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_bio_info { 368 struct bio *bio; /* bios to merge */ 369 sector_t last_block_in_bio; /* last block number */ 370 struct mutex io_mutex; /* mutex for bio */ 371 }; 372 373 struct f2fs_sb_info { 374 struct super_block *sb; /* pointer to VFS super block */ 375 struct proc_dir_entry *s_proc; /* proc entry */ 376 struct buffer_head *raw_super_buf; /* buffer head of raw sb */ 377 struct f2fs_super_block *raw_super; /* raw super block pointer */ 378 int s_dirty; /* dirty flag for checkpoint */ 379 380 /* for node-related operations */ 381 struct f2fs_nm_info *nm_info; /* node manager */ 382 struct inode *node_inode; /* cache node blocks */ 383 384 /* for segment-related operations */ 385 struct f2fs_sm_info *sm_info; /* segment manager */ 386 387 /* for bio operations */ 388 struct f2fs_bio_info read_io; /* for read bios */ 389 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ 390 391 /* for checkpoint */ 392 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ 393 struct inode *meta_inode; /* cache meta blocks */ 394 struct mutex cp_mutex; /* checkpoint procedure lock */ 395 struct rw_semaphore cp_rwsem; /* blocking FS operations */ 396 struct mutex node_write; /* locking node writes */ 397 struct mutex writepages; /* mutex for writepages() */ 398 bool por_doing; /* recovery is doing or not */ 399 bool on_build_free_nids; /* build_free_nids is doing */ 400 wait_queue_head_t cp_wait; 401 402 /* for orphan inode management */ 403 struct list_head orphan_inode_list; /* orphan inode list */ 404 struct mutex orphan_inode_mutex; /* for orphan inode list */ 405 unsigned int n_orphans; /* # of orphan inodes */ 406 407 /* for directory inode management */ 408 struct list_head dir_inode_list; /* dir inode list */ 409 spinlock_t dir_inode_lock; /* for dir inode list lock */ 410 411 /* basic file system units */ 412 unsigned int log_sectors_per_block; /* log2 sectors per block */ 413 unsigned int log_blocksize; /* log2 block size */ 414 unsigned int blocksize; /* block size */ 415 unsigned int root_ino_num; /* root inode number*/ 416 unsigned int node_ino_num; /* node inode number*/ 417 unsigned int meta_ino_num; /* meta inode number*/ 418 unsigned int log_blocks_per_seg; /* log2 blocks per segment */ 419 unsigned int blocks_per_seg; /* blocks per segment */ 420 unsigned int segs_per_sec; /* segments per section */ 421 unsigned int secs_per_zone; /* sections per zone */ 422 unsigned int total_sections; /* total section count */ 423 unsigned int total_node_count; /* total node block count */ 424 unsigned int total_valid_node_count; /* valid node block count */ 425 unsigned int total_valid_inode_count; /* valid inode count */ 426 int active_logs; /* # of active logs */ 427 428 block_t user_block_count; /* # of user blocks */ 429 block_t total_valid_block_count; /* # of valid blocks */ 430 block_t alloc_valid_block_count; /* # of allocated blocks */ 431 block_t last_valid_block_count; /* for recovery */ 432 u32 s_next_generation; /* for NFS support */ 433 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ 434 435 struct f2fs_mount_info mount_opt; /* mount options */ 436 437 /* for cleaning operations */ 438 struct mutex gc_mutex; /* mutex for GC */ 439 struct f2fs_gc_kthread *gc_thread; /* GC thread */ 440 unsigned int cur_victim_sec; /* current victim section num */ 441 442 /* 443 * for stat information. 444 * one is for the LFS mode, and the other is for the SSR mode. 445 */ 446 #ifdef CONFIG_F2FS_STAT_FS 447 struct f2fs_stat_info *stat_info; /* FS status information */ 448 unsigned int segment_count[2]; /* # of allocated segments */ 449 unsigned int block_count[2]; /* # of allocated blocks */ 450 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ 451 int bg_gc; /* background gc calls */ 452 unsigned int n_dirty_dirs; /* # of dir inodes */ 453 #endif 454 unsigned int last_victim[2]; /* last victim segment # */ 455 spinlock_t stat_lock; /* lock for stat operations */ 456 457 /* For sysfs suppport */ 458 struct kobject s_kobj; 459 struct completion s_kobj_unregister; 460 }; 461 462 /* 463 * Inline functions 464 */ 465 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) 466 { 467 return container_of(inode, struct f2fs_inode_info, vfs_inode); 468 } 469 470 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) 471 { 472 return sb->s_fs_info; 473 } 474 475 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) 476 { 477 return (struct f2fs_super_block *)(sbi->raw_super); 478 } 479 480 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) 481 { 482 return (struct f2fs_checkpoint *)(sbi->ckpt); 483 } 484 485 static inline struct f2fs_node *F2FS_NODE(struct page *page) 486 { 487 return (struct f2fs_node *)page_address(page); 488 } 489 490 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) 491 { 492 return (struct f2fs_nm_info *)(sbi->nm_info); 493 } 494 495 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) 496 { 497 return (struct f2fs_sm_info *)(sbi->sm_info); 498 } 499 500 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) 501 { 502 return (struct sit_info *)(SM_I(sbi)->sit_info); 503 } 504 505 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) 506 { 507 return (struct free_segmap_info *)(SM_I(sbi)->free_info); 508 } 509 510 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) 511 { 512 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); 513 } 514 515 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) 516 { 517 sbi->s_dirty = 1; 518 } 519 520 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) 521 { 522 sbi->s_dirty = 0; 523 } 524 525 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) 526 { 527 return le64_to_cpu(cp->checkpoint_ver); 528 } 529 530 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 531 { 532 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 533 return ckpt_flags & f; 534 } 535 536 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 537 { 538 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 539 ckpt_flags |= f; 540 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 541 } 542 543 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 544 { 545 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 546 ckpt_flags &= (~f); 547 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 548 } 549 550 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) 551 { 552 down_read(&sbi->cp_rwsem); 553 } 554 555 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) 556 { 557 up_read(&sbi->cp_rwsem); 558 } 559 560 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) 561 { 562 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); 563 } 564 565 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) 566 { 567 up_write(&sbi->cp_rwsem); 568 } 569 570 /* 571 * Check whether the given nid is within node id range. 572 */ 573 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 574 { 575 WARN_ON((nid >= NM_I(sbi)->max_nid)); 576 if (nid >= NM_I(sbi)->max_nid) 577 return -EINVAL; 578 return 0; 579 } 580 581 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 582 583 /* 584 * Check whether the inode has blocks or not 585 */ 586 static inline int F2FS_HAS_BLOCKS(struct inode *inode) 587 { 588 if (F2FS_I(inode)->i_xattr_nid) 589 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); 590 else 591 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); 592 } 593 594 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, 595 struct inode *inode, blkcnt_t count) 596 { 597 block_t valid_block_count; 598 599 spin_lock(&sbi->stat_lock); 600 valid_block_count = 601 sbi->total_valid_block_count + (block_t)count; 602 if (valid_block_count > sbi->user_block_count) { 603 spin_unlock(&sbi->stat_lock); 604 return false; 605 } 606 inode->i_blocks += count; 607 sbi->total_valid_block_count = valid_block_count; 608 sbi->alloc_valid_block_count += (block_t)count; 609 spin_unlock(&sbi->stat_lock); 610 return true; 611 } 612 613 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, 614 struct inode *inode, 615 blkcnt_t count) 616 { 617 spin_lock(&sbi->stat_lock); 618 f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); 619 f2fs_bug_on(inode->i_blocks < count); 620 inode->i_blocks -= count; 621 sbi->total_valid_block_count -= (block_t)count; 622 spin_unlock(&sbi->stat_lock); 623 } 624 625 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) 626 { 627 atomic_inc(&sbi->nr_pages[count_type]); 628 F2FS_SET_SB_DIRT(sbi); 629 } 630 631 static inline void inode_inc_dirty_dents(struct inode *inode) 632 { 633 atomic_inc(&F2FS_I(inode)->dirty_dents); 634 } 635 636 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) 637 { 638 atomic_dec(&sbi->nr_pages[count_type]); 639 } 640 641 static inline void inode_dec_dirty_dents(struct inode *inode) 642 { 643 atomic_dec(&F2FS_I(inode)->dirty_dents); 644 } 645 646 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) 647 { 648 return atomic_read(&sbi->nr_pages[count_type]); 649 } 650 651 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) 652 { 653 unsigned int pages_per_sec = sbi->segs_per_sec * 654 (1 << sbi->log_blocks_per_seg); 655 return ((get_pages(sbi, block_type) + pages_per_sec - 1) 656 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; 657 } 658 659 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) 660 { 661 block_t ret; 662 spin_lock(&sbi->stat_lock); 663 ret = sbi->total_valid_block_count; 664 spin_unlock(&sbi->stat_lock); 665 return ret; 666 } 667 668 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) 669 { 670 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 671 672 /* return NAT or SIT bitmap */ 673 if (flag == NAT_BITMAP) 674 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 675 else if (flag == SIT_BITMAP) 676 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 677 678 return 0; 679 } 680 681 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) 682 { 683 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 684 int offset = (flag == NAT_BITMAP) ? 685 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; 686 return &ckpt->sit_nat_version_bitmap + offset; 687 } 688 689 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) 690 { 691 block_t start_addr; 692 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 693 unsigned long long ckpt_version = cur_cp_version(ckpt); 694 695 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); 696 697 /* 698 * odd numbered checkpoint should at cp segment 0 699 * and even segent must be at cp segment 1 700 */ 701 if (!(ckpt_version & 1)) 702 start_addr += sbi->blocks_per_seg; 703 704 return start_addr; 705 } 706 707 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) 708 { 709 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); 710 } 711 712 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, 713 struct inode *inode) 714 { 715 block_t valid_block_count; 716 unsigned int valid_node_count; 717 718 spin_lock(&sbi->stat_lock); 719 720 valid_block_count = sbi->total_valid_block_count + 1; 721 if (valid_block_count > sbi->user_block_count) { 722 spin_unlock(&sbi->stat_lock); 723 return false; 724 } 725 726 valid_node_count = sbi->total_valid_node_count + 1; 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++; 734 735 sbi->alloc_valid_block_count++; 736 sbi->total_valid_node_count++; 737 sbi->total_valid_block_count++; 738 spin_unlock(&sbi->stat_lock); 739 740 return true; 741 } 742 743 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, 744 struct inode *inode) 745 { 746 spin_lock(&sbi->stat_lock); 747 748 f2fs_bug_on(!sbi->total_valid_block_count); 749 f2fs_bug_on(!sbi->total_valid_node_count); 750 f2fs_bug_on(!inode->i_blocks); 751 752 inode->i_blocks--; 753 sbi->total_valid_node_count--; 754 sbi->total_valid_block_count--; 755 756 spin_unlock(&sbi->stat_lock); 757 } 758 759 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) 760 { 761 unsigned int ret; 762 spin_lock(&sbi->stat_lock); 763 ret = sbi->total_valid_node_count; 764 spin_unlock(&sbi->stat_lock); 765 return ret; 766 } 767 768 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) 769 { 770 spin_lock(&sbi->stat_lock); 771 f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); 772 sbi->total_valid_inode_count++; 773 spin_unlock(&sbi->stat_lock); 774 } 775 776 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) 777 { 778 spin_lock(&sbi->stat_lock); 779 f2fs_bug_on(!sbi->total_valid_inode_count); 780 sbi->total_valid_inode_count--; 781 spin_unlock(&sbi->stat_lock); 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 FI_INLINE_DATA, /* used for inline data*/ 903 }; 904 905 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) 906 { 907 set_bit(flag, &fi->flags); 908 } 909 910 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) 911 { 912 return test_bit(flag, &fi->flags); 913 } 914 915 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) 916 { 917 clear_bit(flag, &fi->flags); 918 } 919 920 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) 921 { 922 fi->i_acl_mode = mode; 923 set_inode_flag(fi, FI_ACL_MODE); 924 } 925 926 static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) 927 { 928 if (is_inode_flag_set(fi, FI_ACL_MODE)) { 929 clear_inode_flag(fi, FI_ACL_MODE); 930 return 1; 931 } 932 return 0; 933 } 934 935 static inline void get_inline_info(struct f2fs_inode_info *fi, 936 struct f2fs_inode *ri) 937 { 938 if (ri->i_inline & F2FS_INLINE_XATTR) 939 set_inode_flag(fi, FI_INLINE_XATTR); 940 if (ri->i_inline & F2FS_INLINE_DATA) 941 set_inode_flag(fi, FI_INLINE_DATA); 942 } 943 944 static inline void set_raw_inline(struct f2fs_inode_info *fi, 945 struct f2fs_inode *ri) 946 { 947 ri->i_inline = 0; 948 949 if (is_inode_flag_set(fi, FI_INLINE_XATTR)) 950 ri->i_inline |= F2FS_INLINE_XATTR; 951 if (is_inode_flag_set(fi, FI_INLINE_DATA)) 952 ri->i_inline |= F2FS_INLINE_DATA; 953 } 954 955 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) 956 { 957 if (is_inode_flag_set(fi, FI_INLINE_XATTR)) 958 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; 959 return DEF_ADDRS_PER_INODE; 960 } 961 962 static inline void *inline_xattr_addr(struct page *page) 963 { 964 struct f2fs_inode *ri; 965 ri = (struct f2fs_inode *)page_address(page); 966 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - 967 F2FS_INLINE_XATTR_ADDRS]); 968 } 969 970 static inline int inline_xattr_size(struct inode *inode) 971 { 972 if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR)) 973 return F2FS_INLINE_XATTR_ADDRS << 2; 974 else 975 return 0; 976 } 977 978 static inline void *inline_data_addr(struct page *page) 979 { 980 struct f2fs_inode *ri; 981 ri = (struct f2fs_inode *)page_address(page); 982 return (void *)&(ri->i_addr[1]); 983 } 984 985 static inline int f2fs_readonly(struct super_block *sb) 986 { 987 return sb->s_flags & MS_RDONLY; 988 } 989 990 /* 991 * file.c 992 */ 993 int f2fs_sync_file(struct file *, loff_t, loff_t, int); 994 void truncate_data_blocks(struct dnode_of_data *); 995 void f2fs_truncate(struct inode *); 996 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 997 int f2fs_setattr(struct dentry *, struct iattr *); 998 int truncate_hole(struct inode *, pgoff_t, pgoff_t); 999 int truncate_data_blocks_range(struct dnode_of_data *, int); 1000 long f2fs_ioctl(struct file *, unsigned int, unsigned long); 1001 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); 1002 1003 /* 1004 * inode.c 1005 */ 1006 void f2fs_set_inode_flags(struct inode *); 1007 struct inode *f2fs_iget(struct super_block *, unsigned long); 1008 int try_to_free_nats(struct f2fs_sb_info *, int); 1009 void update_inode(struct inode *, struct page *); 1010 int update_inode_page(struct inode *); 1011 int f2fs_write_inode(struct inode *, struct writeback_control *); 1012 void f2fs_evict_inode(struct inode *); 1013 1014 /* 1015 * namei.c 1016 */ 1017 struct dentry *f2fs_get_parent(struct dentry *child); 1018 1019 /* 1020 * dir.c 1021 */ 1022 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, 1023 struct page **); 1024 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); 1025 ino_t f2fs_inode_by_name(struct inode *, struct qstr *); 1026 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, 1027 struct page *, struct inode *); 1028 int update_dent_inode(struct inode *, const struct qstr *); 1029 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); 1030 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); 1031 int f2fs_make_empty(struct inode *, struct inode *); 1032 bool f2fs_empty_dir(struct inode *); 1033 1034 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) 1035 { 1036 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, 1037 inode); 1038 } 1039 1040 /* 1041 * super.c 1042 */ 1043 int f2fs_sync_fs(struct super_block *, int); 1044 extern __printf(3, 4) 1045 void f2fs_msg(struct super_block *, const char *, const char *, ...); 1046 1047 /* 1048 * hash.c 1049 */ 1050 f2fs_hash_t f2fs_dentry_hash(const char *, size_t); 1051 1052 /* 1053 * node.c 1054 */ 1055 struct dnode_of_data; 1056 struct node_info; 1057 1058 int is_checkpointed_node(struct f2fs_sb_info *, nid_t); 1059 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); 1060 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); 1061 int truncate_inode_blocks(struct inode *, pgoff_t); 1062 int truncate_xattr_node(struct inode *, struct page *); 1063 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); 1064 void remove_inode_page(struct inode *); 1065 struct page *new_inode_page(struct inode *, const struct qstr *); 1066 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); 1067 void ra_node_page(struct f2fs_sb_info *, nid_t); 1068 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); 1069 struct page *get_node_page_ra(struct page *, int); 1070 void sync_inode_page(struct dnode_of_data *); 1071 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); 1072 bool alloc_nid(struct f2fs_sb_info *, nid_t *); 1073 void alloc_nid_done(struct f2fs_sb_info *, nid_t); 1074 void alloc_nid_failed(struct f2fs_sb_info *, nid_t); 1075 void recover_node_page(struct f2fs_sb_info *, struct page *, 1076 struct f2fs_summary *, struct node_info *, block_t); 1077 int recover_inode_page(struct f2fs_sb_info *, struct page *); 1078 int restore_node_summary(struct f2fs_sb_info *, unsigned int, 1079 struct f2fs_summary_block *); 1080 void flush_nat_entries(struct f2fs_sb_info *); 1081 int build_node_manager(struct f2fs_sb_info *); 1082 void destroy_node_manager(struct f2fs_sb_info *); 1083 int __init create_node_manager_caches(void); 1084 void destroy_node_manager_caches(void); 1085 1086 /* 1087 * segment.c 1088 */ 1089 void f2fs_balance_fs(struct f2fs_sb_info *); 1090 void f2fs_balance_fs_bg(struct f2fs_sb_info *); 1091 void invalidate_blocks(struct f2fs_sb_info *, block_t); 1092 void clear_prefree_segments(struct f2fs_sb_info *); 1093 int npages_for_summary_flush(struct f2fs_sb_info *); 1094 void allocate_new_segments(struct f2fs_sb_info *); 1095 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); 1096 struct bio *f2fs_bio_alloc(struct block_device *, int); 1097 void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool); 1098 void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); 1099 void write_meta_page(struct f2fs_sb_info *, struct page *); 1100 void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int, 1101 block_t, block_t *); 1102 void write_data_page(struct inode *, struct page *, struct dnode_of_data*, 1103 block_t, block_t *); 1104 void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t); 1105 void recover_data_page(struct f2fs_sb_info *, struct page *, 1106 struct f2fs_summary *, block_t, block_t); 1107 void rewrite_node_page(struct f2fs_sb_info *, struct page *, 1108 struct f2fs_summary *, block_t, block_t); 1109 void write_data_summaries(struct f2fs_sb_info *, block_t); 1110 void write_node_summaries(struct f2fs_sb_info *, block_t); 1111 int lookup_journal_in_cursum(struct f2fs_summary_block *, 1112 int, unsigned int, int); 1113 void flush_sit_entries(struct f2fs_sb_info *); 1114 int build_segment_manager(struct f2fs_sb_info *); 1115 void destroy_segment_manager(struct f2fs_sb_info *); 1116 int __init create_segment_manager_caches(void); 1117 void destroy_segment_manager_caches(void); 1118 1119 /* 1120 * checkpoint.c 1121 */ 1122 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); 1123 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); 1124 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); 1125 int acquire_orphan_inode(struct f2fs_sb_info *); 1126 void release_orphan_inode(struct f2fs_sb_info *); 1127 void add_orphan_inode(struct f2fs_sb_info *, nid_t); 1128 void remove_orphan_inode(struct f2fs_sb_info *, nid_t); 1129 int recover_orphan_inodes(struct f2fs_sb_info *); 1130 int get_valid_checkpoint(struct f2fs_sb_info *); 1131 void set_dirty_dir_page(struct inode *, struct page *); 1132 void add_dirty_dir_inode(struct inode *); 1133 void remove_dirty_dir_inode(struct inode *); 1134 struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t); 1135 void sync_dirty_dir_inodes(struct f2fs_sb_info *); 1136 void write_checkpoint(struct f2fs_sb_info *, bool); 1137 void init_orphan_info(struct f2fs_sb_info *); 1138 int __init create_checkpoint_caches(void); 1139 void destroy_checkpoint_caches(void); 1140 1141 /* 1142 * data.c 1143 */ 1144 int reserve_new_block(struct dnode_of_data *); 1145 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); 1146 void update_extent_cache(block_t, struct dnode_of_data *); 1147 struct page *find_data_page(struct inode *, pgoff_t, bool); 1148 struct page *get_lock_data_page(struct inode *, pgoff_t); 1149 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); 1150 int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int); 1151 void f2fs_submit_read_bio(struct f2fs_sb_info *, int); 1152 void submit_read_page(struct f2fs_sb_info *, struct page *, block_t, int); 1153 int do_write_data_page(struct page *); 1154 1155 /* 1156 * gc.c 1157 */ 1158 int start_gc_thread(struct f2fs_sb_info *); 1159 void stop_gc_thread(struct f2fs_sb_info *); 1160 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); 1161 int f2fs_gc(struct f2fs_sb_info *); 1162 void build_gc_manager(struct f2fs_sb_info *); 1163 int __init create_gc_caches(void); 1164 void destroy_gc_caches(void); 1165 1166 /* 1167 * recovery.c 1168 */ 1169 int recover_fsync_data(struct f2fs_sb_info *); 1170 bool space_for_roll_forward(struct f2fs_sb_info *); 1171 1172 /* 1173 * debug.c 1174 */ 1175 #ifdef CONFIG_F2FS_STAT_FS 1176 struct f2fs_stat_info { 1177 struct list_head stat_list; 1178 struct f2fs_sb_info *sbi; 1179 struct mutex stat_lock; 1180 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; 1181 int main_area_segs, main_area_sections, main_area_zones; 1182 int hit_ext, total_ext; 1183 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; 1184 int nats, sits, fnids; 1185 int total_count, utilization; 1186 int bg_gc; 1187 unsigned int valid_count, valid_node_count, valid_inode_count; 1188 unsigned int bimodal, avg_vblocks; 1189 int util_free, util_valid, util_invalid; 1190 int rsvd_segs, overp_segs; 1191 int dirty_count, node_pages, meta_pages; 1192 int prefree_count, call_count; 1193 int tot_segs, node_segs, data_segs, free_segs, free_secs; 1194 int tot_blks, data_blks, node_blks; 1195 int curseg[NR_CURSEG_TYPE]; 1196 int cursec[NR_CURSEG_TYPE]; 1197 int curzone[NR_CURSEG_TYPE]; 1198 1199 unsigned int segment_count[2]; 1200 unsigned int block_count[2]; 1201 unsigned base_mem, cache_mem; 1202 }; 1203 1204 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) 1205 { 1206 return (struct f2fs_stat_info*)sbi->stat_info; 1207 } 1208 1209 #define stat_inc_call_count(si) ((si)->call_count++) 1210 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) 1211 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) 1212 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) 1213 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) 1214 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) 1215 #define stat_inc_seg_type(sbi, curseg) \ 1216 ((sbi)->segment_count[(curseg)->alloc_type]++) 1217 #define stat_inc_block_count(sbi, curseg) \ 1218 ((sbi)->block_count[(curseg)->alloc_type]++) 1219 1220 #define stat_inc_seg_count(sbi, type) \ 1221 do { \ 1222 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1223 (si)->tot_segs++; \ 1224 if (type == SUM_TYPE_DATA) \ 1225 si->data_segs++; \ 1226 else \ 1227 si->node_segs++; \ 1228 } while (0) 1229 1230 #define stat_inc_tot_blk_count(si, blks) \ 1231 (si->tot_blks += (blks)) 1232 1233 #define stat_inc_data_blk_count(sbi, blks) \ 1234 do { \ 1235 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1236 stat_inc_tot_blk_count(si, blks); \ 1237 si->data_blks += (blks); \ 1238 } while (0) 1239 1240 #define stat_inc_node_blk_count(sbi, blks) \ 1241 do { \ 1242 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1243 stat_inc_tot_blk_count(si, blks); \ 1244 si->node_blks += (blks); \ 1245 } while (0) 1246 1247 int f2fs_build_stats(struct f2fs_sb_info *); 1248 void f2fs_destroy_stats(struct f2fs_sb_info *); 1249 void __init f2fs_create_root_stats(void); 1250 void f2fs_destroy_root_stats(void); 1251 #else 1252 #define stat_inc_call_count(si) 1253 #define stat_inc_bggc_count(si) 1254 #define stat_inc_dirty_dir(sbi) 1255 #define stat_dec_dirty_dir(sbi) 1256 #define stat_inc_total_hit(sb) 1257 #define stat_inc_read_hit(sb) 1258 #define stat_inc_seg_type(sbi, curseg) 1259 #define stat_inc_block_count(sbi, curseg) 1260 #define stat_inc_seg_count(si, type) 1261 #define stat_inc_tot_blk_count(si, blks) 1262 #define stat_inc_data_blk_count(si, blks) 1263 #define stat_inc_node_blk_count(sbi, blks) 1264 1265 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } 1266 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } 1267 static inline void __init f2fs_create_root_stats(void) { } 1268 static inline void f2fs_destroy_root_stats(void) { } 1269 #endif 1270 1271 extern const struct file_operations f2fs_dir_operations; 1272 extern const struct file_operations f2fs_file_operations; 1273 extern const struct inode_operations f2fs_file_inode_operations; 1274 extern const struct address_space_operations f2fs_dblock_aops; 1275 extern const struct address_space_operations f2fs_node_aops; 1276 extern const struct address_space_operations f2fs_meta_aops; 1277 extern const struct inode_operations f2fs_dir_inode_operations; 1278 extern const struct inode_operations f2fs_symlink_inode_operations; 1279 extern const struct inode_operations f2fs_special_inode_operations; 1280 1281 #endif 1282