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
396 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
398 #define FADVISE_COLD_BIT 0x01
399 #define FADVISE_LOST_PINO_BIT 0x02
400 #define FADVISE_ENCRYPT_BIT 0x04
401 #define FADVISE_ENC_NAME_BIT 0x08
403 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
404 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
405 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
406 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
407 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
408 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
409 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
410 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
411 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
412 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
413 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
415 /* Encryption algorithms */
416 #define F2FS_ENCRYPTION_MODE_INVALID 0
417 #define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
418 #define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
419 #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
420 #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
422 #include "f2fs_crypto.h"
424 #define DEF_DIR_LEVEL 0
426 struct f2fs_inode_info
{
427 struct inode vfs_inode
; /* serve a vfs inode */
428 unsigned long i_flags
; /* keep an inode flags for ioctl */
429 unsigned char i_advise
; /* use to give file attribute hints */
430 unsigned char i_dir_level
; /* use for dentry level for large dir */
431 unsigned int i_current_depth
; /* use only in directory structure */
432 unsigned int i_pino
; /* parent inode number */
433 umode_t i_acl_mode
; /* keep file acl mode temporarily */
435 /* Use below internally in f2fs*/
436 unsigned long flags
; /* use to pass per-file flags */
437 struct rw_semaphore i_sem
; /* protect fi info */
438 atomic_t dirty_pages
; /* # of dirty pages */
439 f2fs_hash_t chash
; /* hash value of given file name */
440 unsigned int clevel
; /* maximum level of given file name */
441 nid_t i_xattr_nid
; /* node id that contains xattrs */
442 unsigned long long xattr_ver
; /* cp version of xattr modification */
444 struct list_head dirty_list
; /* linked in global dirty list */
445 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
446 struct mutex inmem_lock
; /* lock for inmemory pages */
448 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
450 #ifdef CONFIG_F2FS_FS_ENCRYPTION
451 /* Encryption params */
452 struct f2fs_crypt_info
*i_crypt_info
;
456 static inline void get_extent_info(struct extent_info
*ext
,
457 struct f2fs_extent i_ext
)
459 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
460 ext
->blk
= le32_to_cpu(i_ext
.blk
);
461 ext
->len
= le32_to_cpu(i_ext
.len
);
464 static inline void set_raw_extent(struct extent_info
*ext
,
465 struct f2fs_extent
*i_ext
)
467 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
468 i_ext
->blk
= cpu_to_le32(ext
->blk
);
469 i_ext
->len
= cpu_to_le32(ext
->len
);
472 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
473 u32 blk
, unsigned int len
)
480 static inline bool __is_extent_same(struct extent_info
*ei1
,
481 struct extent_info
*ei2
)
483 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
484 ei1
->len
== ei2
->len
);
487 static inline bool __is_extent_mergeable(struct extent_info
*back
,
488 struct extent_info
*front
)
490 return (back
->fofs
+ back
->len
== front
->fofs
&&
491 back
->blk
+ back
->len
== front
->blk
);
494 static inline bool __is_back_mergeable(struct extent_info
*cur
,
495 struct extent_info
*back
)
497 return __is_extent_mergeable(back
, cur
);
500 static inline bool __is_front_mergeable(struct extent_info
*cur
,
501 struct extent_info
*front
)
503 return __is_extent_mergeable(cur
, front
);
506 static inline void __try_update_largest_extent(struct extent_tree
*et
,
507 struct extent_node
*en
)
509 if (en
->ei
.len
> et
->largest
.len
)
510 et
->largest
= en
->ei
;
513 struct f2fs_nm_info
{
514 block_t nat_blkaddr
; /* base disk address of NAT */
515 nid_t max_nid
; /* maximum possible node ids */
516 nid_t available_nids
; /* maximum available node ids */
517 nid_t next_scan_nid
; /* the next nid to be scanned */
518 unsigned int ram_thresh
; /* control the memory footprint */
519 unsigned int ra_nid_pages
; /* # of nid pages to be readaheaded */
520 unsigned int dirty_nats_ratio
; /* control dirty nats ratio threshold */
522 /* NAT cache management */
523 struct radix_tree_root nat_root
;/* root of the nat entry cache */
524 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
525 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
526 struct list_head nat_entries
; /* cached nat entry list (clean) */
527 unsigned int nat_cnt
; /* the # of cached nat entries */
528 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
530 /* free node ids management */
531 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
532 struct list_head free_nid_list
; /* a list for free nids */
533 spinlock_t free_nid_list_lock
; /* protect free nid list */
534 unsigned int fcnt
; /* the number of free node id */
535 struct mutex build_lock
; /* lock for build free nids */
538 char *nat_bitmap
; /* NAT bitmap pointer */
539 int bitmap_size
; /* bitmap size */
543 * this structure is used as one of function parameters.
544 * all the information are dedicated to a given direct node block determined
545 * by the data offset in a file.
547 struct dnode_of_data
{
548 struct inode
*inode
; /* vfs inode pointer */
549 struct page
*inode_page
; /* its inode page, NULL is possible */
550 struct page
*node_page
; /* cached direct node page */
551 nid_t nid
; /* node id of the direct node block */
552 unsigned int ofs_in_node
; /* data offset in the node page */
553 bool inode_page_locked
; /* inode page is locked or not */
554 bool node_changed
; /* is node block changed */
555 char cur_level
; /* level of hole node page */
556 char max_level
; /* level of current page located */
557 block_t data_blkaddr
; /* block address of the node block */
560 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
561 struct page
*ipage
, struct page
*npage
, nid_t nid
)
563 memset(dn
, 0, sizeof(*dn
));
565 dn
->inode_page
= ipage
;
566 dn
->node_page
= npage
;
573 * By default, there are 6 active log areas across the whole main area.
574 * When considering hot and cold data separation to reduce cleaning overhead,
575 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
577 * In the current design, you should not change the numbers intentionally.
578 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
579 * logs individually according to the underlying devices. (default: 6)
580 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
581 * data and 8 for node logs.
583 #define NR_CURSEG_DATA_TYPE (3)
584 #define NR_CURSEG_NODE_TYPE (3)
585 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
588 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
589 CURSEG_WARM_DATA
, /* data blocks */
590 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
591 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
592 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
593 CURSEG_COLD_NODE
, /* indirect node blocks */
595 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
599 struct completion wait
;
600 struct llist_node llnode
;
604 struct flush_cmd_control
{
605 struct task_struct
*f2fs_issue_flush
; /* flush thread */
606 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
607 struct llist_head issue_list
; /* list for command issue */
608 struct llist_node
*dispatch_list
; /* list for command dispatch */
611 struct f2fs_sm_info
{
612 struct sit_info
*sit_info
; /* whole segment information */
613 struct free_segmap_info
*free_info
; /* free segment information */
614 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
615 struct curseg_info
*curseg_array
; /* active segment information */
617 block_t seg0_blkaddr
; /* block address of 0'th segment */
618 block_t main_blkaddr
; /* start block address of main area */
619 block_t ssa_blkaddr
; /* start block address of SSA area */
621 unsigned int segment_count
; /* total # of segments */
622 unsigned int main_segments
; /* # of segments in main area */
623 unsigned int reserved_segments
; /* # of reserved segments */
624 unsigned int ovp_segments
; /* # of overprovision segments */
626 /* a threshold to reclaim prefree segments */
627 unsigned int rec_prefree_segments
;
629 /* for small discard management */
630 struct list_head discard_list
; /* 4KB discard list */
631 int nr_discards
; /* # of discards in the list */
632 int max_discards
; /* max. discards to be issued */
634 /* for batched trimming */
635 unsigned int trim_sections
; /* # of sections to trim */
637 struct list_head sit_entry_set
; /* sit entry set list */
639 unsigned int ipu_policy
; /* in-place-update policy */
640 unsigned int min_ipu_util
; /* in-place-update threshold */
641 unsigned int min_fsync_blocks
; /* threshold for fsync */
643 /* for flush command control */
644 struct flush_cmd_control
*cmd_control_info
;
652 * COUNT_TYPE for monitoring
654 * f2fs monitors the number of several block types such as on-writeback,
655 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
668 * The below are the page types of bios used in submit_bio().
669 * The available types are:
670 * DATA User data pages. It operates as async mode.
671 * NODE Node pages. It operates as async mode.
672 * META FS metadata pages such as SIT, NAT, CP.
673 * NR_PAGE_TYPE The number of page types.
674 * META_FLUSH Make sure the previous pages are written
675 * with waiting the bio's completion
676 * ... Only can be used with META.
678 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
685 INMEM
, /* the below types are used by tracepoints only. */
691 struct f2fs_io_info
{
692 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
693 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
694 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
695 block_t blk_addr
; /* block address to be written */
696 struct page
*page
; /* page to be written */
697 struct page
*encrypted_page
; /* encrypted page */
700 #define is_read_io(rw) (((rw) & 1) == READ)
701 struct f2fs_bio_info
{
702 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
703 struct bio
*bio
; /* bios to merge */
704 sector_t last_block_in_bio
; /* last block number */
705 struct f2fs_io_info fio
; /* store buffered io info. */
706 struct rw_semaphore io_rwsem
; /* blocking op for bio */
710 DIR_INODE
, /* for dirty dir inode */
711 FILE_INODE
, /* for dirty regular/symlink inode */
715 /* for inner inode cache management */
716 struct inode_management
{
717 struct radix_tree_root ino_root
; /* ino entry array */
718 spinlock_t ino_lock
; /* for ino entry lock */
719 struct list_head ino_list
; /* inode list head */
720 unsigned long ino_num
; /* number of entries */
723 /* For s_flag in struct f2fs_sb_info */
725 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
726 SBI_IS_CLOSE
, /* specify unmounting */
727 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
728 SBI_POR_DOING
, /* recovery is doing or not */
737 struct f2fs_sb_info
{
738 struct super_block
*sb
; /* pointer to VFS super block */
739 struct proc_dir_entry
*s_proc
; /* proc entry */
740 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
741 int valid_super_block
; /* valid super block no */
742 int s_flag
; /* flags for sbi */
744 /* for node-related operations */
745 struct f2fs_nm_info
*nm_info
; /* node manager */
746 struct inode
*node_inode
; /* cache node blocks */
748 /* for segment-related operations */
749 struct f2fs_sm_info
*sm_info
; /* segment manager */
751 /* for bio operations */
752 struct f2fs_bio_info read_io
; /* for read bios */
753 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
756 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
757 struct inode
*meta_inode
; /* cache meta blocks */
758 struct mutex cp_mutex
; /* checkpoint procedure lock */
759 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
760 struct rw_semaphore node_write
; /* locking node writes */
761 struct mutex writepages
; /* mutex for writepages() */
762 wait_queue_head_t cp_wait
;
763 unsigned long last_time
[MAX_TIME
]; /* to store time in jiffies */
764 long interval_time
[MAX_TIME
]; /* to store thresholds */
766 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
768 /* for orphan inode, use 0'th array */
769 unsigned int max_orphans
; /* max orphan inodes */
771 /* for inode management */
772 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
773 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
775 /* for extent tree cache */
776 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
777 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
778 struct list_head extent_list
; /* lru list for shrinker */
779 spinlock_t extent_lock
; /* locking extent lru list */
780 atomic_t total_ext_tree
; /* extent tree count */
781 struct list_head zombie_list
; /* extent zombie tree list */
782 atomic_t total_zombie_tree
; /* extent zombie tree count */
783 atomic_t total_ext_node
; /* extent info count */
785 /* basic filesystem units */
786 unsigned int log_sectors_per_block
; /* log2 sectors per block */
787 unsigned int log_blocksize
; /* log2 block size */
788 unsigned int blocksize
; /* block size */
789 unsigned int root_ino_num
; /* root inode number*/
790 unsigned int node_ino_num
; /* node inode number*/
791 unsigned int meta_ino_num
; /* meta inode number*/
792 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
793 unsigned int blocks_per_seg
; /* blocks per segment */
794 unsigned int segs_per_sec
; /* segments per section */
795 unsigned int secs_per_zone
; /* sections per zone */
796 unsigned int total_sections
; /* total section count */
797 unsigned int total_node_count
; /* total node block count */
798 unsigned int total_valid_node_count
; /* valid node block count */
799 unsigned int total_valid_inode_count
; /* valid inode count */
800 loff_t max_file_blocks
; /* max block index of file */
801 int active_logs
; /* # of active logs */
802 int dir_level
; /* directory level */
804 block_t user_block_count
; /* # of user blocks */
805 block_t total_valid_block_count
; /* # of valid blocks */
806 block_t alloc_valid_block_count
; /* # of allocated blocks */
807 block_t discard_blks
; /* discard command candidats */
808 block_t last_valid_block_count
; /* for recovery */
809 u32 s_next_generation
; /* for NFS support */
810 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
812 struct f2fs_mount_info mount_opt
; /* mount options */
814 /* for cleaning operations */
815 struct mutex gc_mutex
; /* mutex for GC */
816 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
817 unsigned int cur_victim_sec
; /* current victim section num */
819 /* maximum # of trials to find a victim segment for SSR and GC */
820 unsigned int max_victim_search
;
823 * for stat information.
824 * one is for the LFS mode, and the other is for the SSR mode.
826 #ifdef CONFIG_F2FS_STAT_FS
827 struct f2fs_stat_info
*stat_info
; /* FS status information */
828 unsigned int segment_count
[2]; /* # of allocated segments */
829 unsigned int block_count
[2]; /* # of allocated blocks */
830 atomic_t inplace_count
; /* # of inplace update */
831 atomic64_t total_hit_ext
; /* # of lookup extent cache */
832 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
833 atomic64_t read_hit_largest
; /* # of hit largest extent node */
834 atomic64_t read_hit_cached
; /* # of hit cached extent node */
835 atomic_t inline_xattr
; /* # of inline_xattr inodes */
836 atomic_t inline_inode
; /* # of inline_data inodes */
837 atomic_t inline_dir
; /* # of inline_dentry inodes */
838 int bg_gc
; /* background gc calls */
839 unsigned int ndirty_inode
[NR_INODE_TYPE
]; /* # of dirty inodes */
841 unsigned int last_victim
[2]; /* last victim segment # */
842 spinlock_t stat_lock
; /* lock for stat operations */
844 /* For sysfs suppport */
845 struct kobject s_kobj
;
846 struct completion s_kobj_unregister
;
848 /* For shrinker support */
849 struct list_head s_list
;
850 struct mutex umount_mutex
;
851 unsigned int shrinker_run_no
;
853 /* For write statistics */
854 u64 sectors_written_start
;
858 /* For write statistics. Suppose sector size is 512 bytes,
859 * and the return value is in kbytes. s is of struct f2fs_sb_info.
861 #define BD_PART_WRITTEN(s) \
862 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
863 s->sectors_written_start) >> 1)
865 static inline void f2fs_update_time(struct f2fs_sb_info
*sbi
, int type
)
867 sbi
->last_time
[type
] = jiffies
;
870 static inline bool f2fs_time_over(struct f2fs_sb_info
*sbi
, int type
)
872 struct timespec ts
= {sbi
->interval_time
[type
], 0};
873 unsigned long interval
= timespec_to_jiffies(&ts
);
875 return time_after(jiffies
, sbi
->last_time
[type
] + interval
);
878 static inline bool is_idle(struct f2fs_sb_info
*sbi
)
880 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
881 struct request_queue
*q
= bdev_get_queue(bdev
);
882 struct request_list
*rl
= &q
->root_rl
;
884 if (rl
->count
[BLK_RW_SYNC
] || rl
->count
[BLK_RW_ASYNC
])
887 return f2fs_time_over(sbi
, REQ_TIME
);
893 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
895 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
898 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
900 return sb
->s_fs_info
;
903 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
905 return F2FS_SB(inode
->i_sb
);
908 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
910 return F2FS_I_SB(mapping
->host
);
913 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
915 return F2FS_M_SB(page
->mapping
);
918 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
920 return (struct f2fs_super_block
*)(sbi
->raw_super
);
923 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
925 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
928 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
930 return (struct f2fs_node
*)page_address(page
);
933 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
935 return &((struct f2fs_node
*)page_address(page
))->i
;
938 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
940 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
943 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
945 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
948 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
950 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
953 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
955 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
958 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
960 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
963 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
965 return sbi
->meta_inode
->i_mapping
;
968 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
970 return sbi
->node_inode
->i_mapping
;
973 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
975 return sbi
->s_flag
& (0x01 << type
);
978 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
980 sbi
->s_flag
|= (0x01 << type
);
983 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
985 sbi
->s_flag
&= ~(0x01 << type
);
988 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
990 return le64_to_cpu(cp
->checkpoint_ver
);
993 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
995 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
996 return ckpt_flags
& f
;
999 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1001 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1003 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1006 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1008 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1010 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1013 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
1015 down_read(&sbi
->cp_rwsem
);
1018 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
1020 up_read(&sbi
->cp_rwsem
);
1023 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
1025 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
1028 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
1030 up_write(&sbi
->cp_rwsem
);
1033 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
1035 int reason
= CP_SYNC
;
1037 if (test_opt(sbi
, FASTBOOT
))
1038 reason
= CP_FASTBOOT
;
1039 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
1044 static inline bool __remain_node_summaries(int reason
)
1046 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
1049 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
1051 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
1052 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1056 * Check whether the given nid is within node id range.
1058 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1060 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1062 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1067 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1070 * Check whether the inode has blocks or not
1072 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1074 if (F2FS_I(inode
)->i_xattr_nid
)
1075 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1077 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1080 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1082 return ofs
== XATTR_NODE_OFFSET
;
1085 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1086 struct inode
*inode
, blkcnt_t count
)
1088 block_t valid_block_count
;
1090 spin_lock(&sbi
->stat_lock
);
1092 sbi
->total_valid_block_count
+ (block_t
)count
;
1093 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1094 spin_unlock(&sbi
->stat_lock
);
1097 inode
->i_blocks
+= count
;
1098 sbi
->total_valid_block_count
= valid_block_count
;
1099 sbi
->alloc_valid_block_count
+= (block_t
)count
;
1100 spin_unlock(&sbi
->stat_lock
);
1104 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1105 struct inode
*inode
,
1108 spin_lock(&sbi
->stat_lock
);
1109 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1110 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1111 inode
->i_blocks
-= count
;
1112 sbi
->total_valid_block_count
-= (block_t
)count
;
1113 spin_unlock(&sbi
->stat_lock
);
1116 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1118 atomic_inc(&sbi
->nr_pages
[count_type
]);
1119 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1122 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1124 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
1125 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1126 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1129 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1131 atomic_dec(&sbi
->nr_pages
[count_type
]);
1134 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1136 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1137 !S_ISLNK(inode
->i_mode
))
1140 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
1141 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1142 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1145 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1147 return atomic_read(&sbi
->nr_pages
[count_type
]);
1150 static inline int get_dirty_pages(struct inode
*inode
)
1152 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
1155 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1157 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1158 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
1159 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
1162 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1164 return sbi
->total_valid_block_count
;
1167 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1169 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1171 /* return NAT or SIT bitmap */
1172 if (flag
== NAT_BITMAP
)
1173 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1174 else if (flag
== SIT_BITMAP
)
1175 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1180 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1182 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1185 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1187 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1190 if (__cp_payload(sbi
) > 0) {
1191 if (flag
== NAT_BITMAP
)
1192 return &ckpt
->sit_nat_version_bitmap
;
1194 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1196 offset
= (flag
== NAT_BITMAP
) ?
1197 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1198 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1202 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1205 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1206 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1208 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1211 * odd numbered checkpoint should at cp segment 0
1212 * and even segment must be at cp segment 1
1214 if (!(ckpt_version
& 1))
1215 start_addr
+= sbi
->blocks_per_seg
;
1220 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1222 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1225 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1226 struct inode
*inode
)
1228 block_t valid_block_count
;
1229 unsigned int valid_node_count
;
1231 spin_lock(&sbi
->stat_lock
);
1233 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1234 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1235 spin_unlock(&sbi
->stat_lock
);
1239 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1240 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1241 spin_unlock(&sbi
->stat_lock
);
1248 sbi
->alloc_valid_block_count
++;
1249 sbi
->total_valid_node_count
++;
1250 sbi
->total_valid_block_count
++;
1251 spin_unlock(&sbi
->stat_lock
);
1256 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1257 struct inode
*inode
)
1259 spin_lock(&sbi
->stat_lock
);
1261 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1262 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1263 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1266 sbi
->total_valid_node_count
--;
1267 sbi
->total_valid_block_count
--;
1269 spin_unlock(&sbi
->stat_lock
);
1272 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1274 return sbi
->total_valid_node_count
;
1277 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1279 spin_lock(&sbi
->stat_lock
);
1280 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1281 sbi
->total_valid_inode_count
++;
1282 spin_unlock(&sbi
->stat_lock
);
1285 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1287 spin_lock(&sbi
->stat_lock
);
1288 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1289 sbi
->total_valid_inode_count
--;
1290 spin_unlock(&sbi
->stat_lock
);
1293 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1295 return sbi
->total_valid_inode_count
;
1298 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1299 pgoff_t index
, bool for_write
)
1302 return grab_cache_page(mapping
, index
);
1303 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1306 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1308 char *src_kaddr
= kmap(src
);
1309 char *dst_kaddr
= kmap(dst
);
1311 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1316 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1322 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1325 page_cache_release(page
);
1328 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1331 f2fs_put_page(dn
->node_page
, 1);
1332 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1333 f2fs_put_page(dn
->inode_page
, 0);
1334 dn
->node_page
= NULL
;
1335 dn
->inode_page
= NULL
;
1338 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1341 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1344 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1349 entry
= kmem_cache_alloc(cachep
, flags
);
1351 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1355 static inline struct bio
*f2fs_bio_alloc(int npages
)
1359 /* No failure on bio allocation */
1360 bio
= bio_alloc(GFP_NOIO
, npages
);
1362 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1366 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1367 unsigned long index
, void *item
)
1369 while (radix_tree_insert(root
, index
, item
))
1373 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1375 static inline bool IS_INODE(struct page
*page
)
1377 struct f2fs_node
*p
= F2FS_NODE(page
);
1378 return RAW_IS_INODE(p
);
1381 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1383 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1386 static inline block_t
datablock_addr(struct page
*node_page
,
1387 unsigned int offset
)
1389 struct f2fs_node
*raw_node
;
1391 raw_node
= F2FS_NODE(node_page
);
1392 addr_array
= blkaddr_in_node(raw_node
);
1393 return le32_to_cpu(addr_array
[offset
]);
1396 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1401 mask
= 1 << (7 - (nr
& 0x07));
1402 return mask
& *addr
;
1405 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1410 mask
= 1 << (7 - (nr
& 0x07));
1414 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1419 mask
= 1 << (7 - (nr
& 0x07));
1423 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1429 mask
= 1 << (7 - (nr
& 0x07));
1435 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1441 mask
= 1 << (7 - (nr
& 0x07));
1447 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1452 mask
= 1 << (7 - (nr
& 0x07));
1456 /* used for f2fs_inode_info->flags */
1458 FI_NEW_INODE
, /* indicate newly allocated inode */
1459 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1460 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1461 FI_INC_LINK
, /* need to increment i_nlink */
1462 FI_ACL_MODE
, /* indicate acl mode */
1463 FI_NO_ALLOC
, /* should not allocate any blocks */
1464 FI_FREE_NID
, /* free allocated nide */
1465 FI_UPDATE_DIR
, /* should update inode block for consistency */
1466 FI_DELAY_IPUT
, /* used for the recovery */
1467 FI_NO_EXTENT
, /* not to use the extent cache */
1468 FI_INLINE_XATTR
, /* used for inline xattr */
1469 FI_INLINE_DATA
, /* used for inline data*/
1470 FI_INLINE_DENTRY
, /* used for inline dentry */
1471 FI_APPEND_WRITE
, /* inode has appended data */
1472 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1473 FI_NEED_IPU
, /* used for ipu per file */
1474 FI_ATOMIC_FILE
, /* indicate atomic file */
1475 FI_VOLATILE_FILE
, /* indicate volatile file */
1476 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1477 FI_DROP_CACHE
, /* drop dirty page cache */
1478 FI_DATA_EXIST
, /* indicate data exists */
1479 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1480 FI_DO_DEFRAG
, /* indicate defragment is running */
1481 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1484 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1486 if (!test_bit(flag
, &fi
->flags
))
1487 set_bit(flag
, &fi
->flags
);
1490 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1492 return test_bit(flag
, &fi
->flags
);
1495 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1497 if (test_bit(flag
, &fi
->flags
))
1498 clear_bit(flag
, &fi
->flags
);
1501 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1503 fi
->i_acl_mode
= mode
;
1504 set_inode_flag(fi
, FI_ACL_MODE
);
1507 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1508 struct f2fs_inode
*ri
)
1510 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1511 set_inode_flag(fi
, FI_INLINE_XATTR
);
1512 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1513 set_inode_flag(fi
, FI_INLINE_DATA
);
1514 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1515 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1516 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1517 set_inode_flag(fi
, FI_DATA_EXIST
);
1518 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1519 set_inode_flag(fi
, FI_INLINE_DOTS
);
1522 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1523 struct f2fs_inode
*ri
)
1527 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1528 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1529 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1530 ri
->i_inline
|= F2FS_INLINE_DATA
;
1531 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1532 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1533 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1534 ri
->i_inline
|= F2FS_DATA_EXIST
;
1535 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1536 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1539 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1541 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1544 static inline unsigned int addrs_per_inode(struct inode
*inode
)
1546 if (f2fs_has_inline_xattr(inode
))
1547 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1548 return DEF_ADDRS_PER_INODE
;
1551 static inline void *inline_xattr_addr(struct page
*page
)
1553 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1554 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1555 F2FS_INLINE_XATTR_ADDRS
]);
1558 static inline int inline_xattr_size(struct inode
*inode
)
1560 if (f2fs_has_inline_xattr(inode
))
1561 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1566 static inline int f2fs_has_inline_data(struct inode
*inode
)
1568 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1571 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1573 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1574 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1577 static inline int f2fs_exist_data(struct inode
*inode
)
1579 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1582 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1584 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1587 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1589 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1592 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1594 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1597 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1599 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1602 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1604 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1607 static inline void *inline_data_addr(struct page
*page
)
1609 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1610 return (void *)&(ri
->i_addr
[1]);
1613 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1615 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1618 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1620 if (!f2fs_has_inline_dentry(dir
))
1624 static inline int is_file(struct inode
*inode
, int type
)
1626 return F2FS_I(inode
)->i_advise
& type
;
1629 static inline void set_file(struct inode
*inode
, int type
)
1631 F2FS_I(inode
)->i_advise
|= type
;
1634 static inline void clear_file(struct inode
*inode
, int type
)
1636 F2FS_I(inode
)->i_advise
&= ~type
;
1639 static inline int f2fs_readonly(struct super_block
*sb
)
1641 return sb
->s_flags
& MS_RDONLY
;
1644 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1646 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1649 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1651 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1652 sbi
->sb
->s_flags
|= MS_RDONLY
;
1655 static inline bool is_dot_dotdot(const struct qstr
*str
)
1657 if (str
->len
== 1 && str
->name
[0] == '.')
1660 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1666 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1668 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1669 is_inode_flag_set(F2FS_I(inode
), FI_NO_EXTENT
))
1672 return S_ISREG(inode
->i_mode
);
1675 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1679 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1681 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1685 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1689 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1691 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1695 #define get_inode_mode(i) \
1696 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1697 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1699 /* get offset of first page in next direct node */
1700 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1701 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1702 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1703 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1708 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1709 void truncate_data_blocks(struct dnode_of_data
*);
1710 int truncate_blocks(struct inode
*, u64
, bool);
1711 int f2fs_truncate(struct inode
*, bool);
1712 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1713 int f2fs_setattr(struct dentry
*, struct iattr
*);
1714 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1715 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1716 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1717 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1722 void f2fs_set_inode_flags(struct inode
*);
1723 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1724 int try_to_free_nats(struct f2fs_sb_info
*, int);
1725 int update_inode(struct inode
*, struct page
*);
1726 int update_inode_page(struct inode
*);
1727 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1728 void f2fs_evict_inode(struct inode
*);
1729 void handle_failed_inode(struct inode
*);
1734 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1739 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1740 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1742 struct f2fs_dir_entry
*find_target_dentry(struct f2fs_filename
*,
1743 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1744 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1745 unsigned int, struct f2fs_str
*);
1746 void do_make_empty_dir(struct inode
*, struct inode
*,
1747 struct f2fs_dentry_ptr
*);
1748 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1749 const struct qstr
*, struct page
*);
1750 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1751 int room_for_filename(const void *, int, int);
1752 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1753 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1755 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1756 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1757 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1758 struct page
*, struct inode
*);
1759 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1760 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1761 const struct qstr
*, f2fs_hash_t
, unsigned int);
1762 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1764 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1766 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1767 bool f2fs_empty_dir(struct inode
*);
1769 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1771 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1772 inode
, inode
->i_ino
, inode
->i_mode
);
1778 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1779 int f2fs_sync_fs(struct super_block
*, int);
1780 extern __printf(3, 4)
1781 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1786 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1791 struct dnode_of_data
;
1794 bool available_free_memory(struct f2fs_sb_info
*, int);
1795 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1796 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1797 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1798 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1799 pgoff_t
get_next_page_offset(struct dnode_of_data
*, pgoff_t
);
1800 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1801 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1802 int truncate_xattr_node(struct inode
*, struct page
*);
1803 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1804 int remove_inode_page(struct inode
*);
1805 struct page
*new_inode_page(struct inode
*);
1806 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1807 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1808 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1809 struct page
*get_node_page_ra(struct page
*, int);
1810 void sync_inode_page(struct dnode_of_data
*);
1811 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1812 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1813 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1814 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1815 int try_to_free_nids(struct f2fs_sb_info
*, int);
1816 void recover_inline_xattr(struct inode
*, struct page
*);
1817 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1818 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1819 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1820 struct f2fs_summary_block
*);
1821 void flush_nat_entries(struct f2fs_sb_info
*);
1822 int build_node_manager(struct f2fs_sb_info
*);
1823 void destroy_node_manager(struct f2fs_sb_info
*);
1824 int __init
create_node_manager_caches(void);
1825 void destroy_node_manager_caches(void);
1830 void register_inmem_page(struct inode
*, struct page
*);
1831 int commit_inmem_pages(struct inode
*, bool);
1832 void f2fs_balance_fs(struct f2fs_sb_info
*, bool);
1833 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1834 int f2fs_issue_flush(struct f2fs_sb_info
*);
1835 int create_flush_cmd_control(struct f2fs_sb_info
*);
1836 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1837 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1838 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
1839 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1840 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1841 void release_discard_addrs(struct f2fs_sb_info
*);
1842 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1843 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1844 void allocate_new_segments(struct f2fs_sb_info
*);
1845 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1846 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1847 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1848 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1849 void write_node_page(unsigned int, struct f2fs_io_info
*);
1850 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1851 void rewrite_data_page(struct f2fs_io_info
*);
1852 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
1853 block_t
, block_t
, unsigned char, bool);
1854 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1855 block_t
, block_t
*, struct f2fs_summary
*, int);
1856 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
, bool);
1857 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
1858 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1859 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1860 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1861 int, unsigned int, int);
1862 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1863 int build_segment_manager(struct f2fs_sb_info
*);
1864 void destroy_segment_manager(struct f2fs_sb_info
*);
1865 int __init
create_segment_manager_caches(void);
1866 void destroy_segment_manager_caches(void);
1871 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1872 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1873 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
1874 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
1875 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
1876 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1877 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1878 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1879 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1880 void release_ino_entry(struct f2fs_sb_info
*);
1881 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1882 int acquire_orphan_inode(struct f2fs_sb_info
*);
1883 void release_orphan_inode(struct f2fs_sb_info
*);
1884 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1885 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1886 int recover_orphan_inodes(struct f2fs_sb_info
*);
1887 int get_valid_checkpoint(struct f2fs_sb_info
*);
1888 void update_dirty_page(struct inode
*, struct page
*);
1889 void add_dirty_dir_inode(struct inode
*);
1890 void remove_dirty_inode(struct inode
*);
1891 int sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
1892 int write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1893 void init_ino_entry_info(struct f2fs_sb_info
*);
1894 int __init
create_checkpoint_caches(void);
1895 void destroy_checkpoint_caches(void);
1900 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1901 void f2fs_submit_merged_bio_cond(struct f2fs_sb_info
*, struct inode
*,
1902 struct page
*, nid_t
, enum page_type
, int);
1903 int f2fs_submit_page_bio(struct f2fs_io_info
*);
1904 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
1905 void set_data_blkaddr(struct dnode_of_data
*);
1906 int reserve_new_block(struct dnode_of_data
*);
1907 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
1908 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1909 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
1910 struct page
*find_data_page(struct inode
*, pgoff_t
);
1911 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
1912 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1913 int do_write_data_page(struct f2fs_io_info
*);
1914 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
1915 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1916 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1917 int f2fs_release_page(struct page
*, gfp_t
);
1922 int start_gc_thread(struct f2fs_sb_info
*);
1923 void stop_gc_thread(struct f2fs_sb_info
*);
1924 block_t
start_bidx_of_node(unsigned int, struct inode
*);
1925 int f2fs_gc(struct f2fs_sb_info
*, bool);
1926 void build_gc_manager(struct f2fs_sb_info
*);
1931 int recover_fsync_data(struct f2fs_sb_info
*);
1932 bool space_for_roll_forward(struct f2fs_sb_info
*);
1937 #ifdef CONFIG_F2FS_STAT_FS
1938 struct f2fs_stat_info
{
1939 struct list_head stat_list
;
1940 struct f2fs_sb_info
*sbi
;
1941 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1942 int main_area_segs
, main_area_sections
, main_area_zones
;
1943 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
1944 unsigned long long hit_total
, total_ext
;
1945 int ext_tree
, zombie_tree
, ext_node
;
1946 int ndirty_node
, ndirty_meta
;
1947 int ndirty_dent
, ndirty_dirs
, ndirty_data
, ndirty_files
;
1948 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1949 int total_count
, utilization
;
1950 int bg_gc
, inmem_pages
, wb_pages
;
1951 int inline_xattr
, inline_inode
, inline_dir
;
1952 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1953 unsigned int bimodal
, avg_vblocks
;
1954 int util_free
, util_valid
, util_invalid
;
1955 int rsvd_segs
, overp_segs
;
1956 int dirty_count
, node_pages
, meta_pages
;
1957 int prefree_count
, call_count
, cp_count
, bg_cp_count
;
1958 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1959 int bg_node_segs
, bg_data_segs
;
1960 int tot_blks
, data_blks
, node_blks
;
1961 int bg_data_blks
, bg_node_blks
;
1962 int curseg
[NR_CURSEG_TYPE
];
1963 int cursec
[NR_CURSEG_TYPE
];
1964 int curzone
[NR_CURSEG_TYPE
];
1966 unsigned int segment_count
[2];
1967 unsigned int block_count
[2];
1968 unsigned int inplace_count
;
1969 unsigned long long base_mem
, cache_mem
, page_mem
;
1972 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1974 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1977 #define stat_inc_cp_count(si) ((si)->cp_count++)
1978 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
1979 #define stat_inc_call_count(si) ((si)->call_count++)
1980 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1981 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
1982 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
1983 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1984 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1985 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1986 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
1987 #define stat_inc_inline_xattr(inode) \
1989 if (f2fs_has_inline_xattr(inode)) \
1990 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1992 #define stat_dec_inline_xattr(inode) \
1994 if (f2fs_has_inline_xattr(inode)) \
1995 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1997 #define stat_inc_inline_inode(inode) \
1999 if (f2fs_has_inline_data(inode)) \
2000 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2002 #define stat_dec_inline_inode(inode) \
2004 if (f2fs_has_inline_data(inode)) \
2005 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2007 #define stat_inc_inline_dir(inode) \
2009 if (f2fs_has_inline_dentry(inode)) \
2010 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2012 #define stat_dec_inline_dir(inode) \
2014 if (f2fs_has_inline_dentry(inode)) \
2015 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2017 #define stat_inc_seg_type(sbi, curseg) \
2018 ((sbi)->segment_count[(curseg)->alloc_type]++)
2019 #define stat_inc_block_count(sbi, curseg) \
2020 ((sbi)->block_count[(curseg)->alloc_type]++)
2021 #define stat_inc_inplace_blocks(sbi) \
2022 (atomic_inc(&(sbi)->inplace_count))
2023 #define stat_inc_seg_count(sbi, type, gc_type) \
2025 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2027 if (type == SUM_TYPE_DATA) { \
2029 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2032 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2036 #define stat_inc_tot_blk_count(si, blks) \
2037 (si->tot_blks += (blks))
2039 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2041 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2042 stat_inc_tot_blk_count(si, blks); \
2043 si->data_blks += (blks); \
2044 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2047 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2049 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2050 stat_inc_tot_blk_count(si, blks); \
2051 si->node_blks += (blks); \
2052 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2055 int f2fs_build_stats(struct f2fs_sb_info
*);
2056 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2057 int __init
f2fs_create_root_stats(void);
2058 void f2fs_destroy_root_stats(void);
2060 #define stat_inc_cp_count(si)
2061 #define stat_inc_bg_cp_count(si)
2062 #define stat_inc_call_count(si)
2063 #define stat_inc_bggc_count(si)
2064 #define stat_inc_dirty_inode(sbi, type)
2065 #define stat_dec_dirty_inode(sbi, type)
2066 #define stat_inc_total_hit(sb)
2067 #define stat_inc_rbtree_node_hit(sb)
2068 #define stat_inc_largest_node_hit(sbi)
2069 #define stat_inc_cached_node_hit(sbi)
2070 #define stat_inc_inline_xattr(inode)
2071 #define stat_dec_inline_xattr(inode)
2072 #define stat_inc_inline_inode(inode)
2073 #define stat_dec_inline_inode(inode)
2074 #define stat_inc_inline_dir(inode)
2075 #define stat_dec_inline_dir(inode)
2076 #define stat_inc_seg_type(sbi, curseg)
2077 #define stat_inc_block_count(sbi, curseg)
2078 #define stat_inc_inplace_blocks(sbi)
2079 #define stat_inc_seg_count(sbi, type, gc_type)
2080 #define stat_inc_tot_blk_count(si, blks)
2081 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2082 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2084 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2085 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2086 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2087 static inline void f2fs_destroy_root_stats(void) { }
2090 extern const struct file_operations f2fs_dir_operations
;
2091 extern const struct file_operations f2fs_file_operations
;
2092 extern const struct inode_operations f2fs_file_inode_operations
;
2093 extern const struct address_space_operations f2fs_dblock_aops
;
2094 extern const struct address_space_operations f2fs_node_aops
;
2095 extern const struct address_space_operations f2fs_meta_aops
;
2096 extern const struct inode_operations f2fs_dir_inode_operations
;
2097 extern const struct inode_operations f2fs_symlink_inode_operations
;
2098 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2099 extern const struct inode_operations f2fs_special_inode_operations
;
2100 extern struct kmem_cache
*inode_entry_slab
;
2105 bool f2fs_may_inline_data(struct inode
*);
2106 bool f2fs_may_inline_dentry(struct inode
*);
2107 void read_inline_data(struct page
*, struct page
*);
2108 bool truncate_inline_inode(struct page
*, u64
);
2109 int f2fs_read_inline_data(struct inode
*, struct page
*);
2110 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2111 int f2fs_convert_inline_inode(struct inode
*);
2112 int f2fs_write_inline_data(struct inode
*, struct page
*);
2113 bool recover_inline_data(struct inode
*, struct page
*);
2114 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2115 struct f2fs_filename
*, struct page
**);
2116 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
2117 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2118 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2120 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2121 struct inode
*, struct inode
*);
2122 bool f2fs_empty_inline_dir(struct inode
*);
2123 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2125 int f2fs_inline_data_fiemap(struct inode
*,
2126 struct fiemap_extent_info
*, __u64
, __u64
);
2131 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2132 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2133 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2134 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2139 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2140 bool f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2141 unsigned int f2fs_destroy_extent_node(struct inode
*);
2142 void f2fs_destroy_extent_tree(struct inode
*);
2143 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2144 void f2fs_update_extent_cache(struct dnode_of_data
*);
2145 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2146 pgoff_t
, block_t
, unsigned int);
2147 void init_extent_cache_info(struct f2fs_sb_info
*);
2148 int __init
create_extent_cache(void);
2149 void destroy_extent_cache(void);
2154 static inline int f2fs_encrypted_inode(struct inode
*inode
)
2156 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2157 return file_is_encrypt(inode
);
2163 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2165 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2166 file_set_encrypt(inode
);
2170 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2172 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2173 return unlikely(bio
->bi_private
!= NULL
);
2179 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2181 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2182 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2188 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2190 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2191 umode_t mode
= inode
->i_mode
;
2193 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2199 /* crypto_policy.c */
2200 int f2fs_is_child_context_consistent_with_parent(struct inode
*,
2202 int f2fs_inherit_context(struct inode
*, struct inode
*, struct page
*);
2203 int f2fs_process_policy(const struct f2fs_encryption_policy
*, struct inode
*);
2204 int f2fs_get_policy(struct inode
*, struct f2fs_encryption_policy
*);
2207 extern struct kmem_cache
*f2fs_crypt_info_cachep
;
2208 bool f2fs_valid_contents_enc_mode(uint32_t);
2209 uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2210 struct f2fs_crypto_ctx
*f2fs_get_crypto_ctx(struct inode
*);
2211 void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx
*);
2212 struct page
*f2fs_encrypt(struct inode
*, struct page
*);
2213 int f2fs_decrypt(struct f2fs_crypto_ctx
*, struct page
*);
2214 int f2fs_decrypt_one(struct inode
*, struct page
*);
2215 void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx
*, struct bio
*);
2218 void f2fs_free_encryption_info(struct inode
*, struct f2fs_crypt_info
*);
2219 int _f2fs_get_encryption_info(struct inode
*inode
);
2221 /* crypto_fname.c */
2222 bool f2fs_valid_filenames_enc_mode(uint32_t);
2223 u32
f2fs_fname_crypto_round_up(u32
, u32
);
2224 int f2fs_fname_crypto_alloc_buffer(struct inode
*, u32
, struct f2fs_str
*);
2225 int f2fs_fname_disk_to_usr(struct inode
*, f2fs_hash_t
*,
2226 const struct f2fs_str
*, struct f2fs_str
*);
2227 int f2fs_fname_usr_to_disk(struct inode
*, const struct qstr
*,
2230 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2231 void f2fs_restore_and_release_control_page(struct page
**);
2232 void f2fs_restore_control_page(struct page
*);
2234 int __init
f2fs_init_crypto(void);
2235 int f2fs_crypto_initialize(void);
2236 void f2fs_exit_crypto(void);
2238 int f2fs_has_encryption_key(struct inode
*);
2240 static inline int f2fs_get_encryption_info(struct inode
*inode
)
2242 struct f2fs_crypt_info
*ci
= F2FS_I(inode
)->i_crypt_info
;
2245 (ci
->ci_keyring_key
&&
2246 (ci
->ci_keyring_key
->flags
& ((1 << KEY_FLAG_INVALIDATED
) |
2247 (1 << KEY_FLAG_REVOKED
) |
2248 (1 << KEY_FLAG_DEAD
)))))
2249 return _f2fs_get_encryption_info(inode
);
2253 void f2fs_fname_crypto_free_buffer(struct f2fs_str
*);
2254 int f2fs_fname_setup_filename(struct inode
*, const struct qstr
*,
2255 int lookup
, struct f2fs_filename
*);
2256 void f2fs_fname_free_filename(struct f2fs_filename
*);
2258 static inline void f2fs_restore_and_release_control_page(struct page
**p
) { }
2259 static inline void f2fs_restore_control_page(struct page
*p
) { }
2261 static inline int __init
f2fs_init_crypto(void) { return 0; }
2262 static inline void f2fs_exit_crypto(void) { }
2264 static inline int f2fs_has_encryption_key(struct inode
*i
) { return 0; }
2265 static inline int f2fs_get_encryption_info(struct inode
*i
) { return 0; }
2266 static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str
*p
) { }
2268 static inline int f2fs_fname_setup_filename(struct inode
*dir
,
2269 const struct qstr
*iname
,
2270 int lookup
, struct f2fs_filename
*fname
)
2272 memset(fname
, 0, sizeof(struct f2fs_filename
));
2273 fname
->usr_fname
= iname
;
2274 fname
->disk_name
.name
= (unsigned char *)iname
->name
;
2275 fname
->disk_name
.len
= iname
->len
;
2279 static inline void f2fs_fname_free_filename(struct f2fs_filename
*fname
) { }