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
110 #define DEF_BATCHED_TRIM_SECTIONS 32
111 #define BATCHED_TRIM_SEGMENTS(sbi) \
112 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
123 * For CP/NAT/SIT/SSA readahead
133 /* for the list of ino */
135 ORPHAN_INO
, /* for orphan ino list */
136 APPEND_INO
, /* for append ino list */
137 UPDATE_INO
, /* for update ino list */
138 MAX_INO_ENTRY
, /* max. list */
142 struct list_head list
; /* list head */
143 nid_t ino
; /* inode number */
147 * for the list of directory inodes or gc inodes.
148 * NOTE: there are two slab users for this structure, if we add/modify/delete
149 * fields in structure for one of slab users, it may affect fields or size of
150 * other one, in this condition, it's better to split both of slab and related
154 struct list_head list
; /* list head */
155 struct inode
*inode
; /* vfs inode pointer */
158 /* for the list of blockaddresses to be discarded */
159 struct discard_entry
{
160 struct list_head list
; /* list head */
161 block_t blkaddr
; /* block address to be discarded */
162 int len
; /* # of consecutive blocks of the discard */
165 /* for the list of fsync inodes, used only during recovery */
166 struct fsync_inode_entry
{
167 struct list_head list
; /* list head */
168 struct inode
*inode
; /* vfs inode pointer */
169 block_t blkaddr
; /* block address locating the last fsync */
170 block_t last_dentry
; /* block address locating the last dentry */
171 block_t last_inode
; /* block address locating the last inode */
174 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
175 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
177 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
178 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
179 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
180 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
182 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
183 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
185 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
187 int before
= nats_in_cursum(rs
);
188 rs
->n_nats
= cpu_to_le16(before
+ i
);
192 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
194 int before
= sits_in_cursum(rs
);
195 rs
->n_sits
= cpu_to_le16(before
+ i
);
199 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
202 if (type
== NAT_JOURNAL
)
203 return size
<= MAX_NAT_JENTRIES(sum
);
204 return size
<= MAX_SIT_JENTRIES(sum
);
210 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
211 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
212 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
214 #define F2FS_IOCTL_MAGIC 0xf5
215 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
216 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
217 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
218 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
219 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
222 * should be same as XFS_IOC_GOINGDOWN.
223 * Flags for going down operation used by FS_IOC_GOINGDOWN
225 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
226 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
227 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
228 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
230 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
232 * ioctl commands in 32 bit emulation
234 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
235 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
239 * For INODE and NODE manager
241 /* for directory operations */
242 struct f2fs_dentry_ptr
{
244 struct f2fs_dir_entry
*dentry
;
245 __u8 (*filename
)[F2FS_SLOT_LEN
];
249 static inline void make_dentry_ptr(struct f2fs_dentry_ptr
*d
,
253 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
254 d
->max
= NR_DENTRY_IN_BLOCK
;
255 d
->bitmap
= &t
->dentry_bitmap
;
256 d
->dentry
= t
->dentry
;
257 d
->filename
= t
->filename
;
259 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
260 d
->max
= NR_INLINE_DENTRY
;
261 d
->bitmap
= &t
->dentry_bitmap
;
262 d
->dentry
= t
->dentry
;
263 d
->filename
= t
->filename
;
268 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
269 * as its node offset to distinguish from index node blocks.
270 * But some bits are used to mark the node block.
272 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
275 ALLOC_NODE
, /* allocate a new node page if needed */
276 LOOKUP_NODE
, /* look up a node without readahead */
278 * look up a node with readahead called
283 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
285 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
287 /* vector size for gang look-up from extent cache that consists of radix tree */
288 #define EXT_TREE_VEC_SIZE 64
290 /* for in-memory extent cache entry */
291 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
293 /* number of extent info in extent cache we try to shrink */
294 #define EXTENT_CACHE_SHRINK_NUMBER 128
297 unsigned int fofs
; /* start offset in a file */
298 u32 blk
; /* start block address of the extent */
299 unsigned int len
; /* length of the extent */
303 struct rb_node rb_node
; /* rb node located in rb-tree */
304 struct list_head list
; /* node in global extent list of sbi */
305 struct extent_info ei
; /* extent info */
309 nid_t ino
; /* inode number */
310 struct rb_root root
; /* root of extent info rb-tree */
311 struct extent_node
*cached_en
; /* recently accessed extent node */
312 rwlock_t lock
; /* protect extent info rb-tree */
313 atomic_t refcount
; /* reference count of rb-tree */
314 unsigned int count
; /* # of extent node in rb-tree*/
318 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
320 #define FADVISE_COLD_BIT 0x01
321 #define FADVISE_LOST_PINO_BIT 0x02
323 #define DEF_DIR_LEVEL 0
325 struct f2fs_inode_info
{
326 struct inode vfs_inode
; /* serve a vfs inode */
327 unsigned long i_flags
; /* keep an inode flags for ioctl */
328 unsigned char i_advise
; /* use to give file attribute hints */
329 unsigned char i_dir_level
; /* use for dentry level for large dir */
330 unsigned int i_current_depth
; /* use only in directory structure */
331 unsigned int i_pino
; /* parent inode number */
332 umode_t i_acl_mode
; /* keep file acl mode temporarily */
334 /* Use below internally in f2fs*/
335 unsigned long flags
; /* use to pass per-file flags */
336 struct rw_semaphore i_sem
; /* protect fi info */
337 atomic_t dirty_pages
; /* # of dirty pages */
338 f2fs_hash_t chash
; /* hash value of given file name */
339 unsigned int clevel
; /* maximum level of given file name */
340 nid_t i_xattr_nid
; /* node id that contains xattrs */
341 unsigned long long xattr_ver
; /* cp version of xattr modification */
342 struct extent_info ext
; /* in-memory extent cache entry */
343 rwlock_t ext_lock
; /* rwlock for single extent cache */
344 struct inode_entry
*dirty_dir
; /* the pointer of dirty dir */
346 struct radix_tree_root inmem_root
; /* radix tree for inmem pages */
347 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
348 struct mutex inmem_lock
; /* lock for inmemory pages */
351 static inline void get_extent_info(struct extent_info
*ext
,
352 struct f2fs_extent i_ext
)
354 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
355 ext
->blk
= le32_to_cpu(i_ext
.blk
);
356 ext
->len
= le32_to_cpu(i_ext
.len
);
359 static inline void set_raw_extent(struct extent_info
*ext
,
360 struct f2fs_extent
*i_ext
)
362 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
363 i_ext
->blk
= cpu_to_le32(ext
->blk
);
364 i_ext
->len
= cpu_to_le32(ext
->len
);
367 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
368 u32 blk
, unsigned int len
)
375 static inline bool __is_extent_same(struct extent_info
*ei1
,
376 struct extent_info
*ei2
)
378 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
379 ei1
->len
== ei2
->len
);
382 static inline bool __is_extent_mergeable(struct extent_info
*back
,
383 struct extent_info
*front
)
385 return (back
->fofs
+ back
->len
== front
->fofs
&&
386 back
->blk
+ back
->len
== front
->blk
);
389 static inline bool __is_back_mergeable(struct extent_info
*cur
,
390 struct extent_info
*back
)
392 return __is_extent_mergeable(back
, cur
);
395 static inline bool __is_front_mergeable(struct extent_info
*cur
,
396 struct extent_info
*front
)
398 return __is_extent_mergeable(cur
, front
);
401 struct f2fs_nm_info
{
402 block_t nat_blkaddr
; /* base disk address of NAT */
403 nid_t max_nid
; /* maximum possible node ids */
404 nid_t available_nids
; /* maximum available node ids */
405 nid_t next_scan_nid
; /* the next nid to be scanned */
406 unsigned int ram_thresh
; /* control the memory footprint */
408 /* NAT cache management */
409 struct radix_tree_root nat_root
;/* root of the nat entry cache */
410 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
411 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
412 struct list_head nat_entries
; /* cached nat entry list (clean) */
413 unsigned int nat_cnt
; /* the # of cached nat entries */
414 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
416 /* free node ids management */
417 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
418 struct list_head free_nid_list
; /* a list for free nids */
419 spinlock_t free_nid_list_lock
; /* protect free nid list */
420 unsigned int fcnt
; /* the number of free node id */
421 struct mutex build_lock
; /* lock for build free nids */
424 char *nat_bitmap
; /* NAT bitmap pointer */
425 int bitmap_size
; /* bitmap size */
429 * this structure is used as one of function parameters.
430 * all the information are dedicated to a given direct node block determined
431 * by the data offset in a file.
433 struct dnode_of_data
{
434 struct inode
*inode
; /* vfs inode pointer */
435 struct page
*inode_page
; /* its inode page, NULL is possible */
436 struct page
*node_page
; /* cached direct node page */
437 nid_t nid
; /* node id of the direct node block */
438 unsigned int ofs_in_node
; /* data offset in the node page */
439 bool inode_page_locked
; /* inode page is locked or not */
440 block_t data_blkaddr
; /* block address of the node block */
443 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
444 struct page
*ipage
, struct page
*npage
, nid_t nid
)
446 memset(dn
, 0, sizeof(*dn
));
448 dn
->inode_page
= ipage
;
449 dn
->node_page
= npage
;
456 * By default, there are 6 active log areas across the whole main area.
457 * When considering hot and cold data separation to reduce cleaning overhead,
458 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
460 * In the current design, you should not change the numbers intentionally.
461 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
462 * logs individually according to the underlying devices. (default: 6)
463 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
464 * data and 8 for node logs.
466 #define NR_CURSEG_DATA_TYPE (3)
467 #define NR_CURSEG_NODE_TYPE (3)
468 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
471 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
472 CURSEG_WARM_DATA
, /* data blocks */
473 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
474 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
475 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
476 CURSEG_COLD_NODE
, /* indirect node blocks */
478 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
482 struct completion wait
;
483 struct llist_node llnode
;
487 struct flush_cmd_control
{
488 struct task_struct
*f2fs_issue_flush
; /* flush thread */
489 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
490 struct llist_head issue_list
; /* list for command issue */
491 struct llist_node
*dispatch_list
; /* list for command dispatch */
494 struct f2fs_sm_info
{
495 struct sit_info
*sit_info
; /* whole segment information */
496 struct free_segmap_info
*free_info
; /* free segment information */
497 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
498 struct curseg_info
*curseg_array
; /* active segment information */
500 block_t seg0_blkaddr
; /* block address of 0'th segment */
501 block_t main_blkaddr
; /* start block address of main area */
502 block_t ssa_blkaddr
; /* start block address of SSA area */
504 unsigned int segment_count
; /* total # of segments */
505 unsigned int main_segments
; /* # of segments in main area */
506 unsigned int reserved_segments
; /* # of reserved segments */
507 unsigned int ovp_segments
; /* # of overprovision segments */
509 /* a threshold to reclaim prefree segments */
510 unsigned int rec_prefree_segments
;
512 /* for small discard management */
513 struct list_head discard_list
; /* 4KB discard list */
514 int nr_discards
; /* # of discards in the list */
515 int max_discards
; /* max. discards to be issued */
517 /* for batched trimming */
518 unsigned int trim_sections
; /* # of sections to trim */
520 struct list_head sit_entry_set
; /* sit entry set list */
522 unsigned int ipu_policy
; /* in-place-update policy */
523 unsigned int min_ipu_util
; /* in-place-update threshold */
524 unsigned int min_fsync_blocks
; /* threshold for fsync */
526 /* for flush command control */
527 struct flush_cmd_control
*cmd_control_info
;
535 * COUNT_TYPE for monitoring
537 * f2fs monitors the number of several block types such as on-writeback,
538 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
550 * The below are the page types of bios used in submit_bio().
551 * The available types are:
552 * DATA User data pages. It operates as async mode.
553 * NODE Node pages. It operates as async mode.
554 * META FS metadata pages such as SIT, NAT, CP.
555 * NR_PAGE_TYPE The number of page types.
556 * META_FLUSH Make sure the previous pages are written
557 * with waiting the bio's completion
558 * ... Only can be used with META.
560 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
567 INMEM
, /* the below types are used by tracepoints only. */
573 struct f2fs_io_info
{
574 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
575 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
576 block_t blk_addr
; /* block address to be written */
579 #define is_read_io(rw) (((rw) & 1) == READ)
580 struct f2fs_bio_info
{
581 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
582 struct bio
*bio
; /* bios to merge */
583 sector_t last_block_in_bio
; /* last block number */
584 struct f2fs_io_info fio
; /* store buffered io info. */
585 struct rw_semaphore io_rwsem
; /* blocking op for bio */
588 /* for inner inode cache management */
589 struct inode_management
{
590 struct radix_tree_root ino_root
; /* ino entry array */
591 spinlock_t ino_lock
; /* for ino entry lock */
592 struct list_head ino_list
; /* inode list head */
593 unsigned long ino_num
; /* number of entries */
596 /* For s_flag in struct f2fs_sb_info */
598 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
599 SBI_IS_CLOSE
, /* specify unmounting */
600 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
601 SBI_POR_DOING
, /* recovery is doing or not */
604 struct f2fs_sb_info
{
605 struct super_block
*sb
; /* pointer to VFS super block */
606 struct proc_dir_entry
*s_proc
; /* proc entry */
607 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
608 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
609 int s_flag
; /* flags for sbi */
611 /* for node-related operations */
612 struct f2fs_nm_info
*nm_info
; /* node manager */
613 struct inode
*node_inode
; /* cache node blocks */
615 /* for segment-related operations */
616 struct f2fs_sm_info
*sm_info
; /* segment manager */
618 /* for bio operations */
619 struct f2fs_bio_info read_io
; /* for read bios */
620 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
623 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
624 struct inode
*meta_inode
; /* cache meta blocks */
625 struct mutex cp_mutex
; /* checkpoint procedure lock */
626 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
627 struct rw_semaphore node_write
; /* locking node writes */
628 wait_queue_head_t cp_wait
;
630 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
632 /* for orphan inode, use 0'th array */
633 unsigned int max_orphans
; /* max orphan inodes */
635 /* for directory inode management */
636 struct list_head dir_inode_list
; /* dir inode list */
637 spinlock_t dir_inode_lock
; /* for dir inode list lock */
639 /* for extent tree cache */
640 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
641 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
642 struct list_head extent_list
; /* lru list for shrinker */
643 spinlock_t extent_lock
; /* locking extent lru list */
644 int total_ext_tree
; /* extent tree count */
645 atomic_t total_ext_node
; /* extent info count */
647 /* basic filesystem units */
648 unsigned int log_sectors_per_block
; /* log2 sectors per block */
649 unsigned int log_blocksize
; /* log2 block size */
650 unsigned int blocksize
; /* block size */
651 unsigned int root_ino_num
; /* root inode number*/
652 unsigned int node_ino_num
; /* node inode number*/
653 unsigned int meta_ino_num
; /* meta inode number*/
654 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
655 unsigned int blocks_per_seg
; /* blocks per segment */
656 unsigned int segs_per_sec
; /* segments per section */
657 unsigned int secs_per_zone
; /* sections per zone */
658 unsigned int total_sections
; /* total section count */
659 unsigned int total_node_count
; /* total node block count */
660 unsigned int total_valid_node_count
; /* valid node block count */
661 unsigned int total_valid_inode_count
; /* valid inode count */
662 int active_logs
; /* # of active logs */
663 int dir_level
; /* directory level */
665 block_t user_block_count
; /* # of user blocks */
666 block_t total_valid_block_count
; /* # of valid blocks */
667 block_t alloc_valid_block_count
; /* # of allocated blocks */
668 block_t last_valid_block_count
; /* for recovery */
669 u32 s_next_generation
; /* for NFS support */
670 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
672 struct f2fs_mount_info mount_opt
; /* mount options */
674 /* for cleaning operations */
675 struct mutex gc_mutex
; /* mutex for GC */
676 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
677 unsigned int cur_victim_sec
; /* current victim section num */
679 /* maximum # of trials to find a victim segment for SSR and GC */
680 unsigned int max_victim_search
;
683 * for stat information.
684 * one is for the LFS mode, and the other is for the SSR mode.
686 #ifdef CONFIG_F2FS_STAT_FS
687 struct f2fs_stat_info
*stat_info
; /* FS status information */
688 unsigned int segment_count
[2]; /* # of allocated segments */
689 unsigned int block_count
[2]; /* # of allocated blocks */
690 atomic_t inplace_count
; /* # of inplace update */
691 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
692 atomic_t inline_inode
; /* # of inline_data inodes */
693 atomic_t inline_dir
; /* # of inline_dentry inodes */
694 int bg_gc
; /* background gc calls */
695 unsigned int n_dirty_dirs
; /* # of dir inodes */
697 unsigned int last_victim
[2]; /* last victim segment # */
698 spinlock_t stat_lock
; /* lock for stat operations */
700 /* For sysfs suppport */
701 struct kobject s_kobj
;
702 struct completion s_kobj_unregister
;
708 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
710 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
713 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
715 return sb
->s_fs_info
;
718 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
720 return F2FS_SB(inode
->i_sb
);
723 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
725 return F2FS_I_SB(mapping
->host
);
728 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
730 return F2FS_M_SB(page
->mapping
);
733 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
735 return (struct f2fs_super_block
*)(sbi
->raw_super
);
738 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
740 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
743 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
745 return (struct f2fs_node
*)page_address(page
);
748 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
750 return &((struct f2fs_node
*)page_address(page
))->i
;
753 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
755 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
758 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
760 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
763 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
765 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
768 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
770 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
773 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
775 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
778 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
780 return sbi
->meta_inode
->i_mapping
;
783 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
785 return sbi
->node_inode
->i_mapping
;
788 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
790 return sbi
->s_flag
& (0x01 << type
);
793 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
795 sbi
->s_flag
|= (0x01 << type
);
798 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
800 sbi
->s_flag
&= ~(0x01 << type
);
803 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
805 return le64_to_cpu(cp
->checkpoint_ver
);
808 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
810 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
811 return ckpt_flags
& f
;
814 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
816 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
818 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
821 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
823 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
825 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
828 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
830 down_read(&sbi
->cp_rwsem
);
833 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
835 up_read(&sbi
->cp_rwsem
);
838 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
840 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
843 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
845 up_write(&sbi
->cp_rwsem
);
848 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
850 int reason
= CP_SYNC
;
852 if (test_opt(sbi
, FASTBOOT
))
853 reason
= CP_FASTBOOT
;
854 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
859 static inline bool __remain_node_summaries(int reason
)
861 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
864 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
866 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
867 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
871 * Check whether the given nid is within node id range.
873 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
875 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
877 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
882 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
885 * Check whether the inode has blocks or not
887 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
889 if (F2FS_I(inode
)->i_xattr_nid
)
890 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
892 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
895 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
897 return ofs
== XATTR_NODE_OFFSET
;
900 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
901 struct inode
*inode
, blkcnt_t count
)
903 block_t valid_block_count
;
905 spin_lock(&sbi
->stat_lock
);
907 sbi
->total_valid_block_count
+ (block_t
)count
;
908 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
909 spin_unlock(&sbi
->stat_lock
);
912 inode
->i_blocks
+= count
;
913 sbi
->total_valid_block_count
= valid_block_count
;
914 sbi
->alloc_valid_block_count
+= (block_t
)count
;
915 spin_unlock(&sbi
->stat_lock
);
919 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
923 spin_lock(&sbi
->stat_lock
);
924 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
925 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
926 inode
->i_blocks
-= count
;
927 sbi
->total_valid_block_count
-= (block_t
)count
;
928 spin_unlock(&sbi
->stat_lock
);
931 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
933 atomic_inc(&sbi
->nr_pages
[count_type
]);
934 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
937 static inline void inode_inc_dirty_pages(struct inode
*inode
)
939 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
940 if (S_ISDIR(inode
->i_mode
))
941 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
944 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
946 atomic_dec(&sbi
->nr_pages
[count_type
]);
949 static inline void inode_dec_dirty_pages(struct inode
*inode
)
951 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
))
954 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
956 if (S_ISDIR(inode
->i_mode
))
957 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
960 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
962 return atomic_read(&sbi
->nr_pages
[count_type
]);
965 static inline int get_dirty_pages(struct inode
*inode
)
967 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
970 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
972 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
973 (1 << sbi
->log_blocks_per_seg
);
974 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
975 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
978 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
980 return sbi
->total_valid_block_count
;
983 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
985 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
987 /* return NAT or SIT bitmap */
988 if (flag
== NAT_BITMAP
)
989 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
990 else if (flag
== SIT_BITMAP
)
991 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
996 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
998 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1001 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1003 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1006 if (__cp_payload(sbi
) > 0) {
1007 if (flag
== NAT_BITMAP
)
1008 return &ckpt
->sit_nat_version_bitmap
;
1010 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1012 offset
= (flag
== NAT_BITMAP
) ?
1013 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1014 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1018 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1021 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1022 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1024 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1027 * odd numbered checkpoint should at cp segment 0
1028 * and even segment must be at cp segment 1
1030 if (!(ckpt_version
& 1))
1031 start_addr
+= sbi
->blocks_per_seg
;
1036 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1038 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1041 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1042 struct inode
*inode
)
1044 block_t valid_block_count
;
1045 unsigned int valid_node_count
;
1047 spin_lock(&sbi
->stat_lock
);
1049 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1050 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1051 spin_unlock(&sbi
->stat_lock
);
1055 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1056 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1057 spin_unlock(&sbi
->stat_lock
);
1064 sbi
->alloc_valid_block_count
++;
1065 sbi
->total_valid_node_count
++;
1066 sbi
->total_valid_block_count
++;
1067 spin_unlock(&sbi
->stat_lock
);
1072 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1073 struct inode
*inode
)
1075 spin_lock(&sbi
->stat_lock
);
1077 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1078 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1079 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1082 sbi
->total_valid_node_count
--;
1083 sbi
->total_valid_block_count
--;
1085 spin_unlock(&sbi
->stat_lock
);
1088 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1090 return sbi
->total_valid_node_count
;
1093 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1095 spin_lock(&sbi
->stat_lock
);
1096 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1097 sbi
->total_valid_inode_count
++;
1098 spin_unlock(&sbi
->stat_lock
);
1101 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1103 spin_lock(&sbi
->stat_lock
);
1104 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1105 sbi
->total_valid_inode_count
--;
1106 spin_unlock(&sbi
->stat_lock
);
1109 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1111 return sbi
->total_valid_inode_count
;
1114 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1120 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1123 page_cache_release(page
);
1126 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1129 f2fs_put_page(dn
->node_page
, 1);
1130 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1131 f2fs_put_page(dn
->inode_page
, 0);
1132 dn
->node_page
= NULL
;
1133 dn
->inode_page
= NULL
;
1136 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1139 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1142 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1147 entry
= kmem_cache_alloc(cachep
, flags
);
1156 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1157 unsigned long index
, void *item
)
1159 while (radix_tree_insert(root
, index
, item
))
1163 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1165 static inline bool IS_INODE(struct page
*page
)
1167 struct f2fs_node
*p
= F2FS_NODE(page
);
1168 return RAW_IS_INODE(p
);
1171 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1173 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1176 static inline block_t
datablock_addr(struct page
*node_page
,
1177 unsigned int offset
)
1179 struct f2fs_node
*raw_node
;
1181 raw_node
= F2FS_NODE(node_page
);
1182 addr_array
= blkaddr_in_node(raw_node
);
1183 return le32_to_cpu(addr_array
[offset
]);
1186 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1191 mask
= 1 << (7 - (nr
& 0x07));
1192 return mask
& *addr
;
1195 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1201 mask
= 1 << (7 - (nr
& 0x07));
1207 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1213 mask
= 1 << (7 - (nr
& 0x07));
1219 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1224 mask
= 1 << (7 - (nr
& 0x07));
1228 /* used for f2fs_inode_info->flags */
1230 FI_NEW_INODE
, /* indicate newly allocated inode */
1231 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1232 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1233 FI_INC_LINK
, /* need to increment i_nlink */
1234 FI_ACL_MODE
, /* indicate acl mode */
1235 FI_NO_ALLOC
, /* should not allocate any blocks */
1236 FI_UPDATE_DIR
, /* should update inode block for consistency */
1237 FI_DELAY_IPUT
, /* used for the recovery */
1238 FI_NO_EXTENT
, /* not to use the extent cache */
1239 FI_INLINE_XATTR
, /* used for inline xattr */
1240 FI_INLINE_DATA
, /* used for inline data*/
1241 FI_INLINE_DENTRY
, /* used for inline dentry */
1242 FI_APPEND_WRITE
, /* inode has appended data */
1243 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1244 FI_NEED_IPU
, /* used for ipu per file */
1245 FI_ATOMIC_FILE
, /* indicate atomic file */
1246 FI_VOLATILE_FILE
, /* indicate volatile file */
1247 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1248 FI_DROP_CACHE
, /* drop dirty page cache */
1249 FI_DATA_EXIST
, /* indicate data exists */
1250 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1253 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1255 if (!test_bit(flag
, &fi
->flags
))
1256 set_bit(flag
, &fi
->flags
);
1259 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1261 return test_bit(flag
, &fi
->flags
);
1264 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1266 if (test_bit(flag
, &fi
->flags
))
1267 clear_bit(flag
, &fi
->flags
);
1270 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1272 fi
->i_acl_mode
= mode
;
1273 set_inode_flag(fi
, FI_ACL_MODE
);
1276 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1277 struct f2fs_inode
*ri
)
1279 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1280 set_inode_flag(fi
, FI_INLINE_XATTR
);
1281 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1282 set_inode_flag(fi
, FI_INLINE_DATA
);
1283 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1284 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1285 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1286 set_inode_flag(fi
, FI_DATA_EXIST
);
1287 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1288 set_inode_flag(fi
, FI_INLINE_DOTS
);
1291 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1292 struct f2fs_inode
*ri
)
1296 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1297 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1298 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1299 ri
->i_inline
|= F2FS_INLINE_DATA
;
1300 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1301 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1302 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1303 ri
->i_inline
|= F2FS_DATA_EXIST
;
1304 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1305 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1308 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1310 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1313 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1315 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1316 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1317 return DEF_ADDRS_PER_INODE
;
1320 static inline void *inline_xattr_addr(struct page
*page
)
1322 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1323 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1324 F2FS_INLINE_XATTR_ADDRS
]);
1327 static inline int inline_xattr_size(struct inode
*inode
)
1329 if (f2fs_has_inline_xattr(inode
))
1330 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1335 static inline int f2fs_has_inline_data(struct inode
*inode
)
1337 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1340 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1342 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1343 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1346 static inline int f2fs_exist_data(struct inode
*inode
)
1348 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1351 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1353 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1356 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1358 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1361 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1363 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1366 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1368 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1371 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1373 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1376 static inline void *inline_data_addr(struct page
*page
)
1378 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1379 return (void *)&(ri
->i_addr
[1]);
1382 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1384 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1387 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1389 if (!f2fs_has_inline_dentry(dir
))
1393 static inline int f2fs_readonly(struct super_block
*sb
)
1395 return sb
->s_flags
& MS_RDONLY
;
1398 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1400 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1403 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1405 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1406 sbi
->sb
->s_flags
|= MS_RDONLY
;
1409 #define get_inode_mode(i) \
1410 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1411 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1413 /* get offset of first page in next direct node */
1414 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1415 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1416 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1417 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1422 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1423 void truncate_data_blocks(struct dnode_of_data
*);
1424 int truncate_blocks(struct inode
*, u64
, bool);
1425 void f2fs_truncate(struct inode
*);
1426 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1427 int f2fs_setattr(struct dentry
*, struct iattr
*);
1428 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1429 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1430 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1431 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1436 void f2fs_set_inode_flags(struct inode
*);
1437 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1438 int try_to_free_nats(struct f2fs_sb_info
*, int);
1439 void update_inode(struct inode
*, struct page
*);
1440 void update_inode_page(struct inode
*);
1441 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1442 void f2fs_evict_inode(struct inode
*);
1443 void handle_failed_inode(struct inode
*);
1448 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1453 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1454 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1455 struct f2fs_dir_entry
*find_target_dentry(struct qstr
*, int *,
1456 struct f2fs_dentry_ptr
*);
1457 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1459 void do_make_empty_dir(struct inode
*, struct inode
*,
1460 struct f2fs_dentry_ptr
*);
1461 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1462 const struct qstr
*, struct page
*);
1463 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1464 int room_for_filename(const void *, int, int);
1465 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1466 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1468 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1469 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1470 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1471 struct page
*, struct inode
*);
1472 int update_dent_inode(struct inode
*, const struct qstr
*);
1473 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1474 const struct qstr
*, f2fs_hash_t
, unsigned int);
1475 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1477 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1479 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1480 int f2fs_make_empty(struct inode
*, struct inode
*);
1481 bool f2fs_empty_dir(struct inode
*);
1483 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1485 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1486 inode
, inode
->i_ino
, inode
->i_mode
);
1492 int f2fs_sync_fs(struct super_block
*, int);
1493 extern __printf(3, 4)
1494 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1499 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1504 struct dnode_of_data
;
1507 bool available_free_memory(struct f2fs_sb_info
*, int);
1508 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1509 bool has_fsynced_inode(struct f2fs_sb_info
*, nid_t
);
1510 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1511 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1512 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1513 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1514 int truncate_xattr_node(struct inode
*, struct page
*);
1515 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1516 void remove_inode_page(struct inode
*);
1517 struct page
*new_inode_page(struct inode
*);
1518 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1519 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1520 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1521 struct page
*get_node_page_ra(struct page
*, int);
1522 void sync_inode_page(struct dnode_of_data
*);
1523 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1524 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1525 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1526 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1527 void recover_inline_xattr(struct inode
*, struct page
*);
1528 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1529 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1530 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1531 struct f2fs_summary_block
*);
1532 void flush_nat_entries(struct f2fs_sb_info
*);
1533 int build_node_manager(struct f2fs_sb_info
*);
1534 void destroy_node_manager(struct f2fs_sb_info
*);
1535 int __init
create_node_manager_caches(void);
1536 void destroy_node_manager_caches(void);
1541 void register_inmem_page(struct inode
*, struct page
*);
1542 void commit_inmem_pages(struct inode
*, bool);
1543 void f2fs_balance_fs(struct f2fs_sb_info
*);
1544 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1545 int f2fs_issue_flush(struct f2fs_sb_info
*);
1546 int create_flush_cmd_control(struct f2fs_sb_info
*);
1547 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1548 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1549 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1550 void clear_prefree_segments(struct f2fs_sb_info
*);
1551 void release_discard_addrs(struct f2fs_sb_info
*);
1552 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1553 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1554 void allocate_new_segments(struct f2fs_sb_info
*);
1555 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1556 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1557 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1558 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1559 unsigned int, struct f2fs_io_info
*);
1560 void write_data_page(struct page
*, struct dnode_of_data
*,
1561 struct f2fs_io_info
*);
1562 void rewrite_data_page(struct page
*, struct f2fs_io_info
*);
1563 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1564 struct f2fs_summary
*, block_t
, block_t
);
1565 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1566 block_t
, block_t
*, struct f2fs_summary
*, int);
1567 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1568 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1569 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1570 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1571 int, unsigned int, int);
1572 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1573 int build_segment_manager(struct f2fs_sb_info
*);
1574 void destroy_segment_manager(struct f2fs_sb_info
*);
1575 int __init
create_segment_manager_caches(void);
1576 void destroy_segment_manager_caches(void);
1581 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1582 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1583 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1584 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1585 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1586 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1587 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1588 void release_dirty_inode(struct f2fs_sb_info
*);
1589 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1590 int acquire_orphan_inode(struct f2fs_sb_info
*);
1591 void release_orphan_inode(struct f2fs_sb_info
*);
1592 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1593 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1594 void recover_orphan_inodes(struct f2fs_sb_info
*);
1595 int get_valid_checkpoint(struct f2fs_sb_info
*);
1596 void update_dirty_page(struct inode
*, struct page
*);
1597 void add_dirty_dir_inode(struct inode
*);
1598 void remove_dirty_dir_inode(struct inode
*);
1599 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1600 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1601 void init_ino_entry_info(struct f2fs_sb_info
*);
1602 int __init
create_checkpoint_caches(void);
1603 void destroy_checkpoint_caches(void);
1608 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1609 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*,
1610 struct f2fs_io_info
*);
1611 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*,
1612 struct f2fs_io_info
*);
1613 void set_data_blkaddr(struct dnode_of_data
*);
1614 int reserve_new_block(struct dnode_of_data
*);
1615 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1616 void f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
1617 void f2fs_destroy_extent_tree(struct inode
*);
1618 void f2fs_init_extent_cache(struct inode
*, struct f2fs_extent
*);
1619 void f2fs_update_extent_cache(struct dnode_of_data
*);
1620 void f2fs_preserve_extent_tree(struct inode
*);
1621 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1622 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1623 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1624 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1625 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1626 void init_extent_cache_info(struct f2fs_sb_info
*);
1627 int __init
create_extent_cache(void);
1628 void destroy_extent_cache(void);
1629 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1630 int f2fs_release_page(struct page
*, gfp_t
);
1635 int start_gc_thread(struct f2fs_sb_info
*);
1636 void stop_gc_thread(struct f2fs_sb_info
*);
1637 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1638 int f2fs_gc(struct f2fs_sb_info
*);
1639 void build_gc_manager(struct f2fs_sb_info
*);
1644 int recover_fsync_data(struct f2fs_sb_info
*);
1645 bool space_for_roll_forward(struct f2fs_sb_info
*);
1650 #ifdef CONFIG_F2FS_STAT_FS
1651 struct f2fs_stat_info
{
1652 struct list_head stat_list
;
1653 struct f2fs_sb_info
*sbi
;
1654 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1655 int main_area_segs
, main_area_sections
, main_area_zones
;
1656 int hit_ext
, total_ext
, ext_tree
, ext_node
;
1657 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1658 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1659 int total_count
, utilization
;
1660 int bg_gc
, inline_inode
, inline_dir
, inmem_pages
, wb_pages
;
1661 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1662 unsigned int bimodal
, avg_vblocks
;
1663 int util_free
, util_valid
, util_invalid
;
1664 int rsvd_segs
, overp_segs
;
1665 int dirty_count
, node_pages
, meta_pages
;
1666 int prefree_count
, call_count
, cp_count
;
1667 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1668 int bg_node_segs
, bg_data_segs
;
1669 int tot_blks
, data_blks
, node_blks
;
1670 int bg_data_blks
, bg_node_blks
;
1671 int curseg
[NR_CURSEG_TYPE
];
1672 int cursec
[NR_CURSEG_TYPE
];
1673 int curzone
[NR_CURSEG_TYPE
];
1675 unsigned int segment_count
[2];
1676 unsigned int block_count
[2];
1677 unsigned int inplace_count
;
1678 unsigned base_mem
, cache_mem
, page_mem
;
1681 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1683 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1686 #define stat_inc_cp_count(si) ((si)->cp_count++)
1687 #define stat_inc_call_count(si) ((si)->call_count++)
1688 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1689 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1690 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1691 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1692 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1693 #define stat_inc_inline_inode(inode) \
1695 if (f2fs_has_inline_data(inode)) \
1696 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1698 #define stat_dec_inline_inode(inode) \
1700 if (f2fs_has_inline_data(inode)) \
1701 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1703 #define stat_inc_inline_dir(inode) \
1705 if (f2fs_has_inline_dentry(inode)) \
1706 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1708 #define stat_dec_inline_dir(inode) \
1710 if (f2fs_has_inline_dentry(inode)) \
1711 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1713 #define stat_inc_seg_type(sbi, curseg) \
1714 ((sbi)->segment_count[(curseg)->alloc_type]++)
1715 #define stat_inc_block_count(sbi, curseg) \
1716 ((sbi)->block_count[(curseg)->alloc_type]++)
1717 #define stat_inc_inplace_blocks(sbi) \
1718 (atomic_inc(&(sbi)->inplace_count))
1719 #define stat_inc_seg_count(sbi, type, gc_type) \
1721 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1723 if (type == SUM_TYPE_DATA) { \
1725 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1728 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1732 #define stat_inc_tot_blk_count(si, blks) \
1733 (si->tot_blks += (blks))
1735 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
1737 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1738 stat_inc_tot_blk_count(si, blks); \
1739 si->data_blks += (blks); \
1740 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
1743 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
1745 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1746 stat_inc_tot_blk_count(si, blks); \
1747 si->node_blks += (blks); \
1748 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
1751 int f2fs_build_stats(struct f2fs_sb_info
*);
1752 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1753 void __init
f2fs_create_root_stats(void);
1754 void f2fs_destroy_root_stats(void);
1756 #define stat_inc_cp_count(si)
1757 #define stat_inc_call_count(si)
1758 #define stat_inc_bggc_count(si)
1759 #define stat_inc_dirty_dir(sbi)
1760 #define stat_dec_dirty_dir(sbi)
1761 #define stat_inc_total_hit(sb)
1762 #define stat_inc_read_hit(sb)
1763 #define stat_inc_inline_inode(inode)
1764 #define stat_dec_inline_inode(inode)
1765 #define stat_inc_inline_dir(inode)
1766 #define stat_dec_inline_dir(inode)
1767 #define stat_inc_seg_type(sbi, curseg)
1768 #define stat_inc_block_count(sbi, curseg)
1769 #define stat_inc_inplace_blocks(sbi)
1770 #define stat_inc_seg_count(sbi, type, gc_type)
1771 #define stat_inc_tot_blk_count(si, blks)
1772 #define stat_inc_data_blk_count(sbi, blks, gc_type)
1773 #define stat_inc_node_blk_count(sbi, blks, gc_type)
1775 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1776 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1777 static inline void __init
f2fs_create_root_stats(void) { }
1778 static inline void f2fs_destroy_root_stats(void) { }
1781 extern const struct file_operations f2fs_dir_operations
;
1782 extern const struct file_operations f2fs_file_operations
;
1783 extern const struct inode_operations f2fs_file_inode_operations
;
1784 extern const struct address_space_operations f2fs_dblock_aops
;
1785 extern const struct address_space_operations f2fs_node_aops
;
1786 extern const struct address_space_operations f2fs_meta_aops
;
1787 extern const struct inode_operations f2fs_dir_inode_operations
;
1788 extern const struct inode_operations f2fs_symlink_inode_operations
;
1789 extern const struct inode_operations f2fs_special_inode_operations
;
1790 extern struct kmem_cache
*inode_entry_slab
;
1795 bool f2fs_may_inline(struct inode
*);
1796 void read_inline_data(struct page
*, struct page
*);
1797 bool truncate_inline_inode(struct page
*, u64
);
1798 int f2fs_read_inline_data(struct inode
*, struct page
*);
1799 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
1800 int f2fs_convert_inline_inode(struct inode
*);
1801 int f2fs_write_inline_data(struct inode
*, struct page
*);
1802 bool recover_inline_data(struct inode
*, struct page
*);
1803 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*, struct qstr
*,
1805 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
1806 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
1807 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
1809 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
1810 struct inode
*, struct inode
*);
1811 bool f2fs_empty_inline_dir(struct inode
*);
1812 int f2fs_read_inline_dir(struct file
*, struct dir_context
*);