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>
23 #ifdef CONFIG_F2FS_CHECK_FS
24 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
25 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
27 #define f2fs_bug_on(sbi, condition) \
29 if (unlikely(condition)) { \
31 set_sbi_flag(sbi, SBI_NEED_FSCK); \
34 #define f2fs_down_write(x, y) down_write(x)
40 #define F2FS_MOUNT_BG_GC 0x00000001
41 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
42 #define F2FS_MOUNT_DISCARD 0x00000004
43 #define F2FS_MOUNT_NOHEAP 0x00000008
44 #define F2FS_MOUNT_XATTR_USER 0x00000010
45 #define F2FS_MOUNT_POSIX_ACL 0x00000020
46 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
47 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
48 #define F2FS_MOUNT_INLINE_DATA 0x00000100
49 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
50 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
51 #define F2FS_MOUNT_NOBARRIER 0x00000800
52 #define F2FS_MOUNT_FASTBOOT 0x00001000
53 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
55 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
56 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
57 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
59 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
60 typecheck(unsigned long long, b) && \
61 ((long long)((a) - (b)) > 0))
63 typedef u32 block_t
; /*
64 * should not change u32, since it is the on-disk block
65 * address format, __le32.
69 struct f2fs_mount_info
{
73 #define F2FS_FEATURE_ENCRYPT 0x0001
75 #define F2FS_HAS_FEATURE(sb, mask) \
76 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
77 #define F2FS_SET_FEATURE(sb, mask) \
78 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
79 #define F2FS_CLEAR_FEATURE(sb, mask) \
80 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
82 #define CRCPOLY_LE 0xedb88320
84 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
86 unsigned char *p
= (unsigned char *)buf
;
87 __u32 crc
= F2FS_SUPER_MAGIC
;
92 for (i
= 0; i
< 8; i
++)
93 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
98 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
100 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
104 * For checkpoint manager
119 #define DEF_BATCHED_TRIM_SECTIONS 32
120 #define BATCHED_TRIM_SEGMENTS(sbi) \
121 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
122 #define BATCHED_TRIM_BLOCKS(sbi) \
123 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
134 * For CP/NAT/SIT/SSA readahead
144 /* for the list of ino */
146 ORPHAN_INO
, /* for orphan ino list */
147 APPEND_INO
, /* for append ino list */
148 UPDATE_INO
, /* for update ino list */
149 MAX_INO_ENTRY
, /* max. list */
153 struct list_head list
; /* list head */
154 nid_t ino
; /* inode number */
158 * for the list of directory inodes or gc inodes.
159 * NOTE: there are two slab users for this structure, if we add/modify/delete
160 * fields in structure for one of slab users, it may affect fields or size of
161 * other one, in this condition, it's better to split both of slab and related
165 struct list_head list
; /* list head */
166 struct inode
*inode
; /* vfs inode pointer */
169 /* for the list of blockaddresses to be discarded */
170 struct discard_entry
{
171 struct list_head list
; /* list head */
172 block_t blkaddr
; /* block address to be discarded */
173 int len
; /* # of consecutive blocks of the discard */
176 /* for the list of fsync inodes, used only during recovery */
177 struct fsync_inode_entry
{
178 struct list_head list
; /* list head */
179 struct inode
*inode
; /* vfs inode pointer */
180 block_t blkaddr
; /* block address locating the last fsync */
181 block_t last_dentry
; /* block address locating the last dentry */
182 block_t last_inode
; /* block address locating the last inode */
185 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
186 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
188 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
189 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
190 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
191 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
193 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
194 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
196 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
198 int before
= nats_in_cursum(rs
);
199 rs
->n_nats
= cpu_to_le16(before
+ i
);
203 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
205 int before
= sits_in_cursum(rs
);
206 rs
->n_sits
= cpu_to_le16(before
+ i
);
210 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
213 if (type
== NAT_JOURNAL
)
214 return size
<= MAX_NAT_JENTRIES(sum
);
215 return size
<= MAX_SIT_JENTRIES(sum
);
221 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
222 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
223 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
225 #define F2FS_IOCTL_MAGIC 0xf5
226 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
227 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
228 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
229 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
230 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
231 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
233 #define F2FS_IOC_SET_ENCRYPTION_POLICY \
234 _IOR('f', 19, struct f2fs_encryption_policy)
235 #define F2FS_IOC_GET_ENCRYPTION_PWSALT \
236 _IOW('f', 20, __u8[16])
237 #define F2FS_IOC_GET_ENCRYPTION_POLICY \
238 _IOW('f', 21, struct f2fs_encryption_policy)
241 * should be same as XFS_IOC_GOINGDOWN.
242 * Flags for going down operation used by FS_IOC_GOINGDOWN
244 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
245 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
246 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
247 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
249 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
251 * ioctl commands in 32 bit emulation
253 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
254 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
258 * For INODE and NODE manager
260 /* for directory operations */
266 struct f2fs_filename
{
267 const struct qstr
*usr_fname
;
268 struct f2fs_str disk_name
;
270 #ifdef CONFIG_F2FS_FS_ENCRYPTION
271 struct f2fs_str crypto_buf
;
275 #define FSTR_INIT(n, l) { .name = n, .len = l }
276 #define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
277 #define fname_name(p) ((p)->disk_name.name)
278 #define fname_len(p) ((p)->disk_name.len)
280 struct f2fs_dentry_ptr
{
283 struct f2fs_dir_entry
*dentry
;
284 __u8 (*filename
)[F2FS_SLOT_LEN
];
288 static inline void make_dentry_ptr(struct inode
*inode
,
289 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
294 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
295 d
->max
= NR_DENTRY_IN_BLOCK
;
296 d
->bitmap
= &t
->dentry_bitmap
;
297 d
->dentry
= t
->dentry
;
298 d
->filename
= t
->filename
;
300 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
301 d
->max
= NR_INLINE_DENTRY
;
302 d
->bitmap
= &t
->dentry_bitmap
;
303 d
->dentry
= t
->dentry
;
304 d
->filename
= t
->filename
;
309 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
310 * as its node offset to distinguish from index node blocks.
311 * But some bits are used to mark the node block.
313 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
316 ALLOC_NODE
, /* allocate a new node page if needed */
317 LOOKUP_NODE
, /* look up a node without readahead */
319 * look up a node with readahead called
324 #define F2FS_LINK_MAX 32000 /* maximum link count per file */
326 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
328 /* vector size for gang look-up from extent cache that consists of radix tree */
329 #define EXT_TREE_VEC_SIZE 64
331 /* for in-memory extent cache entry */
332 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
334 /* number of extent info in extent cache we try to shrink */
335 #define EXTENT_CACHE_SHRINK_NUMBER 128
338 unsigned int fofs
; /* start offset in a file */
339 u32 blk
; /* start block address of the extent */
340 unsigned int len
; /* length of the extent */
344 struct rb_node rb_node
; /* rb node located in rb-tree */
345 struct list_head list
; /* node in global extent list of sbi */
346 struct extent_info ei
; /* extent info */
350 nid_t ino
; /* inode number */
351 struct rb_root root
; /* root of extent info rb-tree */
352 struct extent_node
*cached_en
; /* recently accessed extent node */
353 struct extent_info largest
; /* largested extent info */
354 rwlock_t lock
; /* protect extent info rb-tree */
355 atomic_t refcount
; /* reference count of rb-tree */
356 unsigned int count
; /* # of extent node in rb-tree*/
360 * This structure is taken from ext4_map_blocks.
362 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
364 #define F2FS_MAP_NEW (1 << BH_New)
365 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
366 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
367 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
370 struct f2fs_map_blocks
{
374 unsigned int m_flags
;
378 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
380 #define FADVISE_COLD_BIT 0x01
381 #define FADVISE_LOST_PINO_BIT 0x02
382 #define FADVISE_ENCRYPT_BIT 0x04
383 #define FADVISE_ENC_NAME_BIT 0x08
385 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
386 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
387 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
388 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
389 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
390 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
391 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
392 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
393 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
394 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
395 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
397 /* Encryption algorithms */
398 #define F2FS_ENCRYPTION_MODE_INVALID 0
399 #define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
400 #define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
401 #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
402 #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
404 #include "f2fs_crypto.h"
406 #define DEF_DIR_LEVEL 0
408 struct f2fs_inode_info
{
409 struct inode vfs_inode
; /* serve a vfs inode */
410 unsigned long i_flags
; /* keep an inode flags for ioctl */
411 unsigned char i_advise
; /* use to give file attribute hints */
412 unsigned char i_dir_level
; /* use for dentry level for large dir */
413 unsigned int i_current_depth
; /* use only in directory structure */
414 unsigned int i_pino
; /* parent inode number */
415 umode_t i_acl_mode
; /* keep file acl mode temporarily */
417 /* Use below internally in f2fs*/
418 unsigned long flags
; /* use to pass per-file flags */
419 struct rw_semaphore i_sem
; /* protect fi info */
420 atomic_t dirty_pages
; /* # of dirty pages */
421 f2fs_hash_t chash
; /* hash value of given file name */
422 unsigned int clevel
; /* maximum level of given file name */
423 nid_t i_xattr_nid
; /* node id that contains xattrs */
424 unsigned long long xattr_ver
; /* cp version of xattr modification */
425 struct inode_entry
*dirty_dir
; /* the pointer of dirty dir */
427 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
428 struct mutex inmem_lock
; /* lock for inmemory pages */
430 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
432 #ifdef CONFIG_F2FS_FS_ENCRYPTION
433 /* Encryption params */
434 struct f2fs_crypt_info
*i_crypt_info
;
438 static inline void get_extent_info(struct extent_info
*ext
,
439 struct f2fs_extent i_ext
)
441 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
442 ext
->blk
= le32_to_cpu(i_ext
.blk
);
443 ext
->len
= le32_to_cpu(i_ext
.len
);
446 static inline void set_raw_extent(struct extent_info
*ext
,
447 struct f2fs_extent
*i_ext
)
449 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
450 i_ext
->blk
= cpu_to_le32(ext
->blk
);
451 i_ext
->len
= cpu_to_le32(ext
->len
);
454 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
455 u32 blk
, unsigned int len
)
462 static inline bool __is_extent_same(struct extent_info
*ei1
,
463 struct extent_info
*ei2
)
465 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
466 ei1
->len
== ei2
->len
);
469 static inline bool __is_extent_mergeable(struct extent_info
*back
,
470 struct extent_info
*front
)
472 return (back
->fofs
+ back
->len
== front
->fofs
&&
473 back
->blk
+ back
->len
== front
->blk
);
476 static inline bool __is_back_mergeable(struct extent_info
*cur
,
477 struct extent_info
*back
)
479 return __is_extent_mergeable(back
, cur
);
482 static inline bool __is_front_mergeable(struct extent_info
*cur
,
483 struct extent_info
*front
)
485 return __is_extent_mergeable(cur
, front
);
488 struct f2fs_nm_info
{
489 block_t nat_blkaddr
; /* base disk address of NAT */
490 nid_t max_nid
; /* maximum possible node ids */
491 nid_t available_nids
; /* maximum available node ids */
492 nid_t next_scan_nid
; /* the next nid to be scanned */
493 unsigned int ram_thresh
; /* control the memory footprint */
495 /* NAT cache management */
496 struct radix_tree_root nat_root
;/* root of the nat entry cache */
497 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
498 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
499 struct list_head nat_entries
; /* cached nat entry list (clean) */
500 unsigned int nat_cnt
; /* the # of cached nat entries */
501 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
503 /* free node ids management */
504 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
505 struct list_head free_nid_list
; /* a list for free nids */
506 spinlock_t free_nid_list_lock
; /* protect free nid list */
507 unsigned int fcnt
; /* the number of free node id */
508 struct mutex build_lock
; /* lock for build free nids */
511 char *nat_bitmap
; /* NAT bitmap pointer */
512 int bitmap_size
; /* bitmap size */
516 * this structure is used as one of function parameters.
517 * all the information are dedicated to a given direct node block determined
518 * by the data offset in a file.
520 struct dnode_of_data
{
521 struct inode
*inode
; /* vfs inode pointer */
522 struct page
*inode_page
; /* its inode page, NULL is possible */
523 struct page
*node_page
; /* cached direct node page */
524 nid_t nid
; /* node id of the direct node block */
525 unsigned int ofs_in_node
; /* data offset in the node page */
526 bool inode_page_locked
; /* inode page is locked or not */
527 block_t data_blkaddr
; /* block address of the node block */
530 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
531 struct page
*ipage
, struct page
*npage
, nid_t nid
)
533 memset(dn
, 0, sizeof(*dn
));
535 dn
->inode_page
= ipage
;
536 dn
->node_page
= npage
;
543 * By default, there are 6 active log areas across the whole main area.
544 * When considering hot and cold data separation to reduce cleaning overhead,
545 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
547 * In the current design, you should not change the numbers intentionally.
548 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
549 * logs individually according to the underlying devices. (default: 6)
550 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
551 * data and 8 for node logs.
553 #define NR_CURSEG_DATA_TYPE (3)
554 #define NR_CURSEG_NODE_TYPE (3)
555 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
558 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
559 CURSEG_WARM_DATA
, /* data blocks */
560 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
561 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
562 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
563 CURSEG_COLD_NODE
, /* indirect node blocks */
565 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
569 struct completion wait
;
570 struct llist_node llnode
;
574 struct flush_cmd_control
{
575 struct task_struct
*f2fs_issue_flush
; /* flush thread */
576 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
577 struct llist_head issue_list
; /* list for command issue */
578 struct llist_node
*dispatch_list
; /* list for command dispatch */
581 struct f2fs_sm_info
{
582 struct sit_info
*sit_info
; /* whole segment information */
583 struct free_segmap_info
*free_info
; /* free segment information */
584 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
585 struct curseg_info
*curseg_array
; /* active segment information */
587 block_t seg0_blkaddr
; /* block address of 0'th segment */
588 block_t main_blkaddr
; /* start block address of main area */
589 block_t ssa_blkaddr
; /* start block address of SSA area */
591 unsigned int segment_count
; /* total # of segments */
592 unsigned int main_segments
; /* # of segments in main area */
593 unsigned int reserved_segments
; /* # of reserved segments */
594 unsigned int ovp_segments
; /* # of overprovision segments */
596 /* a threshold to reclaim prefree segments */
597 unsigned int rec_prefree_segments
;
599 /* for small discard management */
600 struct list_head discard_list
; /* 4KB discard list */
601 int nr_discards
; /* # of discards in the list */
602 int max_discards
; /* max. discards to be issued */
604 /* for batched trimming */
605 unsigned int trim_sections
; /* # of sections to trim */
607 struct list_head sit_entry_set
; /* sit entry set list */
609 unsigned int ipu_policy
; /* in-place-update policy */
610 unsigned int min_ipu_util
; /* in-place-update threshold */
611 unsigned int min_fsync_blocks
; /* threshold for fsync */
613 /* for flush command control */
614 struct flush_cmd_control
*cmd_control_info
;
622 * COUNT_TYPE for monitoring
624 * f2fs monitors the number of several block types such as on-writeback,
625 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
637 * The below are the page types of bios used in submit_bio().
638 * The available types are:
639 * DATA User data pages. It operates as async mode.
640 * NODE Node pages. It operates as async mode.
641 * META FS metadata pages such as SIT, NAT, CP.
642 * NR_PAGE_TYPE The number of page types.
643 * META_FLUSH Make sure the previous pages are written
644 * with waiting the bio's completion
645 * ... Only can be used with META.
647 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
654 INMEM
, /* the below types are used by tracepoints only. */
660 struct f2fs_io_info
{
661 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
662 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
663 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
664 block_t blk_addr
; /* block address to be written */
665 struct page
*page
; /* page to be written */
666 struct page
*encrypted_page
; /* encrypted page */
669 #define is_read_io(rw) (((rw) & 1) == READ)
670 struct f2fs_bio_info
{
671 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
672 struct bio
*bio
; /* bios to merge */
673 sector_t last_block_in_bio
; /* last block number */
674 struct f2fs_io_info fio
; /* store buffered io info. */
675 struct rw_semaphore io_rwsem
; /* blocking op for bio */
678 /* for inner inode cache management */
679 struct inode_management
{
680 struct radix_tree_root ino_root
; /* ino entry array */
681 spinlock_t ino_lock
; /* for ino entry lock */
682 struct list_head ino_list
; /* inode list head */
683 unsigned long ino_num
; /* number of entries */
686 /* For s_flag in struct f2fs_sb_info */
688 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
689 SBI_IS_CLOSE
, /* specify unmounting */
690 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
691 SBI_POR_DOING
, /* recovery is doing or not */
694 struct f2fs_sb_info
{
695 struct super_block
*sb
; /* pointer to VFS super block */
696 struct proc_dir_entry
*s_proc
; /* proc entry */
697 struct buffer_head
*raw_super_buf
; /* buffer head of raw sb */
698 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
699 int s_flag
; /* flags for sbi */
701 /* for node-related operations */
702 struct f2fs_nm_info
*nm_info
; /* node manager */
703 struct inode
*node_inode
; /* cache node blocks */
705 /* for segment-related operations */
706 struct f2fs_sm_info
*sm_info
; /* segment manager */
708 /* for bio operations */
709 struct f2fs_bio_info read_io
; /* for read bios */
710 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
713 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
714 struct inode
*meta_inode
; /* cache meta blocks */
715 struct mutex cp_mutex
; /* checkpoint procedure lock */
716 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
717 struct rw_semaphore node_write
; /* locking node writes */
718 struct mutex writepages
; /* mutex for writepages() */
719 wait_queue_head_t cp_wait
;
721 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
723 /* for orphan inode, use 0'th array */
724 unsigned int max_orphans
; /* max orphan inodes */
726 /* for directory inode management */
727 struct list_head dir_inode_list
; /* dir inode list */
728 spinlock_t dir_inode_lock
; /* for dir inode list lock */
730 /* for extent tree cache */
731 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
732 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
733 struct list_head extent_list
; /* lru list for shrinker */
734 spinlock_t extent_lock
; /* locking extent lru list */
735 int total_ext_tree
; /* extent tree count */
736 atomic_t total_ext_node
; /* extent info count */
738 /* basic filesystem units */
739 unsigned int log_sectors_per_block
; /* log2 sectors per block */
740 unsigned int log_blocksize
; /* log2 block size */
741 unsigned int blocksize
; /* block size */
742 unsigned int root_ino_num
; /* root inode number*/
743 unsigned int node_ino_num
; /* node inode number*/
744 unsigned int meta_ino_num
; /* meta inode number*/
745 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
746 unsigned int blocks_per_seg
; /* blocks per segment */
747 unsigned int segs_per_sec
; /* segments per section */
748 unsigned int secs_per_zone
; /* sections per zone */
749 unsigned int total_sections
; /* total section count */
750 unsigned int total_node_count
; /* total node block count */
751 unsigned int total_valid_node_count
; /* valid node block count */
752 unsigned int total_valid_inode_count
; /* valid inode count */
753 int active_logs
; /* # of active logs */
754 int dir_level
; /* directory level */
756 block_t user_block_count
; /* # of user blocks */
757 block_t total_valid_block_count
; /* # of valid blocks */
758 block_t alloc_valid_block_count
; /* # of allocated blocks */
759 block_t discard_blks
; /* discard command candidats */
760 block_t last_valid_block_count
; /* for recovery */
761 u32 s_next_generation
; /* for NFS support */
762 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
764 struct f2fs_mount_info mount_opt
; /* mount options */
766 /* for cleaning operations */
767 struct mutex gc_mutex
; /* mutex for GC */
768 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
769 unsigned int cur_victim_sec
; /* current victim section num */
771 /* maximum # of trials to find a victim segment for SSR and GC */
772 unsigned int max_victim_search
;
775 * for stat information.
776 * one is for the LFS mode, and the other is for the SSR mode.
778 #ifdef CONFIG_F2FS_STAT_FS
779 struct f2fs_stat_info
*stat_info
; /* FS status information */
780 unsigned int segment_count
[2]; /* # of allocated segments */
781 unsigned int block_count
[2]; /* # of allocated blocks */
782 atomic_t inplace_count
; /* # of inplace update */
783 atomic_t total_hit_ext
; /* # of lookup extent cache */
784 atomic_t read_hit_ext
; /* # of hit extent cache */
785 atomic_t inline_xattr
; /* # of inline_xattr inodes */
786 atomic_t inline_inode
; /* # of inline_data inodes */
787 atomic_t inline_dir
; /* # of inline_dentry inodes */
788 int bg_gc
; /* background gc calls */
789 unsigned int n_dirty_dirs
; /* # of dir inodes */
791 unsigned int last_victim
[2]; /* last victim segment # */
792 spinlock_t stat_lock
; /* lock for stat operations */
794 /* For sysfs suppport */
795 struct kobject s_kobj
;
796 struct completion s_kobj_unregister
;
798 /* For shrinker support */
799 struct list_head s_list
;
800 struct mutex umount_mutex
;
801 unsigned int shrinker_run_no
;
807 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
809 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
812 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
814 return sb
->s_fs_info
;
817 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
819 return F2FS_SB(inode
->i_sb
);
822 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
824 return F2FS_I_SB(mapping
->host
);
827 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
829 return F2FS_M_SB(page
->mapping
);
832 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
834 return (struct f2fs_super_block
*)(sbi
->raw_super
);
837 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
839 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
842 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
844 return (struct f2fs_node
*)page_address(page
);
847 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
849 return &((struct f2fs_node
*)page_address(page
))->i
;
852 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
854 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
857 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
859 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
862 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
864 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
867 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
869 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
872 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
874 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
877 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
879 return sbi
->meta_inode
->i_mapping
;
882 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
884 return sbi
->node_inode
->i_mapping
;
887 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
889 return sbi
->s_flag
& (0x01 << type
);
892 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
894 sbi
->s_flag
|= (0x01 << type
);
897 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
899 sbi
->s_flag
&= ~(0x01 << type
);
902 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
904 return le64_to_cpu(cp
->checkpoint_ver
);
907 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
909 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
910 return ckpt_flags
& f
;
913 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
915 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
917 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
920 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
922 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
924 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
927 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
929 down_read(&sbi
->cp_rwsem
);
932 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
934 up_read(&sbi
->cp_rwsem
);
937 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
939 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
942 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
944 up_write(&sbi
->cp_rwsem
);
947 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
949 int reason
= CP_SYNC
;
951 if (test_opt(sbi
, FASTBOOT
))
952 reason
= CP_FASTBOOT
;
953 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
958 static inline bool __remain_node_summaries(int reason
)
960 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
963 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
965 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
966 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
970 * Check whether the given nid is within node id range.
972 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
974 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
976 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
981 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
984 * Check whether the inode has blocks or not
986 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
988 if (F2FS_I(inode
)->i_xattr_nid
)
989 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
991 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
994 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
996 return ofs
== XATTR_NODE_OFFSET
;
999 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1000 struct inode
*inode
, blkcnt_t count
)
1002 block_t valid_block_count
;
1004 spin_lock(&sbi
->stat_lock
);
1006 sbi
->total_valid_block_count
+ (block_t
)count
;
1007 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1008 spin_unlock(&sbi
->stat_lock
);
1011 inode
->i_blocks
+= count
;
1012 sbi
->total_valid_block_count
= valid_block_count
;
1013 sbi
->alloc_valid_block_count
+= (block_t
)count
;
1014 spin_unlock(&sbi
->stat_lock
);
1018 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1019 struct inode
*inode
,
1022 spin_lock(&sbi
->stat_lock
);
1023 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1024 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1025 inode
->i_blocks
-= count
;
1026 sbi
->total_valid_block_count
-= (block_t
)count
;
1027 spin_unlock(&sbi
->stat_lock
);
1030 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1032 atomic_inc(&sbi
->nr_pages
[count_type
]);
1033 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1036 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1038 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
1039 if (S_ISDIR(inode
->i_mode
))
1040 inc_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
1043 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1045 atomic_dec(&sbi
->nr_pages
[count_type
]);
1048 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1050 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1051 !S_ISLNK(inode
->i_mode
))
1054 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
1056 if (S_ISDIR(inode
->i_mode
))
1057 dec_page_count(F2FS_I_SB(inode
), F2FS_DIRTY_DENTS
);
1060 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1062 return atomic_read(&sbi
->nr_pages
[count_type
]);
1065 static inline int get_dirty_pages(struct inode
*inode
)
1067 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
1070 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1072 unsigned int pages_per_sec
= sbi
->segs_per_sec
*
1073 (1 << sbi
->log_blocks_per_seg
);
1074 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
1075 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
1078 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1080 return sbi
->total_valid_block_count
;
1083 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1085 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1087 /* return NAT or SIT bitmap */
1088 if (flag
== NAT_BITMAP
)
1089 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1090 else if (flag
== SIT_BITMAP
)
1091 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1096 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1098 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1101 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1103 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1106 if (__cp_payload(sbi
) > 0) {
1107 if (flag
== NAT_BITMAP
)
1108 return &ckpt
->sit_nat_version_bitmap
;
1110 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1112 offset
= (flag
== NAT_BITMAP
) ?
1113 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1114 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1118 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1121 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1122 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1124 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1127 * odd numbered checkpoint should at cp segment 0
1128 * and even segment must be at cp segment 1
1130 if (!(ckpt_version
& 1))
1131 start_addr
+= sbi
->blocks_per_seg
;
1136 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1138 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1141 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1142 struct inode
*inode
)
1144 block_t valid_block_count
;
1145 unsigned int valid_node_count
;
1147 spin_lock(&sbi
->stat_lock
);
1149 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1150 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1151 spin_unlock(&sbi
->stat_lock
);
1155 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1156 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1157 spin_unlock(&sbi
->stat_lock
);
1164 sbi
->alloc_valid_block_count
++;
1165 sbi
->total_valid_node_count
++;
1166 sbi
->total_valid_block_count
++;
1167 spin_unlock(&sbi
->stat_lock
);
1172 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1173 struct inode
*inode
)
1175 spin_lock(&sbi
->stat_lock
);
1177 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1178 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1179 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1182 sbi
->total_valid_node_count
--;
1183 sbi
->total_valid_block_count
--;
1185 spin_unlock(&sbi
->stat_lock
);
1188 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1190 return sbi
->total_valid_node_count
;
1193 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1195 spin_lock(&sbi
->stat_lock
);
1196 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1197 sbi
->total_valid_inode_count
++;
1198 spin_unlock(&sbi
->stat_lock
);
1201 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1203 spin_lock(&sbi
->stat_lock
);
1204 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1205 sbi
->total_valid_inode_count
--;
1206 spin_unlock(&sbi
->stat_lock
);
1209 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1211 return sbi
->total_valid_inode_count
;
1214 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1220 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1223 page_cache_release(page
);
1226 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1229 f2fs_put_page(dn
->node_page
, 1);
1230 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1231 f2fs_put_page(dn
->inode_page
, 0);
1232 dn
->node_page
= NULL
;
1233 dn
->inode_page
= NULL
;
1236 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1239 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1242 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1247 entry
= kmem_cache_alloc(cachep
, flags
);
1256 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1257 unsigned long index
, void *item
)
1259 while (radix_tree_insert(root
, index
, item
))
1263 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1265 static inline bool IS_INODE(struct page
*page
)
1267 struct f2fs_node
*p
= F2FS_NODE(page
);
1268 return RAW_IS_INODE(p
);
1271 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1273 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1276 static inline block_t
datablock_addr(struct page
*node_page
,
1277 unsigned int offset
)
1279 struct f2fs_node
*raw_node
;
1281 raw_node
= F2FS_NODE(node_page
);
1282 addr_array
= blkaddr_in_node(raw_node
);
1283 return le32_to_cpu(addr_array
[offset
]);
1286 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1291 mask
= 1 << (7 - (nr
& 0x07));
1292 return mask
& *addr
;
1295 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1300 mask
= 1 << (7 - (nr
& 0x07));
1304 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1309 mask
= 1 << (7 - (nr
& 0x07));
1313 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1319 mask
= 1 << (7 - (nr
& 0x07));
1325 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1331 mask
= 1 << (7 - (nr
& 0x07));
1337 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1342 mask
= 1 << (7 - (nr
& 0x07));
1346 /* used for f2fs_inode_info->flags */
1348 FI_NEW_INODE
, /* indicate newly allocated inode */
1349 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1350 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1351 FI_INC_LINK
, /* need to increment i_nlink */
1352 FI_ACL_MODE
, /* indicate acl mode */
1353 FI_NO_ALLOC
, /* should not allocate any blocks */
1354 FI_FREE_NID
, /* free allocated nide */
1355 FI_UPDATE_DIR
, /* should update inode block for consistency */
1356 FI_DELAY_IPUT
, /* used for the recovery */
1357 FI_NO_EXTENT
, /* not to use the extent cache */
1358 FI_INLINE_XATTR
, /* used for inline xattr */
1359 FI_INLINE_DATA
, /* used for inline data*/
1360 FI_INLINE_DENTRY
, /* used for inline dentry */
1361 FI_APPEND_WRITE
, /* inode has appended data */
1362 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1363 FI_NEED_IPU
, /* used for ipu per file */
1364 FI_ATOMIC_FILE
, /* indicate atomic file */
1365 FI_VOLATILE_FILE
, /* indicate volatile file */
1366 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1367 FI_DROP_CACHE
, /* drop dirty page cache */
1368 FI_DATA_EXIST
, /* indicate data exists */
1369 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1372 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1374 if (!test_bit(flag
, &fi
->flags
))
1375 set_bit(flag
, &fi
->flags
);
1378 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1380 return test_bit(flag
, &fi
->flags
);
1383 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1385 if (test_bit(flag
, &fi
->flags
))
1386 clear_bit(flag
, &fi
->flags
);
1389 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1391 fi
->i_acl_mode
= mode
;
1392 set_inode_flag(fi
, FI_ACL_MODE
);
1395 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1396 struct f2fs_inode
*ri
)
1398 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1399 set_inode_flag(fi
, FI_INLINE_XATTR
);
1400 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1401 set_inode_flag(fi
, FI_INLINE_DATA
);
1402 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1403 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1404 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1405 set_inode_flag(fi
, FI_DATA_EXIST
);
1406 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1407 set_inode_flag(fi
, FI_INLINE_DOTS
);
1410 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1411 struct f2fs_inode
*ri
)
1415 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1416 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1417 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1418 ri
->i_inline
|= F2FS_INLINE_DATA
;
1419 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1420 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1421 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1422 ri
->i_inline
|= F2FS_DATA_EXIST
;
1423 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1424 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1427 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1429 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1432 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1434 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1435 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1436 return DEF_ADDRS_PER_INODE
;
1439 static inline void *inline_xattr_addr(struct page
*page
)
1441 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1442 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1443 F2FS_INLINE_XATTR_ADDRS
]);
1446 static inline int inline_xattr_size(struct inode
*inode
)
1448 if (f2fs_has_inline_xattr(inode
))
1449 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1454 static inline int f2fs_has_inline_data(struct inode
*inode
)
1456 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1459 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1461 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1462 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1465 static inline int f2fs_exist_data(struct inode
*inode
)
1467 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1470 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1472 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1475 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1477 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1480 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1482 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1485 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1487 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1490 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1492 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1495 static inline void *inline_data_addr(struct page
*page
)
1497 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1498 return (void *)&(ri
->i_addr
[1]);
1501 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1503 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1506 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1508 if (!f2fs_has_inline_dentry(dir
))
1512 static inline int is_file(struct inode
*inode
, int type
)
1514 return F2FS_I(inode
)->i_advise
& type
;
1517 static inline void set_file(struct inode
*inode
, int type
)
1519 F2FS_I(inode
)->i_advise
|= type
;
1522 static inline void clear_file(struct inode
*inode
, int type
)
1524 F2FS_I(inode
)->i_advise
&= ~type
;
1527 static inline int f2fs_readonly(struct super_block
*sb
)
1529 return sb
->s_flags
& MS_RDONLY
;
1532 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1534 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1537 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1539 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1540 sbi
->sb
->s_flags
|= MS_RDONLY
;
1543 static inline bool is_dot_dotdot(const struct qstr
*str
)
1545 if (str
->len
== 1 && str
->name
[0] == '.')
1548 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1554 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1556 mode_t mode
= inode
->i_mode
;
1558 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1559 is_inode_flag_set(F2FS_I(inode
), FI_NO_EXTENT
))
1562 return S_ISREG(mode
);
1565 #define get_inode_mode(i) \
1566 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1567 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1569 /* get offset of first page in next direct node */
1570 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1571 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1572 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1573 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1578 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1579 void truncate_data_blocks(struct dnode_of_data
*);
1580 int truncate_blocks(struct inode
*, u64
, bool);
1581 void f2fs_truncate(struct inode
*, bool);
1582 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1583 int f2fs_setattr(struct dentry
*, struct iattr
*);
1584 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1585 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1586 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1587 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1592 void f2fs_set_inode_flags(struct inode
*);
1593 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1594 int try_to_free_nats(struct f2fs_sb_info
*, int);
1595 void update_inode(struct inode
*, struct page
*);
1596 void update_inode_page(struct inode
*);
1597 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1598 void f2fs_evict_inode(struct inode
*);
1599 void handle_failed_inode(struct inode
*);
1604 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1609 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1610 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1612 struct f2fs_dir_entry
*find_target_dentry(struct f2fs_filename
*,
1613 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1614 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1615 unsigned int, struct f2fs_str
*);
1616 void do_make_empty_dir(struct inode
*, struct inode
*,
1617 struct f2fs_dentry_ptr
*);
1618 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1619 const struct qstr
*, struct page
*);
1620 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1621 int room_for_filename(const void *, int, int);
1622 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1623 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1625 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1626 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1627 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1628 struct page
*, struct inode
*);
1629 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1630 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1631 const struct qstr
*, f2fs_hash_t
, unsigned int);
1632 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1634 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1636 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1637 bool f2fs_empty_dir(struct inode
*);
1639 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1641 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1642 inode
, inode
->i_ino
, inode
->i_mode
);
1648 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1649 int f2fs_sync_fs(struct super_block
*, int);
1650 extern __printf(3, 4)
1651 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1656 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1661 struct dnode_of_data
;
1664 bool available_free_memory(struct f2fs_sb_info
*, int);
1665 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1666 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1667 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1668 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1669 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1670 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1671 int truncate_xattr_node(struct inode
*, struct page
*);
1672 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1673 void remove_inode_page(struct inode
*);
1674 struct page
*new_inode_page(struct inode
*);
1675 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1676 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1677 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1678 struct page
*get_node_page_ra(struct page
*, int);
1679 void sync_inode_page(struct dnode_of_data
*);
1680 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1681 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1682 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1683 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1684 void recover_inline_xattr(struct inode
*, struct page
*);
1685 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1686 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1687 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1688 struct f2fs_summary_block
*);
1689 void flush_nat_entries(struct f2fs_sb_info
*);
1690 int build_node_manager(struct f2fs_sb_info
*);
1691 void destroy_node_manager(struct f2fs_sb_info
*);
1692 int __init
create_node_manager_caches(void);
1693 void destroy_node_manager_caches(void);
1698 void register_inmem_page(struct inode
*, struct page
*);
1699 int commit_inmem_pages(struct inode
*, bool);
1700 void f2fs_balance_fs(struct f2fs_sb_info
*);
1701 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1702 int f2fs_issue_flush(struct f2fs_sb_info
*);
1703 int create_flush_cmd_control(struct f2fs_sb_info
*);
1704 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1705 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1706 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1707 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1708 void release_discard_addrs(struct f2fs_sb_info
*);
1709 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1710 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1711 void allocate_new_segments(struct f2fs_sb_info
*);
1712 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1713 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1714 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1715 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1716 void write_node_page(unsigned int, struct f2fs_io_info
*);
1717 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1718 void rewrite_data_page(struct f2fs_io_info
*);
1719 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
1720 block_t
, block_t
, unsigned char, bool);
1721 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1722 block_t
, block_t
*, struct f2fs_summary
*, int);
1723 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1724 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1725 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1726 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1727 int, unsigned int, int);
1728 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1729 int build_segment_manager(struct f2fs_sb_info
*);
1730 void destroy_segment_manager(struct f2fs_sb_info
*);
1731 int __init
create_segment_manager_caches(void);
1732 void destroy_segment_manager_caches(void);
1737 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1738 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1739 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
1740 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int);
1741 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1742 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1743 void add_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1744 void remove_dirty_inode(struct f2fs_sb_info
*, nid_t
, int type
);
1745 void release_dirty_inode(struct f2fs_sb_info
*);
1746 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1747 int acquire_orphan_inode(struct f2fs_sb_info
*);
1748 void release_orphan_inode(struct f2fs_sb_info
*);
1749 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1750 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1751 int recover_orphan_inodes(struct f2fs_sb_info
*);
1752 int get_valid_checkpoint(struct f2fs_sb_info
*);
1753 void update_dirty_page(struct inode
*, struct page
*);
1754 void add_dirty_dir_inode(struct inode
*);
1755 void remove_dirty_dir_inode(struct inode
*);
1756 void sync_dirty_dir_inodes(struct f2fs_sb_info
*);
1757 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1758 void init_ino_entry_info(struct f2fs_sb_info
*);
1759 int __init
create_checkpoint_caches(void);
1760 void destroy_checkpoint_caches(void);
1765 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1766 int f2fs_submit_page_bio(struct f2fs_io_info
*);
1767 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
1768 void set_data_blkaddr(struct dnode_of_data
*);
1769 int reserve_new_block(struct dnode_of_data
*);
1770 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
1771 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1772 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int);
1773 struct page
*find_data_page(struct inode
*, pgoff_t
);
1774 struct page
*get_lock_data_page(struct inode
*, pgoff_t
);
1775 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1776 int do_write_data_page(struct f2fs_io_info
*);
1777 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1778 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1779 int f2fs_release_page(struct page
*, gfp_t
);
1784 int start_gc_thread(struct f2fs_sb_info
*);
1785 void stop_gc_thread(struct f2fs_sb_info
*);
1786 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1787 int f2fs_gc(struct f2fs_sb_info
*);
1788 void build_gc_manager(struct f2fs_sb_info
*);
1793 int recover_fsync_data(struct f2fs_sb_info
*);
1794 bool space_for_roll_forward(struct f2fs_sb_info
*);
1799 #ifdef CONFIG_F2FS_STAT_FS
1800 struct f2fs_stat_info
{
1801 struct list_head stat_list
;
1802 struct f2fs_sb_info
*sbi
;
1803 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1804 int main_area_segs
, main_area_sections
, main_area_zones
;
1805 int hit_ext
, total_ext
, ext_tree
, ext_node
;
1806 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1807 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1808 int total_count
, utilization
;
1809 int bg_gc
, inmem_pages
, wb_pages
;
1810 int inline_xattr
, inline_inode
, inline_dir
;
1811 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1812 unsigned int bimodal
, avg_vblocks
;
1813 int util_free
, util_valid
, util_invalid
;
1814 int rsvd_segs
, overp_segs
;
1815 int dirty_count
, node_pages
, meta_pages
;
1816 int prefree_count
, call_count
, cp_count
;
1817 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1818 int bg_node_segs
, bg_data_segs
;
1819 int tot_blks
, data_blks
, node_blks
;
1820 int bg_data_blks
, bg_node_blks
;
1821 int curseg
[NR_CURSEG_TYPE
];
1822 int cursec
[NR_CURSEG_TYPE
];
1823 int curzone
[NR_CURSEG_TYPE
];
1825 unsigned int segment_count
[2];
1826 unsigned int block_count
[2];
1827 unsigned int inplace_count
;
1828 unsigned base_mem
, cache_mem
, page_mem
;
1831 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1833 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1836 #define stat_inc_cp_count(si) ((si)->cp_count++)
1837 #define stat_inc_call_count(si) ((si)->call_count++)
1838 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1839 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1840 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1841 #define stat_inc_total_hit(sbi) (atomic_inc(&(sbi)->total_hit_ext))
1842 #define stat_inc_read_hit(sbi) (atomic_inc(&(sbi)->read_hit_ext))
1843 #define stat_inc_inline_xattr(inode) \
1845 if (f2fs_has_inline_xattr(inode)) \
1846 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1848 #define stat_dec_inline_xattr(inode) \
1850 if (f2fs_has_inline_xattr(inode)) \
1851 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1853 #define stat_inc_inline_inode(inode) \
1855 if (f2fs_has_inline_data(inode)) \
1856 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1858 #define stat_dec_inline_inode(inode) \
1860 if (f2fs_has_inline_data(inode)) \
1861 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1863 #define stat_inc_inline_dir(inode) \
1865 if (f2fs_has_inline_dentry(inode)) \
1866 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1868 #define stat_dec_inline_dir(inode) \
1870 if (f2fs_has_inline_dentry(inode)) \
1871 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1873 #define stat_inc_seg_type(sbi, curseg) \
1874 ((sbi)->segment_count[(curseg)->alloc_type]++)
1875 #define stat_inc_block_count(sbi, curseg) \
1876 ((sbi)->block_count[(curseg)->alloc_type]++)
1877 #define stat_inc_inplace_blocks(sbi) \
1878 (atomic_inc(&(sbi)->inplace_count))
1879 #define stat_inc_seg_count(sbi, type, gc_type) \
1881 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1883 if (type == SUM_TYPE_DATA) { \
1885 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1888 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1892 #define stat_inc_tot_blk_count(si, blks) \
1893 (si->tot_blks += (blks))
1895 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
1897 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1898 stat_inc_tot_blk_count(si, blks); \
1899 si->data_blks += (blks); \
1900 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
1903 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
1905 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1906 stat_inc_tot_blk_count(si, blks); \
1907 si->node_blks += (blks); \
1908 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
1911 int f2fs_build_stats(struct f2fs_sb_info
*);
1912 void f2fs_destroy_stats(struct f2fs_sb_info
*);
1913 void __init
f2fs_create_root_stats(void);
1914 void f2fs_destroy_root_stats(void);
1916 #define stat_inc_cp_count(si)
1917 #define stat_inc_call_count(si)
1918 #define stat_inc_bggc_count(si)
1919 #define stat_inc_dirty_dir(sbi)
1920 #define stat_dec_dirty_dir(sbi)
1921 #define stat_inc_total_hit(sb)
1922 #define stat_inc_read_hit(sb)
1923 #define stat_inc_inline_xattr(inode)
1924 #define stat_dec_inline_xattr(inode)
1925 #define stat_inc_inline_inode(inode)
1926 #define stat_dec_inline_inode(inode)
1927 #define stat_inc_inline_dir(inode)
1928 #define stat_dec_inline_dir(inode)
1929 #define stat_inc_seg_type(sbi, curseg)
1930 #define stat_inc_block_count(sbi, curseg)
1931 #define stat_inc_inplace_blocks(sbi)
1932 #define stat_inc_seg_count(sbi, type, gc_type)
1933 #define stat_inc_tot_blk_count(si, blks)
1934 #define stat_inc_data_blk_count(sbi, blks, gc_type)
1935 #define stat_inc_node_blk_count(sbi, blks, gc_type)
1937 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
1938 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
1939 static inline void __init
f2fs_create_root_stats(void) { }
1940 static inline void f2fs_destroy_root_stats(void) { }
1943 extern const struct file_operations f2fs_dir_operations
;
1944 extern const struct file_operations f2fs_file_operations
;
1945 extern const struct inode_operations f2fs_file_inode_operations
;
1946 extern const struct address_space_operations f2fs_dblock_aops
;
1947 extern const struct address_space_operations f2fs_node_aops
;
1948 extern const struct address_space_operations f2fs_meta_aops
;
1949 extern const struct inode_operations f2fs_dir_inode_operations
;
1950 extern const struct inode_operations f2fs_symlink_inode_operations
;
1951 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
1952 extern const struct inode_operations f2fs_special_inode_operations
;
1953 extern struct kmem_cache
*inode_entry_slab
;
1958 bool f2fs_may_inline_data(struct inode
*);
1959 bool f2fs_may_inline_dentry(struct inode
*);
1960 void read_inline_data(struct page
*, struct page
*);
1961 bool truncate_inline_inode(struct page
*, u64
);
1962 int f2fs_read_inline_data(struct inode
*, struct page
*);
1963 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
1964 int f2fs_convert_inline_inode(struct inode
*);
1965 int f2fs_write_inline_data(struct inode
*, struct page
*);
1966 bool recover_inline_data(struct inode
*, struct page
*);
1967 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
1968 struct f2fs_filename
*, struct page
**);
1969 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
1970 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
1971 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
1973 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
1974 struct inode
*, struct inode
*);
1975 bool f2fs_empty_inline_dir(struct inode
*);
1976 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
1982 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
1983 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
1984 void f2fs_join_shrinker(struct f2fs_sb_info
*);
1985 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
1990 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
1991 void f2fs_drop_largest_extent(struct inode
*, pgoff_t
);
1992 void f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
1993 unsigned int f2fs_destroy_extent_node(struct inode
*);
1994 void f2fs_destroy_extent_tree(struct inode
*);
1995 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
1996 void f2fs_update_extent_cache(struct dnode_of_data
*);
1997 void init_extent_cache_info(struct f2fs_sb_info
*);
1998 int __init
create_extent_cache(void);
1999 void destroy_extent_cache(void);
2004 static inline int f2fs_encrypted_inode(struct inode
*inode
)
2006 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2007 return file_is_encrypt(inode
);
2013 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2015 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2016 file_set_encrypt(inode
);
2020 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2022 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2023 return unlikely(bio
->bi_private
!= NULL
);
2029 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2031 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2032 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2038 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2040 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2041 mode_t mode
= inode
->i_mode
;
2043 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2049 /* crypto_policy.c */
2050 int f2fs_is_child_context_consistent_with_parent(struct inode
*,
2052 int f2fs_inherit_context(struct inode
*, struct inode
*, struct page
*);
2053 int f2fs_process_policy(const struct f2fs_encryption_policy
*, struct inode
*);
2054 int f2fs_get_policy(struct inode
*, struct f2fs_encryption_policy
*);
2057 extern struct kmem_cache
*f2fs_crypt_info_cachep
;
2058 bool f2fs_valid_contents_enc_mode(uint32_t);
2059 uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2060 struct f2fs_crypto_ctx
*f2fs_get_crypto_ctx(struct inode
*);
2061 void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx
*);
2062 struct page
*f2fs_encrypt(struct inode
*, struct page
*);
2063 int f2fs_decrypt(struct f2fs_crypto_ctx
*, struct page
*);
2064 int f2fs_decrypt_one(struct inode
*, struct page
*);
2065 void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx
*, struct bio
*);
2068 void f2fs_free_encryption_info(struct inode
*, struct f2fs_crypt_info
*);
2069 int _f2fs_get_encryption_info(struct inode
*inode
);
2071 /* crypto_fname.c */
2072 bool f2fs_valid_filenames_enc_mode(uint32_t);
2073 u32
f2fs_fname_crypto_round_up(u32
, u32
);
2074 int f2fs_fname_crypto_alloc_buffer(struct inode
*, u32
, struct f2fs_str
*);
2075 int f2fs_fname_disk_to_usr(struct inode
*, f2fs_hash_t
*,
2076 const struct f2fs_str
*, struct f2fs_str
*);
2077 int f2fs_fname_usr_to_disk(struct inode
*, const struct qstr
*,
2080 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2081 void f2fs_restore_and_release_control_page(struct page
**);
2082 void f2fs_restore_control_page(struct page
*);
2084 int __init
f2fs_init_crypto(void);
2085 int f2fs_crypto_initialize(void);
2086 void f2fs_exit_crypto(void);
2088 int f2fs_has_encryption_key(struct inode
*);
2090 static inline int f2fs_get_encryption_info(struct inode
*inode
)
2092 struct f2fs_crypt_info
*ci
= F2FS_I(inode
)->i_crypt_info
;
2095 (ci
->ci_keyring_key
&&
2096 (ci
->ci_keyring_key
->flags
& ((1 << KEY_FLAG_INVALIDATED
) |
2097 (1 << KEY_FLAG_REVOKED
) |
2098 (1 << KEY_FLAG_DEAD
)))))
2099 return _f2fs_get_encryption_info(inode
);
2103 void f2fs_fname_crypto_free_buffer(struct f2fs_str
*);
2104 int f2fs_fname_setup_filename(struct inode
*, const struct qstr
*,
2105 int lookup
, struct f2fs_filename
*);
2106 void f2fs_fname_free_filename(struct f2fs_filename
*);
2108 static inline void f2fs_restore_and_release_control_page(struct page
**p
) { }
2109 static inline void f2fs_restore_control_page(struct page
*p
) { }
2111 static inline int __init
f2fs_init_crypto(void) { return 0; }
2112 static inline void f2fs_exit_crypto(void) { }
2114 static inline int f2fs_has_encryption_key(struct inode
*i
) { return 0; }
2115 static inline int f2fs_get_encryption_info(struct inode
*i
) { return 0; }
2116 static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str
*p
) { }
2118 static inline int f2fs_fname_setup_filename(struct inode
*dir
,
2119 const struct qstr
*iname
,
2120 int lookup
, struct f2fs_filename
*fname
)
2122 memset(fname
, 0, sizeof(struct f2fs_filename
));
2123 fname
->usr_fname
= iname
;
2124 fname
->disk_name
.name
= (unsigned char *)iname
->name
;
2125 fname
->disk_name
.len
= iname
->len
;
2129 static inline void f2fs_fname_free_filename(struct f2fs_filename
*fname
) { }