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Linux 5.6.13
[linux/fpc-iii.git] / fs / f2fs / f2fs.h
blob71801a1709f0fdeeb28c6488b2b61d261977e081
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * fs/f2fs/f2fs.h
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 */
8 #ifndef _LINUX_F2FS_H
9 #define _LINUX_F2FS_H
10
11 #include <linux/uio.h>
12 #include <linux/types.h>
13 #include <linux/page-flags.h>
14 #include <linux/buffer_head.h>
15 #include <linux/slab.h>
16 #include <linux/crc32.h>
17 #include <linux/magic.h>
18 #include <linux/kobject.h>
19 #include <linux/sched.h>
20 #include <linux/cred.h>
21 #include <linux/vmalloc.h>
22 #include <linux/bio.h>
23 #include <linux/blkdev.h>
24 #include <linux/quotaops.h>
25 #include <crypto/hash.h>
26
27 #include <linux/fscrypt.h>
28 #include <linux/fsverity.h>
29
30 #ifdef CONFIG_F2FS_CHECK_FS
31 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
32 #else
33 #define f2fs_bug_on(sbi, condition) \
34 do { \
35 if (unlikely(condition)) { \
36 WARN_ON(1); \
37 set_sbi_flag(sbi, SBI_NEED_FSCK); \
38 } \
39 } while (0)
40 #endif
41
42 enum {
43 FAULT_KMALLOC,
44 FAULT_KVMALLOC,
45 FAULT_PAGE_ALLOC,
46 FAULT_PAGE_GET,
47 FAULT_ALLOC_BIO,
48 FAULT_ALLOC_NID,
49 FAULT_ORPHAN,
50 FAULT_BLOCK,
51 FAULT_DIR_DEPTH,
52 FAULT_EVICT_INODE,
53 FAULT_TRUNCATE,
54 FAULT_READ_IO,
55 FAULT_CHECKPOINT,
56 FAULT_DISCARD,
57 FAULT_WRITE_IO,
58 FAULT_MAX,
59 };
60
61 #ifdef CONFIG_F2FS_FAULT_INJECTION
62 #define F2FS_ALL_FAULT_TYPE ((1 << FAULT_MAX) - 1)
63
64 struct f2fs_fault_info {
65 atomic_t inject_ops;
66 unsigned int inject_rate;
67 unsigned int inject_type;
68 };
69
70 extern const char *f2fs_fault_name[FAULT_MAX];
71 #define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
72 #endif
73
74 /*
75 * For mount options
76 */
77 #define F2FS_MOUNT_BG_GC 0x00000001
78 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
79 #define F2FS_MOUNT_DISCARD 0x00000004
80 #define F2FS_MOUNT_NOHEAP 0x00000008
81 #define F2FS_MOUNT_XATTR_USER 0x00000010
82 #define F2FS_MOUNT_POSIX_ACL 0x00000020
83 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
84 #define F2FS_MOUNT_INLINE_XATTR 0x00000080
85 #define F2FS_MOUNT_INLINE_DATA 0x00000100
86 #define F2FS_MOUNT_INLINE_DENTRY 0x00000200
87 #define F2FS_MOUNT_FLUSH_MERGE 0x00000400
88 #define F2FS_MOUNT_NOBARRIER 0x00000800
89 #define F2FS_MOUNT_FASTBOOT 0x00001000
90 #define F2FS_MOUNT_EXTENT_CACHE 0x00002000
91 #define F2FS_MOUNT_FORCE_FG_GC 0x00004000
92 #define F2FS_MOUNT_DATA_FLUSH 0x00008000
93 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
94 #define F2FS_MOUNT_ADAPTIVE 0x00020000
95 #define F2FS_MOUNT_LFS 0x00040000
96 #define F2FS_MOUNT_USRQUOTA 0x00080000
97 #define F2FS_MOUNT_GRPQUOTA 0x00100000
98 #define F2FS_MOUNT_PRJQUOTA 0x00200000
99 #define F2FS_MOUNT_QUOTA 0x00400000
100 #define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000
101 #define F2FS_MOUNT_RESERVE_ROOT 0x01000000
102 #define F2FS_MOUNT_DISABLE_CHECKPOINT 0x02000000
103 #define F2FS_MOUNT_NORECOVERY 0x04000000
104
105 #define F2FS_OPTION(sbi) ((sbi)->mount_opt)
106 #define clear_opt(sbi, option) (F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option)
107 #define set_opt(sbi, option) (F2FS_OPTION(sbi).opt |= F2FS_MOUNT_##option)
108 #define test_opt(sbi, option) (F2FS_OPTION(sbi).opt & F2FS_MOUNT_##option)
109
110 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
111 typecheck(unsigned long long, b) && \
112 ((long long)((a) - (b)) > 0))
113
114 typedef u32 block_t; /*
115 * should not change u32, since it is the on-disk block
116 * address format, __le32.
117 */
118 typedef u32 nid_t;
119
120 #define COMPRESS_EXT_NUM 16
121
122 struct f2fs_mount_info {
123 unsigned int opt;
124 int write_io_size_bits; /* Write IO size bits */
125 block_t root_reserved_blocks; /* root reserved blocks */
126 kuid_t s_resuid; /* reserved blocks for uid */
127 kgid_t s_resgid; /* reserved blocks for gid */
128 int active_logs; /* # of active logs */
129 int inline_xattr_size; /* inline xattr size */
130 #ifdef CONFIG_F2FS_FAULT_INJECTION
131 struct f2fs_fault_info fault_info; /* For fault injection */
132 #endif
133 #ifdef CONFIG_QUOTA
134 /* Names of quota files with journalled quota */
135 char *s_qf_names[MAXQUOTAS];
136 int s_jquota_fmt; /* Format of quota to use */
137 #endif
138 /* For which write hints are passed down to block layer */
139 int whint_mode;
140 int alloc_mode; /* segment allocation policy */
141 int fsync_mode; /* fsync policy */
142 bool test_dummy_encryption; /* test dummy encryption */
143 block_t unusable_cap; /* Amount of space allowed to be
144 * unusable when disabling checkpoint
145 */
146
147 /* For compression */
148 unsigned char compress_algorithm; /* algorithm type */
149 unsigned compress_log_size; /* cluster log size */
150 unsigned char compress_ext_cnt; /* extension count */
151 unsigned char extensions[COMPRESS_EXT_NUM][F2FS_EXTENSION_LEN]; /* extensions */
152 };
153
154 #define F2FS_FEATURE_ENCRYPT 0x0001
155 #define F2FS_FEATURE_BLKZONED 0x0002
156 #define F2FS_FEATURE_ATOMIC_WRITE 0x0004
157 #define F2FS_FEATURE_EXTRA_ATTR 0x0008
158 #define F2FS_FEATURE_PRJQUOTA 0x0010
159 #define F2FS_FEATURE_INODE_CHKSUM 0x0020
160 #define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040
161 #define F2FS_FEATURE_QUOTA_INO 0x0080
162 #define F2FS_FEATURE_INODE_CRTIME 0x0100
163 #define F2FS_FEATURE_LOST_FOUND 0x0200
164 #define F2FS_FEATURE_VERITY 0x0400
165 #define F2FS_FEATURE_SB_CHKSUM 0x0800
166 #define F2FS_FEATURE_CASEFOLD 0x1000
167 #define F2FS_FEATURE_COMPRESSION 0x2000
168
169 #define __F2FS_HAS_FEATURE(raw_super, mask) \
170 ((raw_super->feature & cpu_to_le32(mask)) != 0)
171 #define F2FS_HAS_FEATURE(sbi, mask) __F2FS_HAS_FEATURE(sbi->raw_super, mask)
172 #define F2FS_SET_FEATURE(sbi, mask) \
173 (sbi->raw_super->feature |= cpu_to_le32(mask))
174 #define F2FS_CLEAR_FEATURE(sbi, mask) \
175 (sbi->raw_super->feature &= ~cpu_to_le32(mask))
176
177 /*
178 * Default values for user and/or group using reserved blocks
179 */
180 #define F2FS_DEF_RESUID 0
181 #define F2FS_DEF_RESGID 0
182
183 /*
184 * For checkpoint manager
185 */
186 enum {
187 NAT_BITMAP,
188 SIT_BITMAP
189 };
190
191 #define CP_UMOUNT 0x00000001
192 #define CP_FASTBOOT 0x00000002
193 #define CP_SYNC 0x00000004
194 #define CP_RECOVERY 0x00000008
195 #define CP_DISCARD 0x00000010
196 #define CP_TRIMMED 0x00000020
197 #define CP_PAUSE 0x00000040
198
199 #define MAX_DISCARD_BLOCKS(sbi) BLKS_PER_SEC(sbi)
200 #define DEF_MAX_DISCARD_REQUEST 8 /* issue 8 discards per round */
201 #define DEF_MIN_DISCARD_ISSUE_TIME 50 /* 50 ms, if exists */
202 #define DEF_MID_DISCARD_ISSUE_TIME 500 /* 500 ms, if device busy */
203 #define DEF_MAX_DISCARD_ISSUE_TIME 60000 /* 60 s, if no candidates */
204 #define DEF_DISCARD_URGENT_UTIL 80 /* do more discard over 80% */
205 #define DEF_CP_INTERVAL 60 /* 60 secs */
206 #define DEF_IDLE_INTERVAL 5 /* 5 secs */
207 #define DEF_DISABLE_INTERVAL 5 /* 5 secs */
208 #define DEF_DISABLE_QUICK_INTERVAL 1 /* 1 secs */
209 #define DEF_UMOUNT_DISCARD_TIMEOUT 5 /* 5 secs */
210
211 struct cp_control {
212 int reason;
213 __u64 trim_start;
214 __u64 trim_end;
215 __u64 trim_minlen;
216 };
217
218 /*
219 * indicate meta/data type
220 */
221 enum {
222 META_CP,
223 META_NAT,
224 META_SIT,
225 META_SSA,
226 META_MAX,
227 META_POR,
228 DATA_GENERIC, /* check range only */
229 DATA_GENERIC_ENHANCE, /* strong check on range and segment bitmap */
230 DATA_GENERIC_ENHANCE_READ, /*
231 * strong check on range and segment
232 * bitmap but no warning due to race
233 * condition of read on truncated area
234 * by extent_cache
235 */
236 META_GENERIC,
237 };
238
239 /* for the list of ino */
240 enum {
241 ORPHAN_INO, /* for orphan ino list */
242 APPEND_INO, /* for append ino list */
243 UPDATE_INO, /* for update ino list */
244 TRANS_DIR_INO, /* for trasactions dir ino list */
245 FLUSH_INO, /* for multiple device flushing */
246 MAX_INO_ENTRY, /* max. list */
247 };
248
249 struct ino_entry {
250 struct list_head list; /* list head */
251 nid_t ino; /* inode number */
252 unsigned int dirty_device; /* dirty device bitmap */
253 };
254
255 /* for the list of inodes to be GCed */
256 struct inode_entry {
257 struct list_head list; /* list head */
258 struct inode *inode; /* vfs inode pointer */
259 };
260
261 struct fsync_node_entry {
262 struct list_head list; /* list head */
263 struct page *page; /* warm node page pointer */
264 unsigned int seq_id; /* sequence id */
265 };
266
267 /* for the bitmap indicate blocks to be discarded */
268 struct discard_entry {
269 struct list_head list; /* list head */
270 block_t start_blkaddr; /* start blockaddr of current segment */
271 unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */
272 };
273
274 /* default discard granularity of inner discard thread, unit: block count */
275 #define DEFAULT_DISCARD_GRANULARITY 16
276
277 /* max discard pend list number */
278 #define MAX_PLIST_NUM 512
279 #define plist_idx(blk_num) ((blk_num) >= MAX_PLIST_NUM ? \
280 (MAX_PLIST_NUM - 1) : ((blk_num) - 1))
281
282 enum {
283 D_PREP, /* initial */
284 D_PARTIAL, /* partially submitted */
285 D_SUBMIT, /* all submitted */
286 D_DONE, /* finished */
287 };
288
289 struct discard_info {
290 block_t lstart; /* logical start address */
291 block_t len; /* length */
292 block_t start; /* actual start address in dev */
293 };
294
295 struct discard_cmd {
296 struct rb_node rb_node; /* rb node located in rb-tree */
297 union {
298 struct {
299 block_t lstart; /* logical start address */
300 block_t len; /* length */
301 block_t start; /* actual start address in dev */
302 };
303 struct discard_info di; /* discard info */
304
305 };
306 struct list_head list; /* command list */
307 struct completion wait; /* compleation */
308 struct block_device *bdev; /* bdev */
309 unsigned short ref; /* reference count */
310 unsigned char state; /* state */
311 unsigned char queued; /* queued discard */
312 int error; /* bio error */
313 spinlock_t lock; /* for state/bio_ref updating */
314 unsigned short bio_ref; /* bio reference count */
315 };
316
317 enum {
318 DPOLICY_BG,
319 DPOLICY_FORCE,
320 DPOLICY_FSTRIM,
321 DPOLICY_UMOUNT,
322 MAX_DPOLICY,
323 };
324
325 struct discard_policy {
326 int type; /* type of discard */
327 unsigned int min_interval; /* used for candidates exist */
328 unsigned int mid_interval; /* used for device busy */
329 unsigned int max_interval; /* used for candidates not exist */
330 unsigned int max_requests; /* # of discards issued per round */
331 unsigned int io_aware_gran; /* minimum granularity discard not be aware of I/O */
332 bool io_aware; /* issue discard in idle time */
333 bool sync; /* submit discard with REQ_SYNC flag */
334 bool ordered; /* issue discard by lba order */
335 unsigned int granularity; /* discard granularity */
336 int timeout; /* discard timeout for put_super */
337 };
338
339 struct discard_cmd_control {
340 struct task_struct *f2fs_issue_discard; /* discard thread */
341 struct list_head entry_list; /* 4KB discard entry list */
342 struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */
343 struct list_head wait_list; /* store on-flushing entries */
344 struct list_head fstrim_list; /* in-flight discard from fstrim */
345 wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */
346 unsigned int discard_wake; /* to wake up discard thread */
347 struct mutex cmd_lock;
348 unsigned int nr_discards; /* # of discards in the list */
349 unsigned int max_discards; /* max. discards to be issued */
350 unsigned int discard_granularity; /* discard granularity */
351 unsigned int undiscard_blks; /* # of undiscard blocks */
352 unsigned int next_pos; /* next discard position */
353 atomic_t issued_discard; /* # of issued discard */
354 atomic_t queued_discard; /* # of queued discard */
355 atomic_t discard_cmd_cnt; /* # of cached cmd count */
356 struct rb_root_cached root; /* root of discard rb-tree */
357 bool rbtree_check; /* config for consistence check */
358 };
359
360 /* for the list of fsync inodes, used only during recovery */
361 struct fsync_inode_entry {
362 struct list_head list; /* list head */
363 struct inode *inode; /* vfs inode pointer */
364 block_t blkaddr; /* block address locating the last fsync */
365 block_t last_dentry; /* block address locating the last dentry */
366 };
367
368 #define nats_in_cursum(jnl) (le16_to_cpu((jnl)->n_nats))
369 #define sits_in_cursum(jnl) (le16_to_cpu((jnl)->n_sits))
370
371 #define nat_in_journal(jnl, i) ((jnl)->nat_j.entries[i].ne)
372 #define nid_in_journal(jnl, i) ((jnl)->nat_j.entries[i].nid)
373 #define sit_in_journal(jnl, i) ((jnl)->sit_j.entries[i].se)
374 #define segno_in_journal(jnl, i) ((jnl)->sit_j.entries[i].segno)
375
376 #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
377 #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
378
379 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
380 {
381 int before = nats_in_cursum(journal);
382
383 journal->n_nats = cpu_to_le16(before + i);
384 return before;
385 }
386
387 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
388 {
389 int before = sits_in_cursum(journal);
390
391 journal->n_sits = cpu_to_le16(before + i);
392 return before;
393 }
394
395 static inline bool __has_cursum_space(struct f2fs_journal *journal,
396 int size, int type)
397 {
398 if (type == NAT_JOURNAL)
399 return size <= MAX_NAT_JENTRIES(journal);
400 return size <= MAX_SIT_JENTRIES(journal);
401 }
402
403 /*
404 * ioctl commands
405 */
406 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
407 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
408 #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
409
410 #define F2FS_IOCTL_MAGIC 0xf5
411 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
412 #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
413 #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
414 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
415 #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
416 #define F2FS_IOC_GARBAGE_COLLECT _IOW(F2FS_IOCTL_MAGIC, 6, __u32)
417 #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
418 #define F2FS_IOC_DEFRAGMENT _IOWR(F2FS_IOCTL_MAGIC, 8, \
419 struct f2fs_defragment)
420 #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
421 struct f2fs_move_range)
422 #define F2FS_IOC_FLUSH_DEVICE _IOW(F2FS_IOCTL_MAGIC, 10, \
423 struct f2fs_flush_device)
424 #define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \
425 struct f2fs_gc_range)
426 #define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32)
427 #define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
428 #define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
429 #define F2FS_IOC_PRECACHE_EXTENTS _IO(F2FS_IOCTL_MAGIC, 15)
430 #define F2FS_IOC_RESIZE_FS _IOW(F2FS_IOCTL_MAGIC, 16, __u64)
431
432 #define F2FS_IOC_GET_VOLUME_NAME FS_IOC_GETFSLABEL
433 #define F2FS_IOC_SET_VOLUME_NAME FS_IOC_SETFSLABEL
434
435 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
436 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
437 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
438
439 /*
440 * should be same as XFS_IOC_GOINGDOWN.
441 * Flags for going down operation used by FS_IOC_GOINGDOWN
442 */
443 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
444 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
445 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
446 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
447 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
448 #define F2FS_GOING_DOWN_NEED_FSCK 0x4 /* going down to trigger fsck */
449
450 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
451 /*
452 * ioctl commands in 32 bit emulation
453 */
454 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
455 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
456 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
457 #endif
458
459 #define F2FS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
460 #define F2FS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
461
462 struct f2fs_gc_range {
463 u32 sync;
464 u64 start;
465 u64 len;
466 };
467
468 struct f2fs_defragment {
469 u64 start;
470 u64 len;
471 };
472
473 struct f2fs_move_range {
474 u32 dst_fd; /* destination fd */
475 u64 pos_in; /* start position in src_fd */
476 u64 pos_out; /* start position in dst_fd */
477 u64 len; /* size to move */
478 };
479
480 struct f2fs_flush_device {
481 u32 dev_num; /* device number to flush */
482 u32 segments; /* # of segments to flush */
483 };
484
485 /* for inline stuff */
486 #define DEF_INLINE_RESERVED_SIZE 1
487 static inline int get_extra_isize(struct inode *inode);
488 static inline int get_inline_xattr_addrs(struct inode *inode);
489 #define MAX_INLINE_DATA(inode) (sizeof(__le32) * \
490 (CUR_ADDRS_PER_INODE(inode) - \
491 get_inline_xattr_addrs(inode) - \
492 DEF_INLINE_RESERVED_SIZE))
493
494 /* for inline dir */
495 #define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
496 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
497 BITS_PER_BYTE + 1))
498 #define INLINE_DENTRY_BITMAP_SIZE(inode) \
499 DIV_ROUND_UP(NR_INLINE_DENTRY(inode), BITS_PER_BYTE)
500 #define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \
501 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
502 NR_INLINE_DENTRY(inode) + \
503 INLINE_DENTRY_BITMAP_SIZE(inode)))
504
505 /*
506 * For INODE and NODE manager
507 */
508 /* for directory operations */
509 struct f2fs_dentry_ptr {
510 struct inode *inode;
511 void *bitmap;
512 struct f2fs_dir_entry *dentry;
513 __u8 (*filename)[F2FS_SLOT_LEN];
514 int max;
515 int nr_bitmap;
516 };
517
518 static inline void make_dentry_ptr_block(struct inode *inode,
519 struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
520 {
521 d->inode = inode;
522 d->max = NR_DENTRY_IN_BLOCK;
523 d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
524 d->bitmap = t->dentry_bitmap;
525 d->dentry = t->dentry;
526 d->filename = t->filename;
527 }
528
529 static inline void make_dentry_ptr_inline(struct inode *inode,
530 struct f2fs_dentry_ptr *d, void *t)
531 {
532 int entry_cnt = NR_INLINE_DENTRY(inode);
533 int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
534 int reserved_size = INLINE_RESERVED_SIZE(inode);
535
536 d->inode = inode;
537 d->max = entry_cnt;
538 d->nr_bitmap = bitmap_size;
539 d->bitmap = t;
540 d->dentry = t + bitmap_size + reserved_size;
541 d->filename = t + bitmap_size + reserved_size +
542 SIZE_OF_DIR_ENTRY * entry_cnt;
543 }
544
545 /*
546 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
547 * as its node offset to distinguish from index node blocks.
548 * But some bits are used to mark the node block.
549 */
550 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
551 >> OFFSET_BIT_SHIFT)
552 enum {
553 ALLOC_NODE, /* allocate a new node page if needed */
554 LOOKUP_NODE, /* look up a node without readahead */
555 LOOKUP_NODE_RA, /*
556 * look up a node with readahead called
557 * by get_data_block.
558 */
559 };
560
561 #define DEFAULT_RETRY_IO_COUNT 8 /* maximum retry read IO count */
562
563 /* maximum retry quota flush count */
564 #define DEFAULT_RETRY_QUOTA_FLUSH_COUNT 8
565
566 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
567
568 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
569
570 /* for in-memory extent cache entry */
571 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
572
573 /* number of extent info in extent cache we try to shrink */
574 #define EXTENT_CACHE_SHRINK_NUMBER 128
575
576 struct rb_entry {
577 struct rb_node rb_node; /* rb node located in rb-tree */
578 unsigned int ofs; /* start offset of the entry */
579 unsigned int len; /* length of the entry */
580 };
581
582 struct extent_info {
583 unsigned int fofs; /* start offset in a file */
584 unsigned int len; /* length of the extent */
585 u32 blk; /* start block address of the extent */
586 };
587
588 struct extent_node {
589 struct rb_node rb_node; /* rb node located in rb-tree */
590 struct extent_info ei; /* extent info */
591 struct list_head list; /* node in global extent list of sbi */
592 struct extent_tree *et; /* extent tree pointer */
593 };
594
595 struct extent_tree {
596 nid_t ino; /* inode number */
597 struct rb_root_cached root; /* root of extent info rb-tree */
598 struct extent_node *cached_en; /* recently accessed extent node */
599 struct extent_info largest; /* largested extent info */
600 struct list_head list; /* to be used by sbi->zombie_list */
601 rwlock_t lock; /* protect extent info rb-tree */
602 atomic_t node_cnt; /* # of extent node in rb-tree*/
603 bool largest_updated; /* largest extent updated */
604 };
605
606 /*
607 * This structure is taken from ext4_map_blocks.
608 *
609 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
610 */
611 #define F2FS_MAP_NEW (1 << BH_New)
612 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
613 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
614 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
615 F2FS_MAP_UNWRITTEN)
616
617 struct f2fs_map_blocks {
618 block_t m_pblk;
619 block_t m_lblk;
620 unsigned int m_len;
621 unsigned int m_flags;
622 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
623 pgoff_t *m_next_extent; /* point to next possible extent */
624 int m_seg_type;
625 bool m_may_create; /* indicate it is from write path */
626 };
627
628 /* for flag in get_data_block */
629 enum {
630 F2FS_GET_BLOCK_DEFAULT,
631 F2FS_GET_BLOCK_FIEMAP,
632 F2FS_GET_BLOCK_BMAP,
633 F2FS_GET_BLOCK_DIO,
634 F2FS_GET_BLOCK_PRE_DIO,
635 F2FS_GET_BLOCK_PRE_AIO,
636 F2FS_GET_BLOCK_PRECACHE,
637 };
638
639 /*
640 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
641 */
642 #define FADVISE_COLD_BIT 0x01
643 #define FADVISE_LOST_PINO_BIT 0x02
644 #define FADVISE_ENCRYPT_BIT 0x04
645 #define FADVISE_ENC_NAME_BIT 0x08
646 #define FADVISE_KEEP_SIZE_BIT 0x10
647 #define FADVISE_HOT_BIT 0x20
648 #define FADVISE_VERITY_BIT 0x40
649
650 #define FADVISE_MODIFIABLE_BITS (FADVISE_COLD_BIT | FADVISE_HOT_BIT)
651
652 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
653 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
654 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
655 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
656 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
657 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
658 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
659 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
660 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
661 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
662 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
663 #define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT)
664 #define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
665 #define file_is_hot(inode) is_file(inode, FADVISE_HOT_BIT)
666 #define file_set_hot(inode) set_file(inode, FADVISE_HOT_BIT)
667 #define file_clear_hot(inode) clear_file(inode, FADVISE_HOT_BIT)
668 #define file_is_verity(inode) is_file(inode, FADVISE_VERITY_BIT)
669 #define file_set_verity(inode) set_file(inode, FADVISE_VERITY_BIT)
670
671 #define DEF_DIR_LEVEL 0
672
673 enum {
674 GC_FAILURE_PIN,
675 GC_FAILURE_ATOMIC,
676 MAX_GC_FAILURE
677 };
678
679 /* used for f2fs_inode_info->flags */
680 enum {
681 FI_NEW_INODE, /* indicate newly allocated inode */
682 FI_DIRTY_INODE, /* indicate inode is dirty or not */
683 FI_AUTO_RECOVER, /* indicate inode is recoverable */
684 FI_DIRTY_DIR, /* indicate directory has dirty pages */
685 FI_INC_LINK, /* need to increment i_nlink */
686 FI_ACL_MODE, /* indicate acl mode */
687 FI_NO_ALLOC, /* should not allocate any blocks */
688 FI_FREE_NID, /* free allocated nide */
689 FI_NO_EXTENT, /* not to use the extent cache */
690 FI_INLINE_XATTR, /* used for inline xattr */
691 FI_INLINE_DATA, /* used for inline data*/
692 FI_INLINE_DENTRY, /* used for inline dentry */
693 FI_APPEND_WRITE, /* inode has appended data */
694 FI_UPDATE_WRITE, /* inode has in-place-update data */
695 FI_NEED_IPU, /* used for ipu per file */
696 FI_ATOMIC_FILE, /* indicate atomic file */
697 FI_ATOMIC_COMMIT, /* indicate the state of atomical committing */
698 FI_VOLATILE_FILE, /* indicate volatile file */
699 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
700 FI_DROP_CACHE, /* drop dirty page cache */
701 FI_DATA_EXIST, /* indicate data exists */
702 FI_INLINE_DOTS, /* indicate inline dot dentries */
703 FI_DO_DEFRAG, /* indicate defragment is running */
704 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
705 FI_NO_PREALLOC, /* indicate skipped preallocated blocks */
706 FI_HOT_DATA, /* indicate file is hot */
707 FI_EXTRA_ATTR, /* indicate file has extra attribute */
708 FI_PROJ_INHERIT, /* indicate file inherits projectid */
709 FI_PIN_FILE, /* indicate file should not be gced */
710 FI_ATOMIC_REVOKE_REQUEST, /* request to drop atomic data */
711 FI_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */
712 FI_COMPRESSED_FILE, /* indicate file's data can be compressed */
713 FI_MMAP_FILE, /* indicate file was mmapped */
714 FI_MAX, /* max flag, never be used */
715 };
716
717 struct f2fs_inode_info {
718 struct inode vfs_inode; /* serve a vfs inode */
719 unsigned long i_flags; /* keep an inode flags for ioctl */
720 unsigned char i_advise; /* use to give file attribute hints */
721 unsigned char i_dir_level; /* use for dentry level for large dir */
722 unsigned int i_current_depth; /* only for directory depth */
723 /* for gc failure statistic */
724 unsigned int i_gc_failures[MAX_GC_FAILURE];
725 unsigned int i_pino; /* parent inode number */
726 umode_t i_acl_mode; /* keep file acl mode temporarily */
727
728 /* Use below internally in f2fs*/
729 unsigned long flags[BITS_TO_LONGS(FI_MAX)]; /* use to pass per-file flags */
730 struct rw_semaphore i_sem; /* protect fi info */
731 atomic_t dirty_pages; /* # of dirty pages */
732 f2fs_hash_t chash; /* hash value of given file name */
733 unsigned int clevel; /* maximum level of given file name */
734 struct task_struct *task; /* lookup and create consistency */
735 struct task_struct *cp_task; /* separate cp/wb IO stats*/
736 nid_t i_xattr_nid; /* node id that contains xattrs */
737 loff_t last_disk_size; /* lastly written file size */
738
739 #ifdef CONFIG_QUOTA
740 struct dquot *i_dquot[MAXQUOTAS];
741
742 /* quota space reservation, managed internally by quota code */
743 qsize_t i_reserved_quota;
744 #endif
745 struct list_head dirty_list; /* dirty list for dirs and files */
746 struct list_head gdirty_list; /* linked in global dirty list */
747 struct list_head inmem_ilist; /* list for inmem inodes */
748 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
749 struct task_struct *inmem_task; /* store inmemory task */
750 struct mutex inmem_lock; /* lock for inmemory pages */
751 struct extent_tree *extent_tree; /* cached extent_tree entry */
752
753 /* avoid racing between foreground op and gc */
754 struct rw_semaphore i_gc_rwsem[2];
755 struct rw_semaphore i_mmap_sem;
756 struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
757
758 int i_extra_isize; /* size of extra space located in i_addr */
759 kprojid_t i_projid; /* id for project quota */
760 int i_inline_xattr_size; /* inline xattr size */
761 struct timespec64 i_crtime; /* inode creation time */
762 struct timespec64 i_disk_time[4];/* inode disk times */
763
764 /* for file compress */
765 u64 i_compr_blocks; /* # of compressed blocks */
766 unsigned char i_compress_algorithm; /* algorithm type */
767 unsigned char i_log_cluster_size; /* log of cluster size */
768 unsigned int i_cluster_size; /* cluster size */
769 };
770
771 static inline void get_extent_info(struct extent_info *ext,
772 struct f2fs_extent *i_ext)
773 {
774 ext->fofs = le32_to_cpu(i_ext->fofs);
775 ext->blk = le32_to_cpu(i_ext->blk);
776 ext->len = le32_to_cpu(i_ext->len);
777 }
778
779 static inline void set_raw_extent(struct extent_info *ext,
780 struct f2fs_extent *i_ext)
781 {
782 i_ext->fofs = cpu_to_le32(ext->fofs);
783 i_ext->blk = cpu_to_le32(ext->blk);
784 i_ext->len = cpu_to_le32(ext->len);
785 }
786
787 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
788 u32 blk, unsigned int len)
789 {
790 ei->fofs = fofs;
791 ei->blk = blk;
792 ei->len = len;
793 }
794
795 static inline bool __is_discard_mergeable(struct discard_info *back,
796 struct discard_info *front, unsigned int max_len)
797 {
798 return (back->lstart + back->len == front->lstart) &&
799 (back->len + front->len <= max_len);
800 }
801
802 static inline bool __is_discard_back_mergeable(struct discard_info *cur,
803 struct discard_info *back, unsigned int max_len)
804 {
805 return __is_discard_mergeable(back, cur, max_len);
806 }
807
808 static inline bool __is_discard_front_mergeable(struct discard_info *cur,
809 struct discard_info *front, unsigned int max_len)
810 {
811 return __is_discard_mergeable(cur, front, max_len);
812 }
813
814 static inline bool __is_extent_mergeable(struct extent_info *back,
815 struct extent_info *front)
816 {
817 return (back->fofs + back->len == front->fofs &&
818 back->blk + back->len == front->blk);
819 }
820
821 static inline bool __is_back_mergeable(struct extent_info *cur,
822 struct extent_info *back)
823 {
824 return __is_extent_mergeable(back, cur);
825 }
826
827 static inline bool __is_front_mergeable(struct extent_info *cur,
828 struct extent_info *front)
829 {
830 return __is_extent_mergeable(cur, front);
831 }
832
833 extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
834 static inline void __try_update_largest_extent(struct extent_tree *et,
835 struct extent_node *en)
836 {
837 if (en->ei.len > et->largest.len) {
838 et->largest = en->ei;
839 et->largest_updated = true;
840 }
841 }
842
843 /*
844 * For free nid management
845 */
846 enum nid_state {
847 FREE_NID, /* newly added to free nid list */
848 PREALLOC_NID, /* it is preallocated */
849 MAX_NID_STATE,
850 };
851
852 struct f2fs_nm_info {
853 block_t nat_blkaddr; /* base disk address of NAT */
854 nid_t max_nid; /* maximum possible node ids */
855 nid_t available_nids; /* # of available node ids */
856 nid_t next_scan_nid; /* the next nid to be scanned */
857 unsigned int ram_thresh; /* control the memory footprint */
858 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
859 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
860
861 /* NAT cache management */
862 struct radix_tree_root nat_root;/* root of the nat entry cache */
863 struct radix_tree_root nat_set_root;/* root of the nat set cache */
864 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
865 struct list_head nat_entries; /* cached nat entry list (clean) */
866 spinlock_t nat_list_lock; /* protect clean nat entry list */
867 unsigned int nat_cnt; /* the # of cached nat entries */
868 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
869 unsigned int nat_blocks; /* # of nat blocks */
870
871 /* free node ids management */
872 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
873 struct list_head free_nid_list; /* list for free nids excluding preallocated nids */
874 unsigned int nid_cnt[MAX_NID_STATE]; /* the number of free node id */
875 spinlock_t nid_list_lock; /* protect nid lists ops */
876 struct mutex build_lock; /* lock for build free nids */
877 unsigned char **free_nid_bitmap;
878 unsigned char *nat_block_bitmap;
879 unsigned short *free_nid_count; /* free nid count of NAT block */
880
881 /* for checkpoint */
882 char *nat_bitmap; /* NAT bitmap pointer */
883
884 unsigned int nat_bits_blocks; /* # of nat bits blocks */
885 unsigned char *nat_bits; /* NAT bits blocks */
886 unsigned char *full_nat_bits; /* full NAT pages */
887 unsigned char *empty_nat_bits; /* empty NAT pages */
888 #ifdef CONFIG_F2FS_CHECK_FS
889 char *nat_bitmap_mir; /* NAT bitmap mirror */
890 #endif
891 int bitmap_size; /* bitmap size */
892 };
893
894 /*
895 * this structure is used as one of function parameters.
896 * all the information are dedicated to a given direct node block determined
897 * by the data offset in a file.
898 */
899 struct dnode_of_data {
900 struct inode *inode; /* vfs inode pointer */
901 struct page *inode_page; /* its inode page, NULL is possible */
902 struct page *node_page; /* cached direct node page */
903 nid_t nid; /* node id of the direct node block */
904 unsigned int ofs_in_node; /* data offset in the node page */
905 bool inode_page_locked; /* inode page is locked or not */
906 bool node_changed; /* is node block changed */
907 char cur_level; /* level of hole node page */
908 char max_level; /* level of current page located */
909 block_t data_blkaddr; /* block address of the node block */
910 };
911
912 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
913 struct page *ipage, struct page *npage, nid_t nid)
914 {
915 memset(dn, 0, sizeof(*dn));
916 dn->inode = inode;
917 dn->inode_page = ipage;
918 dn->node_page = npage;
919 dn->nid = nid;
920 }
921
922 /*
923 * For SIT manager
924 *
925 * By default, there are 6 active log areas across the whole main area.
926 * When considering hot and cold data separation to reduce cleaning overhead,
927 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
928 * respectively.
929 * In the current design, you should not change the numbers intentionally.
930 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
931 * logs individually according to the underlying devices. (default: 6)
932 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
933 * data and 8 for node logs.
934 */
935 #define NR_CURSEG_DATA_TYPE (3)
936 #define NR_CURSEG_NODE_TYPE (3)
937 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
938
939 enum {
940 CURSEG_HOT_DATA = 0, /* directory entry blocks */
941 CURSEG_WARM_DATA, /* data blocks */
942 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
943 CURSEG_HOT_NODE, /* direct node blocks of directory files */
944 CURSEG_WARM_NODE, /* direct node blocks of normal files */
945 CURSEG_COLD_NODE, /* indirect node blocks */
946 NO_CHECK_TYPE,
947 CURSEG_COLD_DATA_PINNED,/* cold data for pinned file */
948 };
949
950 struct flush_cmd {
951 struct completion wait;
952 struct llist_node llnode;
953 nid_t ino;
954 int ret;
955 };
956
957 struct flush_cmd_control {
958 struct task_struct *f2fs_issue_flush; /* flush thread */
959 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
960 atomic_t issued_flush; /* # of issued flushes */
961 atomic_t queued_flush; /* # of queued flushes */
962 struct llist_head issue_list; /* list for command issue */
963 struct llist_node *dispatch_list; /* list for command dispatch */
964 };
965
966 struct f2fs_sm_info {
967 struct sit_info *sit_info; /* whole segment information */
968 struct free_segmap_info *free_info; /* free segment information */
969 struct dirty_seglist_info *dirty_info; /* dirty segment information */
970 struct curseg_info *curseg_array; /* active segment information */
971
972 struct rw_semaphore curseg_lock; /* for preventing curseg change */
973
974 block_t seg0_blkaddr; /* block address of 0'th segment */
975 block_t main_blkaddr; /* start block address of main area */
976 block_t ssa_blkaddr; /* start block address of SSA area */
977
978 unsigned int segment_count; /* total # of segments */
979 unsigned int main_segments; /* # of segments in main area */
980 unsigned int reserved_segments; /* # of reserved segments */
981 unsigned int ovp_segments; /* # of overprovision segments */
982
983 /* a threshold to reclaim prefree segments */
984 unsigned int rec_prefree_segments;
985
986 /* for batched trimming */
987 unsigned int trim_sections; /* # of sections to trim */
988
989 struct list_head sit_entry_set; /* sit entry set list */
990
991 unsigned int ipu_policy; /* in-place-update policy */
992 unsigned int min_ipu_util; /* in-place-update threshold */
993 unsigned int min_fsync_blocks; /* threshold for fsync */
994 unsigned int min_seq_blocks; /* threshold for sequential blocks */
995 unsigned int min_hot_blocks; /* threshold for hot block allocation */
996 unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */
997
998 /* for flush command control */
999 struct flush_cmd_control *fcc_info;
1000
1001 /* for discard command control */
1002 struct discard_cmd_control *dcc_info;
1003 };
1004
1005 /*
1006 * For superblock
1007 */
1008 /*
1009 * COUNT_TYPE for monitoring
1010 *
1011 * f2fs monitors the number of several block types such as on-writeback,
1012 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
1013 */
1014 #define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
1015 enum count_type {
1016 F2FS_DIRTY_DENTS,
1017 F2FS_DIRTY_DATA,
1018 F2FS_DIRTY_QDATA,
1019 F2FS_DIRTY_NODES,
1020 F2FS_DIRTY_META,
1021 F2FS_INMEM_PAGES,
1022 F2FS_DIRTY_IMETA,
1023 F2FS_WB_CP_DATA,
1024 F2FS_WB_DATA,
1025 F2FS_RD_DATA,
1026 F2FS_RD_NODE,
1027 F2FS_RD_META,
1028 F2FS_DIO_WRITE,
1029 F2FS_DIO_READ,
1030 NR_COUNT_TYPE,
1031 };
1032
1033 /*
1034 * The below are the page types of bios used in submit_bio().
1035 * The available types are:
1036 * DATA User data pages. It operates as async mode.
1037 * NODE Node pages. It operates as async mode.
1038 * META FS metadata pages such as SIT, NAT, CP.
1039 * NR_PAGE_TYPE The number of page types.
1040 * META_FLUSH Make sure the previous pages are written
1041 * with waiting the bio's completion
1042 * ... Only can be used with META.
1043 */
1044 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
1045 enum page_type {
1046 DATA,
1047 NODE,
1048 META,
1049 NR_PAGE_TYPE,
1050 META_FLUSH,
1051 INMEM, /* the below types are used by tracepoints only. */
1052 INMEM_DROP,
1053 INMEM_INVALIDATE,
1054 INMEM_REVOKE,
1055 IPU,
1056 OPU,
1057 };
1058
1059 enum temp_type {
1060 HOT = 0, /* must be zero for meta bio */
1061 WARM,
1062 COLD,
1063 NR_TEMP_TYPE,
1064 };
1065
1066 enum need_lock_type {
1067 LOCK_REQ = 0,
1068 LOCK_DONE,
1069 LOCK_RETRY,
1070 };
1071
1072 enum cp_reason_type {
1073 CP_NO_NEEDED,
1074 CP_NON_REGULAR,
1075 CP_COMPRESSED,
1076 CP_HARDLINK,
1077 CP_SB_NEED_CP,
1078 CP_WRONG_PINO,
1079 CP_NO_SPC_ROLL,
1080 CP_NODE_NEED_CP,
1081 CP_FASTBOOT_MODE,
1082 CP_SPEC_LOG_NUM,
1083 CP_RECOVER_DIR,
1084 };
1085
1086 enum iostat_type {
1087 APP_DIRECT_IO, /* app direct IOs */
1088 APP_BUFFERED_IO, /* app buffered IOs */
1089 APP_WRITE_IO, /* app write IOs */
1090 APP_MAPPED_IO, /* app mapped IOs */
1091 FS_DATA_IO, /* data IOs from kworker/fsync/reclaimer */
1092 FS_NODE_IO, /* node IOs from kworker/fsync/reclaimer */
1093 FS_META_IO, /* meta IOs from kworker/reclaimer */
1094 FS_GC_DATA_IO, /* data IOs from forground gc */
1095 FS_GC_NODE_IO, /* node IOs from forground gc */
1096 FS_CP_DATA_IO, /* data IOs from checkpoint */
1097 FS_CP_NODE_IO, /* node IOs from checkpoint */
1098 FS_CP_META_IO, /* meta IOs from checkpoint */
1099 FS_DISCARD, /* discard */
1100 NR_IO_TYPE,
1101 };
1102
1103 struct f2fs_io_info {
1104 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
1105 nid_t ino; /* inode number */
1106 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
1107 enum temp_type temp; /* contains HOT/WARM/COLD */
1108 int op; /* contains REQ_OP_ */
1109 int op_flags; /* req_flag_bits */
1110 block_t new_blkaddr; /* new block address to be written */
1111 block_t old_blkaddr; /* old block address before Cow */
1112 struct page *page; /* page to be written */
1113 struct page *encrypted_page; /* encrypted page */
1114 struct page *compressed_page; /* compressed page */
1115 struct list_head list; /* serialize IOs */
1116 bool submitted; /* indicate IO submission */
1117 int need_lock; /* indicate we need to lock cp_rwsem */
1118 bool in_list; /* indicate fio is in io_list */
1119 bool is_por; /* indicate IO is from recovery or not */
1120 bool retry; /* need to reallocate block address */
1121 int compr_blocks; /* # of compressed block addresses */
1122 bool encrypted; /* indicate file is encrypted */
1123 enum iostat_type io_type; /* io type */
1124 struct writeback_control *io_wbc; /* writeback control */
1125 struct bio **bio; /* bio for ipu */
1126 sector_t *last_block; /* last block number in bio */
1127 unsigned char version; /* version of the node */
1128 };
1129
1130 struct bio_entry {
1131 struct bio *bio;
1132 struct list_head list;
1133 };
1134
1135 #define is_read_io(rw) ((rw) == READ)
1136 struct f2fs_bio_info {
1137 struct f2fs_sb_info *sbi; /* f2fs superblock */
1138 struct bio *bio; /* bios to merge */
1139 sector_t last_block_in_bio; /* last block number */
1140 struct f2fs_io_info fio; /* store buffered io info. */
1141 struct rw_semaphore io_rwsem; /* blocking op for bio */
1142 spinlock_t io_lock; /* serialize DATA/NODE IOs */
1143 struct list_head io_list; /* track fios */
1144 struct list_head bio_list; /* bio entry list head */
1145 struct rw_semaphore bio_list_lock; /* lock to protect bio entry list */
1146 };
1147
1148 #define FDEV(i) (sbi->devs[i])
1149 #define RDEV(i) (raw_super->devs[i])
1150 struct f2fs_dev_info {
1151 struct block_device *bdev;
1152 char path[MAX_PATH_LEN];
1153 unsigned int total_segments;
1154 block_t start_blk;
1155 block_t end_blk;
1156 #ifdef CONFIG_BLK_DEV_ZONED
1157 unsigned int nr_blkz; /* Total number of zones */
1158 unsigned long *blkz_seq; /* Bitmap indicating sequential zones */
1159 #endif
1160 };
1161
1162 enum inode_type {
1163 DIR_INODE, /* for dirty dir inode */
1164 FILE_INODE, /* for dirty regular/symlink inode */
1165 DIRTY_META, /* for all dirtied inode metadata */
1166 ATOMIC_FILE, /* for all atomic files */
1167 NR_INODE_TYPE,
1168 };
1169
1170 /* for inner inode cache management */
1171 struct inode_management {
1172 struct radix_tree_root ino_root; /* ino entry array */
1173 spinlock_t ino_lock; /* for ino entry lock */
1174 struct list_head ino_list; /* inode list head */
1175 unsigned long ino_num; /* number of entries */
1176 };
1177
1178 /* For s_flag in struct f2fs_sb_info */
1179 enum {
1180 SBI_IS_DIRTY, /* dirty flag for checkpoint */
1181 SBI_IS_CLOSE, /* specify unmounting */
1182 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
1183 SBI_POR_DOING, /* recovery is doing or not */
1184 SBI_NEED_SB_WRITE, /* need to recover superblock */
1185 SBI_NEED_CP, /* need to checkpoint */
1186 SBI_IS_SHUTDOWN, /* shutdown by ioctl */
1187 SBI_IS_RECOVERED, /* recovered orphan/data */
1188 SBI_CP_DISABLED, /* CP was disabled last mount */
1189 SBI_CP_DISABLED_QUICK, /* CP was disabled quickly */
1190 SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */
1191 SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */
1192 SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */
1193 SBI_IS_RESIZEFS, /* resizefs is in process */
1194 };
1195
1196 enum {
1197 CP_TIME,
1198 REQ_TIME,
1199 DISCARD_TIME,
1200 GC_TIME,
1201 DISABLE_TIME,
1202 UMOUNT_DISCARD_TIMEOUT,
1203 MAX_TIME,
1204 };
1205
1206 enum {
1207 GC_NORMAL,
1208 GC_IDLE_CB,
1209 GC_IDLE_GREEDY,
1210 GC_URGENT,
1211 };
1212
1213 enum {
1214 WHINT_MODE_OFF, /* not pass down write hints */
1215 WHINT_MODE_USER, /* try to pass down hints given by users */
1216 WHINT_MODE_FS, /* pass down hints with F2FS policy */
1217 };
1218
1219 enum {
1220 ALLOC_MODE_DEFAULT, /* stay default */
1221 ALLOC_MODE_REUSE, /* reuse segments as much as possible */
1222 };
1223
1224 enum fsync_mode {
1225 FSYNC_MODE_POSIX, /* fsync follows posix semantics */
1226 FSYNC_MODE_STRICT, /* fsync behaves in line with ext4 */
1227 FSYNC_MODE_NOBARRIER, /* fsync behaves nobarrier based on posix */
1228 };
1229
1230 /*
1231 * this value is set in page as a private data which indicate that
1232 * the page is atomically written, and it is in inmem_pages list.
1233 */
1234 #define ATOMIC_WRITTEN_PAGE ((unsigned long)-1)
1235 #define DUMMY_WRITTEN_PAGE ((unsigned long)-2)
1236
1237 #define IS_ATOMIC_WRITTEN_PAGE(page) \
1238 (page_private(page) == (unsigned long)ATOMIC_WRITTEN_PAGE)
1239 #define IS_DUMMY_WRITTEN_PAGE(page) \
1240 (page_private(page) == (unsigned long)DUMMY_WRITTEN_PAGE)
1241
1242 #ifdef CONFIG_FS_ENCRYPTION
1243 #define DUMMY_ENCRYPTION_ENABLED(sbi) \
1244 (unlikely(F2FS_OPTION(sbi).test_dummy_encryption))
1245 #else
1246 #define DUMMY_ENCRYPTION_ENABLED(sbi) (0)
1247 #endif
1248
1249 /* For compression */
1250 enum compress_algorithm_type {
1251 COMPRESS_LZO,
1252 COMPRESS_LZ4,
1253 COMPRESS_MAX,
1254 };
1255
1256 #define COMPRESS_DATA_RESERVED_SIZE 4
1257 struct compress_data {
1258 __le32 clen; /* compressed data size */
1259 __le32 chksum; /* checksum of compressed data */
1260 __le32 reserved[COMPRESS_DATA_RESERVED_SIZE]; /* reserved */
1261 u8 cdata[]; /* compressed data */
1262 };
1263
1264 #define COMPRESS_HEADER_SIZE (sizeof(struct compress_data))
1265
1266 #define F2FS_COMPRESSED_PAGE_MAGIC 0xF5F2C000
1267
1268 /* compress context */
1269 struct compress_ctx {
1270 struct inode *inode; /* inode the context belong to */
1271 pgoff_t cluster_idx; /* cluster index number */
1272 unsigned int cluster_size; /* page count in cluster */
1273 unsigned int log_cluster_size; /* log of cluster size */
1274 struct page **rpages; /* pages store raw data in cluster */
1275 unsigned int nr_rpages; /* total page number in rpages */
1276 struct page **cpages; /* pages store compressed data in cluster */
1277 unsigned int nr_cpages; /* total page number in cpages */
1278 void *rbuf; /* virtual mapped address on rpages */
1279 struct compress_data *cbuf; /* virtual mapped address on cpages */
1280 size_t rlen; /* valid data length in rbuf */
1281 size_t clen; /* valid data length in cbuf */
1282 void *private; /* payload buffer for specified compression algorithm */
1283 };
1284
1285 /* compress context for write IO path */
1286 struct compress_io_ctx {
1287 u32 magic; /* magic number to indicate page is compressed */
1288 struct inode *inode; /* inode the context belong to */
1289 struct page **rpages; /* pages store raw data in cluster */
1290 unsigned int nr_rpages; /* total page number in rpages */
1291 refcount_t ref; /* referrence count of raw page */
1292 };
1293
1294 /* decompress io context for read IO path */
1295 struct decompress_io_ctx {
1296 u32 magic; /* magic number to indicate page is compressed */
1297 struct inode *inode; /* inode the context belong to */
1298 pgoff_t cluster_idx; /* cluster index number */
1299 unsigned int cluster_size; /* page count in cluster */
1300 unsigned int log_cluster_size; /* log of cluster size */
1301 struct page **rpages; /* pages store raw data in cluster */
1302 unsigned int nr_rpages; /* total page number in rpages */
1303 struct page **cpages; /* pages store compressed data in cluster */
1304 unsigned int nr_cpages; /* total page number in cpages */
1305 struct page **tpages; /* temp pages to pad holes in cluster */
1306 void *rbuf; /* virtual mapped address on rpages */
1307 struct compress_data *cbuf; /* virtual mapped address on cpages */
1308 size_t rlen; /* valid data length in rbuf */
1309 size_t clen; /* valid data length in cbuf */
1310 refcount_t ref; /* referrence count of compressed page */
1311 bool failed; /* indicate IO error during decompression */
1312 };
1313
1314 #define NULL_CLUSTER ((unsigned int)(~0))
1315 #define MIN_COMPRESS_LOG_SIZE 2
1316 #define MAX_COMPRESS_LOG_SIZE 8
1317
1318 struct f2fs_sb_info {
1319 struct super_block *sb; /* pointer to VFS super block */
1320 struct proc_dir_entry *s_proc; /* proc entry */
1321 struct f2fs_super_block *raw_super; /* raw super block pointer */
1322 struct rw_semaphore sb_lock; /* lock for raw super block */
1323 int valid_super_block; /* valid super block no */
1324 unsigned long s_flag; /* flags for sbi */
1325 struct mutex writepages; /* mutex for writepages() */
1326 #ifdef CONFIG_UNICODE
1327 struct unicode_map *s_encoding;
1328 __u16 s_encoding_flags;
1329 #endif
1330
1331 #ifdef CONFIG_BLK_DEV_ZONED
1332 unsigned int blocks_per_blkz; /* F2FS blocks per zone */
1333 unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
1334 #endif
1335
1336 /* for node-related operations */
1337 struct f2fs_nm_info *nm_info; /* node manager */
1338 struct inode *node_inode; /* cache node blocks */
1339
1340 /* for segment-related operations */
1341 struct f2fs_sm_info *sm_info; /* segment manager */
1342
1343 /* for bio operations */
1344 struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */
1345 /* keep migration IO order for LFS mode */
1346 struct rw_semaphore io_order_lock;
1347 mempool_t *write_io_dummy; /* Dummy pages */
1348
1349 /* for checkpoint */
1350 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
1351 int cur_cp_pack; /* remain current cp pack */
1352 spinlock_t cp_lock; /* for flag in ckpt */
1353 struct inode *meta_inode; /* cache meta blocks */
1354 struct mutex cp_mutex; /* checkpoint procedure lock */
1355 struct rw_semaphore cp_rwsem; /* blocking FS operations */
1356 struct rw_semaphore node_write; /* locking node writes */
1357 struct rw_semaphore node_change; /* locking node change */
1358 wait_queue_head_t cp_wait;
1359 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
1360 long interval_time[MAX_TIME]; /* to store thresholds */
1361
1362 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
1363
1364 spinlock_t fsync_node_lock; /* for node entry lock */
1365 struct list_head fsync_node_list; /* node list head */
1366 unsigned int fsync_seg_id; /* sequence id */
1367 unsigned int fsync_node_num; /* number of node entries */
1368
1369 /* for orphan inode, use 0'th array */
1370 unsigned int max_orphans; /* max orphan inodes */
1371
1372 /* for inode management */
1373 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
1374 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
1375 struct mutex flush_lock; /* for flush exclusion */
1376
1377 /* for extent tree cache */
1378 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
1379 struct mutex extent_tree_lock; /* locking extent radix tree */
1380 struct list_head extent_list; /* lru list for shrinker */
1381 spinlock_t extent_lock; /* locking extent lru list */
1382 atomic_t total_ext_tree; /* extent tree count */
1383 struct list_head zombie_list; /* extent zombie tree list */
1384 atomic_t total_zombie_tree; /* extent zombie tree count */
1385 atomic_t total_ext_node; /* extent info count */
1386
1387 /* basic filesystem units */
1388 unsigned int log_sectors_per_block; /* log2 sectors per block */
1389 unsigned int log_blocksize; /* log2 block size */
1390 unsigned int blocksize; /* block size */
1391 unsigned int root_ino_num; /* root inode number*/
1392 unsigned int node_ino_num; /* node inode number*/
1393 unsigned int meta_ino_num; /* meta inode number*/
1394 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
1395 unsigned int blocks_per_seg; /* blocks per segment */
1396 unsigned int segs_per_sec; /* segments per section */
1397 unsigned int secs_per_zone; /* sections per zone */
1398 unsigned int total_sections; /* total section count */
1399 struct mutex resize_mutex; /* for resize exclusion */
1400 unsigned int total_node_count; /* total node block count */
1401 unsigned int total_valid_node_count; /* valid node block count */
1402 loff_t max_file_blocks; /* max block index of file */
1403 int dir_level; /* directory level */
1404 int readdir_ra; /* readahead inode in readdir */
1405
1406 block_t user_block_count; /* # of user blocks */
1407 block_t total_valid_block_count; /* # of valid blocks */
1408 block_t discard_blks; /* discard command candidats */
1409 block_t last_valid_block_count; /* for recovery */
1410 block_t reserved_blocks; /* configurable reserved blocks */
1411 block_t current_reserved_blocks; /* current reserved blocks */
1412
1413 /* Additional tracking for no checkpoint mode */
1414 block_t unusable_block_count; /* # of blocks saved by last cp */
1415
1416 unsigned int nquota_files; /* # of quota sysfile */
1417 struct rw_semaphore quota_sem; /* blocking cp for flags */
1418
1419 /* # of pages, see count_type */
1420 atomic_t nr_pages[NR_COUNT_TYPE];
1421 /* # of allocated blocks */
1422 struct percpu_counter alloc_valid_block_count;
1423
1424 /* writeback control */
1425 atomic_t wb_sync_req[META]; /* count # of WB_SYNC threads */
1426
1427 /* valid inode count */
1428 struct percpu_counter total_valid_inode_count;
1429
1430 struct f2fs_mount_info mount_opt; /* mount options */
1431
1432 /* for cleaning operations */
1433 struct rw_semaphore gc_lock; /*
1434 * semaphore for GC, avoid
1435 * race between GC and GC or CP
1436 */
1437 struct f2fs_gc_kthread *gc_thread; /* GC thread */
1438 unsigned int cur_victim_sec; /* current victim section num */
1439 unsigned int gc_mode; /* current GC state */
1440 unsigned int next_victim_seg[2]; /* next segment in victim section */
1441 /* for skip statistic */
1442 unsigned int atomic_files; /* # of opened atomic file */
1443 unsigned long long skipped_atomic_files[2]; /* FG_GC and BG_GC */
1444 unsigned long long skipped_gc_rwsem; /* FG_GC only */
1445
1446 /* threshold for gc trials on pinned files */
1447 u64 gc_pin_file_threshold;
1448 struct rw_semaphore pin_sem;
1449
1450 /* maximum # of trials to find a victim segment for SSR and GC */
1451 unsigned int max_victim_search;
1452 /* migration granularity of garbage collection, unit: segment */
1453 unsigned int migration_granularity;
1454
1455 /*
1456 * for stat information.
1457 * one is for the LFS mode, and the other is for the SSR mode.
1458 */
1459 #ifdef CONFIG_F2FS_STAT_FS
1460 struct f2fs_stat_info *stat_info; /* FS status information */
1461 atomic_t meta_count[META_MAX]; /* # of meta blocks */
1462 unsigned int segment_count[2]; /* # of allocated segments */
1463 unsigned int block_count[2]; /* # of allocated blocks */
1464 atomic_t inplace_count; /* # of inplace update */
1465 atomic64_t total_hit_ext; /* # of lookup extent cache */
1466 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
1467 atomic64_t read_hit_largest; /* # of hit largest extent node */
1468 atomic64_t read_hit_cached; /* # of hit cached extent node */
1469 atomic_t inline_xattr; /* # of inline_xattr inodes */
1470 atomic_t inline_inode; /* # of inline_data inodes */
1471 atomic_t inline_dir; /* # of inline_dentry inodes */
1472 atomic_t compr_inode; /* # of compressed inodes */
1473 atomic_t compr_blocks; /* # of compressed blocks */
1474 atomic_t vw_cnt; /* # of volatile writes */
1475 atomic_t max_aw_cnt; /* max # of atomic writes */
1476 atomic_t max_vw_cnt; /* max # of volatile writes */
1477 unsigned int io_skip_bggc; /* skip background gc for in-flight IO */
1478 unsigned int other_skip_bggc; /* skip background gc for other reasons */
1479 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
1480 #endif
1481 spinlock_t stat_lock; /* lock for stat operations */
1482
1483 /* For app/fs IO statistics */
1484 spinlock_t iostat_lock;
1485 unsigned long long write_iostat[NR_IO_TYPE];
1486 bool iostat_enable;
1487
1488 /* For sysfs suppport */
1489 struct kobject s_kobj;
1490 struct completion s_kobj_unregister;
1491
1492 /* For shrinker support */
1493 struct list_head s_list;
1494 int s_ndevs; /* number of devices */
1495 struct f2fs_dev_info *devs; /* for device list */
1496 unsigned int dirty_device; /* for checkpoint data flush */
1497 spinlock_t dev_lock; /* protect dirty_device */
1498 struct mutex umount_mutex;
1499 unsigned int shrinker_run_no;
1500
1501 /* For write statistics */
1502 u64 sectors_written_start;
1503 u64 kbytes_written;
1504
1505 /* Reference to checksum algorithm driver via cryptoapi */
1506 struct crypto_shash *s_chksum_driver;
1507
1508 /* Precomputed FS UUID checksum for seeding other checksums */
1509 __u32 s_chksum_seed;
1510
1511 struct workqueue_struct *post_read_wq; /* post read workqueue */
1512 };
1513
1514 struct f2fs_private_dio {
1515 struct inode *inode;
1516 void *orig_private;
1517 bio_end_io_t *orig_end_io;
1518 bool write;
1519 };
1520
1521 #ifdef CONFIG_F2FS_FAULT_INJECTION
1522 #define f2fs_show_injection_info(sbi, type) \
1523 printk_ratelimited("%sF2FS-fs (%s) : inject %s in %s of %pS\n", \
1524 KERN_INFO, sbi->sb->s_id, \
1525 f2fs_fault_name[type], \
1526 __func__, __builtin_return_address(0))
1527 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1528 {
1529 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1530
1531 if (!ffi->inject_rate)
1532 return false;
1533
1534 if (!IS_FAULT_SET(ffi, type))
1535 return false;
1536
1537 atomic_inc(&ffi->inject_ops);
1538 if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
1539 atomic_set(&ffi->inject_ops, 0);
1540 return true;
1541 }
1542 return false;
1543 }
1544 #else
1545 #define f2fs_show_injection_info(sbi, type) do { } while (0)
1546 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1547 {
1548 return false;
1549 }
1550 #endif
1551
1552 /*
1553 * Test if the mounted volume is a multi-device volume.
1554 * - For a single regular disk volume, sbi->s_ndevs is 0.
1555 * - For a single zoned disk volume, sbi->s_ndevs is 1.
1556 * - For a multi-device volume, sbi->s_ndevs is always 2 or more.
1557 */
1558 static inline bool f2fs_is_multi_device(struct f2fs_sb_info *sbi)
1559 {
1560 return sbi->s_ndevs > 1;
1561 }
1562
1563 /* For write statistics. Suppose sector size is 512 bytes,
1564 * and the return value is in kbytes. s is of struct f2fs_sb_info.
1565 */
1566 #define BD_PART_WRITTEN(s) \
1567 (((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[STAT_WRITE]) - \
1568 (s)->sectors_written_start) >> 1)
1569
1570 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
1571 {
1572 unsigned long now = jiffies;
1573
1574 sbi->last_time[type] = now;
1575
1576 /* DISCARD_TIME and GC_TIME are based on REQ_TIME */
1577 if (type == REQ_TIME) {
1578 sbi->last_time[DISCARD_TIME] = now;
1579 sbi->last_time[GC_TIME] = now;
1580 }
1581 }
1582
1583 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
1584 {
1585 unsigned long interval = sbi->interval_time[type] * HZ;
1586
1587 return time_after(jiffies, sbi->last_time[type] + interval);
1588 }
1589
1590 static inline unsigned int f2fs_time_to_wait(struct f2fs_sb_info *sbi,
1591 int type)
1592 {
1593 unsigned long interval = sbi->interval_time[type] * HZ;
1594 unsigned int wait_ms = 0;
1595 long delta;
1596
1597 delta = (sbi->last_time[type] + interval) - jiffies;
1598 if (delta > 0)
1599 wait_ms = jiffies_to_msecs(delta);
1600
1601 return wait_ms;
1602 }
1603
1604 /*
1605 * Inline functions
1606 */
1607 static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc,
1608 const void *address, unsigned int length)
1609 {
1610 struct {
1611 struct shash_desc shash;
1612 char ctx[4];
1613 } desc;
1614 int err;
1615
1616 BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx));
1617
1618 desc.shash.tfm = sbi->s_chksum_driver;
1619 *(u32 *)desc.ctx = crc;
1620
1621 err = crypto_shash_update(&desc.shash, address, length);
1622 BUG_ON(err);
1623
1624 return *(u32 *)desc.ctx;
1625 }
1626
1627 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
1628 unsigned int length)
1629 {
1630 return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length);
1631 }
1632
1633 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
1634 void *buf, size_t buf_size)
1635 {
1636 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
1637 }
1638
1639 static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc,
1640 const void *address, unsigned int length)
1641 {
1642 return __f2fs_crc32(sbi, crc, address, length);
1643 }
1644
1645 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
1646 {
1647 return container_of(inode, struct f2fs_inode_info, vfs_inode);
1648 }
1649
1650 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
1651 {
1652 return sb->s_fs_info;
1653 }
1654
1655 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
1656 {
1657 return F2FS_SB(inode->i_sb);
1658 }
1659
1660 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
1661 {
1662 return F2FS_I_SB(mapping->host);
1663 }
1664
1665 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
1666 {
1667 return F2FS_M_SB(page_file_mapping(page));
1668 }
1669
1670 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
1671 {
1672 return (struct f2fs_super_block *)(sbi->raw_super);
1673 }
1674
1675 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1676 {
1677 return (struct f2fs_checkpoint *)(sbi->ckpt);
1678 }
1679
1680 static inline struct f2fs_node *F2FS_NODE(struct page *page)
1681 {
1682 return (struct f2fs_node *)page_address(page);
1683 }
1684
1685 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1686 {
1687 return &((struct f2fs_node *)page_address(page))->i;
1688 }
1689
1690 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1691 {
1692 return (struct f2fs_nm_info *)(sbi->nm_info);
1693 }
1694
1695 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1696 {
1697 return (struct f2fs_sm_info *)(sbi->sm_info);
1698 }
1699
1700 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1701 {
1702 return (struct sit_info *)(SM_I(sbi)->sit_info);
1703 }
1704
1705 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1706 {
1707 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1708 }
1709
1710 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1711 {
1712 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1713 }
1714
1715 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1716 {
1717 return sbi->meta_inode->i_mapping;
1718 }
1719
1720 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1721 {
1722 return sbi->node_inode->i_mapping;
1723 }
1724
1725 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1726 {
1727 return test_bit(type, &sbi->s_flag);
1728 }
1729
1730 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1731 {
1732 set_bit(type, &sbi->s_flag);
1733 }
1734
1735 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1736 {
1737 clear_bit(type, &sbi->s_flag);
1738 }
1739
1740 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1741 {
1742 return le64_to_cpu(cp->checkpoint_ver);
1743 }
1744
1745 static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type)
1746 {
1747 if (type < F2FS_MAX_QUOTAS)
1748 return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]);
1749 return 0;
1750 }
1751
1752 static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
1753 {
1754 size_t crc_offset = le32_to_cpu(cp->checksum_offset);
1755 return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
1756 }
1757
1758 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1759 {
1760 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1761
1762 return ckpt_flags & f;
1763 }
1764
1765 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1766 {
1767 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1768 }
1769
1770 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1771 {
1772 unsigned int ckpt_flags;
1773
1774 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1775 ckpt_flags |= f;
1776 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1777 }
1778
1779 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1780 {
1781 unsigned long flags;
1782
1783 spin_lock_irqsave(&sbi->cp_lock, flags);
1784 __set_ckpt_flags(F2FS_CKPT(sbi), f);
1785 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1786 }
1787
1788 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1789 {
1790 unsigned int ckpt_flags;
1791
1792 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1793 ckpt_flags &= (~f);
1794 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1795 }
1796
1797 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1798 {
1799 unsigned long flags;
1800
1801 spin_lock_irqsave(&sbi->cp_lock, flags);
1802 __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1803 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1804 }
1805
1806 static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
1807 {
1808 unsigned long flags;
1809 unsigned char *nat_bits;
1810
1811 /*
1812 * In order to re-enable nat_bits we need to call fsck.f2fs by
1813 * set_sbi_flag(sbi, SBI_NEED_FSCK). But it may give huge cost,
1814 * so let's rely on regular fsck or unclean shutdown.
1815 */
1816
1817 if (lock)
1818 spin_lock_irqsave(&sbi->cp_lock, flags);
1819 __clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
1820 nat_bits = NM_I(sbi)->nat_bits;
1821 NM_I(sbi)->nat_bits = NULL;
1822 if (lock)
1823 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1824
1825 kvfree(nat_bits);
1826 }
1827
1828 static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
1829 struct cp_control *cpc)
1830 {
1831 bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1832
1833 return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1834 }
1835
1836 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1837 {
1838 down_read(&sbi->cp_rwsem);
1839 }
1840
1841 static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
1842 {
1843 return down_read_trylock(&sbi->cp_rwsem);
1844 }
1845
1846 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1847 {
1848 up_read(&sbi->cp_rwsem);
1849 }
1850
1851 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1852 {
1853 down_write(&sbi->cp_rwsem);
1854 }
1855
1856 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1857 {
1858 up_write(&sbi->cp_rwsem);
1859 }
1860
1861 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1862 {
1863 int reason = CP_SYNC;
1864
1865 if (test_opt(sbi, FASTBOOT))
1866 reason = CP_FASTBOOT;
1867 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1868 reason = CP_UMOUNT;
1869 return reason;
1870 }
1871
1872 static inline bool __remain_node_summaries(int reason)
1873 {
1874 return (reason & (CP_UMOUNT | CP_FASTBOOT));
1875 }
1876
1877 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1878 {
1879 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1880 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1881 }
1882
1883 /*
1884 * Check whether the inode has blocks or not
1885 */
1886 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1887 {
1888 block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
1889
1890 return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1891 }
1892
1893 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1894 {
1895 return ofs == XATTR_NODE_OFFSET;
1896 }
1897
1898 static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
1899 struct inode *inode, bool cap)
1900 {
1901 if (!inode)
1902 return true;
1903 if (!test_opt(sbi, RESERVE_ROOT))
1904 return false;
1905 if (IS_NOQUOTA(inode))
1906 return true;
1907 if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid()))
1908 return true;
1909 if (!gid_eq(F2FS_OPTION(sbi).s_resgid, GLOBAL_ROOT_GID) &&
1910 in_group_p(F2FS_OPTION(sbi).s_resgid))
1911 return true;
1912 if (cap && capable(CAP_SYS_RESOURCE))
1913 return true;
1914 return false;
1915 }
1916
1917 static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
1918 static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
1919 struct inode *inode, blkcnt_t *count)
1920 {
1921 blkcnt_t diff = 0, release = 0;
1922 block_t avail_user_block_count;
1923 int ret;
1924
1925 ret = dquot_reserve_block(inode, *count);
1926 if (ret)
1927 return ret;
1928
1929 if (time_to_inject(sbi, FAULT_BLOCK)) {
1930 f2fs_show_injection_info(sbi, FAULT_BLOCK);
1931 release = *count;
1932 goto release_quota;
1933 }
1934
1935 /*
1936 * let's increase this in prior to actual block count change in order
1937 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1938 */
1939 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1940
1941 spin_lock(&sbi->stat_lock);
1942 sbi->total_valid_block_count += (block_t)(*count);
1943 avail_user_block_count = sbi->user_block_count -
1944 sbi->current_reserved_blocks;
1945
1946 if (!__allow_reserved_blocks(sbi, inode, true))
1947 avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
1948 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1949 if (avail_user_block_count > sbi->unusable_block_count)
1950 avail_user_block_count -= sbi->unusable_block_count;
1951 else
1952 avail_user_block_count = 0;
1953 }
1954 if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
1955 diff = sbi->total_valid_block_count - avail_user_block_count;
1956 if (diff > *count)
1957 diff = *count;
1958 *count -= diff;
1959 release = diff;
1960 sbi->total_valid_block_count -= diff;
1961 if (!*count) {
1962 spin_unlock(&sbi->stat_lock);
1963 goto enospc;
1964 }
1965 }
1966 spin_unlock(&sbi->stat_lock);
1967
1968 if (unlikely(release)) {
1969 percpu_counter_sub(&sbi->alloc_valid_block_count, release);
1970 dquot_release_reservation_block(inode, release);
1971 }
1972 f2fs_i_blocks_write(inode, *count, true, true);
1973 return 0;
1974
1975 enospc:
1976 percpu_counter_sub(&sbi->alloc_valid_block_count, release);
1977 release_quota:
1978 dquot_release_reservation_block(inode, release);
1979 return -ENOSPC;
1980 }
1981
1982 __printf(2, 3)
1983 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...);
1984
1985 #define f2fs_err(sbi, fmt, ...) \
1986 f2fs_printk(sbi, KERN_ERR fmt, ##__VA_ARGS__)
1987 #define f2fs_warn(sbi, fmt, ...) \
1988 f2fs_printk(sbi, KERN_WARNING fmt, ##__VA_ARGS__)
1989 #define f2fs_notice(sbi, fmt, ...) \
1990 f2fs_printk(sbi, KERN_NOTICE fmt, ##__VA_ARGS__)
1991 #define f2fs_info(sbi, fmt, ...) \
1992 f2fs_printk(sbi, KERN_INFO fmt, ##__VA_ARGS__)
1993 #define f2fs_debug(sbi, fmt, ...) \
1994 f2fs_printk(sbi, KERN_DEBUG fmt, ##__VA_ARGS__)
1995
1996 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1997 struct inode *inode,
1998 block_t count)
1999 {
2000 blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;
2001
2002 spin_lock(&sbi->stat_lock);
2003 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
2004 sbi->total_valid_block_count -= (block_t)count;
2005 if (sbi->reserved_blocks &&
2006 sbi->current_reserved_blocks < sbi->reserved_blocks)
2007 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
2008 sbi->current_reserved_blocks + count);
2009 spin_unlock(&sbi->stat_lock);
2010 if (unlikely(inode->i_blocks < sectors)) {
2011 f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu, sectors:%llu",
2012 inode->i_ino,
2013 (unsigned long long)inode->i_blocks,
2014 (unsigned long long)sectors);
2015 set_sbi_flag(sbi, SBI_NEED_FSCK);
2016 return;
2017 }
2018 f2fs_i_blocks_write(inode, count, false, true);
2019 }
2020
2021 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
2022 {
2023 atomic_inc(&sbi->nr_pages[count_type]);
2024
2025 if (count_type == F2FS_DIRTY_DENTS ||
2026 count_type == F2FS_DIRTY_NODES ||
2027 count_type == F2FS_DIRTY_META ||
2028 count_type == F2FS_DIRTY_QDATA ||
2029 count_type == F2FS_DIRTY_IMETA)
2030 set_sbi_flag(sbi, SBI_IS_DIRTY);
2031 }
2032
2033 static inline void inode_inc_dirty_pages(struct inode *inode)
2034 {
2035 atomic_inc(&F2FS_I(inode)->dirty_pages);
2036 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
2037 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
2038 if (IS_NOQUOTA(inode))
2039 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
2040 }
2041
2042 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
2043 {
2044 atomic_dec(&sbi->nr_pages[count_type]);
2045 }
2046
2047 static inline void inode_dec_dirty_pages(struct inode *inode)
2048 {
2049 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
2050 !S_ISLNK(inode->i_mode))
2051 return;
2052
2053 atomic_dec(&F2FS_I(inode)->dirty_pages);
2054 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
2055 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
2056 if (IS_NOQUOTA(inode))
2057 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
2058 }
2059
2060 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
2061 {
2062 return atomic_read(&sbi->nr_pages[count_type]);
2063 }
2064
2065 static inline int get_dirty_pages(struct inode *inode)
2066 {
2067 return atomic_read(&F2FS_I(inode)->dirty_pages);
2068 }
2069
2070 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
2071 {
2072 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
2073 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
2074 sbi->log_blocks_per_seg;
2075
2076 return segs / sbi->segs_per_sec;
2077 }
2078
2079 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
2080 {
2081 return sbi->total_valid_block_count;
2082 }
2083
2084 static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
2085 {
2086 return sbi->discard_blks;
2087 }
2088
2089 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
2090 {
2091 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2092
2093 /* return NAT or SIT bitmap */
2094 if (flag == NAT_BITMAP)
2095 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
2096 else if (flag == SIT_BITMAP)
2097 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2098
2099 return 0;
2100 }
2101
2102 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
2103 {
2104 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
2105 }
2106
2107 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
2108 {
2109 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2110 int offset;
2111
2112 if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) {
2113 offset = (flag == SIT_BITMAP) ?
2114 le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0;
2115 /*
2116 * if large_nat_bitmap feature is enabled, leave checksum
2117 * protection for all nat/sit bitmaps.
2118 */
2119 return &ckpt->sit_nat_version_bitmap + offset + sizeof(__le32);
2120 }
2121
2122 if (__cp_payload(sbi) > 0) {
2123 if (flag == NAT_BITMAP)
2124 return &ckpt->sit_nat_version_bitmap;
2125 else
2126 return (unsigned char *)ckpt + F2FS_BLKSIZE;
2127 } else {
2128 offset = (flag == NAT_BITMAP) ?
2129 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
2130 return &ckpt->sit_nat_version_bitmap + offset;
2131 }
2132 }
2133
2134 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
2135 {
2136 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
2137
2138 if (sbi->cur_cp_pack == 2)
2139 start_addr += sbi->blocks_per_seg;
2140 return start_addr;
2141 }
2142
2143 static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
2144 {
2145 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
2146
2147 if (sbi->cur_cp_pack == 1)
2148 start_addr += sbi->blocks_per_seg;
2149 return start_addr;
2150 }
2151
2152 static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
2153 {
2154 sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
2155 }
2156
2157 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
2158 {
2159 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
2160 }
2161
2162 static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
2163 struct inode *inode, bool is_inode)
2164 {
2165 block_t valid_block_count;
2166 unsigned int valid_node_count, user_block_count;
2167 int err;
2168
2169 if (is_inode) {
2170 if (inode) {
2171 err = dquot_alloc_inode(inode);
2172 if (err)
2173 return err;
2174 }
2175 } else {
2176 err = dquot_reserve_block(inode, 1);
2177 if (err)
2178 return err;
2179 }
2180
2181 if (time_to_inject(sbi, FAULT_BLOCK)) {
2182 f2fs_show_injection_info(sbi, FAULT_BLOCK);
2183 goto enospc;
2184 }
2185
2186 spin_lock(&sbi->stat_lock);
2187
2188 valid_block_count = sbi->total_valid_block_count +
2189 sbi->current_reserved_blocks + 1;
2190
2191 if (!__allow_reserved_blocks(sbi, inode, false))
2192 valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks;
2193 user_block_count = sbi->user_block_count;
2194 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2195 user_block_count -= sbi->unusable_block_count;
2196
2197 if (unlikely(valid_block_count > user_block_count)) {
2198 spin_unlock(&sbi->stat_lock);
2199 goto enospc;
2200 }
2201
2202 valid_node_count = sbi->total_valid_node_count + 1;
2203 if (unlikely(valid_node_count > sbi->total_node_count)) {
2204 spin_unlock(&sbi->stat_lock);
2205 goto enospc;
2206 }
2207
2208 sbi->total_valid_node_count++;
2209 sbi->total_valid_block_count++;
2210 spin_unlock(&sbi->stat_lock);
2211
2212 if (inode) {
2213 if (is_inode)
2214 f2fs_mark_inode_dirty_sync(inode, true);
2215 else
2216 f2fs_i_blocks_write(inode, 1, true, true);
2217 }
2218
2219 percpu_counter_inc(&sbi->alloc_valid_block_count);
2220 return 0;
2221
2222 enospc:
2223 if (is_inode) {
2224 if (inode)
2225 dquot_free_inode(inode);
2226 } else {
2227 dquot_release_reservation_block(inode, 1);
2228 }
2229 return -ENOSPC;
2230 }
2231
2232 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
2233 struct inode *inode, bool is_inode)
2234 {
2235 spin_lock(&sbi->stat_lock);
2236
2237 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
2238 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
2239
2240 sbi->total_valid_node_count--;
2241 sbi->total_valid_block_count--;
2242 if (sbi->reserved_blocks &&
2243 sbi->current_reserved_blocks < sbi->reserved_blocks)
2244 sbi->current_reserved_blocks++;
2245
2246 spin_unlock(&sbi->stat_lock);
2247
2248 if (is_inode) {
2249 dquot_free_inode(inode);
2250 } else {
2251 if (unlikely(inode->i_blocks == 0)) {
2252 f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu",
2253 inode->i_ino,
2254 (unsigned long long)inode->i_blocks);
2255 set_sbi_flag(sbi, SBI_NEED_FSCK);
2256 return;
2257 }
2258 f2fs_i_blocks_write(inode, 1, false, true);
2259 }
2260 }
2261
2262 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
2263 {
2264 return sbi->total_valid_node_count;
2265 }
2266
2267 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
2268 {
2269 percpu_counter_inc(&sbi->total_valid_inode_count);
2270 }
2271
2272 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
2273 {
2274 percpu_counter_dec(&sbi->total_valid_inode_count);
2275 }
2276
2277 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
2278 {
2279 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
2280 }
2281
2282 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
2283 pgoff_t index, bool for_write)
2284 {
2285 struct page *page;
2286
2287 if (IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) {
2288 if (!for_write)
2289 page = find_get_page_flags(mapping, index,
2290 FGP_LOCK | FGP_ACCESSED);
2291 else
2292 page = find_lock_page(mapping, index);
2293 if (page)
2294 return page;
2295
2296 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
2297 f2fs_show_injection_info(F2FS_M_SB(mapping),
2298 FAULT_PAGE_ALLOC);
2299 return NULL;
2300 }
2301 }
2302
2303 if (!for_write)
2304 return grab_cache_page(mapping, index);
2305 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
2306 }
2307
2308 static inline struct page *f2fs_pagecache_get_page(
2309 struct address_space *mapping, pgoff_t index,
2310 int fgp_flags, gfp_t gfp_mask)
2311 {
2312 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
2313 f2fs_show_injection_info(F2FS_M_SB(mapping), FAULT_PAGE_GET);
2314 return NULL;
2315 }
2316
2317 return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
2318 }
2319
2320 static inline void f2fs_copy_page(struct page *src, struct page *dst)
2321 {
2322 char *src_kaddr = kmap(src);
2323 char *dst_kaddr = kmap(dst);
2324
2325 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
2326 kunmap(dst);
2327 kunmap(src);
2328 }
2329
2330 static inline void f2fs_put_page(struct page *page, int unlock)
2331 {
2332 if (!page)
2333 return;
2334
2335 if (unlock) {
2336 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
2337 unlock_page(page);
2338 }
2339 put_page(page);
2340 }
2341
2342 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
2343 {
2344 if (dn->node_page)
2345 f2fs_put_page(dn->node_page, 1);
2346 if (dn->inode_page && dn->node_page != dn->inode_page)
2347 f2fs_put_page(dn->inode_page, 0);
2348 dn->node_page = NULL;
2349 dn->inode_page = NULL;
2350 }
2351
2352 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
2353 size_t size)
2354 {
2355 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
2356 }
2357
2358 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
2359 gfp_t flags)
2360 {
2361 void *entry;
2362
2363 entry = kmem_cache_alloc(cachep, flags);
2364 if (!entry)
2365 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
2366 return entry;
2367 }
2368
2369 static inline bool is_idle(struct f2fs_sb_info *sbi, int type)
2370 {
2371 if (sbi->gc_mode == GC_URGENT)
2372 return true;
2373
2374 if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) ||
2375 get_pages(sbi, F2FS_RD_META) || get_pages(sbi, F2FS_WB_DATA) ||
2376 get_pages(sbi, F2FS_WB_CP_DATA) ||
2377 get_pages(sbi, F2FS_DIO_READ) ||
2378 get_pages(sbi, F2FS_DIO_WRITE))
2379 return false;
2380
2381 if (type != DISCARD_TIME && SM_I(sbi) && SM_I(sbi)->dcc_info &&
2382 atomic_read(&SM_I(sbi)->dcc_info->queued_discard))
2383 return false;
2384
2385 if (SM_I(sbi) && SM_I(sbi)->fcc_info &&
2386 atomic_read(&SM_I(sbi)->fcc_info->queued_flush))
2387 return false;
2388
2389 return f2fs_time_over(sbi, type);
2390 }
2391
2392 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
2393 unsigned long index, void *item)
2394 {
2395 while (radix_tree_insert(root, index, item))
2396 cond_resched();
2397 }
2398
2399 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
2400
2401 static inline bool IS_INODE(struct page *page)
2402 {
2403 struct f2fs_node *p = F2FS_NODE(page);
2404
2405 return RAW_IS_INODE(p);
2406 }
2407
2408 static inline int offset_in_addr(struct f2fs_inode *i)
2409 {
2410 return (i->i_inline & F2FS_EXTRA_ATTR) ?
2411 (le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0;
2412 }
2413
2414 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
2415 {
2416 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
2417 }
2418
2419 static inline int f2fs_has_extra_attr(struct inode *inode);
2420 static inline block_t datablock_addr(struct inode *inode,
2421 struct page *node_page, unsigned int offset)
2422 {
2423 struct f2fs_node *raw_node;
2424 __le32 *addr_array;
2425 int base = 0;
2426 bool is_inode = IS_INODE(node_page);
2427
2428 raw_node = F2FS_NODE(node_page);
2429
2430 /* from GC path only */
2431 if (is_inode) {
2432 if (!inode)
2433 base = offset_in_addr(&raw_node->i);
2434 else if (f2fs_has_extra_attr(inode))
2435 base = get_extra_isize(inode);
2436 }
2437
2438 addr_array = blkaddr_in_node(raw_node);
2439 return le32_to_cpu(addr_array[base + offset]);
2440 }
2441
2442 static inline int f2fs_test_bit(unsigned int nr, char *addr)
2443 {
2444 int mask;
2445
2446 addr += (nr >> 3);
2447 mask = 1 << (7 - (nr & 0x07));
2448 return mask & *addr;
2449 }
2450
2451 static inline void f2fs_set_bit(unsigned int nr, char *addr)
2452 {
2453 int mask;
2454
2455 addr += (nr >> 3);
2456 mask = 1 << (7 - (nr & 0x07));
2457 *addr |= mask;
2458 }
2459
2460 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
2461 {
2462 int mask;
2463
2464 addr += (nr >> 3);
2465 mask = 1 << (7 - (nr & 0x07));
2466 *addr &= ~mask;
2467 }
2468
2469 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
2470 {
2471 int mask;
2472 int ret;
2473
2474 addr += (nr >> 3);
2475 mask = 1 << (7 - (nr & 0x07));
2476 ret = mask & *addr;
2477 *addr |= mask;
2478 return ret;
2479 }
2480
2481 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
2482 {
2483 int mask;
2484 int ret;
2485
2486 addr += (nr >> 3);
2487 mask = 1 << (7 - (nr & 0x07));
2488 ret = mask & *addr;
2489 *addr &= ~mask;
2490 return ret;
2491 }
2492
2493 static inline void f2fs_change_bit(unsigned int nr, char *addr)
2494 {
2495 int mask;
2496
2497 addr += (nr >> 3);
2498 mask = 1 << (7 - (nr & 0x07));
2499 *addr ^= mask;
2500 }
2501
2502 /*
2503 * On-disk inode flags (f2fs_inode::i_flags)
2504 */
2505 #define F2FS_COMPR_FL 0x00000004 /* Compress file */
2506 #define F2FS_SYNC_FL 0x00000008 /* Synchronous updates */
2507 #define F2FS_IMMUTABLE_FL 0x00000010 /* Immutable file */
2508 #define F2FS_APPEND_FL 0x00000020 /* writes to file may only append */
2509 #define F2FS_NODUMP_FL 0x00000040 /* do not dump file */
2510 #define F2FS_NOATIME_FL 0x00000080 /* do not update atime */
2511 #define F2FS_NOCOMP_FL 0x00000400 /* Don't compress */
2512 #define F2FS_INDEX_FL 0x00001000 /* hash-indexed directory */
2513 #define F2FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
2514 #define F2FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
2515 #define F2FS_CASEFOLD_FL 0x40000000 /* Casefolded file */
2516
2517 /* Flags that should be inherited by new inodes from their parent. */
2518 #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
2519 F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
2520 F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
2521
2522 /* Flags that are appropriate for regular files (all but dir-specific ones). */
2523 #define F2FS_REG_FLMASK (~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
2524 F2FS_CASEFOLD_FL))
2525
2526 /* Flags that are appropriate for non-directories/regular files. */
2527 #define F2FS_OTHER_FLMASK (F2FS_NODUMP_FL | F2FS_NOATIME_FL)
2528
2529 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
2530 {
2531 if (S_ISDIR(mode))
2532 return flags;
2533 else if (S_ISREG(mode))
2534 return flags & F2FS_REG_FLMASK;
2535 else
2536 return flags & F2FS_OTHER_FLMASK;
2537 }
2538
2539 static inline void __mark_inode_dirty_flag(struct inode *inode,
2540 int flag, bool set)
2541 {
2542 switch (flag) {
2543 case FI_INLINE_XATTR:
2544 case FI_INLINE_DATA:
2545 case FI_INLINE_DENTRY:
2546 case FI_NEW_INODE:
2547 if (set)
2548 return;
2549 /* fall through */
2550 case FI_DATA_EXIST:
2551 case FI_INLINE_DOTS:
2552 case FI_PIN_FILE:
2553 case FI_COMPRESSED_FILE:
2554 f2fs_mark_inode_dirty_sync(inode, true);
2555 }
2556 }
2557
2558 static inline void set_inode_flag(struct inode *inode, int flag)
2559 {
2560 test_and_set_bit(flag, F2FS_I(inode)->flags);
2561 __mark_inode_dirty_flag(inode, flag, true);
2562 }
2563
2564 static inline int is_inode_flag_set(struct inode *inode, int flag)
2565 {
2566 return test_bit(flag, F2FS_I(inode)->flags);
2567 }
2568
2569 static inline void clear_inode_flag(struct inode *inode, int flag)
2570 {
2571 test_and_clear_bit(flag, F2FS_I(inode)->flags);
2572 __mark_inode_dirty_flag(inode, flag, false);
2573 }
2574
2575 static inline bool f2fs_verity_in_progress(struct inode *inode)
2576 {
2577 return IS_ENABLED(CONFIG_FS_VERITY) &&
2578 is_inode_flag_set(inode, FI_VERITY_IN_PROGRESS);
2579 }
2580
2581 static inline void set_acl_inode(struct inode *inode, umode_t mode)
2582 {
2583 F2FS_I(inode)->i_acl_mode = mode;
2584 set_inode_flag(inode, FI_ACL_MODE);
2585 f2fs_mark_inode_dirty_sync(inode, false);
2586 }
2587
2588 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
2589 {
2590 if (inc)
2591 inc_nlink(inode);
2592 else
2593 drop_nlink(inode);
2594 f2fs_mark_inode_dirty_sync(inode, true);
2595 }
2596
2597 static inline void f2fs_i_blocks_write(struct inode *inode,
2598 block_t diff, bool add, bool claim)
2599 {
2600 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2601 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2602
2603 /* add = 1, claim = 1 should be dquot_reserve_block in pair */
2604 if (add) {
2605 if (claim)
2606 dquot_claim_block(inode, diff);
2607 else
2608 dquot_alloc_block_nofail(inode, diff);
2609 } else {
2610 dquot_free_block(inode, diff);
2611 }
2612
2613 f2fs_mark_inode_dirty_sync(inode, true);
2614 if (clean || recover)
2615 set_inode_flag(inode, FI_AUTO_RECOVER);
2616 }
2617
2618 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
2619 {
2620 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2621 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2622
2623 if (i_size_read(inode) == i_size)
2624 return;
2625
2626 i_size_write(inode, i_size);
2627 f2fs_mark_inode_dirty_sync(inode, true);
2628 if (clean || recover)
2629 set_inode_flag(inode, FI_AUTO_RECOVER);
2630 }
2631
2632 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
2633 {
2634 F2FS_I(inode)->i_current_depth = depth;
2635 f2fs_mark_inode_dirty_sync(inode, true);
2636 }
2637
2638 static inline void f2fs_i_gc_failures_write(struct inode *inode,
2639 unsigned int count)
2640 {
2641 F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = count;
2642 f2fs_mark_inode_dirty_sync(inode, true);
2643 }
2644
2645 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
2646 {
2647 F2FS_I(inode)->i_xattr_nid = xnid;
2648 f2fs_mark_inode_dirty_sync(inode, true);
2649 }
2650
2651 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
2652 {
2653 F2FS_I(inode)->i_pino = pino;
2654 f2fs_mark_inode_dirty_sync(inode, true);
2655 }
2656
2657 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
2658 {
2659 struct f2fs_inode_info *fi = F2FS_I(inode);
2660
2661 if (ri->i_inline & F2FS_INLINE_XATTR)
2662 set_bit(FI_INLINE_XATTR, fi->flags);
2663 if (ri->i_inline & F2FS_INLINE_DATA)
2664 set_bit(FI_INLINE_DATA, fi->flags);
2665 if (ri->i_inline & F2FS_INLINE_DENTRY)
2666 set_bit(FI_INLINE_DENTRY, fi->flags);
2667 if (ri->i_inline & F2FS_DATA_EXIST)
2668 set_bit(FI_DATA_EXIST, fi->flags);
2669 if (ri->i_inline & F2FS_INLINE_DOTS)
2670 set_bit(FI_INLINE_DOTS, fi->flags);
2671 if (ri->i_inline & F2FS_EXTRA_ATTR)
2672 set_bit(FI_EXTRA_ATTR, fi->flags);
2673 if (ri->i_inline & F2FS_PIN_FILE)
2674 set_bit(FI_PIN_FILE, fi->flags);
2675 }
2676
2677 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
2678 {
2679 ri->i_inline = 0;
2680
2681 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
2682 ri->i_inline |= F2FS_INLINE_XATTR;
2683 if (is_inode_flag_set(inode, FI_INLINE_DATA))
2684 ri->i_inline |= F2FS_INLINE_DATA;
2685 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
2686 ri->i_inline |= F2FS_INLINE_DENTRY;
2687 if (is_inode_flag_set(inode, FI_DATA_EXIST))
2688 ri->i_inline |= F2FS_DATA_EXIST;
2689 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
2690 ri->i_inline |= F2FS_INLINE_DOTS;
2691 if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
2692 ri->i_inline |= F2FS_EXTRA_ATTR;
2693 if (is_inode_flag_set(inode, FI_PIN_FILE))
2694 ri->i_inline |= F2FS_PIN_FILE;
2695 }
2696
2697 static inline int f2fs_has_extra_attr(struct inode *inode)
2698 {
2699 return is_inode_flag_set(inode, FI_EXTRA_ATTR);
2700 }
2701
2702 static inline int f2fs_has_inline_xattr(struct inode *inode)
2703 {
2704 return is_inode_flag_set(inode, FI_INLINE_XATTR);
2705 }
2706
2707 static inline int f2fs_compressed_file(struct inode *inode)
2708 {
2709 return S_ISREG(inode->i_mode) &&
2710 is_inode_flag_set(inode, FI_COMPRESSED_FILE);
2711 }
2712
2713 static inline unsigned int addrs_per_inode(struct inode *inode)
2714 {
2715 unsigned int addrs = CUR_ADDRS_PER_INODE(inode) -
2716 get_inline_xattr_addrs(inode);
2717
2718 if (!f2fs_compressed_file(inode))
2719 return addrs;
2720 return ALIGN_DOWN(addrs, F2FS_I(inode)->i_cluster_size);
2721 }
2722
2723 static inline unsigned int addrs_per_block(struct inode *inode)
2724 {
2725 if (!f2fs_compressed_file(inode))
2726 return DEF_ADDRS_PER_BLOCK;
2727 return ALIGN_DOWN(DEF_ADDRS_PER_BLOCK, F2FS_I(inode)->i_cluster_size);
2728 }
2729
2730 static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
2731 {
2732 struct f2fs_inode *ri = F2FS_INODE(page);
2733
2734 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
2735 get_inline_xattr_addrs(inode)]);
2736 }
2737
2738 static inline int inline_xattr_size(struct inode *inode)
2739 {
2740 if (f2fs_has_inline_xattr(inode))
2741 return get_inline_xattr_addrs(inode) * sizeof(__le32);
2742 return 0;
2743 }
2744
2745 static inline int f2fs_has_inline_data(struct inode *inode)
2746 {
2747 return is_inode_flag_set(inode, FI_INLINE_DATA);
2748 }
2749
2750 static inline int f2fs_exist_data(struct inode *inode)
2751 {
2752 return is_inode_flag_set(inode, FI_DATA_EXIST);
2753 }
2754
2755 static inline int f2fs_has_inline_dots(struct inode *inode)
2756 {
2757 return is_inode_flag_set(inode, FI_INLINE_DOTS);
2758 }
2759
2760 static inline int f2fs_is_mmap_file(struct inode *inode)
2761 {
2762 return is_inode_flag_set(inode, FI_MMAP_FILE);
2763 }
2764
2765 static inline bool f2fs_is_pinned_file(struct inode *inode)
2766 {
2767 return is_inode_flag_set(inode, FI_PIN_FILE);
2768 }
2769
2770 static inline bool f2fs_is_atomic_file(struct inode *inode)
2771 {
2772 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
2773 }
2774
2775 static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
2776 {
2777 return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
2778 }
2779
2780 static inline bool f2fs_is_volatile_file(struct inode *inode)
2781 {
2782 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2783 }
2784
2785 static inline bool f2fs_is_first_block_written(struct inode *inode)
2786 {
2787 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2788 }
2789
2790 static inline bool f2fs_is_drop_cache(struct inode *inode)
2791 {
2792 return is_inode_flag_set(inode, FI_DROP_CACHE);
2793 }
2794
2795 static inline void *inline_data_addr(struct inode *inode, struct page *page)
2796 {
2797 struct f2fs_inode *ri = F2FS_INODE(page);
2798 int extra_size = get_extra_isize(inode);
2799
2800 return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
2801 }
2802
2803 static inline int f2fs_has_inline_dentry(struct inode *inode)
2804 {
2805 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2806 }
2807
2808 static inline int is_file(struct inode *inode, int type)
2809 {
2810 return F2FS_I(inode)->i_advise & type;
2811 }
2812
2813 static inline void set_file(struct inode *inode, int type)
2814 {
2815 F2FS_I(inode)->i_advise |= type;
2816 f2fs_mark_inode_dirty_sync(inode, true);
2817 }
2818
2819 static inline void clear_file(struct inode *inode, int type)
2820 {
2821 F2FS_I(inode)->i_advise &= ~type;
2822 f2fs_mark_inode_dirty_sync(inode, true);
2823 }
2824
2825 static inline bool f2fs_is_time_consistent(struct inode *inode)
2826 {
2827 if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime))
2828 return false;
2829 if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime))
2830 return false;
2831 if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime))
2832 return false;
2833 if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 3,
2834 &F2FS_I(inode)->i_crtime))
2835 return false;
2836 return true;
2837 }
2838
2839 static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
2840 {
2841 bool ret;
2842
2843 if (dsync) {
2844 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2845
2846 spin_lock(&sbi->inode_lock[DIRTY_META]);
2847 ret = list_empty(&F2FS_I(inode)->gdirty_list);
2848 spin_unlock(&sbi->inode_lock[DIRTY_META]);
2849 return ret;
2850 }
2851 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
2852 file_keep_isize(inode) ||
2853 i_size_read(inode) & ~PAGE_MASK)
2854 return false;
2855
2856 if (!f2fs_is_time_consistent(inode))
2857 return false;
2858
2859 down_read(&F2FS_I(inode)->i_sem);
2860 ret = F2FS_I(inode)->last_disk_size == i_size_read(inode);
2861 up_read(&F2FS_I(inode)->i_sem);
2862
2863 return ret;
2864 }
2865
2866 static inline bool f2fs_readonly(struct super_block *sb)
2867 {
2868 return sb_rdonly(sb);
2869 }
2870
2871 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
2872 {
2873 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2874 }
2875
2876 static inline bool is_dot_dotdot(const struct qstr *str)
2877 {
2878 if (str->len == 1 && str->name[0] == '.')
2879 return true;
2880
2881 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
2882 return true;
2883
2884 return false;
2885 }
2886
2887 static inline bool f2fs_may_extent_tree(struct inode *inode)
2888 {
2889 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2890
2891 if (!test_opt(sbi, EXTENT_CACHE) ||
2892 is_inode_flag_set(inode, FI_NO_EXTENT) ||
2893 is_inode_flag_set(inode, FI_COMPRESSED_FILE))
2894 return false;
2895
2896 /*
2897 * for recovered files during mount do not create extents
2898 * if shrinker is not registered.
2899 */
2900 if (list_empty(&sbi->s_list))
2901 return false;
2902
2903 return S_ISREG(inode->i_mode);
2904 }
2905
2906 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
2907 size_t size, gfp_t flags)
2908 {
2909 void *ret;
2910
2911 if (time_to_inject(sbi, FAULT_KMALLOC)) {
2912 f2fs_show_injection_info(sbi, FAULT_KMALLOC);
2913 return NULL;
2914 }
2915
2916 ret = kmalloc(size, flags);
2917 if (ret)
2918 return ret;
2919
2920 return kvmalloc(size, flags);
2921 }
2922
2923 static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
2924 size_t size, gfp_t flags)
2925 {
2926 return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
2927 }
2928
2929 static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi,
2930 size_t size, gfp_t flags)
2931 {
2932 if (time_to_inject(sbi, FAULT_KVMALLOC)) {
2933 f2fs_show_injection_info(sbi, FAULT_KVMALLOC);
2934 return NULL;
2935 }
2936
2937 return kvmalloc(size, flags);
2938 }
2939
2940 static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
2941 size_t size, gfp_t flags)
2942 {
2943 return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
2944 }
2945
2946 static inline int get_extra_isize(struct inode *inode)
2947 {
2948 return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
2949 }
2950
2951 static inline int get_inline_xattr_addrs(struct inode *inode)
2952 {
2953 return F2FS_I(inode)->i_inline_xattr_size;
2954 }
2955
2956 #define f2fs_get_inode_mode(i) \
2957 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
2958 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
2959
2960 #define F2FS_TOTAL_EXTRA_ATTR_SIZE \
2961 (offsetof(struct f2fs_inode, i_extra_end) - \
2962 offsetof(struct f2fs_inode, i_extra_isize)) \
2963
2964 #define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr))
2965 #define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \
2966 ((offsetof(typeof(*(f2fs_inode)), field) + \
2967 sizeof((f2fs_inode)->field)) \
2968 <= (F2FS_OLD_ATTRIBUTE_SIZE + (extra_isize))) \
2969
2970 static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
2971 {
2972 int i;
2973
2974 spin_lock(&sbi->iostat_lock);
2975 for (i = 0; i < NR_IO_TYPE; i++)
2976 sbi->write_iostat[i] = 0;
2977 spin_unlock(&sbi->iostat_lock);
2978 }
2979
2980 static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
2981 enum iostat_type type, unsigned long long io_bytes)
2982 {
2983 if (!sbi->iostat_enable)
2984 return;
2985 spin_lock(&sbi->iostat_lock);
2986 sbi->write_iostat[type] += io_bytes;
2987
2988 if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
2989 sbi->write_iostat[APP_BUFFERED_IO] =
2990 sbi->write_iostat[APP_WRITE_IO] -
2991 sbi->write_iostat[APP_DIRECT_IO];
2992 spin_unlock(&sbi->iostat_lock);
2993 }
2994
2995 #define __is_large_section(sbi) ((sbi)->segs_per_sec > 1)
2996
2997 #define __is_meta_io(fio) (PAGE_TYPE_OF_BIO((fio)->type) == META)
2998
2999 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
3000 block_t blkaddr, int type);
3001 static inline void verify_blkaddr(struct f2fs_sb_info *sbi,
3002 block_t blkaddr, int type)
3003 {
3004 if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) {
3005 f2fs_err(sbi, "invalid blkaddr: %u, type: %d, run fsck to fix.",
3006 blkaddr, type);
3007 f2fs_bug_on(sbi, 1);
3008 }
3009 }
3010
3011 static inline bool __is_valid_data_blkaddr(block_t blkaddr)
3012 {
3013 if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR ||
3014 blkaddr == COMPRESS_ADDR)
3015 return false;
3016 return true;
3017 }
3018
3019 static inline void f2fs_set_page_private(struct page *page,
3020 unsigned long data)
3021 {
3022 if (PagePrivate(page))
3023 return;
3024
3025 get_page(page);
3026 SetPagePrivate(page);
3027 set_page_private(page, data);
3028 }
3029
3030 static inline void f2fs_clear_page_private(struct page *page)
3031 {
3032 if (!PagePrivate(page))
3033 return;
3034
3035 set_page_private(page, 0);
3036 ClearPagePrivate(page);
3037 f2fs_put_page(page, 0);
3038 }
3039
3040 /*
3041 * file.c
3042 */
3043 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
3044 void f2fs_truncate_data_blocks(struct dnode_of_data *dn);
3045 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock);
3046 int f2fs_truncate(struct inode *inode);
3047 int f2fs_getattr(const struct path *path, struct kstat *stat,
3048 u32 request_mask, unsigned int flags);
3049 int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
3050 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
3051 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count);
3052 int f2fs_precache_extents(struct inode *inode);
3053 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
3054 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
3055 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid);
3056 int f2fs_pin_file_control(struct inode *inode, bool inc);
3057
3058 /*
3059 * inode.c
3060 */
3061 void f2fs_set_inode_flags(struct inode *inode);
3062 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page);
3063 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page);
3064 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
3065 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
3066 int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
3067 void f2fs_update_inode(struct inode *inode, struct page *node_page);
3068 void f2fs_update_inode_page(struct inode *inode);
3069 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
3070 void f2fs_evict_inode(struct inode *inode);
3071 void f2fs_handle_failed_inode(struct inode *inode);
3072
3073 /*
3074 * namei.c
3075 */
3076 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
3077 bool hot, bool set);
3078 struct dentry *f2fs_get_parent(struct dentry *child);
3079
3080 extern int f2fs_ci_compare(const struct inode *parent,
3081 const struct qstr *name,
3082 const struct qstr *entry,
3083 bool quick);
3084
3085 /*
3086 * dir.c
3087 */
3088 unsigned char f2fs_get_de_type(struct f2fs_dir_entry *de);
3089 struct f2fs_dir_entry *f2fs_find_target_dentry(struct fscrypt_name *fname,
3090 f2fs_hash_t namehash, int *max_slots,
3091 struct f2fs_dentry_ptr *d);
3092 int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
3093 unsigned int start_pos, struct fscrypt_str *fstr);
3094 void f2fs_do_make_empty_dir(struct inode *inode, struct inode *parent,
3095 struct f2fs_dentry_ptr *d);
3096 struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir,
3097 const struct qstr *new_name,
3098 const struct qstr *orig_name, struct page *dpage);
3099 void f2fs_update_parent_metadata(struct inode *dir, struct inode *inode,
3100 unsigned int current_depth);
3101 int f2fs_room_for_filename(const void *bitmap, int slots, int max_slots);
3102 void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
3103 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
3104 struct fscrypt_name *fname, struct page **res_page);
3105 struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
3106 const struct qstr *child, struct page **res_page);
3107 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
3108 ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
3109 struct page **page);
3110 void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
3111 struct page *page, struct inode *inode);
3112 bool f2fs_has_enough_room(struct inode *dir, struct page *ipage,
3113 struct fscrypt_name *fname);
3114 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
3115 const struct qstr *name, f2fs_hash_t name_hash,
3116 unsigned int bit_pos);
3117 int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
3118 const struct qstr *orig_name,
3119 struct inode *inode, nid_t ino, umode_t mode);
3120 int f2fs_add_dentry(struct inode *dir, struct fscrypt_name *fname,
3121 struct inode *inode, nid_t ino, umode_t mode);
3122 int f2fs_do_add_link(struct inode *dir, const struct qstr *name,
3123 struct inode *inode, nid_t ino, umode_t mode);
3124 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
3125 struct inode *dir, struct inode *inode);
3126 int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
3127 bool f2fs_empty_dir(struct inode *dir);
3128
3129 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
3130 {
3131 return f2fs_do_add_link(d_inode(dentry->d_parent), &dentry->d_name,
3132 inode, inode->i_ino, inode->i_mode);
3133 }
3134
3135 /*
3136 * super.c
3137 */
3138 int f2fs_inode_dirtied(struct inode *inode, bool sync);
3139 void f2fs_inode_synced(struct inode *inode);
3140 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
3141 int f2fs_quota_sync(struct super_block *sb, int type);
3142 void f2fs_quota_off_umount(struct super_block *sb);
3143 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
3144 int f2fs_sync_fs(struct super_block *sb, int sync);
3145 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi);
3146
3147 /*
3148 * hash.c
3149 */
3150 f2fs_hash_t f2fs_dentry_hash(const struct inode *dir,
3151 const struct qstr *name_info, struct fscrypt_name *fname);
3152
3153 /*
3154 * node.c
3155 */
3156 struct dnode_of_data;
3157 struct node_info;
3158
3159 int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid);
3160 bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type);
3161 bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page);
3162 void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi);
3163 void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page);
3164 void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi);
3165 int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
3166 bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
3167 bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
3168 int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid,
3169 struct node_info *ni);
3170 pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
3171 int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
3172 int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from);
3173 int f2fs_truncate_xattr_node(struct inode *inode);
3174 int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
3175 unsigned int seq_id);
3176 int f2fs_remove_inode_page(struct inode *inode);
3177 struct page *f2fs_new_inode_page(struct inode *inode);
3178 struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs);
3179 void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
3180 struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
3181 struct page *f2fs_get_node_page_ra(struct page *parent, int start);
3182 int f2fs_move_node_page(struct page *node_page, int gc_type);
3183 int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
3184 struct writeback_control *wbc, bool atomic,
3185 unsigned int *seq_id);
3186 int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
3187 struct writeback_control *wbc,
3188 bool do_balance, enum iostat_type io_type);
3189 int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
3190 bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
3191 void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
3192 void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
3193 int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
3194 void f2fs_recover_inline_xattr(struct inode *inode, struct page *page);
3195 int f2fs_recover_xattr_data(struct inode *inode, struct page *page);
3196 int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
3197 int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
3198 unsigned int segno, struct f2fs_summary_block *sum);
3199 int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3200 int f2fs_build_node_manager(struct f2fs_sb_info *sbi);
3201 void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi);
3202 int __init f2fs_create_node_manager_caches(void);
3203 void f2fs_destroy_node_manager_caches(void);
3204
3205 /*
3206 * segment.c
3207 */
3208 bool f2fs_need_SSR(struct f2fs_sb_info *sbi);
3209 void f2fs_register_inmem_page(struct inode *inode, struct page *page);
3210 void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure);
3211 void f2fs_drop_inmem_pages(struct inode *inode);
3212 void f2fs_drop_inmem_page(struct inode *inode, struct page *page);
3213 int f2fs_commit_inmem_pages(struct inode *inode);
3214 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
3215 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi);
3216 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
3217 int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi);
3218 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
3219 void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
3220 void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
3221 bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
3222 void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi);
3223 void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi);
3224 bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi);
3225 void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
3226 struct cp_control *cpc);
3227 void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi);
3228 block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi);
3229 int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable);
3230 void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi);
3231 int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
3232 void allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
3233 unsigned int start, unsigned int end);
3234 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi, int type);
3235 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
3236 bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
3237 struct cp_control *cpc);
3238 struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
3239 void f2fs_update_meta_page(struct f2fs_sb_info *sbi, void *src,
3240 block_t blk_addr);
3241 void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
3242 enum iostat_type io_type);
3243 void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio);
3244 void f2fs_outplace_write_data(struct dnode_of_data *dn,
3245 struct f2fs_io_info *fio);
3246 int f2fs_inplace_write_data(struct f2fs_io_info *fio);
3247 void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
3248 block_t old_blkaddr, block_t new_blkaddr,
3249 bool recover_curseg, bool recover_newaddr);
3250 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
3251 block_t old_addr, block_t new_addr,
3252 unsigned char version, bool recover_curseg,
3253 bool recover_newaddr);
3254 void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
3255 block_t old_blkaddr, block_t *new_blkaddr,
3256 struct f2fs_summary *sum, int type,
3257 struct f2fs_io_info *fio, bool add_list);
3258 void f2fs_wait_on_page_writeback(struct page *page,
3259 enum page_type type, bool ordered, bool locked);
3260 void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr);
3261 void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
3262 block_t len);
3263 void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
3264 void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
3265 int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
3266 unsigned int val, int alloc);
3267 void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3268 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi);
3269 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi);
3270 int f2fs_build_segment_manager(struct f2fs_sb_info *sbi);
3271 void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi);
3272 int __init f2fs_create_segment_manager_caches(void);
3273 void f2fs_destroy_segment_manager_caches(void);
3274 int f2fs_rw_hint_to_seg_type(enum rw_hint hint);
3275 enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
3276 enum page_type type, enum temp_type temp);
3277
3278 /*
3279 * checkpoint.c
3280 */
3281 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
3282 struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
3283 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
3284 struct page *f2fs_get_meta_page_nofail(struct f2fs_sb_info *sbi, pgoff_t index);
3285 struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
3286 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
3287 block_t blkaddr, int type);
3288 int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
3289 int type, bool sync);
3290 void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
3291 long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
3292 long nr_to_write, enum iostat_type io_type);
3293 void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
3294 void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
3295 void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all);
3296 bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
3297 void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
3298 unsigned int devidx, int type);
3299 bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
3300 unsigned int devidx, int type);
3301 int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
3302 int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi);
3303 void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi);
3304 void f2fs_add_orphan_inode(struct inode *inode);
3305 void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
3306 int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi);
3307 int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi);
3308 void f2fs_update_dirty_page(struct inode *inode, struct page *page);
3309 void f2fs_remove_dirty_inode(struct inode *inode);
3310 int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
3311 void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type);
3312 int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3313 void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi);
3314 int __init f2fs_create_checkpoint_caches(void);
3315 void f2fs_destroy_checkpoint_caches(void);
3316
3317 /*
3318 * data.c
3319 */
3320 int __init f2fs_init_bioset(void);
3321 void f2fs_destroy_bioset(void);
3322 struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi, int npages, bool no_fail);
3323 int f2fs_init_bio_entry_cache(void);
3324 void f2fs_destroy_bio_entry_cache(void);
3325 void f2fs_submit_bio(struct f2fs_sb_info *sbi,
3326 struct bio *bio, enum page_type type);
3327 void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
3328 void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
3329 struct inode *inode, struct page *page,
3330 nid_t ino, enum page_type type);
3331 void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi,
3332 struct bio **bio, struct page *page);
3333 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
3334 int f2fs_submit_page_bio(struct f2fs_io_info *fio);
3335 int f2fs_merge_page_bio(struct f2fs_io_info *fio);
3336 void f2fs_submit_page_write(struct f2fs_io_info *fio);
3337 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
3338 block_t blk_addr, struct bio *bio);
3339 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
3340 void f2fs_set_data_blkaddr(struct dnode_of_data *dn);
3341 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
3342 int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
3343 int f2fs_reserve_new_block(struct dnode_of_data *dn);
3344 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
3345 int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
3346 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
3347 int f2fs_mpage_readpages(struct address_space *mapping,
3348 struct list_head *pages, struct page *page,
3349 unsigned nr_pages, bool is_readahead);
3350 struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
3351 int op_flags, bool for_write);
3352 struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index);
3353 struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
3354 bool for_write);
3355 struct page *f2fs_get_new_data_page(struct inode *inode,
3356 struct page *ipage, pgoff_t index, bool new_i_size);
3357 int f2fs_do_write_data_page(struct f2fs_io_info *fio);
3358 void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock);
3359 int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
3360 int create, int flag);
3361 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
3362 u64 start, u64 len);
3363 int f2fs_encrypt_one_page(struct f2fs_io_info *fio);
3364 bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio);
3365 bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio);
3366 int f2fs_write_single_data_page(struct page *page, int *submitted,
3367 struct bio **bio, sector_t *last_block,
3368 struct writeback_control *wbc,
3369 enum iostat_type io_type,
3370 int compr_blocks);
3371 void f2fs_invalidate_page(struct page *page, unsigned int offset,
3372 unsigned int length);
3373 int f2fs_release_page(struct page *page, gfp_t wait);
3374 #ifdef CONFIG_MIGRATION
3375 int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
3376 struct page *page, enum migrate_mode mode);
3377 #endif
3378 bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len);
3379 void f2fs_clear_page_cache_dirty_tag(struct page *page);
3380 int f2fs_init_post_read_processing(void);
3381 void f2fs_destroy_post_read_processing(void);
3382 int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi);
3383 void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi);
3384
3385 /*
3386 * gc.c
3387 */
3388 int f2fs_start_gc_thread(struct f2fs_sb_info *sbi);
3389 void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi);
3390 block_t f2fs_start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
3391 int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
3392 unsigned int segno);
3393 void f2fs_build_gc_manager(struct f2fs_sb_info *sbi);
3394 int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count);
3395
3396 /*
3397 * recovery.c
3398 */
3399 int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
3400 bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi);
3401
3402 /*
3403 * debug.c
3404 */
3405 #ifdef CONFIG_F2FS_STAT_FS
3406 struct f2fs_stat_info {
3407 struct list_head stat_list;
3408 struct f2fs_sb_info *sbi;
3409 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
3410 int main_area_segs, main_area_sections, main_area_zones;
3411 unsigned long long hit_largest, hit_cached, hit_rbtree;
3412 unsigned long long hit_total, total_ext;
3413 int ext_tree, zombie_tree, ext_node;
3414 int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
3415 int ndirty_data, ndirty_qdata;
3416 int inmem_pages;
3417 unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
3418 int nats, dirty_nats, sits, dirty_sits;
3419 int free_nids, avail_nids, alloc_nids;
3420 int total_count, utilization;
3421 int bg_gc, nr_wb_cp_data, nr_wb_data;
3422 int nr_rd_data, nr_rd_node, nr_rd_meta;
3423 int nr_dio_read, nr_dio_write;
3424 unsigned int io_skip_bggc, other_skip_bggc;
3425 int nr_flushing, nr_flushed, flush_list_empty;
3426 int nr_discarding, nr_discarded;
3427 int nr_discard_cmd;
3428 unsigned int undiscard_blks;
3429 int inline_xattr, inline_inode, inline_dir, append, update, orphans;
3430 int compr_inode, compr_blocks;
3431 int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
3432 unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
3433 unsigned int bimodal, avg_vblocks;
3434 int util_free, util_valid, util_invalid;
3435 int rsvd_segs, overp_segs;
3436 int dirty_count, node_pages, meta_pages;
3437 int prefree_count, call_count, cp_count, bg_cp_count;
3438 int tot_segs, node_segs, data_segs, free_segs, free_secs;
3439 int bg_node_segs, bg_data_segs;
3440 int tot_blks, data_blks, node_blks;
3441 int bg_data_blks, bg_node_blks;
3442 unsigned long long skipped_atomic_files[2];
3443 int curseg[NR_CURSEG_TYPE];
3444 int cursec[NR_CURSEG_TYPE];
3445 int curzone[NR_CURSEG_TYPE];
3446
3447 unsigned int meta_count[META_MAX];
3448 unsigned int segment_count[2];
3449 unsigned int block_count[2];
3450 unsigned int inplace_count;
3451 unsigned long long base_mem, cache_mem, page_mem;
3452 };
3453
3454 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
3455 {
3456 return (struct f2fs_stat_info *)sbi->stat_info;
3457 }
3458
3459 #define stat_inc_cp_count(si) ((si)->cp_count++)
3460 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
3461 #define stat_inc_call_count(si) ((si)->call_count++)
3462 #define stat_inc_bggc_count(si) ((si)->bg_gc++)
3463 #define stat_io_skip_bggc_count(sbi) ((sbi)->io_skip_bggc++)
3464 #define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++)
3465 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
3466 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
3467 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
3468 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
3469 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
3470 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
3471 #define stat_inc_inline_xattr(inode) \
3472 do { \
3473 if (f2fs_has_inline_xattr(inode)) \
3474 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
3475 } while (0)
3476 #define stat_dec_inline_xattr(inode) \
3477 do { \
3478 if (f2fs_has_inline_xattr(inode)) \
3479 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
3480 } while (0)
3481 #define stat_inc_inline_inode(inode) \
3482 do { \
3483 if (f2fs_has_inline_data(inode)) \
3484 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
3485 } while (0)
3486 #define stat_dec_inline_inode(inode) \
3487 do { \
3488 if (f2fs_has_inline_data(inode)) \
3489 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
3490 } while (0)
3491 #define stat_inc_inline_dir(inode) \
3492 do { \
3493 if (f2fs_has_inline_dentry(inode)) \
3494 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
3495 } while (0)
3496 #define stat_dec_inline_dir(inode) \
3497 do { \
3498 if (f2fs_has_inline_dentry(inode)) \
3499 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
3500 } while (0)
3501 #define stat_inc_compr_inode(inode) \
3502 do { \
3503 if (f2fs_compressed_file(inode)) \
3504 (atomic_inc(&F2FS_I_SB(inode)->compr_inode)); \
3505 } while (0)
3506 #define stat_dec_compr_inode(inode) \
3507 do { \
3508 if (f2fs_compressed_file(inode)) \
3509 (atomic_dec(&F2FS_I_SB(inode)->compr_inode)); \
3510 } while (0)
3511 #define stat_add_compr_blocks(inode, blocks) \
3512 (atomic_add(blocks, &F2FS_I_SB(inode)->compr_blocks))
3513 #define stat_sub_compr_blocks(inode, blocks) \
3514 (atomic_sub(blocks, &F2FS_I_SB(inode)->compr_blocks))
3515 #define stat_inc_meta_count(sbi, blkaddr) \
3516 do { \
3517 if (blkaddr < SIT_I(sbi)->sit_base_addr) \
3518 atomic_inc(&(sbi)->meta_count[META_CP]); \
3519 else if (blkaddr < NM_I(sbi)->nat_blkaddr) \
3520 atomic_inc(&(sbi)->meta_count[META_SIT]); \
3521 else if (blkaddr < SM_I(sbi)->ssa_blkaddr) \
3522 atomic_inc(&(sbi)->meta_count[META_NAT]); \
3523 else if (blkaddr < SM_I(sbi)->main_blkaddr) \
3524 atomic_inc(&(sbi)->meta_count[META_SSA]); \
3525 } while (0)
3526 #define stat_inc_seg_type(sbi, curseg) \
3527 ((sbi)->segment_count[(curseg)->alloc_type]++)
3528 #define stat_inc_block_count(sbi, curseg) \
3529 ((sbi)->block_count[(curseg)->alloc_type]++)
3530 #define stat_inc_inplace_blocks(sbi) \
3531 (atomic_inc(&(sbi)->inplace_count))
3532 #define stat_update_max_atomic_write(inode) \
3533 do { \
3534 int cur = F2FS_I_SB(inode)->atomic_files; \
3535 int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \
3536 if (cur > max) \
3537 atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
3538 } while (0)
3539 #define stat_inc_volatile_write(inode) \
3540 (atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
3541 #define stat_dec_volatile_write(inode) \
3542 (atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
3543 #define stat_update_max_volatile_write(inode) \
3544 do { \
3545 int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \
3546 int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \
3547 if (cur > max) \
3548 atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \
3549 } while (0)
3550 #define stat_inc_seg_count(sbi, type, gc_type) \
3551 do { \
3552 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3553 si->tot_segs++; \
3554 if ((type) == SUM_TYPE_DATA) { \
3555 si->data_segs++; \
3556 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
3557 } else { \
3558 si->node_segs++; \
3559 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
3560 } \
3561 } while (0)
3562
3563 #define stat_inc_tot_blk_count(si, blks) \
3564 ((si)->tot_blks += (blks))
3565
3566 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
3567 do { \
3568 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3569 stat_inc_tot_blk_count(si, blks); \
3570 si->data_blks += (blks); \
3571 si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
3572 } while (0)
3573
3574 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
3575 do { \
3576 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3577 stat_inc_tot_blk_count(si, blks); \
3578 si->node_blks += (blks); \
3579 si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
3580 } while (0)
3581
3582 int f2fs_build_stats(struct f2fs_sb_info *sbi);
3583 void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
3584 void __init f2fs_create_root_stats(void);
3585 void f2fs_destroy_root_stats(void);
3586 void f2fs_update_sit_info(struct f2fs_sb_info *sbi);
3587 #else
3588 #define stat_inc_cp_count(si) do { } while (0)
3589 #define stat_inc_bg_cp_count(si) do { } while (0)
3590 #define stat_inc_call_count(si) do { } while (0)
3591 #define stat_inc_bggc_count(si) do { } while (0)
3592 #define stat_io_skip_bggc_count(sbi) do { } while (0)
3593 #define stat_other_skip_bggc_count(sbi) do { } while (0)
3594 #define stat_inc_dirty_inode(sbi, type) do { } while (0)
3595 #define stat_dec_dirty_inode(sbi, type) do { } while (0)
3596 #define stat_inc_total_hit(sbi) do { } while (0)
3597 #define stat_inc_rbtree_node_hit(sbi) do { } while (0)
3598 #define stat_inc_largest_node_hit(sbi) do { } while (0)
3599 #define stat_inc_cached_node_hit(sbi) do { } while (0)
3600 #define stat_inc_inline_xattr(inode) do { } while (0)
3601 #define stat_dec_inline_xattr(inode) do { } while (0)
3602 #define stat_inc_inline_inode(inode) do { } while (0)
3603 #define stat_dec_inline_inode(inode) do { } while (0)
3604 #define stat_inc_inline_dir(inode) do { } while (0)
3605 #define stat_dec_inline_dir(inode) do { } while (0)
3606 #define stat_inc_compr_inode(inode) do { } while (0)
3607 #define stat_dec_compr_inode(inode) do { } while (0)
3608 #define stat_add_compr_blocks(inode, blocks) do { } while (0)
3609 #define stat_sub_compr_blocks(inode, blocks) do { } while (0)
3610 #define stat_inc_atomic_write(inode) do { } while (0)
3611 #define stat_dec_atomic_write(inode) do { } while (0)
3612 #define stat_update_max_atomic_write(inode) do { } while (0)
3613 #define stat_inc_volatile_write(inode) do { } while (0)
3614 #define stat_dec_volatile_write(inode) do { } while (0)
3615 #define stat_update_max_volatile_write(inode) do { } while (0)
3616 #define stat_inc_meta_count(sbi, blkaddr) do { } while (0)
3617 #define stat_inc_seg_type(sbi, curseg) do { } while (0)
3618 #define stat_inc_block_count(sbi, curseg) do { } while (0)
3619 #define stat_inc_inplace_blocks(sbi) do { } while (0)
3620 #define stat_inc_seg_count(sbi, type, gc_type) do { } while (0)
3621 #define stat_inc_tot_blk_count(si, blks) do { } while (0)
3622 #define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0)
3623 #define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0)
3624
3625 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
3626 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
3627 static inline void __init f2fs_create_root_stats(void) { }
3628 static inline void f2fs_destroy_root_stats(void) { }
3629 static inline void update_sit_info(struct f2fs_sb_info *sbi) {}
3630 #endif
3631
3632 extern const struct file_operations f2fs_dir_operations;
3633 #ifdef CONFIG_UNICODE
3634 extern const struct dentry_operations f2fs_dentry_ops;
3635 #endif
3636 extern const struct file_operations f2fs_file_operations;
3637 extern const struct inode_operations f2fs_file_inode_operations;
3638 extern const struct address_space_operations f2fs_dblock_aops;
3639 extern const struct address_space_operations f2fs_node_aops;
3640 extern const struct address_space_operations f2fs_meta_aops;
3641 extern const struct inode_operations f2fs_dir_inode_operations;
3642 extern const struct inode_operations f2fs_symlink_inode_operations;
3643 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
3644 extern const struct inode_operations f2fs_special_inode_operations;
3645 extern struct kmem_cache *f2fs_inode_entry_slab;
3646
3647 /*
3648 * inline.c
3649 */
3650 bool f2fs_may_inline_data(struct inode *inode);
3651 bool f2fs_may_inline_dentry(struct inode *inode);
3652 void f2fs_do_read_inline_data(struct page *page, struct page *ipage);
3653 void f2fs_truncate_inline_inode(struct inode *inode,
3654 struct page *ipage, u64 from);
3655 int f2fs_read_inline_data(struct inode *inode, struct page *page);
3656 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
3657 int f2fs_convert_inline_inode(struct inode *inode);
3658 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry);
3659 int f2fs_write_inline_data(struct inode *inode, struct page *page);
3660 bool f2fs_recover_inline_data(struct inode *inode, struct page *npage);
3661 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
3662 struct fscrypt_name *fname, struct page **res_page);
3663 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
3664 struct page *ipage);
3665 int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
3666 const struct qstr *orig_name,
3667 struct inode *inode, nid_t ino, umode_t mode);
3668 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry,
3669 struct page *page, struct inode *dir,
3670 struct inode *inode);
3671 bool f2fs_empty_inline_dir(struct inode *dir);
3672 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
3673 struct fscrypt_str *fstr);
3674 int f2fs_inline_data_fiemap(struct inode *inode,
3675 struct fiemap_extent_info *fieinfo,
3676 __u64 start, __u64 len);
3677
3678 /*
3679 * shrinker.c
3680 */
3681 unsigned long f2fs_shrink_count(struct shrinker *shrink,
3682 struct shrink_control *sc);
3683 unsigned long f2fs_shrink_scan(struct shrinker *shrink,
3684 struct shrink_control *sc);
3685 void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
3686 void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
3687
3688 /*
3689 * extent_cache.c
3690 */
3691 struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root,
3692 struct rb_entry *cached_re, unsigned int ofs);
3693 struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
3694 struct rb_root_cached *root,
3695 struct rb_node **parent,
3696 unsigned int ofs, bool *leftmost);
3697 struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root,
3698 struct rb_entry *cached_re, unsigned int ofs,
3699 struct rb_entry **prev_entry, struct rb_entry **next_entry,
3700 struct rb_node ***insert_p, struct rb_node **insert_parent,
3701 bool force, bool *leftmost);
3702 bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
3703 struct rb_root_cached *root);
3704 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
3705 bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext);
3706 void f2fs_drop_extent_tree(struct inode *inode);
3707 unsigned int f2fs_destroy_extent_node(struct inode *inode);
3708 void f2fs_destroy_extent_tree(struct inode *inode);
3709 bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
3710 struct extent_info *ei);
3711 void f2fs_update_extent_cache(struct dnode_of_data *dn);
3712 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
3713 pgoff_t fofs, block_t blkaddr, unsigned int len);
3714 void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi);
3715 int __init f2fs_create_extent_cache(void);
3716 void f2fs_destroy_extent_cache(void);
3717
3718 /*
3719 * sysfs.c
3720 */
3721 int __init f2fs_init_sysfs(void);
3722 void f2fs_exit_sysfs(void);
3723 int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
3724 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
3725
3726 /* verity.c */
3727 extern const struct fsverity_operations f2fs_verityops;
3728
3729 /*
3730 * crypto support
3731 */
3732 static inline bool f2fs_encrypted_file(struct inode *inode)
3733 {
3734 return IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode);
3735 }
3736
3737 static inline void f2fs_set_encrypted_inode(struct inode *inode)
3738 {
3739 #ifdef CONFIG_FS_ENCRYPTION
3740 file_set_encrypt(inode);
3741 f2fs_set_inode_flags(inode);
3742 #endif
3743 }
3744
3745 /*
3746 * Returns true if the reads of the inode's data need to undergo some
3747 * postprocessing step, like decryption or authenticity verification.
3748 */
3749 static inline bool f2fs_post_read_required(struct inode *inode)
3750 {
3751 return f2fs_encrypted_file(inode) || fsverity_active(inode) ||
3752 f2fs_compressed_file(inode);
3753 }
3754
3755 /*
3756 * compress.c
3757 */
3758 #ifdef CONFIG_F2FS_FS_COMPRESSION
3759 bool f2fs_is_compressed_page(struct page *page);
3760 struct page *f2fs_compress_control_page(struct page *page);
3761 int f2fs_prepare_compress_overwrite(struct inode *inode,
3762 struct page **pagep, pgoff_t index, void **fsdata);
3763 bool f2fs_compress_write_end(struct inode *inode, void *fsdata,
3764 pgoff_t index, unsigned copied);
3765 void f2fs_compress_write_end_io(struct bio *bio, struct page *page);
3766 bool f2fs_is_compress_backend_ready(struct inode *inode);
3767 void f2fs_decompress_pages(struct bio *bio, struct page *page, bool verity);
3768 bool f2fs_cluster_is_empty(struct compress_ctx *cc);
3769 bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index);
3770 void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page);
3771 int f2fs_write_multi_pages(struct compress_ctx *cc,
3772 int *submitted,
3773 struct writeback_control *wbc,
3774 enum iostat_type io_type);
3775 int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index);
3776 int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
3777 unsigned nr_pages, sector_t *last_block_in_bio,
3778 bool is_readahead);
3779 struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc);
3780 void f2fs_free_dic(struct decompress_io_ctx *dic);
3781 void f2fs_decompress_end_io(struct page **rpages,
3782 unsigned int cluster_size, bool err, bool verity);
3783 int f2fs_init_compress_ctx(struct compress_ctx *cc);
3784 void f2fs_destroy_compress_ctx(struct compress_ctx *cc);
3785 void f2fs_init_compress_info(struct f2fs_sb_info *sbi);
3786 #else
3787 static inline bool f2fs_is_compressed_page(struct page *page) { return false; }
3788 static inline bool f2fs_is_compress_backend_ready(struct inode *inode)
3789 {
3790 if (!f2fs_compressed_file(inode))
3791 return true;
3792 /* not support compression */
3793 return false;
3794 }
3795 static inline struct page *f2fs_compress_control_page(struct page *page)
3796 {
3797 WARN_ON_ONCE(1);
3798 return ERR_PTR(-EINVAL);
3799 }
3800 #endif
3801
3802 static inline void set_compress_context(struct inode *inode)
3803 {
3804 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3805
3806 F2FS_I(inode)->i_compress_algorithm =
3807 F2FS_OPTION(sbi).compress_algorithm;
3808 F2FS_I(inode)->i_log_cluster_size =
3809 F2FS_OPTION(sbi).compress_log_size;
3810 F2FS_I(inode)->i_cluster_size =
3811 1 << F2FS_I(inode)->i_log_cluster_size;
3812 F2FS_I(inode)->i_flags |= F2FS_COMPR_FL;
3813 set_inode_flag(inode, FI_COMPRESSED_FILE);
3814 stat_inc_compr_inode(inode);
3815 }
3816
3817 static inline u64 f2fs_disable_compressed_file(struct inode *inode)
3818 {
3819 struct f2fs_inode_info *fi = F2FS_I(inode);
3820
3821 if (!f2fs_compressed_file(inode))
3822 return 0;
3823 if (fi->i_compr_blocks)
3824 return fi->i_compr_blocks;
3825
3826 fi->i_flags &= ~F2FS_COMPR_FL;
3827 clear_inode_flag(inode, FI_COMPRESSED_FILE);
3828 stat_dec_compr_inode(inode);
3829 return 0;
3830 }
3831
3832 #define F2FS_FEATURE_FUNCS(name, flagname) \
3833 static inline int f2fs_sb_has_##name(struct f2fs_sb_info *sbi) \
3834 { \
3835 return F2FS_HAS_FEATURE(sbi, F2FS_FEATURE_##flagname); \
3836 }
3837
3838 F2FS_FEATURE_FUNCS(encrypt, ENCRYPT);
3839 F2FS_FEATURE_FUNCS(blkzoned, BLKZONED);
3840 F2FS_FEATURE_FUNCS(extra_attr, EXTRA_ATTR);
3841 F2FS_FEATURE_FUNCS(project_quota, PRJQUOTA);
3842 F2FS_FEATURE_FUNCS(inode_chksum, INODE_CHKSUM);
3843 F2FS_FEATURE_FUNCS(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
3844 F2FS_FEATURE_FUNCS(quota_ino, QUOTA_INO);
3845 F2FS_FEATURE_FUNCS(inode_crtime, INODE_CRTIME);
3846 F2FS_FEATURE_FUNCS(lost_found, LOST_FOUND);
3847 F2FS_FEATURE_FUNCS(verity, VERITY);
3848 F2FS_FEATURE_FUNCS(sb_chksum, SB_CHKSUM);
3849 F2FS_FEATURE_FUNCS(casefold, CASEFOLD);
3850 F2FS_FEATURE_FUNCS(compression, COMPRESSION);
3851
3852 #ifdef CONFIG_BLK_DEV_ZONED
3853 static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi,
3854 block_t blkaddr)
3855 {
3856 unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
3857
3858 return test_bit(zno, FDEV(devi).blkz_seq);
3859 }
3860 #endif
3861
3862 static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi)
3863 {
3864 return f2fs_sb_has_blkzoned(sbi);
3865 }
3866
3867 static inline bool f2fs_bdev_support_discard(struct block_device *bdev)
3868 {
3869 return blk_queue_discard(bdev_get_queue(bdev)) ||
3870 bdev_is_zoned(bdev);
3871 }
3872
3873 static inline bool f2fs_hw_support_discard(struct f2fs_sb_info *sbi)
3874 {
3875 int i;
3876
3877 if (!f2fs_is_multi_device(sbi))
3878 return f2fs_bdev_support_discard(sbi->sb->s_bdev);
3879
3880 for (i = 0; i < sbi->s_ndevs; i++)
3881 if (f2fs_bdev_support_discard(FDEV(i).bdev))
3882 return true;
3883 return false;
3884 }
3885
3886 static inline bool f2fs_realtime_discard_enable(struct f2fs_sb_info *sbi)
3887 {
3888 return (test_opt(sbi, DISCARD) && f2fs_hw_support_discard(sbi)) ||
3889 f2fs_hw_should_discard(sbi);
3890 }
3891
3892 static inline bool f2fs_hw_is_readonly(struct f2fs_sb_info *sbi)
3893 {
3894 int i;
3895
3896 if (!f2fs_is_multi_device(sbi))
3897 return bdev_read_only(sbi->sb->s_bdev);
3898
3899 for (i = 0; i < sbi->s_ndevs; i++)
3900 if (bdev_read_only(FDEV(i).bdev))
3901 return true;
3902 return false;
3903 }
3904
3905
3906 static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
3907 {
3908 clear_opt(sbi, ADAPTIVE);
3909 clear_opt(sbi, LFS);
3910
3911 switch (mt) {
3912 case F2FS_MOUNT_ADAPTIVE:
3913 set_opt(sbi, ADAPTIVE);
3914 break;
3915 case F2FS_MOUNT_LFS:
3916 set_opt(sbi, LFS);
3917 break;
3918 }
3919 }
3920
3921 static inline bool f2fs_may_encrypt(struct inode *inode)
3922 {
3923 #ifdef CONFIG_FS_ENCRYPTION
3924 umode_t mode = inode->i_mode;
3925
3926 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
3927 #else
3928 return false;
3929 #endif
3930 }
3931
3932 static inline bool f2fs_may_compress(struct inode *inode)
3933 {
3934 if (IS_SWAPFILE(inode) || f2fs_is_pinned_file(inode) ||
3935 f2fs_is_atomic_file(inode) ||
3936 f2fs_is_volatile_file(inode))
3937 return false;
3938 return S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode);
3939 }
3940
3941 static inline void f2fs_i_compr_blocks_update(struct inode *inode,
3942 u64 blocks, bool add)
3943 {
3944 int diff = F2FS_I(inode)->i_cluster_size - blocks;
3945
3946 if (add) {
3947 F2FS_I(inode)->i_compr_blocks += diff;
3948 stat_add_compr_blocks(inode, diff);
3949 } else {
3950 F2FS_I(inode)->i_compr_blocks -= diff;
3951 stat_sub_compr_blocks(inode, diff);
3952 }
3953 f2fs_mark_inode_dirty_sync(inode, true);
3954 }
3955
3956 static inline int block_unaligned_IO(struct inode *inode,
3957 struct kiocb *iocb, struct iov_iter *iter)
3958 {
3959 unsigned int i_blkbits = READ_ONCE(inode->i_blkbits);
3960 unsigned int blocksize_mask = (1 << i_blkbits) - 1;
3961 loff_t offset = iocb->ki_pos;
3962 unsigned long align = offset | iov_iter_alignment(iter);
3963
3964 return align & blocksize_mask;
3965 }
3966
3967 static inline int allow_outplace_dio(struct inode *inode,
3968 struct kiocb *iocb, struct iov_iter *iter)
3969 {
3970 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3971 int rw = iov_iter_rw(iter);
3972
3973 return (test_opt(sbi, LFS) && (rw == WRITE) &&
3974 !block_unaligned_IO(inode, iocb, iter));
3975 }
3976
3977 static inline bool f2fs_force_buffered_io(struct inode *inode,
3978 struct kiocb *iocb, struct iov_iter *iter)
3979 {
3980 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3981 int rw = iov_iter_rw(iter);
3982
3983 if (f2fs_post_read_required(inode))
3984 return true;
3985 if (f2fs_is_multi_device(sbi))
3986 return true;
3987 if (f2fs_compressed_file(inode))
3988 return true;
3989 /*
3990 * for blkzoned device, fallback direct IO to buffered IO, so
3991 * all IOs can be serialized by log-structured write.
3992 */
3993 if (f2fs_sb_has_blkzoned(sbi))
3994 return true;
3995 if (test_opt(sbi, LFS) && (rw == WRITE)) {
3996 if (block_unaligned_IO(inode, iocb, iter))
3997 return true;
3998 if (F2FS_IO_ALIGNED(sbi))
3999 return true;
4000 }
4001 if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED) &&
4002 !IS_SWAPFILE(inode))
4003 return true;
4004
4005 return false;
4006 }
4007
4008 #ifdef CONFIG_F2FS_FAULT_INJECTION
4009 extern void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
4010 unsigned int type);
4011 #else
4012 #define f2fs_build_fault_attr(sbi, rate, type) do { } while (0)
4013 #endif
4014
4015 static inline bool is_journalled_quota(struct f2fs_sb_info *sbi)
4016 {
4017 #ifdef CONFIG_QUOTA
4018 if (f2fs_sb_has_quota_ino(sbi))
4019 return true;
4020 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
4021 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
4022 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4023 return true;
4024 #endif
4025 return false;
4026 }
4027
4028 #define EFSBADCRC EBADMSG /* Bad CRC detected */
4029 #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
4030
4031 #endif /* _LINUX_F2FS_H */
Linux with added FPC-III support