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 rwlock_t lock
; /* protect extent info rb-tree */
302 atomic_t refcount
; /* reference count of rb-tree */
303 unsigned int count
; /* # of extent node in rb-tree*/
307 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
309 #define FADVISE_COLD_BIT 0x01
310 #define FADVISE_LOST_PINO_BIT 0x02
312 #define DEF_DIR_LEVEL 0
314 struct f2fs_inode_info
{
315 struct inode vfs_inode
; /* serve a vfs inode */
316 unsigned long i_flags
; /* keep an inode flags for ioctl */
317 unsigned char i_advise
; /* use to give file attribute hints */
318 unsigned char i_dir_level
; /* use for dentry level for large dir */
319 unsigned int i_current_depth
; /* use only in directory structure */
320 unsigned int i_pino
; /* parent inode number */
321 umode_t i_acl_mode
; /* keep file acl mode temporarily */
323 /* Use below internally in f2fs*/
324 unsigned long flags
; /* use to pass per-file flags */
325 struct rw_semaphore i_sem
; /* protect fi info */
326 atomic_t dirty_pages
; /* # of dirty pages */
327 f2fs_hash_t chash
; /* hash value of given file name */
328 unsigned int clevel
; /* maximum level of given file name */
329 nid_t i_xattr_nid
; /* node id that contains xattrs */
330 unsigned long long xattr_ver
; /* cp version of xattr modification */
331 struct extent_info ext
; /* in-memory extent cache entry */
332 rwlock_t ext_lock
; /* rwlock for single extent cache */
333 struct inode_entry
*dirty_dir
; /* the pointer of dirty dir */
335 struct radix_tree_root inmem_root
; /* radix tree for inmem pages */
336 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
337 struct mutex inmem_lock
; /* lock for inmemory pages */
340 static inline void get_extent_info(struct extent_info
*ext
,
341 struct f2fs_extent i_ext
)
343 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
344 ext
->blk
= le32_to_cpu(i_ext
.blk
);
345 ext
->len
= le32_to_cpu(i_ext
.len
);
348 static inline void set_raw_extent(struct extent_info
*ext
,
349 struct f2fs_extent
*i_ext
)
351 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
352 i_ext
->blk
= cpu_to_le32(ext
->blk
);
353 i_ext
->len
= cpu_to_le32(ext
->len
);
356 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
357 u32 blk
, unsigned int len
)
364 static inline bool __is_extent_mergeable(struct extent_info
*back
,
365 struct extent_info
*front
)
367 return (back
->fofs
+ back
->len
== front
->fofs
&&
368 back
->blk
+ back
->len
== front
->blk
);
371 static inline bool __is_back_mergeable(struct extent_info
*cur
,
372 struct extent_info
*back
)
374 return __is_extent_mergeable(back
, cur
);
377 static inline bool __is_front_mergeable(struct extent_info
*cur
,
378 struct extent_info
*front
)
380 return __is_extent_mergeable(cur
, front
);
383 struct f2fs_nm_info
{
384 block_t nat_blkaddr
; /* base disk address of NAT */
385 nid_t max_nid
; /* maximum possible node ids */
386 nid_t available_nids
; /* maximum available node ids */
387 nid_t next_scan_nid
; /* the next nid to be scanned */
388 unsigned int ram_thresh
; /* control the memory footprint */
390 /* NAT cache management */
391 struct radix_tree_root nat_root
;/* root of the nat entry cache */
392 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
393 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
394 struct list_head nat_entries
; /* cached nat entry list (clean) */
395 unsigned int nat_cnt
; /* the # of cached nat entries */
396 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
398 /* free node ids management */
399 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
400 struct list_head free_nid_list
; /* a list for free nids */
401 spinlock_t free_nid_list_lock
; /* protect free nid list */
402 unsigned int fcnt
; /* the number of free node id */
403 struct mutex build_lock
; /* lock for build free nids */
406 char *nat_bitmap
; /* NAT bitmap pointer */
407 int bitmap_size
; /* bitmap size */
411 * this structure is used as one of function parameters.
412 * all the information are dedicated to a given direct node block determined
413 * by the data offset in a file.
415 struct dnode_of_data
{
416 struct inode
*inode
; /* vfs inode pointer */
417 struct page
*inode_page
; /* its inode page, NULL is possible */
418 struct page
*node_page
; /* cached direct node page */
419 nid_t nid
; /* node id of the direct node block */
420 unsigned int ofs_in_node
; /* data offset in the node page */
421 bool inode_page_locked
; /* inode page is locked or not */
422 block_t data_blkaddr
; /* block address of the node block */
425 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
426 struct page
*ipage
, struct page
*npage
, nid_t nid
)
428 memset(dn
, 0, sizeof(*dn
));
430 dn
->inode_page
= ipage
;
431 dn
->node_page
= npage
;
438 * By default, there are 6 active log areas across the whole main area.
439 * When considering hot and cold data separation to reduce cleaning overhead,
440 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
442 * In the current design, you should not change the numbers intentionally.
443 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
444 * logs individually according to the underlying devices. (default: 6)
445 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
446 * data and 8 for node logs.
448 #define NR_CURSEG_DATA_TYPE (3)
449 #define NR_CURSEG_NODE_TYPE (3)
450 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
453 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
454 CURSEG_WARM_DATA
, /* data blocks */
455 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
456 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
457 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
458 CURSEG_COLD_NODE
, /* indirect node blocks */
460 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
464 struct completion wait
;
465 struct llist_node llnode
;
469 struct flush_cmd_control
{
470 struct task_struct
*f2fs_issue_flush
; /* flush thread */
471 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
472 struct llist_head issue_list
; /* list for command issue */
473 struct llist_node
*dispatch_list
; /* list for command dispatch */
476 struct f2fs_sm_info
{
477 struct sit_info
*sit_info
; /* whole segment information */
478 struct free_segmap_info
*free_info
; /* free segment information */
479 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
480 struct curseg_info
*curseg_array
; /* active segment information */
482 block_t seg0_blkaddr
; /* block address of 0'th segment */
483 block_t main_blkaddr
; /* start block address of main area */
484 block_t ssa_blkaddr
; /* start block address of SSA area */
486 unsigned int segment_count
; /* total # of segments */
487 unsigned int main_segments
; /* # of segments in main area */
488 unsigned int reserved_segments
; /* # of reserved segments */
489 unsigned int ovp_segments
; /* # of overprovision segments */
491 /* a threshold to reclaim prefree segments */
492 unsigned int rec_prefree_segments
;
494 /* for small discard management */
495 struct list_head discard_list
; /* 4KB discard list */
496 int nr_discards
; /* # of discards in the list */
497 int max_discards
; /* max. discards to be issued */
499 /* for batched trimming */
500 unsigned int trim_sections
; /* # of sections to trim */
502 struct list_head sit_entry_set
; /* sit entry set list */
504 unsigned int ipu_policy
; /* in-place-update policy */
505 unsigned int min_ipu_util
; /* in-place-update threshold */
506 unsigned int min_fsync_blocks
; /* threshold for fsync */
508 /* for flush command control */
509 struct flush_cmd_control
*cmd_control_info
;
517 * COUNT_TYPE for monitoring
519 * f2fs monitors the number of several block types such as on-writeback,
520 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
532 * The below are the page types of bios used in submit_bio().
533 * The available types are:
534 * DATA User data pages. It operates as async mode.
535 * NODE Node pages. It operates as async mode.
536 * META FS metadata pages such as SIT, NAT, CP.
537 * NR_PAGE_TYPE The number of page types.
538 * META_FLUSH Make sure the previous pages are written
539 * with waiting the bio's completion
540 * ... Only can be used with META.
542 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
551 struct f2fs_io_info
{
552 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
553 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
554 block_t blk_addr
; /* block address to be written */
557 #define is_read_io(rw) (((rw) & 1) == READ)
558 struct f2fs_bio_info
{
559 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
560 struct bio
*bio
; /* bios to merge */
561 sector_t last_block_in_bio
; /* last block number */
562 struct f2fs_io_info fio
; /* store buffered io info. */
563 struct rw_semaphore io_rwsem
; /* blocking op for bio */
566 /* for inner inode cache management */
567 struct inode_management
{
568 struct radix_tree_root ino_root
; /* ino entry array */
569 spinlock_t ino_lock
; /* for ino entry lock */
570 struct list_head ino_list
; /* inode list head */
571 unsigned long ino_num
; /* number of entries */
574 /* For s_flag in struct f2fs_sb_info */
576 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
577 SBI_IS_CLOSE
, /* specify unmounting */
578 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
579 SBI_POR_DOING
, /* recovery is doing or not */
582 struct f2fs_sb_info
{
583 struct super_block
*sb
; /* pointer to VFS super block */
584 struct proc_dir_entry
*s_proc
; /* proc entry */
585 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
586 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
587 int s_flag
; /* flags for sbi */
589 /* for node-related operations */
590 struct f2fs_nm_info
*nm_info
; /* node manager */
591 struct inode
*node_inode
; /* cache node blocks */
593 /* for segment-related operations */
594 struct f2fs_sm_info
*sm_info
; /* segment manager */
596 /* for bio operations */
597 struct f2fs_bio_info read_io
; /* for read bios */
598 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
601 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
602 struct inode
*meta_inode
; /* cache meta blocks */
603 struct mutex cp_mutex
; /* checkpoint procedure lock */
604 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
605 struct rw_semaphore node_write
; /* locking node writes */
606 struct mutex writepages
; /* mutex for writepages() */
607 wait_queue_head_t cp_wait
;
609 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
611 /* for orphan inode, use 0'th array */
612 unsigned int max_orphans
; /* max orphan inodes */
614 /* for directory inode management */
615 struct list_head dir_inode_list
; /* dir inode list */
616 spinlock_t dir_inode_lock
; /* for dir inode list lock */
618 /* for extent tree cache */
619 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
620 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
621 struct list_head extent_list
; /* lru list for shrinker */
622 spinlock_t extent_lock
; /* locking extent lru list */
623 int total_ext_tree
; /* extent tree count */
624 atomic_t total_ext_node
; /* extent info count */
626 /* basic filesystem units */
627 unsigned int log_sectors_per_block
; /* log2 sectors per block */
628 unsigned int log_blocksize
; /* log2 block size */
629 unsigned int blocksize
; /* block size */
630 unsigned int root_ino_num
; /* root inode number*/
631 unsigned int node_ino_num
; /* node inode number*/
632 unsigned int meta_ino_num
; /* meta inode number*/
633 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
634 unsigned int blocks_per_seg
; /* blocks per segment */
635 unsigned int segs_per_sec
; /* segments per section */
636 unsigned int secs_per_zone
; /* sections per zone */
637 unsigned int total_sections
; /* total section count */
638 unsigned int total_node_count
; /* total node block count */
639 unsigned int total_valid_node_count
; /* valid node block count */
640 unsigned int total_valid_inode_count
; /* valid inode count */
641 int active_logs
; /* # of active logs */
642 int dir_level
; /* directory level */
644 block_t user_block_count
; /* # of user blocks */
645 block_t total_valid_block_count
; /* # of valid blocks */
646 block_t alloc_valid_block_count
; /* # of allocated blocks */
647 block_t last_valid_block_count
; /* for recovery */
648 u32 s_next_generation
; /* for NFS support */
649 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
651 struct f2fs_mount_info mount_opt
; /* mount options */
653 /* for cleaning operations */
654 struct mutex gc_mutex
; /* mutex for GC */
655 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
656 unsigned int cur_victim_sec
; /* current victim section num */
658 /* maximum # of trials to find a victim segment for SSR and GC */
659 unsigned int max_victim_search
;
662 * for stat information.
663 * one is for the LFS mode, and the other is for the SSR mode.
665 #ifdef CONFIG_F2FS_STAT_FS
666 struct f2fs_stat_info
*stat_info
; /* FS status information */
667 unsigned int segment_count
[2]; /* # of allocated segments */
668 unsigned int block_count
[2]; /* # of allocated blocks */
669 atomic_t inplace_count
; /* # of inplace update */
670 int total_hit_ext
, read_hit_ext
; /* extent cache hit ratio */
671 atomic_t inline_inode
; /* # of inline_data inodes */
672 atomic_t inline_dir
; /* # of inline_dentry inodes */
673 int bg_gc
; /* background gc calls */
674 unsigned int n_dirty_dirs
; /* # of dir inodes */
676 unsigned int last_victim
[2]; /* last victim segment # */
677 spinlock_t stat_lock
; /* lock for stat operations */
679 /* For sysfs suppport */
680 struct kobject s_kobj
;
681 struct completion s_kobj_unregister
;
687 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
689 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
692 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
694 return sb
->s_fs_info
;
697 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
699 return F2FS_SB(inode
->i_sb
);
702 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
704 return F2FS_I_SB(mapping
->host
);
707 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
709 return F2FS_M_SB(page
->mapping
);
712 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
714 return (struct f2fs_super_block
*)(sbi
->raw_super
);
717 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
719 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
722 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
724 return (struct f2fs_node
*)page_address(page
);
727 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
729 return &((struct f2fs_node
*)page_address(page
))->i
;
732 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
734 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
737 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
739 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
742 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
744 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
747 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
749 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
752 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
754 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
757 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
759 return sbi
->meta_inode
->i_mapping
;
762 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
764 return sbi
->node_inode
->i_mapping
;
767 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
769 return sbi
->s_flag
& (0x01 << type
);
772 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
774 sbi
->s_flag
|= (0x01 << type
);
777 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
779 sbi
->s_flag
&= ~(0x01 << type
);
782 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
784 return le64_to_cpu(cp
->checkpoint_ver
);
787 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
789 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
790 return ckpt_flags
& f
;
793 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
795 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
797 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
800 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
802 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
804 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
807 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
809 down_read(&sbi
->cp_rwsem
);
812 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
814 up_read(&sbi
->cp_rwsem
);
817 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
819 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
822 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
824 up_write(&sbi
->cp_rwsem
);
827 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
829 int reason
= CP_SYNC
;
831 if (test_opt(sbi
, FASTBOOT
))
832 reason
= CP_FASTBOOT
;
833 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
838 static inline bool __remain_node_summaries(int reason
)
840 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
843 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
845 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
846 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
850 * Check whether the given nid is within node id range.
852 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
854 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
856 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
861 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
864 * Check whether the inode has blocks or not
866 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
868 if (F2FS_I(inode
)->i_xattr_nid
)
869 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
871 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
874 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
876 return ofs
== XATTR_NODE_OFFSET
;
879 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
880 struct inode
*inode
, blkcnt_t count
)
882 block_t valid_block_count
;
884 spin_lock(&sbi
->stat_lock
);
886 sbi
->total_valid_block_count
+ (block_t
)count
;
887 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
888 spin_unlock(&sbi
->stat_lock
);
891 inode
->i_blocks
+= count
;
892 sbi
->total_valid_block_count
= valid_block_count
;
893 sbi
->alloc_valid_block_count
+= (block_t
)count
;
894 spin_unlock(&sbi
->stat_lock
);
898 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
902 spin_lock(&sbi
->stat_lock
);
903 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
904 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
905 inode
->i_blocks
-= count
;
906 sbi
->total_valid_block_count
-= (block_t
)count
;
907 spin_unlock(&sbi
->stat_lock
);
910 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
912 atomic_inc(&sbi
->nr_pages
[count_type
]);
913 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
916 static inline void inode_inc_dirty_pages(struct inode
*inode
)
918 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
919 if (S_ISDIR(inode
->i_mode
))
920 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
923 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
925 atomic_dec(&sbi
->nr_pages
[count_type
]);
928 static inline void inode_dec_dirty_pages(struct inode
*inode
)
930 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
))
933 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
935 if (S_ISDIR(inode
->i_mode
))
936 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
939 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
941 return atomic_read(&sbi
->nr_pages
[count_type
]);
944 static inline int get_dirty_pages(struct inode
*inode
)
946 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
949 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
951 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
952 (1 << sbi
->log_blocks_per_seg
);
953 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
954 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
957 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
959 return sbi
->total_valid_block_count
;
962 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
964 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
966 /* return NAT or SIT bitmap */
967 if (flag
== NAT_BITMAP
)
968 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
969 else if (flag
== SIT_BITMAP
)
970 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
975 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
977 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
980 if (le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
) > 0) {
981 if (flag
== NAT_BITMAP
)
982 return &ckpt
->sit_nat_version_bitmap
;
984 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
986 offset
= (flag
== NAT_BITMAP
) ?
987 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
988 return &ckpt
->sit_nat_version_bitmap
+ offset
;
992 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
995 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
996 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
998 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1001 * odd numbered checkpoint should at cp segment 0
1002 * and even segment must be at cp segment 1
1004 if (!(ckpt_version
& 1))
1005 start_addr
+= sbi
->blocks_per_seg
;
1010 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1012 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1015 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1016 struct inode
*inode
)
1018 block_t valid_block_count
;
1019 unsigned int valid_node_count
;
1021 spin_lock(&sbi
->stat_lock
);
1023 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1024 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1025 spin_unlock(&sbi
->stat_lock
);
1029 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1030 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1031 spin_unlock(&sbi
->stat_lock
);
1038 sbi
->alloc_valid_block_count
++;
1039 sbi
->total_valid_node_count
++;
1040 sbi
->total_valid_block_count
++;
1041 spin_unlock(&sbi
->stat_lock
);
1046 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1047 struct inode
*inode
)
1049 spin_lock(&sbi
->stat_lock
);
1051 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1052 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1053 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1056 sbi
->total_valid_node_count
--;
1057 sbi
->total_valid_block_count
--;
1059 spin_unlock(&sbi
->stat_lock
);
1062 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1064 return sbi
->total_valid_node_count
;
1067 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1069 spin_lock(&sbi
->stat_lock
);
1070 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1071 sbi
->total_valid_inode_count
++;
1072 spin_unlock(&sbi
->stat_lock
);
1075 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1077 spin_lock(&sbi
->stat_lock
);
1078 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1079 sbi
->total_valid_inode_count
--;
1080 spin_unlock(&sbi
->stat_lock
);
1083 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1085 return sbi
->total_valid_inode_count
;
1088 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1094 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1097 page_cache_release(page
);
1100 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1103 f2fs_put_page(dn
->node_page
, 1);
1104 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1105 f2fs_put_page(dn
->inode_page
, 0);
1106 dn
->node_page
= NULL
;
1107 dn
->inode_page
= NULL
;
1110 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1113 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1116 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1121 entry
= kmem_cache_alloc(cachep
, flags
);
1130 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1131 unsigned long index
, void *item
)
1133 while (radix_tree_insert(root
, index
, item
))
1137 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1139 static inline bool IS_INODE(struct page
*page
)
1141 struct f2fs_node
*p
= F2FS_NODE(page
);
1142 return RAW_IS_INODE(p
);
1145 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1147 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1150 static inline block_t
datablock_addr(struct page
*node_page
,
1151 unsigned int offset
)
1153 struct f2fs_node
*raw_node
;
1155 raw_node
= F2FS_NODE(node_page
);
1156 addr_array
= blkaddr_in_node(raw_node
);
1157 return le32_to_cpu(addr_array
[offset
]);
1160 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1165 mask
= 1 << (7 - (nr
& 0x07));
1166 return mask
& *addr
;
1169 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1175 mask
= 1 << (7 - (nr
& 0x07));
1181 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1187 mask
= 1 << (7 - (nr
& 0x07));
1193 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1198 mask
= 1 << (7 - (nr
& 0x07));
1202 /* used for f2fs_inode_info->flags */
1204 FI_NEW_INODE
, /* indicate newly allocated inode */
1205 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1206 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1207 FI_INC_LINK
, /* need to increment i_nlink */
1208 FI_ACL_MODE
, /* indicate acl mode */
1209 FI_NO_ALLOC
, /* should not allocate any blocks */
1210 FI_UPDATE_DIR
, /* should update inode block for consistency */
1211 FI_DELAY_IPUT
, /* used for the recovery */
1212 FI_NO_EXTENT
, /* not to use the extent cache */
1213 FI_INLINE_XATTR
, /* used for inline xattr */
1214 FI_INLINE_DATA
, /* used for inline data*/
1215 FI_INLINE_DENTRY
, /* used for inline dentry */
1216 FI_APPEND_WRITE
, /* inode has appended data */
1217 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1218 FI_NEED_IPU
, /* used for ipu per file */
1219 FI_ATOMIC_FILE
, /* indicate atomic file */
1220 FI_VOLATILE_FILE
, /* indicate volatile file */
1221 FI_DROP_CACHE
, /* drop dirty page cache */
1222 FI_DATA_EXIST
, /* indicate data exists */
1225 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1227 if (!test_bit(flag
, &fi
->flags
))
1228 set_bit(flag
, &fi
->flags
);
1231 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1233 return test_bit(flag
, &fi
->flags
);
1236 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1238 if (test_bit(flag
, &fi
->flags
))
1239 clear_bit(flag
, &fi
->flags
);
1242 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1244 fi
->i_acl_mode
= mode
;
1245 set_inode_flag(fi
, FI_ACL_MODE
);
1248 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1249 struct f2fs_inode
*ri
)
1251 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1252 set_inode_flag(fi
, FI_INLINE_XATTR
);
1253 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1254 set_inode_flag(fi
, FI_INLINE_DATA
);
1255 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1256 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1257 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1258 set_inode_flag(fi
, FI_DATA_EXIST
);
1261 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1262 struct f2fs_inode
*ri
)
1266 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1267 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1268 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1269 ri
->i_inline
|= F2FS_INLINE_DATA
;
1270 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1271 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1272 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1273 ri
->i_inline
|= F2FS_DATA_EXIST
;
1276 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1278 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1281 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1283 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1284 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1285 return DEF_ADDRS_PER_INODE
;
1288 static inline void *inline_xattr_addr(struct page
*page
)
1290 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1291 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1292 F2FS_INLINE_XATTR_ADDRS
]);
1295 static inline int inline_xattr_size(struct inode
*inode
)
1297 if (f2fs_has_inline_xattr(inode
))
1298 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1303 static inline int f2fs_has_inline_data(struct inode
*inode
)
1305 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1308 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1310 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1311 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1314 static inline int f2fs_exist_data(struct inode
*inode
)
1316 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1319 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1321 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1324 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1326 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1329 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1331 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1334 static inline void *inline_data_addr(struct page
*page
)
1336 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1337 return (void *)&(ri
->i_addr
[1]);
1340 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1342 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1345 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1347 if (!f2fs_has_inline_dentry(dir
))
1351 static inline int f2fs_readonly(struct super_block
*sb
)
1353 return sb
->s_flags
& MS_RDONLY
;
1356 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1358 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1361 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1363 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1364 sbi
->sb
->s_flags
|= MS_RDONLY
;
1367 #define get_inode_mode(i) \
1368 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1369 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1371 /* get offset of first page in next direct node */
1372 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1373 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1374 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1375 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1380 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1381 void truncate_data_blocks(struct dnode_of_data
*);
1382 int truncate_blocks(struct inode
*, u64
, bool);
1383 void f2fs_truncate(struct inode
*);
1384 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1385 int f2fs_setattr(struct dentry
*, struct iattr
*);
1386 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1387 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1388 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1389 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1394 void f2fs_set_inode_flags(struct inode
*);
1395 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1396 int try_to_free_nats(struct f2fs_sb_info
*, int);
1397 void update_inode(struct inode
*, struct page
*);
1398 void update_inode_page(struct inode
*);
1399 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1400 void f2fs_evict_inode(struct inode
*);
1401 void handle_failed_inode(struct inode
*);
1406 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1411 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1412 void set_de_type(struct f2fs_dir_entry
*, struct inode
*);
1413 struct f2fs_dir_entry
*find_target_dentry(struct qstr
*, int *,
1414 struct f2fs_dentry_ptr
*);
1415 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1417 void do_make_empty_dir(struct inode
*, struct inode
*,
1418 struct f2fs_dentry_ptr
*);
1419 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1420 const struct qstr
*, struct page
*);
1421 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1422 int room_for_filename(const void *, int, int);
1423 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1424 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1426 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1427 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1428 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1429 struct page
*, struct inode
*);
1430 int update_dent_inode(struct inode
*, const struct qstr
*);
1431 void f2fs_update_dentry(struct inode
*, struct f2fs_dentry_ptr
*,
1432 const struct qstr
*, f2fs_hash_t
, unsigned int);
1433 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*);
1434 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1436 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1437 int f2fs_make_empty(struct inode
*, struct inode
*);
1438 bool f2fs_empty_dir(struct inode
*);
1440 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1442 return __f2fs_add_link(dentry
->d_parent
->d_inode
, &dentry
->d_name
,
1449 int f2fs_sync_fs(struct super_block
*, int);
1450 extern __printf(3, 4)
1451 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1456 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1461 struct dnode_of_data
;
1464 bool available_free_memory(struct f2fs_sb_info
*, int);
1465 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1466 bool has_fsynced_inode(struct f2fs_sb_info
*, nid_t
);
1467 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1468 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1469 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1470 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1471 int truncate_xattr_node(struct inode
*, struct page
*);
1472 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1473 void remove_inode_page(struct inode
*);
1474 struct page
*new_inode_page(struct inode
*);
1475 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1476 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1477 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1478 struct page
*get_node_page_ra(struct page
*, int);
1479 void sync_inode_page(struct dnode_of_data
*);
1480 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1481 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1482 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1483 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1484 void recover_inline_xattr(struct inode
*, struct page
*);
1485 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1486 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1487 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1488 struct f2fs_summary_block
*);
1489 void flush_nat_entries(struct f2fs_sb_info
*);
1490 int build_node_manager(struct f2fs_sb_info
*);
1491 void destroy_node_manager(struct f2fs_sb_info
*);
1492 int __init
create_node_manager_caches(void);
1493 void destroy_node_manager_caches(void);
1498 void register_inmem_page(struct inode
*, struct page
*);
1499 void commit_inmem_pages(struct inode
*, bool);
1500 void f2fs_balance_fs(struct f2fs_sb_info
*);
1501 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1502 int f2fs_issue_flush(struct f2fs_sb_info
*);
1503 int create_flush_cmd_control(struct f2fs_sb_info
*);
1504 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1505 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1506 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1507 void clear_prefree_segments(struct f2fs_sb_info
*);
1508 void release_discard_addrs(struct f2fs_sb_info
*);
1509 void discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1510 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1511 void allocate_new_segments(struct f2fs_sb_info
*);
1512 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1513 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1514 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1515 void write_node_page(struct f2fs_sb_info
*, struct page
*,
1516 unsigned int, struct f2fs_io_info
*);
1517 void write_data_page(struct page
*, struct dnode_of_data
*,
1518 struct f2fs_io_info
*);
1519 void rewrite_data_page(struct page
*, struct f2fs_io_info
*);
1520 void recover_data_page(struct f2fs_sb_info
*, struct page
*,
1521 struct f2fs_summary
*, block_t
, block_t
);
1522 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1523 block_t
, block_t
*, struct f2fs_summary
*, int);
1524 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1525 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1526 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1527 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1528 int, unsigned int, int);
1529 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1530 int build_segment_manager(struct f2fs_sb_info
*);
1531 void destroy_segment_manager(struct f2fs_sb_info
*);
1532 int __init
create_segment_manager_caches(void);
1533 void destroy_segment_manager_caches(void);
1538 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1539 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1540 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1541 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1542 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1543 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1544 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1545 void release_dirty_inode(struct f2fs_sb_info
*);
1546 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1547 int acquire_orphan_inode(struct f2fs_sb_info
*);
1548 void release_orphan_inode(struct f2fs_sb_info
*);
1549 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1550 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1551 void recover_orphan_inodes(struct f2fs_sb_info
*);
1552 int get_valid_checkpoint(struct f2fs_sb_info
*);
1553 void update_dirty_page(struct inode
*, struct page
*);
1554 void add_dirty_dir_inode(struct inode
*);
1555 void remove_dirty_dir_inode(struct inode
*);
1556 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1557 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1558 void init_ino_entry_info(struct f2fs_sb_info
*);
1559 int __init
create_checkpoint_caches(void);
1560 void destroy_checkpoint_caches(void);
1565 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1566 int f2fs_submit_page_bio(struct f2fs_sb_info
*, struct page
*,
1567 struct f2fs_io_info
*);
1568 void f2fs_submit_page_mbio(struct f2fs_sb_info
*, struct page
*,
1569 struct f2fs_io_info
*);
1570 int reserve_new_block(struct dnode_of_data
*);
1571 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1572 void f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
1573 void f2fs_destroy_extent_tree(struct inode
*);
1574 void f2fs_update_extent_cache(struct dnode_of_data
*);
1575 struct page
*find_data_page(struct inode
*, pgoff_t
, bool);
1576 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1577 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1578 int do_write_data_page(struct page
*, struct f2fs_io_info
*);
1579 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1580 void init_extent_cache_info(struct f2fs_sb_info
*);
1581 int __init
create_extent_cache(void);
1582 void destroy_extent_cache(void);
1583 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1584 int f2fs_release_page(struct page
*, gfp_t
);
1589 int start_gc_thread(struct f2fs_sb_info
*);
1590 void stop_gc_thread(struct f2fs_sb_info
*);
1591 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1592 int f2fs_gc(struct f2fs_sb_info
*);
1593 void build_gc_manager(struct f2fs_sb_info
*);
1598 int recover_fsync_data(struct f2fs_sb_info
*);
1599 bool space_for_roll_forward(struct f2fs_sb_info
*);
1604 #ifdef CONFIG_F2FS_STAT_FS
1605 struct f2fs_stat_info
{
1606 struct list_head stat_list
;
1607 struct f2fs_sb_info
*sbi
;
1608 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1609 int main_area_segs
, main_area_sections
, main_area_zones
;
1610 int hit_ext
, total_ext
, ext_tree
, ext_node
;
1611 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1612 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1613 int total_count
, utilization
;
1614 int bg_gc
, inline_inode
, inline_dir
, inmem_pages
, wb_pages
;
1615 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1616 unsigned int bimodal
, avg_vblocks
;
1617 int util_free
, util_valid
, util_invalid
;
1618 int rsvd_segs
, overp_segs
;
1619 int dirty_count
, node_pages
, meta_pages
;
1620 int prefree_count
, call_count
, cp_count
;
1621 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1622 int tot_blks
, data_blks
, node_blks
;
1623 int curseg
[NR_CURSEG_TYPE
];
1624 int cursec
[NR_CURSEG_TYPE
];
1625 int curzone
[NR_CURSEG_TYPE
];
1627 unsigned int segment_count
[2];
1628 unsigned int block_count
[2];
1629 unsigned int inplace_count
;
1630 unsigned base_mem
, cache_mem
, page_mem
;
1633 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1635 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1638 #define stat_inc_cp_count(si) ((si)->cp_count++)
1639 #define stat_inc_call_count(si) ((si)->call_count++)
1640 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1641 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1642 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1643 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1644 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1645 #define stat_inc_inline_inode(inode) \
1647 if (f2fs_has_inline_data(inode)) \
1648 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1650 #define stat_dec_inline_inode(inode) \
1652 if (f2fs_has_inline_data(inode)) \
1653 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1655 #define stat_inc_inline_dir(inode) \
1657 if (f2fs_has_inline_dentry(inode)) \
1658 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1660 #define stat_dec_inline_dir(inode) \
1662 if (f2fs_has_inline_dentry(inode)) \
1663 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1665 #define stat_inc_seg_type(sbi, curseg) \
1666 ((sbi)->segment_count[(curseg)->alloc_type]++)
1667 #define stat_inc_block_count(sbi, curseg) \
1668 ((sbi)->block_count[(curseg)->alloc_type]++)
1669 #define stat_inc_inplace_blocks(sbi) \
1670 (atomic_inc(&(sbi)->inplace_count))
1671 #define stat_inc_seg_count(sbi, type) \
1673 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1675 if (type == SUM_TYPE_DATA) \
1681 #define stat_inc_tot_blk_count(si, blks) \
1682 (si->tot_blks += (blks))
1684 #define stat_inc_data_blk_count(sbi, blks) \
1686 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1687 stat_inc_tot_blk_count(si, blks); \
1688 si->data_blks += (blks); \
1691 #define stat_inc_node_blk_count(sbi, blks) \
1693 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1694 stat_inc_tot_blk_count(si, blks); \
1695 si->node_blks += (blks); \
1698 int f2fs_build_stats(struct f2fs_sb_info
*);
1699 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1700 void __init
f2fs_create_root_stats(void);
1701 void f2fs_destroy_root_stats(void);
1703 #define stat_inc_cp_count(si)
1704 #define stat_inc_call_count(si)
1705 #define stat_inc_bggc_count(si)
1706 #define stat_inc_dirty_dir(sbi)
1707 #define stat_dec_dirty_dir(sbi)
1708 #define stat_inc_total_hit(sb)
1709 #define stat_inc_read_hit(sb)
1710 #define stat_inc_inline_inode(inode)
1711 #define stat_dec_inline_inode(inode)
1712 #define stat_inc_inline_dir(inode)
1713 #define stat_dec_inline_dir(inode)
1714 #define stat_inc_seg_type(sbi, curseg)
1715 #define stat_inc_block_count(sbi, curseg)
1716 #define stat_inc_inplace_blocks(sbi)
1717 #define stat_inc_seg_count(si, type)
1718 #define stat_inc_tot_blk_count(si, blks)
1719 #define stat_inc_data_blk_count(si, blks)
1720 #define stat_inc_node_blk_count(sbi, blks)
1722 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1723 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1724 static inline void __init
f2fs_create_root_stats(void) { }
1725 static inline void f2fs_destroy_root_stats(void) { }
1728 extern const struct file_operations f2fs_dir_operations
;
1729 extern const struct file_operations f2fs_file_operations
;
1730 extern const struct inode_operations f2fs_file_inode_operations
;
1731 extern const struct address_space_operations f2fs_dblock_aops
;
1732 extern const struct address_space_operations f2fs_node_aops
;
1733 extern const struct address_space_operations f2fs_meta_aops
;
1734 extern const struct inode_operations f2fs_dir_inode_operations
;
1735 extern const struct inode_operations f2fs_symlink_inode_operations
;
1736 extern const struct inode_operations f2fs_special_inode_operations
;
1737 extern struct kmem_cache
*inode_entry_slab
;
1742 bool f2fs_may_inline(struct inode
*);
1743 void read_inline_data(struct page
*, struct page
*);
1744 int f2fs_read_inline_data(struct inode
*, struct page
*);
1745 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
1746 int f2fs_convert_inline_inode(struct inode
*);
1747 int f2fs_write_inline_data(struct inode
*, struct page
*);
1748 bool recover_inline_data(struct inode
*, struct page
*);
1749 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*, struct qstr
*,
1751 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
1752 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
1753 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*);
1754 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
1755 struct inode
*, struct inode
*);
1756 bool f2fs_empty_inline_dir(struct inode
*);
1757 int f2fs_read_inline_dir(struct file
*, struct dir_context
*);