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8#include <linux/module.h>
9#include <linux/init.h>
10#include <linux/fs.h>
11#include <linux/sched/mm.h>
12#include <linux/statfs.h>
13#include <linux/buffer_head.h>
14#include <linux/kthread.h>
15#include <linux/parser.h>
16#include <linux/mount.h>
17#include <linux/seq_file.h>
18#include <linux/proc_fs.h>
19#include <linux/random.h>
20#include <linux/exportfs.h>
21#include <linux/blkdev.h>
22#include <linux/quotaops.h>
23#include <linux/f2fs_fs.h>
24#include <linux/sysfs.h>
25#include <linux/quota.h>
26#include <linux/unicode.h>
27#include <linux/part_stat.h>
28#include <linux/zstd.h>
29#include <linux/lz4.h>
30
31#include "f2fs.h"
32#include "node.h"
33#include "segment.h"
34#include "xattr.h"
35#include "gc.h"
36#include "iostat.h"
37
38#define CREATE_TRACE_POINTS
39#include <trace/events/f2fs.h>
40
41static struct kmem_cache *f2fs_inode_cachep;
42
43#ifdef CONFIG_F2FS_FAULT_INJECTION
44
45const char *f2fs_fault_name[FAULT_MAX] = {
46 [FAULT_KMALLOC] = "kmalloc",
47 [FAULT_KVMALLOC] = "kvmalloc",
48 [FAULT_PAGE_ALLOC] = "page alloc",
49 [FAULT_PAGE_GET] = "page get",
50 [FAULT_ALLOC_NID] = "alloc nid",
51 [FAULT_ORPHAN] = "orphan",
52 [FAULT_BLOCK] = "no more block",
53 [FAULT_DIR_DEPTH] = "too big dir depth",
54 [FAULT_EVICT_INODE] = "evict_inode fail",
55 [FAULT_TRUNCATE] = "truncate fail",
56 [FAULT_READ_IO] = "read IO error",
57 [FAULT_CHECKPOINT] = "checkpoint error",
58 [FAULT_DISCARD] = "discard error",
59 [FAULT_WRITE_IO] = "write IO error",
60 [FAULT_SLAB_ALLOC] = "slab alloc",
61 [FAULT_DQUOT_INIT] = "dquot initialize",
62 [FAULT_LOCK_OP] = "lock_op",
63};
64
65void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
66 unsigned int type)
67{
68 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
69
70 if (rate) {
71 atomic_set(&ffi->inject_ops, 0);
72 ffi->inject_rate = rate;
73 }
74
75 if (type)
76 ffi->inject_type = type;
77
78 if (!rate && !type)
79 memset(ffi, 0, sizeof(struct f2fs_fault_info));
80}
81#endif
82
83
84static struct shrinker f2fs_shrinker_info = {
85 .scan_objects = f2fs_shrink_scan,
86 .count_objects = f2fs_shrink_count,
87 .seeks = DEFAULT_SEEKS,
88};
89
90enum {
91 Opt_gc_background,
92 Opt_disable_roll_forward,
93 Opt_norecovery,
94 Opt_discard,
95 Opt_nodiscard,
96 Opt_noheap,
97 Opt_heap,
98 Opt_user_xattr,
99 Opt_nouser_xattr,
100 Opt_acl,
101 Opt_noacl,
102 Opt_active_logs,
103 Opt_disable_ext_identify,
104 Opt_inline_xattr,
105 Opt_noinline_xattr,
106 Opt_inline_xattr_size,
107 Opt_inline_data,
108 Opt_inline_dentry,
109 Opt_noinline_dentry,
110 Opt_flush_merge,
111 Opt_noflush_merge,
112 Opt_nobarrier,
113 Opt_fastboot,
114 Opt_extent_cache,
115 Opt_noextent_cache,
116 Opt_noinline_data,
117 Opt_data_flush,
118 Opt_reserve_root,
119 Opt_resgid,
120 Opt_resuid,
121 Opt_mode,
122 Opt_io_size_bits,
123 Opt_fault_injection,
124 Opt_fault_type,
125 Opt_lazytime,
126 Opt_nolazytime,
127 Opt_quota,
128 Opt_noquota,
129 Opt_usrquota,
130 Opt_grpquota,
131 Opt_prjquota,
132 Opt_usrjquota,
133 Opt_grpjquota,
134 Opt_prjjquota,
135 Opt_offusrjquota,
136 Opt_offgrpjquota,
137 Opt_offprjjquota,
138 Opt_jqfmt_vfsold,
139 Opt_jqfmt_vfsv0,
140 Opt_jqfmt_vfsv1,
141 Opt_whint,
142 Opt_alloc,
143 Opt_fsync,
144 Opt_test_dummy_encryption,
145 Opt_inlinecrypt,
146 Opt_checkpoint_disable,
147 Opt_checkpoint_disable_cap,
148 Opt_checkpoint_disable_cap_perc,
149 Opt_checkpoint_enable,
150 Opt_checkpoint_merge,
151 Opt_nocheckpoint_merge,
152 Opt_compress_algorithm,
153 Opt_compress_log_size,
154 Opt_compress_extension,
155 Opt_nocompress_extension,
156 Opt_compress_chksum,
157 Opt_compress_mode,
158 Opt_compress_cache,
159 Opt_atgc,
160 Opt_gc_merge,
161 Opt_nogc_merge,
162 Opt_discard_unit,
163 Opt_err,
164};
165
166static match_table_t f2fs_tokens = {
167 {Opt_gc_background, "background_gc=%s"},
168 {Opt_disable_roll_forward, "disable_roll_forward"},
169 {Opt_norecovery, "norecovery"},
170 {Opt_discard, "discard"},
171 {Opt_nodiscard, "nodiscard"},
172 {Opt_noheap, "no_heap"},
173 {Opt_heap, "heap"},
174 {Opt_user_xattr, "user_xattr"},
175 {Opt_nouser_xattr, "nouser_xattr"},
176 {Opt_acl, "acl"},
177 {Opt_noacl, "noacl"},
178 {Opt_active_logs, "active_logs=%u"},
179 {Opt_disable_ext_identify, "disable_ext_identify"},
180 {Opt_inline_xattr, "inline_xattr"},
181 {Opt_noinline_xattr, "noinline_xattr"},
182 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
183 {Opt_inline_data, "inline_data"},
184 {Opt_inline_dentry, "inline_dentry"},
185 {Opt_noinline_dentry, "noinline_dentry"},
186 {Opt_flush_merge, "flush_merge"},
187 {Opt_noflush_merge, "noflush_merge"},
188 {Opt_nobarrier, "nobarrier"},
189 {Opt_fastboot, "fastboot"},
190 {Opt_extent_cache, "extent_cache"},
191 {Opt_noextent_cache, "noextent_cache"},
192 {Opt_noinline_data, "noinline_data"},
193 {Opt_data_flush, "data_flush"},
194 {Opt_reserve_root, "reserve_root=%u"},
195 {Opt_resgid, "resgid=%u"},
196 {Opt_resuid, "resuid=%u"},
197 {Opt_mode, "mode=%s"},
198 {Opt_io_size_bits, "io_bits=%u"},
199 {Opt_fault_injection, "fault_injection=%u"},
200 {Opt_fault_type, "fault_type=%u"},
201 {Opt_lazytime, "lazytime"},
202 {Opt_nolazytime, "nolazytime"},
203 {Opt_quota, "quota"},
204 {Opt_noquota, "noquota"},
205 {Opt_usrquota, "usrquota"},
206 {Opt_grpquota, "grpquota"},
207 {Opt_prjquota, "prjquota"},
208 {Opt_usrjquota, "usrjquota=%s"},
209 {Opt_grpjquota, "grpjquota=%s"},
210 {Opt_prjjquota, "prjjquota=%s"},
211 {Opt_offusrjquota, "usrjquota="},
212 {Opt_offgrpjquota, "grpjquota="},
213 {Opt_offprjjquota, "prjjquota="},
214 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
215 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
216 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
217 {Opt_whint, "whint_mode=%s"},
218 {Opt_alloc, "alloc_mode=%s"},
219 {Opt_fsync, "fsync_mode=%s"},
220 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
221 {Opt_test_dummy_encryption, "test_dummy_encryption"},
222 {Opt_inlinecrypt, "inlinecrypt"},
223 {Opt_checkpoint_disable, "checkpoint=disable"},
224 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
225 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
226 {Opt_checkpoint_enable, "checkpoint=enable"},
227 {Opt_checkpoint_merge, "checkpoint_merge"},
228 {Opt_nocheckpoint_merge, "nocheckpoint_merge"},
229 {Opt_compress_algorithm, "compress_algorithm=%s"},
230 {Opt_compress_log_size, "compress_log_size=%u"},
231 {Opt_compress_extension, "compress_extension=%s"},
232 {Opt_nocompress_extension, "nocompress_extension=%s"},
233 {Opt_compress_chksum, "compress_chksum"},
234 {Opt_compress_mode, "compress_mode=%s"},
235 {Opt_compress_cache, "compress_cache"},
236 {Opt_atgc, "atgc"},
237 {Opt_gc_merge, "gc_merge"},
238 {Opt_nogc_merge, "nogc_merge"},
239 {Opt_discard_unit, "discard_unit=%s"},
240 {Opt_err, NULL},
241};
242
243void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
244{
245 struct va_format vaf;
246 va_list args;
247 int level;
248
249 va_start(args, fmt);
250
251 level = printk_get_level(fmt);
252 vaf.fmt = printk_skip_level(fmt);
253 vaf.va = &args;
254 printk("%c%cF2FS-fs (%s): %pV\n",
255 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
256
257 va_end(args);
258}
259
260#if IS_ENABLED(CONFIG_UNICODE)
261static const struct f2fs_sb_encodings {
262 __u16 magic;
263 char *name;
264 unsigned int version;
265} f2fs_sb_encoding_map[] = {
266 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)},
267};
268
269static const struct f2fs_sb_encodings *
270f2fs_sb_read_encoding(const struct f2fs_super_block *sb)
271{
272 __u16 magic = le16_to_cpu(sb->s_encoding);
273 int i;
274
275 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
276 if (magic == f2fs_sb_encoding_map[i].magic)
277 return &f2fs_sb_encoding_map[i];
278
279 return NULL;
280}
281
282struct kmem_cache *f2fs_cf_name_slab;
283static int __init f2fs_create_casefold_cache(void)
284{
285 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name",
286 F2FS_NAME_LEN);
287 if (!f2fs_cf_name_slab)
288 return -ENOMEM;
289 return 0;
290}
291
292static void f2fs_destroy_casefold_cache(void)
293{
294 kmem_cache_destroy(f2fs_cf_name_slab);
295}
296#else
297static int __init f2fs_create_casefold_cache(void) { return 0; }
298static void f2fs_destroy_casefold_cache(void) { }
299#endif
300
301static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
302{
303 block_t limit = min((sbi->user_block_count << 1) / 1000,
304 sbi->user_block_count - sbi->reserved_blocks);
305
306
307 if (test_opt(sbi, RESERVE_ROOT) &&
308 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
309 F2FS_OPTION(sbi).root_reserved_blocks = limit;
310 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
311 F2FS_OPTION(sbi).root_reserved_blocks);
312 }
313 if (!test_opt(sbi, RESERVE_ROOT) &&
314 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
315 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
316 !gid_eq(F2FS_OPTION(sbi).s_resgid,
317 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
318 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
319 from_kuid_munged(&init_user_ns,
320 F2FS_OPTION(sbi).s_resuid),
321 from_kgid_munged(&init_user_ns,
322 F2FS_OPTION(sbi).s_resgid));
323}
324
325static inline int adjust_reserved_segment(struct f2fs_sb_info *sbi)
326{
327 unsigned int sec_blks = sbi->blocks_per_seg * sbi->segs_per_sec;
328 unsigned int avg_vblocks;
329 unsigned int wanted_reserved_segments;
330 block_t avail_user_block_count;
331
332 if (!F2FS_IO_ALIGNED(sbi))
333 return 0;
334
335
336 avg_vblocks = sec_blks / F2FS_IO_SIZE(sbi);
337
338
339
340
341 wanted_reserved_segments = (F2FS_IO_SIZE(sbi) / avg_vblocks) *
342 reserved_segments(sbi);
343 wanted_reserved_segments -= reserved_segments(sbi);
344
345 avail_user_block_count = sbi->user_block_count -
346 sbi->current_reserved_blocks -
347 F2FS_OPTION(sbi).root_reserved_blocks;
348
349 if (wanted_reserved_segments * sbi->blocks_per_seg >
350 avail_user_block_count) {
351 f2fs_err(sbi, "IO align feature can't grab additional reserved segment: %u, available segments: %u",
352 wanted_reserved_segments,
353 avail_user_block_count >> sbi->log_blocks_per_seg);
354 return -ENOSPC;
355 }
356
357 SM_I(sbi)->additional_reserved_segments = wanted_reserved_segments;
358
359 f2fs_info(sbi, "IO align feature needs additional reserved segment: %u",
360 wanted_reserved_segments);
361
362 return 0;
363}
364
365static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
366{
367 if (!F2FS_OPTION(sbi).unusable_cap_perc)
368 return;
369
370 if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
371 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
372 else
373 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
374 F2FS_OPTION(sbi).unusable_cap_perc;
375
376 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
377 F2FS_OPTION(sbi).unusable_cap,
378 F2FS_OPTION(sbi).unusable_cap_perc);
379}
380
381static void init_once(void *foo)
382{
383 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
384
385 inode_init_once(&fi->vfs_inode);
386}
387
388#ifdef CONFIG_QUOTA
389static const char * const quotatypes[] = INITQFNAMES;
390#define QTYPE2NAME(t) (quotatypes[t])
391static int f2fs_set_qf_name(struct super_block *sb, int qtype,
392 substring_t *args)
393{
394 struct f2fs_sb_info *sbi = F2FS_SB(sb);
395 char *qname;
396 int ret = -EINVAL;
397
398 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
399 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
400 return -EINVAL;
401 }
402 if (f2fs_sb_has_quota_ino(sbi)) {
403 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
404 return 0;
405 }
406
407 qname = match_strdup(args);
408 if (!qname) {
409 f2fs_err(sbi, "Not enough memory for storing quotafile name");
410 return -ENOMEM;
411 }
412 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
413 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
414 ret = 0;
415 else
416 f2fs_err(sbi, "%s quota file already specified",
417 QTYPE2NAME(qtype));
418 goto errout;
419 }
420 if (strchr(qname, '/')) {
421 f2fs_err(sbi, "quotafile must be on filesystem root");
422 goto errout;
423 }
424 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
425 set_opt(sbi, QUOTA);
426 return 0;
427errout:
428 kfree(qname);
429 return ret;
430}
431
432static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
433{
434 struct f2fs_sb_info *sbi = F2FS_SB(sb);
435
436 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
437 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
438 return -EINVAL;
439 }
440 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
441 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
442 return 0;
443}
444
445static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
446{
447
448
449
450
451
452 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
453 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
454 return -1;
455 }
456 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
457 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
458 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
459 if (test_opt(sbi, USRQUOTA) &&
460 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
461 clear_opt(sbi, USRQUOTA);
462
463 if (test_opt(sbi, GRPQUOTA) &&
464 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
465 clear_opt(sbi, GRPQUOTA);
466
467 if (test_opt(sbi, PRJQUOTA) &&
468 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
469 clear_opt(sbi, PRJQUOTA);
470
471 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
472 test_opt(sbi, PRJQUOTA)) {
473 f2fs_err(sbi, "old and new quota format mixing");
474 return -1;
475 }
476
477 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
478 f2fs_err(sbi, "journaled quota format not specified");
479 return -1;
480 }
481 }
482
483 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
484 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
485 F2FS_OPTION(sbi).s_jquota_fmt = 0;
486 }
487 return 0;
488}
489#endif
490
491static int f2fs_set_test_dummy_encryption(struct super_block *sb,
492 const char *opt,
493 const substring_t *arg,
494 bool is_remount)
495{
496 struct f2fs_sb_info *sbi = F2FS_SB(sb);
497#ifdef CONFIG_FS_ENCRYPTION
498 int err;
499
500 if (!f2fs_sb_has_encrypt(sbi)) {
501 f2fs_err(sbi, "Encrypt feature is off");
502 return -EINVAL;
503 }
504
505
506
507
508
509
510
511 if (is_remount && !F2FS_OPTION(sbi).dummy_enc_policy.policy) {
512 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
513 return -EINVAL;
514 }
515 err = fscrypt_set_test_dummy_encryption(
516 sb, arg->from, &F2FS_OPTION(sbi).dummy_enc_policy);
517 if (err) {
518 if (err == -EEXIST)
519 f2fs_warn(sbi,
520 "Can't change test_dummy_encryption on remount");
521 else if (err == -EINVAL)
522 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
523 opt);
524 else
525 f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
526 opt, err);
527 return -EINVAL;
528 }
529 f2fs_warn(sbi, "Test dummy encryption mode enabled");
530#else
531 f2fs_warn(sbi, "Test dummy encryption mount option ignored");
532#endif
533 return 0;
534}
535
536#ifdef CONFIG_F2FS_FS_COMPRESSION
537
538
539
540
541
542
543
544static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi)
545{
546 unsigned char (*ext)[F2FS_EXTENSION_LEN];
547 unsigned char (*noext)[F2FS_EXTENSION_LEN];
548 int ext_cnt, noext_cnt, index = 0, no_index = 0;
549
550 ext = F2FS_OPTION(sbi).extensions;
551 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
552 noext = F2FS_OPTION(sbi).noextensions;
553 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
554
555 if (!noext_cnt)
556 return 0;
557
558 for (no_index = 0; no_index < noext_cnt; no_index++) {
559 if (!strcasecmp("*", noext[no_index])) {
560 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files");
561 return -EINVAL;
562 }
563 for (index = 0; index < ext_cnt; index++) {
564 if (!strcasecmp(ext[index], noext[no_index])) {
565 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension",
566 ext[index]);
567 return -EINVAL;
568 }
569 }
570 }
571 return 0;
572}
573
574#ifdef CONFIG_F2FS_FS_LZ4
575static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
576{
577#ifdef CONFIG_F2FS_FS_LZ4HC
578 unsigned int level;
579#endif
580
581 if (strlen(str) == 3) {
582 F2FS_OPTION(sbi).compress_level = 0;
583 return 0;
584 }
585
586#ifdef CONFIG_F2FS_FS_LZ4HC
587 str += 3;
588
589 if (str[0] != ':') {
590 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
591 return -EINVAL;
592 }
593 if (kstrtouint(str + 1, 10, &level))
594 return -EINVAL;
595
596 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
597 f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
598 return -EINVAL;
599 }
600
601 F2FS_OPTION(sbi).compress_level = level;
602 return 0;
603#else
604 f2fs_info(sbi, "kernel doesn't support lz4hc compression");
605 return -EINVAL;
606#endif
607}
608#endif
609
610#ifdef CONFIG_F2FS_FS_ZSTD
611static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
612{
613 unsigned int level;
614 int len = 4;
615
616 if (strlen(str) == len) {
617 F2FS_OPTION(sbi).compress_level = 0;
618 return 0;
619 }
620
621 str += len;
622
623 if (str[0] != ':') {
624 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
625 return -EINVAL;
626 }
627 if (kstrtouint(str + 1, 10, &level))
628 return -EINVAL;
629
630 if (!level || level > zstd_max_clevel()) {
631 f2fs_info(sbi, "invalid zstd compress level: %d", level);
632 return -EINVAL;
633 }
634
635 F2FS_OPTION(sbi).compress_level = level;
636 return 0;
637}
638#endif
639#endif
640
641static int parse_options(struct super_block *sb, char *options, bool is_remount)
642{
643 struct f2fs_sb_info *sbi = F2FS_SB(sb);
644 substring_t args[MAX_OPT_ARGS];
645#ifdef CONFIG_F2FS_FS_COMPRESSION
646 unsigned char (*ext)[F2FS_EXTENSION_LEN];
647 unsigned char (*noext)[F2FS_EXTENSION_LEN];
648 int ext_cnt, noext_cnt;
649#endif
650 char *p, *name;
651 int arg = 0;
652 kuid_t uid;
653 kgid_t gid;
654 int ret;
655
656 if (!options)
657 goto default_check;
658
659 while ((p = strsep(&options, ",")) != NULL) {
660 int token;
661
662 if (!*p)
663 continue;
664
665
666
667
668 args[0].to = args[0].from = NULL;
669 token = match_token(p, f2fs_tokens, args);
670
671 switch (token) {
672 case Opt_gc_background:
673 name = match_strdup(&args[0]);
674
675 if (!name)
676 return -ENOMEM;
677 if (!strcmp(name, "on")) {
678 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
679 } else if (!strcmp(name, "off")) {
680 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
681 } else if (!strcmp(name, "sync")) {
682 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
683 } else {
684 kfree(name);
685 return -EINVAL;
686 }
687 kfree(name);
688 break;
689 case Opt_disable_roll_forward:
690 set_opt(sbi, DISABLE_ROLL_FORWARD);
691 break;
692 case Opt_norecovery:
693
694 set_opt(sbi, NORECOVERY);
695 if (!f2fs_readonly(sb))
696 return -EINVAL;
697 break;
698 case Opt_discard:
699 if (!f2fs_hw_support_discard(sbi)) {
700 f2fs_warn(sbi, "device does not support discard");
701 break;
702 }
703 set_opt(sbi, DISCARD);
704 break;
705 case Opt_nodiscard:
706 if (f2fs_hw_should_discard(sbi)) {
707 f2fs_warn(sbi, "discard is required for zoned block devices");
708 return -EINVAL;
709 }
710 clear_opt(sbi, DISCARD);
711 break;
712 case Opt_noheap:
713 set_opt(sbi, NOHEAP);
714 break;
715 case Opt_heap:
716 clear_opt(sbi, NOHEAP);
717 break;
718#ifdef CONFIG_F2FS_FS_XATTR
719 case Opt_user_xattr:
720 set_opt(sbi, XATTR_USER);
721 break;
722 case Opt_nouser_xattr:
723 clear_opt(sbi, XATTR_USER);
724 break;
725 case Opt_inline_xattr:
726 set_opt(sbi, INLINE_XATTR);
727 break;
728 case Opt_noinline_xattr:
729 clear_opt(sbi, INLINE_XATTR);
730 break;
731 case Opt_inline_xattr_size:
732 if (args->from && match_int(args, &arg))
733 return -EINVAL;
734 set_opt(sbi, INLINE_XATTR_SIZE);
735 F2FS_OPTION(sbi).inline_xattr_size = arg;
736 break;
737#else
738 case Opt_user_xattr:
739 f2fs_info(sbi, "user_xattr options not supported");
740 break;
741 case Opt_nouser_xattr:
742 f2fs_info(sbi, "nouser_xattr options not supported");
743 break;
744 case Opt_inline_xattr:
745 f2fs_info(sbi, "inline_xattr options not supported");
746 break;
747 case Opt_noinline_xattr:
748 f2fs_info(sbi, "noinline_xattr options not supported");
749 break;
750#endif
751#ifdef CONFIG_F2FS_FS_POSIX_ACL
752 case Opt_acl:
753 set_opt(sbi, POSIX_ACL);
754 break;
755 case Opt_noacl:
756 clear_opt(sbi, POSIX_ACL);
757 break;
758#else
759 case Opt_acl:
760 f2fs_info(sbi, "acl options not supported");
761 break;
762 case Opt_noacl:
763 f2fs_info(sbi, "noacl options not supported");
764 break;
765#endif
766 case Opt_active_logs:
767 if (args->from && match_int(args, &arg))
768 return -EINVAL;
769 if (arg != 2 && arg != 4 &&
770 arg != NR_CURSEG_PERSIST_TYPE)
771 return -EINVAL;
772 F2FS_OPTION(sbi).active_logs = arg;
773 break;
774 case Opt_disable_ext_identify:
775 set_opt(sbi, DISABLE_EXT_IDENTIFY);
776 break;
777 case Opt_inline_data:
778 set_opt(sbi, INLINE_DATA);
779 break;
780 case Opt_inline_dentry:
781 set_opt(sbi, INLINE_DENTRY);
782 break;
783 case Opt_noinline_dentry:
784 clear_opt(sbi, INLINE_DENTRY);
785 break;
786 case Opt_flush_merge:
787 set_opt(sbi, FLUSH_MERGE);
788 break;
789 case Opt_noflush_merge:
790 clear_opt(sbi, FLUSH_MERGE);
791 break;
792 case Opt_nobarrier:
793 set_opt(sbi, NOBARRIER);
794 break;
795 case Opt_fastboot:
796 set_opt(sbi, FASTBOOT);
797 break;
798 case Opt_extent_cache:
799 set_opt(sbi, EXTENT_CACHE);
800 break;
801 case Opt_noextent_cache:
802 clear_opt(sbi, EXTENT_CACHE);
803 break;
804 case Opt_noinline_data:
805 clear_opt(sbi, INLINE_DATA);
806 break;
807 case Opt_data_flush:
808 set_opt(sbi, DATA_FLUSH);
809 break;
810 case Opt_reserve_root:
811 if (args->from && match_int(args, &arg))
812 return -EINVAL;
813 if (test_opt(sbi, RESERVE_ROOT)) {
814 f2fs_info(sbi, "Preserve previous reserve_root=%u",
815 F2FS_OPTION(sbi).root_reserved_blocks);
816 } else {
817 F2FS_OPTION(sbi).root_reserved_blocks = arg;
818 set_opt(sbi, RESERVE_ROOT);
819 }
820 break;
821 case Opt_resuid:
822 if (args->from && match_int(args, &arg))
823 return -EINVAL;
824 uid = make_kuid(current_user_ns(), arg);
825 if (!uid_valid(uid)) {
826 f2fs_err(sbi, "Invalid uid value %d", arg);
827 return -EINVAL;
828 }
829 F2FS_OPTION(sbi).s_resuid = uid;
830 break;
831 case Opt_resgid:
832 if (args->from && match_int(args, &arg))
833 return -EINVAL;
834 gid = make_kgid(current_user_ns(), arg);
835 if (!gid_valid(gid)) {
836 f2fs_err(sbi, "Invalid gid value %d", arg);
837 return -EINVAL;
838 }
839 F2FS_OPTION(sbi).s_resgid = gid;
840 break;
841 case Opt_mode:
842 name = match_strdup(&args[0]);
843
844 if (!name)
845 return -ENOMEM;
846 if (!strcmp(name, "adaptive")) {
847 if (f2fs_sb_has_blkzoned(sbi)) {
848 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
849 kfree(name);
850 return -EINVAL;
851 }
852 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
853 } else if (!strcmp(name, "lfs")) {
854 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
855 } else if (!strcmp(name, "fragment:segment")) {
856 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG;
857 } else if (!strcmp(name, "fragment:block")) {
858 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK;
859 } else {
860 kfree(name);
861 return -EINVAL;
862 }
863 kfree(name);
864 break;
865 case Opt_io_size_bits:
866 if (args->from && match_int(args, &arg))
867 return -EINVAL;
868 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) {
869 f2fs_warn(sbi, "Not support %d, larger than %d",
870 1 << arg, BIO_MAX_VECS);
871 return -EINVAL;
872 }
873 F2FS_OPTION(sbi).write_io_size_bits = arg;
874 break;
875#ifdef CONFIG_F2FS_FAULT_INJECTION
876 case Opt_fault_injection:
877 if (args->from && match_int(args, &arg))
878 return -EINVAL;
879 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
880 set_opt(sbi, FAULT_INJECTION);
881 break;
882
883 case Opt_fault_type:
884 if (args->from && match_int(args, &arg))
885 return -EINVAL;
886 f2fs_build_fault_attr(sbi, 0, arg);
887 set_opt(sbi, FAULT_INJECTION);
888 break;
889#else
890 case Opt_fault_injection:
891 f2fs_info(sbi, "fault_injection options not supported");
892 break;
893
894 case Opt_fault_type:
895 f2fs_info(sbi, "fault_type options not supported");
896 break;
897#endif
898 case Opt_lazytime:
899 sb->s_flags |= SB_LAZYTIME;
900 break;
901 case Opt_nolazytime:
902 sb->s_flags &= ~SB_LAZYTIME;
903 break;
904#ifdef CONFIG_QUOTA
905 case Opt_quota:
906 case Opt_usrquota:
907 set_opt(sbi, USRQUOTA);
908 break;
909 case Opt_grpquota:
910 set_opt(sbi, GRPQUOTA);
911 break;
912 case Opt_prjquota:
913 set_opt(sbi, PRJQUOTA);
914 break;
915 case Opt_usrjquota:
916 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
917 if (ret)
918 return ret;
919 break;
920 case Opt_grpjquota:
921 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
922 if (ret)
923 return ret;
924 break;
925 case Opt_prjjquota:
926 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
927 if (ret)
928 return ret;
929 break;
930 case Opt_offusrjquota:
931 ret = f2fs_clear_qf_name(sb, USRQUOTA);
932 if (ret)
933 return ret;
934 break;
935 case Opt_offgrpjquota:
936 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
937 if (ret)
938 return ret;
939 break;
940 case Opt_offprjjquota:
941 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
942 if (ret)
943 return ret;
944 break;
945 case Opt_jqfmt_vfsold:
946 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
947 break;
948 case Opt_jqfmt_vfsv0:
949 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
950 break;
951 case Opt_jqfmt_vfsv1:
952 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
953 break;
954 case Opt_noquota:
955 clear_opt(sbi, QUOTA);
956 clear_opt(sbi, USRQUOTA);
957 clear_opt(sbi, GRPQUOTA);
958 clear_opt(sbi, PRJQUOTA);
959 break;
960#else
961 case Opt_quota:
962 case Opt_usrquota:
963 case Opt_grpquota:
964 case Opt_prjquota:
965 case Opt_usrjquota:
966 case Opt_grpjquota:
967 case Opt_prjjquota:
968 case Opt_offusrjquota:
969 case Opt_offgrpjquota:
970 case Opt_offprjjquota:
971 case Opt_jqfmt_vfsold:
972 case Opt_jqfmt_vfsv0:
973 case Opt_jqfmt_vfsv1:
974 case Opt_noquota:
975 f2fs_info(sbi, "quota operations not supported");
976 break;
977#endif
978 case Opt_whint:
979 name = match_strdup(&args[0]);
980 if (!name)
981 return -ENOMEM;
982 if (!strcmp(name, "user-based")) {
983 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
984 } else if (!strcmp(name, "off")) {
985 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
986 } else if (!strcmp(name, "fs-based")) {
987 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
988 } else {
989 kfree(name);
990 return -EINVAL;
991 }
992 kfree(name);
993 break;
994 case Opt_alloc:
995 name = match_strdup(&args[0]);
996 if (!name)
997 return -ENOMEM;
998
999 if (!strcmp(name, "default")) {
1000 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1001 } else if (!strcmp(name, "reuse")) {
1002 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
1003 } else {
1004 kfree(name);
1005 return -EINVAL;
1006 }
1007 kfree(name);
1008 break;
1009 case Opt_fsync:
1010 name = match_strdup(&args[0]);
1011 if (!name)
1012 return -ENOMEM;
1013 if (!strcmp(name, "posix")) {
1014 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
1015 } else if (!strcmp(name, "strict")) {
1016 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
1017 } else if (!strcmp(name, "nobarrier")) {
1018 F2FS_OPTION(sbi).fsync_mode =
1019 FSYNC_MODE_NOBARRIER;
1020 } else {
1021 kfree(name);
1022 return -EINVAL;
1023 }
1024 kfree(name);
1025 break;
1026 case Opt_test_dummy_encryption:
1027 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
1028 is_remount);
1029 if (ret)
1030 return ret;
1031 break;
1032 case Opt_inlinecrypt:
1033#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
1034 sb->s_flags |= SB_INLINECRYPT;
1035#else
1036 f2fs_info(sbi, "inline encryption not supported");
1037#endif
1038 break;
1039 case Opt_checkpoint_disable_cap_perc:
1040 if (args->from && match_int(args, &arg))
1041 return -EINVAL;
1042 if (arg < 0 || arg > 100)
1043 return -EINVAL;
1044 F2FS_OPTION(sbi).unusable_cap_perc = arg;
1045 set_opt(sbi, DISABLE_CHECKPOINT);
1046 break;
1047 case Opt_checkpoint_disable_cap:
1048 if (args->from && match_int(args, &arg))
1049 return -EINVAL;
1050 F2FS_OPTION(sbi).unusable_cap = arg;
1051 set_opt(sbi, DISABLE_CHECKPOINT);
1052 break;
1053 case Opt_checkpoint_disable:
1054 set_opt(sbi, DISABLE_CHECKPOINT);
1055 break;
1056 case Opt_checkpoint_enable:
1057 clear_opt(sbi, DISABLE_CHECKPOINT);
1058 break;
1059 case Opt_checkpoint_merge:
1060 set_opt(sbi, MERGE_CHECKPOINT);
1061 break;
1062 case Opt_nocheckpoint_merge:
1063 clear_opt(sbi, MERGE_CHECKPOINT);
1064 break;
1065#ifdef CONFIG_F2FS_FS_COMPRESSION
1066 case Opt_compress_algorithm:
1067 if (!f2fs_sb_has_compression(sbi)) {
1068 f2fs_info(sbi, "Image doesn't support compression");
1069 break;
1070 }
1071 name = match_strdup(&args[0]);
1072 if (!name)
1073 return -ENOMEM;
1074 if (!strcmp(name, "lzo")) {
1075#ifdef CONFIG_F2FS_FS_LZO
1076 F2FS_OPTION(sbi).compress_level = 0;
1077 F2FS_OPTION(sbi).compress_algorithm =
1078 COMPRESS_LZO;
1079#else
1080 f2fs_info(sbi, "kernel doesn't support lzo compression");
1081#endif
1082 } else if (!strncmp(name, "lz4", 3)) {
1083#ifdef CONFIG_F2FS_FS_LZ4
1084 ret = f2fs_set_lz4hc_level(sbi, name);
1085 if (ret) {
1086 kfree(name);
1087 return -EINVAL;
1088 }
1089 F2FS_OPTION(sbi).compress_algorithm =
1090 COMPRESS_LZ4;
1091#else
1092 f2fs_info(sbi, "kernel doesn't support lz4 compression");
1093#endif
1094 } else if (!strncmp(name, "zstd", 4)) {
1095#ifdef CONFIG_F2FS_FS_ZSTD
1096 ret = f2fs_set_zstd_level(sbi, name);
1097 if (ret) {
1098 kfree(name);
1099 return -EINVAL;
1100 }
1101 F2FS_OPTION(sbi).compress_algorithm =
1102 COMPRESS_ZSTD;
1103#else
1104 f2fs_info(sbi, "kernel doesn't support zstd compression");
1105#endif
1106 } else if (!strcmp(name, "lzo-rle")) {
1107#ifdef CONFIG_F2FS_FS_LZORLE
1108 F2FS_OPTION(sbi).compress_level = 0;
1109 F2FS_OPTION(sbi).compress_algorithm =
1110 COMPRESS_LZORLE;
1111#else
1112 f2fs_info(sbi, "kernel doesn't support lzorle compression");
1113#endif
1114 } else {
1115 kfree(name);
1116 return -EINVAL;
1117 }
1118 kfree(name);
1119 break;
1120 case Opt_compress_log_size:
1121 if (!f2fs_sb_has_compression(sbi)) {
1122 f2fs_info(sbi, "Image doesn't support compression");
1123 break;
1124 }
1125 if (args->from && match_int(args, &arg))
1126 return -EINVAL;
1127 if (arg < MIN_COMPRESS_LOG_SIZE ||
1128 arg > MAX_COMPRESS_LOG_SIZE) {
1129 f2fs_err(sbi,
1130 "Compress cluster log size is out of range");
1131 return -EINVAL;
1132 }
1133 F2FS_OPTION(sbi).compress_log_size = arg;
1134 break;
1135 case Opt_compress_extension:
1136 if (!f2fs_sb_has_compression(sbi)) {
1137 f2fs_info(sbi, "Image doesn't support compression");
1138 break;
1139 }
1140 name = match_strdup(&args[0]);
1141 if (!name)
1142 return -ENOMEM;
1143
1144 ext = F2FS_OPTION(sbi).extensions;
1145 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
1146
1147 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1148 ext_cnt >= COMPRESS_EXT_NUM) {
1149 f2fs_err(sbi,
1150 "invalid extension length/number");
1151 kfree(name);
1152 return -EINVAL;
1153 }
1154
1155 strcpy(ext[ext_cnt], name);
1156 F2FS_OPTION(sbi).compress_ext_cnt++;
1157 kfree(name);
1158 break;
1159 case Opt_nocompress_extension:
1160 if (!f2fs_sb_has_compression(sbi)) {
1161 f2fs_info(sbi, "Image doesn't support compression");
1162 break;
1163 }
1164 name = match_strdup(&args[0]);
1165 if (!name)
1166 return -ENOMEM;
1167
1168 noext = F2FS_OPTION(sbi).noextensions;
1169 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
1170
1171 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1172 noext_cnt >= COMPRESS_EXT_NUM) {
1173 f2fs_err(sbi,
1174 "invalid extension length/number");
1175 kfree(name);
1176 return -EINVAL;
1177 }
1178
1179 strcpy(noext[noext_cnt], name);
1180 F2FS_OPTION(sbi).nocompress_ext_cnt++;
1181 kfree(name);
1182 break;
1183 case Opt_compress_chksum:
1184 F2FS_OPTION(sbi).compress_chksum = true;
1185 break;
1186 case Opt_compress_mode:
1187 name = match_strdup(&args[0]);
1188 if (!name)
1189 return -ENOMEM;
1190 if (!strcmp(name, "fs")) {
1191 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1192 } else if (!strcmp(name, "user")) {
1193 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER;
1194 } else {
1195 kfree(name);
1196 return -EINVAL;
1197 }
1198 kfree(name);
1199 break;
1200 case Opt_compress_cache:
1201 set_opt(sbi, COMPRESS_CACHE);
1202 break;
1203#else
1204 case Opt_compress_algorithm:
1205 case Opt_compress_log_size:
1206 case Opt_compress_extension:
1207 case Opt_nocompress_extension:
1208 case Opt_compress_chksum:
1209 case Opt_compress_mode:
1210 case Opt_compress_cache:
1211 f2fs_info(sbi, "compression options not supported");
1212 break;
1213#endif
1214 case Opt_atgc:
1215 set_opt(sbi, ATGC);
1216 break;
1217 case Opt_gc_merge:
1218 set_opt(sbi, GC_MERGE);
1219 break;
1220 case Opt_nogc_merge:
1221 clear_opt(sbi, GC_MERGE);
1222 break;
1223 case Opt_discard_unit:
1224 name = match_strdup(&args[0]);
1225 if (!name)
1226 return -ENOMEM;
1227 if (!strcmp(name, "block")) {
1228 F2FS_OPTION(sbi).discard_unit =
1229 DISCARD_UNIT_BLOCK;
1230 } else if (!strcmp(name, "segment")) {
1231 F2FS_OPTION(sbi).discard_unit =
1232 DISCARD_UNIT_SEGMENT;
1233 } else if (!strcmp(name, "section")) {
1234 F2FS_OPTION(sbi).discard_unit =
1235 DISCARD_UNIT_SECTION;
1236 } else {
1237 kfree(name);
1238 return -EINVAL;
1239 }
1240 kfree(name);
1241 break;
1242 default:
1243 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
1244 p);
1245 return -EINVAL;
1246 }
1247 }
1248default_check:
1249#ifdef CONFIG_QUOTA
1250 if (f2fs_check_quota_options(sbi))
1251 return -EINVAL;
1252#else
1253 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
1254 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1255 return -EINVAL;
1256 }
1257 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
1258 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1259 return -EINVAL;
1260 }
1261#endif
1262#if !IS_ENABLED(CONFIG_UNICODE)
1263 if (f2fs_sb_has_casefold(sbi)) {
1264 f2fs_err(sbi,
1265 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
1266 return -EINVAL;
1267 }
1268#endif
1269
1270
1271
1272
1273
1274#ifndef CONFIG_BLK_DEV_ZONED
1275 if (f2fs_sb_has_blkzoned(sbi)) {
1276 f2fs_err(sbi, "Zoned block device support is not enabled");
1277 return -EINVAL;
1278 }
1279#endif
1280 if (f2fs_sb_has_blkzoned(sbi)) {
1281 if (F2FS_OPTION(sbi).discard_unit !=
1282 DISCARD_UNIT_SECTION) {
1283 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default");
1284 F2FS_OPTION(sbi).discard_unit =
1285 DISCARD_UNIT_SECTION;
1286 }
1287 }
1288
1289#ifdef CONFIG_F2FS_FS_COMPRESSION
1290 if (f2fs_test_compress_extension(sbi)) {
1291 f2fs_err(sbi, "invalid compress or nocompress extension");
1292 return -EINVAL;
1293 }
1294#endif
1295
1296 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
1297 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
1298 F2FS_IO_SIZE_KB(sbi));
1299 return -EINVAL;
1300 }
1301
1302 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
1303 int min_size, max_size;
1304
1305 if (!f2fs_sb_has_extra_attr(sbi) ||
1306 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
1307 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
1308 return -EINVAL;
1309 }
1310 if (!test_opt(sbi, INLINE_XATTR)) {
1311 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
1312 return -EINVAL;
1313 }
1314
1315 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
1316 max_size = MAX_INLINE_XATTR_SIZE;
1317
1318 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
1319 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
1320 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
1321 min_size, max_size);
1322 return -EINVAL;
1323 }
1324 }
1325
1326 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
1327 f2fs_err(sbi, "LFS not compatible with checkpoint=disable");
1328 return -EINVAL;
1329 }
1330
1331
1332
1333
1334 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_PERSIST_TYPE)
1335 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1336
1337 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
1338 f2fs_err(sbi, "Allow to mount readonly mode only");
1339 return -EROFS;
1340 }
1341 return 0;
1342}
1343
1344static struct inode *f2fs_alloc_inode(struct super_block *sb)
1345{
1346 struct f2fs_inode_info *fi;
1347
1348 fi = f2fs_kmem_cache_alloc(f2fs_inode_cachep,
1349 GFP_F2FS_ZERO, false, F2FS_SB(sb));
1350 if (!fi)
1351 return NULL;
1352
1353 init_once((void *) fi);
1354
1355
1356 atomic_set(&fi->dirty_pages, 0);
1357 atomic_set(&fi->i_compr_blocks, 0);
1358 init_rwsem(&fi->i_sem);
1359 spin_lock_init(&fi->i_size_lock);
1360 INIT_LIST_HEAD(&fi->dirty_list);
1361 INIT_LIST_HEAD(&fi->gdirty_list);
1362 INIT_LIST_HEAD(&fi->inmem_ilist);
1363 INIT_LIST_HEAD(&fi->inmem_pages);
1364 mutex_init(&fi->inmem_lock);
1365 init_rwsem(&fi->i_gc_rwsem[READ]);
1366 init_rwsem(&fi->i_gc_rwsem[WRITE]);
1367 init_rwsem(&fi->i_xattr_sem);
1368
1369
1370 fi->i_dir_level = F2FS_SB(sb)->dir_level;
1371
1372 return &fi->vfs_inode;
1373}
1374
1375static int f2fs_drop_inode(struct inode *inode)
1376{
1377 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1378 int ret;
1379
1380
1381
1382
1383
1384 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1385 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1386 inode->i_ino == F2FS_META_INO(sbi)) {
1387 trace_f2fs_drop_inode(inode, 1);
1388 return 1;
1389 }
1390 }
1391
1392
1393
1394
1395
1396
1397
1398
1399 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
1400 if (!inode->i_nlink && !is_bad_inode(inode)) {
1401
1402 atomic_inc(&inode->i_count);
1403 spin_unlock(&inode->i_lock);
1404
1405
1406 if (f2fs_is_atomic_file(inode))
1407 f2fs_drop_inmem_pages(inode);
1408
1409
1410 f2fs_destroy_extent_node(inode);
1411
1412 sb_start_intwrite(inode->i_sb);
1413 f2fs_i_size_write(inode, 0);
1414
1415 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1416 inode, NULL, 0, DATA);
1417 truncate_inode_pages_final(inode->i_mapping);
1418
1419 if (F2FS_HAS_BLOCKS(inode))
1420 f2fs_truncate(inode);
1421
1422 sb_end_intwrite(inode->i_sb);
1423
1424 spin_lock(&inode->i_lock);
1425 atomic_dec(&inode->i_count);
1426 }
1427 trace_f2fs_drop_inode(inode, 0);
1428 return 0;
1429 }
1430 ret = generic_drop_inode(inode);
1431 if (!ret)
1432 ret = fscrypt_drop_inode(inode);
1433 trace_f2fs_drop_inode(inode, ret);
1434 return ret;
1435}
1436
1437int f2fs_inode_dirtied(struct inode *inode, bool sync)
1438{
1439 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1440 int ret = 0;
1441
1442 spin_lock(&sbi->inode_lock[DIRTY_META]);
1443 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1444 ret = 1;
1445 } else {
1446 set_inode_flag(inode, FI_DIRTY_INODE);
1447 stat_inc_dirty_inode(sbi, DIRTY_META);
1448 }
1449 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1450 list_add_tail(&F2FS_I(inode)->gdirty_list,
1451 &sbi->inode_list[DIRTY_META]);
1452 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1453 }
1454 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1455 return ret;
1456}
1457
1458void f2fs_inode_synced(struct inode *inode)
1459{
1460 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1461
1462 spin_lock(&sbi->inode_lock[DIRTY_META]);
1463 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1464 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1465 return;
1466 }
1467 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1468 list_del_init(&F2FS_I(inode)->gdirty_list);
1469 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1470 }
1471 clear_inode_flag(inode, FI_DIRTY_INODE);
1472 clear_inode_flag(inode, FI_AUTO_RECOVER);
1473 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
1474 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1475}
1476
1477
1478
1479
1480
1481
1482static void f2fs_dirty_inode(struct inode *inode, int flags)
1483{
1484 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1485
1486 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1487 inode->i_ino == F2FS_META_INO(sbi))
1488 return;
1489
1490 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1491 clear_inode_flag(inode, FI_AUTO_RECOVER);
1492
1493 f2fs_inode_dirtied(inode, false);
1494}
1495
1496static void f2fs_free_inode(struct inode *inode)
1497{
1498 fscrypt_free_inode(inode);
1499 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1500}
1501
1502static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1503{
1504 percpu_counter_destroy(&sbi->alloc_valid_block_count);
1505 percpu_counter_destroy(&sbi->total_valid_inode_count);
1506}
1507
1508static void destroy_device_list(struct f2fs_sb_info *sbi)
1509{
1510 int i;
1511
1512 for (i = 0; i < sbi->s_ndevs; i++) {
1513 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1514#ifdef CONFIG_BLK_DEV_ZONED
1515 kvfree(FDEV(i).blkz_seq);
1516 kfree(FDEV(i).zone_capacity_blocks);
1517#endif
1518 }
1519 kvfree(sbi->devs);
1520}
1521
1522static void f2fs_put_super(struct super_block *sb)
1523{
1524 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1525 int i;
1526 bool dropped;
1527
1528
1529 f2fs_unregister_sysfs(sbi);
1530
1531 f2fs_quota_off_umount(sb);
1532
1533
1534 mutex_lock(&sbi->umount_mutex);
1535
1536
1537
1538
1539
1540 f2fs_stop_ckpt_thread(sbi);
1541
1542
1543
1544
1545
1546
1547 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1548 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
1549 struct cp_control cpc = {
1550 .reason = CP_UMOUNT,
1551 };
1552 f2fs_write_checkpoint(sbi, &cpc);
1553 }
1554
1555
1556 dropped = f2fs_issue_discard_timeout(sbi);
1557
1558 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1559 !sbi->discard_blks && !dropped) {
1560 struct cp_control cpc = {
1561 .reason = CP_UMOUNT | CP_TRIMMED,
1562 };
1563 f2fs_write_checkpoint(sbi, &cpc);
1564 }
1565
1566
1567
1568
1569
1570 f2fs_release_ino_entry(sbi, true);
1571
1572 f2fs_leave_shrinker(sbi);
1573 mutex_unlock(&sbi->umount_mutex);
1574
1575
1576 f2fs_flush_merged_writes(sbi);
1577
1578 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1579
1580 f2fs_bug_on(sbi, sbi->fsync_node_num);
1581
1582 f2fs_destroy_compress_inode(sbi);
1583
1584 iput(sbi->node_inode);
1585 sbi->node_inode = NULL;
1586
1587 iput(sbi->meta_inode);
1588 sbi->meta_inode = NULL;
1589
1590
1591
1592
1593
1594 f2fs_destroy_stats(sbi);
1595
1596
1597 f2fs_destroy_node_manager(sbi);
1598 f2fs_destroy_segment_manager(sbi);
1599
1600 f2fs_destroy_post_read_wq(sbi);
1601
1602 kvfree(sbi->ckpt);
1603
1604 sb->s_fs_info = NULL;
1605 if (sbi->s_chksum_driver)
1606 crypto_free_shash(sbi->s_chksum_driver);
1607 kfree(sbi->raw_super);
1608
1609 destroy_device_list(sbi);
1610 f2fs_destroy_page_array_cache(sbi);
1611 f2fs_destroy_xattr_caches(sbi);
1612 mempool_destroy(sbi->write_io_dummy);
1613#ifdef CONFIG_QUOTA
1614 for (i = 0; i < MAXQUOTAS; i++)
1615 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
1616#endif
1617 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
1618 destroy_percpu_info(sbi);
1619 f2fs_destroy_iostat(sbi);
1620 for (i = 0; i < NR_PAGE_TYPE; i++)
1621 kvfree(sbi->write_io[i]);
1622#if IS_ENABLED(CONFIG_UNICODE)
1623 utf8_unload(sb->s_encoding);
1624#endif
1625 kfree(sbi);
1626}
1627
1628int f2fs_sync_fs(struct super_block *sb, int sync)
1629{
1630 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1631 int err = 0;
1632
1633 if (unlikely(f2fs_cp_error(sbi)))
1634 return 0;
1635 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1636 return 0;
1637
1638 trace_f2fs_sync_fs(sb, sync);
1639
1640 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1641 return -EAGAIN;
1642
1643 if (sync)
1644 err = f2fs_issue_checkpoint(sbi);
1645
1646 return err;
1647}
1648
1649static int f2fs_freeze(struct super_block *sb)
1650{
1651 if (f2fs_readonly(sb))
1652 return 0;
1653
1654
1655 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1656 return -EIO;
1657
1658
1659 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1660 return -EINVAL;
1661
1662
1663 if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list))
1664 return -EINVAL;
1665 return 0;
1666}
1667
1668static int f2fs_unfreeze(struct super_block *sb)
1669{
1670 return 0;
1671}
1672
1673#ifdef CONFIG_QUOTA
1674static int f2fs_statfs_project(struct super_block *sb,
1675 kprojid_t projid, struct kstatfs *buf)
1676{
1677 struct kqid qid;
1678 struct dquot *dquot;
1679 u64 limit;
1680 u64 curblock;
1681
1682 qid = make_kqid_projid(projid);
1683 dquot = dqget(sb, qid);
1684 if (IS_ERR(dquot))
1685 return PTR_ERR(dquot);
1686 spin_lock(&dquot->dq_dqb_lock);
1687
1688 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1689 dquot->dq_dqb.dqb_bhardlimit);
1690 if (limit)
1691 limit >>= sb->s_blocksize_bits;
1692
1693 if (limit && buf->f_blocks > limit) {
1694 curblock = (dquot->dq_dqb.dqb_curspace +
1695 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
1696 buf->f_blocks = limit;
1697 buf->f_bfree = buf->f_bavail =
1698 (buf->f_blocks > curblock) ?
1699 (buf->f_blocks - curblock) : 0;
1700 }
1701
1702 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1703 dquot->dq_dqb.dqb_ihardlimit);
1704
1705 if (limit && buf->f_files > limit) {
1706 buf->f_files = limit;
1707 buf->f_ffree =
1708 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1709 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1710 }
1711
1712 spin_unlock(&dquot->dq_dqb_lock);
1713 dqput(dquot);
1714 return 0;
1715}
1716#endif
1717
1718static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1719{
1720 struct super_block *sb = dentry->d_sb;
1721 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1722 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1723 block_t total_count, user_block_count, start_count;
1724 u64 avail_node_count;
1725
1726 total_count = le64_to_cpu(sbi->raw_super->block_count);
1727 user_block_count = sbi->user_block_count;
1728 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
1729 buf->f_type = F2FS_SUPER_MAGIC;
1730 buf->f_bsize = sbi->blocksize;
1731
1732 buf->f_blocks = total_count - start_count;
1733 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
1734 sbi->current_reserved_blocks;
1735
1736 spin_lock(&sbi->stat_lock);
1737 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1738 buf->f_bfree = 0;
1739 else
1740 buf->f_bfree -= sbi->unusable_block_count;
1741 spin_unlock(&sbi->stat_lock);
1742
1743 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1744 buf->f_bavail = buf->f_bfree -
1745 F2FS_OPTION(sbi).root_reserved_blocks;
1746 else
1747 buf->f_bavail = 0;
1748
1749 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
1750
1751 if (avail_node_count > user_block_count) {
1752 buf->f_files = user_block_count;
1753 buf->f_ffree = buf->f_bavail;
1754 } else {
1755 buf->f_files = avail_node_count;
1756 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1757 buf->f_bavail);
1758 }
1759
1760 buf->f_namelen = F2FS_NAME_LEN;
1761 buf->f_fsid = u64_to_fsid(id);
1762
1763#ifdef CONFIG_QUOTA
1764 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1765 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1766 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1767 }
1768#endif
1769 return 0;
1770}
1771
1772static inline void f2fs_show_quota_options(struct seq_file *seq,
1773 struct super_block *sb)
1774{
1775#ifdef CONFIG_QUOTA
1776 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1777
1778 if (F2FS_OPTION(sbi).s_jquota_fmt) {
1779 char *fmtname = "";
1780
1781 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
1782 case QFMT_VFS_OLD:
1783 fmtname = "vfsold";
1784 break;
1785 case QFMT_VFS_V0:
1786 fmtname = "vfsv0";
1787 break;
1788 case QFMT_VFS_V1:
1789 fmtname = "vfsv1";
1790 break;
1791 }
1792 seq_printf(seq, ",jqfmt=%s", fmtname);
1793 }
1794
1795 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1796 seq_show_option(seq, "usrjquota",
1797 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
1798
1799 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1800 seq_show_option(seq, "grpjquota",
1801 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
1802
1803 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1804 seq_show_option(seq, "prjjquota",
1805 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
1806#endif
1807}
1808
1809#ifdef CONFIG_F2FS_FS_COMPRESSION
1810static inline void f2fs_show_compress_options(struct seq_file *seq,
1811 struct super_block *sb)
1812{
1813 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1814 char *algtype = "";
1815 int i;
1816
1817 if (!f2fs_sb_has_compression(sbi))
1818 return;
1819
1820 switch (F2FS_OPTION(sbi).compress_algorithm) {
1821 case COMPRESS_LZO:
1822 algtype = "lzo";
1823 break;
1824 case COMPRESS_LZ4:
1825 algtype = "lz4";
1826 break;
1827 case COMPRESS_ZSTD:
1828 algtype = "zstd";
1829 break;
1830 case COMPRESS_LZORLE:
1831 algtype = "lzo-rle";
1832 break;
1833 }
1834 seq_printf(seq, ",compress_algorithm=%s", algtype);
1835
1836 if (F2FS_OPTION(sbi).compress_level)
1837 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level);
1838
1839 seq_printf(seq, ",compress_log_size=%u",
1840 F2FS_OPTION(sbi).compress_log_size);
1841
1842 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1843 seq_printf(seq, ",compress_extension=%s",
1844 F2FS_OPTION(sbi).extensions[i]);
1845 }
1846
1847 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) {
1848 seq_printf(seq, ",nocompress_extension=%s",
1849 F2FS_OPTION(sbi).noextensions[i]);
1850 }
1851
1852 if (F2FS_OPTION(sbi).compress_chksum)
1853 seq_puts(seq, ",compress_chksum");
1854
1855 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS)
1856 seq_printf(seq, ",compress_mode=%s", "fs");
1857 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER)
1858 seq_printf(seq, ",compress_mode=%s", "user");
1859
1860 if (test_opt(sbi, COMPRESS_CACHE))
1861 seq_puts(seq, ",compress_cache");
1862}
1863#endif
1864
1865static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1866{
1867 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1868
1869 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1870 seq_printf(seq, ",background_gc=%s", "sync");
1871 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1872 seq_printf(seq, ",background_gc=%s", "on");
1873 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
1874 seq_printf(seq, ",background_gc=%s", "off");
1875
1876 if (test_opt(sbi, GC_MERGE))
1877 seq_puts(seq, ",gc_merge");
1878
1879 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1880 seq_puts(seq, ",disable_roll_forward");
1881 if (test_opt(sbi, NORECOVERY))
1882 seq_puts(seq, ",norecovery");
1883 if (test_opt(sbi, DISCARD))
1884 seq_puts(seq, ",discard");
1885 else
1886 seq_puts(seq, ",nodiscard");
1887 if (test_opt(sbi, NOHEAP))
1888 seq_puts(seq, ",no_heap");
1889 else
1890 seq_puts(seq, ",heap");
1891#ifdef CONFIG_F2FS_FS_XATTR
1892 if (test_opt(sbi, XATTR_USER))
1893 seq_puts(seq, ",user_xattr");
1894 else
1895 seq_puts(seq, ",nouser_xattr");
1896 if (test_opt(sbi, INLINE_XATTR))
1897 seq_puts(seq, ",inline_xattr");
1898 else
1899 seq_puts(seq, ",noinline_xattr");
1900 if (test_opt(sbi, INLINE_XATTR_SIZE))
1901 seq_printf(seq, ",inline_xattr_size=%u",
1902 F2FS_OPTION(sbi).inline_xattr_size);
1903#endif
1904#ifdef CONFIG_F2FS_FS_POSIX_ACL
1905 if (test_opt(sbi, POSIX_ACL))
1906 seq_puts(seq, ",acl");
1907 else
1908 seq_puts(seq, ",noacl");
1909#endif
1910 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
1911 seq_puts(seq, ",disable_ext_identify");
1912 if (test_opt(sbi, INLINE_DATA))
1913 seq_puts(seq, ",inline_data");
1914 else
1915 seq_puts(seq, ",noinline_data");
1916 if (test_opt(sbi, INLINE_DENTRY))
1917 seq_puts(seq, ",inline_dentry");
1918 else
1919 seq_puts(seq, ",noinline_dentry");
1920 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
1921 seq_puts(seq, ",flush_merge");
1922 if (test_opt(sbi, NOBARRIER))
1923 seq_puts(seq, ",nobarrier");
1924 if (test_opt(sbi, FASTBOOT))
1925 seq_puts(seq, ",fastboot");
1926 if (test_opt(sbi, EXTENT_CACHE))
1927 seq_puts(seq, ",extent_cache");
1928 else
1929 seq_puts(seq, ",noextent_cache");
1930 if (test_opt(sbi, DATA_FLUSH))
1931 seq_puts(seq, ",data_flush");
1932
1933 seq_puts(seq, ",mode=");
1934 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
1935 seq_puts(seq, "adaptive");
1936 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
1937 seq_puts(seq, "lfs");
1938 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG)
1939 seq_puts(seq, "fragment:segment");
1940 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK)
1941 seq_puts(seq, "fragment:block");
1942 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
1943 if (test_opt(sbi, RESERVE_ROOT))
1944 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
1945 F2FS_OPTION(sbi).root_reserved_blocks,
1946 from_kuid_munged(&init_user_ns,
1947 F2FS_OPTION(sbi).s_resuid),
1948 from_kgid_munged(&init_user_ns,
1949 F2FS_OPTION(sbi).s_resgid));
1950 if (F2FS_IO_SIZE_BITS(sbi))
1951 seq_printf(seq, ",io_bits=%u",
1952 F2FS_OPTION(sbi).write_io_size_bits);
1953#ifdef CONFIG_F2FS_FAULT_INJECTION
1954 if (test_opt(sbi, FAULT_INJECTION)) {
1955 seq_printf(seq, ",fault_injection=%u",
1956 F2FS_OPTION(sbi).fault_info.inject_rate);
1957 seq_printf(seq, ",fault_type=%u",
1958 F2FS_OPTION(sbi).fault_info.inject_type);
1959 }
1960#endif
1961#ifdef CONFIG_QUOTA
1962 if (test_opt(sbi, QUOTA))
1963 seq_puts(seq, ",quota");
1964 if (test_opt(sbi, USRQUOTA))
1965 seq_puts(seq, ",usrquota");
1966 if (test_opt(sbi, GRPQUOTA))
1967 seq_puts(seq, ",grpquota");
1968 if (test_opt(sbi, PRJQUOTA))
1969 seq_puts(seq, ",prjquota");
1970#endif
1971 f2fs_show_quota_options(seq, sbi->sb);
1972 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
1973 seq_printf(seq, ",whint_mode=%s", "user-based");
1974 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
1975 seq_printf(seq, ",whint_mode=%s", "fs-based");
1976
1977 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
1978
1979 if (sbi->sb->s_flags & SB_INLINECRYPT)
1980 seq_puts(seq, ",inlinecrypt");
1981
1982 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
1983 seq_printf(seq, ",alloc_mode=%s", "default");
1984 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
1985 seq_printf(seq, ",alloc_mode=%s", "reuse");
1986
1987 if (test_opt(sbi, DISABLE_CHECKPOINT))
1988 seq_printf(seq, ",checkpoint=disable:%u",
1989 F2FS_OPTION(sbi).unusable_cap);
1990 if (test_opt(sbi, MERGE_CHECKPOINT))
1991 seq_puts(seq, ",checkpoint_merge");
1992 else
1993 seq_puts(seq, ",nocheckpoint_merge");
1994 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
1995 seq_printf(seq, ",fsync_mode=%s", "posix");
1996 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
1997 seq_printf(seq, ",fsync_mode=%s", "strict");
1998 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1999 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
2000
2001#ifdef CONFIG_F2FS_FS_COMPRESSION
2002 f2fs_show_compress_options(seq, sbi->sb);
2003#endif
2004
2005 if (test_opt(sbi, ATGC))
2006 seq_puts(seq, ",atgc");
2007
2008 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK)
2009 seq_printf(seq, ",discard_unit=%s", "block");
2010 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT)
2011 seq_printf(seq, ",discard_unit=%s", "segment");
2012 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION)
2013 seq_printf(seq, ",discard_unit=%s", "section");
2014
2015 return 0;
2016}
2017
2018static void default_options(struct f2fs_sb_info *sbi)
2019{
2020
2021 if (f2fs_sb_has_readonly(sbi))
2022 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE;
2023 else
2024 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
2025
2026 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
2027 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
2028 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
2029 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
2030 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
2031 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
2032 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
2033 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
2034 F2FS_OPTION(sbi).compress_ext_cnt = 0;
2035 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
2036 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
2037
2038 sbi->sb->s_flags &= ~SB_INLINECRYPT;
2039
2040 set_opt(sbi, INLINE_XATTR);
2041 set_opt(sbi, INLINE_DATA);
2042 set_opt(sbi, INLINE_DENTRY);
2043 set_opt(sbi, EXTENT_CACHE);
2044 set_opt(sbi, NOHEAP);
2045 clear_opt(sbi, DISABLE_CHECKPOINT);
2046 set_opt(sbi, MERGE_CHECKPOINT);
2047 F2FS_OPTION(sbi).unusable_cap = 0;
2048 sbi->sb->s_flags |= SB_LAZYTIME;
2049 set_opt(sbi, FLUSH_MERGE);
2050 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi))
2051 set_opt(sbi, DISCARD);
2052 if (f2fs_sb_has_blkzoned(sbi)) {
2053 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
2054 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION;
2055 } else {
2056 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
2057 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK;
2058 }
2059
2060#ifdef CONFIG_F2FS_FS_XATTR
2061 set_opt(sbi, XATTR_USER);
2062#endif
2063#ifdef CONFIG_F2FS_FS_POSIX_ACL
2064 set_opt(sbi, POSIX_ACL);
2065#endif
2066
2067 f2fs_build_fault_attr(sbi, 0, 0);
2068}
2069
2070#ifdef CONFIG_QUOTA
2071static int f2fs_enable_quotas(struct super_block *sb);
2072#endif
2073
2074static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
2075{
2076 unsigned int s_flags = sbi->sb->s_flags;
2077 struct cp_control cpc;
2078 int err = 0;
2079 int ret;
2080 block_t unusable;
2081
2082 if (s_flags & SB_RDONLY) {
2083 f2fs_err(sbi, "checkpoint=disable on readonly fs");
2084 return -EINVAL;
2085 }
2086 sbi->sb->s_flags |= SB_ACTIVE;
2087
2088 f2fs_update_time(sbi, DISABLE_TIME);
2089
2090 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
2091 down_write(&sbi->gc_lock);
2092 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
2093 if (err == -ENODATA) {
2094 err = 0;
2095 break;
2096 }
2097 if (err && err != -EAGAIN)
2098 break;
2099 }
2100
2101 ret = sync_filesystem(sbi->sb);
2102 if (ret || err) {
2103 err = ret ? ret : err;
2104 goto restore_flag;
2105 }
2106
2107 unusable = f2fs_get_unusable_blocks(sbi);
2108 if (f2fs_disable_cp_again(sbi, unusable)) {
2109 err = -EAGAIN;
2110 goto restore_flag;
2111 }
2112
2113 down_write(&sbi->gc_lock);
2114 cpc.reason = CP_PAUSE;
2115 set_sbi_flag(sbi, SBI_CP_DISABLED);
2116 err = f2fs_write_checkpoint(sbi, &cpc);
2117 if (err)
2118 goto out_unlock;
2119
2120 spin_lock(&sbi->stat_lock);
2121 sbi->unusable_block_count = unusable;
2122 spin_unlock(&sbi->stat_lock);
2123
2124out_unlock:
2125 up_write(&sbi->gc_lock);
2126restore_flag:
2127 sbi->sb->s_flags = s_flags;
2128 return err;
2129}
2130
2131static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
2132{
2133 int retry = DEFAULT_RETRY_IO_COUNT;
2134
2135
2136 do {
2137 sync_inodes_sb(sbi->sb);
2138 cond_resched();
2139 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
2140 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--);
2141
2142 if (unlikely(retry < 0))
2143 f2fs_warn(sbi, "checkpoint=enable has some unwritten data.");
2144
2145 down_write(&sbi->gc_lock);
2146 f2fs_dirty_to_prefree(sbi);
2147
2148 clear_sbi_flag(sbi, SBI_CP_DISABLED);
2149 set_sbi_flag(sbi, SBI_IS_DIRTY);
2150 up_write(&sbi->gc_lock);
2151
2152 f2fs_sync_fs(sbi->sb, 1);
2153}
2154
2155static int f2fs_remount(struct super_block *sb, int *flags, char *data)
2156{
2157 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2158 struct f2fs_mount_info org_mount_opt;
2159 unsigned long old_sb_flags;
2160 int err;
2161 bool need_restart_gc = false, need_stop_gc = false;
2162 bool need_restart_ckpt = false, need_stop_ckpt = false;
2163 bool need_restart_flush = false, need_stop_flush = false;
2164 bool need_restart_discard = false, need_stop_discard = false;
2165 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
2166 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT);
2167 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
2168 bool no_atgc = !test_opt(sbi, ATGC);
2169 bool no_discard = !test_opt(sbi, DISCARD);
2170 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE);
2171 bool block_unit_discard = f2fs_block_unit_discard(sbi);
2172 struct discard_cmd_control *dcc;
2173#ifdef CONFIG_QUOTA
2174 int i, j;
2175#endif
2176
2177
2178
2179
2180
2181 org_mount_opt = sbi->mount_opt;
2182 old_sb_flags = sb->s_flags;
2183
2184#ifdef CONFIG_QUOTA
2185 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
2186 for (i = 0; i < MAXQUOTAS; i++) {
2187 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2188 org_mount_opt.s_qf_names[i] =
2189 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
2190 GFP_KERNEL);
2191 if (!org_mount_opt.s_qf_names[i]) {
2192 for (j = 0; j < i; j++)
2193 kfree(org_mount_opt.s_qf_names[j]);
2194 return -ENOMEM;
2195 }
2196 } else {
2197 org_mount_opt.s_qf_names[i] = NULL;
2198 }
2199 }
2200#endif
2201
2202
2203 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
2204 err = f2fs_commit_super(sbi, false);
2205 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
2206 err);
2207 if (!err)
2208 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2209 }
2210
2211 default_options(sbi);
2212
2213
2214 err = parse_options(sb, data, true);
2215 if (err)
2216 goto restore_opts;
2217
2218
2219
2220
2221
2222 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
2223 goto skip;
2224
2225 if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) {
2226 err = -EROFS;
2227 goto restore_opts;
2228 }
2229
2230#ifdef CONFIG_QUOTA
2231 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
2232 err = dquot_suspend(sb, -1);
2233 if (err < 0)
2234 goto restore_opts;
2235 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
2236
2237 sb->s_flags &= ~SB_RDONLY;
2238 if (sb_any_quota_suspended(sb)) {
2239 dquot_resume(sb, -1);
2240 } else if (f2fs_sb_has_quota_ino(sbi)) {
2241 err = f2fs_enable_quotas(sb);
2242 if (err)
2243 goto restore_opts;
2244 }
2245 }
2246#endif
2247
2248 if (no_atgc == !!test_opt(sbi, ATGC)) {
2249 err = -EINVAL;
2250 f2fs_warn(sbi, "switch atgc option is not allowed");
2251 goto restore_opts;
2252 }
2253
2254
2255 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
2256 err = -EINVAL;
2257 f2fs_warn(sbi, "switch extent_cache option is not allowed");
2258 goto restore_opts;
2259 }
2260
2261 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
2262 err = -EINVAL;
2263 f2fs_warn(sbi, "switch io_bits option is not allowed");
2264 goto restore_opts;
2265 }
2266
2267 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) {
2268 err = -EINVAL;
2269 f2fs_warn(sbi, "switch compress_cache option is not allowed");
2270 goto restore_opts;
2271 }
2272
2273 if (block_unit_discard != f2fs_block_unit_discard(sbi)) {
2274 err = -EINVAL;
2275 f2fs_warn(sbi, "switch discard_unit option is not allowed");
2276 goto restore_opts;
2277 }
2278
2279 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
2280 err = -EINVAL;
2281 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
2282 goto restore_opts;
2283 }
2284
2285
2286
2287
2288
2289
2290 if ((*flags & SB_RDONLY) ||
2291 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF &&
2292 !test_opt(sbi, GC_MERGE))) {
2293 if (sbi->gc_thread) {
2294 f2fs_stop_gc_thread(sbi);
2295 need_restart_gc = true;
2296 }
2297 } else if (!sbi->gc_thread) {
2298 err = f2fs_start_gc_thread(sbi);
2299 if (err)
2300 goto restore_opts;
2301 need_stop_gc = true;
2302 }
2303
2304 if (*flags & SB_RDONLY ||
2305 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
2306 sync_inodes_sb(sb);
2307
2308 set_sbi_flag(sbi, SBI_IS_DIRTY);
2309 set_sbi_flag(sbi, SBI_IS_CLOSE);
2310 f2fs_sync_fs(sb, 1);
2311 clear_sbi_flag(sbi, SBI_IS_CLOSE);
2312 }
2313
2314 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
2315 !test_opt(sbi, MERGE_CHECKPOINT)) {
2316 f2fs_stop_ckpt_thread(sbi);
2317 need_restart_ckpt = true;
2318 } else {
2319 err = f2fs_start_ckpt_thread(sbi);
2320 if (err) {
2321 f2fs_err(sbi,
2322 "Failed to start F2FS issue_checkpoint_thread (%d)",
2323 err);
2324 goto restore_gc;
2325 }
2326 need_stop_ckpt = true;
2327 }
2328
2329
2330
2331
2332
2333 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
2334 clear_opt(sbi, FLUSH_MERGE);
2335 f2fs_destroy_flush_cmd_control(sbi, false);
2336 need_restart_flush = true;
2337 } else {
2338 err = f2fs_create_flush_cmd_control(sbi);
2339 if (err)
2340 goto restore_ckpt;
2341 need_stop_flush = true;
2342 }
2343
2344 if (no_discard == !!test_opt(sbi, DISCARD)) {
2345 if (test_opt(sbi, DISCARD)) {
2346 err = f2fs_start_discard_thread(sbi);
2347 if (err)
2348 goto restore_flush;
2349 need_stop_discard = true;
2350 } else {
2351 dcc = SM_I(sbi)->dcc_info;
2352 f2fs_stop_discard_thread(sbi);
2353 if (atomic_read(&dcc->discard_cmd_cnt))
2354 f2fs_issue_discard_timeout(sbi);
2355 need_restart_discard = true;
2356 }
2357 }
2358
2359 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) {
2360 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
2361 err = f2fs_disable_checkpoint(sbi);
2362 if (err)
2363 goto restore_discard;
2364 } else {
2365 f2fs_enable_checkpoint(sbi);
2366 }
2367 }
2368
2369skip:
2370#ifdef CONFIG_QUOTA
2371
2372 for (i = 0; i < MAXQUOTAS; i++)
2373 kfree(org_mount_opt.s_qf_names[i]);
2374#endif
2375
2376 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
2377 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
2378
2379 limit_reserve_root(sbi);
2380 adjust_unusable_cap_perc(sbi);
2381 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
2382 return 0;
2383restore_discard:
2384 if (need_restart_discard) {
2385 if (f2fs_start_discard_thread(sbi))
2386 f2fs_warn(sbi, "discard has been stopped");
2387 } else if (need_stop_discard) {
2388 f2fs_stop_discard_thread(sbi);
2389 }
2390restore_flush:
2391 if (need_restart_flush) {
2392 if (f2fs_create_flush_cmd_control(sbi))
2393 f2fs_warn(sbi, "background flush thread has stopped");
2394 } else if (need_stop_flush) {
2395 clear_opt(sbi, FLUSH_MERGE);
2396 f2fs_destroy_flush_cmd_control(sbi, false);
2397 }
2398restore_ckpt:
2399 if (need_restart_ckpt) {
2400 if (f2fs_start_ckpt_thread(sbi))
2401 f2fs_warn(sbi, "background ckpt thread has stopped");
2402 } else if (need_stop_ckpt) {
2403 f2fs_stop_ckpt_thread(sbi);
2404 }
2405restore_gc:
2406 if (need_restart_gc) {
2407 if (f2fs_start_gc_thread(sbi))
2408 f2fs_warn(sbi, "background gc thread has stopped");
2409 } else if (need_stop_gc) {
2410 f2fs_stop_gc_thread(sbi);
2411 }
2412restore_opts:
2413#ifdef CONFIG_QUOTA
2414 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
2415 for (i = 0; i < MAXQUOTAS; i++) {
2416 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
2417 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
2418 }
2419#endif
2420 sbi->mount_opt = org_mount_opt;
2421 sb->s_flags = old_sb_flags;
2422 return err;
2423}
2424
2425#ifdef CONFIG_QUOTA
2426
2427static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
2428 size_t len, loff_t off)
2429{
2430 struct inode *inode = sb_dqopt(sb)->files[type];
2431 struct address_space *mapping = inode->i_mapping;
2432 block_t blkidx = F2FS_BYTES_TO_BLK(off);
2433 int offset = off & (sb->s_blocksize - 1);
2434 int tocopy;
2435 size_t toread;
2436 loff_t i_size = i_size_read(inode);
2437 struct page *page;
2438 char *kaddr;
2439
2440 if (off > i_size)
2441 return 0;
2442
2443 if (off + len > i_size)
2444 len = i_size - off;
2445 toread = len;
2446 while (toread > 0) {
2447 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
2448repeat:
2449 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
2450 if (IS_ERR(page)) {
2451 if (PTR_ERR(page) == -ENOMEM) {
2452 memalloc_retry_wait(GFP_NOFS);
2453 goto repeat;
2454 }
2455 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2456 return PTR_ERR(page);
2457 }
2458
2459 lock_page(page);
2460
2461 if (unlikely(page->mapping != mapping)) {
2462 f2fs_put_page(page, 1);
2463 goto repeat;
2464 }
2465 if (unlikely(!PageUptodate(page))) {
2466 f2fs_put_page(page, 1);
2467 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2468 return -EIO;
2469 }
2470
2471 kaddr = kmap_atomic(page);
2472 memcpy(data, kaddr + offset, tocopy);
2473 kunmap_atomic(kaddr);
2474 f2fs_put_page(page, 1);
2475
2476 offset = 0;
2477 toread -= tocopy;
2478 data += tocopy;
2479 blkidx++;
2480 }
2481 return len;
2482}
2483
2484
2485static ssize_t f2fs_quota_write(struct super_block *sb, int type,
2486 const char *data, size_t len, loff_t off)
2487{
2488 struct inode *inode = sb_dqopt(sb)->files[type];
2489 struct address_space *mapping = inode->i_mapping;
2490 const struct address_space_operations *a_ops = mapping->a_ops;
2491 int offset = off & (sb->s_blocksize - 1);
2492 size_t towrite = len;
2493 struct page *page;
2494 void *fsdata = NULL;
2495 char *kaddr;
2496 int err = 0;
2497 int tocopy;
2498
2499 while (towrite > 0) {
2500 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
2501 towrite);
2502retry:
2503 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
2504 &page, &fsdata);
2505 if (unlikely(err)) {
2506 if (err == -ENOMEM) {
2507 congestion_wait(BLK_RW_ASYNC,
2508 DEFAULT_IO_TIMEOUT);
2509 goto retry;
2510 }
2511 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2512 break;
2513 }
2514
2515 kaddr = kmap_atomic(page);
2516 memcpy(kaddr + offset, data, tocopy);
2517 kunmap_atomic(kaddr);
2518 flush_dcache_page(page);
2519
2520 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
2521 page, fsdata);
2522 offset = 0;
2523 towrite -= tocopy;
2524 off += tocopy;
2525 data += tocopy;
2526 cond_resched();
2527 }
2528
2529 if (len == towrite)
2530 return err;
2531 inode->i_mtime = inode->i_ctime = current_time(inode);
2532 f2fs_mark_inode_dirty_sync(inode, false);
2533 return len - towrite;
2534}
2535
2536int f2fs_dquot_initialize(struct inode *inode)
2537{
2538 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) {
2539 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_DQUOT_INIT);
2540 return -ESRCH;
2541 }
2542
2543 return dquot_initialize(inode);
2544}
2545
2546static struct dquot **f2fs_get_dquots(struct inode *inode)
2547{
2548 return F2FS_I(inode)->i_dquot;
2549}
2550
2551static qsize_t *f2fs_get_reserved_space(struct inode *inode)
2552{
2553 return &F2FS_I(inode)->i_reserved_quota;
2554}
2555
2556static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
2557{
2558 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
2559 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
2560 return 0;
2561 }
2562
2563 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
2564 F2FS_OPTION(sbi).s_jquota_fmt, type);
2565}
2566
2567int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
2568{
2569 int enabled = 0;
2570 int i, err;
2571
2572 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
2573 err = f2fs_enable_quotas(sbi->sb);
2574 if (err) {
2575 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
2576 return 0;
2577 }
2578 return 1;
2579 }
2580
2581 for (i = 0; i < MAXQUOTAS; i++) {
2582 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2583 err = f2fs_quota_on_mount(sbi, i);
2584 if (!err) {
2585 enabled = 1;
2586 continue;
2587 }
2588 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2589 err, i);
2590 }
2591 }
2592 return enabled;
2593}
2594
2595static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2596 unsigned int flags)
2597{
2598 struct inode *qf_inode;
2599 unsigned long qf_inum;
2600 int err;
2601
2602 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
2603
2604 qf_inum = f2fs_qf_ino(sb, type);
2605 if (!qf_inum)
2606 return -EPERM;
2607
2608 qf_inode = f2fs_iget(sb, qf_inum);
2609 if (IS_ERR(qf_inode)) {
2610 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
2611 return PTR_ERR(qf_inode);
2612 }
2613
2614
2615 qf_inode->i_flags |= S_NOQUOTA;
2616 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
2617 iput(qf_inode);
2618 return err;
2619}
2620
2621static int f2fs_enable_quotas(struct super_block *sb)
2622{
2623 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2624 int type, err = 0;
2625 unsigned long qf_inum;
2626 bool quota_mopt[MAXQUOTAS] = {
2627 test_opt(sbi, USRQUOTA),
2628 test_opt(sbi, GRPQUOTA),
2629 test_opt(sbi, PRJQUOTA),
2630 };
2631
2632 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
2633 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
2634 return 0;
2635 }
2636
2637 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2638
2639 for (type = 0; type < MAXQUOTAS; type++) {
2640 qf_inum = f2fs_qf_ino(sb, type);
2641 if (qf_inum) {
2642 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2643 DQUOT_USAGE_ENABLED |
2644 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2645 if (err) {
2646 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2647 type, err);
2648 for (type--; type >= 0; type--)
2649 dquot_quota_off(sb, type);
2650 set_sbi_flag(F2FS_SB(sb),
2651 SBI_QUOTA_NEED_REPAIR);
2652 return err;
2653 }
2654 }
2655 }
2656 return 0;
2657}
2658
2659static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type)
2660{
2661 struct quota_info *dqopt = sb_dqopt(sbi->sb);
2662 struct address_space *mapping = dqopt->files[type]->i_mapping;
2663 int ret = 0;
2664
2665 ret = dquot_writeback_dquots(sbi->sb, type);
2666 if (ret)
2667 goto out;
2668
2669 ret = filemap_fdatawrite(mapping);
2670 if (ret)
2671 goto out;
2672
2673
2674 if (is_journalled_quota(sbi))
2675 goto out;
2676
2677 ret = filemap_fdatawait(mapping);
2678
2679 truncate_inode_pages(&dqopt->files[type]->i_data, 0);
2680out:
2681 if (ret)
2682 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2683 return ret;
2684}
2685
2686int f2fs_quota_sync(struct super_block *sb, int type)
2687{
2688 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2689 struct quota_info *dqopt = sb_dqopt(sb);
2690 int cnt;
2691 int ret;
2692
2693
2694
2695
2696
2697 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
2698
2699 if (type != -1 && cnt != type)
2700 continue;
2701
2702 if (!sb_has_quota_active(sb, type))
2703 return 0;
2704
2705 inode_lock(dqopt->files[cnt]);
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716 f2fs_lock_op(sbi);
2717 down_read(&sbi->quota_sem);
2718
2719 ret = f2fs_quota_sync_file(sbi, cnt);
2720
2721 up_read(&sbi->quota_sem);
2722 f2fs_unlock_op(sbi);
2723
2724 inode_unlock(dqopt->files[cnt]);
2725
2726 if (ret)
2727 break;
2728 }
2729 return ret;
2730}
2731
2732static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2733 const struct path *path)
2734{
2735 struct inode *inode;
2736 int err;
2737
2738
2739 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2740 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2741 return -EBUSY;
2742 }
2743
2744 err = f2fs_quota_sync(sb, type);
2745 if (err)
2746 return err;
2747
2748 err = dquot_quota_on(sb, type, format_id, path);
2749 if (err)
2750 return err;
2751
2752 inode = d_inode(path->dentry);
2753
2754 inode_lock(inode);
2755 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
2756 f2fs_set_inode_flags(inode);
2757 inode_unlock(inode);
2758 f2fs_mark_inode_dirty_sync(inode, false);
2759
2760 return 0;
2761}
2762
2763static int __f2fs_quota_off(struct super_block *sb, int type)
2764{
2765 struct inode *inode = sb_dqopt(sb)->files[type];
2766 int err;
2767
2768 if (!inode || !igrab(inode))
2769 return dquot_quota_off(sb, type);
2770
2771 err = f2fs_quota_sync(sb, type);
2772 if (err)
2773 goto out_put;
2774
2775 err = dquot_quota_off(sb, type);
2776 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
2777 goto out_put;
2778
2779 inode_lock(inode);
2780 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
2781 f2fs_set_inode_flags(inode);
2782 inode_unlock(inode);
2783 f2fs_mark_inode_dirty_sync(inode, false);
2784out_put:
2785 iput(inode);
2786 return err;
2787}
2788
2789static int f2fs_quota_off(struct super_block *sb, int type)
2790{
2791 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2792 int err;
2793
2794 err = __f2fs_quota_off(sb, type);
2795
2796
2797
2798
2799
2800
2801 if (is_journalled_quota(sbi))
2802 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2803 return err;
2804}
2805
2806void f2fs_quota_off_umount(struct super_block *sb)
2807{
2808 int type;
2809 int err;
2810
2811 for (type = 0; type < MAXQUOTAS; type++) {
2812 err = __f2fs_quota_off(sb, type);
2813 if (err) {
2814 int ret = dquot_quota_off(sb, type);
2815
2816 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2817 type, err, ret);
2818 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2819 }
2820 }
2821
2822
2823
2824
2825
2826 sync_filesystem(sb);
2827}
2828
2829static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2830{
2831 struct quota_info *dqopt = sb_dqopt(sb);
2832 int type;
2833
2834 for (type = 0; type < MAXQUOTAS; type++) {
2835 if (!dqopt->files[type])
2836 continue;
2837 f2fs_inode_synced(dqopt->files[type]);
2838 }
2839}
2840
2841static int f2fs_dquot_commit(struct dquot *dquot)
2842{
2843 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2844 int ret;
2845
2846 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
2847 ret = dquot_commit(dquot);
2848 if (ret < 0)
2849 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2850 up_read(&sbi->quota_sem);
2851 return ret;
2852}
2853
2854static int f2fs_dquot_acquire(struct dquot *dquot)
2855{
2856 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2857 int ret;
2858
2859 down_read(&sbi->quota_sem);
2860 ret = dquot_acquire(dquot);
2861 if (ret < 0)
2862 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2863 up_read(&sbi->quota_sem);
2864 return ret;
2865}
2866
2867static int f2fs_dquot_release(struct dquot *dquot)
2868{
2869 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2870 int ret = dquot_release(dquot);
2871
2872 if (ret < 0)
2873 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2874 return ret;
2875}
2876
2877static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2878{
2879 struct super_block *sb = dquot->dq_sb;
2880 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2881 int ret = dquot_mark_dquot_dirty(dquot);
2882
2883
2884 if (is_journalled_quota(sbi))
2885 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2886
2887 return ret;
2888}
2889
2890static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2891{
2892 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2893 int ret = dquot_commit_info(sb, type);
2894
2895 if (ret < 0)
2896 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2897 return ret;
2898}
2899
2900static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
2901{
2902 *projid = F2FS_I(inode)->i_projid;
2903 return 0;
2904}
2905
2906static const struct dquot_operations f2fs_quota_operations = {
2907 .get_reserved_space = f2fs_get_reserved_space,
2908 .write_dquot = f2fs_dquot_commit,
2909 .acquire_dquot = f2fs_dquot_acquire,
2910 .release_dquot = f2fs_dquot_release,
2911 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2912 .write_info = f2fs_dquot_commit_info,
2913 .alloc_dquot = dquot_alloc,
2914 .destroy_dquot = dquot_destroy,
2915 .get_projid = f2fs_get_projid,
2916 .get_next_id = dquot_get_next_id,
2917};
2918
2919static const struct quotactl_ops f2fs_quotactl_ops = {
2920 .quota_on = f2fs_quota_on,
2921 .quota_off = f2fs_quota_off,
2922 .quota_sync = f2fs_quota_sync,
2923 .get_state = dquot_get_state,
2924 .set_info = dquot_set_dqinfo,
2925 .get_dqblk = dquot_get_dqblk,
2926 .set_dqblk = dquot_set_dqblk,
2927 .get_nextdqblk = dquot_get_next_dqblk,
2928};
2929#else
2930int f2fs_dquot_initialize(struct inode *inode)
2931{
2932 return 0;
2933}
2934
2935int f2fs_quota_sync(struct super_block *sb, int type)
2936{
2937 return 0;
2938}
2939
2940void f2fs_quota_off_umount(struct super_block *sb)
2941{
2942}
2943#endif
2944
2945static const struct super_operations f2fs_sops = {
2946 .alloc_inode = f2fs_alloc_inode,
2947 .free_inode = f2fs_free_inode,
2948 .drop_inode = f2fs_drop_inode,
2949 .write_inode = f2fs_write_inode,
2950 .dirty_inode = f2fs_dirty_inode,
2951 .show_options = f2fs_show_options,
2952#ifdef CONFIG_QUOTA
2953 .quota_read = f2fs_quota_read,
2954 .quota_write = f2fs_quota_write,
2955 .get_dquots = f2fs_get_dquots,
2956#endif
2957 .evict_inode = f2fs_evict_inode,
2958 .put_super = f2fs_put_super,
2959 .sync_fs = f2fs_sync_fs,
2960 .freeze_fs = f2fs_freeze,
2961 .unfreeze_fs = f2fs_unfreeze,
2962 .statfs = f2fs_statfs,
2963 .remount_fs = f2fs_remount,
2964};
2965
2966#ifdef CONFIG_FS_ENCRYPTION
2967static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2968{
2969 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2970 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2971 ctx, len, NULL);
2972}
2973
2974static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2975 void *fs_data)
2976{
2977 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2978
2979
2980
2981
2982
2983
2984
2985 if (f2fs_sb_has_lost_found(sbi) &&
2986 inode->i_ino == F2FS_ROOT_INO(sbi))
2987 return -EPERM;
2988
2989 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2990 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2991 ctx, len, fs_data, XATTR_CREATE);
2992}
2993
2994static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
2995{
2996 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy;
2997}
2998
2999static bool f2fs_has_stable_inodes(struct super_block *sb)
3000{
3001 return true;
3002}
3003
3004static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
3005 int *ino_bits_ret, int *lblk_bits_ret)
3006{
3007 *ino_bits_ret = 8 * sizeof(nid_t);
3008 *lblk_bits_ret = 8 * sizeof(block_t);
3009}
3010
3011static int f2fs_get_num_devices(struct super_block *sb)
3012{
3013 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3014
3015 if (f2fs_is_multi_device(sbi))
3016 return sbi->s_ndevs;
3017 return 1;
3018}
3019
3020static void f2fs_get_devices(struct super_block *sb,
3021 struct request_queue **devs)
3022{
3023 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3024 int i;
3025
3026 for (i = 0; i < sbi->s_ndevs; i++)
3027 devs[i] = bdev_get_queue(FDEV(i).bdev);
3028}
3029
3030static const struct fscrypt_operations f2fs_cryptops = {
3031 .key_prefix = "f2fs:",
3032 .get_context = f2fs_get_context,
3033 .set_context = f2fs_set_context,
3034 .get_dummy_policy = f2fs_get_dummy_policy,
3035 .empty_dir = f2fs_empty_dir,
3036 .has_stable_inodes = f2fs_has_stable_inodes,
3037 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
3038 .get_num_devices = f2fs_get_num_devices,
3039 .get_devices = f2fs_get_devices,
3040};
3041#endif
3042
3043static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
3044 u64 ino, u32 generation)
3045{
3046 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3047 struct inode *inode;
3048
3049 if (f2fs_check_nid_range(sbi, ino))
3050 return ERR_PTR(-ESTALE);
3051
3052
3053
3054
3055
3056
3057 inode = f2fs_iget(sb, ino);
3058 if (IS_ERR(inode))
3059 return ERR_CAST(inode);
3060 if (unlikely(generation && inode->i_generation != generation)) {
3061
3062 iput(inode);
3063 return ERR_PTR(-ESTALE);
3064 }
3065 return inode;
3066}
3067
3068static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
3069 int fh_len, int fh_type)
3070{
3071 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
3072 f2fs_nfs_get_inode);
3073}
3074
3075static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
3076 int fh_len, int fh_type)
3077{
3078 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
3079 f2fs_nfs_get_inode);
3080}
3081
3082static const struct export_operations f2fs_export_ops = {
3083 .fh_to_dentry = f2fs_fh_to_dentry,
3084 .fh_to_parent = f2fs_fh_to_parent,
3085 .get_parent = f2fs_get_parent,
3086};
3087
3088loff_t max_file_blocks(struct inode *inode)
3089{
3090 loff_t result = 0;
3091 loff_t leaf_count;
3092
3093
3094
3095
3096
3097
3098
3099
3100 if (inode && f2fs_compressed_file(inode))
3101 leaf_count = ADDRS_PER_BLOCK(inode);
3102 else
3103 leaf_count = DEF_ADDRS_PER_BLOCK;
3104
3105
3106 result += (leaf_count * 2);
3107
3108
3109 leaf_count *= NIDS_PER_BLOCK;
3110 result += (leaf_count * 2);
3111
3112
3113 leaf_count *= NIDS_PER_BLOCK;
3114 result += leaf_count;
3115
3116 return result;
3117}
3118
3119static int __f2fs_commit_super(struct buffer_head *bh,
3120 struct f2fs_super_block *super)
3121{
3122 lock_buffer(bh);
3123 if (super)
3124 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
3125 set_buffer_dirty(bh);
3126 unlock_buffer(bh);
3127
3128
3129 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
3130}
3131
3132static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
3133 struct buffer_head *bh)
3134{
3135 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3136 (bh->b_data + F2FS_SUPER_OFFSET);
3137 struct super_block *sb = sbi->sb;
3138 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
3139 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
3140 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
3141 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
3142 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
3143 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
3144 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
3145 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
3146 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
3147 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
3148 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3149 u32 segment_count = le32_to_cpu(raw_super->segment_count);
3150 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3151 u64 main_end_blkaddr = main_blkaddr +
3152 (segment_count_main << log_blocks_per_seg);
3153 u64 seg_end_blkaddr = segment0_blkaddr +
3154 (segment_count << log_blocks_per_seg);
3155
3156 if (segment0_blkaddr != cp_blkaddr) {
3157 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
3158 segment0_blkaddr, cp_blkaddr);
3159 return true;
3160 }
3161
3162 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
3163 sit_blkaddr) {
3164 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
3165 cp_blkaddr, sit_blkaddr,
3166 segment_count_ckpt << log_blocks_per_seg);
3167 return true;
3168 }
3169
3170 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
3171 nat_blkaddr) {
3172 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
3173 sit_blkaddr, nat_blkaddr,
3174 segment_count_sit << log_blocks_per_seg);
3175 return true;
3176 }
3177
3178 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
3179 ssa_blkaddr) {
3180 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
3181 nat_blkaddr, ssa_blkaddr,
3182 segment_count_nat << log_blocks_per_seg);
3183 return true;
3184 }
3185
3186 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
3187 main_blkaddr) {
3188 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
3189 ssa_blkaddr, main_blkaddr,
3190 segment_count_ssa << log_blocks_per_seg);
3191 return true;
3192 }
3193
3194 if (main_end_blkaddr > seg_end_blkaddr) {
3195 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)",
3196 main_blkaddr, seg_end_blkaddr,
3197 segment_count_main << log_blocks_per_seg);
3198 return true;
3199 } else if (main_end_blkaddr < seg_end_blkaddr) {
3200 int err = 0;
3201 char *res;
3202
3203
3204 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
3205 segment0_blkaddr) >> log_blocks_per_seg);
3206
3207 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
3208 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3209 res = "internally";
3210 } else {
3211 err = __f2fs_commit_super(bh, NULL);
3212 res = err ? "failed" : "done";
3213 }
3214 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)",
3215 res, main_blkaddr, seg_end_blkaddr,
3216 segment_count_main << log_blocks_per_seg);
3217 if (err)
3218 return true;
3219 }
3220 return false;
3221}
3222
3223static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
3224 struct buffer_head *bh)
3225{
3226 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main;
3227 block_t total_sections, blocks_per_seg;
3228 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3229 (bh->b_data + F2FS_SUPER_OFFSET);
3230 size_t crc_offset = 0;
3231 __u32 crc = 0;
3232
3233 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
3234 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
3235 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
3236 return -EINVAL;
3237 }
3238
3239
3240 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
3241 crc_offset = le32_to_cpu(raw_super->checksum_offset);
3242 if (crc_offset !=
3243 offsetof(struct f2fs_super_block, crc)) {
3244 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
3245 crc_offset);
3246 return -EFSCORRUPTED;
3247 }
3248 crc = le32_to_cpu(raw_super->crc);
3249 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
3250 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
3251 return -EFSCORRUPTED;
3252 }
3253 }
3254
3255
3256 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) {
3257 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u",
3258 le32_to_cpu(raw_super->log_blocksize),
3259 F2FS_BLKSIZE_BITS);
3260 return -EFSCORRUPTED;
3261 }
3262
3263
3264 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
3265 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
3266 le32_to_cpu(raw_super->log_blocks_per_seg));
3267 return -EFSCORRUPTED;
3268 }
3269
3270
3271 if (le32_to_cpu(raw_super->log_sectorsize) >
3272 F2FS_MAX_LOG_SECTOR_SIZE ||
3273 le32_to_cpu(raw_super->log_sectorsize) <
3274 F2FS_MIN_LOG_SECTOR_SIZE) {
3275 f2fs_info(sbi, "Invalid log sectorsize (%u)",
3276 le32_to_cpu(raw_super->log_sectorsize));
3277 return -EFSCORRUPTED;
3278 }
3279 if (le32_to_cpu(raw_super->log_sectors_per_block) +
3280 le32_to_cpu(raw_super->log_sectorsize) !=
3281 F2FS_MAX_LOG_SECTOR_SIZE) {
3282 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
3283 le32_to_cpu(raw_super->log_sectors_per_block),
3284 le32_to_cpu(raw_super->log_sectorsize));
3285 return -EFSCORRUPTED;
3286 }
3287
3288 segment_count = le32_to_cpu(raw_super->segment_count);
3289 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3290 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3291 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3292 total_sections = le32_to_cpu(raw_super->section_count);
3293
3294
3295 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
3296
3297 if (segment_count > F2FS_MAX_SEGMENT ||
3298 segment_count < F2FS_MIN_SEGMENTS) {
3299 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
3300 return -EFSCORRUPTED;
3301 }
3302
3303 if (total_sections > segment_count_main || total_sections < 1 ||
3304 segs_per_sec > segment_count || !segs_per_sec) {
3305 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
3306 segment_count, total_sections, segs_per_sec);
3307 return -EFSCORRUPTED;
3308 }
3309
3310 if (segment_count_main != total_sections * segs_per_sec) {
3311 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)",
3312 segment_count_main, total_sections, segs_per_sec);
3313 return -EFSCORRUPTED;
3314 }
3315
3316 if ((segment_count / segs_per_sec) < total_sections) {
3317 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
3318 segment_count, segs_per_sec, total_sections);
3319 return -EFSCORRUPTED;
3320 }
3321
3322 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
3323 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
3324 segment_count, le64_to_cpu(raw_super->block_count));
3325 return -EFSCORRUPTED;
3326 }
3327
3328 if (RDEV(0).path[0]) {
3329 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
3330 int i = 1;
3331
3332 while (i < MAX_DEVICES && RDEV(i).path[0]) {
3333 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
3334 i++;
3335 }
3336 if (segment_count != dev_seg_count) {
3337 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
3338 segment_count, dev_seg_count);
3339 return -EFSCORRUPTED;
3340 }
3341 } else {
3342 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) &&
3343 !bdev_is_zoned(sbi->sb->s_bdev)) {
3344 f2fs_info(sbi, "Zoned block device path is missing");
3345 return -EFSCORRUPTED;
3346 }
3347 }
3348
3349 if (secs_per_zone > total_sections || !secs_per_zone) {
3350 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
3351 secs_per_zone, total_sections);
3352 return -EFSCORRUPTED;
3353 }
3354 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
3355 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
3356 (le32_to_cpu(raw_super->extension_count) +
3357 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
3358 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
3359 le32_to_cpu(raw_super->extension_count),
3360 raw_super->hot_ext_count,
3361 F2FS_MAX_EXTENSION);
3362 return -EFSCORRUPTED;
3363 }
3364
3365 if (le32_to_cpu(raw_super->cp_payload) >=
3366 (blocks_per_seg - F2FS_CP_PACKS -
3367 NR_CURSEG_PERSIST_TYPE)) {
3368 f2fs_info(sbi, "Insane cp_payload (%u >= %u)",
3369 le32_to_cpu(raw_super->cp_payload),
3370 blocks_per_seg - F2FS_CP_PACKS -
3371 NR_CURSEG_PERSIST_TYPE);
3372 return -EFSCORRUPTED;
3373 }
3374
3375
3376 if (le32_to_cpu(raw_super->node_ino) != 1 ||
3377 le32_to_cpu(raw_super->meta_ino) != 2 ||
3378 le32_to_cpu(raw_super->root_ino) != 3) {
3379 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
3380 le32_to_cpu(raw_super->node_ino),
3381 le32_to_cpu(raw_super->meta_ino),
3382 le32_to_cpu(raw_super->root_ino));
3383 return -EFSCORRUPTED;
3384 }
3385
3386
3387 if (sanity_check_area_boundary(sbi, bh))
3388 return -EFSCORRUPTED;
3389
3390 return 0;
3391}
3392
3393int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
3394{
3395 unsigned int total, fsmeta;
3396 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3397 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3398 unsigned int ovp_segments, reserved_segments;
3399 unsigned int main_segs, blocks_per_seg;
3400 unsigned int sit_segs, nat_segs;
3401 unsigned int sit_bitmap_size, nat_bitmap_size;
3402 unsigned int log_blocks_per_seg;
3403 unsigned int segment_count_main;
3404 unsigned int cp_pack_start_sum, cp_payload;
3405 block_t user_block_count, valid_user_blocks;
3406 block_t avail_node_count, valid_node_count;
3407 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks;
3408 int i, j;
3409
3410 total = le32_to_cpu(raw_super->segment_count);
3411 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
3412 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
3413 fsmeta += sit_segs;
3414 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
3415 fsmeta += nat_segs;
3416 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
3417 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
3418
3419 if (unlikely(fsmeta >= total))
3420 return 1;
3421
3422 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
3423 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
3424
3425 if (!f2fs_sb_has_readonly(sbi) &&
3426 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
3427 ovp_segments == 0 || reserved_segments == 0)) {
3428 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
3429 return 1;
3430 }
3431 user_block_count = le64_to_cpu(ckpt->user_block_count);
3432 segment_count_main = le32_to_cpu(raw_super->segment_count_main) +
3433 (f2fs_sb_has_readonly(sbi) ? 1 : 0);
3434 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3435 if (!user_block_count || user_block_count >=
3436 segment_count_main << log_blocks_per_seg) {
3437 f2fs_err(sbi, "Wrong user_block_count: %u",
3438 user_block_count);
3439 return 1;
3440 }
3441
3442 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
3443 if (valid_user_blocks > user_block_count) {
3444 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
3445 valid_user_blocks, user_block_count);
3446 return 1;
3447 }
3448
3449 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
3450 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
3451 if (valid_node_count > avail_node_count) {
3452 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
3453 valid_node_count, avail_node_count);
3454 return 1;
3455 }
3456
3457 main_segs = le32_to_cpu(raw_super->segment_count_main);
3458 blocks_per_seg = sbi->blocks_per_seg;
3459
3460 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3461 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
3462 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
3463 return 1;
3464
3465 if (f2fs_sb_has_readonly(sbi))
3466 goto check_data;
3467
3468 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
3469 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3470 le32_to_cpu(ckpt->cur_node_segno[j])) {
3471 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
3472 i, j,
3473 le32_to_cpu(ckpt->cur_node_segno[i]));
3474 return 1;
3475 }
3476 }
3477 }
3478check_data:
3479 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
3480 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
3481 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
3482 return 1;
3483
3484 if (f2fs_sb_has_readonly(sbi))
3485 goto skip_cross;
3486
3487 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
3488 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
3489 le32_to_cpu(ckpt->cur_data_segno[j])) {
3490 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
3491 i, j,
3492 le32_to_cpu(ckpt->cur_data_segno[i]));
3493 return 1;
3494 }
3495 }
3496 }
3497 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3498 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
3499 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3500 le32_to_cpu(ckpt->cur_data_segno[j])) {
3501 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
3502 i, j,
3503 le32_to_cpu(ckpt->cur_node_segno[i]));
3504 return 1;
3505 }
3506 }
3507 }
3508skip_cross:
3509 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
3510 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
3511
3512 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
3513 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
3514 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
3515 sit_bitmap_size, nat_bitmap_size);
3516 return 1;
3517 }
3518
3519 cp_pack_start_sum = __start_sum_addr(sbi);
3520 cp_payload = __cp_payload(sbi);
3521 if (cp_pack_start_sum < cp_payload + 1 ||
3522 cp_pack_start_sum > blocks_per_seg - 1 -
3523 NR_CURSEG_PERSIST_TYPE) {
3524 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
3525 cp_pack_start_sum);
3526 return 1;
3527 }
3528
3529 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
3530 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
3531 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
3532 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
3533 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
3534 le32_to_cpu(ckpt->checksum_offset));
3535 return 1;
3536 }
3537
3538 nat_blocks = nat_segs << log_blocks_per_seg;
3539 nat_bits_bytes = nat_blocks / BITS_PER_BYTE;
3540 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
3541 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) &&
3542 (cp_payload + F2FS_CP_PACKS +
3543 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) {
3544 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)",
3545 cp_payload, nat_bits_blocks);
3546 return 1;
3547 }
3548
3549 if (unlikely(f2fs_cp_error(sbi))) {
3550 f2fs_err(sbi, "A bug case: need to run fsck");
3551 return 1;
3552 }
3553 return 0;
3554}
3555
3556static void init_sb_info(struct f2fs_sb_info *sbi)
3557{
3558 struct f2fs_super_block *raw_super = sbi->raw_super;
3559 int i;
3560
3561 sbi->log_sectors_per_block =
3562 le32_to_cpu(raw_super->log_sectors_per_block);
3563 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
3564 sbi->blocksize = 1 << sbi->log_blocksize;
3565 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3566 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
3567 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3568 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3569 sbi->total_sections = le32_to_cpu(raw_super->section_count);
3570 sbi->total_node_count =
3571 (le32_to_cpu(raw_super->segment_count_nat) / 2)
3572 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
3573 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino);
3574 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino);
3575 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino);
3576 sbi->cur_victim_sec = NULL_SECNO;
3577 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
3578 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
3579 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
3580 sbi->migration_granularity = sbi->segs_per_sec;
3581 sbi->seq_file_ra_mul = MIN_RA_MUL;
3582 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE;
3583 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE;
3584 spin_lock_init(&sbi->gc_urgent_high_lock);
3585
3586 sbi->dir_level = DEF_DIR_LEVEL;
3587 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
3588 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
3589 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
3590 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
3591 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
3592 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
3593 DEF_UMOUNT_DISCARD_TIMEOUT;
3594 clear_sbi_flag(sbi, SBI_NEED_FSCK);
3595
3596 for (i = 0; i < NR_COUNT_TYPE; i++)
3597 atomic_set(&sbi->nr_pages[i], 0);
3598
3599 for (i = 0; i < META; i++)
3600 atomic_set(&sbi->wb_sync_req[i], 0);
3601
3602 INIT_LIST_HEAD(&sbi->s_list);
3603 mutex_init(&sbi->umount_mutex);
3604 init_rwsem(&sbi->io_order_lock);
3605 spin_lock_init(&sbi->cp_lock);
3606
3607 sbi->dirty_device = 0;
3608 spin_lock_init(&sbi->dev_lock);
3609
3610 init_rwsem(&sbi->sb_lock);
3611 init_rwsem(&sbi->pin_sem);
3612}
3613
3614static int init_percpu_info(struct f2fs_sb_info *sbi)
3615{
3616 int err;
3617
3618 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
3619 if (err)
3620 return err;
3621
3622 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
3623 GFP_KERNEL);
3624 if (err)
3625 percpu_counter_destroy(&sbi->alloc_valid_block_count);
3626
3627 return err;
3628}
3629
3630#ifdef CONFIG_BLK_DEV_ZONED
3631
3632struct f2fs_report_zones_args {
3633 struct f2fs_dev_info *dev;
3634 bool zone_cap_mismatch;
3635};
3636
3637static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
3638 void *data)
3639{
3640 struct f2fs_report_zones_args *rz_args = data;
3641
3642 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
3643 return 0;
3644
3645 set_bit(idx, rz_args->dev->blkz_seq);
3646 rz_args->dev->zone_capacity_blocks[idx] = zone->capacity >>
3647 F2FS_LOG_SECTORS_PER_BLOCK;
3648 if (zone->len != zone->capacity && !rz_args->zone_cap_mismatch)
3649 rz_args->zone_cap_mismatch = true;
3650
3651 return 0;
3652}
3653
3654static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
3655{
3656 struct block_device *bdev = FDEV(devi).bdev;
3657 sector_t nr_sectors = bdev_nr_sectors(bdev);
3658 struct f2fs_report_zones_args rep_zone_arg;
3659 int ret;
3660
3661 if (!f2fs_sb_has_blkzoned(sbi))
3662 return 0;
3663
3664 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
3665 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3666 return -EINVAL;
3667 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3668 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3669 __ilog2_u32(sbi->blocks_per_blkz))
3670 return -EINVAL;
3671 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3672 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3673 sbi->log_blocks_per_blkz;
3674 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3675 FDEV(devi).nr_blkz++;
3676
3677 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
3678 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3679 * sizeof(unsigned long),
3680 GFP_KERNEL);
3681 if (!FDEV(devi).blkz_seq)
3682 return -ENOMEM;
3683
3684
3685 FDEV(devi).zone_capacity_blocks = f2fs_kzalloc(sbi,
3686 FDEV(devi).nr_blkz * sizeof(block_t),
3687 GFP_KERNEL);
3688 if (!FDEV(devi).zone_capacity_blocks)
3689 return -ENOMEM;
3690
3691 rep_zone_arg.dev = &FDEV(devi);
3692 rep_zone_arg.zone_cap_mismatch = false;
3693
3694 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3695 &rep_zone_arg);
3696 if (ret < 0)
3697 return ret;
3698
3699 if (!rep_zone_arg.zone_cap_mismatch) {
3700 kfree(FDEV(devi).zone_capacity_blocks);
3701 FDEV(devi).zone_capacity_blocks = NULL;
3702 }
3703
3704 return 0;
3705}
3706#endif
3707
3708
3709
3710
3711
3712
3713
3714static int read_raw_super_block(struct f2fs_sb_info *sbi,
3715 struct f2fs_super_block **raw_super,
3716 int *valid_super_block, int *recovery)
3717{
3718 struct super_block *sb = sbi->sb;
3719 int block;
3720 struct buffer_head *bh;
3721 struct f2fs_super_block *super;
3722 int err = 0;
3723
3724 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3725 if (!super)
3726 return -ENOMEM;
3727
3728 for (block = 0; block < 2; block++) {
3729 bh = sb_bread(sb, block);
3730 if (!bh) {
3731 f2fs_err(sbi, "Unable to read %dth superblock",
3732 block + 1);
3733 err = -EIO;
3734 *recovery = 1;
3735 continue;
3736 }
3737
3738
3739 err = sanity_check_raw_super(sbi, bh);
3740 if (err) {
3741 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3742 block + 1);
3743 brelse(bh);
3744 *recovery = 1;
3745 continue;
3746 }
3747
3748 if (!*raw_super) {
3749 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3750 sizeof(*super));
3751 *valid_super_block = block;
3752 *raw_super = super;
3753 }
3754 brelse(bh);
3755 }
3756
3757
3758 if (!*raw_super)
3759 kfree(super);
3760 else
3761 err = 0;
3762
3763 return err;
3764}
3765
3766int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
3767{
3768 struct buffer_head *bh;
3769 __u32 crc = 0;
3770 int err;
3771
3772 if ((recover && f2fs_readonly(sbi->sb)) ||
3773 bdev_read_only(sbi->sb->s_bdev)) {
3774 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3775 return -EROFS;
3776 }
3777
3778
3779 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
3780 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3781 offsetof(struct f2fs_super_block, crc));
3782 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3783 }
3784
3785
3786 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
3787 if (!bh)
3788 return -EIO;
3789 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3790 brelse(bh);
3791
3792
3793 if (recover || err)
3794 return err;
3795
3796
3797 bh = sb_bread(sbi->sb, sbi->valid_super_block);
3798 if (!bh)
3799 return -EIO;
3800 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3801 brelse(bh);
3802 return err;
3803}
3804
3805static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3806{
3807 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3808 unsigned int max_devices = MAX_DEVICES;
3809 unsigned int logical_blksize;
3810 int i;
3811
3812
3813 if (!RDEV(0).path[0]) {
3814 if (!bdev_is_zoned(sbi->sb->s_bdev))
3815 return 0;
3816 max_devices = 1;
3817 }
3818
3819
3820
3821
3822
3823 sbi->devs = f2fs_kzalloc(sbi,
3824 array_size(max_devices,
3825 sizeof(struct f2fs_dev_info)),
3826 GFP_KERNEL);
3827 if (!sbi->devs)
3828 return -ENOMEM;
3829
3830 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev);
3831 sbi->aligned_blksize = true;
3832
3833 for (i = 0; i < max_devices; i++) {
3834
3835 if (i > 0 && !RDEV(i).path[0])
3836 break;
3837
3838 if (max_devices == 1) {
3839
3840 FDEV(0).bdev =
3841 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3842 sbi->sb->s_mode, sbi->sb->s_type);
3843 } else {
3844
3845 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3846 FDEV(i).total_segments =
3847 le32_to_cpu(RDEV(i).total_segments);
3848 if (i == 0) {
3849 FDEV(i).start_blk = 0;
3850 FDEV(i).end_blk = FDEV(i).start_blk +
3851 (FDEV(i).total_segments <<
3852 sbi->log_blocks_per_seg) - 1 +
3853 le32_to_cpu(raw_super->segment0_blkaddr);
3854 } else {
3855 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3856 FDEV(i).end_blk = FDEV(i).start_blk +
3857 (FDEV(i).total_segments <<
3858 sbi->log_blocks_per_seg) - 1;
3859 }
3860 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3861 sbi->sb->s_mode, sbi->sb->s_type);
3862 }
3863 if (IS_ERR(FDEV(i).bdev))
3864 return PTR_ERR(FDEV(i).bdev);
3865
3866
3867 sbi->s_ndevs = i + 1;
3868
3869 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev))
3870 sbi->aligned_blksize = false;
3871
3872#ifdef CONFIG_BLK_DEV_ZONED
3873 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
3874 !f2fs_sb_has_blkzoned(sbi)) {
3875 f2fs_err(sbi, "Zoned block device feature not enabled");
3876 return -EINVAL;
3877 }
3878 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3879 if (init_blkz_info(sbi, i)) {
3880 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3881 return -EINVAL;
3882 }
3883 if (max_devices == 1)
3884 break;
3885 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3886 i, FDEV(i).path,
3887 FDEV(i).total_segments,
3888 FDEV(i).start_blk, FDEV(i).end_blk,
3889 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3890 "Host-aware" : "Host-managed");
3891 continue;
3892 }
3893#endif
3894 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3895 i, FDEV(i).path,
3896 FDEV(i).total_segments,
3897 FDEV(i).start_blk, FDEV(i).end_blk);
3898 }
3899 f2fs_info(sbi,
3900 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3901 return 0;
3902}
3903
3904static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3905{
3906#if IS_ENABLED(CONFIG_UNICODE)
3907 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) {
3908 const struct f2fs_sb_encodings *encoding_info;
3909 struct unicode_map *encoding;
3910 __u16 encoding_flags;
3911
3912 encoding_info = f2fs_sb_read_encoding(sbi->raw_super);
3913 if (!encoding_info) {
3914 f2fs_err(sbi,
3915 "Encoding requested by superblock is unknown");
3916 return -EINVAL;
3917 }
3918
3919 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags);
3920 encoding = utf8_load(encoding_info->version);
3921 if (IS_ERR(encoding)) {
3922 f2fs_err(sbi,
3923 "can't mount with superblock charset: %s-%u.%u.%u "
3924 "not supported by the kernel. flags: 0x%x.",
3925 encoding_info->name,
3926 unicode_major(encoding_info->version),
3927 unicode_minor(encoding_info->version),
3928 unicode_rev(encoding_info->version),
3929 encoding_flags);
3930 return PTR_ERR(encoding);
3931 }
3932 f2fs_info(sbi, "Using encoding defined by superblock: "
3933 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name,
3934 unicode_major(encoding_info->version),
3935 unicode_minor(encoding_info->version),
3936 unicode_rev(encoding_info->version),
3937 encoding_flags);
3938
3939 sbi->sb->s_encoding = encoding;
3940 sbi->sb->s_encoding_flags = encoding_flags;
3941 }
3942#else
3943 if (f2fs_sb_has_casefold(sbi)) {
3944 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3945 return -EINVAL;
3946 }
3947#endif
3948 return 0;
3949}
3950
3951static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3952{
3953 struct f2fs_sm_info *sm_i = SM_I(sbi);
3954
3955
3956 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
3957 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
3958 if (f2fs_block_unit_discard(sbi))
3959 sm_i->dcc_info->discard_granularity = 1;
3960 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3961 }
3962
3963 sbi->readdir_ra = 1;
3964}
3965
3966static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3967{
3968 struct f2fs_sb_info *sbi;
3969 struct f2fs_super_block *raw_super;
3970 struct inode *root;
3971 int err;
3972 bool skip_recovery = false, need_fsck = false;
3973 char *options = NULL;
3974 int recovery, i, valid_super_block;
3975 struct curseg_info *seg_i;
3976 int retry_cnt = 1;
3977
3978try_onemore:
3979 err = -EINVAL;
3980 raw_super = NULL;
3981 valid_super_block = -1;
3982 recovery = 0;
3983
3984
3985 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3986 if (!sbi)
3987 return -ENOMEM;
3988
3989 sbi->sb = sb;
3990
3991
3992 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3993 if (IS_ERR(sbi->s_chksum_driver)) {
3994 f2fs_err(sbi, "Cannot load crc32 driver.");
3995 err = PTR_ERR(sbi->s_chksum_driver);
3996 sbi->s_chksum_driver = NULL;
3997 goto free_sbi;
3998 }
3999
4000
4001 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
4002 f2fs_err(sbi, "unable to set blocksize");
4003 goto free_sbi;
4004 }
4005
4006 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
4007 &recovery);
4008 if (err)
4009 goto free_sbi;
4010
4011 sb->s_fs_info = sbi;
4012 sbi->raw_super = raw_super;
4013
4014
4015 if (f2fs_sb_has_inode_chksum(sbi))
4016 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
4017 sizeof(raw_super->uuid));
4018
4019 default_options(sbi);
4020
4021 options = kstrdup((const char *)data, GFP_KERNEL);
4022 if (data && !options) {
4023 err = -ENOMEM;
4024 goto free_sb_buf;
4025 }
4026
4027 err = parse_options(sb, options, false);
4028 if (err)
4029 goto free_options;
4030
4031 sb->s_maxbytes = max_file_blocks(NULL) <<
4032 le32_to_cpu(raw_super->log_blocksize);
4033 sb->s_max_links = F2FS_LINK_MAX;
4034
4035 err = f2fs_setup_casefold(sbi);
4036 if (err)
4037 goto free_options;
4038
4039#ifdef CONFIG_QUOTA
4040 sb->dq_op = &f2fs_quota_operations;
4041 sb->s_qcop = &f2fs_quotactl_ops;
4042 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
4043
4044 if (f2fs_sb_has_quota_ino(sbi)) {
4045 for (i = 0; i < MAXQUOTAS; i++) {
4046 if (f2fs_qf_ino(sbi->sb, i))
4047 sbi->nquota_files++;
4048 }
4049 }
4050#endif
4051
4052 sb->s_op = &f2fs_sops;
4053#ifdef CONFIG_FS_ENCRYPTION
4054 sb->s_cop = &f2fs_cryptops;
4055#endif
4056#ifdef CONFIG_FS_VERITY
4057 sb->s_vop = &f2fs_verityops;
4058#endif
4059 sb->s_xattr = f2fs_xattr_handlers;
4060 sb->s_export_op = &f2fs_export_ops;
4061 sb->s_magic = F2FS_SUPER_MAGIC;
4062 sb->s_time_gran = 1;
4063 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
4064 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
4065 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
4066 sb->s_iflags |= SB_I_CGROUPWB;
4067
4068
4069 sbi->valid_super_block = valid_super_block;
4070 init_rwsem(&sbi->gc_lock);
4071 mutex_init(&sbi->writepages);
4072 init_rwsem(&sbi->cp_global_sem);
4073 init_rwsem(&sbi->node_write);
4074 init_rwsem(&sbi->node_change);
4075
4076
4077 set_sbi_flag(sbi, SBI_POR_DOING);
4078 spin_lock_init(&sbi->stat_lock);
4079
4080 for (i = 0; i < NR_PAGE_TYPE; i++) {
4081 int n = (i == META) ? 1 : NR_TEMP_TYPE;
4082 int j;
4083
4084 sbi->write_io[i] =
4085 f2fs_kmalloc(sbi,
4086 array_size(n,
4087 sizeof(struct f2fs_bio_info)),
4088 GFP_KERNEL);
4089 if (!sbi->write_io[i]) {
4090 err = -ENOMEM;
4091 goto free_bio_info;
4092 }
4093
4094 for (j = HOT; j < n; j++) {
4095 init_rwsem(&sbi->write_io[i][j].io_rwsem);
4096 sbi->write_io[i][j].sbi = sbi;
4097 sbi->write_io[i][j].bio = NULL;
4098 spin_lock_init(&sbi->write_io[i][j].io_lock);
4099 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
4100 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
4101 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
4102 }
4103 }
4104
4105 init_rwsem(&sbi->cp_rwsem);
4106 init_rwsem(&sbi->quota_sem);
4107 init_waitqueue_head(&sbi->cp_wait);
4108 init_sb_info(sbi);
4109
4110 err = f2fs_init_iostat(sbi);
4111 if (err)
4112 goto free_bio_info;
4113
4114 err = init_percpu_info(sbi);
4115 if (err)
4116 goto free_iostat;
4117
4118 if (F2FS_IO_ALIGNED(sbi)) {
4119 sbi->write_io_dummy =
4120 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
4121 if (!sbi->write_io_dummy) {
4122 err = -ENOMEM;
4123 goto free_percpu;
4124 }
4125 }
4126
4127
4128 err = f2fs_init_xattr_caches(sbi);
4129 if (err)
4130 goto free_io_dummy;
4131 err = f2fs_init_page_array_cache(sbi);
4132 if (err)
4133 goto free_xattr_cache;
4134
4135
4136 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
4137 if (IS_ERR(sbi->meta_inode)) {
4138 f2fs_err(sbi, "Failed to read F2FS meta data inode");
4139 err = PTR_ERR(sbi->meta_inode);
4140 goto free_page_array_cache;
4141 }
4142
4143 err = f2fs_get_valid_checkpoint(sbi);
4144 if (err) {
4145 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
4146 goto free_meta_inode;
4147 }
4148
4149 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
4150 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
4151 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
4152 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4153 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
4154 }
4155
4156 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
4157 set_sbi_flag(sbi, SBI_NEED_FSCK);
4158
4159
4160 err = f2fs_scan_devices(sbi);
4161 if (err) {
4162 f2fs_err(sbi, "Failed to find devices");
4163 goto free_devices;
4164 }
4165
4166 err = f2fs_init_post_read_wq(sbi);
4167 if (err) {
4168 f2fs_err(sbi, "Failed to initialize post read workqueue");
4169 goto free_devices;
4170 }
4171
4172 sbi->total_valid_node_count =
4173 le32_to_cpu(sbi->ckpt->valid_node_count);
4174 percpu_counter_set(&sbi->total_valid_inode_count,
4175 le32_to_cpu(sbi->ckpt->valid_inode_count));
4176 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
4177 sbi->total_valid_block_count =
4178 le64_to_cpu(sbi->ckpt->valid_block_count);
4179 sbi->last_valid_block_count = sbi->total_valid_block_count;
4180 sbi->reserved_blocks = 0;
4181 sbi->current_reserved_blocks = 0;
4182 limit_reserve_root(sbi);
4183 adjust_unusable_cap_perc(sbi);
4184
4185 for (i = 0; i < NR_INODE_TYPE; i++) {
4186 INIT_LIST_HEAD(&sbi->inode_list[i]);
4187 spin_lock_init(&sbi->inode_lock[i]);
4188 }
4189 mutex_init(&sbi->flush_lock);
4190
4191 f2fs_init_extent_cache_info(sbi);
4192
4193 f2fs_init_ino_entry_info(sbi);
4194
4195 f2fs_init_fsync_node_info(sbi);
4196
4197
4198 f2fs_init_ckpt_req_control(sbi);
4199 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
4200 test_opt(sbi, MERGE_CHECKPOINT)) {
4201 err = f2fs_start_ckpt_thread(sbi);
4202 if (err) {
4203 f2fs_err(sbi,
4204 "Failed to start F2FS issue_checkpoint_thread (%d)",
4205 err);
4206 goto stop_ckpt_thread;
4207 }
4208 }
4209
4210
4211 err = f2fs_build_segment_manager(sbi);
4212 if (err) {
4213 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
4214 err);
4215 goto free_sm;
4216 }
4217 err = f2fs_build_node_manager(sbi);
4218 if (err) {
4219 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
4220 err);
4221 goto free_nm;
4222 }
4223
4224 err = adjust_reserved_segment(sbi);
4225 if (err)
4226 goto free_nm;
4227
4228
4229 sbi->sectors_written_start = f2fs_get_sectors_written(sbi);
4230
4231
4232 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
4233 if (__exist_node_summaries(sbi))
4234 sbi->kbytes_written =
4235 le64_to_cpu(seg_i->journal->info.kbytes_written);
4236
4237 f2fs_build_gc_manager(sbi);
4238
4239 err = f2fs_build_stats(sbi);
4240 if (err)
4241 goto free_nm;
4242
4243
4244 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
4245 if (IS_ERR(sbi->node_inode)) {
4246 f2fs_err(sbi, "Failed to read node inode");
4247 err = PTR_ERR(sbi->node_inode);
4248 goto free_stats;
4249 }
4250
4251
4252 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
4253 if (IS_ERR(root)) {
4254 f2fs_err(sbi, "Failed to read root inode");
4255 err = PTR_ERR(root);
4256 goto free_node_inode;
4257 }
4258 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
4259 !root->i_size || !root->i_nlink) {
4260 iput(root);
4261 err = -EINVAL;
4262 goto free_node_inode;
4263 }
4264
4265 sb->s_root = d_make_root(root);
4266 if (!sb->s_root) {
4267 err = -ENOMEM;
4268 goto free_node_inode;
4269 }
4270
4271 err = f2fs_init_compress_inode(sbi);
4272 if (err)
4273 goto free_root_inode;
4274
4275 err = f2fs_register_sysfs(sbi);
4276 if (err)
4277 goto free_compress_inode;
4278
4279#ifdef CONFIG_QUOTA
4280
4281 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
4282 err = f2fs_enable_quotas(sb);
4283 if (err)
4284 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
4285 }
4286#endif
4287
4288 err = f2fs_recover_orphan_inodes(sbi);
4289 if (err)
4290 goto free_meta;
4291
4292 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
4293 goto reset_checkpoint;
4294
4295
4296 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
4297 !test_opt(sbi, NORECOVERY)) {
4298
4299
4300
4301
4302 if (f2fs_hw_is_readonly(sbi)) {
4303 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4304 err = f2fs_recover_fsync_data(sbi, true);
4305 if (err > 0) {
4306 err = -EROFS;
4307 f2fs_err(sbi, "Need to recover fsync data, but "
4308 "write access unavailable, please try "
4309 "mount w/ disable_roll_forward or norecovery");
4310 }
4311 if (err < 0)
4312 goto free_meta;
4313 }
4314 f2fs_info(sbi, "write access unavailable, skipping recovery");
4315 goto reset_checkpoint;
4316 }
4317
4318 if (need_fsck)
4319 set_sbi_flag(sbi, SBI_NEED_FSCK);
4320
4321 if (skip_recovery)
4322 goto reset_checkpoint;
4323
4324 err = f2fs_recover_fsync_data(sbi, false);
4325 if (err < 0) {
4326 if (err != -ENOMEM)
4327 skip_recovery = true;
4328 need_fsck = true;
4329 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
4330 err);
4331 goto free_meta;
4332 }
4333 } else {
4334 err = f2fs_recover_fsync_data(sbi, true);
4335
4336 if (!f2fs_readonly(sb) && err > 0) {
4337 err = -EINVAL;
4338 f2fs_err(sbi, "Need to recover fsync data");
4339 goto free_meta;
4340 }
4341 }
4342
4343
4344
4345
4346
4347 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
4348 err = f2fs_check_write_pointer(sbi);
4349 if (err)
4350 goto free_meta;
4351 }
4352
4353reset_checkpoint:
4354 f2fs_init_inmem_curseg(sbi);
4355
4356
4357 clear_sbi_flag(sbi, SBI_POR_DOING);
4358
4359 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
4360 err = f2fs_disable_checkpoint(sbi);
4361 if (err)
4362 goto sync_free_meta;
4363 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
4364 f2fs_enable_checkpoint(sbi);
4365 }
4366
4367
4368
4369
4370
4371 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF ||
4372 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) {
4373
4374 err = f2fs_start_gc_thread(sbi);
4375 if (err)
4376 goto sync_free_meta;
4377 }
4378 kvfree(options);
4379
4380
4381 if (recovery) {
4382 err = f2fs_commit_super(sbi, true);
4383 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
4384 sbi->valid_super_block ? 1 : 2, err);
4385 }
4386
4387 f2fs_join_shrinker(sbi);
4388
4389 f2fs_tuning_parameters(sbi);
4390
4391 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
4392 cur_cp_version(F2FS_CKPT(sbi)));
4393 f2fs_update_time(sbi, CP_TIME);
4394 f2fs_update_time(sbi, REQ_TIME);
4395 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4396 return 0;
4397
4398sync_free_meta:
4399
4400 sync_filesystem(sbi->sb);
4401 retry_cnt = 0;
4402
4403free_meta:
4404#ifdef CONFIG_QUOTA
4405 f2fs_truncate_quota_inode_pages(sb);
4406 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
4407 f2fs_quota_off_umount(sbi->sb);
4408#endif
4409
4410
4411
4412
4413
4414
4415 truncate_inode_pages_final(META_MAPPING(sbi));
4416
4417 evict_inodes(sb);
4418 f2fs_unregister_sysfs(sbi);
4419free_compress_inode:
4420 f2fs_destroy_compress_inode(sbi);
4421free_root_inode:
4422 dput(sb->s_root);
4423 sb->s_root = NULL;
4424free_node_inode:
4425 f2fs_release_ino_entry(sbi, true);
4426 truncate_inode_pages_final(NODE_MAPPING(sbi));
4427 iput(sbi->node_inode);
4428 sbi->node_inode = NULL;
4429free_stats:
4430 f2fs_destroy_stats(sbi);
4431free_nm:
4432
4433 f2fs_stop_discard_thread(sbi);
4434 f2fs_destroy_node_manager(sbi);
4435free_sm:
4436 f2fs_destroy_segment_manager(sbi);
4437 f2fs_destroy_post_read_wq(sbi);
4438stop_ckpt_thread:
4439 f2fs_stop_ckpt_thread(sbi);
4440free_devices:
4441 destroy_device_list(sbi);
4442 kvfree(sbi->ckpt);
4443free_meta_inode:
4444 make_bad_inode(sbi->meta_inode);
4445 iput(sbi->meta_inode);
4446 sbi->meta_inode = NULL;
4447free_page_array_cache:
4448 f2fs_destroy_page_array_cache(sbi);
4449free_xattr_cache:
4450 f2fs_destroy_xattr_caches(sbi);
4451free_io_dummy:
4452 mempool_destroy(sbi->write_io_dummy);
4453free_percpu:
4454 destroy_percpu_info(sbi);
4455free_iostat:
4456 f2fs_destroy_iostat(sbi);
4457free_bio_info:
4458 for (i = 0; i < NR_PAGE_TYPE; i++)
4459 kvfree(sbi->write_io[i]);
4460
4461#if IS_ENABLED(CONFIG_UNICODE)
4462 utf8_unload(sb->s_encoding);
4463 sb->s_encoding = NULL;
4464#endif
4465free_options:
4466#ifdef CONFIG_QUOTA
4467 for (i = 0; i < MAXQUOTAS; i++)
4468 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4469#endif
4470 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
4471 kvfree(options);
4472free_sb_buf:
4473 kfree(raw_super);
4474free_sbi:
4475 if (sbi->s_chksum_driver)
4476 crypto_free_shash(sbi->s_chksum_driver);
4477 kfree(sbi);
4478
4479
4480 if (retry_cnt > 0 && skip_recovery) {
4481 retry_cnt--;
4482 shrink_dcache_sb(sb);
4483 goto try_onemore;
4484 }
4485 return err;
4486}
4487
4488static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
4489 const char *dev_name, void *data)
4490{
4491 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
4492}
4493
4494static void kill_f2fs_super(struct super_block *sb)
4495{
4496 if (sb->s_root) {
4497 struct f2fs_sb_info *sbi = F2FS_SB(sb);
4498
4499 set_sbi_flag(sbi, SBI_IS_CLOSE);
4500 f2fs_stop_gc_thread(sbi);
4501 f2fs_stop_discard_thread(sbi);
4502
4503#ifdef CONFIG_F2FS_FS_COMPRESSION
4504
4505
4506
4507
4508 if (test_opt(sbi, COMPRESS_CACHE))
4509 truncate_inode_pages_final(COMPRESS_MAPPING(sbi));
4510#endif
4511
4512 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
4513 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4514 struct cp_control cpc = {
4515 .reason = CP_UMOUNT,
4516 };
4517 f2fs_write_checkpoint(sbi, &cpc);
4518 }
4519
4520 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
4521 sb->s_flags &= ~SB_RDONLY;
4522 }
4523 kill_block_super(sb);
4524}
4525
4526static struct file_system_type f2fs_fs_type = {
4527 .owner = THIS_MODULE,
4528 .name = "f2fs",
4529 .mount = f2fs_mount,
4530 .kill_sb = kill_f2fs_super,
4531 .fs_flags = FS_REQUIRES_DEV,
4532};
4533MODULE_ALIAS_FS("f2fs");
4534
4535static int __init init_inodecache(void)
4536{
4537 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
4538 sizeof(struct f2fs_inode_info), 0,
4539 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
4540 if (!f2fs_inode_cachep)
4541 return -ENOMEM;
4542 return 0;
4543}
4544
4545static void destroy_inodecache(void)
4546{
4547
4548
4549
4550
4551 rcu_barrier();
4552 kmem_cache_destroy(f2fs_inode_cachep);
4553}
4554
4555static int __init init_f2fs_fs(void)
4556{
4557 int err;
4558
4559 if (PAGE_SIZE != F2FS_BLKSIZE) {
4560 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
4561 PAGE_SIZE, F2FS_BLKSIZE);
4562 return -EINVAL;
4563 }
4564
4565 err = init_inodecache();
4566 if (err)
4567 goto fail;
4568 err = f2fs_create_node_manager_caches();
4569 if (err)
4570 goto free_inodecache;
4571 err = f2fs_create_segment_manager_caches();
4572 if (err)
4573 goto free_node_manager_caches;
4574 err = f2fs_create_checkpoint_caches();
4575 if (err)
4576 goto free_segment_manager_caches;
4577 err = f2fs_create_recovery_cache();
4578 if (err)
4579 goto free_checkpoint_caches;
4580 err = f2fs_create_extent_cache();
4581 if (err)
4582 goto free_recovery_cache;
4583 err = f2fs_create_garbage_collection_cache();
4584 if (err)
4585 goto free_extent_cache;
4586 err = f2fs_init_sysfs();
4587 if (err)
4588 goto free_garbage_collection_cache;
4589 err = register_shrinker(&f2fs_shrinker_info);
4590 if (err)
4591 goto free_sysfs;
4592 err = register_filesystem(&f2fs_fs_type);
4593 if (err)
4594 goto free_shrinker;
4595 f2fs_create_root_stats();
4596 err = f2fs_init_post_read_processing();
4597 if (err)
4598 goto free_root_stats;
4599 err = f2fs_init_iostat_processing();
4600 if (err)
4601 goto free_post_read;
4602 err = f2fs_init_bio_entry_cache();
4603 if (err)
4604 goto free_iostat;
4605 err = f2fs_init_bioset();
4606 if (err)
4607 goto free_bio_enrty_cache;
4608 err = f2fs_init_compress_mempool();
4609 if (err)
4610 goto free_bioset;
4611 err = f2fs_init_compress_cache();
4612 if (err)
4613 goto free_compress_mempool;
4614 err = f2fs_create_casefold_cache();
4615 if (err)
4616 goto free_compress_cache;
4617 return 0;
4618free_compress_cache:
4619 f2fs_destroy_compress_cache();
4620free_compress_mempool:
4621 f2fs_destroy_compress_mempool();
4622free_bioset:
4623 f2fs_destroy_bioset();
4624free_bio_enrty_cache:
4625 f2fs_destroy_bio_entry_cache();
4626free_iostat:
4627 f2fs_destroy_iostat_processing();
4628free_post_read:
4629 f2fs_destroy_post_read_processing();
4630free_root_stats:
4631 f2fs_destroy_root_stats();
4632 unregister_filesystem(&f2fs_fs_type);
4633free_shrinker:
4634 unregister_shrinker(&f2fs_shrinker_info);
4635free_sysfs:
4636 f2fs_exit_sysfs();
4637free_garbage_collection_cache:
4638 f2fs_destroy_garbage_collection_cache();
4639free_extent_cache:
4640 f2fs_destroy_extent_cache();
4641free_recovery_cache:
4642 f2fs_destroy_recovery_cache();
4643free_checkpoint_caches:
4644 f2fs_destroy_checkpoint_caches();
4645free_segment_manager_caches:
4646 f2fs_destroy_segment_manager_caches();
4647free_node_manager_caches:
4648 f2fs_destroy_node_manager_caches();
4649free_inodecache:
4650 destroy_inodecache();
4651fail:
4652 return err;
4653}
4654
4655static void __exit exit_f2fs_fs(void)
4656{
4657 f2fs_destroy_casefold_cache();
4658 f2fs_destroy_compress_cache();
4659 f2fs_destroy_compress_mempool();
4660 f2fs_destroy_bioset();
4661 f2fs_destroy_bio_entry_cache();
4662 f2fs_destroy_iostat_processing();
4663 f2fs_destroy_post_read_processing();
4664 f2fs_destroy_root_stats();
4665 unregister_filesystem(&f2fs_fs_type);
4666 unregister_shrinker(&f2fs_shrinker_info);
4667 f2fs_exit_sysfs();
4668 f2fs_destroy_garbage_collection_cache();
4669 f2fs_destroy_extent_cache();
4670 f2fs_destroy_recovery_cache();
4671 f2fs_destroy_checkpoint_caches();
4672 f2fs_destroy_segment_manager_caches();
4673 f2fs_destroy_node_manager_caches();
4674 destroy_inodecache();
4675}
4676
4677module_init(init_f2fs_fs)
4678module_exit(exit_f2fs_fs)
4679
4680MODULE_AUTHOR("Samsung Electronics's Praesto Team");
4681MODULE_DESCRIPTION("Flash Friendly File System");
4682MODULE_LICENSE("GPL");
4683MODULE_SOFTDEP("pre: crc32");
4684
4685
