1 /* 2 * fs/f2fs/f2fs.h 3 * 4 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 5 * http://www.samsung.com/ 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 #ifndef _LINUX_F2FS_H 12 #define _LINUX_F2FS_H 13 14 #include <linux/types.h> 15 #include <linux/page-flags.h> 16 #include <linux/buffer_head.h> 17 #include <linux/slab.h> 18 #include <linux/crc32.h> 19 #include <linux/magic.h> 20 #include <linux/kobject.h> 21 #include <linux/sched.h> 22 23 #ifdef CONFIG_F2FS_CHECK_FS 24 #define f2fs_bug_on(condition) BUG_ON(condition) 25 #define f2fs_down_write(x, y) down_write_nest_lock(x, y) 26 #else 27 #define f2fs_bug_on(condition) 28 #define f2fs_down_write(x, y) down_write(x) 29 #endif 30 31 /* 32 * For mount options 33 */ 34 #define F2FS_MOUNT_BG_GC 0x00000001 35 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 36 #define F2FS_MOUNT_DISCARD 0x00000004 37 #define F2FS_MOUNT_NOHEAP 0x00000008 38 #define F2FS_MOUNT_XATTR_USER 0x00000010 39 #define F2FS_MOUNT_POSIX_ACL 0x00000020 40 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 41 #define F2FS_MOUNT_INLINE_XATTR 0x00000080 42 #define F2FS_MOUNT_INLINE_DATA 0x00000100 43 44 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) 45 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) 46 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) 47 48 #define ver_after(a, b) (typecheck(unsigned long long, a) && \ 49 typecheck(unsigned long long, b) && \ 50 ((long long)((a) - (b)) > 0)) 51 52 typedef u32 block_t; /* 53 * should not change u32, since it is the on-disk block 54 * address format, __le32. 55 */ 56 typedef u32 nid_t; 57 58 struct f2fs_mount_info { 59 unsigned int opt; 60 }; 61 62 #define CRCPOLY_LE 0xedb88320 63 64 static inline __u32 f2fs_crc32(void *buf, size_t len) 65 { 66 unsigned char *p = (unsigned char *)buf; 67 __u32 crc = F2FS_SUPER_MAGIC; 68 int i; 69 70 while (len--) { 71 crc ^= *p++; 72 for (i = 0; i < 8; i++) 73 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); 74 } 75 return crc; 76 } 77 78 static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) 79 { 80 return f2fs_crc32(buf, buf_size) == blk_crc; 81 } 82 83 /* 84 * For checkpoint manager 85 */ 86 enum { 87 NAT_BITMAP, 88 SIT_BITMAP 89 }; 90 91 /* for the list of orphan inodes */ 92 struct orphan_inode_entry { 93 struct list_head list; /* list head */ 94 nid_t ino; /* inode number */ 95 }; 96 97 /* for the list of directory inodes */ 98 struct dir_inode_entry { 99 struct list_head list; /* list head */ 100 struct inode *inode; /* vfs inode pointer */ 101 }; 102 103 /* for the list of blockaddresses to be discarded */ 104 struct discard_entry { 105 struct list_head list; /* list head */ 106 block_t blkaddr; /* block address to be discarded */ 107 int len; /* # of consecutive blocks of the discard */ 108 }; 109 110 /* for the list of fsync inodes, used only during recovery */ 111 struct fsync_inode_entry { 112 struct list_head list; /* list head */ 113 struct inode *inode; /* vfs inode pointer */ 114 block_t blkaddr; /* block address locating the last inode */ 115 }; 116 117 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) 118 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) 119 120 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) 121 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) 122 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) 123 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) 124 125 static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) 126 { 127 int before = nats_in_cursum(rs); 128 rs->n_nats = cpu_to_le16(before + i); 129 return before; 130 } 131 132 static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) 133 { 134 int before = sits_in_cursum(rs); 135 rs->n_sits = cpu_to_le16(before + i); 136 return before; 137 } 138 139 /* 140 * ioctl commands 141 */ 142 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS 143 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS 144 145 #if defined(__KERNEL__) && defined(CONFIG_COMPAT) 146 /* 147 * ioctl commands in 32 bit emulation 148 */ 149 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS 150 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS 151 #endif 152 153 /* 154 * For INODE and NODE manager 155 */ 156 /* 157 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 158 * as its node offset to distinguish from index node blocks. 159 * But some bits are used to mark the node block. 160 */ 161 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ 162 >> OFFSET_BIT_SHIFT) 163 enum { 164 ALLOC_NODE, /* allocate a new node page if needed */ 165 LOOKUP_NODE, /* look up a node without readahead */ 166 LOOKUP_NODE_RA, /* 167 * look up a node with readahead called 168 * by get_data_block. 169 */ 170 }; 171 172 #define F2FS_LINK_MAX 32000 /* maximum link count per file */ 173 174 /* for in-memory extent cache entry */ 175 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ 176 177 struct extent_info { 178 rwlock_t ext_lock; /* rwlock for consistency */ 179 unsigned int fofs; /* start offset in a file */ 180 u32 blk_addr; /* start block address of the extent */ 181 unsigned int len; /* length of the extent */ 182 }; 183 184 /* 185 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. 186 */ 187 #define FADVISE_COLD_BIT 0x01 188 #define FADVISE_LOST_PINO_BIT 0x02 189 190 struct f2fs_inode_info { 191 struct inode vfs_inode; /* serve a vfs inode */ 192 unsigned long i_flags; /* keep an inode flags for ioctl */ 193 unsigned char i_advise; /* use to give file attribute hints */ 194 unsigned int i_current_depth; /* use only in directory structure */ 195 unsigned int i_pino; /* parent inode number */ 196 umode_t i_acl_mode; /* keep file acl mode temporarily */ 197 198 /* Use below internally in f2fs*/ 199 unsigned long flags; /* use to pass per-file flags */ 200 atomic_t dirty_dents; /* # of dirty dentry pages */ 201 f2fs_hash_t chash; /* hash value of given file name */ 202 unsigned int clevel; /* maximum level of given file name */ 203 nid_t i_xattr_nid; /* node id that contains xattrs */ 204 unsigned long long xattr_ver; /* cp version of xattr modification */ 205 struct extent_info ext; /* in-memory extent cache entry */ 206 }; 207 208 static inline void get_extent_info(struct extent_info *ext, 209 struct f2fs_extent i_ext) 210 { 211 write_lock(&ext->ext_lock); 212 ext->fofs = le32_to_cpu(i_ext.fofs); 213 ext->blk_addr = le32_to_cpu(i_ext.blk_addr); 214 ext->len = le32_to_cpu(i_ext.len); 215 write_unlock(&ext->ext_lock); 216 } 217 218 static inline void set_raw_extent(struct extent_info *ext, 219 struct f2fs_extent *i_ext) 220 { 221 read_lock(&ext->ext_lock); 222 i_ext->fofs = cpu_to_le32(ext->fofs); 223 i_ext->blk_addr = cpu_to_le32(ext->blk_addr); 224 i_ext->len = cpu_to_le32(ext->len); 225 read_unlock(&ext->ext_lock); 226 } 227 228 struct f2fs_nm_info { 229 block_t nat_blkaddr; /* base disk address of NAT */ 230 nid_t max_nid; /* maximum possible node ids */ 231 nid_t next_scan_nid; /* the next nid to be scanned */ 232 233 /* NAT cache management */ 234 struct radix_tree_root nat_root;/* root of the nat entry cache */ 235 rwlock_t nat_tree_lock; /* protect nat_tree_lock */ 236 unsigned int nat_cnt; /* the # of cached nat entries */ 237 struct list_head nat_entries; /* cached nat entry list (clean) */ 238 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ 239 240 /* free node ids management */ 241 struct list_head free_nid_list; /* a list for free nids */ 242 spinlock_t free_nid_list_lock; /* protect free nid list */ 243 unsigned int fcnt; /* the number of free node id */ 244 struct mutex build_lock; /* lock for build free nids */ 245 246 /* for checkpoint */ 247 char *nat_bitmap; /* NAT bitmap pointer */ 248 int bitmap_size; /* bitmap size */ 249 }; 250 251 /* 252 * this structure is used as one of function parameters. 253 * all the information are dedicated to a given direct node block determined 254 * by the data offset in a file. 255 */ 256 struct dnode_of_data { 257 struct inode *inode; /* vfs inode pointer */ 258 struct page *inode_page; /* its inode page, NULL is possible */ 259 struct page *node_page; /* cached direct node page */ 260 nid_t nid; /* node id of the direct node block */ 261 unsigned int ofs_in_node; /* data offset in the node page */ 262 bool inode_page_locked; /* inode page is locked or not */ 263 block_t data_blkaddr; /* block address of the node block */ 264 }; 265 266 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, 267 struct page *ipage, struct page *npage, nid_t nid) 268 { 269 memset(dn, 0, sizeof(*dn)); 270 dn->inode = inode; 271 dn->inode_page = ipage; 272 dn->node_page = npage; 273 dn->nid = nid; 274 } 275 276 /* 277 * For SIT manager 278 * 279 * By default, there are 6 active log areas across the whole main area. 280 * When considering hot and cold data separation to reduce cleaning overhead, 281 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, 282 * respectively. 283 * In the current design, you should not change the numbers intentionally. 284 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 285 * logs individually according to the underlying devices. (default: 6) 286 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for 287 * data and 8 for node logs. 288 */ 289 #define NR_CURSEG_DATA_TYPE (3) 290 #define NR_CURSEG_NODE_TYPE (3) 291 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) 292 293 enum { 294 CURSEG_HOT_DATA = 0, /* directory entry blocks */ 295 CURSEG_WARM_DATA, /* data blocks */ 296 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ 297 CURSEG_HOT_NODE, /* direct node blocks of directory files */ 298 CURSEG_WARM_NODE, /* direct node blocks of normal files */ 299 CURSEG_COLD_NODE, /* indirect node blocks */ 300 NO_CHECK_TYPE 301 }; 302 303 struct f2fs_sm_info { 304 struct sit_info *sit_info; /* whole segment information */ 305 struct free_segmap_info *free_info; /* free segment information */ 306 struct dirty_seglist_info *dirty_info; /* dirty segment information */ 307 struct curseg_info *curseg_array; /* active segment information */ 308 309 struct list_head wblist_head; /* list of under-writeback pages */ 310 spinlock_t wblist_lock; /* lock for checkpoint */ 311 312 block_t seg0_blkaddr; /* block address of 0'th segment */ 313 block_t main_blkaddr; /* start block address of main area */ 314 block_t ssa_blkaddr; /* start block address of SSA area */ 315 316 unsigned int segment_count; /* total # of segments */ 317 unsigned int main_segments; /* # of segments in main area */ 318 unsigned int reserved_segments; /* # of reserved segments */ 319 unsigned int ovp_segments; /* # of overprovision segments */ 320 321 /* a threshold to reclaim prefree segments */ 322 unsigned int rec_prefree_segments; 323 324 /* for small discard management */ 325 struct list_head discard_list; /* 4KB discard list */ 326 int nr_discards; /* # of discards in the list */ 327 int max_discards; /* max. discards to be issued */ 328 329 unsigned int ipu_policy; /* in-place-update policy */ 330 unsigned int min_ipu_util; /* in-place-update threshold */ 331 }; 332 333 /* 334 * For superblock 335 */ 336 /* 337 * COUNT_TYPE for monitoring 338 * 339 * f2fs monitors the number of several block types such as on-writeback, 340 * dirty dentry blocks, dirty node blocks, and dirty meta blocks. 341 */ 342 enum count_type { 343 F2FS_WRITEBACK, 344 F2FS_DIRTY_DENTS, 345 F2FS_DIRTY_NODES, 346 F2FS_DIRTY_META, 347 NR_COUNT_TYPE, 348 }; 349 350 /* 351 * The below are the page types of bios used in submti_bio(). 352 * The available types are: 353 * DATA User data pages. It operates as async mode. 354 * NODE Node pages. It operates as async mode. 355 * META FS metadata pages such as SIT, NAT, CP. 356 * NR_PAGE_TYPE The number of page types. 357 * META_FLUSH Make sure the previous pages are written 358 * with waiting the bio's completion 359 * ... Only can be used with META. 360 */ 361 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) 362 enum page_type { 363 DATA, 364 NODE, 365 META, 366 NR_PAGE_TYPE, 367 META_FLUSH, 368 }; 369 370 struct f2fs_io_info { 371 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ 372 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */ 373 }; 374 375 #define is_read_io(rw) (((rw) & 1) == READ) 376 struct f2fs_bio_info { 377 struct f2fs_sb_info *sbi; /* f2fs superblock */ 378 struct bio *bio; /* bios to merge */ 379 sector_t last_block_in_bio; /* last block number */ 380 struct f2fs_io_info fio; /* store buffered io info. */ 381 struct mutex io_mutex; /* mutex for bio */ 382 }; 383 384 struct f2fs_sb_info { 385 struct super_block *sb; /* pointer to VFS super block */ 386 struct proc_dir_entry *s_proc; /* proc entry */ 387 struct buffer_head *raw_super_buf; /* buffer head of raw sb */ 388 struct f2fs_super_block *raw_super; /* raw super block pointer */ 389 int s_dirty; /* dirty flag for checkpoint */ 390 391 /* for node-related operations */ 392 struct f2fs_nm_info *nm_info; /* node manager */ 393 struct inode *node_inode; /* cache node blocks */ 394 395 /* for segment-related operations */ 396 struct f2fs_sm_info *sm_info; /* segment manager */ 397 398 /* for bio operations */ 399 struct f2fs_bio_info read_io; /* for read bios */ 400 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ 401 402 /* for checkpoint */ 403 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ 404 struct inode *meta_inode; /* cache meta blocks */ 405 struct mutex cp_mutex; /* checkpoint procedure lock */ 406 struct rw_semaphore cp_rwsem; /* blocking FS operations */ 407 struct mutex node_write; /* locking node writes */ 408 struct mutex writepages; /* mutex for writepages() */ 409 bool por_doing; /* recovery is doing or not */ 410 bool on_build_free_nids; /* build_free_nids is doing */ 411 wait_queue_head_t cp_wait; 412 413 /* for orphan inode management */ 414 struct list_head orphan_inode_list; /* orphan inode list */ 415 struct mutex orphan_inode_mutex; /* for orphan inode list */ 416 unsigned int n_orphans; /* # of orphan inodes */ 417 unsigned int max_orphans; /* max orphan inodes */ 418 419 /* for directory inode management */ 420 struct list_head dir_inode_list; /* dir inode list */ 421 spinlock_t dir_inode_lock; /* for dir inode list lock */ 422 423 /* basic file system units */ 424 unsigned int log_sectors_per_block; /* log2 sectors per block */ 425 unsigned int log_blocksize; /* log2 block size */ 426 unsigned int blocksize; /* block size */ 427 unsigned int root_ino_num; /* root inode number*/ 428 unsigned int node_ino_num; /* node inode number*/ 429 unsigned int meta_ino_num; /* meta inode number*/ 430 unsigned int log_blocks_per_seg; /* log2 blocks per segment */ 431 unsigned int blocks_per_seg; /* blocks per segment */ 432 unsigned int segs_per_sec; /* segments per section */ 433 unsigned int secs_per_zone; /* sections per zone */ 434 unsigned int total_sections; /* total section count */ 435 unsigned int total_node_count; /* total node block count */ 436 unsigned int total_valid_node_count; /* valid node block count */ 437 unsigned int total_valid_inode_count; /* valid inode count */ 438 int active_logs; /* # of active logs */ 439 440 block_t user_block_count; /* # of user blocks */ 441 block_t total_valid_block_count; /* # of valid blocks */ 442 block_t alloc_valid_block_count; /* # of allocated blocks */ 443 block_t last_valid_block_count; /* for recovery */ 444 u32 s_next_generation; /* for NFS support */ 445 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ 446 447 struct f2fs_mount_info mount_opt; /* mount options */ 448 449 /* for cleaning operations */ 450 struct mutex gc_mutex; /* mutex for GC */ 451 struct f2fs_gc_kthread *gc_thread; /* GC thread */ 452 unsigned int cur_victim_sec; /* current victim section num */ 453 454 /* 455 * for stat information. 456 * one is for the LFS mode, and the other is for the SSR mode. 457 */ 458 #ifdef CONFIG_F2FS_STAT_FS 459 struct f2fs_stat_info *stat_info; /* FS status information */ 460 unsigned int segment_count[2]; /* # of allocated segments */ 461 unsigned int block_count[2]; /* # of allocated blocks */ 462 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ 463 int inline_inode; /* # of inline_data inodes */ 464 int bg_gc; /* background gc calls */ 465 unsigned int n_dirty_dirs; /* # of dir inodes */ 466 #endif 467 unsigned int last_victim[2]; /* last victim segment # */ 468 spinlock_t stat_lock; /* lock for stat operations */ 469 470 /* For sysfs suppport */ 471 struct kobject s_kobj; 472 struct completion s_kobj_unregister; 473 }; 474 475 /* 476 * Inline functions 477 */ 478 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) 479 { 480 return container_of(inode, struct f2fs_inode_info, vfs_inode); 481 } 482 483 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) 484 { 485 return sb->s_fs_info; 486 } 487 488 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) 489 { 490 return (struct f2fs_super_block *)(sbi->raw_super); 491 } 492 493 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) 494 { 495 return (struct f2fs_checkpoint *)(sbi->ckpt); 496 } 497 498 static inline struct f2fs_node *F2FS_NODE(struct page *page) 499 { 500 return (struct f2fs_node *)page_address(page); 501 } 502 503 static inline struct f2fs_inode *F2FS_INODE(struct page *page) 504 { 505 return &((struct f2fs_node *)page_address(page))->i; 506 } 507 508 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) 509 { 510 return (struct f2fs_nm_info *)(sbi->nm_info); 511 } 512 513 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) 514 { 515 return (struct f2fs_sm_info *)(sbi->sm_info); 516 } 517 518 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) 519 { 520 return (struct sit_info *)(SM_I(sbi)->sit_info); 521 } 522 523 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) 524 { 525 return (struct free_segmap_info *)(SM_I(sbi)->free_info); 526 } 527 528 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) 529 { 530 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); 531 } 532 533 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) 534 { 535 sbi->s_dirty = 1; 536 } 537 538 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) 539 { 540 sbi->s_dirty = 0; 541 } 542 543 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) 544 { 545 return le64_to_cpu(cp->checkpoint_ver); 546 } 547 548 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 549 { 550 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 551 return ckpt_flags & f; 552 } 553 554 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 555 { 556 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 557 ckpt_flags |= f; 558 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 559 } 560 561 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 562 { 563 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 564 ckpt_flags &= (~f); 565 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 566 } 567 568 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) 569 { 570 down_read(&sbi->cp_rwsem); 571 } 572 573 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) 574 { 575 up_read(&sbi->cp_rwsem); 576 } 577 578 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) 579 { 580 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); 581 } 582 583 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) 584 { 585 up_write(&sbi->cp_rwsem); 586 } 587 588 /* 589 * Check whether the given nid is within node id range. 590 */ 591 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 592 { 593 WARN_ON((nid >= NM_I(sbi)->max_nid)); 594 if (unlikely(nid >= NM_I(sbi)->max_nid)) 595 return -EINVAL; 596 return 0; 597 } 598 599 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 600 601 /* 602 * Check whether the inode has blocks or not 603 */ 604 static inline int F2FS_HAS_BLOCKS(struct inode *inode) 605 { 606 if (F2FS_I(inode)->i_xattr_nid) 607 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); 608 else 609 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); 610 } 611 612 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, 613 struct inode *inode, blkcnt_t count) 614 { 615 block_t valid_block_count; 616 617 spin_lock(&sbi->stat_lock); 618 valid_block_count = 619 sbi->total_valid_block_count + (block_t)count; 620 if (unlikely(valid_block_count > sbi->user_block_count)) { 621 spin_unlock(&sbi->stat_lock); 622 return false; 623 } 624 inode->i_blocks += count; 625 sbi->total_valid_block_count = valid_block_count; 626 sbi->alloc_valid_block_count += (block_t)count; 627 spin_unlock(&sbi->stat_lock); 628 return true; 629 } 630 631 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, 632 struct inode *inode, 633 blkcnt_t count) 634 { 635 spin_lock(&sbi->stat_lock); 636 f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); 637 f2fs_bug_on(inode->i_blocks < count); 638 inode->i_blocks -= count; 639 sbi->total_valid_block_count -= (block_t)count; 640 spin_unlock(&sbi->stat_lock); 641 } 642 643 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) 644 { 645 atomic_inc(&sbi->nr_pages[count_type]); 646 F2FS_SET_SB_DIRT(sbi); 647 } 648 649 static inline void inode_inc_dirty_dents(struct inode *inode) 650 { 651 atomic_inc(&F2FS_I(inode)->dirty_dents); 652 } 653 654 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) 655 { 656 atomic_dec(&sbi->nr_pages[count_type]); 657 } 658 659 static inline void inode_dec_dirty_dents(struct inode *inode) 660 { 661 atomic_dec(&F2FS_I(inode)->dirty_dents); 662 } 663 664 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) 665 { 666 return atomic_read(&sbi->nr_pages[count_type]); 667 } 668 669 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) 670 { 671 unsigned int pages_per_sec = sbi->segs_per_sec * 672 (1 << sbi->log_blocks_per_seg); 673 return ((get_pages(sbi, block_type) + pages_per_sec - 1) 674 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; 675 } 676 677 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) 678 { 679 block_t ret; 680 spin_lock(&sbi->stat_lock); 681 ret = sbi->total_valid_block_count; 682 spin_unlock(&sbi->stat_lock); 683 return ret; 684 } 685 686 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) 687 { 688 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 689 690 /* return NAT or SIT bitmap */ 691 if (flag == NAT_BITMAP) 692 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 693 else if (flag == SIT_BITMAP) 694 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 695 696 return 0; 697 } 698 699 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) 700 { 701 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 702 int offset = (flag == NAT_BITMAP) ? 703 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; 704 return &ckpt->sit_nat_version_bitmap + offset; 705 } 706 707 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) 708 { 709 block_t start_addr; 710 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 711 unsigned long long ckpt_version = cur_cp_version(ckpt); 712 713 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); 714 715 /* 716 * odd numbered checkpoint should at cp segment 0 717 * and even segent must be at cp segment 1 718 */ 719 if (!(ckpt_version & 1)) 720 start_addr += sbi->blocks_per_seg; 721 722 return start_addr; 723 } 724 725 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) 726 { 727 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); 728 } 729 730 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, 731 struct inode *inode) 732 { 733 block_t valid_block_count; 734 unsigned int valid_node_count; 735 736 spin_lock(&sbi->stat_lock); 737 738 valid_block_count = sbi->total_valid_block_count + 1; 739 if (unlikely(valid_block_count > sbi->user_block_count)) { 740 spin_unlock(&sbi->stat_lock); 741 return false; 742 } 743 744 valid_node_count = sbi->total_valid_node_count + 1; 745 if (unlikely(valid_node_count > sbi->total_node_count)) { 746 spin_unlock(&sbi->stat_lock); 747 return false; 748 } 749 750 if (inode) 751 inode->i_blocks++; 752 753 sbi->alloc_valid_block_count++; 754 sbi->total_valid_node_count++; 755 sbi->total_valid_block_count++; 756 spin_unlock(&sbi->stat_lock); 757 758 return true; 759 } 760 761 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, 762 struct inode *inode) 763 { 764 spin_lock(&sbi->stat_lock); 765 766 f2fs_bug_on(!sbi->total_valid_block_count); 767 f2fs_bug_on(!sbi->total_valid_node_count); 768 f2fs_bug_on(!inode->i_blocks); 769 770 inode->i_blocks--; 771 sbi->total_valid_node_count--; 772 sbi->total_valid_block_count--; 773 774 spin_unlock(&sbi->stat_lock); 775 } 776 777 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) 778 { 779 unsigned int ret; 780 spin_lock(&sbi->stat_lock); 781 ret = sbi->total_valid_node_count; 782 spin_unlock(&sbi->stat_lock); 783 return ret; 784 } 785 786 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) 787 { 788 spin_lock(&sbi->stat_lock); 789 f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); 790 sbi->total_valid_inode_count++; 791 spin_unlock(&sbi->stat_lock); 792 } 793 794 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) 795 { 796 spin_lock(&sbi->stat_lock); 797 f2fs_bug_on(!sbi->total_valid_inode_count); 798 sbi->total_valid_inode_count--; 799 spin_unlock(&sbi->stat_lock); 800 } 801 802 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) 803 { 804 unsigned int ret; 805 spin_lock(&sbi->stat_lock); 806 ret = sbi->total_valid_inode_count; 807 spin_unlock(&sbi->stat_lock); 808 return ret; 809 } 810 811 static inline void f2fs_put_page(struct page *page, int unlock) 812 { 813 if (!page) 814 return; 815 816 if (unlock) { 817 f2fs_bug_on(!PageLocked(page)); 818 unlock_page(page); 819 } 820 page_cache_release(page); 821 } 822 823 static inline void f2fs_put_dnode(struct dnode_of_data *dn) 824 { 825 if (dn->node_page) 826 f2fs_put_page(dn->node_page, 1); 827 if (dn->inode_page && dn->node_page != dn->inode_page) 828 f2fs_put_page(dn->inode_page, 0); 829 dn->node_page = NULL; 830 dn->inode_page = NULL; 831 } 832 833 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, 834 size_t size, void (*ctor)(void *)) 835 { 836 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor); 837 } 838 839 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, 840 gfp_t flags) 841 { 842 void *entry; 843 retry: 844 entry = kmem_cache_alloc(cachep, flags); 845 if (!entry) { 846 cond_resched(); 847 goto retry; 848 } 849 850 return entry; 851 } 852 853 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) 854 855 static inline bool IS_INODE(struct page *page) 856 { 857 struct f2fs_node *p = F2FS_NODE(page); 858 return RAW_IS_INODE(p); 859 } 860 861 static inline __le32 *blkaddr_in_node(struct f2fs_node *node) 862 { 863 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; 864 } 865 866 static inline block_t datablock_addr(struct page *node_page, 867 unsigned int offset) 868 { 869 struct f2fs_node *raw_node; 870 __le32 *addr_array; 871 raw_node = F2FS_NODE(node_page); 872 addr_array = blkaddr_in_node(raw_node); 873 return le32_to_cpu(addr_array[offset]); 874 } 875 876 static inline int f2fs_test_bit(unsigned int nr, char *addr) 877 { 878 int mask; 879 880 addr += (nr >> 3); 881 mask = 1 << (7 - (nr & 0x07)); 882 return mask & *addr; 883 } 884 885 static inline int f2fs_set_bit(unsigned int nr, char *addr) 886 { 887 int mask; 888 int ret; 889 890 addr += (nr >> 3); 891 mask = 1 << (7 - (nr & 0x07)); 892 ret = mask & *addr; 893 *addr |= mask; 894 return ret; 895 } 896 897 static inline int f2fs_clear_bit(unsigned int nr, char *addr) 898 { 899 int mask; 900 int ret; 901 902 addr += (nr >> 3); 903 mask = 1 << (7 - (nr & 0x07)); 904 ret = mask & *addr; 905 *addr &= ~mask; 906 return ret; 907 } 908 909 /* used for f2fs_inode_info->flags */ 910 enum { 911 FI_NEW_INODE, /* indicate newly allocated inode */ 912 FI_DIRTY_INODE, /* indicate inode is dirty or not */ 913 FI_INC_LINK, /* need to increment i_nlink */ 914 FI_ACL_MODE, /* indicate acl mode */ 915 FI_NO_ALLOC, /* should not allocate any blocks */ 916 FI_UPDATE_DIR, /* should update inode block for consistency */ 917 FI_DELAY_IPUT, /* used for the recovery */ 918 FI_NO_EXTENT, /* not to use the extent cache */ 919 FI_INLINE_XATTR, /* used for inline xattr */ 920 FI_INLINE_DATA, /* used for inline data*/ 921 }; 922 923 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) 924 { 925 set_bit(flag, &fi->flags); 926 } 927 928 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) 929 { 930 return test_bit(flag, &fi->flags); 931 } 932 933 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) 934 { 935 clear_bit(flag, &fi->flags); 936 } 937 938 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) 939 { 940 fi->i_acl_mode = mode; 941 set_inode_flag(fi, FI_ACL_MODE); 942 } 943 944 static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) 945 { 946 if (is_inode_flag_set(fi, FI_ACL_MODE)) { 947 clear_inode_flag(fi, FI_ACL_MODE); 948 return 1; 949 } 950 return 0; 951 } 952 953 static inline void get_inline_info(struct f2fs_inode_info *fi, 954 struct f2fs_inode *ri) 955 { 956 if (ri->i_inline & F2FS_INLINE_XATTR) 957 set_inode_flag(fi, FI_INLINE_XATTR); 958 if (ri->i_inline & F2FS_INLINE_DATA) 959 set_inode_flag(fi, FI_INLINE_DATA); 960 } 961 962 static inline void set_raw_inline(struct f2fs_inode_info *fi, 963 struct f2fs_inode *ri) 964 { 965 ri->i_inline = 0; 966 967 if (is_inode_flag_set(fi, FI_INLINE_XATTR)) 968 ri->i_inline |= F2FS_INLINE_XATTR; 969 if (is_inode_flag_set(fi, FI_INLINE_DATA)) 970 ri->i_inline |= F2FS_INLINE_DATA; 971 } 972 973 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) 974 { 975 if (is_inode_flag_set(fi, FI_INLINE_XATTR)) 976 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; 977 return DEF_ADDRS_PER_INODE; 978 } 979 980 static inline void *inline_xattr_addr(struct page *page) 981 { 982 struct f2fs_inode *ri; 983 ri = (struct f2fs_inode *)page_address(page); 984 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - 985 F2FS_INLINE_XATTR_ADDRS]); 986 } 987 988 static inline int inline_xattr_size(struct inode *inode) 989 { 990 if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR)) 991 return F2FS_INLINE_XATTR_ADDRS << 2; 992 else 993 return 0; 994 } 995 996 static inline int f2fs_has_inline_data(struct inode *inode) 997 { 998 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); 999 } 1000 1001 static inline void *inline_data_addr(struct page *page) 1002 { 1003 struct f2fs_inode *ri; 1004 ri = (struct f2fs_inode *)page_address(page); 1005 return (void *)&(ri->i_addr[1]); 1006 } 1007 1008 static inline int f2fs_readonly(struct super_block *sb) 1009 { 1010 return sb->s_flags & MS_RDONLY; 1011 } 1012 1013 /* 1014 * file.c 1015 */ 1016 int f2fs_sync_file(struct file *, loff_t, loff_t, int); 1017 void truncate_data_blocks(struct dnode_of_data *); 1018 void f2fs_truncate(struct inode *); 1019 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 1020 int f2fs_setattr(struct dentry *, struct iattr *); 1021 int truncate_hole(struct inode *, pgoff_t, pgoff_t); 1022 int truncate_data_blocks_range(struct dnode_of_data *, int); 1023 long f2fs_ioctl(struct file *, unsigned int, unsigned long); 1024 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); 1025 1026 /* 1027 * inode.c 1028 */ 1029 void f2fs_set_inode_flags(struct inode *); 1030 struct inode *f2fs_iget(struct super_block *, unsigned long); 1031 int try_to_free_nats(struct f2fs_sb_info *, int); 1032 void update_inode(struct inode *, struct page *); 1033 int update_inode_page(struct inode *); 1034 int f2fs_write_inode(struct inode *, struct writeback_control *); 1035 void f2fs_evict_inode(struct inode *); 1036 1037 /* 1038 * namei.c 1039 */ 1040 struct dentry *f2fs_get_parent(struct dentry *child); 1041 1042 /* 1043 * dir.c 1044 */ 1045 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, 1046 struct page **); 1047 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); 1048 ino_t f2fs_inode_by_name(struct inode *, struct qstr *); 1049 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, 1050 struct page *, struct inode *); 1051 int update_dent_inode(struct inode *, const struct qstr *); 1052 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); 1053 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); 1054 int f2fs_make_empty(struct inode *, struct inode *); 1055 bool f2fs_empty_dir(struct inode *); 1056 1057 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) 1058 { 1059 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, 1060 inode); 1061 } 1062 1063 /* 1064 * super.c 1065 */ 1066 int f2fs_sync_fs(struct super_block *, int); 1067 extern __printf(3, 4) 1068 void f2fs_msg(struct super_block *, const char *, const char *, ...); 1069 1070 /* 1071 * hash.c 1072 */ 1073 f2fs_hash_t f2fs_dentry_hash(const char *, size_t); 1074 1075 /* 1076 * node.c 1077 */ 1078 struct dnode_of_data; 1079 struct node_info; 1080 1081 int is_checkpointed_node(struct f2fs_sb_info *, nid_t); 1082 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); 1083 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); 1084 int truncate_inode_blocks(struct inode *, pgoff_t); 1085 int truncate_xattr_node(struct inode *, struct page *); 1086 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); 1087 void remove_inode_page(struct inode *); 1088 struct page *new_inode_page(struct inode *, const struct qstr *); 1089 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); 1090 void ra_node_page(struct f2fs_sb_info *, nid_t); 1091 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); 1092 struct page *get_node_page_ra(struct page *, int); 1093 void sync_inode_page(struct dnode_of_data *); 1094 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); 1095 bool alloc_nid(struct f2fs_sb_info *, nid_t *); 1096 void alloc_nid_done(struct f2fs_sb_info *, nid_t); 1097 void alloc_nid_failed(struct f2fs_sb_info *, nid_t); 1098 void recover_node_page(struct f2fs_sb_info *, struct page *, 1099 struct f2fs_summary *, struct node_info *, block_t); 1100 int recover_inode_page(struct f2fs_sb_info *, struct page *); 1101 int restore_node_summary(struct f2fs_sb_info *, unsigned int, 1102 struct f2fs_summary_block *); 1103 void flush_nat_entries(struct f2fs_sb_info *); 1104 int build_node_manager(struct f2fs_sb_info *); 1105 void destroy_node_manager(struct f2fs_sb_info *); 1106 int __init create_node_manager_caches(void); 1107 void destroy_node_manager_caches(void); 1108 1109 /* 1110 * segment.c 1111 */ 1112 void f2fs_balance_fs(struct f2fs_sb_info *); 1113 void f2fs_balance_fs_bg(struct f2fs_sb_info *); 1114 void invalidate_blocks(struct f2fs_sb_info *, block_t); 1115 void clear_prefree_segments(struct f2fs_sb_info *); 1116 int npages_for_summary_flush(struct f2fs_sb_info *); 1117 void allocate_new_segments(struct f2fs_sb_info *); 1118 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); 1119 void write_meta_page(struct f2fs_sb_info *, struct page *); 1120 void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int, 1121 block_t, block_t *); 1122 void write_data_page(struct page *, struct dnode_of_data *, block_t *, 1123 struct f2fs_io_info *); 1124 void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *); 1125 void recover_data_page(struct f2fs_sb_info *, struct page *, 1126 struct f2fs_summary *, block_t, block_t); 1127 void rewrite_node_page(struct f2fs_sb_info *, struct page *, 1128 struct f2fs_summary *, block_t, block_t); 1129 void allocate_data_block(struct f2fs_sb_info *, struct page *, 1130 block_t, block_t *, struct f2fs_summary *, int); 1131 void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); 1132 void write_data_summaries(struct f2fs_sb_info *, block_t); 1133 void write_node_summaries(struct f2fs_sb_info *, block_t); 1134 int lookup_journal_in_cursum(struct f2fs_summary_block *, 1135 int, unsigned int, int); 1136 void flush_sit_entries(struct f2fs_sb_info *); 1137 int build_segment_manager(struct f2fs_sb_info *); 1138 void destroy_segment_manager(struct f2fs_sb_info *); 1139 int __init create_segment_manager_caches(void); 1140 void destroy_segment_manager_caches(void); 1141 1142 /* 1143 * checkpoint.c 1144 */ 1145 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); 1146 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); 1147 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); 1148 int acquire_orphan_inode(struct f2fs_sb_info *); 1149 void release_orphan_inode(struct f2fs_sb_info *); 1150 void add_orphan_inode(struct f2fs_sb_info *, nid_t); 1151 void remove_orphan_inode(struct f2fs_sb_info *, nid_t); 1152 void recover_orphan_inodes(struct f2fs_sb_info *); 1153 int get_valid_checkpoint(struct f2fs_sb_info *); 1154 void set_dirty_dir_page(struct inode *, struct page *); 1155 void add_dirty_dir_inode(struct inode *); 1156 void remove_dirty_dir_inode(struct inode *); 1157 struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t); 1158 void sync_dirty_dir_inodes(struct f2fs_sb_info *); 1159 void write_checkpoint(struct f2fs_sb_info *, bool); 1160 void init_orphan_info(struct f2fs_sb_info *); 1161 int __init create_checkpoint_caches(void); 1162 void destroy_checkpoint_caches(void); 1163 1164 /* 1165 * data.c 1166 */ 1167 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); 1168 int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int); 1169 void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t, 1170 struct f2fs_io_info *); 1171 int reserve_new_block(struct dnode_of_data *); 1172 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); 1173 void update_extent_cache(block_t, struct dnode_of_data *); 1174 struct page *find_data_page(struct inode *, pgoff_t, bool); 1175 struct page *get_lock_data_page(struct inode *, pgoff_t); 1176 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); 1177 int do_write_data_page(struct page *, struct f2fs_io_info *); 1178 1179 /* 1180 * gc.c 1181 */ 1182 int start_gc_thread(struct f2fs_sb_info *); 1183 void stop_gc_thread(struct f2fs_sb_info *); 1184 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); 1185 int f2fs_gc(struct f2fs_sb_info *); 1186 void build_gc_manager(struct f2fs_sb_info *); 1187 int __init create_gc_caches(void); 1188 void destroy_gc_caches(void); 1189 1190 /* 1191 * recovery.c 1192 */ 1193 int recover_fsync_data(struct f2fs_sb_info *); 1194 bool space_for_roll_forward(struct f2fs_sb_info *); 1195 1196 /* 1197 * debug.c 1198 */ 1199 #ifdef CONFIG_F2FS_STAT_FS 1200 struct f2fs_stat_info { 1201 struct list_head stat_list; 1202 struct f2fs_sb_info *sbi; 1203 struct mutex stat_lock; 1204 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; 1205 int main_area_segs, main_area_sections, main_area_zones; 1206 int hit_ext, total_ext; 1207 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; 1208 int nats, sits, fnids; 1209 int total_count, utilization; 1210 int bg_gc, inline_inode; 1211 unsigned int valid_count, valid_node_count, valid_inode_count; 1212 unsigned int bimodal, avg_vblocks; 1213 int util_free, util_valid, util_invalid; 1214 int rsvd_segs, overp_segs; 1215 int dirty_count, node_pages, meta_pages; 1216 int prefree_count, call_count; 1217 int tot_segs, node_segs, data_segs, free_segs, free_secs; 1218 int tot_blks, data_blks, node_blks; 1219 int curseg[NR_CURSEG_TYPE]; 1220 int cursec[NR_CURSEG_TYPE]; 1221 int curzone[NR_CURSEG_TYPE]; 1222 1223 unsigned int segment_count[2]; 1224 unsigned int block_count[2]; 1225 unsigned base_mem, cache_mem; 1226 }; 1227 1228 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) 1229 { 1230 return (struct f2fs_stat_info*)sbi->stat_info; 1231 } 1232 1233 #define stat_inc_call_count(si) ((si)->call_count++) 1234 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) 1235 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) 1236 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) 1237 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) 1238 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) 1239 #define stat_inc_inline_inode(inode) \ 1240 do { \ 1241 if (f2fs_has_inline_data(inode)) \ 1242 ((F2FS_SB(inode->i_sb))->inline_inode++); \ 1243 } while (0) 1244 #define stat_dec_inline_inode(inode) \ 1245 do { \ 1246 if (f2fs_has_inline_data(inode)) \ 1247 ((F2FS_SB(inode->i_sb))->inline_inode--); \ 1248 } while (0) 1249 1250 #define stat_inc_seg_type(sbi, curseg) \ 1251 ((sbi)->segment_count[(curseg)->alloc_type]++) 1252 #define stat_inc_block_count(sbi, curseg) \ 1253 ((sbi)->block_count[(curseg)->alloc_type]++) 1254 1255 #define stat_inc_seg_count(sbi, type) \ 1256 do { \ 1257 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1258 (si)->tot_segs++; \ 1259 if (type == SUM_TYPE_DATA) \ 1260 si->data_segs++; \ 1261 else \ 1262 si->node_segs++; \ 1263 } while (0) 1264 1265 #define stat_inc_tot_blk_count(si, blks) \ 1266 (si->tot_blks += (blks)) 1267 1268 #define stat_inc_data_blk_count(sbi, blks) \ 1269 do { \ 1270 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1271 stat_inc_tot_blk_count(si, blks); \ 1272 si->data_blks += (blks); \ 1273 } while (0) 1274 1275 #define stat_inc_node_blk_count(sbi, blks) \ 1276 do { \ 1277 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1278 stat_inc_tot_blk_count(si, blks); \ 1279 si->node_blks += (blks); \ 1280 } while (0) 1281 1282 int f2fs_build_stats(struct f2fs_sb_info *); 1283 void f2fs_destroy_stats(struct f2fs_sb_info *); 1284 void __init f2fs_create_root_stats(void); 1285 void f2fs_destroy_root_stats(void); 1286 #else 1287 #define stat_inc_call_count(si) 1288 #define stat_inc_bggc_count(si) 1289 #define stat_inc_dirty_dir(sbi) 1290 #define stat_dec_dirty_dir(sbi) 1291 #define stat_inc_total_hit(sb) 1292 #define stat_inc_read_hit(sb) 1293 #define stat_inc_inline_inode(inode) 1294 #define stat_dec_inline_inode(inode) 1295 #define stat_inc_seg_type(sbi, curseg) 1296 #define stat_inc_block_count(sbi, curseg) 1297 #define stat_inc_seg_count(si, type) 1298 #define stat_inc_tot_blk_count(si, blks) 1299 #define stat_inc_data_blk_count(si, blks) 1300 #define stat_inc_node_blk_count(sbi, blks) 1301 1302 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } 1303 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } 1304 static inline void __init f2fs_create_root_stats(void) { } 1305 static inline void f2fs_destroy_root_stats(void) { } 1306 #endif 1307 1308 extern const struct file_operations f2fs_dir_operations; 1309 extern const struct file_operations f2fs_file_operations; 1310 extern const struct inode_operations f2fs_file_inode_operations; 1311 extern const struct address_space_operations f2fs_dblock_aops; 1312 extern const struct address_space_operations f2fs_node_aops; 1313 extern const struct address_space_operations f2fs_meta_aops; 1314 extern const struct inode_operations f2fs_dir_inode_operations; 1315 extern const struct inode_operations f2fs_symlink_inode_operations; 1316 extern const struct inode_operations f2fs_special_inode_operations; 1317 1318 /* 1319 * inline.c 1320 */ 1321 bool f2fs_may_inline(struct inode *); 1322 int f2fs_read_inline_data(struct inode *, struct page *); 1323 int f2fs_convert_inline_data(struct inode *, pgoff_t); 1324 int f2fs_write_inline_data(struct inode *, struct page *, unsigned int); 1325 #endif 1326