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 set_sbi_flag(sbi, SBI_NEED_FSCK); \
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_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
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)
59 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
60 typecheck(unsigned long long, b) && \
61 ((long long)((a) - (b)) > 0))
63 typedef u32 block_t
; /*
64 * should not change u32, since it is the on-disk block
65 * address format, __le32.
69 struct f2fs_mount_info
{
73 #define CRCPOLY_LE 0xedb88320
75 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
77 unsigned char *p
= (unsigned char *)buf
;
78 __u32 crc
= F2FS_SUPER_MAGIC
;
83 for (i
= 0; i
< 8; i
++)
84 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
89 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
91 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
95 * For checkpoint manager
109 #define DEF_BATCHED_TRIM_SECTIONS 32
110 #define BATCHED_TRIM_SEGMENTS(sbi) \
111 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
122 * For CP/NAT/SIT/SSA readahead
132 /* for the list of ino */
134 ORPHAN_INO
, /* for orphan ino list */
135 APPEND_INO
, /* for append ino list */
136 UPDATE_INO
, /* for update ino list */
137 MAX_INO_ENTRY
, /* max. list */
141 struct list_head list
; /* list head */
142 nid_t ino
; /* inode number */
146 * for the list of directory inodes or gc inodes.
147 * NOTE: there are two slab users for this structure, if we add/modify/delete
148 * fields in structure for one of slab users, it may affect fields or size of
149 * other one, in this condition, it's better to split both of slab and related
153 struct list_head list
; /* list head */
154 struct inode
*inode
; /* vfs inode pointer */
157 /* for the list of blockaddresses to be discarded */
158 struct discard_entry
{
159 struct list_head list
; /* list head */
160 block_t blkaddr
; /* block address to be discarded */
161 int len
; /* # of consecutive blocks of the discard */
164 /* for the list of fsync inodes, used only during recovery */
165 struct fsync_inode_entry
{
166 struct list_head list
; /* list head */
167 struct inode
*inode
; /* vfs inode pointer */
168 block_t blkaddr
; /* block address locating the last fsync */
169 block_t last_dentry
; /* block address locating the last dentry */
170 block_t last_inode
; /* block address locating the last inode */
173 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
174 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
176 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
177 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
178 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
179 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
181 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
182 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
184 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
186 int before
= nats_in_cursum(rs
);
187 rs
->n_nats
= cpu_to_le16(before
+ i
);
191 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
193 int before
= sits_in_cursum(rs
);
194 rs
->n_sits
= cpu_to_le16(before
+ i
);
198 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
201 if (type
== NAT_JOURNAL
)
202 return size
<= MAX_NAT_JENTRIES(sum
);
203 return size
<= MAX_SIT_JENTRIES(sum
);
209 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
210 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
211 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
213 #define F2FS_IOCTL_MAGIC 0xf5
214 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
215 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
216 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
217 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
218 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
220 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
222 * ioctl commands in 32 bit emulation
224 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
225 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
229 * For INODE and NODE manager
231 /* for directory operations */
232 struct f2fs_dentry_ptr
{
234 struct f2fs_dir_entry
*dentry
;
235 __u8 (*filename
)[F2FS_SLOT_LEN
];
239 static inline void make_dentry_ptr(struct f2fs_dentry_ptr
*d
,
243 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
244 d
->max
= NR_DENTRY_IN_BLOCK
;
245 d
->bitmap
= &t
->dentry_bitmap
;
246 d
->dentry
= t
->dentry
;
247 d
->filename
= t
->filename
;
249 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
250 d
->max
= NR_INLINE_DENTRY
;
251 d
->bitmap
= &t
->dentry_bitmap
;
252 d
->dentry
= t
->dentry
;
253 d
->filename
= t
->filename
;
258 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
259 * as its node offset to distinguish from index node blocks.
260 * But some bits are used to mark the node block.
262 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
265 ALLOC_NODE
, /* allocate a new node page if needed */
266 LOOKUP_NODE
, /* look up a node without readahead */
268 * look up a node with readahead called
273 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
275 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
277 /* vector size for gang look-up from extent cache that consists of radix tree */
278 #define EXT_TREE_VEC_SIZE 64
280 /* for in-memory extent cache entry */
281 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
283 /* number of extent info in extent cache we try to shrink */
284 #define EXTENT_CACHE_SHRINK_NUMBER 128
287 unsigned int fofs
; /* start offset in a file */
288 u32 blk
; /* start block address of the extent */
289 unsigned int len
; /* length of the extent */
293 struct rb_node rb_node
; /* rb node located in rb-tree */
294 struct list_head list
; /* node in global extent list of sbi */
295 struct extent_info ei
; /* extent info */
299 nid_t ino
; /* inode number */
300 struct rb_root root
; /* root of extent info rb-tree */
301 struct extent_node
*cached_en
; /* recently accessed extent node */
302 rwlock_t lock
; /* protect extent info rb-tree */
303 atomic_t refcount
; /* reference count of rb-tree */
304 unsigned int count
; /* # of extent node in rb-tree*/
308 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
310 #define FADVISE_COLD_BIT 0x01
311 #define FADVISE_LOST_PINO_BIT 0x02
313 #define DEF_DIR_LEVEL 0
315 struct f2fs_inode_info
{
316 struct inode vfs_inode
; /* serve a vfs inode */
317 unsigned long i_flags
; /* keep an inode flags for ioctl */
318 unsigned char i_advise
; /* use to give file attribute hints */
319 unsigned char i_dir_level
; /* use for dentry level for large dir */
320 unsigned int i_current_depth
; /* use only in directory structure */
321 unsigned int i_pino
; /* parent inode number */
322 umode_t i_acl_mode
; /* keep file acl mode temporarily */
324 /* Use below internally in f2fs*/
325 unsigned long flags
; /* use to pass per-file flags */
326 struct rw_semaphore i_sem
; /* protect fi info */
327 atomic_t dirty_pages
; /* # of dirty pages */
328 f2fs_hash_t chash
; /* hash value of given file name */
329 unsigned int clevel
; /* maximum level of given file name */
330 nid_t i_xattr_nid
; /* node id that contains xattrs */
331 unsigned long long xattr_ver
; /* cp version of xattr modification */
332 struct extent_info ext
; /* in-memory extent cache entry */
333 rwlock_t ext_lock
; /* rwlock for single extent cache */
334 struct inode_entry
*dirty_dir
; /* the pointer of dirty dir */
336 struct radix_tree_root inmem_root
; /* radix tree for inmem pages */
337 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
338 struct mutex inmem_lock
; /* lock for inmemory pages */
341 static inline void get_extent_info(struct extent_info
*ext
,
342 struct f2fs_extent i_ext
)
344 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
345 ext
->blk
= le32_to_cpu(i_ext
.blk
);
346 ext
->len
= le32_to_cpu(i_ext
.len
);
349 static inline void set_raw_extent(struct extent_info
*ext
,
350 struct f2fs_extent
*i_ext
)
352 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
353 i_ext
->blk
= cpu_to_le32(ext
->blk
);
354 i_ext
->len
= cpu_to_le32(ext
->len
);
357 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
358 u32 blk
, unsigned int len
)
365 static inline bool __is_extent_mergeable(struct extent_info
*back
,
366 struct extent_info
*front
)
368 return (back
->fofs
+ back
->len
== front
->fofs
&&
369 back
->blk
+ back
->len
== front
->blk
);
372 static inline bool __is_back_mergeable(struct extent_info
*cur
,
373 struct extent_info
*back
)
375 return __is_extent_mergeable(back
, cur
);
378 static inline bool __is_front_mergeable(struct extent_info
*cur
,
379 struct extent_info
*front
)
381 return __is_extent_mergeable(cur
, front
);
384 struct f2fs_nm_info
{
385 block_t nat_blkaddr
; /* base disk address of NAT */
386 nid_t max_nid
; /* maximum possible node ids */
387 nid_t available_nids
; /* maximum available node ids */
388 nid_t next_scan_nid
; /* the next nid to be scanned */
389 unsigned int ram_thresh
; /* control the memory footprint */
391 /* NAT cache management */
392 struct radix_tree_root nat_root
;/* root of the nat entry cache */
393 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
394 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
395 struct list_head nat_entries
; /* cached nat entry list (clean) */
396 unsigned int nat_cnt
; /* the # of cached nat entries */
397 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
399 /* free node ids management */
400 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
401 struct list_head free_nid_list
; /* a list for free nids */
402 spinlock_t free_nid_list_lock
; /* protect free nid list */
403 unsigned int fcnt
; /* the number of free node id */
404 struct mutex build_lock
; /* lock for build free nids */
407 char *nat_bitmap
; /* NAT bitmap pointer */
408 int bitmap_size
; /* bitmap size */
412 * this structure is used as one of function parameters.
413 * all the information are dedicated to a given direct node block determined
414 * by the data offset in a file.
416 struct dnode_of_data
{
417 struct inode
*inode
; /* vfs inode pointer */
418 struct page
*inode_page
; /* its inode page, NULL is possible */
419 struct page
*node_page
; /* cached direct node page */
420 nid_t nid
; /* node id of the direct node block */
421 unsigned int ofs_in_node
; /* data offset in the node page */
422 bool inode_page_locked
; /* inode page is locked or not */
423 block_t data_blkaddr
; /* block address of the node block */
426 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
427 struct page
*ipage
, struct page
*npage
, nid_t nid
)
429 memset(dn
, 0, sizeof(*dn
));
431 dn
->inode_page
= ipage
;
432 dn
->node_page
= npage
;
439 * By default, there are 6 active log areas across the whole main area.
440 * When considering hot and cold data separation to reduce cleaning overhead,
441 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
443 * In the current design, you should not change the numbers intentionally.
444 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
445 * logs individually according to the underlying devices. (default: 6)
446 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
447 * data and 8 for node logs.
449 #define NR_CURSEG_DATA_TYPE (3)
450 #define NR_CURSEG_NODE_TYPE (3)
451 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
454 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
455 CURSEG_WARM_DATA
, /* data blocks */
456 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
457 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
458 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
459 CURSEG_COLD_NODE
, /* indirect node blocks */
461 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
465 struct completion wait
;
466 struct llist_node llnode
;
470 struct flush_cmd_control
{
471 struct task_struct
*f2fs_issue_flush
; /* flush thread */
472 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
473 struct llist_head issue_list
; /* list for command issue */
474 struct llist_node
*dispatch_list
; /* list for command dispatch */
477 struct f2fs_sm_info
{
478 struct sit_info
*sit_info
; /* whole segment information */
479 struct free_segmap_info
*free_info
; /* free segment information */
480 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
481 struct curseg_info
*curseg_array
; /* active segment information */
483 block_t seg0_blkaddr
; /* block address of 0'th segment */
484 block_t main_blkaddr
; /* start block address of main area */
485 block_t ssa_blkaddr
; /* start block address of SSA area */
487 unsigned int segment_count
; /* total # of segments */
488 unsigned int main_segments
; /* # of segments in main area */
489 unsigned int reserved_segments
; /* # of reserved segments */
490 unsigned int ovp_segments
; /* # of overprovision segments */
492 /* a threshold to reclaim prefree segments */
493 unsigned int rec_prefree_segments
;
495 /* for small discard management */
496 struct list_head discard_list
; /* 4KB discard list */
497 int nr_discards
; /* # of discards in the list */
498 int max_discards
; /* max. discards to be issued */
500 /* for batched trimming */
501 unsigned int trim_sections
; /* # of sections to trim */
503 struct list_head sit_entry_set
; /* sit entry set list */
505 unsigned int ipu_policy
; /* in-place-update policy */
506 unsigned int min_ipu_util
; /* in-place-update threshold */
507 unsigned int min_fsync_blocks
; /* threshold for fsync */
509 /* for flush command control */
510 struct flush_cmd_control
*cmd_control_info
;
518 * COUNT_TYPE for monitoring
520 * f2fs monitors the number of several block types such as on-writeback,
521 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
533 * The below are the page types of bios used in submit_bio().
534 * The available types are:
535 * DATA User data pages. It operates as async mode.
536 * NODE Node pages. It operates as async mode.
537 * META FS metadata pages such as SIT, NAT, CP.
538 * NR_PAGE_TYPE The number of page types.
539 * META_FLUSH Make sure the previous pages are written
540 * with waiting the bio's completion
541 * ... Only can be used with META.
543 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
552 struct f2fs_io_info
{
553 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
554 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
555 block_t blk_addr
; /* block address to be written */
558 #define is_read_io(rw) (((rw) & 1) == READ)
559 struct f2fs_bio_info
{
560 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
561 struct bio
*bio
; /* bios to merge */
562 sector_t last_block_in_bio
; /* last block number */
563 struct f2fs_io_info fio
; /* store buffered io info. */
564 struct rw_semaphore io_rwsem
; /* blocking op for bio */
567 /* for inner inode cache management */
568 struct inode_management
{
569 struct radix_tree_root ino_root
; /* ino entry array */
570 spinlock_t ino_lock
; /* for ino entry lock */
571 struct list_head ino_list
; /* inode list head */
572 unsigned long ino_num
; /* number of entries */
575 /* For s_flag in struct f2fs_sb_info */
577 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
578 SBI_IS_CLOSE
, /* specify unmounting */
579 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
580 SBI_POR_DOING
, /* recovery is doing or not */
583 struct f2fs_sb_info
{
584 struct super_block
*sb
; /* pointer to VFS super block */
585 struct proc_dir_entry
*s_proc
; /* proc entry */
586 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
587 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
588 int s_flag
; /* flags for sbi */
590 /* for node-related operations */
591 struct f2fs_nm_info
*nm_info
; /* node manager */
592 struct inode
*node_inode
; /* cache node blocks */
594 /* for segment-related operations */
595 struct f2fs_sm_info
*sm_info
; /* segment manager */
597 /* for bio operations */
598 struct f2fs_bio_info read_io
; /* for read bios */
599 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
602 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
603 struct inode
*meta_inode
; /* cache meta blocks */
604 struct mutex cp_mutex
; /* checkpoint procedure lock */
605 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
606 struct rw_semaphore node_write
; /* locking node writes */
607 struct mutex writepages
; /* mutex for writepages() */
608 wait_queue_head_t cp_wait
;
610 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
612 /* for orphan inode, use 0'th array */
613 unsigned int max_orphans
; /* max orphan inodes */
615 /* for directory inode management */
616 struct list_head dir_inode_list
; /* dir inode list */
617 spinlock_t dir_inode_lock
; /* for dir inode list lock */
619 /* for extent tree cache */
620 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
621 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
622 struct list_head extent_list
; /* lru list for shrinker */
623 spinlock_t extent_lock
; /* locking extent lru list */
624 int total_ext_tree
; /* extent tree count */
625 atomic_t total_ext_node
; /* extent info count */
627 /* basic filesystem units */
628 unsigned int log_sectors_per_block
; /* log2 sectors per block */
629 unsigned int log_blocksize
; /* log2 block size */
630 unsigned int blocksize
; /* block size */
631 unsigned int root_ino_num
; /* root inode number*/
632 unsigned int node_ino_num
; /* node inode number*/
633 unsigned int meta_ino_num
; /* meta inode number*/
634 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
635 unsigned int blocks_per_seg
; /* blocks per segment */
636 unsigned int segs_per_sec
; /* segments per section */
637 unsigned int secs_per_zone
; /* sections per zone */
638 unsigned int total_sections
; /* total section count */
639 unsigned int total_node_count
; /* total node block count */
640 unsigned int total_valid_node_count
; /* valid node block count */
641 unsigned int total_valid_inode_count
; /* valid inode count */
642 int active_logs
; /* # of active logs */
643 int dir_level
; /* directory level */
645 block_t user_block_count
; /* # of user blocks */
646 block_t total_valid_block_count
; /* # of valid blocks */
647 block_t alloc_valid_block_count
; /* # of allocated blocks */
648 block_t last_valid_block_count
; /* for recovery */
649 u32 s_next_generation
; /* for NFS support */
650 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
652 struct f2fs_mount_info mount_opt
; /* mount options */
654 /* for cleaning operations */
655 struct mutex gc_mutex
; /* mutex for GC */
656 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
657 unsigned int cur_victim_sec
; /* current victim section num */
659 /* maximum # of trials to find a victim segment for SSR and GC */
660 unsigned int max_victim_search
;
663 * for stat information.
664 * one is for the LFS mode, and the other is for the SSR mode.
666 #ifdef CONFIG_F2FS_STAT_FS
667 struct f2fs_stat_info
*stat_info
; /* FS status information */
668 unsigned int segment_count
[2]; /* # of allocated segments */
669 unsigned int block_count
[2]; /* # of allocated blocks */
670 atomic_t inplace_count
; /* # of inplace update */
671 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
672 atomic_t inline_inode
; /* # of inline_data inodes */
673 atomic_t inline_dir
; /* # of inline_dentry inodes */
674 int bg_gc
; /* background gc calls */
675 unsigned int n_dirty_dirs
; /* # of dir inodes */
677 unsigned int last_victim
[2]; /* last victim segment # */
678 spinlock_t stat_lock
; /* lock for stat operations */
680 /* For sysfs suppport */
681 struct kobject s_kobj
;
682 struct completion s_kobj_unregister
;
688 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
690 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
693 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
695 return sb
->s_fs_info
;
698 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
700 return F2FS_SB(inode
->i_sb
);
703 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
705 return F2FS_I_SB(mapping
->host
);
708 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
710 return F2FS_M_SB(page
->mapping
);
713 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
715 return (struct f2fs_super_block
*)(sbi
->raw_super
);
718 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
720 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
723 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
725 return (struct f2fs_node
*)page_address(page
);
728 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
730 return &((struct f2fs_node
*)page_address(page
))->i
;
733 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
735 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
738 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
740 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
743 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
745 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
748 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
750 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
753 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
755 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
758 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
760 return sbi
->meta_inode
->i_mapping
;
763 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
765 return sbi
->node_inode
->i_mapping
;
768 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
770 return sbi
->s_flag
& (0x01 << type
);
773 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
775 sbi
->s_flag
|= (0x01 << type
);
778 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
780 sbi
->s_flag
&= ~(0x01 << type
);
783 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
785 return le64_to_cpu(cp
->checkpoint_ver
);
788 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
790 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
791 return ckpt_flags
& f
;
794 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
796 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
798 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
801 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
803 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
805 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
808 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
810 down_read(&sbi
->cp_rwsem
);
813 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
815 up_read(&sbi
->cp_rwsem
);
818 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
820 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
823 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
825 up_write(&sbi
->cp_rwsem
);
828 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
830 int reason
= CP_SYNC
;
832 if (test_opt(sbi
, FASTBOOT
))
833 reason
= CP_FASTBOOT
;
834 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
839 static inline bool __remain_node_summaries(int reason
)
841 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
844 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
846 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
847 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
851 * Check whether the given nid is within node id range.
853 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
855 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
857 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
862 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
865 * Check whether the inode has blocks or not
867 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
869 if (F2FS_I(inode
)->i_xattr_nid
)
870 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
872 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
875 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
877 return ofs
== XATTR_NODE_OFFSET
;
880 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
881 struct inode
*inode
, blkcnt_t count
)
883 block_t valid_block_count
;
885 spin_lock(&sbi
->stat_lock
);
887 sbi
->total_valid_block_count
+ (block_t
)count
;
888 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
889 spin_unlock(&sbi
->stat_lock
);
892 inode
->i_blocks
+= count
;
893 sbi
->total_valid_block_count
= valid_block_count
;
894 sbi
->alloc_valid_block_count
+= (block_t
)count
;
895 spin_unlock(&sbi
->stat_lock
);
899 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
903 spin_lock(&sbi
->stat_lock
);
904 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
905 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
906 inode
->i_blocks
-= count
;
907 sbi
->total_valid_block_count
-= (block_t
)count
;
908 spin_unlock(&sbi
->stat_lock
);
911 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
913 atomic_inc(&sbi
->nr_pages
[count_type
]);
914 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
917 static inline void inode_inc_dirty_pages(struct inode
*inode
)
919 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
920 if (S_ISDIR(inode
->i_mode
))
921 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
924 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
926 atomic_dec(&sbi
->nr_pages
[count_type
]);
929 static inline void inode_dec_dirty_pages(struct inode
*inode
)
931 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
))
934 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
936 if (S_ISDIR(inode
->i_mode
))
937 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
940 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
942 return atomic_read(&sbi
->nr_pages
[count_type
]);
945 static inline int get_dirty_pages(struct inode
*inode
)
947 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
950 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
952 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
953 (1 << sbi
->log_blocks_per_seg
);
954 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
955 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
958 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
960 return sbi
->total_valid_block_count
;
963 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
965 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
967 /* return NAT or SIT bitmap */
968 if (flag
== NAT_BITMAP
)
969 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
970 else if (flag
== SIT_BITMAP
)
971 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
976 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
978 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
981 if (le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
) > 0) {
982 if (flag
== NAT_BITMAP
)
983 return &ckpt
->sit_nat_version_bitmap
;
985 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
987 offset
= (flag
== NAT_BITMAP
) ?
988 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
989 return &ckpt
->sit_nat_version_bitmap
+ offset
;
993 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
996 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
997 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
999 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1002 * odd numbered checkpoint should at cp segment 0
1003 * and even segment must be at cp segment 1
1005 if (!(ckpt_version
& 1))
1006 start_addr
+= sbi
->blocks_per_seg
;
1011 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1013 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1016 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1017 struct inode
*inode
)
1019 block_t valid_block_count
;
1020 unsigned int valid_node_count
;
1022 spin_lock(&sbi
->stat_lock
);
1024 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1025 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1026 spin_unlock(&sbi
->stat_lock
);
1030 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1031 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1032 spin_unlock(&sbi
->stat_lock
);
1039 sbi
->alloc_valid_block_count
++;
1040 sbi
->total_valid_node_count
++;
1041 sbi
->total_valid_block_count
++;
1042 spin_unlock(&sbi
->stat_lock
);
1047 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1048 struct inode
*inode
)
1050 spin_lock(&sbi
->stat_lock
);
1052 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1053 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1054 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1057 sbi
->total_valid_node_count
--;
1058 sbi
->total_valid_block_count
--;
1060 spin_unlock(&sbi
->stat_lock
);
1063 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1065 return sbi
->total_valid_node_count
;
1068 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1070 spin_lock(&sbi
->stat_lock
);
1071 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1072 sbi
->total_valid_inode_count
++;
1073 spin_unlock(&sbi
->stat_lock
);
1076 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1078 spin_lock(&sbi
->stat_lock
);
1079 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1080 sbi
->total_valid_inode_count
--;
1081 spin_unlock(&sbi
->stat_lock
);
1084 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1086 return sbi
->total_valid_inode_count
;
1089 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1095 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1098 page_cache_release(page
);
1101 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1104 f2fs_put_page(dn
->node_page
, 1);
1105 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1106 f2fs_put_page(dn
->inode_page
, 0);
1107 dn
->node_page
= NULL
;
1108 dn
->inode_page
= NULL
;
1111 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1114 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1117 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1122 entry
= kmem_cache_alloc(cachep
, flags
);
1131 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1132 unsigned long index
, void *item
)
1134 while (radix_tree_insert(root
, index
, item
))
1138 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1140 static inline bool IS_INODE(struct page
*page
)
1142 struct f2fs_node
*p
= F2FS_NODE(page
);
1143 return RAW_IS_INODE(p
);
1146 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1148 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1151 static inline block_t
datablock_addr(struct page
*node_page
,
1152 unsigned int offset
)
1154 struct f2fs_node
*raw_node
;
1156 raw_node
= F2FS_NODE(node_page
);
1157 addr_array
= blkaddr_in_node(raw_node
);
1158 return le32_to_cpu(addr_array
[offset
]);
1161 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1166 mask
= 1 << (7 - (nr
& 0x07));
1167 return mask
& *addr
;
1170 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1176 mask
= 1 << (7 - (nr
& 0x07));
1182 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1188 mask
= 1 << (7 - (nr
& 0x07));
1194 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1199 mask
= 1 << (7 - (nr
& 0x07));
1203 /* used for f2fs_inode_info->flags */
1205 FI_NEW_INODE
, /* indicate newly allocated inode */
1206 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1207 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1208 FI_INC_LINK
, /* need to increment i_nlink */
1209 FI_ACL_MODE
, /* indicate acl mode */
1210 FI_NO_ALLOC
, /* should not allocate any blocks */
1211 FI_UPDATE_DIR
, /* should update inode block for consistency */
1212 FI_DELAY_IPUT
, /* used for the recovery */
1213 FI_NO_EXTENT
, /* not to use the extent cache */
1214 FI_INLINE_XATTR
, /* used for inline xattr */
1215 FI_INLINE_DATA
, /* used for inline data*/
1216 FI_INLINE_DENTRY
, /* used for inline dentry */
1217 FI_APPEND_WRITE
, /* inode has appended data */
1218 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1219 FI_NEED_IPU
, /* used for ipu per file */
1220 FI_ATOMIC_FILE
, /* indicate atomic file */
1221 FI_VOLATILE_FILE
, /* indicate volatile file */
1222 FI_DROP_CACHE
, /* drop dirty page cache */
1223 FI_DATA_EXIST
, /* indicate data exists */
1226 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1228 if (!test_bit(flag
, &fi
->flags
))
1229 set_bit(flag
, &fi
->flags
);
1232 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1234 return test_bit(flag
, &fi
->flags
);
1237 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1239 if (test_bit(flag
, &fi
->flags
))
1240 clear_bit(flag
, &fi
->flags
);
1243 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1245 fi
->i_acl_mode
= mode
;
1246 set_inode_flag(fi
, FI_ACL_MODE
);
1249 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1250 struct f2fs_inode
*ri
)
1252 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1253 set_inode_flag(fi
, FI_INLINE_XATTR
);
1254 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1255 set_inode_flag(fi
, FI_INLINE_DATA
);
1256 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1257 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1258 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1259 set_inode_flag(fi
, FI_DATA_EXIST
);
1262 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1263 struct f2fs_inode
*ri
)
1267 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1268 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1269 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1270 ri
->i_inline
|= F2FS_INLINE_DATA
;
1271 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1272 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1273 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1274 ri
->i_inline
|= F2FS_DATA_EXIST
;
1277 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1279 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1282 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1284 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1285 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1286 return DEF_ADDRS_PER_INODE
;
1289 static inline void *inline_xattr_addr(struct page
*page
)
1291 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1292 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1293 F2FS_INLINE_XATTR_ADDRS
]);
1296 static inline int inline_xattr_size(struct inode
*inode
)
1298 if (f2fs_has_inline_xattr(inode
))
1299 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1304 static inline int f2fs_has_inline_data(struct inode
*inode
)
1306 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1309 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1311 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1312 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1315 static inline int f2fs_exist_data(struct inode
*inode
)
1317 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1320 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1322 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1325 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1327 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1330 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1332 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1335 static inline void *inline_data_addr(struct page
*page
)
1337 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1338 return (void *)&(ri
->i_addr
[1]);
1341 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1343 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1346 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1348 if (!f2fs_has_inline_dentry(dir
))
1352 static inline int f2fs_readonly(struct super_block
*sb
)
1354 return sb
->s_flags
& MS_RDONLY
;
1357 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1359 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1362 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1364 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1365 sbi
->sb
->s_flags
|= MS_RDONLY
;
1368 #define get_inode_mode(i) \
1369 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1370 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1372 /* get offset of first page in next direct node */
1373 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1374 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1375 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1376 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1381 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1382 void truncate_data_blocks(struct dnode_of_data
*);
1383 int truncate_blocks(struct inode
*, u64
, bool);
1384 void f2fs_truncate(struct inode
*);
1385 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1386 int f2fs_setattr(struct dentry
*, struct iattr
*);
1387 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1388 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1389 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1390 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1395 void f2fs_set_inode_flags(struct inode
*);
1396 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1397 int try_to_free_nats(struct f2fs_sb_info
*, int);
1398 void update_inode(struct inode
*, struct page
*);
1399 void update_inode_page(struct inode
*);
1400 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1401 void f2fs_evict_inode(struct inode
*);
1402 void handle_failed_inode(struct inode
*);
1407 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1412 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1413 void set_de_type(struct f2fs_dir_entry
*, struct inode
*);
1414 struct f2fs_dir_entry
*find_target_dentry(struct qstr
*, int *,
1415 struct f2fs_dentry_ptr
*);
1416 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1418 void do_make_empty_dir(struct inode
*, struct inode
*,
1419 struct f2fs_dentry_ptr
*);
1420 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1421 const struct qstr
*, struct page
*);
1422 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1423 int room_for_filename(const void *, int, int);
1424 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1425 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1427 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1428 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1429 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1430 struct page
*, struct inode
*);
1431 int update_dent_inode(struct inode
*, const struct qstr
*);
1432 void f2fs_update_dentry(struct inode
*, struct f2fs_dentry_ptr
*,
1433 const struct qstr
*, f2fs_hash_t
, unsigned int);
1434 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1435 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1437 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1438 int f2fs_make_empty(struct inode
*, struct inode
*);
1439 bool f2fs_empty_dir(struct inode
*);
1441 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1443 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1450 int f2fs_sync_fs(struct super_block
*, int);
1451 extern __printf(3, 4)
1452 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1457 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1462 struct dnode_of_data
;
1465 bool available_free_memory(struct f2fs_sb_info
*, int);
1466 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1467 bool has_fsynced_inode(struct f2fs_sb_info
*, nid_t
);
1468 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1469 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1470 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1471 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1472 int truncate_xattr_node(struct inode
*, struct page
*);
1473 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1474 void remove_inode_page(struct inode
*);
1475 struct page
*new_inode_page(struct inode
*);
1476 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1477 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1478 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1479 struct page
*get_node_page_ra(struct page
*, int);
1480 void sync_inode_page(struct dnode_of_data
*);
1481 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1482 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1483 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1484 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1485 void recover_inline_xattr(struct inode
*, struct page
*);
1486 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1487 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1488 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1489 struct f2fs_summary_block
*);
1490 void flush_nat_entries(struct f2fs_sb_info
*);
1491 int build_node_manager(struct f2fs_sb_info
*);
1492 void destroy_node_manager(struct f2fs_sb_info
*);
1493 int __init
create_node_manager_caches(void);
1494 void destroy_node_manager_caches(void);
1499 void register_inmem_page(struct inode
*, struct page
*);
1500 void commit_inmem_pages(struct inode
*, bool);
1501 void f2fs_balance_fs(struct f2fs_sb_info
*);
1502 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1503 int f2fs_issue_flush(struct f2fs_sb_info
*);
1504 int create_flush_cmd_control(struct f2fs_sb_info
*);
1505 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1506 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1507 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1508 void clear_prefree_segments(struct f2fs_sb_info
*);
1509 void release_discard_addrs(struct f2fs_sb_info
*);
1510 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1511 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1512 void allocate_new_segments(struct f2fs_sb_info
*);
1513 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1514 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1515 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1516 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1517 unsigned int, struct f2fs_io_info
*);
1518 void write_data_page(struct page
*, struct dnode_of_data
*,
1519 struct f2fs_io_info
*);
1520 void rewrite_data_page(struct page
*, struct f2fs_io_info
*);
1521 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1522 struct f2fs_summary
*, block_t
, block_t
);
1523 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1524 block_t
, block_t
*, struct f2fs_summary
*, int);
1525 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1526 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1527 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1528 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1529 int, unsigned int, int);
1530 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1531 int build_segment_manager(struct f2fs_sb_info
*);
1532 void destroy_segment_manager(struct f2fs_sb_info
*);
1533 int __init
create_segment_manager_caches(void);
1534 void destroy_segment_manager_caches(void);
1539 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1540 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1541 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1542 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1543 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1544 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1545 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1546 void release_dirty_inode(struct f2fs_sb_info
*);
1547 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1548 int acquire_orphan_inode(struct f2fs_sb_info
*);
1549 void release_orphan_inode(struct f2fs_sb_info
*);
1550 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1551 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1552 void recover_orphan_inodes(struct f2fs_sb_info
*);
1553 int get_valid_checkpoint(struct f2fs_sb_info
*);
1554 void update_dirty_page(struct inode
*, struct page
*);
1555 void add_dirty_dir_inode(struct inode
*);
1556 void remove_dirty_dir_inode(struct inode
*);
1557 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1558 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1559 void init_ino_entry_info(struct f2fs_sb_info
*);
1560 int __init
create_checkpoint_caches(void);
1561 void destroy_checkpoint_caches(void);
1566 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1567 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*,
1568 struct f2fs_io_info
*);
1569 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*,
1570 struct f2fs_io_info
*);
1571 int reserve_new_block(struct dnode_of_data
*);
1572 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1573 void f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
1574 void f2fs_destroy_extent_tree(struct inode
*);
1575 void f2fs_update_extent_cache(struct dnode_of_data
*);
1576 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1577 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1578 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1579 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1580 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1581 void init_extent_cache_info(struct f2fs_sb_info
*);
1582 int __init
create_extent_cache(void);
1583 void destroy_extent_cache(void);
1584 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1585 int f2fs_release_page(struct page
*, gfp_t
);
1590 int start_gc_thread(struct f2fs_sb_info
*);
1591 void stop_gc_thread(struct f2fs_sb_info
*);
1592 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1593 int f2fs_gc(struct f2fs_sb_info
*);
1594 void build_gc_manager(struct f2fs_sb_info
*);
1599 int recover_fsync_data(struct f2fs_sb_info
*);
1600 bool space_for_roll_forward(struct f2fs_sb_info
*);
1605 #ifdef CONFIG_F2FS_STAT_FS
1606 struct f2fs_stat_info
{
1607 struct list_head stat_list
;
1608 struct f2fs_sb_info
*sbi
;
1609 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1610 int main_area_segs
, main_area_sections
, main_area_zones
;
1611 int hit_ext
, total_ext
, ext_tree
, ext_node
;
1612 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1613 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1614 int total_count
, utilization
;
1615 int bg_gc
, inline_inode
, inline_dir
, inmem_pages
, wb_pages
;
1616 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1617 unsigned int bimodal
, avg_vblocks
;
1618 int util_free
, util_valid
, util_invalid
;
1619 int rsvd_segs
, overp_segs
;
1620 int dirty_count
, node_pages
, meta_pages
;
1621 int prefree_count
, call_count
, cp_count
;
1622 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1623 int tot_blks
, data_blks
, node_blks
;
1624 int curseg
[NR_CURSEG_TYPE
];
1625 int cursec
[NR_CURSEG_TYPE
];
1626 int curzone
[NR_CURSEG_TYPE
];
1628 unsigned int segment_count
[2];
1629 unsigned int block_count
[2];
1630 unsigned int inplace_count
;
1631 unsigned base_mem
, cache_mem
, page_mem
;
1634 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1636 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1639 #define stat_inc_cp_count(si) ((si)->cp_count++)
1640 #define stat_inc_call_count(si) ((si)->call_count++)
1641 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1642 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1643 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1644 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1645 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1646 #define stat_inc_inline_inode(inode) \
1648 if (f2fs_has_inline_data(inode)) \
1649 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1651 #define stat_dec_inline_inode(inode) \
1653 if (f2fs_has_inline_data(inode)) \
1654 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1656 #define stat_inc_inline_dir(inode) \
1658 if (f2fs_has_inline_dentry(inode)) \
1659 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1661 #define stat_dec_inline_dir(inode) \
1663 if (f2fs_has_inline_dentry(inode)) \
1664 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1666 #define stat_inc_seg_type(sbi, curseg) \
1667 ((sbi)->segment_count[(curseg)->alloc_type]++)
1668 #define stat_inc_block_count(sbi, curseg) \
1669 ((sbi)->block_count[(curseg)->alloc_type]++)
1670 #define stat_inc_inplace_blocks(sbi) \
1671 (atomic_inc(&(sbi)->inplace_count))
1672 #define stat_inc_seg_count(sbi, type) \
1674 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1676 if (type == SUM_TYPE_DATA) \
1682 #define stat_inc_tot_blk_count(si, blks) \
1683 (si->tot_blks += (blks))
1685 #define stat_inc_data_blk_count(sbi, blks) \
1687 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1688 stat_inc_tot_blk_count(si, blks); \
1689 si->data_blks += (blks); \
1692 #define stat_inc_node_blk_count(sbi, blks) \
1694 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1695 stat_inc_tot_blk_count(si, blks); \
1696 si->node_blks += (blks); \
1699 int f2fs_build_stats(struct f2fs_sb_info
*);
1700 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1701 void __init
f2fs_create_root_stats(void);
1702 void f2fs_destroy_root_stats(void);
1704 #define stat_inc_cp_count(si)
1705 #define stat_inc_call_count(si)
1706 #define stat_inc_bggc_count(si)
1707 #define stat_inc_dirty_dir(sbi)
1708 #define stat_dec_dirty_dir(sbi)
1709 #define stat_inc_total_hit(sb)
1710 #define stat_inc_read_hit(sb)
1711 #define stat_inc_inline_inode(inode)
1712 #define stat_dec_inline_inode(inode)
1713 #define stat_inc_inline_dir(inode)
1714 #define stat_dec_inline_dir(inode)
1715 #define stat_inc_seg_type(sbi, curseg)
1716 #define stat_inc_block_count(sbi, curseg)
1717 #define stat_inc_inplace_blocks(sbi)
1718 #define stat_inc_seg_count(si, type)
1719 #define stat_inc_tot_blk_count(si, blks)
1720 #define stat_inc_data_blk_count(si, blks)
1721 #define stat_inc_node_blk_count(sbi, blks)
1723 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1724 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1725 static inline void __init
f2fs_create_root_stats(void) { }
1726 static inline void f2fs_destroy_root_stats(void) { }
1729 extern const struct file_operations f2fs_dir_operations
;
1730 extern const struct file_operations f2fs_file_operations
;
1731 extern const struct inode_operations f2fs_file_inode_operations
;
1732 extern const struct address_space_operations f2fs_dblock_aops
;
1733 extern const struct address_space_operations f2fs_node_aops
;
1734 extern const struct address_space_operations f2fs_meta_aops
;
1735 extern const struct inode_operations f2fs_dir_inode_operations
;
1736 extern const struct inode_operations f2fs_symlink_inode_operations
;
1737 extern const struct inode_operations f2fs_special_inode_operations
;
1738 extern struct kmem_cache
*inode_entry_slab
;
1743 bool f2fs_may_inline(struct inode
*);
1744 void read_inline_data(struct page
*, struct page
*);
1745 int f2fs_read_inline_data(struct inode
*, struct page
*);
1746 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
1747 int f2fs_convert_inline_inode(struct inode
*);
1748 int f2fs_write_inline_data(struct inode
*, struct page
*);
1749 bool recover_inline_data(struct inode
*, struct page
*);
1750 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*, struct qstr
*,
1752 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
1753 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
1754 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*);
1755 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
1756 struct inode
*, struct inode
*);
1757 bool f2fs_empty_inline_dir(struct inode
*);
1758 int f2fs_read_inline_dir(struct file
*, struct dir_context
*);