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 #else 26 #define f2fs_bug_on(condition) 27 #endif 28 29 /* 30 * For mount options 31 */ 32 #define F2FS_MOUNT_BG_GC 0x00000001 33 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 34 #define F2FS_MOUNT_DISCARD 0x00000004 35 #define F2FS_MOUNT_NOHEAP 0x00000008 36 #define F2FS_MOUNT_XATTR_USER 0x00000010 37 #define F2FS_MOUNT_POSIX_ACL 0x00000020 38 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 39 #define F2FS_MOUNT_INLINE_XATTR 0x00000080 40 41 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) 42 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) 43 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) 44 45 #define ver_after(a, b) (typecheck(unsigned long long, a) && \ 46 typecheck(unsigned long long, b) && \ 47 ((long long)((a) - (b)) > 0)) 48 49 typedef u32 block_t; /* 50 * should not change u32, since it is the on-disk block 51 * address format, __le32. 52 */ 53 typedef u32 nid_t; 54 55 struct f2fs_mount_info { 56 unsigned int opt; 57 }; 58 59 #define CRCPOLY_LE 0xedb88320 60 61 static inline __u32 f2fs_crc32(void *buf, size_t len) 62 { 63 unsigned char *p = (unsigned char *)buf; 64 __u32 crc = F2FS_SUPER_MAGIC; 65 int i; 66 67 while (len--) { 68 crc ^= *p++; 69 for (i = 0; i < 8; i++) 70 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); 71 } 72 return crc; 73 } 74 75 static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) 76 { 77 return f2fs_crc32(buf, buf_size) == blk_crc; 78 } 79 80 /* 81 * For checkpoint manager 82 */ 83 enum { 84 NAT_BITMAP, 85 SIT_BITMAP 86 }; 87 88 /* for the list of orphan inodes */ 89 struct orphan_inode_entry { 90 struct list_head list; /* list head */ 91 nid_t ino; /* inode number */ 92 }; 93 94 /* for the list of directory inodes */ 95 struct dir_inode_entry { 96 struct list_head list; /* list head */ 97 struct inode *inode; /* vfs inode pointer */ 98 }; 99 100 /* for the list of blockaddresses to be discarded */ 101 struct discard_entry { 102 struct list_head list; /* list head */ 103 block_t blkaddr; /* block address to be discarded */ 104 int len; /* # of consecutive blocks of the discard */ 105 }; 106 107 /* for the list of fsync inodes, used only during recovery */ 108 struct fsync_inode_entry { 109 struct list_head list; /* list head */ 110 struct inode *inode; /* vfs inode pointer */ 111 block_t blkaddr; /* block address locating the last inode */ 112 }; 113 114 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) 115 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) 116 117 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) 118 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) 119 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) 120 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) 121 122 static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) 123 { 124 int before = nats_in_cursum(rs); 125 rs->n_nats = cpu_to_le16(before + i); 126 return before; 127 } 128 129 static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) 130 { 131 int before = sits_in_cursum(rs); 132 rs->n_sits = cpu_to_le16(before + i); 133 return before; 134 } 135 136 /* 137 * ioctl commands 138 */ 139 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS 140 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS 141 142 #if defined(__KERNEL__) && defined(CONFIG_COMPAT) 143 /* 144 * ioctl commands in 32 bit emulation 145 */ 146 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS 147 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS 148 #endif 149 150 /* 151 * For INODE and NODE manager 152 */ 153 /* 154 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 155 * as its node offset to distinguish from index node blocks. 156 * But some bits are used to mark the node block. 157 */ 158 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ 159 >> OFFSET_BIT_SHIFT) 160 enum { 161 ALLOC_NODE, /* allocate a new node page if needed */ 162 LOOKUP_NODE, /* look up a node without readahead */ 163 LOOKUP_NODE_RA, /* 164 * look up a node with readahead called 165 * by get_datablock_ro. 166 */ 167 }; 168 169 #define F2FS_LINK_MAX 32000 /* maximum link count per file */ 170 171 /* for in-memory extent cache entry */ 172 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ 173 174 struct extent_info { 175 rwlock_t ext_lock; /* rwlock for consistency */ 176 unsigned int fofs; /* start offset in a file */ 177 u32 blk_addr; /* start block address of the extent */ 178 unsigned int len; /* length of the extent */ 179 }; 180 181 /* 182 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. 183 */ 184 #define FADVISE_COLD_BIT 0x01 185 #define FADVISE_LOST_PINO_BIT 0x02 186 187 struct f2fs_inode_info { 188 struct inode vfs_inode; /* serve a vfs inode */ 189 unsigned long i_flags; /* keep an inode flags for ioctl */ 190 unsigned char i_advise; /* use to give file attribute hints */ 191 unsigned int i_current_depth; /* use only in directory structure */ 192 unsigned int i_pino; /* parent inode number */ 193 umode_t i_acl_mode; /* keep file acl mode temporarily */ 194 195 /* Use below internally in f2fs*/ 196 unsigned long flags; /* use to pass per-file flags */ 197 atomic_t dirty_dents; /* # of dirty dentry pages */ 198 f2fs_hash_t chash; /* hash value of given file name */ 199 unsigned int clevel; /* maximum level of given file name */ 200 nid_t i_xattr_nid; /* node id that contains xattrs */ 201 unsigned long long xattr_ver; /* cp version of xattr modification */ 202 struct extent_info ext; /* in-memory extent cache entry */ 203 }; 204 205 static inline void get_extent_info(struct extent_info *ext, 206 struct f2fs_extent i_ext) 207 { 208 write_lock(&ext->ext_lock); 209 ext->fofs = le32_to_cpu(i_ext.fofs); 210 ext->blk_addr = le32_to_cpu(i_ext.blk_addr); 211 ext->len = le32_to_cpu(i_ext.len); 212 write_unlock(&ext->ext_lock); 213 } 214 215 static inline void set_raw_extent(struct extent_info *ext, 216 struct f2fs_extent *i_ext) 217 { 218 read_lock(&ext->ext_lock); 219 i_ext->fofs = cpu_to_le32(ext->fofs); 220 i_ext->blk_addr = cpu_to_le32(ext->blk_addr); 221 i_ext->len = cpu_to_le32(ext->len); 222 read_unlock(&ext->ext_lock); 223 } 224 225 struct f2fs_nm_info { 226 block_t nat_blkaddr; /* base disk address of NAT */ 227 nid_t max_nid; /* maximum possible node ids */ 228 nid_t next_scan_nid; /* the next nid to be scanned */ 229 230 /* NAT cache management */ 231 struct radix_tree_root nat_root;/* root of the nat entry cache */ 232 rwlock_t nat_tree_lock; /* protect nat_tree_lock */ 233 unsigned int nat_cnt; /* the # of cached nat entries */ 234 struct list_head nat_entries; /* cached nat entry list (clean) */ 235 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ 236 237 /* free node ids management */ 238 struct list_head free_nid_list; /* a list for free nids */ 239 spinlock_t free_nid_list_lock; /* protect free nid list */ 240 unsigned int fcnt; /* the number of free node id */ 241 struct mutex build_lock; /* lock for build free nids */ 242 243 /* for checkpoint */ 244 char *nat_bitmap; /* NAT bitmap pointer */ 245 int bitmap_size; /* bitmap size */ 246 }; 247 248 /* 249 * this structure is used as one of function parameters. 250 * all the information are dedicated to a given direct node block determined 251 * by the data offset in a file. 252 */ 253 struct dnode_of_data { 254 struct inode *inode; /* vfs inode pointer */ 255 struct page *inode_page; /* its inode page, NULL is possible */ 256 struct page *node_page; /* cached direct node page */ 257 nid_t nid; /* node id of the direct node block */ 258 unsigned int ofs_in_node; /* data offset in the node page */ 259 bool inode_page_locked; /* inode page is locked or not */ 260 block_t data_blkaddr; /* block address of the node block */ 261 }; 262 263 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, 264 struct page *ipage, struct page *npage, nid_t nid) 265 { 266 memset(dn, 0, sizeof(*dn)); 267 dn->inode = inode; 268 dn->inode_page = ipage; 269 dn->node_page = npage; 270 dn->nid = nid; 271 } 272 273 /* 274 * For SIT manager 275 * 276 * By default, there are 6 active log areas across the whole main area. 277 * When considering hot and cold data separation to reduce cleaning overhead, 278 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, 279 * respectively. 280 * In the current design, you should not change the numbers intentionally. 281 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 282 * logs individually according to the underlying devices. (default: 6) 283 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for 284 * data and 8 for node logs. 285 */ 286 #define NR_CURSEG_DATA_TYPE (3) 287 #define NR_CURSEG_NODE_TYPE (3) 288 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) 289 290 enum { 291 CURSEG_HOT_DATA = 0, /* directory entry blocks */ 292 CURSEG_WARM_DATA, /* data blocks */ 293 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ 294 CURSEG_HOT_NODE, /* direct node blocks of directory files */ 295 CURSEG_WARM_NODE, /* direct node blocks of normal files */ 296 CURSEG_COLD_NODE, /* indirect node blocks */ 297 NO_CHECK_TYPE 298 }; 299 300 struct f2fs_sm_info { 301 struct sit_info *sit_info; /* whole segment information */ 302 struct free_segmap_info *free_info; /* free segment information */ 303 struct dirty_seglist_info *dirty_info; /* dirty segment information */ 304 struct curseg_info *curseg_array; /* active segment information */ 305 306 struct list_head wblist_head; /* list of under-writeback pages */ 307 spinlock_t wblist_lock; /* lock for checkpoint */ 308 309 block_t seg0_blkaddr; /* block address of 0'th segment */ 310 block_t main_blkaddr; /* start block address of main area */ 311 block_t ssa_blkaddr; /* start block address of SSA area */ 312 313 unsigned int segment_count; /* total # of segments */ 314 unsigned int main_segments; /* # of segments in main area */ 315 unsigned int reserved_segments; /* # of reserved segments */ 316 unsigned int ovp_segments; /* # of overprovision segments */ 317 318 /* a threshold to reclaim prefree segments */ 319 unsigned int rec_prefree_segments; 320 321 /* for small discard management */ 322 struct list_head discard_list; /* 4KB discard list */ 323 int nr_discards; /* # of discards in the list */ 324 int max_discards; /* max. discards to be issued */ 325 }; 326 327 /* 328 * For superblock 329 */ 330 /* 331 * COUNT_TYPE for monitoring 332 * 333 * f2fs monitors the number of several block types such as on-writeback, 334 * dirty dentry blocks, dirty node blocks, and dirty meta blocks. 335 */ 336 enum count_type { 337 F2FS_WRITEBACK, 338 F2FS_DIRTY_DENTS, 339 F2FS_DIRTY_NODES, 340 F2FS_DIRTY_META, 341 NR_COUNT_TYPE, 342 }; 343 344 /* 345 * The below are the page types of bios used in submti_bio(). 346 * The available types are: 347 * DATA User data pages. It operates as async mode. 348 * NODE Node pages. It operates as async mode. 349 * META FS metadata pages such as SIT, NAT, CP. 350 * NR_PAGE_TYPE The number of page types. 351 * META_FLUSH Make sure the previous pages are written 352 * with waiting the bio's completion 353 * ... Only can be used with META. 354 */ 355 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) 356 enum page_type { 357 DATA, 358 NODE, 359 META, 360 NR_PAGE_TYPE, 361 META_FLUSH, 362 }; 363 364 struct f2fs_bio_info { 365 struct bio *bio; /* bios to merge */ 366 sector_t last_block_in_bio; /* last block number */ 367 struct mutex io_mutex; /* mutex for bio */ 368 }; 369 370 struct f2fs_sb_info { 371 struct super_block *sb; /* pointer to VFS super block */ 372 struct proc_dir_entry *s_proc; /* proc entry */ 373 struct buffer_head *raw_super_buf; /* buffer head of raw sb */ 374 struct f2fs_super_block *raw_super; /* raw super block pointer */ 375 int s_dirty; /* dirty flag for checkpoint */ 376 377 /* for node-related operations */ 378 struct f2fs_nm_info *nm_info; /* node manager */ 379 struct inode *node_inode; /* cache node blocks */ 380 381 /* for segment-related operations */ 382 struct f2fs_sm_info *sm_info; /* segment manager */ 383 384 /* for bio operations */ 385 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ 386 387 /* for checkpoint */ 388 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ 389 struct inode *meta_inode; /* cache meta blocks */ 390 struct mutex cp_mutex; /* checkpoint procedure lock */ 391 struct rw_semaphore cp_rwsem; /* blocking FS operations */ 392 struct mutex node_write; /* locking node writes */ 393 struct mutex writepages; /* mutex for writepages() */ 394 bool por_doing; /* recovery is doing or not */ 395 bool on_build_free_nids; /* build_free_nids is doing */ 396 wait_queue_head_t cp_wait; 397 398 /* for orphan inode management */ 399 struct list_head orphan_inode_list; /* orphan inode list */ 400 struct mutex orphan_inode_mutex; /* for orphan inode list */ 401 unsigned int n_orphans; /* # of orphan inodes */ 402 403 /* for directory inode management */ 404 struct list_head dir_inode_list; /* dir inode list */ 405 spinlock_t dir_inode_lock; /* for dir inode list lock */ 406 407 /* basic file system units */ 408 unsigned int log_sectors_per_block; /* log2 sectors per block */ 409 unsigned int log_blocksize; /* log2 block size */ 410 unsigned int blocksize; /* block size */ 411 unsigned int root_ino_num; /* root inode number*/ 412 unsigned int node_ino_num; /* node inode number*/ 413 unsigned int meta_ino_num; /* meta inode number*/ 414 unsigned int log_blocks_per_seg; /* log2 blocks per segment */ 415 unsigned int blocks_per_seg; /* blocks per segment */ 416 unsigned int segs_per_sec; /* segments per section */ 417 unsigned int secs_per_zone; /* sections per zone */ 418 unsigned int total_sections; /* total section count */ 419 unsigned int total_node_count; /* total node block count */ 420 unsigned int total_valid_node_count; /* valid node block count */ 421 unsigned int total_valid_inode_count; /* valid inode count */ 422 int active_logs; /* # of active logs */ 423 424 block_t user_block_count; /* # of user blocks */ 425 block_t total_valid_block_count; /* # of valid blocks */ 426 block_t alloc_valid_block_count; /* # of allocated blocks */ 427 block_t last_valid_block_count; /* for recovery */ 428 u32 s_next_generation; /* for NFS support */ 429 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ 430 431 struct f2fs_mount_info mount_opt; /* mount options */ 432 433 /* for cleaning operations */ 434 struct mutex gc_mutex; /* mutex for GC */ 435 struct f2fs_gc_kthread *gc_thread; /* GC thread */ 436 unsigned int cur_victim_sec; /* current victim section num */ 437 438 /* 439 * for stat information. 440 * one is for the LFS mode, and the other is for the SSR mode. 441 */ 442 #ifdef CONFIG_F2FS_STAT_FS 443 struct f2fs_stat_info *stat_info; /* FS status information */ 444 unsigned int segment_count[2]; /* # of allocated segments */ 445 unsigned int block_count[2]; /* # of allocated blocks */ 446 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ 447 int bg_gc; /* background gc calls */ 448 unsigned int n_dirty_dirs; /* # of dir inodes */ 449 #endif 450 unsigned int last_victim[2]; /* last victim segment # */ 451 spinlock_t stat_lock; /* lock for stat operations */ 452 453 /* For sysfs suppport */ 454 struct kobject s_kobj; 455 struct completion s_kobj_unregister; 456 }; 457 458 /* 459 * Inline functions 460 */ 461 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) 462 { 463 return container_of(inode, struct f2fs_inode_info, vfs_inode); 464 } 465 466 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) 467 { 468 return sb->s_fs_info; 469 } 470 471 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) 472 { 473 return (struct f2fs_super_block *)(sbi->raw_super); 474 } 475 476 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) 477 { 478 return (struct f2fs_checkpoint *)(sbi->ckpt); 479 } 480 481 static inline struct f2fs_node *F2FS_NODE(struct page *page) 482 { 483 return (struct f2fs_node *)page_address(page); 484 } 485 486 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) 487 { 488 return (struct f2fs_nm_info *)(sbi->nm_info); 489 } 490 491 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) 492 { 493 return (struct f2fs_sm_info *)(sbi->sm_info); 494 } 495 496 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) 497 { 498 return (struct sit_info *)(SM_I(sbi)->sit_info); 499 } 500 501 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) 502 { 503 return (struct free_segmap_info *)(SM_I(sbi)->free_info); 504 } 505 506 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) 507 { 508 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); 509 } 510 511 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) 512 { 513 sbi->s_dirty = 1; 514 } 515 516 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) 517 { 518 sbi->s_dirty = 0; 519 } 520 521 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) 522 { 523 return le64_to_cpu(cp->checkpoint_ver); 524 } 525 526 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 527 { 528 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 529 return ckpt_flags & f; 530 } 531 532 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 533 { 534 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 535 ckpt_flags |= f; 536 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 537 } 538 539 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 540 { 541 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 542 ckpt_flags &= (~f); 543 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 544 } 545 546 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) 547 { 548 down_read(&sbi->cp_rwsem); 549 } 550 551 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) 552 { 553 up_read(&sbi->cp_rwsem); 554 } 555 556 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) 557 { 558 down_write_nest_lock(&sbi->cp_rwsem, &sbi->cp_mutex); 559 } 560 561 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) 562 { 563 up_write(&sbi->cp_rwsem); 564 } 565 566 /* 567 * Check whether the given nid is within node id range. 568 */ 569 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 570 { 571 WARN_ON((nid >= NM_I(sbi)->max_nid)); 572 if (nid >= NM_I(sbi)->max_nid) 573 return -EINVAL; 574 return 0; 575 } 576 577 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 578 579 /* 580 * Check whether the inode has blocks or not 581 */ 582 static inline int F2FS_HAS_BLOCKS(struct inode *inode) 583 { 584 if (F2FS_I(inode)->i_xattr_nid) 585 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); 586 else 587 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); 588 } 589 590 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, 591 struct inode *inode, blkcnt_t count) 592 { 593 block_t valid_block_count; 594 595 spin_lock(&sbi->stat_lock); 596 valid_block_count = 597 sbi->total_valid_block_count + (block_t)count; 598 if (valid_block_count > sbi->user_block_count) { 599 spin_unlock(&sbi->stat_lock); 600 return false; 601 } 602 inode->i_blocks += count; 603 sbi->total_valid_block_count = valid_block_count; 604 sbi->alloc_valid_block_count += (block_t)count; 605 spin_unlock(&sbi->stat_lock); 606 return true; 607 } 608 609 static inline int dec_valid_block_count(struct f2fs_sb_info *sbi, 610 struct inode *inode, 611 blkcnt_t count) 612 { 613 spin_lock(&sbi->stat_lock); 614 f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); 615 f2fs_bug_on(inode->i_blocks < count); 616 inode->i_blocks -= count; 617 sbi->total_valid_block_count -= (block_t)count; 618 spin_unlock(&sbi->stat_lock); 619 return 0; 620 } 621 622 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) 623 { 624 atomic_inc(&sbi->nr_pages[count_type]); 625 F2FS_SET_SB_DIRT(sbi); 626 } 627 628 static inline void inode_inc_dirty_dents(struct inode *inode) 629 { 630 atomic_inc(&F2FS_I(inode)->dirty_dents); 631 } 632 633 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) 634 { 635 atomic_dec(&sbi->nr_pages[count_type]); 636 } 637 638 static inline void inode_dec_dirty_dents(struct inode *inode) 639 { 640 atomic_dec(&F2FS_I(inode)->dirty_dents); 641 } 642 643 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) 644 { 645 return atomic_read(&sbi->nr_pages[count_type]); 646 } 647 648 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) 649 { 650 unsigned int pages_per_sec = sbi->segs_per_sec * 651 (1 << sbi->log_blocks_per_seg); 652 return ((get_pages(sbi, block_type) + pages_per_sec - 1) 653 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; 654 } 655 656 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) 657 { 658 block_t ret; 659 spin_lock(&sbi->stat_lock); 660 ret = sbi->total_valid_block_count; 661 spin_unlock(&sbi->stat_lock); 662 return ret; 663 } 664 665 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) 666 { 667 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 668 669 /* return NAT or SIT bitmap */ 670 if (flag == NAT_BITMAP) 671 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 672 else if (flag == SIT_BITMAP) 673 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 674 675 return 0; 676 } 677 678 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) 679 { 680 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 681 int offset = (flag == NAT_BITMAP) ? 682 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; 683 return &ckpt->sit_nat_version_bitmap + offset; 684 } 685 686 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) 687 { 688 block_t start_addr; 689 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 690 unsigned long long ckpt_version = cur_cp_version(ckpt); 691 692 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); 693 694 /* 695 * odd numbered checkpoint should at cp segment 0 696 * and even segent must be at cp segment 1 697 */ 698 if (!(ckpt_version & 1)) 699 start_addr += sbi->blocks_per_seg; 700 701 return start_addr; 702 } 703 704 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) 705 { 706 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); 707 } 708 709 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, 710 struct inode *inode, 711 unsigned int count) 712 { 713 block_t valid_block_count; 714 unsigned int valid_node_count; 715 716 spin_lock(&sbi->stat_lock); 717 718 valid_block_count = sbi->total_valid_block_count + (block_t)count; 719 sbi->alloc_valid_block_count += (block_t)count; 720 valid_node_count = sbi->total_valid_node_count + count; 721 722 if (valid_block_count > sbi->user_block_count) { 723 spin_unlock(&sbi->stat_lock); 724 return false; 725 } 726 727 if (valid_node_count > sbi->total_node_count) { 728 spin_unlock(&sbi->stat_lock); 729 return false; 730 } 731 732 if (inode) 733 inode->i_blocks += count; 734 sbi->total_valid_node_count = valid_node_count; 735 sbi->total_valid_block_count = valid_block_count; 736 spin_unlock(&sbi->stat_lock); 737 738 return true; 739 } 740 741 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, 742 struct inode *inode, 743 unsigned int count) 744 { 745 spin_lock(&sbi->stat_lock); 746 747 f2fs_bug_on(sbi->total_valid_block_count < count); 748 f2fs_bug_on(sbi->total_valid_node_count < count); 749 f2fs_bug_on(inode->i_blocks < count); 750 751 inode->i_blocks -= count; 752 sbi->total_valid_node_count -= count; 753 sbi->total_valid_block_count -= (block_t)count; 754 755 spin_unlock(&sbi->stat_lock); 756 } 757 758 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) 759 { 760 unsigned int ret; 761 spin_lock(&sbi->stat_lock); 762 ret = sbi->total_valid_node_count; 763 spin_unlock(&sbi->stat_lock); 764 return ret; 765 } 766 767 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) 768 { 769 spin_lock(&sbi->stat_lock); 770 f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); 771 sbi->total_valid_inode_count++; 772 spin_unlock(&sbi->stat_lock); 773 } 774 775 static inline int dec_valid_inode_count(struct f2fs_sb_info *sbi) 776 { 777 spin_lock(&sbi->stat_lock); 778 f2fs_bug_on(!sbi->total_valid_inode_count); 779 sbi->total_valid_inode_count--; 780 spin_unlock(&sbi->stat_lock); 781 return 0; 782 } 783 784 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) 785 { 786 unsigned int ret; 787 spin_lock(&sbi->stat_lock); 788 ret = sbi->total_valid_inode_count; 789 spin_unlock(&sbi->stat_lock); 790 return ret; 791 } 792 793 static inline void f2fs_put_page(struct page *page, int unlock) 794 { 795 if (!page || IS_ERR(page)) 796 return; 797 798 if (unlock) { 799 f2fs_bug_on(!PageLocked(page)); 800 unlock_page(page); 801 } 802 page_cache_release(page); 803 } 804 805 static inline void f2fs_put_dnode(struct dnode_of_data *dn) 806 { 807 if (dn->node_page) 808 f2fs_put_page(dn->node_page, 1); 809 if (dn->inode_page && dn->node_page != dn->inode_page) 810 f2fs_put_page(dn->inode_page, 0); 811 dn->node_page = NULL; 812 dn->inode_page = NULL; 813 } 814 815 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, 816 size_t size, void (*ctor)(void *)) 817 { 818 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor); 819 } 820 821 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, 822 gfp_t flags) 823 { 824 void *entry; 825 retry: 826 entry = kmem_cache_alloc(cachep, flags); 827 if (!entry) { 828 cond_resched(); 829 goto retry; 830 } 831 832 return entry; 833 } 834 835 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) 836 837 static inline bool IS_INODE(struct page *page) 838 { 839 struct f2fs_node *p = F2FS_NODE(page); 840 return RAW_IS_INODE(p); 841 } 842 843 static inline __le32 *blkaddr_in_node(struct f2fs_node *node) 844 { 845 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; 846 } 847 848 static inline block_t datablock_addr(struct page *node_page, 849 unsigned int offset) 850 { 851 struct f2fs_node *raw_node; 852 __le32 *addr_array; 853 raw_node = F2FS_NODE(node_page); 854 addr_array = blkaddr_in_node(raw_node); 855 return le32_to_cpu(addr_array[offset]); 856 } 857 858 static inline int f2fs_test_bit(unsigned int nr, char *addr) 859 { 860 int mask; 861 862 addr += (nr >> 3); 863 mask = 1 << (7 - (nr & 0x07)); 864 return mask & *addr; 865 } 866 867 static inline int f2fs_set_bit(unsigned int nr, char *addr) 868 { 869 int mask; 870 int ret; 871 872 addr += (nr >> 3); 873 mask = 1 << (7 - (nr & 0x07)); 874 ret = mask & *addr; 875 *addr |= mask; 876 return ret; 877 } 878 879 static inline int f2fs_clear_bit(unsigned int nr, char *addr) 880 { 881 int mask; 882 int ret; 883 884 addr += (nr >> 3); 885 mask = 1 << (7 - (nr & 0x07)); 886 ret = mask & *addr; 887 *addr &= ~mask; 888 return ret; 889 } 890 891 /* used for f2fs_inode_info->flags */ 892 enum { 893 FI_NEW_INODE, /* indicate newly allocated inode */ 894 FI_DIRTY_INODE, /* indicate inode is dirty or not */ 895 FI_INC_LINK, /* need to increment i_nlink */ 896 FI_ACL_MODE, /* indicate acl mode */ 897 FI_NO_ALLOC, /* should not allocate any blocks */ 898 FI_UPDATE_DIR, /* should update inode block for consistency */ 899 FI_DELAY_IPUT, /* used for the recovery */ 900 FI_NO_EXTENT, /* not to use the extent cache */ 901 FI_INLINE_XATTR, /* used for inline xattr */ 902 }; 903 904 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) 905 { 906 set_bit(flag, &fi->flags); 907 } 908 909 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) 910 { 911 return test_bit(flag, &fi->flags); 912 } 913 914 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) 915 { 916 clear_bit(flag, &fi->flags); 917 } 918 919 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) 920 { 921 fi->i_acl_mode = mode; 922 set_inode_flag(fi, FI_ACL_MODE); 923 } 924 925 static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) 926 { 927 if (is_inode_flag_set(fi, FI_ACL_MODE)) { 928 clear_inode_flag(fi, FI_ACL_MODE); 929 return 1; 930 } 931 return 0; 932 } 933 934 static inline void get_inline_info(struct f2fs_inode_info *fi, 935 struct f2fs_inode *ri) 936 { 937 if (ri->i_inline & F2FS_INLINE_XATTR) 938 set_inode_flag(fi, FI_INLINE_XATTR); 939 } 940 941 static inline void set_raw_inline(struct f2fs_inode_info *fi, 942 struct f2fs_inode *ri) 943 { 944 ri->i_inline = 0; 945 946 if (is_inode_flag_set(fi, FI_INLINE_XATTR)) 947 ri->i_inline |= F2FS_INLINE_XATTR; 948 } 949 950 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) 951 { 952 if (is_inode_flag_set(fi, FI_INLINE_XATTR)) 953 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; 954 return DEF_ADDRS_PER_INODE; 955 } 956 957 static inline void *inline_xattr_addr(struct page *page) 958 { 959 struct f2fs_inode *ri; 960 ri = (struct f2fs_inode *)page_address(page); 961 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - 962 F2FS_INLINE_XATTR_ADDRS]); 963 } 964 965 static inline int inline_xattr_size(struct inode *inode) 966 { 967 if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR)) 968 return F2FS_INLINE_XATTR_ADDRS << 2; 969 else 970 return 0; 971 } 972 973 static inline int f2fs_readonly(struct super_block *sb) 974 { 975 return sb->s_flags & MS_RDONLY; 976 } 977 978 /* 979 * file.c 980 */ 981 int f2fs_sync_file(struct file *, loff_t, loff_t, int); 982 void truncate_data_blocks(struct dnode_of_data *); 983 void f2fs_truncate(struct inode *); 984 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 985 int f2fs_setattr(struct dentry *, struct iattr *); 986 int truncate_hole(struct inode *, pgoff_t, pgoff_t); 987 int truncate_data_blocks_range(struct dnode_of_data *, int); 988 long f2fs_ioctl(struct file *, unsigned int, unsigned long); 989 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); 990 991 /* 992 * inode.c 993 */ 994 void f2fs_set_inode_flags(struct inode *); 995 struct inode *f2fs_iget(struct super_block *, unsigned long); 996 int try_to_free_nats(struct f2fs_sb_info *, int); 997 void update_inode(struct inode *, struct page *); 998 int update_inode_page(struct inode *); 999 int f2fs_write_inode(struct inode *, struct writeback_control *); 1000 void f2fs_evict_inode(struct inode *); 1001 1002 /* 1003 * namei.c 1004 */ 1005 struct dentry *f2fs_get_parent(struct dentry *child); 1006 1007 /* 1008 * dir.c 1009 */ 1010 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, 1011 struct page **); 1012 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); 1013 ino_t f2fs_inode_by_name(struct inode *, struct qstr *); 1014 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, 1015 struct page *, struct inode *); 1016 int update_dent_inode(struct inode *, const struct qstr *); 1017 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); 1018 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); 1019 int f2fs_make_empty(struct inode *, struct inode *); 1020 bool f2fs_empty_dir(struct inode *); 1021 1022 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) 1023 { 1024 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, 1025 inode); 1026 } 1027 1028 /* 1029 * super.c 1030 */ 1031 int f2fs_sync_fs(struct super_block *, int); 1032 extern __printf(3, 4) 1033 void f2fs_msg(struct super_block *, const char *, const char *, ...); 1034 1035 /* 1036 * hash.c 1037 */ 1038 f2fs_hash_t f2fs_dentry_hash(const char *, size_t); 1039 1040 /* 1041 * node.c 1042 */ 1043 struct dnode_of_data; 1044 struct node_info; 1045 1046 int is_checkpointed_node(struct f2fs_sb_info *, nid_t); 1047 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); 1048 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); 1049 int truncate_inode_blocks(struct inode *, pgoff_t); 1050 int truncate_xattr_node(struct inode *, struct page *); 1051 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); 1052 void remove_inode_page(struct inode *); 1053 struct page *new_inode_page(struct inode *, const struct qstr *); 1054 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); 1055 void ra_node_page(struct f2fs_sb_info *, nid_t); 1056 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); 1057 struct page *get_node_page_ra(struct page *, int); 1058 void sync_inode_page(struct dnode_of_data *); 1059 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); 1060 bool alloc_nid(struct f2fs_sb_info *, nid_t *); 1061 void alloc_nid_done(struct f2fs_sb_info *, nid_t); 1062 void alloc_nid_failed(struct f2fs_sb_info *, nid_t); 1063 void recover_node_page(struct f2fs_sb_info *, struct page *, 1064 struct f2fs_summary *, struct node_info *, block_t); 1065 int recover_inode_page(struct f2fs_sb_info *, struct page *); 1066 int restore_node_summary(struct f2fs_sb_info *, unsigned int, 1067 struct f2fs_summary_block *); 1068 void flush_nat_entries(struct f2fs_sb_info *); 1069 int build_node_manager(struct f2fs_sb_info *); 1070 void destroy_node_manager(struct f2fs_sb_info *); 1071 int __init create_node_manager_caches(void); 1072 void destroy_node_manager_caches(void); 1073 1074 /* 1075 * segment.c 1076 */ 1077 void f2fs_balance_fs(struct f2fs_sb_info *); 1078 void f2fs_balance_fs_bg(struct f2fs_sb_info *); 1079 void invalidate_blocks(struct f2fs_sb_info *, block_t); 1080 void clear_prefree_segments(struct f2fs_sb_info *); 1081 int npages_for_summary_flush(struct f2fs_sb_info *); 1082 void allocate_new_segments(struct f2fs_sb_info *); 1083 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); 1084 struct bio *f2fs_bio_alloc(struct block_device *, int); 1085 void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool); 1086 void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); 1087 void write_meta_page(struct f2fs_sb_info *, struct page *); 1088 void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int, 1089 block_t, block_t *); 1090 void write_data_page(struct inode *, struct page *, struct dnode_of_data*, 1091 block_t, block_t *); 1092 void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t); 1093 void recover_data_page(struct f2fs_sb_info *, struct page *, 1094 struct f2fs_summary *, block_t, block_t); 1095 void rewrite_node_page(struct f2fs_sb_info *, struct page *, 1096 struct f2fs_summary *, block_t, block_t); 1097 void write_data_summaries(struct f2fs_sb_info *, block_t); 1098 void write_node_summaries(struct f2fs_sb_info *, block_t); 1099 int lookup_journal_in_cursum(struct f2fs_summary_block *, 1100 int, unsigned int, int); 1101 void flush_sit_entries(struct f2fs_sb_info *); 1102 int build_segment_manager(struct f2fs_sb_info *); 1103 void destroy_segment_manager(struct f2fs_sb_info *); 1104 int __init create_segment_manager_caches(void); 1105 void destroy_segment_manager_caches(void); 1106 1107 /* 1108 * checkpoint.c 1109 */ 1110 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); 1111 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); 1112 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); 1113 int acquire_orphan_inode(struct f2fs_sb_info *); 1114 void release_orphan_inode(struct f2fs_sb_info *); 1115 void add_orphan_inode(struct f2fs_sb_info *, nid_t); 1116 void remove_orphan_inode(struct f2fs_sb_info *, nid_t); 1117 int recover_orphan_inodes(struct f2fs_sb_info *); 1118 int get_valid_checkpoint(struct f2fs_sb_info *); 1119 void set_dirty_dir_page(struct inode *, struct page *); 1120 void add_dirty_dir_inode(struct inode *); 1121 void remove_dirty_dir_inode(struct inode *); 1122 struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t); 1123 void sync_dirty_dir_inodes(struct f2fs_sb_info *); 1124 void write_checkpoint(struct f2fs_sb_info *, bool); 1125 void init_orphan_info(struct f2fs_sb_info *); 1126 int __init create_checkpoint_caches(void); 1127 void destroy_checkpoint_caches(void); 1128 1129 /* 1130 * data.c 1131 */ 1132 int reserve_new_block(struct dnode_of_data *); 1133 void update_extent_cache(block_t, struct dnode_of_data *); 1134 struct page *find_data_page(struct inode *, pgoff_t, bool); 1135 struct page *get_lock_data_page(struct inode *, pgoff_t); 1136 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); 1137 int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int); 1138 int do_write_data_page(struct page *); 1139 1140 /* 1141 * gc.c 1142 */ 1143 int start_gc_thread(struct f2fs_sb_info *); 1144 void stop_gc_thread(struct f2fs_sb_info *); 1145 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); 1146 int f2fs_gc(struct f2fs_sb_info *); 1147 void build_gc_manager(struct f2fs_sb_info *); 1148 int __init create_gc_caches(void); 1149 void destroy_gc_caches(void); 1150 1151 /* 1152 * recovery.c 1153 */ 1154 int recover_fsync_data(struct f2fs_sb_info *); 1155 bool space_for_roll_forward(struct f2fs_sb_info *); 1156 1157 /* 1158 * debug.c 1159 */ 1160 #ifdef CONFIG_F2FS_STAT_FS 1161 struct f2fs_stat_info { 1162 struct list_head stat_list; 1163 struct f2fs_sb_info *sbi; 1164 struct mutex stat_lock; 1165 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; 1166 int main_area_segs, main_area_sections, main_area_zones; 1167 int hit_ext, total_ext; 1168 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; 1169 int nats, sits, fnids; 1170 int total_count, utilization; 1171 int bg_gc; 1172 unsigned int valid_count, valid_node_count, valid_inode_count; 1173 unsigned int bimodal, avg_vblocks; 1174 int util_free, util_valid, util_invalid; 1175 int rsvd_segs, overp_segs; 1176 int dirty_count, node_pages, meta_pages; 1177 int prefree_count, call_count; 1178 int tot_segs, node_segs, data_segs, free_segs, free_secs; 1179 int tot_blks, data_blks, node_blks; 1180 int curseg[NR_CURSEG_TYPE]; 1181 int cursec[NR_CURSEG_TYPE]; 1182 int curzone[NR_CURSEG_TYPE]; 1183 1184 unsigned int segment_count[2]; 1185 unsigned int block_count[2]; 1186 unsigned base_mem, cache_mem; 1187 }; 1188 1189 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) 1190 { 1191 return (struct f2fs_stat_info*)sbi->stat_info; 1192 } 1193 1194 #define stat_inc_call_count(si) ((si)->call_count++) 1195 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) 1196 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) 1197 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) 1198 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) 1199 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) 1200 #define stat_inc_seg_type(sbi, curseg) \ 1201 ((sbi)->segment_count[(curseg)->alloc_type]++) 1202 #define stat_inc_block_count(sbi, curseg) \ 1203 ((sbi)->block_count[(curseg)->alloc_type]++) 1204 1205 #define stat_inc_seg_count(sbi, type) \ 1206 do { \ 1207 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1208 (si)->tot_segs++; \ 1209 if (type == SUM_TYPE_DATA) \ 1210 si->data_segs++; \ 1211 else \ 1212 si->node_segs++; \ 1213 } while (0) 1214 1215 #define stat_inc_tot_blk_count(si, blks) \ 1216 (si->tot_blks += (blks)) 1217 1218 #define stat_inc_data_blk_count(sbi, blks) \ 1219 do { \ 1220 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1221 stat_inc_tot_blk_count(si, blks); \ 1222 si->data_blks += (blks); \ 1223 } while (0) 1224 1225 #define stat_inc_node_blk_count(sbi, blks) \ 1226 do { \ 1227 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1228 stat_inc_tot_blk_count(si, blks); \ 1229 si->node_blks += (blks); \ 1230 } while (0) 1231 1232 int f2fs_build_stats(struct f2fs_sb_info *); 1233 void f2fs_destroy_stats(struct f2fs_sb_info *); 1234 void __init f2fs_create_root_stats(void); 1235 void f2fs_destroy_root_stats(void); 1236 #else 1237 #define stat_inc_call_count(si) 1238 #define stat_inc_bggc_count(si) 1239 #define stat_inc_dirty_dir(sbi) 1240 #define stat_dec_dirty_dir(sbi) 1241 #define stat_inc_total_hit(sb) 1242 #define stat_inc_read_hit(sb) 1243 #define stat_inc_seg_type(sbi, curseg) 1244 #define stat_inc_block_count(sbi, curseg) 1245 #define stat_inc_seg_count(si, type) 1246 #define stat_inc_tot_blk_count(si, blks) 1247 #define stat_inc_data_blk_count(si, blks) 1248 #define stat_inc_node_blk_count(sbi, blks) 1249 1250 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } 1251 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } 1252 static inline void __init f2fs_create_root_stats(void) { } 1253 static inline void f2fs_destroy_root_stats(void) { } 1254 #endif 1255 1256 extern const struct file_operations f2fs_dir_operations; 1257 extern const struct file_operations f2fs_file_operations; 1258 extern const struct inode_operations f2fs_file_inode_operations; 1259 extern const struct address_space_operations f2fs_dblock_aops; 1260 extern const struct address_space_operations f2fs_node_aops; 1261 extern const struct address_space_operations f2fs_meta_aops; 1262 extern const struct inode_operations f2fs_dir_inode_operations; 1263 extern const struct inode_operations f2fs_symlink_inode_operations; 1264 extern const struct inode_operations f2fs_special_inode_operations; 1265 #endif 1266