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 struct f2fs_sb_info
{
715 struct super_block
*sb
; /* pointer to VFS super block */
716 struct proc_dir_entry
*s_proc
; /* proc entry */
717 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
718 int valid_super_block
; /* valid super block no */
719 int s_flag
; /* flags for sbi */
721 /* for node-related operations */
722 struct f2fs_nm_info
*nm_info
; /* node manager */
723 struct inode
*node_inode
; /* cache node blocks */
725 /* for segment-related operations */
726 struct f2fs_sm_info
*sm_info
; /* segment manager */
728 /* for bio operations */
729 struct f2fs_bio_info read_io
; /* for read bios */
730 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
733 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
734 struct inode
*meta_inode
; /* cache meta blocks */
735 struct mutex cp_mutex
; /* checkpoint procedure lock */
736 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
737 struct rw_semaphore node_write
; /* locking node writes */
738 struct mutex writepages
; /* mutex for writepages() */
739 wait_queue_head_t cp_wait
;
740 unsigned long last_time
[MAX_TIME
]; /* to store time in jiffies */
741 long interval_time
[MAX_TIME
]; /* to store thresholds */
743 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
745 /* for orphan inode, use 0'th array */
746 unsigned int max_orphans
; /* max orphan inodes */
748 /* for inode management */
749 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
750 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
752 /* for extent tree cache */
753 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
754 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
755 struct list_head extent_list
; /* lru list for shrinker */
756 spinlock_t extent_lock
; /* locking extent lru list */
757 atomic_t total_ext_tree
; /* extent tree count */
758 struct list_head zombie_list
; /* extent zombie tree list */
759 atomic_t total_zombie_tree
; /* extent zombie tree count */
760 atomic_t total_ext_node
; /* extent info count */
762 /* basic filesystem units */
763 unsigned int log_sectors_per_block
; /* log2 sectors per block */
764 unsigned int log_blocksize
; /* log2 block size */
765 unsigned int blocksize
; /* block size */
766 unsigned int root_ino_num
; /* root inode number*/
767 unsigned int node_ino_num
; /* node inode number*/
768 unsigned int meta_ino_num
; /* meta inode number*/
769 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
770 unsigned int blocks_per_seg
; /* blocks per segment */
771 unsigned int segs_per_sec
; /* segments per section */
772 unsigned int secs_per_zone
; /* sections per zone */
773 unsigned int total_sections
; /* total section count */
774 unsigned int total_node_count
; /* total node block count */
775 unsigned int total_valid_node_count
; /* valid node block count */
776 unsigned int total_valid_inode_count
; /* valid inode count */
777 loff_t max_file_blocks
; /* max block index of file */
778 int active_logs
; /* # of active logs */
779 int dir_level
; /* directory level */
781 block_t user_block_count
; /* # of user blocks */
782 block_t total_valid_block_count
; /* # of valid blocks */
783 block_t alloc_valid_block_count
; /* # of allocated blocks */
784 block_t discard_blks
; /* discard command candidats */
785 block_t last_valid_block_count
; /* for recovery */
786 u32 s_next_generation
; /* for NFS support */
787 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
789 struct f2fs_mount_info mount_opt
; /* mount options */
791 /* for cleaning operations */
792 struct mutex gc_mutex
; /* mutex for GC */
793 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
794 unsigned int cur_victim_sec
; /* current victim section num */
796 /* maximum # of trials to find a victim segment for SSR and GC */
797 unsigned int max_victim_search
;
800 * for stat information.
801 * one is for the LFS mode, and the other is for the SSR mode.
803 #ifdef CONFIG_F2FS_STAT_FS
804 struct f2fs_stat_info
*stat_info
; /* FS status information */
805 unsigned int segment_count
[2]; /* # of allocated segments */
806 unsigned int block_count
[2]; /* # of allocated blocks */
807 atomic_t inplace_count
; /* # of inplace update */
808 atomic64_t total_hit_ext
; /* # of lookup extent cache */
809 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
810 atomic64_t read_hit_largest
; /* # of hit largest extent node */
811 atomic64_t read_hit_cached
; /* # of hit cached extent node */
812 atomic_t inline_xattr
; /* # of inline_xattr inodes */
813 atomic_t inline_inode
; /* # of inline_data inodes */
814 atomic_t inline_dir
; /* # of inline_dentry inodes */
815 int bg_gc
; /* background gc calls */
816 unsigned int ndirty_inode
[NR_INODE_TYPE
]; /* # of dirty inodes */
818 unsigned int last_victim
[2]; /* last victim segment # */
819 spinlock_t stat_lock
; /* lock for stat operations */
821 /* For sysfs suppport */
822 struct kobject s_kobj
;
823 struct completion s_kobj_unregister
;
825 /* For shrinker support */
826 struct list_head s_list
;
827 struct mutex umount_mutex
;
828 unsigned int shrinker_run_no
;
830 /* For write statistics */
831 u64 sectors_written_start
;
834 /* Reference to checksum algorithm driver via cryptoapi */
835 struct crypto_shash
*s_chksum_driver
;
838 /* For write statistics. Suppose sector size is 512 bytes,
839 * and the return value is in kbytes. s is of struct f2fs_sb_info.
841 #define BD_PART_WRITTEN(s) \
842 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
843 s->sectors_written_start) >> 1)
845 static inline void f2fs_update_time(struct f2fs_sb_info
*sbi
, int type
)
847 sbi
->last_time
[type
] = jiffies
;
850 static inline bool f2fs_time_over(struct f2fs_sb_info
*sbi
, int type
)
852 struct timespec ts
= {sbi
->interval_time
[type
], 0};
853 unsigned long interval
= timespec_to_jiffies(&ts
);
855 return time_after(jiffies
, sbi
->last_time
[type
] + interval
);
858 static inline bool is_idle(struct f2fs_sb_info
*sbi
)
860 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
861 struct request_queue
*q
= bdev_get_queue(bdev
);
862 struct request_list
*rl
= &q
->root_rl
;
864 if (rl
->count
[BLK_RW_SYNC
] || rl
->count
[BLK_RW_ASYNC
])
867 return f2fs_time_over(sbi
, REQ_TIME
);
873 static inline u32
f2fs_crc32(struct f2fs_sb_info
*sbi
, const void *address
,
876 SHASH_DESC_ON_STACK(shash
, sbi
->s_chksum_driver
);
877 u32
*ctx
= (u32
*)shash_desc_ctx(shash
);
880 shash
->tfm
= sbi
->s_chksum_driver
;
882 *ctx
= F2FS_SUPER_MAGIC
;
884 err
= crypto_shash_update(shash
, address
, length
);
890 static inline bool f2fs_crc_valid(struct f2fs_sb_info
*sbi
, __u32 blk_crc
,
891 void *buf
, size_t buf_size
)
893 return f2fs_crc32(sbi
, buf
, buf_size
) == blk_crc
;
896 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
898 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
901 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
903 return sb
->s_fs_info
;
906 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
908 return F2FS_SB(inode
->i_sb
);
911 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
913 return F2FS_I_SB(mapping
->host
);
916 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
918 return F2FS_M_SB(page
->mapping
);
921 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
923 return (struct f2fs_super_block
*)(sbi
->raw_super
);
926 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
928 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
931 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
933 return (struct f2fs_node
*)page_address(page
);
936 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
938 return &((struct f2fs_node
*)page_address(page
))->i
;
941 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
943 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
946 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
948 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
951 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
953 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
956 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
958 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
961 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
963 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
966 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
968 return sbi
->meta_inode
->i_mapping
;
971 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
973 return sbi
->node_inode
->i_mapping
;
976 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
978 return sbi
->s_flag
& (0x01 << type
);
981 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
983 sbi
->s_flag
|= (0x01 << type
);
986 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
988 sbi
->s_flag
&= ~(0x01 << type
);
991 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
993 return le64_to_cpu(cp
->checkpoint_ver
);
996 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
998 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
999 return ckpt_flags
& f
;
1002 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1004 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1006 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1009 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1011 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1013 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1016 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
1018 down_read(&sbi
->cp_rwsem
);
1021 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
1023 up_read(&sbi
->cp_rwsem
);
1026 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
1028 down_write(&sbi
->cp_rwsem
);
1031 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
1033 up_write(&sbi
->cp_rwsem
);
1036 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
1038 int reason
= CP_SYNC
;
1040 if (test_opt(sbi
, FASTBOOT
))
1041 reason
= CP_FASTBOOT
;
1042 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
1047 static inline bool __remain_node_summaries(int reason
)
1049 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
1052 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
1054 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
1055 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1059 * Check whether the given nid is within node id range.
1061 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1063 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1065 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1070 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1073 * Check whether the inode has blocks or not
1075 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1077 if (F2FS_I(inode
)->i_xattr_nid
)
1078 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1080 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1083 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1085 return ofs
== XATTR_NODE_OFFSET
;
1088 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1089 struct inode
*inode
, blkcnt_t count
)
1091 block_t valid_block_count
;
1093 spin_lock(&sbi
->stat_lock
);
1094 #ifdef CONFIG_F2FS_FAULT_INJECTION
1095 if (time_to_inject(FAULT_BLOCK
)) {
1096 spin_unlock(&sbi
->stat_lock
);
1101 sbi
->total_valid_block_count
+ (block_t
)count
;
1102 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1103 spin_unlock(&sbi
->stat_lock
);
1106 inode
->i_blocks
+= count
;
1107 sbi
->total_valid_block_count
= valid_block_count
;
1108 sbi
->alloc_valid_block_count
+= (block_t
)count
;
1109 spin_unlock(&sbi
->stat_lock
);
1113 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1114 struct inode
*inode
,
1117 spin_lock(&sbi
->stat_lock
);
1118 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1119 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1120 inode
->i_blocks
-= count
;
1121 sbi
->total_valid_block_count
-= (block_t
)count
;
1122 spin_unlock(&sbi
->stat_lock
);
1125 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1127 atomic_inc(&sbi
->nr_pages
[count_type
]);
1128 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1131 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1133 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
1134 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1135 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1138 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1140 atomic_dec(&sbi
->nr_pages
[count_type
]);
1143 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1145 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1146 !S_ISLNK(inode
->i_mode
))
1149 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
1150 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1151 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1154 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1156 return atomic_read(&sbi
->nr_pages
[count_type
]);
1159 static inline int get_dirty_pages(struct inode
*inode
)
1161 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
1164 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1166 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1167 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
1168 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
1171 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1173 return sbi
->total_valid_block_count
;
1176 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1178 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1180 /* return NAT or SIT bitmap */
1181 if (flag
== NAT_BITMAP
)
1182 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1183 else if (flag
== SIT_BITMAP
)
1184 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1189 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1191 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1194 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1196 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1199 if (__cp_payload(sbi
) > 0) {
1200 if (flag
== NAT_BITMAP
)
1201 return &ckpt
->sit_nat_version_bitmap
;
1203 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1205 offset
= (flag
== NAT_BITMAP
) ?
1206 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1207 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1211 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1214 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1215 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1217 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1220 * odd numbered checkpoint should at cp segment 0
1221 * and even segment must be at cp segment 1
1223 if (!(ckpt_version
& 1))
1224 start_addr
+= sbi
->blocks_per_seg
;
1229 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1231 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1234 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1235 struct inode
*inode
)
1237 block_t valid_block_count
;
1238 unsigned int valid_node_count
;
1240 spin_lock(&sbi
->stat_lock
);
1242 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1243 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1244 spin_unlock(&sbi
->stat_lock
);
1248 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1249 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1250 spin_unlock(&sbi
->stat_lock
);
1257 sbi
->alloc_valid_block_count
++;
1258 sbi
->total_valid_node_count
++;
1259 sbi
->total_valid_block_count
++;
1260 spin_unlock(&sbi
->stat_lock
);
1265 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1266 struct inode
*inode
)
1268 spin_lock(&sbi
->stat_lock
);
1270 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1271 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1272 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1275 sbi
->total_valid_node_count
--;
1276 sbi
->total_valid_block_count
--;
1278 spin_unlock(&sbi
->stat_lock
);
1281 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1283 return sbi
->total_valid_node_count
;
1286 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1288 spin_lock(&sbi
->stat_lock
);
1289 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1290 sbi
->total_valid_inode_count
++;
1291 spin_unlock(&sbi
->stat_lock
);
1294 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1296 spin_lock(&sbi
->stat_lock
);
1297 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1298 sbi
->total_valid_inode_count
--;
1299 spin_unlock(&sbi
->stat_lock
);
1302 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1304 return sbi
->total_valid_inode_count
;
1307 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1308 pgoff_t index
, bool for_write
)
1310 #ifdef CONFIG_F2FS_FAULT_INJECTION
1311 struct page
*page
= find_lock_page(mapping
, index
);
1315 if (time_to_inject(FAULT_PAGE_ALLOC
))
1319 return grab_cache_page(mapping
, index
);
1320 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1323 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1325 char *src_kaddr
= kmap(src
);
1326 char *dst_kaddr
= kmap(dst
);
1328 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1333 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1339 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1345 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1348 f2fs_put_page(dn
->node_page
, 1);
1349 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1350 f2fs_put_page(dn
->inode_page
, 0);
1351 dn
->node_page
= NULL
;
1352 dn
->inode_page
= NULL
;
1355 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1358 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1361 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1366 entry
= kmem_cache_alloc(cachep
, flags
);
1368 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1372 static inline struct bio
*f2fs_bio_alloc(int npages
)
1376 /* No failure on bio allocation */
1377 bio
= bio_alloc(GFP_NOIO
, npages
);
1379 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1383 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1384 unsigned long index
, void *item
)
1386 while (radix_tree_insert(root
, index
, item
))
1390 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1392 static inline bool IS_INODE(struct page
*page
)
1394 struct f2fs_node
*p
= F2FS_NODE(page
);
1395 return RAW_IS_INODE(p
);
1398 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1400 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1403 static inline block_t
datablock_addr(struct page
*node_page
,
1404 unsigned int offset
)
1406 struct f2fs_node
*raw_node
;
1408 raw_node
= F2FS_NODE(node_page
);
1409 addr_array
= blkaddr_in_node(raw_node
);
1410 return le32_to_cpu(addr_array
[offset
]);
1413 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1418 mask
= 1 << (7 - (nr
& 0x07));
1419 return mask
& *addr
;
1422 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1427 mask
= 1 << (7 - (nr
& 0x07));
1431 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1436 mask
= 1 << (7 - (nr
& 0x07));
1440 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1446 mask
= 1 << (7 - (nr
& 0x07));
1452 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1458 mask
= 1 << (7 - (nr
& 0x07));
1464 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1469 mask
= 1 << (7 - (nr
& 0x07));
1473 /* used for f2fs_inode_info->flags */
1475 FI_NEW_INODE
, /* indicate newly allocated inode */
1476 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1477 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1478 FI_INC_LINK
, /* need to increment i_nlink */
1479 FI_ACL_MODE
, /* indicate acl mode */
1480 FI_NO_ALLOC
, /* should not allocate any blocks */
1481 FI_FREE_NID
, /* free allocated nide */
1482 FI_UPDATE_DIR
, /* should update inode block for consistency */
1483 FI_DELAY_IPUT
, /* used for the recovery */
1484 FI_NO_EXTENT
, /* not to use the extent cache */
1485 FI_INLINE_XATTR
, /* used for inline xattr */
1486 FI_INLINE_DATA
, /* used for inline data*/
1487 FI_INLINE_DENTRY
, /* used for inline dentry */
1488 FI_APPEND_WRITE
, /* inode has appended data */
1489 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1490 FI_NEED_IPU
, /* used for ipu per file */
1491 FI_ATOMIC_FILE
, /* indicate atomic file */
1492 FI_VOLATILE_FILE
, /* indicate volatile file */
1493 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1494 FI_DROP_CACHE
, /* drop dirty page cache */
1495 FI_DATA_EXIST
, /* indicate data exists */
1496 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1497 FI_DO_DEFRAG
, /* indicate defragment is running */
1498 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1501 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1503 if (!test_bit(flag
, &fi
->flags
))
1504 set_bit(flag
, &fi
->flags
);
1507 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1509 return test_bit(flag
, &fi
->flags
);
1512 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1514 if (test_bit(flag
, &fi
->flags
))
1515 clear_bit(flag
, &fi
->flags
);
1518 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1520 fi
->i_acl_mode
= mode
;
1521 set_inode_flag(fi
, FI_ACL_MODE
);
1524 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1525 struct f2fs_inode
*ri
)
1527 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1528 set_inode_flag(fi
, FI_INLINE_XATTR
);
1529 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1530 set_inode_flag(fi
, FI_INLINE_DATA
);
1531 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1532 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1533 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1534 set_inode_flag(fi
, FI_DATA_EXIST
);
1535 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1536 set_inode_flag(fi
, FI_INLINE_DOTS
);
1539 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1540 struct f2fs_inode
*ri
)
1544 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1545 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1546 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1547 ri
->i_inline
|= F2FS_INLINE_DATA
;
1548 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1549 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1550 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1551 ri
->i_inline
|= F2FS_DATA_EXIST
;
1552 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1553 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1556 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1558 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1561 static inline unsigned int addrs_per_inode(struct inode
*inode
)
1563 if (f2fs_has_inline_xattr(inode
))
1564 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1565 return DEF_ADDRS_PER_INODE
;
1568 static inline void *inline_xattr_addr(struct page
*page
)
1570 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1571 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1572 F2FS_INLINE_XATTR_ADDRS
]);
1575 static inline int inline_xattr_size(struct inode
*inode
)
1577 if (f2fs_has_inline_xattr(inode
))
1578 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1583 static inline int f2fs_has_inline_data(struct inode
*inode
)
1585 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1588 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1590 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1591 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1594 static inline int f2fs_exist_data(struct inode
*inode
)
1596 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1599 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1601 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1604 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1606 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1609 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1611 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1614 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1616 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1619 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1621 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1624 static inline void *inline_data_addr(struct page
*page
)
1626 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1627 return (void *)&(ri
->i_addr
[1]);
1630 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1632 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1635 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1637 if (!f2fs_has_inline_dentry(dir
))
1641 static inline int is_file(struct inode
*inode
, int type
)
1643 return F2FS_I(inode
)->i_advise
& type
;
1646 static inline void set_file(struct inode
*inode
, int type
)
1648 F2FS_I(inode
)->i_advise
|= type
;
1651 static inline void clear_file(struct inode
*inode
, int type
)
1653 F2FS_I(inode
)->i_advise
&= ~type
;
1656 static inline int f2fs_readonly(struct super_block
*sb
)
1658 return sb
->s_flags
& MS_RDONLY
;
1661 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1663 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1666 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1668 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1669 sbi
->sb
->s_flags
|= MS_RDONLY
;
1672 static inline bool is_dot_dotdot(const struct qstr
*str
)
1674 if (str
->len
== 1 && str
->name
[0] == '.')
1677 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1683 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1685 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1686 is_inode_flag_set(F2FS_I(inode
), FI_NO_EXTENT
))
1689 return S_ISREG(inode
->i_mode
);
1692 static inline void *f2fs_kmalloc(size_t size
, gfp_t flags
)
1694 #ifdef CONFIG_F2FS_FAULT_INJECTION
1695 if (time_to_inject(FAULT_KMALLOC
))
1698 return kmalloc(size
, flags
);
1701 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1705 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1707 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1711 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1715 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1717 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1721 #define get_inode_mode(i) \
1722 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1723 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1725 /* get offset of first page in next direct node */
1726 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1727 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1728 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1729 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1734 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1735 void truncate_data_blocks(struct dnode_of_data
*);
1736 int truncate_blocks(struct inode
*, u64
, bool);
1737 int f2fs_truncate(struct inode
*, bool);
1738 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1739 int f2fs_setattr(struct dentry
*, struct iattr
*);
1740 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1741 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1742 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1743 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1748 void f2fs_set_inode_flags(struct inode
*);
1749 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1750 int try_to_free_nats(struct f2fs_sb_info
*, int);
1751 int update_inode(struct inode
*, struct page
*);
1752 int update_inode_page(struct inode
*);
1753 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1754 void f2fs_evict_inode(struct inode
*);
1755 void handle_failed_inode(struct inode
*);
1760 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1765 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1766 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1767 unsigned char get_de_type(struct f2fs_dir_entry
*);
1768 struct f2fs_dir_entry
*find_target_dentry(struct fscrypt_name
*,
1769 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1770 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1771 unsigned int, struct fscrypt_str
*);
1772 void do_make_empty_dir(struct inode
*, struct inode
*,
1773 struct f2fs_dentry_ptr
*);
1774 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1775 const struct qstr
*, struct page
*);
1776 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1777 int room_for_filename(const void *, int, int);
1778 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1779 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1781 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1782 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1783 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1784 struct page
*, struct inode
*);
1785 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1786 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1787 const struct qstr
*, f2fs_hash_t
, unsigned int);
1788 int f2fs_add_regular_entry(struct inode
*, const struct qstr
*,
1789 struct inode
*, nid_t
, umode_t
);
1790 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1792 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1794 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1795 bool f2fs_empty_dir(struct inode
*);
1797 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1799 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1800 inode
, inode
->i_ino
, inode
->i_mode
);
1806 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1807 int f2fs_sync_fs(struct super_block
*, int);
1808 extern __printf(3, 4)
1809 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1810 int sanity_check_ckpt(struct f2fs_sb_info
*sbi
);
1815 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1820 struct dnode_of_data
;
1823 bool available_free_memory(struct f2fs_sb_info
*, int);
1824 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1825 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1826 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1827 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1828 pgoff_t
get_next_page_offset(struct dnode_of_data
*, pgoff_t
);
1829 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1830 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1831 int truncate_xattr_node(struct inode
*, struct page
*);
1832 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1833 int remove_inode_page(struct inode
*);
1834 struct page
*new_inode_page(struct inode
*);
1835 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1836 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1837 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1838 struct page
*get_node_page_ra(struct page
*, int);
1839 void sync_inode_page(struct dnode_of_data
*);
1840 void move_node_page(struct page
*, int);
1841 int fsync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*,
1843 int sync_node_pages(struct f2fs_sb_info
*, struct writeback_control
*);
1844 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1845 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1846 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1847 int try_to_free_nids(struct f2fs_sb_info
*, int);
1848 void recover_inline_xattr(struct inode
*, struct page
*);
1849 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1850 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1851 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1852 struct f2fs_summary_block
*);
1853 void flush_nat_entries(struct f2fs_sb_info
*);
1854 int build_node_manager(struct f2fs_sb_info
*);
1855 void destroy_node_manager(struct f2fs_sb_info
*);
1856 int __init
create_node_manager_caches(void);
1857 void destroy_node_manager_caches(void);
1862 void register_inmem_page(struct inode
*, struct page
*);
1863 void drop_inmem_pages(struct inode
*);
1864 int commit_inmem_pages(struct inode
*);
1865 void f2fs_balance_fs(struct f2fs_sb_info
*, bool);
1866 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1867 int f2fs_issue_flush(struct f2fs_sb_info
*);
1868 int create_flush_cmd_control(struct f2fs_sb_info
*);
1869 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1870 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1871 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
1872 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1873 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1874 void release_discard_addrs(struct f2fs_sb_info
*);
1875 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1876 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1877 void allocate_new_segments(struct f2fs_sb_info
*);
1878 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1879 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1880 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1881 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1882 void write_node_page(unsigned int, struct f2fs_io_info
*);
1883 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1884 void rewrite_data_page(struct f2fs_io_info
*);
1885 void __f2fs_replace_block(struct f2fs_sb_info
*, struct f2fs_summary
*,
1886 block_t
, block_t
, bool, bool);
1887 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
1888 block_t
, block_t
, unsigned char, bool, bool);
1889 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1890 block_t
, block_t
*, struct f2fs_summary
*, int);
1891 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
, bool);
1892 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
1893 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1894 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1895 int lookup_journal_in_cursum(struct f2fs_journal
*, int, unsigned int, int);
1896 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1897 int build_segment_manager(struct f2fs_sb_info
*);
1898 void destroy_segment_manager(struct f2fs_sb_info
*);
1899 int __init
create_segment_manager_caches(void);
1900 void destroy_segment_manager_caches(void);
1905 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1906 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1907 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
1908 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
1909 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
1910 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1911 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1912 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1913 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1914 void release_ino_entry(struct f2fs_sb_info
*, bool);
1915 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1916 int acquire_orphan_inode(struct f2fs_sb_info
*);
1917 void release_orphan_inode(struct f2fs_sb_info
*);
1918 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1919 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1920 int recover_orphan_inodes(struct f2fs_sb_info
*);
1921 int get_valid_checkpoint(struct f2fs_sb_info
*);
1922 void update_dirty_page(struct inode
*, struct page
*);
1923 void add_dirty_dir_inode(struct inode
*);
1924 void remove_dirty_inode(struct inode
*);
1925 int sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
1926 int write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1927 void init_ino_entry_info(struct f2fs_sb_info
*);
1928 int __init
create_checkpoint_caches(void);
1929 void destroy_checkpoint_caches(void);
1934 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1935 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info
*, struct inode
*,
1936 struct page
*, nid_t
, enum page_type
, int);
1937 void f2fs_flush_merged_bios(struct f2fs_sb_info
*);
1938 int f2fs_submit_page_bio(struct f2fs_io_info
*);
1939 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
1940 void set_data_blkaddr(struct dnode_of_data
*);
1941 void f2fs_update_data_blkaddr(struct dnode_of_data
*, block_t
);
1942 int reserve_new_block(struct dnode_of_data
*);
1943 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
1944 ssize_t
f2fs_preallocate_blocks(struct kiocb
*, struct iov_iter
*);
1945 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1946 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
1947 struct page
*find_data_page(struct inode
*, pgoff_t
);
1948 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
1949 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1950 int do_write_data_page(struct f2fs_io_info
*);
1951 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
1952 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1953 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1954 int f2fs_release_page(struct page
*, gfp_t
);
1959 int start_gc_thread(struct f2fs_sb_info
*);
1960 void stop_gc_thread(struct f2fs_sb_info
*);
1961 block_t
start_bidx_of_node(unsigned int, struct inode
*);
1962 int f2fs_gc(struct f2fs_sb_info
*, bool);
1963 void build_gc_manager(struct f2fs_sb_info
*);
1968 int recover_fsync_data(struct f2fs_sb_info
*, bool);
1969 bool space_for_roll_forward(struct f2fs_sb_info
*);
1974 #ifdef CONFIG_F2FS_STAT_FS
1975 struct f2fs_stat_info
{
1976 struct list_head stat_list
;
1977 struct f2fs_sb_info
*sbi
;
1978 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1979 int main_area_segs
, main_area_sections
, main_area_zones
;
1980 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
1981 unsigned long long hit_total
, total_ext
;
1982 int ext_tree
, zombie_tree
, ext_node
;
1983 int ndirty_node
, ndirty_meta
;
1984 int ndirty_dent
, ndirty_dirs
, ndirty_data
, ndirty_files
;
1985 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1986 int total_count
, utilization
;
1987 int bg_gc
, inmem_pages
, wb_pages
;
1988 int inline_xattr
, inline_inode
, inline_dir
;
1989 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1990 unsigned int bimodal
, avg_vblocks
;
1991 int util_free
, util_valid
, util_invalid
;
1992 int rsvd_segs
, overp_segs
;
1993 int dirty_count
, node_pages
, meta_pages
;
1994 int prefree_count
, call_count
, cp_count
, bg_cp_count
;
1995 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1996 int bg_node_segs
, bg_data_segs
;
1997 int tot_blks
, data_blks
, node_blks
;
1998 int bg_data_blks
, bg_node_blks
;
1999 int curseg
[NR_CURSEG_TYPE
];
2000 int cursec
[NR_CURSEG_TYPE
];
2001 int curzone
[NR_CURSEG_TYPE
];
2003 unsigned int segment_count
[2];
2004 unsigned int block_count
[2];
2005 unsigned int inplace_count
;
2006 unsigned long long base_mem
, cache_mem
, page_mem
;
2009 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
2011 return (struct f2fs_stat_info
*)sbi
->stat_info
;
2014 #define stat_inc_cp_count(si) ((si)->cp_count++)
2015 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2016 #define stat_inc_call_count(si) ((si)->call_count++)
2017 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2018 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2019 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2020 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2021 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2022 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2023 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2024 #define stat_inc_inline_xattr(inode) \
2026 if (f2fs_has_inline_xattr(inode)) \
2027 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2029 #define stat_dec_inline_xattr(inode) \
2031 if (f2fs_has_inline_xattr(inode)) \
2032 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2034 #define stat_inc_inline_inode(inode) \
2036 if (f2fs_has_inline_data(inode)) \
2037 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2039 #define stat_dec_inline_inode(inode) \
2041 if (f2fs_has_inline_data(inode)) \
2042 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2044 #define stat_inc_inline_dir(inode) \
2046 if (f2fs_has_inline_dentry(inode)) \
2047 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2049 #define stat_dec_inline_dir(inode) \
2051 if (f2fs_has_inline_dentry(inode)) \
2052 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2054 #define stat_inc_seg_type(sbi, curseg) \
2055 ((sbi)->segment_count[(curseg)->alloc_type]++)
2056 #define stat_inc_block_count(sbi, curseg) \
2057 ((sbi)->block_count[(curseg)->alloc_type]++)
2058 #define stat_inc_inplace_blocks(sbi) \
2059 (atomic_inc(&(sbi)->inplace_count))
2060 #define stat_inc_seg_count(sbi, type, gc_type) \
2062 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2064 if (type == SUM_TYPE_DATA) { \
2066 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2069 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2073 #define stat_inc_tot_blk_count(si, blks) \
2074 (si->tot_blks += (blks))
2076 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2078 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2079 stat_inc_tot_blk_count(si, blks); \
2080 si->data_blks += (blks); \
2081 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2084 #define stat_inc_node_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->node_blks += (blks); \
2089 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2092 int f2fs_build_stats(struct f2fs_sb_info
*);
2093 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2094 int __init
f2fs_create_root_stats(void);
2095 void f2fs_destroy_root_stats(void);
2097 #define stat_inc_cp_count(si)
2098 #define stat_inc_bg_cp_count(si)
2099 #define stat_inc_call_count(si)
2100 #define stat_inc_bggc_count(si)
2101 #define stat_inc_dirty_inode(sbi, type)
2102 #define stat_dec_dirty_inode(sbi, type)
2103 #define stat_inc_total_hit(sb)
2104 #define stat_inc_rbtree_node_hit(sb)
2105 #define stat_inc_largest_node_hit(sbi)
2106 #define stat_inc_cached_node_hit(sbi)
2107 #define stat_inc_inline_xattr(inode)
2108 #define stat_dec_inline_xattr(inode)
2109 #define stat_inc_inline_inode(inode)
2110 #define stat_dec_inline_inode(inode)
2111 #define stat_inc_inline_dir(inode)
2112 #define stat_dec_inline_dir(inode)
2113 #define stat_inc_seg_type(sbi, curseg)
2114 #define stat_inc_block_count(sbi, curseg)
2115 #define stat_inc_inplace_blocks(sbi)
2116 #define stat_inc_seg_count(sbi, type, gc_type)
2117 #define stat_inc_tot_blk_count(si, blks)
2118 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2119 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2121 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2122 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2123 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2124 static inline void f2fs_destroy_root_stats(void) { }
2127 extern const struct file_operations f2fs_dir_operations
;
2128 extern const struct file_operations f2fs_file_operations
;
2129 extern const struct inode_operations f2fs_file_inode_operations
;
2130 extern const struct address_space_operations f2fs_dblock_aops
;
2131 extern const struct address_space_operations f2fs_node_aops
;
2132 extern const struct address_space_operations f2fs_meta_aops
;
2133 extern const struct inode_operations f2fs_dir_inode_operations
;
2134 extern const struct inode_operations f2fs_symlink_inode_operations
;
2135 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2136 extern const struct inode_operations f2fs_special_inode_operations
;
2137 extern struct kmem_cache
*inode_entry_slab
;
2142 bool f2fs_may_inline_data(struct inode
*);
2143 bool f2fs_may_inline_dentry(struct inode
*);
2144 void read_inline_data(struct page
*, struct page
*);
2145 bool truncate_inline_inode(struct page
*, u64
);
2146 int f2fs_read_inline_data(struct inode
*, struct page
*);
2147 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2148 int f2fs_convert_inline_inode(struct inode
*);
2149 int f2fs_write_inline_data(struct inode
*, struct page
*);
2150 bool recover_inline_data(struct inode
*, struct page
*);
2151 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2152 struct fscrypt_name
*, struct page
**);
2153 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
2154 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2155 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2157 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2158 struct inode
*, struct inode
*);
2159 bool f2fs_empty_inline_dir(struct inode
*);
2160 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2161 struct fscrypt_str
*);
2162 int f2fs_inline_data_fiemap(struct inode
*,
2163 struct fiemap_extent_info
*, __u64
, __u64
);
2168 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2169 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2170 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2171 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2176 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2177 bool f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2178 unsigned int f2fs_destroy_extent_node(struct inode
*);
2179 void f2fs_destroy_extent_tree(struct inode
*);
2180 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2181 void f2fs_update_extent_cache(struct dnode_of_data
*);
2182 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2183 pgoff_t
, block_t
, unsigned int);
2184 void init_extent_cache_info(struct f2fs_sb_info
*);
2185 int __init
create_extent_cache(void);
2186 void destroy_extent_cache(void);
2191 static inline bool f2fs_encrypted_inode(struct inode
*inode
)
2193 return file_is_encrypt(inode
);
2196 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2198 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2199 file_set_encrypt(inode
);
2203 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2205 return bio
->bi_private
!= NULL
;
2208 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2210 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2213 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2215 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2216 umode_t mode
= inode
->i_mode
;
2218 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2224 #ifndef CONFIG_F2FS_FS_ENCRYPTION
2225 #define fscrypt_set_d_op(i)
2226 #define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2227 #define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2228 #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2229 #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2230 #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2231 #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2232 #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2233 #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2234 #define fscrypt_process_policy fscrypt_notsupp_process_policy
2235 #define fscrypt_get_policy fscrypt_notsupp_get_policy
2236 #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2237 #define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2238 #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2239 #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2240 #define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2241 #define fscrypt_free_filename fscrypt_notsupp_free_filename
2242 #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2243 #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2244 #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2245 #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2246 #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk