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
114 #define F2FS_MOUNT_ADAPTIVE 0x00020000
115 #define F2FS_MOUNT_LFS 0x00040000
117 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
118 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
119 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
121 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
122 typecheck(unsigned long long, b) && \
123 ((long long)((a) - (b)) > 0))
125 typedef u32 block_t
; /*
126 * should not change u32, since it is the on-disk block
127 * address format, __le32.
131 struct f2fs_mount_info
{
135 #define F2FS_FEATURE_ENCRYPT 0x0001
136 #define F2FS_FEATURE_HMSMR 0x0002
138 #define F2FS_HAS_FEATURE(sb, mask) \
139 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
140 #define F2FS_SET_FEATURE(sb, mask) \
141 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
142 #define F2FS_CLEAR_FEATURE(sb, mask) \
143 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
146 * For checkpoint manager
161 #define DEF_BATCHED_TRIM_SECTIONS 32
162 #define BATCHED_TRIM_SEGMENTS(sbi) \
163 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
164 #define BATCHED_TRIM_BLOCKS(sbi) \
165 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
166 #define DEF_CP_INTERVAL 60 /* 60 secs */
167 #define DEF_IDLE_INTERVAL 5 /* 5 secs */
178 * For CP/NAT/SIT/SSA readahead
188 /* for the list of ino */
190 ORPHAN_INO
, /* for orphan ino list */
191 APPEND_INO
, /* for append ino list */
192 UPDATE_INO
, /* for update ino list */
193 MAX_INO_ENTRY
, /* max. list */
197 struct list_head list
; /* list head */
198 nid_t ino
; /* inode number */
201 /* for the list of inodes to be GCed */
203 struct list_head list
; /* list head */
204 struct inode
*inode
; /* vfs inode pointer */
207 /* for the list of blockaddresses to be discarded */
208 struct discard_entry
{
209 struct list_head list
; /* list head */
210 block_t blkaddr
; /* block address to be discarded */
211 int len
; /* # of consecutive blocks of the discard */
214 /* for the list of fsync inodes, used only during recovery */
215 struct fsync_inode_entry
{
216 struct list_head list
; /* list head */
217 struct inode
*inode
; /* vfs inode pointer */
218 block_t blkaddr
; /* block address locating the last fsync */
219 block_t last_dentry
; /* block address locating the last dentry */
222 #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
223 #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
225 #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
226 #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
227 #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
228 #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
230 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
231 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
233 static inline int update_nats_in_cursum(struct f2fs_journal
*journal
, int i
)
235 int before
= nats_in_cursum(journal
);
236 journal
->n_nats
= cpu_to_le16(before
+ i
);
240 static inline int update_sits_in_cursum(struct f2fs_journal
*journal
, int i
)
242 int before
= sits_in_cursum(journal
);
243 journal
->n_sits
= cpu_to_le16(before
+ i
);
247 static inline bool __has_cursum_space(struct f2fs_journal
*journal
,
250 if (type
== NAT_JOURNAL
)
251 return size
<= MAX_NAT_JENTRIES(journal
);
252 return size
<= MAX_SIT_JENTRIES(journal
);
258 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
259 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
260 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
262 #define F2FS_IOCTL_MAGIC 0xf5
263 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
264 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
265 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
266 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
267 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
268 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
269 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
270 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
271 #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
272 struct f2fs_move_range)
274 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
275 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
276 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
279 * should be same as XFS_IOC_GOINGDOWN.
280 * Flags for going down operation used by FS_IOC_GOINGDOWN
282 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
283 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
284 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
285 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
286 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
288 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
290 * ioctl commands in 32 bit emulation
292 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
293 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
294 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
297 struct f2fs_defragment
{
302 struct f2fs_move_range
{
303 u32 dst_fd
; /* destination fd */
304 u64 pos_in
; /* start position in src_fd */
305 u64 pos_out
; /* start position in dst_fd */
306 u64 len
; /* size to move */
310 * For INODE and NODE manager
312 /* for directory operations */
313 struct f2fs_dentry_ptr
{
316 struct f2fs_dir_entry
*dentry
;
317 __u8 (*filename
)[F2FS_SLOT_LEN
];
321 static inline void make_dentry_ptr(struct inode
*inode
,
322 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
327 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
328 d
->max
= NR_DENTRY_IN_BLOCK
;
329 d
->bitmap
= &t
->dentry_bitmap
;
330 d
->dentry
= t
->dentry
;
331 d
->filename
= t
->filename
;
333 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
334 d
->max
= NR_INLINE_DENTRY
;
335 d
->bitmap
= &t
->dentry_bitmap
;
336 d
->dentry
= t
->dentry
;
337 d
->filename
= t
->filename
;
342 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
343 * as its node offset to distinguish from index node blocks.
344 * But some bits are used to mark the node block.
346 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
349 ALLOC_NODE
, /* allocate a new node page if needed */
350 LOOKUP_NODE
, /* look up a node without readahead */
352 * look up a node with readahead called
357 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
359 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
361 /* vector size for gang look-up from extent cache that consists of radix tree */
362 #define EXT_TREE_VEC_SIZE 64
364 /* for in-memory extent cache entry */
365 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
367 /* number of extent info in extent cache we try to shrink */
368 #define EXTENT_CACHE_SHRINK_NUMBER 128
371 unsigned int fofs
; /* start offset in a file */
372 u32 blk
; /* start block address of the extent */
373 unsigned int len
; /* length of the extent */
377 struct rb_node rb_node
; /* rb node located in rb-tree */
378 struct list_head list
; /* node in global extent list of sbi */
379 struct extent_info ei
; /* extent info */
380 struct extent_tree
*et
; /* extent tree pointer */
384 nid_t ino
; /* inode number */
385 struct rb_root root
; /* root of extent info rb-tree */
386 struct extent_node
*cached_en
; /* recently accessed extent node */
387 struct extent_info largest
; /* largested extent info */
388 struct list_head list
; /* to be used by sbi->zombie_list */
389 rwlock_t lock
; /* protect extent info rb-tree */
390 atomic_t node_cnt
; /* # of extent node in rb-tree*/
394 * This structure is taken from ext4_map_blocks.
396 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
398 #define F2FS_MAP_NEW (1 << BH_New)
399 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
400 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
401 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
404 struct f2fs_map_blocks
{
408 unsigned int m_flags
;
409 pgoff_t
*m_next_pgofs
; /* point next possible non-hole pgofs */
412 /* for flag in get_data_block */
413 #define F2FS_GET_BLOCK_READ 0
414 #define F2FS_GET_BLOCK_DIO 1
415 #define F2FS_GET_BLOCK_FIEMAP 2
416 #define F2FS_GET_BLOCK_BMAP 3
417 #define F2FS_GET_BLOCK_PRE_DIO 4
418 #define F2FS_GET_BLOCK_PRE_AIO 5
421 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
423 #define FADVISE_COLD_BIT 0x01
424 #define FADVISE_LOST_PINO_BIT 0x02
425 #define FADVISE_ENCRYPT_BIT 0x04
426 #define FADVISE_ENC_NAME_BIT 0x08
428 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
429 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
430 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
431 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
432 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
433 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
434 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
435 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
436 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
437 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
438 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
440 #define DEF_DIR_LEVEL 0
442 struct f2fs_inode_info
{
443 struct inode vfs_inode
; /* serve a vfs inode */
444 unsigned long i_flags
; /* keep an inode flags for ioctl */
445 unsigned char i_advise
; /* use to give file attribute hints */
446 unsigned char i_dir_level
; /* use for dentry level for large dir */
447 unsigned int i_current_depth
; /* use only in directory structure */
448 unsigned int i_pino
; /* parent inode number */
449 umode_t i_acl_mode
; /* keep file acl mode temporarily */
451 /* Use below internally in f2fs*/
452 unsigned long flags
; /* use to pass per-file flags */
453 struct rw_semaphore i_sem
; /* protect fi info */
454 struct percpu_counter dirty_pages
; /* # of dirty pages */
455 f2fs_hash_t chash
; /* hash value of given file name */
456 unsigned int clevel
; /* maximum level of given file name */
457 nid_t i_xattr_nid
; /* node id that contains xattrs */
458 unsigned long long xattr_ver
; /* cp version of xattr modification */
459 loff_t last_disk_size
; /* lastly written file size */
461 struct list_head dirty_list
; /* dirty list for dirs and files */
462 struct list_head gdirty_list
; /* linked in global dirty list */
463 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
464 struct mutex inmem_lock
; /* lock for inmemory pages */
465 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
466 struct rw_semaphore dio_rwsem
[2];/* avoid racing between dio and gc */
469 static inline void get_extent_info(struct extent_info
*ext
,
470 struct f2fs_extent
*i_ext
)
472 ext
->fofs
= le32_to_cpu(i_ext
->fofs
);
473 ext
->blk
= le32_to_cpu(i_ext
->blk
);
474 ext
->len
= le32_to_cpu(i_ext
->len
);
477 static inline void set_raw_extent(struct extent_info
*ext
,
478 struct f2fs_extent
*i_ext
)
480 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
481 i_ext
->blk
= cpu_to_le32(ext
->blk
);
482 i_ext
->len
= cpu_to_le32(ext
->len
);
485 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
486 u32 blk
, unsigned int len
)
493 static inline bool __is_extent_same(struct extent_info
*ei1
,
494 struct extent_info
*ei2
)
496 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
497 ei1
->len
== ei2
->len
);
500 static inline bool __is_extent_mergeable(struct extent_info
*back
,
501 struct extent_info
*front
)
503 return (back
->fofs
+ back
->len
== front
->fofs
&&
504 back
->blk
+ back
->len
== front
->blk
);
507 static inline bool __is_back_mergeable(struct extent_info
*cur
,
508 struct extent_info
*back
)
510 return __is_extent_mergeable(back
, cur
);
513 static inline bool __is_front_mergeable(struct extent_info
*cur
,
514 struct extent_info
*front
)
516 return __is_extent_mergeable(cur
, front
);
519 extern void f2fs_mark_inode_dirty_sync(struct inode
*);
520 static inline void __try_update_largest_extent(struct inode
*inode
,
521 struct extent_tree
*et
, struct extent_node
*en
)
523 if (en
->ei
.len
> et
->largest
.len
) {
524 et
->largest
= en
->ei
;
525 f2fs_mark_inode_dirty_sync(inode
);
529 struct f2fs_nm_info
{
530 block_t nat_blkaddr
; /* base disk address of NAT */
531 nid_t max_nid
; /* maximum possible node ids */
532 nid_t available_nids
; /* maximum available node ids */
533 nid_t next_scan_nid
; /* the next nid to be scanned */
534 unsigned int ram_thresh
; /* control the memory footprint */
535 unsigned int ra_nid_pages
; /* # of nid pages to be readaheaded */
536 unsigned int dirty_nats_ratio
; /* control dirty nats ratio threshold */
538 /* NAT cache management */
539 struct radix_tree_root nat_root
;/* root of the nat entry cache */
540 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
541 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
542 struct list_head nat_entries
; /* cached nat entry list (clean) */
543 unsigned int nat_cnt
; /* the # of cached nat entries */
544 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
546 /* free node ids management */
547 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
548 struct list_head free_nid_list
; /* a list for free nids */
549 spinlock_t free_nid_list_lock
; /* protect free nid list */
550 unsigned int fcnt
; /* the number of free node id */
551 struct mutex build_lock
; /* lock for build free nids */
554 char *nat_bitmap
; /* NAT bitmap pointer */
555 int bitmap_size
; /* bitmap size */
559 * this structure is used as one of function parameters.
560 * all the information are dedicated to a given direct node block determined
561 * by the data offset in a file.
563 struct dnode_of_data
{
564 struct inode
*inode
; /* vfs inode pointer */
565 struct page
*inode_page
; /* its inode page, NULL is possible */
566 struct page
*node_page
; /* cached direct node page */
567 nid_t nid
; /* node id of the direct node block */
568 unsigned int ofs_in_node
; /* data offset in the node page */
569 bool inode_page_locked
; /* inode page is locked or not */
570 bool node_changed
; /* is node block changed */
571 char cur_level
; /* level of hole node page */
572 char max_level
; /* level of current page located */
573 block_t data_blkaddr
; /* block address of the node block */
576 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
577 struct page
*ipage
, struct page
*npage
, nid_t nid
)
579 memset(dn
, 0, sizeof(*dn
));
581 dn
->inode_page
= ipage
;
582 dn
->node_page
= npage
;
589 * By default, there are 6 active log areas across the whole main area.
590 * When considering hot and cold data separation to reduce cleaning overhead,
591 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
593 * In the current design, you should not change the numbers intentionally.
594 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
595 * logs individually according to the underlying devices. (default: 6)
596 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
597 * data and 8 for node logs.
599 #define NR_CURSEG_DATA_TYPE (3)
600 #define NR_CURSEG_NODE_TYPE (3)
601 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
604 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
605 CURSEG_WARM_DATA
, /* data blocks */
606 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
607 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
608 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
609 CURSEG_COLD_NODE
, /* indirect node blocks */
611 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
615 struct completion wait
;
616 struct llist_node llnode
;
620 struct flush_cmd_control
{
621 struct task_struct
*f2fs_issue_flush
; /* flush thread */
622 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
623 atomic_t submit_flush
; /* # of issued flushes */
624 struct llist_head issue_list
; /* list for command issue */
625 struct llist_node
*dispatch_list
; /* list for command dispatch */
628 struct f2fs_sm_info
{
629 struct sit_info
*sit_info
; /* whole segment information */
630 struct free_segmap_info
*free_info
; /* free segment information */
631 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
632 struct curseg_info
*curseg_array
; /* active segment information */
634 block_t seg0_blkaddr
; /* block address of 0'th segment */
635 block_t main_blkaddr
; /* start block address of main area */
636 block_t ssa_blkaddr
; /* start block address of SSA area */
638 unsigned int segment_count
; /* total # of segments */
639 unsigned int main_segments
; /* # of segments in main area */
640 unsigned int reserved_segments
; /* # of reserved segments */
641 unsigned int ovp_segments
; /* # of overprovision segments */
643 /* a threshold to reclaim prefree segments */
644 unsigned int rec_prefree_segments
;
646 /* for small discard management */
647 struct list_head discard_list
; /* 4KB discard list */
648 int nr_discards
; /* # of discards in the list */
649 int max_discards
; /* max. discards to be issued */
651 /* for batched trimming */
652 unsigned int trim_sections
; /* # of sections to trim */
654 struct list_head sit_entry_set
; /* sit entry set list */
656 unsigned int ipu_policy
; /* in-place-update policy */
657 unsigned int min_ipu_util
; /* in-place-update threshold */
658 unsigned int min_fsync_blocks
; /* threshold for fsync */
660 /* for flush command control */
661 struct flush_cmd_control
*cmd_control_info
;
669 * COUNT_TYPE for monitoring
671 * f2fs monitors the number of several block types such as on-writeback,
672 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
685 * The below are the page types of bios used in submit_bio().
686 * The available types are:
687 * DATA User data pages. It operates as async mode.
688 * NODE Node pages. It operates as async mode.
689 * META FS metadata pages such as SIT, NAT, CP.
690 * NR_PAGE_TYPE The number of page types.
691 * META_FLUSH Make sure the previous pages are written
692 * with waiting the bio's completion
693 * ... Only can be used with META.
695 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
702 INMEM
, /* the below types are used by tracepoints only. */
709 struct f2fs_io_info
{
710 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
711 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
712 int op
; /* contains REQ_OP_ */
713 int op_flags
; /* rq_flag_bits */
714 block_t new_blkaddr
; /* new block address to be written */
715 block_t old_blkaddr
; /* old block address before Cow */
716 struct page
*page
; /* page to be written */
717 struct page
*encrypted_page
; /* encrypted page */
720 #define is_read_io(rw) (rw == READ)
721 struct f2fs_bio_info
{
722 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
723 struct bio
*bio
; /* bios to merge */
724 sector_t last_block_in_bio
; /* last block number */
725 struct f2fs_io_info fio
; /* store buffered io info. */
726 struct rw_semaphore io_rwsem
; /* blocking op for bio */
730 DIR_INODE
, /* for dirty dir inode */
731 FILE_INODE
, /* for dirty regular/symlink inode */
732 DIRTY_META
, /* for all dirtied inode metadata */
736 /* for inner inode cache management */
737 struct inode_management
{
738 struct radix_tree_root ino_root
; /* ino entry array */
739 spinlock_t ino_lock
; /* for ino entry lock */
740 struct list_head ino_list
; /* inode list head */
741 unsigned long ino_num
; /* number of entries */
744 /* For s_flag in struct f2fs_sb_info */
746 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
747 SBI_IS_CLOSE
, /* specify unmounting */
748 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
749 SBI_POR_DOING
, /* recovery is doing or not */
750 SBI_NEED_SB_WRITE
, /* need to recover superblock */
759 #ifdef CONFIG_F2FS_FS_ENCRYPTION
760 #define F2FS_KEY_DESC_PREFIX "f2fs:"
761 #define F2FS_KEY_DESC_PREFIX_SIZE 5
763 struct f2fs_sb_info
{
764 struct super_block
*sb
; /* pointer to VFS super block */
765 struct proc_dir_entry
*s_proc
; /* proc entry */
766 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
767 int valid_super_block
; /* valid super block no */
768 int s_flag
; /* flags for sbi */
770 #ifdef CONFIG_F2FS_FS_ENCRYPTION
771 u8 key_prefix
[F2FS_KEY_DESC_PREFIX_SIZE
];
774 /* for node-related operations */
775 struct f2fs_nm_info
*nm_info
; /* node manager */
776 struct inode
*node_inode
; /* cache node blocks */
778 /* for segment-related operations */
779 struct f2fs_sm_info
*sm_info
; /* segment manager */
781 /* for bio operations */
782 struct f2fs_bio_info read_io
; /* for read bios */
783 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
784 struct mutex wio_mutex
[NODE
+ 1]; /* bio ordering for NODE/DATA */
787 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
788 struct inode
*meta_inode
; /* cache meta blocks */
789 struct mutex cp_mutex
; /* checkpoint procedure lock */
790 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
791 struct rw_semaphore node_write
; /* locking node writes */
792 wait_queue_head_t cp_wait
;
793 unsigned long last_time
[MAX_TIME
]; /* to store time in jiffies */
794 long interval_time
[MAX_TIME
]; /* to store thresholds */
796 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
798 /* for orphan inode, use 0'th array */
799 unsigned int max_orphans
; /* max orphan inodes */
801 /* for inode management */
802 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
803 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
805 /* for extent tree cache */
806 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
807 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
808 struct list_head extent_list
; /* lru list for shrinker */
809 spinlock_t extent_lock
; /* locking extent lru list */
810 atomic_t total_ext_tree
; /* extent tree count */
811 struct list_head zombie_list
; /* extent zombie tree list */
812 atomic_t total_zombie_tree
; /* extent zombie tree count */
813 atomic_t total_ext_node
; /* extent info count */
815 /* basic filesystem units */
816 unsigned int log_sectors_per_block
; /* log2 sectors per block */
817 unsigned int log_blocksize
; /* log2 block size */
818 unsigned int blocksize
; /* block size */
819 unsigned int root_ino_num
; /* root inode number*/
820 unsigned int node_ino_num
; /* node inode number*/
821 unsigned int meta_ino_num
; /* meta inode number*/
822 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
823 unsigned int blocks_per_seg
; /* blocks per segment */
824 unsigned int segs_per_sec
; /* segments per section */
825 unsigned int secs_per_zone
; /* sections per zone */
826 unsigned int total_sections
; /* total section count */
827 unsigned int total_node_count
; /* total node block count */
828 unsigned int total_valid_node_count
; /* valid node block count */
829 loff_t max_file_blocks
; /* max block index of file */
830 int active_logs
; /* # of active logs */
831 int dir_level
; /* directory level */
833 block_t user_block_count
; /* # of user blocks */
834 block_t total_valid_block_count
; /* # of valid blocks */
835 block_t discard_blks
; /* discard command candidats */
836 block_t last_valid_block_count
; /* for recovery */
837 u32 s_next_generation
; /* for NFS support */
838 atomic_t nr_wb_bios
; /* # of writeback bios */
840 /* # of pages, see count_type */
841 struct percpu_counter nr_pages
[NR_COUNT_TYPE
];
842 /* # of allocated blocks */
843 struct percpu_counter alloc_valid_block_count
;
845 /* valid inode count */
846 struct percpu_counter total_valid_inode_count
;
848 struct f2fs_mount_info mount_opt
; /* mount options */
850 /* for cleaning operations */
851 struct mutex gc_mutex
; /* mutex for GC */
852 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
853 unsigned int cur_victim_sec
; /* current victim section num */
855 /* maximum # of trials to find a victim segment for SSR and GC */
856 unsigned int max_victim_search
;
859 * for stat information.
860 * one is for the LFS mode, and the other is for the SSR mode.
862 #ifdef CONFIG_F2FS_STAT_FS
863 struct f2fs_stat_info
*stat_info
; /* FS status information */
864 unsigned int segment_count
[2]; /* # of allocated segments */
865 unsigned int block_count
[2]; /* # of allocated blocks */
866 atomic_t inplace_count
; /* # of inplace update */
867 atomic64_t total_hit_ext
; /* # of lookup extent cache */
868 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
869 atomic64_t read_hit_largest
; /* # of hit largest extent node */
870 atomic64_t read_hit_cached
; /* # of hit cached extent node */
871 atomic_t inline_xattr
; /* # of inline_xattr inodes */
872 atomic_t inline_inode
; /* # of inline_data inodes */
873 atomic_t inline_dir
; /* # of inline_dentry inodes */
874 int bg_gc
; /* background gc calls */
875 unsigned int ndirty_inode
[NR_INODE_TYPE
]; /* # of dirty inodes */
877 unsigned int last_victim
[2]; /* last victim segment # */
878 spinlock_t stat_lock
; /* lock for stat operations */
880 /* For sysfs suppport */
881 struct kobject s_kobj
;
882 struct completion s_kobj_unregister
;
884 /* For shrinker support */
885 struct list_head s_list
;
886 struct mutex umount_mutex
;
887 unsigned int shrinker_run_no
;
889 /* For write statistics */
890 u64 sectors_written_start
;
893 /* Reference to checksum algorithm driver via cryptoapi */
894 struct crypto_shash
*s_chksum_driver
;
897 /* For write statistics. Suppose sector size is 512 bytes,
898 * and the return value is in kbytes. s is of struct f2fs_sb_info.
900 #define BD_PART_WRITTEN(s) \
901 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
902 s->sectors_written_start) >> 1)
904 static inline void f2fs_update_time(struct f2fs_sb_info
*sbi
, int type
)
906 sbi
->last_time
[type
] = jiffies
;
909 static inline bool f2fs_time_over(struct f2fs_sb_info
*sbi
, int type
)
911 struct timespec ts
= {sbi
->interval_time
[type
], 0};
912 unsigned long interval
= timespec_to_jiffies(&ts
);
914 return time_after(jiffies
, sbi
->last_time
[type
] + interval
);
917 static inline bool is_idle(struct f2fs_sb_info
*sbi
)
919 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
920 struct request_queue
*q
= bdev_get_queue(bdev
);
921 struct request_list
*rl
= &q
->root_rl
;
923 if (rl
->count
[BLK_RW_SYNC
] || rl
->count
[BLK_RW_ASYNC
])
926 return f2fs_time_over(sbi
, REQ_TIME
);
932 static inline u32
f2fs_crc32(struct f2fs_sb_info
*sbi
, const void *address
,
935 SHASH_DESC_ON_STACK(shash
, sbi
->s_chksum_driver
);
936 u32
*ctx
= (u32
*)shash_desc_ctx(shash
);
939 shash
->tfm
= sbi
->s_chksum_driver
;
941 *ctx
= F2FS_SUPER_MAGIC
;
943 err
= crypto_shash_update(shash
, address
, length
);
949 static inline bool f2fs_crc_valid(struct f2fs_sb_info
*sbi
, __u32 blk_crc
,
950 void *buf
, size_t buf_size
)
952 return f2fs_crc32(sbi
, buf
, buf_size
) == blk_crc
;
955 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
957 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
960 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
962 return sb
->s_fs_info
;
965 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
967 return F2FS_SB(inode
->i_sb
);
970 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
972 return F2FS_I_SB(mapping
->host
);
975 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
977 return F2FS_M_SB(page
->mapping
);
980 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
982 return (struct f2fs_super_block
*)(sbi
->raw_super
);
985 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
987 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
990 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
992 return (struct f2fs_node
*)page_address(page
);
995 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
997 return &((struct f2fs_node
*)page_address(page
))->i
;
1000 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
1002 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
1005 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
1007 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
1010 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
1012 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
1015 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
1017 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
1020 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
1022 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
1025 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
1027 return sbi
->meta_inode
->i_mapping
;
1030 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
1032 return sbi
->node_inode
->i_mapping
;
1035 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
1037 return sbi
->s_flag
& (0x01 << type
);
1040 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
1042 sbi
->s_flag
|= (0x01 << type
);
1045 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
1047 sbi
->s_flag
&= ~(0x01 << type
);
1050 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
1052 return le64_to_cpu(cp
->checkpoint_ver
);
1055 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1057 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1058 return ckpt_flags
& f
;
1061 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1063 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1065 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1068 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1070 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1072 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1075 static inline bool f2fs_discard_en(struct f2fs_sb_info
*sbi
)
1077 struct request_queue
*q
= bdev_get_queue(sbi
->sb
->s_bdev
);
1079 return blk_queue_discard(q
);
1082 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
1084 down_read(&sbi
->cp_rwsem
);
1087 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
1089 up_read(&sbi
->cp_rwsem
);
1092 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
1094 down_write(&sbi
->cp_rwsem
);
1097 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
1099 up_write(&sbi
->cp_rwsem
);
1102 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
1104 int reason
= CP_SYNC
;
1106 if (test_opt(sbi
, FASTBOOT
))
1107 reason
= CP_FASTBOOT
;
1108 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
1113 static inline bool __remain_node_summaries(int reason
)
1115 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
1118 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
1120 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
1121 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1125 * Check whether the given nid is within node id range.
1127 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1129 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1131 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1136 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1139 * Check whether the inode has blocks or not
1141 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1143 if (F2FS_I(inode
)->i_xattr_nid
)
1144 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1146 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1149 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1151 return ofs
== XATTR_NODE_OFFSET
;
1154 static inline void f2fs_i_blocks_write(struct inode
*, blkcnt_t
, bool);
1155 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1156 struct inode
*inode
, blkcnt_t
*count
)
1160 #ifdef CONFIG_F2FS_FAULT_INJECTION
1161 if (time_to_inject(FAULT_BLOCK
))
1165 * let's increase this in prior to actual block count change in order
1166 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1168 percpu_counter_add(&sbi
->alloc_valid_block_count
, (*count
));
1170 spin_lock(&sbi
->stat_lock
);
1171 sbi
->total_valid_block_count
+= (block_t
)(*count
);
1172 if (unlikely(sbi
->total_valid_block_count
> sbi
->user_block_count
)) {
1173 diff
= sbi
->total_valid_block_count
- sbi
->user_block_count
;
1175 sbi
->total_valid_block_count
= sbi
->user_block_count
;
1177 spin_unlock(&sbi
->stat_lock
);
1178 percpu_counter_sub(&sbi
->alloc_valid_block_count
, diff
);
1182 spin_unlock(&sbi
->stat_lock
);
1184 f2fs_i_blocks_write(inode
, *count
, true);
1188 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1189 struct inode
*inode
,
1192 spin_lock(&sbi
->stat_lock
);
1193 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1194 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1195 sbi
->total_valid_block_count
-= (block_t
)count
;
1196 spin_unlock(&sbi
->stat_lock
);
1197 f2fs_i_blocks_write(inode
, count
, false);
1200 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1202 percpu_counter_inc(&sbi
->nr_pages
[count_type
]);
1203 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1206 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1208 percpu_counter_inc(&F2FS_I(inode
)->dirty_pages
);
1209 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1210 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1213 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1215 percpu_counter_dec(&sbi
->nr_pages
[count_type
]);
1218 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1220 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1221 !S_ISLNK(inode
->i_mode
))
1224 percpu_counter_dec(&F2FS_I(inode
)->dirty_pages
);
1225 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1226 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1229 static inline s64
get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1231 return percpu_counter_sum_positive(&sbi
->nr_pages
[count_type
]);
1234 static inline s64
get_dirty_pages(struct inode
*inode
)
1236 return percpu_counter_sum_positive(&F2FS_I(inode
)->dirty_pages
);
1239 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1241 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1242 unsigned int segs
= (get_pages(sbi
, block_type
) + pages_per_sec
- 1) >>
1243 sbi
->log_blocks_per_seg
;
1245 return segs
/ sbi
->segs_per_sec
;
1248 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1250 return sbi
->total_valid_block_count
;
1253 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1255 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1257 /* return NAT or SIT bitmap */
1258 if (flag
== NAT_BITMAP
)
1259 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1260 else if (flag
== SIT_BITMAP
)
1261 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1266 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1268 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1271 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1273 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1276 if (__cp_payload(sbi
) > 0) {
1277 if (flag
== NAT_BITMAP
)
1278 return &ckpt
->sit_nat_version_bitmap
;
1280 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1282 offset
= (flag
== NAT_BITMAP
) ?
1283 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1284 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1288 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1291 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1292 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1294 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1297 * odd numbered checkpoint should at cp segment 0
1298 * and even segment must be at cp segment 1
1300 if (!(ckpt_version
& 1))
1301 start_addr
+= sbi
->blocks_per_seg
;
1306 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1308 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1311 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1312 struct inode
*inode
)
1314 block_t valid_block_count
;
1315 unsigned int valid_node_count
;
1317 spin_lock(&sbi
->stat_lock
);
1319 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1320 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1321 spin_unlock(&sbi
->stat_lock
);
1325 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1326 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1327 spin_unlock(&sbi
->stat_lock
);
1332 f2fs_i_blocks_write(inode
, 1, true);
1334 sbi
->total_valid_node_count
++;
1335 sbi
->total_valid_block_count
++;
1336 spin_unlock(&sbi
->stat_lock
);
1338 percpu_counter_inc(&sbi
->alloc_valid_block_count
);
1342 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1343 struct inode
*inode
)
1345 spin_lock(&sbi
->stat_lock
);
1347 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1348 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1349 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1351 f2fs_i_blocks_write(inode
, 1, false);
1352 sbi
->total_valid_node_count
--;
1353 sbi
->total_valid_block_count
--;
1355 spin_unlock(&sbi
->stat_lock
);
1358 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1360 return sbi
->total_valid_node_count
;
1363 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1365 percpu_counter_inc(&sbi
->total_valid_inode_count
);
1368 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1370 percpu_counter_dec(&sbi
->total_valid_inode_count
);
1373 static inline s64
valid_inode_count(struct f2fs_sb_info
*sbi
)
1375 return percpu_counter_sum_positive(&sbi
->total_valid_inode_count
);
1378 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1379 pgoff_t index
, bool for_write
)
1381 #ifdef CONFIG_F2FS_FAULT_INJECTION
1382 struct page
*page
= find_lock_page(mapping
, index
);
1386 if (time_to_inject(FAULT_PAGE_ALLOC
))
1390 return grab_cache_page(mapping
, index
);
1391 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1394 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1396 char *src_kaddr
= kmap(src
);
1397 char *dst_kaddr
= kmap(dst
);
1399 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1404 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1410 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1416 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1419 f2fs_put_page(dn
->node_page
, 1);
1420 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1421 f2fs_put_page(dn
->inode_page
, 0);
1422 dn
->node_page
= NULL
;
1423 dn
->inode_page
= NULL
;
1426 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1429 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1432 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1437 entry
= kmem_cache_alloc(cachep
, flags
);
1439 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1443 static inline struct bio
*f2fs_bio_alloc(int npages
)
1447 /* No failure on bio allocation */
1448 bio
= bio_alloc(GFP_NOIO
, npages
);
1450 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1454 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1455 unsigned long index
, void *item
)
1457 while (radix_tree_insert(root
, index
, item
))
1461 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1463 static inline bool IS_INODE(struct page
*page
)
1465 struct f2fs_node
*p
= F2FS_NODE(page
);
1466 return RAW_IS_INODE(p
);
1469 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1471 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1474 static inline block_t
datablock_addr(struct page
*node_page
,
1475 unsigned int offset
)
1477 struct f2fs_node
*raw_node
;
1479 raw_node
= F2FS_NODE(node_page
);
1480 addr_array
= blkaddr_in_node(raw_node
);
1481 return le32_to_cpu(addr_array
[offset
]);
1484 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1489 mask
= 1 << (7 - (nr
& 0x07));
1490 return mask
& *addr
;
1493 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1498 mask
= 1 << (7 - (nr
& 0x07));
1502 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1507 mask
= 1 << (7 - (nr
& 0x07));
1511 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1517 mask
= 1 << (7 - (nr
& 0x07));
1523 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1529 mask
= 1 << (7 - (nr
& 0x07));
1535 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1540 mask
= 1 << (7 - (nr
& 0x07));
1544 /* used for f2fs_inode_info->flags */
1546 FI_NEW_INODE
, /* indicate newly allocated inode */
1547 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1548 FI_AUTO_RECOVER
, /* indicate inode is recoverable */
1549 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1550 FI_INC_LINK
, /* need to increment i_nlink */
1551 FI_ACL_MODE
, /* indicate acl mode */
1552 FI_NO_ALLOC
, /* should not allocate any blocks */
1553 FI_FREE_NID
, /* free allocated nide */
1554 FI_NO_EXTENT
, /* not to use the extent cache */
1555 FI_INLINE_XATTR
, /* used for inline xattr */
1556 FI_INLINE_DATA
, /* used for inline data*/
1557 FI_INLINE_DENTRY
, /* used for inline dentry */
1558 FI_APPEND_WRITE
, /* inode has appended data */
1559 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1560 FI_NEED_IPU
, /* used for ipu per file */
1561 FI_ATOMIC_FILE
, /* indicate atomic file */
1562 FI_VOLATILE_FILE
, /* indicate volatile file */
1563 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1564 FI_DROP_CACHE
, /* drop dirty page cache */
1565 FI_DATA_EXIST
, /* indicate data exists */
1566 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1567 FI_DO_DEFRAG
, /* indicate defragment is running */
1568 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1571 static inline void __mark_inode_dirty_flag(struct inode
*inode
,
1575 case FI_INLINE_XATTR
:
1576 case FI_INLINE_DATA
:
1577 case FI_INLINE_DENTRY
:
1581 case FI_INLINE_DOTS
:
1582 f2fs_mark_inode_dirty_sync(inode
);
1586 static inline void set_inode_flag(struct inode
*inode
, int flag
)
1588 if (!test_bit(flag
, &F2FS_I(inode
)->flags
))
1589 set_bit(flag
, &F2FS_I(inode
)->flags
);
1590 __mark_inode_dirty_flag(inode
, flag
, true);
1593 static inline int is_inode_flag_set(struct inode
*inode
, int flag
)
1595 return test_bit(flag
, &F2FS_I(inode
)->flags
);
1598 static inline void clear_inode_flag(struct inode
*inode
, int flag
)
1600 if (test_bit(flag
, &F2FS_I(inode
)->flags
))
1601 clear_bit(flag
, &F2FS_I(inode
)->flags
);
1602 __mark_inode_dirty_flag(inode
, flag
, false);
1605 static inline void set_acl_inode(struct inode
*inode
, umode_t mode
)
1607 F2FS_I(inode
)->i_acl_mode
= mode
;
1608 set_inode_flag(inode
, FI_ACL_MODE
);
1609 f2fs_mark_inode_dirty_sync(inode
);
1612 static inline void f2fs_i_links_write(struct inode
*inode
, bool inc
)
1618 f2fs_mark_inode_dirty_sync(inode
);
1621 static inline void f2fs_i_blocks_write(struct inode
*inode
,
1622 blkcnt_t diff
, bool add
)
1624 bool clean
= !is_inode_flag_set(inode
, FI_DIRTY_INODE
);
1625 bool recover
= is_inode_flag_set(inode
, FI_AUTO_RECOVER
);
1627 inode
->i_blocks
= add
? inode
->i_blocks
+ diff
:
1628 inode
->i_blocks
- diff
;
1629 f2fs_mark_inode_dirty_sync(inode
);
1630 if (clean
|| recover
)
1631 set_inode_flag(inode
, FI_AUTO_RECOVER
);
1634 static inline void f2fs_i_size_write(struct inode
*inode
, loff_t i_size
)
1636 bool clean
= !is_inode_flag_set(inode
, FI_DIRTY_INODE
);
1637 bool recover
= is_inode_flag_set(inode
, FI_AUTO_RECOVER
);
1639 if (i_size_read(inode
) == i_size
)
1642 i_size_write(inode
, i_size
);
1643 f2fs_mark_inode_dirty_sync(inode
);
1644 if (clean
|| recover
)
1645 set_inode_flag(inode
, FI_AUTO_RECOVER
);
1648 static inline bool f2fs_skip_inode_update(struct inode
*inode
)
1650 if (!is_inode_flag_set(inode
, FI_AUTO_RECOVER
))
1652 return F2FS_I(inode
)->last_disk_size
== i_size_read(inode
);
1655 static inline void f2fs_i_depth_write(struct inode
*inode
, unsigned int depth
)
1657 F2FS_I(inode
)->i_current_depth
= depth
;
1658 f2fs_mark_inode_dirty_sync(inode
);
1661 static inline void f2fs_i_xnid_write(struct inode
*inode
, nid_t xnid
)
1663 F2FS_I(inode
)->i_xattr_nid
= xnid
;
1664 f2fs_mark_inode_dirty_sync(inode
);
1667 static inline void f2fs_i_pino_write(struct inode
*inode
, nid_t pino
)
1669 F2FS_I(inode
)->i_pino
= pino
;
1670 f2fs_mark_inode_dirty_sync(inode
);
1673 static inline void get_inline_info(struct inode
*inode
, struct f2fs_inode
*ri
)
1675 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
1677 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1678 set_bit(FI_INLINE_XATTR
, &fi
->flags
);
1679 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1680 set_bit(FI_INLINE_DATA
, &fi
->flags
);
1681 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1682 set_bit(FI_INLINE_DENTRY
, &fi
->flags
);
1683 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1684 set_bit(FI_DATA_EXIST
, &fi
->flags
);
1685 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1686 set_bit(FI_INLINE_DOTS
, &fi
->flags
);
1689 static inline void set_raw_inline(struct inode
*inode
, struct f2fs_inode
*ri
)
1693 if (is_inode_flag_set(inode
, FI_INLINE_XATTR
))
1694 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1695 if (is_inode_flag_set(inode
, FI_INLINE_DATA
))
1696 ri
->i_inline
|= F2FS_INLINE_DATA
;
1697 if (is_inode_flag_set(inode
, FI_INLINE_DENTRY
))
1698 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1699 if (is_inode_flag_set(inode
, FI_DATA_EXIST
))
1700 ri
->i_inline
|= F2FS_DATA_EXIST
;
1701 if (is_inode_flag_set(inode
, FI_INLINE_DOTS
))
1702 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1705 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1707 return is_inode_flag_set(inode
, FI_INLINE_XATTR
);
1710 static inline unsigned int addrs_per_inode(struct inode
*inode
)
1712 if (f2fs_has_inline_xattr(inode
))
1713 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1714 return DEF_ADDRS_PER_INODE
;
1717 static inline void *inline_xattr_addr(struct page
*page
)
1719 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1720 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1721 F2FS_INLINE_XATTR_ADDRS
]);
1724 static inline int inline_xattr_size(struct inode
*inode
)
1726 if (f2fs_has_inline_xattr(inode
))
1727 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1732 static inline int f2fs_has_inline_data(struct inode
*inode
)
1734 return is_inode_flag_set(inode
, FI_INLINE_DATA
);
1737 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1739 clear_inode_flag(inode
, FI_INLINE_DATA
);
1740 clear_inode_flag(inode
, FI_DATA_EXIST
);
1743 static inline int f2fs_exist_data(struct inode
*inode
)
1745 return is_inode_flag_set(inode
, FI_DATA_EXIST
);
1748 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1750 return is_inode_flag_set(inode
, FI_INLINE_DOTS
);
1753 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1755 return is_inode_flag_set(inode
, FI_ATOMIC_FILE
);
1758 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1760 return is_inode_flag_set(inode
, FI_VOLATILE_FILE
);
1763 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1765 return is_inode_flag_set(inode
, FI_FIRST_BLOCK_WRITTEN
);
1768 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1770 return is_inode_flag_set(inode
, FI_DROP_CACHE
);
1773 static inline void *inline_data_addr(struct page
*page
)
1775 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1776 return (void *)&(ri
->i_addr
[1]);
1779 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1781 return is_inode_flag_set(inode
, FI_INLINE_DENTRY
);
1784 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1786 if (!f2fs_has_inline_dentry(dir
))
1790 static inline int is_file(struct inode
*inode
, int type
)
1792 return F2FS_I(inode
)->i_advise
& type
;
1795 static inline void set_file(struct inode
*inode
, int type
)
1797 F2FS_I(inode
)->i_advise
|= type
;
1798 f2fs_mark_inode_dirty_sync(inode
);
1801 static inline void clear_file(struct inode
*inode
, int type
)
1803 F2FS_I(inode
)->i_advise
&= ~type
;
1804 f2fs_mark_inode_dirty_sync(inode
);
1807 static inline int f2fs_readonly(struct super_block
*sb
)
1809 return sb
->s_flags
& MS_RDONLY
;
1812 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1814 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1817 static inline bool is_dot_dotdot(const struct qstr
*str
)
1819 if (str
->len
== 1 && str
->name
[0] == '.')
1822 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1828 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1830 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1831 is_inode_flag_set(inode
, FI_NO_EXTENT
))
1834 return S_ISREG(inode
->i_mode
);
1837 static inline void *f2fs_kmalloc(size_t size
, gfp_t flags
)
1839 #ifdef CONFIG_F2FS_FAULT_INJECTION
1840 if (time_to_inject(FAULT_KMALLOC
))
1843 return kmalloc(size
, flags
);
1846 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1850 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1852 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1856 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1860 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1862 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1866 #define get_inode_mode(i) \
1867 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
1868 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1870 /* get offset of first page in next direct node */
1871 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1872 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1873 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1874 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1879 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1880 void truncate_data_blocks(struct dnode_of_data
*);
1881 int truncate_blocks(struct inode
*, u64
, bool);
1882 int f2fs_truncate(struct inode
*);
1883 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1884 int f2fs_setattr(struct dentry
*, struct iattr
*);
1885 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1886 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1887 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1888 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1893 void f2fs_set_inode_flags(struct inode
*);
1894 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1895 int try_to_free_nats(struct f2fs_sb_info
*, int);
1896 int update_inode(struct inode
*, struct page
*);
1897 int update_inode_page(struct inode
*);
1898 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1899 void f2fs_evict_inode(struct inode
*);
1900 void handle_failed_inode(struct inode
*);
1905 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1910 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1911 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1912 unsigned char get_de_type(struct f2fs_dir_entry
*);
1913 struct f2fs_dir_entry
*find_target_dentry(struct fscrypt_name
*,
1914 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1915 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1916 unsigned int, struct fscrypt_str
*);
1917 void do_make_empty_dir(struct inode
*, struct inode
*,
1918 struct f2fs_dentry_ptr
*);
1919 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1920 const struct qstr
*, struct page
*);
1921 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1922 int room_for_filename(const void *, int, int);
1923 void f2fs_drop_nlink(struct inode
*, struct inode
*);
1924 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, const struct qstr
*,
1926 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1927 ino_t
f2fs_inode_by_name(struct inode
*, const struct qstr
*, struct page
**);
1928 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1929 struct page
*, struct inode
*);
1930 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1931 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1932 const struct qstr
*, f2fs_hash_t
, unsigned int);
1933 int f2fs_add_regular_entry(struct inode
*, const struct qstr
*,
1934 struct inode
*, nid_t
, umode_t
);
1935 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1937 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1939 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1940 bool f2fs_empty_dir(struct inode
*);
1942 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1944 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1945 inode
, inode
->i_ino
, inode
->i_mode
);
1951 int f2fs_inode_dirtied(struct inode
*);
1952 void f2fs_inode_synced(struct inode
*);
1953 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1954 int f2fs_sync_fs(struct super_block
*, int);
1955 extern __printf(3, 4)
1956 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1957 int sanity_check_ckpt(struct f2fs_sb_info
*sbi
);
1962 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1967 struct dnode_of_data
;
1970 bool available_free_memory(struct f2fs_sb_info
*, int);
1971 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1972 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1973 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1974 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1975 pgoff_t
get_next_page_offset(struct dnode_of_data
*, pgoff_t
);
1976 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1977 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1978 int truncate_xattr_node(struct inode
*, struct page
*);
1979 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1980 int remove_inode_page(struct inode
*);
1981 struct page
*new_inode_page(struct inode
*);
1982 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1983 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1984 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1985 struct page
*get_node_page_ra(struct page
*, int);
1986 void move_node_page(struct page
*, int);
1987 int fsync_node_pages(struct f2fs_sb_info
*, struct inode
*,
1988 struct writeback_control
*, bool);
1989 int sync_node_pages(struct f2fs_sb_info
*, struct writeback_control
*);
1990 void build_free_nids(struct f2fs_sb_info
*);
1991 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1992 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1993 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1994 int try_to_free_nids(struct f2fs_sb_info
*, int);
1995 void recover_inline_xattr(struct inode
*, struct page
*);
1996 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1997 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1998 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1999 struct f2fs_summary_block
*);
2000 void flush_nat_entries(struct f2fs_sb_info
*);
2001 int build_node_manager(struct f2fs_sb_info
*);
2002 void destroy_node_manager(struct f2fs_sb_info
*);
2003 int __init
create_node_manager_caches(void);
2004 void destroy_node_manager_caches(void);
2009 void register_inmem_page(struct inode
*, struct page
*);
2010 void drop_inmem_pages(struct inode
*);
2011 int commit_inmem_pages(struct inode
*);
2012 void f2fs_balance_fs(struct f2fs_sb_info
*, bool);
2013 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
2014 int f2fs_issue_flush(struct f2fs_sb_info
*);
2015 int create_flush_cmd_control(struct f2fs_sb_info
*);
2016 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
2017 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
2018 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
2019 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
2020 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
2021 void release_discard_addrs(struct f2fs_sb_info
*);
2022 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
2023 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
2024 void allocate_new_segments(struct f2fs_sb_info
*);
2025 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
2026 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
2027 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
2028 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
2029 void write_node_page(unsigned int, struct f2fs_io_info
*);
2030 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
2031 void rewrite_data_page(struct f2fs_io_info
*);
2032 void __f2fs_replace_block(struct f2fs_sb_info
*, struct f2fs_summary
*,
2033 block_t
, block_t
, bool, bool);
2034 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
2035 block_t
, block_t
, unsigned char, bool, bool);
2036 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
2037 block_t
, block_t
*, struct f2fs_summary
*, int);
2038 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
, bool);
2039 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
2040 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
2041 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
2042 int lookup_journal_in_cursum(struct f2fs_journal
*, int, unsigned int, int);
2043 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
2044 int build_segment_manager(struct f2fs_sb_info
*);
2045 void destroy_segment_manager(struct f2fs_sb_info
*);
2046 int __init
create_segment_manager_caches(void);
2047 void destroy_segment_manager_caches(void);
2052 void f2fs_stop_checkpoint(struct f2fs_sb_info
*, bool);
2053 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
2054 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
2055 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
2056 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
2057 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
2058 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
2059 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
2060 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
2061 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
2062 void release_ino_entry(struct f2fs_sb_info
*, bool);
2063 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
2064 int f2fs_sync_inode_meta(struct f2fs_sb_info
*);
2065 int acquire_orphan_inode(struct f2fs_sb_info
*);
2066 void release_orphan_inode(struct f2fs_sb_info
*);
2067 void add_orphan_inode(struct inode
*);
2068 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
2069 int recover_orphan_inodes(struct f2fs_sb_info
*);
2070 int get_valid_checkpoint(struct f2fs_sb_info
*);
2071 void update_dirty_page(struct inode
*, struct page
*);
2072 void remove_dirty_inode(struct inode
*);
2073 int sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
2074 int write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
2075 void init_ino_entry_info(struct f2fs_sb_info
*);
2076 int __init
create_checkpoint_caches(void);
2077 void destroy_checkpoint_caches(void);
2082 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
2083 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info
*, struct inode
*,
2084 struct page
*, nid_t
, enum page_type
, int);
2085 void f2fs_flush_merged_bios(struct f2fs_sb_info
*);
2086 int f2fs_submit_page_bio(struct f2fs_io_info
*);
2087 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
2088 void set_data_blkaddr(struct dnode_of_data
*);
2089 void f2fs_update_data_blkaddr(struct dnode_of_data
*, block_t
);
2090 int reserve_new_blocks(struct dnode_of_data
*, blkcnt_t
);
2091 int reserve_new_block(struct dnode_of_data
*);
2092 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
2093 ssize_t
f2fs_preallocate_blocks(struct kiocb
*, struct iov_iter
*);
2094 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
2095 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
2096 struct page
*find_data_page(struct inode
*, pgoff_t
);
2097 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
2098 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
2099 int do_write_data_page(struct f2fs_io_info
*);
2100 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
2101 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
2102 void f2fs_set_page_dirty_nobuffers(struct page
*);
2103 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
2104 int f2fs_release_page(struct page
*, gfp_t
);
2109 int start_gc_thread(struct f2fs_sb_info
*);
2110 void stop_gc_thread(struct f2fs_sb_info
*);
2111 block_t
start_bidx_of_node(unsigned int, struct inode
*);
2112 int f2fs_gc(struct f2fs_sb_info
*, bool);
2113 void build_gc_manager(struct f2fs_sb_info
*);
2118 int recover_fsync_data(struct f2fs_sb_info
*, bool);
2119 bool space_for_roll_forward(struct f2fs_sb_info
*);
2124 #ifdef CONFIG_F2FS_STAT_FS
2125 struct f2fs_stat_info
{
2126 struct list_head stat_list
;
2127 struct f2fs_sb_info
*sbi
;
2128 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
2129 int main_area_segs
, main_area_sections
, main_area_zones
;
2130 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
2131 unsigned long long hit_total
, total_ext
;
2132 int ext_tree
, zombie_tree
, ext_node
;
2133 s64 ndirty_node
, ndirty_dent
, ndirty_meta
, ndirty_data
, inmem_pages
;
2134 unsigned int ndirty_dirs
, ndirty_files
, ndirty_all
;
2135 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
2136 int total_count
, utilization
;
2138 int inline_xattr
, inline_inode
, inline_dir
, orphans
;
2139 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
2140 unsigned int bimodal
, avg_vblocks
;
2141 int util_free
, util_valid
, util_invalid
;
2142 int rsvd_segs
, overp_segs
;
2143 int dirty_count
, node_pages
, meta_pages
;
2144 int prefree_count
, call_count
, cp_count
, bg_cp_count
;
2145 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
2146 int bg_node_segs
, bg_data_segs
;
2147 int tot_blks
, data_blks
, node_blks
;
2148 int bg_data_blks
, bg_node_blks
;
2149 int curseg
[NR_CURSEG_TYPE
];
2150 int cursec
[NR_CURSEG_TYPE
];
2151 int curzone
[NR_CURSEG_TYPE
];
2153 unsigned int segment_count
[2];
2154 unsigned int block_count
[2];
2155 unsigned int inplace_count
;
2156 unsigned long long base_mem
, cache_mem
, page_mem
;
2159 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
2161 return (struct f2fs_stat_info
*)sbi
->stat_info
;
2164 #define stat_inc_cp_count(si) ((si)->cp_count++)
2165 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2166 #define stat_inc_call_count(si) ((si)->call_count++)
2167 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2168 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2169 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2170 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2171 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2172 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2173 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2174 #define stat_inc_inline_xattr(inode) \
2176 if (f2fs_has_inline_xattr(inode)) \
2177 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2179 #define stat_dec_inline_xattr(inode) \
2181 if (f2fs_has_inline_xattr(inode)) \
2182 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2184 #define stat_inc_inline_inode(inode) \
2186 if (f2fs_has_inline_data(inode)) \
2187 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2189 #define stat_dec_inline_inode(inode) \
2191 if (f2fs_has_inline_data(inode)) \
2192 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2194 #define stat_inc_inline_dir(inode) \
2196 if (f2fs_has_inline_dentry(inode)) \
2197 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2199 #define stat_dec_inline_dir(inode) \
2201 if (f2fs_has_inline_dentry(inode)) \
2202 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2204 #define stat_inc_seg_type(sbi, curseg) \
2205 ((sbi)->segment_count[(curseg)->alloc_type]++)
2206 #define stat_inc_block_count(sbi, curseg) \
2207 ((sbi)->block_count[(curseg)->alloc_type]++)
2208 #define stat_inc_inplace_blocks(sbi) \
2209 (atomic_inc(&(sbi)->inplace_count))
2210 #define stat_inc_seg_count(sbi, type, gc_type) \
2212 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2214 if (type == SUM_TYPE_DATA) { \
2216 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2219 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2223 #define stat_inc_tot_blk_count(si, blks) \
2224 (si->tot_blks += (blks))
2226 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2228 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2229 stat_inc_tot_blk_count(si, blks); \
2230 si->data_blks += (blks); \
2231 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2234 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2236 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2237 stat_inc_tot_blk_count(si, blks); \
2238 si->node_blks += (blks); \
2239 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2242 int f2fs_build_stats(struct f2fs_sb_info
*);
2243 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2244 int __init
f2fs_create_root_stats(void);
2245 void f2fs_destroy_root_stats(void);
2247 #define stat_inc_cp_count(si)
2248 #define stat_inc_bg_cp_count(si)
2249 #define stat_inc_call_count(si)
2250 #define stat_inc_bggc_count(si)
2251 #define stat_inc_dirty_inode(sbi, type)
2252 #define stat_dec_dirty_inode(sbi, type)
2253 #define stat_inc_total_hit(sb)
2254 #define stat_inc_rbtree_node_hit(sb)
2255 #define stat_inc_largest_node_hit(sbi)
2256 #define stat_inc_cached_node_hit(sbi)
2257 #define stat_inc_inline_xattr(inode)
2258 #define stat_dec_inline_xattr(inode)
2259 #define stat_inc_inline_inode(inode)
2260 #define stat_dec_inline_inode(inode)
2261 #define stat_inc_inline_dir(inode)
2262 #define stat_dec_inline_dir(inode)
2263 #define stat_inc_seg_type(sbi, curseg)
2264 #define stat_inc_block_count(sbi, curseg)
2265 #define stat_inc_inplace_blocks(sbi)
2266 #define stat_inc_seg_count(sbi, type, gc_type)
2267 #define stat_inc_tot_blk_count(si, blks)
2268 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2269 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2271 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2272 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2273 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2274 static inline void f2fs_destroy_root_stats(void) { }
2277 extern const struct file_operations f2fs_dir_operations
;
2278 extern const struct file_operations f2fs_file_operations
;
2279 extern const struct inode_operations f2fs_file_inode_operations
;
2280 extern const struct address_space_operations f2fs_dblock_aops
;
2281 extern const struct address_space_operations f2fs_node_aops
;
2282 extern const struct address_space_operations f2fs_meta_aops
;
2283 extern const struct inode_operations f2fs_dir_inode_operations
;
2284 extern const struct inode_operations f2fs_symlink_inode_operations
;
2285 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2286 extern const struct inode_operations f2fs_special_inode_operations
;
2287 extern struct kmem_cache
*inode_entry_slab
;
2292 bool f2fs_may_inline_data(struct inode
*);
2293 bool f2fs_may_inline_dentry(struct inode
*);
2294 void read_inline_data(struct page
*, struct page
*);
2295 bool truncate_inline_inode(struct page
*, u64
);
2296 int f2fs_read_inline_data(struct inode
*, struct page
*);
2297 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2298 int f2fs_convert_inline_inode(struct inode
*);
2299 int f2fs_write_inline_data(struct inode
*, struct page
*);
2300 bool recover_inline_data(struct inode
*, struct page
*);
2301 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2302 struct fscrypt_name
*, struct page
**);
2303 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2304 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2306 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2307 struct inode
*, struct inode
*);
2308 bool f2fs_empty_inline_dir(struct inode
*);
2309 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2310 struct fscrypt_str
*);
2311 int f2fs_inline_data_fiemap(struct inode
*,
2312 struct fiemap_extent_info
*, __u64
, __u64
);
2317 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2318 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2319 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2320 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2325 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2326 bool f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2327 void f2fs_drop_extent_tree(struct inode
*);
2328 unsigned int f2fs_destroy_extent_node(struct inode
*);
2329 void f2fs_destroy_extent_tree(struct inode
*);
2330 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2331 void f2fs_update_extent_cache(struct dnode_of_data
*);
2332 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2333 pgoff_t
, block_t
, unsigned int);
2334 void init_extent_cache_info(struct f2fs_sb_info
*);
2335 int __init
create_extent_cache(void);
2336 void destroy_extent_cache(void);
2341 static inline bool f2fs_encrypted_inode(struct inode
*inode
)
2343 return file_is_encrypt(inode
);
2346 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2348 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2349 file_set_encrypt(inode
);
2353 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2355 return bio
->bi_private
!= NULL
;
2358 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2360 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2363 static inline int f2fs_sb_mounted_hmsmr(struct super_block
*sb
)
2365 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_HMSMR
);
2368 static inline void set_opt_mode(struct f2fs_sb_info
*sbi
, unsigned int mt
)
2370 clear_opt(sbi
, ADAPTIVE
);
2371 clear_opt(sbi
, LFS
);
2374 case F2FS_MOUNT_ADAPTIVE
:
2375 set_opt(sbi
, ADAPTIVE
);
2377 case F2FS_MOUNT_LFS
:
2383 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2385 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2386 umode_t mode
= inode
->i_mode
;
2388 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2394 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2395 #define fscrypt_set_d_op(i)
2396 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2397 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2398 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2399 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2400 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2401 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2402 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2403 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2404 #define fscrypt_process_policy fscrypt_notsupp_process_policy
2405 #define fscrypt_get_policy fscrypt_notsupp_get_policy
2406 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2407 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2408 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2409 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2410 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2411 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2412 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2413 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2414 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2415 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2416 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk