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 extern u32 f2fs_fault_rate
;
52 extern atomic_t f2fs_ops
;
53 extern char *fault_name
[FAULT_MAX
];
55 static inline bool time_to_inject(int type
)
57 atomic_inc(&f2fs_ops
);
58 if (f2fs_fault_rate
&& (atomic_read(&f2fs_ops
) >= f2fs_fault_rate
)) {
59 atomic_set(&f2fs_ops
, 0);
60 printk("%sF2FS-fs : inject %s in %pF\n",
63 __builtin_return_address(0));
73 #define F2FS_MOUNT_BG_GC 0x00000001
74 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
75 #define F2FS_MOUNT_DISCARD 0x00000004
76 #define F2FS_MOUNT_NOHEAP 0x00000008
77 #define F2FS_MOUNT_XATTR_USER 0x00000010
78 #define F2FS_MOUNT_POSIX_ACL 0x00000020
79 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
80 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
81 #define F2FS_MOUNT_INLINE_DATA 0x00000100
82 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
83 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
84 #define F2FS_MOUNT_NOBARRIER 0x00000800
85 #define F2FS_MOUNT_FASTBOOT 0x00001000
86 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
87 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
88 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
89 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
91 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
92 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
93 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
95 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
96 typecheck(unsigned long long, b) && \
97 ((long long)((a) - (b)) > 0))
99 typedef u32 block_t
; /*
100 * should not change u32, since it is the on-disk block
101 * address format, __le32.
105 struct f2fs_mount_info
{
109 #define F2FS_FEATURE_ENCRYPT 0x0001
111 #define F2FS_HAS_FEATURE(sb, mask) \
112 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
113 #define F2FS_SET_FEATURE(sb, mask) \
114 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
115 #define F2FS_CLEAR_FEATURE(sb, mask) \
116 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
119 * For checkpoint manager
134 #define DEF_BATCHED_TRIM_SECTIONS 32
135 #define BATCHED_TRIM_SEGMENTS(sbi) \
136 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
137 #define BATCHED_TRIM_BLOCKS(sbi) \
138 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
139 #define DEF_CP_INTERVAL 60 /* 60 secs */
140 #define DEF_IDLE_INTERVAL 120 /* 2 mins */
151 * For CP/NAT/SIT/SSA readahead
161 /* for the list of ino */
163 ORPHAN_INO
, /* for orphan ino list */
164 APPEND_INO
, /* for append ino list */
165 UPDATE_INO
, /* for update ino list */
166 MAX_INO_ENTRY
, /* max. list */
170 struct list_head list
; /* list head */
171 nid_t ino
; /* inode number */
174 /* for the list of inodes to be GCed */
176 struct list_head list
; /* list head */
177 struct inode
*inode
; /* vfs inode pointer */
180 /* for the list of blockaddresses to be discarded */
181 struct discard_entry
{
182 struct list_head list
; /* list head */
183 block_t blkaddr
; /* block address to be discarded */
184 int len
; /* # of consecutive blocks of the discard */
187 /* for the list of fsync inodes, used only during recovery */
188 struct fsync_inode_entry
{
189 struct list_head list
; /* list head */
190 struct inode
*inode
; /* vfs inode pointer */
191 block_t blkaddr
; /* block address locating the last fsync */
192 block_t last_dentry
; /* block address locating the last dentry */
195 #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
196 #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
198 #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
199 #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
200 #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
201 #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
203 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
204 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
206 static inline int update_nats_in_cursum(struct f2fs_journal
*journal
, int i
)
208 int before
= nats_in_cursum(journal
);
209 journal
->n_nats
= cpu_to_le16(before
+ i
);
213 static inline int update_sits_in_cursum(struct f2fs_journal
*journal
, int i
)
215 int before
= sits_in_cursum(journal
);
216 journal
->n_sits
= cpu_to_le16(before
+ i
);
220 static inline bool __has_cursum_space(struct f2fs_journal
*journal
,
223 if (type
== NAT_JOURNAL
)
224 return size
<= MAX_NAT_JENTRIES(journal
);
225 return size
<= MAX_SIT_JENTRIES(journal
);
231 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
232 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
233 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
235 #define F2FS_IOCTL_MAGIC 0xf5
236 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
237 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
238 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
239 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
240 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
241 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
242 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
243 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
245 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
246 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
247 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
250 * should be same as XFS_IOC_GOINGDOWN.
251 * Flags for going down operation used by FS_IOC_GOINGDOWN
253 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
254 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
255 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
256 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
257 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
259 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
261 * ioctl commands in 32 bit emulation
263 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
264 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
265 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
268 struct f2fs_defragment
{
274 * For INODE and NODE manager
276 /* for directory operations */
277 struct f2fs_dentry_ptr
{
280 struct f2fs_dir_entry
*dentry
;
281 __u8 (*filename
)[F2FS_SLOT_LEN
];
285 static inline void make_dentry_ptr(struct inode
*inode
,
286 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
291 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
292 d
->max
= NR_DENTRY_IN_BLOCK
;
293 d
->bitmap
= &t
->dentry_bitmap
;
294 d
->dentry
= t
->dentry
;
295 d
->filename
= t
->filename
;
297 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
298 d
->max
= NR_INLINE_DENTRY
;
299 d
->bitmap
= &t
->dentry_bitmap
;
300 d
->dentry
= t
->dentry
;
301 d
->filename
= t
->filename
;
306 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
307 * as its node offset to distinguish from index node blocks.
308 * But some bits are used to mark the node block.
310 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
313 ALLOC_NODE
, /* allocate a new node page if needed */
314 LOOKUP_NODE
, /* look up a node without readahead */
316 * look up a node with readahead called
321 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
323 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
325 /* vector size for gang look-up from extent cache that consists of radix tree */
326 #define EXT_TREE_VEC_SIZE 64
328 /* for in-memory extent cache entry */
329 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
331 /* number of extent info in extent cache we try to shrink */
332 #define EXTENT_CACHE_SHRINK_NUMBER 128
335 unsigned int fofs
; /* start offset in a file */
336 u32 blk
; /* start block address of the extent */
337 unsigned int len
; /* length of the extent */
341 struct rb_node rb_node
; /* rb node located in rb-tree */
342 struct list_head list
; /* node in global extent list of sbi */
343 struct extent_info ei
; /* extent info */
344 struct extent_tree
*et
; /* extent tree pointer */
348 nid_t ino
; /* inode number */
349 struct rb_root root
; /* root of extent info rb-tree */
350 struct extent_node
*cached_en
; /* recently accessed extent node */
351 struct extent_info largest
; /* largested extent info */
352 struct list_head list
; /* to be used by sbi->zombie_list */
353 rwlock_t lock
; /* protect extent info rb-tree */
354 atomic_t node_cnt
; /* # of extent node in rb-tree*/
358 * This structure is taken from ext4_map_blocks.
360 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
362 #define F2FS_MAP_NEW (1 << BH_New)
363 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
364 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
365 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
368 struct f2fs_map_blocks
{
372 unsigned int m_flags
;
373 pgoff_t
*m_next_pgofs
; /* point next possible non-hole pgofs */
376 /* for flag in get_data_block */
377 #define F2FS_GET_BLOCK_READ 0
378 #define F2FS_GET_BLOCK_DIO 1
379 #define F2FS_GET_BLOCK_FIEMAP 2
380 #define F2FS_GET_BLOCK_BMAP 3
381 #define F2FS_GET_BLOCK_PRE_DIO 4
382 #define F2FS_GET_BLOCK_PRE_AIO 5
385 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
387 #define FADVISE_COLD_BIT 0x01
388 #define FADVISE_LOST_PINO_BIT 0x02
389 #define FADVISE_ENCRYPT_BIT 0x04
390 #define FADVISE_ENC_NAME_BIT 0x08
392 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
393 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
394 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
395 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
396 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
397 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
398 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
399 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
400 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
401 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
402 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
404 #define DEF_DIR_LEVEL 0
406 struct f2fs_inode_info
{
407 struct inode vfs_inode
; /* serve a vfs inode */
408 unsigned long i_flags
; /* keep an inode flags for ioctl */
409 unsigned char i_advise
; /* use to give file attribute hints */
410 unsigned char i_dir_level
; /* use for dentry level for large dir */
411 unsigned int i_current_depth
; /* use only in directory structure */
412 unsigned int i_pino
; /* parent inode number */
413 umode_t i_acl_mode
; /* keep file acl mode temporarily */
415 /* Use below internally in f2fs*/
416 unsigned long flags
; /* use to pass per-file flags */
417 struct rw_semaphore i_sem
; /* protect fi info */
418 atomic_t dirty_pages
; /* # of dirty pages */
419 f2fs_hash_t chash
; /* hash value of given file name */
420 unsigned int clevel
; /* maximum level of given file name */
421 nid_t i_xattr_nid
; /* node id that contains xattrs */
422 unsigned long long xattr_ver
; /* cp version of xattr modification */
424 struct list_head dirty_list
; /* linked in global dirty list */
425 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
426 struct mutex inmem_lock
; /* lock for inmemory pages */
427 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
430 static inline void get_extent_info(struct extent_info
*ext
,
431 struct f2fs_extent
*i_ext
)
433 ext
->fofs
= le32_to_cpu(i_ext
->fofs
);
434 ext
->blk
= le32_to_cpu(i_ext
->blk
);
435 ext
->len
= le32_to_cpu(i_ext
->len
);
438 static inline void set_raw_extent(struct extent_info
*ext
,
439 struct f2fs_extent
*i_ext
)
441 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
442 i_ext
->blk
= cpu_to_le32(ext
->blk
);
443 i_ext
->len
= cpu_to_le32(ext
->len
);
446 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
447 u32 blk
, unsigned int len
)
454 static inline bool __is_extent_same(struct extent_info
*ei1
,
455 struct extent_info
*ei2
)
457 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
458 ei1
->len
== ei2
->len
);
461 static inline bool __is_extent_mergeable(struct extent_info
*back
,
462 struct extent_info
*front
)
464 return (back
->fofs
+ back
->len
== front
->fofs
&&
465 back
->blk
+ back
->len
== front
->blk
);
468 static inline bool __is_back_mergeable(struct extent_info
*cur
,
469 struct extent_info
*back
)
471 return __is_extent_mergeable(back
, cur
);
474 static inline bool __is_front_mergeable(struct extent_info
*cur
,
475 struct extent_info
*front
)
477 return __is_extent_mergeable(cur
, front
);
480 static inline void __try_update_largest_extent(struct extent_tree
*et
,
481 struct extent_node
*en
)
483 if (en
->ei
.len
> et
->largest
.len
)
484 et
->largest
= en
->ei
;
487 struct f2fs_nm_info
{
488 block_t nat_blkaddr
; /* base disk address of NAT */
489 nid_t max_nid
; /* maximum possible node ids */
490 nid_t available_nids
; /* maximum available node ids */
491 nid_t next_scan_nid
; /* the next nid to be scanned */
492 unsigned int ram_thresh
; /* control the memory footprint */
493 unsigned int ra_nid_pages
; /* # of nid pages to be readaheaded */
494 unsigned int dirty_nats_ratio
; /* control dirty nats ratio threshold */
496 /* NAT cache management */
497 struct radix_tree_root nat_root
;/* root of the nat entry cache */
498 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
499 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
500 struct list_head nat_entries
; /* cached nat entry list (clean) */
501 unsigned int nat_cnt
; /* the # of cached nat entries */
502 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
504 /* free node ids management */
505 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
506 struct list_head free_nid_list
; /* a list for free nids */
507 spinlock_t free_nid_list_lock
; /* protect free nid list */
508 unsigned int fcnt
; /* the number of free node id */
509 struct mutex build_lock
; /* lock for build free nids */
512 char *nat_bitmap
; /* NAT bitmap pointer */
513 int bitmap_size
; /* bitmap size */
517 * this structure is used as one of function parameters.
518 * all the information are dedicated to a given direct node block determined
519 * by the data offset in a file.
521 struct dnode_of_data
{
522 struct inode
*inode
; /* vfs inode pointer */
523 struct page
*inode_page
; /* its inode page, NULL is possible */
524 struct page
*node_page
; /* cached direct node page */
525 nid_t nid
; /* node id of the direct node block */
526 unsigned int ofs_in_node
; /* data offset in the node page */
527 bool inode_page_locked
; /* inode page is locked or not */
528 bool node_changed
; /* is node block changed */
529 char cur_level
; /* level of hole node page */
530 char max_level
; /* level of current page located */
531 block_t data_blkaddr
; /* block address of the node block */
534 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
535 struct page
*ipage
, struct page
*npage
, nid_t nid
)
537 memset(dn
, 0, sizeof(*dn
));
539 dn
->inode_page
= ipage
;
540 dn
->node_page
= npage
;
547 * By default, there are 6 active log areas across the whole main area.
548 * When considering hot and cold data separation to reduce cleaning overhead,
549 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
551 * In the current design, you should not change the numbers intentionally.
552 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
553 * logs individually according to the underlying devices. (default: 6)
554 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
555 * data and 8 for node logs.
557 #define NR_CURSEG_DATA_TYPE (3)
558 #define NR_CURSEG_NODE_TYPE (3)
559 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
562 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
563 CURSEG_WARM_DATA
, /* data blocks */
564 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
565 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
566 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
567 CURSEG_COLD_NODE
, /* indirect node blocks */
569 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
573 struct completion wait
;
574 struct llist_node llnode
;
578 struct flush_cmd_control
{
579 struct task_struct
*f2fs_issue_flush
; /* flush thread */
580 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
581 struct llist_head issue_list
; /* list for command issue */
582 struct llist_node
*dispatch_list
; /* list for command dispatch */
585 struct f2fs_sm_info
{
586 struct sit_info
*sit_info
; /* whole segment information */
587 struct free_segmap_info
*free_info
; /* free segment information */
588 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
589 struct curseg_info
*curseg_array
; /* active segment information */
591 block_t seg0_blkaddr
; /* block address of 0'th segment */
592 block_t main_blkaddr
; /* start block address of main area */
593 block_t ssa_blkaddr
; /* start block address of SSA area */
595 unsigned int segment_count
; /* total # of segments */
596 unsigned int main_segments
; /* # of segments in main area */
597 unsigned int reserved_segments
; /* # of reserved segments */
598 unsigned int ovp_segments
; /* # of overprovision segments */
600 /* a threshold to reclaim prefree segments */
601 unsigned int rec_prefree_segments
;
603 /* for small discard management */
604 struct list_head discard_list
; /* 4KB discard list */
605 int nr_discards
; /* # of discards in the list */
606 int max_discards
; /* max. discards to be issued */
608 /* for batched trimming */
609 unsigned int trim_sections
; /* # of sections to trim */
611 struct list_head sit_entry_set
; /* sit entry set list */
613 unsigned int ipu_policy
; /* in-place-update policy */
614 unsigned int min_ipu_util
; /* in-place-update threshold */
615 unsigned int min_fsync_blocks
; /* threshold for fsync */
617 /* for flush command control */
618 struct flush_cmd_control
*cmd_control_info
;
626 * COUNT_TYPE for monitoring
628 * f2fs monitors the number of several block types such as on-writeback,
629 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
642 * The below are the page types of bios used in submit_bio().
643 * The available types are:
644 * DATA User data pages. It operates as async mode.
645 * NODE Node pages. It operates as async mode.
646 * META FS metadata pages such as SIT, NAT, CP.
647 * NR_PAGE_TYPE The number of page types.
648 * META_FLUSH Make sure the previous pages are written
649 * with waiting the bio's completion
650 * ... Only can be used with META.
652 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
659 INMEM
, /* the below types are used by tracepoints only. */
666 struct f2fs_io_info
{
667 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
668 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
669 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
670 block_t new_blkaddr
; /* new block address to be written */
671 block_t old_blkaddr
; /* old block address before Cow */
672 struct page
*page
; /* page to be written */
673 struct page
*encrypted_page
; /* encrypted page */
676 #define is_read_io(rw) (((rw) & 1) == READ)
677 struct f2fs_bio_info
{
678 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
679 struct bio
*bio
; /* bios to merge */
680 sector_t last_block_in_bio
; /* last block number */
681 struct f2fs_io_info fio
; /* store buffered io info. */
682 struct rw_semaphore io_rwsem
; /* blocking op for bio */
686 DIR_INODE
, /* for dirty dir inode */
687 FILE_INODE
, /* for dirty regular/symlink inode */
691 /* for inner inode cache management */
692 struct inode_management
{
693 struct radix_tree_root ino_root
; /* ino entry array */
694 spinlock_t ino_lock
; /* for ino entry lock */
695 struct list_head ino_list
; /* inode list head */
696 unsigned long ino_num
; /* number of entries */
699 /* For s_flag in struct f2fs_sb_info */
701 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
702 SBI_IS_CLOSE
, /* specify unmounting */
703 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
704 SBI_POR_DOING
, /* recovery is doing or not */
705 SBI_NEED_SB_WRITE
, /* need to recover superblock */
714 #ifdef CONFIG_F2FS_FS_ENCRYPTION
715 #define F2FS_KEY_DESC_PREFIX "f2fs:"
716 #define F2FS_KEY_DESC_PREFIX_SIZE 5
718 struct f2fs_sb_info
{
719 struct super_block
*sb
; /* pointer to VFS super block */
720 struct proc_dir_entry
*s_proc
; /* proc entry */
721 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
722 int valid_super_block
; /* valid super block no */
723 int s_flag
; /* flags for sbi */
725 #ifdef CONFIG_F2FS_FS_ENCRYPTION
726 u8 key_prefix
[F2FS_KEY_DESC_PREFIX_SIZE
];
729 /* for node-related operations */
730 struct f2fs_nm_info
*nm_info
; /* node manager */
731 struct inode
*node_inode
; /* cache node blocks */
733 /* for segment-related operations */
734 struct f2fs_sm_info
*sm_info
; /* segment manager */
736 /* for bio operations */
737 struct f2fs_bio_info read_io
; /* for read bios */
738 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
741 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
742 struct inode
*meta_inode
; /* cache meta blocks */
743 struct mutex cp_mutex
; /* checkpoint procedure lock */
744 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
745 struct rw_semaphore node_write
; /* locking node writes */
746 struct mutex writepages
; /* mutex for writepages() */
747 wait_queue_head_t cp_wait
;
748 unsigned long last_time
[MAX_TIME
]; /* to store time in jiffies */
749 long interval_time
[MAX_TIME
]; /* to store thresholds */
751 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
753 /* for orphan inode, use 0'th array */
754 unsigned int max_orphans
; /* max orphan inodes */
756 /* for inode management */
757 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
758 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
760 /* for extent tree cache */
761 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
762 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
763 struct list_head extent_list
; /* lru list for shrinker */
764 spinlock_t extent_lock
; /* locking extent lru list */
765 atomic_t total_ext_tree
; /* extent tree count */
766 struct list_head zombie_list
; /* extent zombie tree list */
767 atomic_t total_zombie_tree
; /* extent zombie tree count */
768 atomic_t total_ext_node
; /* extent info count */
770 /* basic filesystem units */
771 unsigned int log_sectors_per_block
; /* log2 sectors per block */
772 unsigned int log_blocksize
; /* log2 block size */
773 unsigned int blocksize
; /* block size */
774 unsigned int root_ino_num
; /* root inode number*/
775 unsigned int node_ino_num
; /* node inode number*/
776 unsigned int meta_ino_num
; /* meta inode number*/
777 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
778 unsigned int blocks_per_seg
; /* blocks per segment */
779 unsigned int segs_per_sec
; /* segments per section */
780 unsigned int secs_per_zone
; /* sections per zone */
781 unsigned int total_sections
; /* total section count */
782 unsigned int total_node_count
; /* total node block count */
783 unsigned int total_valid_node_count
; /* valid node block count */
784 unsigned int total_valid_inode_count
; /* valid inode count */
785 loff_t max_file_blocks
; /* max block index of file */
786 int active_logs
; /* # of active logs */
787 int dir_level
; /* directory level */
789 block_t user_block_count
; /* # of user blocks */
790 block_t total_valid_block_count
; /* # of valid blocks */
791 block_t alloc_valid_block_count
; /* # of allocated blocks */
792 block_t discard_blks
; /* discard command candidats */
793 block_t last_valid_block_count
; /* for recovery */
794 u32 s_next_generation
; /* for NFS support */
795 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
797 struct f2fs_mount_info mount_opt
; /* mount options */
799 /* for cleaning operations */
800 struct mutex gc_mutex
; /* mutex for GC */
801 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
802 unsigned int cur_victim_sec
; /* current victim section num */
804 /* maximum # of trials to find a victim segment for SSR and GC */
805 unsigned int max_victim_search
;
808 * for stat information.
809 * one is for the LFS mode, and the other is for the SSR mode.
811 #ifdef CONFIG_F2FS_STAT_FS
812 struct f2fs_stat_info
*stat_info
; /* FS status information */
813 unsigned int segment_count
[2]; /* # of allocated segments */
814 unsigned int block_count
[2]; /* # of allocated blocks */
815 atomic_t inplace_count
; /* # of inplace update */
816 atomic64_t total_hit_ext
; /* # of lookup extent cache */
817 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
818 atomic64_t read_hit_largest
; /* # of hit largest extent node */
819 atomic64_t read_hit_cached
; /* # of hit cached extent node */
820 atomic_t inline_xattr
; /* # of inline_xattr inodes */
821 atomic_t inline_inode
; /* # of inline_data inodes */
822 atomic_t inline_dir
; /* # of inline_dentry inodes */
823 int bg_gc
; /* background gc calls */
824 unsigned int ndirty_inode
[NR_INODE_TYPE
]; /* # of dirty inodes */
826 unsigned int last_victim
[2]; /* last victim segment # */
827 spinlock_t stat_lock
; /* lock for stat operations */
829 /* For sysfs suppport */
830 struct kobject s_kobj
;
831 struct completion s_kobj_unregister
;
833 /* For shrinker support */
834 struct list_head s_list
;
835 struct mutex umount_mutex
;
836 unsigned int shrinker_run_no
;
838 /* For write statistics */
839 u64 sectors_written_start
;
842 /* Reference to checksum algorithm driver via cryptoapi */
843 struct crypto_shash
*s_chksum_driver
;
846 /* For write statistics. Suppose sector size is 512 bytes,
847 * and the return value is in kbytes. s is of struct f2fs_sb_info.
849 #define BD_PART_WRITTEN(s) \
850 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
851 s->sectors_written_start) >> 1)
853 static inline void f2fs_update_time(struct f2fs_sb_info
*sbi
, int type
)
855 sbi
->last_time
[type
] = jiffies
;
858 static inline bool f2fs_time_over(struct f2fs_sb_info
*sbi
, int type
)
860 struct timespec ts
= {sbi
->interval_time
[type
], 0};
861 unsigned long interval
= timespec_to_jiffies(&ts
);
863 return time_after(jiffies
, sbi
->last_time
[type
] + interval
);
866 static inline bool is_idle(struct f2fs_sb_info
*sbi
)
868 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
869 struct request_queue
*q
= bdev_get_queue(bdev
);
870 struct request_list
*rl
= &q
->root_rl
;
872 if (rl
->count
[BLK_RW_SYNC
] || rl
->count
[BLK_RW_ASYNC
])
875 return f2fs_time_over(sbi
, REQ_TIME
);
881 static inline u32
f2fs_crc32(struct f2fs_sb_info
*sbi
, const void *address
,
884 SHASH_DESC_ON_STACK(shash
, sbi
->s_chksum_driver
);
885 u32
*ctx
= (u32
*)shash_desc_ctx(shash
);
888 shash
->tfm
= sbi
->s_chksum_driver
;
890 *ctx
= F2FS_SUPER_MAGIC
;
892 err
= crypto_shash_update(shash
, address
, length
);
898 static inline bool f2fs_crc_valid(struct f2fs_sb_info
*sbi
, __u32 blk_crc
,
899 void *buf
, size_t buf_size
)
901 return f2fs_crc32(sbi
, buf
, buf_size
) == blk_crc
;
904 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
906 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
909 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
911 return sb
->s_fs_info
;
914 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
916 return F2FS_SB(inode
->i_sb
);
919 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
921 return F2FS_I_SB(mapping
->host
);
924 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
926 return F2FS_M_SB(page
->mapping
);
929 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
931 return (struct f2fs_super_block
*)(sbi
->raw_super
);
934 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
936 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
939 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
941 return (struct f2fs_node
*)page_address(page
);
944 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
946 return &((struct f2fs_node
*)page_address(page
))->i
;
949 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
951 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
954 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
956 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
959 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
961 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
964 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
966 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
969 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
971 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
974 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
976 return sbi
->meta_inode
->i_mapping
;
979 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
981 return sbi
->node_inode
->i_mapping
;
984 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
986 return sbi
->s_flag
& (0x01 << type
);
989 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
991 sbi
->s_flag
|= (0x01 << type
);
994 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
996 sbi
->s_flag
&= ~(0x01 << type
);
999 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
1001 return le64_to_cpu(cp
->checkpoint_ver
);
1004 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1006 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1007 return ckpt_flags
& f
;
1010 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1012 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1014 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1017 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1019 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1021 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1024 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
1026 down_read(&sbi
->cp_rwsem
);
1029 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
1031 up_read(&sbi
->cp_rwsem
);
1034 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
1036 down_write(&sbi
->cp_rwsem
);
1039 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
1041 up_write(&sbi
->cp_rwsem
);
1044 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
1046 int reason
= CP_SYNC
;
1048 if (test_opt(sbi
, FASTBOOT
))
1049 reason
= CP_FASTBOOT
;
1050 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
1055 static inline bool __remain_node_summaries(int reason
)
1057 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
1060 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
1062 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
1063 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1067 * Check whether the given nid is within node id range.
1069 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1071 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1073 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1078 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1081 * Check whether the inode has blocks or not
1083 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1085 if (F2FS_I(inode
)->i_xattr_nid
)
1086 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1088 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1091 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1093 return ofs
== XATTR_NODE_OFFSET
;
1096 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1097 struct inode
*inode
, blkcnt_t count
)
1099 block_t valid_block_count
;
1101 spin_lock(&sbi
->stat_lock
);
1102 #ifdef CONFIG_F2FS_FAULT_INJECTION
1103 if (time_to_inject(FAULT_BLOCK
)) {
1104 spin_unlock(&sbi
->stat_lock
);
1109 sbi
->total_valid_block_count
+ (block_t
)count
;
1110 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1111 spin_unlock(&sbi
->stat_lock
);
1114 inode
->i_blocks
+= count
;
1115 sbi
->total_valid_block_count
= valid_block_count
;
1116 sbi
->alloc_valid_block_count
+= (block_t
)count
;
1117 spin_unlock(&sbi
->stat_lock
);
1121 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1122 struct inode
*inode
,
1125 spin_lock(&sbi
->stat_lock
);
1126 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1127 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1128 inode
->i_blocks
-= count
;
1129 sbi
->total_valid_block_count
-= (block_t
)count
;
1130 spin_unlock(&sbi
->stat_lock
);
1133 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1135 atomic_inc(&sbi
->nr_pages
[count_type
]);
1136 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1139 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1141 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
1142 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1143 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1146 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1148 atomic_dec(&sbi
->nr_pages
[count_type
]);
1151 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1153 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1154 !S_ISLNK(inode
->i_mode
))
1157 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
1158 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1159 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1162 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1164 return atomic_read(&sbi
->nr_pages
[count_type
]);
1167 static inline int get_dirty_pages(struct inode
*inode
)
1169 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
1172 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1174 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1175 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
1176 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
1179 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1181 return sbi
->total_valid_block_count
;
1184 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1186 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1188 /* return NAT or SIT bitmap */
1189 if (flag
== NAT_BITMAP
)
1190 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1191 else if (flag
== SIT_BITMAP
)
1192 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1197 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1199 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1202 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1204 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1207 if (__cp_payload(sbi
) > 0) {
1208 if (flag
== NAT_BITMAP
)
1209 return &ckpt
->sit_nat_version_bitmap
;
1211 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1213 offset
= (flag
== NAT_BITMAP
) ?
1214 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1215 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1219 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1222 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1223 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1225 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1228 * odd numbered checkpoint should at cp segment 0
1229 * and even segment must be at cp segment 1
1231 if (!(ckpt_version
& 1))
1232 start_addr
+= sbi
->blocks_per_seg
;
1237 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1239 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1242 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1243 struct inode
*inode
)
1245 block_t valid_block_count
;
1246 unsigned int valid_node_count
;
1248 spin_lock(&sbi
->stat_lock
);
1250 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1251 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1252 spin_unlock(&sbi
->stat_lock
);
1256 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1257 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1258 spin_unlock(&sbi
->stat_lock
);
1265 sbi
->alloc_valid_block_count
++;
1266 sbi
->total_valid_node_count
++;
1267 sbi
->total_valid_block_count
++;
1268 spin_unlock(&sbi
->stat_lock
);
1273 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1274 struct inode
*inode
)
1276 spin_lock(&sbi
->stat_lock
);
1278 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1279 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1280 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1283 sbi
->total_valid_node_count
--;
1284 sbi
->total_valid_block_count
--;
1286 spin_unlock(&sbi
->stat_lock
);
1289 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1291 return sbi
->total_valid_node_count
;
1294 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1296 spin_lock(&sbi
->stat_lock
);
1297 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1298 sbi
->total_valid_inode_count
++;
1299 spin_unlock(&sbi
->stat_lock
);
1302 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1304 spin_lock(&sbi
->stat_lock
);
1305 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1306 sbi
->total_valid_inode_count
--;
1307 spin_unlock(&sbi
->stat_lock
);
1310 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1312 return sbi
->total_valid_inode_count
;
1315 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1316 pgoff_t index
, bool for_write
)
1318 #ifdef CONFIG_F2FS_FAULT_INJECTION
1319 struct page
*page
= find_lock_page(mapping
, index
);
1323 if (time_to_inject(FAULT_PAGE_ALLOC
))
1327 return grab_cache_page(mapping
, index
);
1328 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1331 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1333 char *src_kaddr
= kmap(src
);
1334 char *dst_kaddr
= kmap(dst
);
1336 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1341 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1347 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1353 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1356 f2fs_put_page(dn
->node_page
, 1);
1357 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1358 f2fs_put_page(dn
->inode_page
, 0);
1359 dn
->node_page
= NULL
;
1360 dn
->inode_page
= NULL
;
1363 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1366 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1369 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1374 entry
= kmem_cache_alloc(cachep
, flags
);
1376 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1380 static inline struct bio
*f2fs_bio_alloc(int npages
)
1384 /* No failure on bio allocation */
1385 bio
= bio_alloc(GFP_NOIO
, npages
);
1387 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1391 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1392 unsigned long index
, void *item
)
1394 while (radix_tree_insert(root
, index
, item
))
1398 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1400 static inline bool IS_INODE(struct page
*page
)
1402 struct f2fs_node
*p
= F2FS_NODE(page
);
1403 return RAW_IS_INODE(p
);
1406 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1408 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1411 static inline block_t
datablock_addr(struct page
*node_page
,
1412 unsigned int offset
)
1414 struct f2fs_node
*raw_node
;
1416 raw_node
= F2FS_NODE(node_page
);
1417 addr_array
= blkaddr_in_node(raw_node
);
1418 return le32_to_cpu(addr_array
[offset
]);
1421 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1426 mask
= 1 << (7 - (nr
& 0x07));
1427 return mask
& *addr
;
1430 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1435 mask
= 1 << (7 - (nr
& 0x07));
1439 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1444 mask
= 1 << (7 - (nr
& 0x07));
1448 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1454 mask
= 1 << (7 - (nr
& 0x07));
1460 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1466 mask
= 1 << (7 - (nr
& 0x07));
1472 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1477 mask
= 1 << (7 - (nr
& 0x07));
1481 /* used for f2fs_inode_info->flags */
1483 FI_NEW_INODE
, /* indicate newly allocated inode */
1484 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1485 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1486 FI_INC_LINK
, /* need to increment i_nlink */
1487 FI_ACL_MODE
, /* indicate acl mode */
1488 FI_NO_ALLOC
, /* should not allocate any blocks */
1489 FI_FREE_NID
, /* free allocated nide */
1490 FI_UPDATE_DIR
, /* should update inode block for consistency */
1491 FI_DELAY_IPUT
, /* used for the recovery */
1492 FI_NO_EXTENT
, /* not to use the extent cache */
1493 FI_INLINE_XATTR
, /* used for inline xattr */
1494 FI_INLINE_DATA
, /* used for inline data*/
1495 FI_INLINE_DENTRY
, /* used for inline dentry */
1496 FI_APPEND_WRITE
, /* inode has appended data */
1497 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1498 FI_NEED_IPU
, /* used for ipu per file */
1499 FI_ATOMIC_FILE
, /* indicate atomic file */
1500 FI_VOLATILE_FILE
, /* indicate volatile file */
1501 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1502 FI_DROP_CACHE
, /* drop dirty page cache */
1503 FI_DATA_EXIST
, /* indicate data exists */
1504 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1505 FI_DO_DEFRAG
, /* indicate defragment is running */
1506 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1509 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1511 if (!test_bit(flag
, &fi
->flags
))
1512 set_bit(flag
, &fi
->flags
);
1515 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1517 return test_bit(flag
, &fi
->flags
);
1520 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1522 if (test_bit(flag
, &fi
->flags
))
1523 clear_bit(flag
, &fi
->flags
);
1526 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1528 fi
->i_acl_mode
= mode
;
1529 set_inode_flag(fi
, FI_ACL_MODE
);
1532 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1533 struct f2fs_inode
*ri
)
1535 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1536 set_inode_flag(fi
, FI_INLINE_XATTR
);
1537 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1538 set_inode_flag(fi
, FI_INLINE_DATA
);
1539 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1540 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1541 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1542 set_inode_flag(fi
, FI_DATA_EXIST
);
1543 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1544 set_inode_flag(fi
, FI_INLINE_DOTS
);
1547 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1548 struct f2fs_inode
*ri
)
1552 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1553 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1554 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1555 ri
->i_inline
|= F2FS_INLINE_DATA
;
1556 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1557 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1558 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1559 ri
->i_inline
|= F2FS_DATA_EXIST
;
1560 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1561 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1564 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1566 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1569 static inline unsigned int addrs_per_inode(struct inode
*inode
)
1571 if (f2fs_has_inline_xattr(inode
))
1572 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1573 return DEF_ADDRS_PER_INODE
;
1576 static inline void *inline_xattr_addr(struct page
*page
)
1578 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1579 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1580 F2FS_INLINE_XATTR_ADDRS
]);
1583 static inline int inline_xattr_size(struct inode
*inode
)
1585 if (f2fs_has_inline_xattr(inode
))
1586 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1591 static inline int f2fs_has_inline_data(struct inode
*inode
)
1593 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1596 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1598 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1599 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1602 static inline int f2fs_exist_data(struct inode
*inode
)
1604 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1607 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1609 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1612 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1614 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1617 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1619 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1622 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1624 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1627 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1629 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1632 static inline void *inline_data_addr(struct page
*page
)
1634 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1635 return (void *)&(ri
->i_addr
[1]);
1638 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1640 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1643 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1645 if (!f2fs_has_inline_dentry(dir
))
1649 static inline int is_file(struct inode
*inode
, int type
)
1651 return F2FS_I(inode
)->i_advise
& type
;
1654 static inline void set_file(struct inode
*inode
, int type
)
1656 F2FS_I(inode
)->i_advise
|= type
;
1659 static inline void clear_file(struct inode
*inode
, int type
)
1661 F2FS_I(inode
)->i_advise
&= ~type
;
1664 static inline int f2fs_readonly(struct super_block
*sb
)
1666 return sb
->s_flags
& MS_RDONLY
;
1669 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1671 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1674 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1676 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1677 sbi
->sb
->s_flags
|= MS_RDONLY
;
1680 static inline bool is_dot_dotdot(const struct qstr
*str
)
1682 if (str
->len
== 1 && str
->name
[0] == '.')
1685 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1691 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1693 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1694 is_inode_flag_set(F2FS_I(inode
), FI_NO_EXTENT
))
1697 return S_ISREG(inode
->i_mode
);
1700 static inline void *f2fs_kmalloc(size_t size
, gfp_t flags
)
1702 #ifdef CONFIG_F2FS_FAULT_INJECTION
1703 if (time_to_inject(FAULT_KMALLOC
))
1706 return kmalloc(size
, flags
);
1709 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1713 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1715 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1719 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1723 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1725 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1729 #define get_inode_mode(i) \
1730 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1731 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1733 /* get offset of first page in next direct node */
1734 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1735 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1736 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1737 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1742 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1743 void truncate_data_blocks(struct dnode_of_data
*);
1744 int truncate_blocks(struct inode
*, u64
, bool);
1745 int f2fs_truncate(struct inode
*, bool);
1746 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1747 int f2fs_setattr(struct dentry
*, struct iattr
*);
1748 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1749 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1750 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1751 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1756 void f2fs_set_inode_flags(struct inode
*);
1757 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1758 int try_to_free_nats(struct f2fs_sb_info
*, int);
1759 int update_inode(struct inode
*, struct page
*);
1760 int update_inode_page(struct inode
*);
1761 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1762 void f2fs_evict_inode(struct inode
*);
1763 void handle_failed_inode(struct inode
*);
1768 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1773 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1774 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1775 unsigned char get_de_type(struct f2fs_dir_entry
*);
1776 struct f2fs_dir_entry
*find_target_dentry(struct fscrypt_name
*,
1777 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1778 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1779 unsigned int, struct fscrypt_str
*);
1780 void do_make_empty_dir(struct inode
*, struct inode
*,
1781 struct f2fs_dentry_ptr
*);
1782 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1783 const struct qstr
*, struct page
*);
1784 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1785 int room_for_filename(const void *, int, int);
1786 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1787 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1789 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1790 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1791 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1792 struct page
*, struct inode
*);
1793 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1794 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1795 const struct qstr
*, f2fs_hash_t
, unsigned int);
1796 int f2fs_add_regular_entry(struct inode
*, const struct qstr
*,
1797 struct inode
*, nid_t
, umode_t
);
1798 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1800 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1802 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1803 bool f2fs_empty_dir(struct inode
*);
1805 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1807 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1808 inode
, inode
->i_ino
, inode
->i_mode
);
1814 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1815 int f2fs_sync_fs(struct super_block
*, int);
1816 extern __printf(3, 4)
1817 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1818 int sanity_check_ckpt(struct f2fs_sb_info
*sbi
);
1823 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1828 struct dnode_of_data
;
1831 bool available_free_memory(struct f2fs_sb_info
*, int);
1832 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1833 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1834 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1835 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1836 pgoff_t
get_next_page_offset(struct dnode_of_data
*, pgoff_t
);
1837 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1838 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1839 int truncate_xattr_node(struct inode
*, struct page
*);
1840 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1841 int remove_inode_page(struct inode
*);
1842 struct page
*new_inode_page(struct inode
*);
1843 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1844 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1845 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1846 struct page
*get_node_page_ra(struct page
*, int);
1847 void sync_inode_page(struct dnode_of_data
*);
1848 void move_node_page(struct page
*, int);
1849 int fsync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*,
1851 int sync_node_pages(struct f2fs_sb_info
*, struct writeback_control
*);
1852 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1853 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1854 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1855 int try_to_free_nids(struct f2fs_sb_info
*, int);
1856 void recover_inline_xattr(struct inode
*, struct page
*);
1857 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1858 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1859 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1860 struct f2fs_summary_block
*);
1861 void flush_nat_entries(struct f2fs_sb_info
*);
1862 int build_node_manager(struct f2fs_sb_info
*);
1863 void destroy_node_manager(struct f2fs_sb_info
*);
1864 int __init
create_node_manager_caches(void);
1865 void destroy_node_manager_caches(void);
1870 void register_inmem_page(struct inode
*, struct page
*);
1871 void drop_inmem_pages(struct inode
*);
1872 int commit_inmem_pages(struct inode
*);
1873 void f2fs_balance_fs(struct f2fs_sb_info
*, bool);
1874 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1875 int f2fs_issue_flush(struct f2fs_sb_info
*);
1876 int create_flush_cmd_control(struct f2fs_sb_info
*);
1877 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1878 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1879 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
1880 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1881 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1882 void release_discard_addrs(struct f2fs_sb_info
*);
1883 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1884 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1885 void allocate_new_segments(struct f2fs_sb_info
*);
1886 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1887 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1888 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1889 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1890 void write_node_page(unsigned int, struct f2fs_io_info
*);
1891 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1892 void rewrite_data_page(struct f2fs_io_info
*);
1893 void __f2fs_replace_block(struct f2fs_sb_info
*, struct f2fs_summary
*,
1894 block_t
, block_t
, bool, bool);
1895 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
1896 block_t
, block_t
, unsigned char, bool, bool);
1897 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1898 block_t
, block_t
*, struct f2fs_summary
*, int);
1899 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
, bool);
1900 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
1901 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1902 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1903 int lookup_journal_in_cursum(struct f2fs_journal
*, int, unsigned int, int);
1904 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1905 int build_segment_manager(struct f2fs_sb_info
*);
1906 void destroy_segment_manager(struct f2fs_sb_info
*);
1907 int __init
create_segment_manager_caches(void);
1908 void destroy_segment_manager_caches(void);
1913 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1914 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1915 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
1916 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
1917 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
1918 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1919 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1920 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1921 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1922 void release_ino_entry(struct f2fs_sb_info
*, bool);
1923 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1924 int acquire_orphan_inode(struct f2fs_sb_info
*);
1925 void release_orphan_inode(struct f2fs_sb_info
*);
1926 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1927 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1928 int recover_orphan_inodes(struct f2fs_sb_info
*);
1929 int get_valid_checkpoint(struct f2fs_sb_info
*);
1930 void update_dirty_page(struct inode
*, struct page
*);
1931 void add_dirty_dir_inode(struct inode
*);
1932 void remove_dirty_inode(struct inode
*);
1933 int sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
1934 int write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1935 void init_ino_entry_info(struct f2fs_sb_info
*);
1936 int __init
create_checkpoint_caches(void);
1937 void destroy_checkpoint_caches(void);
1942 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1943 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info
*, struct inode
*,
1944 struct page
*, nid_t
, enum page_type
, int);
1945 void f2fs_flush_merged_bios(struct f2fs_sb_info
*);
1946 int f2fs_submit_page_bio(struct f2fs_io_info
*);
1947 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
1948 void set_data_blkaddr(struct dnode_of_data
*);
1949 void f2fs_update_data_blkaddr(struct dnode_of_data
*, block_t
);
1950 int reserve_new_block(struct dnode_of_data
*);
1951 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
1952 ssize_t
f2fs_preallocate_blocks(struct kiocb
*, struct iov_iter
*);
1953 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1954 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
1955 struct page
*find_data_page(struct inode
*, pgoff_t
);
1956 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
1957 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1958 int do_write_data_page(struct f2fs_io_info
*);
1959 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
1960 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1961 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1962 int f2fs_release_page(struct page
*, gfp_t
);
1967 int start_gc_thread(struct f2fs_sb_info
*);
1968 void stop_gc_thread(struct f2fs_sb_info
*);
1969 block_t
start_bidx_of_node(unsigned int, struct inode
*);
1970 int f2fs_gc(struct f2fs_sb_info
*, bool);
1971 void build_gc_manager(struct f2fs_sb_info
*);
1976 int recover_fsync_data(struct f2fs_sb_info
*, bool);
1977 bool space_for_roll_forward(struct f2fs_sb_info
*);
1982 #ifdef CONFIG_F2FS_STAT_FS
1983 struct f2fs_stat_info
{
1984 struct list_head stat_list
;
1985 struct f2fs_sb_info
*sbi
;
1986 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1987 int main_area_segs
, main_area_sections
, main_area_zones
;
1988 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
1989 unsigned long long hit_total
, total_ext
;
1990 int ext_tree
, zombie_tree
, ext_node
;
1991 int ndirty_node
, ndirty_meta
;
1992 int ndirty_dent
, ndirty_dirs
, ndirty_data
, ndirty_files
;
1993 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1994 int total_count
, utilization
;
1995 int bg_gc
, inmem_pages
, wb_pages
;
1996 int inline_xattr
, inline_inode
, inline_dir
;
1997 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1998 unsigned int bimodal
, avg_vblocks
;
1999 int util_free
, util_valid
, util_invalid
;
2000 int rsvd_segs
, overp_segs
;
2001 int dirty_count
, node_pages
, meta_pages
;
2002 int prefree_count
, call_count
, cp_count
, bg_cp_count
;
2003 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
2004 int bg_node_segs
, bg_data_segs
;
2005 int tot_blks
, data_blks
, node_blks
;
2006 int bg_data_blks
, bg_node_blks
;
2007 int curseg
[NR_CURSEG_TYPE
];
2008 int cursec
[NR_CURSEG_TYPE
];
2009 int curzone
[NR_CURSEG_TYPE
];
2011 unsigned int segment_count
[2];
2012 unsigned int block_count
[2];
2013 unsigned int inplace_count
;
2014 unsigned long long base_mem
, cache_mem
, page_mem
;
2017 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
2019 return (struct f2fs_stat_info
*)sbi
->stat_info
;
2022 #define stat_inc_cp_count(si) ((si)->cp_count++)
2023 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2024 #define stat_inc_call_count(si) ((si)->call_count++)
2025 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2026 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2027 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2028 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2029 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2030 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2031 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2032 #define stat_inc_inline_xattr(inode) \
2034 if (f2fs_has_inline_xattr(inode)) \
2035 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2037 #define stat_dec_inline_xattr(inode) \
2039 if (f2fs_has_inline_xattr(inode)) \
2040 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2042 #define stat_inc_inline_inode(inode) \
2044 if (f2fs_has_inline_data(inode)) \
2045 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2047 #define stat_dec_inline_inode(inode) \
2049 if (f2fs_has_inline_data(inode)) \
2050 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2052 #define stat_inc_inline_dir(inode) \
2054 if (f2fs_has_inline_dentry(inode)) \
2055 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2057 #define stat_dec_inline_dir(inode) \
2059 if (f2fs_has_inline_dentry(inode)) \
2060 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2062 #define stat_inc_seg_type(sbi, curseg) \
2063 ((sbi)->segment_count[(curseg)->alloc_type]++)
2064 #define stat_inc_block_count(sbi, curseg) \
2065 ((sbi)->block_count[(curseg)->alloc_type]++)
2066 #define stat_inc_inplace_blocks(sbi) \
2067 (atomic_inc(&(sbi)->inplace_count))
2068 #define stat_inc_seg_count(sbi, type, gc_type) \
2070 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2072 if (type == SUM_TYPE_DATA) { \
2074 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2077 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2081 #define stat_inc_tot_blk_count(si, blks) \
2082 (si->tot_blks += (blks))
2084 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2086 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2087 stat_inc_tot_blk_count(si, blks); \
2088 si->data_blks += (blks); \
2089 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2092 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2094 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2095 stat_inc_tot_blk_count(si, blks); \
2096 si->node_blks += (blks); \
2097 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2100 int f2fs_build_stats(struct f2fs_sb_info
*);
2101 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2102 int __init
f2fs_create_root_stats(void);
2103 void f2fs_destroy_root_stats(void);
2105 #define stat_inc_cp_count(si)
2106 #define stat_inc_bg_cp_count(si)
2107 #define stat_inc_call_count(si)
2108 #define stat_inc_bggc_count(si)
2109 #define stat_inc_dirty_inode(sbi, type)
2110 #define stat_dec_dirty_inode(sbi, type)
2111 #define stat_inc_total_hit(sb)
2112 #define stat_inc_rbtree_node_hit(sb)
2113 #define stat_inc_largest_node_hit(sbi)
2114 #define stat_inc_cached_node_hit(sbi)
2115 #define stat_inc_inline_xattr(inode)
2116 #define stat_dec_inline_xattr(inode)
2117 #define stat_inc_inline_inode(inode)
2118 #define stat_dec_inline_inode(inode)
2119 #define stat_inc_inline_dir(inode)
2120 #define stat_dec_inline_dir(inode)
2121 #define stat_inc_seg_type(sbi, curseg)
2122 #define stat_inc_block_count(sbi, curseg)
2123 #define stat_inc_inplace_blocks(sbi)
2124 #define stat_inc_seg_count(sbi, type, gc_type)
2125 #define stat_inc_tot_blk_count(si, blks)
2126 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2127 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2129 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2130 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2131 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2132 static inline void f2fs_destroy_root_stats(void) { }
2135 extern const struct file_operations f2fs_dir_operations
;
2136 extern const struct file_operations f2fs_file_operations
;
2137 extern const struct inode_operations f2fs_file_inode_operations
;
2138 extern const struct address_space_operations f2fs_dblock_aops
;
2139 extern const struct address_space_operations f2fs_node_aops
;
2140 extern const struct address_space_operations f2fs_meta_aops
;
2141 extern const struct inode_operations f2fs_dir_inode_operations
;
2142 extern const struct inode_operations f2fs_symlink_inode_operations
;
2143 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2144 extern const struct inode_operations f2fs_special_inode_operations
;
2145 extern struct kmem_cache
*inode_entry_slab
;
2150 bool f2fs_may_inline_data(struct inode
*);
2151 bool f2fs_may_inline_dentry(struct inode
*);
2152 void read_inline_data(struct page
*, struct page
*);
2153 bool truncate_inline_inode(struct page
*, u64
);
2154 int f2fs_read_inline_data(struct inode
*, struct page
*);
2155 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2156 int f2fs_convert_inline_inode(struct inode
*);
2157 int f2fs_write_inline_data(struct inode
*, struct page
*);
2158 bool recover_inline_data(struct inode
*, struct page
*);
2159 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2160 struct fscrypt_name
*, struct page
**);
2161 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
2162 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2163 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2165 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2166 struct inode
*, struct inode
*);
2167 bool f2fs_empty_inline_dir(struct inode
*);
2168 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2169 struct fscrypt_str
*);
2170 int f2fs_inline_data_fiemap(struct inode
*,
2171 struct fiemap_extent_info
*, __u64
, __u64
);
2176 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2177 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2178 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2179 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2184 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2185 bool f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2186 unsigned int f2fs_destroy_extent_node(struct inode
*);
2187 void f2fs_destroy_extent_tree(struct inode
*);
2188 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2189 void f2fs_update_extent_cache(struct dnode_of_data
*);
2190 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2191 pgoff_t
, block_t
, unsigned int);
2192 void init_extent_cache_info(struct f2fs_sb_info
*);
2193 int __init
create_extent_cache(void);
2194 void destroy_extent_cache(void);
2199 static inline bool f2fs_encrypted_inode(struct inode
*inode
)
2201 return file_is_encrypt(inode
);
2204 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2206 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2207 file_set_encrypt(inode
);
2211 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2213 return bio
->bi_private
!= NULL
;
2216 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2218 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2221 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2223 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2224 umode_t mode
= inode
->i_mode
;
2226 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2232 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2233 #define fscrypt_set_d_op(i)
2234 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2235 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2236 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2237 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2238 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2239 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2240 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2241 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2242 #define fscrypt_process_policy fscrypt_notsupp_process_policy
2243 #define fscrypt_get_policy fscrypt_notsupp_get_policy
2244 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2245 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2246 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2247 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2248 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2249 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2250 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2251 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2252 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2253 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2254 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk