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>
22 #include <linux/vmalloc.h>
23 #include <linux/bio.h>
24 #include <linux/blkdev.h>
25 #include <linux/fscrypto.h>
26 #include <crypto/hash.h>
28 #ifdef CONFIG_F2FS_CHECK_FS
29 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
31 #define f2fs_bug_on(sbi, condition) \
33 if (unlikely(condition)) { \
35 set_sbi_flag(sbi, SBI_NEED_FSCK); \
40 #ifdef CONFIG_F2FS_FAULT_INJECTION
52 struct f2fs_fault_info
{
54 unsigned int inject_rate
;
55 unsigned int inject_type
;
58 extern struct f2fs_fault_info f2fs_fault
;
59 extern char *fault_name
[FAULT_MAX
];
60 #define IS_FAULT_SET(type) (f2fs_fault.inject_type & (1 << (type)))
62 static inline bool time_to_inject(int type
)
64 if (!f2fs_fault
.inject_rate
)
66 if (type
== FAULT_KMALLOC
&& !IS_FAULT_SET(type
))
68 else if (type
== FAULT_PAGE_ALLOC
&& !IS_FAULT_SET(type
))
70 else if (type
== FAULT_ALLOC_NID
&& !IS_FAULT_SET(type
))
72 else if (type
== FAULT_ORPHAN
&& !IS_FAULT_SET(type
))
74 else if (type
== FAULT_BLOCK
&& !IS_FAULT_SET(type
))
76 else if (type
== FAULT_DIR_DEPTH
&& !IS_FAULT_SET(type
))
78 else if (type
== FAULT_EVICT_INODE
&& !IS_FAULT_SET(type
))
81 atomic_inc(&f2fs_fault
.inject_ops
);
82 if (atomic_read(&f2fs_fault
.inject_ops
) >= f2fs_fault
.inject_rate
) {
83 atomic_set(&f2fs_fault
.inject_ops
, 0);
84 printk("%sF2FS-fs : inject %s in %pF\n",
87 __builtin_return_address(0));
97 #define F2FS_MOUNT_BG_GC 0x00000001
98 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
99 #define F2FS_MOUNT_DISCARD 0x00000004
100 #define F2FS_MOUNT_NOHEAP 0x00000008
101 #define F2FS_MOUNT_XATTR_USER 0x00000010
102 #define F2FS_MOUNT_POSIX_ACL 0x00000020
103 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
104 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
105 #define F2FS_MOUNT_INLINE_DATA 0x00000100
106 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
107 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
108 #define F2FS_MOUNT_NOBARRIER 0x00000800
109 #define F2FS_MOUNT_FASTBOOT 0x00001000
110 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
111 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
112 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
113 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
115 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
116 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
117 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
119 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
120 typecheck(unsigned long long, b) && \
121 ((long long)((a) - (b)) > 0))
123 typedef u32 block_t
; /*
124 * should not change u32, since it is the on-disk block
125 * address format, __le32.
129 struct f2fs_mount_info
{
133 #define F2FS_FEATURE_ENCRYPT 0x0001
135 #define F2FS_HAS_FEATURE(sb, mask) \
136 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
137 #define F2FS_SET_FEATURE(sb, mask) \
138 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
139 #define F2FS_CLEAR_FEATURE(sb, mask) \
140 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
143 * For checkpoint manager
158 #define DEF_BATCHED_TRIM_SECTIONS 32
159 #define BATCHED_TRIM_SEGMENTS(sbi) \
160 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
161 #define BATCHED_TRIM_BLOCKS(sbi) \
162 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
163 #define DEF_CP_INTERVAL 60 /* 60 secs */
164 #define DEF_IDLE_INTERVAL 120 /* 2 mins */
175 * For CP/NAT/SIT/SSA readahead
185 /* for the list of ino */
187 ORPHAN_INO
, /* for orphan ino list */
188 APPEND_INO
, /* for append ino list */
189 UPDATE_INO
, /* for update ino list */
190 MAX_INO_ENTRY
, /* max. list */
194 struct list_head list
; /* list head */
195 nid_t ino
; /* inode number */
198 /* for the list of inodes to be GCed */
200 struct list_head list
; /* list head */
201 struct inode
*inode
; /* vfs inode pointer */
204 /* for the list of blockaddresses to be discarded */
205 struct discard_entry
{
206 struct list_head list
; /* list head */
207 block_t blkaddr
; /* block address to be discarded */
208 int len
; /* # of consecutive blocks of the discard */
211 /* for the list of fsync inodes, used only during recovery */
212 struct fsync_inode_entry
{
213 struct list_head list
; /* list head */
214 struct inode
*inode
; /* vfs inode pointer */
215 block_t blkaddr
; /* block address locating the last fsync */
216 block_t last_dentry
; /* block address locating the last dentry */
219 #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
220 #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
222 #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
223 #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
224 #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
225 #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
227 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
228 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
230 static inline int update_nats_in_cursum(struct f2fs_journal
*journal
, int i
)
232 int before
= nats_in_cursum(journal
);
233 journal
->n_nats
= cpu_to_le16(before
+ i
);
237 static inline int update_sits_in_cursum(struct f2fs_journal
*journal
, int i
)
239 int before
= sits_in_cursum(journal
);
240 journal
->n_sits
= cpu_to_le16(before
+ i
);
244 static inline bool __has_cursum_space(struct f2fs_journal
*journal
,
247 if (type
== NAT_JOURNAL
)
248 return size
<= MAX_NAT_JENTRIES(journal
);
249 return size
<= MAX_SIT_JENTRIES(journal
);
255 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
256 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
257 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
259 #define F2FS_IOCTL_MAGIC 0xf5
260 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
261 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
262 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
263 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
264 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
265 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
266 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
267 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
269 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
270 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
271 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
274 * should be same as XFS_IOC_GOINGDOWN.
275 * Flags for going down operation used by FS_IOC_GOINGDOWN
277 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
278 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
279 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
280 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
281 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
283 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
285 * ioctl commands in 32 bit emulation
287 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
288 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
289 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
292 struct f2fs_defragment
{
298 * For INODE and NODE manager
300 /* for directory operations */
301 struct f2fs_dentry_ptr
{
304 struct f2fs_dir_entry
*dentry
;
305 __u8 (*filename
)[F2FS_SLOT_LEN
];
309 static inline void make_dentry_ptr(struct inode
*inode
,
310 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
315 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
316 d
->max
= NR_DENTRY_IN_BLOCK
;
317 d
->bitmap
= &t
->dentry_bitmap
;
318 d
->dentry
= t
->dentry
;
319 d
->filename
= t
->filename
;
321 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
322 d
->max
= NR_INLINE_DENTRY
;
323 d
->bitmap
= &t
->dentry_bitmap
;
324 d
->dentry
= t
->dentry
;
325 d
->filename
= t
->filename
;
330 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
331 * as its node offset to distinguish from index node blocks.
332 * But some bits are used to mark the node block.
334 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
337 ALLOC_NODE
, /* allocate a new node page if needed */
338 LOOKUP_NODE
, /* look up a node without readahead */
340 * look up a node with readahead called
345 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
347 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
349 /* vector size for gang look-up from extent cache that consists of radix tree */
350 #define EXT_TREE_VEC_SIZE 64
352 /* for in-memory extent cache entry */
353 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
355 /* number of extent info in extent cache we try to shrink */
356 #define EXTENT_CACHE_SHRINK_NUMBER 128
359 unsigned int fofs
; /* start offset in a file */
360 u32 blk
; /* start block address of the extent */
361 unsigned int len
; /* length of the extent */
365 struct rb_node rb_node
; /* rb node located in rb-tree */
366 struct list_head list
; /* node in global extent list of sbi */
367 struct extent_info ei
; /* extent info */
368 struct extent_tree
*et
; /* extent tree pointer */
372 nid_t ino
; /* inode number */
373 struct rb_root root
; /* root of extent info rb-tree */
374 struct extent_node
*cached_en
; /* recently accessed extent node */
375 struct extent_info largest
; /* largested extent info */
376 struct list_head list
; /* to be used by sbi->zombie_list */
377 rwlock_t lock
; /* protect extent info rb-tree */
378 atomic_t node_cnt
; /* # of extent node in rb-tree*/
382 * This structure is taken from ext4_map_blocks.
384 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
386 #define F2FS_MAP_NEW (1 << BH_New)
387 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
388 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
389 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
392 struct f2fs_map_blocks
{
396 unsigned int m_flags
;
397 pgoff_t
*m_next_pgofs
; /* point next possible non-hole pgofs */
400 /* for flag in get_data_block */
401 #define F2FS_GET_BLOCK_READ 0
402 #define F2FS_GET_BLOCK_DIO 1
403 #define F2FS_GET_BLOCK_FIEMAP 2
404 #define F2FS_GET_BLOCK_BMAP 3
405 #define F2FS_GET_BLOCK_PRE_DIO 4
406 #define F2FS_GET_BLOCK_PRE_AIO 5
409 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
411 #define FADVISE_COLD_BIT 0x01
412 #define FADVISE_LOST_PINO_BIT 0x02
413 #define FADVISE_ENCRYPT_BIT 0x04
414 #define FADVISE_ENC_NAME_BIT 0x08
416 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
417 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
418 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
419 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
420 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
421 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
422 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
423 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
424 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
425 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
426 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
428 #define DEF_DIR_LEVEL 0
430 struct f2fs_inode_info
{
431 struct inode vfs_inode
; /* serve a vfs inode */
432 unsigned long i_flags
; /* keep an inode flags for ioctl */
433 unsigned char i_advise
; /* use to give file attribute hints */
434 unsigned char i_dir_level
; /* use for dentry level for large dir */
435 unsigned int i_current_depth
; /* use only in directory structure */
436 unsigned int i_pino
; /* parent inode number */
437 umode_t i_acl_mode
; /* keep file acl mode temporarily */
439 /* Use below internally in f2fs*/
440 unsigned long flags
; /* use to pass per-file flags */
441 struct rw_semaphore i_sem
; /* protect fi info */
442 struct percpu_counter dirty_pages
; /* # of dirty pages */
443 f2fs_hash_t chash
; /* hash value of given file name */
444 unsigned int clevel
; /* maximum level of given file name */
445 nid_t i_xattr_nid
; /* node id that contains xattrs */
446 unsigned long long xattr_ver
; /* cp version of xattr modification */
447 loff_t last_disk_size
; /* lastly written file size */
449 struct list_head dirty_list
; /* dirty list for dirs and files */
450 struct list_head gdirty_list
; /* linked in global dirty list */
451 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
452 struct mutex inmem_lock
; /* lock for inmemory pages */
453 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
456 static inline void get_extent_info(struct extent_info
*ext
,
457 struct f2fs_extent
*i_ext
)
459 ext
->fofs
= le32_to_cpu(i_ext
->fofs
);
460 ext
->blk
= le32_to_cpu(i_ext
->blk
);
461 ext
->len
= le32_to_cpu(i_ext
->len
);
464 static inline void set_raw_extent(struct extent_info
*ext
,
465 struct f2fs_extent
*i_ext
)
467 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
468 i_ext
->blk
= cpu_to_le32(ext
->blk
);
469 i_ext
->len
= cpu_to_le32(ext
->len
);
472 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
473 u32 blk
, unsigned int len
)
480 static inline bool __is_extent_same(struct extent_info
*ei1
,
481 struct extent_info
*ei2
)
483 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
484 ei1
->len
== ei2
->len
);
487 static inline bool __is_extent_mergeable(struct extent_info
*back
,
488 struct extent_info
*front
)
490 return (back
->fofs
+ back
->len
== front
->fofs
&&
491 back
->blk
+ back
->len
== front
->blk
);
494 static inline bool __is_back_mergeable(struct extent_info
*cur
,
495 struct extent_info
*back
)
497 return __is_extent_mergeable(back
, cur
);
500 static inline bool __is_front_mergeable(struct extent_info
*cur
,
501 struct extent_info
*front
)
503 return __is_extent_mergeable(cur
, front
);
506 static inline void __try_update_largest_extent(struct inode
*inode
,
507 struct extent_tree
*et
, struct extent_node
*en
)
509 if (en
->ei
.len
> et
->largest
.len
) {
510 et
->largest
= en
->ei
;
511 mark_inode_dirty_sync(inode
);
515 struct f2fs_nm_info
{
516 block_t nat_blkaddr
; /* base disk address of NAT */
517 nid_t max_nid
; /* maximum possible node ids */
518 nid_t available_nids
; /* maximum available node ids */
519 nid_t next_scan_nid
; /* the next nid to be scanned */
520 unsigned int ram_thresh
; /* control the memory footprint */
521 unsigned int ra_nid_pages
; /* # of nid pages to be readaheaded */
522 unsigned int dirty_nats_ratio
; /* control dirty nats ratio threshold */
524 /* NAT cache management */
525 struct radix_tree_root nat_root
;/* root of the nat entry cache */
526 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
527 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
528 struct list_head nat_entries
; /* cached nat entry list (clean) */
529 unsigned int nat_cnt
; /* the # of cached nat entries */
530 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
532 /* free node ids management */
533 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
534 struct list_head free_nid_list
; /* a list for free nids */
535 spinlock_t free_nid_list_lock
; /* protect free nid list */
536 unsigned int fcnt
; /* the number of free node id */
537 struct mutex build_lock
; /* lock for build free nids */
540 char *nat_bitmap
; /* NAT bitmap pointer */
541 int bitmap_size
; /* bitmap size */
545 * this structure is used as one of function parameters.
546 * all the information are dedicated to a given direct node block determined
547 * by the data offset in a file.
549 struct dnode_of_data
{
550 struct inode
*inode
; /* vfs inode pointer */
551 struct page
*inode_page
; /* its inode page, NULL is possible */
552 struct page
*node_page
; /* cached direct node page */
553 nid_t nid
; /* node id of the direct node block */
554 unsigned int ofs_in_node
; /* data offset in the node page */
555 bool inode_page_locked
; /* inode page is locked or not */
556 bool node_changed
; /* is node block changed */
557 char cur_level
; /* level of hole node page */
558 char max_level
; /* level of current page located */
559 block_t data_blkaddr
; /* block address of the node block */
562 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
563 struct page
*ipage
, struct page
*npage
, nid_t nid
)
565 memset(dn
, 0, sizeof(*dn
));
567 dn
->inode_page
= ipage
;
568 dn
->node_page
= npage
;
575 * By default, there are 6 active log areas across the whole main area.
576 * When considering hot and cold data separation to reduce cleaning overhead,
577 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
579 * In the current design, you should not change the numbers intentionally.
580 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
581 * logs individually according to the underlying devices. (default: 6)
582 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
583 * data and 8 for node logs.
585 #define NR_CURSEG_DATA_TYPE (3)
586 #define NR_CURSEG_NODE_TYPE (3)
587 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
590 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
591 CURSEG_WARM_DATA
, /* data blocks */
592 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
593 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
594 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
595 CURSEG_COLD_NODE
, /* indirect node blocks */
597 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
601 struct completion wait
;
602 struct llist_node llnode
;
606 struct flush_cmd_control
{
607 struct task_struct
*f2fs_issue_flush
; /* flush thread */
608 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
609 atomic_t submit_flush
; /* # of issued flushes */
610 struct llist_head issue_list
; /* list for command issue */
611 struct llist_node
*dispatch_list
; /* list for command dispatch */
614 struct f2fs_sm_info
{
615 struct sit_info
*sit_info
; /* whole segment information */
616 struct free_segmap_info
*free_info
; /* free segment information */
617 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
618 struct curseg_info
*curseg_array
; /* active segment information */
620 block_t seg0_blkaddr
; /* block address of 0'th segment */
621 block_t main_blkaddr
; /* start block address of main area */
622 block_t ssa_blkaddr
; /* start block address of SSA area */
624 unsigned int segment_count
; /* total # of segments */
625 unsigned int main_segments
; /* # of segments in main area */
626 unsigned int reserved_segments
; /* # of reserved segments */
627 unsigned int ovp_segments
; /* # of overprovision segments */
629 /* a threshold to reclaim prefree segments */
630 unsigned int rec_prefree_segments
;
632 /* for small discard management */
633 struct list_head discard_list
; /* 4KB discard list */
634 int nr_discards
; /* # of discards in the list */
635 int max_discards
; /* max. discards to be issued */
637 /* for batched trimming */
638 unsigned int trim_sections
; /* # of sections to trim */
640 struct list_head sit_entry_set
; /* sit entry set list */
642 unsigned int ipu_policy
; /* in-place-update policy */
643 unsigned int min_ipu_util
; /* in-place-update threshold */
644 unsigned int min_fsync_blocks
; /* threshold for fsync */
646 /* for flush command control */
647 struct flush_cmd_control
*cmd_control_info
;
655 * COUNT_TYPE for monitoring
657 * f2fs monitors the number of several block types such as on-writeback,
658 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
671 * The below are the page types of bios used in submit_bio().
672 * The available types are:
673 * DATA User data pages. It operates as async mode.
674 * NODE Node pages. It operates as async mode.
675 * META FS metadata pages such as SIT, NAT, CP.
676 * NR_PAGE_TYPE The number of page types.
677 * META_FLUSH Make sure the previous pages are written
678 * with waiting the bio's completion
679 * ... Only can be used with META.
681 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
688 INMEM
, /* the below types are used by tracepoints only. */
695 struct f2fs_io_info
{
696 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
697 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
698 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
699 block_t new_blkaddr
; /* new block address to be written */
700 block_t old_blkaddr
; /* old block address before Cow */
701 struct page
*page
; /* page to be written */
702 struct page
*encrypted_page
; /* encrypted page */
705 #define is_read_io(rw) (((rw) & 1) == READ)
706 struct f2fs_bio_info
{
707 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
708 struct bio
*bio
; /* bios to merge */
709 sector_t last_block_in_bio
; /* last block number */
710 struct f2fs_io_info fio
; /* store buffered io info. */
711 struct rw_semaphore io_rwsem
; /* blocking op for bio */
715 DIR_INODE
, /* for dirty dir inode */
716 FILE_INODE
, /* for dirty regular/symlink inode */
717 DIRTY_META
, /* for all dirtied inode metadata */
721 /* for inner inode cache management */
722 struct inode_management
{
723 struct radix_tree_root ino_root
; /* ino entry array */
724 spinlock_t ino_lock
; /* for ino entry lock */
725 struct list_head ino_list
; /* inode list head */
726 unsigned long ino_num
; /* number of entries */
729 /* For s_flag in struct f2fs_sb_info */
731 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
732 SBI_IS_CLOSE
, /* specify unmounting */
733 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
734 SBI_POR_DOING
, /* recovery is doing or not */
735 SBI_NEED_SB_WRITE
, /* need to recover superblock */
744 #ifdef CONFIG_F2FS_FS_ENCRYPTION
745 #define F2FS_KEY_DESC_PREFIX "f2fs:"
746 #define F2FS_KEY_DESC_PREFIX_SIZE 5
748 struct f2fs_sb_info
{
749 struct super_block
*sb
; /* pointer to VFS super block */
750 struct proc_dir_entry
*s_proc
; /* proc entry */
751 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
752 int valid_super_block
; /* valid super block no */
753 int s_flag
; /* flags for sbi */
755 #ifdef CONFIG_F2FS_FS_ENCRYPTION
756 u8 key_prefix
[F2FS_KEY_DESC_PREFIX_SIZE
];
759 /* for node-related operations */
760 struct f2fs_nm_info
*nm_info
; /* node manager */
761 struct inode
*node_inode
; /* cache node blocks */
763 /* for segment-related operations */
764 struct f2fs_sm_info
*sm_info
; /* segment manager */
766 /* for bio operations */
767 struct f2fs_bio_info read_io
; /* for read bios */
768 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
771 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
772 struct inode
*meta_inode
; /* cache meta blocks */
773 struct mutex cp_mutex
; /* checkpoint procedure lock */
774 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
775 struct rw_semaphore node_write
; /* locking node writes */
776 wait_queue_head_t cp_wait
;
777 unsigned long last_time
[MAX_TIME
]; /* to store time in jiffies */
778 long interval_time
[MAX_TIME
]; /* to store thresholds */
780 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
782 /* for orphan inode, use 0'th array */
783 unsigned int max_orphans
; /* max orphan inodes */
785 /* for inode management */
786 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
787 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
789 /* for extent tree cache */
790 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
791 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
792 struct list_head extent_list
; /* lru list for shrinker */
793 spinlock_t extent_lock
; /* locking extent lru list */
794 atomic_t total_ext_tree
; /* extent tree count */
795 struct list_head zombie_list
; /* extent zombie tree list */
796 atomic_t total_zombie_tree
; /* extent zombie tree count */
797 atomic_t total_ext_node
; /* extent info count */
799 /* basic filesystem units */
800 unsigned int log_sectors_per_block
; /* log2 sectors per block */
801 unsigned int log_blocksize
; /* log2 block size */
802 unsigned int blocksize
; /* block size */
803 unsigned int root_ino_num
; /* root inode number*/
804 unsigned int node_ino_num
; /* node inode number*/
805 unsigned int meta_ino_num
; /* meta inode number*/
806 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
807 unsigned int blocks_per_seg
; /* blocks per segment */
808 unsigned int segs_per_sec
; /* segments per section */
809 unsigned int secs_per_zone
; /* sections per zone */
810 unsigned int total_sections
; /* total section count */
811 unsigned int total_node_count
; /* total node block count */
812 unsigned int total_valid_node_count
; /* valid node block count */
813 loff_t max_file_blocks
; /* max block index of file */
814 int active_logs
; /* # of active logs */
815 int dir_level
; /* directory level */
817 block_t user_block_count
; /* # of user blocks */
818 block_t total_valid_block_count
; /* # of valid blocks */
819 block_t discard_blks
; /* discard command candidats */
820 block_t last_valid_block_count
; /* for recovery */
821 u32 s_next_generation
; /* for NFS support */
822 atomic_t nr_wb_bios
; /* # of writeback bios */
824 /* # of pages, see count_type */
825 struct percpu_counter nr_pages
[NR_COUNT_TYPE
];
826 /* # of allocated blocks */
827 struct percpu_counter alloc_valid_block_count
;
829 /* valid inode count */
830 struct percpu_counter total_valid_inode_count
;
832 struct f2fs_mount_info mount_opt
; /* mount options */
834 /* for cleaning operations */
835 struct mutex gc_mutex
; /* mutex for GC */
836 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
837 unsigned int cur_victim_sec
; /* current victim section num */
839 /* maximum # of trials to find a victim segment for SSR and GC */
840 unsigned int max_victim_search
;
843 * for stat information.
844 * one is for the LFS mode, and the other is for the SSR mode.
846 #ifdef CONFIG_F2FS_STAT_FS
847 struct f2fs_stat_info
*stat_info
; /* FS status information */
848 unsigned int segment_count
[2]; /* # of allocated segments */
849 unsigned int block_count
[2]; /* # of allocated blocks */
850 atomic_t inplace_count
; /* # of inplace update */
851 atomic64_t total_hit_ext
; /* # of lookup extent cache */
852 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
853 atomic64_t read_hit_largest
; /* # of hit largest extent node */
854 atomic64_t read_hit_cached
; /* # of hit cached extent node */
855 atomic_t inline_xattr
; /* # of inline_xattr inodes */
856 atomic_t inline_inode
; /* # of inline_data inodes */
857 atomic_t inline_dir
; /* # of inline_dentry inodes */
858 int bg_gc
; /* background gc calls */
859 unsigned int ndirty_inode
[NR_INODE_TYPE
]; /* # of dirty inodes */
861 unsigned int last_victim
[2]; /* last victim segment # */
862 spinlock_t stat_lock
; /* lock for stat operations */
864 /* For sysfs suppport */
865 struct kobject s_kobj
;
866 struct completion s_kobj_unregister
;
868 /* For shrinker support */
869 struct list_head s_list
;
870 struct mutex umount_mutex
;
871 unsigned int shrinker_run_no
;
873 /* For write statistics */
874 u64 sectors_written_start
;
877 /* Reference to checksum algorithm driver via cryptoapi */
878 struct crypto_shash
*s_chksum_driver
;
881 /* For write statistics. Suppose sector size is 512 bytes,
882 * and the return value is in kbytes. s is of struct f2fs_sb_info.
884 #define BD_PART_WRITTEN(s) \
885 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
886 s->sectors_written_start) >> 1)
888 static inline void f2fs_update_time(struct f2fs_sb_info
*sbi
, int type
)
890 sbi
->last_time
[type
] = jiffies
;
893 static inline bool f2fs_time_over(struct f2fs_sb_info
*sbi
, int type
)
895 struct timespec ts
= {sbi
->interval_time
[type
], 0};
896 unsigned long interval
= timespec_to_jiffies(&ts
);
898 return time_after(jiffies
, sbi
->last_time
[type
] + interval
);
901 static inline bool is_idle(struct f2fs_sb_info
*sbi
)
903 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
904 struct request_queue
*q
= bdev_get_queue(bdev
);
905 struct request_list
*rl
= &q
->root_rl
;
907 if (rl
->count
[BLK_RW_SYNC
] || rl
->count
[BLK_RW_ASYNC
])
910 return f2fs_time_over(sbi
, REQ_TIME
);
916 static inline u32
f2fs_crc32(struct f2fs_sb_info
*sbi
, const void *address
,
919 SHASH_DESC_ON_STACK(shash
, sbi
->s_chksum_driver
);
920 u32
*ctx
= (u32
*)shash_desc_ctx(shash
);
923 shash
->tfm
= sbi
->s_chksum_driver
;
925 *ctx
= F2FS_SUPER_MAGIC
;
927 err
= crypto_shash_update(shash
, address
, length
);
933 static inline bool f2fs_crc_valid(struct f2fs_sb_info
*sbi
, __u32 blk_crc
,
934 void *buf
, size_t buf_size
)
936 return f2fs_crc32(sbi
, buf
, buf_size
) == blk_crc
;
939 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
941 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
944 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
946 return sb
->s_fs_info
;
949 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
951 return F2FS_SB(inode
->i_sb
);
954 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
956 return F2FS_I_SB(mapping
->host
);
959 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
961 return F2FS_M_SB(page
->mapping
);
964 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
966 return (struct f2fs_super_block
*)(sbi
->raw_super
);
969 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
971 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
974 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
976 return (struct f2fs_node
*)page_address(page
);
979 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
981 return &((struct f2fs_node
*)page_address(page
))->i
;
984 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
986 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
989 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
991 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
994 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
996 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
999 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
1001 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
1004 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
1006 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
1009 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
1011 return sbi
->meta_inode
->i_mapping
;
1014 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
1016 return sbi
->node_inode
->i_mapping
;
1019 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
1021 return sbi
->s_flag
& (0x01 << type
);
1024 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
1026 sbi
->s_flag
|= (0x01 << type
);
1029 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
1031 sbi
->s_flag
&= ~(0x01 << type
);
1034 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
1036 return le64_to_cpu(cp
->checkpoint_ver
);
1039 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1041 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1042 return ckpt_flags
& f
;
1045 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1047 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1049 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1052 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1054 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1056 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1059 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
1061 down_read(&sbi
->cp_rwsem
);
1064 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
1066 up_read(&sbi
->cp_rwsem
);
1069 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
1071 down_write(&sbi
->cp_rwsem
);
1074 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
1076 up_write(&sbi
->cp_rwsem
);
1079 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
1081 int reason
= CP_SYNC
;
1083 if (test_opt(sbi
, FASTBOOT
))
1084 reason
= CP_FASTBOOT
;
1085 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
1090 static inline bool __remain_node_summaries(int reason
)
1092 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
1095 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
1097 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
1098 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1102 * Check whether the given nid is within node id range.
1104 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1106 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1108 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1113 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1116 * Check whether the inode has blocks or not
1118 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1120 if (F2FS_I(inode
)->i_xattr_nid
)
1121 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1123 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1126 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1128 return ofs
== XATTR_NODE_OFFSET
;
1131 static inline void f2fs_i_blocks_write(struct inode
*, blkcnt_t
, bool);
1132 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1133 struct inode
*inode
, blkcnt_t
*count
)
1135 block_t valid_block_count
;
1137 spin_lock(&sbi
->stat_lock
);
1138 #ifdef CONFIG_F2FS_FAULT_INJECTION
1139 if (time_to_inject(FAULT_BLOCK
)) {
1140 spin_unlock(&sbi
->stat_lock
);
1145 sbi
->total_valid_block_count
+ (block_t
)(*count
);
1146 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1147 *count
= sbi
->user_block_count
- sbi
->total_valid_block_count
;
1149 spin_unlock(&sbi
->stat_lock
);
1153 /* *count can be recalculated */
1154 f2fs_i_blocks_write(inode
, *count
, true);
1155 sbi
->total_valid_block_count
=
1156 sbi
->total_valid_block_count
+ (block_t
)(*count
);
1157 spin_unlock(&sbi
->stat_lock
);
1159 percpu_counter_add(&sbi
->alloc_valid_block_count
, (*count
));
1163 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1164 struct inode
*inode
,
1167 spin_lock(&sbi
->stat_lock
);
1168 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1169 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1170 f2fs_i_blocks_write(inode
, count
, false);
1171 sbi
->total_valid_block_count
-= (block_t
)count
;
1172 spin_unlock(&sbi
->stat_lock
);
1175 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1177 percpu_counter_inc(&sbi
->nr_pages
[count_type
]);
1178 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1181 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1183 percpu_counter_inc(&F2FS_I(inode
)->dirty_pages
);
1184 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1185 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1188 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1190 percpu_counter_dec(&sbi
->nr_pages
[count_type
]);
1193 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1195 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1196 !S_ISLNK(inode
->i_mode
))
1199 percpu_counter_dec(&F2FS_I(inode
)->dirty_pages
);
1200 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1201 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1204 static inline s64
get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1206 return percpu_counter_sum_positive(&sbi
->nr_pages
[count_type
]);
1209 static inline s64
get_dirty_pages(struct inode
*inode
)
1211 return percpu_counter_sum_positive(&F2FS_I(inode
)->dirty_pages
);
1214 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1216 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1217 unsigned int segs
= (get_pages(sbi
, block_type
) + pages_per_sec
- 1) >>
1218 sbi
->log_blocks_per_seg
;
1220 return segs
/ sbi
->segs_per_sec
;
1223 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1225 return sbi
->total_valid_block_count
;
1228 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1230 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1232 /* return NAT or SIT bitmap */
1233 if (flag
== NAT_BITMAP
)
1234 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1235 else if (flag
== SIT_BITMAP
)
1236 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1241 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1243 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1246 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1248 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1251 if (__cp_payload(sbi
) > 0) {
1252 if (flag
== NAT_BITMAP
)
1253 return &ckpt
->sit_nat_version_bitmap
;
1255 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1257 offset
= (flag
== NAT_BITMAP
) ?
1258 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1259 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1263 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1266 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1267 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1269 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1272 * odd numbered checkpoint should at cp segment 0
1273 * and even segment must be at cp segment 1
1275 if (!(ckpt_version
& 1))
1276 start_addr
+= sbi
->blocks_per_seg
;
1281 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1283 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1286 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1287 struct inode
*inode
)
1289 block_t valid_block_count
;
1290 unsigned int valid_node_count
;
1292 spin_lock(&sbi
->stat_lock
);
1294 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1295 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1296 spin_unlock(&sbi
->stat_lock
);
1300 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1301 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1302 spin_unlock(&sbi
->stat_lock
);
1307 f2fs_i_blocks_write(inode
, 1, true);
1309 sbi
->total_valid_node_count
++;
1310 sbi
->total_valid_block_count
++;
1311 spin_unlock(&sbi
->stat_lock
);
1313 percpu_counter_inc(&sbi
->alloc_valid_block_count
);
1317 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1318 struct inode
*inode
)
1320 spin_lock(&sbi
->stat_lock
);
1322 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1323 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1324 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1326 f2fs_i_blocks_write(inode
, 1, false);
1327 sbi
->total_valid_node_count
--;
1328 sbi
->total_valid_block_count
--;
1330 spin_unlock(&sbi
->stat_lock
);
1333 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1335 return sbi
->total_valid_node_count
;
1338 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1340 percpu_counter_inc(&sbi
->total_valid_inode_count
);
1343 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1345 percpu_counter_dec(&sbi
->total_valid_inode_count
);
1348 static inline s64
valid_inode_count(struct f2fs_sb_info
*sbi
)
1350 return percpu_counter_sum_positive(&sbi
->total_valid_inode_count
);
1353 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1354 pgoff_t index
, bool for_write
)
1356 #ifdef CONFIG_F2FS_FAULT_INJECTION
1357 struct page
*page
= find_lock_page(mapping
, index
);
1361 if (time_to_inject(FAULT_PAGE_ALLOC
))
1365 return grab_cache_page(mapping
, index
);
1366 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1369 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1371 char *src_kaddr
= kmap(src
);
1372 char *dst_kaddr
= kmap(dst
);
1374 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1379 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1385 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1391 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1394 f2fs_put_page(dn
->node_page
, 1);
1395 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1396 f2fs_put_page(dn
->inode_page
, 0);
1397 dn
->node_page
= NULL
;
1398 dn
->inode_page
= NULL
;
1401 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1404 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1407 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1412 entry
= kmem_cache_alloc(cachep
, flags
);
1414 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1418 static inline struct bio
*f2fs_bio_alloc(int npages
)
1422 /* No failure on bio allocation */
1423 bio
= bio_alloc(GFP_NOIO
, npages
);
1425 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1429 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1430 unsigned long index
, void *item
)
1432 while (radix_tree_insert(root
, index
, item
))
1436 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1438 static inline bool IS_INODE(struct page
*page
)
1440 struct f2fs_node
*p
= F2FS_NODE(page
);
1441 return RAW_IS_INODE(p
);
1444 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1446 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1449 static inline block_t
datablock_addr(struct page
*node_page
,
1450 unsigned int offset
)
1452 struct f2fs_node
*raw_node
;
1454 raw_node
= F2FS_NODE(node_page
);
1455 addr_array
= blkaddr_in_node(raw_node
);
1456 return le32_to_cpu(addr_array
[offset
]);
1459 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1464 mask
= 1 << (7 - (nr
& 0x07));
1465 return mask
& *addr
;
1468 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1473 mask
= 1 << (7 - (nr
& 0x07));
1477 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1482 mask
= 1 << (7 - (nr
& 0x07));
1486 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1492 mask
= 1 << (7 - (nr
& 0x07));
1498 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1504 mask
= 1 << (7 - (nr
& 0x07));
1510 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1515 mask
= 1 << (7 - (nr
& 0x07));
1519 /* used for f2fs_inode_info->flags */
1521 FI_NEW_INODE
, /* indicate newly allocated inode */
1522 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1523 FI_AUTO_RECOVER
, /* indicate inode is recoverable */
1524 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1525 FI_INC_LINK
, /* need to increment i_nlink */
1526 FI_ACL_MODE
, /* indicate acl mode */
1527 FI_NO_ALLOC
, /* should not allocate any blocks */
1528 FI_FREE_NID
, /* free allocated nide */
1529 FI_NO_EXTENT
, /* not to use the extent cache */
1530 FI_INLINE_XATTR
, /* used for inline xattr */
1531 FI_INLINE_DATA
, /* used for inline data*/
1532 FI_INLINE_DENTRY
, /* used for inline dentry */
1533 FI_APPEND_WRITE
, /* inode has appended data */
1534 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1535 FI_NEED_IPU
, /* used for ipu per file */
1536 FI_ATOMIC_FILE
, /* indicate atomic file */
1537 FI_VOLATILE_FILE
, /* indicate volatile file */
1538 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1539 FI_DROP_CACHE
, /* drop dirty page cache */
1540 FI_DATA_EXIST
, /* indicate data exists */
1541 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1542 FI_DO_DEFRAG
, /* indicate defragment is running */
1543 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1546 static inline void __mark_inode_dirty_flag(struct inode
*inode
,
1550 case FI_INLINE_XATTR
:
1551 case FI_INLINE_DATA
:
1552 case FI_INLINE_DENTRY
:
1556 case FI_INLINE_DOTS
:
1557 mark_inode_dirty_sync(inode
);
1561 static inline void set_inode_flag(struct inode
*inode
, int flag
)
1563 if (!test_bit(flag
, &F2FS_I(inode
)->flags
))
1564 set_bit(flag
, &F2FS_I(inode
)->flags
);
1565 __mark_inode_dirty_flag(inode
, flag
, true);
1568 static inline int is_inode_flag_set(struct inode
*inode
, int flag
)
1570 return test_bit(flag
, &F2FS_I(inode
)->flags
);
1573 static inline void clear_inode_flag(struct inode
*inode
, int flag
)
1575 if (test_bit(flag
, &F2FS_I(inode
)->flags
))
1576 clear_bit(flag
, &F2FS_I(inode
)->flags
);
1577 __mark_inode_dirty_flag(inode
, flag
, false);
1580 static inline void set_acl_inode(struct inode
*inode
, umode_t mode
)
1582 F2FS_I(inode
)->i_acl_mode
= mode
;
1583 set_inode_flag(inode
, FI_ACL_MODE
);
1584 mark_inode_dirty_sync(inode
);
1587 static inline void f2fs_i_links_write(struct inode
*inode
, bool inc
)
1593 mark_inode_dirty_sync(inode
);
1596 static inline void f2fs_i_blocks_write(struct inode
*inode
,
1597 blkcnt_t diff
, bool add
)
1599 bool clean
= !is_inode_flag_set(inode
, FI_DIRTY_INODE
);
1600 bool recover
= is_inode_flag_set(inode
, FI_AUTO_RECOVER
);
1602 inode
->i_blocks
= add
? inode
->i_blocks
+ diff
:
1603 inode
->i_blocks
- diff
;
1604 mark_inode_dirty_sync(inode
);
1605 if (clean
|| recover
)
1606 set_inode_flag(inode
, FI_AUTO_RECOVER
);
1609 static inline void f2fs_i_size_write(struct inode
*inode
, loff_t i_size
)
1611 bool clean
= !is_inode_flag_set(inode
, FI_DIRTY_INODE
);
1612 bool recover
= is_inode_flag_set(inode
, FI_AUTO_RECOVER
);
1614 if (i_size_read(inode
) == i_size
)
1617 i_size_write(inode
, i_size
);
1618 mark_inode_dirty_sync(inode
);
1619 if (clean
|| recover
)
1620 set_inode_flag(inode
, FI_AUTO_RECOVER
);
1623 static inline bool f2fs_skip_inode_update(struct inode
*inode
)
1625 if (!is_inode_flag_set(inode
, FI_AUTO_RECOVER
))
1627 return F2FS_I(inode
)->last_disk_size
== i_size_read(inode
);
1630 static inline void f2fs_i_depth_write(struct inode
*inode
, unsigned int depth
)
1632 F2FS_I(inode
)->i_current_depth
= depth
;
1633 mark_inode_dirty_sync(inode
);
1636 static inline void f2fs_i_xnid_write(struct inode
*inode
, nid_t xnid
)
1638 F2FS_I(inode
)->i_xattr_nid
= xnid
;
1639 mark_inode_dirty_sync(inode
);
1642 static inline void f2fs_i_pino_write(struct inode
*inode
, nid_t pino
)
1644 F2FS_I(inode
)->i_pino
= pino
;
1645 mark_inode_dirty_sync(inode
);
1648 static inline void get_inline_info(struct inode
*inode
, struct f2fs_inode
*ri
)
1650 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
1652 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1653 set_bit(FI_INLINE_XATTR
, &fi
->flags
);
1654 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1655 set_bit(FI_INLINE_DATA
, &fi
->flags
);
1656 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1657 set_bit(FI_INLINE_DENTRY
, &fi
->flags
);
1658 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1659 set_bit(FI_DATA_EXIST
, &fi
->flags
);
1660 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1661 set_bit(FI_INLINE_DOTS
, &fi
->flags
);
1664 static inline void set_raw_inline(struct inode
*inode
, struct f2fs_inode
*ri
)
1668 if (is_inode_flag_set(inode
, FI_INLINE_XATTR
))
1669 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1670 if (is_inode_flag_set(inode
, FI_INLINE_DATA
))
1671 ri
->i_inline
|= F2FS_INLINE_DATA
;
1672 if (is_inode_flag_set(inode
, FI_INLINE_DENTRY
))
1673 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1674 if (is_inode_flag_set(inode
, FI_DATA_EXIST
))
1675 ri
->i_inline
|= F2FS_DATA_EXIST
;
1676 if (is_inode_flag_set(inode
, FI_INLINE_DOTS
))
1677 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1680 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1682 return is_inode_flag_set(inode
, FI_INLINE_XATTR
);
1685 static inline unsigned int addrs_per_inode(struct inode
*inode
)
1687 if (f2fs_has_inline_xattr(inode
))
1688 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1689 return DEF_ADDRS_PER_INODE
;
1692 static inline void *inline_xattr_addr(struct page
*page
)
1694 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1695 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1696 F2FS_INLINE_XATTR_ADDRS
]);
1699 static inline int inline_xattr_size(struct inode
*inode
)
1701 if (f2fs_has_inline_xattr(inode
))
1702 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1707 static inline int f2fs_has_inline_data(struct inode
*inode
)
1709 return is_inode_flag_set(inode
, FI_INLINE_DATA
);
1712 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1714 clear_inode_flag(inode
, FI_INLINE_DATA
);
1715 clear_inode_flag(inode
, FI_DATA_EXIST
);
1718 static inline int f2fs_exist_data(struct inode
*inode
)
1720 return is_inode_flag_set(inode
, FI_DATA_EXIST
);
1723 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1725 return is_inode_flag_set(inode
, FI_INLINE_DOTS
);
1728 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1730 return is_inode_flag_set(inode
, FI_ATOMIC_FILE
);
1733 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1735 return is_inode_flag_set(inode
, FI_VOLATILE_FILE
);
1738 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1740 return is_inode_flag_set(inode
, FI_FIRST_BLOCK_WRITTEN
);
1743 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1745 return is_inode_flag_set(inode
, FI_DROP_CACHE
);
1748 static inline void *inline_data_addr(struct page
*page
)
1750 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1751 return (void *)&(ri
->i_addr
[1]);
1754 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1756 return is_inode_flag_set(inode
, FI_INLINE_DENTRY
);
1759 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1761 if (!f2fs_has_inline_dentry(dir
))
1765 static inline int is_file(struct inode
*inode
, int type
)
1767 return F2FS_I(inode
)->i_advise
& type
;
1770 static inline void set_file(struct inode
*inode
, int type
)
1772 F2FS_I(inode
)->i_advise
|= type
;
1773 mark_inode_dirty_sync(inode
);
1776 static inline void clear_file(struct inode
*inode
, int type
)
1778 F2FS_I(inode
)->i_advise
&= ~type
;
1779 mark_inode_dirty_sync(inode
);
1782 static inline int f2fs_readonly(struct super_block
*sb
)
1784 return sb
->s_flags
& MS_RDONLY
;
1787 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1789 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1792 static inline bool is_dot_dotdot(const struct qstr
*str
)
1794 if (str
->len
== 1 && str
->name
[0] == '.')
1797 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1803 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1805 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1806 is_inode_flag_set(inode
, FI_NO_EXTENT
))
1809 return S_ISREG(inode
->i_mode
);
1812 static inline void *f2fs_kmalloc(size_t size
, gfp_t flags
)
1814 #ifdef CONFIG_F2FS_FAULT_INJECTION
1815 if (time_to_inject(FAULT_KMALLOC
))
1818 return kmalloc(size
, flags
);
1821 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1825 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1827 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1831 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1835 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1837 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1841 #define get_inode_mode(i) \
1842 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
1843 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1845 /* get offset of first page in next direct node */
1846 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1847 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1848 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1849 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1854 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1855 void truncate_data_blocks(struct dnode_of_data
*);
1856 int truncate_blocks(struct inode
*, u64
, bool);
1857 int f2fs_truncate(struct inode
*, bool);
1858 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1859 int f2fs_setattr(struct dentry
*, struct iattr
*);
1860 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1861 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1862 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1863 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1868 void f2fs_set_inode_flags(struct inode
*);
1869 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1870 int try_to_free_nats(struct f2fs_sb_info
*, int);
1871 int update_inode(struct inode
*, struct page
*);
1872 int update_inode_page(struct inode
*);
1873 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1874 void f2fs_evict_inode(struct inode
*);
1875 void handle_failed_inode(struct inode
*);
1880 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1885 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1886 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1887 unsigned char get_de_type(struct f2fs_dir_entry
*);
1888 struct f2fs_dir_entry
*find_target_dentry(struct fscrypt_name
*,
1889 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1890 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1891 unsigned int, struct fscrypt_str
*);
1892 void do_make_empty_dir(struct inode
*, struct inode
*,
1893 struct f2fs_dentry_ptr
*);
1894 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1895 const struct qstr
*, struct page
*);
1896 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1897 int room_for_filename(const void *, int, int);
1898 void f2fs_drop_nlink(struct inode
*, struct inode
*);
1899 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1901 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1902 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1903 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1904 struct page
*, struct inode
*);
1905 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1906 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1907 const struct qstr
*, f2fs_hash_t
, unsigned int);
1908 int f2fs_add_regular_entry(struct inode
*, const struct qstr
*,
1909 struct inode
*, nid_t
, umode_t
);
1910 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1912 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1914 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1915 bool f2fs_empty_dir(struct inode
*);
1917 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1919 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1920 inode
, inode
->i_ino
, inode
->i_mode
);
1926 void f2fs_inode_synced(struct inode
*);
1927 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1928 int f2fs_sync_fs(struct super_block
*, int);
1929 extern __printf(3, 4)
1930 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1931 int sanity_check_ckpt(struct f2fs_sb_info
*sbi
);
1936 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1941 struct dnode_of_data
;
1944 bool available_free_memory(struct f2fs_sb_info
*, int);
1945 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1946 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1947 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1948 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1949 pgoff_t
get_next_page_offset(struct dnode_of_data
*, pgoff_t
);
1950 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1951 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1952 int truncate_xattr_node(struct inode
*, struct page
*);
1953 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1954 int remove_inode_page(struct inode
*);
1955 struct page
*new_inode_page(struct inode
*);
1956 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1957 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1958 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1959 struct page
*get_node_page_ra(struct page
*, int);
1960 void move_node_page(struct page
*, int);
1961 int fsync_node_pages(struct f2fs_sb_info
*, struct inode
*,
1962 struct writeback_control
*, bool);
1963 int sync_node_pages(struct f2fs_sb_info
*, struct writeback_control
*);
1964 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1965 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1966 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1967 int try_to_free_nids(struct f2fs_sb_info
*, int);
1968 void recover_inline_xattr(struct inode
*, struct page
*);
1969 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1970 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1971 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1972 struct f2fs_summary_block
*);
1973 void flush_nat_entries(struct f2fs_sb_info
*);
1974 int build_node_manager(struct f2fs_sb_info
*);
1975 void destroy_node_manager(struct f2fs_sb_info
*);
1976 int __init
create_node_manager_caches(void);
1977 void destroy_node_manager_caches(void);
1982 void register_inmem_page(struct inode
*, struct page
*);
1983 void drop_inmem_pages(struct inode
*);
1984 int commit_inmem_pages(struct inode
*);
1985 void f2fs_balance_fs(struct f2fs_sb_info
*, bool);
1986 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1987 int f2fs_issue_flush(struct f2fs_sb_info
*);
1988 int create_flush_cmd_control(struct f2fs_sb_info
*);
1989 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1990 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1991 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
1992 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1993 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1994 void release_discard_addrs(struct f2fs_sb_info
*);
1995 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1996 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1997 void allocate_new_segments(struct f2fs_sb_info
*);
1998 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1999 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
2000 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
2001 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
2002 void write_node_page(unsigned int, struct f2fs_io_info
*);
2003 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
2004 void rewrite_data_page(struct f2fs_io_info
*);
2005 void __f2fs_replace_block(struct f2fs_sb_info
*, struct f2fs_summary
*,
2006 block_t
, block_t
, bool, bool);
2007 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
2008 block_t
, block_t
, unsigned char, bool, bool);
2009 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
2010 block_t
, block_t
*, struct f2fs_summary
*, int);
2011 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
, bool);
2012 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
2013 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
2014 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
2015 int lookup_journal_in_cursum(struct f2fs_journal
*, int, unsigned int, int);
2016 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
2017 int build_segment_manager(struct f2fs_sb_info
*);
2018 void destroy_segment_manager(struct f2fs_sb_info
*);
2019 int __init
create_segment_manager_caches(void);
2020 void destroy_segment_manager_caches(void);
2025 void f2fs_stop_checkpoint(struct f2fs_sb_info
*, bool);
2026 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
2027 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
2028 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
2029 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
2030 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
2031 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
2032 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
2033 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
2034 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
2035 void release_ino_entry(struct f2fs_sb_info
*, bool);
2036 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
2037 int f2fs_sync_inode_meta(struct f2fs_sb_info
*);
2038 int acquire_orphan_inode(struct f2fs_sb_info
*);
2039 void release_orphan_inode(struct f2fs_sb_info
*);
2040 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
2041 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
2042 int recover_orphan_inodes(struct f2fs_sb_info
*);
2043 int get_valid_checkpoint(struct f2fs_sb_info
*);
2044 void update_dirty_page(struct inode
*, struct page
*);
2045 void remove_dirty_inode(struct inode
*);
2046 int sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
2047 int write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
2048 void init_ino_entry_info(struct f2fs_sb_info
*);
2049 int __init
create_checkpoint_caches(void);
2050 void destroy_checkpoint_caches(void);
2055 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
2056 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info
*, struct inode
*,
2057 struct page
*, nid_t
, enum page_type
, int);
2058 void f2fs_flush_merged_bios(struct f2fs_sb_info
*);
2059 int f2fs_submit_page_bio(struct f2fs_io_info
*);
2060 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
2061 void set_data_blkaddr(struct dnode_of_data
*);
2062 void f2fs_update_data_blkaddr(struct dnode_of_data
*, block_t
);
2063 int reserve_new_blocks(struct dnode_of_data
*, blkcnt_t
);
2064 int reserve_new_block(struct dnode_of_data
*);
2065 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
2066 ssize_t
f2fs_preallocate_blocks(struct kiocb
*, struct iov_iter
*);
2067 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
2068 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
2069 struct page
*find_data_page(struct inode
*, pgoff_t
);
2070 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
2071 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
2072 int do_write_data_page(struct f2fs_io_info
*);
2073 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
2074 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
2075 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
2076 int f2fs_release_page(struct page
*, gfp_t
);
2081 int start_gc_thread(struct f2fs_sb_info
*);
2082 void stop_gc_thread(struct f2fs_sb_info
*);
2083 block_t
start_bidx_of_node(unsigned int, struct inode
*);
2084 int f2fs_gc(struct f2fs_sb_info
*, bool);
2085 void build_gc_manager(struct f2fs_sb_info
*);
2090 int recover_fsync_data(struct f2fs_sb_info
*, bool);
2091 bool space_for_roll_forward(struct f2fs_sb_info
*);
2096 #ifdef CONFIG_F2FS_STAT_FS
2097 struct f2fs_stat_info
{
2098 struct list_head stat_list
;
2099 struct f2fs_sb_info
*sbi
;
2100 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
2101 int main_area_segs
, main_area_sections
, main_area_zones
;
2102 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
2103 unsigned long long hit_total
, total_ext
;
2104 int ext_tree
, zombie_tree
, ext_node
;
2105 s64 ndirty_node
, ndirty_dent
, ndirty_meta
, ndirty_data
, inmem_pages
;
2106 unsigned int ndirty_dirs
, ndirty_files
, ndirty_all
;
2107 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
2108 int total_count
, utilization
;
2110 int inline_xattr
, inline_inode
, inline_dir
, orphans
;
2111 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
2112 unsigned int bimodal
, avg_vblocks
;
2113 int util_free
, util_valid
, util_invalid
;
2114 int rsvd_segs
, overp_segs
;
2115 int dirty_count
, node_pages
, meta_pages
;
2116 int prefree_count
, call_count
, cp_count
, bg_cp_count
;
2117 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
2118 int bg_node_segs
, bg_data_segs
;
2119 int tot_blks
, data_blks
, node_blks
;
2120 int bg_data_blks
, bg_node_blks
;
2121 int curseg
[NR_CURSEG_TYPE
];
2122 int cursec
[NR_CURSEG_TYPE
];
2123 int curzone
[NR_CURSEG_TYPE
];
2125 unsigned int segment_count
[2];
2126 unsigned int block_count
[2];
2127 unsigned int inplace_count
;
2128 unsigned long long base_mem
, cache_mem
, page_mem
;
2131 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
2133 return (struct f2fs_stat_info
*)sbi
->stat_info
;
2136 #define stat_inc_cp_count(si) ((si)->cp_count++)
2137 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2138 #define stat_inc_call_count(si) ((si)->call_count++)
2139 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2140 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2141 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2142 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2143 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2144 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2145 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2146 #define stat_inc_inline_xattr(inode) \
2148 if (f2fs_has_inline_xattr(inode)) \
2149 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2151 #define stat_dec_inline_xattr(inode) \
2153 if (f2fs_has_inline_xattr(inode)) \
2154 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2156 #define stat_inc_inline_inode(inode) \
2158 if (f2fs_has_inline_data(inode)) \
2159 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2161 #define stat_dec_inline_inode(inode) \
2163 if (f2fs_has_inline_data(inode)) \
2164 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2166 #define stat_inc_inline_dir(inode) \
2168 if (f2fs_has_inline_dentry(inode)) \
2169 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2171 #define stat_dec_inline_dir(inode) \
2173 if (f2fs_has_inline_dentry(inode)) \
2174 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2176 #define stat_inc_seg_type(sbi, curseg) \
2177 ((sbi)->segment_count[(curseg)->alloc_type]++)
2178 #define stat_inc_block_count(sbi, curseg) \
2179 ((sbi)->block_count[(curseg)->alloc_type]++)
2180 #define stat_inc_inplace_blocks(sbi) \
2181 (atomic_inc(&(sbi)->inplace_count))
2182 #define stat_inc_seg_count(sbi, type, gc_type) \
2184 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2186 if (type == SUM_TYPE_DATA) { \
2188 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2191 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2195 #define stat_inc_tot_blk_count(si, blks) \
2196 (si->tot_blks += (blks))
2198 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2200 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2201 stat_inc_tot_blk_count(si, blks); \
2202 si->data_blks += (blks); \
2203 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2206 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2208 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2209 stat_inc_tot_blk_count(si, blks); \
2210 si->node_blks += (blks); \
2211 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2214 int f2fs_build_stats(struct f2fs_sb_info
*);
2215 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2216 int __init
f2fs_create_root_stats(void);
2217 void f2fs_destroy_root_stats(void);
2219 #define stat_inc_cp_count(si)
2220 #define stat_inc_bg_cp_count(si)
2221 #define stat_inc_call_count(si)
2222 #define stat_inc_bggc_count(si)
2223 #define stat_inc_dirty_inode(sbi, type)
2224 #define stat_dec_dirty_inode(sbi, type)
2225 #define stat_inc_total_hit(sb)
2226 #define stat_inc_rbtree_node_hit(sb)
2227 #define stat_inc_largest_node_hit(sbi)
2228 #define stat_inc_cached_node_hit(sbi)
2229 #define stat_inc_inline_xattr(inode)
2230 #define stat_dec_inline_xattr(inode)
2231 #define stat_inc_inline_inode(inode)
2232 #define stat_dec_inline_inode(inode)
2233 #define stat_inc_inline_dir(inode)
2234 #define stat_dec_inline_dir(inode)
2235 #define stat_inc_seg_type(sbi, curseg)
2236 #define stat_inc_block_count(sbi, curseg)
2237 #define stat_inc_inplace_blocks(sbi)
2238 #define stat_inc_seg_count(sbi, type, gc_type)
2239 #define stat_inc_tot_blk_count(si, blks)
2240 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2241 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2243 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2244 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2245 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2246 static inline void f2fs_destroy_root_stats(void) { }
2249 extern const struct file_operations f2fs_dir_operations
;
2250 extern const struct file_operations f2fs_file_operations
;
2251 extern const struct inode_operations f2fs_file_inode_operations
;
2252 extern const struct address_space_operations f2fs_dblock_aops
;
2253 extern const struct address_space_operations f2fs_node_aops
;
2254 extern const struct address_space_operations f2fs_meta_aops
;
2255 extern const struct inode_operations f2fs_dir_inode_operations
;
2256 extern const struct inode_operations f2fs_symlink_inode_operations
;
2257 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2258 extern const struct inode_operations f2fs_special_inode_operations
;
2259 extern struct kmem_cache
*inode_entry_slab
;
2264 bool f2fs_may_inline_data(struct inode
*);
2265 bool f2fs_may_inline_dentry(struct inode
*);
2266 void read_inline_data(struct page
*, struct page
*);
2267 bool truncate_inline_inode(struct page
*, u64
);
2268 int f2fs_read_inline_data(struct inode
*, struct page
*);
2269 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2270 int f2fs_convert_inline_inode(struct inode
*);
2271 int f2fs_write_inline_data(struct inode
*, struct page
*);
2272 bool recover_inline_data(struct inode
*, struct page
*);
2273 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2274 struct fscrypt_name
*, struct page
**);
2275 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
2276 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2277 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2279 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2280 struct inode
*, struct inode
*);
2281 bool f2fs_empty_inline_dir(struct inode
*);
2282 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2283 struct fscrypt_str
*);
2284 int f2fs_inline_data_fiemap(struct inode
*,
2285 struct fiemap_extent_info
*, __u64
, __u64
);
2290 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2291 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2292 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2293 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2298 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2299 bool f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2300 unsigned int f2fs_destroy_extent_node(struct inode
*);
2301 void f2fs_destroy_extent_tree(struct inode
*);
2302 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2303 void f2fs_update_extent_cache(struct dnode_of_data
*);
2304 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2305 pgoff_t
, block_t
, unsigned int);
2306 void init_extent_cache_info(struct f2fs_sb_info
*);
2307 int __init
create_extent_cache(void);
2308 void destroy_extent_cache(void);
2313 static inline bool f2fs_encrypted_inode(struct inode
*inode
)
2315 return file_is_encrypt(inode
);
2318 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2320 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2321 file_set_encrypt(inode
);
2325 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2327 return bio
->bi_private
!= NULL
;
2330 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2332 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2335 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2337 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2338 umode_t mode
= inode
->i_mode
;
2340 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2346 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2347 #define fscrypt_set_d_op(i)
2348 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2349 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2350 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2351 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2352 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2353 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2354 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2355 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2356 #define fscrypt_process_policy fscrypt_notsupp_process_policy
2357 #define fscrypt_get_policy fscrypt_notsupp_get_policy
2358 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2359 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2360 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2361 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2362 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2363 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2364 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2365 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2366 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2367 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2368 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk