4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
14 #include <linux/types.h>
15 #include <linux/page-flags.h>
16 #include <linux/buffer_head.h>
17 #include <linux/slab.h>
18 #include <linux/crc32.h>
19 #include <linux/magic.h>
20 #include <linux/kobject.h>
21 #include <linux/sched.h>
22 #include <linux/vmalloc.h>
23 #include <linux/bio.h>
24 #include <linux/blkdev.h>
25 #include <linux/fscrypto.h>
26 #include <crypto/hash.h>
28 #ifdef CONFIG_F2FS_CHECK_FS
29 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
31 #define f2fs_bug_on(sbi, condition) \
33 if (unlikely(condition)) { \
35 set_sbi_flag(sbi, SBI_NEED_FSCK); \
40 #ifdef CONFIG_F2FS_FAULT_INJECTION
51 struct f2fs_fault_info
{
53 unsigned int inject_rate
;
54 unsigned int inject_type
;
57 extern struct f2fs_fault_info f2fs_fault
;
58 extern char *fault_name
[FAULT_MAX
];
59 #define IS_FAULT_SET(type) (f2fs_fault.inject_type & (1 << (type)))
61 static inline bool time_to_inject(int type
)
63 if (!f2fs_fault
.inject_rate
)
65 if (type
== FAULT_KMALLOC
&& !IS_FAULT_SET(type
))
67 else if (type
== FAULT_PAGE_ALLOC
&& !IS_FAULT_SET(type
))
69 else if (type
== FAULT_ALLOC_NID
&& !IS_FAULT_SET(type
))
71 else if (type
== FAULT_ORPHAN
&& !IS_FAULT_SET(type
))
73 else if (type
== FAULT_BLOCK
&& !IS_FAULT_SET(type
))
75 else if (type
== FAULT_DIR_DEPTH
&& !IS_FAULT_SET(type
))
78 atomic_inc(&f2fs_fault
.inject_ops
);
79 if (atomic_read(&f2fs_fault
.inject_ops
) >= f2fs_fault
.inject_rate
) {
80 atomic_set(&f2fs_fault
.inject_ops
, 0);
81 printk("%sF2FS-fs : inject %s in %pF\n",
84 __builtin_return_address(0));
94 #define F2FS_MOUNT_BG_GC 0x00000001
95 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
96 #define F2FS_MOUNT_DISCARD 0x00000004
97 #define F2FS_MOUNT_NOHEAP 0x00000008
98 #define F2FS_MOUNT_XATTR_USER 0x00000010
99 #define F2FS_MOUNT_POSIX_ACL 0x00000020
100 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
101 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
102 #define F2FS_MOUNT_INLINE_DATA 0x00000100
103 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
104 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
105 #define F2FS_MOUNT_NOBARRIER 0x00000800
106 #define F2FS_MOUNT_FASTBOOT 0x00001000
107 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
108 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
109 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
110 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
112 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
113 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
114 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
116 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
117 typecheck(unsigned long long, b) && \
118 ((long long)((a) - (b)) > 0))
120 typedef u32 block_t
; /*
121 * should not change u32, since it is the on-disk block
122 * address format, __le32.
126 struct f2fs_mount_info
{
130 #define F2FS_FEATURE_ENCRYPT 0x0001
132 #define F2FS_HAS_FEATURE(sb, mask) \
133 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
134 #define F2FS_SET_FEATURE(sb, mask) \
135 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
136 #define F2FS_CLEAR_FEATURE(sb, mask) \
137 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
140 * For checkpoint manager
155 #define DEF_BATCHED_TRIM_SECTIONS 32
156 #define BATCHED_TRIM_SEGMENTS(sbi) \
157 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
158 #define BATCHED_TRIM_BLOCKS(sbi) \
159 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
160 #define DEF_CP_INTERVAL 60 /* 60 secs */
161 #define DEF_IDLE_INTERVAL 120 /* 2 mins */
172 * For CP/NAT/SIT/SSA readahead
182 /* for the list of ino */
184 ORPHAN_INO
, /* for orphan ino list */
185 APPEND_INO
, /* for append ino list */
186 UPDATE_INO
, /* for update ino list */
187 MAX_INO_ENTRY
, /* max. list */
191 struct list_head list
; /* list head */
192 nid_t ino
; /* inode number */
195 /* for the list of inodes to be GCed */
197 struct list_head list
; /* list head */
198 struct inode
*inode
; /* vfs inode pointer */
201 /* for the list of blockaddresses to be discarded */
202 struct discard_entry
{
203 struct list_head list
; /* list head */
204 block_t blkaddr
; /* block address to be discarded */
205 int len
; /* # of consecutive blocks of the discard */
208 /* for the list of fsync inodes, used only during recovery */
209 struct fsync_inode_entry
{
210 struct list_head list
; /* list head */
211 struct inode
*inode
; /* vfs inode pointer */
212 block_t blkaddr
; /* block address locating the last fsync */
213 block_t last_dentry
; /* block address locating the last dentry */
216 #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
217 #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
219 #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
220 #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
221 #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
222 #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
224 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
225 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
227 static inline int update_nats_in_cursum(struct f2fs_journal
*journal
, int i
)
229 int before
= nats_in_cursum(journal
);
230 journal
->n_nats
= cpu_to_le16(before
+ i
);
234 static inline int update_sits_in_cursum(struct f2fs_journal
*journal
, int i
)
236 int before
= sits_in_cursum(journal
);
237 journal
->n_sits
= cpu_to_le16(before
+ i
);
241 static inline bool __has_cursum_space(struct f2fs_journal
*journal
,
244 if (type
== NAT_JOURNAL
)
245 return size
<= MAX_NAT_JENTRIES(journal
);
246 return size
<= MAX_SIT_JENTRIES(journal
);
252 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
253 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
254 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
256 #define F2FS_IOCTL_MAGIC 0xf5
257 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
258 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
259 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
260 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
261 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
262 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
263 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
264 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
266 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
267 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
268 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
271 * should be same as XFS_IOC_GOINGDOWN.
272 * Flags for going down operation used by FS_IOC_GOINGDOWN
274 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
275 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
276 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
277 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
278 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
280 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
282 * ioctl commands in 32 bit emulation
284 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
285 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
286 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
289 struct f2fs_defragment
{
295 * For INODE and NODE manager
297 /* for directory operations */
298 struct f2fs_dentry_ptr
{
301 struct f2fs_dir_entry
*dentry
;
302 __u8 (*filename
)[F2FS_SLOT_LEN
];
306 static inline void make_dentry_ptr(struct inode
*inode
,
307 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
312 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
313 d
->max
= NR_DENTRY_IN_BLOCK
;
314 d
->bitmap
= &t
->dentry_bitmap
;
315 d
->dentry
= t
->dentry
;
316 d
->filename
= t
->filename
;
318 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
319 d
->max
= NR_INLINE_DENTRY
;
320 d
->bitmap
= &t
->dentry_bitmap
;
321 d
->dentry
= t
->dentry
;
322 d
->filename
= t
->filename
;
327 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
328 * as its node offset to distinguish from index node blocks.
329 * But some bits are used to mark the node block.
331 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
334 ALLOC_NODE
, /* allocate a new node page if needed */
335 LOOKUP_NODE
, /* look up a node without readahead */
337 * look up a node with readahead called
342 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
344 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
346 /* vector size for gang look-up from extent cache that consists of radix tree */
347 #define EXT_TREE_VEC_SIZE 64
349 /* for in-memory extent cache entry */
350 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
352 /* number of extent info in extent cache we try to shrink */
353 #define EXTENT_CACHE_SHRINK_NUMBER 128
356 unsigned int fofs
; /* start offset in a file */
357 u32 blk
; /* start block address of the extent */
358 unsigned int len
; /* length of the extent */
362 struct rb_node rb_node
; /* rb node located in rb-tree */
363 struct list_head list
; /* node in global extent list of sbi */
364 struct extent_info ei
; /* extent info */
365 struct extent_tree
*et
; /* extent tree pointer */
369 nid_t ino
; /* inode number */
370 struct rb_root root
; /* root of extent info rb-tree */
371 struct extent_node
*cached_en
; /* recently accessed extent node */
372 struct extent_info largest
; /* largested extent info */
373 struct list_head list
; /* to be used by sbi->zombie_list */
374 rwlock_t lock
; /* protect extent info rb-tree */
375 atomic_t node_cnt
; /* # of extent node in rb-tree*/
379 * This structure is taken from ext4_map_blocks.
381 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
383 #define F2FS_MAP_NEW (1 << BH_New)
384 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
385 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
386 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
389 struct f2fs_map_blocks
{
393 unsigned int m_flags
;
394 pgoff_t
*m_next_pgofs
; /* point next possible non-hole pgofs */
397 /* for flag in get_data_block */
398 #define F2FS_GET_BLOCK_READ 0
399 #define F2FS_GET_BLOCK_DIO 1
400 #define F2FS_GET_BLOCK_FIEMAP 2
401 #define F2FS_GET_BLOCK_BMAP 3
402 #define F2FS_GET_BLOCK_PRE_DIO 4
403 #define F2FS_GET_BLOCK_PRE_AIO 5
406 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
408 #define FADVISE_COLD_BIT 0x01
409 #define FADVISE_LOST_PINO_BIT 0x02
410 #define FADVISE_ENCRYPT_BIT 0x04
411 #define FADVISE_ENC_NAME_BIT 0x08
413 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
414 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
415 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
416 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
417 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
418 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
419 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
420 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
421 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
422 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
423 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
425 #define DEF_DIR_LEVEL 0
427 struct f2fs_inode_info
{
428 struct inode vfs_inode
; /* serve a vfs inode */
429 unsigned long i_flags
; /* keep an inode flags for ioctl */
430 unsigned char i_advise
; /* use to give file attribute hints */
431 unsigned char i_dir_level
; /* use for dentry level for large dir */
432 unsigned int i_current_depth
; /* use only in directory structure */
433 unsigned int i_pino
; /* parent inode number */
434 umode_t i_acl_mode
; /* keep file acl mode temporarily */
436 /* Use below internally in f2fs*/
437 unsigned long flags
; /* use to pass per-file flags */
438 struct rw_semaphore i_sem
; /* protect fi info */
439 atomic_t dirty_pages
; /* # of dirty pages */
440 f2fs_hash_t chash
; /* hash value of given file name */
441 unsigned int clevel
; /* maximum level of given file name */
442 nid_t i_xattr_nid
; /* node id that contains xattrs */
443 unsigned long long xattr_ver
; /* cp version of xattr modification */
445 struct list_head dirty_list
; /* linked in global dirty list */
446 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
447 struct mutex inmem_lock
; /* lock for inmemory pages */
448 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
451 static inline void get_extent_info(struct extent_info
*ext
,
452 struct f2fs_extent
*i_ext
)
454 ext
->fofs
= le32_to_cpu(i_ext
->fofs
);
455 ext
->blk
= le32_to_cpu(i_ext
->blk
);
456 ext
->len
= le32_to_cpu(i_ext
->len
);
459 static inline void set_raw_extent(struct extent_info
*ext
,
460 struct f2fs_extent
*i_ext
)
462 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
463 i_ext
->blk
= cpu_to_le32(ext
->blk
);
464 i_ext
->len
= cpu_to_le32(ext
->len
);
467 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
468 u32 blk
, unsigned int len
)
475 static inline bool __is_extent_same(struct extent_info
*ei1
,
476 struct extent_info
*ei2
)
478 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
479 ei1
->len
== ei2
->len
);
482 static inline bool __is_extent_mergeable(struct extent_info
*back
,
483 struct extent_info
*front
)
485 return (back
->fofs
+ back
->len
== front
->fofs
&&
486 back
->blk
+ back
->len
== front
->blk
);
489 static inline bool __is_back_mergeable(struct extent_info
*cur
,
490 struct extent_info
*back
)
492 return __is_extent_mergeable(back
, cur
);
495 static inline bool __is_front_mergeable(struct extent_info
*cur
,
496 struct extent_info
*front
)
498 return __is_extent_mergeable(cur
, front
);
501 static inline void __try_update_largest_extent(struct extent_tree
*et
,
502 struct extent_node
*en
)
504 if (en
->ei
.len
> et
->largest
.len
)
505 et
->largest
= en
->ei
;
508 struct f2fs_nm_info
{
509 block_t nat_blkaddr
; /* base disk address of NAT */
510 nid_t max_nid
; /* maximum possible node ids */
511 nid_t available_nids
; /* maximum available node ids */
512 nid_t next_scan_nid
; /* the next nid to be scanned */
513 unsigned int ram_thresh
; /* control the memory footprint */
514 unsigned int ra_nid_pages
; /* # of nid pages to be readaheaded */
515 unsigned int dirty_nats_ratio
; /* control dirty nats ratio threshold */
517 /* NAT cache management */
518 struct radix_tree_root nat_root
;/* root of the nat entry cache */
519 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
520 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
521 struct list_head nat_entries
; /* cached nat entry list (clean) */
522 unsigned int nat_cnt
; /* the # of cached nat entries */
523 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
525 /* free node ids management */
526 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
527 struct list_head free_nid_list
; /* a list for free nids */
528 spinlock_t free_nid_list_lock
; /* protect free nid list */
529 unsigned int fcnt
; /* the number of free node id */
530 struct mutex build_lock
; /* lock for build free nids */
533 char *nat_bitmap
; /* NAT bitmap pointer */
534 int bitmap_size
; /* bitmap size */
538 * this structure is used as one of function parameters.
539 * all the information are dedicated to a given direct node block determined
540 * by the data offset in a file.
542 struct dnode_of_data
{
543 struct inode
*inode
; /* vfs inode pointer */
544 struct page
*inode_page
; /* its inode page, NULL is possible */
545 struct page
*node_page
; /* cached direct node page */
546 nid_t nid
; /* node id of the direct node block */
547 unsigned int ofs_in_node
; /* data offset in the node page */
548 bool inode_page_locked
; /* inode page is locked or not */
549 bool node_changed
; /* is node block changed */
550 char cur_level
; /* level of hole node page */
551 char max_level
; /* level of current page located */
552 block_t data_blkaddr
; /* block address of the node block */
555 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
556 struct page
*ipage
, struct page
*npage
, nid_t nid
)
558 memset(dn
, 0, sizeof(*dn
));
560 dn
->inode_page
= ipage
;
561 dn
->node_page
= npage
;
568 * By default, there are 6 active log areas across the whole main area.
569 * When considering hot and cold data separation to reduce cleaning overhead,
570 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
572 * In the current design, you should not change the numbers intentionally.
573 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
574 * logs individually according to the underlying devices. (default: 6)
575 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
576 * data and 8 for node logs.
578 #define NR_CURSEG_DATA_TYPE (3)
579 #define NR_CURSEG_NODE_TYPE (3)
580 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
583 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
584 CURSEG_WARM_DATA
, /* data blocks */
585 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
586 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
587 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
588 CURSEG_COLD_NODE
, /* indirect node blocks */
590 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
594 struct completion wait
;
595 struct llist_node llnode
;
599 struct flush_cmd_control
{
600 struct task_struct
*f2fs_issue_flush
; /* flush thread */
601 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
602 struct llist_head issue_list
; /* list for command issue */
603 struct llist_node
*dispatch_list
; /* list for command dispatch */
606 struct f2fs_sm_info
{
607 struct sit_info
*sit_info
; /* whole segment information */
608 struct free_segmap_info
*free_info
; /* free segment information */
609 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
610 struct curseg_info
*curseg_array
; /* active segment information */
612 block_t seg0_blkaddr
; /* block address of 0'th segment */
613 block_t main_blkaddr
; /* start block address of main area */
614 block_t ssa_blkaddr
; /* start block address of SSA area */
616 unsigned int segment_count
; /* total # of segments */
617 unsigned int main_segments
; /* # of segments in main area */
618 unsigned int reserved_segments
; /* # of reserved segments */
619 unsigned int ovp_segments
; /* # of overprovision segments */
621 /* a threshold to reclaim prefree segments */
622 unsigned int rec_prefree_segments
;
624 /* for small discard management */
625 struct list_head discard_list
; /* 4KB discard list */
626 int nr_discards
; /* # of discards in the list */
627 int max_discards
; /* max. discards to be issued */
629 /* for batched trimming */
630 unsigned int trim_sections
; /* # of sections to trim */
632 struct list_head sit_entry_set
; /* sit entry set list */
634 unsigned int ipu_policy
; /* in-place-update policy */
635 unsigned int min_ipu_util
; /* in-place-update threshold */
636 unsigned int min_fsync_blocks
; /* threshold for fsync */
638 /* for flush command control */
639 struct flush_cmd_control
*cmd_control_info
;
647 * COUNT_TYPE for monitoring
649 * f2fs monitors the number of several block types such as on-writeback,
650 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
662 * The below are the page types of bios used in submit_bio().
663 * The available types are:
664 * DATA User data pages. It operates as async mode.
665 * NODE Node pages. It operates as async mode.
666 * META FS metadata pages such as SIT, NAT, CP.
667 * NR_PAGE_TYPE The number of page types.
668 * META_FLUSH Make sure the previous pages are written
669 * with waiting the bio's completion
670 * ... Only can be used with META.
672 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
679 INMEM
, /* the below types are used by tracepoints only. */
686 struct f2fs_io_info
{
687 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
688 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
689 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
690 block_t new_blkaddr
; /* new block address to be written */
691 block_t old_blkaddr
; /* old block address before Cow */
692 struct page
*page
; /* page to be written */
693 struct page
*encrypted_page
; /* encrypted page */
696 #define is_read_io(rw) (((rw) & 1) == READ)
697 struct f2fs_bio_info
{
698 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
699 struct bio
*bio
; /* bios to merge */
700 sector_t last_block_in_bio
; /* last block number */
701 struct f2fs_io_info fio
; /* store buffered io info. */
702 struct rw_semaphore io_rwsem
; /* blocking op for bio */
706 DIR_INODE
, /* for dirty dir inode */
707 FILE_INODE
, /* for dirty regular/symlink inode */
711 /* for inner inode cache management */
712 struct inode_management
{
713 struct radix_tree_root ino_root
; /* ino entry array */
714 spinlock_t ino_lock
; /* for ino entry lock */
715 struct list_head ino_list
; /* inode list head */
716 unsigned long ino_num
; /* number of entries */
719 /* For s_flag in struct f2fs_sb_info */
721 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
722 SBI_IS_CLOSE
, /* specify unmounting */
723 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
724 SBI_POR_DOING
, /* recovery is doing or not */
725 SBI_NEED_SB_WRITE
, /* need to recover superblock */
734 #ifdef CONFIG_F2FS_FS_ENCRYPTION
735 #define F2FS_KEY_DESC_PREFIX "f2fs:"
736 #define F2FS_KEY_DESC_PREFIX_SIZE 5
738 struct f2fs_sb_info
{
739 struct super_block
*sb
; /* pointer to VFS super block */
740 struct proc_dir_entry
*s_proc
; /* proc entry */
741 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
742 int valid_super_block
; /* valid super block no */
743 int s_flag
; /* flags for sbi */
745 #ifdef CONFIG_F2FS_FS_ENCRYPTION
746 u8 key_prefix
[F2FS_KEY_DESC_PREFIX_SIZE
];
749 /* for node-related operations */
750 struct f2fs_nm_info
*nm_info
; /* node manager */
751 struct inode
*node_inode
; /* cache node blocks */
753 /* for segment-related operations */
754 struct f2fs_sm_info
*sm_info
; /* segment manager */
756 /* for bio operations */
757 struct f2fs_bio_info read_io
; /* for read bios */
758 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
761 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
762 struct inode
*meta_inode
; /* cache meta blocks */
763 struct mutex cp_mutex
; /* checkpoint procedure lock */
764 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
765 struct rw_semaphore node_write
; /* locking node writes */
766 struct mutex writepages
; /* mutex for writepages() */
767 wait_queue_head_t cp_wait
;
768 unsigned long last_time
[MAX_TIME
]; /* to store time in jiffies */
769 long interval_time
[MAX_TIME
]; /* to store thresholds */
771 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
773 /* for orphan inode, use 0'th array */
774 unsigned int max_orphans
; /* max orphan inodes */
776 /* for inode management */
777 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
778 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
780 /* for extent tree cache */
781 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
782 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
783 struct list_head extent_list
; /* lru list for shrinker */
784 spinlock_t extent_lock
; /* locking extent lru list */
785 atomic_t total_ext_tree
; /* extent tree count */
786 struct list_head zombie_list
; /* extent zombie tree list */
787 atomic_t total_zombie_tree
; /* extent zombie tree count */
788 atomic_t total_ext_node
; /* extent info count */
790 /* basic filesystem units */
791 unsigned int log_sectors_per_block
; /* log2 sectors per block */
792 unsigned int log_blocksize
; /* log2 block size */
793 unsigned int blocksize
; /* block size */
794 unsigned int root_ino_num
; /* root inode number*/
795 unsigned int node_ino_num
; /* node inode number*/
796 unsigned int meta_ino_num
; /* meta inode number*/
797 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
798 unsigned int blocks_per_seg
; /* blocks per segment */
799 unsigned int segs_per_sec
; /* segments per section */
800 unsigned int secs_per_zone
; /* sections per zone */
801 unsigned int total_sections
; /* total section count */
802 unsigned int total_node_count
; /* total node block count */
803 unsigned int total_valid_node_count
; /* valid node block count */
804 unsigned int total_valid_inode_count
; /* valid inode count */
805 loff_t max_file_blocks
; /* max block index of file */
806 int active_logs
; /* # of active logs */
807 int dir_level
; /* directory level */
809 block_t user_block_count
; /* # of user blocks */
810 block_t total_valid_block_count
; /* # of valid blocks */
811 block_t alloc_valid_block_count
; /* # of allocated blocks */
812 block_t discard_blks
; /* discard command candidats */
813 block_t last_valid_block_count
; /* for recovery */
814 u32 s_next_generation
; /* for NFS support */
815 atomic_t nr_wb_bios
; /* # of writeback bios */
817 /* # of pages, see count_type */
818 struct percpu_counter nr_pages
[NR_COUNT_TYPE
];
820 struct f2fs_mount_info mount_opt
; /* mount options */
822 /* for cleaning operations */
823 struct mutex gc_mutex
; /* mutex for GC */
824 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
825 unsigned int cur_victim_sec
; /* current victim section num */
827 /* maximum # of trials to find a victim segment for SSR and GC */
828 unsigned int max_victim_search
;
831 * for stat information.
832 * one is for the LFS mode, and the other is for the SSR mode.
834 #ifdef CONFIG_F2FS_STAT_FS
835 struct f2fs_stat_info
*stat_info
; /* FS status information */
836 unsigned int segment_count
[2]; /* # of allocated segments */
837 unsigned int block_count
[2]; /* # of allocated blocks */
838 atomic_t inplace_count
; /* # of inplace update */
839 atomic64_t total_hit_ext
; /* # of lookup extent cache */
840 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
841 atomic64_t read_hit_largest
; /* # of hit largest extent node */
842 atomic64_t read_hit_cached
; /* # of hit cached extent node */
843 atomic_t inline_xattr
; /* # of inline_xattr inodes */
844 atomic_t inline_inode
; /* # of inline_data inodes */
845 atomic_t inline_dir
; /* # of inline_dentry inodes */
846 int bg_gc
; /* background gc calls */
847 unsigned int ndirty_inode
[NR_INODE_TYPE
]; /* # of dirty inodes */
849 unsigned int last_victim
[2]; /* last victim segment # */
850 spinlock_t stat_lock
; /* lock for stat operations */
852 /* For sysfs suppport */
853 struct kobject s_kobj
;
854 struct completion s_kobj_unregister
;
856 /* For shrinker support */
857 struct list_head s_list
;
858 struct mutex umount_mutex
;
859 unsigned int shrinker_run_no
;
861 /* For write statistics */
862 u64 sectors_written_start
;
865 /* Reference to checksum algorithm driver via cryptoapi */
866 struct crypto_shash
*s_chksum_driver
;
869 /* For write statistics. Suppose sector size is 512 bytes,
870 * and the return value is in kbytes. s is of struct f2fs_sb_info.
872 #define BD_PART_WRITTEN(s) \
873 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
874 s->sectors_written_start) >> 1)
876 static inline void f2fs_update_time(struct f2fs_sb_info
*sbi
, int type
)
878 sbi
->last_time
[type
] = jiffies
;
881 static inline bool f2fs_time_over(struct f2fs_sb_info
*sbi
, int type
)
883 struct timespec ts
= {sbi
->interval_time
[type
], 0};
884 unsigned long interval
= timespec_to_jiffies(&ts
);
886 return time_after(jiffies
, sbi
->last_time
[type
] + interval
);
889 static inline bool is_idle(struct f2fs_sb_info
*sbi
)
891 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
892 struct request_queue
*q
= bdev_get_queue(bdev
);
893 struct request_list
*rl
= &q
->root_rl
;
895 if (rl
->count
[BLK_RW_SYNC
] || rl
->count
[BLK_RW_ASYNC
])
898 return f2fs_time_over(sbi
, REQ_TIME
);
904 static inline u32
f2fs_crc32(struct f2fs_sb_info
*sbi
, const void *address
,
907 SHASH_DESC_ON_STACK(shash
, sbi
->s_chksum_driver
);
908 u32
*ctx
= (u32
*)shash_desc_ctx(shash
);
911 shash
->tfm
= sbi
->s_chksum_driver
;
913 *ctx
= F2FS_SUPER_MAGIC
;
915 err
= crypto_shash_update(shash
, address
, length
);
921 static inline bool f2fs_crc_valid(struct f2fs_sb_info
*sbi
, __u32 blk_crc
,
922 void *buf
, size_t buf_size
)
924 return f2fs_crc32(sbi
, buf
, buf_size
) == blk_crc
;
927 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
929 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
932 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
934 return sb
->s_fs_info
;
937 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
939 return F2FS_SB(inode
->i_sb
);
942 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
944 return F2FS_I_SB(mapping
->host
);
947 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
949 return F2FS_M_SB(page
->mapping
);
952 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
954 return (struct f2fs_super_block
*)(sbi
->raw_super
);
957 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
959 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
962 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
964 return (struct f2fs_node
*)page_address(page
);
967 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
969 return &((struct f2fs_node
*)page_address(page
))->i
;
972 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
974 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
977 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
979 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
982 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
984 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
987 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
989 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
992 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
994 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
997 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
999 return sbi
->meta_inode
->i_mapping
;
1002 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
1004 return sbi
->node_inode
->i_mapping
;
1007 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
1009 return sbi
->s_flag
& (0x01 << type
);
1012 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
1014 sbi
->s_flag
|= (0x01 << type
);
1017 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
1019 sbi
->s_flag
&= ~(0x01 << type
);
1022 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
1024 return le64_to_cpu(cp
->checkpoint_ver
);
1027 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1029 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1030 return ckpt_flags
& f
;
1033 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1035 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1037 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1040 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1042 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1044 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1047 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
1049 down_read(&sbi
->cp_rwsem
);
1052 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
1054 up_read(&sbi
->cp_rwsem
);
1057 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
1059 down_write(&sbi
->cp_rwsem
);
1062 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
1064 up_write(&sbi
->cp_rwsem
);
1067 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
1069 int reason
= CP_SYNC
;
1071 if (test_opt(sbi
, FASTBOOT
))
1072 reason
= CP_FASTBOOT
;
1073 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
1078 static inline bool __remain_node_summaries(int reason
)
1080 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
1083 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
1085 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
1086 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1090 * Check whether the given nid is within node id range.
1092 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1094 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1096 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1101 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1104 * Check whether the inode has blocks or not
1106 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1108 if (F2FS_I(inode
)->i_xattr_nid
)
1109 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1111 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1114 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1116 return ofs
== XATTR_NODE_OFFSET
;
1119 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1120 struct inode
*inode
, blkcnt_t
*count
)
1122 block_t valid_block_count
;
1124 spin_lock(&sbi
->stat_lock
);
1125 #ifdef CONFIG_F2FS_FAULT_INJECTION
1126 if (time_to_inject(FAULT_BLOCK
)) {
1127 spin_unlock(&sbi
->stat_lock
);
1132 sbi
->total_valid_block_count
+ (block_t
)(*count
);
1133 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1134 *count
= sbi
->user_block_count
- sbi
->total_valid_block_count
;
1136 spin_unlock(&sbi
->stat_lock
);
1140 /* *count can be recalculated */
1141 inode
->i_blocks
+= *count
;
1142 sbi
->total_valid_block_count
=
1143 sbi
->total_valid_block_count
+ (block_t
)(*count
);
1144 sbi
->alloc_valid_block_count
+= (block_t
)(*count
);
1145 spin_unlock(&sbi
->stat_lock
);
1149 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1150 struct inode
*inode
,
1153 spin_lock(&sbi
->stat_lock
);
1154 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1155 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1156 inode
->i_blocks
-= count
;
1157 sbi
->total_valid_block_count
-= (block_t
)count
;
1158 spin_unlock(&sbi
->stat_lock
);
1161 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1163 percpu_counter_inc(&sbi
->nr_pages
[count_type
]);
1164 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1167 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1169 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
1170 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1171 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1174 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1176 percpu_counter_dec(&sbi
->nr_pages
[count_type
]);
1179 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1181 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1182 !S_ISLNK(inode
->i_mode
))
1185 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
1186 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1187 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1190 static inline s64
get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1192 return percpu_counter_sum_positive(&sbi
->nr_pages
[count_type
]);
1195 static inline int get_dirty_pages(struct inode
*inode
)
1197 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
1200 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1202 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1203 unsigned int segs
= (get_pages(sbi
, block_type
) + pages_per_sec
- 1) >>
1204 sbi
->log_blocks_per_seg
;
1206 return segs
/ sbi
->segs_per_sec
;
1209 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1211 return sbi
->total_valid_block_count
;
1214 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1216 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1218 /* return NAT or SIT bitmap */
1219 if (flag
== NAT_BITMAP
)
1220 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1221 else if (flag
== SIT_BITMAP
)
1222 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1227 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1229 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1232 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1234 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1237 if (__cp_payload(sbi
) > 0) {
1238 if (flag
== NAT_BITMAP
)
1239 return &ckpt
->sit_nat_version_bitmap
;
1241 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1243 offset
= (flag
== NAT_BITMAP
) ?
1244 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1245 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1249 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1252 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1253 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1255 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1258 * odd numbered checkpoint should at cp segment 0
1259 * and even segment must be at cp segment 1
1261 if (!(ckpt_version
& 1))
1262 start_addr
+= sbi
->blocks_per_seg
;
1267 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1269 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1272 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1273 struct inode
*inode
)
1275 block_t valid_block_count
;
1276 unsigned int valid_node_count
;
1278 spin_lock(&sbi
->stat_lock
);
1280 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1281 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1282 spin_unlock(&sbi
->stat_lock
);
1286 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1287 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1288 spin_unlock(&sbi
->stat_lock
);
1295 sbi
->alloc_valid_block_count
++;
1296 sbi
->total_valid_node_count
++;
1297 sbi
->total_valid_block_count
++;
1298 spin_unlock(&sbi
->stat_lock
);
1303 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1304 struct inode
*inode
)
1306 spin_lock(&sbi
->stat_lock
);
1308 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1309 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1310 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1313 sbi
->total_valid_node_count
--;
1314 sbi
->total_valid_block_count
--;
1316 spin_unlock(&sbi
->stat_lock
);
1319 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1321 return sbi
->total_valid_node_count
;
1324 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1326 spin_lock(&sbi
->stat_lock
);
1327 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1328 sbi
->total_valid_inode_count
++;
1329 spin_unlock(&sbi
->stat_lock
);
1332 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1334 spin_lock(&sbi
->stat_lock
);
1335 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1336 sbi
->total_valid_inode_count
--;
1337 spin_unlock(&sbi
->stat_lock
);
1340 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1342 return sbi
->total_valid_inode_count
;
1345 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1346 pgoff_t index
, bool for_write
)
1348 #ifdef CONFIG_F2FS_FAULT_INJECTION
1349 struct page
*page
= find_lock_page(mapping
, index
);
1353 if (time_to_inject(FAULT_PAGE_ALLOC
))
1357 return grab_cache_page(mapping
, index
);
1358 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1361 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1363 char *src_kaddr
= kmap(src
);
1364 char *dst_kaddr
= kmap(dst
);
1366 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1371 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1377 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1383 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1386 f2fs_put_page(dn
->node_page
, 1);
1387 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1388 f2fs_put_page(dn
->inode_page
, 0);
1389 dn
->node_page
= NULL
;
1390 dn
->inode_page
= NULL
;
1393 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1396 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1399 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1404 entry
= kmem_cache_alloc(cachep
, flags
);
1406 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1410 static inline struct bio
*f2fs_bio_alloc(int npages
)
1414 /* No failure on bio allocation */
1415 bio
= bio_alloc(GFP_NOIO
, npages
);
1417 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1421 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1422 unsigned long index
, void *item
)
1424 while (radix_tree_insert(root
, index
, item
))
1428 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1430 static inline bool IS_INODE(struct page
*page
)
1432 struct f2fs_node
*p
= F2FS_NODE(page
);
1433 return RAW_IS_INODE(p
);
1436 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1438 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1441 static inline block_t
datablock_addr(struct page
*node_page
,
1442 unsigned int offset
)
1444 struct f2fs_node
*raw_node
;
1446 raw_node
= F2FS_NODE(node_page
);
1447 addr_array
= blkaddr_in_node(raw_node
);
1448 return le32_to_cpu(addr_array
[offset
]);
1451 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1456 mask
= 1 << (7 - (nr
& 0x07));
1457 return mask
& *addr
;
1460 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1465 mask
= 1 << (7 - (nr
& 0x07));
1469 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1474 mask
= 1 << (7 - (nr
& 0x07));
1478 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1484 mask
= 1 << (7 - (nr
& 0x07));
1490 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1496 mask
= 1 << (7 - (nr
& 0x07));
1502 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1507 mask
= 1 << (7 - (nr
& 0x07));
1511 /* used for f2fs_inode_info->flags */
1513 FI_NEW_INODE
, /* indicate newly allocated inode */
1514 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1515 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1516 FI_INC_LINK
, /* need to increment i_nlink */
1517 FI_ACL_MODE
, /* indicate acl mode */
1518 FI_NO_ALLOC
, /* should not allocate any blocks */
1519 FI_FREE_NID
, /* free allocated nide */
1520 FI_UPDATE_DIR
, /* should update inode block for consistency */
1521 FI_NO_EXTENT
, /* not to use the extent cache */
1522 FI_INLINE_XATTR
, /* used for inline xattr */
1523 FI_INLINE_DATA
, /* used for inline data*/
1524 FI_INLINE_DENTRY
, /* used for inline dentry */
1525 FI_APPEND_WRITE
, /* inode has appended data */
1526 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1527 FI_NEED_IPU
, /* used for ipu per file */
1528 FI_ATOMIC_FILE
, /* indicate atomic file */
1529 FI_VOLATILE_FILE
, /* indicate volatile file */
1530 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1531 FI_DROP_CACHE
, /* drop dirty page cache */
1532 FI_DATA_EXIST
, /* indicate data exists */
1533 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1534 FI_DO_DEFRAG
, /* indicate defragment is running */
1535 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1538 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1540 if (!test_bit(flag
, &fi
->flags
))
1541 set_bit(flag
, &fi
->flags
);
1544 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1546 return test_bit(flag
, &fi
->flags
);
1549 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1551 if (test_bit(flag
, &fi
->flags
))
1552 clear_bit(flag
, &fi
->flags
);
1555 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1557 fi
->i_acl_mode
= mode
;
1558 set_inode_flag(fi
, FI_ACL_MODE
);
1561 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1562 struct f2fs_inode
*ri
)
1564 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1565 set_inode_flag(fi
, FI_INLINE_XATTR
);
1566 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1567 set_inode_flag(fi
, FI_INLINE_DATA
);
1568 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1569 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1570 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1571 set_inode_flag(fi
, FI_DATA_EXIST
);
1572 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1573 set_inode_flag(fi
, FI_INLINE_DOTS
);
1576 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1577 struct f2fs_inode
*ri
)
1581 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1582 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1583 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1584 ri
->i_inline
|= F2FS_INLINE_DATA
;
1585 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1586 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1587 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1588 ri
->i_inline
|= F2FS_DATA_EXIST
;
1589 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1590 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1593 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1595 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1598 static inline unsigned int addrs_per_inode(struct inode
*inode
)
1600 if (f2fs_has_inline_xattr(inode
))
1601 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1602 return DEF_ADDRS_PER_INODE
;
1605 static inline void *inline_xattr_addr(struct page
*page
)
1607 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1608 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1609 F2FS_INLINE_XATTR_ADDRS
]);
1612 static inline int inline_xattr_size(struct inode
*inode
)
1614 if (f2fs_has_inline_xattr(inode
))
1615 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1620 static inline int f2fs_has_inline_data(struct inode
*inode
)
1622 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1625 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1627 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1628 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1631 static inline int f2fs_exist_data(struct inode
*inode
)
1633 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1636 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1638 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1641 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1643 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1646 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1648 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1651 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1653 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1656 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1658 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1661 static inline void *inline_data_addr(struct page
*page
)
1663 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1664 return (void *)&(ri
->i_addr
[1]);
1667 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1669 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1672 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1674 if (!f2fs_has_inline_dentry(dir
))
1678 static inline int is_file(struct inode
*inode
, int type
)
1680 return F2FS_I(inode
)->i_advise
& type
;
1683 static inline void set_file(struct inode
*inode
, int type
)
1685 F2FS_I(inode
)->i_advise
|= type
;
1688 static inline void clear_file(struct inode
*inode
, int type
)
1690 F2FS_I(inode
)->i_advise
&= ~type
;
1693 static inline int f2fs_readonly(struct super_block
*sb
)
1695 return sb
->s_flags
& MS_RDONLY
;
1698 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1700 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1703 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1705 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1706 sbi
->sb
->s_flags
|= MS_RDONLY
;
1709 static inline bool is_dot_dotdot(const struct qstr
*str
)
1711 if (str
->len
== 1 && str
->name
[0] == '.')
1714 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1720 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1722 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1723 is_inode_flag_set(F2FS_I(inode
), FI_NO_EXTENT
))
1726 return S_ISREG(inode
->i_mode
);
1729 static inline void *f2fs_kmalloc(size_t size
, gfp_t flags
)
1731 #ifdef CONFIG_F2FS_FAULT_INJECTION
1732 if (time_to_inject(FAULT_KMALLOC
))
1735 return kmalloc(size
, flags
);
1738 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1742 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1744 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1748 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1752 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1754 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1758 #define get_inode_mode(i) \
1759 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1760 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1762 /* get offset of first page in next direct node */
1763 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1764 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1765 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1766 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1771 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1772 void truncate_data_blocks(struct dnode_of_data
*);
1773 int truncate_blocks(struct inode
*, u64
, bool);
1774 int f2fs_truncate(struct inode
*, bool);
1775 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1776 int f2fs_setattr(struct dentry
*, struct iattr
*);
1777 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1778 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1779 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1780 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1785 void f2fs_set_inode_flags(struct inode
*);
1786 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1787 int try_to_free_nats(struct f2fs_sb_info
*, int);
1788 int update_inode(struct inode
*, struct page
*);
1789 int update_inode_page(struct inode
*);
1790 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1791 void f2fs_evict_inode(struct inode
*);
1792 void handle_failed_inode(struct inode
*);
1797 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1802 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1803 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1804 unsigned char get_de_type(struct f2fs_dir_entry
*);
1805 struct f2fs_dir_entry
*find_target_dentry(struct fscrypt_name
*,
1806 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1807 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1808 unsigned int, struct fscrypt_str
*);
1809 void do_make_empty_dir(struct inode
*, struct inode
*,
1810 struct f2fs_dentry_ptr
*);
1811 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1812 const struct qstr
*, struct page
*);
1813 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1814 int room_for_filename(const void *, int, int);
1815 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1816 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1818 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1819 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1820 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1821 struct page
*, struct inode
*);
1822 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1823 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1824 const struct qstr
*, f2fs_hash_t
, unsigned int);
1825 int f2fs_add_regular_entry(struct inode
*, const struct qstr
*,
1826 struct inode
*, nid_t
, umode_t
);
1827 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1829 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1831 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1832 bool f2fs_empty_dir(struct inode
*);
1834 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1836 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1837 inode
, inode
->i_ino
, inode
->i_mode
);
1843 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1844 int f2fs_sync_fs(struct super_block
*, int);
1845 extern __printf(3, 4)
1846 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1847 int sanity_check_ckpt(struct f2fs_sb_info
*sbi
);
1852 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1857 struct dnode_of_data
;
1860 bool available_free_memory(struct f2fs_sb_info
*, int);
1861 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1862 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1863 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1864 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1865 pgoff_t
get_next_page_offset(struct dnode_of_data
*, pgoff_t
);
1866 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1867 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1868 int truncate_xattr_node(struct inode
*, struct page
*);
1869 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1870 int remove_inode_page(struct inode
*);
1871 struct page
*new_inode_page(struct inode
*);
1872 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1873 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1874 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1875 struct page
*get_node_page_ra(struct page
*, int);
1876 void sync_inode_page(struct dnode_of_data
*);
1877 void move_node_page(struct page
*, int);
1878 int fsync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*,
1880 int sync_node_pages(struct f2fs_sb_info
*, struct writeback_control
*);
1881 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1882 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1883 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1884 int try_to_free_nids(struct f2fs_sb_info
*, int);
1885 void recover_inline_xattr(struct inode
*, struct page
*);
1886 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1887 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1888 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1889 struct f2fs_summary_block
*);
1890 void flush_nat_entries(struct f2fs_sb_info
*);
1891 int build_node_manager(struct f2fs_sb_info
*);
1892 void destroy_node_manager(struct f2fs_sb_info
*);
1893 int __init
create_node_manager_caches(void);
1894 void destroy_node_manager_caches(void);
1899 void register_inmem_page(struct inode
*, struct page
*);
1900 void drop_inmem_pages(struct inode
*);
1901 int commit_inmem_pages(struct inode
*);
1902 void f2fs_balance_fs(struct f2fs_sb_info
*, bool);
1903 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1904 int f2fs_issue_flush(struct f2fs_sb_info
*);
1905 int create_flush_cmd_control(struct f2fs_sb_info
*);
1906 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1907 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1908 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
1909 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1910 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1911 void release_discard_addrs(struct f2fs_sb_info
*);
1912 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1913 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1914 void allocate_new_segments(struct f2fs_sb_info
*);
1915 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1916 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1917 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1918 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1919 void write_node_page(unsigned int, struct f2fs_io_info
*);
1920 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1921 void rewrite_data_page(struct f2fs_io_info
*);
1922 void __f2fs_replace_block(struct f2fs_sb_info
*, struct f2fs_summary
*,
1923 block_t
, block_t
, bool, bool);
1924 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
1925 block_t
, block_t
, unsigned char, bool, bool);
1926 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1927 block_t
, block_t
*, struct f2fs_summary
*, int);
1928 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
, bool);
1929 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
1930 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1931 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1932 int lookup_journal_in_cursum(struct f2fs_journal
*, int, unsigned int, int);
1933 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1934 int build_segment_manager(struct f2fs_sb_info
*);
1935 void destroy_segment_manager(struct f2fs_sb_info
*);
1936 int __init
create_segment_manager_caches(void);
1937 void destroy_segment_manager_caches(void);
1942 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1943 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1944 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
1945 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
1946 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
1947 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1948 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1949 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1950 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1951 void release_ino_entry(struct f2fs_sb_info
*, bool);
1952 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1953 int acquire_orphan_inode(struct f2fs_sb_info
*);
1954 void release_orphan_inode(struct f2fs_sb_info
*);
1955 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1956 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1957 int recover_orphan_inodes(struct f2fs_sb_info
*);
1958 int get_valid_checkpoint(struct f2fs_sb_info
*);
1959 void update_dirty_page(struct inode
*, struct page
*);
1960 void remove_dirty_inode(struct inode
*);
1961 int sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
1962 int write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1963 void init_ino_entry_info(struct f2fs_sb_info
*);
1964 int __init
create_checkpoint_caches(void);
1965 void destroy_checkpoint_caches(void);
1970 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1971 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info
*, struct inode
*,
1972 struct page
*, nid_t
, enum page_type
, int);
1973 void f2fs_flush_merged_bios(struct f2fs_sb_info
*);
1974 int f2fs_submit_page_bio(struct f2fs_io_info
*);
1975 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
1976 void set_data_blkaddr(struct dnode_of_data
*);
1977 void f2fs_update_data_blkaddr(struct dnode_of_data
*, block_t
);
1978 int reserve_new_blocks(struct dnode_of_data
*, blkcnt_t
);
1979 int reserve_new_block(struct dnode_of_data
*);
1980 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
1981 ssize_t
f2fs_preallocate_blocks(struct kiocb
*, struct iov_iter
*);
1982 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1983 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
1984 struct page
*find_data_page(struct inode
*, pgoff_t
);
1985 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
1986 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1987 int do_write_data_page(struct f2fs_io_info
*);
1988 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
1989 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1990 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1991 int f2fs_release_page(struct page
*, gfp_t
);
1996 int start_gc_thread(struct f2fs_sb_info
*);
1997 void stop_gc_thread(struct f2fs_sb_info
*);
1998 block_t
start_bidx_of_node(unsigned int, struct inode
*);
1999 int f2fs_gc(struct f2fs_sb_info
*, bool);
2000 void build_gc_manager(struct f2fs_sb_info
*);
2005 int recover_fsync_data(struct f2fs_sb_info
*, bool);
2006 bool space_for_roll_forward(struct f2fs_sb_info
*);
2011 #ifdef CONFIG_F2FS_STAT_FS
2012 struct f2fs_stat_info
{
2013 struct list_head stat_list
;
2014 struct f2fs_sb_info
*sbi
;
2015 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
2016 int main_area_segs
, main_area_sections
, main_area_zones
;
2017 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
2018 unsigned long long hit_total
, total_ext
;
2019 int ext_tree
, zombie_tree
, ext_node
;
2020 s64 ndirty_node
, ndirty_dent
, ndirty_meta
, ndirty_data
, inmem_pages
;
2021 unsigned int ndirty_dirs
, ndirty_files
;
2022 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
2023 int total_count
, utilization
;
2025 int inline_xattr
, inline_inode
, inline_dir
, orphans
;
2026 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
2027 unsigned int bimodal
, avg_vblocks
;
2028 int util_free
, util_valid
, util_invalid
;
2029 int rsvd_segs
, overp_segs
;
2030 int dirty_count
, node_pages
, meta_pages
;
2031 int prefree_count
, call_count
, cp_count
, bg_cp_count
;
2032 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
2033 int bg_node_segs
, bg_data_segs
;
2034 int tot_blks
, data_blks
, node_blks
;
2035 int bg_data_blks
, bg_node_blks
;
2036 int curseg
[NR_CURSEG_TYPE
];
2037 int cursec
[NR_CURSEG_TYPE
];
2038 int curzone
[NR_CURSEG_TYPE
];
2040 unsigned int segment_count
[2];
2041 unsigned int block_count
[2];
2042 unsigned int inplace_count
;
2043 unsigned long long base_mem
, cache_mem
, page_mem
;
2046 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
2048 return (struct f2fs_stat_info
*)sbi
->stat_info
;
2051 #define stat_inc_cp_count(si) ((si)->cp_count++)
2052 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2053 #define stat_inc_call_count(si) ((si)->call_count++)
2054 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2055 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2056 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2057 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2058 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2059 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2060 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2061 #define stat_inc_inline_xattr(inode) \
2063 if (f2fs_has_inline_xattr(inode)) \
2064 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2066 #define stat_dec_inline_xattr(inode) \
2068 if (f2fs_has_inline_xattr(inode)) \
2069 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2071 #define stat_inc_inline_inode(inode) \
2073 if (f2fs_has_inline_data(inode)) \
2074 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2076 #define stat_dec_inline_inode(inode) \
2078 if (f2fs_has_inline_data(inode)) \
2079 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2081 #define stat_inc_inline_dir(inode) \
2083 if (f2fs_has_inline_dentry(inode)) \
2084 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2086 #define stat_dec_inline_dir(inode) \
2088 if (f2fs_has_inline_dentry(inode)) \
2089 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2091 #define stat_inc_seg_type(sbi, curseg) \
2092 ((sbi)->segment_count[(curseg)->alloc_type]++)
2093 #define stat_inc_block_count(sbi, curseg) \
2094 ((sbi)->block_count[(curseg)->alloc_type]++)
2095 #define stat_inc_inplace_blocks(sbi) \
2096 (atomic_inc(&(sbi)->inplace_count))
2097 #define stat_inc_seg_count(sbi, type, gc_type) \
2099 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2101 if (type == SUM_TYPE_DATA) { \
2103 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2106 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2110 #define stat_inc_tot_blk_count(si, blks) \
2111 (si->tot_blks += (blks))
2113 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2115 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2116 stat_inc_tot_blk_count(si, blks); \
2117 si->data_blks += (blks); \
2118 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2121 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2123 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2124 stat_inc_tot_blk_count(si, blks); \
2125 si->node_blks += (blks); \
2126 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2129 int f2fs_build_stats(struct f2fs_sb_info
*);
2130 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2131 int __init
f2fs_create_root_stats(void);
2132 void f2fs_destroy_root_stats(void);
2134 #define stat_inc_cp_count(si)
2135 #define stat_inc_bg_cp_count(si)
2136 #define stat_inc_call_count(si)
2137 #define stat_inc_bggc_count(si)
2138 #define stat_inc_dirty_inode(sbi, type)
2139 #define stat_dec_dirty_inode(sbi, type)
2140 #define stat_inc_total_hit(sb)
2141 #define stat_inc_rbtree_node_hit(sb)
2142 #define stat_inc_largest_node_hit(sbi)
2143 #define stat_inc_cached_node_hit(sbi)
2144 #define stat_inc_inline_xattr(inode)
2145 #define stat_dec_inline_xattr(inode)
2146 #define stat_inc_inline_inode(inode)
2147 #define stat_dec_inline_inode(inode)
2148 #define stat_inc_inline_dir(inode)
2149 #define stat_dec_inline_dir(inode)
2150 #define stat_inc_seg_type(sbi, curseg)
2151 #define stat_inc_block_count(sbi, curseg)
2152 #define stat_inc_inplace_blocks(sbi)
2153 #define stat_inc_seg_count(sbi, type, gc_type)
2154 #define stat_inc_tot_blk_count(si, blks)
2155 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2156 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2158 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2159 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2160 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2161 static inline void f2fs_destroy_root_stats(void) { }
2164 extern const struct file_operations f2fs_dir_operations
;
2165 extern const struct file_operations f2fs_file_operations
;
2166 extern const struct inode_operations f2fs_file_inode_operations
;
2167 extern const struct address_space_operations f2fs_dblock_aops
;
2168 extern const struct address_space_operations f2fs_node_aops
;
2169 extern const struct address_space_operations f2fs_meta_aops
;
2170 extern const struct inode_operations f2fs_dir_inode_operations
;
2171 extern const struct inode_operations f2fs_symlink_inode_operations
;
2172 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2173 extern const struct inode_operations f2fs_special_inode_operations
;
2174 extern struct kmem_cache
*inode_entry_slab
;
2179 bool f2fs_may_inline_data(struct inode
*);
2180 bool f2fs_may_inline_dentry(struct inode
*);
2181 void read_inline_data(struct page
*, struct page
*);
2182 bool truncate_inline_inode(struct page
*, u64
);
2183 int f2fs_read_inline_data(struct inode
*, struct page
*);
2184 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2185 int f2fs_convert_inline_inode(struct inode
*);
2186 int f2fs_write_inline_data(struct inode
*, struct page
*);
2187 bool recover_inline_data(struct inode
*, struct page
*);
2188 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2189 struct fscrypt_name
*, struct page
**);
2190 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
2191 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2192 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2194 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2195 struct inode
*, struct inode
*);
2196 bool f2fs_empty_inline_dir(struct inode
*);
2197 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2198 struct fscrypt_str
*);
2199 int f2fs_inline_data_fiemap(struct inode
*,
2200 struct fiemap_extent_info
*, __u64
, __u64
);
2205 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2206 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2207 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2208 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2213 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2214 bool f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2215 unsigned int f2fs_destroy_extent_node(struct inode
*);
2216 void f2fs_destroy_extent_tree(struct inode
*);
2217 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2218 void f2fs_update_extent_cache(struct dnode_of_data
*);
2219 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2220 pgoff_t
, block_t
, unsigned int);
2221 void init_extent_cache_info(struct f2fs_sb_info
*);
2222 int __init
create_extent_cache(void);
2223 void destroy_extent_cache(void);
2228 static inline bool f2fs_encrypted_inode(struct inode
*inode
)
2230 return file_is_encrypt(inode
);
2233 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2235 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2236 file_set_encrypt(inode
);
2240 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2242 return bio
->bi_private
!= NULL
;
2245 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2247 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2250 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2252 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2253 umode_t mode
= inode
->i_mode
;
2255 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2261 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2262 #define fscrypt_set_d_op(i)
2263 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2264 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2265 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2266 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2267 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2268 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2269 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2270 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2271 #define fscrypt_process_policy fscrypt_notsupp_process_policy
2272 #define fscrypt_get_policy fscrypt_notsupp_get_policy
2273 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2274 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2275 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2276 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2277 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2278 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2279 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2280 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2281 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2282 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2283 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk