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>
25 #ifdef CONFIG_F2FS_CHECK_FS
26 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
27 #define f2fs_down_write(x, y) down_write_nest_lock(x, y)
29 #define f2fs_bug_on(sbi, condition) \
31 if (unlikely(condition)) { \
33 set_sbi_flag(sbi, SBI_NEED_FSCK); \
36 #define f2fs_down_write(x, y) down_write(x)
42 #define F2FS_MOUNT_BG_GC 0x00000001
43 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
44 #define F2FS_MOUNT_DISCARD 0x00000004
45 #define F2FS_MOUNT_NOHEAP 0x00000008
46 #define F2FS_MOUNT_XATTR_USER 0x00000010
47 #define F2FS_MOUNT_POSIX_ACL 0x00000020
48 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
49 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
50 #define F2FS_MOUNT_INLINE_DATA 0x00000100
51 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
52 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
53 #define F2FS_MOUNT_NOBARRIER 0x00000800
54 #define F2FS_MOUNT_FASTBOOT 0x00001000
55 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
56 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
57 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
59 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
60 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
61 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
63 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
64 typecheck(unsigned long long, b) && \
65 ((long long)((a) - (b)) > 0))
67 typedef u32 block_t
; /*
68 * should not change u32, since it is the on-disk block
69 * address format, __le32.
73 struct f2fs_mount_info
{
77 #define F2FS_FEATURE_ENCRYPT 0x0001
79 #define F2FS_HAS_FEATURE(sb, mask) \
80 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
81 #define F2FS_SET_FEATURE(sb, mask) \
82 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
83 #define F2FS_CLEAR_FEATURE(sb, mask) \
84 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
86 #define CRCPOLY_LE 0xedb88320
88 static inline __u32
f2fs_crc32(void *buf
, size_t len
)
90 unsigned char *p
= (unsigned char *)buf
;
91 __u32 crc
= F2FS_SUPER_MAGIC
;
96 for (i
= 0; i
< 8; i
++)
97 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
102 static inline bool f2fs_crc_valid(__u32 blk_crc
, void *buf
, size_t buf_size
)
104 return f2fs_crc32(buf
, buf_size
) == blk_crc
;
108 * For checkpoint manager
123 #define DEF_BATCHED_TRIM_SECTIONS 32
124 #define BATCHED_TRIM_SEGMENTS(sbi) \
125 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
126 #define BATCHED_TRIM_BLOCKS(sbi) \
127 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
128 #define DEF_CP_INTERVAL 60 /* 60 secs */
139 * For CP/NAT/SIT/SSA readahead
149 /* for the list of ino */
151 ORPHAN_INO
, /* for orphan ino list */
152 APPEND_INO
, /* for append ino list */
153 UPDATE_INO
, /* for update ino list */
154 MAX_INO_ENTRY
, /* max. list */
158 struct list_head list
; /* list head */
159 nid_t ino
; /* inode number */
162 /* for the list of inodes to be GCed */
164 struct list_head list
; /* list head */
165 struct inode
*inode
; /* vfs inode pointer */
168 /* for the list of blockaddresses to be discarded */
169 struct discard_entry
{
170 struct list_head list
; /* list head */
171 block_t blkaddr
; /* block address to be discarded */
172 int len
; /* # of consecutive blocks of the discard */
175 /* for the list of fsync inodes, used only during recovery */
176 struct fsync_inode_entry
{
177 struct list_head list
; /* list head */
178 struct inode
*inode
; /* vfs inode pointer */
179 block_t blkaddr
; /* block address locating the last fsync */
180 block_t last_dentry
; /* block address locating the last dentry */
181 block_t last_inode
; /* block address locating the last inode */
184 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
185 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
187 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
188 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
189 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
190 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
192 #define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
193 #define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
195 static inline int update_nats_in_cursum(struct f2fs_summary_block
*rs
, int i
)
197 int before
= nats_in_cursum(rs
);
198 rs
->n_nats
= cpu_to_le16(before
+ i
);
202 static inline int update_sits_in_cursum(struct f2fs_summary_block
*rs
, int i
)
204 int before
= sits_in_cursum(rs
);
205 rs
->n_sits
= cpu_to_le16(before
+ i
);
209 static inline bool __has_cursum_space(struct f2fs_summary_block
*sum
, int size
,
212 if (type
== NAT_JOURNAL
)
213 return size
<= MAX_NAT_JENTRIES(sum
);
214 return size
<= MAX_SIT_JENTRIES(sum
);
220 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
221 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
222 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
224 #define F2FS_IOCTL_MAGIC 0xf5
225 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
226 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
227 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
228 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
229 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
230 #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
231 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
232 #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
234 #define F2FS_IOC_SET_ENCRYPTION_POLICY \
235 _IOR('f', 19, struct f2fs_encryption_policy)
236 #define F2FS_IOC_GET_ENCRYPTION_PWSALT \
237 _IOW('f', 20, __u8[16])
238 #define F2FS_IOC_GET_ENCRYPTION_POLICY \
239 _IOW('f', 21, struct f2fs_encryption_policy)
242 * should be same as XFS_IOC_GOINGDOWN.
243 * Flags for going down operation used by FS_IOC_GOINGDOWN
245 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
246 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
247 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
248 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
249 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
251 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
253 * ioctl commands in 32 bit emulation
255 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
256 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
257 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
260 struct f2fs_defragment
{
266 * For INODE and NODE manager
268 /* for directory operations */
274 struct f2fs_filename
{
275 const struct qstr
*usr_fname
;
276 struct f2fs_str disk_name
;
278 #ifdef CONFIG_F2FS_FS_ENCRYPTION
279 struct f2fs_str crypto_buf
;
283 #define FSTR_INIT(n, l) { .name = n, .len = l }
284 #define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
285 #define fname_name(p) ((p)->disk_name.name)
286 #define fname_len(p) ((p)->disk_name.len)
288 struct f2fs_dentry_ptr
{
291 struct f2fs_dir_entry
*dentry
;
292 __u8 (*filename
)[F2FS_SLOT_LEN
];
296 static inline void make_dentry_ptr(struct inode
*inode
,
297 struct f2fs_dentry_ptr
*d
, void *src
, int type
)
302 struct f2fs_dentry_block
*t
= (struct f2fs_dentry_block
*)src
;
303 d
->max
= NR_DENTRY_IN_BLOCK
;
304 d
->bitmap
= &t
->dentry_bitmap
;
305 d
->dentry
= t
->dentry
;
306 d
->filename
= t
->filename
;
308 struct f2fs_inline_dentry
*t
= (struct f2fs_inline_dentry
*)src
;
309 d
->max
= NR_INLINE_DENTRY
;
310 d
->bitmap
= &t
->dentry_bitmap
;
311 d
->dentry
= t
->dentry
;
312 d
->filename
= t
->filename
;
317 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
318 * as its node offset to distinguish from index node blocks.
319 * But some bits are used to mark the node block.
321 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
324 ALLOC_NODE
, /* allocate a new node page if needed */
325 LOOKUP_NODE
, /* look up a node without readahead */
327 * look up a node with readahead called
332 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
334 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
336 /* vector size for gang look-up from extent cache that consists of radix tree */
337 #define EXT_TREE_VEC_SIZE 64
339 /* for in-memory extent cache entry */
340 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
342 /* number of extent info in extent cache we try to shrink */
343 #define EXTENT_CACHE_SHRINK_NUMBER 128
346 unsigned int fofs
; /* start offset in a file */
347 u32 blk
; /* start block address of the extent */
348 unsigned int len
; /* length of the extent */
352 struct rb_node rb_node
; /* rb node located in rb-tree */
353 struct list_head list
; /* node in global extent list of sbi */
354 struct extent_info ei
; /* extent info */
358 nid_t ino
; /* inode number */
359 struct rb_root root
; /* root of extent info rb-tree */
360 struct extent_node
*cached_en
; /* recently accessed extent node */
361 struct extent_info largest
; /* largested extent info */
362 rwlock_t lock
; /* protect extent info rb-tree */
363 atomic_t refcount
; /* reference count of rb-tree */
364 unsigned int count
; /* # of extent node in rb-tree*/
368 * This structure is taken from ext4_map_blocks.
370 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
372 #define F2FS_MAP_NEW (1 << BH_New)
373 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
374 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
375 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
378 struct f2fs_map_blocks
{
382 unsigned int m_flags
;
385 /* for flag in get_data_block */
386 #define F2FS_GET_BLOCK_READ 0
387 #define F2FS_GET_BLOCK_DIO 1
388 #define F2FS_GET_BLOCK_FIEMAP 2
389 #define F2FS_GET_BLOCK_BMAP 3
392 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
394 #define FADVISE_COLD_BIT 0x01
395 #define FADVISE_LOST_PINO_BIT 0x02
396 #define FADVISE_ENCRYPT_BIT 0x04
397 #define FADVISE_ENC_NAME_BIT 0x08
399 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
400 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
401 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
402 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
403 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
404 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
405 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
406 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
407 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
408 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
409 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
411 /* Encryption algorithms */
412 #define F2FS_ENCRYPTION_MODE_INVALID 0
413 #define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
414 #define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
415 #define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
416 #define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
418 #include "f2fs_crypto.h"
420 #define DEF_DIR_LEVEL 0
422 struct f2fs_inode_info
{
423 struct inode vfs_inode
; /* serve a vfs inode */
424 unsigned long i_flags
; /* keep an inode flags for ioctl */
425 unsigned char i_advise
; /* use to give file attribute hints */
426 unsigned char i_dir_level
; /* use for dentry level for large dir */
427 unsigned int i_current_depth
; /* use only in directory structure */
428 unsigned int i_pino
; /* parent inode number */
429 umode_t i_acl_mode
; /* keep file acl mode temporarily */
431 /* Use below internally in f2fs*/
432 unsigned long flags
; /* use to pass per-file flags */
433 struct rw_semaphore i_sem
; /* protect fi info */
434 atomic_t dirty_pages
; /* # of dirty pages */
435 f2fs_hash_t chash
; /* hash value of given file name */
436 unsigned int clevel
; /* maximum level of given file name */
437 nid_t i_xattr_nid
; /* node id that contains xattrs */
438 unsigned long long xattr_ver
; /* cp version of xattr modification */
440 struct list_head dirty_list
; /* linked in global dirty list */
441 struct list_head inmem_pages
; /* inmemory pages managed by f2fs */
442 struct mutex inmem_lock
; /* lock for inmemory pages */
444 struct extent_tree
*extent_tree
; /* cached extent_tree entry */
446 #ifdef CONFIG_F2FS_FS_ENCRYPTION
447 /* Encryption params */
448 struct f2fs_crypt_info
*i_crypt_info
;
452 static inline void get_extent_info(struct extent_info
*ext
,
453 struct f2fs_extent i_ext
)
455 ext
->fofs
= le32_to_cpu(i_ext
.fofs
);
456 ext
->blk
= le32_to_cpu(i_ext
.blk
);
457 ext
->len
= le32_to_cpu(i_ext
.len
);
460 static inline void set_raw_extent(struct extent_info
*ext
,
461 struct f2fs_extent
*i_ext
)
463 i_ext
->fofs
= cpu_to_le32(ext
->fofs
);
464 i_ext
->blk
= cpu_to_le32(ext
->blk
);
465 i_ext
->len
= cpu_to_le32(ext
->len
);
468 static inline void set_extent_info(struct extent_info
*ei
, unsigned int fofs
,
469 u32 blk
, unsigned int len
)
476 static inline bool __is_extent_same(struct extent_info
*ei1
,
477 struct extent_info
*ei2
)
479 return (ei1
->fofs
== ei2
->fofs
&& ei1
->blk
== ei2
->blk
&&
480 ei1
->len
== ei2
->len
);
483 static inline bool __is_extent_mergeable(struct extent_info
*back
,
484 struct extent_info
*front
)
486 return (back
->fofs
+ back
->len
== front
->fofs
&&
487 back
->blk
+ back
->len
== front
->blk
);
490 static inline bool __is_back_mergeable(struct extent_info
*cur
,
491 struct extent_info
*back
)
493 return __is_extent_mergeable(back
, cur
);
496 static inline bool __is_front_mergeable(struct extent_info
*cur
,
497 struct extent_info
*front
)
499 return __is_extent_mergeable(cur
, front
);
502 static inline void __try_update_largest_extent(struct extent_tree
*et
,
503 struct extent_node
*en
)
505 if (en
->ei
.len
> et
->largest
.len
)
506 et
->largest
= en
->ei
;
509 struct f2fs_nm_info
{
510 block_t nat_blkaddr
; /* base disk address of NAT */
511 nid_t max_nid
; /* maximum possible node ids */
512 nid_t available_nids
; /* maximum available node ids */
513 nid_t next_scan_nid
; /* the next nid to be scanned */
514 unsigned int ram_thresh
; /* control the memory footprint */
515 unsigned int ra_nid_pages
; /* # of nid pages to be readaheaded */
517 /* NAT cache management */
518 struct radix_tree_root nat_root
;/* root of the nat entry cache */
519 struct radix_tree_root nat_set_root
;/* root of the nat set cache */
520 struct rw_semaphore nat_tree_lock
; /* protect nat_tree_lock */
521 struct list_head nat_entries
; /* cached nat entry list (clean) */
522 unsigned int nat_cnt
; /* the # of cached nat entries */
523 unsigned int dirty_nat_cnt
; /* total num of nat entries in set */
525 /* free node ids management */
526 struct radix_tree_root free_nid_root
;/* root of the free_nid cache */
527 struct list_head free_nid_list
; /* a list for free nids */
528 spinlock_t free_nid_list_lock
; /* protect free nid list */
529 unsigned int fcnt
; /* the number of free node id */
530 struct mutex build_lock
; /* lock for build free nids */
533 char *nat_bitmap
; /* NAT bitmap pointer */
534 int bitmap_size
; /* bitmap size */
538 * this structure is used as one of function parameters.
539 * all the information are dedicated to a given direct node block determined
540 * by the data offset in a file.
542 struct dnode_of_data
{
543 struct inode
*inode
; /* vfs inode pointer */
544 struct page
*inode_page
; /* its inode page, NULL is possible */
545 struct page
*node_page
; /* cached direct node page */
546 nid_t nid
; /* node id of the direct node block */
547 unsigned int ofs_in_node
; /* data offset in the node page */
548 bool inode_page_locked
; /* inode page is locked or not */
549 block_t data_blkaddr
; /* block address of the node block */
552 static inline void set_new_dnode(struct dnode_of_data
*dn
, struct inode
*inode
,
553 struct page
*ipage
, struct page
*npage
, nid_t nid
)
555 memset(dn
, 0, sizeof(*dn
));
557 dn
->inode_page
= ipage
;
558 dn
->node_page
= npage
;
565 * By default, there are 6 active log areas across the whole main area.
566 * When considering hot and cold data separation to reduce cleaning overhead,
567 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
569 * In the current design, you should not change the numbers intentionally.
570 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
571 * logs individually according to the underlying devices. (default: 6)
572 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
573 * data and 8 for node logs.
575 #define NR_CURSEG_DATA_TYPE (3)
576 #define NR_CURSEG_NODE_TYPE (3)
577 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
580 CURSEG_HOT_DATA
= 0, /* directory entry blocks */
581 CURSEG_WARM_DATA
, /* data blocks */
582 CURSEG_COLD_DATA
, /* multimedia or GCed data blocks */
583 CURSEG_HOT_NODE
, /* direct node blocks of directory files */
584 CURSEG_WARM_NODE
, /* direct node blocks of normal files */
585 CURSEG_COLD_NODE
, /* indirect node blocks */
587 CURSEG_DIRECT_IO
, /* to use for the direct IO path */
591 struct completion wait
;
592 struct llist_node llnode
;
596 struct flush_cmd_control
{
597 struct task_struct
*f2fs_issue_flush
; /* flush thread */
598 wait_queue_head_t flush_wait_queue
; /* waiting queue for wake-up */
599 struct llist_head issue_list
; /* list for command issue */
600 struct llist_node
*dispatch_list
; /* list for command dispatch */
603 struct f2fs_sm_info
{
604 struct sit_info
*sit_info
; /* whole segment information */
605 struct free_segmap_info
*free_info
; /* free segment information */
606 struct dirty_seglist_info
*dirty_info
; /* dirty segment information */
607 struct curseg_info
*curseg_array
; /* active segment information */
609 block_t seg0_blkaddr
; /* block address of 0'th segment */
610 block_t main_blkaddr
; /* start block address of main area */
611 block_t ssa_blkaddr
; /* start block address of SSA area */
613 unsigned int segment_count
; /* total # of segments */
614 unsigned int main_segments
; /* # of segments in main area */
615 unsigned int reserved_segments
; /* # of reserved segments */
616 unsigned int ovp_segments
; /* # of overprovision segments */
618 /* a threshold to reclaim prefree segments */
619 unsigned int rec_prefree_segments
;
621 /* for small discard management */
622 struct list_head discard_list
; /* 4KB discard list */
623 int nr_discards
; /* # of discards in the list */
624 int max_discards
; /* max. discards to be issued */
626 /* for batched trimming */
627 unsigned int trim_sections
; /* # of sections to trim */
629 struct list_head sit_entry_set
; /* sit entry set list */
631 unsigned int ipu_policy
; /* in-place-update policy */
632 unsigned int min_ipu_util
; /* in-place-update threshold */
633 unsigned int min_fsync_blocks
; /* threshold for fsync */
635 /* for flush command control */
636 struct flush_cmd_control
*cmd_control_info
;
644 * COUNT_TYPE for monitoring
646 * f2fs monitors the number of several block types such as on-writeback,
647 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
660 * The below are the page types of bios used in submit_bio().
661 * The available types are:
662 * DATA User data pages. It operates as async mode.
663 * NODE Node pages. It operates as async mode.
664 * META FS metadata pages such as SIT, NAT, CP.
665 * NR_PAGE_TYPE The number of page types.
666 * META_FLUSH Make sure the previous pages are written
667 * with waiting the bio's completion
668 * ... Only can be used with META.
670 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
677 INMEM
, /* the below types are used by tracepoints only. */
683 struct f2fs_io_info
{
684 struct f2fs_sb_info
*sbi
; /* f2fs_sb_info pointer */
685 enum page_type type
; /* contains DATA/NODE/META/META_FLUSH */
686 int rw
; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
687 block_t blk_addr
; /* block address to be written */
688 struct page
*page
; /* page to be written */
689 struct page
*encrypted_page
; /* encrypted page */
692 #define is_read_io(rw) (((rw) & 1) == READ)
693 struct f2fs_bio_info
{
694 struct f2fs_sb_info
*sbi
; /* f2fs superblock */
695 struct bio
*bio
; /* bios to merge */
696 sector_t last_block_in_bio
; /* last block number */
697 struct f2fs_io_info fio
; /* store buffered io info. */
698 struct rw_semaphore io_rwsem
; /* blocking op for bio */
702 DIR_INODE
, /* for dirty dir inode */
703 FILE_INODE
, /* for dirty regular/symlink inode */
707 /* for inner inode cache management */
708 struct inode_management
{
709 struct radix_tree_root ino_root
; /* ino entry array */
710 spinlock_t ino_lock
; /* for ino entry lock */
711 struct list_head ino_list
; /* inode list head */
712 unsigned long ino_num
; /* number of entries */
715 /* For s_flag in struct f2fs_sb_info */
717 SBI_IS_DIRTY
, /* dirty flag for checkpoint */
718 SBI_IS_CLOSE
, /* specify unmounting */
719 SBI_NEED_FSCK
, /* need fsck.f2fs to fix */
720 SBI_POR_DOING
, /* recovery is doing or not */
723 struct f2fs_sb_info
{
724 struct super_block
*sb
; /* pointer to VFS super block */
725 struct proc_dir_entry
*s_proc
; /* proc entry */
726 struct f2fs_super_block
*raw_super
; /* raw super block pointer */
727 int valid_super_block
; /* valid super block no */
728 int s_flag
; /* flags for sbi */
730 /* for node-related operations */
731 struct f2fs_nm_info
*nm_info
; /* node manager */
732 struct inode
*node_inode
; /* cache node blocks */
734 /* for segment-related operations */
735 struct f2fs_sm_info
*sm_info
; /* segment manager */
737 /* for bio operations */
738 struct f2fs_bio_info read_io
; /* for read bios */
739 struct f2fs_bio_info write_io
[NR_PAGE_TYPE
]; /* for write bios */
742 struct f2fs_checkpoint
*ckpt
; /* raw checkpoint pointer */
743 struct inode
*meta_inode
; /* cache meta blocks */
744 struct mutex cp_mutex
; /* checkpoint procedure lock */
745 struct rw_semaphore cp_rwsem
; /* blocking FS operations */
746 struct rw_semaphore node_write
; /* locking node writes */
747 struct mutex writepages
; /* mutex for writepages() */
748 wait_queue_head_t cp_wait
;
749 long cp_expires
, cp_interval
; /* next expected periodic cp */
751 struct inode_management im
[MAX_INO_ENTRY
]; /* manage inode cache */
753 /* for orphan inode, use 0'th array */
754 unsigned int max_orphans
; /* max orphan inodes */
756 /* for inode management */
757 struct list_head inode_list
[NR_INODE_TYPE
]; /* dirty inode list */
758 spinlock_t inode_lock
[NR_INODE_TYPE
]; /* for dirty inode list lock */
760 /* for extent tree cache */
761 struct radix_tree_root extent_tree_root
;/* cache extent cache entries */
762 struct rw_semaphore extent_tree_lock
; /* locking extent radix tree */
763 struct list_head extent_list
; /* lru list for shrinker */
764 spinlock_t extent_lock
; /* locking extent lru list */
765 int total_ext_tree
; /* extent tree count */
766 atomic_t total_ext_node
; /* extent info count */
768 /* basic filesystem units */
769 unsigned int log_sectors_per_block
; /* log2 sectors per block */
770 unsigned int log_blocksize
; /* log2 block size */
771 unsigned int blocksize
; /* block size */
772 unsigned int root_ino_num
; /* root inode number*/
773 unsigned int node_ino_num
; /* node inode number*/
774 unsigned int meta_ino_num
; /* meta inode number*/
775 unsigned int log_blocks_per_seg
; /* log2 blocks per segment */
776 unsigned int blocks_per_seg
; /* blocks per segment */
777 unsigned int segs_per_sec
; /* segments per section */
778 unsigned int secs_per_zone
; /* sections per zone */
779 unsigned int total_sections
; /* total section count */
780 unsigned int total_node_count
; /* total node block count */
781 unsigned int total_valid_node_count
; /* valid node block count */
782 unsigned int total_valid_inode_count
; /* valid inode count */
783 int active_logs
; /* # of active logs */
784 int dir_level
; /* directory level */
786 block_t user_block_count
; /* # of user blocks */
787 block_t total_valid_block_count
; /* # of valid blocks */
788 block_t alloc_valid_block_count
; /* # of allocated blocks */
789 block_t discard_blks
; /* discard command candidats */
790 block_t last_valid_block_count
; /* for recovery */
791 u32 s_next_generation
; /* for NFS support */
792 atomic_t nr_pages
[NR_COUNT_TYPE
]; /* # of pages, see count_type */
794 struct f2fs_mount_info mount_opt
; /* mount options */
796 /* for cleaning operations */
797 struct mutex gc_mutex
; /* mutex for GC */
798 struct f2fs_gc_kthread
*gc_thread
; /* GC thread */
799 unsigned int cur_victim_sec
; /* current victim section num */
801 /* maximum # of trials to find a victim segment for SSR and GC */
802 unsigned int max_victim_search
;
805 * for stat information.
806 * one is for the LFS mode, and the other is for the SSR mode.
808 #ifdef CONFIG_F2FS_STAT_FS
809 struct f2fs_stat_info
*stat_info
; /* FS status information */
810 unsigned int segment_count
[2]; /* # of allocated segments */
811 unsigned int block_count
[2]; /* # of allocated blocks */
812 atomic_t inplace_count
; /* # of inplace update */
813 atomic64_t total_hit_ext
; /* # of lookup extent cache */
814 atomic64_t read_hit_rbtree
; /* # of hit rbtree extent node */
815 atomic64_t read_hit_largest
; /* # of hit largest extent node */
816 atomic64_t read_hit_cached
; /* # of hit cached extent node */
817 atomic_t inline_xattr
; /* # of inline_xattr inodes */
818 atomic_t inline_inode
; /* # of inline_data inodes */
819 atomic_t inline_dir
; /* # of inline_dentry inodes */
820 int bg_gc
; /* background gc calls */
821 unsigned int n_dirty_dirs
; /* # of dir inodes */
823 unsigned int last_victim
[2]; /* last victim segment # */
824 spinlock_t stat_lock
; /* lock for stat operations */
826 /* For sysfs suppport */
827 struct kobject s_kobj
;
828 struct completion s_kobj_unregister
;
830 /* For shrinker support */
831 struct list_head s_list
;
832 struct mutex umount_mutex
;
833 unsigned int shrinker_run_no
;
839 static inline struct f2fs_inode_info
*F2FS_I(struct inode
*inode
)
841 return container_of(inode
, struct f2fs_inode_info
, vfs_inode
);
844 static inline struct f2fs_sb_info
*F2FS_SB(struct super_block
*sb
)
846 return sb
->s_fs_info
;
849 static inline struct f2fs_sb_info
*F2FS_I_SB(struct inode
*inode
)
851 return F2FS_SB(inode
->i_sb
);
854 static inline struct f2fs_sb_info
*F2FS_M_SB(struct address_space
*mapping
)
856 return F2FS_I_SB(mapping
->host
);
859 static inline struct f2fs_sb_info
*F2FS_P_SB(struct page
*page
)
861 return F2FS_M_SB(page
->mapping
);
864 static inline struct f2fs_super_block
*F2FS_RAW_SUPER(struct f2fs_sb_info
*sbi
)
866 return (struct f2fs_super_block
*)(sbi
->raw_super
);
869 static inline struct f2fs_checkpoint
*F2FS_CKPT(struct f2fs_sb_info
*sbi
)
871 return (struct f2fs_checkpoint
*)(sbi
->ckpt
);
874 static inline struct f2fs_node
*F2FS_NODE(struct page
*page
)
876 return (struct f2fs_node
*)page_address(page
);
879 static inline struct f2fs_inode
*F2FS_INODE(struct page
*page
)
881 return &((struct f2fs_node
*)page_address(page
))->i
;
884 static inline struct f2fs_nm_info
*NM_I(struct f2fs_sb_info
*sbi
)
886 return (struct f2fs_nm_info
*)(sbi
->nm_info
);
889 static inline struct f2fs_sm_info
*SM_I(struct f2fs_sb_info
*sbi
)
891 return (struct f2fs_sm_info
*)(sbi
->sm_info
);
894 static inline struct sit_info
*SIT_I(struct f2fs_sb_info
*sbi
)
896 return (struct sit_info
*)(SM_I(sbi
)->sit_info
);
899 static inline struct free_segmap_info
*FREE_I(struct f2fs_sb_info
*sbi
)
901 return (struct free_segmap_info
*)(SM_I(sbi
)->free_info
);
904 static inline struct dirty_seglist_info
*DIRTY_I(struct f2fs_sb_info
*sbi
)
906 return (struct dirty_seglist_info
*)(SM_I(sbi
)->dirty_info
);
909 static inline struct address_space
*META_MAPPING(struct f2fs_sb_info
*sbi
)
911 return sbi
->meta_inode
->i_mapping
;
914 static inline struct address_space
*NODE_MAPPING(struct f2fs_sb_info
*sbi
)
916 return sbi
->node_inode
->i_mapping
;
919 static inline bool is_sbi_flag_set(struct f2fs_sb_info
*sbi
, unsigned int type
)
921 return sbi
->s_flag
& (0x01 << type
);
924 static inline void set_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
926 sbi
->s_flag
|= (0x01 << type
);
929 static inline void clear_sbi_flag(struct f2fs_sb_info
*sbi
, unsigned int type
)
931 sbi
->s_flag
&= ~(0x01 << type
);
934 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint
*cp
)
936 return le64_to_cpu(cp
->checkpoint_ver
);
939 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
941 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
942 return ckpt_flags
& f
;
945 static inline void set_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
947 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
949 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
952 static inline void clear_ckpt_flags(struct f2fs_checkpoint
*cp
, unsigned int f
)
954 unsigned int ckpt_flags
= le32_to_cpu(cp
->ckpt_flags
);
956 cp
->ckpt_flags
= cpu_to_le32(ckpt_flags
);
959 static inline void f2fs_lock_op(struct f2fs_sb_info
*sbi
)
961 down_read(&sbi
->cp_rwsem
);
964 static inline void f2fs_unlock_op(struct f2fs_sb_info
*sbi
)
966 up_read(&sbi
->cp_rwsem
);
969 static inline void f2fs_lock_all(struct f2fs_sb_info
*sbi
)
971 f2fs_down_write(&sbi
->cp_rwsem
, &sbi
->cp_mutex
);
974 static inline void f2fs_unlock_all(struct f2fs_sb_info
*sbi
)
976 up_write(&sbi
->cp_rwsem
);
979 static inline int __get_cp_reason(struct f2fs_sb_info
*sbi
)
981 int reason
= CP_SYNC
;
983 if (test_opt(sbi
, FASTBOOT
))
984 reason
= CP_FASTBOOT
;
985 if (is_sbi_flag_set(sbi
, SBI_IS_CLOSE
))
990 static inline bool __remain_node_summaries(int reason
)
992 return (reason
== CP_UMOUNT
|| reason
== CP_FASTBOOT
);
995 static inline bool __exist_node_summaries(struct f2fs_sb_info
*sbi
)
997 return (is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_UMOUNT_FLAG
) ||
998 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FASTBOOT_FLAG
));
1002 * Check whether the given nid is within node id range.
1004 static inline int check_nid_range(struct f2fs_sb_info
*sbi
, nid_t nid
)
1006 if (unlikely(nid
< F2FS_ROOT_INO(sbi
)))
1008 if (unlikely(nid
>= NM_I(sbi
)->max_nid
))
1013 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1016 * Check whether the inode has blocks or not
1018 static inline int F2FS_HAS_BLOCKS(struct inode
*inode
)
1020 if (F2FS_I(inode
)->i_xattr_nid
)
1021 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
+ 1;
1023 return inode
->i_blocks
> F2FS_DEFAULT_ALLOCATED_BLOCKS
;
1026 static inline bool f2fs_has_xattr_block(unsigned int ofs
)
1028 return ofs
== XATTR_NODE_OFFSET
;
1031 static inline bool inc_valid_block_count(struct f2fs_sb_info
*sbi
,
1032 struct inode
*inode
, blkcnt_t count
)
1034 block_t valid_block_count
;
1036 spin_lock(&sbi
->stat_lock
);
1038 sbi
->total_valid_block_count
+ (block_t
)count
;
1039 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1040 spin_unlock(&sbi
->stat_lock
);
1043 inode
->i_blocks
+= count
;
1044 sbi
->total_valid_block_count
= valid_block_count
;
1045 sbi
->alloc_valid_block_count
+= (block_t
)count
;
1046 spin_unlock(&sbi
->stat_lock
);
1050 static inline void dec_valid_block_count(struct f2fs_sb_info
*sbi
,
1051 struct inode
*inode
,
1054 spin_lock(&sbi
->stat_lock
);
1055 f2fs_bug_on(sbi
, sbi
->total_valid_block_count
< (block_t
) count
);
1056 f2fs_bug_on(sbi
, inode
->i_blocks
< count
);
1057 inode
->i_blocks
-= count
;
1058 sbi
->total_valid_block_count
-= (block_t
)count
;
1059 spin_unlock(&sbi
->stat_lock
);
1062 static inline void inc_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1064 atomic_inc(&sbi
->nr_pages
[count_type
]);
1065 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1068 static inline void inode_inc_dirty_pages(struct inode
*inode
)
1070 atomic_inc(&F2FS_I(inode
)->dirty_pages
);
1071 inc_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1072 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1075 static inline void dec_page_count(struct f2fs_sb_info
*sbi
, int count_type
)
1077 atomic_dec(&sbi
->nr_pages
[count_type
]);
1080 static inline void inode_dec_dirty_pages(struct inode
*inode
)
1082 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
1083 !S_ISLNK(inode
->i_mode
))
1086 atomic_dec(&F2FS_I(inode
)->dirty_pages
);
1087 dec_page_count(F2FS_I_SB(inode
), S_ISDIR(inode
->i_mode
) ?
1088 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
);
1091 static inline int get_pages(struct f2fs_sb_info
*sbi
, int count_type
)
1093 return atomic_read(&sbi
->nr_pages
[count_type
]);
1096 static inline int get_dirty_pages(struct inode
*inode
)
1098 return atomic_read(&F2FS_I(inode
)->dirty_pages
);
1101 static inline int get_blocktype_secs(struct f2fs_sb_info
*sbi
, int block_type
)
1103 unsigned int pages_per_sec
= sbi
->segs_per_sec
* sbi
->blocks_per_seg
;
1104 return ((get_pages(sbi
, block_type
) + pages_per_sec
- 1)
1105 >> sbi
->log_blocks_per_seg
) / sbi
->segs_per_sec
;
1108 static inline block_t
valid_user_blocks(struct f2fs_sb_info
*sbi
)
1110 return sbi
->total_valid_block_count
;
1113 static inline unsigned long __bitmap_size(struct f2fs_sb_info
*sbi
, int flag
)
1115 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1117 /* return NAT or SIT bitmap */
1118 if (flag
== NAT_BITMAP
)
1119 return le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
1120 else if (flag
== SIT_BITMAP
)
1121 return le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
1126 static inline block_t
__cp_payload(struct f2fs_sb_info
*sbi
)
1128 return le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_payload
);
1131 static inline void *__bitmap_ptr(struct f2fs_sb_info
*sbi
, int flag
)
1133 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1136 if (__cp_payload(sbi
) > 0) {
1137 if (flag
== NAT_BITMAP
)
1138 return &ckpt
->sit_nat_version_bitmap
;
1140 return (unsigned char *)ckpt
+ F2FS_BLKSIZE
;
1142 offset
= (flag
== NAT_BITMAP
) ?
1143 le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
) : 0;
1144 return &ckpt
->sit_nat_version_bitmap
+ offset
;
1148 static inline block_t
__start_cp_addr(struct f2fs_sb_info
*sbi
)
1151 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1152 unsigned long long ckpt_version
= cur_cp_version(ckpt
);
1154 start_addr
= le32_to_cpu(F2FS_RAW_SUPER(sbi
)->cp_blkaddr
);
1157 * odd numbered checkpoint should at cp segment 0
1158 * and even segment must be at cp segment 1
1160 if (!(ckpt_version
& 1))
1161 start_addr
+= sbi
->blocks_per_seg
;
1166 static inline block_t
__start_sum_addr(struct f2fs_sb_info
*sbi
)
1168 return le32_to_cpu(F2FS_CKPT(sbi
)->cp_pack_start_sum
);
1171 static inline bool inc_valid_node_count(struct f2fs_sb_info
*sbi
,
1172 struct inode
*inode
)
1174 block_t valid_block_count
;
1175 unsigned int valid_node_count
;
1177 spin_lock(&sbi
->stat_lock
);
1179 valid_block_count
= sbi
->total_valid_block_count
+ 1;
1180 if (unlikely(valid_block_count
> sbi
->user_block_count
)) {
1181 spin_unlock(&sbi
->stat_lock
);
1185 valid_node_count
= sbi
->total_valid_node_count
+ 1;
1186 if (unlikely(valid_node_count
> sbi
->total_node_count
)) {
1187 spin_unlock(&sbi
->stat_lock
);
1194 sbi
->alloc_valid_block_count
++;
1195 sbi
->total_valid_node_count
++;
1196 sbi
->total_valid_block_count
++;
1197 spin_unlock(&sbi
->stat_lock
);
1202 static inline void dec_valid_node_count(struct f2fs_sb_info
*sbi
,
1203 struct inode
*inode
)
1205 spin_lock(&sbi
->stat_lock
);
1207 f2fs_bug_on(sbi
, !sbi
->total_valid_block_count
);
1208 f2fs_bug_on(sbi
, !sbi
->total_valid_node_count
);
1209 f2fs_bug_on(sbi
, !inode
->i_blocks
);
1212 sbi
->total_valid_node_count
--;
1213 sbi
->total_valid_block_count
--;
1215 spin_unlock(&sbi
->stat_lock
);
1218 static inline unsigned int valid_node_count(struct f2fs_sb_info
*sbi
)
1220 return sbi
->total_valid_node_count
;
1223 static inline void inc_valid_inode_count(struct f2fs_sb_info
*sbi
)
1225 spin_lock(&sbi
->stat_lock
);
1226 f2fs_bug_on(sbi
, sbi
->total_valid_inode_count
== sbi
->total_node_count
);
1227 sbi
->total_valid_inode_count
++;
1228 spin_unlock(&sbi
->stat_lock
);
1231 static inline void dec_valid_inode_count(struct f2fs_sb_info
*sbi
)
1233 spin_lock(&sbi
->stat_lock
);
1234 f2fs_bug_on(sbi
, !sbi
->total_valid_inode_count
);
1235 sbi
->total_valid_inode_count
--;
1236 spin_unlock(&sbi
->stat_lock
);
1239 static inline unsigned int valid_inode_count(struct f2fs_sb_info
*sbi
)
1241 return sbi
->total_valid_inode_count
;
1244 static inline struct page
*f2fs_grab_cache_page(struct address_space
*mapping
,
1245 pgoff_t index
, bool for_write
)
1248 return grab_cache_page(mapping
, index
);
1249 return grab_cache_page_write_begin(mapping
, index
, AOP_FLAG_NOFS
);
1252 static inline void f2fs_copy_page(struct page
*src
, struct page
*dst
)
1254 char *src_kaddr
= kmap(src
);
1255 char *dst_kaddr
= kmap(dst
);
1257 memcpy(dst_kaddr
, src_kaddr
, PAGE_SIZE
);
1262 static inline void f2fs_put_page(struct page
*page
, int unlock
)
1268 f2fs_bug_on(F2FS_P_SB(page
), !PageLocked(page
));
1271 page_cache_release(page
);
1274 static inline void f2fs_put_dnode(struct dnode_of_data
*dn
)
1277 f2fs_put_page(dn
->node_page
, 1);
1278 if (dn
->inode_page
&& dn
->node_page
!= dn
->inode_page
)
1279 f2fs_put_page(dn
->inode_page
, 0);
1280 dn
->node_page
= NULL
;
1281 dn
->inode_page
= NULL
;
1284 static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name
,
1287 return kmem_cache_create(name
, size
, 0, SLAB_RECLAIM_ACCOUNT
, NULL
);
1290 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache
*cachep
,
1295 entry
= kmem_cache_alloc(cachep
, flags
);
1297 entry
= kmem_cache_alloc(cachep
, flags
| __GFP_NOFAIL
);
1301 static inline struct bio
*f2fs_bio_alloc(int npages
)
1305 /* No failure on bio allocation */
1306 bio
= bio_alloc(GFP_NOIO
, npages
);
1308 bio
= bio_alloc(GFP_NOIO
| __GFP_NOFAIL
, npages
);
1312 static inline void f2fs_radix_tree_insert(struct radix_tree_root
*root
,
1313 unsigned long index
, void *item
)
1315 while (radix_tree_insert(root
, index
, item
))
1319 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1321 static inline bool IS_INODE(struct page
*page
)
1323 struct f2fs_node
*p
= F2FS_NODE(page
);
1324 return RAW_IS_INODE(p
);
1327 static inline __le32
*blkaddr_in_node(struct f2fs_node
*node
)
1329 return RAW_IS_INODE(node
) ? node
->i
.i_addr
: node
->dn
.addr
;
1332 static inline block_t
datablock_addr(struct page
*node_page
,
1333 unsigned int offset
)
1335 struct f2fs_node
*raw_node
;
1337 raw_node
= F2FS_NODE(node_page
);
1338 addr_array
= blkaddr_in_node(raw_node
);
1339 return le32_to_cpu(addr_array
[offset
]);
1342 static inline int f2fs_test_bit(unsigned int nr
, char *addr
)
1347 mask
= 1 << (7 - (nr
& 0x07));
1348 return mask
& *addr
;
1351 static inline void f2fs_set_bit(unsigned int nr
, char *addr
)
1356 mask
= 1 << (7 - (nr
& 0x07));
1360 static inline void f2fs_clear_bit(unsigned int nr
, char *addr
)
1365 mask
= 1 << (7 - (nr
& 0x07));
1369 static inline int f2fs_test_and_set_bit(unsigned int nr
, char *addr
)
1375 mask
= 1 << (7 - (nr
& 0x07));
1381 static inline int f2fs_test_and_clear_bit(unsigned int nr
, char *addr
)
1387 mask
= 1 << (7 - (nr
& 0x07));
1393 static inline void f2fs_change_bit(unsigned int nr
, char *addr
)
1398 mask
= 1 << (7 - (nr
& 0x07));
1402 /* used for f2fs_inode_info->flags */
1404 FI_NEW_INODE
, /* indicate newly allocated inode */
1405 FI_DIRTY_INODE
, /* indicate inode is dirty or not */
1406 FI_DIRTY_DIR
, /* indicate directory has dirty pages */
1407 FI_INC_LINK
, /* need to increment i_nlink */
1408 FI_ACL_MODE
, /* indicate acl mode */
1409 FI_NO_ALLOC
, /* should not allocate any blocks */
1410 FI_FREE_NID
, /* free allocated nide */
1411 FI_UPDATE_DIR
, /* should update inode block for consistency */
1412 FI_DELAY_IPUT
, /* used for the recovery */
1413 FI_NO_EXTENT
, /* not to use the extent cache */
1414 FI_INLINE_XATTR
, /* used for inline xattr */
1415 FI_INLINE_DATA
, /* used for inline data*/
1416 FI_INLINE_DENTRY
, /* used for inline dentry */
1417 FI_APPEND_WRITE
, /* inode has appended data */
1418 FI_UPDATE_WRITE
, /* inode has in-place-update data */
1419 FI_NEED_IPU
, /* used for ipu per file */
1420 FI_ATOMIC_FILE
, /* indicate atomic file */
1421 FI_VOLATILE_FILE
, /* indicate volatile file */
1422 FI_FIRST_BLOCK_WRITTEN
, /* indicate #0 data block was written */
1423 FI_DROP_CACHE
, /* drop dirty page cache */
1424 FI_DATA_EXIST
, /* indicate data exists */
1425 FI_INLINE_DOTS
, /* indicate inline dot dentries */
1426 FI_DO_DEFRAG
, /* indicate defragment is running */
1427 FI_DIRTY_FILE
, /* indicate regular/symlink has dirty pages */
1430 static inline void set_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1432 if (!test_bit(flag
, &fi
->flags
))
1433 set_bit(flag
, &fi
->flags
);
1436 static inline int is_inode_flag_set(struct f2fs_inode_info
*fi
, int flag
)
1438 return test_bit(flag
, &fi
->flags
);
1441 static inline void clear_inode_flag(struct f2fs_inode_info
*fi
, int flag
)
1443 if (test_bit(flag
, &fi
->flags
))
1444 clear_bit(flag
, &fi
->flags
);
1447 static inline void set_acl_inode(struct f2fs_inode_info
*fi
, umode_t mode
)
1449 fi
->i_acl_mode
= mode
;
1450 set_inode_flag(fi
, FI_ACL_MODE
);
1453 static inline void get_inline_info(struct f2fs_inode_info
*fi
,
1454 struct f2fs_inode
*ri
)
1456 if (ri
->i_inline
& F2FS_INLINE_XATTR
)
1457 set_inode_flag(fi
, FI_INLINE_XATTR
);
1458 if (ri
->i_inline
& F2FS_INLINE_DATA
)
1459 set_inode_flag(fi
, FI_INLINE_DATA
);
1460 if (ri
->i_inline
& F2FS_INLINE_DENTRY
)
1461 set_inode_flag(fi
, FI_INLINE_DENTRY
);
1462 if (ri
->i_inline
& F2FS_DATA_EXIST
)
1463 set_inode_flag(fi
, FI_DATA_EXIST
);
1464 if (ri
->i_inline
& F2FS_INLINE_DOTS
)
1465 set_inode_flag(fi
, FI_INLINE_DOTS
);
1468 static inline void set_raw_inline(struct f2fs_inode_info
*fi
,
1469 struct f2fs_inode
*ri
)
1473 if (is_inode_flag_set(fi
, FI_INLINE_XATTR
))
1474 ri
->i_inline
|= F2FS_INLINE_XATTR
;
1475 if (is_inode_flag_set(fi
, FI_INLINE_DATA
))
1476 ri
->i_inline
|= F2FS_INLINE_DATA
;
1477 if (is_inode_flag_set(fi
, FI_INLINE_DENTRY
))
1478 ri
->i_inline
|= F2FS_INLINE_DENTRY
;
1479 if (is_inode_flag_set(fi
, FI_DATA_EXIST
))
1480 ri
->i_inline
|= F2FS_DATA_EXIST
;
1481 if (is_inode_flag_set(fi
, FI_INLINE_DOTS
))
1482 ri
->i_inline
|= F2FS_INLINE_DOTS
;
1485 static inline int f2fs_has_inline_xattr(struct inode
*inode
)
1487 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_XATTR
);
1490 static inline unsigned int addrs_per_inode(struct f2fs_inode_info
*fi
)
1492 if (f2fs_has_inline_xattr(&fi
->vfs_inode
))
1493 return DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
;
1494 return DEF_ADDRS_PER_INODE
;
1497 static inline void *inline_xattr_addr(struct page
*page
)
1499 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1500 return (void *)&(ri
->i_addr
[DEF_ADDRS_PER_INODE
-
1501 F2FS_INLINE_XATTR_ADDRS
]);
1504 static inline int inline_xattr_size(struct inode
*inode
)
1506 if (f2fs_has_inline_xattr(inode
))
1507 return F2FS_INLINE_XATTR_ADDRS
<< 2;
1512 static inline int f2fs_has_inline_data(struct inode
*inode
)
1514 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DATA
);
1517 static inline void f2fs_clear_inline_inode(struct inode
*inode
)
1519 clear_inode_flag(F2FS_I(inode
), FI_INLINE_DATA
);
1520 clear_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1523 static inline int f2fs_exist_data(struct inode
*inode
)
1525 return is_inode_flag_set(F2FS_I(inode
), FI_DATA_EXIST
);
1528 static inline int f2fs_has_inline_dots(struct inode
*inode
)
1530 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DOTS
);
1533 static inline bool f2fs_is_atomic_file(struct inode
*inode
)
1535 return is_inode_flag_set(F2FS_I(inode
), FI_ATOMIC_FILE
);
1538 static inline bool f2fs_is_volatile_file(struct inode
*inode
)
1540 return is_inode_flag_set(F2FS_I(inode
), FI_VOLATILE_FILE
);
1543 static inline bool f2fs_is_first_block_written(struct inode
*inode
)
1545 return is_inode_flag_set(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1548 static inline bool f2fs_is_drop_cache(struct inode
*inode
)
1550 return is_inode_flag_set(F2FS_I(inode
), FI_DROP_CACHE
);
1553 static inline void *inline_data_addr(struct page
*page
)
1555 struct f2fs_inode
*ri
= F2FS_INODE(page
);
1556 return (void *)&(ri
->i_addr
[1]);
1559 static inline int f2fs_has_inline_dentry(struct inode
*inode
)
1561 return is_inode_flag_set(F2FS_I(inode
), FI_INLINE_DENTRY
);
1564 static inline void f2fs_dentry_kunmap(struct inode
*dir
, struct page
*page
)
1566 if (!f2fs_has_inline_dentry(dir
))
1570 static inline int is_file(struct inode
*inode
, int type
)
1572 return F2FS_I(inode
)->i_advise
& type
;
1575 static inline void set_file(struct inode
*inode
, int type
)
1577 F2FS_I(inode
)->i_advise
|= type
;
1580 static inline void clear_file(struct inode
*inode
, int type
)
1582 F2FS_I(inode
)->i_advise
&= ~type
;
1585 static inline int f2fs_readonly(struct super_block
*sb
)
1587 return sb
->s_flags
& MS_RDONLY
;
1590 static inline bool f2fs_cp_error(struct f2fs_sb_info
*sbi
)
1592 return is_set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1595 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
)
1597 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
1598 sbi
->sb
->s_flags
|= MS_RDONLY
;
1601 static inline bool is_dot_dotdot(const struct qstr
*str
)
1603 if (str
->len
== 1 && str
->name
[0] == '.')
1606 if (str
->len
== 2 && str
->name
[0] == '.' && str
->name
[1] == '.')
1612 static inline bool f2fs_may_extent_tree(struct inode
*inode
)
1614 mode_t mode
= inode
->i_mode
;
1616 if (!test_opt(F2FS_I_SB(inode
), EXTENT_CACHE
) ||
1617 is_inode_flag_set(F2FS_I(inode
), FI_NO_EXTENT
))
1620 return S_ISREG(mode
);
1623 static inline void *f2fs_kvmalloc(size_t size
, gfp_t flags
)
1627 ret
= kmalloc(size
, flags
| __GFP_NOWARN
);
1629 ret
= __vmalloc(size
, flags
, PAGE_KERNEL
);
1633 static inline void *f2fs_kvzalloc(size_t size
, gfp_t flags
)
1637 ret
= kzalloc(size
, flags
| __GFP_NOWARN
);
1639 ret
= __vmalloc(size
, flags
| __GFP_ZERO
, PAGE_KERNEL
);
1643 #define get_inode_mode(i) \
1644 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1645 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1647 /* get offset of first page in next direct node */
1648 #define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1649 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1650 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1651 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1656 int f2fs_sync_file(struct file
*, loff_t
, loff_t
, int);
1657 void truncate_data_blocks(struct dnode_of_data
*);
1658 int truncate_blocks(struct inode
*, u64
, bool);
1659 int f2fs_truncate(struct inode
*, bool);
1660 int f2fs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
1661 int f2fs_setattr(struct dentry
*, struct iattr
*);
1662 int truncate_hole(struct inode
*, pgoff_t
, pgoff_t
);
1663 int truncate_data_blocks_range(struct dnode_of_data
*, int);
1664 long f2fs_ioctl(struct file
*, unsigned int, unsigned long);
1665 long f2fs_compat_ioctl(struct file
*, unsigned int, unsigned long);
1670 void f2fs_set_inode_flags(struct inode
*);
1671 struct inode
*f2fs_iget(struct super_block
*, unsigned long);
1672 int try_to_free_nats(struct f2fs_sb_info
*, int);
1673 void update_inode(struct inode
*, struct page
*);
1674 void update_inode_page(struct inode
*);
1675 int f2fs_write_inode(struct inode
*, struct writeback_control
*);
1676 void f2fs_evict_inode(struct inode
*);
1677 void handle_failed_inode(struct inode
*);
1682 struct dentry
*f2fs_get_parent(struct dentry
*child
);
1687 extern unsigned char f2fs_filetype_table
[F2FS_FT_MAX
];
1688 void set_de_type(struct f2fs_dir_entry
*, umode_t
);
1690 struct f2fs_dir_entry
*find_target_dentry(struct f2fs_filename
*,
1691 f2fs_hash_t
, int *, struct f2fs_dentry_ptr
*);
1692 bool f2fs_fill_dentries(struct dir_context
*, struct f2fs_dentry_ptr
*,
1693 unsigned int, struct f2fs_str
*);
1694 void do_make_empty_dir(struct inode
*, struct inode
*,
1695 struct f2fs_dentry_ptr
*);
1696 struct page
*init_inode_metadata(struct inode
*, struct inode
*,
1697 const struct qstr
*, struct page
*);
1698 void update_parent_metadata(struct inode
*, struct inode
*, unsigned int);
1699 int room_for_filename(const void *, int, int);
1700 void f2fs_drop_nlink(struct inode
*, struct inode
*, struct page
*);
1701 struct f2fs_dir_entry
*f2fs_find_entry(struct inode
*, struct qstr
*,
1703 struct f2fs_dir_entry
*f2fs_parent_dir(struct inode
*, struct page
**);
1704 ino_t
f2fs_inode_by_name(struct inode
*, struct qstr
*);
1705 void f2fs_set_link(struct inode
*, struct f2fs_dir_entry
*,
1706 struct page
*, struct inode
*);
1707 int update_dent_inode(struct inode
*, struct inode
*, const struct qstr
*);
1708 void f2fs_update_dentry(nid_t ino
, umode_t mode
, struct f2fs_dentry_ptr
*,
1709 const struct qstr
*, f2fs_hash_t
, unsigned int);
1710 int __f2fs_add_link(struct inode
*, const struct qstr
*, struct inode
*, nid_t
,
1712 void f2fs_delete_entry(struct f2fs_dir_entry
*, struct page
*, struct inode
*,
1714 int f2fs_do_tmpfile(struct inode
*, struct inode
*);
1715 bool f2fs_empty_dir(struct inode
*);
1717 static inline int f2fs_add_link(struct dentry
*dentry
, struct inode
*inode
)
1719 return __f2fs_add_link(d_inode(dentry
->d_parent
), &dentry
->d_name
,
1720 inode
, inode
->i_ino
, inode
->i_mode
);
1726 int f2fs_commit_super(struct f2fs_sb_info
*, bool);
1727 int f2fs_sync_fs(struct super_block
*, int);
1728 extern __printf(3, 4)
1729 void f2fs_msg(struct super_block
*, const char *, const char *, ...);
1734 f2fs_hash_t
f2fs_dentry_hash(const struct qstr
*);
1739 struct dnode_of_data
;
1742 bool available_free_memory(struct f2fs_sb_info
*, int);
1743 int need_dentry_mark(struct f2fs_sb_info
*, nid_t
);
1744 bool is_checkpointed_node(struct f2fs_sb_info
*, nid_t
);
1745 bool need_inode_block_update(struct f2fs_sb_info
*, nid_t
);
1746 void get_node_info(struct f2fs_sb_info
*, nid_t
, struct node_info
*);
1747 int get_dnode_of_data(struct dnode_of_data
*, pgoff_t
, int);
1748 int truncate_inode_blocks(struct inode
*, pgoff_t
);
1749 int truncate_xattr_node(struct inode
*, struct page
*);
1750 int wait_on_node_pages_writeback(struct f2fs_sb_info
*, nid_t
);
1751 int remove_inode_page(struct inode
*);
1752 struct page
*new_inode_page(struct inode
*);
1753 struct page
*new_node_page(struct dnode_of_data
*, unsigned int, struct page
*);
1754 void ra_node_page(struct f2fs_sb_info
*, nid_t
);
1755 struct page
*get_node_page(struct f2fs_sb_info
*, pgoff_t
);
1756 struct page
*get_node_page_ra(struct page
*, int);
1757 void sync_inode_page(struct dnode_of_data
*);
1758 int sync_node_pages(struct f2fs_sb_info
*, nid_t
, struct writeback_control
*);
1759 bool alloc_nid(struct f2fs_sb_info
*, nid_t
*);
1760 void alloc_nid_done(struct f2fs_sb_info
*, nid_t
);
1761 void alloc_nid_failed(struct f2fs_sb_info
*, nid_t
);
1762 int try_to_free_nids(struct f2fs_sb_info
*, int);
1763 void recover_inline_xattr(struct inode
*, struct page
*);
1764 void recover_xattr_data(struct inode
*, struct page
*, block_t
);
1765 int recover_inode_page(struct f2fs_sb_info
*, struct page
*);
1766 int restore_node_summary(struct f2fs_sb_info
*, unsigned int,
1767 struct f2fs_summary_block
*);
1768 void flush_nat_entries(struct f2fs_sb_info
*);
1769 int build_node_manager(struct f2fs_sb_info
*);
1770 void destroy_node_manager(struct f2fs_sb_info
*);
1771 int __init
create_node_manager_caches(void);
1772 void destroy_node_manager_caches(void);
1777 void register_inmem_page(struct inode
*, struct page
*);
1778 int commit_inmem_pages(struct inode
*, bool);
1779 void f2fs_balance_fs(struct f2fs_sb_info
*);
1780 void f2fs_balance_fs_bg(struct f2fs_sb_info
*);
1781 int f2fs_issue_flush(struct f2fs_sb_info
*);
1782 int create_flush_cmd_control(struct f2fs_sb_info
*);
1783 void destroy_flush_cmd_control(struct f2fs_sb_info
*);
1784 void invalidate_blocks(struct f2fs_sb_info
*, block_t
);
1785 bool is_checkpointed_data(struct f2fs_sb_info
*, block_t
);
1786 void refresh_sit_entry(struct f2fs_sb_info
*, block_t
, block_t
);
1787 void clear_prefree_segments(struct f2fs_sb_info
*, struct cp_control
*);
1788 void release_discard_addrs(struct f2fs_sb_info
*);
1789 bool discard_next_dnode(struct f2fs_sb_info
*, block_t
);
1790 int npages_for_summary_flush(struct f2fs_sb_info
*, bool);
1791 void allocate_new_segments(struct f2fs_sb_info
*);
1792 int f2fs_trim_fs(struct f2fs_sb_info
*, struct fstrim_range
*);
1793 struct page
*get_sum_page(struct f2fs_sb_info
*, unsigned int);
1794 void update_meta_page(struct f2fs_sb_info
*, void *, block_t
);
1795 void write_meta_page(struct f2fs_sb_info
*, struct page
*);
1796 void write_node_page(unsigned int, struct f2fs_io_info
*);
1797 void write_data_page(struct dnode_of_data
*, struct f2fs_io_info
*);
1798 void rewrite_data_page(struct f2fs_io_info
*);
1799 void f2fs_replace_block(struct f2fs_sb_info
*, struct dnode_of_data
*,
1800 block_t
, block_t
, unsigned char, bool);
1801 void allocate_data_block(struct f2fs_sb_info
*, struct page
*,
1802 block_t
, block_t
*, struct f2fs_summary
*, int);
1803 void f2fs_wait_on_page_writeback(struct page
*, enum page_type
);
1804 void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info
*, block_t
);
1805 void write_data_summaries(struct f2fs_sb_info
*, block_t
);
1806 void write_node_summaries(struct f2fs_sb_info
*, block_t
);
1807 int lookup_journal_in_cursum(struct f2fs_summary_block
*,
1808 int, unsigned int, int);
1809 void flush_sit_entries(struct f2fs_sb_info
*, struct cp_control
*);
1810 int build_segment_manager(struct f2fs_sb_info
*);
1811 void destroy_segment_manager(struct f2fs_sb_info
*);
1812 int __init
create_segment_manager_caches(void);
1813 void destroy_segment_manager_caches(void);
1818 struct page
*grab_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1819 struct page
*get_meta_page(struct f2fs_sb_info
*, pgoff_t
);
1820 struct page
*get_tmp_page(struct f2fs_sb_info
*, pgoff_t
);
1821 bool is_valid_blkaddr(struct f2fs_sb_info
*, block_t
, int);
1822 int ra_meta_pages(struct f2fs_sb_info
*, block_t
, int, int, bool);
1823 void ra_meta_pages_cond(struct f2fs_sb_info
*, pgoff_t
);
1824 long sync_meta_pages(struct f2fs_sb_info
*, enum page_type
, long);
1825 void add_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1826 void remove_ino_entry(struct f2fs_sb_info
*, nid_t
, int type
);
1827 void release_ino_entry(struct f2fs_sb_info
*);
1828 bool exist_written_data(struct f2fs_sb_info
*, nid_t
, int);
1829 int acquire_orphan_inode(struct f2fs_sb_info
*);
1830 void release_orphan_inode(struct f2fs_sb_info
*);
1831 void add_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1832 void remove_orphan_inode(struct f2fs_sb_info
*, nid_t
);
1833 int recover_orphan_inodes(struct f2fs_sb_info
*);
1834 int get_valid_checkpoint(struct f2fs_sb_info
*);
1835 void update_dirty_page(struct inode
*, struct page
*);
1836 void add_dirty_dir_inode(struct inode
*);
1837 void remove_dirty_inode(struct inode
*);
1838 void sync_dirty_inodes(struct f2fs_sb_info
*, enum inode_type
);
1839 void write_checkpoint(struct f2fs_sb_info
*, struct cp_control
*);
1840 void init_ino_entry_info(struct f2fs_sb_info
*);
1841 int __init
create_checkpoint_caches(void);
1842 void destroy_checkpoint_caches(void);
1847 void f2fs_submit_merged_bio(struct f2fs_sb_info
*, enum page_type
, int);
1848 int f2fs_submit_page_bio(struct f2fs_io_info
*);
1849 void f2fs_submit_page_mbio(struct f2fs_io_info
*);
1850 void set_data_blkaddr(struct dnode_of_data
*);
1851 int reserve_new_block(struct dnode_of_data
*);
1852 int f2fs_get_block(struct dnode_of_data
*, pgoff_t
);
1853 int f2fs_reserve_block(struct dnode_of_data
*, pgoff_t
);
1854 struct page
*get_read_data_page(struct inode
*, pgoff_t
, int, bool);
1855 struct page
*find_data_page(struct inode
*, pgoff_t
);
1856 struct page
*get_lock_data_page(struct inode
*, pgoff_t
, bool);
1857 struct page
*get_new_data_page(struct inode
*, struct page
*, pgoff_t
, bool);
1858 int do_write_data_page(struct f2fs_io_info
*);
1859 int f2fs_map_blocks(struct inode
*, struct f2fs_map_blocks
*, int, int);
1860 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*, u64
, u64
);
1861 void f2fs_invalidate_page(struct page
*, unsigned int, unsigned int);
1862 int f2fs_release_page(struct page
*, gfp_t
);
1867 int start_gc_thread(struct f2fs_sb_info
*);
1868 void stop_gc_thread(struct f2fs_sb_info
*);
1869 block_t
start_bidx_of_node(unsigned int, struct f2fs_inode_info
*);
1870 int f2fs_gc(struct f2fs_sb_info
*, bool);
1871 void build_gc_manager(struct f2fs_sb_info
*);
1876 int recover_fsync_data(struct f2fs_sb_info
*);
1877 bool space_for_roll_forward(struct f2fs_sb_info
*);
1882 #ifdef CONFIG_F2FS_STAT_FS
1883 struct f2fs_stat_info
{
1884 struct list_head stat_list
;
1885 struct f2fs_sb_info
*sbi
;
1886 int all_area_segs
, sit_area_segs
, nat_area_segs
, ssa_area_segs
;
1887 int main_area_segs
, main_area_sections
, main_area_zones
;
1888 unsigned long long hit_largest
, hit_cached
, hit_rbtree
;
1889 unsigned long long hit_total
, total_ext
;
1890 int ext_tree
, ext_node
;
1891 int ndirty_node
, ndirty_dent
, ndirty_dirs
, ndirty_meta
;
1892 int nats
, dirty_nats
, sits
, dirty_sits
, fnids
;
1893 int total_count
, utilization
;
1894 int bg_gc
, inmem_pages
, wb_pages
;
1895 int inline_xattr
, inline_inode
, inline_dir
;
1896 unsigned int valid_count
, valid_node_count
, valid_inode_count
;
1897 unsigned int bimodal
, avg_vblocks
;
1898 int util_free
, util_valid
, util_invalid
;
1899 int rsvd_segs
, overp_segs
;
1900 int dirty_count
, node_pages
, meta_pages
;
1901 int prefree_count
, call_count
, cp_count
;
1902 int tot_segs
, node_segs
, data_segs
, free_segs
, free_secs
;
1903 int bg_node_segs
, bg_data_segs
;
1904 int tot_blks
, data_blks
, node_blks
;
1905 int bg_data_blks
, bg_node_blks
;
1906 int curseg
[NR_CURSEG_TYPE
];
1907 int cursec
[NR_CURSEG_TYPE
];
1908 int curzone
[NR_CURSEG_TYPE
];
1910 unsigned int segment_count
[2];
1911 unsigned int block_count
[2];
1912 unsigned int inplace_count
;
1913 unsigned long long base_mem
, cache_mem
, page_mem
;
1916 static inline struct f2fs_stat_info
*F2FS_STAT(struct f2fs_sb_info
*sbi
)
1918 return (struct f2fs_stat_info
*)sbi
->stat_info
;
1921 #define stat_inc_cp_count(si) ((si)->cp_count++)
1922 #define stat_inc_call_count(si) ((si)->call_count++)
1923 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1924 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1925 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1926 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1927 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1928 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1929 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
1930 #define stat_inc_inline_xattr(inode) \
1932 if (f2fs_has_inline_xattr(inode)) \
1933 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1935 #define stat_dec_inline_xattr(inode) \
1937 if (f2fs_has_inline_xattr(inode)) \
1938 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1940 #define stat_inc_inline_inode(inode) \
1942 if (f2fs_has_inline_data(inode)) \
1943 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
1945 #define stat_dec_inline_inode(inode) \
1947 if (f2fs_has_inline_data(inode)) \
1948 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
1950 #define stat_inc_inline_dir(inode) \
1952 if (f2fs_has_inline_dentry(inode)) \
1953 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
1955 #define stat_dec_inline_dir(inode) \
1957 if (f2fs_has_inline_dentry(inode)) \
1958 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
1960 #define stat_inc_seg_type(sbi, curseg) \
1961 ((sbi)->segment_count[(curseg)->alloc_type]++)
1962 #define stat_inc_block_count(sbi, curseg) \
1963 ((sbi)->block_count[(curseg)->alloc_type]++)
1964 #define stat_inc_inplace_blocks(sbi) \
1965 (atomic_inc(&(sbi)->inplace_count))
1966 #define stat_inc_seg_count(sbi, type, gc_type) \
1968 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1970 if (type == SUM_TYPE_DATA) { \
1972 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1975 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1979 #define stat_inc_tot_blk_count(si, blks) \
1980 (si->tot_blks += (blks))
1982 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
1984 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1985 stat_inc_tot_blk_count(si, blks); \
1986 si->data_blks += (blks); \
1987 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
1990 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
1992 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
1993 stat_inc_tot_blk_count(si, blks); \
1994 si->node_blks += (blks); \
1995 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
1998 int f2fs_build_stats(struct f2fs_sb_info
*);
1999 void f2fs_destroy_stats(struct f2fs_sb_info
*);
2000 int __init
f2fs_create_root_stats(void);
2001 void f2fs_destroy_root_stats(void);
2003 #define stat_inc_cp_count(si)
2004 #define stat_inc_call_count(si)
2005 #define stat_inc_bggc_count(si)
2006 #define stat_inc_dirty_dir(sbi)
2007 #define stat_dec_dirty_dir(sbi)
2008 #define stat_inc_total_hit(sb)
2009 #define stat_inc_rbtree_node_hit(sb)
2010 #define stat_inc_largest_node_hit(sbi)
2011 #define stat_inc_cached_node_hit(sbi)
2012 #define stat_inc_inline_xattr(inode)
2013 #define stat_dec_inline_xattr(inode)
2014 #define stat_inc_inline_inode(inode)
2015 #define stat_dec_inline_inode(inode)
2016 #define stat_inc_inline_dir(inode)
2017 #define stat_dec_inline_dir(inode)
2018 #define stat_inc_seg_type(sbi, curseg)
2019 #define stat_inc_block_count(sbi, curseg)
2020 #define stat_inc_inplace_blocks(sbi)
2021 #define stat_inc_seg_count(sbi, type, gc_type)
2022 #define stat_inc_tot_blk_count(si, blks)
2023 #define stat_inc_data_blk_count(sbi, blks, gc_type)
2024 #define stat_inc_node_blk_count(sbi, blks, gc_type)
2026 static inline int f2fs_build_stats(struct f2fs_sb_info
*sbi
) { return 0; }
2027 static inline void f2fs_destroy_stats(struct f2fs_sb_info
*sbi
) { }
2028 static inline int __init
f2fs_create_root_stats(void) { return 0; }
2029 static inline void f2fs_destroy_root_stats(void) { }
2032 extern const struct file_operations f2fs_dir_operations
;
2033 extern const struct file_operations f2fs_file_operations
;
2034 extern const struct inode_operations f2fs_file_inode_operations
;
2035 extern const struct address_space_operations f2fs_dblock_aops
;
2036 extern const struct address_space_operations f2fs_node_aops
;
2037 extern const struct address_space_operations f2fs_meta_aops
;
2038 extern const struct inode_operations f2fs_dir_inode_operations
;
2039 extern const struct inode_operations f2fs_symlink_inode_operations
;
2040 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations
;
2041 extern const struct inode_operations f2fs_special_inode_operations
;
2042 extern struct kmem_cache
*inode_entry_slab
;
2047 bool f2fs_may_inline_data(struct inode
*);
2048 bool f2fs_may_inline_dentry(struct inode
*);
2049 void read_inline_data(struct page
*, struct page
*);
2050 bool truncate_inline_inode(struct page
*, u64
);
2051 int f2fs_read_inline_data(struct inode
*, struct page
*);
2052 int f2fs_convert_inline_page(struct dnode_of_data
*, struct page
*);
2053 int f2fs_convert_inline_inode(struct inode
*);
2054 int f2fs_write_inline_data(struct inode
*, struct page
*);
2055 bool recover_inline_data(struct inode
*, struct page
*);
2056 struct f2fs_dir_entry
*find_in_inline_dir(struct inode
*,
2057 struct f2fs_filename
*, struct page
**);
2058 struct f2fs_dir_entry
*f2fs_parent_inline_dir(struct inode
*, struct page
**);
2059 int make_empty_inline_dir(struct inode
*inode
, struct inode
*, struct page
*);
2060 int f2fs_add_inline_entry(struct inode
*, const struct qstr
*, struct inode
*,
2062 void f2fs_delete_inline_entry(struct f2fs_dir_entry
*, struct page
*,
2063 struct inode
*, struct inode
*);
2064 bool f2fs_empty_inline_dir(struct inode
*);
2065 int f2fs_read_inline_dir(struct file
*, struct dir_context
*,
2067 int f2fs_inline_data_fiemap(struct inode
*,
2068 struct fiemap_extent_info
*, __u64
, __u64
);
2073 unsigned long f2fs_shrink_count(struct shrinker
*, struct shrink_control
*);
2074 unsigned long f2fs_shrink_scan(struct shrinker
*, struct shrink_control
*);
2075 void f2fs_join_shrinker(struct f2fs_sb_info
*);
2076 void f2fs_leave_shrinker(struct f2fs_sb_info
*);
2081 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info
*, int);
2082 void f2fs_init_extent_tree(struct inode
*, struct f2fs_extent
*);
2083 unsigned int f2fs_destroy_extent_node(struct inode
*);
2084 void f2fs_destroy_extent_tree(struct inode
*);
2085 bool f2fs_lookup_extent_cache(struct inode
*, pgoff_t
, struct extent_info
*);
2086 void f2fs_update_extent_cache(struct dnode_of_data
*);
2087 void f2fs_update_extent_cache_range(struct dnode_of_data
*dn
,
2088 pgoff_t
, block_t
, unsigned int);
2089 void init_extent_cache_info(struct f2fs_sb_info
*);
2090 int __init
create_extent_cache(void);
2091 void destroy_extent_cache(void);
2096 static inline int f2fs_encrypted_inode(struct inode
*inode
)
2098 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2099 return file_is_encrypt(inode
);
2105 static inline void f2fs_set_encrypted_inode(struct inode
*inode
)
2107 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2108 file_set_encrypt(inode
);
2112 static inline bool f2fs_bio_encrypted(struct bio
*bio
)
2114 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2115 return unlikely(bio
->bi_private
!= NULL
);
2121 static inline int f2fs_sb_has_crypto(struct super_block
*sb
)
2123 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2124 return F2FS_HAS_FEATURE(sb
, F2FS_FEATURE_ENCRYPT
);
2130 static inline bool f2fs_may_encrypt(struct inode
*inode
)
2132 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2133 mode_t mode
= inode
->i_mode
;
2135 return (S_ISREG(mode
) || S_ISDIR(mode
) || S_ISLNK(mode
));
2141 /* crypto_policy.c */
2142 int f2fs_is_child_context_consistent_with_parent(struct inode
*,
2144 int f2fs_inherit_context(struct inode
*, struct inode
*, struct page
*);
2145 int f2fs_process_policy(const struct f2fs_encryption_policy
*, struct inode
*);
2146 int f2fs_get_policy(struct inode
*, struct f2fs_encryption_policy
*);
2149 extern struct kmem_cache
*f2fs_crypt_info_cachep
;
2150 bool f2fs_valid_contents_enc_mode(uint32_t);
2151 uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2152 struct f2fs_crypto_ctx
*f2fs_get_crypto_ctx(struct inode
*);
2153 void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx
*);
2154 struct page
*f2fs_encrypt(struct inode
*, struct page
*);
2155 int f2fs_decrypt(struct f2fs_crypto_ctx
*, struct page
*);
2156 int f2fs_decrypt_one(struct inode
*, struct page
*);
2157 void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx
*, struct bio
*);
2160 void f2fs_free_encryption_info(struct inode
*, struct f2fs_crypt_info
*);
2161 int _f2fs_get_encryption_info(struct inode
*inode
);
2163 /* crypto_fname.c */
2164 bool f2fs_valid_filenames_enc_mode(uint32_t);
2165 u32
f2fs_fname_crypto_round_up(u32
, u32
);
2166 int f2fs_fname_crypto_alloc_buffer(struct inode
*, u32
, struct f2fs_str
*);
2167 int f2fs_fname_disk_to_usr(struct inode
*, f2fs_hash_t
*,
2168 const struct f2fs_str
*, struct f2fs_str
*);
2169 int f2fs_fname_usr_to_disk(struct inode
*, const struct qstr
*,
2172 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2173 void f2fs_restore_and_release_control_page(struct page
**);
2174 void f2fs_restore_control_page(struct page
*);
2176 int __init
f2fs_init_crypto(void);
2177 int f2fs_crypto_initialize(void);
2178 void f2fs_exit_crypto(void);
2180 int f2fs_has_encryption_key(struct inode
*);
2182 static inline int f2fs_get_encryption_info(struct inode
*inode
)
2184 struct f2fs_crypt_info
*ci
= F2FS_I(inode
)->i_crypt_info
;
2187 (ci
->ci_keyring_key
&&
2188 (ci
->ci_keyring_key
->flags
& ((1 << KEY_FLAG_INVALIDATED
) |
2189 (1 << KEY_FLAG_REVOKED
) |
2190 (1 << KEY_FLAG_DEAD
)))))
2191 return _f2fs_get_encryption_info(inode
);
2195 void f2fs_fname_crypto_free_buffer(struct f2fs_str
*);
2196 int f2fs_fname_setup_filename(struct inode
*, const struct qstr
*,
2197 int lookup
, struct f2fs_filename
*);
2198 void f2fs_fname_free_filename(struct f2fs_filename
*);
2200 static inline void f2fs_restore_and_release_control_page(struct page
**p
) { }
2201 static inline void f2fs_restore_control_page(struct page
*p
) { }
2203 static inline int __init
f2fs_init_crypto(void) { return 0; }
2204 static inline void f2fs_exit_crypto(void) { }
2206 static inline int f2fs_has_encryption_key(struct inode
*i
) { return 0; }
2207 static inline int f2fs_get_encryption_info(struct inode
*i
) { return 0; }
2208 static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str
*p
) { }
2210 static inline int f2fs_fname_setup_filename(struct inode
*dir
,
2211 const struct qstr
*iname
,
2212 int lookup
, struct f2fs_filename
*fname
)
2214 memset(fname
, 0, sizeof(struct f2fs_filename
));
2215 fname
->usr_fname
= iname
;
2216 fname
->disk_name
.name
= (unsigned char *)iname
->name
;
2217 fname
->disk_name
.len
= iname
->len
;
2221 static inline void f2fs_fname_free_filename(struct f2fs_filename
*fname
) { }