4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
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.
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>
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)
27 #define f2fs_bug_on(sbi, condition) \
29 if (unlikely(condition)) { \
31 sbi->need_fsck = true; \
34 #define f2fs_down_write(x, y) down_write(x)
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_FLUSH_MERGE 0x00000200
50 #define F2FS_MOUNT_NOBARRIER 0x00000400
52 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
53 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
54 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
56 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
57 typecheck(unsigned long long, b) && \
58 ((long long)((a) - (b)) > 0))
60 typedef u32 block_t; /*
61 * should not change u32, since it is the on-disk block
62 * address format, __le32.
66 struct f2fs_mount_info {
70 #define CRCPOLY_LE 0xedb88320
72 static inline __u32 f2fs_crc32(void *buf, size_t len)
74 unsigned char *p = (unsigned char *)buf;
75 __u32 crc = F2FS_SUPER_MAGIC;
80 for (i = 0; i < 8; i++)
81 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
86 static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
88 return f2fs_crc32(buf, buf_size) == blk_crc;
92 * For checkpoint manager
100 * For CP/NAT/SIT/SSA readahead
109 /* for the list of ino */
111 ORPHAN_INO, /* for orphan ino list */
112 APPEND_INO, /* for append ino list */
113 UPDATE_INO, /* for update ino list */
114 MAX_INO_ENTRY, /* max. list */
118 struct list_head list; /* list head */
119 nid_t ino; /* inode number */
122 /* for the list of directory inodes */
123 struct dir_inode_entry {
124 struct list_head list; /* list head */
125 struct inode *inode; /* vfs inode pointer */
128 /* for the list of blockaddresses to be discarded */
129 struct discard_entry {
130 struct list_head list; /* list head */
131 block_t blkaddr; /* block address to be discarded */
132 int len; /* # of consecutive blocks of the discard */
135 /* for the list of fsync inodes, used only during recovery */
136 struct fsync_inode_entry {
137 struct list_head list; /* list head */
138 struct inode *inode; /* vfs inode pointer */
139 block_t blkaddr; /* block address locating the last inode */
142 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
143 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
145 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
146 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
147 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
148 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
150 static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
152 int before = nats_in_cursum(rs);
153 rs->n_nats = cpu_to_le16(before + i);
157 static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
159 int before = sits_in_cursum(rs);
160 rs->n_sits = cpu_to_le16(before + i);
164 static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
167 if (type == NAT_JOURNAL)
168 return nats_in_cursum(sum) + size <= NAT_JOURNAL_ENTRIES;
170 return sits_in_cursum(sum) + size <= SIT_JOURNAL_ENTRIES;
176 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
177 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
179 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
181 * ioctl commands in 32 bit emulation
183 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
184 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
188 * For INODE and NODE manager
191 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
192 * as its node offset to distinguish from index node blocks.
193 * But some bits are used to mark the node block.
195 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
198 ALLOC_NODE, /* allocate a new node page if needed */
199 LOOKUP_NODE, /* look up a node without readahead */
201 * look up a node with readahead called
206 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
208 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
210 /* for in-memory extent cache entry */
211 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
214 rwlock_t ext_lock; /* rwlock for consistency */
215 unsigned int fofs; /* start offset in a file */
216 u32 blk_addr; /* start block address of the extent */
217 unsigned int len; /* length of the extent */
221 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
223 #define FADVISE_COLD_BIT 0x01
224 #define FADVISE_LOST_PINO_BIT 0x02
226 #define DEF_DIR_LEVEL 0
228 struct f2fs_inode_info {
229 struct inode vfs_inode; /* serve a vfs inode */
230 unsigned long i_flags; /* keep an inode flags for ioctl */
231 unsigned char i_advise; /* use to give file attribute hints */
232 unsigned char i_dir_level; /* use for dentry level for large dir */
233 unsigned int i_current_depth; /* use only in directory structure */
234 unsigned int i_pino; /* parent inode number */
235 umode_t i_acl_mode; /* keep file acl mode temporarily */
237 /* Use below internally in f2fs*/
238 unsigned long flags; /* use to pass per-file flags */
239 struct rw_semaphore i_sem; /* protect fi info */
240 atomic_t dirty_pages; /* # of dirty pages */
241 f2fs_hash_t chash; /* hash value of given file name */
242 unsigned int clevel; /* maximum level of given file name */
243 nid_t i_xattr_nid; /* node id that contains xattrs */
244 unsigned long long xattr_ver; /* cp version of xattr modification */
245 struct extent_info ext; /* in-memory extent cache entry */
246 struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */
249 static inline void get_extent_info(struct extent_info *ext,
250 struct f2fs_extent i_ext)
252 write_lock(&ext->ext_lock);
253 ext->fofs = le32_to_cpu(i_ext.fofs);
254 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
255 ext->len = le32_to_cpu(i_ext.len);
256 write_unlock(&ext->ext_lock);
259 static inline void set_raw_extent(struct extent_info *ext,
260 struct f2fs_extent *i_ext)
262 read_lock(&ext->ext_lock);
263 i_ext->fofs = cpu_to_le32(ext->fofs);
264 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
265 i_ext->len = cpu_to_le32(ext->len);
266 read_unlock(&ext->ext_lock);
269 struct f2fs_nm_info {
270 block_t nat_blkaddr; /* base disk address of NAT */
271 nid_t max_nid; /* maximum possible node ids */
272 nid_t available_nids; /* maximum available node ids */
273 nid_t next_scan_nid; /* the next nid to be scanned */
274 unsigned int ram_thresh; /* control the memory footprint */
276 /* NAT cache management */
277 struct radix_tree_root nat_root;/* root of the nat entry cache */
278 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
279 unsigned int nat_cnt; /* the # of cached nat entries */
280 struct list_head nat_entries; /* cached nat entry list (clean) */
281 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */
282 struct list_head nat_entry_set; /* nat entry set list */
283 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
285 /* free node ids management */
286 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
287 struct list_head free_nid_list; /* a list for free nids */
288 spinlock_t free_nid_list_lock; /* protect free nid list */
289 unsigned int fcnt; /* the number of free node id */
290 struct mutex build_lock; /* lock for build free nids */
293 char *nat_bitmap; /* NAT bitmap pointer */
294 int bitmap_size; /* bitmap size */
298 * this structure is used as one of function parameters.
299 * all the information are dedicated to a given direct node block determined
300 * by the data offset in a file.
302 struct dnode_of_data {
303 struct inode *inode; /* vfs inode pointer */
304 struct page *inode_page; /* its inode page, NULL is possible */
305 struct page *node_page; /* cached direct node page */
306 nid_t nid; /* node id of the direct node block */
307 unsigned int ofs_in_node; /* data offset in the node page */
308 bool inode_page_locked; /* inode page is locked or not */
309 block_t data_blkaddr; /* block address of the node block */
312 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
313 struct page *ipage, struct page *npage, nid_t nid)
315 memset(dn, 0, sizeof(*dn));
317 dn->inode_page = ipage;
318 dn->node_page = npage;
325 * By default, there are 6 active log areas across the whole main area.
326 * When considering hot and cold data separation to reduce cleaning overhead,
327 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
329 * In the current design, you should not change the numbers intentionally.
330 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
331 * logs individually according to the underlying devices. (default: 6)
332 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
333 * data and 8 for node logs.
335 #define NR_CURSEG_DATA_TYPE (3)
336 #define NR_CURSEG_NODE_TYPE (3)
337 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
340 CURSEG_HOT_DATA = 0, /* directory entry blocks */
341 CURSEG_WARM_DATA, /* data blocks */
342 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
343 CURSEG_HOT_NODE, /* direct node blocks of directory files */
344 CURSEG_WARM_NODE, /* direct node blocks of normal files */
345 CURSEG_COLD_NODE, /* indirect node blocks */
350 struct completion wait;
351 struct llist_node llnode;
355 struct flush_cmd_control {
356 struct task_struct *f2fs_issue_flush; /* flush thread */
357 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
358 struct llist_head issue_list; /* list for command issue */
359 struct llist_node *dispatch_list; /* list for command dispatch */
362 struct f2fs_sm_info {
363 struct sit_info *sit_info; /* whole segment information */
364 struct free_segmap_info *free_info; /* free segment information */
365 struct dirty_seglist_info *dirty_info; /* dirty segment information */
366 struct curseg_info *curseg_array; /* active segment information */
368 block_t seg0_blkaddr; /* block address of 0'th segment */
369 block_t main_blkaddr; /* start block address of main area */
370 block_t ssa_blkaddr; /* start block address of SSA area */
372 unsigned int segment_count; /* total # of segments */
373 unsigned int main_segments; /* # of segments in main area */
374 unsigned int reserved_segments; /* # of reserved segments */
375 unsigned int ovp_segments; /* # of overprovision segments */
377 /* a threshold to reclaim prefree segments */
378 unsigned int rec_prefree_segments;
380 /* for small discard management */
381 struct list_head discard_list; /* 4KB discard list */
382 int nr_discards; /* # of discards in the list */
383 int max_discards; /* max. discards to be issued */
385 struct list_head sit_entry_set; /* sit entry set list */
387 unsigned int ipu_policy; /* in-place-update policy */
388 unsigned int min_ipu_util; /* in-place-update threshold */
389 unsigned int min_fsync_blocks; /* threshold for fsync */
391 /* for flush command control */
392 struct flush_cmd_control *cmd_control_info;
400 * COUNT_TYPE for monitoring
402 * f2fs monitors the number of several block types such as on-writeback,
403 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
414 * The below are the page types of bios used in submit_bio().
415 * The available types are:
416 * DATA User data pages. It operates as async mode.
417 * NODE Node pages. It operates as async mode.
418 * META FS metadata pages such as SIT, NAT, CP.
419 * NR_PAGE_TYPE The number of page types.
420 * META_FLUSH Make sure the previous pages are written
421 * with waiting the bio's completion
422 * ... Only can be used with META.
424 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
433 struct f2fs_io_info {
434 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
435 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
438 #define is_read_io(rw) (((rw) & 1) == READ)
439 struct f2fs_bio_info {
440 struct f2fs_sb_info *sbi; /* f2fs superblock */
441 struct bio *bio; /* bios to merge */
442 sector_t last_block_in_bio; /* last block number */
443 struct f2fs_io_info fio; /* store buffered io info. */
444 struct rw_semaphore io_rwsem; /* blocking op for bio */
447 struct f2fs_sb_info {
448 struct super_block *sb; /* pointer to VFS super block */
449 struct proc_dir_entry *s_proc; /* proc entry */
450 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
451 struct f2fs_super_block *raw_super; /* raw super block pointer */
452 int s_dirty; /* dirty flag for checkpoint */
453 bool need_fsck; /* need fsck.f2fs to fix */
455 /* for node-related operations */
456 struct f2fs_nm_info *nm_info; /* node manager */
457 struct inode *node_inode; /* cache node blocks */
459 /* for segment-related operations */
460 struct f2fs_sm_info *sm_info; /* segment manager */
462 /* for bio operations */
463 struct f2fs_bio_info read_io; /* for read bios */
464 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
465 struct completion *wait_io; /* for completion bios */
468 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
469 struct inode *meta_inode; /* cache meta blocks */
470 struct mutex cp_mutex; /* checkpoint procedure lock */
471 struct rw_semaphore cp_rwsem; /* blocking FS operations */
472 struct rw_semaphore node_write; /* locking node writes */
473 struct mutex writepages; /* mutex for writepages() */
474 bool por_doing; /* recovery is doing or not */
475 wait_queue_head_t cp_wait;
477 /* for inode management */
478 struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */
479 spinlock_t ino_lock[MAX_INO_ENTRY]; /* for ino entry lock */
480 struct list_head ino_list[MAX_INO_ENTRY]; /* inode list head */
482 /* for orphan inode, use 0'th array */
483 unsigned int n_orphans; /* # of orphan inodes */
484 unsigned int max_orphans; /* max orphan inodes */
486 /* for directory inode management */
487 struct list_head dir_inode_list; /* dir inode list */
488 spinlock_t dir_inode_lock; /* for dir inode list lock */
490 /* basic filesystem units */
491 unsigned int log_sectors_per_block; /* log2 sectors per block */
492 unsigned int log_blocksize; /* log2 block size */
493 unsigned int blocksize; /* block size */
494 unsigned int root_ino_num; /* root inode number*/
495 unsigned int node_ino_num; /* node inode number*/
496 unsigned int meta_ino_num; /* meta inode number*/
497 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
498 unsigned int blocks_per_seg; /* blocks per segment */
499 unsigned int segs_per_sec; /* segments per section */
500 unsigned int secs_per_zone; /* sections per zone */
501 unsigned int total_sections; /* total section count */
502 unsigned int total_node_count; /* total node block count */
503 unsigned int total_valid_node_count; /* valid node block count */
504 unsigned int total_valid_inode_count; /* valid inode count */
505 int active_logs; /* # of active logs */
506 int dir_level; /* directory level */
508 block_t user_block_count; /* # of user blocks */
509 block_t total_valid_block_count; /* # of valid blocks */
510 block_t alloc_valid_block_count; /* # of allocated blocks */
511 block_t last_valid_block_count; /* for recovery */
512 u32 s_next_generation; /* for NFS support */
513 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
515 struct f2fs_mount_info mount_opt; /* mount options */
517 /* for cleaning operations */
518 struct mutex gc_mutex; /* mutex for GC */
519 struct f2fs_gc_kthread *gc_thread; /* GC thread */
520 unsigned int cur_victim_sec; /* current victim section num */
522 /* maximum # of trials to find a victim segment for SSR and GC */
523 unsigned int max_victim_search;
526 * for stat information.
527 * one is for the LFS mode, and the other is for the SSR mode.
529 #ifdef CONFIG_F2FS_STAT_FS
530 struct f2fs_stat_info *stat_info; /* FS status information */
531 unsigned int segment_count[2]; /* # of allocated segments */
532 unsigned int block_count[2]; /* # of allocated blocks */
533 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
534 int inline_inode; /* # of inline_data inodes */
535 int bg_gc; /* background gc calls */
536 unsigned int n_dirty_dirs; /* # of dir inodes */
538 unsigned int last_victim[2]; /* last victim segment # */
539 spinlock_t stat_lock; /* lock for stat operations */
541 /* For sysfs suppport */
542 struct kobject s_kobj;
543 struct completion s_kobj_unregister;
549 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
551 return container_of(inode, struct f2fs_inode_info, vfs_inode);
554 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
556 return sb->s_fs_info;
559 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
561 return F2FS_SB(inode->i_sb);
564 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
566 return F2FS_I_SB(mapping->host);
569 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
571 return F2FS_M_SB(page->mapping);
574 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
576 return (struct f2fs_super_block *)(sbi->raw_super);
579 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
581 return (struct f2fs_checkpoint *)(sbi->ckpt);
584 static inline struct f2fs_node *F2FS_NODE(struct page *page)
586 return (struct f2fs_node *)page_address(page);
589 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
591 return &((struct f2fs_node *)page_address(page))->i;
594 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
596 return (struct f2fs_nm_info *)(sbi->nm_info);
599 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
601 return (struct f2fs_sm_info *)(sbi->sm_info);
604 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
606 return (struct sit_info *)(SM_I(sbi)->sit_info);
609 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
611 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
614 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
616 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
619 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
621 return sbi->meta_inode->i_mapping;
624 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
626 return sbi->node_inode->i_mapping;
629 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
634 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
639 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
641 return le64_to_cpu(cp->checkpoint_ver);
644 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
646 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
647 return ckpt_flags & f;
650 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
652 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
654 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
657 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
659 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
661 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
664 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
666 down_read(&sbi->cp_rwsem);
669 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
671 up_read(&sbi->cp_rwsem);
674 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
676 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
679 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
681 up_write(&sbi->cp_rwsem);
685 * Check whether the given nid is within node id range.
687 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
689 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
691 if (unlikely(nid >= NM_I(sbi)->max_nid))
696 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
699 * Check whether the inode has blocks or not
701 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
703 if (F2FS_I(inode)->i_xattr_nid)
704 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
706 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
709 static inline bool f2fs_has_xattr_block(unsigned int ofs)
711 return ofs == XATTR_NODE_OFFSET;
714 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
715 struct inode *inode, blkcnt_t count)
717 block_t valid_block_count;
719 spin_lock(&sbi->stat_lock);
721 sbi->total_valid_block_count + (block_t)count;
722 if (unlikely(valid_block_count > sbi->user_block_count)) {
723 spin_unlock(&sbi->stat_lock);
726 inode->i_blocks += count;
727 sbi->total_valid_block_count = valid_block_count;
728 sbi->alloc_valid_block_count += (block_t)count;
729 spin_unlock(&sbi->stat_lock);
733 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
737 spin_lock(&sbi->stat_lock);
738 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
739 f2fs_bug_on(sbi, inode->i_blocks < count);
740 inode->i_blocks -= count;
741 sbi->total_valid_block_count -= (block_t)count;
742 spin_unlock(&sbi->stat_lock);
745 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
747 atomic_inc(&sbi->nr_pages[count_type]);
748 F2FS_SET_SB_DIRT(sbi);
751 static inline void inode_inc_dirty_pages(struct inode *inode)
753 atomic_inc(&F2FS_I(inode)->dirty_pages);
754 if (S_ISDIR(inode->i_mode))
755 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
758 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
760 atomic_dec(&sbi->nr_pages[count_type]);
763 static inline void inode_dec_dirty_pages(struct inode *inode)
765 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
768 atomic_dec(&F2FS_I(inode)->dirty_pages);
770 if (S_ISDIR(inode->i_mode))
771 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
774 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
776 return atomic_read(&sbi->nr_pages[count_type]);
779 static inline int get_dirty_pages(struct inode *inode)
781 return atomic_read(&F2FS_I(inode)->dirty_pages);
784 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
786 unsigned int pages_per_sec = sbi->segs_per_sec *
787 (1 << sbi->log_blocks_per_seg);
788 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
789 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
792 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
794 return sbi->total_valid_block_count;
797 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
799 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
801 /* return NAT or SIT bitmap */
802 if (flag == NAT_BITMAP)
803 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
804 else if (flag == SIT_BITMAP)
805 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
810 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
812 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
815 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
816 if (flag == NAT_BITMAP)
817 return &ckpt->sit_nat_version_bitmap;
819 return (unsigned char *)ckpt + F2FS_BLKSIZE;
821 offset = (flag == NAT_BITMAP) ?
822 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
823 return &ckpt->sit_nat_version_bitmap + offset;
827 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
830 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
831 unsigned long long ckpt_version = cur_cp_version(ckpt);
833 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
836 * odd numbered checkpoint should at cp segment 0
837 * and even segment must be at cp segment 1
839 if (!(ckpt_version & 1))
840 start_addr += sbi->blocks_per_seg;
845 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
847 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
850 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
853 block_t valid_block_count;
854 unsigned int valid_node_count;
856 spin_lock(&sbi->stat_lock);
858 valid_block_count = sbi->total_valid_block_count + 1;
859 if (unlikely(valid_block_count > sbi->user_block_count)) {
860 spin_unlock(&sbi->stat_lock);
864 valid_node_count = sbi->total_valid_node_count + 1;
865 if (unlikely(valid_node_count > sbi->total_node_count)) {
866 spin_unlock(&sbi->stat_lock);
873 sbi->alloc_valid_block_count++;
874 sbi->total_valid_node_count++;
875 sbi->total_valid_block_count++;
876 spin_unlock(&sbi->stat_lock);
881 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
884 spin_lock(&sbi->stat_lock);
886 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
887 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
888 f2fs_bug_on(sbi, !inode->i_blocks);
891 sbi->total_valid_node_count--;
892 sbi->total_valid_block_count--;
894 spin_unlock(&sbi->stat_lock);
897 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
899 return sbi->total_valid_node_count;
902 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
904 spin_lock(&sbi->stat_lock);
905 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
906 sbi->total_valid_inode_count++;
907 spin_unlock(&sbi->stat_lock);
910 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
912 spin_lock(&sbi->stat_lock);
913 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
914 sbi->total_valid_inode_count--;
915 spin_unlock(&sbi->stat_lock);
918 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
920 return sbi->total_valid_inode_count;
923 static inline void f2fs_put_page(struct page *page, int unlock)
929 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
932 page_cache_release(page);
935 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
938 f2fs_put_page(dn->node_page, 1);
939 if (dn->inode_page && dn->node_page != dn->inode_page)
940 f2fs_put_page(dn->inode_page, 0);
941 dn->node_page = NULL;
942 dn->inode_page = NULL;
945 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
948 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
951 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
956 entry = kmem_cache_alloc(cachep, flags);
965 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
967 static inline bool IS_INODE(struct page *page)
969 struct f2fs_node *p = F2FS_NODE(page);
970 return RAW_IS_INODE(p);
973 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
975 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
978 static inline block_t datablock_addr(struct page *node_page,
981 struct f2fs_node *raw_node;
983 raw_node = F2FS_NODE(node_page);
984 addr_array = blkaddr_in_node(raw_node);
985 return le32_to_cpu(addr_array[offset]);
988 static inline int f2fs_test_bit(unsigned int nr, char *addr)
993 mask = 1 << (7 - (nr & 0x07));
997 static inline int f2fs_set_bit(unsigned int nr, char *addr)
1003 mask = 1 << (7 - (nr & 0x07));
1009 static inline int f2fs_clear_bit(unsigned int nr, char *addr)
1015 mask = 1 << (7 - (nr & 0x07));
1021 /* used for f2fs_inode_info->flags */
1023 FI_NEW_INODE, /* indicate newly allocated inode */
1024 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1025 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1026 FI_INC_LINK, /* need to increment i_nlink */
1027 FI_ACL_MODE, /* indicate acl mode */
1028 FI_NO_ALLOC, /* should not allocate any blocks */
1029 FI_UPDATE_DIR, /* should update inode block for consistency */
1030 FI_DELAY_IPUT, /* used for the recovery */
1031 FI_NO_EXTENT, /* not to use the extent cache */
1032 FI_INLINE_XATTR, /* used for inline xattr */
1033 FI_INLINE_DATA, /* used for inline data*/
1034 FI_APPEND_WRITE, /* inode has appended data */
1035 FI_UPDATE_WRITE, /* inode has in-place-update data */
1036 FI_NEED_IPU, /* used fo ipu for fdatasync */
1039 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1041 if (!test_bit(flag, &fi->flags))
1042 set_bit(flag, &fi->flags);
1045 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1047 return test_bit(flag, &fi->flags);
1050 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1052 if (test_bit(flag, &fi->flags))
1053 clear_bit(flag, &fi->flags);
1056 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1058 fi->i_acl_mode = mode;
1059 set_inode_flag(fi, FI_ACL_MODE);
1062 static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1064 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
1065 clear_inode_flag(fi, FI_ACL_MODE);
1071 static inline void get_inline_info(struct f2fs_inode_info *fi,
1072 struct f2fs_inode *ri)
1074 if (ri->i_inline & F2FS_INLINE_XATTR)
1075 set_inode_flag(fi, FI_INLINE_XATTR);
1076 if (ri->i_inline & F2FS_INLINE_DATA)
1077 set_inode_flag(fi, FI_INLINE_DATA);
1080 static inline void set_raw_inline(struct f2fs_inode_info *fi,
1081 struct f2fs_inode *ri)
1085 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1086 ri->i_inline |= F2FS_INLINE_XATTR;
1087 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1088 ri->i_inline |= F2FS_INLINE_DATA;
1091 static inline int f2fs_has_inline_xattr(struct inode *inode)
1093 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1096 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1098 if (f2fs_has_inline_xattr(&fi->vfs_inode))
1099 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1100 return DEF_ADDRS_PER_INODE;
1103 static inline void *inline_xattr_addr(struct page *page)
1105 struct f2fs_inode *ri = F2FS_INODE(page);
1106 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1107 F2FS_INLINE_XATTR_ADDRS]);
1110 static inline int inline_xattr_size(struct inode *inode)
1112 if (f2fs_has_inline_xattr(inode))
1113 return F2FS_INLINE_XATTR_ADDRS << 2;
1118 static inline int f2fs_has_inline_data(struct inode *inode)
1120 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1123 static inline void *inline_data_addr(struct page *page)
1125 struct f2fs_inode *ri = F2FS_INODE(page);
1126 return (void *)&(ri->i_addr[1]);
1129 static inline int f2fs_readonly(struct super_block *sb)
1131 return sb->s_flags & MS_RDONLY;
1134 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1136 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1139 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1141 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1142 sbi->sb->s_flags |= MS_RDONLY;
1145 #define get_inode_mode(i) \
1146 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1147 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1149 /* get offset of first page in next direct node */
1150 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1151 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1152 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1153 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1158 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1159 void truncate_data_blocks(struct dnode_of_data *);
1160 int truncate_blocks(struct inode *, u64, bool);
1161 void f2fs_truncate(struct inode *);
1162 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1163 int f2fs_setattr(struct dentry *, struct iattr *);
1164 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1165 int truncate_data_blocks_range(struct dnode_of_data *, int);
1166 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1167 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1172 void f2fs_set_inode_flags(struct inode *);
1173 struct inode *f2fs_iget(struct super_block *, unsigned long);
1174 int try_to_free_nats(struct f2fs_sb_info *, int);
1175 void update_inode(struct inode *, struct page *);
1176 void update_inode_page(struct inode *);
1177 int f2fs_write_inode(struct inode *, struct writeback_control *);
1178 void f2fs_evict_inode(struct inode *);
1183 struct dentry *f2fs_get_parent(struct dentry *child);
1188 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1190 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1191 ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1192 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1193 struct page *, struct inode *);
1194 int update_dent_inode(struct inode *, const struct qstr *);
1195 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
1196 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
1197 int f2fs_do_tmpfile(struct inode *, struct inode *);
1198 int f2fs_make_empty(struct inode *, struct inode *);
1199 bool f2fs_empty_dir(struct inode *);
1201 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1203 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1210 int f2fs_sync_fs(struct super_block *, int);
1211 extern __printf(3, 4)
1212 void f2fs_msg(struct super_block *, const char *, const char *, ...);
1217 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
1222 struct dnode_of_data;
1225 bool available_free_memory(struct f2fs_sb_info *, int);
1226 int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1227 bool fsync_mark_done(struct f2fs_sb_info *, nid_t);
1228 void fsync_mark_clear(struct f2fs_sb_info *, nid_t);
1229 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1230 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1231 int truncate_inode_blocks(struct inode *, pgoff_t);
1232 int truncate_xattr_node(struct inode *, struct page *);
1233 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
1234 void remove_inode_page(struct inode *);
1235 struct page *new_inode_page(struct inode *);
1236 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
1237 void ra_node_page(struct f2fs_sb_info *, nid_t);
1238 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1239 struct page *get_node_page_ra(struct page *, int);
1240 void sync_inode_page(struct dnode_of_data *);
1241 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1242 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1243 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1244 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1245 void recover_inline_xattr(struct inode *, struct page *);
1246 void recover_xattr_data(struct inode *, struct page *, block_t);
1247 int recover_inode_page(struct f2fs_sb_info *, struct page *);
1248 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1249 struct f2fs_summary_block *);
1250 void flush_nat_entries(struct f2fs_sb_info *);
1251 int build_node_manager(struct f2fs_sb_info *);
1252 void destroy_node_manager(struct f2fs_sb_info *);
1253 int __init create_node_manager_caches(void);
1254 void destroy_node_manager_caches(void);
1259 void f2fs_balance_fs(struct f2fs_sb_info *);
1260 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
1261 int f2fs_issue_flush(struct f2fs_sb_info *);
1262 int create_flush_cmd_control(struct f2fs_sb_info *);
1263 void destroy_flush_cmd_control(struct f2fs_sb_info *);
1264 void invalidate_blocks(struct f2fs_sb_info *, block_t);
1265 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
1266 void clear_prefree_segments(struct f2fs_sb_info *);
1267 void discard_next_dnode(struct f2fs_sb_info *, block_t);
1268 int npages_for_summary_flush(struct f2fs_sb_info *);
1269 void allocate_new_segments(struct f2fs_sb_info *);
1270 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
1271 void write_meta_page(struct f2fs_sb_info *, struct page *);
1272 void write_node_page(struct f2fs_sb_info *, struct page *,
1273 struct f2fs_io_info *, unsigned int, block_t, block_t *);
1274 void write_data_page(struct page *, struct dnode_of_data *, block_t *,
1275 struct f2fs_io_info *);
1276 void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
1277 void recover_data_page(struct f2fs_sb_info *, struct page *,
1278 struct f2fs_summary *, block_t, block_t);
1279 void allocate_data_block(struct f2fs_sb_info *, struct page *,
1280 block_t, block_t *, struct f2fs_summary *, int);
1281 void f2fs_wait_on_page_writeback(struct page *, enum page_type);
1282 void write_data_summaries(struct f2fs_sb_info *, block_t);
1283 void write_node_summaries(struct f2fs_sb_info *, block_t);
1284 int lookup_journal_in_cursum(struct f2fs_summary_block *,
1285 int, unsigned int, int);
1286 void flush_sit_entries(struct f2fs_sb_info *);
1287 int build_segment_manager(struct f2fs_sb_info *);
1288 void destroy_segment_manager(struct f2fs_sb_info *);
1289 int __init create_segment_manager_caches(void);
1290 void destroy_segment_manager_caches(void);
1295 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1296 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1297 int ra_meta_pages(struct f2fs_sb_info *, int, int, int);
1298 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
1299 void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1300 void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1301 void release_dirty_inode(struct f2fs_sb_info *);
1302 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
1303 int acquire_orphan_inode(struct f2fs_sb_info *);
1304 void release_orphan_inode(struct f2fs_sb_info *);
1305 void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1306 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1307 void recover_orphan_inodes(struct f2fs_sb_info *);
1308 int get_valid_checkpoint(struct f2fs_sb_info *);
1309 void update_dirty_page(struct inode *, struct page *);
1310 void add_dirty_dir_inode(struct inode *);
1311 void remove_dirty_dir_inode(struct inode *);
1312 void sync_dirty_dir_inodes(struct f2fs_sb_info *);
1313 void write_checkpoint(struct f2fs_sb_info *, bool);
1314 void init_ino_entry_info(struct f2fs_sb_info *);
1315 int __init create_checkpoint_caches(void);
1316 void destroy_checkpoint_caches(void);
1321 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
1322 int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
1323 void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
1324 struct f2fs_io_info *);
1325 int reserve_new_block(struct dnode_of_data *);
1326 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
1327 void update_extent_cache(block_t, struct dnode_of_data *);
1328 struct page *find_data_page(struct inode *, pgoff_t, bool);
1329 struct page *get_lock_data_page(struct inode *, pgoff_t);
1330 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
1331 int do_write_data_page(struct page *, struct f2fs_io_info *);
1332 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
1337 int start_gc_thread(struct f2fs_sb_info *);
1338 void stop_gc_thread(struct f2fs_sb_info *);
1339 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
1340 int f2fs_gc(struct f2fs_sb_info *);
1341 void build_gc_manager(struct f2fs_sb_info *);
1342 int __init create_gc_caches(void);
1343 void destroy_gc_caches(void);
1348 int recover_fsync_data(struct f2fs_sb_info *);
1349 bool space_for_roll_forward(struct f2fs_sb_info *);
1354 #ifdef CONFIG_F2FS_STAT_FS
1355 struct f2fs_stat_info {
1356 struct list_head stat_list;
1357 struct f2fs_sb_info *sbi;
1358 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1359 int main_area_segs, main_area_sections, main_area_zones;
1360 int hit_ext, total_ext;
1361 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1362 int nats, sits, fnids;
1363 int total_count, utilization;
1364 int bg_gc, inline_inode;
1365 unsigned int valid_count, valid_node_count, valid_inode_count;
1366 unsigned int bimodal, avg_vblocks;
1367 int util_free, util_valid, util_invalid;
1368 int rsvd_segs, overp_segs;
1369 int dirty_count, node_pages, meta_pages;
1370 int prefree_count, call_count, cp_count;
1371 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1372 int tot_blks, data_blks, node_blks;
1373 int curseg[NR_CURSEG_TYPE];
1374 int cursec[NR_CURSEG_TYPE];
1375 int curzone[NR_CURSEG_TYPE];
1377 unsigned int segment_count[2];
1378 unsigned int block_count[2];
1379 unsigned base_mem, cache_mem;
1382 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1384 return (struct f2fs_stat_info *)sbi->stat_info;
1387 #define stat_inc_cp_count(si) ((si)->cp_count++)
1388 #define stat_inc_call_count(si) ((si)->call_count++)
1389 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1390 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1391 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1392 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1393 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1394 #define stat_inc_inline_inode(inode) \
1396 if (f2fs_has_inline_data(inode)) \
1397 ((F2FS_I_SB(inode))->inline_inode++); \
1399 #define stat_dec_inline_inode(inode) \
1401 if (f2fs_has_inline_data(inode)) \
1402 ((F2FS_I_SB(inode))->inline_inode--); \
1405 #define stat_inc_seg_type(sbi, curseg) \
1406 ((sbi)->segment_count[(curseg)->alloc_type]++)
1407 #define stat_inc_block_count(sbi, curseg) \
1408 ((sbi)->block_count[(curseg)->alloc_type]++)
1410 #define stat_inc_seg_count(sbi, type) \
1412 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1414 if (type == SUM_TYPE_DATA) \
1420 #define stat_inc_tot_blk_count(si, blks) \
1421 (si->tot_blks += (blks))
1423 #define stat_inc_data_blk_count(sbi, blks) \
1425 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1426 stat_inc_tot_blk_count(si, blks); \
1427 si->data_blks += (blks); \
1430 #define stat_inc_node_blk_count(sbi, blks) \
1432 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1433 stat_inc_tot_blk_count(si, blks); \
1434 si->node_blks += (blks); \
1437 int f2fs_build_stats(struct f2fs_sb_info *);
1438 void f2fs_destroy_stats(struct f2fs_sb_info *);
1439 void __init f2fs_create_root_stats(void);
1440 void f2fs_destroy_root_stats(void);
1442 #define stat_inc_cp_count(si)
1443 #define stat_inc_call_count(si)
1444 #define stat_inc_bggc_count(si)
1445 #define stat_inc_dirty_dir(sbi)
1446 #define stat_dec_dirty_dir(sbi)
1447 #define stat_inc_total_hit(sb)
1448 #define stat_inc_read_hit(sb)
1449 #define stat_inc_inline_inode(inode)
1450 #define stat_dec_inline_inode(inode)
1451 #define stat_inc_seg_type(sbi, curseg)
1452 #define stat_inc_block_count(sbi, curseg)
1453 #define stat_inc_seg_count(si, type)
1454 #define stat_inc_tot_blk_count(si, blks)
1455 #define stat_inc_data_blk_count(si, blks)
1456 #define stat_inc_node_blk_count(sbi, blks)
1458 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1459 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
1460 static inline void __init f2fs_create_root_stats(void) { }
1461 static inline void f2fs_destroy_root_stats(void) { }
1464 extern const struct file_operations f2fs_dir_operations;
1465 extern const struct file_operations f2fs_file_operations;
1466 extern const struct inode_operations f2fs_file_inode_operations;
1467 extern const struct address_space_operations f2fs_dblock_aops;
1468 extern const struct address_space_operations f2fs_node_aops;
1469 extern const struct address_space_operations f2fs_meta_aops;
1470 extern const struct inode_operations f2fs_dir_inode_operations;
1471 extern const struct inode_operations f2fs_symlink_inode_operations;
1472 extern const struct inode_operations f2fs_special_inode_operations;
1477 bool f2fs_may_inline(struct inode *);
1478 int f2fs_read_inline_data(struct inode *, struct page *);
1479 int f2fs_convert_inline_data(struct inode *, pgoff_t, struct page *);
1480 int f2fs_write_inline_data(struct inode *, struct page *, unsigned int);
1481 void truncate_inline_data(struct inode *, u64);
1482 bool recover_inline_data(struct inode *, struct page *);