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_datablock_ro. 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 }; 329 330 /* 331 * For superblock 332 */ 333 /* 334 * COUNT_TYPE for monitoring 335 * 336 * f2fs monitors the number of several block types such as on-writeback, 337 * dirty dentry blocks, dirty node blocks, and dirty meta blocks. 338 */ 339 enum count_type { 340 F2FS_WRITEBACK, 341 F2FS_DIRTY_DENTS, 342 F2FS_DIRTY_NODES, 343 F2FS_DIRTY_META, 344 NR_COUNT_TYPE, 345 }; 346 347 /* 348 * The below are the page types of bios used in submti_bio(). 349 * The available types are: 350 * DATA User data pages. It operates as async mode. 351 * NODE Node pages. It operates as async mode. 352 * META FS metadata pages such as SIT, NAT, CP. 353 * NR_PAGE_TYPE The number of page types. 354 * META_FLUSH Make sure the previous pages are written 355 * with waiting the bio's completion 356 * ... Only can be used with META. 357 */ 358 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) 359 enum page_type { 360 DATA, 361 NODE, 362 META, 363 NR_PAGE_TYPE, 364 META_FLUSH, 365 }; 366 367 struct f2fs_io_info { 368 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ 369 int rw; /* contains R/RS/W/WS */ 370 int rw_flag; /* contains REQ_META/REQ_PRIO */ 371 }; 372 373 #define is_read_io(rw) (((rw) & 1) == READ) 374 struct f2fs_bio_info { 375 struct f2fs_sb_info *sbi; /* f2fs superblock */ 376 struct bio *bio; /* bios to merge */ 377 sector_t last_block_in_bio; /* last block number */ 378 struct f2fs_io_info fio; /* store buffered io info. */ 379 struct mutex io_mutex; /* mutex for bio */ 380 }; 381 382 struct f2fs_sb_info { 383 struct super_block *sb; /* pointer to VFS super block */ 384 struct proc_dir_entry *s_proc; /* proc entry */ 385 struct buffer_head *raw_super_buf; /* buffer head of raw sb */ 386 struct f2fs_super_block *raw_super; /* raw super block pointer */ 387 int s_dirty; /* dirty flag for checkpoint */ 388 389 /* for node-related operations */ 390 struct f2fs_nm_info *nm_info; /* node manager */ 391 struct inode *node_inode; /* cache node blocks */ 392 393 /* for segment-related operations */ 394 struct f2fs_sm_info *sm_info; /* segment manager */ 395 396 /* for bio operations */ 397 struct f2fs_bio_info read_io; /* for read bios */ 398 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ 399 400 /* for checkpoint */ 401 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ 402 struct inode *meta_inode; /* cache meta blocks */ 403 struct mutex cp_mutex; /* checkpoint procedure lock */ 404 struct rw_semaphore cp_rwsem; /* blocking FS operations */ 405 struct mutex node_write; /* locking node writes */ 406 struct mutex writepages; /* mutex for writepages() */ 407 bool por_doing; /* recovery is doing or not */ 408 bool on_build_free_nids; /* build_free_nids is doing */ 409 wait_queue_head_t cp_wait; 410 411 /* for orphan inode management */ 412 struct list_head orphan_inode_list; /* orphan inode list */ 413 struct mutex orphan_inode_mutex; /* for orphan inode list */ 414 unsigned int n_orphans; /* # of orphan inodes */ 415 416 /* for directory inode management */ 417 struct list_head dir_inode_list; /* dir inode list */ 418 spinlock_t dir_inode_lock; /* for dir inode list lock */ 419 420 /* basic file system units */ 421 unsigned int log_sectors_per_block; /* log2 sectors per block */ 422 unsigned int log_blocksize; /* log2 block size */ 423 unsigned int blocksize; /* block size */ 424 unsigned int root_ino_num; /* root inode number*/ 425 unsigned int node_ino_num; /* node inode number*/ 426 unsigned int meta_ino_num; /* meta inode number*/ 427 unsigned int log_blocks_per_seg; /* log2 blocks per segment */ 428 unsigned int blocks_per_seg; /* blocks per segment */ 429 unsigned int segs_per_sec; /* segments per section */ 430 unsigned int secs_per_zone; /* sections per zone */ 431 unsigned int total_sections; /* total section count */ 432 unsigned int total_node_count; /* total node block count */ 433 unsigned int total_valid_node_count; /* valid node block count */ 434 unsigned int total_valid_inode_count; /* valid inode count */ 435 int active_logs; /* # of active logs */ 436 437 block_t user_block_count; /* # of user blocks */ 438 block_t total_valid_block_count; /* # of valid blocks */ 439 block_t alloc_valid_block_count; /* # of allocated blocks */ 440 block_t last_valid_block_count; /* for recovery */ 441 u32 s_next_generation; /* for NFS support */ 442 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ 443 444 struct f2fs_mount_info mount_opt; /* mount options */ 445 446 /* for cleaning operations */ 447 struct mutex gc_mutex; /* mutex for GC */ 448 struct f2fs_gc_kthread *gc_thread; /* GC thread */ 449 unsigned int cur_victim_sec; /* current victim section num */ 450 451 /* 452 * for stat information. 453 * one is for the LFS mode, and the other is for the SSR mode. 454 */ 455 #ifdef CONFIG_F2FS_STAT_FS 456 struct f2fs_stat_info *stat_info; /* FS status information */ 457 unsigned int segment_count[2]; /* # of allocated segments */ 458 unsigned int block_count[2]; /* # of allocated blocks */ 459 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ 460 int bg_gc; /* background gc calls */ 461 unsigned int n_dirty_dirs; /* # of dir inodes */ 462 #endif 463 unsigned int last_victim[2]; /* last victim segment # */ 464 spinlock_t stat_lock; /* lock for stat operations */ 465 466 /* For sysfs suppport */ 467 struct kobject s_kobj; 468 struct completion s_kobj_unregister; 469 }; 470 471 /* 472 * Inline functions 473 */ 474 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) 475 { 476 return container_of(inode, struct f2fs_inode_info, vfs_inode); 477 } 478 479 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) 480 { 481 return sb->s_fs_info; 482 } 483 484 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) 485 { 486 return (struct f2fs_super_block *)(sbi->raw_super); 487 } 488 489 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) 490 { 491 return (struct f2fs_checkpoint *)(sbi->ckpt); 492 } 493 494 static inline struct f2fs_node *F2FS_NODE(struct page *page) 495 { 496 return (struct f2fs_node *)page_address(page); 497 } 498 499 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) 500 { 501 return (struct f2fs_nm_info *)(sbi->nm_info); 502 } 503 504 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) 505 { 506 return (struct f2fs_sm_info *)(sbi->sm_info); 507 } 508 509 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) 510 { 511 return (struct sit_info *)(SM_I(sbi)->sit_info); 512 } 513 514 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) 515 { 516 return (struct free_segmap_info *)(SM_I(sbi)->free_info); 517 } 518 519 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) 520 { 521 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); 522 } 523 524 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) 525 { 526 sbi->s_dirty = 1; 527 } 528 529 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) 530 { 531 sbi->s_dirty = 0; 532 } 533 534 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) 535 { 536 return le64_to_cpu(cp->checkpoint_ver); 537 } 538 539 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 540 { 541 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 542 return ckpt_flags & f; 543 } 544 545 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 546 { 547 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 548 ckpt_flags |= f; 549 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 550 } 551 552 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 553 { 554 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 555 ckpt_flags &= (~f); 556 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 557 } 558 559 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) 560 { 561 down_read(&sbi->cp_rwsem); 562 } 563 564 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) 565 { 566 up_read(&sbi->cp_rwsem); 567 } 568 569 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) 570 { 571 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); 572 } 573 574 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) 575 { 576 up_write(&sbi->cp_rwsem); 577 } 578 579 /* 580 * Check whether the given nid is within node id range. 581 */ 582 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 583 { 584 WARN_ON((nid >= NM_I(sbi)->max_nid)); 585 if (unlikely(nid >= NM_I(sbi)->max_nid)) 586 return -EINVAL; 587 return 0; 588 } 589 590 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 591 592 /* 593 * Check whether the inode has blocks or not 594 */ 595 static inline int F2FS_HAS_BLOCKS(struct inode *inode) 596 { 597 if (F2FS_I(inode)->i_xattr_nid) 598 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); 599 else 600 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); 601 } 602 603 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, 604 struct inode *inode, blkcnt_t count) 605 { 606 block_t valid_block_count; 607 608 spin_lock(&sbi->stat_lock); 609 valid_block_count = 610 sbi->total_valid_block_count + (block_t)count; 611 if (unlikely(valid_block_count > sbi->user_block_count)) { 612 spin_unlock(&sbi->stat_lock); 613 return false; 614 } 615 inode->i_blocks += count; 616 sbi->total_valid_block_count = valid_block_count; 617 sbi->alloc_valid_block_count += (block_t)count; 618 spin_unlock(&sbi->stat_lock); 619 return true; 620 } 621 622 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, 623 struct inode *inode, 624 blkcnt_t count) 625 { 626 spin_lock(&sbi->stat_lock); 627 f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); 628 f2fs_bug_on(inode->i_blocks < count); 629 inode->i_blocks -= count; 630 sbi->total_valid_block_count -= (block_t)count; 631 spin_unlock(&sbi->stat_lock); 632 } 633 634 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) 635 { 636 atomic_inc(&sbi->nr_pages[count_type]); 637 F2FS_SET_SB_DIRT(sbi); 638 } 639 640 static inline void inode_inc_dirty_dents(struct inode *inode) 641 { 642 atomic_inc(&F2FS_I(inode)->dirty_dents); 643 } 644 645 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) 646 { 647 atomic_dec(&sbi->nr_pages[count_type]); 648 } 649 650 static inline void inode_dec_dirty_dents(struct inode *inode) 651 { 652 atomic_dec(&F2FS_I(inode)->dirty_dents); 653 } 654 655 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) 656 { 657 return atomic_read(&sbi->nr_pages[count_type]); 658 } 659 660 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) 661 { 662 unsigned int pages_per_sec = sbi->segs_per_sec * 663 (1 << sbi->log_blocks_per_seg); 664 return ((get_pages(sbi, block_type) + pages_per_sec - 1) 665 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; 666 } 667 668 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) 669 { 670 block_t ret; 671 spin_lock(&sbi->stat_lock); 672 ret = sbi->total_valid_block_count; 673 spin_unlock(&sbi->stat_lock); 674 return ret; 675 } 676 677 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) 678 { 679 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 680 681 /* return NAT or SIT bitmap */ 682 if (flag == NAT_BITMAP) 683 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 684 else if (flag == SIT_BITMAP) 685 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 686 687 return 0; 688 } 689 690 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) 691 { 692 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 693 int offset = (flag == NAT_BITMAP) ? 694 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; 695 return &ckpt->sit_nat_version_bitmap + offset; 696 } 697 698 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) 699 { 700 block_t start_addr; 701 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 702 unsigned long long ckpt_version = cur_cp_version(ckpt); 703 704 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); 705 706 /* 707 * odd numbered checkpoint should at cp segment 0 708 * and even segent must be at cp segment 1 709 */ 710 if (!(ckpt_version & 1)) 711 start_addr += sbi->blocks_per_seg; 712 713 return start_addr; 714 } 715 716 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) 717 { 718 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); 719 } 720 721 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, 722 struct inode *inode) 723 { 724 block_t valid_block_count; 725 unsigned int valid_node_count; 726 727 spin_lock(&sbi->stat_lock); 728 729 valid_block_count = sbi->total_valid_block_count + 1; 730 if (unlikely(valid_block_count > sbi->user_block_count)) { 731 spin_unlock(&sbi->stat_lock); 732 return false; 733 } 734 735 valid_node_count = sbi->total_valid_node_count + 1; 736 if (unlikely(valid_node_count > sbi->total_node_count)) { 737 spin_unlock(&sbi->stat_lock); 738 return false; 739 } 740 741 if (inode) 742 inode->i_blocks++; 743 744 sbi->alloc_valid_block_count++; 745 sbi->total_valid_node_count++; 746 sbi->total_valid_block_count++; 747 spin_unlock(&sbi->stat_lock); 748 749 return true; 750 } 751 752 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, 753 struct inode *inode) 754 { 755 spin_lock(&sbi->stat_lock); 756 757 f2fs_bug_on(!sbi->total_valid_block_count); 758 f2fs_bug_on(!sbi->total_valid_node_count); 759 f2fs_bug_on(!inode->i_blocks); 760 761 inode->i_blocks--; 762 sbi->total_valid_node_count--; 763 sbi->total_valid_block_count--; 764 765 spin_unlock(&sbi->stat_lock); 766 } 767 768 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) 769 { 770 unsigned int ret; 771 spin_lock(&sbi->stat_lock); 772 ret = sbi->total_valid_node_count; 773 spin_unlock(&sbi->stat_lock); 774 return ret; 775 } 776 777 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) 778 { 779 spin_lock(&sbi->stat_lock); 780 f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); 781 sbi->total_valid_inode_count++; 782 spin_unlock(&sbi->stat_lock); 783 } 784 785 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) 786 { 787 spin_lock(&sbi->stat_lock); 788 f2fs_bug_on(!sbi->total_valid_inode_count); 789 sbi->total_valid_inode_count--; 790 spin_unlock(&sbi->stat_lock); 791 } 792 793 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) 794 { 795 unsigned int ret; 796 spin_lock(&sbi->stat_lock); 797 ret = sbi->total_valid_inode_count; 798 spin_unlock(&sbi->stat_lock); 799 return ret; 800 } 801 802 static inline void f2fs_put_page(struct page *page, int unlock) 803 { 804 if (!page) 805 return; 806 807 if (unlock) { 808 f2fs_bug_on(!PageLocked(page)); 809 unlock_page(page); 810 } 811 page_cache_release(page); 812 } 813 814 static inline void f2fs_put_dnode(struct dnode_of_data *dn) 815 { 816 if (dn->node_page) 817 f2fs_put_page(dn->node_page, 1); 818 if (dn->inode_page && dn->node_page != dn->inode_page) 819 f2fs_put_page(dn->inode_page, 0); 820 dn->node_page = NULL; 821 dn->inode_page = NULL; 822 } 823 824 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, 825 size_t size, void (*ctor)(void *)) 826 { 827 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor); 828 } 829 830 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, 831 gfp_t flags) 832 { 833 void *entry; 834 retry: 835 entry = kmem_cache_alloc(cachep, flags); 836 if (!entry) { 837 cond_resched(); 838 goto retry; 839 } 840 841 return entry; 842 } 843 844 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) 845 846 static inline bool IS_INODE(struct page *page) 847 { 848 struct f2fs_node *p = F2FS_NODE(page); 849 return RAW_IS_INODE(p); 850 } 851 852 static inline __le32 *blkaddr_in_node(struct f2fs_node *node) 853 { 854 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; 855 } 856 857 static inline block_t datablock_addr(struct page *node_page, 858 unsigned int offset) 859 { 860 struct f2fs_node *raw_node; 861 __le32 *addr_array; 862 raw_node = F2FS_NODE(node_page); 863 addr_array = blkaddr_in_node(raw_node); 864 return le32_to_cpu(addr_array[offset]); 865 } 866 867 static inline int f2fs_test_bit(unsigned int nr, char *addr) 868 { 869 int mask; 870 871 addr += (nr >> 3); 872 mask = 1 << (7 - (nr & 0x07)); 873 return mask & *addr; 874 } 875 876 static inline int f2fs_set_bit(unsigned int nr, char *addr) 877 { 878 int mask; 879 int ret; 880 881 addr += (nr >> 3); 882 mask = 1 << (7 - (nr & 0x07)); 883 ret = mask & *addr; 884 *addr |= mask; 885 return ret; 886 } 887 888 static inline int f2fs_clear_bit(unsigned int nr, char *addr) 889 { 890 int mask; 891 int ret; 892 893 addr += (nr >> 3); 894 mask = 1 << (7 - (nr & 0x07)); 895 ret = mask & *addr; 896 *addr &= ~mask; 897 return ret; 898 } 899 900 /* used for f2fs_inode_info->flags */ 901 enum { 902 FI_NEW_INODE, /* indicate newly allocated inode */ 903 FI_DIRTY_INODE, /* indicate inode is dirty or not */ 904 FI_INC_LINK, /* need to increment i_nlink */ 905 FI_ACL_MODE, /* indicate acl mode */ 906 FI_NO_ALLOC, /* should not allocate any blocks */ 907 FI_UPDATE_DIR, /* should update inode block for consistency */ 908 FI_DELAY_IPUT, /* used for the recovery */ 909 FI_NO_EXTENT, /* not to use the extent cache */ 910 FI_INLINE_XATTR, /* used for inline xattr */ 911 FI_INLINE_DATA, /* used for inline data*/ 912 }; 913 914 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) 915 { 916 set_bit(flag, &fi->flags); 917 } 918 919 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) 920 { 921 return test_bit(flag, &fi->flags); 922 } 923 924 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) 925 { 926 clear_bit(flag, &fi->flags); 927 } 928 929 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) 930 { 931 fi->i_acl_mode = mode; 932 set_inode_flag(fi, FI_ACL_MODE); 933 } 934 935 static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) 936 { 937 if (is_inode_flag_set(fi, FI_ACL_MODE)) { 938 clear_inode_flag(fi, FI_ACL_MODE); 939 return 1; 940 } 941 return 0; 942 } 943 944 static inline void get_inline_info(struct f2fs_inode_info *fi, 945 struct f2fs_inode *ri) 946 { 947 if (ri->i_inline & F2FS_INLINE_XATTR) 948 set_inode_flag(fi, FI_INLINE_XATTR); 949 if (ri->i_inline & F2FS_INLINE_DATA) 950 set_inode_flag(fi, FI_INLINE_DATA); 951 } 952 953 static inline void set_raw_inline(struct f2fs_inode_info *fi, 954 struct f2fs_inode *ri) 955 { 956 ri->i_inline = 0; 957 958 if (is_inode_flag_set(fi, FI_INLINE_XATTR)) 959 ri->i_inline |= F2FS_INLINE_XATTR; 960 if (is_inode_flag_set(fi, FI_INLINE_DATA)) 961 ri->i_inline |= F2FS_INLINE_DATA; 962 } 963 964 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) 965 { 966 if (is_inode_flag_set(fi, FI_INLINE_XATTR)) 967 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; 968 return DEF_ADDRS_PER_INODE; 969 } 970 971 static inline void *inline_xattr_addr(struct page *page) 972 { 973 struct f2fs_inode *ri; 974 ri = (struct f2fs_inode *)page_address(page); 975 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - 976 F2FS_INLINE_XATTR_ADDRS]); 977 } 978 979 static inline int inline_xattr_size(struct inode *inode) 980 { 981 if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR)) 982 return F2FS_INLINE_XATTR_ADDRS << 2; 983 else 984 return 0; 985 } 986 987 static inline void *inline_data_addr(struct page *page) 988 { 989 struct f2fs_inode *ri; 990 ri = (struct f2fs_inode *)page_address(page); 991 return (void *)&(ri->i_addr[1]); 992 } 993 994 static inline int f2fs_readonly(struct super_block *sb) 995 { 996 return sb->s_flags & MS_RDONLY; 997 } 998 999 /* 1000 * file.c 1001 */ 1002 int f2fs_sync_file(struct file *, loff_t, loff_t, int); 1003 void truncate_data_blocks(struct dnode_of_data *); 1004 void f2fs_truncate(struct inode *); 1005 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 1006 int f2fs_setattr(struct dentry *, struct iattr *); 1007 int truncate_hole(struct inode *, pgoff_t, pgoff_t); 1008 int truncate_data_blocks_range(struct dnode_of_data *, int); 1009 long f2fs_ioctl(struct file *, unsigned int, unsigned long); 1010 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); 1011 1012 /* 1013 * inode.c 1014 */ 1015 void f2fs_set_inode_flags(struct inode *); 1016 struct inode *f2fs_iget(struct super_block *, unsigned long); 1017 int try_to_free_nats(struct f2fs_sb_info *, int); 1018 void update_inode(struct inode *, struct page *); 1019 int update_inode_page(struct inode *); 1020 int f2fs_write_inode(struct inode *, struct writeback_control *); 1021 void f2fs_evict_inode(struct inode *); 1022 1023 /* 1024 * namei.c 1025 */ 1026 struct dentry *f2fs_get_parent(struct dentry *child); 1027 1028 /* 1029 * dir.c 1030 */ 1031 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, 1032 struct page **); 1033 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); 1034 ino_t f2fs_inode_by_name(struct inode *, struct qstr *); 1035 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, 1036 struct page *, struct inode *); 1037 int update_dent_inode(struct inode *, const struct qstr *); 1038 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); 1039 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); 1040 int f2fs_make_empty(struct inode *, struct inode *); 1041 bool f2fs_empty_dir(struct inode *); 1042 1043 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) 1044 { 1045 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, 1046 inode); 1047 } 1048 1049 /* 1050 * super.c 1051 */ 1052 int f2fs_sync_fs(struct super_block *, int); 1053 extern __printf(3, 4) 1054 void f2fs_msg(struct super_block *, const char *, const char *, ...); 1055 1056 /* 1057 * hash.c 1058 */ 1059 f2fs_hash_t f2fs_dentry_hash(const char *, size_t); 1060 1061 /* 1062 * node.c 1063 */ 1064 struct dnode_of_data; 1065 struct node_info; 1066 1067 int is_checkpointed_node(struct f2fs_sb_info *, nid_t); 1068 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); 1069 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); 1070 int truncate_inode_blocks(struct inode *, pgoff_t); 1071 int truncate_xattr_node(struct inode *, struct page *); 1072 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); 1073 void remove_inode_page(struct inode *); 1074 struct page *new_inode_page(struct inode *, const struct qstr *); 1075 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); 1076 void ra_node_page(struct f2fs_sb_info *, nid_t); 1077 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); 1078 struct page *get_node_page_ra(struct page *, int); 1079 void sync_inode_page(struct dnode_of_data *); 1080 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); 1081 bool alloc_nid(struct f2fs_sb_info *, nid_t *); 1082 void alloc_nid_done(struct f2fs_sb_info *, nid_t); 1083 void alloc_nid_failed(struct f2fs_sb_info *, nid_t); 1084 void recover_node_page(struct f2fs_sb_info *, struct page *, 1085 struct f2fs_summary *, struct node_info *, block_t); 1086 int recover_inode_page(struct f2fs_sb_info *, struct page *); 1087 int restore_node_summary(struct f2fs_sb_info *, unsigned int, 1088 struct f2fs_summary_block *); 1089 void flush_nat_entries(struct f2fs_sb_info *); 1090 int build_node_manager(struct f2fs_sb_info *); 1091 void destroy_node_manager(struct f2fs_sb_info *); 1092 int __init create_node_manager_caches(void); 1093 void destroy_node_manager_caches(void); 1094 1095 /* 1096 * segment.c 1097 */ 1098 void f2fs_balance_fs(struct f2fs_sb_info *); 1099 void f2fs_balance_fs_bg(struct f2fs_sb_info *); 1100 void invalidate_blocks(struct f2fs_sb_info *, block_t); 1101 void clear_prefree_segments(struct f2fs_sb_info *); 1102 int npages_for_summary_flush(struct f2fs_sb_info *); 1103 void allocate_new_segments(struct f2fs_sb_info *); 1104 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); 1105 void write_meta_page(struct f2fs_sb_info *, struct page *); 1106 void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int, 1107 block_t, block_t *); 1108 void write_data_page(struct page *, struct dnode_of_data *, block_t *, 1109 struct f2fs_io_info *); 1110 void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *); 1111 void recover_data_page(struct f2fs_sb_info *, struct page *, 1112 struct f2fs_summary *, block_t, block_t); 1113 void rewrite_node_page(struct f2fs_sb_info *, struct page *, 1114 struct f2fs_summary *, block_t, block_t); 1115 void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); 1116 void write_data_summaries(struct f2fs_sb_info *, block_t); 1117 void write_node_summaries(struct f2fs_sb_info *, block_t); 1118 int lookup_journal_in_cursum(struct f2fs_summary_block *, 1119 int, unsigned int, int); 1120 void flush_sit_entries(struct f2fs_sb_info *); 1121 int build_segment_manager(struct f2fs_sb_info *); 1122 void destroy_segment_manager(struct f2fs_sb_info *); 1123 int __init create_segment_manager_caches(void); 1124 void destroy_segment_manager_caches(void); 1125 1126 /* 1127 * checkpoint.c 1128 */ 1129 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); 1130 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); 1131 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); 1132 int acquire_orphan_inode(struct f2fs_sb_info *); 1133 void release_orphan_inode(struct f2fs_sb_info *); 1134 void add_orphan_inode(struct f2fs_sb_info *, nid_t); 1135 void remove_orphan_inode(struct f2fs_sb_info *, nid_t); 1136 void recover_orphan_inodes(struct f2fs_sb_info *); 1137 int get_valid_checkpoint(struct f2fs_sb_info *); 1138 void set_dirty_dir_page(struct inode *, struct page *); 1139 void add_dirty_dir_inode(struct inode *); 1140 void remove_dirty_dir_inode(struct inode *); 1141 struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t); 1142 void sync_dirty_dir_inodes(struct f2fs_sb_info *); 1143 void write_checkpoint(struct f2fs_sb_info *, bool); 1144 void init_orphan_info(struct f2fs_sb_info *); 1145 int __init create_checkpoint_caches(void); 1146 void destroy_checkpoint_caches(void); 1147 1148 /* 1149 * data.c 1150 */ 1151 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); 1152 int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int); 1153 void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t, 1154 struct f2fs_io_info *); 1155 int reserve_new_block(struct dnode_of_data *); 1156 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); 1157 void update_extent_cache(block_t, struct dnode_of_data *); 1158 struct page *find_data_page(struct inode *, pgoff_t, bool); 1159 struct page *get_lock_data_page(struct inode *, pgoff_t); 1160 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); 1161 int do_write_data_page(struct page *, struct f2fs_io_info *); 1162 1163 /* 1164 * gc.c 1165 */ 1166 int start_gc_thread(struct f2fs_sb_info *); 1167 void stop_gc_thread(struct f2fs_sb_info *); 1168 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); 1169 int f2fs_gc(struct f2fs_sb_info *); 1170 void build_gc_manager(struct f2fs_sb_info *); 1171 int __init create_gc_caches(void); 1172 void destroy_gc_caches(void); 1173 1174 /* 1175 * recovery.c 1176 */ 1177 int recover_fsync_data(struct f2fs_sb_info *); 1178 bool space_for_roll_forward(struct f2fs_sb_info *); 1179 1180 /* 1181 * debug.c 1182 */ 1183 #ifdef CONFIG_F2FS_STAT_FS 1184 struct f2fs_stat_info { 1185 struct list_head stat_list; 1186 struct f2fs_sb_info *sbi; 1187 struct mutex stat_lock; 1188 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; 1189 int main_area_segs, main_area_sections, main_area_zones; 1190 int hit_ext, total_ext; 1191 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; 1192 int nats, sits, fnids; 1193 int total_count, utilization; 1194 int bg_gc; 1195 unsigned int valid_count, valid_node_count, valid_inode_count; 1196 unsigned int bimodal, avg_vblocks; 1197 int util_free, util_valid, util_invalid; 1198 int rsvd_segs, overp_segs; 1199 int dirty_count, node_pages, meta_pages; 1200 int prefree_count, call_count; 1201 int tot_segs, node_segs, data_segs, free_segs, free_secs; 1202 int tot_blks, data_blks, node_blks; 1203 int curseg[NR_CURSEG_TYPE]; 1204 int cursec[NR_CURSEG_TYPE]; 1205 int curzone[NR_CURSEG_TYPE]; 1206 1207 unsigned int segment_count[2]; 1208 unsigned int block_count[2]; 1209 unsigned base_mem, cache_mem; 1210 }; 1211 1212 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) 1213 { 1214 return (struct f2fs_stat_info*)sbi->stat_info; 1215 } 1216 1217 #define stat_inc_call_count(si) ((si)->call_count++) 1218 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) 1219 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) 1220 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) 1221 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) 1222 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) 1223 #define stat_inc_seg_type(sbi, curseg) \ 1224 ((sbi)->segment_count[(curseg)->alloc_type]++) 1225 #define stat_inc_block_count(sbi, curseg) \ 1226 ((sbi)->block_count[(curseg)->alloc_type]++) 1227 1228 #define stat_inc_seg_count(sbi, type) \ 1229 do { \ 1230 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1231 (si)->tot_segs++; \ 1232 if (type == SUM_TYPE_DATA) \ 1233 si->data_segs++; \ 1234 else \ 1235 si->node_segs++; \ 1236 } while (0) 1237 1238 #define stat_inc_tot_blk_count(si, blks) \ 1239 (si->tot_blks += (blks)) 1240 1241 #define stat_inc_data_blk_count(sbi, blks) \ 1242 do { \ 1243 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1244 stat_inc_tot_blk_count(si, blks); \ 1245 si->data_blks += (blks); \ 1246 } while (0) 1247 1248 #define stat_inc_node_blk_count(sbi, blks) \ 1249 do { \ 1250 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1251 stat_inc_tot_blk_count(si, blks); \ 1252 si->node_blks += (blks); \ 1253 } while (0) 1254 1255 int f2fs_build_stats(struct f2fs_sb_info *); 1256 void f2fs_destroy_stats(struct f2fs_sb_info *); 1257 void __init f2fs_create_root_stats(void); 1258 void f2fs_destroy_root_stats(void); 1259 #else 1260 #define stat_inc_call_count(si) 1261 #define stat_inc_bggc_count(si) 1262 #define stat_inc_dirty_dir(sbi) 1263 #define stat_dec_dirty_dir(sbi) 1264 #define stat_inc_total_hit(sb) 1265 #define stat_inc_read_hit(sb) 1266 #define stat_inc_seg_type(sbi, curseg) 1267 #define stat_inc_block_count(sbi, curseg) 1268 #define stat_inc_seg_count(si, type) 1269 #define stat_inc_tot_blk_count(si, blks) 1270 #define stat_inc_data_blk_count(si, blks) 1271 #define stat_inc_node_blk_count(sbi, blks) 1272 1273 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } 1274 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } 1275 static inline void __init f2fs_create_root_stats(void) { } 1276 static inline void f2fs_destroy_root_stats(void) { } 1277 #endif 1278 1279 extern const struct file_operations f2fs_dir_operations; 1280 extern const struct file_operations f2fs_file_operations; 1281 extern const struct inode_operations f2fs_file_inode_operations; 1282 extern const struct address_space_operations f2fs_dblock_aops; 1283 extern const struct address_space_operations f2fs_node_aops; 1284 extern const struct address_space_operations f2fs_meta_aops; 1285 extern const struct inode_operations f2fs_dir_inode_operations; 1286 extern const struct inode_operations f2fs_symlink_inode_operations; 1287 extern const struct inode_operations f2fs_special_inode_operations; 1288 1289 #endif 1290