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 120 /* 2 mins */
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)
272 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
273 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
274 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
277 * should be same as XFS_IOC_GOINGDOWN.
278 * Flags for going down operation used by FS_IOC_GOINGDOWN
280 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
281 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
282 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
283 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
284 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
286 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
288 * ioctl commands in 32 bit emulation
290 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
291 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
292 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
295 struct f2fs_defragment
{
301 * For INODE and NODE manager
303 /* for directory operations */
304 struct f2fs_dentry_ptr
{
307 struct f2fs_dir_entry
*dentry
;
308 __u8 (*filename
)[F2FS_SLOT_LEN
];
312 static inline void make_dentry_ptr(struct inode
*inode
,
313 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
318 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
319 d
->max
= NR_DENTRY_IN_BLOCK
;
320 d
->bitmap
= &t
->dentry_bitmap
;
321 d
->dentry
= t
->dentry
;
322 d
->filename
= t
->filename
;
324 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
325 d
->max
= NR_INLINE_DENTRY
;
326 d
->bitmap
= &t
->dentry_bitmap
;
327 d
->dentry
= t
->dentry
;
328 d
->filename
= t
->filename
;
333 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
334 * as its node offset to distinguish from index node blocks.
335 * But some bits are used to mark the node block.
337 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
340 ALLOC_NODE
, /* allocate a new node page if needed */
341 LOOKUP_NODE
, /* look up a node without readahead */
343 * look up a node with readahead called
348 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
350 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
352 /* vector size for gang look-up from extent cache that consists of radix tree */
353 #define EXT_TREE_VEC_SIZE 64
355 /* for in-memory extent cache entry */
356 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
358 /* number of extent info in extent cache we try to shrink */
359 #define EXTENT_CACHE_SHRINK_NUMBER 128
362 unsigned int fofs
; /* start offset in a file */
363 u32 blk
; /* start block address of the extent */
364 unsigned int len
; /* length of the extent */
368 struct rb_node rb_node
; /* rb node located in rb-tree */
369 struct list_head list
; /* node in global extent list of sbi */
370 struct extent_info ei
; /* extent info */
371 struct extent_tree
*et
; /* extent tree pointer */
375 nid_t ino
; /* inode number */
376 struct rb_root root
; /* root of extent info rb-tree */
377 struct extent_node
*cached_en
; /* recently accessed extent node */
378 struct extent_info largest
; /* largested extent info */
379 struct list_head list
; /* to be used by sbi->zombie_list */
380 rwlock_t lock
; /* protect extent info rb-tree */
381 atomic_t node_cnt
; /* # of extent node in rb-tree*/
385 * This structure is taken from ext4_map_blocks.
387 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
389 #define F2FS_MAP_NEW (1 << BH_New)
390 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
391 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
392 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
395 struct f2fs_map_blocks
{
399 unsigned int m_flags
;
400 pgoff_t
*m_next_pgofs
; /* point next possible non-hole pgofs */
403 /* for flag in get_data_block */
404 #define F2FS_GET_BLOCK_READ 0
405 #define F2FS_GET_BLOCK_DIO 1
406 #define F2FS_GET_BLOCK_FIEMAP 2
407 #define F2FS_GET_BLOCK_BMAP 3
408 #define F2FS_GET_BLOCK_PRE_DIO 4
409 #define F2FS_GET_BLOCK_PRE_AIO 5
412 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
414 #define FADVISE_COLD_BIT 0x01
415 #define FADVISE_LOST_PINO_BIT 0x02
416 #define FADVISE_ENCRYPT_BIT 0x04
417 #define FADVISE_ENC_NAME_BIT 0x08
419 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
420 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
421 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
422 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
423 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
424 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
425 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
426 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
427 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
428 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
429 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
431 #define DEF_DIR_LEVEL 0
433 struct f2fs_inode_info
{
434 struct inode vfs_inode
; /* serve a vfs inode */
435 unsigned long i_flags
; /* keep an inode flags for ioctl */
436 unsigned char i_advise
; /* use to give file attribute hints */
437 unsigned char i_dir_level
; /* use for dentry level for large dir */
438 unsigned int i_current_depth
; /* use only in directory structure */
439 unsigned int i_pino
; /* parent inode number */
440 umode_t i_acl_mode
; /* keep file acl mode temporarily */
442 /* Use below internally in f2fs*/
443 unsigned long flags
; /* use to pass per-file flags */
444 struct rw_semaphore i_sem
; /* protect fi info */
445 struct percpu_counter dirty_pages
; /* # of dirty pages */
446 f2fs_hash_t chash
; /* hash value of given file name */
447 unsigned int clevel
; /* maximum level of given file name */
448 nid_t i_xattr_nid
; /* node id that contains xattrs */
449 unsigned long long xattr_ver
; /* cp version of xattr modification */
450 loff_t last_disk_size
; /* lastly written file size */
452 struct list_head dirty_list
; /* dirty list for dirs and files */
453 struct list_head gdirty_list
; /* linked in global dirty list */
454 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
455 struct mutex inmem_lock
; /* lock for inmemory pages */
456 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
459 static inline void get_extent_info(struct extent_info
*ext
,
460 struct f2fs_extent
*i_ext
)
462 ext
->fofs
= le32_to_cpu(i_ext
->fofs
);
463 ext
->blk
= le32_to_cpu(i_ext
->blk
);
464 ext
->len
= le32_to_cpu(i_ext
->len
);
467 static inline void set_raw_extent(struct extent_info
*ext
,
468 struct f2fs_extent
*i_ext
)
470 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
471 i_ext
->blk
= cpu_to_le32(ext
->blk
);
472 i_ext
->len
= cpu_to_le32(ext
->len
);
475 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
476 u32 blk
, unsigned int len
)
483 static inline bool __is_extent_same(struct extent_info
*ei1
,
484 struct extent_info
*ei2
)
486 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
487 ei1
->len
== ei2
->len
);
490 static inline bool __is_extent_mergeable(struct extent_info
*back
,
491 struct extent_info
*front
)
493 return (back
->fofs
+ back
->len
== front
->fofs
&&
494 back
->blk
+ back
->len
== front
->blk
);
497 static inline bool __is_back_mergeable(struct extent_info
*cur
,
498 struct extent_info
*back
)
500 return __is_extent_mergeable(back
, cur
);
503 static inline bool __is_front_mergeable(struct extent_info
*cur
,
504 struct extent_info
*front
)
506 return __is_extent_mergeable(cur
, front
);
509 static inline void __try_update_largest_extent(struct inode
*inode
,
510 struct extent_tree
*et
, struct extent_node
*en
)
512 if (en
->ei
.len
> et
->largest
.len
) {
513 et
->largest
= en
->ei
;
514 mark_inode_dirty_sync(inode
);
518 struct f2fs_nm_info
{
519 block_t nat_blkaddr
; /* base disk address of NAT */
520 nid_t max_nid
; /* maximum possible node ids */
521 nid_t available_nids
; /* maximum available node ids */
522 nid_t next_scan_nid
; /* the next nid to be scanned */
523 unsigned int ram_thresh
; /* control the memory footprint */
524 unsigned int ra_nid_pages
; /* # of nid pages to be readaheaded */
525 unsigned int dirty_nats_ratio
; /* control dirty nats ratio threshold */
527 /* NAT cache management */
528 struct radix_tree_root nat_root
;/* root of the nat entry cache */
529 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
530 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
531 struct list_head nat_entries
; /* cached nat entry list (clean) */
532 unsigned int nat_cnt
; /* the # of cached nat entries */
533 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
535 /* free node ids management */
536 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
537 struct list_head free_nid_list
; /* a list for free nids */
538 spinlock_t free_nid_list_lock
; /* protect free nid list */
539 unsigned int fcnt
; /* the number of free node id */
540 struct mutex build_lock
; /* lock for build free nids */
543 char *nat_bitmap
; /* NAT bitmap pointer */
544 int bitmap_size
; /* bitmap size */
548 * this structure is used as one of function parameters.
549 * all the information are dedicated to a given direct node block determined
550 * by the data offset in a file.
552 struct dnode_of_data
{
553 struct inode
*inode
; /* vfs inode pointer */
554 struct page
*inode_page
; /* its inode page, NULL is possible */
555 struct page
*node_page
; /* cached direct node page */
556 nid_t nid
; /* node id of the direct node block */
557 unsigned int ofs_in_node
; /* data offset in the node page */
558 bool inode_page_locked
; /* inode page is locked or not */
559 bool node_changed
; /* is node block changed */
560 char cur_level
; /* level of hole node page */
561 char max_level
; /* level of current page located */
562 block_t data_blkaddr
; /* block address of the node block */
565 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
566 struct page
*ipage
, struct page
*npage
, nid_t nid
)
568 memset(dn
, 0, sizeof(*dn
));
570 dn
->inode_page
= ipage
;
571 dn
->node_page
= npage
;
578 * By default, there are 6 active log areas across the whole main area.
579 * When considering hot and cold data separation to reduce cleaning overhead,
580 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
582 * In the current design, you should not change the numbers intentionally.
583 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
584 * logs individually according to the underlying devices. (default: 6)
585 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
586 * data and 8 for node logs.
588 #define NR_CURSEG_DATA_TYPE (3)
589 #define NR_CURSEG_NODE_TYPE (3)
590 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
593 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
594 CURSEG_WARM_DATA
, /* data blocks */
595 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
596 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
597 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
598 CURSEG_COLD_NODE
, /* indirect node blocks */
600 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
604 struct completion wait
;
605 struct llist_node llnode
;
609 struct flush_cmd_control
{
610 struct task_struct
*f2fs_issue_flush
; /* flush thread */
611 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
612 atomic_t submit_flush
; /* # of issued flushes */
613 struct llist_head issue_list
; /* list for command issue */
614 struct llist_node
*dispatch_list
; /* list for command dispatch */
617 struct f2fs_sm_info
{
618 struct sit_info
*sit_info
; /* whole segment information */
619 struct free_segmap_info
*free_info
; /* free segment information */
620 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
621 struct curseg_info
*curseg_array
; /* active segment information */
623 block_t seg0_blkaddr
; /* block address of 0'th segment */
624 block_t main_blkaddr
; /* start block address of main area */
625 block_t ssa_blkaddr
; /* start block address of SSA area */
627 unsigned int segment_count
; /* total # of segments */
628 unsigned int main_segments
; /* # of segments in main area */
629 unsigned int reserved_segments
; /* # of reserved segments */
630 unsigned int ovp_segments
; /* # of overprovision segments */
632 /* a threshold to reclaim prefree segments */
633 unsigned int rec_prefree_segments
;
635 /* for small discard management */
636 struct list_head discard_list
; /* 4KB discard list */
637 int nr_discards
; /* # of discards in the list */
638 int max_discards
; /* max. discards to be issued */
640 /* for batched trimming */
641 unsigned int trim_sections
; /* # of sections to trim */
643 struct list_head sit_entry_set
; /* sit entry set list */
645 unsigned int ipu_policy
; /* in-place-update policy */
646 unsigned int min_ipu_util
; /* in-place-update threshold */
647 unsigned int min_fsync_blocks
; /* threshold for fsync */
649 /* for flush command control */
650 struct flush_cmd_control
*cmd_control_info
;
658 * COUNT_TYPE for monitoring
660 * f2fs monitors the number of several block types such as on-writeback,
661 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
674 * The below are the page types of bios used in submit_bio().
675 * The available types are:
676 * DATA User data pages. It operates as async mode.
677 * NODE Node pages. It operates as async mode.
678 * META FS metadata pages such as SIT, NAT, CP.
679 * NR_PAGE_TYPE The number of page types.
680 * META_FLUSH Make sure the previous pages are written
681 * with waiting the bio's completion
682 * ... Only can be used with META.
684 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
691 INMEM
, /* the below types are used by tracepoints only. */
698 struct f2fs_io_info
{
699 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
700 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
701 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
702 block_t new_blkaddr
; /* new block address to be written */
703 block_t old_blkaddr
; /* old block address before Cow */
704 struct page
*page
; /* page to be written */
705 struct page
*encrypted_page
; /* encrypted page */
708 #define is_read_io(rw) (((rw) & 1) == READ)
709 struct f2fs_bio_info
{
710 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
711 struct bio
*bio
; /* bios to merge */
712 sector_t last_block_in_bio
; /* last block number */
713 struct f2fs_io_info fio
; /* store buffered io info. */
714 struct rw_semaphore io_rwsem
; /* blocking op for bio */
718 DIR_INODE
, /* for dirty dir inode */
719 FILE_INODE
, /* for dirty regular/symlink inode */
720 DIRTY_META
, /* for all dirtied inode metadata */
724 /* for inner inode cache management */
725 struct inode_management
{
726 struct radix_tree_root ino_root
; /* ino entry array */
727 spinlock_t ino_lock
; /* for ino entry lock */
728 struct list_head ino_list
; /* inode list head */
729 unsigned long ino_num
; /* number of entries */
732 /* For s_flag in struct f2fs_sb_info */
734 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
735 SBI_IS_CLOSE
, /* specify unmounting */
736 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
737 SBI_POR_DOING
, /* recovery is doing or not */
738 SBI_NEED_SB_WRITE
, /* need to recover superblock */
747 #ifdef CONFIG_F2FS_FS_ENCRYPTION
748 #define F2FS_KEY_DESC_PREFIX "f2fs:"
749 #define F2FS_KEY_DESC_PREFIX_SIZE 5
751 struct f2fs_sb_info
{
752 struct super_block
*sb
; /* pointer to VFS super block */
753 struct proc_dir_entry
*s_proc
; /* proc entry */
754 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
755 int valid_super_block
; /* valid super block no */
756 int s_flag
; /* flags for sbi */
758 #ifdef CONFIG_F2FS_FS_ENCRYPTION
759 u8 key_prefix
[F2FS_KEY_DESC_PREFIX_SIZE
];
762 /* for node-related operations */
763 struct f2fs_nm_info
*nm_info
; /* node manager */
764 struct inode
*node_inode
; /* cache node blocks */
766 /* for segment-related operations */
767 struct f2fs_sm_info
*sm_info
; /* segment manager */
769 /* for bio operations */
770 struct f2fs_bio_info read_io
; /* for read bios */
771 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
772 struct mutex wio_mutex
[NODE
+ 1]; /* bio ordering for NODE/DATA */
775 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
776 struct inode
*meta_inode
; /* cache meta blocks */
777 struct mutex cp_mutex
; /* checkpoint procedure lock */
778 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
779 struct rw_semaphore node_write
; /* locking node writes */
780 wait_queue_head_t cp_wait
;
781 unsigned long last_time
[MAX_TIME
]; /* to store time in jiffies */
782 long interval_time
[MAX_TIME
]; /* to store thresholds */
784 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
786 /* for orphan inode, use 0'th array */
787 unsigned int max_orphans
; /* max orphan inodes */
789 /* for inode management */
790 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
791 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
793 /* for extent tree cache */
794 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
795 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
796 struct list_head extent_list
; /* lru list for shrinker */
797 spinlock_t extent_lock
; /* locking extent lru list */
798 atomic_t total_ext_tree
; /* extent tree count */
799 struct list_head zombie_list
; /* extent zombie tree list */
800 atomic_t total_zombie_tree
; /* extent zombie tree count */
801 atomic_t total_ext_node
; /* extent info count */
803 /* basic filesystem units */
804 unsigned int log_sectors_per_block
; /* log2 sectors per block */
805 unsigned int log_blocksize
; /* log2 block size */
806 unsigned int blocksize
; /* block size */
807 unsigned int root_ino_num
; /* root inode number*/
808 unsigned int node_ino_num
; /* node inode number*/
809 unsigned int meta_ino_num
; /* meta inode number*/
810 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
811 unsigned int blocks_per_seg
; /* blocks per segment */
812 unsigned int segs_per_sec
; /* segments per section */
813 unsigned int secs_per_zone
; /* sections per zone */
814 unsigned int total_sections
; /* total section count */
815 unsigned int total_node_count
; /* total node block count */
816 unsigned int total_valid_node_count
; /* valid node block count */
817 loff_t max_file_blocks
; /* max block index of file */
818 int active_logs
; /* # of active logs */
819 int dir_level
; /* directory level */
821 block_t user_block_count
; /* # of user blocks */
822 block_t total_valid_block_count
; /* # of valid blocks */
823 block_t discard_blks
; /* discard command candidats */
824 block_t last_valid_block_count
; /* for recovery */
825 u32 s_next_generation
; /* for NFS support */
826 atomic_t nr_wb_bios
; /* # of writeback bios */
828 /* # of pages, see count_type */
829 struct percpu_counter nr_pages
[NR_COUNT_TYPE
];
830 /* # of allocated blocks */
831 struct percpu_counter alloc_valid_block_count
;
833 /* valid inode count */
834 struct percpu_counter total_valid_inode_count
;
836 struct f2fs_mount_info mount_opt
; /* mount options */
838 /* for cleaning operations */
839 struct mutex gc_mutex
; /* mutex for GC */
840 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
841 unsigned int cur_victim_sec
; /* current victim section num */
843 /* maximum # of trials to find a victim segment for SSR and GC */
844 unsigned int max_victim_search
;
847 * for stat information.
848 * one is for the LFS mode, and the other is for the SSR mode.
850 #ifdef CONFIG_F2FS_STAT_FS
851 struct f2fs_stat_info
*stat_info
; /* FS status information */
852 unsigned int segment_count
[2]; /* # of allocated segments */
853 unsigned int block_count
[2]; /* # of allocated blocks */
854 atomic_t inplace_count
; /* # of inplace update */
855 atomic64_t total_hit_ext
; /* # of lookup extent cache */
856 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
857 atomic64_t read_hit_largest
; /* # of hit largest extent node */
858 atomic64_t read_hit_cached
; /* # of hit cached extent node */
859 atomic_t inline_xattr
; /* # of inline_xattr inodes */
860 atomic_t inline_inode
; /* # of inline_data inodes */
861 atomic_t inline_dir
; /* # of inline_dentry inodes */
862 int bg_gc
; /* background gc calls */
863 unsigned int ndirty_inode
[NR_INODE_TYPE
]; /* # of dirty inodes */
865 unsigned int last_victim
[2]; /* last victim segment # */
866 spinlock_t stat_lock
; /* lock for stat operations */
868 /* For sysfs suppport */
869 struct kobject s_kobj
;
870 struct completion s_kobj_unregister
;
872 /* For shrinker support */
873 struct list_head s_list
;
874 struct mutex umount_mutex
;
875 unsigned int shrinker_run_no
;
877 /* For write statistics */
878 u64 sectors_written_start
;
881 /* Reference to checksum algorithm driver via cryptoapi */
882 struct crypto_shash
*s_chksum_driver
;
885 /* For write statistics. Suppose sector size is 512 bytes,
886 * and the return value is in kbytes. s is of struct f2fs_sb_info.
888 #define BD_PART_WRITTEN(s) \
889 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
890 s->sectors_written_start) >> 1)
892 static inline void f2fs_update_time(struct f2fs_sb_info
*sbi
, int type
)
894 sbi
->last_time
[type
] = jiffies
;
897 static inline bool f2fs_time_over(struct f2fs_sb_info
*sbi
, int type
)
899 struct timespec ts
= {sbi
->interval_time
[type
], 0};
900 unsigned long interval
= timespec_to_jiffies(&ts
);
902 return time_after(jiffies
, sbi
->last_time
[type
] + interval
);
905 static inline bool is_idle(struct f2fs_sb_info
*sbi
)
907 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
908 struct request_queue
*q
= bdev_get_queue(bdev
);
909 struct request_list
*rl
= &q
->root_rl
;
911 if (rl
->count
[BLK_RW_SYNC
] || rl
->count
[BLK_RW_ASYNC
])
914 return f2fs_time_over(sbi
, REQ_TIME
);
920 static inline u32
f2fs_crc32(struct f2fs_sb_info
*sbi
, const void *address
,
923 SHASH_DESC_ON_STACK(shash
, sbi
->s_chksum_driver
);
924 u32
*ctx
= (u32
*)shash_desc_ctx(shash
);
927 shash
->tfm
= sbi
->s_chksum_driver
;
929 *ctx
= F2FS_SUPER_MAGIC
;
931 err
= crypto_shash_update(shash
, address
, length
);
937 static inline bool f2fs_crc_valid(struct f2fs_sb_info
*sbi
, __u32 blk_crc
,
938 void *buf
, size_t buf_size
)
940 return f2fs_crc32(sbi
, buf
, buf_size
) == blk_crc
;
943 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
945 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
948 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
950 return sb
->s_fs_info
;
953 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
955 return F2FS_SB(inode
->i_sb
);
958 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
960 return F2FS_I_SB(mapping
->host
);
963 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
965 return F2FS_M_SB(page
->mapping
);
968 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
970 return (struct f2fs_super_block
*)(sbi
->raw_super
);
973 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
975 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
978 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
980 return (struct f2fs_node
*)page_address(page
);
983 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
985 return &((struct f2fs_node
*)page_address(page
))->i
;
988 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
990 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
993 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
995 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
998 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
1000 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
1003 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
1005 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
1008 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
1010 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
1013 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
1015 return sbi
->meta_inode
->i_mapping
;
1018 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
1020 return sbi
->node_inode
->i_mapping
;
1023 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
1025 return sbi
->s_flag
& (0x01 << type
);
1028 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
1030 sbi
->s_flag
|= (0x01 << type
);
1033 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
1035 sbi
->s_flag
&= ~(0x01 << type
);
1038 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
1040 return le64_to_cpu(cp
->checkpoint_ver
);
1043 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1045 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1046 return ckpt_flags
& f
;
1049 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1051 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1053 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1056 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1058 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1060 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1063 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
1065 down_read(&sbi
->cp_rwsem
);
1068 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
1070 up_read(&sbi
->cp_rwsem
);
1073 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
1075 down_write(&sbi
->cp_rwsem
);
1078 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
1080 up_write(&sbi
->cp_rwsem
);
1083 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
1085 int reason
= CP_SYNC
;
1087 if (test_opt(sbi
, FASTBOOT
))
1088 reason
= CP_FASTBOOT
;
1089 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
1094 static inline bool __remain_node_summaries(int reason
)
1096 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
1099 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
1101 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
1102 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1106 * Check whether the given nid is within node id range.
1108 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1110 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1112 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1117 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1120 * Check whether the inode has blocks or not
1122 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1124 if (F2FS_I(inode
)->i_xattr_nid
)
1125 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1127 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1130 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1132 return ofs
== XATTR_NODE_OFFSET
;
1135 static inline void f2fs_i_blocks_write(struct inode
*, blkcnt_t
, bool);
1136 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1137 struct inode
*inode
, blkcnt_t
*count
)
1139 #ifdef CONFIG_F2FS_FAULT_INJECTION
1140 if (time_to_inject(FAULT_BLOCK
))
1143 spin_lock(&sbi
->stat_lock
);
1144 sbi
->total_valid_block_count
+= (block_t
)(*count
);
1145 if (unlikely(sbi
->total_valid_block_count
> sbi
->user_block_count
)) {
1146 *count
-= sbi
->total_valid_block_count
- sbi
->user_block_count
;
1147 sbi
->total_valid_block_count
= sbi
->user_block_count
;
1149 spin_unlock(&sbi
->stat_lock
);
1153 spin_unlock(&sbi
->stat_lock
);
1155 f2fs_i_blocks_write(inode
, *count
, true);
1156 percpu_counter_add(&sbi
->alloc_valid_block_count
, (*count
));
1160 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1161 struct inode
*inode
,
1164 spin_lock(&sbi
->stat_lock
);
1165 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1166 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1167 sbi
->total_valid_block_count
-= (block_t
)count
;
1168 spin_unlock(&sbi
->stat_lock
);
1169 f2fs_i_blocks_write(inode
, count
, false);
1172 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1174 percpu_counter_inc(&sbi
->nr_pages
[count_type
]);
1175 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1178 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1180 percpu_counter_inc(&F2FS_I(inode
)->dirty_pages
);
1181 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1182 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1185 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1187 percpu_counter_dec(&sbi
->nr_pages
[count_type
]);
1190 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1192 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1193 !S_ISLNK(inode
->i_mode
))
1196 percpu_counter_dec(&F2FS_I(inode
)->dirty_pages
);
1197 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1198 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1201 static inline s64
get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1203 return percpu_counter_sum_positive(&sbi
->nr_pages
[count_type
]);
1206 static inline s64
get_dirty_pages(struct inode
*inode
)
1208 return percpu_counter_sum_positive(&F2FS_I(inode
)->dirty_pages
);
1211 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1213 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1214 unsigned int segs
= (get_pages(sbi
, block_type
) + pages_per_sec
- 1) >>
1215 sbi
->log_blocks_per_seg
;
1217 return segs
/ sbi
->segs_per_sec
;
1220 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1222 return sbi
->total_valid_block_count
;
1225 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1227 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1229 /* return NAT or SIT bitmap */
1230 if (flag
== NAT_BITMAP
)
1231 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1232 else if (flag
== SIT_BITMAP
)
1233 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1238 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1240 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1243 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1245 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1248 if (__cp_payload(sbi
) > 0) {
1249 if (flag
== NAT_BITMAP
)
1250 return &ckpt
->sit_nat_version_bitmap
;
1252 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1254 offset
= (flag
== NAT_BITMAP
) ?
1255 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1256 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1260 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1263 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1264 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1266 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1269 * odd numbered checkpoint should at cp segment 0
1270 * and even segment must be at cp segment 1
1272 if (!(ckpt_version
& 1))
1273 start_addr
+= sbi
->blocks_per_seg
;
1278 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1280 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1283 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1284 struct inode
*inode
)
1286 block_t valid_block_count
;
1287 unsigned int valid_node_count
;
1289 spin_lock(&sbi
->stat_lock
);
1291 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1292 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1293 spin_unlock(&sbi
->stat_lock
);
1297 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1298 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1299 spin_unlock(&sbi
->stat_lock
);
1304 f2fs_i_blocks_write(inode
, 1, true);
1306 sbi
->total_valid_node_count
++;
1307 sbi
->total_valid_block_count
++;
1308 spin_unlock(&sbi
->stat_lock
);
1310 percpu_counter_inc(&sbi
->alloc_valid_block_count
);
1314 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1315 struct inode
*inode
)
1317 spin_lock(&sbi
->stat_lock
);
1319 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1320 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1321 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1323 f2fs_i_blocks_write(inode
, 1, false);
1324 sbi
->total_valid_node_count
--;
1325 sbi
->total_valid_block_count
--;
1327 spin_unlock(&sbi
->stat_lock
);
1330 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1332 return sbi
->total_valid_node_count
;
1335 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1337 percpu_counter_inc(&sbi
->total_valid_inode_count
);
1340 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1342 percpu_counter_dec(&sbi
->total_valid_inode_count
);
1345 static inline s64
valid_inode_count(struct f2fs_sb_info
*sbi
)
1347 return percpu_counter_sum_positive(&sbi
->total_valid_inode_count
);
1350 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1351 pgoff_t index
, bool for_write
)
1353 #ifdef CONFIG_F2FS_FAULT_INJECTION
1354 struct page
*page
= find_lock_page(mapping
, index
);
1358 if (time_to_inject(FAULT_PAGE_ALLOC
))
1362 return grab_cache_page(mapping
, index
);
1363 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1366 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1368 char *src_kaddr
= kmap(src
);
1369 char *dst_kaddr
= kmap(dst
);
1371 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1376 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1382 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1388 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1391 f2fs_put_page(dn
->node_page
, 1);
1392 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1393 f2fs_put_page(dn
->inode_page
, 0);
1394 dn
->node_page
= NULL
;
1395 dn
->inode_page
= NULL
;
1398 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1401 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1404 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1409 entry
= kmem_cache_alloc(cachep
, flags
);
1411 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1415 static inline struct bio
*f2fs_bio_alloc(int npages
)
1419 /* No failure on bio allocation */
1420 bio
= bio_alloc(GFP_NOIO
, npages
);
1422 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1426 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1427 unsigned long index
, void *item
)
1429 while (radix_tree_insert(root
, index
, item
))
1433 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1435 static inline bool IS_INODE(struct page
*page
)
1437 struct f2fs_node
*p
= F2FS_NODE(page
);
1438 return RAW_IS_INODE(p
);
1441 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1443 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1446 static inline block_t
datablock_addr(struct page
*node_page
,
1447 unsigned int offset
)
1449 struct f2fs_node
*raw_node
;
1451 raw_node
= F2FS_NODE(node_page
);
1452 addr_array
= blkaddr_in_node(raw_node
);
1453 return le32_to_cpu(addr_array
[offset
]);
1456 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1461 mask
= 1 << (7 - (nr
& 0x07));
1462 return mask
& *addr
;
1465 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1470 mask
= 1 << (7 - (nr
& 0x07));
1474 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1479 mask
= 1 << (7 - (nr
& 0x07));
1483 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1489 mask
= 1 << (7 - (nr
& 0x07));
1495 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1501 mask
= 1 << (7 - (nr
& 0x07));
1507 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1512 mask
= 1 << (7 - (nr
& 0x07));
1516 /* used for f2fs_inode_info->flags */
1518 FI_NEW_INODE
, /* indicate newly allocated inode */
1519 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1520 FI_AUTO_RECOVER
, /* indicate inode is recoverable */
1521 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1522 FI_INC_LINK
, /* need to increment i_nlink */
1523 FI_ACL_MODE
, /* indicate acl mode */
1524 FI_NO_ALLOC
, /* should not allocate any blocks */
1525 FI_FREE_NID
, /* free allocated nide */
1526 FI_NO_EXTENT
, /* not to use the extent cache */
1527 FI_INLINE_XATTR
, /* used for inline xattr */
1528 FI_INLINE_DATA
, /* used for inline data*/
1529 FI_INLINE_DENTRY
, /* used for inline dentry */
1530 FI_APPEND_WRITE
, /* inode has appended data */
1531 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1532 FI_NEED_IPU
, /* used for ipu per file */
1533 FI_ATOMIC_FILE
, /* indicate atomic file */
1534 FI_VOLATILE_FILE
, /* indicate volatile file */
1535 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1536 FI_DROP_CACHE
, /* drop dirty page cache */
1537 FI_DATA_EXIST
, /* indicate data exists */
1538 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1539 FI_DO_DEFRAG
, /* indicate defragment is running */
1540 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1543 static inline void __mark_inode_dirty_flag(struct inode
*inode
,
1547 case FI_INLINE_XATTR
:
1548 case FI_INLINE_DATA
:
1549 case FI_INLINE_DENTRY
:
1553 case FI_INLINE_DOTS
:
1554 mark_inode_dirty_sync(inode
);
1558 static inline void set_inode_flag(struct inode
*inode
, int flag
)
1560 if (!test_bit(flag
, &F2FS_I(inode
)->flags
))
1561 set_bit(flag
, &F2FS_I(inode
)->flags
);
1562 __mark_inode_dirty_flag(inode
, flag
, true);
1565 static inline int is_inode_flag_set(struct inode
*inode
, int flag
)
1567 return test_bit(flag
, &F2FS_I(inode
)->flags
);
1570 static inline void clear_inode_flag(struct inode
*inode
, int flag
)
1572 if (test_bit(flag
, &F2FS_I(inode
)->flags
))
1573 clear_bit(flag
, &F2FS_I(inode
)->flags
);
1574 __mark_inode_dirty_flag(inode
, flag
, false);
1577 static inline void set_acl_inode(struct inode
*inode
, umode_t mode
)
1579 F2FS_I(inode
)->i_acl_mode
= mode
;
1580 set_inode_flag(inode
, FI_ACL_MODE
);
1581 mark_inode_dirty_sync(inode
);
1584 static inline void f2fs_i_links_write(struct inode
*inode
, bool inc
)
1590 mark_inode_dirty_sync(inode
);
1593 static inline void f2fs_i_blocks_write(struct inode
*inode
,
1594 blkcnt_t diff
, bool add
)
1596 bool clean
= !is_inode_flag_set(inode
, FI_DIRTY_INODE
);
1597 bool recover
= is_inode_flag_set(inode
, FI_AUTO_RECOVER
);
1599 inode
->i_blocks
= add
? inode
->i_blocks
+ diff
:
1600 inode
->i_blocks
- diff
;
1601 mark_inode_dirty_sync(inode
);
1602 if (clean
|| recover
)
1603 set_inode_flag(inode
, FI_AUTO_RECOVER
);
1606 static inline void f2fs_i_size_write(struct inode
*inode
, loff_t i_size
)
1608 bool clean
= !is_inode_flag_set(inode
, FI_DIRTY_INODE
);
1609 bool recover
= is_inode_flag_set(inode
, FI_AUTO_RECOVER
);
1611 if (i_size_read(inode
) == i_size
)
1614 i_size_write(inode
, i_size
);
1615 mark_inode_dirty_sync(inode
);
1616 if (clean
|| recover
)
1617 set_inode_flag(inode
, FI_AUTO_RECOVER
);
1620 static inline bool f2fs_skip_inode_update(struct inode
*inode
)
1622 if (!is_inode_flag_set(inode
, FI_AUTO_RECOVER
))
1624 return F2FS_I(inode
)->last_disk_size
== i_size_read(inode
);
1627 static inline void f2fs_i_depth_write(struct inode
*inode
, unsigned int depth
)
1629 F2FS_I(inode
)->i_current_depth
= depth
;
1630 mark_inode_dirty_sync(inode
);
1633 static inline void f2fs_i_xnid_write(struct inode
*inode
, nid_t xnid
)
1635 F2FS_I(inode
)->i_xattr_nid
= xnid
;
1636 mark_inode_dirty_sync(inode
);
1639 static inline void f2fs_i_pino_write(struct inode
*inode
, nid_t pino
)
1641 F2FS_I(inode
)->i_pino
= pino
;
1642 mark_inode_dirty_sync(inode
);
1645 static inline void get_inline_info(struct inode
*inode
, struct f2fs_inode
*ri
)
1647 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
1649 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1650 set_bit(FI_INLINE_XATTR
, &fi
->flags
);
1651 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1652 set_bit(FI_INLINE_DATA
, &fi
->flags
);
1653 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1654 set_bit(FI_INLINE_DENTRY
, &fi
->flags
);
1655 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1656 set_bit(FI_DATA_EXIST
, &fi
->flags
);
1657 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1658 set_bit(FI_INLINE_DOTS
, &fi
->flags
);
1661 static inline void set_raw_inline(struct inode
*inode
, struct f2fs_inode
*ri
)
1665 if (is_inode_flag_set(inode
, FI_INLINE_XATTR
))
1666 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1667 if (is_inode_flag_set(inode
, FI_INLINE_DATA
))
1668 ri
->i_inline
|= F2FS_INLINE_DATA
;
1669 if (is_inode_flag_set(inode
, FI_INLINE_DENTRY
))
1670 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1671 if (is_inode_flag_set(inode
, FI_DATA_EXIST
))
1672 ri
->i_inline
|= F2FS_DATA_EXIST
;
1673 if (is_inode_flag_set(inode
, FI_INLINE_DOTS
))
1674 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1677 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1679 return is_inode_flag_set(inode
, FI_INLINE_XATTR
);
1682 static inline unsigned int addrs_per_inode(struct inode
*inode
)
1684 if (f2fs_has_inline_xattr(inode
))
1685 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1686 return DEF_ADDRS_PER_INODE
;
1689 static inline void *inline_xattr_addr(struct page
*page
)
1691 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1692 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1693 F2FS_INLINE_XATTR_ADDRS
]);
1696 static inline int inline_xattr_size(struct inode
*inode
)
1698 if (f2fs_has_inline_xattr(inode
))
1699 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1704 static inline int f2fs_has_inline_data(struct inode
*inode
)
1706 return is_inode_flag_set(inode
, FI_INLINE_DATA
);
1709 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1711 clear_inode_flag(inode
, FI_INLINE_DATA
);
1712 clear_inode_flag(inode
, FI_DATA_EXIST
);
1715 static inline int f2fs_exist_data(struct inode
*inode
)
1717 return is_inode_flag_set(inode
, FI_DATA_EXIST
);
1720 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1722 return is_inode_flag_set(inode
, FI_INLINE_DOTS
);
1725 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1727 return is_inode_flag_set(inode
, FI_ATOMIC_FILE
);
1730 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1732 return is_inode_flag_set(inode
, FI_VOLATILE_FILE
);
1735 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1737 return is_inode_flag_set(inode
, FI_FIRST_BLOCK_WRITTEN
);
1740 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1742 return is_inode_flag_set(inode
, FI_DROP_CACHE
);
1745 static inline void *inline_data_addr(struct page
*page
)
1747 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1748 return (void *)&(ri
->i_addr
[1]);
1751 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1753 return is_inode_flag_set(inode
, FI_INLINE_DENTRY
);
1756 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1758 if (!f2fs_has_inline_dentry(dir
))
1762 static inline int is_file(struct inode
*inode
, int type
)
1764 return F2FS_I(inode
)->i_advise
& type
;
1767 static inline void set_file(struct inode
*inode
, int type
)
1769 F2FS_I(inode
)->i_advise
|= type
;
1770 mark_inode_dirty_sync(inode
);
1773 static inline void clear_file(struct inode
*inode
, int type
)
1775 F2FS_I(inode
)->i_advise
&= ~type
;
1776 mark_inode_dirty_sync(inode
);
1779 static inline int f2fs_readonly(struct super_block
*sb
)
1781 return sb
->s_flags
& MS_RDONLY
;
1784 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1786 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1789 static inline bool is_dot_dotdot(const struct qstr
*str
)
1791 if (str
->len
== 1 && str
->name
[0] == '.')
1794 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1800 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1802 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1803 is_inode_flag_set(inode
, FI_NO_EXTENT
))
1806 return S_ISREG(inode
->i_mode
);
1809 static inline void *f2fs_kmalloc(size_t size
, gfp_t flags
)
1811 #ifdef CONFIG_F2FS_FAULT_INJECTION
1812 if (time_to_inject(FAULT_KMALLOC
))
1815 return kmalloc(size
, flags
);
1818 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1822 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1824 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1828 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1832 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1834 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1838 #define get_inode_mode(i) \
1839 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
1840 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1842 /* get offset of first page in next direct node */
1843 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1844 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1845 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1846 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1851 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1852 void truncate_data_blocks(struct dnode_of_data
*);
1853 int truncate_blocks(struct inode
*, u64
, bool);
1854 int f2fs_truncate(struct inode
*);
1855 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1856 int f2fs_setattr(struct dentry
*, struct iattr
*);
1857 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1858 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1859 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1860 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1865 void f2fs_set_inode_flags(struct inode
*);
1866 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1867 int try_to_free_nats(struct f2fs_sb_info
*, int);
1868 int update_inode(struct inode
*, struct page
*);
1869 int update_inode_page(struct inode
*);
1870 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1871 void f2fs_evict_inode(struct inode
*);
1872 void handle_failed_inode(struct inode
*);
1877 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1882 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1883 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1884 unsigned char get_de_type(struct f2fs_dir_entry
*);
1885 struct f2fs_dir_entry
*find_target_dentry(struct fscrypt_name
*,
1886 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1887 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1888 unsigned int, struct fscrypt_str
*);
1889 void do_make_empty_dir(struct inode
*, struct inode
*,
1890 struct f2fs_dentry_ptr
*);
1891 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1892 const struct qstr
*, struct page
*);
1893 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1894 int room_for_filename(const void *, int, int);
1895 void f2fs_drop_nlink(struct inode
*, struct inode
*);
1896 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1898 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1899 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1900 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1901 struct page
*, struct inode
*);
1902 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1903 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1904 const struct qstr
*, f2fs_hash_t
, unsigned int);
1905 int f2fs_add_regular_entry(struct inode
*, const struct qstr
*,
1906 struct inode
*, nid_t
, umode_t
);
1907 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1909 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1911 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1912 bool f2fs_empty_dir(struct inode
*);
1914 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1916 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1917 inode
, inode
->i_ino
, inode
->i_mode
);
1923 void f2fs_inode_synced(struct inode
*);
1924 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1925 int f2fs_sync_fs(struct super_block
*, int);
1926 extern __printf(3, 4)
1927 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1928 int sanity_check_ckpt(struct f2fs_sb_info
*sbi
);
1933 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1938 struct dnode_of_data
;
1941 bool available_free_memory(struct f2fs_sb_info
*, int);
1942 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1943 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1944 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1945 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1946 pgoff_t
get_next_page_offset(struct dnode_of_data
*, pgoff_t
);
1947 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1948 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1949 int truncate_xattr_node(struct inode
*, struct page
*);
1950 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1951 int remove_inode_page(struct inode
*);
1952 struct page
*new_inode_page(struct inode
*);
1953 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1954 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1955 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1956 struct page
*get_node_page_ra(struct page
*, int);
1957 void move_node_page(struct page
*, int);
1958 int fsync_node_pages(struct f2fs_sb_info
*, struct inode
*,
1959 struct writeback_control
*, bool);
1960 int sync_node_pages(struct f2fs_sb_info
*, struct writeback_control
*);
1961 void build_free_nids(struct f2fs_sb_info
*);
1962 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1963 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1964 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1965 int try_to_free_nids(struct f2fs_sb_info
*, int);
1966 void recover_inline_xattr(struct inode
*, struct page
*);
1967 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1968 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1969 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1970 struct f2fs_summary_block
*);
1971 void flush_nat_entries(struct f2fs_sb_info
*);
1972 int build_node_manager(struct f2fs_sb_info
*);
1973 void destroy_node_manager(struct f2fs_sb_info
*);
1974 int __init
create_node_manager_caches(void);
1975 void destroy_node_manager_caches(void);
1980 void register_inmem_page(struct inode
*, struct page
*);
1981 void drop_inmem_pages(struct inode
*);
1982 int commit_inmem_pages(struct inode
*);
1983 void f2fs_balance_fs(struct f2fs_sb_info
*, bool);
1984 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1985 int f2fs_issue_flush(struct f2fs_sb_info
*);
1986 int create_flush_cmd_control(struct f2fs_sb_info
*);
1987 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1988 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1989 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
1990 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1991 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1992 void release_discard_addrs(struct f2fs_sb_info
*);
1993 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1994 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1995 void allocate_new_segments(struct f2fs_sb_info
*);
1996 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1997 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1998 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1999 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
2000 void write_node_page(unsigned int, struct f2fs_io_info
*);
2001 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
2002 void rewrite_data_page(struct f2fs_io_info
*);
2003 void __f2fs_replace_block(struct f2fs_sb_info
*, struct f2fs_summary
*,
2004 block_t
, block_t
, bool, bool);
2005 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
2006 block_t
, block_t
, unsigned char, bool, bool);
2007 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
2008 block_t
, block_t
*, struct f2fs_summary
*, int);
2009 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
, bool);
2010 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
2011 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
2012 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
2013 int lookup_journal_in_cursum(struct f2fs_journal
*, int, unsigned int, int);
2014 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
2015 int build_segment_manager(struct f2fs_sb_info
*);
2016 void destroy_segment_manager(struct f2fs_sb_info
*);
2017 int __init
create_segment_manager_caches(void);
2018 void destroy_segment_manager_caches(void);
2023 void f2fs_stop_checkpoint(struct f2fs_sb_info
*, bool);
2024 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
2025 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
2026 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
2027 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
2028 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
2029 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
2030 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
2031 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
2032 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
2033 void release_ino_entry(struct f2fs_sb_info
*, bool);
2034 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
2035 int f2fs_sync_inode_meta(struct f2fs_sb_info
*);
2036 int acquire_orphan_inode(struct f2fs_sb_info
*);
2037 void release_orphan_inode(struct f2fs_sb_info
*);
2038 void add_orphan_inode(struct inode
*);
2039 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
2040 int recover_orphan_inodes(struct f2fs_sb_info
*);
2041 int get_valid_checkpoint(struct f2fs_sb_info
*);
2042 void update_dirty_page(struct inode
*, struct page
*);
2043 void remove_dirty_inode(struct inode
*);
2044 int sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
2045 int write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
2046 void init_ino_entry_info(struct f2fs_sb_info
*);
2047 int __init
create_checkpoint_caches(void);
2048 void destroy_checkpoint_caches(void);
2053 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
2054 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info
*, struct inode
*,
2055 struct page
*, nid_t
, enum page_type
, int);
2056 void f2fs_flush_merged_bios(struct f2fs_sb_info
*);
2057 int f2fs_submit_page_bio(struct f2fs_io_info
*);
2058 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
2059 void set_data_blkaddr(struct dnode_of_data
*);
2060 void f2fs_update_data_blkaddr(struct dnode_of_data
*, block_t
);
2061 int reserve_new_blocks(struct dnode_of_data
*, blkcnt_t
);
2062 int reserve_new_block(struct dnode_of_data
*);
2063 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
2064 ssize_t
f2fs_preallocate_blocks(struct kiocb
*, struct iov_iter
*);
2065 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
2066 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
2067 struct page
*find_data_page(struct inode
*, pgoff_t
);
2068 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
2069 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
2070 int do_write_data_page(struct f2fs_io_info
*);
2071 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
2072 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
2073 void f2fs_set_page_dirty_nobuffers(struct page
*);
2074 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
2075 int f2fs_release_page(struct page
*, gfp_t
);
2080 int start_gc_thread(struct f2fs_sb_info
*);
2081 void stop_gc_thread(struct f2fs_sb_info
*);
2082 block_t
start_bidx_of_node(unsigned int, struct inode
*);
2083 int f2fs_gc(struct f2fs_sb_info
*, bool);
2084 void build_gc_manager(struct f2fs_sb_info
*);
2089 int recover_fsync_data(struct f2fs_sb_info
*, bool);
2090 bool space_for_roll_forward(struct f2fs_sb_info
*);
2095 #ifdef CONFIG_F2FS_STAT_FS
2096 struct f2fs_stat_info
{
2097 struct list_head stat_list
;
2098 struct f2fs_sb_info
*sbi
;
2099 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
2100 int main_area_segs
, main_area_sections
, main_area_zones
;
2101 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
2102 unsigned long long hit_total
, total_ext
;
2103 int ext_tree
, zombie_tree
, ext_node
;
2104 s64 ndirty_node
, ndirty_dent
, ndirty_meta
, ndirty_data
, inmem_pages
;
2105 unsigned int ndirty_dirs
, ndirty_files
, ndirty_all
;
2106 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
2107 int total_count
, utilization
;
2109 int inline_xattr
, inline_inode
, inline_dir
, orphans
;
2110 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
2111 unsigned int bimodal
, avg_vblocks
;
2112 int util_free
, util_valid
, util_invalid
;
2113 int rsvd_segs
, overp_segs
;
2114 int dirty_count
, node_pages
, meta_pages
;
2115 int prefree_count
, call_count
, cp_count
, bg_cp_count
;
2116 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
2117 int bg_node_segs
, bg_data_segs
;
2118 int tot_blks
, data_blks
, node_blks
;
2119 int bg_data_blks
, bg_node_blks
;
2120 int curseg
[NR_CURSEG_TYPE
];
2121 int cursec
[NR_CURSEG_TYPE
];
2122 int curzone
[NR_CURSEG_TYPE
];
2124 unsigned int segment_count
[2];
2125 unsigned int block_count
[2];
2126 unsigned int inplace_count
;
2127 unsigned long long base_mem
, cache_mem
, page_mem
;
2130 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
2132 return (struct f2fs_stat_info
*)sbi
->stat_info
;
2135 #define stat_inc_cp_count(si) ((si)->cp_count++)
2136 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2137 #define stat_inc_call_count(si) ((si)->call_count++)
2138 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2139 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2140 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2141 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2142 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2143 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2144 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2145 #define stat_inc_inline_xattr(inode) \
2147 if (f2fs_has_inline_xattr(inode)) \
2148 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2150 #define stat_dec_inline_xattr(inode) \
2152 if (f2fs_has_inline_xattr(inode)) \
2153 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2155 #define stat_inc_inline_inode(inode) \
2157 if (f2fs_has_inline_data(inode)) \
2158 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2160 #define stat_dec_inline_inode(inode) \
2162 if (f2fs_has_inline_data(inode)) \
2163 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2165 #define stat_inc_inline_dir(inode) \
2167 if (f2fs_has_inline_dentry(inode)) \
2168 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2170 #define stat_dec_inline_dir(inode) \
2172 if (f2fs_has_inline_dentry(inode)) \
2173 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2175 #define stat_inc_seg_type(sbi, curseg) \
2176 ((sbi)->segment_count[(curseg)->alloc_type]++)
2177 #define stat_inc_block_count(sbi, curseg) \
2178 ((sbi)->block_count[(curseg)->alloc_type]++)
2179 #define stat_inc_inplace_blocks(sbi) \
2180 (atomic_inc(&(sbi)->inplace_count))
2181 #define stat_inc_seg_count(sbi, type, gc_type) \
2183 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2185 if (type == SUM_TYPE_DATA) { \
2187 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2190 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2194 #define stat_inc_tot_blk_count(si, blks) \
2195 (si->tot_blks += (blks))
2197 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2199 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2200 stat_inc_tot_blk_count(si, blks); \
2201 si->data_blks += (blks); \
2202 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2205 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2207 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2208 stat_inc_tot_blk_count(si, blks); \
2209 si->node_blks += (blks); \
2210 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2213 int f2fs_build_stats(struct f2fs_sb_info
*);
2214 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2215 int __init
f2fs_create_root_stats(void);
2216 void f2fs_destroy_root_stats(void);
2218 #define stat_inc_cp_count(si)
2219 #define stat_inc_bg_cp_count(si)
2220 #define stat_inc_call_count(si)
2221 #define stat_inc_bggc_count(si)
2222 #define stat_inc_dirty_inode(sbi, type)
2223 #define stat_dec_dirty_inode(sbi, type)
2224 #define stat_inc_total_hit(sb)
2225 #define stat_inc_rbtree_node_hit(sb)
2226 #define stat_inc_largest_node_hit(sbi)
2227 #define stat_inc_cached_node_hit(sbi)
2228 #define stat_inc_inline_xattr(inode)
2229 #define stat_dec_inline_xattr(inode)
2230 #define stat_inc_inline_inode(inode)
2231 #define stat_dec_inline_inode(inode)
2232 #define stat_inc_inline_dir(inode)
2233 #define stat_dec_inline_dir(inode)
2234 #define stat_inc_seg_type(sbi, curseg)
2235 #define stat_inc_block_count(sbi, curseg)
2236 #define stat_inc_inplace_blocks(sbi)
2237 #define stat_inc_seg_count(sbi, type, gc_type)
2238 #define stat_inc_tot_blk_count(si, blks)
2239 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2240 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2242 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2243 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2244 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2245 static inline void f2fs_destroy_root_stats(void) { }
2248 extern const struct file_operations f2fs_dir_operations
;
2249 extern const struct file_operations f2fs_file_operations
;
2250 extern const struct inode_operations f2fs_file_inode_operations
;
2251 extern const struct address_space_operations f2fs_dblock_aops
;
2252 extern const struct address_space_operations f2fs_node_aops
;
2253 extern const struct address_space_operations f2fs_meta_aops
;
2254 extern const struct inode_operations f2fs_dir_inode_operations
;
2255 extern const struct inode_operations f2fs_symlink_inode_operations
;
2256 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2257 extern const struct inode_operations f2fs_special_inode_operations
;
2258 extern struct kmem_cache
*inode_entry_slab
;
2263 bool f2fs_may_inline_data(struct inode
*);
2264 bool f2fs_may_inline_dentry(struct inode
*);
2265 void read_inline_data(struct page
*, struct page
*);
2266 bool truncate_inline_inode(struct page
*, u64
);
2267 int f2fs_read_inline_data(struct inode
*, struct page
*);
2268 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2269 int f2fs_convert_inline_inode(struct inode
*);
2270 int f2fs_write_inline_data(struct inode
*, struct page
*);
2271 bool recover_inline_data(struct inode
*, struct page
*);
2272 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2273 struct fscrypt_name
*, struct page
**);
2274 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2275 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2277 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2278 struct inode
*, struct inode
*);
2279 bool f2fs_empty_inline_dir(struct inode
*);
2280 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2281 struct fscrypt_str
*);
2282 int f2fs_inline_data_fiemap(struct inode
*,
2283 struct fiemap_extent_info
*, __u64
, __u64
);
2288 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2289 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2290 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2291 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2296 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2297 bool f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2298 unsigned int f2fs_destroy_extent_node(struct inode
*);
2299 void f2fs_destroy_extent_tree(struct inode
*);
2300 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2301 void f2fs_update_extent_cache(struct dnode_of_data
*);
2302 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2303 pgoff_t
, block_t
, unsigned int);
2304 void init_extent_cache_info(struct f2fs_sb_info
*);
2305 int __init
create_extent_cache(void);
2306 void destroy_extent_cache(void);
2311 static inline bool f2fs_encrypted_inode(struct inode
*inode
)
2313 return file_is_encrypt(inode
);
2316 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2318 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2319 file_set_encrypt(inode
);
2323 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2325 return bio
->bi_private
!= NULL
;
2328 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2330 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2333 static inline int f2fs_sb_mounted_hmsmr(struct super_block
*sb
)
2335 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_HMSMR
);
2338 static inline void set_opt_mode(struct f2fs_sb_info
*sbi
, unsigned int mt
)
2340 clear_opt(sbi
, ADAPTIVE
);
2341 clear_opt(sbi
, LFS
);
2344 case F2FS_MOUNT_ADAPTIVE
:
2345 set_opt(sbi
, ADAPTIVE
);
2347 case F2FS_MOUNT_LFS
:
2353 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2355 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2356 umode_t mode
= inode
->i_mode
;
2358 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2364 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2365 #define fscrypt_set_d_op(i)
2366 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2367 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2368 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2369 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2370 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2371 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2372 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2373 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2374 #define fscrypt_process_policy fscrypt_notsupp_process_policy
2375 #define fscrypt_get_policy fscrypt_notsupp_get_policy
2376 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2377 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2378 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2379 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2380 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2381 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2382 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2383 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2384 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2385 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2386 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk