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/bio.h>
24 #ifdef CONFIG_F2FS_CHECK_FS
25 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
26 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
28 #define f2fs_bug_on(sbi, condition) \
30 if (unlikely(condition)) { \
32 set_sbi_flag(sbi, SBI_NEED_FSCK); \
35 #define f2fs_down_write(x, y) down_write(x)
41 #define F2FS_MOUNT_BG_GC 0x00000001
42 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
43 #define F2FS_MOUNT_DISCARD 0x00000004
44 #define F2FS_MOUNT_NOHEAP 0x00000008
45 #define F2FS_MOUNT_XATTR_USER 0x00000010
46 #define F2FS_MOUNT_POSIX_ACL 0x00000020
47 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
48 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
49 #define F2FS_MOUNT_INLINE_DATA 0x00000100
50 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
51 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
52 #define F2FS_MOUNT_NOBARRIER 0x00000800
53 #define F2FS_MOUNT_FASTBOOT 0x00001000
54 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
56 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
57 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
58 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
60 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
61 typecheck(unsigned long long, b) && \
62 ((long long)((a) - (b)) > 0))
64 typedef u32 block_t
; /*
65 * should not change u32, since it is the on-disk block
66 * address format, __le32.
70 struct f2fs_mount_info
{
74 #define F2FS_FEATURE_ENCRYPT 0x0001
76 #define F2FS_HAS_FEATURE(sb, mask) \
77 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
78 #define F2FS_SET_FEATURE(sb, mask) \
79 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
80 #define F2FS_CLEAR_FEATURE(sb, mask) \
81 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
83 #define CRCPOLY_LE 0xedb88320
85 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
87 unsigned char *p
= (unsigned char *)buf
;
88 __u32 crc
= F2FS_SUPER_MAGIC
;
93 for (i
= 0; i
< 8; i
++)
94 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
99 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
101 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
105 * For checkpoint manager
120 #define DEF_BATCHED_TRIM_SECTIONS 32
121 #define BATCHED_TRIM_SEGMENTS(sbi) \
122 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
123 #define BATCHED_TRIM_BLOCKS(sbi) \
124 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
135 * For CP/NAT/SIT/SSA readahead
145 /* for the list of ino */
147 ORPHAN_INO
, /* for orphan ino list */
148 APPEND_INO
, /* for append ino list */
149 UPDATE_INO
, /* for update ino list */
150 MAX_INO_ENTRY
, /* max. list */
154 struct list_head list
; /* list head */
155 nid_t ino
; /* inode number */
159 * for the list of directory inodes or gc inodes.
160 * NOTE: there are two slab users for this structure, if we add/modify/delete
161 * fields in structure for one of slab users, it may affect fields or size of
162 * other one, in this condition, it's better to split both of slab and related
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)
234 #define F2FS_IOC_SET_ENCRYPTION_POLICY \
235 _IOR('f', 19, struct f2fs_encryption_policy)
236 #define F2FS_IOC_GET_ENCRYPTION_PWSALT \
237 _IOW('f', 20, __u8[16])
238 #define F2FS_IOC_GET_ENCRYPTION_POLICY \
239 _IOW('f', 21, struct f2fs_encryption_policy)
242 * should be same as XFS_IOC_GOINGDOWN.
243 * Flags for going down operation used by FS_IOC_GOINGDOWN
245 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
246 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
247 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
248 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
250 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
252 * ioctl commands in 32 bit emulation
254 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
255 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
259 * For INODE and NODE manager
261 /* for directory operations */
267 struct f2fs_filename
{
268 const struct qstr
*usr_fname
;
269 struct f2fs_str disk_name
;
271 #ifdef CONFIG_F2FS_FS_ENCRYPTION
272 struct f2fs_str crypto_buf
;
276 #define FSTR_INIT(n, l) { .name = n, .len = l }
277 #define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
278 #define fname_name(p) ((p)->disk_name.name)
279 #define fname_len(p) ((p)->disk_name.len)
281 struct f2fs_dentry_ptr
{
284 struct f2fs_dir_entry
*dentry
;
285 __u8 (*filename
)[F2FS_SLOT_LEN
];
289 static inline void make_dentry_ptr(struct inode
*inode
,
290 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
295 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
296 d
->max
= NR_DENTRY_IN_BLOCK
;
297 d
->bitmap
= &t
->dentry_bitmap
;
298 d
->dentry
= t
->dentry
;
299 d
->filename
= t
->filename
;
301 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
302 d
->max
= NR_INLINE_DENTRY
;
303 d
->bitmap
= &t
->dentry_bitmap
;
304 d
->dentry
= t
->dentry
;
305 d
->filename
= t
->filename
;
310 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
311 * as its node offset to distinguish from index node blocks.
312 * But some bits are used to mark the node block.
314 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
317 ALLOC_NODE
, /* allocate a new node page if needed */
318 LOOKUP_NODE
, /* look up a node without readahead */
320 * look up a node with readahead called
325 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
327 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
329 /* vector size for gang look-up from extent cache that consists of radix tree */
330 #define EXT_TREE_VEC_SIZE 64
332 /* for in-memory extent cache entry */
333 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
335 /* number of extent info in extent cache we try to shrink */
336 #define EXTENT_CACHE_SHRINK_NUMBER 128
339 unsigned int fofs
; /* start offset in a file */
340 u32 blk
; /* start block address of the extent */
341 unsigned int len
; /* length of the extent */
345 struct rb_node rb_node
; /* rb node located in rb-tree */
346 struct list_head list
; /* node in global extent list of sbi */
347 struct extent_info ei
; /* extent info */
351 nid_t ino
; /* inode number */
352 struct rb_root root
; /* root of extent info rb-tree */
353 struct extent_node
*cached_en
; /* recently accessed extent node */
354 struct extent_info largest
; /* largested extent info */
355 rwlock_t lock
; /* protect extent info rb-tree */
356 atomic_t refcount
; /* reference count of rb-tree */
357 unsigned int count
; /* # of extent node in rb-tree*/
361 * This structure is taken from ext4_map_blocks.
363 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
365 #define F2FS_MAP_NEW (1 << BH_New)
366 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
367 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
368 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
371 struct f2fs_map_blocks
{
375 unsigned int m_flags
;
378 /* for flag in get_data_block */
379 #define F2FS_GET_BLOCK_READ 0
380 #define F2FS_GET_BLOCK_DIO 1
381 #define F2FS_GET_BLOCK_FIEMAP 2
382 #define F2FS_GET_BLOCK_BMAP 3
385 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
387 #define FADVISE_COLD_BIT 0x01
388 #define FADVISE_LOST_PINO_BIT 0x02
389 #define FADVISE_ENCRYPT_BIT 0x04
390 #define FADVISE_ENC_NAME_BIT 0x08
392 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
393 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
394 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
395 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
396 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
397 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
398 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
399 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
400 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
401 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
402 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
404 /* Encryption algorithms */
405 #define F2FS_ENCRYPTION_MODE_INVALID 0
406 #define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
407 #define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
408 #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
409 #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
411 #include "f2fs_crypto.h"
413 #define DEF_DIR_LEVEL 0
415 struct f2fs_inode_info
{
416 struct inode vfs_inode
; /* serve a vfs inode */
417 unsigned long i_flags
; /* keep an inode flags for ioctl */
418 unsigned char i_advise
; /* use to give file attribute hints */
419 unsigned char i_dir_level
; /* use for dentry level for large dir */
420 unsigned int i_current_depth
; /* use only in directory structure */
421 unsigned int i_pino
; /* parent inode number */
422 umode_t i_acl_mode
; /* keep file acl mode temporarily */
424 /* Use below internally in f2fs*/
425 unsigned long flags
; /* use to pass per-file flags */
426 struct rw_semaphore i_sem
; /* protect fi info */
427 atomic_t dirty_pages
; /* # of dirty pages */
428 f2fs_hash_t chash
; /* hash value of given file name */
429 unsigned int clevel
; /* maximum level of given file name */
430 nid_t i_xattr_nid
; /* node id that contains xattrs */
431 unsigned long long xattr_ver
; /* cp version of xattr modification */
432 struct inode_entry
*dirty_dir
; /* the pointer of dirty dir */
434 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
435 struct mutex inmem_lock
; /* lock for inmemory pages */
437 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
439 #ifdef CONFIG_F2FS_FS_ENCRYPTION
440 /* Encryption params */
441 struct f2fs_crypt_info
*i_crypt_info
;
445 static inline void get_extent_info(struct extent_info
*ext
,
446 struct f2fs_extent i_ext
)
448 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
449 ext
->blk
= le32_to_cpu(i_ext
.blk
);
450 ext
->len
= le32_to_cpu(i_ext
.len
);
453 static inline void set_raw_extent(struct extent_info
*ext
,
454 struct f2fs_extent
*i_ext
)
456 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
457 i_ext
->blk
= cpu_to_le32(ext
->blk
);
458 i_ext
->len
= cpu_to_le32(ext
->len
);
461 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
462 u32 blk
, unsigned int len
)
469 static inline bool __is_extent_same(struct extent_info
*ei1
,
470 struct extent_info
*ei2
)
472 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
473 ei1
->len
== ei2
->len
);
476 static inline bool __is_extent_mergeable(struct extent_info
*back
,
477 struct extent_info
*front
)
479 return (back
->fofs
+ back
->len
== front
->fofs
&&
480 back
->blk
+ back
->len
== front
->blk
);
483 static inline bool __is_back_mergeable(struct extent_info
*cur
,
484 struct extent_info
*back
)
486 return __is_extent_mergeable(back
, cur
);
489 static inline bool __is_front_mergeable(struct extent_info
*cur
,
490 struct extent_info
*front
)
492 return __is_extent_mergeable(cur
, front
);
495 struct f2fs_nm_info
{
496 block_t nat_blkaddr
; /* base disk address of NAT */
497 nid_t max_nid
; /* maximum possible node ids */
498 nid_t available_nids
; /* maximum available node ids */
499 nid_t next_scan_nid
; /* the next nid to be scanned */
500 unsigned int ram_thresh
; /* control the memory footprint */
502 /* NAT cache management */
503 struct radix_tree_root nat_root
;/* root of the nat entry cache */
504 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
505 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
506 struct list_head nat_entries
; /* cached nat entry list (clean) */
507 unsigned int nat_cnt
; /* the # of cached nat entries */
508 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
510 /* free node ids management */
511 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
512 struct list_head free_nid_list
; /* a list for free nids */
513 spinlock_t free_nid_list_lock
; /* protect free nid list */
514 unsigned int fcnt
; /* the number of free node id */
515 struct mutex build_lock
; /* lock for build free nids */
518 char *nat_bitmap
; /* NAT bitmap pointer */
519 int bitmap_size
; /* bitmap size */
523 * this structure is used as one of function parameters.
524 * all the information are dedicated to a given direct node block determined
525 * by the data offset in a file.
527 struct dnode_of_data
{
528 struct inode
*inode
; /* vfs inode pointer */
529 struct page
*inode_page
; /* its inode page, NULL is possible */
530 struct page
*node_page
; /* cached direct node page */
531 nid_t nid
; /* node id of the direct node block */
532 unsigned int ofs_in_node
; /* data offset in the node page */
533 bool inode_page_locked
; /* inode page is locked or not */
534 block_t data_blkaddr
; /* block address of the node block */
537 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
538 struct page
*ipage
, struct page
*npage
, nid_t nid
)
540 memset(dn
, 0, sizeof(*dn
));
542 dn
->inode_page
= ipage
;
543 dn
->node_page
= npage
;
550 * By default, there are 6 active log areas across the whole main area.
551 * When considering hot and cold data separation to reduce cleaning overhead,
552 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
554 * In the current design, you should not change the numbers intentionally.
555 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
556 * logs individually according to the underlying devices. (default: 6)
557 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
558 * data and 8 for node logs.
560 #define NR_CURSEG_DATA_TYPE (3)
561 #define NR_CURSEG_NODE_TYPE (3)
562 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
565 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
566 CURSEG_WARM_DATA
, /* data blocks */
567 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
568 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
569 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
570 CURSEG_COLD_NODE
, /* indirect node blocks */
572 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
576 struct completion wait
;
577 struct llist_node llnode
;
581 struct flush_cmd_control
{
582 struct task_struct
*f2fs_issue_flush
; /* flush thread */
583 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
584 struct llist_head issue_list
; /* list for command issue */
585 struct llist_node
*dispatch_list
; /* list for command dispatch */
588 struct f2fs_sm_info
{
589 struct sit_info
*sit_info
; /* whole segment information */
590 struct free_segmap_info
*free_info
; /* free segment information */
591 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
592 struct curseg_info
*curseg_array
; /* active segment information */
594 block_t seg0_blkaddr
; /* block address of 0'th segment */
595 block_t main_blkaddr
; /* start block address of main area */
596 block_t ssa_blkaddr
; /* start block address of SSA area */
598 unsigned int segment_count
; /* total # of segments */
599 unsigned int main_segments
; /* # of segments in main area */
600 unsigned int reserved_segments
; /* # of reserved segments */
601 unsigned int ovp_segments
; /* # of overprovision segments */
603 /* a threshold to reclaim prefree segments */
604 unsigned int rec_prefree_segments
;
606 /* for small discard management */
607 struct list_head discard_list
; /* 4KB discard list */
608 int nr_discards
; /* # of discards in the list */
609 int max_discards
; /* max. discards to be issued */
611 /* for batched trimming */
612 unsigned int trim_sections
; /* # of sections to trim */
614 struct list_head sit_entry_set
; /* sit entry set list */
616 unsigned int ipu_policy
; /* in-place-update policy */
617 unsigned int min_ipu_util
; /* in-place-update threshold */
618 unsigned int min_fsync_blocks
; /* threshold for fsync */
620 /* for flush command control */
621 struct flush_cmd_control
*cmd_control_info
;
629 * COUNT_TYPE for monitoring
631 * f2fs monitors the number of several block types such as on-writeback,
632 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
644 * The below are the page types of bios used in submit_bio().
645 * The available types are:
646 * DATA User data pages. It operates as async mode.
647 * NODE Node pages. It operates as async mode.
648 * META FS metadata pages such as SIT, NAT, CP.
649 * NR_PAGE_TYPE The number of page types.
650 * META_FLUSH Make sure the previous pages are written
651 * with waiting the bio's completion
652 * ... Only can be used with META.
654 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
661 INMEM
, /* the below types are used by tracepoints only. */
667 struct f2fs_io_info
{
668 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
669 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
670 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
671 block_t blk_addr
; /* block address to be written */
672 struct page
*page
; /* page to be written */
673 struct page
*encrypted_page
; /* encrypted page */
676 #define is_read_io(rw) (((rw) & 1) == READ)
677 struct f2fs_bio_info
{
678 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
679 struct bio
*bio
; /* bios to merge */
680 sector_t last_block_in_bio
; /* last block number */
681 struct f2fs_io_info fio
; /* store buffered io info. */
682 struct rw_semaphore io_rwsem
; /* blocking op for bio */
685 /* for inner inode cache management */
686 struct inode_management
{
687 struct radix_tree_root ino_root
; /* ino entry array */
688 spinlock_t ino_lock
; /* for ino entry lock */
689 struct list_head ino_list
; /* inode list head */
690 unsigned long ino_num
; /* number of entries */
693 /* For s_flag in struct f2fs_sb_info */
695 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
696 SBI_IS_CLOSE
, /* specify unmounting */
697 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
698 SBI_POR_DOING
, /* recovery is doing or not */
701 struct f2fs_sb_info
{
702 struct super_block
*sb
; /* pointer to VFS super block */
703 struct proc_dir_entry
*s_proc
; /* proc entry */
704 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
705 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
706 int s_flag
; /* flags for sbi */
708 /* for node-related operations */
709 struct f2fs_nm_info
*nm_info
; /* node manager */
710 struct inode
*node_inode
; /* cache node blocks */
712 /* for segment-related operations */
713 struct f2fs_sm_info
*sm_info
; /* segment manager */
715 /* for bio operations */
716 struct f2fs_bio_info read_io
; /* for read bios */
717 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
720 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
721 struct inode
*meta_inode
; /* cache meta blocks */
722 struct mutex cp_mutex
; /* checkpoint procedure lock */
723 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
724 struct rw_semaphore node_write
; /* locking node writes */
725 struct mutex writepages
; /* mutex for writepages() */
726 wait_queue_head_t cp_wait
;
728 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
730 /* for orphan inode, use 0'th array */
731 unsigned int max_orphans
; /* max orphan inodes */
733 /* for directory inode management */
734 struct list_head dir_inode_list
; /* dir inode list */
735 spinlock_t dir_inode_lock
; /* for dir inode list lock */
737 /* for extent tree cache */
738 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
739 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
740 struct list_head extent_list
; /* lru list for shrinker */
741 spinlock_t extent_lock
; /* locking extent lru list */
742 int total_ext_tree
; /* extent tree count */
743 atomic_t total_ext_node
; /* extent info count */
745 /* basic filesystem units */
746 unsigned int log_sectors_per_block
; /* log2 sectors per block */
747 unsigned int log_blocksize
; /* log2 block size */
748 unsigned int blocksize
; /* block size */
749 unsigned int root_ino_num
; /* root inode number*/
750 unsigned int node_ino_num
; /* node inode number*/
751 unsigned int meta_ino_num
; /* meta inode number*/
752 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
753 unsigned int blocks_per_seg
; /* blocks per segment */
754 unsigned int segs_per_sec
; /* segments per section */
755 unsigned int secs_per_zone
; /* sections per zone */
756 unsigned int total_sections
; /* total section count */
757 unsigned int total_node_count
; /* total node block count */
758 unsigned int total_valid_node_count
; /* valid node block count */
759 unsigned int total_valid_inode_count
; /* valid inode count */
760 int active_logs
; /* # of active logs */
761 int dir_level
; /* directory level */
763 block_t user_block_count
; /* # of user blocks */
764 block_t total_valid_block_count
; /* # of valid blocks */
765 block_t alloc_valid_block_count
; /* # of allocated blocks */
766 block_t discard_blks
; /* discard command candidats */
767 block_t last_valid_block_count
; /* for recovery */
768 u32 s_next_generation
; /* for NFS support */
769 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
771 struct f2fs_mount_info mount_opt
; /* mount options */
773 /* for cleaning operations */
774 struct mutex gc_mutex
; /* mutex for GC */
775 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
776 unsigned int cur_victim_sec
; /* current victim section num */
778 /* maximum # of trials to find a victim segment for SSR and GC */
779 unsigned int max_victim_search
;
782 * for stat information.
783 * one is for the LFS mode, and the other is for the SSR mode.
785 #ifdef CONFIG_F2FS_STAT_FS
786 struct f2fs_stat_info
*stat_info
; /* FS status information */
787 unsigned int segment_count
[2]; /* # of allocated segments */
788 unsigned int block_count
[2]; /* # of allocated blocks */
789 atomic_t inplace_count
; /* # of inplace update */
790 atomic_t total_hit_ext
; /* # of lookup extent cache */
791 atomic_t read_hit_rbtree
; /* # of hit rbtree extent node */
792 atomic_t read_hit_largest
; /* # of hit largest extent node */
793 atomic_t read_hit_cached
; /* # of hit cached extent node */
794 atomic_t inline_xattr
; /* # of inline_xattr inodes */
795 atomic_t inline_inode
; /* # of inline_data inodes */
796 atomic_t inline_dir
; /* # of inline_dentry inodes */
797 int bg_gc
; /* background gc calls */
798 unsigned int n_dirty_dirs
; /* # of dir inodes */
800 unsigned int last_victim
[2]; /* last victim segment # */
801 spinlock_t stat_lock
; /* lock for stat operations */
803 /* For sysfs suppport */
804 struct kobject s_kobj
;
805 struct completion s_kobj_unregister
;
807 /* For shrinker support */
808 struct list_head s_list
;
809 struct mutex umount_mutex
;
810 unsigned int shrinker_run_no
;
816 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
818 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
821 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
823 return sb
->s_fs_info
;
826 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
828 return F2FS_SB(inode
->i_sb
);
831 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
833 return F2FS_I_SB(mapping
->host
);
836 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
838 return F2FS_M_SB(page
->mapping
);
841 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
843 return (struct f2fs_super_block
*)(sbi
->raw_super
);
846 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
848 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
851 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
853 return (struct f2fs_node
*)page_address(page
);
856 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
858 return &((struct f2fs_node
*)page_address(page
))->i
;
861 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
863 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
866 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
868 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
871 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
873 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
876 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
878 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
881 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
883 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
886 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
888 return sbi
->meta_inode
->i_mapping
;
891 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
893 return sbi
->node_inode
->i_mapping
;
896 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
898 return sbi
->s_flag
& (0x01 << type
);
901 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
903 sbi
->s_flag
|= (0x01 << type
);
906 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
908 sbi
->s_flag
&= ~(0x01 << type
);
911 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
913 return le64_to_cpu(cp
->checkpoint_ver
);
916 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
918 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
919 return ckpt_flags
& f
;
922 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
924 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
926 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
929 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
931 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
933 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
936 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
938 down_read(&sbi
->cp_rwsem
);
941 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
943 up_read(&sbi
->cp_rwsem
);
946 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
948 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
951 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
953 up_write(&sbi
->cp_rwsem
);
956 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
958 int reason
= CP_SYNC
;
960 if (test_opt(sbi
, FASTBOOT
))
961 reason
= CP_FASTBOOT
;
962 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
967 static inline bool __remain_node_summaries(int reason
)
969 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
972 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
974 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
975 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
979 * Check whether the given nid is within node id range.
981 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
983 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
985 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
990 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
993 * Check whether the inode has blocks or not
995 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
997 if (F2FS_I(inode
)->i_xattr_nid
)
998 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1000 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1003 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1005 return ofs
== XATTR_NODE_OFFSET
;
1008 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1009 struct inode
*inode
, blkcnt_t count
)
1011 block_t valid_block_count
;
1013 spin_lock(&sbi
->stat_lock
);
1015 sbi
->total_valid_block_count
+ (block_t
)count
;
1016 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1017 spin_unlock(&sbi
->stat_lock
);
1020 inode
->i_blocks
+= count
;
1021 sbi
->total_valid_block_count
= valid_block_count
;
1022 sbi
->alloc_valid_block_count
+= (block_t
)count
;
1023 spin_unlock(&sbi
->stat_lock
);
1027 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1028 struct inode
*inode
,
1031 spin_lock(&sbi
->stat_lock
);
1032 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1033 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1034 inode
->i_blocks
-= count
;
1035 sbi
->total_valid_block_count
-= (block_t
)count
;
1036 spin_unlock(&sbi
->stat_lock
);
1039 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1041 atomic_inc(&sbi
->nr_pages
[count_type
]);
1042 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1045 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1047 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
1048 if (S_ISDIR(inode
->i_mode
))
1049 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
1052 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1054 atomic_dec(&sbi
->nr_pages
[count_type
]);
1057 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1059 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1060 !S_ISLNK(inode
->i_mode
))
1063 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
1065 if (S_ISDIR(inode
->i_mode
))
1066 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
1069 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1071 return atomic_read(&sbi
->nr_pages
[count_type
]);
1074 static inline int get_dirty_pages(struct inode
*inode
)
1076 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
1079 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1081 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
1082 (1 << sbi
->log_blocks_per_seg
);
1083 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
1084 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
1087 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1089 return sbi
->total_valid_block_count
;
1092 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1094 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1096 /* return NAT or SIT bitmap */
1097 if (flag
== NAT_BITMAP
)
1098 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1099 else if (flag
== SIT_BITMAP
)
1100 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1105 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1107 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1110 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1112 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1115 if (__cp_payload(sbi
) > 0) {
1116 if (flag
== NAT_BITMAP
)
1117 return &ckpt
->sit_nat_version_bitmap
;
1119 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1121 offset
= (flag
== NAT_BITMAP
) ?
1122 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1123 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1127 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1130 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1131 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1133 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1136 * odd numbered checkpoint should at cp segment 0
1137 * and even segment must be at cp segment 1
1139 if (!(ckpt_version
& 1))
1140 start_addr
+= sbi
->blocks_per_seg
;
1145 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1147 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1150 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1151 struct inode
*inode
)
1153 block_t valid_block_count
;
1154 unsigned int valid_node_count
;
1156 spin_lock(&sbi
->stat_lock
);
1158 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1159 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1160 spin_unlock(&sbi
->stat_lock
);
1164 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1165 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1166 spin_unlock(&sbi
->stat_lock
);
1173 sbi
->alloc_valid_block_count
++;
1174 sbi
->total_valid_node_count
++;
1175 sbi
->total_valid_block_count
++;
1176 spin_unlock(&sbi
->stat_lock
);
1181 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1182 struct inode
*inode
)
1184 spin_lock(&sbi
->stat_lock
);
1186 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1187 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1188 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1191 sbi
->total_valid_node_count
--;
1192 sbi
->total_valid_block_count
--;
1194 spin_unlock(&sbi
->stat_lock
);
1197 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1199 return sbi
->total_valid_node_count
;
1202 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1204 spin_lock(&sbi
->stat_lock
);
1205 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1206 sbi
->total_valid_inode_count
++;
1207 spin_unlock(&sbi
->stat_lock
);
1210 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1212 spin_lock(&sbi
->stat_lock
);
1213 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1214 sbi
->total_valid_inode_count
--;
1215 spin_unlock(&sbi
->stat_lock
);
1218 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1220 return sbi
->total_valid_inode_count
;
1223 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1229 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1232 page_cache_release(page
);
1235 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1238 f2fs_put_page(dn
->node_page
, 1);
1239 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1240 f2fs_put_page(dn
->inode_page
, 0);
1241 dn
->node_page
= NULL
;
1242 dn
->inode_page
= NULL
;
1245 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1248 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1251 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1256 entry
= kmem_cache_alloc(cachep
, flags
);
1258 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1262 static inline struct bio
*f2fs_bio_alloc(int npages
)
1266 /* No failure on bio allocation */
1267 bio
= bio_alloc(GFP_NOIO
, npages
);
1269 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1273 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1274 unsigned long index
, void *item
)
1276 while (radix_tree_insert(root
, index
, item
))
1280 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1282 static inline bool IS_INODE(struct page
*page
)
1284 struct f2fs_node
*p
= F2FS_NODE(page
);
1285 return RAW_IS_INODE(p
);
1288 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1290 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1293 static inline block_t
datablock_addr(struct page
*node_page
,
1294 unsigned int offset
)
1296 struct f2fs_node
*raw_node
;
1298 raw_node
= F2FS_NODE(node_page
);
1299 addr_array
= blkaddr_in_node(raw_node
);
1300 return le32_to_cpu(addr_array
[offset
]);
1303 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1308 mask
= 1 << (7 - (nr
& 0x07));
1309 return mask
& *addr
;
1312 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1317 mask
= 1 << (7 - (nr
& 0x07));
1321 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1326 mask
= 1 << (7 - (nr
& 0x07));
1330 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1336 mask
= 1 << (7 - (nr
& 0x07));
1342 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1348 mask
= 1 << (7 - (nr
& 0x07));
1354 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1359 mask
= 1 << (7 - (nr
& 0x07));
1363 /* used for f2fs_inode_info->flags */
1365 FI_NEW_INODE
, /* indicate newly allocated inode */
1366 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1367 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1368 FI_INC_LINK
, /* need to increment i_nlink */
1369 FI_ACL_MODE
, /* indicate acl mode */
1370 FI_NO_ALLOC
, /* should not allocate any blocks */
1371 FI_FREE_NID
, /* free allocated nide */
1372 FI_UPDATE_DIR
, /* should update inode block for consistency */
1373 FI_DELAY_IPUT
, /* used for the recovery */
1374 FI_NO_EXTENT
, /* not to use the extent cache */
1375 FI_INLINE_XATTR
, /* used for inline xattr */
1376 FI_INLINE_DATA
, /* used for inline data*/
1377 FI_INLINE_DENTRY
, /* used for inline dentry */
1378 FI_APPEND_WRITE
, /* inode has appended data */
1379 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1380 FI_NEED_IPU
, /* used for ipu per file */
1381 FI_ATOMIC_FILE
, /* indicate atomic file */
1382 FI_VOLATILE_FILE
, /* indicate volatile file */
1383 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1384 FI_DROP_CACHE
, /* drop dirty page cache */
1385 FI_DATA_EXIST
, /* indicate data exists */
1386 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1389 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1391 if (!test_bit(flag
, &fi
->flags
))
1392 set_bit(flag
, &fi
->flags
);
1395 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1397 return test_bit(flag
, &fi
->flags
);
1400 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1402 if (test_bit(flag
, &fi
->flags
))
1403 clear_bit(flag
, &fi
->flags
);
1406 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1408 fi
->i_acl_mode
= mode
;
1409 set_inode_flag(fi
, FI_ACL_MODE
);
1412 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1413 struct f2fs_inode
*ri
)
1415 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1416 set_inode_flag(fi
, FI_INLINE_XATTR
);
1417 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1418 set_inode_flag(fi
, FI_INLINE_DATA
);
1419 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1420 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1421 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1422 set_inode_flag(fi
, FI_DATA_EXIST
);
1423 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1424 set_inode_flag(fi
, FI_INLINE_DOTS
);
1427 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1428 struct f2fs_inode
*ri
)
1432 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1433 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1434 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1435 ri
->i_inline
|= F2FS_INLINE_DATA
;
1436 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1437 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1438 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1439 ri
->i_inline
|= F2FS_DATA_EXIST
;
1440 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1441 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1444 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1446 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1449 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1451 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1452 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1453 return DEF_ADDRS_PER_INODE
;
1456 static inline void *inline_xattr_addr(struct page
*page
)
1458 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1459 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1460 F2FS_INLINE_XATTR_ADDRS
]);
1463 static inline int inline_xattr_size(struct inode
*inode
)
1465 if (f2fs_has_inline_xattr(inode
))
1466 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1471 static inline int f2fs_has_inline_data(struct inode
*inode
)
1473 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1476 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1478 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1479 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1482 static inline int f2fs_exist_data(struct inode
*inode
)
1484 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1487 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1489 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1492 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1494 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1497 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1499 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1502 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1504 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1507 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1509 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1512 static inline void *inline_data_addr(struct page
*page
)
1514 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1515 return (void *)&(ri
->i_addr
[1]);
1518 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1520 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1523 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1525 if (!f2fs_has_inline_dentry(dir
))
1529 static inline int is_file(struct inode
*inode
, int type
)
1531 return F2FS_I(inode
)->i_advise
& type
;
1534 static inline void set_file(struct inode
*inode
, int type
)
1536 F2FS_I(inode
)->i_advise
|= type
;
1539 static inline void clear_file(struct inode
*inode
, int type
)
1541 F2FS_I(inode
)->i_advise
&= ~type
;
1544 static inline int f2fs_readonly(struct super_block
*sb
)
1546 return sb
->s_flags
& MS_RDONLY
;
1549 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1551 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1554 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1556 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1557 sbi
->sb
->s_flags
|= MS_RDONLY
;
1560 static inline bool is_dot_dotdot(const struct qstr
*str
)
1562 if (str
->len
== 1 && str
->name
[0] == '.')
1565 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1571 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1573 mode_t mode
= inode
->i_mode
;
1575 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1576 is_inode_flag_set(F2FS_I(inode
), FI_NO_EXTENT
))
1579 return S_ISREG(mode
);
1582 #define get_inode_mode(i) \
1583 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1584 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1586 /* get offset of first page in next direct node */
1587 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1588 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1589 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1590 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1595 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1596 void truncate_data_blocks(struct dnode_of_data
*);
1597 int truncate_blocks(struct inode
*, u64
, bool);
1598 int f2fs_truncate(struct inode
*, bool);
1599 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1600 int f2fs_setattr(struct dentry
*, struct iattr
*);
1601 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1602 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1603 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1604 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1609 void f2fs_set_inode_flags(struct inode
*);
1610 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1611 int try_to_free_nats(struct f2fs_sb_info
*, int);
1612 void update_inode(struct inode
*, struct page
*);
1613 void update_inode_page(struct inode
*);
1614 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1615 void f2fs_evict_inode(struct inode
*);
1616 void handle_failed_inode(struct inode
*);
1621 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1626 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1627 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1629 struct f2fs_dir_entry
*find_target_dentry(struct f2fs_filename
*,
1630 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1631 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1632 unsigned int, struct f2fs_str
*);
1633 void do_make_empty_dir(struct inode
*, struct inode
*,
1634 struct f2fs_dentry_ptr
*);
1635 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1636 const struct qstr
*, struct page
*);
1637 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1638 int room_for_filename(const void *, int, int);
1639 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1640 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1642 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1643 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1644 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1645 struct page
*, struct inode
*);
1646 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1647 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1648 const struct qstr
*, f2fs_hash_t
, unsigned int);
1649 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1651 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1653 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1654 bool f2fs_empty_dir(struct inode
*);
1656 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1658 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1659 inode
, inode
->i_ino
, inode
->i_mode
);
1665 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1666 int f2fs_sync_fs(struct super_block
*, int);
1667 extern __printf(3, 4)
1668 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1673 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1678 struct dnode_of_data
;
1681 bool available_free_memory(struct f2fs_sb_info
*, int);
1682 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1683 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1684 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1685 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1686 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1687 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1688 int truncate_xattr_node(struct inode
*, struct page
*);
1689 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1690 int remove_inode_page(struct inode
*);
1691 struct page
*new_inode_page(struct inode
*);
1692 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1693 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1694 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1695 struct page
*get_node_page_ra(struct page
*, int);
1696 void sync_inode_page(struct dnode_of_data
*);
1697 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1698 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1699 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1700 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1701 int try_to_free_nids(struct f2fs_sb_info
*, int);
1702 void recover_inline_xattr(struct inode
*, struct page
*);
1703 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1704 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1705 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1706 struct f2fs_summary_block
*);
1707 void flush_nat_entries(struct f2fs_sb_info
*);
1708 int build_node_manager(struct f2fs_sb_info
*);
1709 void destroy_node_manager(struct f2fs_sb_info
*);
1710 int __init
create_node_manager_caches(void);
1711 void destroy_node_manager_caches(void);
1716 void register_inmem_page(struct inode
*, struct page
*);
1717 int commit_inmem_pages(struct inode
*, bool);
1718 void f2fs_balance_fs(struct f2fs_sb_info
*);
1719 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1720 int f2fs_issue_flush(struct f2fs_sb_info
*);
1721 int create_flush_cmd_control(struct f2fs_sb_info
*);
1722 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1723 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1724 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1725 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1726 void release_discard_addrs(struct f2fs_sb_info
*);
1727 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1728 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1729 void allocate_new_segments(struct f2fs_sb_info
*);
1730 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1731 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1732 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1733 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1734 void write_node_page(unsigned int, struct f2fs_io_info
*);
1735 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1736 void rewrite_data_page(struct f2fs_io_info
*);
1737 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
1738 block_t
, block_t
, unsigned char, bool);
1739 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1740 block_t
, block_t
*, struct f2fs_summary
*, int);
1741 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1742 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1743 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1744 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1745 int, unsigned int, int);
1746 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1747 int build_segment_manager(struct f2fs_sb_info
*);
1748 void destroy_segment_manager(struct f2fs_sb_info
*);
1749 int __init
create_segment_manager_caches(void);
1750 void destroy_segment_manager_caches(void);
1755 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1756 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1757 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
1758 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1759 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1760 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1761 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1762 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1763 void release_dirty_inode(struct f2fs_sb_info
*);
1764 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1765 int acquire_orphan_inode(struct f2fs_sb_info
*);
1766 void release_orphan_inode(struct f2fs_sb_info
*);
1767 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1768 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1769 int recover_orphan_inodes(struct f2fs_sb_info
*);
1770 int get_valid_checkpoint(struct f2fs_sb_info
*);
1771 void update_dirty_page(struct inode
*, struct page
*);
1772 void add_dirty_dir_inode(struct inode
*);
1773 void remove_dirty_dir_inode(struct inode
*);
1774 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1775 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1776 void init_ino_entry_info(struct f2fs_sb_info
*);
1777 int __init
create_checkpoint_caches(void);
1778 void destroy_checkpoint_caches(void);
1783 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1784 int f2fs_submit_page_bio(struct f2fs_io_info
*);
1785 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
1786 void set_data_blkaddr(struct dnode_of_data
*);
1787 int reserve_new_block(struct dnode_of_data
*);
1788 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
1789 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1790 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int);
1791 struct page
*find_data_page(struct inode
*, pgoff_t
);
1792 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1793 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1794 int do_write_data_page(struct f2fs_io_info
*);
1795 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1796 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1797 int f2fs_release_page(struct page
*, gfp_t
);
1802 int start_gc_thread(struct f2fs_sb_info
*);
1803 void stop_gc_thread(struct f2fs_sb_info
*);
1804 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1805 int f2fs_gc(struct f2fs_sb_info
*);
1806 void build_gc_manager(struct f2fs_sb_info
*);
1811 int recover_fsync_data(struct f2fs_sb_info
*);
1812 bool space_for_roll_forward(struct f2fs_sb_info
*);
1817 #ifdef CONFIG_F2FS_STAT_FS
1818 struct f2fs_stat_info
{
1819 struct list_head stat_list
;
1820 struct f2fs_sb_info
*sbi
;
1821 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1822 int main_area_segs
, main_area_sections
, main_area_zones
;
1823 int hit_largest
, hit_cached
, hit_rbtree
, hit_total
, total_ext
;
1824 int ext_tree
, ext_node
;
1825 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1826 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1827 int total_count
, utilization
;
1828 int bg_gc
, inmem_pages
, wb_pages
;
1829 int inline_xattr
, inline_inode
, inline_dir
;
1830 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1831 unsigned int bimodal
, avg_vblocks
;
1832 int util_free
, util_valid
, util_invalid
;
1833 int rsvd_segs
, overp_segs
;
1834 int dirty_count
, node_pages
, meta_pages
;
1835 int prefree_count
, call_count
, cp_count
;
1836 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1837 int bg_node_segs
, bg_data_segs
;
1838 int tot_blks
, data_blks
, node_blks
;
1839 int bg_data_blks
, bg_node_blks
;
1840 int curseg
[NR_CURSEG_TYPE
];
1841 int cursec
[NR_CURSEG_TYPE
];
1842 int curzone
[NR_CURSEG_TYPE
];
1844 unsigned int segment_count
[2];
1845 unsigned int block_count
[2];
1846 unsigned int inplace_count
;
1847 unsigned base_mem
, cache_mem
, page_mem
;
1850 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1852 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1855 #define stat_inc_cp_count(si) ((si)->cp_count++)
1856 #define stat_inc_call_count(si) ((si)->call_count++)
1857 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1858 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1859 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1860 #define stat_inc_total_hit(sbi) (atomic_inc(&(sbi)->total_hit_ext))
1861 #define stat_inc_rbtree_node_hit(sbi) (atomic_inc(&(sbi)->read_hit_rbtree))
1862 #define stat_inc_largest_node_hit(sbi) (atomic_inc(&(sbi)->read_hit_largest))
1863 #define stat_inc_cached_node_hit(sbi) (atomic_inc(&(sbi)->read_hit_cached))
1864 #define stat_inc_inline_xattr(inode) \
1866 if (f2fs_has_inline_xattr(inode)) \
1867 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1869 #define stat_dec_inline_xattr(inode) \
1871 if (f2fs_has_inline_xattr(inode)) \
1872 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1874 #define stat_inc_inline_inode(inode) \
1876 if (f2fs_has_inline_data(inode)) \
1877 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1879 #define stat_dec_inline_inode(inode) \
1881 if (f2fs_has_inline_data(inode)) \
1882 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1884 #define stat_inc_inline_dir(inode) \
1886 if (f2fs_has_inline_dentry(inode)) \
1887 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1889 #define stat_dec_inline_dir(inode) \
1891 if (f2fs_has_inline_dentry(inode)) \
1892 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1894 #define stat_inc_seg_type(sbi, curseg) \
1895 ((sbi)->segment_count[(curseg)->alloc_type]++)
1896 #define stat_inc_block_count(sbi, curseg) \
1897 ((sbi)->block_count[(curseg)->alloc_type]++)
1898 #define stat_inc_inplace_blocks(sbi) \
1899 (atomic_inc(&(sbi)->inplace_count))
1900 #define stat_inc_seg_count(sbi, type, gc_type) \
1902 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1904 if (type == SUM_TYPE_DATA) { \
1906 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1909 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1913 #define stat_inc_tot_blk_count(si, blks) \
1914 (si->tot_blks += (blks))
1916 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
1918 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1919 stat_inc_tot_blk_count(si, blks); \
1920 si->data_blks += (blks); \
1921 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
1924 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
1926 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1927 stat_inc_tot_blk_count(si, blks); \
1928 si->node_blks += (blks); \
1929 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
1932 int f2fs_build_stats(struct f2fs_sb_info
*);
1933 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1934 void __init
f2fs_create_root_stats(void);
1935 void f2fs_destroy_root_stats(void);
1937 #define stat_inc_cp_count(si)
1938 #define stat_inc_call_count(si)
1939 #define stat_inc_bggc_count(si)
1940 #define stat_inc_dirty_dir(sbi)
1941 #define stat_dec_dirty_dir(sbi)
1942 #define stat_inc_total_hit(sb)
1943 #define stat_inc_rbtree_node_hit(sb)
1944 #define stat_inc_largest_node_hit(sbi)
1945 #define stat_inc_cached_node_hit(sbi)
1946 #define stat_inc_inline_xattr(inode)
1947 #define stat_dec_inline_xattr(inode)
1948 #define stat_inc_inline_inode(inode)
1949 #define stat_dec_inline_inode(inode)
1950 #define stat_inc_inline_dir(inode)
1951 #define stat_dec_inline_dir(inode)
1952 #define stat_inc_seg_type(sbi, curseg)
1953 #define stat_inc_block_count(sbi, curseg)
1954 #define stat_inc_inplace_blocks(sbi)
1955 #define stat_inc_seg_count(sbi, type, gc_type)
1956 #define stat_inc_tot_blk_count(si, blks)
1957 #define stat_inc_data_blk_count(sbi, blks, gc_type)
1958 #define stat_inc_node_blk_count(sbi, blks, gc_type)
1960 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1961 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1962 static inline void __init
f2fs_create_root_stats(void) { }
1963 static inline void f2fs_destroy_root_stats(void) { }
1966 extern const struct file_operations f2fs_dir_operations
;
1967 extern const struct file_operations f2fs_file_operations
;
1968 extern const struct inode_operations f2fs_file_inode_operations
;
1969 extern const struct address_space_operations f2fs_dblock_aops
;
1970 extern const struct address_space_operations f2fs_node_aops
;
1971 extern const struct address_space_operations f2fs_meta_aops
;
1972 extern const struct inode_operations f2fs_dir_inode_operations
;
1973 extern const struct inode_operations f2fs_symlink_inode_operations
;
1974 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
1975 extern const struct inode_operations f2fs_special_inode_operations
;
1976 extern struct kmem_cache
*inode_entry_slab
;
1981 bool f2fs_may_inline_data(struct inode
*);
1982 bool f2fs_may_inline_dentry(struct inode
*);
1983 void read_inline_data(struct page
*, struct page
*);
1984 bool truncate_inline_inode(struct page
*, u64
);
1985 int f2fs_read_inline_data(struct inode
*, struct page
*);
1986 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
1987 int f2fs_convert_inline_inode(struct inode
*);
1988 int f2fs_write_inline_data(struct inode
*, struct page
*);
1989 bool recover_inline_data(struct inode
*, struct page
*);
1990 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
1991 struct f2fs_filename
*, struct page
**);
1992 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
1993 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
1994 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
1996 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
1997 struct inode
*, struct inode
*);
1998 bool f2fs_empty_inline_dir(struct inode
*);
1999 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2005 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2006 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2007 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2008 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2013 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2014 void f2fs_drop_largest_extent(struct inode
*, pgoff_t
);
2015 void f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2016 unsigned int f2fs_destroy_extent_node(struct inode
*);
2017 void f2fs_destroy_extent_tree(struct inode
*);
2018 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2019 void f2fs_update_extent_cache(struct dnode_of_data
*);
2020 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2021 pgoff_t
, block_t
, unsigned int);
2022 void init_extent_cache_info(struct f2fs_sb_info
*);
2023 int __init
create_extent_cache(void);
2024 void destroy_extent_cache(void);
2029 static inline int f2fs_encrypted_inode(struct inode
*inode
)
2031 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2032 return file_is_encrypt(inode
);
2038 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2040 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2041 file_set_encrypt(inode
);
2045 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2047 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2048 return unlikely(bio
->bi_private
!= NULL
);
2054 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2056 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2057 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2063 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2065 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2066 mode_t mode
= inode
->i_mode
;
2068 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2074 /* crypto_policy.c */
2075 int f2fs_is_child_context_consistent_with_parent(struct inode
*,
2077 int f2fs_inherit_context(struct inode
*, struct inode
*, struct page
*);
2078 int f2fs_process_policy(const struct f2fs_encryption_policy
*, struct inode
*);
2079 int f2fs_get_policy(struct inode
*, struct f2fs_encryption_policy
*);
2082 extern struct kmem_cache
*f2fs_crypt_info_cachep
;
2083 bool f2fs_valid_contents_enc_mode(uint32_t);
2084 uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2085 struct f2fs_crypto_ctx
*f2fs_get_crypto_ctx(struct inode
*);
2086 void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx
*);
2087 struct page
*f2fs_encrypt(struct inode
*, struct page
*);
2088 int f2fs_decrypt(struct f2fs_crypto_ctx
*, struct page
*);
2089 int f2fs_decrypt_one(struct inode
*, struct page
*);
2090 void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx
*, struct bio
*);
2093 void f2fs_free_encryption_info(struct inode
*, struct f2fs_crypt_info
*);
2094 int _f2fs_get_encryption_info(struct inode
*inode
);
2096 /* crypto_fname.c */
2097 bool f2fs_valid_filenames_enc_mode(uint32_t);
2098 u32
f2fs_fname_crypto_round_up(u32
, u32
);
2099 int f2fs_fname_crypto_alloc_buffer(struct inode
*, u32
, struct f2fs_str
*);
2100 int f2fs_fname_disk_to_usr(struct inode
*, f2fs_hash_t
*,
2101 const struct f2fs_str
*, struct f2fs_str
*);
2102 int f2fs_fname_usr_to_disk(struct inode
*, const struct qstr
*,
2105 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2106 void f2fs_restore_and_release_control_page(struct page
**);
2107 void f2fs_restore_control_page(struct page
*);
2109 int __init
f2fs_init_crypto(void);
2110 int f2fs_crypto_initialize(void);
2111 void f2fs_exit_crypto(void);
2113 int f2fs_has_encryption_key(struct inode
*);
2115 static inline int f2fs_get_encryption_info(struct inode
*inode
)
2117 struct f2fs_crypt_info
*ci
= F2FS_I(inode
)->i_crypt_info
;
2120 (ci
->ci_keyring_key
&&
2121 (ci
->ci_keyring_key
->flags
& ((1 << KEY_FLAG_INVALIDATED
) |
2122 (1 << KEY_FLAG_REVOKED
) |
2123 (1 << KEY_FLAG_DEAD
)))))
2124 return _f2fs_get_encryption_info(inode
);
2128 void f2fs_fname_crypto_free_buffer(struct f2fs_str
*);
2129 int f2fs_fname_setup_filename(struct inode
*, const struct qstr
*,
2130 int lookup
, struct f2fs_filename
*);
2131 void f2fs_fname_free_filename(struct f2fs_filename
*);
2133 static inline void f2fs_restore_and_release_control_page(struct page
**p
) { }
2134 static inline void f2fs_restore_control_page(struct page
*p
) { }
2136 static inline int __init
f2fs_init_crypto(void) { return 0; }
2137 static inline void f2fs_exit_crypto(void) { }
2139 static inline int f2fs_has_encryption_key(struct inode
*i
) { return 0; }
2140 static inline int f2fs_get_encryption_info(struct inode
*i
) { return 0; }
2141 static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str
*p
) { }
2143 static inline int f2fs_fname_setup_filename(struct inode
*dir
,
2144 const struct qstr
*iname
,
2145 int lookup
, struct f2fs_filename
*fname
)
2147 memset(fname
, 0, sizeof(struct f2fs_filename
));
2148 fname
->usr_fname
= iname
;
2149 fname
->disk_name
.name
= (unsigned char *)iname
->name
;
2150 fname
->disk_name
.len
= iname
->len
;
2154 static inline void f2fs_fname_free_filename(struct f2fs_filename
*fname
) { }