4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
14 #include <linux/types.h>
15 #include <linux/page-flags.h>
16 #include <linux/buffer_head.h>
17 #include <linux/slab.h>
18 #include <linux/crc32.h>
19 #include <linux/magic.h>
20 #include <linux/kobject.h>
21 #include <linux/sched.h>
22 #include <linux/vmalloc.h>
23 #include <linux/bio.h>
24 #include <linux/blkdev.h>
26 #ifdef CONFIG_F2FS_CHECK_FS
27 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
28 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
30 #define f2fs_bug_on(sbi, condition) \
32 if (unlikely(condition)) { \
34 set_sbi_flag(sbi, SBI_NEED_FSCK); \
37 #define f2fs_down_write(x, y) down_write(x)
43 #define F2FS_MOUNT_BG_GC 0x00000001
44 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
45 #define F2FS_MOUNT_DISCARD 0x00000004
46 #define F2FS_MOUNT_NOHEAP 0x00000008
47 #define F2FS_MOUNT_XATTR_USER 0x00000010
48 #define F2FS_MOUNT_POSIX_ACL 0x00000020
49 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
50 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
51 #define F2FS_MOUNT_INLINE_DATA 0x00000100
52 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
53 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
54 #define F2FS_MOUNT_NOBARRIER 0x00000800
55 #define F2FS_MOUNT_FASTBOOT 0x00001000
56 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
57 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
58 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
60 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
61 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
62 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
64 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
65 typecheck(unsigned long long, b) && \
66 ((long long)((a) - (b)) > 0))
68 typedef u32 block_t
; /*
69 * should not change u32, since it is the on-disk block
70 * address format, __le32.
74 struct f2fs_mount_info
{
78 #define F2FS_FEATURE_ENCRYPT 0x0001
80 #define F2FS_HAS_FEATURE(sb, mask) \
81 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
82 #define F2FS_SET_FEATURE(sb, mask) \
83 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
84 #define F2FS_CLEAR_FEATURE(sb, mask) \
85 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
87 #define CRCPOLY_LE 0xedb88320
89 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
91 unsigned char *p
= (unsigned char *)buf
;
92 __u32 crc
= F2FS_SUPER_MAGIC
;
97 for (i
= 0; i
< 8; i
++)
98 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
103 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
105 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
109 * For checkpoint manager
124 #define DEF_BATCHED_TRIM_SECTIONS 32
125 #define BATCHED_TRIM_SEGMENTS(sbi) \
126 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
127 #define BATCHED_TRIM_BLOCKS(sbi) \
128 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
129 #define DEF_CP_INTERVAL 60 /* 60 secs */
130 #define DEF_IDLE_INTERVAL 120 /* 2 mins */
141 * For CP/NAT/SIT/SSA readahead
151 /* for the list of ino */
153 ORPHAN_INO
, /* for orphan ino list */
154 APPEND_INO
, /* for append ino list */
155 UPDATE_INO
, /* for update ino list */
156 MAX_INO_ENTRY
, /* max. list */
160 struct list_head list
; /* list head */
161 nid_t ino
; /* inode number */
164 /* for the list of inodes to be GCed */
166 struct list_head list
; /* list head */
167 struct inode
*inode
; /* vfs inode pointer */
170 /* for the list of blockaddresses to be discarded */
171 struct discard_entry
{
172 struct list_head list
; /* list head */
173 block_t blkaddr
; /* block address to be discarded */
174 int len
; /* # of consecutive blocks of the discard */
177 /* for the list of fsync inodes, used only during recovery */
178 struct fsync_inode_entry
{
179 struct list_head list
; /* list head */
180 struct inode
*inode
; /* vfs inode pointer */
181 block_t blkaddr
; /* block address locating the last fsync */
182 block_t last_dentry
; /* block address locating the last dentry */
183 block_t last_inode
; /* block address locating the last inode */
186 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
187 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
189 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
190 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
191 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
192 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
194 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
195 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
197 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
199 int before
= nats_in_cursum(rs
);
200 rs
->n_nats
= cpu_to_le16(before
+ i
);
204 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
206 int before
= sits_in_cursum(rs
);
207 rs
->n_sits
= cpu_to_le16(before
+ i
);
211 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
214 if (type
== NAT_JOURNAL
)
215 return size
<= MAX_NAT_JENTRIES(sum
);
216 return size
<= MAX_SIT_JENTRIES(sum
);
222 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
223 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
224 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
226 #define F2FS_IOCTL_MAGIC 0xf5
227 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
228 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
229 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
230 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
231 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
232 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
233 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
234 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
236 #define F2FS_IOC_SET_ENCRYPTION_POLICY \
237 _IOR('f', 19, struct f2fs_encryption_policy)
238 #define F2FS_IOC_GET_ENCRYPTION_PWSALT \
239 _IOW('f', 20, __u8[16])
240 #define F2FS_IOC_GET_ENCRYPTION_POLICY \
241 _IOW('f', 21, struct f2fs_encryption_policy)
244 * should be same as XFS_IOC_GOINGDOWN.
245 * Flags for going down operation used by FS_IOC_GOINGDOWN
247 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
248 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
249 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
250 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
251 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
253 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
255 * ioctl commands in 32 bit emulation
257 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
258 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
259 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
262 struct f2fs_defragment
{
268 * For INODE and NODE manager
270 /* for directory operations */
276 struct f2fs_filename
{
277 const struct qstr
*usr_fname
;
278 struct f2fs_str disk_name
;
280 #ifdef CONFIG_F2FS_FS_ENCRYPTION
281 struct f2fs_str crypto_buf
;
285 #define FSTR_INIT(n, l) { .name = n, .len = l }
286 #define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
287 #define fname_name(p) ((p)->disk_name.name)
288 #define fname_len(p) ((p)->disk_name.len)
290 struct f2fs_dentry_ptr
{
293 struct f2fs_dir_entry
*dentry
;
294 __u8 (*filename
)[F2FS_SLOT_LEN
];
298 static inline void make_dentry_ptr(struct inode
*inode
,
299 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
304 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
305 d
->max
= NR_DENTRY_IN_BLOCK
;
306 d
->bitmap
= &t
->dentry_bitmap
;
307 d
->dentry
= t
->dentry
;
308 d
->filename
= t
->filename
;
310 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
311 d
->max
= NR_INLINE_DENTRY
;
312 d
->bitmap
= &t
->dentry_bitmap
;
313 d
->dentry
= t
->dentry
;
314 d
->filename
= t
->filename
;
319 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
320 * as its node offset to distinguish from index node blocks.
321 * But some bits are used to mark the node block.
323 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
326 ALLOC_NODE
, /* allocate a new node page if needed */
327 LOOKUP_NODE
, /* look up a node without readahead */
329 * look up a node with readahead called
334 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
336 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
338 /* vector size for gang look-up from extent cache that consists of radix tree */
339 #define EXT_TREE_VEC_SIZE 64
341 /* for in-memory extent cache entry */
342 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
344 /* number of extent info in extent cache we try to shrink */
345 #define EXTENT_CACHE_SHRINK_NUMBER 128
348 unsigned int fofs
; /* start offset in a file */
349 u32 blk
; /* start block address of the extent */
350 unsigned int len
; /* length of the extent */
354 struct rb_node rb_node
; /* rb node located in rb-tree */
355 struct list_head list
; /* node in global extent list of sbi */
356 struct extent_info ei
; /* extent info */
357 struct extent_tree
*et
; /* extent tree pointer */
361 nid_t ino
; /* inode number */
362 struct rb_root root
; /* root of extent info rb-tree */
363 struct extent_node
*cached_en
; /* recently accessed extent node */
364 struct extent_info largest
; /* largested extent info */
365 struct list_head list
; /* to be used by sbi->zombie_list */
366 rwlock_t lock
; /* protect extent info rb-tree */
367 atomic_t node_cnt
; /* # of extent node in rb-tree*/
371 * This structure is taken from ext4_map_blocks.
373 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
375 #define F2FS_MAP_NEW (1 << BH_New)
376 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
377 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
378 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
381 struct f2fs_map_blocks
{
385 unsigned int m_flags
;
388 /* for flag in get_data_block */
389 #define F2FS_GET_BLOCK_READ 0
390 #define F2FS_GET_BLOCK_DIO 1
391 #define F2FS_GET_BLOCK_FIEMAP 2
392 #define F2FS_GET_BLOCK_BMAP 3
395 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
397 #define FADVISE_COLD_BIT 0x01
398 #define FADVISE_LOST_PINO_BIT 0x02
399 #define FADVISE_ENCRYPT_BIT 0x04
400 #define FADVISE_ENC_NAME_BIT 0x08
402 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
403 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
404 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
405 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
406 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
407 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
408 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
409 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
410 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
411 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
412 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
414 /* Encryption algorithms */
415 #define F2FS_ENCRYPTION_MODE_INVALID 0
416 #define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
417 #define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
418 #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
419 #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
421 #include "f2fs_crypto.h"
423 #define DEF_DIR_LEVEL 0
425 struct f2fs_inode_info
{
426 struct inode vfs_inode
; /* serve a vfs inode */
427 unsigned long i_flags
; /* keep an inode flags for ioctl */
428 unsigned char i_advise
; /* use to give file attribute hints */
429 unsigned char i_dir_level
; /* use for dentry level for large dir */
430 unsigned int i_current_depth
; /* use only in directory structure */
431 unsigned int i_pino
; /* parent inode number */
432 umode_t i_acl_mode
; /* keep file acl mode temporarily */
434 /* Use below internally in f2fs*/
435 unsigned long flags
; /* use to pass per-file flags */
436 struct rw_semaphore i_sem
; /* protect fi info */
437 atomic_t dirty_pages
; /* # of dirty pages */
438 f2fs_hash_t chash
; /* hash value of given file name */
439 unsigned int clevel
; /* maximum level of given file name */
440 nid_t i_xattr_nid
; /* node id that contains xattrs */
441 unsigned long long xattr_ver
; /* cp version of xattr modification */
443 struct list_head dirty_list
; /* linked in global dirty list */
444 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
445 struct mutex inmem_lock
; /* lock for inmemory pages */
447 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
449 #ifdef CONFIG_F2FS_FS_ENCRYPTION
450 /* Encryption params */
451 struct f2fs_crypt_info
*i_crypt_info
;
455 static inline void get_extent_info(struct extent_info
*ext
,
456 struct f2fs_extent i_ext
)
458 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
459 ext
->blk
= le32_to_cpu(i_ext
.blk
);
460 ext
->len
= le32_to_cpu(i_ext
.len
);
463 static inline void set_raw_extent(struct extent_info
*ext
,
464 struct f2fs_extent
*i_ext
)
466 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
467 i_ext
->blk
= cpu_to_le32(ext
->blk
);
468 i_ext
->len
= cpu_to_le32(ext
->len
);
471 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
472 u32 blk
, unsigned int len
)
479 static inline bool __is_extent_same(struct extent_info
*ei1
,
480 struct extent_info
*ei2
)
482 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
483 ei1
->len
== ei2
->len
);
486 static inline bool __is_extent_mergeable(struct extent_info
*back
,
487 struct extent_info
*front
)
489 return (back
->fofs
+ back
->len
== front
->fofs
&&
490 back
->blk
+ back
->len
== front
->blk
);
493 static inline bool __is_back_mergeable(struct extent_info
*cur
,
494 struct extent_info
*back
)
496 return __is_extent_mergeable(back
, cur
);
499 static inline bool __is_front_mergeable(struct extent_info
*cur
,
500 struct extent_info
*front
)
502 return __is_extent_mergeable(cur
, front
);
505 static inline void __try_update_largest_extent(struct extent_tree
*et
,
506 struct extent_node
*en
)
508 if (en
->ei
.len
> et
->largest
.len
)
509 et
->largest
= en
->ei
;
512 struct f2fs_nm_info
{
513 block_t nat_blkaddr
; /* base disk address of NAT */
514 nid_t max_nid
; /* maximum possible node ids */
515 nid_t available_nids
; /* maximum available node ids */
516 nid_t next_scan_nid
; /* the next nid to be scanned */
517 unsigned int ram_thresh
; /* control the memory footprint */
518 unsigned int ra_nid_pages
; /* # of nid pages to be readaheaded */
519 unsigned int dirty_nats_ratio
; /* control dirty nats ratio threshold */
521 /* NAT cache management */
522 struct radix_tree_root nat_root
;/* root of the nat entry cache */
523 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
524 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
525 struct list_head nat_entries
; /* cached nat entry list (clean) */
526 unsigned int nat_cnt
; /* the # of cached nat entries */
527 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
529 /* free node ids management */
530 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
531 struct list_head free_nid_list
; /* a list for free nids */
532 spinlock_t free_nid_list_lock
; /* protect free nid list */
533 unsigned int fcnt
; /* the number of free node id */
534 struct mutex build_lock
; /* lock for build free nids */
537 char *nat_bitmap
; /* NAT bitmap pointer */
538 int bitmap_size
; /* bitmap size */
542 * this structure is used as one of function parameters.
543 * all the information are dedicated to a given direct node block determined
544 * by the data offset in a file.
546 struct dnode_of_data
{
547 struct inode
*inode
; /* vfs inode pointer */
548 struct page
*inode_page
; /* its inode page, NULL is possible */
549 struct page
*node_page
; /* cached direct node page */
550 nid_t nid
; /* node id of the direct node block */
551 unsigned int ofs_in_node
; /* data offset in the node page */
552 bool inode_page_locked
; /* inode page is locked or not */
553 bool node_changed
; /* is node block changed */
554 block_t data_blkaddr
; /* block address of the node block */
557 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
558 struct page
*ipage
, struct page
*npage
, nid_t nid
)
560 memset(dn
, 0, sizeof(*dn
));
562 dn
->inode_page
= ipage
;
563 dn
->node_page
= npage
;
570 * By default, there are 6 active log areas across the whole main area.
571 * When considering hot and cold data separation to reduce cleaning overhead,
572 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
574 * In the current design, you should not change the numbers intentionally.
575 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
576 * logs individually according to the underlying devices. (default: 6)
577 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
578 * data and 8 for node logs.
580 #define NR_CURSEG_DATA_TYPE (3)
581 #define NR_CURSEG_NODE_TYPE (3)
582 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
585 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
586 CURSEG_WARM_DATA
, /* data blocks */
587 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
588 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
589 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
590 CURSEG_COLD_NODE
, /* indirect node blocks */
592 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
596 struct completion wait
;
597 struct llist_node llnode
;
601 struct flush_cmd_control
{
602 struct task_struct
*f2fs_issue_flush
; /* flush thread */
603 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
604 struct llist_head issue_list
; /* list for command issue */
605 struct llist_node
*dispatch_list
; /* list for command dispatch */
608 struct f2fs_sm_info
{
609 struct sit_info
*sit_info
; /* whole segment information */
610 struct free_segmap_info
*free_info
; /* free segment information */
611 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
612 struct curseg_info
*curseg_array
; /* active segment information */
614 block_t seg0_blkaddr
; /* block address of 0'th segment */
615 block_t main_blkaddr
; /* start block address of main area */
616 block_t ssa_blkaddr
; /* start block address of SSA area */
618 unsigned int segment_count
; /* total # of segments */
619 unsigned int main_segments
; /* # of segments in main area */
620 unsigned int reserved_segments
; /* # of reserved segments */
621 unsigned int ovp_segments
; /* # of overprovision segments */
623 /* a threshold to reclaim prefree segments */
624 unsigned int rec_prefree_segments
;
626 /* for small discard management */
627 struct list_head discard_list
; /* 4KB discard list */
628 int nr_discards
; /* # of discards in the list */
629 int max_discards
; /* max. discards to be issued */
631 /* for batched trimming */
632 unsigned int trim_sections
; /* # of sections to trim */
634 struct list_head sit_entry_set
; /* sit entry set list */
636 unsigned int ipu_policy
; /* in-place-update policy */
637 unsigned int min_ipu_util
; /* in-place-update threshold */
638 unsigned int min_fsync_blocks
; /* threshold for fsync */
640 /* for flush command control */
641 struct flush_cmd_control
*cmd_control_info
;
649 * COUNT_TYPE for monitoring
651 * f2fs monitors the number of several block types such as on-writeback,
652 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
665 * The below are the page types of bios used in submit_bio().
666 * The available types are:
667 * DATA User data pages. It operates as async mode.
668 * NODE Node pages. It operates as async mode.
669 * META FS metadata pages such as SIT, NAT, CP.
670 * NR_PAGE_TYPE The number of page types.
671 * META_FLUSH Make sure the previous pages are written
672 * with waiting the bio's completion
673 * ... Only can be used with META.
675 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
682 INMEM
, /* the below types are used by tracepoints only. */
688 struct f2fs_io_info
{
689 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
690 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
691 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
692 block_t blk_addr
; /* block address to be written */
693 struct page
*page
; /* page to be written */
694 struct page
*encrypted_page
; /* encrypted page */
697 #define is_read_io(rw) (((rw) & 1) == READ)
698 struct f2fs_bio_info
{
699 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
700 struct bio
*bio
; /* bios to merge */
701 sector_t last_block_in_bio
; /* last block number */
702 struct f2fs_io_info fio
; /* store buffered io info. */
703 struct rw_semaphore io_rwsem
; /* blocking op for bio */
707 DIR_INODE
, /* for dirty dir inode */
708 FILE_INODE
, /* for dirty regular/symlink inode */
712 /* for inner inode cache management */
713 struct inode_management
{
714 struct radix_tree_root ino_root
; /* ino entry array */
715 spinlock_t ino_lock
; /* for ino entry lock */
716 struct list_head ino_list
; /* inode list head */
717 unsigned long ino_num
; /* number of entries */
720 /* For s_flag in struct f2fs_sb_info */
722 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
723 SBI_IS_CLOSE
, /* specify unmounting */
724 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
725 SBI_POR_DOING
, /* recovery is doing or not */
734 struct f2fs_sb_info
{
735 struct super_block
*sb
; /* pointer to VFS super block */
736 struct proc_dir_entry
*s_proc
; /* proc entry */
737 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
738 int valid_super_block
; /* valid super block no */
739 int s_flag
; /* flags for sbi */
741 /* for node-related operations */
742 struct f2fs_nm_info
*nm_info
; /* node manager */
743 struct inode
*node_inode
; /* cache node blocks */
745 /* for segment-related operations */
746 struct f2fs_sm_info
*sm_info
; /* segment manager */
748 /* for bio operations */
749 struct f2fs_bio_info read_io
; /* for read bios */
750 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
753 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
754 struct inode
*meta_inode
; /* cache meta blocks */
755 struct mutex cp_mutex
; /* checkpoint procedure lock */
756 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
757 struct rw_semaphore node_write
; /* locking node writes */
758 struct mutex writepages
; /* mutex for writepages() */
759 wait_queue_head_t cp_wait
;
760 unsigned long last_time
[MAX_TIME
]; /* to store time in jiffies */
761 long interval_time
[MAX_TIME
]; /* to store thresholds */
763 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
765 /* for orphan inode, use 0'th array */
766 unsigned int max_orphans
; /* max orphan inodes */
768 /* for inode management */
769 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
770 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
772 /* for extent tree cache */
773 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
774 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
775 struct list_head extent_list
; /* lru list for shrinker */
776 spinlock_t extent_lock
; /* locking extent lru list */
777 atomic_t total_ext_tree
; /* extent tree count */
778 struct list_head zombie_list
; /* extent zombie tree list */
779 atomic_t total_zombie_tree
; /* extent zombie tree count */
780 atomic_t total_ext_node
; /* extent info count */
782 /* basic filesystem units */
783 unsigned int log_sectors_per_block
; /* log2 sectors per block */
784 unsigned int log_blocksize
; /* log2 block size */
785 unsigned int blocksize
; /* block size */
786 unsigned int root_ino_num
; /* root inode number*/
787 unsigned int node_ino_num
; /* node inode number*/
788 unsigned int meta_ino_num
; /* meta inode number*/
789 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
790 unsigned int blocks_per_seg
; /* blocks per segment */
791 unsigned int segs_per_sec
; /* segments per section */
792 unsigned int secs_per_zone
; /* sections per zone */
793 unsigned int total_sections
; /* total section count */
794 unsigned int total_node_count
; /* total node block count */
795 unsigned int total_valid_node_count
; /* valid node block count */
796 unsigned int total_valid_inode_count
; /* valid inode count */
797 loff_t max_file_blocks
; /* max block index of file */
798 int active_logs
; /* # of active logs */
799 int dir_level
; /* directory level */
801 block_t user_block_count
; /* # of user blocks */
802 block_t total_valid_block_count
; /* # of valid blocks */
803 block_t alloc_valid_block_count
; /* # of allocated blocks */
804 block_t discard_blks
; /* discard command candidats */
805 block_t last_valid_block_count
; /* for recovery */
806 u32 s_next_generation
; /* for NFS support */
807 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
809 struct f2fs_mount_info mount_opt
; /* mount options */
811 /* for cleaning operations */
812 struct mutex gc_mutex
; /* mutex for GC */
813 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
814 unsigned int cur_victim_sec
; /* current victim section num */
816 /* maximum # of trials to find a victim segment for SSR and GC */
817 unsigned int max_victim_search
;
820 * for stat information.
821 * one is for the LFS mode, and the other is for the SSR mode.
823 #ifdef CONFIG_F2FS_STAT_FS
824 struct f2fs_stat_info
*stat_info
; /* FS status information */
825 unsigned int segment_count
[2]; /* # of allocated segments */
826 unsigned int block_count
[2]; /* # of allocated blocks */
827 atomic_t inplace_count
; /* # of inplace update */
828 atomic64_t total_hit_ext
; /* # of lookup extent cache */
829 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
830 atomic64_t read_hit_largest
; /* # of hit largest extent node */
831 atomic64_t read_hit_cached
; /* # of hit cached extent node */
832 atomic_t inline_xattr
; /* # of inline_xattr inodes */
833 atomic_t inline_inode
; /* # of inline_data inodes */
834 atomic_t inline_dir
; /* # of inline_dentry inodes */
835 int bg_gc
; /* background gc calls */
836 unsigned int ndirty_inode
[NR_INODE_TYPE
]; /* # of dirty inodes */
838 unsigned int last_victim
[2]; /* last victim segment # */
839 spinlock_t stat_lock
; /* lock for stat operations */
841 /* For sysfs suppport */
842 struct kobject s_kobj
;
843 struct completion s_kobj_unregister
;
845 /* For shrinker support */
846 struct list_head s_list
;
847 struct mutex umount_mutex
;
848 unsigned int shrinker_run_no
;
850 /* For write statistics */
851 u64 sectors_written_start
;
855 /* For write statistics. Suppose sector size is 512 bytes,
856 * and the return value is in kbytes. s is of struct f2fs_sb_info.
858 #define BD_PART_WRITTEN(s) \
859 (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
860 s->sectors_written_start) >> 1)
862 static inline void f2fs_update_time(struct f2fs_sb_info
*sbi
, int type
)
864 sbi
->last_time
[type
] = jiffies
;
867 static inline bool f2fs_time_over(struct f2fs_sb_info
*sbi
, int type
)
869 struct timespec ts
= {sbi
->interval_time
[type
], 0};
870 unsigned long interval
= timespec_to_jiffies(&ts
);
872 return time_after(jiffies
, sbi
->last_time
[type
] + interval
);
875 static inline bool is_idle(struct f2fs_sb_info
*sbi
)
877 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
878 struct request_queue
*q
= bdev_get_queue(bdev
);
879 struct request_list
*rl
= &q
->root_rl
;
881 if (rl
->count
[BLK_RW_SYNC
] || rl
->count
[BLK_RW_ASYNC
])
884 return f2fs_time_over(sbi
, REQ_TIME
);
890 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
892 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
895 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
897 return sb
->s_fs_info
;
900 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
902 return F2FS_SB(inode
->i_sb
);
905 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
907 return F2FS_I_SB(mapping
->host
);
910 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
912 return F2FS_M_SB(page
->mapping
);
915 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
917 return (struct f2fs_super_block
*)(sbi
->raw_super
);
920 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
922 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
925 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
927 return (struct f2fs_node
*)page_address(page
);
930 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
932 return &((struct f2fs_node
*)page_address(page
))->i
;
935 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
937 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
940 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
942 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
945 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
947 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
950 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
952 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
955 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
957 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
960 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
962 return sbi
->meta_inode
->i_mapping
;
965 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
967 return sbi
->node_inode
->i_mapping
;
970 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
972 return sbi
->s_flag
& (0x01 << type
);
975 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
977 sbi
->s_flag
|= (0x01 << type
);
980 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
982 sbi
->s_flag
&= ~(0x01 << type
);
985 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
987 return le64_to_cpu(cp
->checkpoint_ver
);
990 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
992 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
993 return ckpt_flags
& f
;
996 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
998 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1000 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1003 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
1005 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
1007 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
1010 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
1012 down_read(&sbi
->cp_rwsem
);
1015 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
1017 up_read(&sbi
->cp_rwsem
);
1020 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
1022 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
1025 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
1027 up_write(&sbi
->cp_rwsem
);
1030 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
1032 int reason
= CP_SYNC
;
1034 if (test_opt(sbi
, FASTBOOT
))
1035 reason
= CP_FASTBOOT
;
1036 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
1041 static inline bool __remain_node_summaries(int reason
)
1043 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
1046 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
1048 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
1049 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1053 * Check whether the given nid is within node id range.
1055 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1057 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1059 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1064 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1067 * Check whether the inode has blocks or not
1069 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1071 if (F2FS_I(inode
)->i_xattr_nid
)
1072 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1074 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1077 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1079 return ofs
== XATTR_NODE_OFFSET
;
1082 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1083 struct inode
*inode
, blkcnt_t count
)
1085 block_t valid_block_count
;
1087 spin_lock(&sbi
->stat_lock
);
1089 sbi
->total_valid_block_count
+ (block_t
)count
;
1090 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1091 spin_unlock(&sbi
->stat_lock
);
1094 inode
->i_blocks
+= count
;
1095 sbi
->total_valid_block_count
= valid_block_count
;
1096 sbi
->alloc_valid_block_count
+= (block_t
)count
;
1097 spin_unlock(&sbi
->stat_lock
);
1101 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1102 struct inode
*inode
,
1105 spin_lock(&sbi
->stat_lock
);
1106 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1107 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1108 inode
->i_blocks
-= count
;
1109 sbi
->total_valid_block_count
-= (block_t
)count
;
1110 spin_unlock(&sbi
->stat_lock
);
1113 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1115 atomic_inc(&sbi
->nr_pages
[count_type
]);
1116 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1119 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1121 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
1122 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1123 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1126 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1128 atomic_dec(&sbi
->nr_pages
[count_type
]);
1131 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1133 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1134 !S_ISLNK(inode
->i_mode
))
1137 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
1138 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1139 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1142 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1144 return atomic_read(&sbi
->nr_pages
[count_type
]);
1147 static inline int get_dirty_pages(struct inode
*inode
)
1149 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
1152 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1154 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1155 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
1156 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
1159 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1161 return sbi
->total_valid_block_count
;
1164 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1166 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1168 /* return NAT or SIT bitmap */
1169 if (flag
== NAT_BITMAP
)
1170 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1171 else if (flag
== SIT_BITMAP
)
1172 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1177 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1179 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1182 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1184 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1187 if (__cp_payload(sbi
) > 0) {
1188 if (flag
== NAT_BITMAP
)
1189 return &ckpt
->sit_nat_version_bitmap
;
1191 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1193 offset
= (flag
== NAT_BITMAP
) ?
1194 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1195 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1199 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1202 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1203 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1205 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1208 * odd numbered checkpoint should at cp segment 0
1209 * and even segment must be at cp segment 1
1211 if (!(ckpt_version
& 1))
1212 start_addr
+= sbi
->blocks_per_seg
;
1217 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1219 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1222 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1223 struct inode
*inode
)
1225 block_t valid_block_count
;
1226 unsigned int valid_node_count
;
1228 spin_lock(&sbi
->stat_lock
);
1230 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1231 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1232 spin_unlock(&sbi
->stat_lock
);
1236 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1237 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1238 spin_unlock(&sbi
->stat_lock
);
1245 sbi
->alloc_valid_block_count
++;
1246 sbi
->total_valid_node_count
++;
1247 sbi
->total_valid_block_count
++;
1248 spin_unlock(&sbi
->stat_lock
);
1253 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1254 struct inode
*inode
)
1256 spin_lock(&sbi
->stat_lock
);
1258 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1259 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1260 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1263 sbi
->total_valid_node_count
--;
1264 sbi
->total_valid_block_count
--;
1266 spin_unlock(&sbi
->stat_lock
);
1269 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1271 return sbi
->total_valid_node_count
;
1274 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1276 spin_lock(&sbi
->stat_lock
);
1277 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1278 sbi
->total_valid_inode_count
++;
1279 spin_unlock(&sbi
->stat_lock
);
1282 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1284 spin_lock(&sbi
->stat_lock
);
1285 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1286 sbi
->total_valid_inode_count
--;
1287 spin_unlock(&sbi
->stat_lock
);
1290 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1292 return sbi
->total_valid_inode_count
;
1295 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1296 pgoff_t index
, bool for_write
)
1299 return grab_cache_page(mapping
, index
);
1300 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1303 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1305 char *src_kaddr
= kmap(src
);
1306 char *dst_kaddr
= kmap(dst
);
1308 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1313 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1319 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1322 page_cache_release(page
);
1325 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1328 f2fs_put_page(dn
->node_page
, 1);
1329 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1330 f2fs_put_page(dn
->inode_page
, 0);
1331 dn
->node_page
= NULL
;
1332 dn
->inode_page
= NULL
;
1335 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1338 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1341 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1346 entry
= kmem_cache_alloc(cachep
, flags
);
1348 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1352 static inline struct bio
*f2fs_bio_alloc(int npages
)
1356 /* No failure on bio allocation */
1357 bio
= bio_alloc(GFP_NOIO
, npages
);
1359 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1363 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1364 unsigned long index
, void *item
)
1366 while (radix_tree_insert(root
, index
, item
))
1370 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1372 static inline bool IS_INODE(struct page
*page
)
1374 struct f2fs_node
*p
= F2FS_NODE(page
);
1375 return RAW_IS_INODE(p
);
1378 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1380 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1383 static inline block_t
datablock_addr(struct page
*node_page
,
1384 unsigned int offset
)
1386 struct f2fs_node
*raw_node
;
1388 raw_node
= F2FS_NODE(node_page
);
1389 addr_array
= blkaddr_in_node(raw_node
);
1390 return le32_to_cpu(addr_array
[offset
]);
1393 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1398 mask
= 1 << (7 - (nr
& 0x07));
1399 return mask
& *addr
;
1402 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1407 mask
= 1 << (7 - (nr
& 0x07));
1411 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1416 mask
= 1 << (7 - (nr
& 0x07));
1420 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1426 mask
= 1 << (7 - (nr
& 0x07));
1432 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1438 mask
= 1 << (7 - (nr
& 0x07));
1444 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1449 mask
= 1 << (7 - (nr
& 0x07));
1453 /* used for f2fs_inode_info->flags */
1455 FI_NEW_INODE
, /* indicate newly allocated inode */
1456 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1457 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1458 FI_INC_LINK
, /* need to increment i_nlink */
1459 FI_ACL_MODE
, /* indicate acl mode */
1460 FI_NO_ALLOC
, /* should not allocate any blocks */
1461 FI_FREE_NID
, /* free allocated nide */
1462 FI_UPDATE_DIR
, /* should update inode block for consistency */
1463 FI_DELAY_IPUT
, /* used for the recovery */
1464 FI_NO_EXTENT
, /* not to use the extent cache */
1465 FI_INLINE_XATTR
, /* used for inline xattr */
1466 FI_INLINE_DATA
, /* used for inline data*/
1467 FI_INLINE_DENTRY
, /* used for inline dentry */
1468 FI_APPEND_WRITE
, /* inode has appended data */
1469 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1470 FI_NEED_IPU
, /* used for ipu per file */
1471 FI_ATOMIC_FILE
, /* indicate atomic file */
1472 FI_VOLATILE_FILE
, /* indicate volatile file */
1473 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1474 FI_DROP_CACHE
, /* drop dirty page cache */
1475 FI_DATA_EXIST
, /* indicate data exists */
1476 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1477 FI_DO_DEFRAG
, /* indicate defragment is running */
1478 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1481 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1483 if (!test_bit(flag
, &fi
->flags
))
1484 set_bit(flag
, &fi
->flags
);
1487 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1489 return test_bit(flag
, &fi
->flags
);
1492 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1494 if (test_bit(flag
, &fi
->flags
))
1495 clear_bit(flag
, &fi
->flags
);
1498 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1500 fi
->i_acl_mode
= mode
;
1501 set_inode_flag(fi
, FI_ACL_MODE
);
1504 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1505 struct f2fs_inode
*ri
)
1507 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1508 set_inode_flag(fi
, FI_INLINE_XATTR
);
1509 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1510 set_inode_flag(fi
, FI_INLINE_DATA
);
1511 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1512 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1513 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1514 set_inode_flag(fi
, FI_DATA_EXIST
);
1515 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1516 set_inode_flag(fi
, FI_INLINE_DOTS
);
1519 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1520 struct f2fs_inode
*ri
)
1524 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1525 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1526 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1527 ri
->i_inline
|= F2FS_INLINE_DATA
;
1528 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1529 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1530 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1531 ri
->i_inline
|= F2FS_DATA_EXIST
;
1532 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1533 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1536 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1538 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1541 static inline unsigned int addrs_per_inode(struct inode
*inode
)
1543 if (f2fs_has_inline_xattr(inode
))
1544 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1545 return DEF_ADDRS_PER_INODE
;
1548 static inline void *inline_xattr_addr(struct page
*page
)
1550 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1551 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1552 F2FS_INLINE_XATTR_ADDRS
]);
1555 static inline int inline_xattr_size(struct inode
*inode
)
1557 if (f2fs_has_inline_xattr(inode
))
1558 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1563 static inline int f2fs_has_inline_data(struct inode
*inode
)
1565 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1568 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1570 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1571 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1574 static inline int f2fs_exist_data(struct inode
*inode
)
1576 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1579 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1581 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1584 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1586 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1589 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1591 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1594 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1596 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1599 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1601 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1604 static inline void *inline_data_addr(struct page
*page
)
1606 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1607 return (void *)&(ri
->i_addr
[1]);
1610 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1612 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1615 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1617 if (!f2fs_has_inline_dentry(dir
))
1621 static inline int is_file(struct inode
*inode
, int type
)
1623 return F2FS_I(inode
)->i_advise
& type
;
1626 static inline void set_file(struct inode
*inode
, int type
)
1628 F2FS_I(inode
)->i_advise
|= type
;
1631 static inline void clear_file(struct inode
*inode
, int type
)
1633 F2FS_I(inode
)->i_advise
&= ~type
;
1636 static inline int f2fs_readonly(struct super_block
*sb
)
1638 return sb
->s_flags
& MS_RDONLY
;
1641 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1643 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1646 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1648 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1649 sbi
->sb
->s_flags
|= MS_RDONLY
;
1652 static inline bool is_dot_dotdot(const struct qstr
*str
)
1654 if (str
->len
== 1 && str
->name
[0] == '.')
1657 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1663 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1665 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1666 is_inode_flag_set(F2FS_I(inode
), FI_NO_EXTENT
))
1669 return S_ISREG(inode
->i_mode
);
1672 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1676 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1678 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1682 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1686 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1688 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1692 #define get_inode_mode(i) \
1693 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1694 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1696 /* get offset of first page in next direct node */
1697 #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1698 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1699 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1700 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
1705 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1706 void truncate_data_blocks(struct dnode_of_data
*);
1707 int truncate_blocks(struct inode
*, u64
, bool);
1708 int f2fs_truncate(struct inode
*, bool);
1709 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1710 int f2fs_setattr(struct dentry
*, struct iattr
*);
1711 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1712 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1713 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1714 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1719 void f2fs_set_inode_flags(struct inode
*);
1720 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1721 int try_to_free_nats(struct f2fs_sb_info
*, int);
1722 int update_inode(struct inode
*, struct page
*);
1723 int update_inode_page(struct inode
*);
1724 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1725 void f2fs_evict_inode(struct inode
*);
1726 void handle_failed_inode(struct inode
*);
1731 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1736 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1737 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1739 struct f2fs_dir_entry
*find_target_dentry(struct f2fs_filename
*,
1740 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1741 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1742 unsigned int, struct f2fs_str
*);
1743 void do_make_empty_dir(struct inode
*, struct inode
*,
1744 struct f2fs_dentry_ptr
*);
1745 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1746 const struct qstr
*, struct page
*);
1747 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1748 int room_for_filename(const void *, int, int);
1749 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1750 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1752 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1753 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1754 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1755 struct page
*, struct inode
*);
1756 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1757 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1758 const struct qstr
*, f2fs_hash_t
, unsigned int);
1759 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1761 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1763 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1764 bool f2fs_empty_dir(struct inode
*);
1766 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1768 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1769 inode
, inode
->i_ino
, inode
->i_mode
);
1775 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1776 int f2fs_sync_fs(struct super_block
*, int);
1777 extern __printf(3, 4)
1778 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1783 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1788 struct dnode_of_data
;
1791 bool available_free_memory(struct f2fs_sb_info
*, int);
1792 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1793 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1794 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1795 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1796 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1797 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1798 int truncate_xattr_node(struct inode
*, struct page
*);
1799 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1800 int remove_inode_page(struct inode
*);
1801 struct page
*new_inode_page(struct inode
*);
1802 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1803 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1804 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1805 struct page
*get_node_page_ra(struct page
*, int);
1806 void sync_inode_page(struct dnode_of_data
*);
1807 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1808 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1809 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1810 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1811 int try_to_free_nids(struct f2fs_sb_info
*, int);
1812 void recover_inline_xattr(struct inode
*, struct page
*);
1813 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1814 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1815 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1816 struct f2fs_summary_block
*);
1817 void flush_nat_entries(struct f2fs_sb_info
*);
1818 int build_node_manager(struct f2fs_sb_info
*);
1819 void destroy_node_manager(struct f2fs_sb_info
*);
1820 int __init
create_node_manager_caches(void);
1821 void destroy_node_manager_caches(void);
1826 void register_inmem_page(struct inode
*, struct page
*);
1827 int commit_inmem_pages(struct inode
*, bool);
1828 void f2fs_balance_fs(struct f2fs_sb_info
*, bool);
1829 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1830 int f2fs_issue_flush(struct f2fs_sb_info
*);
1831 int create_flush_cmd_control(struct f2fs_sb_info
*);
1832 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1833 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1834 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
1835 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1836 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1837 void release_discard_addrs(struct f2fs_sb_info
*);
1838 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1839 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1840 void allocate_new_segments(struct f2fs_sb_info
*);
1841 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1842 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1843 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1844 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1845 void write_node_page(unsigned int, struct f2fs_io_info
*);
1846 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1847 void rewrite_data_page(struct f2fs_io_info
*);
1848 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
1849 block_t
, block_t
, unsigned char, bool);
1850 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1851 block_t
, block_t
*, struct f2fs_summary
*, int);
1852 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
, bool);
1853 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
1854 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1855 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1856 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1857 int, unsigned int, int);
1858 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1859 int build_segment_manager(struct f2fs_sb_info
*);
1860 void destroy_segment_manager(struct f2fs_sb_info
*);
1861 int __init
create_segment_manager_caches(void);
1862 void destroy_segment_manager_caches(void);
1867 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1868 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1869 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
1870 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
1871 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
1872 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1873 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1874 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1875 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1876 void release_ino_entry(struct f2fs_sb_info
*);
1877 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1878 int acquire_orphan_inode(struct f2fs_sb_info
*);
1879 void release_orphan_inode(struct f2fs_sb_info
*);
1880 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1881 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1882 int recover_orphan_inodes(struct f2fs_sb_info
*);
1883 int get_valid_checkpoint(struct f2fs_sb_info
*);
1884 void update_dirty_page(struct inode
*, struct page
*);
1885 void add_dirty_dir_inode(struct inode
*);
1886 void remove_dirty_inode(struct inode
*);
1887 int sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
1888 int write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1889 void init_ino_entry_info(struct f2fs_sb_info
*);
1890 int __init
create_checkpoint_caches(void);
1891 void destroy_checkpoint_caches(void);
1896 bool is_merged_page(struct f2fs_sb_info
*, struct page
*, enum page_type
);
1897 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1898 int f2fs_submit_page_bio(struct f2fs_io_info
*);
1899 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
1900 void set_data_blkaddr(struct dnode_of_data
*);
1901 int reserve_new_block(struct dnode_of_data
*);
1902 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
1903 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1904 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
1905 struct page
*find_data_page(struct inode
*, pgoff_t
);
1906 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
1907 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1908 int do_write_data_page(struct f2fs_io_info
*);
1909 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
1910 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1911 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1912 int f2fs_release_page(struct page
*, gfp_t
);
1917 int start_gc_thread(struct f2fs_sb_info
*);
1918 void stop_gc_thread(struct f2fs_sb_info
*);
1919 block_t
start_bidx_of_node(unsigned int, struct inode
*);
1920 int f2fs_gc(struct f2fs_sb_info
*, bool);
1921 void build_gc_manager(struct f2fs_sb_info
*);
1926 int recover_fsync_data(struct f2fs_sb_info
*);
1927 bool space_for_roll_forward(struct f2fs_sb_info
*);
1932 #ifdef CONFIG_F2FS_STAT_FS
1933 struct f2fs_stat_info
{
1934 struct list_head stat_list
;
1935 struct f2fs_sb_info
*sbi
;
1936 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1937 int main_area_segs
, main_area_sections
, main_area_zones
;
1938 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
1939 unsigned long long hit_total
, total_ext
;
1940 int ext_tree
, zombie_tree
, ext_node
;
1941 int ndirty_node
, ndirty_meta
;
1942 int ndirty_dent
, ndirty_dirs
, ndirty_data
, ndirty_files
;
1943 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1944 int total_count
, utilization
;
1945 int bg_gc
, inmem_pages
, wb_pages
;
1946 int inline_xattr
, inline_inode
, inline_dir
;
1947 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1948 unsigned int bimodal
, avg_vblocks
;
1949 int util_free
, util_valid
, util_invalid
;
1950 int rsvd_segs
, overp_segs
;
1951 int dirty_count
, node_pages
, meta_pages
;
1952 int prefree_count
, call_count
, cp_count
, bg_cp_count
;
1953 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1954 int bg_node_segs
, bg_data_segs
;
1955 int tot_blks
, data_blks
, node_blks
;
1956 int bg_data_blks
, bg_node_blks
;
1957 int curseg
[NR_CURSEG_TYPE
];
1958 int cursec
[NR_CURSEG_TYPE
];
1959 int curzone
[NR_CURSEG_TYPE
];
1961 unsigned int segment_count
[2];
1962 unsigned int block_count
[2];
1963 unsigned int inplace_count
;
1964 unsigned long long base_mem
, cache_mem
, page_mem
;
1967 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1969 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1972 #define stat_inc_cp_count(si) ((si)->cp_count++)
1973 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
1974 #define stat_inc_call_count(si) ((si)->call_count++)
1975 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1976 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
1977 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
1978 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1979 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1980 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1981 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
1982 #define stat_inc_inline_xattr(inode) \
1984 if (f2fs_has_inline_xattr(inode)) \
1985 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1987 #define stat_dec_inline_xattr(inode) \
1989 if (f2fs_has_inline_xattr(inode)) \
1990 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1992 #define stat_inc_inline_inode(inode) \
1994 if (f2fs_has_inline_data(inode)) \
1995 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1997 #define stat_dec_inline_inode(inode) \
1999 if (f2fs_has_inline_data(inode)) \
2000 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2002 #define stat_inc_inline_dir(inode) \
2004 if (f2fs_has_inline_dentry(inode)) \
2005 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2007 #define stat_dec_inline_dir(inode) \
2009 if (f2fs_has_inline_dentry(inode)) \
2010 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2012 #define stat_inc_seg_type(sbi, curseg) \
2013 ((sbi)->segment_count[(curseg)->alloc_type]++)
2014 #define stat_inc_block_count(sbi, curseg) \
2015 ((sbi)->block_count[(curseg)->alloc_type]++)
2016 #define stat_inc_inplace_blocks(sbi) \
2017 (atomic_inc(&(sbi)->inplace_count))
2018 #define stat_inc_seg_count(sbi, type, gc_type) \
2020 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2022 if (type == SUM_TYPE_DATA) { \
2024 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2027 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2031 #define stat_inc_tot_blk_count(si, blks) \
2032 (si->tot_blks += (blks))
2034 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
2036 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2037 stat_inc_tot_blk_count(si, blks); \
2038 si->data_blks += (blks); \
2039 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
2042 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
2044 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2045 stat_inc_tot_blk_count(si, blks); \
2046 si->node_blks += (blks); \
2047 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
2050 int f2fs_build_stats(struct f2fs_sb_info
*);
2051 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2052 int __init
f2fs_create_root_stats(void);
2053 void f2fs_destroy_root_stats(void);
2055 #define stat_inc_cp_count(si)
2056 #define stat_inc_bg_cp_count(si)
2057 #define stat_inc_call_count(si)
2058 #define stat_inc_bggc_count(si)
2059 #define stat_inc_dirty_inode(sbi, type)
2060 #define stat_dec_dirty_inode(sbi, type)
2061 #define stat_inc_total_hit(sb)
2062 #define stat_inc_rbtree_node_hit(sb)
2063 #define stat_inc_largest_node_hit(sbi)
2064 #define stat_inc_cached_node_hit(sbi)
2065 #define stat_inc_inline_xattr(inode)
2066 #define stat_dec_inline_xattr(inode)
2067 #define stat_inc_inline_inode(inode)
2068 #define stat_dec_inline_inode(inode)
2069 #define stat_inc_inline_dir(inode)
2070 #define stat_dec_inline_dir(inode)
2071 #define stat_inc_seg_type(sbi, curseg)
2072 #define stat_inc_block_count(sbi, curseg)
2073 #define stat_inc_inplace_blocks(sbi)
2074 #define stat_inc_seg_count(sbi, type, gc_type)
2075 #define stat_inc_tot_blk_count(si, blks)
2076 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2077 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2079 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2080 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2081 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2082 static inline void f2fs_destroy_root_stats(void) { }
2085 extern const struct file_operations f2fs_dir_operations
;
2086 extern const struct file_operations f2fs_file_operations
;
2087 extern const struct inode_operations f2fs_file_inode_operations
;
2088 extern const struct address_space_operations f2fs_dblock_aops
;
2089 extern const struct address_space_operations f2fs_node_aops
;
2090 extern const struct address_space_operations f2fs_meta_aops
;
2091 extern const struct inode_operations f2fs_dir_inode_operations
;
2092 extern const struct inode_operations f2fs_symlink_inode_operations
;
2093 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2094 extern const struct inode_operations f2fs_special_inode_operations
;
2095 extern struct kmem_cache
*inode_entry_slab
;
2100 bool f2fs_may_inline_data(struct inode
*);
2101 bool f2fs_may_inline_dentry(struct inode
*);
2102 void read_inline_data(struct page
*, struct page
*);
2103 bool truncate_inline_inode(struct page
*, u64
);
2104 int f2fs_read_inline_data(struct inode
*, struct page
*);
2105 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2106 int f2fs_convert_inline_inode(struct inode
*);
2107 int f2fs_write_inline_data(struct inode
*, struct page
*);
2108 bool recover_inline_data(struct inode
*, struct page
*);
2109 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2110 struct f2fs_filename
*, struct page
**);
2111 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
2112 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2113 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2115 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2116 struct inode
*, struct inode
*);
2117 bool f2fs_empty_inline_dir(struct inode
*);
2118 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2120 int f2fs_inline_data_fiemap(struct inode
*,
2121 struct fiemap_extent_info
*, __u64
, __u64
);
2126 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2127 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2128 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2129 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2134 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2135 bool f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2136 unsigned int f2fs_destroy_extent_node(struct inode
*);
2137 void f2fs_destroy_extent_tree(struct inode
*);
2138 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2139 void f2fs_update_extent_cache(struct dnode_of_data
*);
2140 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2141 pgoff_t
, block_t
, unsigned int);
2142 void init_extent_cache_info(struct f2fs_sb_info
*);
2143 int __init
create_extent_cache(void);
2144 void destroy_extent_cache(void);
2149 static inline int f2fs_encrypted_inode(struct inode
*inode
)
2151 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2152 return file_is_encrypt(inode
);
2158 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2160 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2161 file_set_encrypt(inode
);
2165 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2167 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2168 return unlikely(bio
->bi_private
!= NULL
);
2174 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2176 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2177 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2183 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2185 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2186 umode_t mode
= inode
->i_mode
;
2188 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2194 /* crypto_policy.c */
2195 int f2fs_is_child_context_consistent_with_parent(struct inode
*,
2197 int f2fs_inherit_context(struct inode
*, struct inode
*, struct page
*);
2198 int f2fs_process_policy(const struct f2fs_encryption_policy
*, struct inode
*);
2199 int f2fs_get_policy(struct inode
*, struct f2fs_encryption_policy
*);
2202 extern struct kmem_cache
*f2fs_crypt_info_cachep
;
2203 bool f2fs_valid_contents_enc_mode(uint32_t);
2204 uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2205 struct f2fs_crypto_ctx
*f2fs_get_crypto_ctx(struct inode
*);
2206 void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx
*);
2207 struct page
*f2fs_encrypt(struct inode
*, struct page
*);
2208 int f2fs_decrypt(struct f2fs_crypto_ctx
*, struct page
*);
2209 int f2fs_decrypt_one(struct inode
*, struct page
*);
2210 void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx
*, struct bio
*);
2213 void f2fs_free_encryption_info(struct inode
*, struct f2fs_crypt_info
*);
2214 int _f2fs_get_encryption_info(struct inode
*inode
);
2216 /* crypto_fname.c */
2217 bool f2fs_valid_filenames_enc_mode(uint32_t);
2218 u32
f2fs_fname_crypto_round_up(u32
, u32
);
2219 int f2fs_fname_crypto_alloc_buffer(struct inode
*, u32
, struct f2fs_str
*);
2220 int f2fs_fname_disk_to_usr(struct inode
*, f2fs_hash_t
*,
2221 const struct f2fs_str
*, struct f2fs_str
*);
2222 int f2fs_fname_usr_to_disk(struct inode
*, const struct qstr
*,
2225 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2226 void f2fs_restore_and_release_control_page(struct page
**);
2227 void f2fs_restore_control_page(struct page
*);
2229 int __init
f2fs_init_crypto(void);
2230 int f2fs_crypto_initialize(void);
2231 void f2fs_exit_crypto(void);
2233 int f2fs_has_encryption_key(struct inode
*);
2235 static inline int f2fs_get_encryption_info(struct inode
*inode
)
2237 struct f2fs_crypt_info
*ci
= F2FS_I(inode
)->i_crypt_info
;
2240 (ci
->ci_keyring_key
&&
2241 (ci
->ci_keyring_key
->flags
& ((1 << KEY_FLAG_INVALIDATED
) |
2242 (1 << KEY_FLAG_REVOKED
) |
2243 (1 << KEY_FLAG_DEAD
)))))
2244 return _f2fs_get_encryption_info(inode
);
2248 void f2fs_fname_crypto_free_buffer(struct f2fs_str
*);
2249 int f2fs_fname_setup_filename(struct inode
*, const struct qstr
*,
2250 int lookup
, struct f2fs_filename
*);
2251 void f2fs_fname_free_filename(struct f2fs_filename
*);
2253 static inline void f2fs_restore_and_release_control_page(struct page
**p
) { }
2254 static inline void f2fs_restore_control_page(struct page
*p
) { }
2256 static inline int __init
f2fs_init_crypto(void) { return 0; }
2257 static inline void f2fs_exit_crypto(void) { }
2259 static inline int f2fs_has_encryption_key(struct inode
*i
) { return 0; }
2260 static inline int f2fs_get_encryption_info(struct inode
*i
) { return 0; }
2261 static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str
*p
) { }
2263 static inline int f2fs_fname_setup_filename(struct inode
*dir
,
2264 const struct qstr
*iname
,
2265 int lookup
, struct f2fs_filename
*fname
)
2267 memset(fname
, 0, sizeof(struct f2fs_filename
));
2268 fname
->usr_fname
= iname
;
2269 fname
->disk_name
.name
= (unsigned char *)iname
->name
;
2270 fname
->disk_name
.len
= iname
->len
;
2274 static inline void f2fs_fname_free_filename(struct f2fs_filename
*fname
) { }