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>
26 #ifdef CONFIG_F2FS_CHECK_FS
27 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
28 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
30 #define f2fs_bug_on(sbi, condition) \
32 if (unlikely(condition)) { \
34 set_sbi_flag(sbi, SBI_NEED_FSCK); \
37 #define f2fs_down_write(x, y) down_write(x)
43 #define F2FS_MOUNT_BG_GC 0x00000001
44 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
45 #define F2FS_MOUNT_DISCARD 0x00000004
46 #define F2FS_MOUNT_NOHEAP 0x00000008
47 #define F2FS_MOUNT_XATTR_USER 0x00000010
48 #define F2FS_MOUNT_POSIX_ACL 0x00000020
49 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
50 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
51 #define F2FS_MOUNT_INLINE_DATA 0x00000100
52 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
53 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
54 #define F2FS_MOUNT_NOBARRIER 0x00000800
55 #define F2FS_MOUNT_FASTBOOT 0x00001000
56 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
57 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
58 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
60 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
61 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
62 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
64 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
65 typecheck(unsigned long long, b) && \
66 ((long long)((a) - (b)) > 0))
68 typedef u32 block_t
; /*
69 * should not change u32, since it is the on-disk block
70 * address format, __le32.
74 struct f2fs_mount_info
{
78 #define F2FS_FEATURE_ENCRYPT 0x0001
80 #define F2FS_HAS_FEATURE(sb, mask) \
81 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
82 #define F2FS_SET_FEATURE(sb, mask) \
83 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
84 #define F2FS_CLEAR_FEATURE(sb, mask) \
85 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
87 #define CRCPOLY_LE 0xedb88320
89 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
91 unsigned char *p
= (unsigned char *)buf
;
92 __u32 crc
= F2FS_SUPER_MAGIC
;
97 for (i
= 0; i
< 8; i
++)
98 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
103 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
105 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
109 * For checkpoint manager
124 #define DEF_BATCHED_TRIM_SECTIONS 32
125 #define BATCHED_TRIM_SEGMENTS(sbi) \
126 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
127 #define BATCHED_TRIM_BLOCKS(sbi) \
128 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
129 #define DEF_CP_INTERVAL 60 /* 60 secs */
130 #define DEF_IDLE_INTERVAL 120 /* 2 mins */
141 * For CP/NAT/SIT/SSA readahead
151 /* for the list of ino */
153 ORPHAN_INO
, /* for orphan ino list */
154 APPEND_INO
, /* for append ino list */
155 UPDATE_INO
, /* for update ino list */
156 MAX_INO_ENTRY
, /* max. list */
160 struct list_head list
; /* list head */
161 nid_t ino
; /* inode number */
164 /* for the list of inodes to be GCed */
166 struct list_head list
; /* list head */
167 struct inode
*inode
; /* vfs inode pointer */
170 /* for the list of blockaddresses to be discarded */
171 struct discard_entry
{
172 struct list_head list
; /* list head */
173 block_t blkaddr
; /* block address to be discarded */
174 int len
; /* # of consecutive blocks of the discard */
177 /* for the list of fsync inodes, used only during recovery */
178 struct fsync_inode_entry
{
179 struct list_head list
; /* list head */
180 struct inode
*inode
; /* vfs inode pointer */
181 block_t blkaddr
; /* block address locating the last fsync */
182 block_t last_dentry
; /* block address locating the last dentry */
183 block_t last_inode
; /* block address locating the last inode */
186 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
187 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
189 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
190 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
191 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
192 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
194 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
195 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
197 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
199 int before
= nats_in_cursum(rs
);
200 rs
->n_nats
= cpu_to_le16(before
+ i
);
204 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
206 int before
= sits_in_cursum(rs
);
207 rs
->n_sits
= cpu_to_le16(before
+ i
);
211 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
214 if (type
== NAT_JOURNAL
)
215 return size
<= MAX_NAT_JENTRIES(sum
);
216 return size
<= MAX_SIT_JENTRIES(sum
);
222 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
223 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
224 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
226 #define F2FS_IOCTL_MAGIC 0xf5
227 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
228 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
229 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
230 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
231 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
232 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
233 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
234 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
236 #define F2FS_IOC_SET_ENCRYPTION_POLICY \
237 _IOR('f', 19, struct f2fs_encryption_policy)
238 #define F2FS_IOC_GET_ENCRYPTION_PWSALT \
239 _IOW('f', 20, __u8[16])
240 #define F2FS_IOC_GET_ENCRYPTION_POLICY \
241 _IOW('f', 21, struct f2fs_encryption_policy)
244 * should be same as XFS_IOC_GOINGDOWN.
245 * Flags for going down operation used by FS_IOC_GOINGDOWN
247 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
248 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
249 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
250 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
251 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
253 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
255 * ioctl commands in 32 bit emulation
257 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
258 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
259 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
262 struct f2fs_defragment
{
268 * For INODE and NODE manager
270 /* for directory operations */
276 struct f2fs_filename
{
277 const struct qstr
*usr_fname
;
278 struct f2fs_str disk_name
;
280 #ifdef CONFIG_F2FS_FS_ENCRYPTION
281 struct f2fs_str crypto_buf
;
285 #define FSTR_INIT(n, l) { .name = n, .len = l }
286 #define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
287 #define fname_name(p) ((p)->disk_name.name)
288 #define fname_len(p) ((p)->disk_name.len)
290 struct f2fs_dentry_ptr
{
293 struct f2fs_dir_entry
*dentry
;
294 __u8 (*filename
)[F2FS_SLOT_LEN
];
298 static inline void make_dentry_ptr(struct inode
*inode
,
299 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
304 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
305 d
->max
= NR_DENTRY_IN_BLOCK
;
306 d
->bitmap
= &t
->dentry_bitmap
;
307 d
->dentry
= t
->dentry
;
308 d
->filename
= t
->filename
;
310 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
311 d
->max
= NR_INLINE_DENTRY
;
312 d
->bitmap
= &t
->dentry_bitmap
;
313 d
->dentry
= t
->dentry
;
314 d
->filename
= t
->filename
;
319 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
320 * as its node offset to distinguish from index node blocks.
321 * But some bits are used to mark the node block.
323 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
326 ALLOC_NODE
, /* allocate a new node page if needed */
327 LOOKUP_NODE
, /* look up a node without readahead */
329 * look up a node with readahead called
334 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
336 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
338 /* vector size for gang look-up from extent cache that consists of radix tree */
339 #define EXT_TREE_VEC_SIZE 64
341 /* for in-memory extent cache entry */
342 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
344 /* number of extent info in extent cache we try to shrink */
345 #define EXTENT_CACHE_SHRINK_NUMBER 128
348 unsigned int fofs
; /* start offset in a file */
349 u32 blk
; /* start block address of the extent */
350 unsigned int len
; /* length of the extent */
354 struct rb_node rb_node
; /* rb node located in rb-tree */
355 struct list_head list
; /* node in global extent list of sbi */
356 struct extent_info ei
; /* extent info */
357 struct extent_tree
*et
; /* extent tree pointer */
361 nid_t ino
; /* inode number */
362 struct rb_root root
; /* root of extent info rb-tree */
363 struct extent_node
*cached_en
; /* recently accessed extent node */
364 struct extent_info largest
; /* largested extent info */
365 struct list_head list
; /* to be used by sbi->zombie_list */
366 rwlock_t lock
; /* protect extent info rb-tree */
367 atomic_t node_cnt
; /* # of extent node in rb-tree*/
371 * This structure is taken from ext4_map_blocks.
373 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
375 #define F2FS_MAP_NEW (1 << BH_New)
376 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
377 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
378 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
381 struct f2fs_map_blocks
{
385 unsigned int m_flags
;
386 pgoff_t
*m_next_pgofs
; /* point next possible non-hole pgofs */
389 /* for flag in get_data_block */
390 #define F2FS_GET_BLOCK_READ 0
391 #define F2FS_GET_BLOCK_DIO 1
392 #define F2FS_GET_BLOCK_FIEMAP 2
393 #define F2FS_GET_BLOCK_BMAP 3
394 #define F2FS_GET_BLOCK_PRE_DIO 4
395 #define F2FS_GET_BLOCK_PRE_AIO 5
398 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
400 #define FADVISE_COLD_BIT 0x01
401 #define FADVISE_LOST_PINO_BIT 0x02
402 #define FADVISE_ENCRYPT_BIT 0x04
403 #define FADVISE_ENC_NAME_BIT 0x08
405 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
406 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
407 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
408 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
409 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
410 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
411 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
412 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
413 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
414 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
415 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
417 /* Encryption algorithms */
418 #define F2FS_ENCRYPTION_MODE_INVALID 0
419 #define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
420 #define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
421 #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
422 #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
424 #include "f2fs_crypto.h"
426 #define DEF_DIR_LEVEL 0
428 struct f2fs_inode_info
{
429 struct inode vfs_inode
; /* serve a vfs inode */
430 unsigned long i_flags
; /* keep an inode flags for ioctl */
431 unsigned char i_advise
; /* use to give file attribute hints */
432 unsigned char i_dir_level
; /* use for dentry level for large dir */
433 unsigned int i_current_depth
; /* use only in directory structure */
434 unsigned int i_pino
; /* parent inode number */
435 umode_t i_acl_mode
; /* keep file acl mode temporarily */
437 /* Use below internally in f2fs*/
438 unsigned long flags
; /* use to pass per-file flags */
439 struct rw_semaphore i_sem
; /* protect fi info */
440 atomic_t dirty_pages
; /* # of dirty pages */
441 f2fs_hash_t chash
; /* hash value of given file name */
442 unsigned int clevel
; /* maximum level of given file name */
443 nid_t i_xattr_nid
; /* node id that contains xattrs */
444 unsigned long long xattr_ver
; /* cp version of xattr modification */
446 struct list_head dirty_list
; /* linked in global dirty list */
447 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
448 struct mutex inmem_lock
; /* lock for inmemory pages */
450 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
452 #ifdef CONFIG_F2FS_FS_ENCRYPTION
453 /* Encryption params */
454 struct f2fs_crypt_info
*i_crypt_info
;
458 static inline void get_extent_info(struct extent_info
*ext
,
459 struct f2fs_extent i_ext
)
461 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
462 ext
->blk
= le32_to_cpu(i_ext
.blk
);
463 ext
->len
= le32_to_cpu(i_ext
.len
);
466 static inline void set_raw_extent(struct extent_info
*ext
,
467 struct f2fs_extent
*i_ext
)
469 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
470 i_ext
->blk
= cpu_to_le32(ext
->blk
);
471 i_ext
->len
= cpu_to_le32(ext
->len
);
474 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
475 u32 blk
, unsigned int len
)
482 static inline bool __is_extent_same(struct extent_info
*ei1
,
483 struct extent_info
*ei2
)
485 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
486 ei1
->len
== ei2
->len
);
489 static inline bool __is_extent_mergeable(struct extent_info
*back
,
490 struct extent_info
*front
)
492 return (back
->fofs
+ back
->len
== front
->fofs
&&
493 back
->blk
+ back
->len
== front
->blk
);
496 static inline bool __is_back_mergeable(struct extent_info
*cur
,
497 struct extent_info
*back
)
499 return __is_extent_mergeable(back
, cur
);
502 static inline bool __is_front_mergeable(struct extent_info
*cur
,
503 struct extent_info
*front
)
505 return __is_extent_mergeable(cur
, front
);
508 static inline void __try_update_largest_extent(struct extent_tree
*et
,
509 struct extent_node
*en
)
511 if (en
->ei
.len
> et
->largest
.len
)
512 et
->largest
= en
->ei
;
515 struct f2fs_nm_info
{
516 block_t nat_blkaddr
; /* base disk address of NAT */
517 nid_t max_nid
; /* maximum possible node ids */
518 nid_t available_nids
; /* maximum available node ids */
519 nid_t next_scan_nid
; /* the next nid to be scanned */
520 unsigned int ram_thresh
; /* control the memory footprint */
521 unsigned int ra_nid_pages
; /* # of nid pages to be readaheaded */
522 unsigned int dirty_nats_ratio
; /* control dirty nats ratio threshold */
524 /* NAT cache management */
525 struct radix_tree_root nat_root
;/* root of the nat entry cache */
526 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
527 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
528 struct list_head nat_entries
; /* cached nat entry list (clean) */
529 unsigned int nat_cnt
; /* the # of cached nat entries */
530 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
532 /* free node ids management */
533 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
534 struct list_head free_nid_list
; /* a list for free nids */
535 spinlock_t free_nid_list_lock
; /* protect free nid list */
536 unsigned int fcnt
; /* the number of free node id */
537 struct mutex build_lock
; /* lock for build free nids */
540 char *nat_bitmap
; /* NAT bitmap pointer */
541 int bitmap_size
; /* bitmap size */
545 * this structure is used as one of function parameters.
546 * all the information are dedicated to a given direct node block determined
547 * by the data offset in a file.
549 struct dnode_of_data
{
550 struct inode
*inode
; /* vfs inode pointer */
551 struct page
*inode_page
; /* its inode page, NULL is possible */
552 struct page
*node_page
; /* cached direct node page */
553 nid_t nid
; /* node id of the direct node block */
554 unsigned int ofs_in_node
; /* data offset in the node page */
555 bool inode_page_locked
; /* inode page is locked or not */
556 bool node_changed
; /* is node block changed */
557 char cur_level
; /* level of hole node page */
558 char max_level
; /* level of current page located */
559 block_t data_blkaddr
; /* block address of the node block */
562 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
563 struct page
*ipage
, struct page
*npage
, nid_t nid
)
565 memset(dn
, 0, sizeof(*dn
));
567 dn
->inode_page
= ipage
;
568 dn
->node_page
= npage
;
575 * By default, there are 6 active log areas across the whole main area.
576 * When considering hot and cold data separation to reduce cleaning overhead,
577 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
579 * In the current design, you should not change the numbers intentionally.
580 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
581 * logs individually according to the underlying devices. (default: 6)
582 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
583 * data and 8 for node logs.
585 #define NR_CURSEG_DATA_TYPE (3)
586 #define NR_CURSEG_NODE_TYPE (3)
587 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
590 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
591 CURSEG_WARM_DATA
, /* data blocks */
592 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
593 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
594 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
595 CURSEG_COLD_NODE
, /* indirect node blocks */
597 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
601 struct completion wait
;
602 struct llist_node llnode
;
606 struct flush_cmd_control
{
607 struct task_struct
*f2fs_issue_flush
; /* flush thread */
608 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
609 struct llist_head issue_list
; /* list for command issue */
610 struct llist_node
*dispatch_list
; /* list for command dispatch */
613 struct f2fs_sm_info
{
614 struct sit_info
*sit_info
; /* whole segment information */
615 struct free_segmap_info
*free_info
; /* free segment information */
616 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
617 struct curseg_info
*curseg_array
; /* active segment information */
619 block_t seg0_blkaddr
; /* block address of 0'th segment */
620 block_t main_blkaddr
; /* start block address of main area */
621 block_t ssa_blkaddr
; /* start block address of SSA area */
623 unsigned int segment_count
; /* total # of segments */
624 unsigned int main_segments
; /* # of segments in main area */
625 unsigned int reserved_segments
; /* # of reserved segments */
626 unsigned int ovp_segments
; /* # of overprovision segments */
628 /* a threshold to reclaim prefree segments */
629 unsigned int rec_prefree_segments
;
631 /* for small discard management */
632 struct list_head discard_list
; /* 4KB discard list */
633 int nr_discards
; /* # of discards in the list */
634 int max_discards
; /* max. discards to be issued */
636 /* for batched trimming */
637 unsigned int trim_sections
; /* # of sections to trim */
639 struct list_head sit_entry_set
; /* sit entry set list */
641 unsigned int ipu_policy
; /* in-place-update policy */
642 unsigned int min_ipu_util
; /* in-place-update threshold */
643 unsigned int min_fsync_blocks
; /* threshold for fsync */
645 /* for flush command control */
646 struct flush_cmd_control
*cmd_control_info
;
654 * COUNT_TYPE for monitoring
656 * f2fs monitors the number of several block types such as on-writeback,
657 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
670 * The below are the page types of bios used in submit_bio().
671 * The available types are:
672 * DATA User data pages. It operates as async mode.
673 * NODE Node pages. It operates as async mode.
674 * META FS metadata pages such as SIT, NAT, CP.
675 * NR_PAGE_TYPE The number of page types.
676 * META_FLUSH Make sure the previous pages are written
677 * with waiting the bio's completion
678 * ... Only can be used with META.
680 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
687 INMEM
, /* the below types are used by tracepoints only. */
693 struct f2fs_io_info
{
694 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
695 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
696 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
697 block_t blk_addr
; /* block address to be written */
698 struct page
*page
; /* page to be written */
699 struct page
*encrypted_page
; /* encrypted page */
702 #define is_read_io(rw) (((rw) & 1) == READ)
703 struct f2fs_bio_info
{
704 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
705 struct bio
*bio
; /* bios to merge */
706 sector_t last_block_in_bio
; /* last block number */
707 struct f2fs_io_info fio
; /* store buffered io info. */
708 struct rw_semaphore io_rwsem
; /* blocking op for bio */
712 DIR_INODE
, /* for dirty dir inode */
713 FILE_INODE
, /* for dirty regular/symlink inode */
717 /* for inner inode cache management */
718 struct inode_management
{
719 struct radix_tree_root ino_root
; /* ino entry array */
720 spinlock_t ino_lock
; /* for ino entry lock */
721 struct list_head ino_list
; /* inode list head */
722 unsigned long ino_num
; /* number of entries */
725 /* For s_flag in struct f2fs_sb_info */
727 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
728 SBI_IS_CLOSE
, /* specify unmounting */
729 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
730 SBI_POR_DOING
, /* recovery is doing or not */
739 struct f2fs_sb_info
{
740 struct super_block
*sb
; /* pointer to VFS super block */
741 struct proc_dir_entry
*s_proc
; /* proc entry */
742 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
743 int valid_super_block
; /* valid super block no */
744 int s_flag
; /* flags for sbi */
746 /* for node-related operations */
747 struct f2fs_nm_info
*nm_info
; /* node manager */
748 struct inode
*node_inode
; /* cache node blocks */
750 /* for segment-related operations */
751 struct f2fs_sm_info
*sm_info
; /* segment manager */
753 /* for bio operations */
754 struct f2fs_bio_info read_io
; /* for read bios */
755 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
758 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
759 struct inode
*meta_inode
; /* cache meta blocks */
760 struct mutex cp_mutex
; /* checkpoint procedure lock */
761 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
762 struct rw_semaphore node_write
; /* locking node writes */
763 struct mutex writepages
; /* mutex for writepages() */
764 wait_queue_head_t cp_wait
;
765 unsigned long last_time
[MAX_TIME
]; /* to store time in jiffies */
766 long interval_time
[MAX_TIME
]; /* to store thresholds */
768 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
770 /* for orphan inode, use 0'th array */
771 unsigned int max_orphans
; /* max orphan inodes */
773 /* for inode management */
774 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
775 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
777 /* for extent tree cache */
778 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
779 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
780 struct list_head extent_list
; /* lru list for shrinker */
781 spinlock_t extent_lock
; /* locking extent lru list */
782 atomic_t total_ext_tree
; /* extent tree count */
783 struct list_head zombie_list
; /* extent zombie tree list */
784 atomic_t total_zombie_tree
; /* extent zombie tree count */
785 atomic_t total_ext_node
; /* extent info count */
787 /* basic filesystem units */
788 unsigned int log_sectors_per_block
; /* log2 sectors per block */
789 unsigned int log_blocksize
; /* log2 block size */
790 unsigned int blocksize
; /* block size */
791 unsigned int root_ino_num
; /* root inode number*/
792 unsigned int node_ino_num
; /* node inode number*/
793 unsigned int meta_ino_num
; /* meta inode number*/
794 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
795 unsigned int blocks_per_seg
; /* blocks per segment */
796 unsigned int segs_per_sec
; /* segments per section */
797 unsigned int secs_per_zone
; /* sections per zone */
798 unsigned int total_sections
; /* total section count */
799 unsigned int total_node_count
; /* total node block count */
800 unsigned int total_valid_node_count
; /* valid node block count */
801 unsigned int total_valid_inode_count
; /* valid inode count */
802 loff_t max_file_blocks
; /* max block index of file */
803 int active_logs
; /* # of active logs */
804 int dir_level
; /* directory level */
806 block_t user_block_count
; /* # of user blocks */
807 block_t total_valid_block_count
; /* # of valid blocks */
808 block_t alloc_valid_block_count
; /* # of allocated blocks */
809 block_t discard_blks
; /* discard command candidats */
810 block_t last_valid_block_count
; /* for recovery */
811 u32 s_next_generation
; /* for NFS support */
812 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
814 struct f2fs_mount_info mount_opt
; /* mount options */
816 /* for cleaning operations */
817 struct mutex gc_mutex
; /* mutex for GC */
818 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
819 unsigned int cur_victim_sec
; /* current victim section num */
821 /* maximum # of trials to find a victim segment for SSR and GC */
822 unsigned int max_victim_search
;
825 * for stat information.
826 * one is for the LFS mode, and the other is for the SSR mode.
828 #ifdef CONFIG_F2FS_STAT_FS
829 struct f2fs_stat_info
*stat_info
; /* FS status information */
830 unsigned int segment_count
[2]; /* # of allocated segments */
831 unsigned int block_count
[2]; /* # of allocated blocks */
832 atomic_t inplace_count
; /* # of inplace update */
833 atomic64_t total_hit_ext
; /* # of lookup extent cache */
834 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
835 atomic64_t read_hit_largest
; /* # of hit largest extent node */
836 atomic64_t read_hit_cached
; /* # of hit cached extent node */
837 atomic_t inline_xattr
; /* # of inline_xattr inodes */
838 atomic_t inline_inode
; /* # of inline_data inodes */
839 atomic_t inline_dir
; /* # of inline_dentry inodes */
840 int bg_gc
; /* background gc calls */
841 unsigned int ndirty_inode
[NR_INODE_TYPE
]; /* # of dirty inodes */
843 unsigned int last_victim
[2]; /* last victim segment # */
844 spinlock_t stat_lock
; /* lock for stat operations */
846 /* For sysfs suppport */
847 struct kobject s_kobj
;
848 struct completion s_kobj_unregister
;
850 /* For shrinker support */
851 struct list_head s_list
;
852 struct mutex umount_mutex
;
853 unsigned int shrinker_run_no
;
855 /* For write statistics */
856 u64 sectors_written_start
;
860 /* For write statistics. Suppose sector size is 512 bytes,
861 * and the return value is in kbytes. s is of struct f2fs_sb_info.
863 #define BD_PART_WRITTEN(s) \
864 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
865 s->sectors_written_start) >> 1)
867 static inline void f2fs_update_time(struct f2fs_sb_info
*sbi
, int type
)
869 sbi
->last_time
[type
] = jiffies
;
872 static inline bool f2fs_time_over(struct f2fs_sb_info
*sbi
, int type
)
874 struct timespec ts
= {sbi
->interval_time
[type
], 0};
875 unsigned long interval
= timespec_to_jiffies(&ts
);
877 return time_after(jiffies
, sbi
->last_time
[type
] + interval
);
880 static inline bool is_idle(struct f2fs_sb_info
*sbi
)
882 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
883 struct request_queue
*q
= bdev_get_queue(bdev
);
884 struct request_list
*rl
= &q
->root_rl
;
886 if (rl
->count
[BLK_RW_SYNC
] || rl
->count
[BLK_RW_ASYNC
])
889 return f2fs_time_over(sbi
, REQ_TIME
);
895 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
897 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
900 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
902 return sb
->s_fs_info
;
905 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
907 return F2FS_SB(inode
->i_sb
);
910 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
912 return F2FS_I_SB(mapping
->host
);
915 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
917 return F2FS_M_SB(page
->mapping
);
920 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
922 return (struct f2fs_super_block
*)(sbi
->raw_super
);
925 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
927 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
930 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
932 return (struct f2fs_node
*)page_address(page
);
935 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
937 return &((struct f2fs_node
*)page_address(page
))->i
;
940 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
942 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
945 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
947 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
950 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
952 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
955 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
957 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
960 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
962 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
965 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
967 return sbi
->meta_inode
->i_mapping
;
970 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
972 return sbi
->node_inode
->i_mapping
;
975 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
977 return sbi
->s_flag
& (0x01 << type
);
980 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
982 sbi
->s_flag
|= (0x01 << type
);
985 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
987 sbi
->s_flag
&= ~(0x01 << type
);
990 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
992 return le64_to_cpu(cp
->checkpoint_ver
);
995 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
997 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
998 return ckpt_flags
& f
;
1001 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1003 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1005 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1008 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1010 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1012 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1015 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
1017 down_read(&sbi
->cp_rwsem
);
1020 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
1022 up_read(&sbi
->cp_rwsem
);
1025 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
1027 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
1030 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
1032 up_write(&sbi
->cp_rwsem
);
1035 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
1037 int reason
= CP_SYNC
;
1039 if (test_opt(sbi
, FASTBOOT
))
1040 reason
= CP_FASTBOOT
;
1041 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
1046 static inline bool __remain_node_summaries(int reason
)
1048 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
1051 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
1053 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
1054 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1058 * Check whether the given nid is within node id range.
1060 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1062 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1064 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1069 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1072 * Check whether the inode has blocks or not
1074 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1076 if (F2FS_I(inode
)->i_xattr_nid
)
1077 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1079 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1082 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1084 return ofs
== XATTR_NODE_OFFSET
;
1087 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1088 struct inode
*inode
, blkcnt_t count
)
1090 block_t valid_block_count
;
1092 spin_lock(&sbi
->stat_lock
);
1094 sbi
->total_valid_block_count
+ (block_t
)count
;
1095 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1096 spin_unlock(&sbi
->stat_lock
);
1099 inode
->i_blocks
+= count
;
1100 sbi
->total_valid_block_count
= valid_block_count
;
1101 sbi
->alloc_valid_block_count
+= (block_t
)count
;
1102 spin_unlock(&sbi
->stat_lock
);
1106 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1107 struct inode
*inode
,
1110 spin_lock(&sbi
->stat_lock
);
1111 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1112 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1113 inode
->i_blocks
-= count
;
1114 sbi
->total_valid_block_count
-= (block_t
)count
;
1115 spin_unlock(&sbi
->stat_lock
);
1118 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1120 atomic_inc(&sbi
->nr_pages
[count_type
]);
1121 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1124 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1126 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
1127 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1128 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1131 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1133 atomic_dec(&sbi
->nr_pages
[count_type
]);
1136 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1138 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1139 !S_ISLNK(inode
->i_mode
))
1142 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
1143 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1144 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1147 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1149 return atomic_read(&sbi
->nr_pages
[count_type
]);
1152 static inline int get_dirty_pages(struct inode
*inode
)
1154 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
1157 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1159 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1160 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
1161 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
1164 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1166 return sbi
->total_valid_block_count
;
1169 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1171 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1173 /* return NAT or SIT bitmap */
1174 if (flag
== NAT_BITMAP
)
1175 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1176 else if (flag
== SIT_BITMAP
)
1177 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1182 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1184 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1187 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1189 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1192 if (__cp_payload(sbi
) > 0) {
1193 if (flag
== NAT_BITMAP
)
1194 return &ckpt
->sit_nat_version_bitmap
;
1196 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1198 offset
= (flag
== NAT_BITMAP
) ?
1199 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1200 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1204 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1207 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1208 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1210 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1213 * odd numbered checkpoint should at cp segment 0
1214 * and even segment must be at cp segment 1
1216 if (!(ckpt_version
& 1))
1217 start_addr
+= sbi
->blocks_per_seg
;
1222 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1224 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1227 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1228 struct inode
*inode
)
1230 block_t valid_block_count
;
1231 unsigned int valid_node_count
;
1233 spin_lock(&sbi
->stat_lock
);
1235 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1236 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1237 spin_unlock(&sbi
->stat_lock
);
1241 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1242 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1243 spin_unlock(&sbi
->stat_lock
);
1250 sbi
->alloc_valid_block_count
++;
1251 sbi
->total_valid_node_count
++;
1252 sbi
->total_valid_block_count
++;
1253 spin_unlock(&sbi
->stat_lock
);
1258 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1259 struct inode
*inode
)
1261 spin_lock(&sbi
->stat_lock
);
1263 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1264 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1265 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1268 sbi
->total_valid_node_count
--;
1269 sbi
->total_valid_block_count
--;
1271 spin_unlock(&sbi
->stat_lock
);
1274 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1276 return sbi
->total_valid_node_count
;
1279 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1281 spin_lock(&sbi
->stat_lock
);
1282 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1283 sbi
->total_valid_inode_count
++;
1284 spin_unlock(&sbi
->stat_lock
);
1287 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1289 spin_lock(&sbi
->stat_lock
);
1290 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1291 sbi
->total_valid_inode_count
--;
1292 spin_unlock(&sbi
->stat_lock
);
1295 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1297 return sbi
->total_valid_inode_count
;
1300 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1301 pgoff_t index
, bool for_write
)
1304 return grab_cache_page(mapping
, index
);
1305 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1308 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1310 char *src_kaddr
= kmap(src
);
1311 char *dst_kaddr
= kmap(dst
);
1313 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1318 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1324 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1327 page_cache_release(page
);
1330 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1333 f2fs_put_page(dn
->node_page
, 1);
1334 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1335 f2fs_put_page(dn
->inode_page
, 0);
1336 dn
->node_page
= NULL
;
1337 dn
->inode_page
= NULL
;
1340 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1343 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1346 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1351 entry
= kmem_cache_alloc(cachep
, flags
);
1353 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1357 static inline struct bio
*f2fs_bio_alloc(int npages
)
1361 /* No failure on bio allocation */
1362 bio
= bio_alloc(GFP_NOIO
, npages
);
1364 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1368 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1369 unsigned long index
, void *item
)
1371 while (radix_tree_insert(root
, index
, item
))
1375 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1377 static inline bool IS_INODE(struct page
*page
)
1379 struct f2fs_node
*p
= F2FS_NODE(page
);
1380 return RAW_IS_INODE(p
);
1383 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1385 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1388 static inline block_t
datablock_addr(struct page
*node_page
,
1389 unsigned int offset
)
1391 struct f2fs_node
*raw_node
;
1393 raw_node
= F2FS_NODE(node_page
);
1394 addr_array
= blkaddr_in_node(raw_node
);
1395 return le32_to_cpu(addr_array
[offset
]);
1398 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1403 mask
= 1 << (7 - (nr
& 0x07));
1404 return mask
& *addr
;
1407 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1412 mask
= 1 << (7 - (nr
& 0x07));
1416 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1421 mask
= 1 << (7 - (nr
& 0x07));
1425 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1431 mask
= 1 << (7 - (nr
& 0x07));
1437 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1443 mask
= 1 << (7 - (nr
& 0x07));
1449 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1454 mask
= 1 << (7 - (nr
& 0x07));
1458 /* used for f2fs_inode_info->flags */
1460 FI_NEW_INODE
, /* indicate newly allocated inode */
1461 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1462 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1463 FI_INC_LINK
, /* need to increment i_nlink */
1464 FI_ACL_MODE
, /* indicate acl mode */
1465 FI_NO_ALLOC
, /* should not allocate any blocks */
1466 FI_FREE_NID
, /* free allocated nide */
1467 FI_UPDATE_DIR
, /* should update inode block for consistency */
1468 FI_DELAY_IPUT
, /* used for the recovery */
1469 FI_NO_EXTENT
, /* not to use the extent cache */
1470 FI_INLINE_XATTR
, /* used for inline xattr */
1471 FI_INLINE_DATA
, /* used for inline data*/
1472 FI_INLINE_DENTRY
, /* used for inline dentry */
1473 FI_APPEND_WRITE
, /* inode has appended data */
1474 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1475 FI_NEED_IPU
, /* used for ipu per file */
1476 FI_ATOMIC_FILE
, /* indicate atomic file */
1477 FI_VOLATILE_FILE
, /* indicate volatile file */
1478 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1479 FI_DROP_CACHE
, /* drop dirty page cache */
1480 FI_DATA_EXIST
, /* indicate data exists */
1481 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1482 FI_DO_DEFRAG
, /* indicate defragment is running */
1483 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1486 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1488 if (!test_bit(flag
, &fi
->flags
))
1489 set_bit(flag
, &fi
->flags
);
1492 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1494 return test_bit(flag
, &fi
->flags
);
1497 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1499 if (test_bit(flag
, &fi
->flags
))
1500 clear_bit(flag
, &fi
->flags
);
1503 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1505 fi
->i_acl_mode
= mode
;
1506 set_inode_flag(fi
, FI_ACL_MODE
);
1509 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1510 struct f2fs_inode
*ri
)
1512 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1513 set_inode_flag(fi
, FI_INLINE_XATTR
);
1514 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1515 set_inode_flag(fi
, FI_INLINE_DATA
);
1516 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1517 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1518 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1519 set_inode_flag(fi
, FI_DATA_EXIST
);
1520 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1521 set_inode_flag(fi
, FI_INLINE_DOTS
);
1524 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1525 struct f2fs_inode
*ri
)
1529 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1530 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1531 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1532 ri
->i_inline
|= F2FS_INLINE_DATA
;
1533 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1534 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1535 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1536 ri
->i_inline
|= F2FS_DATA_EXIST
;
1537 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1538 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1541 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1543 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1546 static inline unsigned int addrs_per_inode(struct inode
*inode
)
1548 if (f2fs_has_inline_xattr(inode
))
1549 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1550 return DEF_ADDRS_PER_INODE
;
1553 static inline void *inline_xattr_addr(struct page
*page
)
1555 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1556 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1557 F2FS_INLINE_XATTR_ADDRS
]);
1560 static inline int inline_xattr_size(struct inode
*inode
)
1562 if (f2fs_has_inline_xattr(inode
))
1563 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1568 static inline int f2fs_has_inline_data(struct inode
*inode
)
1570 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1573 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1575 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1576 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1579 static inline int f2fs_exist_data(struct inode
*inode
)
1581 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1584 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1586 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1589 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1591 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1594 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1596 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1599 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1601 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1604 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1606 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1609 static inline void *inline_data_addr(struct page
*page
)
1611 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1612 return (void *)&(ri
->i_addr
[1]);
1615 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1617 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1620 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1622 if (!f2fs_has_inline_dentry(dir
))
1626 static inline int is_file(struct inode
*inode
, int type
)
1628 return F2FS_I(inode
)->i_advise
& type
;
1631 static inline void set_file(struct inode
*inode
, int type
)
1633 F2FS_I(inode
)->i_advise
|= type
;
1636 static inline void clear_file(struct inode
*inode
, int type
)
1638 F2FS_I(inode
)->i_advise
&= ~type
;
1641 static inline int f2fs_readonly(struct super_block
*sb
)
1643 return sb
->s_flags
& MS_RDONLY
;
1646 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1648 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1651 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1653 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1654 sbi
->sb
->s_flags
|= MS_RDONLY
;
1657 static inline bool is_dot_dotdot(const struct qstr
*str
)
1659 if (str
->len
== 1 && str
->name
[0] == '.')
1662 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1668 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1670 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1671 is_inode_flag_set(F2FS_I(inode
), FI_NO_EXTENT
))
1674 return S_ISREG(inode
->i_mode
);
1677 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1681 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1683 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1687 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1691 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1693 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1697 #define get_inode_mode(i) \
1698 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1699 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1701 /* get offset of first page in next direct node */
1702 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1703 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1704 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1705 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1710 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1711 void truncate_data_blocks(struct dnode_of_data
*);
1712 int truncate_blocks(struct inode
*, u64
, bool);
1713 int f2fs_truncate(struct inode
*, bool);
1714 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1715 int f2fs_setattr(struct dentry
*, struct iattr
*);
1716 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1717 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1718 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1719 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1724 void f2fs_set_inode_flags(struct inode
*);
1725 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1726 int try_to_free_nats(struct f2fs_sb_info
*, int);
1727 int update_inode(struct inode
*, struct page
*);
1728 int update_inode_page(struct inode
*);
1729 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1730 void f2fs_evict_inode(struct inode
*);
1731 void handle_failed_inode(struct inode
*);
1736 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1741 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1742 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1744 struct f2fs_dir_entry
*find_target_dentry(struct f2fs_filename
*,
1745 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1746 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1747 unsigned int, struct f2fs_str
*);
1748 void do_make_empty_dir(struct inode
*, struct inode
*,
1749 struct f2fs_dentry_ptr
*);
1750 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1751 const struct qstr
*, struct page
*);
1752 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1753 int room_for_filename(const void *, int, int);
1754 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1755 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1757 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1758 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1759 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1760 struct page
*, struct inode
*);
1761 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1762 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1763 const struct qstr
*, f2fs_hash_t
, unsigned int);
1764 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1766 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1768 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1769 bool f2fs_empty_dir(struct inode
*);
1771 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1773 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1774 inode
, inode
->i_ino
, inode
->i_mode
);
1780 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1781 int f2fs_sync_fs(struct super_block
*, int);
1782 extern __printf(3, 4)
1783 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1788 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1793 struct dnode_of_data
;
1796 bool available_free_memory(struct f2fs_sb_info
*, int);
1797 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1798 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1799 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1800 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1801 pgoff_t
get_next_page_offset(struct dnode_of_data
*, pgoff_t
);
1802 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1803 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1804 int truncate_xattr_node(struct inode
*, struct page
*);
1805 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1806 int remove_inode_page(struct inode
*);
1807 struct page
*new_inode_page(struct inode
*);
1808 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1809 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1810 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1811 struct page
*get_node_page_ra(struct page
*, int);
1812 void sync_inode_page(struct dnode_of_data
*);
1813 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1814 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1815 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1816 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1817 int try_to_free_nids(struct f2fs_sb_info
*, int);
1818 void recover_inline_xattr(struct inode
*, struct page
*);
1819 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1820 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1821 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1822 struct f2fs_summary_block
*);
1823 void flush_nat_entries(struct f2fs_sb_info
*);
1824 int build_node_manager(struct f2fs_sb_info
*);
1825 void destroy_node_manager(struct f2fs_sb_info
*);
1826 int __init
create_node_manager_caches(void);
1827 void destroy_node_manager_caches(void);
1832 void register_inmem_page(struct inode
*, struct page
*);
1833 int commit_inmem_pages(struct inode
*, bool);
1834 void f2fs_balance_fs(struct f2fs_sb_info
*, bool);
1835 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1836 int f2fs_issue_flush(struct f2fs_sb_info
*);
1837 int create_flush_cmd_control(struct f2fs_sb_info
*);
1838 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1839 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1840 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
1841 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1842 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1843 void release_discard_addrs(struct f2fs_sb_info
*);
1844 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1845 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1846 void allocate_new_segments(struct f2fs_sb_info
*);
1847 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1848 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1849 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1850 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1851 void write_node_page(unsigned int, struct f2fs_io_info
*);
1852 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1853 void rewrite_data_page(struct f2fs_io_info
*);
1854 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
1855 block_t
, block_t
, unsigned char, bool);
1856 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1857 block_t
, block_t
*, struct f2fs_summary
*, int);
1858 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
, bool);
1859 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
1860 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1861 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1862 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1863 int, unsigned int, int);
1864 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1865 int build_segment_manager(struct f2fs_sb_info
*);
1866 void destroy_segment_manager(struct f2fs_sb_info
*);
1867 int __init
create_segment_manager_caches(void);
1868 void destroy_segment_manager_caches(void);
1873 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1874 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1875 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
1876 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
1877 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
1878 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1879 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1880 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1881 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1882 void release_ino_entry(struct f2fs_sb_info
*);
1883 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1884 int acquire_orphan_inode(struct f2fs_sb_info
*);
1885 void release_orphan_inode(struct f2fs_sb_info
*);
1886 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1887 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1888 int recover_orphan_inodes(struct f2fs_sb_info
*);
1889 int get_valid_checkpoint(struct f2fs_sb_info
*);
1890 void update_dirty_page(struct inode
*, struct page
*);
1891 void add_dirty_dir_inode(struct inode
*);
1892 void remove_dirty_inode(struct inode
*);
1893 int sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
1894 int write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1895 void init_ino_entry_info(struct f2fs_sb_info
*);
1896 int __init
create_checkpoint_caches(void);
1897 void destroy_checkpoint_caches(void);
1902 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1903 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info
*, struct inode
*,
1904 struct page
*, nid_t
, enum page_type
, int);
1905 int f2fs_submit_page_bio(struct f2fs_io_info
*);
1906 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
1907 void set_data_blkaddr(struct dnode_of_data
*);
1908 int reserve_new_block(struct dnode_of_data
*);
1909 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
1910 ssize_t
f2fs_preallocate_blocks(struct kiocb
*, struct iov_iter
*);
1911 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1912 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
1913 struct page
*find_data_page(struct inode
*, pgoff_t
);
1914 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
1915 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1916 int do_write_data_page(struct f2fs_io_info
*);
1917 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
1918 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1919 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1920 int f2fs_release_page(struct page
*, gfp_t
);
1925 int start_gc_thread(struct f2fs_sb_info
*);
1926 void stop_gc_thread(struct f2fs_sb_info
*);
1927 block_t
start_bidx_of_node(unsigned int, struct inode
*);
1928 int f2fs_gc(struct f2fs_sb_info
*, bool);
1929 void build_gc_manager(struct f2fs_sb_info
*);
1934 int recover_fsync_data(struct f2fs_sb_info
*);
1935 bool space_for_roll_forward(struct f2fs_sb_info
*);
1940 #ifdef CONFIG_F2FS_STAT_FS
1941 struct f2fs_stat_info
{
1942 struct list_head stat_list
;
1943 struct f2fs_sb_info
*sbi
;
1944 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1945 int main_area_segs
, main_area_sections
, main_area_zones
;
1946 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
1947 unsigned long long hit_total
, total_ext
;
1948 int ext_tree
, zombie_tree
, ext_node
;
1949 int ndirty_node
, ndirty_meta
;
1950 int ndirty_dent
, ndirty_dirs
, ndirty_data
, ndirty_files
;
1951 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1952 int total_count
, utilization
;
1953 int bg_gc
, inmem_pages
, wb_pages
;
1954 int inline_xattr
, inline_inode
, inline_dir
;
1955 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1956 unsigned int bimodal
, avg_vblocks
;
1957 int util_free
, util_valid
, util_invalid
;
1958 int rsvd_segs
, overp_segs
;
1959 int dirty_count
, node_pages
, meta_pages
;
1960 int prefree_count
, call_count
, cp_count
, bg_cp_count
;
1961 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1962 int bg_node_segs
, bg_data_segs
;
1963 int tot_blks
, data_blks
, node_blks
;
1964 int bg_data_blks
, bg_node_blks
;
1965 int curseg
[NR_CURSEG_TYPE
];
1966 int cursec
[NR_CURSEG_TYPE
];
1967 int curzone
[NR_CURSEG_TYPE
];
1969 unsigned int segment_count
[2];
1970 unsigned int block_count
[2];
1971 unsigned int inplace_count
;
1972 unsigned long long base_mem
, cache_mem
, page_mem
;
1975 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1977 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1980 #define stat_inc_cp_count(si) ((si)->cp_count++)
1981 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
1982 #define stat_inc_call_count(si) ((si)->call_count++)
1983 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1984 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
1985 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
1986 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1987 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1988 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1989 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
1990 #define stat_inc_inline_xattr(inode) \
1992 if (f2fs_has_inline_xattr(inode)) \
1993 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1995 #define stat_dec_inline_xattr(inode) \
1997 if (f2fs_has_inline_xattr(inode)) \
1998 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2000 #define stat_inc_inline_inode(inode) \
2002 if (f2fs_has_inline_data(inode)) \
2003 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2005 #define stat_dec_inline_inode(inode) \
2007 if (f2fs_has_inline_data(inode)) \
2008 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2010 #define stat_inc_inline_dir(inode) \
2012 if (f2fs_has_inline_dentry(inode)) \
2013 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2015 #define stat_dec_inline_dir(inode) \
2017 if (f2fs_has_inline_dentry(inode)) \
2018 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2020 #define stat_inc_seg_type(sbi, curseg) \
2021 ((sbi)->segment_count[(curseg)->alloc_type]++)
2022 #define stat_inc_block_count(sbi, curseg) \
2023 ((sbi)->block_count[(curseg)->alloc_type]++)
2024 #define stat_inc_inplace_blocks(sbi) \
2025 (atomic_inc(&(sbi)->inplace_count))
2026 #define stat_inc_seg_count(sbi, type, gc_type) \
2028 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2030 if (type == SUM_TYPE_DATA) { \
2032 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2035 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2039 #define stat_inc_tot_blk_count(si, blks) \
2040 (si->tot_blks += (blks))
2042 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2044 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2045 stat_inc_tot_blk_count(si, blks); \
2046 si->data_blks += (blks); \
2047 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2050 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2052 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2053 stat_inc_tot_blk_count(si, blks); \
2054 si->node_blks += (blks); \
2055 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2058 int f2fs_build_stats(struct f2fs_sb_info
*);
2059 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2060 int __init
f2fs_create_root_stats(void);
2061 void f2fs_destroy_root_stats(void);
2063 #define stat_inc_cp_count(si)
2064 #define stat_inc_bg_cp_count(si)
2065 #define stat_inc_call_count(si)
2066 #define stat_inc_bggc_count(si)
2067 #define stat_inc_dirty_inode(sbi, type)
2068 #define stat_dec_dirty_inode(sbi, type)
2069 #define stat_inc_total_hit(sb)
2070 #define stat_inc_rbtree_node_hit(sb)
2071 #define stat_inc_largest_node_hit(sbi)
2072 #define stat_inc_cached_node_hit(sbi)
2073 #define stat_inc_inline_xattr(inode)
2074 #define stat_dec_inline_xattr(inode)
2075 #define stat_inc_inline_inode(inode)
2076 #define stat_dec_inline_inode(inode)
2077 #define stat_inc_inline_dir(inode)
2078 #define stat_dec_inline_dir(inode)
2079 #define stat_inc_seg_type(sbi, curseg)
2080 #define stat_inc_block_count(sbi, curseg)
2081 #define stat_inc_inplace_blocks(sbi)
2082 #define stat_inc_seg_count(sbi, type, gc_type)
2083 #define stat_inc_tot_blk_count(si, blks)
2084 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2085 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2087 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2088 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2089 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2090 static inline void f2fs_destroy_root_stats(void) { }
2093 extern const struct file_operations f2fs_dir_operations
;
2094 extern const struct file_operations f2fs_file_operations
;
2095 extern const struct inode_operations f2fs_file_inode_operations
;
2096 extern const struct address_space_operations f2fs_dblock_aops
;
2097 extern const struct address_space_operations f2fs_node_aops
;
2098 extern const struct address_space_operations f2fs_meta_aops
;
2099 extern const struct inode_operations f2fs_dir_inode_operations
;
2100 extern const struct inode_operations f2fs_symlink_inode_operations
;
2101 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2102 extern const struct inode_operations f2fs_special_inode_operations
;
2103 extern struct kmem_cache
*inode_entry_slab
;
2108 bool f2fs_may_inline_data(struct inode
*);
2109 bool f2fs_may_inline_dentry(struct inode
*);
2110 void read_inline_data(struct page
*, struct page
*);
2111 bool truncate_inline_inode(struct page
*, u64
);
2112 int f2fs_read_inline_data(struct inode
*, struct page
*);
2113 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2114 int f2fs_convert_inline_inode(struct inode
*);
2115 int f2fs_write_inline_data(struct inode
*, struct page
*);
2116 bool recover_inline_data(struct inode
*, struct page
*);
2117 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2118 struct f2fs_filename
*, struct page
**);
2119 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
2120 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2121 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2123 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2124 struct inode
*, struct inode
*);
2125 bool f2fs_empty_inline_dir(struct inode
*);
2126 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2128 int f2fs_inline_data_fiemap(struct inode
*,
2129 struct fiemap_extent_info
*, __u64
, __u64
);
2134 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2135 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2136 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2137 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2142 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2143 bool f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2144 unsigned int f2fs_destroy_extent_node(struct inode
*);
2145 void f2fs_destroy_extent_tree(struct inode
*);
2146 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2147 void f2fs_update_extent_cache(struct dnode_of_data
*);
2148 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2149 pgoff_t
, block_t
, unsigned int);
2150 void init_extent_cache_info(struct f2fs_sb_info
*);
2151 int __init
create_extent_cache(void);
2152 void destroy_extent_cache(void);
2157 static inline int f2fs_encrypted_inode(struct inode
*inode
)
2159 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2160 return file_is_encrypt(inode
);
2166 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2168 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2169 file_set_encrypt(inode
);
2173 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2175 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2176 return unlikely(bio
->bi_private
!= NULL
);
2182 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2184 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2185 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2191 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2193 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2194 umode_t mode
= inode
->i_mode
;
2196 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2202 /* crypto_policy.c */
2203 int f2fs_is_child_context_consistent_with_parent(struct inode
*,
2205 int f2fs_inherit_context(struct inode
*, struct inode
*, struct page
*);
2206 int f2fs_process_policy(const struct f2fs_encryption_policy
*, struct inode
*);
2207 int f2fs_get_policy(struct inode
*, struct f2fs_encryption_policy
*);
2210 extern struct kmem_cache
*f2fs_crypt_info_cachep
;
2211 bool f2fs_valid_contents_enc_mode(uint32_t);
2212 uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2213 struct f2fs_crypto_ctx
*f2fs_get_crypto_ctx(struct inode
*);
2214 void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx
*);
2215 struct page
*f2fs_encrypt(struct inode
*, struct page
*);
2216 int f2fs_decrypt(struct f2fs_crypto_ctx
*, struct page
*);
2217 int f2fs_decrypt_one(struct inode
*, struct page
*);
2218 void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx
*, struct bio
*);
2221 void f2fs_free_encryption_info(struct inode
*, struct f2fs_crypt_info
*);
2222 int _f2fs_get_encryption_info(struct inode
*inode
);
2224 /* crypto_fname.c */
2225 bool f2fs_valid_filenames_enc_mode(uint32_t);
2226 u32
f2fs_fname_crypto_round_up(u32
, u32
);
2227 int f2fs_fname_crypto_alloc_buffer(struct inode
*, u32
, struct f2fs_str
*);
2228 int f2fs_fname_disk_to_usr(struct inode
*, f2fs_hash_t
*,
2229 const struct f2fs_str
*, struct f2fs_str
*);
2230 int f2fs_fname_usr_to_disk(struct inode
*, const struct qstr
*,
2233 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2234 void f2fs_restore_and_release_control_page(struct page
**);
2235 void f2fs_restore_control_page(struct page
*);
2237 int __init
f2fs_init_crypto(void);
2238 int f2fs_crypto_initialize(void);
2239 void f2fs_exit_crypto(void);
2241 int f2fs_has_encryption_key(struct inode
*);
2243 static inline int f2fs_get_encryption_info(struct inode
*inode
)
2245 struct f2fs_crypt_info
*ci
= F2FS_I(inode
)->i_crypt_info
;
2248 (ci
->ci_keyring_key
&&
2249 (ci
->ci_keyring_key
->flags
& ((1 << KEY_FLAG_INVALIDATED
) |
2250 (1 << KEY_FLAG_REVOKED
) |
2251 (1 << KEY_FLAG_DEAD
)))))
2252 return _f2fs_get_encryption_info(inode
);
2256 void f2fs_fname_crypto_free_buffer(struct f2fs_str
*);
2257 int f2fs_fname_setup_filename(struct inode
*, const struct qstr
*,
2258 int lookup
, struct f2fs_filename
*);
2259 void f2fs_fname_free_filename(struct f2fs_filename
*);
2261 static inline void f2fs_restore_and_release_control_page(struct page
**p
) { }
2262 static inline void f2fs_restore_control_page(struct page
*p
) { }
2264 static inline int __init
f2fs_init_crypto(void) { return 0; }
2265 static inline void f2fs_exit_crypto(void) { }
2267 static inline int f2fs_has_encryption_key(struct inode
*i
) { return 0; }
2268 static inline int f2fs_get_encryption_info(struct inode
*i
) { return 0; }
2269 static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str
*p
) { }
2271 static inline int f2fs_fname_setup_filename(struct inode
*dir
,
2272 const struct qstr
*iname
,
2273 int lookup
, struct f2fs_filename
*fname
)
2275 memset(fname
, 0, sizeof(struct f2fs_filename
));
2276 fname
->usr_fname
= iname
;
2277 fname
->disk_name
.name
= (unsigned char *)iname
->name
;
2278 fname
->disk_name
.len
= iname
->len
;
2282 static inline void f2fs_fname_free_filename(struct f2fs_filename
*fname
) { }