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 43 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) 44 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) 45 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) 46 47 #define ver_after(a, b) (typecheck(unsigned long long, a) && \ 48 typecheck(unsigned long long, b) && \ 49 ((long long)((a) - (b)) > 0)) 50 51 typedef u32 block_t; /* 52 * should not change u32, since it is the on-disk block 53 * address format, __le32. 54 */ 55 typedef u32 nid_t; 56 57 struct f2fs_mount_info { 58 unsigned int opt; 59 }; 60 61 #define CRCPOLY_LE 0xedb88320 62 63 static inline __u32 f2fs_crc32(void *buf, size_t len) 64 { 65 unsigned char *p = (unsigned char *)buf; 66 __u32 crc = F2FS_SUPER_MAGIC; 67 int i; 68 69 while (len--) { 70 crc ^= *p++; 71 for (i = 0; i < 8; i++) 72 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); 73 } 74 return crc; 75 } 76 77 static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) 78 { 79 return f2fs_crc32(buf, buf_size) == blk_crc; 80 } 81 82 /* 83 * For checkpoint manager 84 */ 85 enum { 86 NAT_BITMAP, 87 SIT_BITMAP 88 }; 89 90 /* for the list of orphan inodes */ 91 struct orphan_inode_entry { 92 struct list_head list; /* list head */ 93 nid_t ino; /* inode number */ 94 }; 95 96 /* for the list of directory inodes */ 97 struct dir_inode_entry { 98 struct list_head list; /* list head */ 99 struct inode *inode; /* vfs inode pointer */ 100 }; 101 102 /* for the list of blockaddresses to be discarded */ 103 struct discard_entry { 104 struct list_head list; /* list head */ 105 block_t blkaddr; /* block address to be discarded */ 106 int len; /* # of consecutive blocks of the discard */ 107 }; 108 109 /* for the list of fsync inodes, used only during recovery */ 110 struct fsync_inode_entry { 111 struct list_head list; /* list head */ 112 struct inode *inode; /* vfs inode pointer */ 113 block_t blkaddr; /* block address locating the last inode */ 114 }; 115 116 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) 117 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) 118 119 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) 120 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) 121 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) 122 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) 123 124 static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) 125 { 126 int before = nats_in_cursum(rs); 127 rs->n_nats = cpu_to_le16(before + i); 128 return before; 129 } 130 131 static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) 132 { 133 int before = sits_in_cursum(rs); 134 rs->n_sits = cpu_to_le16(before + i); 135 return before; 136 } 137 138 /* 139 * ioctl commands 140 */ 141 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS 142 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS 143 144 #if defined(__KERNEL__) && defined(CONFIG_COMPAT) 145 /* 146 * ioctl commands in 32 bit emulation 147 */ 148 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS 149 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS 150 #endif 151 152 /* 153 * For INODE and NODE manager 154 */ 155 /* 156 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 157 * as its node offset to distinguish from index node blocks. 158 * But some bits are used to mark the node block. 159 */ 160 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ 161 >> OFFSET_BIT_SHIFT) 162 enum { 163 ALLOC_NODE, /* allocate a new node page if needed */ 164 LOOKUP_NODE, /* look up a node without readahead */ 165 LOOKUP_NODE_RA, /* 166 * look up a node with readahead called 167 * by get_datablock_ro. 168 */ 169 }; 170 171 #define F2FS_LINK_MAX 32000 /* maximum link count per file */ 172 173 /* for in-memory extent cache entry */ 174 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ 175 176 struct extent_info { 177 rwlock_t ext_lock; /* rwlock for consistency */ 178 unsigned int fofs; /* start offset in a file */ 179 u32 blk_addr; /* start block address of the extent */ 180 unsigned int len; /* length of the extent */ 181 }; 182 183 /* 184 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. 185 */ 186 #define FADVISE_COLD_BIT 0x01 187 #define FADVISE_LOST_PINO_BIT 0x02 188 189 struct f2fs_inode_info { 190 struct inode vfs_inode; /* serve a vfs inode */ 191 unsigned long i_flags; /* keep an inode flags for ioctl */ 192 unsigned char i_advise; /* use to give file attribute hints */ 193 unsigned int i_current_depth; /* use only in directory structure */ 194 unsigned int i_pino; /* parent inode number */ 195 umode_t i_acl_mode; /* keep file acl mode temporarily */ 196 197 /* Use below internally in f2fs*/ 198 unsigned long flags; /* use to pass per-file flags */ 199 atomic_t dirty_dents; /* # of dirty dentry pages */ 200 f2fs_hash_t chash; /* hash value of given file name */ 201 unsigned int clevel; /* maximum level of given file name */ 202 nid_t i_xattr_nid; /* node id that contains xattrs */ 203 unsigned long long xattr_ver; /* cp version of xattr modification */ 204 struct extent_info ext; /* in-memory extent cache entry */ 205 }; 206 207 static inline void get_extent_info(struct extent_info *ext, 208 struct f2fs_extent i_ext) 209 { 210 write_lock(&ext->ext_lock); 211 ext->fofs = le32_to_cpu(i_ext.fofs); 212 ext->blk_addr = le32_to_cpu(i_ext.blk_addr); 213 ext->len = le32_to_cpu(i_ext.len); 214 write_unlock(&ext->ext_lock); 215 } 216 217 static inline void set_raw_extent(struct extent_info *ext, 218 struct f2fs_extent *i_ext) 219 { 220 read_lock(&ext->ext_lock); 221 i_ext->fofs = cpu_to_le32(ext->fofs); 222 i_ext->blk_addr = cpu_to_le32(ext->blk_addr); 223 i_ext->len = cpu_to_le32(ext->len); 224 read_unlock(&ext->ext_lock); 225 } 226 227 struct f2fs_nm_info { 228 block_t nat_blkaddr; /* base disk address of NAT */ 229 nid_t max_nid; /* maximum possible node ids */ 230 nid_t next_scan_nid; /* the next nid to be scanned */ 231 232 /* NAT cache management */ 233 struct radix_tree_root nat_root;/* root of the nat entry cache */ 234 rwlock_t nat_tree_lock; /* protect nat_tree_lock */ 235 unsigned int nat_cnt; /* the # of cached nat entries */ 236 struct list_head nat_entries; /* cached nat entry list (clean) */ 237 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ 238 239 /* free node ids management */ 240 struct list_head free_nid_list; /* a list for free nids */ 241 spinlock_t free_nid_list_lock; /* protect free nid list */ 242 unsigned int fcnt; /* the number of free node id */ 243 struct mutex build_lock; /* lock for build free nids */ 244 245 /* for checkpoint */ 246 char *nat_bitmap; /* NAT bitmap pointer */ 247 int bitmap_size; /* bitmap size */ 248 }; 249 250 /* 251 * this structure is used as one of function parameters. 252 * all the information are dedicated to a given direct node block determined 253 * by the data offset in a file. 254 */ 255 struct dnode_of_data { 256 struct inode *inode; /* vfs inode pointer */ 257 struct page *inode_page; /* its inode page, NULL is possible */ 258 struct page *node_page; /* cached direct node page */ 259 nid_t nid; /* node id of the direct node block */ 260 unsigned int ofs_in_node; /* data offset in the node page */ 261 bool inode_page_locked; /* inode page is locked or not */ 262 block_t data_blkaddr; /* block address of the node block */ 263 }; 264 265 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, 266 struct page *ipage, struct page *npage, nid_t nid) 267 { 268 memset(dn, 0, sizeof(*dn)); 269 dn->inode = inode; 270 dn->inode_page = ipage; 271 dn->node_page = npage; 272 dn->nid = nid; 273 } 274 275 /* 276 * For SIT manager 277 * 278 * By default, there are 6 active log areas across the whole main area. 279 * When considering hot and cold data separation to reduce cleaning overhead, 280 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, 281 * respectively. 282 * In the current design, you should not change the numbers intentionally. 283 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 284 * logs individually according to the underlying devices. (default: 6) 285 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for 286 * data and 8 for node logs. 287 */ 288 #define NR_CURSEG_DATA_TYPE (3) 289 #define NR_CURSEG_NODE_TYPE (3) 290 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) 291 292 enum { 293 CURSEG_HOT_DATA = 0, /* directory entry blocks */ 294 CURSEG_WARM_DATA, /* data blocks */ 295 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ 296 CURSEG_HOT_NODE, /* direct node blocks of directory files */ 297 CURSEG_WARM_NODE, /* direct node blocks of normal files */ 298 CURSEG_COLD_NODE, /* indirect node blocks */ 299 NO_CHECK_TYPE 300 }; 301 302 struct f2fs_sm_info { 303 struct sit_info *sit_info; /* whole segment information */ 304 struct free_segmap_info *free_info; /* free segment information */ 305 struct dirty_seglist_info *dirty_info; /* dirty segment information */ 306 struct curseg_info *curseg_array; /* active segment information */ 307 308 struct list_head wblist_head; /* list of under-writeback pages */ 309 spinlock_t wblist_lock; /* lock for checkpoint */ 310 311 block_t seg0_blkaddr; /* block address of 0'th segment */ 312 block_t main_blkaddr; /* start block address of main area */ 313 block_t ssa_blkaddr; /* start block address of SSA area */ 314 315 unsigned int segment_count; /* total # of segments */ 316 unsigned int main_segments; /* # of segments in main area */ 317 unsigned int reserved_segments; /* # of reserved segments */ 318 unsigned int ovp_segments; /* # of overprovision segments */ 319 320 /* a threshold to reclaim prefree segments */ 321 unsigned int rec_prefree_segments; 322 323 /* for small discard management */ 324 struct list_head discard_list; /* 4KB discard list */ 325 int nr_discards; /* # of discards in the list */ 326 int max_discards; /* max. discards to be issued */ 327 }; 328 329 /* 330 * For superblock 331 */ 332 /* 333 * COUNT_TYPE for monitoring 334 * 335 * f2fs monitors the number of several block types such as on-writeback, 336 * dirty dentry blocks, dirty node blocks, and dirty meta blocks. 337 */ 338 enum count_type { 339 F2FS_WRITEBACK, 340 F2FS_DIRTY_DENTS, 341 F2FS_DIRTY_NODES, 342 F2FS_DIRTY_META, 343 NR_COUNT_TYPE, 344 }; 345 346 /* 347 * The below are the page types of bios used in submti_bio(). 348 * The available types are: 349 * DATA User data pages. It operates as async mode. 350 * NODE Node pages. It operates as async mode. 351 * META FS metadata pages such as SIT, NAT, CP. 352 * NR_PAGE_TYPE The number of page types. 353 * META_FLUSH Make sure the previous pages are written 354 * with waiting the bio's completion 355 * ... Only can be used with META. 356 */ 357 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) 358 enum page_type { 359 DATA, 360 NODE, 361 META, 362 NR_PAGE_TYPE, 363 META_FLUSH, 364 }; 365 366 struct f2fs_bio_info { 367 struct bio *bio; /* bios to merge */ 368 sector_t last_block_in_bio; /* last block number */ 369 struct mutex io_mutex; /* mutex for bio */ 370 }; 371 372 struct f2fs_sb_info { 373 struct super_block *sb; /* pointer to VFS super block */ 374 struct proc_dir_entry *s_proc; /* proc entry */ 375 struct buffer_head *raw_super_buf; /* buffer head of raw sb */ 376 struct f2fs_super_block *raw_super; /* raw super block pointer */ 377 int s_dirty; /* dirty flag for checkpoint */ 378 379 /* for node-related operations */ 380 struct f2fs_nm_info *nm_info; /* node manager */ 381 struct inode *node_inode; /* cache node blocks */ 382 383 /* for segment-related operations */ 384 struct f2fs_sm_info *sm_info; /* segment manager */ 385 386 /* for bio operations */ 387 struct f2fs_bio_info read_io; /* for read bios */ 388 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ 389 390 /* for checkpoint */ 391 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ 392 struct inode *meta_inode; /* cache meta blocks */ 393 struct mutex cp_mutex; /* checkpoint procedure lock */ 394 struct rw_semaphore cp_rwsem; /* blocking FS operations */ 395 struct mutex node_write; /* locking node writes */ 396 struct mutex writepages; /* mutex for writepages() */ 397 bool por_doing; /* recovery is doing or not */ 398 bool on_build_free_nids; /* build_free_nids is doing */ 399 wait_queue_head_t cp_wait; 400 401 /* for orphan inode management */ 402 struct list_head orphan_inode_list; /* orphan inode list */ 403 struct mutex orphan_inode_mutex; /* for orphan inode list */ 404 unsigned int n_orphans; /* # of orphan inodes */ 405 406 /* for directory inode management */ 407 struct list_head dir_inode_list; /* dir inode list */ 408 spinlock_t dir_inode_lock; /* for dir inode list lock */ 409 410 /* basic file system units */ 411 unsigned int log_sectors_per_block; /* log2 sectors per block */ 412 unsigned int log_blocksize; /* log2 block size */ 413 unsigned int blocksize; /* block size */ 414 unsigned int root_ino_num; /* root inode number*/ 415 unsigned int node_ino_num; /* node inode number*/ 416 unsigned int meta_ino_num; /* meta inode number*/ 417 unsigned int log_blocks_per_seg; /* log2 blocks per segment */ 418 unsigned int blocks_per_seg; /* blocks per segment */ 419 unsigned int segs_per_sec; /* segments per section */ 420 unsigned int secs_per_zone; /* sections per zone */ 421 unsigned int total_sections; /* total section count */ 422 unsigned int total_node_count; /* total node block count */ 423 unsigned int total_valid_node_count; /* valid node block count */ 424 unsigned int total_valid_inode_count; /* valid inode count */ 425 int active_logs; /* # of active logs */ 426 427 block_t user_block_count; /* # of user blocks */ 428 block_t total_valid_block_count; /* # of valid blocks */ 429 block_t alloc_valid_block_count; /* # of allocated blocks */ 430 block_t last_valid_block_count; /* for recovery */ 431 u32 s_next_generation; /* for NFS support */ 432 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ 433 434 struct f2fs_mount_info mount_opt; /* mount options */ 435 436 /* for cleaning operations */ 437 struct mutex gc_mutex; /* mutex for GC */ 438 struct f2fs_gc_kthread *gc_thread; /* GC thread */ 439 unsigned int cur_victim_sec; /* current victim section num */ 440 441 /* 442 * for stat information. 443 * one is for the LFS mode, and the other is for the SSR mode. 444 */ 445 #ifdef CONFIG_F2FS_STAT_FS 446 struct f2fs_stat_info *stat_info; /* FS status information */ 447 unsigned int segment_count[2]; /* # of allocated segments */ 448 unsigned int block_count[2]; /* # of allocated blocks */ 449 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ 450 int bg_gc; /* background gc calls */ 451 unsigned int n_dirty_dirs; /* # of dir inodes */ 452 #endif 453 unsigned int last_victim[2]; /* last victim segment # */ 454 spinlock_t stat_lock; /* lock for stat operations */ 455 456 /* For sysfs suppport */ 457 struct kobject s_kobj; 458 struct completion s_kobj_unregister; 459 }; 460 461 /* 462 * Inline functions 463 */ 464 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) 465 { 466 return container_of(inode, struct f2fs_inode_info, vfs_inode); 467 } 468 469 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) 470 { 471 return sb->s_fs_info; 472 } 473 474 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) 475 { 476 return (struct f2fs_super_block *)(sbi->raw_super); 477 } 478 479 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) 480 { 481 return (struct f2fs_checkpoint *)(sbi->ckpt); 482 } 483 484 static inline struct f2fs_node *F2FS_NODE(struct page *page) 485 { 486 return (struct f2fs_node *)page_address(page); 487 } 488 489 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) 490 { 491 return (struct f2fs_nm_info *)(sbi->nm_info); 492 } 493 494 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) 495 { 496 return (struct f2fs_sm_info *)(sbi->sm_info); 497 } 498 499 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) 500 { 501 return (struct sit_info *)(SM_I(sbi)->sit_info); 502 } 503 504 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) 505 { 506 return (struct free_segmap_info *)(SM_I(sbi)->free_info); 507 } 508 509 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) 510 { 511 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); 512 } 513 514 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) 515 { 516 sbi->s_dirty = 1; 517 } 518 519 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) 520 { 521 sbi->s_dirty = 0; 522 } 523 524 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) 525 { 526 return le64_to_cpu(cp->checkpoint_ver); 527 } 528 529 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 530 { 531 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 532 return ckpt_flags & f; 533 } 534 535 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 536 { 537 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 538 ckpt_flags |= f; 539 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 540 } 541 542 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 543 { 544 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 545 ckpt_flags &= (~f); 546 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 547 } 548 549 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) 550 { 551 down_read(&sbi->cp_rwsem); 552 } 553 554 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) 555 { 556 up_read(&sbi->cp_rwsem); 557 } 558 559 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) 560 { 561 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); 562 } 563 564 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) 565 { 566 up_write(&sbi->cp_rwsem); 567 } 568 569 /* 570 * Check whether the given nid is within node id range. 571 */ 572 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 573 { 574 WARN_ON((nid >= NM_I(sbi)->max_nid)); 575 if (nid >= NM_I(sbi)->max_nid) 576 return -EINVAL; 577 return 0; 578 } 579 580 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 581 582 /* 583 * Check whether the inode has blocks or not 584 */ 585 static inline int F2FS_HAS_BLOCKS(struct inode *inode) 586 { 587 if (F2FS_I(inode)->i_xattr_nid) 588 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); 589 else 590 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); 591 } 592 593 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, 594 struct inode *inode, blkcnt_t count) 595 { 596 block_t valid_block_count; 597 598 spin_lock(&sbi->stat_lock); 599 valid_block_count = 600 sbi->total_valid_block_count + (block_t)count; 601 if (valid_block_count > sbi->user_block_count) { 602 spin_unlock(&sbi->stat_lock); 603 return false; 604 } 605 inode->i_blocks += count; 606 sbi->total_valid_block_count = valid_block_count; 607 sbi->alloc_valid_block_count += (block_t)count; 608 spin_unlock(&sbi->stat_lock); 609 return true; 610 } 611 612 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, 613 struct inode *inode, 614 blkcnt_t count) 615 { 616 spin_lock(&sbi->stat_lock); 617 f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); 618 f2fs_bug_on(inode->i_blocks < count); 619 inode->i_blocks -= count; 620 sbi->total_valid_block_count -= (block_t)count; 621 spin_unlock(&sbi->stat_lock); 622 } 623 624 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) 625 { 626 atomic_inc(&sbi->nr_pages[count_type]); 627 F2FS_SET_SB_DIRT(sbi); 628 } 629 630 static inline void inode_inc_dirty_dents(struct inode *inode) 631 { 632 atomic_inc(&F2FS_I(inode)->dirty_dents); 633 } 634 635 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) 636 { 637 atomic_dec(&sbi->nr_pages[count_type]); 638 } 639 640 static inline void inode_dec_dirty_dents(struct inode *inode) 641 { 642 atomic_dec(&F2FS_I(inode)->dirty_dents); 643 } 644 645 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) 646 { 647 return atomic_read(&sbi->nr_pages[count_type]); 648 } 649 650 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) 651 { 652 unsigned int pages_per_sec = sbi->segs_per_sec * 653 (1 << sbi->log_blocks_per_seg); 654 return ((get_pages(sbi, block_type) + pages_per_sec - 1) 655 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; 656 } 657 658 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) 659 { 660 block_t ret; 661 spin_lock(&sbi->stat_lock); 662 ret = sbi->total_valid_block_count; 663 spin_unlock(&sbi->stat_lock); 664 return ret; 665 } 666 667 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) 668 { 669 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 670 671 /* return NAT or SIT bitmap */ 672 if (flag == NAT_BITMAP) 673 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 674 else if (flag == SIT_BITMAP) 675 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 676 677 return 0; 678 } 679 680 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) 681 { 682 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 683 int offset = (flag == NAT_BITMAP) ? 684 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; 685 return &ckpt->sit_nat_version_bitmap + offset; 686 } 687 688 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) 689 { 690 block_t start_addr; 691 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 692 unsigned long long ckpt_version = cur_cp_version(ckpt); 693 694 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); 695 696 /* 697 * odd numbered checkpoint should at cp segment 0 698 * and even segent must be at cp segment 1 699 */ 700 if (!(ckpt_version & 1)) 701 start_addr += sbi->blocks_per_seg; 702 703 return start_addr; 704 } 705 706 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) 707 { 708 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); 709 } 710 711 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, 712 struct inode *inode) 713 { 714 block_t valid_block_count; 715 unsigned int valid_node_count; 716 717 spin_lock(&sbi->stat_lock); 718 719 valid_block_count = sbi->total_valid_block_count + 1; 720 if (valid_block_count > sbi->user_block_count) { 721 spin_unlock(&sbi->stat_lock); 722 return false; 723 } 724 725 valid_node_count = sbi->total_valid_node_count + 1; 726 if (valid_node_count > sbi->total_node_count) { 727 spin_unlock(&sbi->stat_lock); 728 return false; 729 } 730 731 if (inode) 732 inode->i_blocks++; 733 734 sbi->alloc_valid_block_count++; 735 sbi->total_valid_node_count++; 736 sbi->total_valid_block_count++; 737 spin_unlock(&sbi->stat_lock); 738 739 return true; 740 } 741 742 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, 743 struct inode *inode) 744 { 745 spin_lock(&sbi->stat_lock); 746 747 f2fs_bug_on(!sbi->total_valid_block_count); 748 f2fs_bug_on(!sbi->total_valid_node_count); 749 f2fs_bug_on(!inode->i_blocks); 750 751 inode->i_blocks--; 752 sbi->total_valid_node_count--; 753 sbi->total_valid_block_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 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); 1134 void update_extent_cache(block_t, struct dnode_of_data *); 1135 struct page *find_data_page(struct inode *, pgoff_t, bool); 1136 struct page *get_lock_data_page(struct inode *, pgoff_t); 1137 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); 1138 int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int); 1139 void f2fs_submit_read_bio(struct f2fs_sb_info *, int); 1140 void submit_read_page(struct f2fs_sb_info *, struct page *, block_t, int); 1141 int do_write_data_page(struct page *); 1142 1143 /* 1144 * gc.c 1145 */ 1146 int start_gc_thread(struct f2fs_sb_info *); 1147 void stop_gc_thread(struct f2fs_sb_info *); 1148 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); 1149 int f2fs_gc(struct f2fs_sb_info *); 1150 void build_gc_manager(struct f2fs_sb_info *); 1151 int __init create_gc_caches(void); 1152 void destroy_gc_caches(void); 1153 1154 /* 1155 * recovery.c 1156 */ 1157 int recover_fsync_data(struct f2fs_sb_info *); 1158 bool space_for_roll_forward(struct f2fs_sb_info *); 1159 1160 /* 1161 * debug.c 1162 */ 1163 #ifdef CONFIG_F2FS_STAT_FS 1164 struct f2fs_stat_info { 1165 struct list_head stat_list; 1166 struct f2fs_sb_info *sbi; 1167 struct mutex stat_lock; 1168 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; 1169 int main_area_segs, main_area_sections, main_area_zones; 1170 int hit_ext, total_ext; 1171 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; 1172 int nats, sits, fnids; 1173 int total_count, utilization; 1174 int bg_gc; 1175 unsigned int valid_count, valid_node_count, valid_inode_count; 1176 unsigned int bimodal, avg_vblocks; 1177 int util_free, util_valid, util_invalid; 1178 int rsvd_segs, overp_segs; 1179 int dirty_count, node_pages, meta_pages; 1180 int prefree_count, call_count; 1181 int tot_segs, node_segs, data_segs, free_segs, free_secs; 1182 int tot_blks, data_blks, node_blks; 1183 int curseg[NR_CURSEG_TYPE]; 1184 int cursec[NR_CURSEG_TYPE]; 1185 int curzone[NR_CURSEG_TYPE]; 1186 1187 unsigned int segment_count[2]; 1188 unsigned int block_count[2]; 1189 unsigned base_mem, cache_mem; 1190 }; 1191 1192 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) 1193 { 1194 return (struct f2fs_stat_info*)sbi->stat_info; 1195 } 1196 1197 #define stat_inc_call_count(si) ((si)->call_count++) 1198 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) 1199 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) 1200 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) 1201 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) 1202 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) 1203 #define stat_inc_seg_type(sbi, curseg) \ 1204 ((sbi)->segment_count[(curseg)->alloc_type]++) 1205 #define stat_inc_block_count(sbi, curseg) \ 1206 ((sbi)->block_count[(curseg)->alloc_type]++) 1207 1208 #define stat_inc_seg_count(sbi, type) \ 1209 do { \ 1210 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1211 (si)->tot_segs++; \ 1212 if (type == SUM_TYPE_DATA) \ 1213 si->data_segs++; \ 1214 else \ 1215 si->node_segs++; \ 1216 } while (0) 1217 1218 #define stat_inc_tot_blk_count(si, blks) \ 1219 (si->tot_blks += (blks)) 1220 1221 #define stat_inc_data_blk_count(sbi, blks) \ 1222 do { \ 1223 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1224 stat_inc_tot_blk_count(si, blks); \ 1225 si->data_blks += (blks); \ 1226 } while (0) 1227 1228 #define stat_inc_node_blk_count(sbi, blks) \ 1229 do { \ 1230 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1231 stat_inc_tot_blk_count(si, blks); \ 1232 si->node_blks += (blks); \ 1233 } while (0) 1234 1235 int f2fs_build_stats(struct f2fs_sb_info *); 1236 void f2fs_destroy_stats(struct f2fs_sb_info *); 1237 void __init f2fs_create_root_stats(void); 1238 void f2fs_destroy_root_stats(void); 1239 #else 1240 #define stat_inc_call_count(si) 1241 #define stat_inc_bggc_count(si) 1242 #define stat_inc_dirty_dir(sbi) 1243 #define stat_dec_dirty_dir(sbi) 1244 #define stat_inc_total_hit(sb) 1245 #define stat_inc_read_hit(sb) 1246 #define stat_inc_seg_type(sbi, curseg) 1247 #define stat_inc_block_count(sbi, curseg) 1248 #define stat_inc_seg_count(si, type) 1249 #define stat_inc_tot_blk_count(si, blks) 1250 #define stat_inc_data_blk_count(si, blks) 1251 #define stat_inc_node_blk_count(sbi, blks) 1252 1253 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } 1254 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } 1255 static inline void __init f2fs_create_root_stats(void) { } 1256 static inline void f2fs_destroy_root_stats(void) { } 1257 #endif 1258 1259 extern const struct file_operations f2fs_dir_operations; 1260 extern const struct file_operations f2fs_file_operations; 1261 extern const struct inode_operations f2fs_file_inode_operations; 1262 extern const struct address_space_operations f2fs_dblock_aops; 1263 extern const struct address_space_operations f2fs_node_aops; 1264 extern const struct address_space_operations f2fs_meta_aops; 1265 extern const struct inode_operations f2fs_dir_inode_operations; 1266 extern const struct inode_operations f2fs_symlink_inode_operations; 1267 extern const struct inode_operations f2fs_special_inode_operations; 1268 #endif 1269