FI_COMPRESSED_FILE); 3087 } 3088 3089 static inline bool f2fs_need_compress_data(struct inode *inode) 3090 { 3091 int compress_mode = F2FS_OPTION(F2FS_I_SB(inode)).compress_mode; 3092 3093 if (!f2fs_compressed_file(inode)) 3094 return false; 3095 3096 if (compress_mode == COMPR_MODE_FS) 3097 return true; 3098 else if (compress_mode == COMPR_MODE_USER && 3099 is_inode_flag_set(inode, FI_ENABLE_COMPRESS)) 3100 return true; 3101 3102 return false; 3103 } 3104 3105 static inline unsigned int addrs_per_inode(struct inode *inode) 3106 { 3107 unsigned int addrs = CUR_ADDRS_PER_INODE(inode) - 3108 get_inline_xattr_addrs(inode); 3109 3110 if (!f2fs_compressed_file(inode)) 3111 return addrs; 3112 return ALIGN_DOWN(addrs, F2FS_I(inode)->i_cluster_size); 3113 } 3114 3115 static inline unsigned int addrs_per_block(struct inode *inode) 3116 { 3117 if (!f2fs_compressed_file(inode)) 3118 return DEF_ADDRS_PER_BLOCK; 3119 return ALIGN_DOWN(DEF_ADDRS_PER_BLOCK, F2FS_I(inode)->i_cluster_size); 3120 } 3121 3122 static inline void *inline_xattr_addr(struct inode *inode, struct page *page) 3123 { 3124 struct f2fs_inode *ri = F2FS_INODE(page); 3125 3126 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - 3127 get_inline_xattr_addrs(inode)]); 3128 } 3129 3130 static inline int inline_xattr_size(struct inode *inode) 3131 { 3132 if (f2fs_has_inline_xattr(inode)) 3133 return get_inline_xattr_addrs(inode) * sizeof(__le32); 3134 return 0; 3135 } 3136 3137 static inline int f2fs_has_inline_data(struct inode *inode) 3138 { 3139 return is_inode_flag_set(inode, FI_INLINE_DATA); 3140 } 3141 3142 static inline int f2fs_exist_data(struct inode *inode) 3143 { 3144 return is_inode_flag_set(inode, FI_DATA_EXIST); 3145 } 3146 3147 static inline int f2fs_has_inline_dots(struct inode *inode) 3148 { 3149 return is_inode_flag_set(inode, FI_INLINE_DOTS); 3150 } 3151 3152 static inline int f2fs_is_mmap_file(struct inode *inode) 3153 { 3154 return is_inode_flag_set(inode, FI_MMAP_FILE); 3155 } 3156 3157 static inline bool f2fs_is_pinned_file(struct inode *inode) 3158 { 3159 return is_inode_flag_set(inode, FI_PIN_FILE); 3160 } 3161 3162 static inline bool f2fs_is_atomic_file(struct inode *inode) 3163 { 3164 return is_inode_flag_set(inode, FI_ATOMIC_FILE); 3165 } 3166 3167 static inline bool f2fs_is_commit_atomic_write(struct inode *inode) 3168 { 3169 return is_inode_flag_set(inode, FI_ATOMIC_COMMIT); 3170 } 3171 3172 static inline bool f2fs_is_volatile_file(struct inode *inode) 3173 { 3174 return is_inode_flag_set(inode, FI_VOLATILE_FILE); 3175 } 3176 3177 static inline bool f2fs_is_first_block_written(struct inode *inode) 3178 { 3179 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN); 3180 } 3181 3182 static inline bool f2fs_is_drop_cache(struct inode *inode) 3183 { 3184 return is_inode_flag_set(inode, FI_DROP_CACHE); 3185 } 3186 3187 static inline void *inline_data_addr(struct inode *inode, struct page *page) 3188 { 3189 struct f2fs_inode *ri = F2FS_INODE(page); 3190 int extra_size = get_extra_isize(inode); 3191 3192 return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]); 3193 } 3194 3195 static inline int f2fs_has_inline_dentry(struct inode *inode) 3196 { 3197 return is_inode_flag_set(inode, FI_INLINE_DENTRY); 3198 } 3199 3200 static inline int is_file(struct inode *inode, int type) 3201 { 3202 return F2FS_I(inode)->i_advise & type; 3203 } 3204 3205 static inline void set_file(struct inode *inode, int type) 3206 { 3207 if (is_file(inode, type)) 3208 return; 3209 F2FS_I(inode)->i_advise |= type; 3210 f2fs_mark_inode_dirty_sync(inode, true); 3211 } 3212 3213 static inline void clear_file(struct inode *inode, int type) 3214 { 3215 if (!is_file(inode, type)) 3216 return; 3217 F2FS_I(inode)->i_advise &= ~type; 3218 f2fs_mark_inode_dirty_sync(inode, true); 3219 } 3220 3221 static inline bool f2fs_is_time_consistent(struct inode *inode) 3222 { 3223 if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime)) 3224 return false; 3225 if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime)) 3226 return false; 3227 if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime)) 3228 return false; 3229 if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 3, 3230 &F2FS_I(inode)->i_crtime)) 3231 return false; 3232 return true; 3233 } 3234 3235 static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync) 3236 { 3237 bool ret; 3238 3239 if (dsync) { 3240 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3241 3242 spin_lock(&sbi->inode_lock[DIRTY_META]); 3243 ret = list_empty(&F2FS_I(inode)->gdirty_list); 3244 spin_unlock(&sbi->inode_lock[DIRTY_META]); 3245 return ret; 3246 } 3247 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) || 3248 file_keep_isize(inode) || 3249 i_size_read(inode) & ~PAGE_MASK) 3250 return false; 3251 3252 if (!f2fs_is_time_consistent(inode)) 3253 return false; 3254 3255 spin_lock(&F2FS_I(inode)->i_size_lock); 3256 ret = F2FS_I(inode)->last_disk_size == i_size_read(inode); 3257 spin_unlock(&F2FS_I(inode)->i_size_lock); 3258 3259 return ret; 3260 } 3261 3262 static inline bool f2fs_readonly(struct super_block *sb) 3263 { 3264 return sb_rdonly(sb); 3265 } 3266 3267 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) 3268 { 3269 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG); 3270 } 3271 3272 static inline bool is_dot_dotdot(const u8 *name, size_t len) 3273 { 3274 if (len == 1 && name[0] == '.') 3275 return true; 3276 3277 if (len == 2 && name[0] == '.' && name[1] == '.') 3278 return true; 3279 3280 return false; 3281 } 3282 3283 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi, 3284 size_t size, gfp_t flags) 3285 { 3286 if (time_to_inject(sbi, FAULT_KMALLOC)) { 3287 f2fs_show_injection_info(sbi, FAULT_KMALLOC); 3288 return NULL; 3289 } 3290 3291 return kmalloc(size, flags); 3292 } 3293 3294 static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi, 3295 size_t size, gfp_t flags) 3296 { 3297 return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO); 3298 } 3299 3300 static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi, 3301 size_t size, gfp_t flags) 3302 { 3303 if (time_to_inject(sbi, FAULT_KVMALLOC)) { 3304 f2fs_show_injection_info(sbi, FAULT_KVMALLOC); 3305 return NULL; 3306 } 3307 3308 return kvmalloc(size, flags); 3309 } 3310 3311 static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi, 3312 size_t size, gfp_t flags) 3313 { 3314 return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO); 3315 } 3316 3317 static inline int get_extra_isize(struct inode *inode) 3318 { 3319 return F2FS_I(inode)->i_extra_isize / sizeof(__le32); 3320 } 3321 3322 static inline int get_inline_xattr_addrs(struct inode *inode) 3323 { 3324 return F2FS_I(inode)->i_inline_xattr_size; 3325 } 3326 3327 #define f2fs_get_inode_mode(i) \ 3328 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \ 3329 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) 3330 3331 #define F2FS_TOTAL_EXTRA_ATTR_SIZE \ 3332 (offsetof(struct f2fs_inode, i_extra_end) - \ 3333 offsetof(struct f2fs_inode, i_extra_isize)) \ 3334 3335 #define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr)) 3336 #define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \ 3337 ((offsetof(typeof(*(f2fs_inode)), field) + \ 3338 sizeof((f2fs_inode)->field)) \ 3339 <= (F2FS_OLD_ATTRIBUTE_SIZE + (extra_isize))) \ 3340 3341 #define __is_large_section(sbi) ((sbi)->segs_per_sec > 1) 3342 3343 #define __is_meta_io(fio) (PAGE_TYPE_OF_BIO((fio)->type) == META) 3344 3345 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi, 3346 block_t blkaddr, int type); 3347 static inline void verify_blkaddr(struct f2fs_sb_info *sbi, 3348 block_t blkaddr, int type) 3349 { 3350 if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) { 3351 f2fs_err(sbi, "invalid blkaddr: %u, type: %d, run fsck to fix.", 3352 blkaddr, type); 3353 f2fs_bug_on(sbi, 1); 3354 } 3355 } 3356 3357 static inline bool __is_valid_data_blkaddr(block_t blkaddr) 3358 { 3359 if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR || 3360 blkaddr == COMPRESS_ADDR) 3361 return false; 3362 return true; 3363 } 3364 3365 /* 3366 * file.c 3367 */ 3368 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); 3369 void f2fs_truncate_data_blocks(struct dnode_of_data *dn); 3370 int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock); 3371 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock); 3372 int f2fs_truncate(struct inode *inode); 3373 int f2fs_getattr(struct user_namespace *mnt_userns, const struct path *path, 3374 struct kstat *stat, u32 request_mask, unsigned int flags); 3375 int f2fs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, 3376 struct iattr *attr); 3377 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end); 3378 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count); 3379 int f2fs_precache_extents(struct inode *inode); 3380 int f2fs_fileattr_get(struct dentry *dentry, struct fileattr *fa); 3381 int f2fs_fileattr_set(struct user_namespace *mnt_userns, 3382 struct dentry *dentry, struct fileattr *fa); 3383 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); 3384 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 3385 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid); 3386 int f2fs_pin_file_control(struct inode *inode, bool inc); 3387 3388 /* 3389 * inode.c 3390 */ 3391 void f2fs_set_inode_flags(struct inode *inode); 3392 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page); 3393 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page); 3394 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino); 3395 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino); 3396 int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink); 3397 void f2fs_update_inode(struct inode *inode, struct page *node_page); 3398 void f2fs_update_inode_page(struct inode *inode); 3399 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc); 3400 void f2fs_evict_inode(struct inode *inode); 3401 void f2fs_handle_failed_inode(struct inode *inode); 3402 3403 /* 3404 * namei.c 3405 */ 3406 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, 3407 bool hot, bool set); 3408 struct dentry *f2fs_get_parent(struct dentry *child); 3409 3410 /* 3411 * dir.c 3412 */ 3413 unsigned char f2fs_get_de_type(struct f2fs_dir_entry *de); 3414 int f2fs_init_casefolded_name(const struct inode *dir, 3415 struct f2fs_filename *fname); 3416 int f2fs_setup_filename(struct inode *dir, const struct qstr *iname, 3417 int lookup, struct f2fs_filename *fname); 3418 int f2fs_prepare_lookup(struct inode *dir, struct dentry *dentry, 3419 struct f2fs_filename *fname); 3420 void f2fs_free_filename(struct f2fs_filename *fname); 3421 struct f2fs_dir_entry *f2fs_find_target_dentry(const struct f2fs_dentry_ptr *d, 3422 const struct f2fs_filename *fname, int *max_slots); 3423 int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d, 3424 unsigned int start_pos, struct fscrypt_str *fstr); 3425 void f2fs_do_make_empty_dir(struct inode *inode, struct inode *parent, 3426 struct f2fs_dentry_ptr *d); 3427 struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir, 3428 const struct f2fs_filename *fname, struct page *dpage); 3429 void f2fs_update_parent_metadata(struct inode *dir, struct inode *inode, 3430 unsigned int current_depth); 3431 int f2fs_room_for_filename(const void *bitmap, int slots, int max_slots); 3432 void f2fs_drop_nlink(struct inode *dir, struct inode *inode); 3433 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir, 3434 const struct f2fs_filename *fname, 3435 struct page **res_page); 3436 struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir, 3437 const struct qstr *child, struct page **res_page); 3438 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p); 3439 ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr, 3440 struct page **page); 3441 void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de, 3442 struct page *page, struct inode *inode); 3443 bool f2fs_has_enough_room(struct inode *dir, struct page *ipage, 3444 const struct f2fs_filename *fname); 3445 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d, 3446 const struct fscrypt_str *name, f2fs_hash_t name_hash, 3447 unsigned int bit_pos); 3448 int f2fs_add_regular_entry(struct inode *dir, const struct f2fs_filename *fname, 3449 struct inode *inode, nid_t ino, umode_t mode); 3450 int f2fs_add_dentry(struct inode *dir, const struct f2fs_filename *fname, 3451 struct inode *inode, nid_t ino, umode_t mode); 3452 int f2fs_do_add_link(struct inode *dir, const struct qstr *name, 3453 struct inode *inode, nid_t ino, umode_t mode); 3454 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, 3455 struct inode *dir, struct inode *inode); 3456 int f2fs_do_tmpfile(struct inode *inode, struct inode *dir); 3457 bool f2fs_empty_dir(struct inode *dir); 3458 3459 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) 3460 { 3461 if (fscrypt_is_nokey_name(dentry)) 3462 return -ENOKEY; 3463 return f2fs_do_add_link(d_inode(dentry->d_parent), &dentry->d_name, 3464 inode, inode->i_ino, inode->i_mode); 3465 } 3466 3467 /* 3468 * super.c 3469 */ 3470 int f2fs_inode_dirtied(struct inode *inode, bool sync); 3471 void f2fs_inode_synced(struct inode *inode); 3472 int f2fs_dquot_initialize(struct inode *inode); 3473 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly); 3474 int f2fs_quota_sync(struct super_block *sb, int type); 3475 loff_t max_file_blocks(struct inode *inode); 3476 void f2fs_quota_off_umount(struct super_block *sb); 3477 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover); 3478 int f2fs_sync_fs(struct super_block *sb, int sync); 3479 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi); 3480 3481 /* 3482 * hash.c 3483 */ 3484 void f2fs_hash_filename(const struct inode *dir, struct f2fs_filename *fname); 3485 3486 /* 3487 * node.c 3488 */ 3489 struct node_info; 3490 3491 int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid); 3492 bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type); 3493 bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page); 3494 void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi); 3495 void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page); 3496 void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi); 3497 int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid); 3498 bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid); 3499 bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino); 3500 int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, 3501 struct node_info *ni, bool checkpoint_context); 3502 pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs); 3503 int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode); 3504 int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from); 3505 int f2fs_truncate_xattr_node(struct inode *inode); 3506 int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, 3507 unsigned int seq_id); 3508 bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi); 3509 int f2fs_remove_inode_page(struct inode *inode); 3510 struct page *f2fs_new_inode_page(struct inode *inode); 3511 struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs); 3512 void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid); 3513 struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid); 3514 struct page *f2fs_get_node_page_ra(struct page *parent, int start); 3515 int f2fs_move_node_page(struct page *node_page, int gc_type); 3516 void f2fs_flush_inline_data(struct f2fs_sb_info *sbi); 3517 int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, 3518 struct writeback_control *wbc, bool atomic, 3519 unsigned int *seq_id); 3520 int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, 3521 struct writeback_control *wbc, 3522 bool do_balance, enum iostat_type io_type); 3523 int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount); 3524 bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid); 3525 void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid); 3526 void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid); 3527 int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink); 3528 int f2fs_recover_inline_xattr(struct inode *inode, struct page *page); 3529 int f2fs_recover_xattr_data(struct inode *inode, struct page *page); 3530 int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page); 3531 int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, 3532 unsigned int segno, struct f2fs_summary_block *sum); 3533 void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi); 3534 int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc); 3535 int f2fs_build_node_manager(struct f2fs_sb_info *sbi); 3536 void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi); 3537 int __init f2fs_create_node_manager_caches(void); 3538 void f2fs_destroy_node_manager_caches(void); 3539 3540 /* 3541 * segment.c 3542 */ 3543 bool f2fs_need_SSR(struct f2fs_sb_info *sbi); 3544 void f2fs_register_inmem_page(struct inode *inode, struct page *page); 3545 void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure); 3546 void f2fs_drop_inmem_pages(struct inode *inode); 3547 void f2fs_drop_inmem_page(struct inode *inode, struct page *page); 3548 int f2fs_commit_inmem_pages(struct inode *inode); 3549 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need); 3550 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg); 3551 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino); 3552 int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi); 3553 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi); 3554 void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free); 3555 void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr); 3556 bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr); 3557 int f2fs_start_discard_thread(struct f2fs_sb_info *sbi); 3558 void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi); 3559 void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi); 3560 bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi); 3561 void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi, 3562 struct cp_control *cpc); 3563 void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi); 3564 block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi); 3565 int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable); 3566 void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi); 3567 int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra); 3568 bool f2fs_segment_has_free_slot(struct f2fs_sb_info *sbi, int segno); 3569 void f2fs_init_inmem_curseg(struct f2fs_sb_info *sbi); 3570 void f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi); 3571 void f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi); 3572 void f2fs_get_new_segment(struct f2fs_sb_info *sbi, 3573 unsigned int *newseg, bool new_sec, int dir); 3574 void f2fs_allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type, 3575 unsigned int start, unsigned int end); 3576 void f2fs_allocate_new_section(struct f2fs_sb_info *sbi, int type, bool force); 3577 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi); 3578 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range); 3579 bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi, 3580 struct cp_control *cpc); 3581 struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno); 3582 void f2fs_update_meta_page(struct f2fs_sb_info *sbi, void *src, 3583 block_t blk_addr); 3584 void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page, 3585 enum iostat_type io_type); 3586 void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio); 3587 void f2fs_outplace_write_data(struct dnode_of_data *dn, 3588 struct f2fs_io_info *fio); 3589 int f2fs_inplace_write_data(struct f2fs_io_info *fio); 3590 void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, 3591 block_t old_blkaddr, block_t new_blkaddr, 3592 bool recover_curseg, bool recover_newaddr, 3593 bool from_gc); 3594 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, 3595 block_t old_addr, block_t new_addr, 3596 unsigned char version, bool recover_curseg, 3597 bool recover_newaddr); 3598 void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, 3599 block_t old_blkaddr, block_t *new_blkaddr, 3600 struct f2fs_summary *sum, int type, 3601 struct f2fs_io_info *fio); 3602 void f2fs_update_device_state(struct f2fs_sb_info *sbi, nid_t ino, 3603 block_t blkaddr, unsigned int blkcnt); 3604 void f2fs_wait_on_page_writeback(struct page *page, 3605 enum page_type type, bool ordered, bool locked); 3606 void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr); 3607 void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr, 3608 block_t len); 3609 void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk); 3610 void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk); 3611 int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type, 3612 unsigned int val, int alloc); 3613 void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc); 3614 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi); 3615 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi); 3616 int f2fs_build_segment_manager(struct f2fs_sb_info *sbi); 3617 void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi); 3618 int __init f2fs_create_segment_manager_caches(void); 3619 void f2fs_destroy_segment_manager_caches(void); 3620 int f2fs_rw_hint_to_seg_type(enum rw_hint hint); 3621 enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi, 3622 enum page_type type, enum temp_type temp); 3623 unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi, 3624 unsigned int segno); 3625 unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi, 3626 unsigned int segno); 3627 3628 #define DEF_FRAGMENT_SIZE 4 3629 #define MIN_FRAGMENT_SIZE 1 3630 #define MAX_FRAGMENT_SIZE 512 3631 3632 static inline bool f2fs_need_rand_seg(struct f2fs_sb_info *sbi) 3633 { 3634 return F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG || 3635 F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK; 3636 } 3637 3638 /* 3639 * checkpoint.c 3640 */ 3641 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io); 3642 struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index); 3643 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index); 3644 struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index); 3645 struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index); 3646 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi, 3647 block_t blkaddr, int type); 3648 int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, 3649 int type, bool sync); 3650 void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index); 3651 long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, 3652 long nr_to_write, enum iostat_type io_type); 3653 void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type); 3654 void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type); 3655 void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all); 3656 bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode); 3657 void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, 3658 unsigned int devidx, int type); 3659 bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, 3660 unsigned int devidx, int type); 3661 int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi); 3662 int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi); 3663 void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi); 3664 void f2fs_add_orphan_inode(struct inode *inode); 3665 void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino); 3666 int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi); 3667 int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi); 3668 void f2fs_update_dirty_page(struct inode *inode, struct page *page); 3669 void f2fs_remove_dirty_inode(struct inode *inode); 3670 int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type); 3671 void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type); 3672 u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi); 3673 int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc); 3674 void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi); 3675 int __init f2fs_create_checkpoint_caches(void); 3676 void f2fs_destroy_checkpoint_caches(void); 3677 int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi); 3678 int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi); 3679 void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi); 3680 void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi); 3681 3682 /* 3683 * data.c 3684 */ 3685 int __init f2fs_init_bioset(void); 3686 void f2fs_destroy_bioset(void); 3687 int f2fs_init_bio_entry_cache(void); 3688 void f2fs_destroy_bio_entry_cache(void); 3689 void f2fs_submit_bio(struct f2fs_sb_info *sbi, 3690 struct bio *bio, enum page_type type); 3691 void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type); 3692 void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, 3693 struct inode *inode, struct page *page, 3694 nid_t ino, enum page_type type); 3695 void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi, 3696 struct bio **bio, struct page *page); 3697 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi); 3698 int f2fs_submit_page_bio(struct f2fs_io_info *fio); 3699 int f2fs_merge_page_bio(struct f2fs_io_info *fio); 3700 void f2fs_submit_page_write(struct f2fs_io_info *fio); 3701 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, 3702 block_t blk_addr, struct bio *bio); 3703 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr); 3704 void f2fs_set_data_blkaddr(struct dnode_of_data *dn); 3705 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr); 3706 int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count); 3707 int f2fs_reserve_new_block(struct dnode_of_data *dn); 3708 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index); 3709 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index); 3710 struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, 3711 int op_flags, bool for_write); 3712 struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index); 3713 struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, 3714 bool for_write); 3715 struct page *f2fs_get_new_data_page(struct inode *inode, 3716 struct page *ipage, pgoff_t index, bool new_i_size); 3717 int f2fs_do_write_data_page(struct f2fs_io_info *fio); 3718 void f2fs_do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock); 3719 int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, 3720 int create, int flag); 3721 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 3722 u64 start, u64 len); 3723 int f2fs_encrypt_one_page(struct f2fs_io_info *fio); 3724 bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio); 3725 bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio); 3726 int f2fs_write_single_data_page(struct page *page, int *submitted, 3727 struct bio **bio, sector_t *last_block, 3728 struct writeback_control *wbc, 3729 enum iostat_type io_type, 3730 int compr_blocks, bool allow_balance); 3731 void f2fs_write_failed(struct inode *inode, loff_t to); 3732 void f2fs_invalidate_page(struct page *page, unsigned int offset, 3733 unsigned int length); 3734 int f2fs_release_page(struct page *page, gfp_t wait); 3735 #ifdef CONFIG_MIGRATION 3736 int f2fs_migrate_page(struct address_space *mapping, struct page *newpage, 3737 struct page *page, enum migrate_mode mode); 3738 #endif 3739 bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len); 3740 void f2fs_clear_page_cache_dirty_tag(struct page *page); 3741 int f2fs_init_post_read_processing(void); 3742 void f2fs_destroy_post_read_processing(void); 3743 int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi); 3744 void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi); 3745 extern const struct iomap_ops f2fs_iomap_ops; 3746 3747 /* 3748 * gc.c 3749 */ 3750 int f2fs_start_gc_thread(struct f2fs_sb_info *sbi); 3751 void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi); 3752 block_t f2fs_start_bidx_of_node(unsigned int node_ofs, struct inode *inode); 3753 int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background, bool force, 3754 unsigned int segno); 3755 void f2fs_build_gc_manager(struct f2fs_sb_info *sbi); 3756 int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count); 3757 int __init f2fs_create_garbage_collection_cache(void); 3758 void f2fs_destroy_garbage_collection_cache(void); 3759 3760 /* 3761 * recovery.c 3762 */ 3763 int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only); 3764 bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi); 3765 int __init f2fs_create_recovery_cache(void); 3766 void f2fs_destroy_recovery_cache(void); 3767 3768 /* 3769 * debug.c 3770 */ 3771 #ifdef CONFIG_F2FS_STAT_FS 3772 struct f2fs_stat_info { 3773 struct list_head stat_list; 3774 struct f2fs_sb_info *sbi; 3775 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; 3776 int main_area_segs, main_area_sections, main_area_zones; 3777 unsigned long long hit_largest, hit_cached, hit_rbtree; 3778 unsigned long long hit_total, total_ext; 3779 int ext_tree, zombie_tree, ext_node; 3780 int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta; 3781 int ndirty_data, ndirty_qdata; 3782 int inmem_pages; 3783 unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all; 3784 int nats, dirty_nats, sits, dirty_sits; 3785 int free_nids, avail_nids, alloc_nids; 3786 int total_count, utilization; 3787 int bg_gc, nr_wb_cp_data, nr_wb_data; 3788 int nr_rd_data, nr_rd_node, nr_rd_meta; 3789 int nr_dio_read, nr_dio_write; 3790 unsigned int io_skip_bggc, other_skip_bggc; 3791 int nr_flushing, nr_flushed, flush_list_empty; 3792 int nr_discarding, nr_discarded; 3793 int nr_discard_cmd; 3794 unsigned int undiscard_blks; 3795 int nr_issued_ckpt, nr_total_ckpt, nr_queued_ckpt; 3796 unsigned int cur_ckpt_time, peak_ckpt_time; 3797 int inline_xattr, inline_inode, inline_dir, append, update, orphans; 3798 int compr_inode; 3799 unsigned long long compr_blocks; 3800 int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt; 3801 unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks; 3802 unsigned int bimodal, avg_vblocks; 3803 int util_free, util_valid, util_invalid; 3804 int rsvd_segs, overp_segs; 3805 int dirty_count, node_pages, meta_pages, compress_pages; 3806 int compress_page_hit; 3807 int prefree_count, call_count, cp_count, bg_cp_count; 3808 int tot_segs, node_segs, data_segs, free_segs, free_secs; 3809 int bg_node_segs, bg_data_segs; 3810 int tot_blks, data_blks, node_blks; 3811 int bg_data_blks, bg_node_blks; 3812 unsigned long long skipped_atomic_files[2]; 3813 int curseg[NR_CURSEG_TYPE]; 3814 int cursec[NR_CURSEG_TYPE]; 3815 int curzone[NR_CURSEG_TYPE]; 3816 unsigned int dirty_seg[NR_CURSEG_TYPE]; 3817 unsigned int full_seg[NR_CURSEG_TYPE]; 3818 unsigned int valid_blks[NR_CURSEG_TYPE]; 3819 3820 unsigned int meta_count[META_MAX]; 3821 unsigned int segment_count[2]; 3822 unsigned int block_count[2]; 3823 unsigned int inplace_count; 3824 unsigned long long base_mem, cache_mem, page_mem; 3825 }; 3826 3827 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) 3828 { 3829 return (struct f2fs_stat_info *)sbi->stat_info; 3830 } 3831 3832 #define stat_inc_cp_count(si) ((si)->cp_count++) 3833 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++) 3834 #define stat_inc_call_count(si) ((si)->call_count++) 3835 #define stat_inc_bggc_count(si) ((si)->bg_gc++) 3836 #define stat_io_skip_bggc_count(sbi) ((sbi)->io_skip_bggc++) 3837 #define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++) 3838 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++) 3839 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--) 3840 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext)) 3841 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree)) 3842 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest)) 3843 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached)) 3844 #define stat_inc_inline_xattr(inode) \ 3845 do { \ 3846 if (f2fs_has_inline_xattr(inode)) \ 3847 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \ 3848 } while (0) 3849 #define stat_dec_inline_xattr(inode) \ 3850 do { \ 3851 if (f2fs_has_inline_xattr(inode)) \ 3852 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \ 3853 } while (0) 3854 #define stat_inc_inline_inode(inode) \ 3855 do { \ 3856 if (f2fs_has_inline_data(inode)) \ 3857 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \ 3858 } while (0) 3859 #define stat_dec_inline_inode(inode) \ 3860 do { \ 3861 if (f2fs_has_inline_data(inode)) \ 3862 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \ 3863 } while (0) 3864 #define stat_inc_inline_dir(inode) \ 3865 do { \ 3866 if (f2fs_has_inline_dentry(inode)) \ 3867 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \ 3868 } while (0) 3869 #define stat_dec_inline_dir(inode) \ 3870 do { \ 3871 if (f2fs_has_inline_dentry(inode)) \ 3872 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \ 3873 } while (0) 3874 #define stat_inc_compr_inode(inode) \ 3875 do { \ 3876 if (f2fs_compressed_file(inode)) \ 3877 (atomic_inc(&F2FS_I_SB(inode)->compr_inode)); \ 3878 } while (0) 3879 #define stat_dec_compr_inode(inode) \ 3880 do { \ 3881 if (f2fs_compressed_file(inode)) \ 3882 (atomic_dec(&F2FS_I_SB(inode)->compr_inode)); \ 3883 } while (0) 3884 #define stat_add_compr_blocks(inode, blocks) \ 3885 (atomic64_add(blocks, &F2FS_I_SB(inode)->compr_blocks)) 3886 #define stat_sub_compr_blocks(inode, blocks) \ 3887 (atomic64_sub(blocks, &F2FS_I_SB(inode)->compr_blocks)) 3888 #define stat_inc_meta_count(sbi, blkaddr) \ 3889 do { \ 3890 if (blkaddr < SIT_I(sbi)->sit_base_addr) \ 3891 atomic_inc(&(sbi)->meta_count[META_CP]); \ 3892 else if (blkaddr < NM_I(sbi)->nat_blkaddr) \ 3893 atomic_inc(&(sbi)->meta_count[META_SIT]); \ 3894 else if (blkaddr < SM_I(sbi)->ssa_blkaddr) \ 3895 atomic_inc(&(sbi)->meta_count[META_NAT]); \ 3896 else if (blkaddr < SM_I(sbi)->main_blkaddr) \ 3897 atomic_inc(&(sbi)->meta_count[META_SSA]); \ 3898 } while (0) 3899 #define stat_inc_seg_type(sbi, curseg) \ 3900 ((sbi)->segment_count[(curseg)->alloc_type]++) 3901 #define stat_inc_block_count(sbi, curseg) \ 3902 ((sbi)->block_count[(curseg)->alloc_type]++) 3903 #define stat_inc_inplace_blocks(sbi) \ 3904 (atomic_inc(&(sbi)->inplace_count)) 3905 #define stat_update_max_atomic_write(inode) \ 3906 do { \ 3907 int cur = F2FS_I_SB(inode)->atomic_files; \ 3908 int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \ 3909 if (cur > max) \ 3910 atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \ 3911 } while (0) 3912 #define stat_inc_volatile_write(inode) \ 3913 (atomic_inc(&F2FS_I_SB(inode)->vw_cnt)) 3914 #define stat_dec_volatile_write(inode) \ 3915 (atomic_dec(&F2FS_I_SB(inode)->vw_cnt)) 3916 #define stat_update_max_volatile_write(inode) \ 3917 do { \ 3918 int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \ 3919 int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \ 3920 if (cur > max) \ 3921 atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \ 3922 } while (0) 3923 #define stat_inc_seg_count(sbi, type, gc_type) \ 3924 do { \ 3925 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 3926 si->tot_segs++; \ 3927 if ((type) == SUM_TYPE_DATA) { \ 3928 si->data_segs++; \ 3929 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \ 3930 } else { \ 3931 si->node_segs++; \ 3932 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \ 3933 } \ 3934 } while (0) 3935 3936 #define stat_inc_tot_blk_count(si, blks) \ 3937 ((si)->tot_blks += (blks)) 3938 3939 #define stat_inc_data_blk_count(sbi, blks, gc_type) \ 3940 do { \ 3941 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 3942 stat_inc_tot_blk_count(si, blks); \ 3943 si->data_blks += (blks); \ 3944 si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \ 3945 } while (0) 3946 3947 #define stat_inc_node_blk_count(sbi, blks, gc_type) \ 3948 do { \ 3949 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 3950 stat_inc_tot_blk_count(si, blks); \ 3951 si->node_blks += (blks); \ 3952 si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \ 3953 } while (0) 3954 3955 int f2fs_build_stats(struct f2fs_sb_info *sbi); 3956 void f2fs_destroy_stats(struct f2fs_sb_info *sbi); 3957 void __init f2fs_create_root_stats(void); 3958 void f2fs_destroy_root_stats(void); 3959 void f2fs_update_sit_info(struct f2fs_sb_info *sbi); 3960 #else 3961 #define stat_inc_cp_count(si) do { } while (0) 3962 #define stat_inc_bg_cp_count(si) do { } while (0) 3963 #define stat_inc_call_count(si) do { } while (0) 3964 #define stat_inc_bggc_count(si) do { } while (0) 3965 #define stat_io_skip_bggc_count(sbi) do { } while (0) 3966 #define stat_other_skip_bggc_count(sbi) do { } while (0) 3967 #define stat_inc_dirty_inode(sbi, type) do { } while (0) 3968 #define stat_dec_dirty_inode(sbi, type) do { } while (0) 3969 #define stat_inc_total_hit(sbi) do { } while (0) 3970 #define stat_inc_rbtree_node_hit(sbi) do { } while (0) 3971 #define stat_inc_largest_node_hit(sbi) do { } while (0) 3972 #define stat_inc_cached_node_hit(sbi) do { } while (0) 3973 #define stat_inc_inline_xattr(inode) do { } while (0) 3974 #define stat_dec_inline_xattr(inode) do { } while (0) 3975 #define stat_inc_inline_inode(inode) do { } while (0) 3976 #define stat_dec_inline_inode(inode) do { } while (0) 3977 #define stat_inc_inline_dir(inode) do { } while (0) 3978 #define stat_dec_inline_dir(inode) do { } while (0) 3979 #define stat_inc_compr_inode(inode) do { } while (0) 3980 #define stat_dec_compr_inode(inode) do { } while (0) 3981 #define stat_add_compr_blocks(inode, blocks) do { } while (0) 3982 #define stat_sub_compr_blocks(inode, blocks) do { } while (0) 3983 #define stat_update_max_atomic_write(inode) do { } while (0) 3984 #define stat_inc_volatile_write(inode) do { } while (0) 3985 #define stat_dec_volatile_write(inode) do { } while (0) 3986 #define stat_update_max_volatile_write(inode) do { } while (0) 3987 #define stat_inc_meta_count(sbi, blkaddr) do { } while (0) 3988 #define stat_inc_seg_type(sbi, curseg) do { } while (0) 3989 #define stat_inc_block_count(sbi, curseg) do { } while (0) 3990 #define stat_inc_inplace_blocks(sbi) do { } while (0) 3991 #define stat_inc_seg_count(sbi, type, gc_type) do { } while (0) 3992 #define stat_inc_tot_blk_count(si, blks) do { } while (0) 3993 #define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0) 3994 #define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0) 3995 3996 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } 3997 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } 3998 static inline void __init f2fs_create_root_stats(void) { } 3999 static inline void f2fs_destroy_root_stats(void) { } 4000 static inline void f2fs_update_sit_info(struct f2fs_sb_info *sbi) {} 4001 #endif 4002 4003 extern const struct file_operations f2fs_dir_operations; 4004 extern const struct file_operations f2fs_file_operations; 4005 extern const struct inode_operations f2fs_file_inode_operations; 4006 extern const struct address_space_operations f2fs_dblock_aops; 4007 extern const struct address_space_operations f2fs_node_aops; 4008 extern const struct address_space_operations f2fs_meta_aops; 4009 extern const struct inode_operations f2fs_dir_inode_operations; 4010 extern const struct inode_operations f2fs_symlink_inode_operations; 4011 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations; 4012 extern const struct inode_operations f2fs_special_inode_operations; 4013 extern struct kmem_cache *f2fs_inode_entry_slab; 4014 4015 /* 4016 * inline.c 4017 */ 4018 bool f2fs_may_inline_data(struct inode *inode); 4019 bool f2fs_may_inline_dentry(struct inode *inode); 4020 void f2fs_do_read_inline_data(struct page *page, struct page *ipage); 4021 void f2fs_truncate_inline_inode(struct inode *inode, 4022 struct page *ipage, u64 from); 4023 int f2fs_read_inline_data(struct inode *inode, struct page *page); 4024 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page); 4025 int f2fs_convert_inline_inode(struct inode *inode); 4026 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry); 4027 int f2fs_write_inline_data(struct inode *inode, struct page *page); 4028 int f2fs_recover_inline_data(struct inode *inode, struct page *npage); 4029 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir, 4030 const struct f2fs_filename *fname, 4031 struct page **res_page); 4032 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent, 4033 struct page *ipage); 4034 int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname, 4035 struct inode *inode, nid_t ino, umode_t mode); 4036 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, 4037 struct page *page, struct inode *dir, 4038 struct inode *inode); 4039 bool f2fs_empty_inline_dir(struct inode *dir); 4040 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, 4041 struct fscrypt_str *fstr); 4042 int f2fs_inline_data_fiemap(struct inode *inode, 4043 struct fiemap_extent_info *fieinfo, 4044 __u64 start, __u64 len); 4045 4046 /* 4047 * shrinker.c 4048 */ 4049 unsigned long f2fs_shrink_count(struct shrinker *shrink, 4050 struct shrink_control *sc); 4051 unsigned long f2fs_shrink_scan(struct shrinker *shrink, 4052 struct shrink_control *sc); 4053 void f2fs_join_shrinker(struct f2fs_sb_info *sbi); 4054 void f2fs_leave_shrinker(struct f2fs_sb_info *sbi); 4055 4056 /* 4057 * extent_cache.c 4058 */ 4059 struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root, 4060 struct rb_entry *cached_re, unsigned int ofs); 4061 struct rb_node **f2fs_lookup_rb_tree_ext(struct f2fs_sb_info *sbi, 4062 struct rb_root_cached *root, 4063 struct rb_node **parent, 4064 unsigned long long key, bool *left_most); 4065 struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi, 4066 struct rb_root_cached *root, 4067 struct rb_node **parent, 4068 unsigned int ofs, bool *leftmost); 4069 struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root, 4070 struct rb_entry *cached_re, unsigned int ofs, 4071 struct rb_entry **prev_entry, struct rb_entry **next_entry, 4072 struct rb_node ***insert_p, struct rb_node **insert_parent, 4073 bool force, bool *leftmost); 4074 bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi, 4075 struct rb_root_cached *root, bool check_key); 4076 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink); 4077 void f2fs_init_extent_tree(struct inode *inode, struct page *ipage); 4078 void f2fs_drop_extent_tree(struct inode *inode); 4079 unsigned int f2fs_destroy_extent_node(struct inode *inode); 4080 void f2fs_destroy_extent_tree(struct inode *inode); 4081 bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs, 4082 struct extent_info *ei); 4083 void f2fs_update_extent_cache(struct dnode_of_data *dn); 4084 void f2fs_update_extent_cache_range(struct dnode_of_data *dn, 4085 pgoff_t fofs, block_t blkaddr, unsigned int len); 4086 void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi); 4087 int __init f2fs_create_extent_cache(void); 4088 void f2fs_destroy_extent_cache(void); 4089 4090 /* 4091 * sysfs.c 4092 */ 4093 #define MIN_RA_MUL 2 4094 #define MAX_RA_MUL 256 4095 4096 int __init f2fs_init_sysfs(void); 4097 void f2fs_exit_sysfs(void); 4098 int f2fs_register_sysfs(struct f2fs_sb_info *sbi); 4099 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi); 4100 4101 /* verity.c */ 4102 extern const struct fsverity_operations f2fs_verityops; 4103 4104 /* 4105 * crypto support 4106 */ 4107 static inline bool f2fs_encrypted_file(struct inode *inode) 4108 { 4109 return IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode); 4110 } 4111 4112 static inline void f2fs_set_encrypted_inode(struct inode *inode) 4113 { 4114 #ifdef CONFIG_FS_ENCRYPTION 4115 file_set_encrypt(inode); 4116 f2fs_set_inode_flags(inode); 4117 #endif 4118 } 4119 4120 /* 4121 * Returns true if the reads of the inode's data need to undergo some 4122 * postprocessing step, like decryption or authenticity verification. 4123 */ 4124 static inline bool f2fs_post_read_required(struct inode *inode) 4125 { 4126 return f2fs_encrypted_file(inode) || fsverity_active(inode) || 4127 f2fs_compressed_file(inode); 4128 } 4129 4130 /* 4131 * compress.c 4132 */ 4133 #ifdef CONFIG_F2FS_FS_COMPRESSION 4134 bool f2fs_is_compressed_page(struct page *page); 4135 struct page *f2fs_compress_control_page(struct page *page); 4136 int f2fs_prepare_compress_overwrite(struct inode *inode, 4137 struct page **pagep, pgoff_t index, void **fsdata); 4138 bool f2fs_compress_write_end(struct inode *inode, void *fsdata, 4139 pgoff_t index, unsigned copied); 4140 int f2fs_truncate_partial_cluster(struct inode *inode, u64 from, bool lock); 4141 void f2fs_compress_write_end_io(struct bio *bio, struct page *page); 4142 bool f2fs_is_compress_backend_ready(struct inode *inode); 4143 int f2fs_init_compress_mempool(void); 4144 void f2fs_destroy_compress_mempool(void); 4145 void f2fs_decompress_cluster(struct decompress_io_ctx *dic); 4146 void f2fs_end_read_compressed_page(struct page *page, bool failed, 4147 block_t blkaddr); 4148 bool f2fs_cluster_is_empty(struct compress_ctx *cc); 4149 bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index); 4150 bool f2fs_all_cluster_page_loaded(struct compress_ctx *cc, struct pagevec *pvec, 4151 int index, int nr_pages); 4152 bool f2fs_sanity_check_cluster(struct dnode_of_data *dn); 4153 void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page); 4154 int f2fs_write_multi_pages(struct compress_ctx *cc, 4155 int *submitted, 4156 struct writeback_control *wbc, 4157 enum iostat_type io_type); 4158 int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index); 4159 void f2fs_update_extent_tree_range_compressed(struct inode *inode, 4160 pgoff_t fofs, block_t blkaddr, unsigned int llen, 4161 unsigned int c_len); 4162 int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, 4163 unsigned nr_pages, sector_t *last_block_in_bio, 4164 bool is_readahead, bool for_write); 4165 struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc); 4166 void f2fs_decompress_end_io(struct decompress_io_ctx *dic, bool failed); 4167 void f2fs_put_page_dic(struct page *page); 4168 unsigned int f2fs_cluster_blocks_are_contiguous(struct dnode_of_data *dn); 4169 int f2fs_init_compress_ctx(struct compress_ctx *cc); 4170 void f2fs_destroy_compress_ctx(struct compress_ctx *cc, bool reuse); 4171 void f2fs_init_compress_info(struct f2fs_sb_info *sbi); 4172 int f2fs_init_compress_inode(struct f2fs_sb_info *sbi); 4173 void f2fs_destroy_compress_inode(struct f2fs_sb_info *sbi); 4174 int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi); 4175 void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi); 4176 int __init f2fs_init_compress_cache(void); 4177 void f2fs_destroy_compress_cache(void); 4178 struct address_space *COMPRESS_MAPPING(struct f2fs_sb_info *sbi); 4179 void f2fs_invalidate_compress_page(struct f2fs_sb_info *sbi, block_t blkaddr); 4180 void f2fs_cache_compressed_page(struct f2fs_sb_info *sbi, struct page *page, 4181 nid_t ino, block_t blkaddr); 4182 bool f2fs_load_compressed_page(struct f2fs_sb_info *sbi, struct page *page, 4183 block_t blkaddr); 4184 void f2fs_invalidate_compress_pages(struct f2fs_sb_info *sbi, nid_t ino); 4185 #define inc_compr_inode_stat(inode) \ 4186 do { \ 4187 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); \ 4188 sbi->compr_new_inode++; \ 4189 } while (0) 4190 #define add_compr_block_stat(inode, blocks) \ 4191 do { \ 4192 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); \ 4193 int diff = F2FS_I(inode)->i_cluster_size - blocks; \ 4194 sbi->compr_written_block += blocks; \ 4195 sbi->compr_saved_block += diff; \ 4196 } while (0) 4197 #else 4198 static inline bool f2fs_is_compressed_page(struct page *page) { return false; } 4199 static inline bool f2fs_is_compress_backend_ready(struct inode *inode) 4200 { 4201 if (!f2fs_compressed_file(inode)) 4202 return true; 4203 /* not support compression */ 4204 return false; 4205 } 4206 static inline struct page *f2fs_compress_control_page(struct page *page) 4207 { 4208 WARN_ON_ONCE(1); 4209 return ERR_PTR(-EINVAL); 4210 } 4211 static inline int f2fs_init_compress_mempool(void) { return 0; } 4212 static inline void f2fs_destroy_compress_mempool(void) { } 4213 static inline void f2fs_decompress_cluster(struct decompress_io_ctx *dic) { } 4214 static inline void f2fs_end_read_compressed_page(struct page *page, 4215 bool failed, block_t blkaddr) 4216 { 4217 WARN_ON_ONCE(1); 4218 } 4219 static inline void f2fs_put_page_dic(struct page *page) 4220 { 4221 WARN_ON_ONCE(1); 4222 } 4223 static inline unsigned int f2fs_cluster_blocks_are_contiguous(struct dnode_of_data *dn) { return 0; } 4224 static inline bool f2fs_sanity_check_cluster(struct dnode_of_data *dn) { return false; } 4225 static inline int f2fs_init_compress_inode(struct f2fs_sb_info *sbi) { return 0; } 4226 static inline void f2fs_destroy_compress_inode(struct f2fs_sb_info *sbi) { } 4227 static inline int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi) { return 0; } 4228 static inline void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi) { } 4229 static inline int __init f2fs_init_compress_cache(void) { return 0; } 4230 static inline void f2fs_destroy_compress_cache(void) { } 4231 static inline void f2fs_invalidate_compress_page(struct f2fs_sb_info *sbi, 4232 block_t blkaddr) { } 4233 static inline void f2fs_cache_compressed_page(struct f2fs_sb_info *sbi, 4234 struct page *page, nid_t ino, block_t blkaddr) { } 4235 static inline bool f2fs_load_compressed_page(struct f2fs_sb_info *sbi, 4236 struct page *page, block_t blkaddr) { return false; } 4237 static inline void f2fs_invalidate_compress_pages(struct f2fs_sb_info *sbi, 4238 nid_t ino) { } 4239 #define inc_compr_inode_stat(inode) do { } while (0) 4240 static inline void f2fs_update_extent_tree_range_compressed(struct inode *inode, 4241 pgoff_t fofs, block_t blkaddr, unsigned int llen, 4242 unsigned int c_len) { } 4243 #endif 4244 4245 static inline void set_compress_context(struct inode *inode) 4246 { 4247 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 4248 4249 F2FS_I(inode)->i_compress_algorithm = 4250 F2FS_OPTION(sbi).compress_algorithm; 4251 F2FS_I(inode)->i_log_cluster_size = 4252 F2FS_OPTION(sbi).compress_log_size; 4253 F2FS_I(inode)->i_compress_flag = 4254 F2FS_OPTION(sbi).compress_chksum ? 4255 1 << COMPRESS_CHKSUM : 0; 4256 F2FS_I(inode)->i_cluster_size = 4257 1 << F2FS_I(inode)->i_log_cluster_size; 4258 if ((F2FS_I(inode)->i_compress_algorithm == COMPRESS_LZ4 || 4259 F2FS_I(inode)->i_compress_algorithm == COMPRESS_ZSTD) && 4260 F2FS_OPTION(sbi).compress_level) 4261 F2FS_I(inode)->i_compress_flag |= 4262 F2FS_OPTION(sbi).compress_level << 4263 COMPRESS_LEVEL_OFFSET; 4264 F2FS_I(inode)->i_flags |= F2FS_COMPR_FL; 4265 set_inode_flag(inode, FI_COMPRESSED_FILE); 4266 stat_inc_compr_inode(inode); 4267 inc_compr_inode_stat(inode); 4268 f2fs_mark_inode_dirty_sync(inode, true); 4269 } 4270 4271 static inline bool f2fs_disable_compressed_file(struct inode *inode) 4272 { 4273 struct f2fs_inode_info *fi = F2FS_I(inode); 4274 4275 if (!f2fs_compressed_file(inode)) 4276 return true; 4277 if (S_ISREG(inode->i_mode) && F2FS_HAS_BLOCKS(inode)) 4278 return false; 4279 4280 fi->i_flags &= ~F2FS_COMPR_FL; 4281 stat_dec_compr_inode(inode); 4282 clear_inode_flag(inode, FI_COMPRESSED_FILE); 4283 f2fs_mark_inode_dirty_sync(inode, true); 4284 return true; 4285 } 4286 4287 #define F2FS_FEATURE_FUNCS(name, flagname) \ 4288 static inline int f2fs_sb_has_##name(struct f2fs_sb_info *sbi) \ 4289 { \ 4290 return F2FS_HAS_FEATURE(sbi, F2FS_FEATURE_##flagname); \ 4291 } 4292 4293 F2FS_FEATURE_FUNCS(encrypt, ENCRYPT); 4294 F2FS_FEATURE_FUNCS(blkzoned, BLKZONED); 4295 F2FS_FEATURE_FUNCS(extra_attr, EXTRA_ATTR); 4296 F2FS_FEATURE_FUNCS(project_quota, PRJQUOTA); 4297 F2FS_FEATURE_FUNCS(inode_chksum, INODE_CHKSUM); 4298 F2FS_FEATURE_FUNCS(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR); 4299 F2FS_FEATURE_FUNCS(quota_ino, QUOTA_INO); 4300 F2FS_FEATURE_FUNCS(inode_crtime, INODE_CRTIME); 4301 F2FS_FEATURE_FUNCS(lost_found, LOST_FOUND); 4302 F2FS_FEATURE_FUNCS(verity, VERITY); 4303 F2FS_FEATURE_FUNCS(sb_chksum, SB_CHKSUM); 4304 F2FS_FEATURE_FUNCS(casefold, CASEFOLD); 4305 F2FS_FEATURE_FUNCS(compression, COMPRESSION); 4306 F2FS_FEATURE_FUNCS(readonly, RO); 4307 4308 static inline bool f2fs_may_extent_tree(struct inode *inode) 4309 { 4310 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 4311 4312 if (!test_opt(sbi, EXTENT_CACHE) || 4313 is_inode_flag_set(inode, FI_NO_EXTENT) || 4314 (is_inode_flag_set(inode, FI_COMPRESSED_FILE) && 4315 !f2fs_sb_has_readonly(sbi))) 4316 return false; 4317 4318 /* 4319 * for recovered files during mount do not create extents 4320 * if shrinker is not registered. 4321 */ 4322 if (list_empty(&sbi->s_list)) 4323 return false; 4324 4325 return S_ISREG(inode->i_mode); 4326 } 4327 4328 #ifdef CONFIG_BLK_DEV_ZONED 4329 static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi, 4330 block_t blkaddr) 4331 { 4332 unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz; 4333 4334 return test_bit(zno, FDEV(devi).blkz_seq); 4335 } 4336 #endif 4337 4338 static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi) 4339 { 4340 return f2fs_sb_has_blkzoned(sbi); 4341 } 4342 4343 static inline bool f2fs_bdev_support_discard(struct block_device *bdev) 4344 { 4345 return blk_queue_discard(bdev_get_queue(bdev)) || 4346 bdev_is_zoned(bdev); 4347 } 4348 4349 static inline bool f2fs_hw_support_discard(struct f2fs_sb_info *sbi) 4350 { 4351 int i; 4352 4353 if (!f2fs_is_multi_device(sbi)) 4354 return f2fs_bdev_support_discard(sbi->sb->s_bdev); 4355 4356 for (i = 0; i < sbi->s_ndevs; i++) 4357 if (f2fs_bdev_support_discard(FDEV(i).bdev)) 4358 return true; 4359 return false; 4360 } 4361 4362 static inline bool f2fs_realtime_discard_enable(struct f2fs_sb_info *sbi) 4363 { 4364 return (test_opt(sbi, DISCARD) && f2fs_hw_support_discard(sbi)) || 4365 f2fs_hw_should_discard(sbi); 4366 } 4367 4368 static inline bool f2fs_hw_is_readonly(struct f2fs_sb_info *sbi) 4369 { 4370 int i; 4371 4372 if (!f2fs_is_multi_device(sbi)) 4373 return bdev_read_only(sbi->sb->s_bdev); 4374 4375 for (i = 0; i < sbi->s_ndevs; i++) 4376 if (bdev_read_only(FDEV(i).bdev)) 4377 return true; 4378 return false; 4379 } 4380 4381 static inline bool f2fs_lfs_mode(struct f2fs_sb_info *sbi) 4382 { 4383 return F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS; 4384 } 4385 4386 static inline bool f2fs_may_compress(struct inode *inode) 4387 { 4388 if (IS_SWAPFILE(inode) || f2fs_is_pinned_file(inode) || 4389 f2fs_is_atomic_file(inode) || 4390 f2fs_is_volatile_file(inode)) 4391 return false; 4392 return S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode); 4393 } 4394 4395 static inline void f2fs_i_compr_blocks_update(struct inode *inode, 4396 u64 blocks, bool add) 4397 { 4398 int diff = F2FS_I(inode)->i_cluster_size - blocks; 4399 struct f2fs_inode_info *fi = F2FS_I(inode); 4400 4401 /* don't update i_compr_blocks if saved blocks were released */ 4402 if (!add && !atomic_read(&fi->i_compr_blocks)) 4403 return; 4404 4405 if (add) { 4406 atomic_add(diff, &fi->i_compr_blocks); 4407 stat_add_compr_blocks(inode, diff); 4408 } else { 4409 atomic_sub(diff, &fi->i_compr_blocks); 4410 stat_sub_compr_blocks(inode, diff); 4411 } 4412 f2fs_mark_inode_dirty_sync(inode, true); 4413 } 4414 4415 static inline int block_unaligned_IO(struct inode *inode, 4416 struct kiocb *iocb, struct iov_iter *iter) 4417 { 4418 unsigned int i_blkbits = READ_ONCE(inode->i_blkbits); 4419 unsigned int blocksize_mask = (1 << i_blkbits) - 1; 4420 loff_t offset = iocb->ki_pos; 4421 unsigned long align = offset | iov_iter_alignment(iter); 4422 4423 return align & blocksize_mask; 4424 } 4425 4426 static inline bool f2fs_allow_multi_device_dio(struct f2fs_sb_info *sbi, 4427 int flag) 4428 { 4429 if (!f2fs_is_multi_device(sbi)) 4430 return false; 4431 if (flag != F2FS_GET_BLOCK_DIO) 4432 return false; 4433 return sbi->aligned_blksize; 4434 } 4435 4436 static inline bool f2fs_force_buffered_io(struct inode *inode, 4437 struct kiocb *iocb, struct iov_iter *iter) 4438 { 4439 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 4440 int rw = iov_iter_rw(iter); 4441 4442 if (f2fs_post_read_required(inode)) 4443 return true; 4444 4445 /* disallow direct IO if any of devices has unaligned blksize */ 4446 if (f2fs_is_multi_device(sbi) && !sbi->aligned_blksize) 4447 return true; 4448 /* 4449 * for blkzoned device, fallback direct IO to buffered IO, so 4450 * all IOs can be serialized by log-structured write. 4451 */ 4452 if (f2fs_sb_has_blkzoned(sbi)) 4453 return true; 4454 if (f2fs_lfs_mode(sbi) && (rw == WRITE)) { 4455 if (block_unaligned_IO(inode, iocb, iter)) 4456 return true; 4457 if (F2FS_IO_ALIGNED(sbi)) 4458 return true; 4459 } 4460 if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED)) 4461 return true; 4462 4463 return false; 4464 } 4465 4466 static inline bool f2fs_need_verity(const struct inode *inode, pgoff_t idx) 4467 { 4468 return fsverity_active(inode) && 4469 idx < DIV_ROUND_UP(inode->i_size, PAGE_SIZE); 4470 } 4471 4472 #ifdef CONFIG_F2FS_FAULT_INJECTION 4473 extern void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, 4474 unsigned int type); 4475 #else 4476 #define f2fs_build_fault_attr(sbi, rate, type) do { } while (0) 4477 #endif 4478 4479 static inline bool is_journalled_quota(struct f2fs_sb_info *sbi) 4480 { 4481 #ifdef CONFIG_QUOTA 4482 if (f2fs_sb_has_quota_ino(sbi)) 4483 return true; 4484 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 4485 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 4486 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 4487 return true; 4488 #endif 4489 return false; 4490 } 4491 4492 static inline bool f2fs_block_unit_discard(struct f2fs_sb_info *sbi) 4493 { 4494 return F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK; 4495 } 4496 4497 #define EFSBADCRC EBADMSG /* Bad CRC detected */ 4498 #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ 4499 4500 #endif /* _LINUX_F2FS_H */ 4501