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