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(sbi, condition) BUG_ON(condition) 25#define f2fs_down_write(x, y) down_write_nest_lock(x, y) 26#else 27#define f2fs_bug_on(sbi, condition) \ 28 do { \ 29 if (unlikely(condition)) { \ 30 WARN_ON(1); \ 31 set_sbi_flag(sbi, SBI_NEED_FSCK); \ 32 } \ 33 } while (0) 34#define f2fs_down_write(x, y) down_write(x) 35#endif 36 37/* 38 * For mount options 39 */ 40#define F2FS_MOUNT_BG_GC 0x00000001 41#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 42#define F2FS_MOUNT_DISCARD 0x00000004 43#define F2FS_MOUNT_NOHEAP 0x00000008 44#define F2FS_MOUNT_XATTR_USER 0x00000010 45#define F2FS_MOUNT_POSIX_ACL 0x00000020 46#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 47#define F2FS_MOUNT_INLINE_XATTR 0x00000080 48#define F2FS_MOUNT_INLINE_DATA 0x00000100 49#define F2FS_MOUNT_INLINE_DENTRY 0x00000200 50#define F2FS_MOUNT_FLUSH_MERGE 0x00000400 51#define F2FS_MOUNT_NOBARRIER 0x00000800 52#define F2FS_MOUNT_FASTBOOT 0x00001000 53#define F2FS_MOUNT_EXTENT_CACHE 0x00002000 54 55#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) 56#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) 57#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) 58 59#define ver_after(a, b) (typecheck(unsigned long long, a) && \ 60 typecheck(unsigned long long, b) && \ 61 ((long long)((a) - (b)) > 0)) 62 63typedef u32 block_t; /* 64 * should not change u32, since it is the on-disk block 65 * address format, __le32. 66 */ 67typedef u32 nid_t; 68 69struct f2fs_mount_info { 70 unsigned int opt; 71}; 72 73#define CRCPOLY_LE 0xedb88320 74 75static inline __u32 f2fs_crc32(void *buf, size_t len) 76{ 77 unsigned char *p = (unsigned char *)buf; 78 __u32 crc = F2FS_SUPER_MAGIC; 79 int i; 80 81 while (len--) { 82 crc ^= *p++; 83 for (i = 0; i < 8; i++) 84 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); 85 } 86 return crc; 87} 88 89static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) 90{ 91 return f2fs_crc32(buf, buf_size) == blk_crc; 92} 93 94/* 95 * For checkpoint manager 96 */ 97enum { 98 NAT_BITMAP, 99 SIT_BITMAP 100}; 101 102enum { 103 CP_UMOUNT, 104 CP_FASTBOOT, 105 CP_SYNC, 106 CP_RECOVERY, 107 CP_DISCARD, 108}; 109 110#define DEF_BATCHED_TRIM_SECTIONS 32 111#define BATCHED_TRIM_SEGMENTS(sbi) \ 112 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec) 113 114struct cp_control { 115 int reason; 116 __u64 trim_start; 117 __u64 trim_end; 118 __u64 trim_minlen; 119 __u64 trimmed; 120}; 121 122/* 123 * For CP/NAT/SIT/SSA readahead 124 */ 125enum { 126 META_CP, 127 META_NAT, 128 META_SIT, 129 META_SSA, 130 META_POR, 131}; 132 133/* for the list of ino */ 134enum { 135 ORPHAN_INO, /* for orphan ino list */ 136 APPEND_INO, /* for append ino list */ 137 UPDATE_INO, /* for update ino list */ 138 MAX_INO_ENTRY, /* max. list */ 139}; 140 141struct ino_entry { 142 struct list_head list; /* list head */ 143 nid_t ino; /* inode number */ 144}; 145 146/* 147 * for the list of directory inodes or gc inodes. 148 * NOTE: there are two slab users for this structure, if we add/modify/delete 149 * fields in structure for one of slab users, it may affect fields or size of 150 * other one, in this condition, it's better to split both of slab and related 151 * data structure. 152 */ 153struct inode_entry { 154 struct list_head list; /* list head */ 155 struct inode *inode; /* vfs inode pointer */ 156}; 157 158/* for the list of blockaddresses to be discarded */ 159struct discard_entry { 160 struct list_head list; /* list head */ 161 block_t blkaddr; /* block address to be discarded */ 162 int len; /* # of consecutive blocks of the discard */ 163}; 164 165/* for the list of fsync inodes, used only during recovery */ 166struct fsync_inode_entry { 167 struct list_head list; /* list head */ 168 struct inode *inode; /* vfs inode pointer */ 169 block_t blkaddr; /* block address locating the last fsync */ 170 block_t last_dentry; /* block address locating the last dentry */ 171 block_t last_inode; /* block address locating the last inode */ 172}; 173 174#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) 175#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) 176 177#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) 178#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) 179#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) 180#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) 181 182#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum)) 183#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum)) 184 185static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) 186{ 187 int before = nats_in_cursum(rs); 188 rs->n_nats = cpu_to_le16(before + i); 189 return before; 190} 191 192static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) 193{ 194 int before = sits_in_cursum(rs); 195 rs->n_sits = cpu_to_le16(before + i); 196 return before; 197} 198 199static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, 200 int type) 201{ 202 if (type == NAT_JOURNAL) 203 return size <= MAX_NAT_JENTRIES(sum); 204 return size <= MAX_SIT_JENTRIES(sum); 205} 206 207/* 208 * ioctl commands 209 */ 210#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS 211#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS 212#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION 213 214#define F2FS_IOCTL_MAGIC 0xf5 215#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) 216#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) 217#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) 218#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4) 219#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) 220 221/* 222 * should be same as XFS_IOC_GOINGDOWN. 223 * Flags for going down operation used by FS_IOC_GOINGDOWN 224 */ 225#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */ 226#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */ 227#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */ 228#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */ 229 230#if defined(__KERNEL__) && defined(CONFIG_COMPAT) 231/* 232 * ioctl commands in 32 bit emulation 233 */ 234#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS 235#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS 236#endif 237 238/* 239 * For INODE and NODE manager 240 */ 241/* for directory operations */ 242struct f2fs_dentry_ptr { 243 const void *bitmap; 244 struct f2fs_dir_entry *dentry; 245 __u8 (*filename)[F2FS_SLOT_LEN]; 246 int max; 247}; 248 249static inline void make_dentry_ptr(struct f2fs_dentry_ptr *d, 250 void *src, int type) 251{ 252 if (type == 1) { 253 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src; 254 d->max = NR_DENTRY_IN_BLOCK; 255 d->bitmap = &t->dentry_bitmap; 256 d->dentry = t->dentry; 257 d->filename = t->filename; 258 } else { 259 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src; 260 d->max = NR_INLINE_DENTRY; 261 d->bitmap = &t->dentry_bitmap; 262 d->dentry = t->dentry; 263 d->filename = t->filename; 264 } 265} 266 267/* 268 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 269 * as its node offset to distinguish from index node blocks. 270 * But some bits are used to mark the node block. 271 */ 272#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ 273 >> OFFSET_BIT_SHIFT) 274enum { 275 ALLOC_NODE, /* allocate a new node page if needed */ 276 LOOKUP_NODE, /* look up a node without readahead */ 277 LOOKUP_NODE_RA, /* 278 * look up a node with readahead called 279 * by get_data_block. 280 */ 281}; 282 283#define F2FS_LINK_MAX 32000 /* maximum link count per file */ 284 285#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ 286 287/* vector size for gang look-up from extent cache that consists of radix tree */ 288#define EXT_TREE_VEC_SIZE 64 289 290/* for in-memory extent cache entry */ 291#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */ 292 293/* number of extent info in extent cache we try to shrink */ 294#define EXTENT_CACHE_SHRINK_NUMBER 128 295 296struct extent_info { 297 unsigned int fofs; /* start offset in a file */ 298 u32 blk; /* start block address of the extent */ 299 unsigned int len; /* length of the extent */ 300}; 301 302struct extent_node { 303 struct rb_node rb_node; /* rb node located in rb-tree */ 304 struct list_head list; /* node in global extent list of sbi */ 305 struct extent_info ei; /* extent info */ 306}; 307 308struct extent_tree { 309 nid_t ino; /* inode number */ 310 struct rb_root root; /* root of extent info rb-tree */ 311 struct extent_node *cached_en; /* recently accessed extent node */ 312 rwlock_t lock; /* protect extent info rb-tree */ 313 atomic_t refcount; /* reference count of rb-tree */ 314 unsigned int count; /* # of extent node in rb-tree*/ 315}; 316 317/* 318 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. 319 */ 320#define FADVISE_COLD_BIT 0x01 321#define FADVISE_LOST_PINO_BIT 0x02 322 323#define DEF_DIR_LEVEL 0 324 325struct f2fs_inode_info { 326 struct inode vfs_inode; /* serve a vfs inode */ 327 unsigned long i_flags; /* keep an inode flags for ioctl */ 328 unsigned char i_advise; /* use to give file attribute hints */ 329 unsigned char i_dir_level; /* use for dentry level for large dir */ 330 unsigned int i_current_depth; /* use only in directory structure */ 331 unsigned int i_pino; /* parent inode number */ 332 umode_t i_acl_mode; /* keep file acl mode temporarily */ 333 334 /* Use below internally in f2fs*/ 335 unsigned long flags; /* use to pass per-file flags */ 336 struct rw_semaphore i_sem; /* protect fi info */ 337 atomic_t dirty_pages; /* # of dirty pages */ 338 f2fs_hash_t chash; /* hash value of given file name */ 339 unsigned int clevel; /* maximum level of given file name */ 340 nid_t i_xattr_nid; /* node id that contains xattrs */ 341 unsigned long long xattr_ver; /* cp version of xattr modification */ 342 struct extent_info ext; /* in-memory extent cache entry */ 343 rwlock_t ext_lock; /* rwlock for single extent cache */ 344 struct inode_entry *dirty_dir; /* the pointer of dirty dir */ 345 346 struct radix_tree_root inmem_root; /* radix tree for inmem pages */ 347 struct list_head inmem_pages; /* inmemory pages managed by f2fs */ 348 struct mutex inmem_lock; /* lock for inmemory pages */ 349}; 350 351static inline void get_extent_info(struct extent_info *ext, 352 struct f2fs_extent i_ext) 353{ 354 ext->fofs = le32_to_cpu(i_ext.fofs); 355 ext->blk = le32_to_cpu(i_ext.blk); 356 ext->len = le32_to_cpu(i_ext.len); 357} 358 359static inline void set_raw_extent(struct extent_info *ext, 360 struct f2fs_extent *i_ext) 361{ 362 i_ext->fofs = cpu_to_le32(ext->fofs); 363 i_ext->blk = cpu_to_le32(ext->blk); 364 i_ext->len = cpu_to_le32(ext->len); 365} 366 367static inline void set_extent_info(struct extent_info *ei, unsigned int fofs, 368 u32 blk, unsigned int len) 369{ 370 ei->fofs = fofs; 371 ei->blk = blk; 372 ei->len = len; 373} 374 375static inline bool __is_extent_same(struct extent_info *ei1, 376 struct extent_info *ei2) 377{ 378 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk && 379 ei1->len == ei2->len); 380} 381 382static inline bool __is_extent_mergeable(struct extent_info *back, 383 struct extent_info *front) 384{ 385 return (back->fofs + back->len == front->fofs && 386 back->blk + back->len == front->blk); 387} 388 389static inline bool __is_back_mergeable(struct extent_info *cur, 390 struct extent_info *back) 391{ 392 return __is_extent_mergeable(back, cur); 393} 394 395static inline bool __is_front_mergeable(struct extent_info *cur, 396 struct extent_info *front) 397{ 398 return __is_extent_mergeable(cur, front); 399} 400 401struct f2fs_nm_info { 402 block_t nat_blkaddr; /* base disk address of NAT */ 403 nid_t max_nid; /* maximum possible node ids */ 404 nid_t available_nids; /* maximum available node ids */ 405 nid_t next_scan_nid; /* the next nid to be scanned */ 406 unsigned int ram_thresh; /* control the memory footprint */ 407 408 /* NAT cache management */ 409 struct radix_tree_root nat_root;/* root of the nat entry cache */ 410 struct radix_tree_root nat_set_root;/* root of the nat set cache */ 411 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ 412 struct list_head nat_entries; /* cached nat entry list (clean) */ 413 unsigned int nat_cnt; /* the # of cached nat entries */ 414 unsigned int dirty_nat_cnt; /* total num of nat entries in set */ 415 416 /* free node ids management */ 417 struct radix_tree_root free_nid_root;/* root of the free_nid cache */ 418 struct list_head free_nid_list; /* a list for free nids */ 419 spinlock_t free_nid_list_lock; /* protect free nid list */ 420 unsigned int fcnt; /* the number of free node id */ 421 struct mutex build_lock; /* lock for build free nids */ 422 423 /* for checkpoint */ 424 char *nat_bitmap; /* NAT bitmap pointer */ 425 int bitmap_size; /* bitmap size */ 426}; 427 428/* 429 * this structure is used as one of function parameters. 430 * all the information are dedicated to a given direct node block determined 431 * by the data offset in a file. 432 */ 433struct dnode_of_data { 434 struct inode *inode; /* vfs inode pointer */ 435 struct page *inode_page; /* its inode page, NULL is possible */ 436 struct page *node_page; /* cached direct node page */ 437 nid_t nid; /* node id of the direct node block */ 438 unsigned int ofs_in_node; /* data offset in the node page */ 439 bool inode_page_locked; /* inode page is locked or not */ 440 block_t data_blkaddr; /* block address of the node block */ 441}; 442 443static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, 444 struct page *ipage, struct page *npage, nid_t nid) 445{ 446 memset(dn, 0, sizeof(*dn)); 447 dn->inode = inode; 448 dn->inode_page = ipage; 449 dn->node_page = npage; 450 dn->nid = nid; 451} 452 453/* 454 * For SIT manager 455 * 456 * By default, there are 6 active log areas across the whole main area. 457 * When considering hot and cold data separation to reduce cleaning overhead, 458 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, 459 * respectively. 460 * In the current design, you should not change the numbers intentionally. 461 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 462 * logs individually according to the underlying devices. (default: 6) 463 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for 464 * data and 8 for node logs. 465 */ 466#define NR_CURSEG_DATA_TYPE (3) 467#define NR_CURSEG_NODE_TYPE (3) 468#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) 469 470enum { 471 CURSEG_HOT_DATA = 0, /* directory entry blocks */ 472 CURSEG_WARM_DATA, /* data blocks */ 473 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ 474 CURSEG_HOT_NODE, /* direct node blocks of directory files */ 475 CURSEG_WARM_NODE, /* direct node blocks of normal files */ 476 CURSEG_COLD_NODE, /* indirect node blocks */ 477 NO_CHECK_TYPE, 478 CURSEG_DIRECT_IO, /* to use for the direct IO path */ 479}; 480 481struct flush_cmd { 482 struct completion wait; 483 struct llist_node llnode; 484 int ret; 485}; 486 487struct flush_cmd_control { 488 struct task_struct *f2fs_issue_flush; /* flush thread */ 489 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ 490 struct llist_head issue_list; /* list for command issue */ 491 struct llist_node *dispatch_list; /* list for command dispatch */ 492}; 493 494struct f2fs_sm_info { 495 struct sit_info *sit_info; /* whole segment information */ 496 struct free_segmap_info *free_info; /* free segment information */ 497 struct dirty_seglist_info *dirty_info; /* dirty segment information */ 498 struct curseg_info *curseg_array; /* active segment information */ 499 500 block_t seg0_blkaddr; /* block address of 0'th segment */ 501 block_t main_blkaddr; /* start block address of main area */ 502 block_t ssa_blkaddr; /* start block address of SSA area */ 503 504 unsigned int segment_count; /* total # of segments */ 505 unsigned int main_segments; /* # of segments in main area */ 506 unsigned int reserved_segments; /* # of reserved segments */ 507 unsigned int ovp_segments; /* # of overprovision segments */ 508 509 /* a threshold to reclaim prefree segments */ 510 unsigned int rec_prefree_segments; 511 512 /* for small discard management */ 513 struct list_head discard_list; /* 4KB discard list */ 514 int nr_discards; /* # of discards in the list */ 515 int max_discards; /* max. discards to be issued */ 516 517 /* for batched trimming */ 518 unsigned int trim_sections; /* # of sections to trim */ 519 520 struct list_head sit_entry_set; /* sit entry set list */ 521 522 unsigned int ipu_policy; /* in-place-update policy */ 523 unsigned int min_ipu_util; /* in-place-update threshold */ 524 unsigned int min_fsync_blocks; /* threshold for fsync */ 525 526 /* for flush command control */ 527 struct flush_cmd_control *cmd_control_info; 528 529}; 530 531/* 532 * For superblock 533 */ 534/* 535 * COUNT_TYPE for monitoring 536 * 537 * f2fs monitors the number of several block types such as on-writeback, 538 * dirty dentry blocks, dirty node blocks, and dirty meta blocks. 539 */ 540enum count_type { 541 F2FS_WRITEBACK, 542 F2FS_DIRTY_DENTS, 543 F2FS_DIRTY_NODES, 544 F2FS_DIRTY_META, 545 F2FS_INMEM_PAGES, 546 NR_COUNT_TYPE, 547}; 548 549/* 550 * The below are the page types of bios used in submit_bio(). 551 * The available types are: 552 * DATA User data pages. It operates as async mode. 553 * NODE Node pages. It operates as async mode. 554 * META FS metadata pages such as SIT, NAT, CP. 555 * NR_PAGE_TYPE The number of page types. 556 * META_FLUSH Make sure the previous pages are written 557 * with waiting the bio's completion 558 * ... Only can be used with META. 559 */ 560#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) 561enum page_type { 562 DATA, 563 NODE, 564 META, 565 NR_PAGE_TYPE, 566 META_FLUSH, 567 INMEM, /* the below types are used by tracepoints only. */ 568 INMEM_DROP, 569 IPU, 570 OPU, 571}; 572 573struct f2fs_io_info { 574 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ 575 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */ 576 block_t blk_addr; /* block address to be written */ 577}; 578 579#define is_read_io(rw) (((rw) & 1) == READ) 580struct f2fs_bio_info { 581 struct f2fs_sb_info *sbi; /* f2fs superblock */ 582 struct bio *bio; /* bios to merge */ 583 sector_t last_block_in_bio; /* last block number */ 584 struct f2fs_io_info fio; /* store buffered io info. */ 585 struct rw_semaphore io_rwsem; /* blocking op for bio */ 586}; 587 588/* for inner inode cache management */ 589struct inode_management { 590 struct radix_tree_root ino_root; /* ino entry array */ 591 spinlock_t ino_lock; /* for ino entry lock */ 592 struct list_head ino_list; /* inode list head */ 593 unsigned long ino_num; /* number of entries */ 594}; 595 596/* For s_flag in struct f2fs_sb_info */ 597enum { 598 SBI_IS_DIRTY, /* dirty flag for checkpoint */ 599 SBI_IS_CLOSE, /* specify unmounting */ 600 SBI_NEED_FSCK, /* need fsck.f2fs to fix */ 601 SBI_POR_DOING, /* recovery is doing or not */ 602}; 603 604struct f2fs_sb_info { 605 struct super_block *sb; /* pointer to VFS super block */ 606 struct proc_dir_entry *s_proc; /* proc entry */ 607 struct buffer_head *raw_super_buf; /* buffer head of raw sb */ 608 struct f2fs_super_block *raw_super; /* raw super block pointer */ 609 int s_flag; /* flags for sbi */ 610 611 /* for node-related operations */ 612 struct f2fs_nm_info *nm_info; /* node manager */ 613 struct inode *node_inode; /* cache node blocks */ 614 615 /* for segment-related operations */ 616 struct f2fs_sm_info *sm_info; /* segment manager */ 617 618 /* for bio operations */ 619 struct f2fs_bio_info read_io; /* for read bios */ 620 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ 621 622 /* for checkpoint */ 623 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ 624 struct inode *meta_inode; /* cache meta blocks */ 625 struct mutex cp_mutex; /* checkpoint procedure lock */ 626 struct rw_semaphore cp_rwsem; /* blocking FS operations */ 627 struct rw_semaphore node_write; /* locking node writes */ 628 struct mutex writepages; /* mutex for writepages() */ 629 wait_queue_head_t cp_wait; 630 631 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */ 632 633 /* for orphan inode, use 0'th array */ 634 unsigned int max_orphans; /* max orphan inodes */ 635 636 /* for directory inode management */ 637 struct list_head dir_inode_list; /* dir inode list */ 638 spinlock_t dir_inode_lock; /* for dir inode list lock */ 639 640 /* for extent tree cache */ 641 struct radix_tree_root extent_tree_root;/* cache extent cache entries */ 642 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */ 643 struct list_head extent_list; /* lru list for shrinker */ 644 spinlock_t extent_lock; /* locking extent lru list */ 645 int total_ext_tree; /* extent tree count */ 646 atomic_t total_ext_node; /* extent info count */ 647 648 /* basic filesystem units */ 649 unsigned int log_sectors_per_block; /* log2 sectors per block */ 650 unsigned int log_blocksize; /* log2 block size */ 651 unsigned int blocksize; /* block size */ 652 unsigned int root_ino_num; /* root inode number*/ 653 unsigned int node_ino_num; /* node inode number*/ 654 unsigned int meta_ino_num; /* meta inode number*/ 655 unsigned int log_blocks_per_seg; /* log2 blocks per segment */ 656 unsigned int blocks_per_seg; /* blocks per segment */ 657 unsigned int segs_per_sec; /* segments per section */ 658 unsigned int secs_per_zone; /* sections per zone */ 659 unsigned int total_sections; /* total section count */ 660 unsigned int total_node_count; /* total node block count */ 661 unsigned int total_valid_node_count; /* valid node block count */ 662 unsigned int total_valid_inode_count; /* valid inode count */ 663 int active_logs; /* # of active logs */ 664 int dir_level; /* directory level */ 665 666 block_t user_block_count; /* # of user blocks */ 667 block_t total_valid_block_count; /* # of valid blocks */ 668 block_t alloc_valid_block_count; /* # of allocated blocks */ 669 block_t last_valid_block_count; /* for recovery */ 670 u32 s_next_generation; /* for NFS support */ 671 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ 672 673 struct f2fs_mount_info mount_opt; /* mount options */ 674 675 /* for cleaning operations */ 676 struct mutex gc_mutex; /* mutex for GC */ 677 struct f2fs_gc_kthread *gc_thread; /* GC thread */ 678 unsigned int cur_victim_sec; /* current victim section num */ 679 680 /* maximum # of trials to find a victim segment for SSR and GC */ 681 unsigned int max_victim_search; 682 683 /* 684 * for stat information. 685 * one is for the LFS mode, and the other is for the SSR mode. 686 */ 687#ifdef CONFIG_F2FS_STAT_FS 688 struct f2fs_stat_info *stat_info; /* FS status information */ 689 unsigned int segment_count[2]; /* # of allocated segments */ 690 unsigned int block_count[2]; /* # of allocated blocks */ 691 atomic_t inplace_count; /* # of inplace update */ 692 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ 693 atomic_t inline_inode; /* # of inline_data inodes */ 694 atomic_t inline_dir; /* # of inline_dentry inodes */ 695 int bg_gc; /* background gc calls */ 696 unsigned int n_dirty_dirs; /* # of dir inodes */ 697#endif 698 unsigned int last_victim[2]; /* last victim segment # */ 699 spinlock_t stat_lock; /* lock for stat operations */ 700 701 /* For sysfs suppport */ 702 struct kobject s_kobj; 703 struct completion s_kobj_unregister; 704}; 705 706/* 707 * Inline functions 708 */ 709static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) 710{ 711 return container_of(inode, struct f2fs_inode_info, vfs_inode); 712} 713 714static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) 715{ 716 return sb->s_fs_info; 717} 718 719static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) 720{ 721 return F2FS_SB(inode->i_sb); 722} 723 724static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) 725{ 726 return F2FS_I_SB(mapping->host); 727} 728 729static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) 730{ 731 return F2FS_M_SB(page->mapping); 732} 733 734static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) 735{ 736 return (struct f2fs_super_block *)(sbi->raw_super); 737} 738 739static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) 740{ 741 return (struct f2fs_checkpoint *)(sbi->ckpt); 742} 743 744static inline struct f2fs_node *F2FS_NODE(struct page *page) 745{ 746 return (struct f2fs_node *)page_address(page); 747} 748 749static inline struct f2fs_inode *F2FS_INODE(struct page *page) 750{ 751 return &((struct f2fs_node *)page_address(page))->i; 752} 753 754static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) 755{ 756 return (struct f2fs_nm_info *)(sbi->nm_info); 757} 758 759static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) 760{ 761 return (struct f2fs_sm_info *)(sbi->sm_info); 762} 763 764static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) 765{ 766 return (struct sit_info *)(SM_I(sbi)->sit_info); 767} 768 769static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) 770{ 771 return (struct free_segmap_info *)(SM_I(sbi)->free_info); 772} 773 774static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) 775{ 776 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); 777} 778 779static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) 780{ 781 return sbi->meta_inode->i_mapping; 782} 783 784static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) 785{ 786 return sbi->node_inode->i_mapping; 787} 788 789static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type) 790{ 791 return sbi->s_flag & (0x01 << type); 792} 793 794static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) 795{ 796 sbi->s_flag |= (0x01 << type); 797} 798 799static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) 800{ 801 sbi->s_flag &= ~(0x01 << type); 802} 803 804static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) 805{ 806 return le64_to_cpu(cp->checkpoint_ver); 807} 808 809static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 810{ 811 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 812 return ckpt_flags & f; 813} 814 815static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 816{ 817 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 818 ckpt_flags |= f; 819 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 820} 821 822static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 823{ 824 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 825 ckpt_flags &= (~f); 826 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 827} 828 829static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) 830{ 831 down_read(&sbi->cp_rwsem); 832} 833 834static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) 835{ 836 up_read(&sbi->cp_rwsem); 837} 838 839static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) 840{ 841 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); 842} 843 844static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) 845{ 846 up_write(&sbi->cp_rwsem); 847} 848 849static inline int __get_cp_reason(struct f2fs_sb_info *sbi) 850{ 851 int reason = CP_SYNC; 852 853 if (test_opt(sbi, FASTBOOT)) 854 reason = CP_FASTBOOT; 855 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) 856 reason = CP_UMOUNT; 857 return reason; 858} 859 860static inline bool __remain_node_summaries(int reason) 861{ 862 return (reason == CP_UMOUNT || reason == CP_FASTBOOT); 863} 864 865static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi) 866{ 867 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) || 868 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG)); 869} 870 871/* 872 * Check whether the given nid is within node id range. 873 */ 874static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 875{ 876 if (unlikely(nid < F2FS_ROOT_INO(sbi))) 877 return -EINVAL; 878 if (unlikely(nid >= NM_I(sbi)->max_nid)) 879 return -EINVAL; 880 return 0; 881} 882 883#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 884 885/* 886 * Check whether the inode has blocks or not 887 */ 888static inline int F2FS_HAS_BLOCKS(struct inode *inode) 889{ 890 if (F2FS_I(inode)->i_xattr_nid) 891 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; 892 else 893 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; 894} 895 896static inline bool f2fs_has_xattr_block(unsigned int ofs) 897{ 898 return ofs == XATTR_NODE_OFFSET; 899} 900 901static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, 902 struct inode *inode, blkcnt_t count) 903{ 904 block_t valid_block_count; 905 906 spin_lock(&sbi->stat_lock); 907 valid_block_count = 908 sbi->total_valid_block_count + (block_t)count; 909 if (unlikely(valid_block_count > sbi->user_block_count)) { 910 spin_unlock(&sbi->stat_lock); 911 return false; 912 } 913 inode->i_blocks += count; 914 sbi->total_valid_block_count = valid_block_count; 915 sbi->alloc_valid_block_count += (block_t)count; 916 spin_unlock(&sbi->stat_lock); 917 return true; 918} 919 920static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, 921 struct inode *inode, 922 blkcnt_t count) 923{ 924 spin_lock(&sbi->stat_lock); 925 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); 926 f2fs_bug_on(sbi, inode->i_blocks < count); 927 inode->i_blocks -= count; 928 sbi->total_valid_block_count -= (block_t)count; 929 spin_unlock(&sbi->stat_lock); 930} 931 932static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) 933{ 934 atomic_inc(&sbi->nr_pages[count_type]); 935 set_sbi_flag(sbi, SBI_IS_DIRTY); 936} 937 938static inline void inode_inc_dirty_pages(struct inode *inode) 939{ 940 atomic_inc(&F2FS_I(inode)->dirty_pages); 941 if (S_ISDIR(inode->i_mode)) 942 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); 943} 944 945static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) 946{ 947 atomic_dec(&sbi->nr_pages[count_type]); 948} 949 950static inline void inode_dec_dirty_pages(struct inode *inode) 951{ 952 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)) 953 return; 954 955 atomic_dec(&F2FS_I(inode)->dirty_pages); 956 957 if (S_ISDIR(inode->i_mode)) 958 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); 959} 960 961static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) 962{ 963 return atomic_read(&sbi->nr_pages[count_type]); 964} 965 966static inline int get_dirty_pages(struct inode *inode) 967{ 968 return atomic_read(&F2FS_I(inode)->dirty_pages); 969} 970 971static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) 972{ 973 unsigned int pages_per_sec = sbi->segs_per_sec * 974 (1 << sbi->log_blocks_per_seg); 975 return ((get_pages(sbi, block_type) + pages_per_sec - 1) 976 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; 977} 978 979static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) 980{ 981 return sbi->total_valid_block_count; 982} 983 984static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) 985{ 986 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 987 988 /* return NAT or SIT bitmap */ 989 if (flag == NAT_BITMAP) 990 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 991 else if (flag == SIT_BITMAP) 992 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 993 994 return 0; 995} 996 997static inline block_t __cp_payload(struct f2fs_sb_info *sbi) 998{ 999 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); 1000} 1001 1002static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) 1003{ 1004 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 1005 int offset; 1006 1007 if (__cp_payload(sbi) > 0) { 1008 if (flag == NAT_BITMAP) 1009 return &ckpt->sit_nat_version_bitmap; 1010 else 1011 return (unsigned char *)ckpt + F2FS_BLKSIZE; 1012 } else { 1013 offset = (flag == NAT_BITMAP) ? 1014 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; 1015 return &ckpt->sit_nat_version_bitmap + offset; 1016 } 1017} 1018 1019static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) 1020{ 1021 block_t start_addr; 1022 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 1023 unsigned long long ckpt_version = cur_cp_version(ckpt); 1024 1025 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); 1026 1027 /* 1028 * odd numbered checkpoint should at cp segment 0 1029 * and even segment must be at cp segment 1 1030 */ 1031 if (!(ckpt_version & 1)) 1032 start_addr += sbi->blocks_per_seg; 1033 1034 return start_addr; 1035} 1036 1037static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) 1038{ 1039 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); 1040} 1041 1042static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, 1043 struct inode *inode) 1044{ 1045 block_t valid_block_count; 1046 unsigned int valid_node_count; 1047 1048 spin_lock(&sbi->stat_lock); 1049 1050 valid_block_count = sbi->total_valid_block_count + 1; 1051 if (unlikely(valid_block_count > sbi->user_block_count)) { 1052 spin_unlock(&sbi->stat_lock); 1053 return false; 1054 } 1055 1056 valid_node_count = sbi->total_valid_node_count + 1; 1057 if (unlikely(valid_node_count > sbi->total_node_count)) { 1058 spin_unlock(&sbi->stat_lock); 1059 return false; 1060 } 1061 1062 if (inode) 1063 inode->i_blocks++; 1064 1065 sbi->alloc_valid_block_count++; 1066 sbi->total_valid_node_count++; 1067 sbi->total_valid_block_count++; 1068 spin_unlock(&sbi->stat_lock); 1069 1070 return true; 1071} 1072 1073static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, 1074 struct inode *inode) 1075{ 1076 spin_lock(&sbi->stat_lock); 1077 1078 f2fs_bug_on(sbi, !sbi->total_valid_block_count); 1079 f2fs_bug_on(sbi, !sbi->total_valid_node_count); 1080 f2fs_bug_on(sbi, !inode->i_blocks); 1081 1082 inode->i_blocks--; 1083 sbi->total_valid_node_count--; 1084 sbi->total_valid_block_count--; 1085 1086 spin_unlock(&sbi->stat_lock); 1087} 1088 1089static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) 1090{ 1091 return sbi->total_valid_node_count; 1092} 1093 1094static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) 1095{ 1096 spin_lock(&sbi->stat_lock); 1097 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count); 1098 sbi->total_valid_inode_count++; 1099 spin_unlock(&sbi->stat_lock); 1100} 1101 1102static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) 1103{ 1104 spin_lock(&sbi->stat_lock); 1105 f2fs_bug_on(sbi, !sbi->total_valid_inode_count); 1106 sbi->total_valid_inode_count--; 1107 spin_unlock(&sbi->stat_lock); 1108} 1109 1110static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) 1111{ 1112 return sbi->total_valid_inode_count; 1113} 1114 1115static inline void f2fs_put_page(struct page *page, int unlock) 1116{ 1117 if (!page) 1118 return; 1119 1120 if (unlock) { 1121 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); 1122 unlock_page(page); 1123 } 1124 page_cache_release(page); 1125} 1126 1127static inline void f2fs_put_dnode(struct dnode_of_data *dn) 1128{ 1129 if (dn->node_page) 1130 f2fs_put_page(dn->node_page, 1); 1131 if (dn->inode_page && dn->node_page != dn->inode_page) 1132 f2fs_put_page(dn->inode_page, 0); 1133 dn->node_page = NULL; 1134 dn->inode_page = NULL; 1135} 1136 1137static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, 1138 size_t size) 1139{ 1140 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); 1141} 1142 1143static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, 1144 gfp_t flags) 1145{ 1146 void *entry; 1147retry: 1148 entry = kmem_cache_alloc(cachep, flags); 1149 if (!entry) { 1150 cond_resched(); 1151 goto retry; 1152 } 1153 1154 return entry; 1155} 1156 1157static inline void f2fs_radix_tree_insert(struct radix_tree_root *root, 1158 unsigned long index, void *item) 1159{ 1160 while (radix_tree_insert(root, index, item)) 1161 cond_resched(); 1162} 1163 1164#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) 1165 1166static inline bool IS_INODE(struct page *page) 1167{ 1168 struct f2fs_node *p = F2FS_NODE(page); 1169 return RAW_IS_INODE(p); 1170} 1171 1172static inline __le32 *blkaddr_in_node(struct f2fs_node *node) 1173{ 1174 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; 1175} 1176 1177static inline block_t datablock_addr(struct page *node_page, 1178 unsigned int offset) 1179{ 1180 struct f2fs_node *raw_node; 1181 __le32 *addr_array; 1182 raw_node = F2FS_NODE(node_page); 1183 addr_array = blkaddr_in_node(raw_node); 1184 return le32_to_cpu(addr_array[offset]); 1185} 1186 1187static inline int f2fs_test_bit(unsigned int nr, char *addr) 1188{ 1189 int mask; 1190 1191 addr += (nr >> 3); 1192 mask = 1 << (7 - (nr & 0x07)); 1193 return mask & *addr; 1194} 1195 1196static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr) 1197{ 1198 int mask; 1199 int ret; 1200 1201 addr += (nr >> 3); 1202 mask = 1 << (7 - (nr & 0x07)); 1203 ret = mask & *addr; 1204 *addr |= mask; 1205 return ret; 1206} 1207 1208static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr) 1209{ 1210 int mask; 1211 int ret; 1212 1213 addr += (nr >> 3); 1214 mask = 1 << (7 - (nr & 0x07)); 1215 ret = mask & *addr; 1216 *addr &= ~mask; 1217 return ret; 1218} 1219 1220static inline void f2fs_change_bit(unsigned int nr, char *addr) 1221{ 1222 int mask; 1223 1224 addr += (nr >> 3); 1225 mask = 1 << (7 - (nr & 0x07)); 1226 *addr ^= mask; 1227} 1228 1229/* used for f2fs_inode_info->flags */ 1230enum { 1231 FI_NEW_INODE, /* indicate newly allocated inode */ 1232 FI_DIRTY_INODE, /* indicate inode is dirty or not */ 1233 FI_DIRTY_DIR, /* indicate directory has dirty pages */ 1234 FI_INC_LINK, /* need to increment i_nlink */ 1235 FI_ACL_MODE, /* indicate acl mode */ 1236 FI_NO_ALLOC, /* should not allocate any blocks */ 1237 FI_UPDATE_DIR, /* should update inode block for consistency */ 1238 FI_DELAY_IPUT, /* used for the recovery */ 1239 FI_NO_EXTENT, /* not to use the extent cache */ 1240 FI_INLINE_XATTR, /* used for inline xattr */ 1241 FI_INLINE_DATA, /* used for inline data*/ 1242 FI_INLINE_DENTRY, /* used for inline dentry */ 1243 FI_APPEND_WRITE, /* inode has appended data */ 1244 FI_UPDATE_WRITE, /* inode has in-place-update data */ 1245 FI_NEED_IPU, /* used for ipu per file */ 1246 FI_ATOMIC_FILE, /* indicate atomic file */ 1247 FI_VOLATILE_FILE, /* indicate volatile file */ 1248 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */ 1249 FI_DROP_CACHE, /* drop dirty page cache */ 1250 FI_DATA_EXIST, /* indicate data exists */ 1251 FI_INLINE_DOTS, /* indicate inline dot dentries */ 1252}; 1253 1254static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) 1255{ 1256 if (!test_bit(flag, &fi->flags)) 1257 set_bit(flag, &fi->flags); 1258} 1259 1260static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) 1261{ 1262 return test_bit(flag, &fi->flags); 1263} 1264 1265static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) 1266{ 1267 if (test_bit(flag, &fi->flags)) 1268 clear_bit(flag, &fi->flags); 1269} 1270 1271static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) 1272{ 1273 fi->i_acl_mode = mode; 1274 set_inode_flag(fi, FI_ACL_MODE); 1275} 1276 1277static inline void get_inline_info(struct f2fs_inode_info *fi, 1278 struct f2fs_inode *ri) 1279{ 1280 if (ri->i_inline & F2FS_INLINE_XATTR) 1281 set_inode_flag(fi, FI_INLINE_XATTR); 1282 if (ri->i_inline & F2FS_INLINE_DATA) 1283 set_inode_flag(fi, FI_INLINE_DATA); 1284 if (ri->i_inline & F2FS_INLINE_DENTRY) 1285 set_inode_flag(fi, FI_INLINE_DENTRY); 1286 if (ri->i_inline & F2FS_DATA_EXIST) 1287 set_inode_flag(fi, FI_DATA_EXIST); 1288 if (ri->i_inline & F2FS_INLINE_DOTS) 1289 set_inode_flag(fi, FI_INLINE_DOTS); 1290} 1291 1292static inline void set_raw_inline(struct f2fs_inode_info *fi, 1293 struct f2fs_inode *ri) 1294{ 1295 ri->i_inline = 0; 1296 1297 if (is_inode_flag_set(fi, FI_INLINE_XATTR)) 1298 ri->i_inline |= F2FS_INLINE_XATTR; 1299 if (is_inode_flag_set(fi, FI_INLINE_DATA)) 1300 ri->i_inline |= F2FS_INLINE_DATA; 1301 if (is_inode_flag_set(fi, FI_INLINE_DENTRY)) 1302 ri->i_inline |= F2FS_INLINE_DENTRY; 1303 if (is_inode_flag_set(fi, FI_DATA_EXIST)) 1304 ri->i_inline |= F2FS_DATA_EXIST; 1305 if (is_inode_flag_set(fi, FI_INLINE_DOTS)) 1306 ri->i_inline |= F2FS_INLINE_DOTS; 1307} 1308 1309static inline int f2fs_has_inline_xattr(struct inode *inode) 1310{ 1311 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR); 1312} 1313 1314static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) 1315{ 1316 if (f2fs_has_inline_xattr(&fi->vfs_inode)) 1317 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; 1318 return DEF_ADDRS_PER_INODE; 1319} 1320 1321static inline void *inline_xattr_addr(struct page *page) 1322{ 1323 struct f2fs_inode *ri = F2FS_INODE(page); 1324 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - 1325 F2FS_INLINE_XATTR_ADDRS]); 1326} 1327 1328static inline int inline_xattr_size(struct inode *inode) 1329{ 1330 if (f2fs_has_inline_xattr(inode)) 1331 return F2FS_INLINE_XATTR_ADDRS << 2; 1332 else 1333 return 0; 1334} 1335 1336static inline int f2fs_has_inline_data(struct inode *inode) 1337{ 1338 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); 1339} 1340 1341static inline void f2fs_clear_inline_inode(struct inode *inode) 1342{ 1343 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); 1344 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST); 1345} 1346 1347static inline int f2fs_exist_data(struct inode *inode) 1348{ 1349 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST); 1350} 1351 1352static inline int f2fs_has_inline_dots(struct inode *inode) 1353{ 1354 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS); 1355} 1356 1357static inline bool f2fs_is_atomic_file(struct inode *inode) 1358{ 1359 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE); 1360} 1361 1362static inline bool f2fs_is_volatile_file(struct inode *inode) 1363{ 1364 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE); 1365} 1366 1367static inline bool f2fs_is_first_block_written(struct inode *inode) 1368{ 1369 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN); 1370} 1371 1372static inline bool f2fs_is_drop_cache(struct inode *inode) 1373{ 1374 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE); 1375} 1376 1377static inline void *inline_data_addr(struct page *page) 1378{ 1379 struct f2fs_inode *ri = F2FS_INODE(page); 1380 return (void *)&(ri->i_addr[1]); 1381} 1382 1383static inline int f2fs_has_inline_dentry(struct inode *inode) 1384{ 1385 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY); 1386} 1387 1388static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page) 1389{ 1390 if (!f2fs_has_inline_dentry(dir)) 1391 kunmap(page); 1392} 1393 1394static inline int f2fs_readonly(struct super_block *sb) 1395{ 1396 return sb->s_flags & MS_RDONLY; 1397} 1398 1399static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) 1400{ 1401 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); 1402} 1403 1404static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) 1405{ 1406 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); 1407 sbi->sb->s_flags |= MS_RDONLY; 1408} 1409 1410#define get_inode_mode(i) \ 1411 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ 1412 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) 1413 1414/* get offset of first page in next direct node */ 1415#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \ 1416 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \ 1417 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \ 1418 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi)) 1419 1420/* 1421 * file.c 1422 */ 1423int f2fs_sync_file(struct file *, loff_t, loff_t, int); 1424void truncate_data_blocks(struct dnode_of_data *); 1425int truncate_blocks(struct inode *, u64, bool); 1426void f2fs_truncate(struct inode *); 1427int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 1428int f2fs_setattr(struct dentry *, struct iattr *); 1429int truncate_hole(struct inode *, pgoff_t, pgoff_t); 1430int truncate_data_blocks_range(struct dnode_of_data *, int); 1431long f2fs_ioctl(struct file *, unsigned int, unsigned long); 1432long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); 1433 1434/* 1435 * inode.c 1436 */ 1437void f2fs_set_inode_flags(struct inode *); 1438struct inode *f2fs_iget(struct super_block *, unsigned long); 1439int try_to_free_nats(struct f2fs_sb_info *, int); 1440void update_inode(struct inode *, struct page *); 1441void update_inode_page(struct inode *); 1442int f2fs_write_inode(struct inode *, struct writeback_control *); 1443void f2fs_evict_inode(struct inode *); 1444void handle_failed_inode(struct inode *); 1445 1446/* 1447 * namei.c 1448 */ 1449struct dentry *f2fs_get_parent(struct dentry *child); 1450 1451/* 1452 * dir.c 1453 */ 1454extern unsigned char f2fs_filetype_table[F2FS_FT_MAX]; 1455void set_de_type(struct f2fs_dir_entry *, umode_t); 1456struct f2fs_dir_entry *find_target_dentry(struct qstr *, int *, 1457 struct f2fs_dentry_ptr *); 1458bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *, 1459 unsigned int); 1460void do_make_empty_dir(struct inode *, struct inode *, 1461 struct f2fs_dentry_ptr *); 1462struct page *init_inode_metadata(struct inode *, struct inode *, 1463 const struct qstr *, struct page *); 1464void update_parent_metadata(struct inode *, struct inode *, unsigned int); 1465int room_for_filename(const void *, int, int); 1466void f2fs_drop_nlink(struct inode *, struct inode *, struct page *); 1467struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, 1468 struct page **); 1469struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); 1470ino_t f2fs_inode_by_name(struct inode *, struct qstr *); 1471void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, 1472 struct page *, struct inode *); 1473int update_dent_inode(struct inode *, const struct qstr *); 1474void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *, 1475 const struct qstr *, f2fs_hash_t , unsigned int); 1476int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t, 1477 umode_t); 1478void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *, 1479 struct inode *); 1480int f2fs_do_tmpfile(struct inode *, struct inode *); 1481int f2fs_make_empty(struct inode *, struct inode *); 1482bool f2fs_empty_dir(struct inode *); 1483 1484static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) 1485{ 1486 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name, 1487 inode, inode->i_ino, inode->i_mode); 1488} 1489 1490/* 1491 * super.c 1492 */ 1493int f2fs_sync_fs(struct super_block *, int); 1494extern __printf(3, 4) 1495void f2fs_msg(struct super_block *, const char *, const char *, ...); 1496 1497/* 1498 * hash.c 1499 */ 1500f2fs_hash_t f2fs_dentry_hash(const struct qstr *); 1501 1502/* 1503 * node.c 1504 */ 1505struct dnode_of_data; 1506struct node_info; 1507 1508bool available_free_memory(struct f2fs_sb_info *, int); 1509bool is_checkpointed_node(struct f2fs_sb_info *, nid_t); 1510bool has_fsynced_inode(struct f2fs_sb_info *, nid_t); 1511bool need_inode_block_update(struct f2fs_sb_info *, nid_t); 1512void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); 1513int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); 1514int truncate_inode_blocks(struct inode *, pgoff_t); 1515int truncate_xattr_node(struct inode *, struct page *); 1516int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); 1517void remove_inode_page(struct inode *); 1518struct page *new_inode_page(struct inode *); 1519struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); 1520void ra_node_page(struct f2fs_sb_info *, nid_t); 1521struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); 1522struct page *get_node_page_ra(struct page *, int); 1523void sync_inode_page(struct dnode_of_data *); 1524int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); 1525bool alloc_nid(struct f2fs_sb_info *, nid_t *); 1526void alloc_nid_done(struct f2fs_sb_info *, nid_t); 1527void alloc_nid_failed(struct f2fs_sb_info *, nid_t); 1528void recover_inline_xattr(struct inode *, struct page *); 1529void recover_xattr_data(struct inode *, struct page *, block_t); 1530int recover_inode_page(struct f2fs_sb_info *, struct page *); 1531int restore_node_summary(struct f2fs_sb_info *, unsigned int, 1532 struct f2fs_summary_block *); 1533void flush_nat_entries(struct f2fs_sb_info *); 1534int build_node_manager(struct f2fs_sb_info *); 1535void destroy_node_manager(struct f2fs_sb_info *); 1536int __init create_node_manager_caches(void); 1537void destroy_node_manager_caches(void); 1538 1539/* 1540 * segment.c 1541 */ 1542void register_inmem_page(struct inode *, struct page *); 1543void commit_inmem_pages(struct inode *, bool); 1544void f2fs_balance_fs(struct f2fs_sb_info *); 1545void f2fs_balance_fs_bg(struct f2fs_sb_info *); 1546int f2fs_issue_flush(struct f2fs_sb_info *); 1547int create_flush_cmd_control(struct f2fs_sb_info *); 1548void destroy_flush_cmd_control(struct f2fs_sb_info *); 1549void invalidate_blocks(struct f2fs_sb_info *, block_t); 1550void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); 1551void clear_prefree_segments(struct f2fs_sb_info *); 1552void release_discard_addrs(struct f2fs_sb_info *); 1553void discard_next_dnode(struct f2fs_sb_info *, block_t); 1554int npages_for_summary_flush(struct f2fs_sb_info *, bool); 1555void allocate_new_segments(struct f2fs_sb_info *); 1556int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *); 1557struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); 1558void write_meta_page(struct f2fs_sb_info *, struct page *); 1559void write_node_page(struct f2fs_sb_info *, struct page *, 1560 unsigned int, struct f2fs_io_info *); 1561void write_data_page(struct page *, struct dnode_of_data *, 1562 struct f2fs_io_info *); 1563void rewrite_data_page(struct page *, struct f2fs_io_info *); 1564void recover_data_page(struct f2fs_sb_info *, struct page *, 1565 struct f2fs_summary *, block_t, block_t); 1566void allocate_data_block(struct f2fs_sb_info *, struct page *, 1567 block_t, block_t *, struct f2fs_summary *, int); 1568void f2fs_wait_on_page_writeback(struct page *, enum page_type); 1569void write_data_summaries(struct f2fs_sb_info *, block_t); 1570void write_node_summaries(struct f2fs_sb_info *, block_t); 1571int lookup_journal_in_cursum(struct f2fs_summary_block *, 1572 int, unsigned int, int); 1573void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *); 1574int build_segment_manager(struct f2fs_sb_info *); 1575void destroy_segment_manager(struct f2fs_sb_info *); 1576int __init create_segment_manager_caches(void); 1577void destroy_segment_manager_caches(void); 1578 1579/* 1580 * checkpoint.c 1581 */ 1582struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); 1583struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); 1584int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int); 1585void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t); 1586long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); 1587void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type); 1588void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type); 1589void release_dirty_inode(struct f2fs_sb_info *); 1590bool exist_written_data(struct f2fs_sb_info *, nid_t, int); 1591int acquire_orphan_inode(struct f2fs_sb_info *); 1592void release_orphan_inode(struct f2fs_sb_info *); 1593void add_orphan_inode(struct f2fs_sb_info *, nid_t); 1594void remove_orphan_inode(struct f2fs_sb_info *, nid_t); 1595void recover_orphan_inodes(struct f2fs_sb_info *); 1596int get_valid_checkpoint(struct f2fs_sb_info *); 1597void update_dirty_page(struct inode *, struct page *); 1598void add_dirty_dir_inode(struct inode *); 1599void remove_dirty_dir_inode(struct inode *); 1600void sync_dirty_dir_inodes(struct f2fs_sb_info *); 1601void write_checkpoint(struct f2fs_sb_info *, struct cp_control *); 1602void init_ino_entry_info(struct f2fs_sb_info *); 1603int __init create_checkpoint_caches(void); 1604void destroy_checkpoint_caches(void); 1605 1606/* 1607 * data.c 1608 */ 1609void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); 1610int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, 1611 struct f2fs_io_info *); 1612void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, 1613 struct f2fs_io_info *); 1614void set_data_blkaddr(struct dnode_of_data *); 1615int reserve_new_block(struct dnode_of_data *); 1616int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); 1617void f2fs_shrink_extent_tree(struct f2fs_sb_info *, int); 1618void f2fs_destroy_extent_tree(struct inode *); 1619void f2fs_init_extent_cache(struct inode *, struct f2fs_extent *); 1620void f2fs_update_extent_cache(struct dnode_of_data *); 1621void f2fs_preserve_extent_tree(struct inode *); 1622struct page *find_data_page(struct inode *, pgoff_t, bool); 1623struct page *get_lock_data_page(struct inode *, pgoff_t); 1624struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); 1625int do_write_data_page(struct page *, struct f2fs_io_info *); 1626int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64); 1627void init_extent_cache_info(struct f2fs_sb_info *); 1628int __init create_extent_cache(void); 1629void destroy_extent_cache(void); 1630void f2fs_invalidate_page(struct page *, unsigned int, unsigned int); 1631int f2fs_release_page(struct page *, gfp_t); 1632 1633/* 1634 * gc.c 1635 */ 1636int start_gc_thread(struct f2fs_sb_info *); 1637void stop_gc_thread(struct f2fs_sb_info *); 1638block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); 1639int f2fs_gc(struct f2fs_sb_info *); 1640void build_gc_manager(struct f2fs_sb_info *); 1641 1642/* 1643 * recovery.c 1644 */ 1645int recover_fsync_data(struct f2fs_sb_info *); 1646bool space_for_roll_forward(struct f2fs_sb_info *); 1647 1648/* 1649 * debug.c 1650 */ 1651#ifdef CONFIG_F2FS_STAT_FS 1652struct f2fs_stat_info { 1653 struct list_head stat_list; 1654 struct f2fs_sb_info *sbi; 1655 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; 1656 int main_area_segs, main_area_sections, main_area_zones; 1657 int hit_ext, total_ext, ext_tree, ext_node; 1658 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; 1659 int nats, dirty_nats, sits, dirty_sits, fnids; 1660 int total_count, utilization; 1661 int bg_gc, inline_inode, inline_dir, inmem_pages, wb_pages; 1662 unsigned int valid_count, valid_node_count, valid_inode_count; 1663 unsigned int bimodal, avg_vblocks; 1664 int util_free, util_valid, util_invalid; 1665 int rsvd_segs, overp_segs; 1666 int dirty_count, node_pages, meta_pages; 1667 int prefree_count, call_count, cp_count; 1668 int tot_segs, node_segs, data_segs, free_segs, free_secs; 1669 int bg_node_segs, bg_data_segs; 1670 int tot_blks, data_blks, node_blks; 1671 int bg_data_blks, bg_node_blks; 1672 int curseg[NR_CURSEG_TYPE]; 1673 int cursec[NR_CURSEG_TYPE]; 1674 int curzone[NR_CURSEG_TYPE]; 1675 1676 unsigned int segment_count[2]; 1677 unsigned int block_count[2]; 1678 unsigned int inplace_count; 1679 unsigned base_mem, cache_mem, page_mem; 1680}; 1681 1682static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) 1683{ 1684 return (struct f2fs_stat_info *)sbi->stat_info; 1685} 1686 1687#define stat_inc_cp_count(si) ((si)->cp_count++) 1688#define stat_inc_call_count(si) ((si)->call_count++) 1689#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) 1690#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) 1691#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) 1692#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) 1693#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) 1694#define stat_inc_inline_inode(inode) \ 1695 do { \ 1696 if (f2fs_has_inline_data(inode)) \ 1697 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \ 1698 } while (0) 1699#define stat_dec_inline_inode(inode) \ 1700 do { \ 1701 if (f2fs_has_inline_data(inode)) \ 1702 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \ 1703 } while (0) 1704#define stat_inc_inline_dir(inode) \ 1705 do { \ 1706 if (f2fs_has_inline_dentry(inode)) \ 1707 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \ 1708 } while (0) 1709#define stat_dec_inline_dir(inode) \ 1710 do { \ 1711 if (f2fs_has_inline_dentry(inode)) \ 1712 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \ 1713 } while (0) 1714#define stat_inc_seg_type(sbi, curseg) \ 1715 ((sbi)->segment_count[(curseg)->alloc_type]++) 1716#define stat_inc_block_count(sbi, curseg) \ 1717 ((sbi)->block_count[(curseg)->alloc_type]++) 1718#define stat_inc_inplace_blocks(sbi) \ 1719 (atomic_inc(&(sbi)->inplace_count)) 1720#define stat_inc_seg_count(sbi, type, gc_type) \ 1721 do { \ 1722 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1723 (si)->tot_segs++; \ 1724 if (type == SUM_TYPE_DATA) { \ 1725 si->data_segs++; \ 1726 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \ 1727 } else { \ 1728 si->node_segs++; \ 1729 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \ 1730 } \ 1731 } while (0) 1732 1733#define stat_inc_tot_blk_count(si, blks) \ 1734 (si->tot_blks += (blks)) 1735 1736#define stat_inc_data_blk_count(sbi, blks, gc_type) \ 1737 do { \ 1738 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1739 stat_inc_tot_blk_count(si, blks); \ 1740 si->data_blks += (blks); \ 1741 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \ 1742 } while (0) 1743 1744#define stat_inc_node_blk_count(sbi, blks, gc_type) \ 1745 do { \ 1746 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1747 stat_inc_tot_blk_count(si, blks); \ 1748 si->node_blks += (blks); \ 1749 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \ 1750 } while (0) 1751 1752int f2fs_build_stats(struct f2fs_sb_info *); 1753void f2fs_destroy_stats(struct f2fs_sb_info *); 1754void __init f2fs_create_root_stats(void); 1755void f2fs_destroy_root_stats(void); 1756#else 1757#define stat_inc_cp_count(si) 1758#define stat_inc_call_count(si) 1759#define stat_inc_bggc_count(si) 1760#define stat_inc_dirty_dir(sbi) 1761#define stat_dec_dirty_dir(sbi) 1762#define stat_inc_total_hit(sb) 1763#define stat_inc_read_hit(sb) 1764#define stat_inc_inline_inode(inode) 1765#define stat_dec_inline_inode(inode) 1766#define stat_inc_inline_dir(inode) 1767#define stat_dec_inline_dir(inode) 1768#define stat_inc_seg_type(sbi, curseg) 1769#define stat_inc_block_count(sbi, curseg) 1770#define stat_inc_inplace_blocks(sbi) 1771#define stat_inc_seg_count(sbi, type, gc_type) 1772#define stat_inc_tot_blk_count(si, blks) 1773#define stat_inc_data_blk_count(sbi, blks, gc_type) 1774#define stat_inc_node_blk_count(sbi, blks, gc_type) 1775 1776static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } 1777static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } 1778static inline void __init f2fs_create_root_stats(void) { } 1779static inline void f2fs_destroy_root_stats(void) { } 1780#endif 1781 1782extern const struct file_operations f2fs_dir_operations; 1783extern const struct file_operations f2fs_file_operations; 1784extern const struct inode_operations f2fs_file_inode_operations; 1785extern const struct address_space_operations f2fs_dblock_aops; 1786extern const struct address_space_operations f2fs_node_aops; 1787extern const struct address_space_operations f2fs_meta_aops; 1788extern const struct inode_operations f2fs_dir_inode_operations; 1789extern const struct inode_operations f2fs_symlink_inode_operations; 1790extern const struct inode_operations f2fs_special_inode_operations; 1791extern struct kmem_cache *inode_entry_slab; 1792 1793/* 1794 * inline.c 1795 */ 1796bool f2fs_may_inline(struct inode *); 1797void read_inline_data(struct page *, struct page *); 1798bool truncate_inline_inode(struct page *, u64); 1799int f2fs_read_inline_data(struct inode *, struct page *); 1800int f2fs_convert_inline_page(struct dnode_of_data *, struct page *); 1801int f2fs_convert_inline_inode(struct inode *); 1802int f2fs_write_inline_data(struct inode *, struct page *); 1803bool recover_inline_data(struct inode *, struct page *); 1804struct f2fs_dir_entry *find_in_inline_dir(struct inode *, struct qstr *, 1805 struct page **); 1806struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **); 1807int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *); 1808int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *, 1809 nid_t, umode_t); 1810void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *, 1811 struct inode *, struct inode *); 1812bool f2fs_empty_inline_dir(struct inode *); 1813int f2fs_read_inline_dir(struct file *, struct dir_context *); 1814#endif 1815