?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
x86/topology: Update the 'cpu cores' field in /proc/cpuinfo correctly across CPU...
[cris-mirror.git] / fs / f2fs / f2fs.h
blob6300ac5bcbe4950b8154e97f3e52d972e02b8373
1 /*
2 * fs/f2fs/f2fs.h
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
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.
10 */
11 #ifndef _LINUX_F2FS_H
12 #define _LINUX_F2FS_H
13
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/cred.h>
23 #include <linux/vmalloc.h>
24 #include <linux/bio.h>
25 #include <linux/blkdev.h>
26 #include <linux/quotaops.h>
27 #include <crypto/hash.h>
28
29 #define __FS_HAS_ENCRYPTION IS_ENABLED(CONFIG_F2FS_FS_ENCRYPTION)
30 #include <linux/fscrypt.h>
31
32 #ifdef CONFIG_F2FS_CHECK_FS
33 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
34 #else
35 #define f2fs_bug_on(sbi, condition) \
36 do { \
37 if (unlikely(condition)) { \
38 WARN_ON(1); \
39 set_sbi_flag(sbi, SBI_NEED_FSCK); \
40 } \
41 } while (0)
42 #endif
43
44 #ifdef CONFIG_F2FS_FAULT_INJECTION
45 enum {
46 FAULT_KMALLOC,
47 FAULT_KVMALLOC,
48 FAULT_PAGE_ALLOC,
49 FAULT_PAGE_GET,
50 FAULT_ALLOC_BIO,
51 FAULT_ALLOC_NID,
52 FAULT_ORPHAN,
53 FAULT_BLOCK,
54 FAULT_DIR_DEPTH,
55 FAULT_EVICT_INODE,
56 FAULT_TRUNCATE,
57 FAULT_IO,
58 FAULT_CHECKPOINT,
59 FAULT_MAX,
60 };
61
62 struct f2fs_fault_info {
63 atomic_t inject_ops;
64 unsigned int inject_rate;
65 unsigned int inject_type;
66 };
67
68 extern char *fault_name[FAULT_MAX];
69 #define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
70 #endif
71
72 /*
73 * For mount options
74 */
75 #define F2FS_MOUNT_BG_GC 0x00000001
76 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
77 #define F2FS_MOUNT_DISCARD 0x00000004
78 #define F2FS_MOUNT_NOHEAP 0x00000008
79 #define F2FS_MOUNT_XATTR_USER 0x00000010
80 #define F2FS_MOUNT_POSIX_ACL 0x00000020
81 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
82 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
83 #define F2FS_MOUNT_INLINE_DATA 0x00000100
84 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
85 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
86 #define F2FS_MOUNT_NOBARRIER 0x00000800
87 #define F2FS_MOUNT_FASTBOOT 0x00001000
88 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
89 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
90 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
91 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
92 #define F2FS_MOUNT_ADAPTIVE 0x00020000
93 #define F2FS_MOUNT_LFS 0x00040000
94 #define F2FS_MOUNT_USRQUOTA 0x00080000
95 #define F2FS_MOUNT_GRPQUOTA 0x00100000
96 #define F2FS_MOUNT_PRJQUOTA 0x00200000
97 #define F2FS_MOUNT_QUOTA 0x00400000
98 #define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000
99 #define F2FS_MOUNT_RESERVE_ROOT 0x01000000
100
101 #define clear_opt(sbi, option) ((sbi)->mount_opt.opt &= ~F2FS_MOUNT_##option)
102 #define set_opt(sbi, option) ((sbi)->mount_opt.opt |= F2FS_MOUNT_##option)
103 #define test_opt(sbi, option) ((sbi)->mount_opt.opt & F2FS_MOUNT_##option)
104
105 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
106 typecheck(unsigned long long, b) && \
107 ((long long)((a) - (b)) > 0))
108
109 typedef u32 block_t; /*
110 * should not change u32, since it is the on-disk block
111 * address format, __le32.
112 */
113 typedef u32 nid_t;
114
115 struct f2fs_mount_info {
116 unsigned int opt;
117 };
118
119 #define F2FS_FEATURE_ENCRYPT 0x0001
120 #define F2FS_FEATURE_BLKZONED 0x0002
121 #define F2FS_FEATURE_ATOMIC_WRITE 0x0004
122 #define F2FS_FEATURE_EXTRA_ATTR 0x0008
123 #define F2FS_FEATURE_PRJQUOTA 0x0010
124 #define F2FS_FEATURE_INODE_CHKSUM 0x0020
125 #define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040
126 #define F2FS_FEATURE_QUOTA_INO 0x0080
127 #define F2FS_FEATURE_INODE_CRTIME 0x0100
128
129 #define F2FS_HAS_FEATURE(sb, mask) \
130 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
131 #define F2FS_SET_FEATURE(sb, mask) \
132 (F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask))
133 #define F2FS_CLEAR_FEATURE(sb, mask) \
134 (F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask))
135
136 /*
137 * Default values for user and/or group using reserved blocks
138 */
139 #define F2FS_DEF_RESUID 0
140 #define F2FS_DEF_RESGID 0
141
142 /*
143 * For checkpoint manager
144 */
145 enum {
146 NAT_BITMAP,
147 SIT_BITMAP
148 };
149
150 #define CP_UMOUNT 0x00000001
151 #define CP_FASTBOOT 0x00000002
152 #define CP_SYNC 0x00000004
153 #define CP_RECOVERY 0x00000008
154 #define CP_DISCARD 0x00000010
155 #define CP_TRIMMED 0x00000020
156
157 #define DEF_BATCHED_TRIM_SECTIONS 2048
158 #define BATCHED_TRIM_SEGMENTS(sbi) \
159 (GET_SEG_FROM_SEC(sbi, SM_I(sbi)->trim_sections))
160 #define BATCHED_TRIM_BLOCKS(sbi) \
161 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
162 #define MAX_DISCARD_BLOCKS(sbi) BLKS_PER_SEC(sbi)
163 #define DEF_MAX_DISCARD_REQUEST 8 /* issue 8 discards per round */
164 #define DEF_MIN_DISCARD_ISSUE_TIME 50 /* 50 ms, if exists */
165 #define DEF_MAX_DISCARD_ISSUE_TIME 60000 /* 60 s, if no candidates */
166 #define DEF_CP_INTERVAL 60 /* 60 secs */
167 #define DEF_IDLE_INTERVAL 5 /* 5 secs */
168
169 struct cp_control {
170 int reason;
171 __u64 trim_start;
172 __u64 trim_end;
173 __u64 trim_minlen;
174 };
175
176 /*
177 * For CP/NAT/SIT/SSA readahead
178 */
179 enum {
180 META_CP,
181 META_NAT,
182 META_SIT,
183 META_SSA,
184 META_POR,
185 };
186
187 /* for the list of ino */
188 enum {
189 ORPHAN_INO, /* for orphan ino list */
190 APPEND_INO, /* for append ino list */
191 UPDATE_INO, /* for update ino list */
192 TRANS_DIR_INO, /* for trasactions dir ino list */
193 FLUSH_INO, /* for multiple device flushing */
194 MAX_INO_ENTRY, /* max. list */
195 };
196
197 struct ino_entry {
198 struct list_head list; /* list head */
199 nid_t ino; /* inode number */
200 unsigned int dirty_device; /* dirty device bitmap */
201 };
202
203 /* for the list of inodes to be GCed */
204 struct inode_entry {
205 struct list_head list; /* list head */
206 struct inode *inode; /* vfs inode pointer */
207 };
208
209 /* for the bitmap indicate blocks to be discarded */
210 struct discard_entry {
211 struct list_head list; /* list head */
212 block_t start_blkaddr; /* start blockaddr of current segment */
213 unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */
214 };
215
216 /* default discard granularity of inner discard thread, unit: block count */
217 #define DEFAULT_DISCARD_GRANULARITY 16
218
219 /* max discard pend list number */
220 #define MAX_PLIST_NUM 512
221 #define plist_idx(blk_num) ((blk_num) >= MAX_PLIST_NUM ? \
222 (MAX_PLIST_NUM - 1) : (blk_num - 1))
223
224 enum {
225 D_PREP,
226 D_SUBMIT,
227 D_DONE,
228 };
229
230 struct discard_info {
231 block_t lstart; /* logical start address */
232 block_t len; /* length */
233 block_t start; /* actual start address in dev */
234 };
235
236 struct discard_cmd {
237 struct rb_node rb_node; /* rb node located in rb-tree */
238 union {
239 struct {
240 block_t lstart; /* logical start address */
241 block_t len; /* length */
242 block_t start; /* actual start address in dev */
243 };
244 struct discard_info di; /* discard info */
245
246 };
247 struct list_head list; /* command list */
248 struct completion wait; /* compleation */
249 struct block_device *bdev; /* bdev */
250 unsigned short ref; /* reference count */
251 unsigned char state; /* state */
252 int error; /* bio error */
253 };
254
255 enum {
256 DPOLICY_BG,
257 DPOLICY_FORCE,
258 DPOLICY_FSTRIM,
259 DPOLICY_UMOUNT,
260 MAX_DPOLICY,
261 };
262
263 struct discard_policy {
264 int type; /* type of discard */
265 unsigned int min_interval; /* used for candidates exist */
266 unsigned int max_interval; /* used for candidates not exist */
267 unsigned int max_requests; /* # of discards issued per round */
268 unsigned int io_aware_gran; /* minimum granularity discard not be aware of I/O */
269 bool io_aware; /* issue discard in idle time */
270 bool sync; /* submit discard with REQ_SYNC flag */
271 unsigned int granularity; /* discard granularity */
272 };
273
274 struct discard_cmd_control {
275 struct task_struct *f2fs_issue_discard; /* discard thread */
276 struct list_head entry_list; /* 4KB discard entry list */
277 struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */
278 struct list_head wait_list; /* store on-flushing entries */
279 struct list_head fstrim_list; /* in-flight discard from fstrim */
280 wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */
281 unsigned int discard_wake; /* to wake up discard thread */
282 struct mutex cmd_lock;
283 unsigned int nr_discards; /* # of discards in the list */
284 unsigned int max_discards; /* max. discards to be issued */
285 unsigned int discard_granularity; /* discard granularity */
286 unsigned int undiscard_blks; /* # of undiscard blocks */
287 atomic_t issued_discard; /* # of issued discard */
288 atomic_t issing_discard; /* # of issing discard */
289 atomic_t discard_cmd_cnt; /* # of cached cmd count */
290 struct rb_root root; /* root of discard rb-tree */
291 };
292
293 /* for the list of fsync inodes, used only during recovery */
294 struct fsync_inode_entry {
295 struct list_head list; /* list head */
296 struct inode *inode; /* vfs inode pointer */
297 block_t blkaddr; /* block address locating the last fsync */
298 block_t last_dentry; /* block address locating the last dentry */
299 };
300
301 #define nats_in_cursum(jnl) (le16_to_cpu((jnl)->n_nats))
302 #define sits_in_cursum(jnl) (le16_to_cpu((jnl)->n_sits))
303
304 #define nat_in_journal(jnl, i) ((jnl)->nat_j.entries[i].ne)
305 #define nid_in_journal(jnl, i) ((jnl)->nat_j.entries[i].nid)
306 #define sit_in_journal(jnl, i) ((jnl)->sit_j.entries[i].se)
307 #define segno_in_journal(jnl, i) ((jnl)->sit_j.entries[i].segno)
308
309 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
310 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
311
312 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
313 {
314 int before = nats_in_cursum(journal);
315
316 journal->n_nats = cpu_to_le16(before + i);
317 return before;
318 }
319
320 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
321 {
322 int before = sits_in_cursum(journal);
323
324 journal->n_sits = cpu_to_le16(before + i);
325 return before;
326 }
327
328 static inline bool __has_cursum_space(struct f2fs_journal *journal,
329 int size, int type)
330 {
331 if (type == NAT_JOURNAL)
332 return size <= MAX_NAT_JENTRIES(journal);
333 return size <= MAX_SIT_JENTRIES(journal);
334 }
335
336 /*
337 * ioctl commands
338 */
339 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
340 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
341 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
342
343 #define F2FS_IOCTL_MAGIC 0xf5
344 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
345 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
346 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
347 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
348 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
349 #define F2FS_IOC_GARBAGE_COLLECT _IOW(F2FS_IOCTL_MAGIC, 6, __u32)
350 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
351 #define F2FS_IOC_DEFRAGMENT _IOWR(F2FS_IOCTL_MAGIC, 8, \
352 struct f2fs_defragment)
353 #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
354 struct f2fs_move_range)
355 #define F2FS_IOC_FLUSH_DEVICE _IOW(F2FS_IOCTL_MAGIC, 10, \
356 struct f2fs_flush_device)
357 #define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \
358 struct f2fs_gc_range)
359 #define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32)
360 #define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
361 #define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
362 #define F2FS_IOC_PRECACHE_EXTENTS _IO(F2FS_IOCTL_MAGIC, 15)
363
364 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
365 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
366 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
367
368 /*
369 * should be same as XFS_IOC_GOINGDOWN.
370 * Flags for going down operation used by FS_IOC_GOINGDOWN
371 */
372 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
373 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
374 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
375 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
376 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
377
378 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
379 /*
380 * ioctl commands in 32 bit emulation
381 */
382 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
383 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
384 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
385 #endif
386
387 #define F2FS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
388 #define F2FS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
389
390 struct f2fs_gc_range {
391 u32 sync;
392 u64 start;
393 u64 len;
394 };
395
396 struct f2fs_defragment {
397 u64 start;
398 u64 len;
399 };
400
401 struct f2fs_move_range {
402 u32 dst_fd; /* destination fd */
403 u64 pos_in; /* start position in src_fd */
404 u64 pos_out; /* start position in dst_fd */
405 u64 len; /* size to move */
406 };
407
408 struct f2fs_flush_device {
409 u32 dev_num; /* device number to flush */
410 u32 segments; /* # of segments to flush */
411 };
412
413 /* for inline stuff */
414 #define DEF_INLINE_RESERVED_SIZE 1
415 #define DEF_MIN_INLINE_SIZE 1
416 static inline int get_extra_isize(struct inode *inode);
417 static inline int get_inline_xattr_addrs(struct inode *inode);
418 #define MAX_INLINE_DATA(inode) (sizeof(__le32) * \
419 (CUR_ADDRS_PER_INODE(inode) - \
420 get_inline_xattr_addrs(inode) - \
421 DEF_INLINE_RESERVED_SIZE))
422
423 /* for inline dir */
424 #define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
425 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
426 BITS_PER_BYTE + 1))
427 #define INLINE_DENTRY_BITMAP_SIZE(inode) ((NR_INLINE_DENTRY(inode) + \
428 BITS_PER_BYTE - 1) / BITS_PER_BYTE)
429 #define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \
430 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
431 NR_INLINE_DENTRY(inode) + \
432 INLINE_DENTRY_BITMAP_SIZE(inode)))
433
434 /*
435 * For INODE and NODE manager
436 */
437 /* for directory operations */
438 struct f2fs_dentry_ptr {
439 struct inode *inode;
440 void *bitmap;
441 struct f2fs_dir_entry *dentry;
442 __u8 (*filename)[F2FS_SLOT_LEN];
443 int max;
444 int nr_bitmap;
445 };
446
447 static inline void make_dentry_ptr_block(struct inode *inode,
448 struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
449 {
450 d->inode = inode;
451 d->max = NR_DENTRY_IN_BLOCK;
452 d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
453 d->bitmap = &t->dentry_bitmap;
454 d->dentry = t->dentry;
455 d->filename = t->filename;
456 }
457
458 static inline void make_dentry_ptr_inline(struct inode *inode,
459 struct f2fs_dentry_ptr *d, void *t)
460 {
461 int entry_cnt = NR_INLINE_DENTRY(inode);
462 int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
463 int reserved_size = INLINE_RESERVED_SIZE(inode);
464
465 d->inode = inode;
466 d->max = entry_cnt;
467 d->nr_bitmap = bitmap_size;
468 d->bitmap = t;
469 d->dentry = t + bitmap_size + reserved_size;
470 d->filename = t + bitmap_size + reserved_size +
471 SIZE_OF_DIR_ENTRY * entry_cnt;
472 }
473
474 /*
475 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
476 * as its node offset to distinguish from index node blocks.
477 * But some bits are used to mark the node block.
478 */
479 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
480 >> OFFSET_BIT_SHIFT)
481 enum {
482 ALLOC_NODE, /* allocate a new node page if needed */
483 LOOKUP_NODE, /* look up a node without readahead */
484 LOOKUP_NODE_RA, /*
485 * look up a node with readahead called
486 * by get_data_block.
487 */
488 };
489
490 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
491
492 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
493
494 /* vector size for gang look-up from extent cache that consists of radix tree */
495 #define EXT_TREE_VEC_SIZE 64
496
497 /* for in-memory extent cache entry */
498 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
499
500 /* number of extent info in extent cache we try to shrink */
501 #define EXTENT_CACHE_SHRINK_NUMBER 128
502
503 struct rb_entry {
504 struct rb_node rb_node; /* rb node located in rb-tree */
505 unsigned int ofs; /* start offset of the entry */
506 unsigned int len; /* length of the entry */
507 };
508
509 struct extent_info {
510 unsigned int fofs; /* start offset in a file */
511 unsigned int len; /* length of the extent */
512 u32 blk; /* start block address of the extent */
513 };
514
515 struct extent_node {
516 struct rb_node rb_node;
517 union {
518 struct {
519 unsigned int fofs;
520 unsigned int len;
521 u32 blk;
522 };
523 struct extent_info ei; /* extent info */
524
525 };
526 struct list_head list; /* node in global extent list of sbi */
527 struct extent_tree *et; /* extent tree pointer */
528 };
529
530 struct extent_tree {
531 nid_t ino; /* inode number */
532 struct rb_root root; /* root of extent info rb-tree */
533 struct extent_node *cached_en; /* recently accessed extent node */
534 struct extent_info largest; /* largested extent info */
535 struct list_head list; /* to be used by sbi->zombie_list */
536 rwlock_t lock; /* protect extent info rb-tree */
537 atomic_t node_cnt; /* # of extent node in rb-tree*/
538 };
539
540 /*
541 * This structure is taken from ext4_map_blocks.
542 *
543 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
544 */
545 #define F2FS_MAP_NEW (1 << BH_New)
546 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
547 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
548 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
549 F2FS_MAP_UNWRITTEN)
550
551 struct f2fs_map_blocks {
552 block_t m_pblk;
553 block_t m_lblk;
554 unsigned int m_len;
555 unsigned int m_flags;
556 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
557 pgoff_t *m_next_extent; /* point to next possible extent */
558 int m_seg_type;
559 };
560
561 /* for flag in get_data_block */
562 enum {
563 F2FS_GET_BLOCK_DEFAULT,
564 F2FS_GET_BLOCK_FIEMAP,
565 F2FS_GET_BLOCK_BMAP,
566 F2FS_GET_BLOCK_PRE_DIO,
567 F2FS_GET_BLOCK_PRE_AIO,
568 F2FS_GET_BLOCK_PRECACHE,
569 };
570
571 /*
572 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
573 */
574 #define FADVISE_COLD_BIT 0x01
575 #define FADVISE_LOST_PINO_BIT 0x02
576 #define FADVISE_ENCRYPT_BIT 0x04
577 #define FADVISE_ENC_NAME_BIT 0x08
578 #define FADVISE_KEEP_SIZE_BIT 0x10
579
580 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
581 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
582 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
583 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
584 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
585 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
586 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
587 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
588 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
589 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
590 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
591 #define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT)
592 #define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
593
594 #define DEF_DIR_LEVEL 0
595
596 struct f2fs_inode_info {
597 struct inode vfs_inode; /* serve a vfs inode */
598 unsigned long i_flags; /* keep an inode flags for ioctl */
599 unsigned char i_advise; /* use to give file attribute hints */
600 unsigned char i_dir_level; /* use for dentry level for large dir */
601 union {
602 unsigned int i_current_depth; /* only for directory depth */
603 unsigned short i_gc_failures; /* only for regular file */
604 };
605 unsigned int i_pino; /* parent inode number */
606 umode_t i_acl_mode; /* keep file acl mode temporarily */
607
608 /* Use below internally in f2fs*/
609 unsigned long flags; /* use to pass per-file flags */
610 struct rw_semaphore i_sem; /* protect fi info */
611 atomic_t dirty_pages; /* # of dirty pages */
612 f2fs_hash_t chash; /* hash value of given file name */
613 unsigned int clevel; /* maximum level of given file name */
614 struct task_struct *task; /* lookup and create consistency */
615 struct task_struct *cp_task; /* separate cp/wb IO stats*/
616 nid_t i_xattr_nid; /* node id that contains xattrs */
617 loff_t last_disk_size; /* lastly written file size */
618
619 #ifdef CONFIG_QUOTA
620 struct dquot *i_dquot[MAXQUOTAS];
621
622 /* quota space reservation, managed internally by quota code */
623 qsize_t i_reserved_quota;
624 #endif
625 struct list_head dirty_list; /* dirty list for dirs and files */
626 struct list_head gdirty_list; /* linked in global dirty list */
627 struct list_head inmem_ilist; /* list for inmem inodes */
628 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
629 struct task_struct *inmem_task; /* store inmemory task */
630 struct mutex inmem_lock; /* lock for inmemory pages */
631 struct extent_tree *extent_tree; /* cached extent_tree entry */
632 struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
633 struct rw_semaphore i_mmap_sem;
634 struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
635
636 int i_extra_isize; /* size of extra space located in i_addr */
637 kprojid_t i_projid; /* id for project quota */
638 int i_inline_xattr_size; /* inline xattr size */
639 struct timespec i_crtime; /* inode creation time */
640 };
641
642 static inline void get_extent_info(struct extent_info *ext,
643 struct f2fs_extent *i_ext)
644 {
645 ext->fofs = le32_to_cpu(i_ext->fofs);
646 ext->blk = le32_to_cpu(i_ext->blk);
647 ext->len = le32_to_cpu(i_ext->len);
648 }
649
650 static inline void set_raw_extent(struct extent_info *ext,
651 struct f2fs_extent *i_ext)
652 {
653 i_ext->fofs = cpu_to_le32(ext->fofs);
654 i_ext->blk = cpu_to_le32(ext->blk);
655 i_ext->len = cpu_to_le32(ext->len);
656 }
657
658 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
659 u32 blk, unsigned int len)
660 {
661 ei->fofs = fofs;
662 ei->blk = blk;
663 ei->len = len;
664 }
665
666 static inline bool __is_discard_mergeable(struct discard_info *back,
667 struct discard_info *front)
668 {
669 return back->lstart + back->len == front->lstart;
670 }
671
672 static inline bool __is_discard_back_mergeable(struct discard_info *cur,
673 struct discard_info *back)
674 {
675 return __is_discard_mergeable(back, cur);
676 }
677
678 static inline bool __is_discard_front_mergeable(struct discard_info *cur,
679 struct discard_info *front)
680 {
681 return __is_discard_mergeable(cur, front);
682 }
683
684 static inline bool __is_extent_mergeable(struct extent_info *back,
685 struct extent_info *front)
686 {
687 return (back->fofs + back->len == front->fofs &&
688 back->blk + back->len == front->blk);
689 }
690
691 static inline bool __is_back_mergeable(struct extent_info *cur,
692 struct extent_info *back)
693 {
694 return __is_extent_mergeable(back, cur);
695 }
696
697 static inline bool __is_front_mergeable(struct extent_info *cur,
698 struct extent_info *front)
699 {
700 return __is_extent_mergeable(cur, front);
701 }
702
703 extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
704 static inline void __try_update_largest_extent(struct inode *inode,
705 struct extent_tree *et, struct extent_node *en)
706 {
707 if (en->ei.len > et->largest.len) {
708 et->largest = en->ei;
709 f2fs_mark_inode_dirty_sync(inode, true);
710 }
711 }
712
713 /*
714 * For free nid management
715 */
716 enum nid_state {
717 FREE_NID, /* newly added to free nid list */
718 PREALLOC_NID, /* it is preallocated */
719 MAX_NID_STATE,
720 };
721
722 struct f2fs_nm_info {
723 block_t nat_blkaddr; /* base disk address of NAT */
724 nid_t max_nid; /* maximum possible node ids */
725 nid_t available_nids; /* # of available node ids */
726 nid_t next_scan_nid; /* the next nid to be scanned */
727 unsigned int ram_thresh; /* control the memory footprint */
728 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
729 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
730
731 /* NAT cache management */
732 struct radix_tree_root nat_root;/* root of the nat entry cache */
733 struct radix_tree_root nat_set_root;/* root of the nat set cache */
734 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
735 struct list_head nat_entries; /* cached nat entry list (clean) */
736 unsigned int nat_cnt; /* the # of cached nat entries */
737 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
738 unsigned int nat_blocks; /* # of nat blocks */
739
740 /* free node ids management */
741 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
742 struct list_head free_nid_list; /* list for free nids excluding preallocated nids */
743 unsigned int nid_cnt[MAX_NID_STATE]; /* the number of free node id */
744 spinlock_t nid_list_lock; /* protect nid lists ops */
745 struct mutex build_lock; /* lock for build free nids */
746 unsigned char (*free_nid_bitmap)[NAT_ENTRY_BITMAP_SIZE];
747 unsigned char *nat_block_bitmap;
748 unsigned short *free_nid_count; /* free nid count of NAT block */
749
750 /* for checkpoint */
751 char *nat_bitmap; /* NAT bitmap pointer */
752
753 unsigned int nat_bits_blocks; /* # of nat bits blocks */
754 unsigned char *nat_bits; /* NAT bits blocks */
755 unsigned char *full_nat_bits; /* full NAT pages */
756 unsigned char *empty_nat_bits; /* empty NAT pages */
757 #ifdef CONFIG_F2FS_CHECK_FS
758 char *nat_bitmap_mir; /* NAT bitmap mirror */
759 #endif
760 int bitmap_size; /* bitmap size */
761 };
762
763 /*
764 * this structure is used as one of function parameters.
765 * all the information are dedicated to a given direct node block determined
766 * by the data offset in a file.
767 */
768 struct dnode_of_data {
769 struct inode *inode; /* vfs inode pointer */
770 struct page *inode_page; /* its inode page, NULL is possible */
771 struct page *node_page; /* cached direct node page */
772 nid_t nid; /* node id of the direct node block */
773 unsigned int ofs_in_node; /* data offset in the node page */
774 bool inode_page_locked; /* inode page is locked or not */
775 bool node_changed; /* is node block changed */
776 char cur_level; /* level of hole node page */
777 char max_level; /* level of current page located */
778 block_t data_blkaddr; /* block address of the node block */
779 };
780
781 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
782 struct page *ipage, struct page *npage, nid_t nid)
783 {
784 memset(dn, 0, sizeof(*dn));
785 dn->inode = inode;
786 dn->inode_page = ipage;
787 dn->node_page = npage;
788 dn->nid = nid;
789 }
790
791 /*
792 * For SIT manager
793 *
794 * By default, there are 6 active log areas across the whole main area.
795 * When considering hot and cold data separation to reduce cleaning overhead,
796 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
797 * respectively.
798 * In the current design, you should not change the numbers intentionally.
799 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
800 * logs individually according to the underlying devices. (default: 6)
801 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
802 * data and 8 for node logs.
803 */
804 #define NR_CURSEG_DATA_TYPE (3)
805 #define NR_CURSEG_NODE_TYPE (3)
806 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
807
808 enum {
809 CURSEG_HOT_DATA = 0, /* directory entry blocks */
810 CURSEG_WARM_DATA, /* data blocks */
811 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
812 CURSEG_HOT_NODE, /* direct node blocks of directory files */
813 CURSEG_WARM_NODE, /* direct node blocks of normal files */
814 CURSEG_COLD_NODE, /* indirect node blocks */
815 NO_CHECK_TYPE,
816 };
817
818 struct flush_cmd {
819 struct completion wait;
820 struct llist_node llnode;
821 nid_t ino;
822 int ret;
823 };
824
825 struct flush_cmd_control {
826 struct task_struct *f2fs_issue_flush; /* flush thread */
827 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
828 atomic_t issued_flush; /* # of issued flushes */
829 atomic_t issing_flush; /* # of issing flushes */
830 struct llist_head issue_list; /* list for command issue */
831 struct llist_node *dispatch_list; /* list for command dispatch */
832 };
833
834 struct f2fs_sm_info {
835 struct sit_info *sit_info; /* whole segment information */
836 struct free_segmap_info *free_info; /* free segment information */
837 struct dirty_seglist_info *dirty_info; /* dirty segment information */
838 struct curseg_info *curseg_array; /* active segment information */
839
840 struct rw_semaphore curseg_lock; /* for preventing curseg change */
841
842 block_t seg0_blkaddr; /* block address of 0'th segment */
843 block_t main_blkaddr; /* start block address of main area */
844 block_t ssa_blkaddr; /* start block address of SSA area */
845
846 unsigned int segment_count; /* total # of segments */
847 unsigned int main_segments; /* # of segments in main area */
848 unsigned int reserved_segments; /* # of reserved segments */
849 unsigned int ovp_segments; /* # of overprovision segments */
850
851 /* a threshold to reclaim prefree segments */
852 unsigned int rec_prefree_segments;
853
854 /* for batched trimming */
855 unsigned int trim_sections; /* # of sections to trim */
856
857 struct list_head sit_entry_set; /* sit entry set list */
858
859 unsigned int ipu_policy; /* in-place-update policy */
860 unsigned int min_ipu_util; /* in-place-update threshold */
861 unsigned int min_fsync_blocks; /* threshold for fsync */
862 unsigned int min_hot_blocks; /* threshold for hot block allocation */
863 unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */
864
865 /* for flush command control */
866 struct flush_cmd_control *fcc_info;
867
868 /* for discard command control */
869 struct discard_cmd_control *dcc_info;
870 };
871
872 /*
873 * For superblock
874 */
875 /*
876 * COUNT_TYPE for monitoring
877 *
878 * f2fs monitors the number of several block types such as on-writeback,
879 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
880 */
881 #define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
882 enum count_type {
883 F2FS_DIRTY_DENTS,
884 F2FS_DIRTY_DATA,
885 F2FS_DIRTY_QDATA,
886 F2FS_DIRTY_NODES,
887 F2FS_DIRTY_META,
888 F2FS_INMEM_PAGES,
889 F2FS_DIRTY_IMETA,
890 F2FS_WB_CP_DATA,
891 F2FS_WB_DATA,
892 NR_COUNT_TYPE,
893 };
894
895 /*
896 * The below are the page types of bios used in submit_bio().
897 * The available types are:
898 * DATA User data pages. It operates as async mode.
899 * NODE Node pages. It operates as async mode.
900 * META FS metadata pages such as SIT, NAT, CP.
901 * NR_PAGE_TYPE The number of page types.
902 * META_FLUSH Make sure the previous pages are written
903 * with waiting the bio's completion
904 * ... Only can be used with META.
905 */
906 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
907 enum page_type {
908 DATA,
909 NODE,
910 META,
911 NR_PAGE_TYPE,
912 META_FLUSH,
913 INMEM, /* the below types are used by tracepoints only. */
914 INMEM_DROP,
915 INMEM_INVALIDATE,
916 INMEM_REVOKE,
917 IPU,
918 OPU,
919 };
920
921 enum temp_type {
922 HOT = 0, /* must be zero for meta bio */
923 WARM,
924 COLD,
925 NR_TEMP_TYPE,
926 };
927
928 enum need_lock_type {
929 LOCK_REQ = 0,
930 LOCK_DONE,
931 LOCK_RETRY,
932 };
933
934 enum cp_reason_type {
935 CP_NO_NEEDED,
936 CP_NON_REGULAR,
937 CP_HARDLINK,
938 CP_SB_NEED_CP,
939 CP_WRONG_PINO,
940 CP_NO_SPC_ROLL,
941 CP_NODE_NEED_CP,
942 CP_FASTBOOT_MODE,
943 CP_SPEC_LOG_NUM,
944 CP_RECOVER_DIR,
945 };
946
947 enum iostat_type {
948 APP_DIRECT_IO, /* app direct IOs */
949 APP_BUFFERED_IO, /* app buffered IOs */
950 APP_WRITE_IO, /* app write IOs */
951 APP_MAPPED_IO, /* app mapped IOs */
952 FS_DATA_IO, /* data IOs from kworker/fsync/reclaimer */
953 FS_NODE_IO, /* node IOs from kworker/fsync/reclaimer */
954 FS_META_IO, /* meta IOs from kworker/reclaimer */
955 FS_GC_DATA_IO, /* data IOs from forground gc */
956 FS_GC_NODE_IO, /* node IOs from forground gc */
957 FS_CP_DATA_IO, /* data IOs from checkpoint */
958 FS_CP_NODE_IO, /* node IOs from checkpoint */
959 FS_CP_META_IO, /* meta IOs from checkpoint */
960 FS_DISCARD, /* discard */
961 NR_IO_TYPE,
962 };
963
964 struct f2fs_io_info {
965 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
966 nid_t ino; /* inode number */
967 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
968 enum temp_type temp; /* contains HOT/WARM/COLD */
969 int op; /* contains REQ_OP_ */
970 int op_flags; /* req_flag_bits */
971 block_t new_blkaddr; /* new block address to be written */
972 block_t old_blkaddr; /* old block address before Cow */
973 struct page *page; /* page to be written */
974 struct page *encrypted_page; /* encrypted page */
975 struct list_head list; /* serialize IOs */
976 bool submitted; /* indicate IO submission */
977 int need_lock; /* indicate we need to lock cp_rwsem */
978 bool in_list; /* indicate fio is in io_list */
979 enum iostat_type io_type; /* io type */
980 struct writeback_control *io_wbc; /* writeback control */
981 };
982
983 #define is_read_io(rw) ((rw) == READ)
984 struct f2fs_bio_info {
985 struct f2fs_sb_info *sbi; /* f2fs superblock */
986 struct bio *bio; /* bios to merge */
987 sector_t last_block_in_bio; /* last block number */
988 struct f2fs_io_info fio; /* store buffered io info. */
989 struct rw_semaphore io_rwsem; /* blocking op for bio */
990 spinlock_t io_lock; /* serialize DATA/NODE IOs */
991 struct list_head io_list; /* track fios */
992 };
993
994 #define FDEV(i) (sbi->devs[i])
995 #define RDEV(i) (raw_super->devs[i])
996 struct f2fs_dev_info {
997 struct block_device *bdev;
998 char path[MAX_PATH_LEN];
999 unsigned int total_segments;
1000 block_t start_blk;
1001 block_t end_blk;
1002 #ifdef CONFIG_BLK_DEV_ZONED
1003 unsigned int nr_blkz; /* Total number of zones */
1004 u8 *blkz_type; /* Array of zones type */
1005 #endif
1006 };
1007
1008 enum inode_type {
1009 DIR_INODE, /* for dirty dir inode */
1010 FILE_INODE, /* for dirty regular/symlink inode */
1011 DIRTY_META, /* for all dirtied inode metadata */
1012 ATOMIC_FILE, /* for all atomic files */
1013 NR_INODE_TYPE,
1014 };
1015
1016 /* for inner inode cache management */
1017 struct inode_management {
1018 struct radix_tree_root ino_root; /* ino entry array */
1019 spinlock_t ino_lock; /* for ino entry lock */
1020 struct list_head ino_list; /* inode list head */
1021 unsigned long ino_num; /* number of entries */
1022 };
1023
1024 /* For s_flag in struct f2fs_sb_info */
1025 enum {
1026 SBI_IS_DIRTY, /* dirty flag for checkpoint */
1027 SBI_IS_CLOSE, /* specify unmounting */
1028 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
1029 SBI_POR_DOING, /* recovery is doing or not */
1030 SBI_NEED_SB_WRITE, /* need to recover superblock */
1031 SBI_NEED_CP, /* need to checkpoint */
1032 };
1033
1034 enum {
1035 CP_TIME,
1036 REQ_TIME,
1037 MAX_TIME,
1038 };
1039
1040 struct f2fs_sb_info {
1041 struct super_block *sb; /* pointer to VFS super block */
1042 struct proc_dir_entry *s_proc; /* proc entry */
1043 struct f2fs_super_block *raw_super; /* raw super block pointer */
1044 int valid_super_block; /* valid super block no */
1045 unsigned long s_flag; /* flags for sbi */
1046
1047 #ifdef CONFIG_BLK_DEV_ZONED
1048 unsigned int blocks_per_blkz; /* F2FS blocks per zone */
1049 unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
1050 #endif
1051
1052 /* for node-related operations */
1053 struct f2fs_nm_info *nm_info; /* node manager */
1054 struct inode *node_inode; /* cache node blocks */
1055
1056 /* for segment-related operations */
1057 struct f2fs_sm_info *sm_info; /* segment manager */
1058
1059 /* for bio operations */
1060 struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */
1061 struct mutex wio_mutex[NR_PAGE_TYPE - 1][NR_TEMP_TYPE];
1062 /* bio ordering for NODE/DATA */
1063 int write_io_size_bits; /* Write IO size bits */
1064 mempool_t *write_io_dummy; /* Dummy pages */
1065
1066 /* for checkpoint */
1067 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
1068 int cur_cp_pack; /* remain current cp pack */
1069 spinlock_t cp_lock; /* for flag in ckpt */
1070 struct inode *meta_inode; /* cache meta blocks */
1071 struct mutex cp_mutex; /* checkpoint procedure lock */
1072 struct rw_semaphore cp_rwsem; /* blocking FS operations */
1073 struct rw_semaphore node_write; /* locking node writes */
1074 struct rw_semaphore node_change; /* locking node change */
1075 wait_queue_head_t cp_wait;
1076 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
1077 long interval_time[MAX_TIME]; /* to store thresholds */
1078
1079 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
1080
1081 /* for orphan inode, use 0'th array */
1082 unsigned int max_orphans; /* max orphan inodes */
1083
1084 /* for inode management */
1085 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
1086 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
1087
1088 /* for extent tree cache */
1089 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
1090 struct mutex extent_tree_lock; /* locking extent radix tree */
1091 struct list_head extent_list; /* lru list for shrinker */
1092 spinlock_t extent_lock; /* locking extent lru list */
1093 atomic_t total_ext_tree; /* extent tree count */
1094 struct list_head zombie_list; /* extent zombie tree list */
1095 atomic_t total_zombie_tree; /* extent zombie tree count */
1096 atomic_t total_ext_node; /* extent info count */
1097
1098 /* basic filesystem units */
1099 unsigned int log_sectors_per_block; /* log2 sectors per block */
1100 unsigned int log_blocksize; /* log2 block size */
1101 unsigned int blocksize; /* block size */
1102 unsigned int root_ino_num; /* root inode number*/
1103 unsigned int node_ino_num; /* node inode number*/
1104 unsigned int meta_ino_num; /* meta inode number*/
1105 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
1106 unsigned int blocks_per_seg; /* blocks per segment */
1107 unsigned int segs_per_sec; /* segments per section */
1108 unsigned int secs_per_zone; /* sections per zone */
1109 unsigned int total_sections; /* total section count */
1110 unsigned int total_node_count; /* total node block count */
1111 unsigned int total_valid_node_count; /* valid node block count */
1112 loff_t max_file_blocks; /* max block index of file */
1113 int active_logs; /* # of active logs */
1114 int dir_level; /* directory level */
1115 int inline_xattr_size; /* inline xattr size */
1116 unsigned int trigger_ssr_threshold; /* threshold to trigger ssr */
1117 int readdir_ra; /* readahead inode in readdir */
1118
1119 block_t user_block_count; /* # of user blocks */
1120 block_t total_valid_block_count; /* # of valid blocks */
1121 block_t discard_blks; /* discard command candidats */
1122 block_t last_valid_block_count; /* for recovery */
1123 block_t reserved_blocks; /* configurable reserved blocks */
1124 block_t current_reserved_blocks; /* current reserved blocks */
1125 block_t root_reserved_blocks; /* root reserved blocks */
1126 kuid_t s_resuid; /* reserved blocks for uid */
1127 kgid_t s_resgid; /* reserved blocks for gid */
1128
1129 unsigned int nquota_files; /* # of quota sysfile */
1130
1131 u32 s_next_generation; /* for NFS support */
1132
1133 /* # of pages, see count_type */
1134 atomic_t nr_pages[NR_COUNT_TYPE];
1135 /* # of allocated blocks */
1136 struct percpu_counter alloc_valid_block_count;
1137
1138 /* writeback control */
1139 atomic_t wb_sync_req; /* count # of WB_SYNC threads */
1140
1141 /* valid inode count */
1142 struct percpu_counter total_valid_inode_count;
1143
1144 struct f2fs_mount_info mount_opt; /* mount options */
1145
1146 /* for cleaning operations */
1147 struct mutex gc_mutex; /* mutex for GC */
1148 struct f2fs_gc_kthread *gc_thread; /* GC thread */
1149 unsigned int cur_victim_sec; /* current victim section num */
1150
1151 /* threshold for converting bg victims for fg */
1152 u64 fggc_threshold;
1153
1154 /* threshold for gc trials on pinned files */
1155 u64 gc_pin_file_threshold;
1156
1157 /* maximum # of trials to find a victim segment for SSR and GC */
1158 unsigned int max_victim_search;
1159
1160 /*
1161 * for stat information.
1162 * one is for the LFS mode, and the other is for the SSR mode.
1163 */
1164 #ifdef CONFIG_F2FS_STAT_FS
1165 struct f2fs_stat_info *stat_info; /* FS status information */
1166 unsigned int segment_count[2]; /* # of allocated segments */
1167 unsigned int block_count[2]; /* # of allocated blocks */
1168 atomic_t inplace_count; /* # of inplace update */
1169 atomic64_t total_hit_ext; /* # of lookup extent cache */
1170 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
1171 atomic64_t read_hit_largest; /* # of hit largest extent node */
1172 atomic64_t read_hit_cached; /* # of hit cached extent node */
1173 atomic_t inline_xattr; /* # of inline_xattr inodes */
1174 atomic_t inline_inode; /* # of inline_data inodes */
1175 atomic_t inline_dir; /* # of inline_dentry inodes */
1176 atomic_t aw_cnt; /* # of atomic writes */
1177 atomic_t vw_cnt; /* # of volatile writes */
1178 atomic_t max_aw_cnt; /* max # of atomic writes */
1179 atomic_t max_vw_cnt; /* max # of volatile writes */
1180 int bg_gc; /* background gc calls */
1181 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
1182 #endif
1183 spinlock_t stat_lock; /* lock for stat operations */
1184
1185 /* For app/fs IO statistics */
1186 spinlock_t iostat_lock;
1187 unsigned long long write_iostat[NR_IO_TYPE];
1188 bool iostat_enable;
1189
1190 /* For sysfs suppport */
1191 struct kobject s_kobj;
1192 struct completion s_kobj_unregister;
1193
1194 /* For shrinker support */
1195 struct list_head s_list;
1196 int s_ndevs; /* number of devices */
1197 struct f2fs_dev_info *devs; /* for device list */
1198 unsigned int dirty_device; /* for checkpoint data flush */
1199 spinlock_t dev_lock; /* protect dirty_device */
1200 struct mutex umount_mutex;
1201 unsigned int shrinker_run_no;
1202
1203 /* For write statistics */
1204 u64 sectors_written_start;
1205 u64 kbytes_written;
1206
1207 /* Reference to checksum algorithm driver via cryptoapi */
1208 struct crypto_shash *s_chksum_driver;
1209
1210 /* Precomputed FS UUID checksum for seeding other checksums */
1211 __u32 s_chksum_seed;
1212
1213 /* For fault injection */
1214 #ifdef CONFIG_F2FS_FAULT_INJECTION
1215 struct f2fs_fault_info fault_info;
1216 #endif
1217
1218 #ifdef CONFIG_QUOTA
1219 /* Names of quota files with journalled quota */
1220 char *s_qf_names[MAXQUOTAS];
1221 int s_jquota_fmt; /* Format of quota to use */
1222 #endif
1223 };
1224
1225 #ifdef CONFIG_F2FS_FAULT_INJECTION
1226 #define f2fs_show_injection_info(type) \
1227 printk("%sF2FS-fs : inject %s in %s of %pF\n", \
1228 KERN_INFO, fault_name[type], \
1229 __func__, __builtin_return_address(0))
1230 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1231 {
1232 struct f2fs_fault_info *ffi = &sbi->fault_info;
1233
1234 if (!ffi->inject_rate)
1235 return false;
1236
1237 if (!IS_FAULT_SET(ffi, type))
1238 return false;
1239
1240 atomic_inc(&ffi->inject_ops);
1241 if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
1242 atomic_set(&ffi->inject_ops, 0);
1243 return true;
1244 }
1245 return false;
1246 }
1247 #endif
1248
1249 /* For write statistics. Suppose sector size is 512 bytes,
1250 * and the return value is in kbytes. s is of struct f2fs_sb_info.
1251 */
1252 #define BD_PART_WRITTEN(s) \
1253 (((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[1]) - \
1254 (s)->sectors_written_start) >> 1)
1255
1256 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
1257 {
1258 sbi->last_time[type] = jiffies;
1259 }
1260
1261 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
1262 {
1263 unsigned long interval = sbi->interval_time[type] * HZ;
1264
1265 return time_after(jiffies, sbi->last_time[type] + interval);
1266 }
1267
1268 static inline bool is_idle(struct f2fs_sb_info *sbi)
1269 {
1270 struct block_device *bdev = sbi->sb->s_bdev;
1271 struct request_queue *q = bdev_get_queue(bdev);
1272 struct request_list *rl = &q->root_rl;
1273
1274 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
1275 return 0;
1276
1277 return f2fs_time_over(sbi, REQ_TIME);
1278 }
1279
1280 /*
1281 * Inline functions
1282 */
1283 static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc,
1284 const void *address, unsigned int length)
1285 {
1286 struct {
1287 struct shash_desc shash;
1288 char ctx[4];
1289 } desc;
1290 int err;
1291
1292 BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx));
1293
1294 desc.shash.tfm = sbi->s_chksum_driver;
1295 desc.shash.flags = 0;
1296 *(u32 *)desc.ctx = crc;
1297
1298 err = crypto_shash_update(&desc.shash, address, length);
1299 BUG_ON(err);
1300
1301 return *(u32 *)desc.ctx;
1302 }
1303
1304 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
1305 unsigned int length)
1306 {
1307 return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length);
1308 }
1309
1310 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
1311 void *buf, size_t buf_size)
1312 {
1313 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
1314 }
1315
1316 static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc,
1317 const void *address, unsigned int length)
1318 {
1319 return __f2fs_crc32(sbi, crc, address, length);
1320 }
1321
1322 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
1323 {
1324 return container_of(inode, struct f2fs_inode_info, vfs_inode);
1325 }
1326
1327 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
1328 {
1329 return sb->s_fs_info;
1330 }
1331
1332 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
1333 {
1334 return F2FS_SB(inode->i_sb);
1335 }
1336
1337 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
1338 {
1339 return F2FS_I_SB(mapping->host);
1340 }
1341
1342 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
1343 {
1344 return F2FS_M_SB(page->mapping);
1345 }
1346
1347 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
1348 {
1349 return (struct f2fs_super_block *)(sbi->raw_super);
1350 }
1351
1352 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1353 {
1354 return (struct f2fs_checkpoint *)(sbi->ckpt);
1355 }
1356
1357 static inline struct f2fs_node *F2FS_NODE(struct page *page)
1358 {
1359 return (struct f2fs_node *)page_address(page);
1360 }
1361
1362 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1363 {
1364 return &((struct f2fs_node *)page_address(page))->i;
1365 }
1366
1367 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1368 {
1369 return (struct f2fs_nm_info *)(sbi->nm_info);
1370 }
1371
1372 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1373 {
1374 return (struct f2fs_sm_info *)(sbi->sm_info);
1375 }
1376
1377 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1378 {
1379 return (struct sit_info *)(SM_I(sbi)->sit_info);
1380 }
1381
1382 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1383 {
1384 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1385 }
1386
1387 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1388 {
1389 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1390 }
1391
1392 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1393 {
1394 return sbi->meta_inode->i_mapping;
1395 }
1396
1397 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1398 {
1399 return sbi->node_inode->i_mapping;
1400 }
1401
1402 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1403 {
1404 return test_bit(type, &sbi->s_flag);
1405 }
1406
1407 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1408 {
1409 set_bit(type, &sbi->s_flag);
1410 }
1411
1412 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1413 {
1414 clear_bit(type, &sbi->s_flag);
1415 }
1416
1417 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1418 {
1419 return le64_to_cpu(cp->checkpoint_ver);
1420 }
1421
1422 static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type)
1423 {
1424 if (type < F2FS_MAX_QUOTAS)
1425 return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]);
1426 return 0;
1427 }
1428
1429 static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
1430 {
1431 size_t crc_offset = le32_to_cpu(cp->checksum_offset);
1432 return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
1433 }
1434
1435 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1436 {
1437 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1438
1439 return ckpt_flags & f;
1440 }
1441
1442 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1443 {
1444 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1445 }
1446
1447 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1448 {
1449 unsigned int ckpt_flags;
1450
1451 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1452 ckpt_flags |= f;
1453 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1454 }
1455
1456 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1457 {
1458 unsigned long flags;
1459
1460 spin_lock_irqsave(&sbi->cp_lock, flags);
1461 __set_ckpt_flags(F2FS_CKPT(sbi), f);
1462 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1463 }
1464
1465 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1466 {
1467 unsigned int ckpt_flags;
1468
1469 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1470 ckpt_flags &= (~f);
1471 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1472 }
1473
1474 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1475 {
1476 unsigned long flags;
1477
1478 spin_lock_irqsave(&sbi->cp_lock, flags);
1479 __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1480 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1481 }
1482
1483 static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
1484 {
1485 unsigned long flags;
1486
1487 set_sbi_flag(sbi, SBI_NEED_FSCK);
1488
1489 if (lock)
1490 spin_lock_irqsave(&sbi->cp_lock, flags);
1491 __clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
1492 kfree(NM_I(sbi)->nat_bits);
1493 NM_I(sbi)->nat_bits = NULL;
1494 if (lock)
1495 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1496 }
1497
1498 static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
1499 struct cp_control *cpc)
1500 {
1501 bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1502
1503 return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1504 }
1505
1506 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1507 {
1508 down_read(&sbi->cp_rwsem);
1509 }
1510
1511 static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
1512 {
1513 return down_read_trylock(&sbi->cp_rwsem);
1514 }
1515
1516 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1517 {
1518 up_read(&sbi->cp_rwsem);
1519 }
1520
1521 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1522 {
1523 down_write(&sbi->cp_rwsem);
1524 }
1525
1526 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1527 {
1528 up_write(&sbi->cp_rwsem);
1529 }
1530
1531 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1532 {
1533 int reason = CP_SYNC;
1534
1535 if (test_opt(sbi, FASTBOOT))
1536 reason = CP_FASTBOOT;
1537 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1538 reason = CP_UMOUNT;
1539 return reason;
1540 }
1541
1542 static inline bool __remain_node_summaries(int reason)
1543 {
1544 return (reason & (CP_UMOUNT | CP_FASTBOOT));
1545 }
1546
1547 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1548 {
1549 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1550 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1551 }
1552
1553 /*
1554 * Check whether the given nid is within node id range.
1555 */
1556 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1557 {
1558 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1559 return -EINVAL;
1560 if (unlikely(nid >= NM_I(sbi)->max_nid))
1561 return -EINVAL;
1562 return 0;
1563 }
1564
1565 /*
1566 * Check whether the inode has blocks or not
1567 */
1568 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1569 {
1570 block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
1571
1572 return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1573 }
1574
1575 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1576 {
1577 return ofs == XATTR_NODE_OFFSET;
1578 }
1579
1580 static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
1581 struct inode *inode)
1582 {
1583 if (!inode)
1584 return true;
1585 if (!test_opt(sbi, RESERVE_ROOT))
1586 return false;
1587 if (IS_NOQUOTA(inode))
1588 return true;
1589 if (capable(CAP_SYS_RESOURCE))
1590 return true;
1591 if (uid_eq(sbi->s_resuid, current_fsuid()))
1592 return true;
1593 if (!gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) &&
1594 in_group_p(sbi->s_resgid))
1595 return true;
1596 return false;
1597 }
1598
1599 static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
1600 static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
1601 struct inode *inode, blkcnt_t *count)
1602 {
1603 blkcnt_t diff = 0, release = 0;
1604 block_t avail_user_block_count;
1605 int ret;
1606
1607 ret = dquot_reserve_block(inode, *count);
1608 if (ret)
1609 return ret;
1610
1611 #ifdef CONFIG_F2FS_FAULT_INJECTION
1612 if (time_to_inject(sbi, FAULT_BLOCK)) {
1613 f2fs_show_injection_info(FAULT_BLOCK);
1614 release = *count;
1615 goto enospc;
1616 }
1617 #endif
1618 /*
1619 * let's increase this in prior to actual block count change in order
1620 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1621 */
1622 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1623
1624 spin_lock(&sbi->stat_lock);
1625 sbi->total_valid_block_count += (block_t)(*count);
1626 avail_user_block_count = sbi->user_block_count -
1627 sbi->current_reserved_blocks;
1628
1629 if (!__allow_reserved_blocks(sbi, inode))
1630 avail_user_block_count -= sbi->root_reserved_blocks;
1631
1632 if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
1633 diff = sbi->total_valid_block_count - avail_user_block_count;
1634 if (diff > *count)
1635 diff = *count;
1636 *count -= diff;
1637 release = diff;
1638 sbi->total_valid_block_count -= diff;
1639 if (!*count) {
1640 spin_unlock(&sbi->stat_lock);
1641 percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
1642 goto enospc;
1643 }
1644 }
1645 spin_unlock(&sbi->stat_lock);
1646
1647 if (unlikely(release))
1648 dquot_release_reservation_block(inode, release);
1649 f2fs_i_blocks_write(inode, *count, true, true);
1650 return 0;
1651
1652 enospc:
1653 dquot_release_reservation_block(inode, release);
1654 return -ENOSPC;
1655 }
1656
1657 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1658 struct inode *inode,
1659 block_t count)
1660 {
1661 blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;
1662
1663 spin_lock(&sbi->stat_lock);
1664 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1665 f2fs_bug_on(sbi, inode->i_blocks < sectors);
1666 sbi->total_valid_block_count -= (block_t)count;
1667 if (sbi->reserved_blocks &&
1668 sbi->current_reserved_blocks < sbi->reserved_blocks)
1669 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
1670 sbi->current_reserved_blocks + count);
1671 spin_unlock(&sbi->stat_lock);
1672 f2fs_i_blocks_write(inode, count, false, true);
1673 }
1674
1675 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1676 {
1677 atomic_inc(&sbi->nr_pages[count_type]);
1678
1679 if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES ||
1680 count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA)
1681 return;
1682
1683 set_sbi_flag(sbi, SBI_IS_DIRTY);
1684 }
1685
1686 static inline void inode_inc_dirty_pages(struct inode *inode)
1687 {
1688 atomic_inc(&F2FS_I(inode)->dirty_pages);
1689 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1690 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1691 if (IS_NOQUOTA(inode))
1692 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1693 }
1694
1695 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1696 {
1697 atomic_dec(&sbi->nr_pages[count_type]);
1698 }
1699
1700 static inline void inode_dec_dirty_pages(struct inode *inode)
1701 {
1702 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1703 !S_ISLNK(inode->i_mode))
1704 return;
1705
1706 atomic_dec(&F2FS_I(inode)->dirty_pages);
1707 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1708 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1709 if (IS_NOQUOTA(inode))
1710 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1711 }
1712
1713 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1714 {
1715 return atomic_read(&sbi->nr_pages[count_type]);
1716 }
1717
1718 static inline int get_dirty_pages(struct inode *inode)
1719 {
1720 return atomic_read(&F2FS_I(inode)->dirty_pages);
1721 }
1722
1723 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1724 {
1725 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1726 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1727 sbi->log_blocks_per_seg;
1728
1729 return segs / sbi->segs_per_sec;
1730 }
1731
1732 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1733 {
1734 return sbi->total_valid_block_count;
1735 }
1736
1737 static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
1738 {
1739 return sbi->discard_blks;
1740 }
1741
1742 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1743 {
1744 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1745
1746 /* return NAT or SIT bitmap */
1747 if (flag == NAT_BITMAP)
1748 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1749 else if (flag == SIT_BITMAP)
1750 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1751
1752 return 0;
1753 }
1754
1755 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1756 {
1757 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1758 }
1759
1760 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1761 {
1762 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1763 int offset;
1764
1765 if (__cp_payload(sbi) > 0) {
1766 if (flag == NAT_BITMAP)
1767 return &ckpt->sit_nat_version_bitmap;
1768 else
1769 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1770 } else {
1771 offset = (flag == NAT_BITMAP) ?
1772 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1773 return &ckpt->sit_nat_version_bitmap + offset;
1774 }
1775 }
1776
1777 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1778 {
1779 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1780
1781 if (sbi->cur_cp_pack == 2)
1782 start_addr += sbi->blocks_per_seg;
1783 return start_addr;
1784 }
1785
1786 static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
1787 {
1788 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1789
1790 if (sbi->cur_cp_pack == 1)
1791 start_addr += sbi->blocks_per_seg;
1792 return start_addr;
1793 }
1794
1795 static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
1796 {
1797 sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
1798 }
1799
1800 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1801 {
1802 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1803 }
1804
1805 static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
1806 struct inode *inode, bool is_inode)
1807 {
1808 block_t valid_block_count;
1809 unsigned int valid_node_count;
1810 bool quota = inode && !is_inode;
1811
1812 if (quota) {
1813 int ret = dquot_reserve_block(inode, 1);
1814 if (ret)
1815 return ret;
1816 }
1817
1818 #ifdef CONFIG_F2FS_FAULT_INJECTION
1819 if (time_to_inject(sbi, FAULT_BLOCK)) {
1820 f2fs_show_injection_info(FAULT_BLOCK);
1821 goto enospc;
1822 }
1823 #endif
1824
1825 spin_lock(&sbi->stat_lock);
1826
1827 valid_block_count = sbi->total_valid_block_count +
1828 sbi->current_reserved_blocks + 1;
1829
1830 if (!__allow_reserved_blocks(sbi, inode))
1831 valid_block_count += sbi->root_reserved_blocks;
1832
1833 if (unlikely(valid_block_count > sbi->user_block_count)) {
1834 spin_unlock(&sbi->stat_lock);
1835 goto enospc;
1836 }
1837
1838 valid_node_count = sbi->total_valid_node_count + 1;
1839 if (unlikely(valid_node_count > sbi->total_node_count)) {
1840 spin_unlock(&sbi->stat_lock);
1841 goto enospc;
1842 }
1843
1844 sbi->total_valid_node_count++;
1845 sbi->total_valid_block_count++;
1846 spin_unlock(&sbi->stat_lock);
1847
1848 if (inode) {
1849 if (is_inode)
1850 f2fs_mark_inode_dirty_sync(inode, true);
1851 else
1852 f2fs_i_blocks_write(inode, 1, true, true);
1853 }
1854
1855 percpu_counter_inc(&sbi->alloc_valid_block_count);
1856 return 0;
1857
1858 enospc:
1859 if (quota)
1860 dquot_release_reservation_block(inode, 1);
1861 return -ENOSPC;
1862 }
1863
1864 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1865 struct inode *inode, bool is_inode)
1866 {
1867 spin_lock(&sbi->stat_lock);
1868
1869 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1870 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1871 f2fs_bug_on(sbi, !is_inode && !inode->i_blocks);
1872
1873 sbi->total_valid_node_count--;
1874 sbi->total_valid_block_count--;
1875 if (sbi->reserved_blocks &&
1876 sbi->current_reserved_blocks < sbi->reserved_blocks)
1877 sbi->current_reserved_blocks++;
1878
1879 spin_unlock(&sbi->stat_lock);
1880
1881 if (!is_inode)
1882 f2fs_i_blocks_write(inode, 1, false, true);
1883 }
1884
1885 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1886 {
1887 return sbi->total_valid_node_count;
1888 }
1889
1890 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1891 {
1892 percpu_counter_inc(&sbi->total_valid_inode_count);
1893 }
1894
1895 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1896 {
1897 percpu_counter_dec(&sbi->total_valid_inode_count);
1898 }
1899
1900 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1901 {
1902 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1903 }
1904
1905 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1906 pgoff_t index, bool for_write)
1907 {
1908 #ifdef CONFIG_F2FS_FAULT_INJECTION
1909 struct page *page = find_lock_page(mapping, index);
1910
1911 if (page)
1912 return page;
1913
1914 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
1915 f2fs_show_injection_info(FAULT_PAGE_ALLOC);
1916 return NULL;
1917 }
1918 #endif
1919 if (!for_write)
1920 return grab_cache_page(mapping, index);
1921 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1922 }
1923
1924 static inline struct page *f2fs_pagecache_get_page(
1925 struct address_space *mapping, pgoff_t index,
1926 int fgp_flags, gfp_t gfp_mask)
1927 {
1928 #ifdef CONFIG_F2FS_FAULT_INJECTION
1929 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
1930 f2fs_show_injection_info(FAULT_PAGE_GET);
1931 return NULL;
1932 }
1933 #endif
1934 return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
1935 }
1936
1937 static inline void f2fs_copy_page(struct page *src, struct page *dst)
1938 {
1939 char *src_kaddr = kmap(src);
1940 char *dst_kaddr = kmap(dst);
1941
1942 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1943 kunmap(dst);
1944 kunmap(src);
1945 }
1946
1947 static inline void f2fs_put_page(struct page *page, int unlock)
1948 {
1949 if (!page)
1950 return;
1951
1952 if (unlock) {
1953 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1954 unlock_page(page);
1955 }
1956 put_page(page);
1957 }
1958
1959 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1960 {
1961 if (dn->node_page)
1962 f2fs_put_page(dn->node_page, 1);
1963 if (dn->inode_page && dn->node_page != dn->inode_page)
1964 f2fs_put_page(dn->inode_page, 0);
1965 dn->node_page = NULL;
1966 dn->inode_page = NULL;
1967 }
1968
1969 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1970 size_t size)
1971 {
1972 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1973 }
1974
1975 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1976 gfp_t flags)
1977 {
1978 void *entry;
1979
1980 entry = kmem_cache_alloc(cachep, flags);
1981 if (!entry)
1982 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1983 return entry;
1984 }
1985
1986 static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi,
1987 int npages, bool no_fail)
1988 {
1989 struct bio *bio;
1990
1991 if (no_fail) {
1992 /* No failure on bio allocation */
1993 bio = bio_alloc(GFP_NOIO, npages);
1994 if (!bio)
1995 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
1996 return bio;
1997 }
1998 #ifdef CONFIG_F2FS_FAULT_INJECTION
1999 if (time_to_inject(sbi, FAULT_ALLOC_BIO)) {
2000 f2fs_show_injection_info(FAULT_ALLOC_BIO);
2001 return NULL;
2002 }
2003 #endif
2004 return bio_alloc(GFP_KERNEL, npages);
2005 }
2006
2007 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
2008 unsigned long index, void *item)
2009 {
2010 while (radix_tree_insert(root, index, item))
2011 cond_resched();
2012 }
2013
2014 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
2015
2016 static inline bool IS_INODE(struct page *page)
2017 {
2018 struct f2fs_node *p = F2FS_NODE(page);
2019
2020 return RAW_IS_INODE(p);
2021 }
2022
2023 static inline int offset_in_addr(struct f2fs_inode *i)
2024 {
2025 return (i->i_inline & F2FS_EXTRA_ATTR) ?
2026 (le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0;
2027 }
2028
2029 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
2030 {
2031 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
2032 }
2033
2034 static inline int f2fs_has_extra_attr(struct inode *inode);
2035 static inline block_t datablock_addr(struct inode *inode,
2036 struct page *node_page, unsigned int offset)
2037 {
2038 struct f2fs_node *raw_node;
2039 __le32 *addr_array;
2040 int base = 0;
2041 bool is_inode = IS_INODE(node_page);
2042
2043 raw_node = F2FS_NODE(node_page);
2044
2045 /* from GC path only */
2046 if (is_inode) {
2047 if (!inode)
2048 base = offset_in_addr(&raw_node->i);
2049 else if (f2fs_has_extra_attr(inode))
2050 base = get_extra_isize(inode);
2051 }
2052
2053 addr_array = blkaddr_in_node(raw_node);
2054 return le32_to_cpu(addr_array[base + offset]);
2055 }
2056
2057 static inline int f2fs_test_bit(unsigned int nr, char *addr)
2058 {
2059 int mask;
2060
2061 addr += (nr >> 3);
2062 mask = 1 << (7 - (nr & 0x07));
2063 return mask & *addr;
2064 }
2065
2066 static inline void f2fs_set_bit(unsigned int nr, char *addr)
2067 {
2068 int mask;
2069
2070 addr += (nr >> 3);
2071 mask = 1 << (7 - (nr & 0x07));
2072 *addr |= mask;
2073 }
2074
2075 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
2076 {
2077 int mask;
2078
2079 addr += (nr >> 3);
2080 mask = 1 << (7 - (nr & 0x07));
2081 *addr &= ~mask;
2082 }
2083
2084 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
2085 {
2086 int mask;
2087 int ret;
2088
2089 addr += (nr >> 3);
2090 mask = 1 << (7 - (nr & 0x07));
2091 ret = mask & *addr;
2092 *addr |= mask;
2093 return ret;
2094 }
2095
2096 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
2097 {
2098 int mask;
2099 int ret;
2100
2101 addr += (nr >> 3);
2102 mask = 1 << (7 - (nr & 0x07));
2103 ret = mask & *addr;
2104 *addr &= ~mask;
2105 return ret;
2106 }
2107
2108 static inline void f2fs_change_bit(unsigned int nr, char *addr)
2109 {
2110 int mask;
2111
2112 addr += (nr >> 3);
2113 mask = 1 << (7 - (nr & 0x07));
2114 *addr ^= mask;
2115 }
2116
2117 #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
2118 #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL)
2119 #define F2FS_FL_INHERITED (FS_PROJINHERIT_FL)
2120
2121 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
2122 {
2123 if (S_ISDIR(mode))
2124 return flags;
2125 else if (S_ISREG(mode))
2126 return flags & F2FS_REG_FLMASK;
2127 else
2128 return flags & F2FS_OTHER_FLMASK;
2129 }
2130
2131 /* used for f2fs_inode_info->flags */
2132 enum {
2133 FI_NEW_INODE, /* indicate newly allocated inode */
2134 FI_DIRTY_INODE, /* indicate inode is dirty or not */
2135 FI_AUTO_RECOVER, /* indicate inode is recoverable */
2136 FI_DIRTY_DIR, /* indicate directory has dirty pages */
2137 FI_INC_LINK, /* need to increment i_nlink */
2138 FI_ACL_MODE, /* indicate acl mode */
2139 FI_NO_ALLOC, /* should not allocate any blocks */
2140 FI_FREE_NID, /* free allocated nide */
2141 FI_NO_EXTENT, /* not to use the extent cache */
2142 FI_INLINE_XATTR, /* used for inline xattr */
2143 FI_INLINE_DATA, /* used for inline data*/
2144 FI_INLINE_DENTRY, /* used for inline dentry */
2145 FI_APPEND_WRITE, /* inode has appended data */
2146 FI_UPDATE_WRITE, /* inode has in-place-update data */
2147 FI_NEED_IPU, /* used for ipu per file */
2148 FI_ATOMIC_FILE, /* indicate atomic file */
2149 FI_ATOMIC_COMMIT, /* indicate the state of atomical committing */
2150 FI_VOLATILE_FILE, /* indicate volatile file */
2151 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
2152 FI_DROP_CACHE, /* drop dirty page cache */
2153 FI_DATA_EXIST, /* indicate data exists */
2154 FI_INLINE_DOTS, /* indicate inline dot dentries */
2155 FI_DO_DEFRAG, /* indicate defragment is running */
2156 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
2157 FI_NO_PREALLOC, /* indicate skipped preallocated blocks */
2158 FI_HOT_DATA, /* indicate file is hot */
2159 FI_EXTRA_ATTR, /* indicate file has extra attribute */
2160 FI_PROJ_INHERIT, /* indicate file inherits projectid */
2161 FI_PIN_FILE, /* indicate file should not be gced */
2162 };
2163
2164 static inline void __mark_inode_dirty_flag(struct inode *inode,
2165 int flag, bool set)
2166 {
2167 switch (flag) {
2168 case FI_INLINE_XATTR:
2169 case FI_INLINE_DATA:
2170 case FI_INLINE_DENTRY:
2171 case FI_NEW_INODE:
2172 if (set)
2173 return;
2174 case FI_DATA_EXIST:
2175 case FI_INLINE_DOTS:
2176 case FI_PIN_FILE:
2177 f2fs_mark_inode_dirty_sync(inode, true);
2178 }
2179 }
2180
2181 static inline void set_inode_flag(struct inode *inode, int flag)
2182 {
2183 if (!test_bit(flag, &F2FS_I(inode)->flags))
2184 set_bit(flag, &F2FS_I(inode)->flags);
2185 __mark_inode_dirty_flag(inode, flag, true);
2186 }
2187
2188 static inline int is_inode_flag_set(struct inode *inode, int flag)
2189 {
2190 return test_bit(flag, &F2FS_I(inode)->flags);
2191 }
2192
2193 static inline void clear_inode_flag(struct inode *inode, int flag)
2194 {
2195 if (test_bit(flag, &F2FS_I(inode)->flags))
2196 clear_bit(flag, &F2FS_I(inode)->flags);
2197 __mark_inode_dirty_flag(inode, flag, false);
2198 }
2199
2200 static inline void set_acl_inode(struct inode *inode, umode_t mode)
2201 {
2202 F2FS_I(inode)->i_acl_mode = mode;
2203 set_inode_flag(inode, FI_ACL_MODE);
2204 f2fs_mark_inode_dirty_sync(inode, false);
2205 }
2206
2207 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
2208 {
2209 if (inc)
2210 inc_nlink(inode);
2211 else
2212 drop_nlink(inode);
2213 f2fs_mark_inode_dirty_sync(inode, true);
2214 }
2215
2216 static inline void f2fs_i_blocks_write(struct inode *inode,
2217 block_t diff, bool add, bool claim)
2218 {
2219 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2220 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2221
2222 /* add = 1, claim = 1 should be dquot_reserve_block in pair */
2223 if (add) {
2224 if (claim)
2225 dquot_claim_block(inode, diff);
2226 else
2227 dquot_alloc_block_nofail(inode, diff);
2228 } else {
2229 dquot_free_block(inode, diff);
2230 }
2231
2232 f2fs_mark_inode_dirty_sync(inode, true);
2233 if (clean || recover)
2234 set_inode_flag(inode, FI_AUTO_RECOVER);
2235 }
2236
2237 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
2238 {
2239 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2240 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2241
2242 if (i_size_read(inode) == i_size)
2243 return;
2244
2245 i_size_write(inode, i_size);
2246 f2fs_mark_inode_dirty_sync(inode, true);
2247 if (clean || recover)
2248 set_inode_flag(inode, FI_AUTO_RECOVER);
2249 }
2250
2251 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
2252 {
2253 F2FS_I(inode)->i_current_depth = depth;
2254 f2fs_mark_inode_dirty_sync(inode, true);
2255 }
2256
2257 static inline void f2fs_i_gc_failures_write(struct inode *inode,
2258 unsigned int count)
2259 {
2260 F2FS_I(inode)->i_gc_failures = count;
2261 f2fs_mark_inode_dirty_sync(inode, true);
2262 }
2263
2264 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
2265 {
2266 F2FS_I(inode)->i_xattr_nid = xnid;
2267 f2fs_mark_inode_dirty_sync(inode, true);
2268 }
2269
2270 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
2271 {
2272 F2FS_I(inode)->i_pino = pino;
2273 f2fs_mark_inode_dirty_sync(inode, true);
2274 }
2275
2276 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
2277 {
2278 struct f2fs_inode_info *fi = F2FS_I(inode);
2279
2280 if (ri->i_inline & F2FS_INLINE_XATTR)
2281 set_bit(FI_INLINE_XATTR, &fi->flags);
2282 if (ri->i_inline & F2FS_INLINE_DATA)
2283 set_bit(FI_INLINE_DATA, &fi->flags);
2284 if (ri->i_inline & F2FS_INLINE_DENTRY)
2285 set_bit(FI_INLINE_DENTRY, &fi->flags);
2286 if (ri->i_inline & F2FS_DATA_EXIST)
2287 set_bit(FI_DATA_EXIST, &fi->flags);
2288 if (ri->i_inline & F2FS_INLINE_DOTS)
2289 set_bit(FI_INLINE_DOTS, &fi->flags);
2290 if (ri->i_inline & F2FS_EXTRA_ATTR)
2291 set_bit(FI_EXTRA_ATTR, &fi->flags);
2292 if (ri->i_inline & F2FS_PIN_FILE)
2293 set_bit(FI_PIN_FILE, &fi->flags);
2294 }
2295
2296 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
2297 {
2298 ri->i_inline = 0;
2299
2300 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
2301 ri->i_inline |= F2FS_INLINE_XATTR;
2302 if (is_inode_flag_set(inode, FI_INLINE_DATA))
2303 ri->i_inline |= F2FS_INLINE_DATA;
2304 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
2305 ri->i_inline |= F2FS_INLINE_DENTRY;
2306 if (is_inode_flag_set(inode, FI_DATA_EXIST))
2307 ri->i_inline |= F2FS_DATA_EXIST;
2308 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
2309 ri->i_inline |= F2FS_INLINE_DOTS;
2310 if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
2311 ri->i_inline |= F2FS_EXTRA_ATTR;
2312 if (is_inode_flag_set(inode, FI_PIN_FILE))
2313 ri->i_inline |= F2FS_PIN_FILE;
2314 }
2315
2316 static inline int f2fs_has_extra_attr(struct inode *inode)
2317 {
2318 return is_inode_flag_set(inode, FI_EXTRA_ATTR);
2319 }
2320
2321 static inline int f2fs_has_inline_xattr(struct inode *inode)
2322 {
2323 return is_inode_flag_set(inode, FI_INLINE_XATTR);
2324 }
2325
2326 static inline unsigned int addrs_per_inode(struct inode *inode)
2327 {
2328 return CUR_ADDRS_PER_INODE(inode) - get_inline_xattr_addrs(inode);
2329 }
2330
2331 static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
2332 {
2333 struct f2fs_inode *ri = F2FS_INODE(page);
2334
2335 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
2336 get_inline_xattr_addrs(inode)]);
2337 }
2338
2339 static inline int inline_xattr_size(struct inode *inode)
2340 {
2341 return get_inline_xattr_addrs(inode) * sizeof(__le32);
2342 }
2343
2344 static inline int f2fs_has_inline_data(struct inode *inode)
2345 {
2346 return is_inode_flag_set(inode, FI_INLINE_DATA);
2347 }
2348
2349 static inline int f2fs_exist_data(struct inode *inode)
2350 {
2351 return is_inode_flag_set(inode, FI_DATA_EXIST);
2352 }
2353
2354 static inline int f2fs_has_inline_dots(struct inode *inode)
2355 {
2356 return is_inode_flag_set(inode, FI_INLINE_DOTS);
2357 }
2358
2359 static inline bool f2fs_is_pinned_file(struct inode *inode)
2360 {
2361 return is_inode_flag_set(inode, FI_PIN_FILE);
2362 }
2363
2364 static inline bool f2fs_is_atomic_file(struct inode *inode)
2365 {
2366 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
2367 }
2368
2369 static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
2370 {
2371 return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
2372 }
2373
2374 static inline bool f2fs_is_volatile_file(struct inode *inode)
2375 {
2376 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2377 }
2378
2379 static inline bool f2fs_is_first_block_written(struct inode *inode)
2380 {
2381 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2382 }
2383
2384 static inline bool f2fs_is_drop_cache(struct inode *inode)
2385 {
2386 return is_inode_flag_set(inode, FI_DROP_CACHE);
2387 }
2388
2389 static inline void *inline_data_addr(struct inode *inode, struct page *page)
2390 {
2391 struct f2fs_inode *ri = F2FS_INODE(page);
2392 int extra_size = get_extra_isize(inode);
2393
2394 return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
2395 }
2396
2397 static inline int f2fs_has_inline_dentry(struct inode *inode)
2398 {
2399 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2400 }
2401
2402 static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
2403 {
2404 if (!f2fs_has_inline_dentry(dir))
2405 kunmap(page);
2406 }
2407
2408 static inline int is_file(struct inode *inode, int type)
2409 {
2410 return F2FS_I(inode)->i_advise & type;
2411 }
2412
2413 static inline void set_file(struct inode *inode, int type)
2414 {
2415 F2FS_I(inode)->i_advise |= type;
2416 f2fs_mark_inode_dirty_sync(inode, true);
2417 }
2418
2419 static inline void clear_file(struct inode *inode, int type)
2420 {
2421 F2FS_I(inode)->i_advise &= ~type;
2422 f2fs_mark_inode_dirty_sync(inode, true);
2423 }
2424
2425 static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
2426 {
2427 bool ret;
2428
2429 if (dsync) {
2430 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2431
2432 spin_lock(&sbi->inode_lock[DIRTY_META]);
2433 ret = list_empty(&F2FS_I(inode)->gdirty_list);
2434 spin_unlock(&sbi->inode_lock[DIRTY_META]);
2435 return ret;
2436 }
2437 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
2438 file_keep_isize(inode) ||
2439 i_size_read(inode) & PAGE_MASK)
2440 return false;
2441
2442 down_read(&F2FS_I(inode)->i_sem);
2443 ret = F2FS_I(inode)->last_disk_size == i_size_read(inode);
2444 up_read(&F2FS_I(inode)->i_sem);
2445
2446 return ret;
2447 }
2448
2449 static inline int f2fs_readonly(struct super_block *sb)
2450 {
2451 return sb->s_flags & SB_RDONLY;
2452 }
2453
2454 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
2455 {
2456 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2457 }
2458
2459 static inline bool is_dot_dotdot(const struct qstr *str)
2460 {
2461 if (str->len == 1 && str->name[0] == '.')
2462 return true;
2463
2464 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
2465 return true;
2466
2467 return false;
2468 }
2469
2470 static inline bool f2fs_may_extent_tree(struct inode *inode)
2471 {
2472 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
2473 is_inode_flag_set(inode, FI_NO_EXTENT))
2474 return false;
2475
2476 return S_ISREG(inode->i_mode);
2477 }
2478
2479 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
2480 size_t size, gfp_t flags)
2481 {
2482 #ifdef CONFIG_F2FS_FAULT_INJECTION
2483 if (time_to_inject(sbi, FAULT_KMALLOC)) {
2484 f2fs_show_injection_info(FAULT_KMALLOC);
2485 return NULL;
2486 }
2487 #endif
2488 return kmalloc(size, flags);
2489 }
2490
2491 static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
2492 size_t size, gfp_t flags)
2493 {
2494 return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
2495 }
2496
2497 static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi,
2498 size_t size, gfp_t flags)
2499 {
2500 #ifdef CONFIG_F2FS_FAULT_INJECTION
2501 if (time_to_inject(sbi, FAULT_KVMALLOC)) {
2502 f2fs_show_injection_info(FAULT_KVMALLOC);
2503 return NULL;
2504 }
2505 #endif
2506 return kvmalloc(size, flags);
2507 }
2508
2509 static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
2510 size_t size, gfp_t flags)
2511 {
2512 return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
2513 }
2514
2515 static inline int get_extra_isize(struct inode *inode)
2516 {
2517 return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
2518 }
2519
2520 static inline int get_inline_xattr_addrs(struct inode *inode)
2521 {
2522 return F2FS_I(inode)->i_inline_xattr_size;
2523 }
2524
2525 #define get_inode_mode(i) \
2526 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
2527 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
2528
2529 #define F2FS_TOTAL_EXTRA_ATTR_SIZE \
2530 (offsetof(struct f2fs_inode, i_extra_end) - \
2531 offsetof(struct f2fs_inode, i_extra_isize)) \
2532
2533 #define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr))
2534 #define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \
2535 ((offsetof(typeof(*f2fs_inode), field) + \
2536 sizeof((f2fs_inode)->field)) \
2537 <= (F2FS_OLD_ATTRIBUTE_SIZE + extra_isize)) \
2538
2539 static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
2540 {
2541 int i;
2542
2543 spin_lock(&sbi->iostat_lock);
2544 for (i = 0; i < NR_IO_TYPE; i++)
2545 sbi->write_iostat[i] = 0;
2546 spin_unlock(&sbi->iostat_lock);
2547 }
2548
2549 static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
2550 enum iostat_type type, unsigned long long io_bytes)
2551 {
2552 if (!sbi->iostat_enable)
2553 return;
2554 spin_lock(&sbi->iostat_lock);
2555 sbi->write_iostat[type] += io_bytes;
2556
2557 if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
2558 sbi->write_iostat[APP_BUFFERED_IO] =
2559 sbi->write_iostat[APP_WRITE_IO] -
2560 sbi->write_iostat[APP_DIRECT_IO];
2561 spin_unlock(&sbi->iostat_lock);
2562 }
2563
2564 /*
2565 * file.c
2566 */
2567 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
2568 void truncate_data_blocks(struct dnode_of_data *dn);
2569 int truncate_blocks(struct inode *inode, u64 from, bool lock);
2570 int f2fs_truncate(struct inode *inode);
2571 int f2fs_getattr(const struct path *path, struct kstat *stat,
2572 u32 request_mask, unsigned int flags);
2573 int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
2574 int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
2575 void truncate_data_blocks_range(struct dnode_of_data *dn, int count);
2576 int f2fs_precache_extents(struct inode *inode);
2577 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
2578 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
2579 int f2fs_pin_file_control(struct inode *inode, bool inc);
2580
2581 /*
2582 * inode.c
2583 */
2584 void f2fs_set_inode_flags(struct inode *inode);
2585 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page);
2586 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page);
2587 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
2588 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
2589 int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
2590 void update_inode(struct inode *inode, struct page *node_page);
2591 void update_inode_page(struct inode *inode);
2592 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
2593 void f2fs_evict_inode(struct inode *inode);
2594 void handle_failed_inode(struct inode *inode);
2595
2596 /*
2597 * namei.c
2598 */
2599 struct dentry *f2fs_get_parent(struct dentry *child);
2600
2601 /*
2602 * dir.c
2603 */
2604 void set_de_type(struct f2fs_dir_entry *de, umode_t mode);
2605 unsigned char get_de_type(struct f2fs_dir_entry *de);
2606 struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *fname,
2607 f2fs_hash_t namehash, int *max_slots,
2608 struct f2fs_dentry_ptr *d);
2609 int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
2610 unsigned int start_pos, struct fscrypt_str *fstr);
2611 void do_make_empty_dir(struct inode *inode, struct inode *parent,
2612 struct f2fs_dentry_ptr *d);
2613 struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
2614 const struct qstr *new_name,
2615 const struct qstr *orig_name, struct page *dpage);
2616 void update_parent_metadata(struct inode *dir, struct inode *inode,
2617 unsigned int current_depth);
2618 int room_for_filename(const void *bitmap, int slots, int max_slots);
2619 void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
2620 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
2621 struct fscrypt_name *fname, struct page **res_page);
2622 struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
2623 const struct qstr *child, struct page **res_page);
2624 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
2625 ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
2626 struct page **page);
2627 void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
2628 struct page *page, struct inode *inode);
2629 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
2630 const struct qstr *name, f2fs_hash_t name_hash,
2631 unsigned int bit_pos);
2632 int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
2633 const struct qstr *orig_name,
2634 struct inode *inode, nid_t ino, umode_t mode);
2635 int __f2fs_do_add_link(struct inode *dir, struct fscrypt_name *fname,
2636 struct inode *inode, nid_t ino, umode_t mode);
2637 int __f2fs_add_link(struct inode *dir, const struct qstr *name,
2638 struct inode *inode, nid_t ino, umode_t mode);
2639 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
2640 struct inode *dir, struct inode *inode);
2641 int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
2642 bool f2fs_empty_dir(struct inode *dir);
2643
2644 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
2645 {
2646 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
2647 inode, inode->i_ino, inode->i_mode);
2648 }
2649
2650 /*
2651 * super.c
2652 */
2653 int f2fs_inode_dirtied(struct inode *inode, bool sync);
2654 void f2fs_inode_synced(struct inode *inode);
2655 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
2656 void f2fs_quota_off_umount(struct super_block *sb);
2657 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
2658 int f2fs_sync_fs(struct super_block *sb, int sync);
2659 extern __printf(3, 4)
2660 void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...);
2661 int sanity_check_ckpt(struct f2fs_sb_info *sbi);
2662
2663 /*
2664 * hash.c
2665 */
2666 f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info,
2667 struct fscrypt_name *fname);
2668
2669 /*
2670 * node.c
2671 */
2672 struct dnode_of_data;
2673 struct node_info;
2674
2675 bool available_free_memory(struct f2fs_sb_info *sbi, int type);
2676 int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
2677 bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
2678 bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
2679 void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni);
2680 pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
2681 int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
2682 int truncate_inode_blocks(struct inode *inode, pgoff_t from);
2683 int truncate_xattr_node(struct inode *inode);
2684 int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino);
2685 int remove_inode_page(struct inode *inode);
2686 struct page *new_inode_page(struct inode *inode);
2687 struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs);
2688 void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
2689 struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
2690 struct page *get_node_page_ra(struct page *parent, int start);
2691 void move_node_page(struct page *node_page, int gc_type);
2692 int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
2693 struct writeback_control *wbc, bool atomic);
2694 int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc,
2695 bool do_balance, enum iostat_type io_type);
2696 void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
2697 bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
2698 void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
2699 void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
2700 int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
2701 void recover_inline_xattr(struct inode *inode, struct page *page);
2702 int recover_xattr_data(struct inode *inode, struct page *page);
2703 int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
2704 void restore_node_summary(struct f2fs_sb_info *sbi,
2705 unsigned int segno, struct f2fs_summary_block *sum);
2706 void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2707 int build_node_manager(struct f2fs_sb_info *sbi);
2708 void destroy_node_manager(struct f2fs_sb_info *sbi);
2709 int __init create_node_manager_caches(void);
2710 void destroy_node_manager_caches(void);
2711
2712 /*
2713 * segment.c
2714 */
2715 bool need_SSR(struct f2fs_sb_info *sbi);
2716 void register_inmem_page(struct inode *inode, struct page *page);
2717 void drop_inmem_pages_all(struct f2fs_sb_info *sbi);
2718 void drop_inmem_pages(struct inode *inode);
2719 void drop_inmem_page(struct inode *inode, struct page *page);
2720 int commit_inmem_pages(struct inode *inode);
2721 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
2722 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi);
2723 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
2724 int create_flush_cmd_control(struct f2fs_sb_info *sbi);
2725 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
2726 void destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
2727 void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
2728 bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
2729 void init_discard_policy(struct discard_policy *dpolicy, int discard_type,
2730 unsigned int granularity);
2731 void drop_discard_cmd(struct f2fs_sb_info *sbi);
2732 void stop_discard_thread(struct f2fs_sb_info *sbi);
2733 bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi);
2734 void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2735 void release_discard_addrs(struct f2fs_sb_info *sbi);
2736 int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
2737 void allocate_new_segments(struct f2fs_sb_info *sbi);
2738 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
2739 bool exist_trim_candidates(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2740 struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
2741 void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr);
2742 void write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
2743 enum iostat_type io_type);
2744 void write_node_page(unsigned int nid, struct f2fs_io_info *fio);
2745 void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio);
2746 int rewrite_data_page(struct f2fs_io_info *fio);
2747 void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
2748 block_t old_blkaddr, block_t new_blkaddr,
2749 bool recover_curseg, bool recover_newaddr);
2750 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
2751 block_t old_addr, block_t new_addr,
2752 unsigned char version, bool recover_curseg,
2753 bool recover_newaddr);
2754 void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
2755 block_t old_blkaddr, block_t *new_blkaddr,
2756 struct f2fs_summary *sum, int type,
2757 struct f2fs_io_info *fio, bool add_list);
2758 void f2fs_wait_on_page_writeback(struct page *page,
2759 enum page_type type, bool ordered);
2760 void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr);
2761 void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
2762 void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
2763 int lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
2764 unsigned int val, int alloc);
2765 void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2766 int build_segment_manager(struct f2fs_sb_info *sbi);
2767 void destroy_segment_manager(struct f2fs_sb_info *sbi);
2768 int __init create_segment_manager_caches(void);
2769 void destroy_segment_manager_caches(void);
2770 int rw_hint_to_seg_type(enum rw_hint hint);
2771
2772 /*
2773 * checkpoint.c
2774 */
2775 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
2776 struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
2777 struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
2778 struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
2779 bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type);
2780 int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
2781 int type, bool sync);
2782 void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
2783 long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
2784 long nr_to_write, enum iostat_type io_type);
2785 void add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
2786 void remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
2787 void release_ino_entry(struct f2fs_sb_info *sbi, bool all);
2788 bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
2789 void set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
2790 unsigned int devidx, int type);
2791 bool is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
2792 unsigned int devidx, int type);
2793 int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
2794 int acquire_orphan_inode(struct f2fs_sb_info *sbi);
2795 void release_orphan_inode(struct f2fs_sb_info *sbi);
2796 void add_orphan_inode(struct inode *inode);
2797 void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
2798 int recover_orphan_inodes(struct f2fs_sb_info *sbi);
2799 int get_valid_checkpoint(struct f2fs_sb_info *sbi);
2800 void update_dirty_page(struct inode *inode, struct page *page);
2801 void remove_dirty_inode(struct inode *inode);
2802 int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
2803 int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2804 void init_ino_entry_info(struct f2fs_sb_info *sbi);
2805 int __init create_checkpoint_caches(void);
2806 void destroy_checkpoint_caches(void);
2807
2808 /*
2809 * data.c
2810 */
2811 void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
2812 void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
2813 struct inode *inode, nid_t ino, pgoff_t idx,
2814 enum page_type type);
2815 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
2816 int f2fs_submit_page_bio(struct f2fs_io_info *fio);
2817 int f2fs_submit_page_write(struct f2fs_io_info *fio);
2818 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
2819 block_t blk_addr, struct bio *bio);
2820 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
2821 void set_data_blkaddr(struct dnode_of_data *dn);
2822 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
2823 int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
2824 int reserve_new_block(struct dnode_of_data *dn);
2825 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
2826 int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
2827 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
2828 struct page *get_read_data_page(struct inode *inode, pgoff_t index,
2829 int op_flags, bool for_write);
2830 struct page *find_data_page(struct inode *inode, pgoff_t index);
2831 struct page *get_lock_data_page(struct inode *inode, pgoff_t index,
2832 bool for_write);
2833 struct page *get_new_data_page(struct inode *inode,
2834 struct page *ipage, pgoff_t index, bool new_i_size);
2835 int do_write_data_page(struct f2fs_io_info *fio);
2836 int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
2837 int create, int flag);
2838 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
2839 u64 start, u64 len);
2840 bool should_update_inplace(struct inode *inode, struct f2fs_io_info *fio);
2841 bool should_update_outplace(struct inode *inode, struct f2fs_io_info *fio);
2842 void f2fs_set_page_dirty_nobuffers(struct page *page);
2843 int __f2fs_write_data_pages(struct address_space *mapping,
2844 struct writeback_control *wbc,
2845 enum iostat_type io_type);
2846 void f2fs_invalidate_page(struct page *page, unsigned int offset,
2847 unsigned int length);
2848 int f2fs_release_page(struct page *page, gfp_t wait);
2849 #ifdef CONFIG_MIGRATION
2850 int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
2851 struct page *page, enum migrate_mode mode);
2852 #endif
2853
2854 /*
2855 * gc.c
2856 */
2857 int start_gc_thread(struct f2fs_sb_info *sbi);
2858 void stop_gc_thread(struct f2fs_sb_info *sbi);
2859 block_t start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
2860 int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
2861 unsigned int segno);
2862 void build_gc_manager(struct f2fs_sb_info *sbi);
2863
2864 /*
2865 * recovery.c
2866 */
2867 int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
2868 bool space_for_roll_forward(struct f2fs_sb_info *sbi);
2869
2870 /*
2871 * debug.c
2872 */
2873 #ifdef CONFIG_F2FS_STAT_FS
2874 struct f2fs_stat_info {
2875 struct list_head stat_list;
2876 struct f2fs_sb_info *sbi;
2877 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2878 int main_area_segs, main_area_sections, main_area_zones;
2879 unsigned long long hit_largest, hit_cached, hit_rbtree;
2880 unsigned long long hit_total, total_ext;
2881 int ext_tree, zombie_tree, ext_node;
2882 int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
2883 int ndirty_data, ndirty_qdata;
2884 int inmem_pages;
2885 unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
2886 int nats, dirty_nats, sits, dirty_sits;
2887 int free_nids, avail_nids, alloc_nids;
2888 int total_count, utilization;
2889 int bg_gc, nr_wb_cp_data, nr_wb_data;
2890 int nr_flushing, nr_flushed, flush_list_empty;
2891 int nr_discarding, nr_discarded;
2892 int nr_discard_cmd;
2893 unsigned int undiscard_blks;
2894 int inline_xattr, inline_inode, inline_dir, append, update, orphans;
2895 int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
2896 unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
2897 unsigned int bimodal, avg_vblocks;
2898 int util_free, util_valid, util_invalid;
2899 int rsvd_segs, overp_segs;
2900 int dirty_count, node_pages, meta_pages;
2901 int prefree_count, call_count, cp_count, bg_cp_count;
2902 int tot_segs, node_segs, data_segs, free_segs, free_secs;
2903 int bg_node_segs, bg_data_segs;
2904 int tot_blks, data_blks, node_blks;
2905 int bg_data_blks, bg_node_blks;
2906 int curseg[NR_CURSEG_TYPE];
2907 int cursec[NR_CURSEG_TYPE];
2908 int curzone[NR_CURSEG_TYPE];
2909
2910 unsigned int segment_count[2];
2911 unsigned int block_count[2];
2912 unsigned int inplace_count;
2913 unsigned long long base_mem, cache_mem, page_mem;
2914 };
2915
2916 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2917 {
2918 return (struct f2fs_stat_info *)sbi->stat_info;
2919 }
2920
2921 #define stat_inc_cp_count(si) ((si)->cp_count++)
2922 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
2923 #define stat_inc_call_count(si) ((si)->call_count++)
2924 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
2925 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2926 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
2927 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2928 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2929 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2930 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
2931 #define stat_inc_inline_xattr(inode) \
2932 do { \
2933 if (f2fs_has_inline_xattr(inode)) \
2934 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2935 } while (0)
2936 #define stat_dec_inline_xattr(inode) \
2937 do { \
2938 if (f2fs_has_inline_xattr(inode)) \
2939 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2940 } while (0)
2941 #define stat_inc_inline_inode(inode) \
2942 do { \
2943 if (f2fs_has_inline_data(inode)) \
2944 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
2945 } while (0)
2946 #define stat_dec_inline_inode(inode) \
2947 do { \
2948 if (f2fs_has_inline_data(inode)) \
2949 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
2950 } while (0)
2951 #define stat_inc_inline_dir(inode) \
2952 do { \
2953 if (f2fs_has_inline_dentry(inode)) \
2954 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
2955 } while (0)
2956 #define stat_dec_inline_dir(inode) \
2957 do { \
2958 if (f2fs_has_inline_dentry(inode)) \
2959 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
2960 } while (0)
2961 #define stat_inc_seg_type(sbi, curseg) \
2962 ((sbi)->segment_count[(curseg)->alloc_type]++)
2963 #define stat_inc_block_count(sbi, curseg) \
2964 ((sbi)->block_count[(curseg)->alloc_type]++)
2965 #define stat_inc_inplace_blocks(sbi) \
2966 (atomic_inc(&(sbi)->inplace_count))
2967 #define stat_inc_atomic_write(inode) \
2968 (atomic_inc(&F2FS_I_SB(inode)->aw_cnt))
2969 #define stat_dec_atomic_write(inode) \
2970 (atomic_dec(&F2FS_I_SB(inode)->aw_cnt))
2971 #define stat_update_max_atomic_write(inode) \
2972 do { \
2973 int cur = atomic_read(&F2FS_I_SB(inode)->aw_cnt); \
2974 int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \
2975 if (cur > max) \
2976 atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
2977 } while (0)
2978 #define stat_inc_volatile_write(inode) \
2979 (atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
2980 #define stat_dec_volatile_write(inode) \
2981 (atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
2982 #define stat_update_max_volatile_write(inode) \
2983 do { \
2984 int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \
2985 int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \
2986 if (cur > max) \
2987 atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \
2988 } while (0)
2989 #define stat_inc_seg_count(sbi, type, gc_type) \
2990 do { \
2991 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
2992 si->tot_segs++; \
2993 if ((type) == SUM_TYPE_DATA) { \
2994 si->data_segs++; \
2995 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2996 } else { \
2997 si->node_segs++; \
2998 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2999 } \
3000 } while (0)
3001
3002 #define stat_inc_tot_blk_count(si, blks) \
3003 ((si)->tot_blks += (blks))
3004
3005 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
3006 do { \
3007 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3008 stat_inc_tot_blk_count(si, blks); \
3009 si->data_blks += (blks); \
3010 si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
3011 } while (0)
3012
3013 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
3014 do { \
3015 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3016 stat_inc_tot_blk_count(si, blks); \
3017 si->node_blks += (blks); \
3018 si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
3019 } while (0)
3020
3021 int f2fs_build_stats(struct f2fs_sb_info *sbi);
3022 void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
3023 int __init f2fs_create_root_stats(void);
3024 void f2fs_destroy_root_stats(void);
3025 #else
3026 #define stat_inc_cp_count(si) do { } while (0)
3027 #define stat_inc_bg_cp_count(si) do { } while (0)
3028 #define stat_inc_call_count(si) do { } while (0)
3029 #define stat_inc_bggc_count(si) do { } while (0)
3030 #define stat_inc_dirty_inode(sbi, type) do { } while (0)
3031 #define stat_dec_dirty_inode(sbi, type) do { } while (0)
3032 #define stat_inc_total_hit(sb) do { } while (0)
3033 #define stat_inc_rbtree_node_hit(sb) do { } while (0)
3034 #define stat_inc_largest_node_hit(sbi) do { } while (0)
3035 #define stat_inc_cached_node_hit(sbi) do { } while (0)
3036 #define stat_inc_inline_xattr(inode) do { } while (0)
3037 #define stat_dec_inline_xattr(inode) do { } while (0)
3038 #define stat_inc_inline_inode(inode) do { } while (0)
3039 #define stat_dec_inline_inode(inode) do { } while (0)
3040 #define stat_inc_inline_dir(inode) do { } while (0)
3041 #define stat_dec_inline_dir(inode) do { } while (0)
3042 #define stat_inc_atomic_write(inode) do { } while (0)
3043 #define stat_dec_atomic_write(inode) do { } while (0)
3044 #define stat_update_max_atomic_write(inode) do { } while (0)
3045 #define stat_inc_volatile_write(inode) do { } while (0)
3046 #define stat_dec_volatile_write(inode) do { } while (0)
3047 #define stat_update_max_volatile_write(inode) do { } while (0)
3048 #define stat_inc_seg_type(sbi, curseg) do { } while (0)
3049 #define stat_inc_block_count(sbi, curseg) do { } while (0)
3050 #define stat_inc_inplace_blocks(sbi) do { } while (0)
3051 #define stat_inc_seg_count(sbi, type, gc_type) do { } while (0)
3052 #define stat_inc_tot_blk_count(si, blks) do { } while (0)
3053 #define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0)
3054 #define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0)
3055
3056 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
3057 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
3058 static inline int __init f2fs_create_root_stats(void) { return 0; }
3059 static inline void f2fs_destroy_root_stats(void) { }
3060 #endif
3061
3062 extern const struct file_operations f2fs_dir_operations;
3063 extern const struct file_operations f2fs_file_operations;
3064 extern const struct inode_operations f2fs_file_inode_operations;
3065 extern const struct address_space_operations f2fs_dblock_aops;
3066 extern const struct address_space_operations f2fs_node_aops;
3067 extern const struct address_space_operations f2fs_meta_aops;
3068 extern const struct inode_operations f2fs_dir_inode_operations;
3069 extern const struct inode_operations f2fs_symlink_inode_operations;
3070 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
3071 extern const struct inode_operations f2fs_special_inode_operations;
3072 extern struct kmem_cache *inode_entry_slab;
3073
3074 /*
3075 * inline.c
3076 */
3077 bool f2fs_may_inline_data(struct inode *inode);
3078 bool f2fs_may_inline_dentry(struct inode *inode);
3079 void read_inline_data(struct page *page, struct page *ipage);
3080 void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from);
3081 int f2fs_read_inline_data(struct inode *inode, struct page *page);
3082 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
3083 int f2fs_convert_inline_inode(struct inode *inode);
3084 int f2fs_write_inline_data(struct inode *inode, struct page *page);
3085 bool recover_inline_data(struct inode *inode, struct page *npage);
3086 struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir,
3087 struct fscrypt_name *fname, struct page **res_page);
3088 int make_empty_inline_dir(struct inode *inode, struct inode *parent,
3089 struct page *ipage);
3090 int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
3091 const struct qstr *orig_name,
3092 struct inode *inode, nid_t ino, umode_t mode);
3093 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
3094 struct inode *dir, struct inode *inode);
3095 bool f2fs_empty_inline_dir(struct inode *dir);
3096 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
3097 struct fscrypt_str *fstr);
3098 int f2fs_inline_data_fiemap(struct inode *inode,
3099 struct fiemap_extent_info *fieinfo,
3100 __u64 start, __u64 len);
3101
3102 /*
3103 * shrinker.c
3104 */
3105 unsigned long f2fs_shrink_count(struct shrinker *shrink,
3106 struct shrink_control *sc);
3107 unsigned long f2fs_shrink_scan(struct shrinker *shrink,
3108 struct shrink_control *sc);
3109 void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
3110 void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
3111
3112 /*
3113 * extent_cache.c
3114 */
3115 struct rb_entry *__lookup_rb_tree(struct rb_root *root,
3116 struct rb_entry *cached_re, unsigned int ofs);
3117 struct rb_node **__lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
3118 struct rb_root *root, struct rb_node **parent,
3119 unsigned int ofs);
3120 struct rb_entry *__lookup_rb_tree_ret(struct rb_root *root,
3121 struct rb_entry *cached_re, unsigned int ofs,
3122 struct rb_entry **prev_entry, struct rb_entry **next_entry,
3123 struct rb_node ***insert_p, struct rb_node **insert_parent,
3124 bool force);
3125 bool __check_rb_tree_consistence(struct f2fs_sb_info *sbi,
3126 struct rb_root *root);
3127 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
3128 bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext);
3129 void f2fs_drop_extent_tree(struct inode *inode);
3130 unsigned int f2fs_destroy_extent_node(struct inode *inode);
3131 void f2fs_destroy_extent_tree(struct inode *inode);
3132 bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
3133 struct extent_info *ei);
3134 void f2fs_update_extent_cache(struct dnode_of_data *dn);
3135 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
3136 pgoff_t fofs, block_t blkaddr, unsigned int len);
3137 void init_extent_cache_info(struct f2fs_sb_info *sbi);
3138 int __init create_extent_cache(void);
3139 void destroy_extent_cache(void);
3140
3141 /*
3142 * sysfs.c
3143 */
3144 int __init f2fs_init_sysfs(void);
3145 void f2fs_exit_sysfs(void);
3146 int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
3147 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
3148
3149 /*
3150 * crypto support
3151 */
3152 static inline bool f2fs_encrypted_inode(struct inode *inode)
3153 {
3154 return file_is_encrypt(inode);
3155 }
3156
3157 static inline bool f2fs_encrypted_file(struct inode *inode)
3158 {
3159 return f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode);
3160 }
3161
3162 static inline void f2fs_set_encrypted_inode(struct inode *inode)
3163 {
3164 #ifdef CONFIG_F2FS_FS_ENCRYPTION
3165 file_set_encrypt(inode);
3166 inode->i_flags |= S_ENCRYPTED;
3167 #endif
3168 }
3169
3170 static inline bool f2fs_bio_encrypted(struct bio *bio)
3171 {
3172 return bio->bi_private != NULL;
3173 }
3174
3175 static inline int f2fs_sb_has_crypto(struct super_block *sb)
3176 {
3177 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
3178 }
3179
3180 static inline int f2fs_sb_mounted_blkzoned(struct super_block *sb)
3181 {
3182 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_BLKZONED);
3183 }
3184
3185 static inline int f2fs_sb_has_extra_attr(struct super_block *sb)
3186 {
3187 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_EXTRA_ATTR);
3188 }
3189
3190 static inline int f2fs_sb_has_project_quota(struct super_block *sb)
3191 {
3192 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_PRJQUOTA);
3193 }
3194
3195 static inline int f2fs_sb_has_inode_chksum(struct super_block *sb)
3196 {
3197 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_INODE_CHKSUM);
3198 }
3199
3200 static inline int f2fs_sb_has_flexible_inline_xattr(struct super_block *sb)
3201 {
3202 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);
3203 }
3204
3205 static inline int f2fs_sb_has_quota_ino(struct super_block *sb)
3206 {
3207 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_QUOTA_INO);
3208 }
3209
3210 static inline int f2fs_sb_has_inode_crtime(struct super_block *sb)
3211 {
3212 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_INODE_CRTIME);
3213 }
3214
3215 #ifdef CONFIG_BLK_DEV_ZONED
3216 static inline int get_blkz_type(struct f2fs_sb_info *sbi,
3217 struct block_device *bdev, block_t blkaddr)
3218 {
3219 unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
3220 int i;
3221
3222 for (i = 0; i < sbi->s_ndevs; i++)
3223 if (FDEV(i).bdev == bdev)
3224 return FDEV(i).blkz_type[zno];
3225 return -EINVAL;
3226 }
3227 #endif
3228
3229 static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
3230 {
3231 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
3232
3233 return blk_queue_discard(q) || f2fs_sb_mounted_blkzoned(sbi->sb);
3234 }
3235
3236 static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
3237 {
3238 clear_opt(sbi, ADAPTIVE);
3239 clear_opt(sbi, LFS);
3240
3241 switch (mt) {
3242 case F2FS_MOUNT_ADAPTIVE:
3243 set_opt(sbi, ADAPTIVE);
3244 break;
3245 case F2FS_MOUNT_LFS:
3246 set_opt(sbi, LFS);
3247 break;
3248 }
3249 }
3250
3251 static inline bool f2fs_may_encrypt(struct inode *inode)
3252 {
3253 #ifdef CONFIG_F2FS_FS_ENCRYPTION
3254 umode_t mode = inode->i_mode;
3255
3256 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
3257 #else
3258 return 0;
3259 #endif
3260 }
3261
3262 #endif
CRIS linux kernel tree