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
51 struct f2fs_fault_info
{
53 unsigned int inject_rate
;
54 unsigned int inject_type
;
57 extern struct f2fs_fault_info f2fs_fault
;
58 extern char *fault_name
[FAULT_MAX
];
59 #define IS_FAULT_SET(type) (f2fs_fault.inject_type & (1 << (type)))
61 static inline bool time_to_inject(int type
)
63 if (!f2fs_fault
.inject_rate
)
65 if (type
== FAULT_KMALLOC
&& !IS_FAULT_SET(type
))
67 else if (type
== FAULT_PAGE_ALLOC
&& !IS_FAULT_SET(type
))
69 else if (type
== FAULT_ALLOC_NID
&& !IS_FAULT_SET(type
))
71 else if (type
== FAULT_ORPHAN
&& !IS_FAULT_SET(type
))
73 else if (type
== FAULT_BLOCK
&& !IS_FAULT_SET(type
))
75 else if (type
== FAULT_DIR_DEPTH
&& !IS_FAULT_SET(type
))
78 atomic_inc(&f2fs_fault
.inject_ops
);
79 if (atomic_read(&f2fs_fault
.inject_ops
) >= f2fs_fault
.inject_rate
) {
80 atomic_set(&f2fs_fault
.inject_ops
, 0);
81 printk("%sF2FS-fs : inject %s in %pF\n",
84 __builtin_return_address(0));
94 #define F2FS_MOUNT_BG_GC 0x00000001
95 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
96 #define F2FS_MOUNT_DISCARD 0x00000004
97 #define F2FS_MOUNT_NOHEAP 0x00000008
98 #define F2FS_MOUNT_XATTR_USER 0x00000010
99 #define F2FS_MOUNT_POSIX_ACL 0x00000020
100 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
101 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
102 #define F2FS_MOUNT_INLINE_DATA 0x00000100
103 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
104 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
105 #define F2FS_MOUNT_NOBARRIER 0x00000800
106 #define F2FS_MOUNT_FASTBOOT 0x00001000
107 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
108 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
109 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
110 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
112 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
113 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
114 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
116 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
117 typecheck(unsigned long long, b) && \
118 ((long long)((a) - (b)) > 0))
120 typedef u32 block_t
; /*
121 * should not change u32, since it is the on-disk block
122 * address format, __le32.
126 struct f2fs_mount_info
{
130 #define F2FS_FEATURE_ENCRYPT 0x0001
132 #define F2FS_HAS_FEATURE(sb, mask) \
133 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
134 #define F2FS_SET_FEATURE(sb, mask) \
135 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
136 #define F2FS_CLEAR_FEATURE(sb, mask) \
137 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
140 * For checkpoint manager
155 #define DEF_BATCHED_TRIM_SECTIONS 32
156 #define BATCHED_TRIM_SEGMENTS(sbi) \
157 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
158 #define BATCHED_TRIM_BLOCKS(sbi) \
159 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
160 #define DEF_CP_INTERVAL 60 /* 60 secs */
161 #define DEF_IDLE_INTERVAL 120 /* 2 mins */
172 * For CP/NAT/SIT/SSA readahead
182 /* for the list of ino */
184 ORPHAN_INO
, /* for orphan ino list */
185 APPEND_INO
, /* for append ino list */
186 UPDATE_INO
, /* for update ino list */
187 MAX_INO_ENTRY
, /* max. list */
191 struct list_head list
; /* list head */
192 nid_t ino
; /* inode number */
195 /* for the list of inodes to be GCed */
197 struct list_head list
; /* list head */
198 struct inode
*inode
; /* vfs inode pointer */
201 /* for the list of blockaddresses to be discarded */
202 struct discard_entry
{
203 struct list_head list
; /* list head */
204 block_t blkaddr
; /* block address to be discarded */
205 int len
; /* # of consecutive blocks of the discard */
208 /* for the list of fsync inodes, used only during recovery */
209 struct fsync_inode_entry
{
210 struct list_head list
; /* list head */
211 struct inode
*inode
; /* vfs inode pointer */
212 block_t blkaddr
; /* block address locating the last fsync */
213 block_t last_dentry
; /* block address locating the last dentry */
216 #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
217 #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
219 #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
220 #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
221 #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
222 #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
224 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
225 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
227 static inline int update_nats_in_cursum(struct f2fs_journal
*journal
, int i
)
229 int before
= nats_in_cursum(journal
);
230 journal
->n_nats
= cpu_to_le16(before
+ i
);
234 static inline int update_sits_in_cursum(struct f2fs_journal
*journal
, int i
)
236 int before
= sits_in_cursum(journal
);
237 journal
->n_sits
= cpu_to_le16(before
+ i
);
241 static inline bool __has_cursum_space(struct f2fs_journal
*journal
,
244 if (type
== NAT_JOURNAL
)
245 return size
<= MAX_NAT_JENTRIES(journal
);
246 return size
<= MAX_SIT_JENTRIES(journal
);
252 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
253 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
254 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
256 #define F2FS_IOCTL_MAGIC 0xf5
257 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
258 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
259 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
260 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
261 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
262 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
263 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
264 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
266 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
267 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
268 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
271 * should be same as XFS_IOC_GOINGDOWN.
272 * Flags for going down operation used by FS_IOC_GOINGDOWN
274 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
275 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
276 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
277 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
278 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
280 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
282 * ioctl commands in 32 bit emulation
284 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
285 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
286 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
289 struct f2fs_defragment
{
295 * For INODE and NODE manager
297 /* for directory operations */
298 struct f2fs_dentry_ptr
{
301 struct f2fs_dir_entry
*dentry
;
302 __u8 (*filename
)[F2FS_SLOT_LEN
];
306 static inline void make_dentry_ptr(struct inode
*inode
,
307 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
312 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
313 d
->max
= NR_DENTRY_IN_BLOCK
;
314 d
->bitmap
= &t
->dentry_bitmap
;
315 d
->dentry
= t
->dentry
;
316 d
->filename
= t
->filename
;
318 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
319 d
->max
= NR_INLINE_DENTRY
;
320 d
->bitmap
= &t
->dentry_bitmap
;
321 d
->dentry
= t
->dentry
;
322 d
->filename
= t
->filename
;
327 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
328 * as its node offset to distinguish from index node blocks.
329 * But some bits are used to mark the node block.
331 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
334 ALLOC_NODE
, /* allocate a new node page if needed */
335 LOOKUP_NODE
, /* look up a node without readahead */
337 * look up a node with readahead called
342 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
344 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
346 /* vector size for gang look-up from extent cache that consists of radix tree */
347 #define EXT_TREE_VEC_SIZE 64
349 /* for in-memory extent cache entry */
350 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
352 /* number of extent info in extent cache we try to shrink */
353 #define EXTENT_CACHE_SHRINK_NUMBER 128
356 unsigned int fofs
; /* start offset in a file */
357 u32 blk
; /* start block address of the extent */
358 unsigned int len
; /* length of the extent */
362 struct rb_node rb_node
; /* rb node located in rb-tree */
363 struct list_head list
; /* node in global extent list of sbi */
364 struct extent_info ei
; /* extent info */
365 struct extent_tree
*et
; /* extent tree pointer */
369 nid_t ino
; /* inode number */
370 struct rb_root root
; /* root of extent info rb-tree */
371 struct extent_node
*cached_en
; /* recently accessed extent node */
372 struct extent_info largest
; /* largested extent info */
373 struct list_head list
; /* to be used by sbi->zombie_list */
374 rwlock_t lock
; /* protect extent info rb-tree */
375 atomic_t node_cnt
; /* # of extent node in rb-tree*/
379 * This structure is taken from ext4_map_blocks.
381 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
383 #define F2FS_MAP_NEW (1 << BH_New)
384 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
385 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
386 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
389 struct f2fs_map_blocks
{
393 unsigned int m_flags
;
394 pgoff_t
*m_next_pgofs
; /* point next possible non-hole pgofs */
397 /* for flag in get_data_block */
398 #define F2FS_GET_BLOCK_READ 0
399 #define F2FS_GET_BLOCK_DIO 1
400 #define F2FS_GET_BLOCK_FIEMAP 2
401 #define F2FS_GET_BLOCK_BMAP 3
402 #define F2FS_GET_BLOCK_PRE_DIO 4
403 #define F2FS_GET_BLOCK_PRE_AIO 5
406 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
408 #define FADVISE_COLD_BIT 0x01
409 #define FADVISE_LOST_PINO_BIT 0x02
410 #define FADVISE_ENCRYPT_BIT 0x04
411 #define FADVISE_ENC_NAME_BIT 0x08
413 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
414 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
415 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
416 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
417 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
418 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
419 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
420 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
421 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
422 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
423 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
425 #define DEF_DIR_LEVEL 0
427 struct f2fs_inode_info
{
428 struct inode vfs_inode
; /* serve a vfs inode */
429 unsigned long i_flags
; /* keep an inode flags for ioctl */
430 unsigned char i_advise
; /* use to give file attribute hints */
431 unsigned char i_dir_level
; /* use for dentry level for large dir */
432 unsigned int i_current_depth
; /* use only in directory structure */
433 unsigned int i_pino
; /* parent inode number */
434 umode_t i_acl_mode
; /* keep file acl mode temporarily */
436 /* Use below internally in f2fs*/
437 unsigned long flags
; /* use to pass per-file flags */
438 struct rw_semaphore i_sem
; /* protect fi info */
439 struct percpu_counter dirty_pages
; /* # of dirty pages */
440 f2fs_hash_t chash
; /* hash value of given file name */
441 unsigned int clevel
; /* maximum level of given file name */
442 nid_t i_xattr_nid
; /* node id that contains xattrs */
443 unsigned long long xattr_ver
; /* cp version of xattr modification */
445 struct list_head dirty_list
; /* linked in global dirty list */
446 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
447 struct mutex inmem_lock
; /* lock for inmemory pages */
448 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
451 static inline void get_extent_info(struct extent_info
*ext
,
452 struct f2fs_extent
*i_ext
)
454 ext
->fofs
= le32_to_cpu(i_ext
->fofs
);
455 ext
->blk
= le32_to_cpu(i_ext
->blk
);
456 ext
->len
= le32_to_cpu(i_ext
->len
);
459 static inline void set_raw_extent(struct extent_info
*ext
,
460 struct f2fs_extent
*i_ext
)
462 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
463 i_ext
->blk
= cpu_to_le32(ext
->blk
);
464 i_ext
->len
= cpu_to_le32(ext
->len
);
467 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
468 u32 blk
, unsigned int len
)
475 static inline bool __is_extent_same(struct extent_info
*ei1
,
476 struct extent_info
*ei2
)
478 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
479 ei1
->len
== ei2
->len
);
482 static inline bool __is_extent_mergeable(struct extent_info
*back
,
483 struct extent_info
*front
)
485 return (back
->fofs
+ back
->len
== front
->fofs
&&
486 back
->blk
+ back
->len
== front
->blk
);
489 static inline bool __is_back_mergeable(struct extent_info
*cur
,
490 struct extent_info
*back
)
492 return __is_extent_mergeable(back
, cur
);
495 static inline bool __is_front_mergeable(struct extent_info
*cur
,
496 struct extent_info
*front
)
498 return __is_extent_mergeable(cur
, front
);
501 static inline void __try_update_largest_extent(struct inode
*inode
,
502 struct extent_tree
*et
, struct extent_node
*en
)
504 if (en
->ei
.len
> et
->largest
.len
) {
505 et
->largest
= en
->ei
;
506 mark_inode_dirty_sync(inode
);
510 struct f2fs_nm_info
{
511 block_t nat_blkaddr
; /* base disk address of NAT */
512 nid_t max_nid
; /* maximum possible node ids */
513 nid_t available_nids
; /* maximum available node ids */
514 nid_t next_scan_nid
; /* the next nid to be scanned */
515 unsigned int ram_thresh
; /* control the memory footprint */
516 unsigned int ra_nid_pages
; /* # of nid pages to be readaheaded */
517 unsigned int dirty_nats_ratio
; /* control dirty nats ratio threshold */
519 /* NAT cache management */
520 struct radix_tree_root nat_root
;/* root of the nat entry cache */
521 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
522 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
523 struct list_head nat_entries
; /* cached nat entry list (clean) */
524 unsigned int nat_cnt
; /* the # of cached nat entries */
525 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
527 /* free node ids management */
528 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
529 struct list_head free_nid_list
; /* a list for free nids */
530 spinlock_t free_nid_list_lock
; /* protect free nid list */
531 unsigned int fcnt
; /* the number of free node id */
532 struct mutex build_lock
; /* lock for build free nids */
535 char *nat_bitmap
; /* NAT bitmap pointer */
536 int bitmap_size
; /* bitmap size */
540 * this structure is used as one of function parameters.
541 * all the information are dedicated to a given direct node block determined
542 * by the data offset in a file.
544 struct dnode_of_data
{
545 struct inode
*inode
; /* vfs inode pointer */
546 struct page
*inode_page
; /* its inode page, NULL is possible */
547 struct page
*node_page
; /* cached direct node page */
548 nid_t nid
; /* node id of the direct node block */
549 unsigned int ofs_in_node
; /* data offset in the node page */
550 bool inode_page_locked
; /* inode page is locked or not */
551 bool node_changed
; /* is node block changed */
552 char cur_level
; /* level of hole node page */
553 char max_level
; /* level of current page located */
554 block_t data_blkaddr
; /* block address of the node block */
557 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
558 struct page
*ipage
, struct page
*npage
, nid_t nid
)
560 memset(dn
, 0, sizeof(*dn
));
562 dn
->inode_page
= ipage
;
563 dn
->node_page
= npage
;
570 * By default, there are 6 active log areas across the whole main area.
571 * When considering hot and cold data separation to reduce cleaning overhead,
572 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
574 * In the current design, you should not change the numbers intentionally.
575 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
576 * logs individually according to the underlying devices. (default: 6)
577 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
578 * data and 8 for node logs.
580 #define NR_CURSEG_DATA_TYPE (3)
581 #define NR_CURSEG_NODE_TYPE (3)
582 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
585 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
586 CURSEG_WARM_DATA
, /* data blocks */
587 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
588 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
589 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
590 CURSEG_COLD_NODE
, /* indirect node blocks */
592 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
596 struct completion wait
;
597 struct llist_node llnode
;
601 struct flush_cmd_control
{
602 struct task_struct
*f2fs_issue_flush
; /* flush thread */
603 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
604 struct llist_head issue_list
; /* list for command issue */
605 struct llist_node
*dispatch_list
; /* list for command dispatch */
608 struct f2fs_sm_info
{
609 struct sit_info
*sit_info
; /* whole segment information */
610 struct free_segmap_info
*free_info
; /* free segment information */
611 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
612 struct curseg_info
*curseg_array
; /* active segment information */
614 block_t seg0_blkaddr
; /* block address of 0'th segment */
615 block_t main_blkaddr
; /* start block address of main area */
616 block_t ssa_blkaddr
; /* start block address of SSA area */
618 unsigned int segment_count
; /* total # of segments */
619 unsigned int main_segments
; /* # of segments in main area */
620 unsigned int reserved_segments
; /* # of reserved segments */
621 unsigned int ovp_segments
; /* # of overprovision segments */
623 /* a threshold to reclaim prefree segments */
624 unsigned int rec_prefree_segments
;
626 /* for small discard management */
627 struct list_head discard_list
; /* 4KB discard list */
628 int nr_discards
; /* # of discards in the list */
629 int max_discards
; /* max. discards to be issued */
631 /* for batched trimming */
632 unsigned int trim_sections
; /* # of sections to trim */
634 struct list_head sit_entry_set
; /* sit entry set list */
636 unsigned int ipu_policy
; /* in-place-update policy */
637 unsigned int min_ipu_util
; /* in-place-update threshold */
638 unsigned int min_fsync_blocks
; /* threshold for fsync */
640 /* for flush command control */
641 struct flush_cmd_control
*cmd_control_info
;
649 * COUNT_TYPE for monitoring
651 * f2fs monitors the number of several block types such as on-writeback,
652 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
664 * The below are the page types of bios used in submit_bio().
665 * The available types are:
666 * DATA User data pages. It operates as async mode.
667 * NODE Node pages. It operates as async mode.
668 * META FS metadata pages such as SIT, NAT, CP.
669 * NR_PAGE_TYPE The number of page types.
670 * META_FLUSH Make sure the previous pages are written
671 * with waiting the bio's completion
672 * ... Only can be used with META.
674 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
681 INMEM
, /* the below types are used by tracepoints only. */
688 struct f2fs_io_info
{
689 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
690 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
691 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
692 block_t new_blkaddr
; /* new block address to be written */
693 block_t old_blkaddr
; /* old block address before Cow */
694 struct page
*page
; /* page to be written */
695 struct page
*encrypted_page
; /* encrypted page */
698 #define is_read_io(rw) (((rw) & 1) == READ)
699 struct f2fs_bio_info
{
700 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
701 struct bio
*bio
; /* bios to merge */
702 sector_t last_block_in_bio
; /* last block number */
703 struct f2fs_io_info fio
; /* store buffered io info. */
704 struct rw_semaphore io_rwsem
; /* blocking op for bio */
708 DIR_INODE
, /* for dirty dir inode */
709 FILE_INODE
, /* for dirty regular/symlink inode */
713 /* for inner inode cache management */
714 struct inode_management
{
715 struct radix_tree_root ino_root
; /* ino entry array */
716 spinlock_t ino_lock
; /* for ino entry lock */
717 struct list_head ino_list
; /* inode list head */
718 unsigned long ino_num
; /* number of entries */
721 /* For s_flag in struct f2fs_sb_info */
723 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
724 SBI_IS_CLOSE
, /* specify unmounting */
725 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
726 SBI_POR_DOING
, /* recovery is doing or not */
727 SBI_NEED_SB_WRITE
, /* need to recover superblock */
736 #ifdef CONFIG_F2FS_FS_ENCRYPTION
737 #define F2FS_KEY_DESC_PREFIX "f2fs:"
738 #define F2FS_KEY_DESC_PREFIX_SIZE 5
740 struct f2fs_sb_info
{
741 struct super_block
*sb
; /* pointer to VFS super block */
742 struct proc_dir_entry
*s_proc
; /* proc entry */
743 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
744 int valid_super_block
; /* valid super block no */
745 int s_flag
; /* flags for sbi */
747 #ifdef CONFIG_F2FS_FS_ENCRYPTION
748 u8 key_prefix
[F2FS_KEY_DESC_PREFIX_SIZE
];
751 /* for node-related operations */
752 struct f2fs_nm_info
*nm_info
; /* node manager */
753 struct inode
*node_inode
; /* cache node blocks */
755 /* for segment-related operations */
756 struct f2fs_sm_info
*sm_info
; /* segment manager */
758 /* for bio operations */
759 struct f2fs_bio_info read_io
; /* for read bios */
760 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
763 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
764 struct inode
*meta_inode
; /* cache meta blocks */
765 struct mutex cp_mutex
; /* checkpoint procedure lock */
766 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
767 struct rw_semaphore node_write
; /* locking node writes */
768 struct mutex writepages
; /* mutex for writepages() */
769 wait_queue_head_t cp_wait
;
770 unsigned long last_time
[MAX_TIME
]; /* to store time in jiffies */
771 long interval_time
[MAX_TIME
]; /* to store thresholds */
773 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
775 /* for orphan inode, use 0'th array */
776 unsigned int max_orphans
; /* max orphan inodes */
778 /* for inode management */
779 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
780 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
782 /* for extent tree cache */
783 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
784 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
785 struct list_head extent_list
; /* lru list for shrinker */
786 spinlock_t extent_lock
; /* locking extent lru list */
787 atomic_t total_ext_tree
; /* extent tree count */
788 struct list_head zombie_list
; /* extent zombie tree list */
789 atomic_t total_zombie_tree
; /* extent zombie tree count */
790 atomic_t total_ext_node
; /* extent info count */
792 /* basic filesystem units */
793 unsigned int log_sectors_per_block
; /* log2 sectors per block */
794 unsigned int log_blocksize
; /* log2 block size */
795 unsigned int blocksize
; /* block size */
796 unsigned int root_ino_num
; /* root inode number*/
797 unsigned int node_ino_num
; /* node inode number*/
798 unsigned int meta_ino_num
; /* meta inode number*/
799 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
800 unsigned int blocks_per_seg
; /* blocks per segment */
801 unsigned int segs_per_sec
; /* segments per section */
802 unsigned int secs_per_zone
; /* sections per zone */
803 unsigned int total_sections
; /* total section count */
804 unsigned int total_node_count
; /* total node block count */
805 unsigned int total_valid_node_count
; /* valid node block count */
806 loff_t max_file_blocks
; /* max block index of file */
807 int active_logs
; /* # of active logs */
808 int dir_level
; /* directory level */
810 block_t user_block_count
; /* # of user blocks */
811 block_t total_valid_block_count
; /* # of valid blocks */
812 block_t discard_blks
; /* discard command candidats */
813 block_t last_valid_block_count
; /* for recovery */
814 u32 s_next_generation
; /* for NFS support */
815 atomic_t nr_wb_bios
; /* # of writeback bios */
817 /* # of pages, see count_type */
818 struct percpu_counter nr_pages
[NR_COUNT_TYPE
];
819 /* # of allocated blocks */
820 struct percpu_counter alloc_valid_block_count
;
822 /* valid inode count */
823 struct percpu_counter total_valid_inode_count
;
825 struct f2fs_mount_info mount_opt
; /* mount options */
827 /* for cleaning operations */
828 struct mutex gc_mutex
; /* mutex for GC */
829 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
830 unsigned int cur_victim_sec
; /* current victim section num */
832 /* maximum # of trials to find a victim segment for SSR and GC */
833 unsigned int max_victim_search
;
836 * for stat information.
837 * one is for the LFS mode, and the other is for the SSR mode.
839 #ifdef CONFIG_F2FS_STAT_FS
840 struct f2fs_stat_info
*stat_info
; /* FS status information */
841 unsigned int segment_count
[2]; /* # of allocated segments */
842 unsigned int block_count
[2]; /* # of allocated blocks */
843 atomic_t inplace_count
; /* # of inplace update */
844 atomic64_t total_hit_ext
; /* # of lookup extent cache */
845 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
846 atomic64_t read_hit_largest
; /* # of hit largest extent node */
847 atomic64_t read_hit_cached
; /* # of hit cached extent node */
848 atomic_t inline_xattr
; /* # of inline_xattr inodes */
849 atomic_t inline_inode
; /* # of inline_data inodes */
850 atomic_t inline_dir
; /* # of inline_dentry inodes */
851 int bg_gc
; /* background gc calls */
852 unsigned int ndirty_inode
[NR_INODE_TYPE
]; /* # of dirty inodes */
854 unsigned int last_victim
[2]; /* last victim segment # */
855 spinlock_t stat_lock
; /* lock for stat operations */
857 /* For sysfs suppport */
858 struct kobject s_kobj
;
859 struct completion s_kobj_unregister
;
861 /* For shrinker support */
862 struct list_head s_list
;
863 struct mutex umount_mutex
;
864 unsigned int shrinker_run_no
;
866 /* For write statistics */
867 u64 sectors_written_start
;
870 /* Reference to checksum algorithm driver via cryptoapi */
871 struct crypto_shash
*s_chksum_driver
;
874 /* For write statistics. Suppose sector size is 512 bytes,
875 * and the return value is in kbytes. s is of struct f2fs_sb_info.
877 #define BD_PART_WRITTEN(s) \
878 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
879 s->sectors_written_start) >> 1)
881 static inline void f2fs_update_time(struct f2fs_sb_info
*sbi
, int type
)
883 sbi
->last_time
[type
] = jiffies
;
886 static inline bool f2fs_time_over(struct f2fs_sb_info
*sbi
, int type
)
888 struct timespec ts
= {sbi
->interval_time
[type
], 0};
889 unsigned long interval
= timespec_to_jiffies(&ts
);
891 return time_after(jiffies
, sbi
->last_time
[type
] + interval
);
894 static inline bool is_idle(struct f2fs_sb_info
*sbi
)
896 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
897 struct request_queue
*q
= bdev_get_queue(bdev
);
898 struct request_list
*rl
= &q
->root_rl
;
900 if (rl
->count
[BLK_RW_SYNC
] || rl
->count
[BLK_RW_ASYNC
])
903 return f2fs_time_over(sbi
, REQ_TIME
);
909 static inline u32
f2fs_crc32(struct f2fs_sb_info
*sbi
, const void *address
,
912 SHASH_DESC_ON_STACK(shash
, sbi
->s_chksum_driver
);
913 u32
*ctx
= (u32
*)shash_desc_ctx(shash
);
916 shash
->tfm
= sbi
->s_chksum_driver
;
918 *ctx
= F2FS_SUPER_MAGIC
;
920 err
= crypto_shash_update(shash
, address
, length
);
926 static inline bool f2fs_crc_valid(struct f2fs_sb_info
*sbi
, __u32 blk_crc
,
927 void *buf
, size_t buf_size
)
929 return f2fs_crc32(sbi
, buf
, buf_size
) == blk_crc
;
932 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
934 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
937 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
939 return sb
->s_fs_info
;
942 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
944 return F2FS_SB(inode
->i_sb
);
947 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
949 return F2FS_I_SB(mapping
->host
);
952 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
954 return F2FS_M_SB(page
->mapping
);
957 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
959 return (struct f2fs_super_block
*)(sbi
->raw_super
);
962 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
964 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
967 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
969 return (struct f2fs_node
*)page_address(page
);
972 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
974 return &((struct f2fs_node
*)page_address(page
))->i
;
977 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
979 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
982 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
984 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
987 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
989 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
992 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
994 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
997 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
999 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
1002 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
1004 return sbi
->meta_inode
->i_mapping
;
1007 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
1009 return sbi
->node_inode
->i_mapping
;
1012 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
1014 return sbi
->s_flag
& (0x01 << type
);
1017 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
1019 sbi
->s_flag
|= (0x01 << type
);
1022 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
1024 sbi
->s_flag
&= ~(0x01 << type
);
1027 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
1029 return le64_to_cpu(cp
->checkpoint_ver
);
1032 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1034 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1035 return ckpt_flags
& f
;
1038 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1040 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1042 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1045 static inline void clear_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 f2fs_lock_op(struct f2fs_sb_info
*sbi
)
1054 down_read(&sbi
->cp_rwsem
);
1057 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
1059 up_read(&sbi
->cp_rwsem
);
1062 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
1064 down_write(&sbi
->cp_rwsem
);
1067 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
1069 up_write(&sbi
->cp_rwsem
);
1072 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
1074 int reason
= CP_SYNC
;
1076 if (test_opt(sbi
, FASTBOOT
))
1077 reason
= CP_FASTBOOT
;
1078 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
1083 static inline bool __remain_node_summaries(int reason
)
1085 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
1088 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
1090 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
1091 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1095 * Check whether the given nid is within node id range.
1097 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1099 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1101 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1106 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1109 * Check whether the inode has blocks or not
1111 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1113 if (F2FS_I(inode
)->i_xattr_nid
)
1114 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1116 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1119 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1121 return ofs
== XATTR_NODE_OFFSET
;
1124 static inline void f2fs_i_blocks_write(struct inode
*, blkcnt_t
, bool);
1125 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1126 struct inode
*inode
, blkcnt_t
*count
)
1128 block_t valid_block_count
;
1130 spin_lock(&sbi
->stat_lock
);
1131 #ifdef CONFIG_F2FS_FAULT_INJECTION
1132 if (time_to_inject(FAULT_BLOCK
)) {
1133 spin_unlock(&sbi
->stat_lock
);
1138 sbi
->total_valid_block_count
+ (block_t
)(*count
);
1139 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1140 *count
= sbi
->user_block_count
- sbi
->total_valid_block_count
;
1142 spin_unlock(&sbi
->stat_lock
);
1146 /* *count can be recalculated */
1147 f2fs_i_blocks_write(inode
, *count
, true);
1148 sbi
->total_valid_block_count
=
1149 sbi
->total_valid_block_count
+ (block_t
)(*count
);
1150 spin_unlock(&sbi
->stat_lock
);
1152 percpu_counter_add(&sbi
->alloc_valid_block_count
, (*count
));
1156 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1157 struct inode
*inode
,
1160 spin_lock(&sbi
->stat_lock
);
1161 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1162 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1163 f2fs_i_blocks_write(inode
, count
, false);
1164 sbi
->total_valid_block_count
-= (block_t
)count
;
1165 spin_unlock(&sbi
->stat_lock
);
1168 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1170 percpu_counter_inc(&sbi
->nr_pages
[count_type
]);
1171 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1174 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1176 percpu_counter_inc(&F2FS_I(inode
)->dirty_pages
);
1177 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1178 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1181 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1183 percpu_counter_dec(&sbi
->nr_pages
[count_type
]);
1186 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1188 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1189 !S_ISLNK(inode
->i_mode
))
1192 percpu_counter_dec(&F2FS_I(inode
)->dirty_pages
);
1193 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1194 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1197 static inline s64
get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1199 return percpu_counter_sum_positive(&sbi
->nr_pages
[count_type
]);
1202 static inline s64
get_dirty_pages(struct inode
*inode
)
1204 return percpu_counter_sum_positive(&F2FS_I(inode
)->dirty_pages
);
1207 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1209 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1210 unsigned int segs
= (get_pages(sbi
, block_type
) + pages_per_sec
- 1) >>
1211 sbi
->log_blocks_per_seg
;
1213 return segs
/ sbi
->segs_per_sec
;
1216 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1218 return sbi
->total_valid_block_count
;
1221 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1223 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1225 /* return NAT or SIT bitmap */
1226 if (flag
== NAT_BITMAP
)
1227 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1228 else if (flag
== SIT_BITMAP
)
1229 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1234 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1236 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1239 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1241 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1244 if (__cp_payload(sbi
) > 0) {
1245 if (flag
== NAT_BITMAP
)
1246 return &ckpt
->sit_nat_version_bitmap
;
1248 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1250 offset
= (flag
== NAT_BITMAP
) ?
1251 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1252 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1256 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1259 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1260 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1262 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1265 * odd numbered checkpoint should at cp segment 0
1266 * and even segment must be at cp segment 1
1268 if (!(ckpt_version
& 1))
1269 start_addr
+= sbi
->blocks_per_seg
;
1274 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1276 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1279 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1280 struct inode
*inode
)
1282 block_t valid_block_count
;
1283 unsigned int valid_node_count
;
1285 spin_lock(&sbi
->stat_lock
);
1287 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1288 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1289 spin_unlock(&sbi
->stat_lock
);
1293 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1294 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1295 spin_unlock(&sbi
->stat_lock
);
1300 f2fs_i_blocks_write(inode
, 1, true);
1302 sbi
->total_valid_node_count
++;
1303 sbi
->total_valid_block_count
++;
1304 spin_unlock(&sbi
->stat_lock
);
1306 percpu_counter_inc(&sbi
->alloc_valid_block_count
);
1310 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1311 struct inode
*inode
)
1313 spin_lock(&sbi
->stat_lock
);
1315 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1316 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1317 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1319 f2fs_i_blocks_write(inode
, 1, false);
1320 sbi
->total_valid_node_count
--;
1321 sbi
->total_valid_block_count
--;
1323 spin_unlock(&sbi
->stat_lock
);
1326 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1328 return sbi
->total_valid_node_count
;
1331 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1333 percpu_counter_inc(&sbi
->total_valid_inode_count
);
1336 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1338 percpu_counter_dec(&sbi
->total_valid_inode_count
);
1341 static inline s64
valid_inode_count(struct f2fs_sb_info
*sbi
)
1343 return percpu_counter_sum_positive(&sbi
->total_valid_inode_count
);
1346 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1347 pgoff_t index
, bool for_write
)
1349 #ifdef CONFIG_F2FS_FAULT_INJECTION
1350 struct page
*page
= find_lock_page(mapping
, index
);
1354 if (time_to_inject(FAULT_PAGE_ALLOC
))
1358 return grab_cache_page(mapping
, index
);
1359 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1362 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1364 char *src_kaddr
= kmap(src
);
1365 char *dst_kaddr
= kmap(dst
);
1367 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1372 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1378 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1384 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1387 f2fs_put_page(dn
->node_page
, 1);
1388 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1389 f2fs_put_page(dn
->inode_page
, 0);
1390 dn
->node_page
= NULL
;
1391 dn
->inode_page
= NULL
;
1394 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1397 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1400 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1405 entry
= kmem_cache_alloc(cachep
, flags
);
1407 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1411 static inline struct bio
*f2fs_bio_alloc(int npages
)
1415 /* No failure on bio allocation */
1416 bio
= bio_alloc(GFP_NOIO
, npages
);
1418 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1422 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1423 unsigned long index
, void *item
)
1425 while (radix_tree_insert(root
, index
, item
))
1429 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1431 static inline bool IS_INODE(struct page
*page
)
1433 struct f2fs_node
*p
= F2FS_NODE(page
);
1434 return RAW_IS_INODE(p
);
1437 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1439 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1442 static inline block_t
datablock_addr(struct page
*node_page
,
1443 unsigned int offset
)
1445 struct f2fs_node
*raw_node
;
1447 raw_node
= F2FS_NODE(node_page
);
1448 addr_array
= blkaddr_in_node(raw_node
);
1449 return le32_to_cpu(addr_array
[offset
]);
1452 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1457 mask
= 1 << (7 - (nr
& 0x07));
1458 return mask
& *addr
;
1461 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1466 mask
= 1 << (7 - (nr
& 0x07));
1470 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1475 mask
= 1 << (7 - (nr
& 0x07));
1479 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1485 mask
= 1 << (7 - (nr
& 0x07));
1491 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1497 mask
= 1 << (7 - (nr
& 0x07));
1503 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1508 mask
= 1 << (7 - (nr
& 0x07));
1512 /* used for f2fs_inode_info->flags */
1514 FI_NEW_INODE
, /* indicate newly allocated inode */
1515 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1516 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1517 FI_INC_LINK
, /* need to increment i_nlink */
1518 FI_ACL_MODE
, /* indicate acl mode */
1519 FI_NO_ALLOC
, /* should not allocate any blocks */
1520 FI_FREE_NID
, /* free allocated nide */
1521 FI_UPDATE_DIR
, /* should update inode block for consistency */
1522 FI_NO_EXTENT
, /* not to use the extent cache */
1523 FI_INLINE_XATTR
, /* used for inline xattr */
1524 FI_INLINE_DATA
, /* used for inline data*/
1525 FI_INLINE_DENTRY
, /* used for inline dentry */
1526 FI_APPEND_WRITE
, /* inode has appended data */
1527 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1528 FI_NEED_IPU
, /* used for ipu per file */
1529 FI_ATOMIC_FILE
, /* indicate atomic file */
1530 FI_VOLATILE_FILE
, /* indicate volatile file */
1531 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1532 FI_DROP_CACHE
, /* drop dirty page cache */
1533 FI_DATA_EXIST
, /* indicate data exists */
1534 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1535 FI_DO_DEFRAG
, /* indicate defragment is running */
1536 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1539 static inline void __mark_inode_dirty_flag(struct inode
*inode
,
1543 case FI_INLINE_XATTR
:
1544 case FI_INLINE_DATA
:
1545 case FI_INLINE_DENTRY
:
1549 case FI_INLINE_DOTS
:
1550 mark_inode_dirty_sync(inode
);
1554 static inline void set_inode_flag(struct inode
*inode
, int flag
)
1556 if (!test_bit(flag
, &F2FS_I(inode
)->flags
))
1557 set_bit(flag
, &F2FS_I(inode
)->flags
);
1558 __mark_inode_dirty_flag(inode
, flag
, true);
1561 static inline int is_inode_flag_set(struct inode
*inode
, int flag
)
1563 return test_bit(flag
, &F2FS_I(inode
)->flags
);
1566 static inline void clear_inode_flag(struct inode
*inode
, int flag
)
1568 if (test_bit(flag
, &F2FS_I(inode
)->flags
))
1569 clear_bit(flag
, &F2FS_I(inode
)->flags
);
1570 __mark_inode_dirty_flag(inode
, flag
, false);
1573 static inline void set_acl_inode(struct inode
*inode
, umode_t mode
)
1575 F2FS_I(inode
)->i_acl_mode
= mode
;
1576 set_inode_flag(inode
, FI_ACL_MODE
);
1577 mark_inode_dirty_sync(inode
);
1580 static inline void f2fs_i_links_write(struct inode
*inode
, bool inc
)
1586 mark_inode_dirty_sync(inode
);
1589 static inline void f2fs_i_blocks_write(struct inode
*inode
,
1590 blkcnt_t diff
, bool add
)
1592 inode
->i_blocks
= add
? inode
->i_blocks
+ diff
:
1593 inode
->i_blocks
- diff
;
1594 mark_inode_dirty_sync(inode
);
1597 static inline void f2fs_i_size_write(struct inode
*inode
, loff_t i_size
)
1599 if (i_size_read(inode
) == i_size
)
1602 i_size_write(inode
, i_size
);
1603 mark_inode_dirty_sync(inode
);
1606 static inline void f2fs_i_depth_write(struct inode
*inode
, unsigned int depth
)
1608 F2FS_I(inode
)->i_current_depth
= depth
;
1609 mark_inode_dirty_sync(inode
);
1612 static inline void f2fs_i_xnid_write(struct inode
*inode
, nid_t xnid
)
1614 F2FS_I(inode
)->i_xattr_nid
= xnid
;
1615 mark_inode_dirty_sync(inode
);
1618 static inline void f2fs_i_pino_write(struct inode
*inode
, nid_t pino
)
1620 F2FS_I(inode
)->i_pino
= pino
;
1621 mark_inode_dirty_sync(inode
);
1624 static inline void get_inline_info(struct inode
*inode
, struct f2fs_inode
*ri
)
1626 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
1628 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1629 set_bit(FI_INLINE_XATTR
, &fi
->flags
);
1630 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1631 set_bit(FI_INLINE_DATA
, &fi
->flags
);
1632 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1633 set_bit(FI_INLINE_DENTRY
, &fi
->flags
);
1634 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1635 set_bit(FI_DATA_EXIST
, &fi
->flags
);
1636 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1637 set_bit(FI_INLINE_DOTS
, &fi
->flags
);
1640 static inline void set_raw_inline(struct inode
*inode
, struct f2fs_inode
*ri
)
1644 if (is_inode_flag_set(inode
, FI_INLINE_XATTR
))
1645 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1646 if (is_inode_flag_set(inode
, FI_INLINE_DATA
))
1647 ri
->i_inline
|= F2FS_INLINE_DATA
;
1648 if (is_inode_flag_set(inode
, FI_INLINE_DENTRY
))
1649 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1650 if (is_inode_flag_set(inode
, FI_DATA_EXIST
))
1651 ri
->i_inline
|= F2FS_DATA_EXIST
;
1652 if (is_inode_flag_set(inode
, FI_INLINE_DOTS
))
1653 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1656 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1658 return is_inode_flag_set(inode
, FI_INLINE_XATTR
);
1661 static inline unsigned int addrs_per_inode(struct inode
*inode
)
1663 if (f2fs_has_inline_xattr(inode
))
1664 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1665 return DEF_ADDRS_PER_INODE
;
1668 static inline void *inline_xattr_addr(struct page
*page
)
1670 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1671 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1672 F2FS_INLINE_XATTR_ADDRS
]);
1675 static inline int inline_xattr_size(struct inode
*inode
)
1677 if (f2fs_has_inline_xattr(inode
))
1678 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1683 static inline int f2fs_has_inline_data(struct inode
*inode
)
1685 return is_inode_flag_set(inode
, FI_INLINE_DATA
);
1688 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1690 clear_inode_flag(inode
, FI_INLINE_DATA
);
1691 clear_inode_flag(inode
, FI_DATA_EXIST
);
1694 static inline int f2fs_exist_data(struct inode
*inode
)
1696 return is_inode_flag_set(inode
, FI_DATA_EXIST
);
1699 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1701 return is_inode_flag_set(inode
, FI_INLINE_DOTS
);
1704 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1706 return is_inode_flag_set(inode
, FI_ATOMIC_FILE
);
1709 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1711 return is_inode_flag_set(inode
, FI_VOLATILE_FILE
);
1714 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1716 return is_inode_flag_set(inode
, FI_FIRST_BLOCK_WRITTEN
);
1719 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1721 return is_inode_flag_set(inode
, FI_DROP_CACHE
);
1724 static inline void *inline_data_addr(struct page
*page
)
1726 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1727 return (void *)&(ri
->i_addr
[1]);
1730 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1732 return is_inode_flag_set(inode
, FI_INLINE_DENTRY
);
1735 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1737 if (!f2fs_has_inline_dentry(dir
))
1741 static inline int is_file(struct inode
*inode
, int type
)
1743 return F2FS_I(inode
)->i_advise
& type
;
1746 static inline void set_file(struct inode
*inode
, int type
)
1748 F2FS_I(inode
)->i_advise
|= type
;
1749 mark_inode_dirty_sync(inode
);
1752 static inline void clear_file(struct inode
*inode
, int type
)
1754 F2FS_I(inode
)->i_advise
&= ~type
;
1755 mark_inode_dirty_sync(inode
);
1758 static inline int f2fs_readonly(struct super_block
*sb
)
1760 return sb
->s_flags
& MS_RDONLY
;
1763 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1765 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1768 static inline bool is_dot_dotdot(const struct qstr
*str
)
1770 if (str
->len
== 1 && str
->name
[0] == '.')
1773 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1779 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1781 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1782 is_inode_flag_set(inode
, FI_NO_EXTENT
))
1785 return S_ISREG(inode
->i_mode
);
1788 static inline void *f2fs_kmalloc(size_t size
, gfp_t flags
)
1790 #ifdef CONFIG_F2FS_FAULT_INJECTION
1791 if (time_to_inject(FAULT_KMALLOC
))
1794 return kmalloc(size
, flags
);
1797 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1801 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1803 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1807 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1811 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1813 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1817 #define get_inode_mode(i) \
1818 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
1819 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1821 /* get offset of first page in next direct node */
1822 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1823 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1824 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1825 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1830 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1831 void truncate_data_blocks(struct dnode_of_data
*);
1832 int truncate_blocks(struct inode
*, u64
, bool);
1833 int f2fs_truncate(struct inode
*, bool);
1834 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1835 int f2fs_setattr(struct dentry
*, struct iattr
*);
1836 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1837 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1838 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1839 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1844 void f2fs_set_inode_flags(struct inode
*);
1845 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1846 int try_to_free_nats(struct f2fs_sb_info
*, int);
1847 int update_inode(struct inode
*, struct page
*);
1848 int update_inode_page(struct inode
*);
1849 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1850 void f2fs_evict_inode(struct inode
*);
1851 void handle_failed_inode(struct inode
*);
1856 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1861 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1862 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1863 unsigned char get_de_type(struct f2fs_dir_entry
*);
1864 struct f2fs_dir_entry
*find_target_dentry(struct fscrypt_name
*,
1865 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1866 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1867 unsigned int, struct fscrypt_str
*);
1868 void do_make_empty_dir(struct inode
*, struct inode
*,
1869 struct f2fs_dentry_ptr
*);
1870 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1871 const struct qstr
*, struct page
*);
1872 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1873 int room_for_filename(const void *, int, int);
1874 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1875 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1877 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1878 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1879 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1880 struct page
*, struct inode
*);
1881 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1882 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1883 const struct qstr
*, f2fs_hash_t
, unsigned int);
1884 int f2fs_add_regular_entry(struct inode
*, const struct qstr
*,
1885 struct inode
*, nid_t
, umode_t
);
1886 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1888 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1890 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1891 bool f2fs_empty_dir(struct inode
*);
1893 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1895 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1896 inode
, inode
->i_ino
, inode
->i_mode
);
1902 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1903 int f2fs_sync_fs(struct super_block
*, int);
1904 extern __printf(3, 4)
1905 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1906 int sanity_check_ckpt(struct f2fs_sb_info
*sbi
);
1911 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1916 struct dnode_of_data
;
1919 bool available_free_memory(struct f2fs_sb_info
*, int);
1920 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1921 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1922 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1923 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1924 pgoff_t
get_next_page_offset(struct dnode_of_data
*, pgoff_t
);
1925 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1926 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1927 int truncate_xattr_node(struct inode
*, struct page
*);
1928 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1929 int remove_inode_page(struct inode
*);
1930 struct page
*new_inode_page(struct inode
*);
1931 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1932 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1933 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1934 struct page
*get_node_page_ra(struct page
*, int);
1935 void sync_inode_page(struct dnode_of_data
*);
1936 void move_node_page(struct page
*, int);
1937 int fsync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*,
1939 int sync_node_pages(struct f2fs_sb_info
*, struct writeback_control
*);
1940 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1941 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1942 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1943 int try_to_free_nids(struct f2fs_sb_info
*, int);
1944 void recover_inline_xattr(struct inode
*, struct page
*);
1945 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1946 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1947 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1948 struct f2fs_summary_block
*);
1949 void flush_nat_entries(struct f2fs_sb_info
*);
1950 int build_node_manager(struct f2fs_sb_info
*);
1951 void destroy_node_manager(struct f2fs_sb_info
*);
1952 int __init
create_node_manager_caches(void);
1953 void destroy_node_manager_caches(void);
1958 void register_inmem_page(struct inode
*, struct page
*);
1959 void drop_inmem_pages(struct inode
*);
1960 int commit_inmem_pages(struct inode
*);
1961 void f2fs_balance_fs(struct f2fs_sb_info
*, bool);
1962 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1963 int f2fs_issue_flush(struct f2fs_sb_info
*);
1964 int create_flush_cmd_control(struct f2fs_sb_info
*);
1965 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1966 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1967 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
1968 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1969 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1970 void release_discard_addrs(struct f2fs_sb_info
*);
1971 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1972 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1973 void allocate_new_segments(struct f2fs_sb_info
*);
1974 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1975 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1976 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1977 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1978 void write_node_page(unsigned int, struct f2fs_io_info
*);
1979 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1980 void rewrite_data_page(struct f2fs_io_info
*);
1981 void __f2fs_replace_block(struct f2fs_sb_info
*, struct f2fs_summary
*,
1982 block_t
, block_t
, bool, bool);
1983 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
1984 block_t
, block_t
, unsigned char, bool, bool);
1985 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1986 block_t
, block_t
*, struct f2fs_summary
*, int);
1987 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
, bool);
1988 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
1989 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1990 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1991 int lookup_journal_in_cursum(struct f2fs_journal
*, int, unsigned int, int);
1992 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1993 int build_segment_manager(struct f2fs_sb_info
*);
1994 void destroy_segment_manager(struct f2fs_sb_info
*);
1995 int __init
create_segment_manager_caches(void);
1996 void destroy_segment_manager_caches(void);
2001 void f2fs_stop_checkpoint(struct f2fs_sb_info
*, bool);
2002 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
2003 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
2004 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
2005 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
2006 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
2007 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
2008 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
2009 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
2010 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
2011 void release_ino_entry(struct f2fs_sb_info
*, bool);
2012 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
2013 int acquire_orphan_inode(struct f2fs_sb_info
*);
2014 void release_orphan_inode(struct f2fs_sb_info
*);
2015 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
2016 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
2017 int recover_orphan_inodes(struct f2fs_sb_info
*);
2018 int get_valid_checkpoint(struct f2fs_sb_info
*);
2019 void update_dirty_page(struct inode
*, struct page
*);
2020 void remove_dirty_inode(struct inode
*);
2021 int sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
2022 int write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
2023 void init_ino_entry_info(struct f2fs_sb_info
*);
2024 int __init
create_checkpoint_caches(void);
2025 void destroy_checkpoint_caches(void);
2030 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
2031 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info
*, struct inode
*,
2032 struct page
*, nid_t
, enum page_type
, int);
2033 void f2fs_flush_merged_bios(struct f2fs_sb_info
*);
2034 int f2fs_submit_page_bio(struct f2fs_io_info
*);
2035 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
2036 void set_data_blkaddr(struct dnode_of_data
*);
2037 void f2fs_update_data_blkaddr(struct dnode_of_data
*, block_t
);
2038 int reserve_new_blocks(struct dnode_of_data
*, blkcnt_t
);
2039 int reserve_new_block(struct dnode_of_data
*);
2040 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
2041 ssize_t
f2fs_preallocate_blocks(struct kiocb
*, struct iov_iter
*);
2042 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
2043 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
2044 struct page
*find_data_page(struct inode
*, pgoff_t
);
2045 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
2046 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
2047 int do_write_data_page(struct f2fs_io_info
*);
2048 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
2049 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
2050 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
2051 int f2fs_release_page(struct page
*, gfp_t
);
2056 int start_gc_thread(struct f2fs_sb_info
*);
2057 void stop_gc_thread(struct f2fs_sb_info
*);
2058 block_t
start_bidx_of_node(unsigned int, struct inode
*);
2059 int f2fs_gc(struct f2fs_sb_info
*, bool);
2060 void build_gc_manager(struct f2fs_sb_info
*);
2065 int recover_fsync_data(struct f2fs_sb_info
*, bool);
2066 bool space_for_roll_forward(struct f2fs_sb_info
*);
2071 #ifdef CONFIG_F2FS_STAT_FS
2072 struct f2fs_stat_info
{
2073 struct list_head stat_list
;
2074 struct f2fs_sb_info
*sbi
;
2075 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
2076 int main_area_segs
, main_area_sections
, main_area_zones
;
2077 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
2078 unsigned long long hit_total
, total_ext
;
2079 int ext_tree
, zombie_tree
, ext_node
;
2080 s64 ndirty_node
, ndirty_dent
, ndirty_meta
, ndirty_data
, inmem_pages
;
2081 unsigned int ndirty_dirs
, ndirty_files
;
2082 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
2083 int total_count
, utilization
;
2085 int inline_xattr
, inline_inode
, inline_dir
, orphans
;
2086 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
2087 unsigned int bimodal
, avg_vblocks
;
2088 int util_free
, util_valid
, util_invalid
;
2089 int rsvd_segs
, overp_segs
;
2090 int dirty_count
, node_pages
, meta_pages
;
2091 int prefree_count
, call_count
, cp_count
, bg_cp_count
;
2092 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
2093 int bg_node_segs
, bg_data_segs
;
2094 int tot_blks
, data_blks
, node_blks
;
2095 int bg_data_blks
, bg_node_blks
;
2096 int curseg
[NR_CURSEG_TYPE
];
2097 int cursec
[NR_CURSEG_TYPE
];
2098 int curzone
[NR_CURSEG_TYPE
];
2100 unsigned int segment_count
[2];
2101 unsigned int block_count
[2];
2102 unsigned int inplace_count
;
2103 unsigned long long base_mem
, cache_mem
, page_mem
;
2106 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
2108 return (struct f2fs_stat_info
*)sbi
->stat_info
;
2111 #define stat_inc_cp_count(si) ((si)->cp_count++)
2112 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2113 #define stat_inc_call_count(si) ((si)->call_count++)
2114 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2115 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2116 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2117 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2118 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2119 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2120 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2121 #define stat_inc_inline_xattr(inode) \
2123 if (f2fs_has_inline_xattr(inode)) \
2124 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2126 #define stat_dec_inline_xattr(inode) \
2128 if (f2fs_has_inline_xattr(inode)) \
2129 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2131 #define stat_inc_inline_inode(inode) \
2133 if (f2fs_has_inline_data(inode)) \
2134 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2136 #define stat_dec_inline_inode(inode) \
2138 if (f2fs_has_inline_data(inode)) \
2139 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2141 #define stat_inc_inline_dir(inode) \
2143 if (f2fs_has_inline_dentry(inode)) \
2144 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2146 #define stat_dec_inline_dir(inode) \
2148 if (f2fs_has_inline_dentry(inode)) \
2149 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2151 #define stat_inc_seg_type(sbi, curseg) \
2152 ((sbi)->segment_count[(curseg)->alloc_type]++)
2153 #define stat_inc_block_count(sbi, curseg) \
2154 ((sbi)->block_count[(curseg)->alloc_type]++)
2155 #define stat_inc_inplace_blocks(sbi) \
2156 (atomic_inc(&(sbi)->inplace_count))
2157 #define stat_inc_seg_count(sbi, type, gc_type) \
2159 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2161 if (type == SUM_TYPE_DATA) { \
2163 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2166 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2170 #define stat_inc_tot_blk_count(si, blks) \
2171 (si->tot_blks += (blks))
2173 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2175 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2176 stat_inc_tot_blk_count(si, blks); \
2177 si->data_blks += (blks); \
2178 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2181 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2183 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2184 stat_inc_tot_blk_count(si, blks); \
2185 si->node_blks += (blks); \
2186 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2189 int f2fs_build_stats(struct f2fs_sb_info
*);
2190 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2191 int __init
f2fs_create_root_stats(void);
2192 void f2fs_destroy_root_stats(void);
2194 #define stat_inc_cp_count(si)
2195 #define stat_inc_bg_cp_count(si)
2196 #define stat_inc_call_count(si)
2197 #define stat_inc_bggc_count(si)
2198 #define stat_inc_dirty_inode(sbi, type)
2199 #define stat_dec_dirty_inode(sbi, type)
2200 #define stat_inc_total_hit(sb)
2201 #define stat_inc_rbtree_node_hit(sb)
2202 #define stat_inc_largest_node_hit(sbi)
2203 #define stat_inc_cached_node_hit(sbi)
2204 #define stat_inc_inline_xattr(inode)
2205 #define stat_dec_inline_xattr(inode)
2206 #define stat_inc_inline_inode(inode)
2207 #define stat_dec_inline_inode(inode)
2208 #define stat_inc_inline_dir(inode)
2209 #define stat_dec_inline_dir(inode)
2210 #define stat_inc_seg_type(sbi, curseg)
2211 #define stat_inc_block_count(sbi, curseg)
2212 #define stat_inc_inplace_blocks(sbi)
2213 #define stat_inc_seg_count(sbi, type, gc_type)
2214 #define stat_inc_tot_blk_count(si, blks)
2215 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2216 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2218 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2219 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2220 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2221 static inline void f2fs_destroy_root_stats(void) { }
2224 extern const struct file_operations f2fs_dir_operations
;
2225 extern const struct file_operations f2fs_file_operations
;
2226 extern const struct inode_operations f2fs_file_inode_operations
;
2227 extern const struct address_space_operations f2fs_dblock_aops
;
2228 extern const struct address_space_operations f2fs_node_aops
;
2229 extern const struct address_space_operations f2fs_meta_aops
;
2230 extern const struct inode_operations f2fs_dir_inode_operations
;
2231 extern const struct inode_operations f2fs_symlink_inode_operations
;
2232 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2233 extern const struct inode_operations f2fs_special_inode_operations
;
2234 extern struct kmem_cache
*inode_entry_slab
;
2239 bool f2fs_may_inline_data(struct inode
*);
2240 bool f2fs_may_inline_dentry(struct inode
*);
2241 void read_inline_data(struct page
*, struct page
*);
2242 bool truncate_inline_inode(struct page
*, u64
);
2243 int f2fs_read_inline_data(struct inode
*, struct page
*);
2244 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2245 int f2fs_convert_inline_inode(struct inode
*);
2246 int f2fs_write_inline_data(struct inode
*, struct page
*);
2247 bool recover_inline_data(struct inode
*, struct page
*);
2248 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2249 struct fscrypt_name
*, struct page
**);
2250 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
2251 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2252 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2254 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2255 struct inode
*, struct inode
*);
2256 bool f2fs_empty_inline_dir(struct inode
*);
2257 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2258 struct fscrypt_str
*);
2259 int f2fs_inline_data_fiemap(struct inode
*,
2260 struct fiemap_extent_info
*, __u64
, __u64
);
2265 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2266 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2267 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2268 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2273 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2274 bool f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2275 unsigned int f2fs_destroy_extent_node(struct inode
*);
2276 void f2fs_destroy_extent_tree(struct inode
*);
2277 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2278 void f2fs_update_extent_cache(struct dnode_of_data
*);
2279 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2280 pgoff_t
, block_t
, unsigned int);
2281 void init_extent_cache_info(struct f2fs_sb_info
*);
2282 int __init
create_extent_cache(void);
2283 void destroy_extent_cache(void);
2288 static inline bool f2fs_encrypted_inode(struct inode
*inode
)
2290 return file_is_encrypt(inode
);
2293 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2295 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2296 file_set_encrypt(inode
);
2300 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2302 return bio
->bi_private
!= NULL
;
2305 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2307 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2310 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2312 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2313 umode_t mode
= inode
->i_mode
;
2315 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2321 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2322 #define fscrypt_set_d_op(i)
2323 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2324 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2325 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2326 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2327 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2328 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2329 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2330 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2331 #define fscrypt_process_policy fscrypt_notsupp_process_policy
2332 #define fscrypt_get_policy fscrypt_notsupp_get_policy
2333 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2334 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2335 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2336 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2337 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2338 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2339 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2340 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2341 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2342 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2343 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk