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(condition) BUG_ON(condition)
25 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
27 #define f2fs_bug_on(condition) WARN_ON(condition)
28 #define f2fs_down_write(x, y) down_write(x)
34 #define F2FS_MOUNT_BG_GC 0x00000001
35 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
36 #define F2FS_MOUNT_DISCARD 0x00000004
37 #define F2FS_MOUNT_NOHEAP 0x00000008
38 #define F2FS_MOUNT_XATTR_USER 0x00000010
39 #define F2FS_MOUNT_POSIX_ACL 0x00000020
40 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
41 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
42 #define F2FS_MOUNT_INLINE_DATA 0x00000100
43 #define F2FS_MOUNT_FLUSH_MERGE 0x00000200
44 #define F2FS_MOUNT_NOBARRIER 0x00000400
46 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
47 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
48 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
50 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
51 typecheck(unsigned long long, b) && \
52 ((long long)((a) - (b)) > 0))
54 typedef u32 block_t; /*
55 * should not change u32, since it is the on-disk block
56 * address format, __le32.
60 struct f2fs_mount_info {
64 #define CRCPOLY_LE 0xedb88320
66 static inline __u32 f2fs_crc32(void *buf, size_t len)
68 unsigned char *p = (unsigned char *)buf;
69 __u32 crc = F2FS_SUPER_MAGIC;
74 for (i = 0; i < 8; i++)
75 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
80 static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
82 return f2fs_crc32(buf, buf_size) == blk_crc;
86 * For checkpoint manager
94 * For CP/NAT/SIT/SSA readahead
103 /* for the list of ino */
105 ORPHAN_INO, /* for orphan ino list */
106 APPEND_INO, /* for append ino list */
107 UPDATE_INO, /* for update ino list */
108 MAX_INO_ENTRY, /* max. list */
112 struct list_head list; /* list head */
113 nid_t ino; /* inode number */
116 /* for the list of directory inodes */
117 struct dir_inode_entry {
118 struct list_head list; /* list head */
119 struct inode *inode; /* vfs inode pointer */
122 /* for the list of blockaddresses to be discarded */
123 struct discard_entry {
124 struct list_head list; /* list head */
125 block_t blkaddr; /* block address to be discarded */
126 int len; /* # of consecutive blocks of the discard */
129 /* for the list of fsync inodes, used only during recovery */
130 struct fsync_inode_entry {
131 struct list_head list; /* list head */
132 struct inode *inode; /* vfs inode pointer */
133 block_t blkaddr; /* block address locating the last inode */
136 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
137 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
139 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
140 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
141 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
142 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
144 static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
146 int before = nats_in_cursum(rs);
147 rs->n_nats = cpu_to_le16(before + i);
151 static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
153 int before = sits_in_cursum(rs);
154 rs->n_sits = cpu_to_le16(before + i);
161 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
162 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
164 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
166 * ioctl commands in 32 bit emulation
168 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
169 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
173 * For INODE and NODE manager
176 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
177 * as its node offset to distinguish from index node blocks.
178 * But some bits are used to mark the node block.
180 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
183 ALLOC_NODE, /* allocate a new node page if needed */
184 LOOKUP_NODE, /* look up a node without readahead */
186 * look up a node with readahead called
191 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
193 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
195 /* for in-memory extent cache entry */
196 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
199 rwlock_t ext_lock; /* rwlock for consistency */
200 unsigned int fofs; /* start offset in a file */
201 u32 blk_addr; /* start block address of the extent */
202 unsigned int len; /* length of the extent */
206 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
208 #define FADVISE_COLD_BIT 0x01
209 #define FADVISE_LOST_PINO_BIT 0x02
211 #define DEF_DIR_LEVEL 0
213 struct f2fs_inode_info {
214 struct inode vfs_inode; /* serve a vfs inode */
215 unsigned long i_flags; /* keep an inode flags for ioctl */
216 unsigned char i_advise; /* use to give file attribute hints */
217 unsigned char i_dir_level; /* use for dentry level for large dir */
218 unsigned int i_current_depth; /* use only in directory structure */
219 unsigned int i_pino; /* parent inode number */
220 umode_t i_acl_mode; /* keep file acl mode temporarily */
222 /* Use below internally in f2fs*/
223 unsigned long flags; /* use to pass per-file flags */
224 struct rw_semaphore i_sem; /* protect fi info */
225 atomic_t dirty_dents; /* # of dirty dentry pages */
226 f2fs_hash_t chash; /* hash value of given file name */
227 unsigned int clevel; /* maximum level of given file name */
228 nid_t i_xattr_nid; /* node id that contains xattrs */
229 unsigned long long xattr_ver; /* cp version of xattr modification */
230 struct extent_info ext; /* in-memory extent cache entry */
231 struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */
234 static inline void get_extent_info(struct extent_info *ext,
235 struct f2fs_extent i_ext)
237 write_lock(&ext->ext_lock);
238 ext->fofs = le32_to_cpu(i_ext.fofs);
239 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
240 ext->len = le32_to_cpu(i_ext.len);
241 write_unlock(&ext->ext_lock);
244 static inline void set_raw_extent(struct extent_info *ext,
245 struct f2fs_extent *i_ext)
247 read_lock(&ext->ext_lock);
248 i_ext->fofs = cpu_to_le32(ext->fofs);
249 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
250 i_ext->len = cpu_to_le32(ext->len);
251 read_unlock(&ext->ext_lock);
254 struct f2fs_nm_info {
255 block_t nat_blkaddr; /* base disk address of NAT */
256 nid_t max_nid; /* maximum possible node ids */
257 nid_t available_nids; /* maximum available node ids */
258 nid_t next_scan_nid; /* the next nid to be scanned */
259 unsigned int ram_thresh; /* control the memory footprint */
261 /* NAT cache management */
262 struct radix_tree_root nat_root;/* root of the nat entry cache */
263 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
264 unsigned int nat_cnt; /* the # of cached nat entries */
265 struct list_head nat_entries; /* cached nat entry list (clean) */
266 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */
267 struct list_head nat_entry_set; /* nat entry set list */
268 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
270 /* free node ids management */
271 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
272 struct list_head free_nid_list; /* a list for free nids */
273 spinlock_t free_nid_list_lock; /* protect free nid list */
274 unsigned int fcnt; /* the number of free node id */
275 struct mutex build_lock; /* lock for build free nids */
278 char *nat_bitmap; /* NAT bitmap pointer */
279 int bitmap_size; /* bitmap size */
283 * this structure is used as one of function parameters.
284 * all the information are dedicated to a given direct node block determined
285 * by the data offset in a file.
287 struct dnode_of_data {
288 struct inode *inode; /* vfs inode pointer */
289 struct page *inode_page; /* its inode page, NULL is possible */
290 struct page *node_page; /* cached direct node page */
291 nid_t nid; /* node id of the direct node block */
292 unsigned int ofs_in_node; /* data offset in the node page */
293 bool inode_page_locked; /* inode page is locked or not */
294 block_t data_blkaddr; /* block address of the node block */
297 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
298 struct page *ipage, struct page *npage, nid_t nid)
300 memset(dn, 0, sizeof(*dn));
302 dn->inode_page = ipage;
303 dn->node_page = npage;
310 * By default, there are 6 active log areas across the whole main area.
311 * When considering hot and cold data separation to reduce cleaning overhead,
312 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
314 * In the current design, you should not change the numbers intentionally.
315 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
316 * logs individually according to the underlying devices. (default: 6)
317 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
318 * data and 8 for node logs.
320 #define NR_CURSEG_DATA_TYPE (3)
321 #define NR_CURSEG_NODE_TYPE (3)
322 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
325 CURSEG_HOT_DATA = 0, /* directory entry blocks */
326 CURSEG_WARM_DATA, /* data blocks */
327 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
328 CURSEG_HOT_NODE, /* direct node blocks of directory files */
329 CURSEG_WARM_NODE, /* direct node blocks of normal files */
330 CURSEG_COLD_NODE, /* indirect node blocks */
335 struct flush_cmd *next;
336 struct completion wait;
340 struct flush_cmd_control {
341 struct task_struct *f2fs_issue_flush; /* flush thread */
342 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
343 struct flush_cmd *issue_list; /* list for command issue */
344 struct flush_cmd *dispatch_list; /* list for command dispatch */
345 spinlock_t issue_lock; /* for issue list lock */
346 struct flush_cmd *issue_tail; /* list tail of issue list */
349 struct f2fs_sm_info {
350 struct sit_info *sit_info; /* whole segment information */
351 struct free_segmap_info *free_info; /* free segment information */
352 struct dirty_seglist_info *dirty_info; /* dirty segment information */
353 struct curseg_info *curseg_array; /* active segment information */
355 block_t seg0_blkaddr; /* block address of 0'th segment */
356 block_t main_blkaddr; /* start block address of main area */
357 block_t ssa_blkaddr; /* start block address of SSA area */
359 unsigned int segment_count; /* total # of segments */
360 unsigned int main_segments; /* # of segments in main area */
361 unsigned int reserved_segments; /* # of reserved segments */
362 unsigned int ovp_segments; /* # of overprovision segments */
364 /* a threshold to reclaim prefree segments */
365 unsigned int rec_prefree_segments;
367 /* for small discard management */
368 struct list_head discard_list; /* 4KB discard list */
369 int nr_discards; /* # of discards in the list */
370 int max_discards; /* max. discards to be issued */
372 unsigned int ipu_policy; /* in-place-update policy */
373 unsigned int min_ipu_util; /* in-place-update threshold */
375 /* for flush command control */
376 struct flush_cmd_control *cmd_control_info;
384 * COUNT_TYPE for monitoring
386 * f2fs monitors the number of several block types such as on-writeback,
387 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
398 * The below are the page types of bios used in submit_bio().
399 * The available types are:
400 * DATA User data pages. It operates as async mode.
401 * NODE Node pages. It operates as async mode.
402 * META FS metadata pages such as SIT, NAT, CP.
403 * NR_PAGE_TYPE The number of page types.
404 * META_FLUSH Make sure the previous pages are written
405 * with waiting the bio's completion
406 * ... Only can be used with META.
408 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
417 struct f2fs_io_info {
418 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
419 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
422 #define is_read_io(rw) (((rw) & 1) == READ)
423 struct f2fs_bio_info {
424 struct f2fs_sb_info *sbi; /* f2fs superblock */
425 struct bio *bio; /* bios to merge */
426 sector_t last_block_in_bio; /* last block number */
427 struct f2fs_io_info fio; /* store buffered io info. */
428 struct rw_semaphore io_rwsem; /* blocking op for bio */
431 struct f2fs_sb_info {
432 struct super_block *sb; /* pointer to VFS super block */
433 struct proc_dir_entry *s_proc; /* proc entry */
434 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
435 struct f2fs_super_block *raw_super; /* raw super block pointer */
436 int s_dirty; /* dirty flag for checkpoint */
437 bool need_fsck; /* need fsck.f2fs to fix */
439 /* for node-related operations */
440 struct f2fs_nm_info *nm_info; /* node manager */
441 struct inode *node_inode; /* cache node blocks */
443 /* for segment-related operations */
444 struct f2fs_sm_info *sm_info; /* segment manager */
446 /* for bio operations */
447 struct f2fs_bio_info read_io; /* for read bios */
448 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
449 struct completion *wait_io; /* for completion bios */
452 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
453 struct inode *meta_inode; /* cache meta blocks */
454 struct mutex cp_mutex; /* checkpoint procedure lock */
455 struct rw_semaphore cp_rwsem; /* blocking FS operations */
456 struct rw_semaphore node_write; /* locking node writes */
457 struct mutex writepages; /* mutex for writepages() */
458 bool por_doing; /* recovery is doing or not */
459 wait_queue_head_t cp_wait;
461 /* for inode management */
462 struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */
463 spinlock_t ino_lock[MAX_INO_ENTRY]; /* for ino entry lock */
464 struct list_head ino_list[MAX_INO_ENTRY]; /* inode list head */
466 /* for orphan inode, use 0'th array */
467 unsigned int n_orphans; /* # of orphan inodes */
468 unsigned int max_orphans; /* max orphan inodes */
470 /* for directory inode management */
471 struct list_head dir_inode_list; /* dir inode list */
472 spinlock_t dir_inode_lock; /* for dir inode list lock */
474 /* basic filesystem units */
475 unsigned int log_sectors_per_block; /* log2 sectors per block */
476 unsigned int log_blocksize; /* log2 block size */
477 unsigned int blocksize; /* block size */
478 unsigned int root_ino_num; /* root inode number*/
479 unsigned int node_ino_num; /* node inode number*/
480 unsigned int meta_ino_num; /* meta inode number*/
481 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
482 unsigned int blocks_per_seg; /* blocks per segment */
483 unsigned int segs_per_sec; /* segments per section */
484 unsigned int secs_per_zone; /* sections per zone */
485 unsigned int total_sections; /* total section count */
486 unsigned int total_node_count; /* total node block count */
487 unsigned int total_valid_node_count; /* valid node block count */
488 unsigned int total_valid_inode_count; /* valid inode count */
489 int active_logs; /* # of active logs */
490 int dir_level; /* directory level */
492 block_t user_block_count; /* # of user blocks */
493 block_t total_valid_block_count; /* # of valid blocks */
494 block_t alloc_valid_block_count; /* # of allocated blocks */
495 block_t last_valid_block_count; /* for recovery */
496 u32 s_next_generation; /* for NFS support */
497 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
499 struct f2fs_mount_info mount_opt; /* mount options */
501 /* for cleaning operations */
502 struct mutex gc_mutex; /* mutex for GC */
503 struct f2fs_gc_kthread *gc_thread; /* GC thread */
504 unsigned int cur_victim_sec; /* current victim section num */
506 /* maximum # of trials to find a victim segment for SSR and GC */
507 unsigned int max_victim_search;
510 * for stat information.
511 * one is for the LFS mode, and the other is for the SSR mode.
513 #ifdef CONFIG_F2FS_STAT_FS
514 struct f2fs_stat_info *stat_info; /* FS status information */
515 unsigned int segment_count[2]; /* # of allocated segments */
516 unsigned int block_count[2]; /* # of allocated blocks */
517 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
518 int inline_inode; /* # of inline_data inodes */
519 int bg_gc; /* background gc calls */
520 unsigned int n_dirty_dirs; /* # of dir inodes */
522 unsigned int last_victim[2]; /* last victim segment # */
523 spinlock_t stat_lock; /* lock for stat operations */
525 /* For sysfs suppport */
526 struct kobject s_kobj;
527 struct completion s_kobj_unregister;
533 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
535 return container_of(inode, struct f2fs_inode_info, vfs_inode);
538 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
540 return sb->s_fs_info;
543 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
545 return F2FS_SB(inode->i_sb);
548 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
550 return F2FS_I_SB(mapping->host);
553 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
555 return F2FS_M_SB(page->mapping);
558 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
560 return (struct f2fs_super_block *)(sbi->raw_super);
563 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
565 return (struct f2fs_checkpoint *)(sbi->ckpt);
568 static inline struct f2fs_node *F2FS_NODE(struct page *page)
570 return (struct f2fs_node *)page_address(page);
573 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
575 return &((struct f2fs_node *)page_address(page))->i;
578 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
580 return (struct f2fs_nm_info *)(sbi->nm_info);
583 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
585 return (struct f2fs_sm_info *)(sbi->sm_info);
588 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
590 return (struct sit_info *)(SM_I(sbi)->sit_info);
593 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
595 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
598 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
600 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
603 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
605 return sbi->meta_inode->i_mapping;
608 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
610 return sbi->node_inode->i_mapping;
613 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
618 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
623 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
625 return le64_to_cpu(cp->checkpoint_ver);
628 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
630 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
631 return ckpt_flags & f;
634 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
636 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
638 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
641 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
643 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
645 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
648 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
650 down_read(&sbi->cp_rwsem);
653 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
655 up_read(&sbi->cp_rwsem);
658 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
660 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
663 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
665 up_write(&sbi->cp_rwsem);
669 * Check whether the given nid is within node id range.
671 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
673 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
675 if (unlikely(nid >= NM_I(sbi)->max_nid))
680 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
683 * Check whether the inode has blocks or not
685 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
687 if (F2FS_I(inode)->i_xattr_nid)
688 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
690 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
693 static inline bool f2fs_has_xattr_block(unsigned int ofs)
695 return ofs == XATTR_NODE_OFFSET;
698 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
699 struct inode *inode, blkcnt_t count)
701 block_t valid_block_count;
703 spin_lock(&sbi->stat_lock);
705 sbi->total_valid_block_count + (block_t)count;
706 if (unlikely(valid_block_count > sbi->user_block_count)) {
707 spin_unlock(&sbi->stat_lock);
710 inode->i_blocks += count;
711 sbi->total_valid_block_count = valid_block_count;
712 sbi->alloc_valid_block_count += (block_t)count;
713 spin_unlock(&sbi->stat_lock);
717 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
721 spin_lock(&sbi->stat_lock);
722 f2fs_bug_on(sbi->total_valid_block_count < (block_t) count);
723 f2fs_bug_on(inode->i_blocks < count);
724 inode->i_blocks -= count;
725 sbi->total_valid_block_count -= (block_t)count;
726 spin_unlock(&sbi->stat_lock);
729 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
731 atomic_inc(&sbi->nr_pages[count_type]);
732 F2FS_SET_SB_DIRT(sbi);
735 static inline void inode_inc_dirty_dents(struct inode *inode)
737 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
738 atomic_inc(&F2FS_I(inode)->dirty_dents);
741 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
743 atomic_dec(&sbi->nr_pages[count_type]);
746 static inline void inode_dec_dirty_dents(struct inode *inode)
748 if (!S_ISDIR(inode->i_mode))
751 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
752 atomic_dec(&F2FS_I(inode)->dirty_dents);
755 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
757 return atomic_read(&sbi->nr_pages[count_type]);
760 static inline int get_dirty_dents(struct inode *inode)
762 return atomic_read(&F2FS_I(inode)->dirty_dents);
765 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
767 unsigned int pages_per_sec = sbi->segs_per_sec *
768 (1 << sbi->log_blocks_per_seg);
769 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
770 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
773 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
775 return sbi->total_valid_block_count;
778 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
780 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
782 /* return NAT or SIT bitmap */
783 if (flag == NAT_BITMAP)
784 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
785 else if (flag == SIT_BITMAP)
786 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
791 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
793 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
796 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
797 if (flag == NAT_BITMAP)
798 return &ckpt->sit_nat_version_bitmap;
800 return (unsigned char *)ckpt + F2FS_BLKSIZE;
802 offset = (flag == NAT_BITMAP) ?
803 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
804 return &ckpt->sit_nat_version_bitmap + offset;
808 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
811 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
812 unsigned long long ckpt_version = cur_cp_version(ckpt);
814 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
817 * odd numbered checkpoint should at cp segment 0
818 * and even segment must be at cp segment 1
820 if (!(ckpt_version & 1))
821 start_addr += sbi->blocks_per_seg;
826 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
828 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
831 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
834 block_t valid_block_count;
835 unsigned int valid_node_count;
837 spin_lock(&sbi->stat_lock);
839 valid_block_count = sbi->total_valid_block_count + 1;
840 if (unlikely(valid_block_count > sbi->user_block_count)) {
841 spin_unlock(&sbi->stat_lock);
845 valid_node_count = sbi->total_valid_node_count + 1;
846 if (unlikely(valid_node_count > sbi->total_node_count)) {
847 spin_unlock(&sbi->stat_lock);
854 sbi->alloc_valid_block_count++;
855 sbi->total_valid_node_count++;
856 sbi->total_valid_block_count++;
857 spin_unlock(&sbi->stat_lock);
862 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
865 spin_lock(&sbi->stat_lock);
867 f2fs_bug_on(!sbi->total_valid_block_count);
868 f2fs_bug_on(!sbi->total_valid_node_count);
869 f2fs_bug_on(!inode->i_blocks);
872 sbi->total_valid_node_count--;
873 sbi->total_valid_block_count--;
875 spin_unlock(&sbi->stat_lock);
878 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
880 return sbi->total_valid_node_count;
883 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
885 spin_lock(&sbi->stat_lock);
886 f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count);
887 sbi->total_valid_inode_count++;
888 spin_unlock(&sbi->stat_lock);
891 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
893 spin_lock(&sbi->stat_lock);
894 f2fs_bug_on(!sbi->total_valid_inode_count);
895 sbi->total_valid_inode_count--;
896 spin_unlock(&sbi->stat_lock);
899 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
901 return sbi->total_valid_inode_count;
904 static inline void f2fs_put_page(struct page *page, int unlock)
910 f2fs_bug_on(!PageLocked(page));
913 page_cache_release(page);
916 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
919 f2fs_put_page(dn->node_page, 1);
920 if (dn->inode_page && dn->node_page != dn->inode_page)
921 f2fs_put_page(dn->inode_page, 0);
922 dn->node_page = NULL;
923 dn->inode_page = NULL;
926 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
929 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
932 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
937 entry = kmem_cache_alloc(cachep, flags);
946 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
948 static inline bool IS_INODE(struct page *page)
950 struct f2fs_node *p = F2FS_NODE(page);
951 return RAW_IS_INODE(p);
954 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
956 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
959 static inline block_t datablock_addr(struct page *node_page,
962 struct f2fs_node *raw_node;
964 raw_node = F2FS_NODE(node_page);
965 addr_array = blkaddr_in_node(raw_node);
966 return le32_to_cpu(addr_array[offset]);
969 static inline int f2fs_test_bit(unsigned int nr, char *addr)
974 mask = 1 << (7 - (nr & 0x07));
978 static inline int f2fs_set_bit(unsigned int nr, char *addr)
984 mask = 1 << (7 - (nr & 0x07));
990 static inline int f2fs_clear_bit(unsigned int nr, char *addr)
996 mask = 1 << (7 - (nr & 0x07));
1002 /* used for f2fs_inode_info->flags */
1004 FI_NEW_INODE, /* indicate newly allocated inode */
1005 FI_DIRTY_INODE, /* indicate inode is dirty or not */
1006 FI_DIRTY_DIR, /* indicate directory has dirty pages */
1007 FI_INC_LINK, /* need to increment i_nlink */
1008 FI_ACL_MODE, /* indicate acl mode */
1009 FI_NO_ALLOC, /* should not allocate any blocks */
1010 FI_UPDATE_DIR, /* should update inode block for consistency */
1011 FI_DELAY_IPUT, /* used for the recovery */
1012 FI_NO_EXTENT, /* not to use the extent cache */
1013 FI_INLINE_XATTR, /* used for inline xattr */
1014 FI_INLINE_DATA, /* used for inline data*/
1015 FI_APPEND_WRITE, /* inode has appended data */
1016 FI_UPDATE_WRITE, /* inode has in-place-update data */
1017 FI_NEED_IPU, /* used fo ipu for fdatasync */
1020 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1022 if (!test_bit(flag, &fi->flags))
1023 set_bit(flag, &fi->flags);
1026 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1028 return test_bit(flag, &fi->flags);
1031 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1033 if (test_bit(flag, &fi->flags))
1034 clear_bit(flag, &fi->flags);
1037 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1039 fi->i_acl_mode = mode;
1040 set_inode_flag(fi, FI_ACL_MODE);
1043 static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1045 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
1046 clear_inode_flag(fi, FI_ACL_MODE);
1052 static inline void get_inline_info(struct f2fs_inode_info *fi,
1053 struct f2fs_inode *ri)
1055 if (ri->i_inline & F2FS_INLINE_XATTR)
1056 set_inode_flag(fi, FI_INLINE_XATTR);
1057 if (ri->i_inline & F2FS_INLINE_DATA)
1058 set_inode_flag(fi, FI_INLINE_DATA);
1061 static inline void set_raw_inline(struct f2fs_inode_info *fi,
1062 struct f2fs_inode *ri)
1066 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1067 ri->i_inline |= F2FS_INLINE_XATTR;
1068 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1069 ri->i_inline |= F2FS_INLINE_DATA;
1072 static inline int f2fs_has_inline_xattr(struct inode *inode)
1074 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1077 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1079 if (f2fs_has_inline_xattr(&fi->vfs_inode))
1080 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1081 return DEF_ADDRS_PER_INODE;
1084 static inline void *inline_xattr_addr(struct page *page)
1086 struct f2fs_inode *ri = F2FS_INODE(page);
1087 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1088 F2FS_INLINE_XATTR_ADDRS]);
1091 static inline int inline_xattr_size(struct inode *inode)
1093 if (f2fs_has_inline_xattr(inode))
1094 return F2FS_INLINE_XATTR_ADDRS << 2;
1099 static inline int f2fs_has_inline_data(struct inode *inode)
1101 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1104 static inline void *inline_data_addr(struct page *page)
1106 struct f2fs_inode *ri = F2FS_INODE(page);
1107 return (void *)&(ri->i_addr[1]);
1110 static inline int f2fs_readonly(struct super_block *sb)
1112 return sb->s_flags & MS_RDONLY;
1115 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1117 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1120 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1122 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1123 sbi->sb->s_flags |= MS_RDONLY;
1126 #define get_inode_mode(i) \
1127 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1128 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1130 /* get offset of first page in next direct node */
1131 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1132 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1133 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1134 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1139 int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1140 void truncate_data_blocks(struct dnode_of_data *);
1141 int truncate_blocks(struct inode *, u64, bool);
1142 void f2fs_truncate(struct inode *);
1143 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
1144 int f2fs_setattr(struct dentry *, struct iattr *);
1145 int truncate_hole(struct inode *, pgoff_t, pgoff_t);
1146 int truncate_data_blocks_range(struct dnode_of_data *, int);
1147 long f2fs_ioctl(struct file *, unsigned int, unsigned long);
1148 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
1153 void f2fs_set_inode_flags(struct inode *);
1154 struct inode *f2fs_iget(struct super_block *, unsigned long);
1155 int try_to_free_nats(struct f2fs_sb_info *, int);
1156 void update_inode(struct inode *, struct page *);
1157 void update_inode_page(struct inode *);
1158 int f2fs_write_inode(struct inode *, struct writeback_control *);
1159 void f2fs_evict_inode(struct inode *);
1164 struct dentry *f2fs_get_parent(struct dentry *child);
1169 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1171 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1172 ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1173 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1174 struct page *, struct inode *);
1175 int update_dent_inode(struct inode *, const struct qstr *);
1176 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
1177 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
1178 int f2fs_do_tmpfile(struct inode *, struct inode *);
1179 int f2fs_make_empty(struct inode *, struct inode *);
1180 bool f2fs_empty_dir(struct inode *);
1182 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1184 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1191 int f2fs_sync_fs(struct super_block *, int);
1192 extern __printf(3, 4)
1193 void f2fs_msg(struct super_block *, const char *, const char *, ...);
1198 f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
1203 struct dnode_of_data;
1206 bool available_free_memory(struct f2fs_sb_info *, int);
1207 int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1208 bool fsync_mark_done(struct f2fs_sb_info *, nid_t);
1209 void fsync_mark_clear(struct f2fs_sb_info *, nid_t);
1210 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1211 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1212 int truncate_inode_blocks(struct inode *, pgoff_t);
1213 int truncate_xattr_node(struct inode *, struct page *);
1214 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
1215 void remove_inode_page(struct inode *);
1216 struct page *new_inode_page(struct inode *);
1217 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
1218 void ra_node_page(struct f2fs_sb_info *, nid_t);
1219 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1220 struct page *get_node_page_ra(struct page *, int);
1221 void sync_inode_page(struct dnode_of_data *);
1222 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1223 bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1224 void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1225 void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1226 void recover_inline_xattr(struct inode *, struct page *);
1227 void recover_xattr_data(struct inode *, struct page *, block_t);
1228 int recover_inode_page(struct f2fs_sb_info *, struct page *);
1229 int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1230 struct f2fs_summary_block *);
1231 void flush_nat_entries(struct f2fs_sb_info *);
1232 int build_node_manager(struct f2fs_sb_info *);
1233 void destroy_node_manager(struct f2fs_sb_info *);
1234 int __init create_node_manager_caches(void);
1235 void destroy_node_manager_caches(void);
1240 void f2fs_balance_fs(struct f2fs_sb_info *);
1241 void f2fs_balance_fs_bg(struct f2fs_sb_info *);
1242 int f2fs_issue_flush(struct f2fs_sb_info *);
1243 int create_flush_cmd_control(struct f2fs_sb_info *);
1244 void destroy_flush_cmd_control(struct f2fs_sb_info *);
1245 void invalidate_blocks(struct f2fs_sb_info *, block_t);
1246 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
1247 void clear_prefree_segments(struct f2fs_sb_info *);
1248 void discard_next_dnode(struct f2fs_sb_info *, block_t);
1249 int npages_for_summary_flush(struct f2fs_sb_info *);
1250 void allocate_new_segments(struct f2fs_sb_info *);
1251 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
1252 void write_meta_page(struct f2fs_sb_info *, struct page *);
1253 void write_node_page(struct f2fs_sb_info *, struct page *,
1254 struct f2fs_io_info *, unsigned int, block_t, block_t *);
1255 void write_data_page(struct page *, struct dnode_of_data *, block_t *,
1256 struct f2fs_io_info *);
1257 void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
1258 void recover_data_page(struct f2fs_sb_info *, struct page *,
1259 struct f2fs_summary *, block_t, block_t);
1260 void allocate_data_block(struct f2fs_sb_info *, struct page *,
1261 block_t, block_t *, struct f2fs_summary *, int);
1262 void f2fs_wait_on_page_writeback(struct page *, enum page_type);
1263 void write_data_summaries(struct f2fs_sb_info *, block_t);
1264 void write_node_summaries(struct f2fs_sb_info *, block_t);
1265 int lookup_journal_in_cursum(struct f2fs_summary_block *,
1266 int, unsigned int, int);
1267 void flush_sit_entries(struct f2fs_sb_info *);
1268 int build_segment_manager(struct f2fs_sb_info *);
1269 void destroy_segment_manager(struct f2fs_sb_info *);
1270 int __init create_segment_manager_caches(void);
1271 void destroy_segment_manager_caches(void);
1276 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1277 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1278 int ra_meta_pages(struct f2fs_sb_info *, int, int, int);
1279 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
1280 void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1281 void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1282 void release_dirty_inode(struct f2fs_sb_info *);
1283 bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
1284 int acquire_orphan_inode(struct f2fs_sb_info *);
1285 void release_orphan_inode(struct f2fs_sb_info *);
1286 void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1287 void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1288 void recover_orphan_inodes(struct f2fs_sb_info *);
1289 int get_valid_checkpoint(struct f2fs_sb_info *);
1290 void set_dirty_dir_page(struct inode *, struct page *);
1291 void add_dirty_dir_inode(struct inode *);
1292 void remove_dirty_dir_inode(struct inode *);
1293 void sync_dirty_dir_inodes(struct f2fs_sb_info *);
1294 void write_checkpoint(struct f2fs_sb_info *, bool);
1295 void init_ino_entry_info(struct f2fs_sb_info *);
1296 int __init create_checkpoint_caches(void);
1297 void destroy_checkpoint_caches(void);
1302 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
1303 int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
1304 void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
1305 struct f2fs_io_info *);
1306 int reserve_new_block(struct dnode_of_data *);
1307 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
1308 void update_extent_cache(block_t, struct dnode_of_data *);
1309 struct page *find_data_page(struct inode *, pgoff_t, bool);
1310 struct page *get_lock_data_page(struct inode *, pgoff_t);
1311 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
1312 int do_write_data_page(struct page *, struct f2fs_io_info *);
1313 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
1318 int start_gc_thread(struct f2fs_sb_info *);
1319 void stop_gc_thread(struct f2fs_sb_info *);
1320 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
1321 int f2fs_gc(struct f2fs_sb_info *);
1322 void build_gc_manager(struct f2fs_sb_info *);
1323 int __init create_gc_caches(void);
1324 void destroy_gc_caches(void);
1329 int recover_fsync_data(struct f2fs_sb_info *);
1330 bool space_for_roll_forward(struct f2fs_sb_info *);
1335 #ifdef CONFIG_F2FS_STAT_FS
1336 struct f2fs_stat_info {
1337 struct list_head stat_list;
1338 struct f2fs_sb_info *sbi;
1339 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1340 int main_area_segs, main_area_sections, main_area_zones;
1341 int hit_ext, total_ext;
1342 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1343 int nats, sits, fnids;
1344 int total_count, utilization;
1345 int bg_gc, inline_inode;
1346 unsigned int valid_count, valid_node_count, valid_inode_count;
1347 unsigned int bimodal, avg_vblocks;
1348 int util_free, util_valid, util_invalid;
1349 int rsvd_segs, overp_segs;
1350 int dirty_count, node_pages, meta_pages;
1351 int prefree_count, call_count, cp_count;
1352 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1353 int tot_blks, data_blks, node_blks;
1354 int curseg[NR_CURSEG_TYPE];
1355 int cursec[NR_CURSEG_TYPE];
1356 int curzone[NR_CURSEG_TYPE];
1358 unsigned int segment_count[2];
1359 unsigned int block_count[2];
1360 unsigned base_mem, cache_mem;
1363 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1365 return (struct f2fs_stat_info *)sbi->stat_info;
1368 #define stat_inc_cp_count(si) ((si)->cp_count++)
1369 #define stat_inc_call_count(si) ((si)->call_count++)
1370 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1371 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1372 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1373 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1374 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1375 #define stat_inc_inline_inode(inode) \
1377 if (f2fs_has_inline_data(inode)) \
1378 ((F2FS_I_SB(inode))->inline_inode++); \
1380 #define stat_dec_inline_inode(inode) \
1382 if (f2fs_has_inline_data(inode)) \
1383 ((F2FS_I_SB(inode))->inline_inode--); \
1386 #define stat_inc_seg_type(sbi, curseg) \
1387 ((sbi)->segment_count[(curseg)->alloc_type]++)
1388 #define stat_inc_block_count(sbi, curseg) \
1389 ((sbi)->block_count[(curseg)->alloc_type]++)
1391 #define stat_inc_seg_count(sbi, type) \
1393 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1395 if (type == SUM_TYPE_DATA) \
1401 #define stat_inc_tot_blk_count(si, blks) \
1402 (si->tot_blks += (blks))
1404 #define stat_inc_data_blk_count(sbi, blks) \
1406 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1407 stat_inc_tot_blk_count(si, blks); \
1408 si->data_blks += (blks); \
1411 #define stat_inc_node_blk_count(sbi, blks) \
1413 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1414 stat_inc_tot_blk_count(si, blks); \
1415 si->node_blks += (blks); \
1418 int f2fs_build_stats(struct f2fs_sb_info *);
1419 void f2fs_destroy_stats(struct f2fs_sb_info *);
1420 void __init f2fs_create_root_stats(void);
1421 void f2fs_destroy_root_stats(void);
1423 #define stat_inc_cp_count(si)
1424 #define stat_inc_call_count(si)
1425 #define stat_inc_bggc_count(si)
1426 #define stat_inc_dirty_dir(sbi)
1427 #define stat_dec_dirty_dir(sbi)
1428 #define stat_inc_total_hit(sb)
1429 #define stat_inc_read_hit(sb)
1430 #define stat_inc_inline_inode(inode)
1431 #define stat_dec_inline_inode(inode)
1432 #define stat_inc_seg_type(sbi, curseg)
1433 #define stat_inc_block_count(sbi, curseg)
1434 #define stat_inc_seg_count(si, type)
1435 #define stat_inc_tot_blk_count(si, blks)
1436 #define stat_inc_data_blk_count(si, blks)
1437 #define stat_inc_node_blk_count(sbi, blks)
1439 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1440 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
1441 static inline void __init f2fs_create_root_stats(void) { }
1442 static inline void f2fs_destroy_root_stats(void) { }
1445 extern const struct file_operations f2fs_dir_operations;
1446 extern const struct file_operations f2fs_file_operations;
1447 extern const struct inode_operations f2fs_file_inode_operations;
1448 extern const struct address_space_operations f2fs_dblock_aops;
1449 extern const struct address_space_operations f2fs_node_aops;
1450 extern const struct address_space_operations f2fs_meta_aops;
1451 extern const struct inode_operations f2fs_dir_inode_operations;
1452 extern const struct inode_operations f2fs_symlink_inode_operations;
1453 extern const struct inode_operations f2fs_special_inode_operations;
1458 bool f2fs_may_inline(struct inode *);
1459 int f2fs_read_inline_data(struct inode *, struct page *);
1460 int f2fs_convert_inline_data(struct inode *, pgoff_t, struct page *);
1461 int f2fs_write_inline_data(struct inode *, struct page *, unsigned int);
1462 void truncate_inline_data(struct inode *, u64);
1463 bool recover_inline_data(struct inode *, struct page *);