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Revert "tty: hvc: Fix data abort due to race in hvc_open"
[linux/fpc-iii.git] / fs / f2fs / f2fs.h
blob5a0f95dfbac2bfe1da05ef66f2c5bf5cf6e15c99
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 <linux/part_stat.h>
26 #include <crypto/hash.h>
27
28 #include <linux/fscrypt.h>
29 #include <linux/fsverity.h>
30
31 #ifdef CONFIG_F2FS_CHECK_FS
32 #define f2fs_bug_on(sbi, condition) BUG_ON(condition)
33 #else
34 #define f2fs_bug_on(sbi, condition) \
35 do { \
36 if (unlikely(condition)) { \
37 WARN_ON(1); \
38 set_sbi_flag(sbi, SBI_NEED_FSCK); \
39 } \
40 } while (0)
41 #endif
42
43 enum {
44 FAULT_KMALLOC,
45 FAULT_KVMALLOC,
46 FAULT_PAGE_ALLOC,
47 FAULT_PAGE_GET,
48 FAULT_ALLOC_BIO,
49 FAULT_ALLOC_NID,
50 FAULT_ORPHAN,
51 FAULT_BLOCK,
52 FAULT_DIR_DEPTH,
53 FAULT_EVICT_INODE,
54 FAULT_TRUNCATE,
55 FAULT_READ_IO,
56 FAULT_CHECKPOINT,
57 FAULT_DISCARD,
58 FAULT_WRITE_IO,
59 FAULT_MAX,
60 };
61
62 #ifdef CONFIG_F2FS_FAULT_INJECTION
63 #define F2FS_ALL_FAULT_TYPE ((1 << FAULT_MAX) - 1)
64
65 struct f2fs_fault_info {
66 atomic_t inject_ops;
67 unsigned int inject_rate;
68 unsigned int inject_type;
69 };
70
71 extern const char *f2fs_fault_name[FAULT_MAX];
72 #define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
73 #endif
74
75 /*
76 * For mount options
77 */
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_DATA_FLUSH 0x00008000
92 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000
93 #define F2FS_MOUNT_USRQUOTA 0x00080000
94 #define F2FS_MOUNT_GRPQUOTA 0x00100000
95 #define F2FS_MOUNT_PRJQUOTA 0x00200000
96 #define F2FS_MOUNT_QUOTA 0x00400000
97 #define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000
98 #define F2FS_MOUNT_RESERVE_ROOT 0x01000000
99 #define F2FS_MOUNT_DISABLE_CHECKPOINT 0x02000000
100 #define F2FS_MOUNT_NORECOVERY 0x04000000
101
102 #define F2FS_OPTION(sbi) ((sbi)->mount_opt)
103 #define clear_opt(sbi, option) (F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option)
104 #define set_opt(sbi, option) (F2FS_OPTION(sbi).opt |= F2FS_MOUNT_##option)
105 #define test_opt(sbi, option) (F2FS_OPTION(sbi).opt & F2FS_MOUNT_##option)
106
107 #define ver_after(a, b) (typecheck(unsigned long long, a) && \
108 typecheck(unsigned long long, b) && \
109 ((long long)((a) - (b)) > 0))
110
111 typedef u32 block_t; /*
112 * should not change u32, since it is the on-disk block
113 * address format, __le32.
114 */
115 typedef u32 nid_t;
116
117 #define COMPRESS_EXT_NUM 16
118
119 struct f2fs_mount_info {
120 unsigned int opt;
121 int write_io_size_bits; /* Write IO size bits */
122 block_t root_reserved_blocks; /* root reserved blocks */
123 kuid_t s_resuid; /* reserved blocks for uid */
124 kgid_t s_resgid; /* reserved blocks for gid */
125 int active_logs; /* # of active logs */
126 int inline_xattr_size; /* inline xattr size */
127 #ifdef CONFIG_F2FS_FAULT_INJECTION
128 struct f2fs_fault_info fault_info; /* For fault injection */
129 #endif
130 #ifdef CONFIG_QUOTA
131 /* Names of quota files with journalled quota */
132 char *s_qf_names[MAXQUOTAS];
133 int s_jquota_fmt; /* Format of quota to use */
134 #endif
135 /* For which write hints are passed down to block layer */
136 int whint_mode;
137 int alloc_mode; /* segment allocation policy */
138 int fsync_mode; /* fsync policy */
139 int fs_mode; /* fs mode: LFS or ADAPTIVE */
140 int bggc_mode; /* bggc mode: off, on or sync */
141 bool test_dummy_encryption; /* test dummy encryption */
142 block_t unusable_cap_perc; /* percentage for cap */
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 bool timeout; /* discard timeout for put_super */
336 unsigned int granularity; /* discard granularity */
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 #define F2FS_IOC_GET_COMPRESS_BLOCKS _IOR(F2FS_IOCTL_MAGIC, 17, __u64)
432
433 #define F2FS_IOC_GET_VOLUME_NAME FS_IOC_GETFSLABEL
434 #define F2FS_IOC_SET_VOLUME_NAME FS_IOC_SETFSLABEL
435
436 #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
437 #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
438 #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
439
440 /*
441 * should be same as XFS_IOC_GOINGDOWN.
442 * Flags for going down operation used by FS_IOC_GOINGDOWN
443 */
444 #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
445 #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
446 #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
447 #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
448 #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
449 #define F2FS_GOING_DOWN_NEED_FSCK 0x4 /* going down to trigger fsck */
450
451 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
452 /*
453 * ioctl commands in 32 bit emulation
454 */
455 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
456 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
457 #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
458 #endif
459
460 #define F2FS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
461 #define F2FS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
462
463 struct f2fs_gc_range {
464 u32 sync;
465 u64 start;
466 u64 len;
467 };
468
469 struct f2fs_defragment {
470 u64 start;
471 u64 len;
472 };
473
474 struct f2fs_move_range {
475 u32 dst_fd; /* destination fd */
476 u64 pos_in; /* start position in src_fd */
477 u64 pos_out; /* start position in dst_fd */
478 u64 len; /* size to move */
479 };
480
481 struct f2fs_flush_device {
482 u32 dev_num; /* device number to flush */
483 u32 segments; /* # of segments to flush */
484 };
485
486 /* for inline stuff */
487 #define DEF_INLINE_RESERVED_SIZE 1
488 static inline int get_extra_isize(struct inode *inode);
489 static inline int get_inline_xattr_addrs(struct inode *inode);
490 #define MAX_INLINE_DATA(inode) (sizeof(__le32) * \
491 (CUR_ADDRS_PER_INODE(inode) - \
492 get_inline_xattr_addrs(inode) - \
493 DEF_INLINE_RESERVED_SIZE))
494
495 /* for inline dir */
496 #define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
497 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
498 BITS_PER_BYTE + 1))
499 #define INLINE_DENTRY_BITMAP_SIZE(inode) \
500 DIV_ROUND_UP(NR_INLINE_DENTRY(inode), BITS_PER_BYTE)
501 #define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \
502 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
503 NR_INLINE_DENTRY(inode) + \
504 INLINE_DENTRY_BITMAP_SIZE(inode)))
505
506 /*
507 * For INODE and NODE manager
508 */
509 /* for directory operations */
510 struct f2fs_dentry_ptr {
511 struct inode *inode;
512 void *bitmap;
513 struct f2fs_dir_entry *dentry;
514 __u8 (*filename)[F2FS_SLOT_LEN];
515 int max;
516 int nr_bitmap;
517 };
518
519 static inline void make_dentry_ptr_block(struct inode *inode,
520 struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
521 {
522 d->inode = inode;
523 d->max = NR_DENTRY_IN_BLOCK;
524 d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
525 d->bitmap = t->dentry_bitmap;
526 d->dentry = t->dentry;
527 d->filename = t->filename;
528 }
529
530 static inline void make_dentry_ptr_inline(struct inode *inode,
531 struct f2fs_dentry_ptr *d, void *t)
532 {
533 int entry_cnt = NR_INLINE_DENTRY(inode);
534 int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
535 int reserved_size = INLINE_RESERVED_SIZE(inode);
536
537 d->inode = inode;
538 d->max = entry_cnt;
539 d->nr_bitmap = bitmap_size;
540 d->bitmap = t;
541 d->dentry = t + bitmap_size + reserved_size;
542 d->filename = t + bitmap_size + reserved_size +
543 SIZE_OF_DIR_ENTRY * entry_cnt;
544 }
545
546 /*
547 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
548 * as its node offset to distinguish from index node blocks.
549 * But some bits are used to mark the node block.
550 */
551 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
552 >> OFFSET_BIT_SHIFT)
553 enum {
554 ALLOC_NODE, /* allocate a new node page if needed */
555 LOOKUP_NODE, /* look up a node without readahead */
556 LOOKUP_NODE_RA, /*
557 * look up a node with readahead called
558 * by get_data_block.
559 */
560 };
561
562 #define DEFAULT_RETRY_IO_COUNT 8 /* maximum retry read IO count */
563
564 /* congestion wait timeout value, default: 20ms */
565 #define DEFAULT_IO_TIMEOUT (msecs_to_jiffies(20))
566
567 /* maximum retry quota flush count */
568 #define DEFAULT_RETRY_QUOTA_FLUSH_COUNT 8
569
570 #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
571
572 #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
573
574 /* for in-memory extent cache entry */
575 #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
576
577 /* number of extent info in extent cache we try to shrink */
578 #define EXTENT_CACHE_SHRINK_NUMBER 128
579
580 struct rb_entry {
581 struct rb_node rb_node; /* rb node located in rb-tree */
582 unsigned int ofs; /* start offset of the entry */
583 unsigned int len; /* length of the entry */
584 };
585
586 struct extent_info {
587 unsigned int fofs; /* start offset in a file */
588 unsigned int len; /* length of the extent */
589 u32 blk; /* start block address of the extent */
590 };
591
592 struct extent_node {
593 struct rb_node rb_node; /* rb node located in rb-tree */
594 struct extent_info ei; /* extent info */
595 struct list_head list; /* node in global extent list of sbi */
596 struct extent_tree *et; /* extent tree pointer */
597 };
598
599 struct extent_tree {
600 nid_t ino; /* inode number */
601 struct rb_root_cached root; /* root of extent info rb-tree */
602 struct extent_node *cached_en; /* recently accessed extent node */
603 struct extent_info largest; /* largested extent info */
604 struct list_head list; /* to be used by sbi->zombie_list */
605 rwlock_t lock; /* protect extent info rb-tree */
606 atomic_t node_cnt; /* # of extent node in rb-tree*/
607 bool largest_updated; /* largest extent updated */
608 };
609
610 /*
611 * This structure is taken from ext4_map_blocks.
612 *
613 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
614 */
615 #define F2FS_MAP_NEW (1 << BH_New)
616 #define F2FS_MAP_MAPPED (1 << BH_Mapped)
617 #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
618 #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
619 F2FS_MAP_UNWRITTEN)
620
621 struct f2fs_map_blocks {
622 block_t m_pblk;
623 block_t m_lblk;
624 unsigned int m_len;
625 unsigned int m_flags;
626 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
627 pgoff_t *m_next_extent; /* point to next possible extent */
628 int m_seg_type;
629 bool m_may_create; /* indicate it is from write path */
630 };
631
632 /* for flag in get_data_block */
633 enum {
634 F2FS_GET_BLOCK_DEFAULT,
635 F2FS_GET_BLOCK_FIEMAP,
636 F2FS_GET_BLOCK_BMAP,
637 F2FS_GET_BLOCK_DIO,
638 F2FS_GET_BLOCK_PRE_DIO,
639 F2FS_GET_BLOCK_PRE_AIO,
640 F2FS_GET_BLOCK_PRECACHE,
641 };
642
643 /*
644 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
645 */
646 #define FADVISE_COLD_BIT 0x01
647 #define FADVISE_LOST_PINO_BIT 0x02
648 #define FADVISE_ENCRYPT_BIT 0x04
649 #define FADVISE_ENC_NAME_BIT 0x08
650 #define FADVISE_KEEP_SIZE_BIT 0x10
651 #define FADVISE_HOT_BIT 0x20
652 #define FADVISE_VERITY_BIT 0x40
653
654 #define FADVISE_MODIFIABLE_BITS (FADVISE_COLD_BIT | FADVISE_HOT_BIT)
655
656 #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
657 #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
658 #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
659 #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
660 #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
661 #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
662 #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
663 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
664 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
665 #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
666 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
667 #define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT)
668 #define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
669 #define file_is_hot(inode) is_file(inode, FADVISE_HOT_BIT)
670 #define file_set_hot(inode) set_file(inode, FADVISE_HOT_BIT)
671 #define file_clear_hot(inode) clear_file(inode, FADVISE_HOT_BIT)
672 #define file_is_verity(inode) is_file(inode, FADVISE_VERITY_BIT)
673 #define file_set_verity(inode) set_file(inode, FADVISE_VERITY_BIT)
674
675 #define DEF_DIR_LEVEL 0
676
677 enum {
678 GC_FAILURE_PIN,
679 GC_FAILURE_ATOMIC,
680 MAX_GC_FAILURE
681 };
682
683 /* used for f2fs_inode_info->flags */
684 enum {
685 FI_NEW_INODE, /* indicate newly allocated inode */
686 FI_DIRTY_INODE, /* indicate inode is dirty or not */
687 FI_AUTO_RECOVER, /* indicate inode is recoverable */
688 FI_DIRTY_DIR, /* indicate directory has dirty pages */
689 FI_INC_LINK, /* need to increment i_nlink */
690 FI_ACL_MODE, /* indicate acl mode */
691 FI_NO_ALLOC, /* should not allocate any blocks */
692 FI_FREE_NID, /* free allocated nide */
693 FI_NO_EXTENT, /* not to use the extent cache */
694 FI_INLINE_XATTR, /* used for inline xattr */
695 FI_INLINE_DATA, /* used for inline data*/
696 FI_INLINE_DENTRY, /* used for inline dentry */
697 FI_APPEND_WRITE, /* inode has appended data */
698 FI_UPDATE_WRITE, /* inode has in-place-update data */
699 FI_NEED_IPU, /* used for ipu per file */
700 FI_ATOMIC_FILE, /* indicate atomic file */
701 FI_ATOMIC_COMMIT, /* indicate the state of atomical committing */
702 FI_VOLATILE_FILE, /* indicate volatile file */
703 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
704 FI_DROP_CACHE, /* drop dirty page cache */
705 FI_DATA_EXIST, /* indicate data exists */
706 FI_INLINE_DOTS, /* indicate inline dot dentries */
707 FI_DO_DEFRAG, /* indicate defragment is running */
708 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
709 FI_NO_PREALLOC, /* indicate skipped preallocated blocks */
710 FI_HOT_DATA, /* indicate file is hot */
711 FI_EXTRA_ATTR, /* indicate file has extra attribute */
712 FI_PROJ_INHERIT, /* indicate file inherits projectid */
713 FI_PIN_FILE, /* indicate file should not be gced */
714 FI_ATOMIC_REVOKE_REQUEST, /* request to drop atomic data */
715 FI_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */
716 FI_COMPRESSED_FILE, /* indicate file's data can be compressed */
717 FI_MMAP_FILE, /* indicate file was mmapped */
718 FI_MAX, /* max flag, never be used */
719 };
720
721 struct f2fs_inode_info {
722 struct inode vfs_inode; /* serve a vfs inode */
723 unsigned long i_flags; /* keep an inode flags for ioctl */
724 unsigned char i_advise; /* use to give file attribute hints */
725 unsigned char i_dir_level; /* use for dentry level for large dir */
726 unsigned int i_current_depth; /* only for directory depth */
727 /* for gc failure statistic */
728 unsigned int i_gc_failures[MAX_GC_FAILURE];
729 unsigned int i_pino; /* parent inode number */
730 umode_t i_acl_mode; /* keep file acl mode temporarily */
731
732 /* Use below internally in f2fs*/
733 unsigned long flags[BITS_TO_LONGS(FI_MAX)]; /* use to pass per-file flags */
734 struct rw_semaphore i_sem; /* protect fi info */
735 atomic_t dirty_pages; /* # of dirty pages */
736 f2fs_hash_t chash; /* hash value of given file name */
737 unsigned int clevel; /* maximum level of given file name */
738 struct task_struct *task; /* lookup and create consistency */
739 struct task_struct *cp_task; /* separate cp/wb IO stats*/
740 nid_t i_xattr_nid; /* node id that contains xattrs */
741 loff_t last_disk_size; /* lastly written file size */
742 spinlock_t i_size_lock; /* protect last_disk_size */
743
744 #ifdef CONFIG_QUOTA
745 struct dquot *i_dquot[MAXQUOTAS];
746
747 /* quota space reservation, managed internally by quota code */
748 qsize_t i_reserved_quota;
749 #endif
750 struct list_head dirty_list; /* dirty list for dirs and files */
751 struct list_head gdirty_list; /* linked in global dirty list */
752 struct list_head inmem_ilist; /* list for inmem inodes */
753 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
754 struct task_struct *inmem_task; /* store inmemory task */
755 struct mutex inmem_lock; /* lock for inmemory pages */
756 struct extent_tree *extent_tree; /* cached extent_tree entry */
757
758 /* avoid racing between foreground op and gc */
759 struct rw_semaphore i_gc_rwsem[2];
760 struct rw_semaphore i_mmap_sem;
761 struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
762
763 int i_extra_isize; /* size of extra space located in i_addr */
764 kprojid_t i_projid; /* id for project quota */
765 int i_inline_xattr_size; /* inline xattr size */
766 struct timespec64 i_crtime; /* inode creation time */
767 struct timespec64 i_disk_time[4];/* inode disk times */
768
769 /* for file compress */
770 u64 i_compr_blocks; /* # of compressed blocks */
771 unsigned char i_compress_algorithm; /* algorithm type */
772 unsigned char i_log_cluster_size; /* log of cluster size */
773 unsigned int i_cluster_size; /* cluster size */
774 };
775
776 static inline void get_extent_info(struct extent_info *ext,
777 struct f2fs_extent *i_ext)
778 {
779 ext->fofs = le32_to_cpu(i_ext->fofs);
780 ext->blk = le32_to_cpu(i_ext->blk);
781 ext->len = le32_to_cpu(i_ext->len);
782 }
783
784 static inline void set_raw_extent(struct extent_info *ext,
785 struct f2fs_extent *i_ext)
786 {
787 i_ext->fofs = cpu_to_le32(ext->fofs);
788 i_ext->blk = cpu_to_le32(ext->blk);
789 i_ext->len = cpu_to_le32(ext->len);
790 }
791
792 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
793 u32 blk, unsigned int len)
794 {
795 ei->fofs = fofs;
796 ei->blk = blk;
797 ei->len = len;
798 }
799
800 static inline bool __is_discard_mergeable(struct discard_info *back,
801 struct discard_info *front, unsigned int max_len)
802 {
803 return (back->lstart + back->len == front->lstart) &&
804 (back->len + front->len <= max_len);
805 }
806
807 static inline bool __is_discard_back_mergeable(struct discard_info *cur,
808 struct discard_info *back, unsigned int max_len)
809 {
810 return __is_discard_mergeable(back, cur, max_len);
811 }
812
813 static inline bool __is_discard_front_mergeable(struct discard_info *cur,
814 struct discard_info *front, unsigned int max_len)
815 {
816 return __is_discard_mergeable(cur, front, max_len);
817 }
818
819 static inline bool __is_extent_mergeable(struct extent_info *back,
820 struct extent_info *front)
821 {
822 return (back->fofs + back->len == front->fofs &&
823 back->blk + back->len == front->blk);
824 }
825
826 static inline bool __is_back_mergeable(struct extent_info *cur,
827 struct extent_info *back)
828 {
829 return __is_extent_mergeable(back, cur);
830 }
831
832 static inline bool __is_front_mergeable(struct extent_info *cur,
833 struct extent_info *front)
834 {
835 return __is_extent_mergeable(cur, front);
836 }
837
838 extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
839 static inline void __try_update_largest_extent(struct extent_tree *et,
840 struct extent_node *en)
841 {
842 if (en->ei.len > et->largest.len) {
843 et->largest = en->ei;
844 et->largest_updated = true;
845 }
846 }
847
848 /*
849 * For free nid management
850 */
851 enum nid_state {
852 FREE_NID, /* newly added to free nid list */
853 PREALLOC_NID, /* it is preallocated */
854 MAX_NID_STATE,
855 };
856
857 struct f2fs_nm_info {
858 block_t nat_blkaddr; /* base disk address of NAT */
859 nid_t max_nid; /* maximum possible node ids */
860 nid_t available_nids; /* # of available node ids */
861 nid_t next_scan_nid; /* the next nid to be scanned */
862 unsigned int ram_thresh; /* control the memory footprint */
863 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
864 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
865
866 /* NAT cache management */
867 struct radix_tree_root nat_root;/* root of the nat entry cache */
868 struct radix_tree_root nat_set_root;/* root of the nat set cache */
869 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
870 struct list_head nat_entries; /* cached nat entry list (clean) */
871 spinlock_t nat_list_lock; /* protect clean nat entry list */
872 unsigned int nat_cnt; /* the # of cached nat entries */
873 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
874 unsigned int nat_blocks; /* # of nat blocks */
875
876 /* free node ids management */
877 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
878 struct list_head free_nid_list; /* list for free nids excluding preallocated nids */
879 unsigned int nid_cnt[MAX_NID_STATE]; /* the number of free node id */
880 spinlock_t nid_list_lock; /* protect nid lists ops */
881 struct mutex build_lock; /* lock for build free nids */
882 unsigned char **free_nid_bitmap;
883 unsigned char *nat_block_bitmap;
884 unsigned short *free_nid_count; /* free nid count of NAT block */
885
886 /* for checkpoint */
887 char *nat_bitmap; /* NAT bitmap pointer */
888
889 unsigned int nat_bits_blocks; /* # of nat bits blocks */
890 unsigned char *nat_bits; /* NAT bits blocks */
891 unsigned char *full_nat_bits; /* full NAT pages */
892 unsigned char *empty_nat_bits; /* empty NAT pages */
893 #ifdef CONFIG_F2FS_CHECK_FS
894 char *nat_bitmap_mir; /* NAT bitmap mirror */
895 #endif
896 int bitmap_size; /* bitmap size */
897 };
898
899 /*
900 * this structure is used as one of function parameters.
901 * all the information are dedicated to a given direct node block determined
902 * by the data offset in a file.
903 */
904 struct dnode_of_data {
905 struct inode *inode; /* vfs inode pointer */
906 struct page *inode_page; /* its inode page, NULL is possible */
907 struct page *node_page; /* cached direct node page */
908 nid_t nid; /* node id of the direct node block */
909 unsigned int ofs_in_node; /* data offset in the node page */
910 bool inode_page_locked; /* inode page is locked or not */
911 bool node_changed; /* is node block changed */
912 char cur_level; /* level of hole node page */
913 char max_level; /* level of current page located */
914 block_t data_blkaddr; /* block address of the node block */
915 };
916
917 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
918 struct page *ipage, struct page *npage, nid_t nid)
919 {
920 memset(dn, 0, sizeof(*dn));
921 dn->inode = inode;
922 dn->inode_page = ipage;
923 dn->node_page = npage;
924 dn->nid = nid;
925 }
926
927 /*
928 * For SIT manager
929 *
930 * By default, there are 6 active log areas across the whole main area.
931 * When considering hot and cold data separation to reduce cleaning overhead,
932 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
933 * respectively.
934 * In the current design, you should not change the numbers intentionally.
935 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
936 * logs individually according to the underlying devices. (default: 6)
937 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
938 * data and 8 for node logs.
939 */
940 #define NR_CURSEG_DATA_TYPE (3)
941 #define NR_CURSEG_NODE_TYPE (3)
942 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
943
944 enum {
945 CURSEG_HOT_DATA = 0, /* directory entry blocks */
946 CURSEG_WARM_DATA, /* data blocks */
947 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
948 CURSEG_HOT_NODE, /* direct node blocks of directory files */
949 CURSEG_WARM_NODE, /* direct node blocks of normal files */
950 CURSEG_COLD_NODE, /* indirect node blocks */
951 NO_CHECK_TYPE,
952 CURSEG_COLD_DATA_PINNED,/* cold data for pinned file */
953 };
954
955 struct flush_cmd {
956 struct completion wait;
957 struct llist_node llnode;
958 nid_t ino;
959 int ret;
960 };
961
962 struct flush_cmd_control {
963 struct task_struct *f2fs_issue_flush; /* flush thread */
964 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
965 atomic_t issued_flush; /* # of issued flushes */
966 atomic_t queued_flush; /* # of queued flushes */
967 struct llist_head issue_list; /* list for command issue */
968 struct llist_node *dispatch_list; /* list for command dispatch */
969 };
970
971 struct f2fs_sm_info {
972 struct sit_info *sit_info; /* whole segment information */
973 struct free_segmap_info *free_info; /* free segment information */
974 struct dirty_seglist_info *dirty_info; /* dirty segment information */
975 struct curseg_info *curseg_array; /* active segment information */
976
977 struct rw_semaphore curseg_lock; /* for preventing curseg change */
978
979 block_t seg0_blkaddr; /* block address of 0'th segment */
980 block_t main_blkaddr; /* start block address of main area */
981 block_t ssa_blkaddr; /* start block address of SSA area */
982
983 unsigned int segment_count; /* total # of segments */
984 unsigned int main_segments; /* # of segments in main area */
985 unsigned int reserved_segments; /* # of reserved segments */
986 unsigned int ovp_segments; /* # of overprovision segments */
987
988 /* a threshold to reclaim prefree segments */
989 unsigned int rec_prefree_segments;
990
991 /* for batched trimming */
992 unsigned int trim_sections; /* # of sections to trim */
993
994 struct list_head sit_entry_set; /* sit entry set list */
995
996 unsigned int ipu_policy; /* in-place-update policy */
997 unsigned int min_ipu_util; /* in-place-update threshold */
998 unsigned int min_fsync_blocks; /* threshold for fsync */
999 unsigned int min_seq_blocks; /* threshold for sequential blocks */
1000 unsigned int min_hot_blocks; /* threshold for hot block allocation */
1001 unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */
1002
1003 /* for flush command control */
1004 struct flush_cmd_control *fcc_info;
1005
1006 /* for discard command control */
1007 struct discard_cmd_control *dcc_info;
1008 };
1009
1010 /*
1011 * For superblock
1012 */
1013 /*
1014 * COUNT_TYPE for monitoring
1015 *
1016 * f2fs monitors the number of several block types such as on-writeback,
1017 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
1018 */
1019 #define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
1020 enum count_type {
1021 F2FS_DIRTY_DENTS,
1022 F2FS_DIRTY_DATA,
1023 F2FS_DIRTY_QDATA,
1024 F2FS_DIRTY_NODES,
1025 F2FS_DIRTY_META,
1026 F2FS_INMEM_PAGES,
1027 F2FS_DIRTY_IMETA,
1028 F2FS_WB_CP_DATA,
1029 F2FS_WB_DATA,
1030 F2FS_RD_DATA,
1031 F2FS_RD_NODE,
1032 F2FS_RD_META,
1033 F2FS_DIO_WRITE,
1034 F2FS_DIO_READ,
1035 NR_COUNT_TYPE,
1036 };
1037
1038 /*
1039 * The below are the page types of bios used in submit_bio().
1040 * The available types are:
1041 * DATA User data pages. It operates as async mode.
1042 * NODE Node pages. It operates as async mode.
1043 * META FS metadata pages such as SIT, NAT, CP.
1044 * NR_PAGE_TYPE The number of page types.
1045 * META_FLUSH Make sure the previous pages are written
1046 * with waiting the bio's completion
1047 * ... Only can be used with META.
1048 */
1049 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
1050 enum page_type {
1051 DATA,
1052 NODE,
1053 META,
1054 NR_PAGE_TYPE,
1055 META_FLUSH,
1056 INMEM, /* the below types are used by tracepoints only. */
1057 INMEM_DROP,
1058 INMEM_INVALIDATE,
1059 INMEM_REVOKE,
1060 IPU,
1061 OPU,
1062 };
1063
1064 enum temp_type {
1065 HOT = 0, /* must be zero for meta bio */
1066 WARM,
1067 COLD,
1068 NR_TEMP_TYPE,
1069 };
1070
1071 enum need_lock_type {
1072 LOCK_REQ = 0,
1073 LOCK_DONE,
1074 LOCK_RETRY,
1075 };
1076
1077 enum cp_reason_type {
1078 CP_NO_NEEDED,
1079 CP_NON_REGULAR,
1080 CP_COMPRESSED,
1081 CP_HARDLINK,
1082 CP_SB_NEED_CP,
1083 CP_WRONG_PINO,
1084 CP_NO_SPC_ROLL,
1085 CP_NODE_NEED_CP,
1086 CP_FASTBOOT_MODE,
1087 CP_SPEC_LOG_NUM,
1088 CP_RECOVER_DIR,
1089 };
1090
1091 enum iostat_type {
1092 APP_DIRECT_IO, /* app direct IOs */
1093 APP_BUFFERED_IO, /* app buffered IOs */
1094 APP_WRITE_IO, /* app write IOs */
1095 APP_MAPPED_IO, /* app mapped IOs */
1096 FS_DATA_IO, /* data IOs from kworker/fsync/reclaimer */
1097 FS_NODE_IO, /* node IOs from kworker/fsync/reclaimer */
1098 FS_META_IO, /* meta IOs from kworker/reclaimer */
1099 FS_GC_DATA_IO, /* data IOs from forground gc */
1100 FS_GC_NODE_IO, /* node IOs from forground gc */
1101 FS_CP_DATA_IO, /* data IOs from checkpoint */
1102 FS_CP_NODE_IO, /* node IOs from checkpoint */
1103 FS_CP_META_IO, /* meta IOs from checkpoint */
1104 FS_DISCARD, /* discard */
1105 NR_IO_TYPE,
1106 };
1107
1108 struct f2fs_io_info {
1109 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
1110 nid_t ino; /* inode number */
1111 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
1112 enum temp_type temp; /* contains HOT/WARM/COLD */
1113 int op; /* contains REQ_OP_ */
1114 int op_flags; /* req_flag_bits */
1115 block_t new_blkaddr; /* new block address to be written */
1116 block_t old_blkaddr; /* old block address before Cow */
1117 struct page *page; /* page to be written */
1118 struct page *encrypted_page; /* encrypted page */
1119 struct page *compressed_page; /* compressed page */
1120 struct list_head list; /* serialize IOs */
1121 bool submitted; /* indicate IO submission */
1122 int need_lock; /* indicate we need to lock cp_rwsem */
1123 bool in_list; /* indicate fio is in io_list */
1124 bool is_por; /* indicate IO is from recovery or not */
1125 bool retry; /* need to reallocate block address */
1126 int compr_blocks; /* # of compressed block addresses */
1127 bool encrypted; /* indicate file is encrypted */
1128 enum iostat_type io_type; /* io type */
1129 struct writeback_control *io_wbc; /* writeback control */
1130 struct bio **bio; /* bio for ipu */
1131 sector_t *last_block; /* last block number in bio */
1132 unsigned char version; /* version of the node */
1133 };
1134
1135 struct bio_entry {
1136 struct bio *bio;
1137 struct list_head list;
1138 };
1139
1140 #define is_read_io(rw) ((rw) == READ)
1141 struct f2fs_bio_info {
1142 struct f2fs_sb_info *sbi; /* f2fs superblock */
1143 struct bio *bio; /* bios to merge */
1144 sector_t last_block_in_bio; /* last block number */
1145 struct f2fs_io_info fio; /* store buffered io info. */
1146 struct rw_semaphore io_rwsem; /* blocking op for bio */
1147 spinlock_t io_lock; /* serialize DATA/NODE IOs */
1148 struct list_head io_list; /* track fios */
1149 struct list_head bio_list; /* bio entry list head */
1150 struct rw_semaphore bio_list_lock; /* lock to protect bio entry list */
1151 };
1152
1153 #define FDEV(i) (sbi->devs[i])
1154 #define RDEV(i) (raw_super->devs[i])
1155 struct f2fs_dev_info {
1156 struct block_device *bdev;
1157 char path[MAX_PATH_LEN];
1158 unsigned int total_segments;
1159 block_t start_blk;
1160 block_t end_blk;
1161 #ifdef CONFIG_BLK_DEV_ZONED
1162 unsigned int nr_blkz; /* Total number of zones */
1163 unsigned long *blkz_seq; /* Bitmap indicating sequential zones */
1164 #endif
1165 };
1166
1167 enum inode_type {
1168 DIR_INODE, /* for dirty dir inode */
1169 FILE_INODE, /* for dirty regular/symlink inode */
1170 DIRTY_META, /* for all dirtied inode metadata */
1171 ATOMIC_FILE, /* for all atomic files */
1172 NR_INODE_TYPE,
1173 };
1174
1175 /* for inner inode cache management */
1176 struct inode_management {
1177 struct radix_tree_root ino_root; /* ino entry array */
1178 spinlock_t ino_lock; /* for ino entry lock */
1179 struct list_head ino_list; /* inode list head */
1180 unsigned long ino_num; /* number of entries */
1181 };
1182
1183 /* For s_flag in struct f2fs_sb_info */
1184 enum {
1185 SBI_IS_DIRTY, /* dirty flag for checkpoint */
1186 SBI_IS_CLOSE, /* specify unmounting */
1187 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
1188 SBI_POR_DOING, /* recovery is doing or not */
1189 SBI_NEED_SB_WRITE, /* need to recover superblock */
1190 SBI_NEED_CP, /* need to checkpoint */
1191 SBI_IS_SHUTDOWN, /* shutdown by ioctl */
1192 SBI_IS_RECOVERED, /* recovered orphan/data */
1193 SBI_CP_DISABLED, /* CP was disabled last mount */
1194 SBI_CP_DISABLED_QUICK, /* CP was disabled quickly */
1195 SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */
1196 SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */
1197 SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */
1198 SBI_IS_RESIZEFS, /* resizefs is in process */
1199 };
1200
1201 enum {
1202 CP_TIME,
1203 REQ_TIME,
1204 DISCARD_TIME,
1205 GC_TIME,
1206 DISABLE_TIME,
1207 UMOUNT_DISCARD_TIMEOUT,
1208 MAX_TIME,
1209 };
1210
1211 enum {
1212 GC_NORMAL,
1213 GC_IDLE_CB,
1214 GC_IDLE_GREEDY,
1215 GC_URGENT,
1216 };
1217
1218 enum {
1219 BGGC_MODE_ON, /* background gc is on */
1220 BGGC_MODE_OFF, /* background gc is off */
1221 BGGC_MODE_SYNC, /*
1222 * background gc is on, migrating blocks
1223 * like foreground gc
1224 */
1225 };
1226
1227 enum {
1228 FS_MODE_ADAPTIVE, /* use both lfs/ssr allocation */
1229 FS_MODE_LFS, /* use lfs allocation only */
1230 };
1231
1232 enum {
1233 WHINT_MODE_OFF, /* not pass down write hints */
1234 WHINT_MODE_USER, /* try to pass down hints given by users */
1235 WHINT_MODE_FS, /* pass down hints with F2FS policy */
1236 };
1237
1238 enum {
1239 ALLOC_MODE_DEFAULT, /* stay default */
1240 ALLOC_MODE_REUSE, /* reuse segments as much as possible */
1241 };
1242
1243 enum fsync_mode {
1244 FSYNC_MODE_POSIX, /* fsync follows posix semantics */
1245 FSYNC_MODE_STRICT, /* fsync behaves in line with ext4 */
1246 FSYNC_MODE_NOBARRIER, /* fsync behaves nobarrier based on posix */
1247 };
1248
1249 /*
1250 * this value is set in page as a private data which indicate that
1251 * the page is atomically written, and it is in inmem_pages list.
1252 */
1253 #define ATOMIC_WRITTEN_PAGE ((unsigned long)-1)
1254 #define DUMMY_WRITTEN_PAGE ((unsigned long)-2)
1255
1256 #define IS_ATOMIC_WRITTEN_PAGE(page) \
1257 (page_private(page) == (unsigned long)ATOMIC_WRITTEN_PAGE)
1258 #define IS_DUMMY_WRITTEN_PAGE(page) \
1259 (page_private(page) == (unsigned long)DUMMY_WRITTEN_PAGE)
1260
1261 #ifdef CONFIG_FS_ENCRYPTION
1262 #define DUMMY_ENCRYPTION_ENABLED(sbi) \
1263 (unlikely(F2FS_OPTION(sbi).test_dummy_encryption))
1264 #else
1265 #define DUMMY_ENCRYPTION_ENABLED(sbi) (0)
1266 #endif
1267
1268 /* For compression */
1269 enum compress_algorithm_type {
1270 COMPRESS_LZO,
1271 COMPRESS_LZ4,
1272 COMPRESS_ZSTD,
1273 COMPRESS_MAX,
1274 };
1275
1276 #define COMPRESS_DATA_RESERVED_SIZE 5
1277 struct compress_data {
1278 __le32 clen; /* compressed data size */
1279 __le32 reserved[COMPRESS_DATA_RESERVED_SIZE]; /* reserved */
1280 u8 cdata[]; /* compressed data */
1281 };
1282
1283 #define COMPRESS_HEADER_SIZE (sizeof(struct compress_data))
1284
1285 #define F2FS_COMPRESSED_PAGE_MAGIC 0xF5F2C000
1286
1287 /* compress context */
1288 struct compress_ctx {
1289 struct inode *inode; /* inode the context belong to */
1290 pgoff_t cluster_idx; /* cluster index number */
1291 unsigned int cluster_size; /* page count in cluster */
1292 unsigned int log_cluster_size; /* log of cluster size */
1293 struct page **rpages; /* pages store raw data in cluster */
1294 unsigned int nr_rpages; /* total page number in rpages */
1295 struct page **cpages; /* pages store compressed data in cluster */
1296 unsigned int nr_cpages; /* total page number in cpages */
1297 void *rbuf; /* virtual mapped address on rpages */
1298 struct compress_data *cbuf; /* virtual mapped address on cpages */
1299 size_t rlen; /* valid data length in rbuf */
1300 size_t clen; /* valid data length in cbuf */
1301 void *private; /* payload buffer for specified compression algorithm */
1302 void *private2; /* extra payload buffer */
1303 };
1304
1305 /* compress context for write IO path */
1306 struct compress_io_ctx {
1307 u32 magic; /* magic number to indicate page is compressed */
1308 struct inode *inode; /* inode the context belong to */
1309 struct page **rpages; /* pages store raw data in cluster */
1310 unsigned int nr_rpages; /* total page number in rpages */
1311 refcount_t ref; /* referrence count of raw page */
1312 };
1313
1314 /* decompress io context for read IO path */
1315 struct decompress_io_ctx {
1316 u32 magic; /* magic number to indicate page is compressed */
1317 struct inode *inode; /* inode the context belong to */
1318 pgoff_t cluster_idx; /* cluster index number */
1319 unsigned int cluster_size; /* page count in cluster */
1320 unsigned int log_cluster_size; /* log of cluster size */
1321 struct page **rpages; /* pages store raw data in cluster */
1322 unsigned int nr_rpages; /* total page number in rpages */
1323 struct page **cpages; /* pages store compressed data in cluster */
1324 unsigned int nr_cpages; /* total page number in cpages */
1325 struct page **tpages; /* temp pages to pad holes in cluster */
1326 void *rbuf; /* virtual mapped address on rpages */
1327 struct compress_data *cbuf; /* virtual mapped address on cpages */
1328 size_t rlen; /* valid data length in rbuf */
1329 size_t clen; /* valid data length in cbuf */
1330 refcount_t ref; /* referrence count of compressed page */
1331 bool failed; /* indicate IO error during decompression */
1332 void *private; /* payload buffer for specified decompression algorithm */
1333 void *private2; /* extra payload buffer */
1334 };
1335
1336 #define NULL_CLUSTER ((unsigned int)(~0))
1337 #define MIN_COMPRESS_LOG_SIZE 2
1338 #define MAX_COMPRESS_LOG_SIZE 8
1339 #define MAX_COMPRESS_WINDOW_SIZE ((PAGE_SIZE) << MAX_COMPRESS_LOG_SIZE)
1340
1341 struct f2fs_sb_info {
1342 struct super_block *sb; /* pointer to VFS super block */
1343 struct proc_dir_entry *s_proc; /* proc entry */
1344 struct f2fs_super_block *raw_super; /* raw super block pointer */
1345 struct rw_semaphore sb_lock; /* lock for raw super block */
1346 int valid_super_block; /* valid super block no */
1347 unsigned long s_flag; /* flags for sbi */
1348 struct mutex writepages; /* mutex for writepages() */
1349 #ifdef CONFIG_UNICODE
1350 struct unicode_map *s_encoding;
1351 __u16 s_encoding_flags;
1352 #endif
1353
1354 #ifdef CONFIG_BLK_DEV_ZONED
1355 unsigned int blocks_per_blkz; /* F2FS blocks per zone */
1356 unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
1357 #endif
1358
1359 /* for node-related operations */
1360 struct f2fs_nm_info *nm_info; /* node manager */
1361 struct inode *node_inode; /* cache node blocks */
1362
1363 /* for segment-related operations */
1364 struct f2fs_sm_info *sm_info; /* segment manager */
1365
1366 /* for bio operations */
1367 struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */
1368 /* keep migration IO order for LFS mode */
1369 struct rw_semaphore io_order_lock;
1370 mempool_t *write_io_dummy; /* Dummy pages */
1371
1372 /* for checkpoint */
1373 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
1374 int cur_cp_pack; /* remain current cp pack */
1375 spinlock_t cp_lock; /* for flag in ckpt */
1376 struct inode *meta_inode; /* cache meta blocks */
1377 struct mutex cp_mutex; /* checkpoint procedure lock */
1378 struct rw_semaphore cp_rwsem; /* blocking FS operations */
1379 struct rw_semaphore node_write; /* locking node writes */
1380 struct rw_semaphore node_change; /* locking node change */
1381 wait_queue_head_t cp_wait;
1382 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
1383 long interval_time[MAX_TIME]; /* to store thresholds */
1384
1385 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
1386
1387 spinlock_t fsync_node_lock; /* for node entry lock */
1388 struct list_head fsync_node_list; /* node list head */
1389 unsigned int fsync_seg_id; /* sequence id */
1390 unsigned int fsync_node_num; /* number of node entries */
1391
1392 /* for orphan inode, use 0'th array */
1393 unsigned int max_orphans; /* max orphan inodes */
1394
1395 /* for inode management */
1396 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
1397 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
1398 struct mutex flush_lock; /* for flush exclusion */
1399
1400 /* for extent tree cache */
1401 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
1402 struct mutex extent_tree_lock; /* locking extent radix tree */
1403 struct list_head extent_list; /* lru list for shrinker */
1404 spinlock_t extent_lock; /* locking extent lru list */
1405 atomic_t total_ext_tree; /* extent tree count */
1406 struct list_head zombie_list; /* extent zombie tree list */
1407 atomic_t total_zombie_tree; /* extent zombie tree count */
1408 atomic_t total_ext_node; /* extent info count */
1409
1410 /* basic filesystem units */
1411 unsigned int log_sectors_per_block; /* log2 sectors per block */
1412 unsigned int log_blocksize; /* log2 block size */
1413 unsigned int blocksize; /* block size */
1414 unsigned int root_ino_num; /* root inode number*/
1415 unsigned int node_ino_num; /* node inode number*/
1416 unsigned int meta_ino_num; /* meta inode number*/
1417 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
1418 unsigned int blocks_per_seg; /* blocks per segment */
1419 unsigned int segs_per_sec; /* segments per section */
1420 unsigned int secs_per_zone; /* sections per zone */
1421 unsigned int total_sections; /* total section count */
1422 struct mutex resize_mutex; /* for resize exclusion */
1423 unsigned int total_node_count; /* total node block count */
1424 unsigned int total_valid_node_count; /* valid node block count */
1425 loff_t max_file_blocks; /* max block index of file */
1426 int dir_level; /* directory level */
1427 int readdir_ra; /* readahead inode in readdir */
1428
1429 block_t user_block_count; /* # of user blocks */
1430 block_t total_valid_block_count; /* # of valid blocks */
1431 block_t discard_blks; /* discard command candidats */
1432 block_t last_valid_block_count; /* for recovery */
1433 block_t reserved_blocks; /* configurable reserved blocks */
1434 block_t current_reserved_blocks; /* current reserved blocks */
1435
1436 /* Additional tracking for no checkpoint mode */
1437 block_t unusable_block_count; /* # of blocks saved by last cp */
1438
1439 unsigned int nquota_files; /* # of quota sysfile */
1440 struct rw_semaphore quota_sem; /* blocking cp for flags */
1441
1442 /* # of pages, see count_type */
1443 atomic_t nr_pages[NR_COUNT_TYPE];
1444 /* # of allocated blocks */
1445 struct percpu_counter alloc_valid_block_count;
1446
1447 /* writeback control */
1448 atomic_t wb_sync_req[META]; /* count # of WB_SYNC threads */
1449
1450 /* valid inode count */
1451 struct percpu_counter total_valid_inode_count;
1452
1453 struct f2fs_mount_info mount_opt; /* mount options */
1454
1455 /* for cleaning operations */
1456 struct rw_semaphore gc_lock; /*
1457 * semaphore for GC, avoid
1458 * race between GC and GC or CP
1459 */
1460 struct f2fs_gc_kthread *gc_thread; /* GC thread */
1461 unsigned int cur_victim_sec; /* current victim section num */
1462 unsigned int gc_mode; /* current GC state */
1463 unsigned int next_victim_seg[2]; /* next segment in victim section */
1464 /* for skip statistic */
1465 unsigned int atomic_files; /* # of opened atomic file */
1466 unsigned long long skipped_atomic_files[2]; /* FG_GC and BG_GC */
1467 unsigned long long skipped_gc_rwsem; /* FG_GC only */
1468
1469 /* threshold for gc trials on pinned files */
1470 u64 gc_pin_file_threshold;
1471 struct rw_semaphore pin_sem;
1472
1473 /* maximum # of trials to find a victim segment for SSR and GC */
1474 unsigned int max_victim_search;
1475 /* migration granularity of garbage collection, unit: segment */
1476 unsigned int migration_granularity;
1477
1478 /*
1479 * for stat information.
1480 * one is for the LFS mode, and the other is for the SSR mode.
1481 */
1482 #ifdef CONFIG_F2FS_STAT_FS
1483 struct f2fs_stat_info *stat_info; /* FS status information */
1484 atomic_t meta_count[META_MAX]; /* # of meta blocks */
1485 unsigned int segment_count[2]; /* # of allocated segments */
1486 unsigned int block_count[2]; /* # of allocated blocks */
1487 atomic_t inplace_count; /* # of inplace update */
1488 atomic64_t total_hit_ext; /* # of lookup extent cache */
1489 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
1490 atomic64_t read_hit_largest; /* # of hit largest extent node */
1491 atomic64_t read_hit_cached; /* # of hit cached extent node */
1492 atomic_t inline_xattr; /* # of inline_xattr inodes */
1493 atomic_t inline_inode; /* # of inline_data inodes */
1494 atomic_t inline_dir; /* # of inline_dentry inodes */
1495 atomic_t compr_inode; /* # of compressed inodes */
1496 atomic_t compr_blocks; /* # of compressed blocks */
1497 atomic_t vw_cnt; /* # of volatile writes */
1498 atomic_t max_aw_cnt; /* max # of atomic writes */
1499 atomic_t max_vw_cnt; /* max # of volatile writes */
1500 unsigned int io_skip_bggc; /* skip background gc for in-flight IO */
1501 unsigned int other_skip_bggc; /* skip background gc for other reasons */
1502 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
1503 #endif
1504 spinlock_t stat_lock; /* lock for stat operations */
1505
1506 /* For app/fs IO statistics */
1507 spinlock_t iostat_lock;
1508 unsigned long long write_iostat[NR_IO_TYPE];
1509 bool iostat_enable;
1510
1511 /* For sysfs suppport */
1512 struct kobject s_kobj;
1513 struct completion s_kobj_unregister;
1514
1515 /* For shrinker support */
1516 struct list_head s_list;
1517 int s_ndevs; /* number of devices */
1518 struct f2fs_dev_info *devs; /* for device list */
1519 unsigned int dirty_device; /* for checkpoint data flush */
1520 spinlock_t dev_lock; /* protect dirty_device */
1521 struct mutex umount_mutex;
1522 unsigned int shrinker_run_no;
1523
1524 /* For write statistics */
1525 u64 sectors_written_start;
1526 u64 kbytes_written;
1527
1528 /* Reference to checksum algorithm driver via cryptoapi */
1529 struct crypto_shash *s_chksum_driver;
1530
1531 /* Precomputed FS UUID checksum for seeding other checksums */
1532 __u32 s_chksum_seed;
1533
1534 struct workqueue_struct *post_read_wq; /* post read workqueue */
1535
1536 struct kmem_cache *inline_xattr_slab; /* inline xattr entry */
1537 unsigned int inline_xattr_slab_size; /* default inline xattr slab size */
1538 };
1539
1540 struct f2fs_private_dio {
1541 struct inode *inode;
1542 void *orig_private;
1543 bio_end_io_t *orig_end_io;
1544 bool write;
1545 };
1546
1547 #ifdef CONFIG_F2FS_FAULT_INJECTION
1548 #define f2fs_show_injection_info(sbi, type) \
1549 printk_ratelimited("%sF2FS-fs (%s) : inject %s in %s of %pS\n", \
1550 KERN_INFO, sbi->sb->s_id, \
1551 f2fs_fault_name[type], \
1552 __func__, __builtin_return_address(0))
1553 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1554 {
1555 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1556
1557 if (!ffi->inject_rate)
1558 return false;
1559
1560 if (!IS_FAULT_SET(ffi, type))
1561 return false;
1562
1563 atomic_inc(&ffi->inject_ops);
1564 if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
1565 atomic_set(&ffi->inject_ops, 0);
1566 return true;
1567 }
1568 return false;
1569 }
1570 #else
1571 #define f2fs_show_injection_info(sbi, type) do { } while (0)
1572 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1573 {
1574 return false;
1575 }
1576 #endif
1577
1578 /*
1579 * Test if the mounted volume is a multi-device volume.
1580 * - For a single regular disk volume, sbi->s_ndevs is 0.
1581 * - For a single zoned disk volume, sbi->s_ndevs is 1.
1582 * - For a multi-device volume, sbi->s_ndevs is always 2 or more.
1583 */
1584 static inline bool f2fs_is_multi_device(struct f2fs_sb_info *sbi)
1585 {
1586 return sbi->s_ndevs > 1;
1587 }
1588
1589 /* For write statistics. Suppose sector size is 512 bytes,
1590 * and the return value is in kbytes. s is of struct f2fs_sb_info.
1591 */
1592 #define BD_PART_WRITTEN(s) \
1593 (((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[STAT_WRITE]) - \
1594 (s)->sectors_written_start) >> 1)
1595
1596 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
1597 {
1598 unsigned long now = jiffies;
1599
1600 sbi->last_time[type] = now;
1601
1602 /* DISCARD_TIME and GC_TIME are based on REQ_TIME */
1603 if (type == REQ_TIME) {
1604 sbi->last_time[DISCARD_TIME] = now;
1605 sbi->last_time[GC_TIME] = now;
1606 }
1607 }
1608
1609 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
1610 {
1611 unsigned long interval = sbi->interval_time[type] * HZ;
1612
1613 return time_after(jiffies, sbi->last_time[type] + interval);
1614 }
1615
1616 static inline unsigned int f2fs_time_to_wait(struct f2fs_sb_info *sbi,
1617 int type)
1618 {
1619 unsigned long interval = sbi->interval_time[type] * HZ;
1620 unsigned int wait_ms = 0;
1621 long delta;
1622
1623 delta = (sbi->last_time[type] + interval) - jiffies;
1624 if (delta > 0)
1625 wait_ms = jiffies_to_msecs(delta);
1626
1627 return wait_ms;
1628 }
1629
1630 /*
1631 * Inline functions
1632 */
1633 static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc,
1634 const void *address, unsigned int length)
1635 {
1636 struct {
1637 struct shash_desc shash;
1638 char ctx[4];
1639 } desc;
1640 int err;
1641
1642 BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx));
1643
1644 desc.shash.tfm = sbi->s_chksum_driver;
1645 *(u32 *)desc.ctx = crc;
1646
1647 err = crypto_shash_update(&desc.shash, address, length);
1648 BUG_ON(err);
1649
1650 return *(u32 *)desc.ctx;
1651 }
1652
1653 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
1654 unsigned int length)
1655 {
1656 return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length);
1657 }
1658
1659 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
1660 void *buf, size_t buf_size)
1661 {
1662 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
1663 }
1664
1665 static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc,
1666 const void *address, unsigned int length)
1667 {
1668 return __f2fs_crc32(sbi, crc, address, length);
1669 }
1670
1671 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
1672 {
1673 return container_of(inode, struct f2fs_inode_info, vfs_inode);
1674 }
1675
1676 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
1677 {
1678 return sb->s_fs_info;
1679 }
1680
1681 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
1682 {
1683 return F2FS_SB(inode->i_sb);
1684 }
1685
1686 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
1687 {
1688 return F2FS_I_SB(mapping->host);
1689 }
1690
1691 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
1692 {
1693 return F2FS_M_SB(page_file_mapping(page));
1694 }
1695
1696 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
1697 {
1698 return (struct f2fs_super_block *)(sbi->raw_super);
1699 }
1700
1701 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1702 {
1703 return (struct f2fs_checkpoint *)(sbi->ckpt);
1704 }
1705
1706 static inline struct f2fs_node *F2FS_NODE(struct page *page)
1707 {
1708 return (struct f2fs_node *)page_address(page);
1709 }
1710
1711 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1712 {
1713 return &((struct f2fs_node *)page_address(page))->i;
1714 }
1715
1716 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1717 {
1718 return (struct f2fs_nm_info *)(sbi->nm_info);
1719 }
1720
1721 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1722 {
1723 return (struct f2fs_sm_info *)(sbi->sm_info);
1724 }
1725
1726 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1727 {
1728 return (struct sit_info *)(SM_I(sbi)->sit_info);
1729 }
1730
1731 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1732 {
1733 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1734 }
1735
1736 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1737 {
1738 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1739 }
1740
1741 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1742 {
1743 return sbi->meta_inode->i_mapping;
1744 }
1745
1746 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1747 {
1748 return sbi->node_inode->i_mapping;
1749 }
1750
1751 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1752 {
1753 return test_bit(type, &sbi->s_flag);
1754 }
1755
1756 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1757 {
1758 set_bit(type, &sbi->s_flag);
1759 }
1760
1761 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1762 {
1763 clear_bit(type, &sbi->s_flag);
1764 }
1765
1766 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1767 {
1768 return le64_to_cpu(cp->checkpoint_ver);
1769 }
1770
1771 static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type)
1772 {
1773 if (type < F2FS_MAX_QUOTAS)
1774 return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]);
1775 return 0;
1776 }
1777
1778 static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
1779 {
1780 size_t crc_offset = le32_to_cpu(cp->checksum_offset);
1781 return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
1782 }
1783
1784 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1785 {
1786 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1787
1788 return ckpt_flags & f;
1789 }
1790
1791 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1792 {
1793 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1794 }
1795
1796 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1797 {
1798 unsigned int ckpt_flags;
1799
1800 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1801 ckpt_flags |= f;
1802 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1803 }
1804
1805 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1806 {
1807 unsigned long flags;
1808
1809 spin_lock_irqsave(&sbi->cp_lock, flags);
1810 __set_ckpt_flags(F2FS_CKPT(sbi), f);
1811 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1812 }
1813
1814 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1815 {
1816 unsigned int ckpt_flags;
1817
1818 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1819 ckpt_flags &= (~f);
1820 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1821 }
1822
1823 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1824 {
1825 unsigned long flags;
1826
1827 spin_lock_irqsave(&sbi->cp_lock, flags);
1828 __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1829 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1830 }
1831
1832 static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
1833 {
1834 unsigned long flags;
1835 unsigned char *nat_bits;
1836
1837 /*
1838 * In order to re-enable nat_bits we need to call fsck.f2fs by
1839 * set_sbi_flag(sbi, SBI_NEED_FSCK). But it may give huge cost,
1840 * so let's rely on regular fsck or unclean shutdown.
1841 */
1842
1843 if (lock)
1844 spin_lock_irqsave(&sbi->cp_lock, flags);
1845 __clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
1846 nat_bits = NM_I(sbi)->nat_bits;
1847 NM_I(sbi)->nat_bits = NULL;
1848 if (lock)
1849 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1850
1851 kvfree(nat_bits);
1852 }
1853
1854 static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
1855 struct cp_control *cpc)
1856 {
1857 bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1858
1859 return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1860 }
1861
1862 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1863 {
1864 down_read(&sbi->cp_rwsem);
1865 }
1866
1867 static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
1868 {
1869 return down_read_trylock(&sbi->cp_rwsem);
1870 }
1871
1872 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1873 {
1874 up_read(&sbi->cp_rwsem);
1875 }
1876
1877 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1878 {
1879 down_write(&sbi->cp_rwsem);
1880 }
1881
1882 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1883 {
1884 up_write(&sbi->cp_rwsem);
1885 }
1886
1887 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1888 {
1889 int reason = CP_SYNC;
1890
1891 if (test_opt(sbi, FASTBOOT))
1892 reason = CP_FASTBOOT;
1893 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1894 reason = CP_UMOUNT;
1895 return reason;
1896 }
1897
1898 static inline bool __remain_node_summaries(int reason)
1899 {
1900 return (reason & (CP_UMOUNT | CP_FASTBOOT));
1901 }
1902
1903 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1904 {
1905 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1906 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1907 }
1908
1909 /*
1910 * Check whether the inode has blocks or not
1911 */
1912 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1913 {
1914 block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
1915
1916 return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1917 }
1918
1919 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1920 {
1921 return ofs == XATTR_NODE_OFFSET;
1922 }
1923
1924 static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
1925 struct inode *inode, bool cap)
1926 {
1927 if (!inode)
1928 return true;
1929 if (!test_opt(sbi, RESERVE_ROOT))
1930 return false;
1931 if (IS_NOQUOTA(inode))
1932 return true;
1933 if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid()))
1934 return true;
1935 if (!gid_eq(F2FS_OPTION(sbi).s_resgid, GLOBAL_ROOT_GID) &&
1936 in_group_p(F2FS_OPTION(sbi).s_resgid))
1937 return true;
1938 if (cap && capable(CAP_SYS_RESOURCE))
1939 return true;
1940 return false;
1941 }
1942
1943 static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
1944 static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
1945 struct inode *inode, blkcnt_t *count)
1946 {
1947 blkcnt_t diff = 0, release = 0;
1948 block_t avail_user_block_count;
1949 int ret;
1950
1951 ret = dquot_reserve_block(inode, *count);
1952 if (ret)
1953 return ret;
1954
1955 if (time_to_inject(sbi, FAULT_BLOCK)) {
1956 f2fs_show_injection_info(sbi, FAULT_BLOCK);
1957 release = *count;
1958 goto release_quota;
1959 }
1960
1961 /*
1962 * let's increase this in prior to actual block count change in order
1963 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1964 */
1965 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1966
1967 spin_lock(&sbi->stat_lock);
1968 sbi->total_valid_block_count += (block_t)(*count);
1969 avail_user_block_count = sbi->user_block_count -
1970 sbi->current_reserved_blocks;
1971
1972 if (!__allow_reserved_blocks(sbi, inode, true))
1973 avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
1974 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1975 if (avail_user_block_count > sbi->unusable_block_count)
1976 avail_user_block_count -= sbi->unusable_block_count;
1977 else
1978 avail_user_block_count = 0;
1979 }
1980 if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
1981 diff = sbi->total_valid_block_count - avail_user_block_count;
1982 if (diff > *count)
1983 diff = *count;
1984 *count -= diff;
1985 release = diff;
1986 sbi->total_valid_block_count -= diff;
1987 if (!*count) {
1988 spin_unlock(&sbi->stat_lock);
1989 goto enospc;
1990 }
1991 }
1992 spin_unlock(&sbi->stat_lock);
1993
1994 if (unlikely(release)) {
1995 percpu_counter_sub(&sbi->alloc_valid_block_count, release);
1996 dquot_release_reservation_block(inode, release);
1997 }
1998 f2fs_i_blocks_write(inode, *count, true, true);
1999 return 0;
2000
2001 enospc:
2002 percpu_counter_sub(&sbi->alloc_valid_block_count, release);
2003 release_quota:
2004 dquot_release_reservation_block(inode, release);
2005 return -ENOSPC;
2006 }
2007
2008 __printf(2, 3)
2009 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...);
2010
2011 #define f2fs_err(sbi, fmt, ...) \
2012 f2fs_printk(sbi, KERN_ERR fmt, ##__VA_ARGS__)
2013 #define f2fs_warn(sbi, fmt, ...) \
2014 f2fs_printk(sbi, KERN_WARNING fmt, ##__VA_ARGS__)
2015 #define f2fs_notice(sbi, fmt, ...) \
2016 f2fs_printk(sbi, KERN_NOTICE fmt, ##__VA_ARGS__)
2017 #define f2fs_info(sbi, fmt, ...) \
2018 f2fs_printk(sbi, KERN_INFO fmt, ##__VA_ARGS__)
2019 #define f2fs_debug(sbi, fmt, ...) \
2020 f2fs_printk(sbi, KERN_DEBUG fmt, ##__VA_ARGS__)
2021
2022 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
2023 struct inode *inode,
2024 block_t count)
2025 {
2026 blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;
2027
2028 spin_lock(&sbi->stat_lock);
2029 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
2030 sbi->total_valid_block_count -= (block_t)count;
2031 if (sbi->reserved_blocks &&
2032 sbi->current_reserved_blocks < sbi->reserved_blocks)
2033 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
2034 sbi->current_reserved_blocks + count);
2035 spin_unlock(&sbi->stat_lock);
2036 if (unlikely(inode->i_blocks < sectors)) {
2037 f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu, sectors:%llu",
2038 inode->i_ino,
2039 (unsigned long long)inode->i_blocks,
2040 (unsigned long long)sectors);
2041 set_sbi_flag(sbi, SBI_NEED_FSCK);
2042 return;
2043 }
2044 f2fs_i_blocks_write(inode, count, false, true);
2045 }
2046
2047 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
2048 {
2049 atomic_inc(&sbi->nr_pages[count_type]);
2050
2051 if (count_type == F2FS_DIRTY_DENTS ||
2052 count_type == F2FS_DIRTY_NODES ||
2053 count_type == F2FS_DIRTY_META ||
2054 count_type == F2FS_DIRTY_QDATA ||
2055 count_type == F2FS_DIRTY_IMETA)
2056 set_sbi_flag(sbi, SBI_IS_DIRTY);
2057 }
2058
2059 static inline void inode_inc_dirty_pages(struct inode *inode)
2060 {
2061 atomic_inc(&F2FS_I(inode)->dirty_pages);
2062 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
2063 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
2064 if (IS_NOQUOTA(inode))
2065 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
2066 }
2067
2068 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
2069 {
2070 atomic_dec(&sbi->nr_pages[count_type]);
2071 }
2072
2073 static inline void inode_dec_dirty_pages(struct inode *inode)
2074 {
2075 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
2076 !S_ISLNK(inode->i_mode))
2077 return;
2078
2079 atomic_dec(&F2FS_I(inode)->dirty_pages);
2080 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
2081 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
2082 if (IS_NOQUOTA(inode))
2083 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
2084 }
2085
2086 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
2087 {
2088 return atomic_read(&sbi->nr_pages[count_type]);
2089 }
2090
2091 static inline int get_dirty_pages(struct inode *inode)
2092 {
2093 return atomic_read(&F2FS_I(inode)->dirty_pages);
2094 }
2095
2096 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
2097 {
2098 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
2099 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
2100 sbi->log_blocks_per_seg;
2101
2102 return segs / sbi->segs_per_sec;
2103 }
2104
2105 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
2106 {
2107 return sbi->total_valid_block_count;
2108 }
2109
2110 static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
2111 {
2112 return sbi->discard_blks;
2113 }
2114
2115 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
2116 {
2117 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2118
2119 /* return NAT or SIT bitmap */
2120 if (flag == NAT_BITMAP)
2121 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
2122 else if (flag == SIT_BITMAP)
2123 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2124
2125 return 0;
2126 }
2127
2128 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
2129 {
2130 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
2131 }
2132
2133 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
2134 {
2135 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2136 int offset;
2137
2138 if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) {
2139 offset = (flag == SIT_BITMAP) ?
2140 le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0;
2141 /*
2142 * if large_nat_bitmap feature is enabled, leave checksum
2143 * protection for all nat/sit bitmaps.
2144 */
2145 return &ckpt->sit_nat_version_bitmap + offset + sizeof(__le32);
2146 }
2147
2148 if (__cp_payload(sbi) > 0) {
2149 if (flag == NAT_BITMAP)
2150 return &ckpt->sit_nat_version_bitmap;
2151 else
2152 return (unsigned char *)ckpt + F2FS_BLKSIZE;
2153 } else {
2154 offset = (flag == NAT_BITMAP) ?
2155 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
2156 return &ckpt->sit_nat_version_bitmap + offset;
2157 }
2158 }
2159
2160 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
2161 {
2162 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
2163
2164 if (sbi->cur_cp_pack == 2)
2165 start_addr += sbi->blocks_per_seg;
2166 return start_addr;
2167 }
2168
2169 static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
2170 {
2171 block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
2172
2173 if (sbi->cur_cp_pack == 1)
2174 start_addr += sbi->blocks_per_seg;
2175 return start_addr;
2176 }
2177
2178 static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
2179 {
2180 sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
2181 }
2182
2183 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
2184 {
2185 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
2186 }
2187
2188 static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
2189 struct inode *inode, bool is_inode)
2190 {
2191 block_t valid_block_count;
2192 unsigned int valid_node_count, user_block_count;
2193 int err;
2194
2195 if (is_inode) {
2196 if (inode) {
2197 err = dquot_alloc_inode(inode);
2198 if (err)
2199 return err;
2200 }
2201 } else {
2202 err = dquot_reserve_block(inode, 1);
2203 if (err)
2204 return err;
2205 }
2206
2207 if (time_to_inject(sbi, FAULT_BLOCK)) {
2208 f2fs_show_injection_info(sbi, FAULT_BLOCK);
2209 goto enospc;
2210 }
2211
2212 spin_lock(&sbi->stat_lock);
2213
2214 valid_block_count = sbi->total_valid_block_count +
2215 sbi->current_reserved_blocks + 1;
2216
2217 if (!__allow_reserved_blocks(sbi, inode, false))
2218 valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks;
2219 user_block_count = sbi->user_block_count;
2220 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2221 user_block_count -= sbi->unusable_block_count;
2222
2223 if (unlikely(valid_block_count > user_block_count)) {
2224 spin_unlock(&sbi->stat_lock);
2225 goto enospc;
2226 }
2227
2228 valid_node_count = sbi->total_valid_node_count + 1;
2229 if (unlikely(valid_node_count > sbi->total_node_count)) {
2230 spin_unlock(&sbi->stat_lock);
2231 goto enospc;
2232 }
2233
2234 sbi->total_valid_node_count++;
2235 sbi->total_valid_block_count++;
2236 spin_unlock(&sbi->stat_lock);
2237
2238 if (inode) {
2239 if (is_inode)
2240 f2fs_mark_inode_dirty_sync(inode, true);
2241 else
2242 f2fs_i_blocks_write(inode, 1, true, true);
2243 }
2244
2245 percpu_counter_inc(&sbi->alloc_valid_block_count);
2246 return 0;
2247
2248 enospc:
2249 if (is_inode) {
2250 if (inode)
2251 dquot_free_inode(inode);
2252 } else {
2253 dquot_release_reservation_block(inode, 1);
2254 }
2255 return -ENOSPC;
2256 }
2257
2258 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
2259 struct inode *inode, bool is_inode)
2260 {
2261 spin_lock(&sbi->stat_lock);
2262
2263 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
2264 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
2265
2266 sbi->total_valid_node_count--;
2267 sbi->total_valid_block_count--;
2268 if (sbi->reserved_blocks &&
2269 sbi->current_reserved_blocks < sbi->reserved_blocks)
2270 sbi->current_reserved_blocks++;
2271
2272 spin_unlock(&sbi->stat_lock);
2273
2274 if (is_inode) {
2275 dquot_free_inode(inode);
2276 } else {
2277 if (unlikely(inode->i_blocks == 0)) {
2278 f2fs_warn(sbi, "dec_valid_node_count: inconsistent i_blocks, ino:%lu, iblocks:%llu",
2279 inode->i_ino,
2280 (unsigned long long)inode->i_blocks);
2281 set_sbi_flag(sbi, SBI_NEED_FSCK);
2282 return;
2283 }
2284 f2fs_i_blocks_write(inode, 1, false, true);
2285 }
2286 }
2287
2288 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
2289 {
2290 return sbi->total_valid_node_count;
2291 }
2292
2293 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
2294 {
2295 percpu_counter_inc(&sbi->total_valid_inode_count);
2296 }
2297
2298 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
2299 {
2300 percpu_counter_dec(&sbi->total_valid_inode_count);
2301 }
2302
2303 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
2304 {
2305 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
2306 }
2307
2308 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
2309 pgoff_t index, bool for_write)
2310 {
2311 struct page *page;
2312
2313 if (IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) {
2314 if (!for_write)
2315 page = find_get_page_flags(mapping, index,
2316 FGP_LOCK | FGP_ACCESSED);
2317 else
2318 page = find_lock_page(mapping, index);
2319 if (page)
2320 return page;
2321
2322 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
2323 f2fs_show_injection_info(F2FS_M_SB(mapping),
2324 FAULT_PAGE_ALLOC);
2325 return NULL;
2326 }
2327 }
2328
2329 if (!for_write)
2330 return grab_cache_page(mapping, index);
2331 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
2332 }
2333
2334 static inline struct page *f2fs_pagecache_get_page(
2335 struct address_space *mapping, pgoff_t index,
2336 int fgp_flags, gfp_t gfp_mask)
2337 {
2338 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
2339 f2fs_show_injection_info(F2FS_M_SB(mapping), FAULT_PAGE_GET);
2340 return NULL;
2341 }
2342
2343 return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
2344 }
2345
2346 static inline void f2fs_copy_page(struct page *src, struct page *dst)
2347 {
2348 char *src_kaddr = kmap(src);
2349 char *dst_kaddr = kmap(dst);
2350
2351 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
2352 kunmap(dst);
2353 kunmap(src);
2354 }
2355
2356 static inline void f2fs_put_page(struct page *page, int unlock)
2357 {
2358 if (!page)
2359 return;
2360
2361 if (unlock) {
2362 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
2363 unlock_page(page);
2364 }
2365 put_page(page);
2366 }
2367
2368 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
2369 {
2370 if (dn->node_page)
2371 f2fs_put_page(dn->node_page, 1);
2372 if (dn->inode_page && dn->node_page != dn->inode_page)
2373 f2fs_put_page(dn->inode_page, 0);
2374 dn->node_page = NULL;
2375 dn->inode_page = NULL;
2376 }
2377
2378 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
2379 size_t size)
2380 {
2381 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
2382 }
2383
2384 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
2385 gfp_t flags)
2386 {
2387 void *entry;
2388
2389 entry = kmem_cache_alloc(cachep, flags);
2390 if (!entry)
2391 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
2392 return entry;
2393 }
2394
2395 static inline bool is_idle(struct f2fs_sb_info *sbi, int type)
2396 {
2397 if (sbi->gc_mode == GC_URGENT)
2398 return true;
2399
2400 if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) ||
2401 get_pages(sbi, F2FS_RD_META) || get_pages(sbi, F2FS_WB_DATA) ||
2402 get_pages(sbi, F2FS_WB_CP_DATA) ||
2403 get_pages(sbi, F2FS_DIO_READ) ||
2404 get_pages(sbi, F2FS_DIO_WRITE))
2405 return false;
2406
2407 if (type != DISCARD_TIME && SM_I(sbi) && SM_I(sbi)->dcc_info &&
2408 atomic_read(&SM_I(sbi)->dcc_info->queued_discard))
2409 return false;
2410
2411 if (SM_I(sbi) && SM_I(sbi)->fcc_info &&
2412 atomic_read(&SM_I(sbi)->fcc_info->queued_flush))
2413 return false;
2414
2415 return f2fs_time_over(sbi, type);
2416 }
2417
2418 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
2419 unsigned long index, void *item)
2420 {
2421 while (radix_tree_insert(root, index, item))
2422 cond_resched();
2423 }
2424
2425 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
2426
2427 static inline bool IS_INODE(struct page *page)
2428 {
2429 struct f2fs_node *p = F2FS_NODE(page);
2430
2431 return RAW_IS_INODE(p);
2432 }
2433
2434 static inline int offset_in_addr(struct f2fs_inode *i)
2435 {
2436 return (i->i_inline & F2FS_EXTRA_ATTR) ?
2437 (le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0;
2438 }
2439
2440 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
2441 {
2442 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
2443 }
2444
2445 static inline int f2fs_has_extra_attr(struct inode *inode);
2446 static inline block_t data_blkaddr(struct inode *inode,
2447 struct page *node_page, unsigned int offset)
2448 {
2449 struct f2fs_node *raw_node;
2450 __le32 *addr_array;
2451 int base = 0;
2452 bool is_inode = IS_INODE(node_page);
2453
2454 raw_node = F2FS_NODE(node_page);
2455
2456 if (is_inode) {
2457 if (!inode)
2458 /* from GC path only */
2459 base = offset_in_addr(&raw_node->i);
2460 else if (f2fs_has_extra_attr(inode))
2461 base = get_extra_isize(inode);
2462 }
2463
2464 addr_array = blkaddr_in_node(raw_node);
2465 return le32_to_cpu(addr_array[base + offset]);
2466 }
2467
2468 static inline block_t f2fs_data_blkaddr(struct dnode_of_data *dn)
2469 {
2470 return data_blkaddr(dn->inode, dn->node_page, dn->ofs_in_node);
2471 }
2472
2473 static inline int f2fs_test_bit(unsigned int nr, char *addr)
2474 {
2475 int mask;
2476
2477 addr += (nr >> 3);
2478 mask = 1 << (7 - (nr & 0x07));
2479 return mask & *addr;
2480 }
2481
2482 static inline void f2fs_set_bit(unsigned int nr, char *addr)
2483 {
2484 int mask;
2485
2486 addr += (nr >> 3);
2487 mask = 1 << (7 - (nr & 0x07));
2488 *addr |= mask;
2489 }
2490
2491 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
2492 {
2493 int mask;
2494
2495 addr += (nr >> 3);
2496 mask = 1 << (7 - (nr & 0x07));
2497 *addr &= ~mask;
2498 }
2499
2500 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
2501 {
2502 int mask;
2503 int ret;
2504
2505 addr += (nr >> 3);
2506 mask = 1 << (7 - (nr & 0x07));
2507 ret = mask & *addr;
2508 *addr |= mask;
2509 return ret;
2510 }
2511
2512 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
2513 {
2514 int mask;
2515 int ret;
2516
2517 addr += (nr >> 3);
2518 mask = 1 << (7 - (nr & 0x07));
2519 ret = mask & *addr;
2520 *addr &= ~mask;
2521 return ret;
2522 }
2523
2524 static inline void f2fs_change_bit(unsigned int nr, char *addr)
2525 {
2526 int mask;
2527
2528 addr += (nr >> 3);
2529 mask = 1 << (7 - (nr & 0x07));
2530 *addr ^= mask;
2531 }
2532
2533 /*
2534 * On-disk inode flags (f2fs_inode::i_flags)
2535 */
2536 #define F2FS_COMPR_FL 0x00000004 /* Compress file */
2537 #define F2FS_SYNC_FL 0x00000008 /* Synchronous updates */
2538 #define F2FS_IMMUTABLE_FL 0x00000010 /* Immutable file */
2539 #define F2FS_APPEND_FL 0x00000020 /* writes to file may only append */
2540 #define F2FS_NODUMP_FL 0x00000040 /* do not dump file */
2541 #define F2FS_NOATIME_FL 0x00000080 /* do not update atime */
2542 #define F2FS_NOCOMP_FL 0x00000400 /* Don't compress */
2543 #define F2FS_INDEX_FL 0x00001000 /* hash-indexed directory */
2544 #define F2FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
2545 #define F2FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
2546 #define F2FS_CASEFOLD_FL 0x40000000 /* Casefolded file */
2547
2548 /* Flags that should be inherited by new inodes from their parent. */
2549 #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
2550 F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
2551 F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
2552
2553 /* Flags that are appropriate for regular files (all but dir-specific ones). */
2554 #define F2FS_REG_FLMASK (~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
2555 F2FS_CASEFOLD_FL))
2556
2557 /* Flags that are appropriate for non-directories/regular files. */
2558 #define F2FS_OTHER_FLMASK (F2FS_NODUMP_FL | F2FS_NOATIME_FL)
2559
2560 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
2561 {
2562 if (S_ISDIR(mode))
2563 return flags;
2564 else if (S_ISREG(mode))
2565 return flags & F2FS_REG_FLMASK;
2566 else
2567 return flags & F2FS_OTHER_FLMASK;
2568 }
2569
2570 static inline void __mark_inode_dirty_flag(struct inode *inode,
2571 int flag, bool set)
2572 {
2573 switch (flag) {
2574 case FI_INLINE_XATTR:
2575 case FI_INLINE_DATA:
2576 case FI_INLINE_DENTRY:
2577 case FI_NEW_INODE:
2578 if (set)
2579 return;
2580 /* fall through */
2581 case FI_DATA_EXIST:
2582 case FI_INLINE_DOTS:
2583 case FI_PIN_FILE:
2584 f2fs_mark_inode_dirty_sync(inode, true);
2585 }
2586 }
2587
2588 static inline void set_inode_flag(struct inode *inode, int flag)
2589 {
2590 test_and_set_bit(flag, F2FS_I(inode)->flags);
2591 __mark_inode_dirty_flag(inode, flag, true);
2592 }
2593
2594 static inline int is_inode_flag_set(struct inode *inode, int flag)
2595 {
2596 return test_bit(flag, F2FS_I(inode)->flags);
2597 }
2598
2599 static inline void clear_inode_flag(struct inode *inode, int flag)
2600 {
2601 test_and_clear_bit(flag, F2FS_I(inode)->flags);
2602 __mark_inode_dirty_flag(inode, flag, false);
2603 }
2604
2605 static inline bool f2fs_verity_in_progress(struct inode *inode)
2606 {
2607 return IS_ENABLED(CONFIG_FS_VERITY) &&
2608 is_inode_flag_set(inode, FI_VERITY_IN_PROGRESS);
2609 }
2610
2611 static inline void set_acl_inode(struct inode *inode, umode_t mode)
2612 {
2613 F2FS_I(inode)->i_acl_mode = mode;
2614 set_inode_flag(inode, FI_ACL_MODE);
2615 f2fs_mark_inode_dirty_sync(inode, false);
2616 }
2617
2618 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
2619 {
2620 if (inc)
2621 inc_nlink(inode);
2622 else
2623 drop_nlink(inode);
2624 f2fs_mark_inode_dirty_sync(inode, true);
2625 }
2626
2627 static inline void f2fs_i_blocks_write(struct inode *inode,
2628 block_t diff, bool add, bool claim)
2629 {
2630 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2631 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2632
2633 /* add = 1, claim = 1 should be dquot_reserve_block in pair */
2634 if (add) {
2635 if (claim)
2636 dquot_claim_block(inode, diff);
2637 else
2638 dquot_alloc_block_nofail(inode, diff);
2639 } else {
2640 dquot_free_block(inode, diff);
2641 }
2642
2643 f2fs_mark_inode_dirty_sync(inode, true);
2644 if (clean || recover)
2645 set_inode_flag(inode, FI_AUTO_RECOVER);
2646 }
2647
2648 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
2649 {
2650 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2651 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2652
2653 if (i_size_read(inode) == i_size)
2654 return;
2655
2656 i_size_write(inode, i_size);
2657 f2fs_mark_inode_dirty_sync(inode, true);
2658 if (clean || recover)
2659 set_inode_flag(inode, FI_AUTO_RECOVER);
2660 }
2661
2662 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
2663 {
2664 F2FS_I(inode)->i_current_depth = depth;
2665 f2fs_mark_inode_dirty_sync(inode, true);
2666 }
2667
2668 static inline void f2fs_i_gc_failures_write(struct inode *inode,
2669 unsigned int count)
2670 {
2671 F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = count;
2672 f2fs_mark_inode_dirty_sync(inode, true);
2673 }
2674
2675 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
2676 {
2677 F2FS_I(inode)->i_xattr_nid = xnid;
2678 f2fs_mark_inode_dirty_sync(inode, true);
2679 }
2680
2681 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
2682 {
2683 F2FS_I(inode)->i_pino = pino;
2684 f2fs_mark_inode_dirty_sync(inode, true);
2685 }
2686
2687 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
2688 {
2689 struct f2fs_inode_info *fi = F2FS_I(inode);
2690
2691 if (ri->i_inline & F2FS_INLINE_XATTR)
2692 set_bit(FI_INLINE_XATTR, fi->flags);
2693 if (ri->i_inline & F2FS_INLINE_DATA)
2694 set_bit(FI_INLINE_DATA, fi->flags);
2695 if (ri->i_inline & F2FS_INLINE_DENTRY)
2696 set_bit(FI_INLINE_DENTRY, fi->flags);
2697 if (ri->i_inline & F2FS_DATA_EXIST)
2698 set_bit(FI_DATA_EXIST, fi->flags);
2699 if (ri->i_inline & F2FS_INLINE_DOTS)
2700 set_bit(FI_INLINE_DOTS, fi->flags);
2701 if (ri->i_inline & F2FS_EXTRA_ATTR)
2702 set_bit(FI_EXTRA_ATTR, fi->flags);
2703 if (ri->i_inline & F2FS_PIN_FILE)
2704 set_bit(FI_PIN_FILE, fi->flags);
2705 }
2706
2707 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
2708 {
2709 ri->i_inline = 0;
2710
2711 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
2712 ri->i_inline |= F2FS_INLINE_XATTR;
2713 if (is_inode_flag_set(inode, FI_INLINE_DATA))
2714 ri->i_inline |= F2FS_INLINE_DATA;
2715 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
2716 ri->i_inline |= F2FS_INLINE_DENTRY;
2717 if (is_inode_flag_set(inode, FI_DATA_EXIST))
2718 ri->i_inline |= F2FS_DATA_EXIST;
2719 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
2720 ri->i_inline |= F2FS_INLINE_DOTS;
2721 if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
2722 ri->i_inline |= F2FS_EXTRA_ATTR;
2723 if (is_inode_flag_set(inode, FI_PIN_FILE))
2724 ri->i_inline |= F2FS_PIN_FILE;
2725 }
2726
2727 static inline int f2fs_has_extra_attr(struct inode *inode)
2728 {
2729 return is_inode_flag_set(inode, FI_EXTRA_ATTR);
2730 }
2731
2732 static inline int f2fs_has_inline_xattr(struct inode *inode)
2733 {
2734 return is_inode_flag_set(inode, FI_INLINE_XATTR);
2735 }
2736
2737 static inline int f2fs_compressed_file(struct inode *inode)
2738 {
2739 return S_ISREG(inode->i_mode) &&
2740 is_inode_flag_set(inode, FI_COMPRESSED_FILE);
2741 }
2742
2743 static inline unsigned int addrs_per_inode(struct inode *inode)
2744 {
2745 unsigned int addrs = CUR_ADDRS_PER_INODE(inode) -
2746 get_inline_xattr_addrs(inode);
2747
2748 if (!f2fs_compressed_file(inode))
2749 return addrs;
2750 return ALIGN_DOWN(addrs, F2FS_I(inode)->i_cluster_size);
2751 }
2752
2753 static inline unsigned int addrs_per_block(struct inode *inode)
2754 {
2755 if (!f2fs_compressed_file(inode))
2756 return DEF_ADDRS_PER_BLOCK;
2757 return ALIGN_DOWN(DEF_ADDRS_PER_BLOCK, F2FS_I(inode)->i_cluster_size);
2758 }
2759
2760 static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
2761 {
2762 struct f2fs_inode *ri = F2FS_INODE(page);
2763
2764 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
2765 get_inline_xattr_addrs(inode)]);
2766 }
2767
2768 static inline int inline_xattr_size(struct inode *inode)
2769 {
2770 if (f2fs_has_inline_xattr(inode))
2771 return get_inline_xattr_addrs(inode) * sizeof(__le32);
2772 return 0;
2773 }
2774
2775 static inline int f2fs_has_inline_data(struct inode *inode)
2776 {
2777 return is_inode_flag_set(inode, FI_INLINE_DATA);
2778 }
2779
2780 static inline int f2fs_exist_data(struct inode *inode)
2781 {
2782 return is_inode_flag_set(inode, FI_DATA_EXIST);
2783 }
2784
2785 static inline int f2fs_has_inline_dots(struct inode *inode)
2786 {
2787 return is_inode_flag_set(inode, FI_INLINE_DOTS);
2788 }
2789
2790 static inline int f2fs_is_mmap_file(struct inode *inode)
2791 {
2792 return is_inode_flag_set(inode, FI_MMAP_FILE);
2793 }
2794
2795 static inline bool f2fs_is_pinned_file(struct inode *inode)
2796 {
2797 return is_inode_flag_set(inode, FI_PIN_FILE);
2798 }
2799
2800 static inline bool f2fs_is_atomic_file(struct inode *inode)
2801 {
2802 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
2803 }
2804
2805 static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
2806 {
2807 return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
2808 }
2809
2810 static inline bool f2fs_is_volatile_file(struct inode *inode)
2811 {
2812 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2813 }
2814
2815 static inline bool f2fs_is_first_block_written(struct inode *inode)
2816 {
2817 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2818 }
2819
2820 static inline bool f2fs_is_drop_cache(struct inode *inode)
2821 {
2822 return is_inode_flag_set(inode, FI_DROP_CACHE);
2823 }
2824
2825 static inline void *inline_data_addr(struct inode *inode, struct page *page)
2826 {
2827 struct f2fs_inode *ri = F2FS_INODE(page);
2828 int extra_size = get_extra_isize(inode);
2829
2830 return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
2831 }
2832
2833 static inline int f2fs_has_inline_dentry(struct inode *inode)
2834 {
2835 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2836 }
2837
2838 static inline int is_file(struct inode *inode, int type)
2839 {
2840 return F2FS_I(inode)->i_advise & type;
2841 }
2842
2843 static inline void set_file(struct inode *inode, int type)
2844 {
2845 F2FS_I(inode)->i_advise |= type;
2846 f2fs_mark_inode_dirty_sync(inode, true);
2847 }
2848
2849 static inline void clear_file(struct inode *inode, int type)
2850 {
2851 F2FS_I(inode)->i_advise &= ~type;
2852 f2fs_mark_inode_dirty_sync(inode, true);
2853 }
2854
2855 static inline bool f2fs_is_time_consistent(struct inode *inode)
2856 {
2857 if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime))
2858 return false;
2859 if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime))
2860 return false;
2861 if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime))
2862 return false;
2863 if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 3,
2864 &F2FS_I(inode)->i_crtime))
2865 return false;
2866 return true;
2867 }
2868
2869 static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
2870 {
2871 bool ret;
2872
2873 if (dsync) {
2874 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2875
2876 spin_lock(&sbi->inode_lock[DIRTY_META]);
2877 ret = list_empty(&F2FS_I(inode)->gdirty_list);
2878 spin_unlock(&sbi->inode_lock[DIRTY_META]);
2879 return ret;
2880 }
2881 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
2882 file_keep_isize(inode) ||
2883 i_size_read(inode) & ~PAGE_MASK)
2884 return false;
2885
2886 if (!f2fs_is_time_consistent(inode))
2887 return false;
2888
2889 spin_lock(&F2FS_I(inode)->i_size_lock);
2890 ret = F2FS_I(inode)->last_disk_size == i_size_read(inode);
2891 spin_unlock(&F2FS_I(inode)->i_size_lock);
2892
2893 return ret;
2894 }
2895
2896 static inline bool f2fs_readonly(struct super_block *sb)
2897 {
2898 return sb_rdonly(sb);
2899 }
2900
2901 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
2902 {
2903 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2904 }
2905
2906 static inline bool is_dot_dotdot(const struct qstr *str)
2907 {
2908 if (str->len == 1 && str->name[0] == '.')
2909 return true;
2910
2911 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
2912 return true;
2913
2914 return false;
2915 }
2916
2917 static inline bool f2fs_may_extent_tree(struct inode *inode)
2918 {
2919 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2920
2921 if (!test_opt(sbi, EXTENT_CACHE) ||
2922 is_inode_flag_set(inode, FI_NO_EXTENT) ||
2923 is_inode_flag_set(inode, FI_COMPRESSED_FILE))
2924 return false;
2925
2926 /*
2927 * for recovered files during mount do not create extents
2928 * if shrinker is not registered.
2929 */
2930 if (list_empty(&sbi->s_list))
2931 return false;
2932
2933 return S_ISREG(inode->i_mode);
2934 }
2935
2936 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
2937 size_t size, gfp_t flags)
2938 {
2939 if (time_to_inject(sbi, FAULT_KMALLOC)) {
2940 f2fs_show_injection_info(sbi, FAULT_KMALLOC);
2941 return NULL;
2942 }
2943
2944 return kmalloc(size, flags);
2945 }
2946
2947 static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
2948 size_t size, gfp_t flags)
2949 {
2950 return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
2951 }
2952
2953 static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi,
2954 size_t size, gfp_t flags)
2955 {
2956 if (time_to_inject(sbi, FAULT_KVMALLOC)) {
2957 f2fs_show_injection_info(sbi, FAULT_KVMALLOC);
2958 return NULL;
2959 }
2960
2961 return kvmalloc(size, flags);
2962 }
2963
2964 static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
2965 size_t size, gfp_t flags)
2966 {
2967 return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
2968 }
2969
2970 static inline int get_extra_isize(struct inode *inode)
2971 {
2972 return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
2973 }
2974
2975 static inline int get_inline_xattr_addrs(struct inode *inode)
2976 {
2977 return F2FS_I(inode)->i_inline_xattr_size;
2978 }
2979
2980 #define f2fs_get_inode_mode(i) \
2981 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
2982 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
2983
2984 #define F2FS_TOTAL_EXTRA_ATTR_SIZE \
2985 (offsetof(struct f2fs_inode, i_extra_end) - \
2986 offsetof(struct f2fs_inode, i_extra_isize)) \
2987
2988 #define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr))
2989 #define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \
2990 ((offsetof(typeof(*(f2fs_inode)), field) + \
2991 sizeof((f2fs_inode)->field)) \
2992 <= (F2FS_OLD_ATTRIBUTE_SIZE + (extra_isize))) \
2993
2994 static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
2995 {
2996 int i;
2997
2998 spin_lock(&sbi->iostat_lock);
2999 for (i = 0; i < NR_IO_TYPE; i++)
3000 sbi->write_iostat[i] = 0;
3001 spin_unlock(&sbi->iostat_lock);
3002 }
3003
3004 static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
3005 enum iostat_type type, unsigned long long io_bytes)
3006 {
3007 if (!sbi->iostat_enable)
3008 return;
3009 spin_lock(&sbi->iostat_lock);
3010 sbi->write_iostat[type] += io_bytes;
3011
3012 if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
3013 sbi->write_iostat[APP_BUFFERED_IO] =
3014 sbi->write_iostat[APP_WRITE_IO] -
3015 sbi->write_iostat[APP_DIRECT_IO];
3016 spin_unlock(&sbi->iostat_lock);
3017 }
3018
3019 #define __is_large_section(sbi) ((sbi)->segs_per_sec > 1)
3020
3021 #define __is_meta_io(fio) (PAGE_TYPE_OF_BIO((fio)->type) == META)
3022
3023 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
3024 block_t blkaddr, int type);
3025 static inline void verify_blkaddr(struct f2fs_sb_info *sbi,
3026 block_t blkaddr, int type)
3027 {
3028 if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) {
3029 f2fs_err(sbi, "invalid blkaddr: %u, type: %d, run fsck to fix.",
3030 blkaddr, type);
3031 f2fs_bug_on(sbi, 1);
3032 }
3033 }
3034
3035 static inline bool __is_valid_data_blkaddr(block_t blkaddr)
3036 {
3037 if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR ||
3038 blkaddr == COMPRESS_ADDR)
3039 return false;
3040 return true;
3041 }
3042
3043 static inline void f2fs_set_page_private(struct page *page,
3044 unsigned long data)
3045 {
3046 if (PagePrivate(page))
3047 return;
3048
3049 get_page(page);
3050 SetPagePrivate(page);
3051 set_page_private(page, data);
3052 }
3053
3054 static inline void f2fs_clear_page_private(struct page *page)
3055 {
3056 if (!PagePrivate(page))
3057 return;
3058
3059 set_page_private(page, 0);
3060 ClearPagePrivate(page);
3061 f2fs_put_page(page, 0);
3062 }
3063
3064 /*
3065 * file.c
3066 */
3067 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
3068 void f2fs_truncate_data_blocks(struct dnode_of_data *dn);
3069 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock);
3070 int f2fs_truncate(struct inode *inode);
3071 int f2fs_getattr(const struct path *path, struct kstat *stat,
3072 u32 request_mask, unsigned int flags);
3073 int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
3074 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
3075 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count);
3076 int f2fs_precache_extents(struct inode *inode);
3077 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
3078 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
3079 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid);
3080 int f2fs_pin_file_control(struct inode *inode, bool inc);
3081
3082 /*
3083 * inode.c
3084 */
3085 void f2fs_set_inode_flags(struct inode *inode);
3086 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page);
3087 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page);
3088 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
3089 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
3090 int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
3091 void f2fs_update_inode(struct inode *inode, struct page *node_page);
3092 void f2fs_update_inode_page(struct inode *inode);
3093 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
3094 void f2fs_evict_inode(struct inode *inode);
3095 void f2fs_handle_failed_inode(struct inode *inode);
3096
3097 /*
3098 * namei.c
3099 */
3100 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
3101 bool hot, bool set);
3102 struct dentry *f2fs_get_parent(struct dentry *child);
3103
3104 /*
3105 * dir.c
3106 */
3107 unsigned char f2fs_get_de_type(struct f2fs_dir_entry *de);
3108 struct f2fs_dir_entry *f2fs_find_target_dentry(struct fscrypt_name *fname,
3109 f2fs_hash_t namehash, int *max_slots,
3110 struct f2fs_dentry_ptr *d);
3111 int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
3112 unsigned int start_pos, struct fscrypt_str *fstr);
3113 void f2fs_do_make_empty_dir(struct inode *inode, struct inode *parent,
3114 struct f2fs_dentry_ptr *d);
3115 struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir,
3116 const struct qstr *new_name,
3117 const struct qstr *orig_name, struct page *dpage);
3118 void f2fs_update_parent_metadata(struct inode *dir, struct inode *inode,
3119 unsigned int current_depth);
3120 int f2fs_room_for_filename(const void *bitmap, int slots, int max_slots);
3121 void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
3122 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
3123 struct fscrypt_name *fname, struct page **res_page);
3124 struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
3125 const struct qstr *child, struct page **res_page);
3126 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
3127 ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
3128 struct page **page);
3129 void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
3130 struct page *page, struct inode *inode);
3131 bool f2fs_has_enough_room(struct inode *dir, struct page *ipage,
3132 struct fscrypt_name *fname);
3133 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
3134 const struct qstr *name, f2fs_hash_t name_hash,
3135 unsigned int bit_pos);
3136 int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
3137 const struct qstr *orig_name,
3138 struct inode *inode, nid_t ino, umode_t mode);
3139 int f2fs_add_dentry(struct inode *dir, struct fscrypt_name *fname,
3140 struct inode *inode, nid_t ino, umode_t mode);
3141 int f2fs_do_add_link(struct inode *dir, const struct qstr *name,
3142 struct inode *inode, nid_t ino, umode_t mode);
3143 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
3144 struct inode *dir, struct inode *inode);
3145 int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
3146 bool f2fs_empty_dir(struct inode *dir);
3147
3148 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
3149 {
3150 return f2fs_do_add_link(d_inode(dentry->d_parent), &dentry->d_name,
3151 inode, inode->i_ino, inode->i_mode);
3152 }
3153
3154 /*
3155 * super.c
3156 */
3157 int f2fs_inode_dirtied(struct inode *inode, bool sync);
3158 void f2fs_inode_synced(struct inode *inode);
3159 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
3160 int f2fs_quota_sync(struct super_block *sb, int type);
3161 void f2fs_quota_off_umount(struct super_block *sb);
3162 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
3163 int f2fs_sync_fs(struct super_block *sb, int sync);
3164 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi);
3165
3166 /*
3167 * hash.c
3168 */
3169 f2fs_hash_t f2fs_dentry_hash(const struct inode *dir,
3170 const struct qstr *name_info, struct fscrypt_name *fname);
3171
3172 /*
3173 * node.c
3174 */
3175 struct dnode_of_data;
3176 struct node_info;
3177
3178 int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid);
3179 bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type);
3180 bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page);
3181 void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi);
3182 void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page);
3183 void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi);
3184 int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
3185 bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
3186 bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
3187 int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid,
3188 struct node_info *ni);
3189 pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
3190 int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
3191 int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from);
3192 int f2fs_truncate_xattr_node(struct inode *inode);
3193 int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
3194 unsigned int seq_id);
3195 int f2fs_remove_inode_page(struct inode *inode);
3196 struct page *f2fs_new_inode_page(struct inode *inode);
3197 struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs);
3198 void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
3199 struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
3200 struct page *f2fs_get_node_page_ra(struct page *parent, int start);
3201 int f2fs_move_node_page(struct page *node_page, int gc_type);
3202 int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
3203 struct writeback_control *wbc, bool atomic,
3204 unsigned int *seq_id);
3205 int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
3206 struct writeback_control *wbc,
3207 bool do_balance, enum iostat_type io_type);
3208 int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
3209 bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
3210 void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
3211 void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
3212 int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
3213 void f2fs_recover_inline_xattr(struct inode *inode, struct page *page);
3214 int f2fs_recover_xattr_data(struct inode *inode, struct page *page);
3215 int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
3216 int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
3217 unsigned int segno, struct f2fs_summary_block *sum);
3218 int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3219 int f2fs_build_node_manager(struct f2fs_sb_info *sbi);
3220 void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi);
3221 int __init f2fs_create_node_manager_caches(void);
3222 void f2fs_destroy_node_manager_caches(void);
3223
3224 /*
3225 * segment.c
3226 */
3227 bool f2fs_need_SSR(struct f2fs_sb_info *sbi);
3228 void f2fs_register_inmem_page(struct inode *inode, struct page *page);
3229 void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure);
3230 void f2fs_drop_inmem_pages(struct inode *inode);
3231 void f2fs_drop_inmem_page(struct inode *inode, struct page *page);
3232 int f2fs_commit_inmem_pages(struct inode *inode);
3233 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
3234 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg);
3235 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
3236 int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi);
3237 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
3238 void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
3239 void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
3240 bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
3241 void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi);
3242 void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi);
3243 bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi);
3244 void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
3245 struct cp_control *cpc);
3246 void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi);
3247 block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi);
3248 int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable);
3249 void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi);
3250 int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
3251 void allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
3252 unsigned int start, unsigned int end);
3253 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi, int type);
3254 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
3255 bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
3256 struct cp_control *cpc);
3257 struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
3258 void f2fs_update_meta_page(struct f2fs_sb_info *sbi, void *src,
3259 block_t blk_addr);
3260 void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
3261 enum iostat_type io_type);
3262 void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio);
3263 void f2fs_outplace_write_data(struct dnode_of_data *dn,
3264 struct f2fs_io_info *fio);
3265 int f2fs_inplace_write_data(struct f2fs_io_info *fio);
3266 void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
3267 block_t old_blkaddr, block_t new_blkaddr,
3268 bool recover_curseg, bool recover_newaddr);
3269 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
3270 block_t old_addr, block_t new_addr,
3271 unsigned char version, bool recover_curseg,
3272 bool recover_newaddr);
3273 void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
3274 block_t old_blkaddr, block_t *new_blkaddr,
3275 struct f2fs_summary *sum, int type,
3276 struct f2fs_io_info *fio, bool add_list);
3277 void f2fs_wait_on_page_writeback(struct page *page,
3278 enum page_type type, bool ordered, bool locked);
3279 void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr);
3280 void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
3281 block_t len);
3282 void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
3283 void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
3284 int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
3285 unsigned int val, int alloc);
3286 void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3287 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi);
3288 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi);
3289 int f2fs_build_segment_manager(struct f2fs_sb_info *sbi);
3290 void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi);
3291 int __init f2fs_create_segment_manager_caches(void);
3292 void f2fs_destroy_segment_manager_caches(void);
3293 int f2fs_rw_hint_to_seg_type(enum rw_hint hint);
3294 enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
3295 enum page_type type, enum temp_type temp);
3296
3297 /*
3298 * checkpoint.c
3299 */
3300 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
3301 struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
3302 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
3303 struct page *f2fs_get_meta_page_nofail(struct f2fs_sb_info *sbi, pgoff_t index);
3304 struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
3305 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
3306 block_t blkaddr, int type);
3307 int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
3308 int type, bool sync);
3309 void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
3310 long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
3311 long nr_to_write, enum iostat_type io_type);
3312 void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
3313 void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
3314 void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all);
3315 bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
3316 void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
3317 unsigned int devidx, int type);
3318 bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
3319 unsigned int devidx, int type);
3320 int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
3321 int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi);
3322 void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi);
3323 void f2fs_add_orphan_inode(struct inode *inode);
3324 void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
3325 int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi);
3326 int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi);
3327 void f2fs_update_dirty_page(struct inode *inode, struct page *page);
3328 void f2fs_remove_dirty_inode(struct inode *inode);
3329 int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
3330 void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type);
3331 int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3332 void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi);
3333 int __init f2fs_create_checkpoint_caches(void);
3334 void f2fs_destroy_checkpoint_caches(void);
3335
3336 /*
3337 * data.c
3338 */
3339 int __init f2fs_init_bioset(void);
3340 void f2fs_destroy_bioset(void);
3341 struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi, int npages, bool noio);
3342 int f2fs_init_bio_entry_cache(void);
3343 void f2fs_destroy_bio_entry_cache(void);
3344 void f2fs_submit_bio(struct f2fs_sb_info *sbi,
3345 struct bio *bio, enum page_type type);
3346 void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
3347 void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
3348 struct inode *inode, struct page *page,
3349 nid_t ino, enum page_type type);
3350 void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi,
3351 struct bio **bio, struct page *page);
3352 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
3353 int f2fs_submit_page_bio(struct f2fs_io_info *fio);
3354 int f2fs_merge_page_bio(struct f2fs_io_info *fio);
3355 void f2fs_submit_page_write(struct f2fs_io_info *fio);
3356 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
3357 block_t blk_addr, struct bio *bio);
3358 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
3359 void f2fs_set_data_blkaddr(struct dnode_of_data *dn);
3360 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
3361 int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
3362 int f2fs_reserve_new_block(struct dnode_of_data *dn);
3363 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
3364 int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
3365 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
3366 int f2fs_mpage_readpages(struct address_space *mapping,
3367 struct list_head *pages, struct page *page,
3368 unsigned nr_pages, bool is_readahead);
3369 struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
3370 int op_flags, bool for_write);
3371 struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index);
3372 struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
3373 bool for_write);
3374 struct page *f2fs_get_new_data_page(struct inode *inode,
3375 struct page *ipage, pgoff_t index, bool new_i_size);
3376 int f2fs_do_write_data_page(struct f2fs_io_info *fio);
3377 void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock);
3378 int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
3379 int create, int flag);
3380 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
3381 u64 start, u64 len);
3382 int f2fs_encrypt_one_page(struct f2fs_io_info *fio);
3383 bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio);
3384 bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio);
3385 int f2fs_write_single_data_page(struct page *page, int *submitted,
3386 struct bio **bio, sector_t *last_block,
3387 struct writeback_control *wbc,
3388 enum iostat_type io_type,
3389 int compr_blocks);
3390 void f2fs_invalidate_page(struct page *page, unsigned int offset,
3391 unsigned int length);
3392 int f2fs_release_page(struct page *page, gfp_t wait);
3393 #ifdef CONFIG_MIGRATION
3394 int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
3395 struct page *page, enum migrate_mode mode);
3396 #endif
3397 bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len);
3398 void f2fs_clear_page_cache_dirty_tag(struct page *page);
3399 int f2fs_init_post_read_processing(void);
3400 void f2fs_destroy_post_read_processing(void);
3401 int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi);
3402 void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi);
3403
3404 /*
3405 * gc.c
3406 */
3407 int f2fs_start_gc_thread(struct f2fs_sb_info *sbi);
3408 void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi);
3409 block_t f2fs_start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
3410 int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
3411 unsigned int segno);
3412 void f2fs_build_gc_manager(struct f2fs_sb_info *sbi);
3413 int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count);
3414
3415 /*
3416 * recovery.c
3417 */
3418 int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
3419 bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi);
3420
3421 /*
3422 * debug.c
3423 */
3424 #ifdef CONFIG_F2FS_STAT_FS
3425 struct f2fs_stat_info {
3426 struct list_head stat_list;
3427 struct f2fs_sb_info *sbi;
3428 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
3429 int main_area_segs, main_area_sections, main_area_zones;
3430 unsigned long long hit_largest, hit_cached, hit_rbtree;
3431 unsigned long long hit_total, total_ext;
3432 int ext_tree, zombie_tree, ext_node;
3433 int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
3434 int ndirty_data, ndirty_qdata;
3435 int inmem_pages;
3436 unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
3437 int nats, dirty_nats, sits, dirty_sits;
3438 int free_nids, avail_nids, alloc_nids;
3439 int total_count, utilization;
3440 int bg_gc, nr_wb_cp_data, nr_wb_data;
3441 int nr_rd_data, nr_rd_node, nr_rd_meta;
3442 int nr_dio_read, nr_dio_write;
3443 unsigned int io_skip_bggc, other_skip_bggc;
3444 int nr_flushing, nr_flushed, flush_list_empty;
3445 int nr_discarding, nr_discarded;
3446 int nr_discard_cmd;
3447 unsigned int undiscard_blks;
3448 int inline_xattr, inline_inode, inline_dir, append, update, orphans;
3449 int compr_inode, compr_blocks;
3450 int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
3451 unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
3452 unsigned int bimodal, avg_vblocks;
3453 int util_free, util_valid, util_invalid;
3454 int rsvd_segs, overp_segs;
3455 int dirty_count, node_pages, meta_pages;
3456 int prefree_count, call_count, cp_count, bg_cp_count;
3457 int tot_segs, node_segs, data_segs, free_segs, free_secs;
3458 int bg_node_segs, bg_data_segs;
3459 int tot_blks, data_blks, node_blks;
3460 int bg_data_blks, bg_node_blks;
3461 unsigned long long skipped_atomic_files[2];
3462 int curseg[NR_CURSEG_TYPE];
3463 int cursec[NR_CURSEG_TYPE];
3464 int curzone[NR_CURSEG_TYPE];
3465
3466 unsigned int meta_count[META_MAX];
3467 unsigned int segment_count[2];
3468 unsigned int block_count[2];
3469 unsigned int inplace_count;
3470 unsigned long long base_mem, cache_mem, page_mem;
3471 };
3472
3473 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
3474 {
3475 return (struct f2fs_stat_info *)sbi->stat_info;
3476 }
3477
3478 #define stat_inc_cp_count(si) ((si)->cp_count++)
3479 #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
3480 #define stat_inc_call_count(si) ((si)->call_count++)
3481 #define stat_inc_bggc_count(si) ((si)->bg_gc++)
3482 #define stat_io_skip_bggc_count(sbi) ((sbi)->io_skip_bggc++)
3483 #define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++)
3484 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
3485 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
3486 #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
3487 #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
3488 #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
3489 #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
3490 #define stat_inc_inline_xattr(inode) \
3491 do { \
3492 if (f2fs_has_inline_xattr(inode)) \
3493 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
3494 } while (0)
3495 #define stat_dec_inline_xattr(inode) \
3496 do { \
3497 if (f2fs_has_inline_xattr(inode)) \
3498 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
3499 } while (0)
3500 #define stat_inc_inline_inode(inode) \
3501 do { \
3502 if (f2fs_has_inline_data(inode)) \
3503 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
3504 } while (0)
3505 #define stat_dec_inline_inode(inode) \
3506 do { \
3507 if (f2fs_has_inline_data(inode)) \
3508 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
3509 } while (0)
3510 #define stat_inc_inline_dir(inode) \
3511 do { \
3512 if (f2fs_has_inline_dentry(inode)) \
3513 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
3514 } while (0)
3515 #define stat_dec_inline_dir(inode) \
3516 do { \
3517 if (f2fs_has_inline_dentry(inode)) \
3518 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
3519 } while (0)
3520 #define stat_inc_compr_inode(inode) \
3521 do { \
3522 if (f2fs_compressed_file(inode)) \
3523 (atomic_inc(&F2FS_I_SB(inode)->compr_inode)); \
3524 } while (0)
3525 #define stat_dec_compr_inode(inode) \
3526 do { \
3527 if (f2fs_compressed_file(inode)) \
3528 (atomic_dec(&F2FS_I_SB(inode)->compr_inode)); \
3529 } while (0)
3530 #define stat_add_compr_blocks(inode, blocks) \
3531 (atomic_add(blocks, &F2FS_I_SB(inode)->compr_blocks))
3532 #define stat_sub_compr_blocks(inode, blocks) \
3533 (atomic_sub(blocks, &F2FS_I_SB(inode)->compr_blocks))
3534 #define stat_inc_meta_count(sbi, blkaddr) \
3535 do { \
3536 if (blkaddr < SIT_I(sbi)->sit_base_addr) \
3537 atomic_inc(&(sbi)->meta_count[META_CP]); \
3538 else if (blkaddr < NM_I(sbi)->nat_blkaddr) \
3539 atomic_inc(&(sbi)->meta_count[META_SIT]); \
3540 else if (blkaddr < SM_I(sbi)->ssa_blkaddr) \
3541 atomic_inc(&(sbi)->meta_count[META_NAT]); \
3542 else if (blkaddr < SM_I(sbi)->main_blkaddr) \
3543 atomic_inc(&(sbi)->meta_count[META_SSA]); \
3544 } while (0)
3545 #define stat_inc_seg_type(sbi, curseg) \
3546 ((sbi)->segment_count[(curseg)->alloc_type]++)
3547 #define stat_inc_block_count(sbi, curseg) \
3548 ((sbi)->block_count[(curseg)->alloc_type]++)
3549 #define stat_inc_inplace_blocks(sbi) \
3550 (atomic_inc(&(sbi)->inplace_count))
3551 #define stat_update_max_atomic_write(inode) \
3552 do { \
3553 int cur = F2FS_I_SB(inode)->atomic_files; \
3554 int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \
3555 if (cur > max) \
3556 atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
3557 } while (0)
3558 #define stat_inc_volatile_write(inode) \
3559 (atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
3560 #define stat_dec_volatile_write(inode) \
3561 (atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
3562 #define stat_update_max_volatile_write(inode) \
3563 do { \
3564 int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \
3565 int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \
3566 if (cur > max) \
3567 atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \
3568 } while (0)
3569 #define stat_inc_seg_count(sbi, type, gc_type) \
3570 do { \
3571 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3572 si->tot_segs++; \
3573 if ((type) == SUM_TYPE_DATA) { \
3574 si->data_segs++; \
3575 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
3576 } else { \
3577 si->node_segs++; \
3578 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
3579 } \
3580 } while (0)
3581
3582 #define stat_inc_tot_blk_count(si, blks) \
3583 ((si)->tot_blks += (blks))
3584
3585 #define stat_inc_data_blk_count(sbi, blks, gc_type) \
3586 do { \
3587 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3588 stat_inc_tot_blk_count(si, blks); \
3589 si->data_blks += (blks); \
3590 si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
3591 } while (0)
3592
3593 #define stat_inc_node_blk_count(sbi, blks, gc_type) \
3594 do { \
3595 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
3596 stat_inc_tot_blk_count(si, blks); \
3597 si->node_blks += (blks); \
3598 si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
3599 } while (0)
3600
3601 int f2fs_build_stats(struct f2fs_sb_info *sbi);
3602 void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
3603 void __init f2fs_create_root_stats(void);
3604 void f2fs_destroy_root_stats(void);
3605 void f2fs_update_sit_info(struct f2fs_sb_info *sbi);
3606 #else
3607 #define stat_inc_cp_count(si) do { } while (0)
3608 #define stat_inc_bg_cp_count(si) do { } while (0)
3609 #define stat_inc_call_count(si) do { } while (0)
3610 #define stat_inc_bggc_count(si) do { } while (0)
3611 #define stat_io_skip_bggc_count(sbi) do { } while (0)
3612 #define stat_other_skip_bggc_count(sbi) do { } while (0)
3613 #define stat_inc_dirty_inode(sbi, type) do { } while (0)
3614 #define stat_dec_dirty_inode(sbi, type) do { } while (0)
3615 #define stat_inc_total_hit(sbi) do { } while (0)
3616 #define stat_inc_rbtree_node_hit(sbi) do { } while (0)
3617 #define stat_inc_largest_node_hit(sbi) do { } while (0)
3618 #define stat_inc_cached_node_hit(sbi) do { } while (0)
3619 #define stat_inc_inline_xattr(inode) do { } while (0)
3620 #define stat_dec_inline_xattr(inode) do { } while (0)
3621 #define stat_inc_inline_inode(inode) do { } while (0)
3622 #define stat_dec_inline_inode(inode) do { } while (0)
3623 #define stat_inc_inline_dir(inode) do { } while (0)
3624 #define stat_dec_inline_dir(inode) do { } while (0)
3625 #define stat_inc_compr_inode(inode) do { } while (0)
3626 #define stat_dec_compr_inode(inode) do { } while (0)
3627 #define stat_add_compr_blocks(inode, blocks) do { } while (0)
3628 #define stat_sub_compr_blocks(inode, blocks) do { } while (0)
3629 #define stat_inc_atomic_write(inode) do { } while (0)
3630 #define stat_dec_atomic_write(inode) do { } while (0)
3631 #define stat_update_max_atomic_write(inode) do { } while (0)
3632 #define stat_inc_volatile_write(inode) do { } while (0)
3633 #define stat_dec_volatile_write(inode) do { } while (0)
3634 #define stat_update_max_volatile_write(inode) do { } while (0)
3635 #define stat_inc_meta_count(sbi, blkaddr) do { } while (0)
3636 #define stat_inc_seg_type(sbi, curseg) do { } while (0)
3637 #define stat_inc_block_count(sbi, curseg) do { } while (0)
3638 #define stat_inc_inplace_blocks(sbi) do { } while (0)
3639 #define stat_inc_seg_count(sbi, type, gc_type) do { } while (0)
3640 #define stat_inc_tot_blk_count(si, blks) do { } while (0)
3641 #define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0)
3642 #define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0)
3643
3644 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
3645 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
3646 static inline void __init f2fs_create_root_stats(void) { }
3647 static inline void f2fs_destroy_root_stats(void) { }
3648 static inline void f2fs_update_sit_info(struct f2fs_sb_info *sbi) {}
3649 #endif
3650
3651 extern const struct file_operations f2fs_dir_operations;
3652 #ifdef CONFIG_UNICODE
3653 extern const struct dentry_operations f2fs_dentry_ops;
3654 #endif
3655 extern const struct file_operations f2fs_file_operations;
3656 extern const struct inode_operations f2fs_file_inode_operations;
3657 extern const struct address_space_operations f2fs_dblock_aops;
3658 extern const struct address_space_operations f2fs_node_aops;
3659 extern const struct address_space_operations f2fs_meta_aops;
3660 extern const struct inode_operations f2fs_dir_inode_operations;
3661 extern const struct inode_operations f2fs_symlink_inode_operations;
3662 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
3663 extern const struct inode_operations f2fs_special_inode_operations;
3664 extern struct kmem_cache *f2fs_inode_entry_slab;
3665
3666 /*
3667 * inline.c
3668 */
3669 bool f2fs_may_inline_data(struct inode *inode);
3670 bool f2fs_may_inline_dentry(struct inode *inode);
3671 void f2fs_do_read_inline_data(struct page *page, struct page *ipage);
3672 void f2fs_truncate_inline_inode(struct inode *inode,
3673 struct page *ipage, u64 from);
3674 int f2fs_read_inline_data(struct inode *inode, struct page *page);
3675 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
3676 int f2fs_convert_inline_inode(struct inode *inode);
3677 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry);
3678 int f2fs_write_inline_data(struct inode *inode, struct page *page);
3679 bool f2fs_recover_inline_data(struct inode *inode, struct page *npage);
3680 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
3681 struct fscrypt_name *fname, struct page **res_page);
3682 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
3683 struct page *ipage);
3684 int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
3685 const struct qstr *orig_name,
3686 struct inode *inode, nid_t ino, umode_t mode);
3687 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry,
3688 struct page *page, struct inode *dir,
3689 struct inode *inode);
3690 bool f2fs_empty_inline_dir(struct inode *dir);
3691 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
3692 struct fscrypt_str *fstr);
3693 int f2fs_inline_data_fiemap(struct inode *inode,
3694 struct fiemap_extent_info *fieinfo,
3695 __u64 start, __u64 len);
3696
3697 /*
3698 * shrinker.c
3699 */
3700 unsigned long f2fs_shrink_count(struct shrinker *shrink,
3701 struct shrink_control *sc);
3702 unsigned long f2fs_shrink_scan(struct shrinker *shrink,
3703 struct shrink_control *sc);
3704 void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
3705 void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
3706
3707 /*
3708 * extent_cache.c
3709 */
3710 struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root,
3711 struct rb_entry *cached_re, unsigned int ofs);
3712 struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
3713 struct rb_root_cached *root,
3714 struct rb_node **parent,
3715 unsigned int ofs, bool *leftmost);
3716 struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root,
3717 struct rb_entry *cached_re, unsigned int ofs,
3718 struct rb_entry **prev_entry, struct rb_entry **next_entry,
3719 struct rb_node ***insert_p, struct rb_node **insert_parent,
3720 bool force, bool *leftmost);
3721 bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
3722 struct rb_root_cached *root);
3723 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
3724 bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext);
3725 void f2fs_drop_extent_tree(struct inode *inode);
3726 unsigned int f2fs_destroy_extent_node(struct inode *inode);
3727 void f2fs_destroy_extent_tree(struct inode *inode);
3728 bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
3729 struct extent_info *ei);
3730 void f2fs_update_extent_cache(struct dnode_of_data *dn);
3731 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
3732 pgoff_t fofs, block_t blkaddr, unsigned int len);
3733 void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi);
3734 int __init f2fs_create_extent_cache(void);
3735 void f2fs_destroy_extent_cache(void);
3736
3737 /*
3738 * sysfs.c
3739 */
3740 int __init f2fs_init_sysfs(void);
3741 void f2fs_exit_sysfs(void);
3742 int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
3743 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
3744
3745 /* verity.c */
3746 extern const struct fsverity_operations f2fs_verityops;
3747
3748 /*
3749 * crypto support
3750 */
3751 static inline bool f2fs_encrypted_file(struct inode *inode)
3752 {
3753 return IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode);
3754 }
3755
3756 static inline void f2fs_set_encrypted_inode(struct inode *inode)
3757 {
3758 #ifdef CONFIG_FS_ENCRYPTION
3759 file_set_encrypt(inode);
3760 f2fs_set_inode_flags(inode);
3761 #endif
3762 }
3763
3764 /*
3765 * Returns true if the reads of the inode's data need to undergo some
3766 * postprocessing step, like decryption or authenticity verification.
3767 */
3768 static inline bool f2fs_post_read_required(struct inode *inode)
3769 {
3770 return f2fs_encrypted_file(inode) || fsverity_active(inode) ||
3771 f2fs_compressed_file(inode);
3772 }
3773
3774 /*
3775 * compress.c
3776 */
3777 #ifdef CONFIG_F2FS_FS_COMPRESSION
3778 bool f2fs_is_compressed_page(struct page *page);
3779 struct page *f2fs_compress_control_page(struct page *page);
3780 int f2fs_prepare_compress_overwrite(struct inode *inode,
3781 struct page **pagep, pgoff_t index, void **fsdata);
3782 bool f2fs_compress_write_end(struct inode *inode, void *fsdata,
3783 pgoff_t index, unsigned copied);
3784 void f2fs_compress_write_end_io(struct bio *bio, struct page *page);
3785 bool f2fs_is_compress_backend_ready(struct inode *inode);
3786 void f2fs_decompress_pages(struct bio *bio, struct page *page, bool verity);
3787 bool f2fs_cluster_is_empty(struct compress_ctx *cc);
3788 bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index);
3789 void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page);
3790 int f2fs_write_multi_pages(struct compress_ctx *cc,
3791 int *submitted,
3792 struct writeback_control *wbc,
3793 enum iostat_type io_type);
3794 int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index);
3795 int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
3796 unsigned nr_pages, sector_t *last_block_in_bio,
3797 bool is_readahead, bool for_write);
3798 struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc);
3799 void f2fs_free_dic(struct decompress_io_ctx *dic);
3800 void f2fs_decompress_end_io(struct page **rpages,
3801 unsigned int cluster_size, bool err, bool verity);
3802 int f2fs_init_compress_ctx(struct compress_ctx *cc);
3803 void f2fs_destroy_compress_ctx(struct compress_ctx *cc);
3804 void f2fs_init_compress_info(struct f2fs_sb_info *sbi);
3805 #else
3806 static inline bool f2fs_is_compressed_page(struct page *page) { return false; }
3807 static inline bool f2fs_is_compress_backend_ready(struct inode *inode)
3808 {
3809 if (!f2fs_compressed_file(inode))
3810 return true;
3811 /* not support compression */
3812 return false;
3813 }
3814 static inline struct page *f2fs_compress_control_page(struct page *page)
3815 {
3816 WARN_ON_ONCE(1);
3817 return ERR_PTR(-EINVAL);
3818 }
3819 #endif
3820
3821 static inline void set_compress_context(struct inode *inode)
3822 {
3823 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3824
3825 F2FS_I(inode)->i_compress_algorithm =
3826 F2FS_OPTION(sbi).compress_algorithm;
3827 F2FS_I(inode)->i_log_cluster_size =
3828 F2FS_OPTION(sbi).compress_log_size;
3829 F2FS_I(inode)->i_cluster_size =
3830 1 << F2FS_I(inode)->i_log_cluster_size;
3831 F2FS_I(inode)->i_flags |= F2FS_COMPR_FL;
3832 set_inode_flag(inode, FI_COMPRESSED_FILE);
3833 stat_inc_compr_inode(inode);
3834 f2fs_mark_inode_dirty_sync(inode, true);
3835 }
3836
3837 static inline u64 f2fs_disable_compressed_file(struct inode *inode)
3838 {
3839 struct f2fs_inode_info *fi = F2FS_I(inode);
3840
3841 if (!f2fs_compressed_file(inode))
3842 return 0;
3843 if (S_ISREG(inode->i_mode)) {
3844 if (get_dirty_pages(inode))
3845 return 1;
3846 if (fi->i_compr_blocks)
3847 return fi->i_compr_blocks;
3848 }
3849
3850 fi->i_flags &= ~F2FS_COMPR_FL;
3851 stat_dec_compr_inode(inode);
3852 clear_inode_flag(inode, FI_COMPRESSED_FILE);
3853 f2fs_mark_inode_dirty_sync(inode, true);
3854 return 0;
3855 }
3856
3857 #define F2FS_FEATURE_FUNCS(name, flagname) \
3858 static inline int f2fs_sb_has_##name(struct f2fs_sb_info *sbi) \
3859 { \
3860 return F2FS_HAS_FEATURE(sbi, F2FS_FEATURE_##flagname); \
3861 }
3862
3863 F2FS_FEATURE_FUNCS(encrypt, ENCRYPT);
3864 F2FS_FEATURE_FUNCS(blkzoned, BLKZONED);
3865 F2FS_FEATURE_FUNCS(extra_attr, EXTRA_ATTR);
3866 F2FS_FEATURE_FUNCS(project_quota, PRJQUOTA);
3867 F2FS_FEATURE_FUNCS(inode_chksum, INODE_CHKSUM);
3868 F2FS_FEATURE_FUNCS(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
3869 F2FS_FEATURE_FUNCS(quota_ino, QUOTA_INO);
3870 F2FS_FEATURE_FUNCS(inode_crtime, INODE_CRTIME);
3871 F2FS_FEATURE_FUNCS(lost_found, LOST_FOUND);
3872 F2FS_FEATURE_FUNCS(verity, VERITY);
3873 F2FS_FEATURE_FUNCS(sb_chksum, SB_CHKSUM);
3874 F2FS_FEATURE_FUNCS(casefold, CASEFOLD);
3875 F2FS_FEATURE_FUNCS(compression, COMPRESSION);
3876
3877 #ifdef CONFIG_BLK_DEV_ZONED
3878 static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi,
3879 block_t blkaddr)
3880 {
3881 unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
3882
3883 return test_bit(zno, FDEV(devi).blkz_seq);
3884 }
3885 #endif
3886
3887 static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi)
3888 {
3889 return f2fs_sb_has_blkzoned(sbi);
3890 }
3891
3892 static inline bool f2fs_bdev_support_discard(struct block_device *bdev)
3893 {
3894 return blk_queue_discard(bdev_get_queue(bdev)) ||
3895 bdev_is_zoned(bdev);
3896 }
3897
3898 static inline bool f2fs_hw_support_discard(struct f2fs_sb_info *sbi)
3899 {
3900 int i;
3901
3902 if (!f2fs_is_multi_device(sbi))
3903 return f2fs_bdev_support_discard(sbi->sb->s_bdev);
3904
3905 for (i = 0; i < sbi->s_ndevs; i++)
3906 if (f2fs_bdev_support_discard(FDEV(i).bdev))
3907 return true;
3908 return false;
3909 }
3910
3911 static inline bool f2fs_realtime_discard_enable(struct f2fs_sb_info *sbi)
3912 {
3913 return (test_opt(sbi, DISCARD) && f2fs_hw_support_discard(sbi)) ||
3914 f2fs_hw_should_discard(sbi);
3915 }
3916
3917 static inline bool f2fs_hw_is_readonly(struct f2fs_sb_info *sbi)
3918 {
3919 int i;
3920
3921 if (!f2fs_is_multi_device(sbi))
3922 return bdev_read_only(sbi->sb->s_bdev);
3923
3924 for (i = 0; i < sbi->s_ndevs; i++)
3925 if (bdev_read_only(FDEV(i).bdev))
3926 return true;
3927 return false;
3928 }
3929
3930 static inline bool f2fs_lfs_mode(struct f2fs_sb_info *sbi)
3931 {
3932 return F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS;
3933 }
3934
3935 static inline bool f2fs_may_encrypt(struct inode *dir, struct inode *inode)
3936 {
3937 #ifdef CONFIG_FS_ENCRYPTION
3938 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
3939 umode_t mode = inode->i_mode;
3940
3941 /*
3942 * If the directory encrypted or dummy encryption enabled,
3943 * then we should encrypt the inode.
3944 */
3945 if (IS_ENCRYPTED(dir) || DUMMY_ENCRYPTION_ENABLED(sbi))
3946 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
3947 #endif
3948 return false;
3949 }
3950
3951 static inline bool f2fs_may_compress(struct inode *inode)
3952 {
3953 if (IS_SWAPFILE(inode) || f2fs_is_pinned_file(inode) ||
3954 f2fs_is_atomic_file(inode) ||
3955 f2fs_is_volatile_file(inode))
3956 return false;
3957 return S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode);
3958 }
3959
3960 static inline void f2fs_i_compr_blocks_update(struct inode *inode,
3961 u64 blocks, bool add)
3962 {
3963 int diff = F2FS_I(inode)->i_cluster_size - blocks;
3964
3965 if (add) {
3966 F2FS_I(inode)->i_compr_blocks += diff;
3967 stat_add_compr_blocks(inode, diff);
3968 } else {
3969 F2FS_I(inode)->i_compr_blocks -= diff;
3970 stat_sub_compr_blocks(inode, diff);
3971 }
3972 f2fs_mark_inode_dirty_sync(inode, true);
3973 }
3974
3975 static inline int block_unaligned_IO(struct inode *inode,
3976 struct kiocb *iocb, struct iov_iter *iter)
3977 {
3978 unsigned int i_blkbits = READ_ONCE(inode->i_blkbits);
3979 unsigned int blocksize_mask = (1 << i_blkbits) - 1;
3980 loff_t offset = iocb->ki_pos;
3981 unsigned long align = offset | iov_iter_alignment(iter);
3982
3983 return align & blocksize_mask;
3984 }
3985
3986 static inline int allow_outplace_dio(struct inode *inode,
3987 struct kiocb *iocb, struct iov_iter *iter)
3988 {
3989 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3990 int rw = iov_iter_rw(iter);
3991
3992 return (f2fs_lfs_mode(sbi) && (rw == WRITE) &&
3993 !block_unaligned_IO(inode, iocb, iter));
3994 }
3995
3996 static inline bool f2fs_force_buffered_io(struct inode *inode,
3997 struct kiocb *iocb, struct iov_iter *iter)
3998 {
3999 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4000 int rw = iov_iter_rw(iter);
4001
4002 if (f2fs_post_read_required(inode))
4003 return true;
4004 if (f2fs_is_multi_device(sbi))
4005 return true;
4006 if (f2fs_compressed_file(inode))
4007 return true;
4008 /*
4009 * for blkzoned device, fallback direct IO to buffered IO, so
4010 * all IOs can be serialized by log-structured write.
4011 */
4012 if (f2fs_sb_has_blkzoned(sbi))
4013 return true;
4014 if (f2fs_lfs_mode(sbi) && (rw == WRITE)) {
4015 if (block_unaligned_IO(inode, iocb, iter))
4016 return true;
4017 if (F2FS_IO_ALIGNED(sbi))
4018 return true;
4019 }
4020 if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED) &&
4021 !IS_SWAPFILE(inode))
4022 return true;
4023
4024 return false;
4025 }
4026
4027 #ifdef CONFIG_F2FS_FAULT_INJECTION
4028 extern void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
4029 unsigned int type);
4030 #else
4031 #define f2fs_build_fault_attr(sbi, rate, type) do { } while (0)
4032 #endif
4033
4034 static inline bool is_journalled_quota(struct f2fs_sb_info *sbi)
4035 {
4036 #ifdef CONFIG_QUOTA
4037 if (f2fs_sb_has_quota_ino(sbi))
4038 return true;
4039 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
4040 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
4041 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4042 return true;
4043 #endif
4044 return false;
4045 }
4046
4047 #define EFSBADCRC EBADMSG /* Bad CRC detected */
4048 #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
4049
4050 #endif /* _LINUX_F2FS_H */
Linux with added FPC-III support