1
2
3
4
5
6
7
8#include <linux/module.h>
9#include <linux/init.h>
10#include <linux/fs.h>
11#include <linux/statfs.h>
12#include <linux/buffer_head.h>
13#include <linux/backing-dev.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
37#define CREATE_TRACE_POINTS
38#include <trace/events/f2fs.h>
39
40static struct kmem_cache *f2fs_inode_cachep;
41
42#ifdef CONFIG_F2FS_FAULT_INJECTION
43
44const char *f2fs_fault_name[FAULT_MAX] = {
45 [FAULT_KMALLOC] = "kmalloc",
46 [FAULT_KVMALLOC] = "kvmalloc",
47 [FAULT_PAGE_ALLOC] = "page alloc",
48 [FAULT_PAGE_GET] = "page get",
49 [FAULT_ALLOC_NID] = "alloc nid",
50 [FAULT_ORPHAN] = "orphan",
51 [FAULT_BLOCK] = "no more block",
52 [FAULT_DIR_DEPTH] = "too big dir depth",
53 [FAULT_EVICT_INODE] = "evict_inode fail",
54 [FAULT_TRUNCATE] = "truncate fail",
55 [FAULT_READ_IO] = "read IO error",
56 [FAULT_CHECKPOINT] = "checkpoint error",
57 [FAULT_DISCARD] = "discard error",
58 [FAULT_WRITE_IO] = "write IO error",
59};
60
61void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
62 unsigned int type)
63{
64 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
65
66 if (rate) {
67 atomic_set(&ffi->inject_ops, 0);
68 ffi->inject_rate = rate;
69 }
70
71 if (type)
72 ffi->inject_type = type;
73
74 if (!rate && !type)
75 memset(ffi, 0, sizeof(struct f2fs_fault_info));
76}
77#endif
78
79
80static struct shrinker f2fs_shrinker_info = {
81 .scan_objects = f2fs_shrink_scan,
82 .count_objects = f2fs_shrink_count,
83 .seeks = DEFAULT_SEEKS,
84};
85
86enum {
87 Opt_gc_background,
88 Opt_disable_roll_forward,
89 Opt_norecovery,
90 Opt_discard,
91 Opt_nodiscard,
92 Opt_noheap,
93 Opt_heap,
94 Opt_user_xattr,
95 Opt_nouser_xattr,
96 Opt_acl,
97 Opt_noacl,
98 Opt_active_logs,
99 Opt_disable_ext_identify,
100 Opt_inline_xattr,
101 Opt_noinline_xattr,
102 Opt_inline_xattr_size,
103 Opt_inline_data,
104 Opt_inline_dentry,
105 Opt_noinline_dentry,
106 Opt_flush_merge,
107 Opt_noflush_merge,
108 Opt_nobarrier,
109 Opt_fastboot,
110 Opt_extent_cache,
111 Opt_noextent_cache,
112 Opt_noinline_data,
113 Opt_data_flush,
114 Opt_reserve_root,
115 Opt_resgid,
116 Opt_resuid,
117 Opt_mode,
118 Opt_io_size_bits,
119 Opt_fault_injection,
120 Opt_fault_type,
121 Opt_lazytime,
122 Opt_nolazytime,
123 Opt_quota,
124 Opt_noquota,
125 Opt_usrquota,
126 Opt_grpquota,
127 Opt_prjquota,
128 Opt_usrjquota,
129 Opt_grpjquota,
130 Opt_prjjquota,
131 Opt_offusrjquota,
132 Opt_offgrpjquota,
133 Opt_offprjjquota,
134 Opt_jqfmt_vfsold,
135 Opt_jqfmt_vfsv0,
136 Opt_jqfmt_vfsv1,
137 Opt_whint,
138 Opt_alloc,
139 Opt_fsync,
140 Opt_test_dummy_encryption,
141 Opt_inlinecrypt,
142 Opt_checkpoint_disable,
143 Opt_checkpoint_disable_cap,
144 Opt_checkpoint_disable_cap_perc,
145 Opt_checkpoint_enable,
146 Opt_checkpoint_merge,
147 Opt_nocheckpoint_merge,
148 Opt_compress_algorithm,
149 Opt_compress_log_size,
150 Opt_compress_extension,
151 Opt_nocompress_extension,
152 Opt_compress_chksum,
153 Opt_compress_mode,
154 Opt_compress_cache,
155 Opt_atgc,
156 Opt_gc_merge,
157 Opt_nogc_merge,
158 Opt_err,
159};
160
161static match_table_t f2fs_tokens = {
162 {Opt_gc_background, "background_gc=%s"},
163 {Opt_disable_roll_forward, "disable_roll_forward"},
164 {Opt_norecovery, "norecovery"},
165 {Opt_discard, "discard"},
166 {Opt_nodiscard, "nodiscard"},
167 {Opt_noheap, "no_heap"},
168 {Opt_heap, "heap"},
169 {Opt_user_xattr, "user_xattr"},
170 {Opt_nouser_xattr, "nouser_xattr"},
171 {Opt_acl, "acl"},
172 {Opt_noacl, "noacl"},
173 {Opt_active_logs, "active_logs=%u"},
174 {Opt_disable_ext_identify, "disable_ext_identify"},
175 {Opt_inline_xattr, "inline_xattr"},
176 {Opt_noinline_xattr, "noinline_xattr"},
177 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
178 {Opt_inline_data, "inline_data"},
179 {Opt_inline_dentry, "inline_dentry"},
180 {Opt_noinline_dentry, "noinline_dentry"},
181 {Opt_flush_merge, "flush_merge"},
182 {Opt_noflush_merge, "noflush_merge"},
183 {Opt_nobarrier, "nobarrier"},
184 {Opt_fastboot, "fastboot"},
185 {Opt_extent_cache, "extent_cache"},
186 {Opt_noextent_cache, "noextent_cache"},
187 {Opt_noinline_data, "noinline_data"},
188 {Opt_data_flush, "data_flush"},
189 {Opt_reserve_root, "reserve_root=%u"},
190 {Opt_resgid, "resgid=%u"},
191 {Opt_resuid, "resuid=%u"},
192 {Opt_mode, "mode=%s"},
193 {Opt_io_size_bits, "io_bits=%u"},
194 {Opt_fault_injection, "fault_injection=%u"},
195 {Opt_fault_type, "fault_type=%u"},
196 {Opt_lazytime, "lazytime"},
197 {Opt_nolazytime, "nolazytime"},
198 {Opt_quota, "quota"},
199 {Opt_noquota, "noquota"},
200 {Opt_usrquota, "usrquota"},
201 {Opt_grpquota, "grpquota"},
202 {Opt_prjquota, "prjquota"},
203 {Opt_usrjquota, "usrjquota=%s"},
204 {Opt_grpjquota, "grpjquota=%s"},
205 {Opt_prjjquota, "prjjquota=%s"},
206 {Opt_offusrjquota, "usrjquota="},
207 {Opt_offgrpjquota, "grpjquota="},
208 {Opt_offprjjquota, "prjjquota="},
209 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
210 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
211 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
212 {Opt_whint, "whint_mode=%s"},
213 {Opt_alloc, "alloc_mode=%s"},
214 {Opt_fsync, "fsync_mode=%s"},
215 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
216 {Opt_test_dummy_encryption, "test_dummy_encryption"},
217 {Opt_inlinecrypt, "inlinecrypt"},
218 {Opt_checkpoint_disable, "checkpoint=disable"},
219 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
220 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
221 {Opt_checkpoint_enable, "checkpoint=enable"},
222 {Opt_checkpoint_merge, "checkpoint_merge"},
223 {Opt_nocheckpoint_merge, "nocheckpoint_merge"},
224 {Opt_compress_algorithm, "compress_algorithm=%s"},
225 {Opt_compress_log_size, "compress_log_size=%u"},
226 {Opt_compress_extension, "compress_extension=%s"},
227 {Opt_nocompress_extension, "nocompress_extension=%s"},
228 {Opt_compress_chksum, "compress_chksum"},
229 {Opt_compress_mode, "compress_mode=%s"},
230 {Opt_compress_cache, "compress_cache"},
231 {Opt_atgc, "atgc"},
232 {Opt_gc_merge, "gc_merge"},
233 {Opt_nogc_merge, "nogc_merge"},
234 {Opt_err, NULL},
235};
236
237void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
238{
239 struct va_format vaf;
240 va_list args;
241 int level;
242
243 va_start(args, fmt);
244
245 level = printk_get_level(fmt);
246 vaf.fmt = printk_skip_level(fmt);
247 vaf.va = &args;
248 printk("%c%cF2FS-fs (%s): %pV\n",
249 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
250
251 va_end(args);
252}
253
254#ifdef CONFIG_UNICODE
255static const struct f2fs_sb_encodings {
256 __u16 magic;
257 char *name;
258 char *version;
259} f2fs_sb_encoding_map[] = {
260 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
261};
262
263static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
264 const struct f2fs_sb_encodings **encoding,
265 __u16 *flags)
266{
267 __u16 magic = le16_to_cpu(sb->s_encoding);
268 int i;
269
270 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
271 if (magic == f2fs_sb_encoding_map[i].magic)
272 break;
273
274 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
275 return -EINVAL;
276
277 *encoding = &f2fs_sb_encoding_map[i];
278 *flags = le16_to_cpu(sb->s_encoding_flags);
279
280 return 0;
281}
282
283struct kmem_cache *f2fs_cf_name_slab;
284static int __init f2fs_create_casefold_cache(void)
285{
286 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name",
287 F2FS_NAME_LEN);
288 if (!f2fs_cf_name_slab)
289 return -ENOMEM;
290 return 0;
291}
292
293static void f2fs_destroy_casefold_cache(void)
294{
295 kmem_cache_destroy(f2fs_cf_name_slab);
296}
297#else
298static int __init f2fs_create_casefold_cache(void) { return 0; }
299static void f2fs_destroy_casefold_cache(void) { }
300#endif
301
302static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
303{
304 block_t limit = min((sbi->user_block_count << 1) / 1000,
305 sbi->user_block_count - sbi->reserved_blocks);
306
307
308 if (test_opt(sbi, RESERVE_ROOT) &&
309 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
310 F2FS_OPTION(sbi).root_reserved_blocks = limit;
311 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
312 F2FS_OPTION(sbi).root_reserved_blocks);
313 }
314 if (!test_opt(sbi, RESERVE_ROOT) &&
315 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
316 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
317 !gid_eq(F2FS_OPTION(sbi).s_resgid,
318 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
319 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
320 from_kuid_munged(&init_user_ns,
321 F2FS_OPTION(sbi).s_resuid),
322 from_kgid_munged(&init_user_ns,
323 F2FS_OPTION(sbi).s_resgid));
324}
325
326static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
327{
328 if (!F2FS_OPTION(sbi).unusable_cap_perc)
329 return;
330
331 if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
332 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
333 else
334 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
335 F2FS_OPTION(sbi).unusable_cap_perc;
336
337 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
338 F2FS_OPTION(sbi).unusable_cap,
339 F2FS_OPTION(sbi).unusable_cap_perc);
340}
341
342static void init_once(void *foo)
343{
344 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
345
346 inode_init_once(&fi->vfs_inode);
347}
348
349#ifdef CONFIG_QUOTA
350static const char * const quotatypes[] = INITQFNAMES;
351#define QTYPE2NAME(t) (quotatypes[t])
352static int f2fs_set_qf_name(struct super_block *sb, int qtype,
353 substring_t *args)
354{
355 struct f2fs_sb_info *sbi = F2FS_SB(sb);
356 char *qname;
357 int ret = -EINVAL;
358
359 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
360 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
361 return -EINVAL;
362 }
363 if (f2fs_sb_has_quota_ino(sbi)) {
364 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
365 return 0;
366 }
367
368 qname = match_strdup(args);
369 if (!qname) {
370 f2fs_err(sbi, "Not enough memory for storing quotafile name");
371 return -ENOMEM;
372 }
373 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
374 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
375 ret = 0;
376 else
377 f2fs_err(sbi, "%s quota file already specified",
378 QTYPE2NAME(qtype));
379 goto errout;
380 }
381 if (strchr(qname, '/')) {
382 f2fs_err(sbi, "quotafile must be on filesystem root");
383 goto errout;
384 }
385 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
386 set_opt(sbi, QUOTA);
387 return 0;
388errout:
389 kfree(qname);
390 return ret;
391}
392
393static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
394{
395 struct f2fs_sb_info *sbi = F2FS_SB(sb);
396
397 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
398 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
399 return -EINVAL;
400 }
401 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
402 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
403 return 0;
404}
405
406static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
407{
408
409
410
411
412
413 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
414 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
415 return -1;
416 }
417 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
418 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
419 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
420 if (test_opt(sbi, USRQUOTA) &&
421 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
422 clear_opt(sbi, USRQUOTA);
423
424 if (test_opt(sbi, GRPQUOTA) &&
425 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
426 clear_opt(sbi, GRPQUOTA);
427
428 if (test_opt(sbi, PRJQUOTA) &&
429 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
430 clear_opt(sbi, PRJQUOTA);
431
432 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
433 test_opt(sbi, PRJQUOTA)) {
434 f2fs_err(sbi, "old and new quota format mixing");
435 return -1;
436 }
437
438 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
439 f2fs_err(sbi, "journaled quota format not specified");
440 return -1;
441 }
442 }
443
444 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
445 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
446 F2FS_OPTION(sbi).s_jquota_fmt = 0;
447 }
448 return 0;
449}
450#endif
451
452static int f2fs_set_test_dummy_encryption(struct super_block *sb,
453 const char *opt,
454 const substring_t *arg,
455 bool is_remount)
456{
457 struct f2fs_sb_info *sbi = F2FS_SB(sb);
458#ifdef CONFIG_FS_ENCRYPTION
459 int err;
460
461 if (!f2fs_sb_has_encrypt(sbi)) {
462 f2fs_err(sbi, "Encrypt feature is off");
463 return -EINVAL;
464 }
465
466
467
468
469
470
471
472 if (is_remount && !F2FS_OPTION(sbi).dummy_enc_policy.policy) {
473 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
474 return -EINVAL;
475 }
476 err = fscrypt_set_test_dummy_encryption(
477 sb, arg->from, &F2FS_OPTION(sbi).dummy_enc_policy);
478 if (err) {
479 if (err == -EEXIST)
480 f2fs_warn(sbi,
481 "Can't change test_dummy_encryption on remount");
482 else if (err == -EINVAL)
483 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
484 opt);
485 else
486 f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
487 opt, err);
488 return -EINVAL;
489 }
490 f2fs_warn(sbi, "Test dummy encryption mode enabled");
491#else
492 f2fs_warn(sbi, "Test dummy encryption mount option ignored");
493#endif
494 return 0;
495}
496
497#ifdef CONFIG_F2FS_FS_COMPRESSION
498
499
500
501
502
503
504
505static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi)
506{
507 unsigned char (*ext)[F2FS_EXTENSION_LEN];
508 unsigned char (*noext)[F2FS_EXTENSION_LEN];
509 int ext_cnt, noext_cnt, index = 0, no_index = 0;
510
511 ext = F2FS_OPTION(sbi).extensions;
512 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
513 noext = F2FS_OPTION(sbi).noextensions;
514 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
515
516 if (!noext_cnt)
517 return 0;
518
519 for (no_index = 0; no_index < noext_cnt; no_index++) {
520 if (!strcasecmp("*", noext[no_index])) {
521 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files");
522 return -EINVAL;
523 }
524 for (index = 0; index < ext_cnt; index++) {
525 if (!strcasecmp(ext[index], noext[no_index])) {
526 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension",
527 ext[index]);
528 return -EINVAL;
529 }
530 }
531 }
532 return 0;
533}
534
535#ifdef CONFIG_F2FS_FS_LZ4
536static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
537{
538#ifdef CONFIG_F2FS_FS_LZ4HC
539 unsigned int level;
540#endif
541
542 if (strlen(str) == 3) {
543 F2FS_OPTION(sbi).compress_level = 0;
544 return 0;
545 }
546
547#ifdef CONFIG_F2FS_FS_LZ4HC
548 str += 3;
549
550 if (str[0] != ':') {
551 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
552 return -EINVAL;
553 }
554 if (kstrtouint(str + 1, 10, &level))
555 return -EINVAL;
556
557 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
558 f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
559 return -EINVAL;
560 }
561
562 F2FS_OPTION(sbi).compress_level = level;
563 return 0;
564#else
565 f2fs_info(sbi, "kernel doesn't support lz4hc compression");
566 return -EINVAL;
567#endif
568}
569#endif
570
571#ifdef CONFIG_F2FS_FS_ZSTD
572static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
573{
574 unsigned int level;
575 int len = 4;
576
577 if (strlen(str) == len) {
578 F2FS_OPTION(sbi).compress_level = 0;
579 return 0;
580 }
581
582 str += len;
583
584 if (str[0] != ':') {
585 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
586 return -EINVAL;
587 }
588 if (kstrtouint(str + 1, 10, &level))
589 return -EINVAL;
590
591 if (!level || level > ZSTD_maxCLevel()) {
592 f2fs_info(sbi, "invalid zstd compress level: %d", level);
593 return -EINVAL;
594 }
595
596 F2FS_OPTION(sbi).compress_level = level;
597 return 0;
598}
599#endif
600#endif
601
602static int parse_options(struct super_block *sb, char *options, bool is_remount)
603{
604 struct f2fs_sb_info *sbi = F2FS_SB(sb);
605 substring_t args[MAX_OPT_ARGS];
606#ifdef CONFIG_F2FS_FS_COMPRESSION
607 unsigned char (*ext)[F2FS_EXTENSION_LEN];
608 unsigned char (*noext)[F2FS_EXTENSION_LEN];
609 int ext_cnt, noext_cnt;
610#endif
611 char *p, *name;
612 int arg = 0;
613 kuid_t uid;
614 kgid_t gid;
615 int ret;
616
617 if (!options)
618 goto default_check;
619
620 while ((p = strsep(&options, ",")) != NULL) {
621 int token;
622
623 if (!*p)
624 continue;
625
626
627
628
629 args[0].to = args[0].from = NULL;
630 token = match_token(p, f2fs_tokens, args);
631
632 switch (token) {
633 case Opt_gc_background:
634 name = match_strdup(&args[0]);
635
636 if (!name)
637 return -ENOMEM;
638 if (!strcmp(name, "on")) {
639 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
640 } else if (!strcmp(name, "off")) {
641 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
642 } else if (!strcmp(name, "sync")) {
643 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
644 } else {
645 kfree(name);
646 return -EINVAL;
647 }
648 kfree(name);
649 break;
650 case Opt_disable_roll_forward:
651 set_opt(sbi, DISABLE_ROLL_FORWARD);
652 break;
653 case Opt_norecovery:
654
655 set_opt(sbi, NORECOVERY);
656 if (!f2fs_readonly(sb))
657 return -EINVAL;
658 break;
659 case Opt_discard:
660 set_opt(sbi, DISCARD);
661 break;
662 case Opt_nodiscard:
663 if (f2fs_sb_has_blkzoned(sbi)) {
664 f2fs_warn(sbi, "discard is required for zoned block devices");
665 return -EINVAL;
666 }
667 clear_opt(sbi, DISCARD);
668 break;
669 case Opt_noheap:
670 set_opt(sbi, NOHEAP);
671 break;
672 case Opt_heap:
673 clear_opt(sbi, NOHEAP);
674 break;
675#ifdef CONFIG_F2FS_FS_XATTR
676 case Opt_user_xattr:
677 set_opt(sbi, XATTR_USER);
678 break;
679 case Opt_nouser_xattr:
680 clear_opt(sbi, XATTR_USER);
681 break;
682 case Opt_inline_xattr:
683 set_opt(sbi, INLINE_XATTR);
684 break;
685 case Opt_noinline_xattr:
686 clear_opt(sbi, INLINE_XATTR);
687 break;
688 case Opt_inline_xattr_size:
689 if (args->from && match_int(args, &arg))
690 return -EINVAL;
691 set_opt(sbi, INLINE_XATTR_SIZE);
692 F2FS_OPTION(sbi).inline_xattr_size = arg;
693 break;
694#else
695 case Opt_user_xattr:
696 f2fs_info(sbi, "user_xattr options not supported");
697 break;
698 case Opt_nouser_xattr:
699 f2fs_info(sbi, "nouser_xattr options not supported");
700 break;
701 case Opt_inline_xattr:
702 f2fs_info(sbi, "inline_xattr options not supported");
703 break;
704 case Opt_noinline_xattr:
705 f2fs_info(sbi, "noinline_xattr options not supported");
706 break;
707#endif
708#ifdef CONFIG_F2FS_FS_POSIX_ACL
709 case Opt_acl:
710 set_opt(sbi, POSIX_ACL);
711 break;
712 case Opt_noacl:
713 clear_opt(sbi, POSIX_ACL);
714 break;
715#else
716 case Opt_acl:
717 f2fs_info(sbi, "acl options not supported");
718 break;
719 case Opt_noacl:
720 f2fs_info(sbi, "noacl options not supported");
721 break;
722#endif
723 case Opt_active_logs:
724 if (args->from && match_int(args, &arg))
725 return -EINVAL;
726 if (arg != 2 && arg != 4 &&
727 arg != NR_CURSEG_PERSIST_TYPE)
728 return -EINVAL;
729 F2FS_OPTION(sbi).active_logs = arg;
730 break;
731 case Opt_disable_ext_identify:
732 set_opt(sbi, DISABLE_EXT_IDENTIFY);
733 break;
734 case Opt_inline_data:
735 set_opt(sbi, INLINE_DATA);
736 break;
737 case Opt_inline_dentry:
738 set_opt(sbi, INLINE_DENTRY);
739 break;
740 case Opt_noinline_dentry:
741 clear_opt(sbi, INLINE_DENTRY);
742 break;
743 case Opt_flush_merge:
744 set_opt(sbi, FLUSH_MERGE);
745 break;
746 case Opt_noflush_merge:
747 clear_opt(sbi, FLUSH_MERGE);
748 break;
749 case Opt_nobarrier:
750 set_opt(sbi, NOBARRIER);
751 break;
752 case Opt_fastboot:
753 set_opt(sbi, FASTBOOT);
754 break;
755 case Opt_extent_cache:
756 set_opt(sbi, EXTENT_CACHE);
757 break;
758 case Opt_noextent_cache:
759 clear_opt(sbi, EXTENT_CACHE);
760 break;
761 case Opt_noinline_data:
762 clear_opt(sbi, INLINE_DATA);
763 break;
764 case Opt_data_flush:
765 set_opt(sbi, DATA_FLUSH);
766 break;
767 case Opt_reserve_root:
768 if (args->from && match_int(args, &arg))
769 return -EINVAL;
770 if (test_opt(sbi, RESERVE_ROOT)) {
771 f2fs_info(sbi, "Preserve previous reserve_root=%u",
772 F2FS_OPTION(sbi).root_reserved_blocks);
773 } else {
774 F2FS_OPTION(sbi).root_reserved_blocks = arg;
775 set_opt(sbi, RESERVE_ROOT);
776 }
777 break;
778 case Opt_resuid:
779 if (args->from && match_int(args, &arg))
780 return -EINVAL;
781 uid = make_kuid(current_user_ns(), arg);
782 if (!uid_valid(uid)) {
783 f2fs_err(sbi, "Invalid uid value %d", arg);
784 return -EINVAL;
785 }
786 F2FS_OPTION(sbi).s_resuid = uid;
787 break;
788 case Opt_resgid:
789 if (args->from && match_int(args, &arg))
790 return -EINVAL;
791 gid = make_kgid(current_user_ns(), arg);
792 if (!gid_valid(gid)) {
793 f2fs_err(sbi, "Invalid gid value %d", arg);
794 return -EINVAL;
795 }
796 F2FS_OPTION(sbi).s_resgid = gid;
797 break;
798 case Opt_mode:
799 name = match_strdup(&args[0]);
800
801 if (!name)
802 return -ENOMEM;
803 if (!strcmp(name, "adaptive")) {
804 if (f2fs_sb_has_blkzoned(sbi)) {
805 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
806 kfree(name);
807 return -EINVAL;
808 }
809 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
810 } else if (!strcmp(name, "lfs")) {
811 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
812 } else {
813 kfree(name);
814 return -EINVAL;
815 }
816 kfree(name);
817 break;
818 case Opt_io_size_bits:
819 if (args->from && match_int(args, &arg))
820 return -EINVAL;
821 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) {
822 f2fs_warn(sbi, "Not support %d, larger than %d",
823 1 << arg, BIO_MAX_VECS);
824 return -EINVAL;
825 }
826 F2FS_OPTION(sbi).write_io_size_bits = arg;
827 break;
828#ifdef CONFIG_F2FS_FAULT_INJECTION
829 case Opt_fault_injection:
830 if (args->from && match_int(args, &arg))
831 return -EINVAL;
832 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
833 set_opt(sbi, FAULT_INJECTION);
834 break;
835
836 case Opt_fault_type:
837 if (args->from && match_int(args, &arg))
838 return -EINVAL;
839 f2fs_build_fault_attr(sbi, 0, arg);
840 set_opt(sbi, FAULT_INJECTION);
841 break;
842#else
843 case Opt_fault_injection:
844 f2fs_info(sbi, "fault_injection options not supported");
845 break;
846
847 case Opt_fault_type:
848 f2fs_info(sbi, "fault_type options not supported");
849 break;
850#endif
851 case Opt_lazytime:
852 sb->s_flags |= SB_LAZYTIME;
853 break;
854 case Opt_nolazytime:
855 sb->s_flags &= ~SB_LAZYTIME;
856 break;
857#ifdef CONFIG_QUOTA
858 case Opt_quota:
859 case Opt_usrquota:
860 set_opt(sbi, USRQUOTA);
861 break;
862 case Opt_grpquota:
863 set_opt(sbi, GRPQUOTA);
864 break;
865 case Opt_prjquota:
866 set_opt(sbi, PRJQUOTA);
867 break;
868 case Opt_usrjquota:
869 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
870 if (ret)
871 return ret;
872 break;
873 case Opt_grpjquota:
874 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
875 if (ret)
876 return ret;
877 break;
878 case Opt_prjjquota:
879 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
880 if (ret)
881 return ret;
882 break;
883 case Opt_offusrjquota:
884 ret = f2fs_clear_qf_name(sb, USRQUOTA);
885 if (ret)
886 return ret;
887 break;
888 case Opt_offgrpjquota:
889 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
890 if (ret)
891 return ret;
892 break;
893 case Opt_offprjjquota:
894 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
895 if (ret)
896 return ret;
897 break;
898 case Opt_jqfmt_vfsold:
899 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
900 break;
901 case Opt_jqfmt_vfsv0:
902 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
903 break;
904 case Opt_jqfmt_vfsv1:
905 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
906 break;
907 case Opt_noquota:
908 clear_opt(sbi, QUOTA);
909 clear_opt(sbi, USRQUOTA);
910 clear_opt(sbi, GRPQUOTA);
911 clear_opt(sbi, PRJQUOTA);
912 break;
913#else
914 case Opt_quota:
915 case Opt_usrquota:
916 case Opt_grpquota:
917 case Opt_prjquota:
918 case Opt_usrjquota:
919 case Opt_grpjquota:
920 case Opt_prjjquota:
921 case Opt_offusrjquota:
922 case Opt_offgrpjquota:
923 case Opt_offprjjquota:
924 case Opt_jqfmt_vfsold:
925 case Opt_jqfmt_vfsv0:
926 case Opt_jqfmt_vfsv1:
927 case Opt_noquota:
928 f2fs_info(sbi, "quota operations not supported");
929 break;
930#endif
931 case Opt_whint:
932 name = match_strdup(&args[0]);
933 if (!name)
934 return -ENOMEM;
935 if (!strcmp(name, "user-based")) {
936 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
937 } else if (!strcmp(name, "off")) {
938 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
939 } else if (!strcmp(name, "fs-based")) {
940 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
941 } else {
942 kfree(name);
943 return -EINVAL;
944 }
945 kfree(name);
946 break;
947 case Opt_alloc:
948 name = match_strdup(&args[0]);
949 if (!name)
950 return -ENOMEM;
951
952 if (!strcmp(name, "default")) {
953 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
954 } else if (!strcmp(name, "reuse")) {
955 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
956 } else {
957 kfree(name);
958 return -EINVAL;
959 }
960 kfree(name);
961 break;
962 case Opt_fsync:
963 name = match_strdup(&args[0]);
964 if (!name)
965 return -ENOMEM;
966 if (!strcmp(name, "posix")) {
967 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
968 } else if (!strcmp(name, "strict")) {
969 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
970 } else if (!strcmp(name, "nobarrier")) {
971 F2FS_OPTION(sbi).fsync_mode =
972 FSYNC_MODE_NOBARRIER;
973 } else {
974 kfree(name);
975 return -EINVAL;
976 }
977 kfree(name);
978 break;
979 case Opt_test_dummy_encryption:
980 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
981 is_remount);
982 if (ret)
983 return ret;
984 break;
985 case Opt_inlinecrypt:
986#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
987 sb->s_flags |= SB_INLINECRYPT;
988#else
989 f2fs_info(sbi, "inline encryption not supported");
990#endif
991 break;
992 case Opt_checkpoint_disable_cap_perc:
993 if (args->from && match_int(args, &arg))
994 return -EINVAL;
995 if (arg < 0 || arg > 100)
996 return -EINVAL;
997 F2FS_OPTION(sbi).unusable_cap_perc = arg;
998 set_opt(sbi, DISABLE_CHECKPOINT);
999 break;
1000 case Opt_checkpoint_disable_cap:
1001 if (args->from && match_int(args, &arg))
1002 return -EINVAL;
1003 F2FS_OPTION(sbi).unusable_cap = arg;
1004 set_opt(sbi, DISABLE_CHECKPOINT);
1005 break;
1006 case Opt_checkpoint_disable:
1007 set_opt(sbi, DISABLE_CHECKPOINT);
1008 break;
1009 case Opt_checkpoint_enable:
1010 clear_opt(sbi, DISABLE_CHECKPOINT);
1011 break;
1012 case Opt_checkpoint_merge:
1013 set_opt(sbi, MERGE_CHECKPOINT);
1014 break;
1015 case Opt_nocheckpoint_merge:
1016 clear_opt(sbi, MERGE_CHECKPOINT);
1017 break;
1018#ifdef CONFIG_F2FS_FS_COMPRESSION
1019 case Opt_compress_algorithm:
1020 if (!f2fs_sb_has_compression(sbi)) {
1021 f2fs_info(sbi, "Image doesn't support compression");
1022 break;
1023 }
1024 name = match_strdup(&args[0]);
1025 if (!name)
1026 return -ENOMEM;
1027 if (!strcmp(name, "lzo")) {
1028#ifdef CONFIG_F2FS_FS_LZO
1029 F2FS_OPTION(sbi).compress_level = 0;
1030 F2FS_OPTION(sbi).compress_algorithm =
1031 COMPRESS_LZO;
1032#else
1033 f2fs_info(sbi, "kernel doesn't support lzo compression");
1034#endif
1035 } else if (!strncmp(name, "lz4", 3)) {
1036#ifdef CONFIG_F2FS_FS_LZ4
1037 ret = f2fs_set_lz4hc_level(sbi, name);
1038 if (ret) {
1039 kfree(name);
1040 return -EINVAL;
1041 }
1042 F2FS_OPTION(sbi).compress_algorithm =
1043 COMPRESS_LZ4;
1044#else
1045 f2fs_info(sbi, "kernel doesn't support lz4 compression");
1046#endif
1047 } else if (!strncmp(name, "zstd", 4)) {
1048#ifdef CONFIG_F2FS_FS_ZSTD
1049 ret = f2fs_set_zstd_level(sbi, name);
1050 if (ret) {
1051 kfree(name);
1052 return -EINVAL;
1053 }
1054 F2FS_OPTION(sbi).compress_algorithm =
1055 COMPRESS_ZSTD;
1056#else
1057 f2fs_info(sbi, "kernel doesn't support zstd compression");
1058#endif
1059 } else if (!strcmp(name, "lzo-rle")) {
1060#ifdef CONFIG_F2FS_FS_LZORLE
1061 F2FS_OPTION(sbi).compress_level = 0;
1062 F2FS_OPTION(sbi).compress_algorithm =
1063 COMPRESS_LZORLE;
1064#else
1065 f2fs_info(sbi, "kernel doesn't support lzorle compression");
1066#endif
1067 } else {
1068 kfree(name);
1069 return -EINVAL;
1070 }
1071 kfree(name);
1072 break;
1073 case Opt_compress_log_size:
1074 if (!f2fs_sb_has_compression(sbi)) {
1075 f2fs_info(sbi, "Image doesn't support compression");
1076 break;
1077 }
1078 if (args->from && match_int(args, &arg))
1079 return -EINVAL;
1080 if (arg < MIN_COMPRESS_LOG_SIZE ||
1081 arg > MAX_COMPRESS_LOG_SIZE) {
1082 f2fs_err(sbi,
1083 "Compress cluster log size is out of range");
1084 return -EINVAL;
1085 }
1086 F2FS_OPTION(sbi).compress_log_size = arg;
1087 break;
1088 case Opt_compress_extension:
1089 if (!f2fs_sb_has_compression(sbi)) {
1090 f2fs_info(sbi, "Image doesn't support compression");
1091 break;
1092 }
1093 name = match_strdup(&args[0]);
1094 if (!name)
1095 return -ENOMEM;
1096
1097 ext = F2FS_OPTION(sbi).extensions;
1098 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
1099
1100 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1101 ext_cnt >= COMPRESS_EXT_NUM) {
1102 f2fs_err(sbi,
1103 "invalid extension length/number");
1104 kfree(name);
1105 return -EINVAL;
1106 }
1107
1108 strcpy(ext[ext_cnt], name);
1109 F2FS_OPTION(sbi).compress_ext_cnt++;
1110 kfree(name);
1111 break;
1112 case Opt_nocompress_extension:
1113 if (!f2fs_sb_has_compression(sbi)) {
1114 f2fs_info(sbi, "Image doesn't support compression");
1115 break;
1116 }
1117 name = match_strdup(&args[0]);
1118 if (!name)
1119 return -ENOMEM;
1120
1121 noext = F2FS_OPTION(sbi).noextensions;
1122 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
1123
1124 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1125 noext_cnt >= COMPRESS_EXT_NUM) {
1126 f2fs_err(sbi,
1127 "invalid extension length/number");
1128 kfree(name);
1129 return -EINVAL;
1130 }
1131
1132 strcpy(noext[noext_cnt], name);
1133 F2FS_OPTION(sbi).nocompress_ext_cnt++;
1134 kfree(name);
1135 break;
1136 case Opt_compress_chksum:
1137 F2FS_OPTION(sbi).compress_chksum = true;
1138 break;
1139 case Opt_compress_mode:
1140 name = match_strdup(&args[0]);
1141 if (!name)
1142 return -ENOMEM;
1143 if (!strcmp(name, "fs")) {
1144 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1145 } else if (!strcmp(name, "user")) {
1146 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER;
1147 } else {
1148 kfree(name);
1149 return -EINVAL;
1150 }
1151 kfree(name);
1152 break;
1153 case Opt_compress_cache:
1154 set_opt(sbi, COMPRESS_CACHE);
1155 break;
1156#else
1157 case Opt_compress_algorithm:
1158 case Opt_compress_log_size:
1159 case Opt_compress_extension:
1160 case Opt_nocompress_extension:
1161 case Opt_compress_chksum:
1162 case Opt_compress_mode:
1163 case Opt_compress_cache:
1164 f2fs_info(sbi, "compression options not supported");
1165 break;
1166#endif
1167 case Opt_atgc:
1168 set_opt(sbi, ATGC);
1169 break;
1170 case Opt_gc_merge:
1171 set_opt(sbi, GC_MERGE);
1172 break;
1173 case Opt_nogc_merge:
1174 clear_opt(sbi, GC_MERGE);
1175 break;
1176 default:
1177 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
1178 p);
1179 return -EINVAL;
1180 }
1181 }
1182default_check:
1183#ifdef CONFIG_QUOTA
1184 if (f2fs_check_quota_options(sbi))
1185 return -EINVAL;
1186#else
1187 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
1188 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1189 return -EINVAL;
1190 }
1191 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
1192 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1193 return -EINVAL;
1194 }
1195#endif
1196#ifndef CONFIG_UNICODE
1197 if (f2fs_sb_has_casefold(sbi)) {
1198 f2fs_err(sbi,
1199 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
1200 return -EINVAL;
1201 }
1202#endif
1203
1204
1205
1206
1207
1208#ifndef CONFIG_BLK_DEV_ZONED
1209 if (f2fs_sb_has_blkzoned(sbi)) {
1210 f2fs_err(sbi, "Zoned block device support is not enabled");
1211 return -EINVAL;
1212 }
1213#endif
1214
1215#ifdef CONFIG_F2FS_FS_COMPRESSION
1216 if (f2fs_test_compress_extension(sbi)) {
1217 f2fs_err(sbi, "invalid compress or nocompress extension");
1218 return -EINVAL;
1219 }
1220#endif
1221
1222 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
1223 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
1224 F2FS_IO_SIZE_KB(sbi));
1225 return -EINVAL;
1226 }
1227
1228 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
1229 int min_size, max_size;
1230
1231 if (!f2fs_sb_has_extra_attr(sbi) ||
1232 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
1233 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
1234 return -EINVAL;
1235 }
1236 if (!test_opt(sbi, INLINE_XATTR)) {
1237 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
1238 return -EINVAL;
1239 }
1240
1241 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
1242 max_size = MAX_INLINE_XATTR_SIZE;
1243
1244 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
1245 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
1246 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
1247 min_size, max_size);
1248 return -EINVAL;
1249 }
1250 }
1251
1252 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
1253 f2fs_err(sbi, "LFS not compatible with checkpoint=disable");
1254 return -EINVAL;
1255 }
1256
1257
1258
1259
1260 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
1261 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1262
1263 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
1264 f2fs_err(sbi, "Allow to mount readonly mode only");
1265 return -EROFS;
1266 }
1267 return 0;
1268}
1269
1270static struct inode *f2fs_alloc_inode(struct super_block *sb)
1271{
1272 struct f2fs_inode_info *fi;
1273
1274 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
1275 if (!fi)
1276 return NULL;
1277
1278 init_once((void *) fi);
1279
1280
1281 atomic_set(&fi->dirty_pages, 0);
1282 atomic_set(&fi->i_compr_blocks, 0);
1283 init_rwsem(&fi->i_sem);
1284 spin_lock_init(&fi->i_size_lock);
1285 INIT_LIST_HEAD(&fi->dirty_list);
1286 INIT_LIST_HEAD(&fi->gdirty_list);
1287 INIT_LIST_HEAD(&fi->inmem_ilist);
1288 INIT_LIST_HEAD(&fi->inmem_pages);
1289 mutex_init(&fi->inmem_lock);
1290 init_rwsem(&fi->i_gc_rwsem[READ]);
1291 init_rwsem(&fi->i_gc_rwsem[WRITE]);
1292 init_rwsem(&fi->i_mmap_sem);
1293 init_rwsem(&fi->i_xattr_sem);
1294
1295
1296 fi->i_dir_level = F2FS_SB(sb)->dir_level;
1297
1298 return &fi->vfs_inode;
1299}
1300
1301static int f2fs_drop_inode(struct inode *inode)
1302{
1303 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1304 int ret;
1305
1306
1307
1308
1309
1310 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1311 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1312 inode->i_ino == F2FS_META_INO(sbi)) {
1313 trace_f2fs_drop_inode(inode, 1);
1314 return 1;
1315 }
1316 }
1317
1318
1319
1320
1321
1322
1323
1324
1325 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
1326 if (!inode->i_nlink && !is_bad_inode(inode)) {
1327
1328 atomic_inc(&inode->i_count);
1329 spin_unlock(&inode->i_lock);
1330
1331
1332 if (f2fs_is_atomic_file(inode))
1333 f2fs_drop_inmem_pages(inode);
1334
1335
1336 f2fs_destroy_extent_node(inode);
1337
1338 sb_start_intwrite(inode->i_sb);
1339 f2fs_i_size_write(inode, 0);
1340
1341 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1342 inode, NULL, 0, DATA);
1343 truncate_inode_pages_final(inode->i_mapping);
1344
1345 if (F2FS_HAS_BLOCKS(inode))
1346 f2fs_truncate(inode);
1347
1348 sb_end_intwrite(inode->i_sb);
1349
1350 spin_lock(&inode->i_lock);
1351 atomic_dec(&inode->i_count);
1352 }
1353 trace_f2fs_drop_inode(inode, 0);
1354 return 0;
1355 }
1356 ret = generic_drop_inode(inode);
1357 if (!ret)
1358 ret = fscrypt_drop_inode(inode);
1359 trace_f2fs_drop_inode(inode, ret);
1360 return ret;
1361}
1362
1363int f2fs_inode_dirtied(struct inode *inode, bool sync)
1364{
1365 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1366 int ret = 0;
1367
1368 spin_lock(&sbi->inode_lock[DIRTY_META]);
1369 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1370 ret = 1;
1371 } else {
1372 set_inode_flag(inode, FI_DIRTY_INODE);
1373 stat_inc_dirty_inode(sbi, DIRTY_META);
1374 }
1375 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1376 list_add_tail(&F2FS_I(inode)->gdirty_list,
1377 &sbi->inode_list[DIRTY_META]);
1378 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1379 }
1380 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1381 return ret;
1382}
1383
1384void f2fs_inode_synced(struct inode *inode)
1385{
1386 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1387
1388 spin_lock(&sbi->inode_lock[DIRTY_META]);
1389 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1390 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1391 return;
1392 }
1393 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1394 list_del_init(&F2FS_I(inode)->gdirty_list);
1395 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1396 }
1397 clear_inode_flag(inode, FI_DIRTY_INODE);
1398 clear_inode_flag(inode, FI_AUTO_RECOVER);
1399 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
1400 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1401}
1402
1403
1404
1405
1406
1407
1408static void f2fs_dirty_inode(struct inode *inode, int flags)
1409{
1410 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1411
1412 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1413 inode->i_ino == F2FS_META_INO(sbi))
1414 return;
1415
1416 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1417 clear_inode_flag(inode, FI_AUTO_RECOVER);
1418
1419 f2fs_inode_dirtied(inode, false);
1420}
1421
1422static void f2fs_free_inode(struct inode *inode)
1423{
1424 fscrypt_free_inode(inode);
1425 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1426}
1427
1428static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1429{
1430 percpu_counter_destroy(&sbi->alloc_valid_block_count);
1431 percpu_counter_destroy(&sbi->total_valid_inode_count);
1432}
1433
1434static void destroy_device_list(struct f2fs_sb_info *sbi)
1435{
1436 int i;
1437
1438 for (i = 0; i < sbi->s_ndevs; i++) {
1439 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1440#ifdef CONFIG_BLK_DEV_ZONED
1441 kvfree(FDEV(i).blkz_seq);
1442 kfree(FDEV(i).zone_capacity_blocks);
1443#endif
1444 }
1445 kvfree(sbi->devs);
1446}
1447
1448static void f2fs_put_super(struct super_block *sb)
1449{
1450 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1451 int i;
1452 bool dropped;
1453
1454
1455 f2fs_unregister_sysfs(sbi);
1456
1457 f2fs_quota_off_umount(sb);
1458
1459
1460 mutex_lock(&sbi->umount_mutex);
1461
1462
1463
1464
1465
1466 f2fs_stop_ckpt_thread(sbi);
1467
1468
1469
1470
1471
1472
1473 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1474 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
1475 struct cp_control cpc = {
1476 .reason = CP_UMOUNT,
1477 };
1478 f2fs_write_checkpoint(sbi, &cpc);
1479 }
1480
1481
1482 dropped = f2fs_issue_discard_timeout(sbi);
1483
1484 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1485 !sbi->discard_blks && !dropped) {
1486 struct cp_control cpc = {
1487 .reason = CP_UMOUNT | CP_TRIMMED,
1488 };
1489 f2fs_write_checkpoint(sbi, &cpc);
1490 }
1491
1492
1493
1494
1495
1496 f2fs_release_ino_entry(sbi, true);
1497
1498 f2fs_leave_shrinker(sbi);
1499 mutex_unlock(&sbi->umount_mutex);
1500
1501
1502 f2fs_flush_merged_writes(sbi);
1503
1504 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1505
1506 f2fs_bug_on(sbi, sbi->fsync_node_num);
1507
1508 f2fs_destroy_compress_inode(sbi);
1509
1510 iput(sbi->node_inode);
1511 sbi->node_inode = NULL;
1512
1513 iput(sbi->meta_inode);
1514 sbi->meta_inode = NULL;
1515
1516
1517
1518
1519
1520 f2fs_destroy_stats(sbi);
1521
1522
1523 f2fs_destroy_node_manager(sbi);
1524 f2fs_destroy_segment_manager(sbi);
1525
1526 f2fs_destroy_post_read_wq(sbi);
1527
1528 kvfree(sbi->ckpt);
1529
1530 sb->s_fs_info = NULL;
1531 if (sbi->s_chksum_driver)
1532 crypto_free_shash(sbi->s_chksum_driver);
1533 kfree(sbi->raw_super);
1534
1535 destroy_device_list(sbi);
1536 f2fs_destroy_page_array_cache(sbi);
1537 f2fs_destroy_xattr_caches(sbi);
1538 mempool_destroy(sbi->write_io_dummy);
1539#ifdef CONFIG_QUOTA
1540 for (i = 0; i < MAXQUOTAS; i++)
1541 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
1542#endif
1543 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
1544 destroy_percpu_info(sbi);
1545 for (i = 0; i < NR_PAGE_TYPE; i++)
1546 kvfree(sbi->write_io[i]);
1547#ifdef CONFIG_UNICODE
1548 utf8_unload(sb->s_encoding);
1549#endif
1550 kfree(sbi);
1551}
1552
1553int f2fs_sync_fs(struct super_block *sb, int sync)
1554{
1555 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1556 int err = 0;
1557
1558 if (unlikely(f2fs_cp_error(sbi)))
1559 return 0;
1560 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1561 return 0;
1562
1563 trace_f2fs_sync_fs(sb, sync);
1564
1565 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1566 return -EAGAIN;
1567
1568 if (sync)
1569 err = f2fs_issue_checkpoint(sbi);
1570
1571 return err;
1572}
1573
1574static int f2fs_freeze(struct super_block *sb)
1575{
1576 if (f2fs_readonly(sb))
1577 return 0;
1578
1579
1580 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1581 return -EIO;
1582
1583
1584 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1585 return -EINVAL;
1586
1587
1588 if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list))
1589 return -EINVAL;
1590 return 0;
1591}
1592
1593static int f2fs_unfreeze(struct super_block *sb)
1594{
1595 return 0;
1596}
1597
1598#ifdef CONFIG_QUOTA
1599static int f2fs_statfs_project(struct super_block *sb,
1600 kprojid_t projid, struct kstatfs *buf)
1601{
1602 struct kqid qid;
1603 struct dquot *dquot;
1604 u64 limit;
1605 u64 curblock;
1606
1607 qid = make_kqid_projid(projid);
1608 dquot = dqget(sb, qid);
1609 if (IS_ERR(dquot))
1610 return PTR_ERR(dquot);
1611 spin_lock(&dquot->dq_dqb_lock);
1612
1613 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1614 dquot->dq_dqb.dqb_bhardlimit);
1615 if (limit)
1616 limit >>= sb->s_blocksize_bits;
1617
1618 if (limit && buf->f_blocks > limit) {
1619 curblock = (dquot->dq_dqb.dqb_curspace +
1620 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
1621 buf->f_blocks = limit;
1622 buf->f_bfree = buf->f_bavail =
1623 (buf->f_blocks > curblock) ?
1624 (buf->f_blocks - curblock) : 0;
1625 }
1626
1627 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1628 dquot->dq_dqb.dqb_ihardlimit);
1629
1630 if (limit && buf->f_files > limit) {
1631 buf->f_files = limit;
1632 buf->f_ffree =
1633 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1634 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1635 }
1636
1637 spin_unlock(&dquot->dq_dqb_lock);
1638 dqput(dquot);
1639 return 0;
1640}
1641#endif
1642
1643static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1644{
1645 struct super_block *sb = dentry->d_sb;
1646 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1647 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1648 block_t total_count, user_block_count, start_count;
1649 u64 avail_node_count;
1650
1651 total_count = le64_to_cpu(sbi->raw_super->block_count);
1652 user_block_count = sbi->user_block_count;
1653 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
1654 buf->f_type = F2FS_SUPER_MAGIC;
1655 buf->f_bsize = sbi->blocksize;
1656
1657 buf->f_blocks = total_count - start_count;
1658 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
1659 sbi->current_reserved_blocks;
1660
1661 spin_lock(&sbi->stat_lock);
1662 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1663 buf->f_bfree = 0;
1664 else
1665 buf->f_bfree -= sbi->unusable_block_count;
1666 spin_unlock(&sbi->stat_lock);
1667
1668 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1669 buf->f_bavail = buf->f_bfree -
1670 F2FS_OPTION(sbi).root_reserved_blocks;
1671 else
1672 buf->f_bavail = 0;
1673
1674 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
1675
1676 if (avail_node_count > user_block_count) {
1677 buf->f_files = user_block_count;
1678 buf->f_ffree = buf->f_bavail;
1679 } else {
1680 buf->f_files = avail_node_count;
1681 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1682 buf->f_bavail);
1683 }
1684
1685 buf->f_namelen = F2FS_NAME_LEN;
1686 buf->f_fsid = u64_to_fsid(id);
1687
1688#ifdef CONFIG_QUOTA
1689 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1690 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1691 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1692 }
1693#endif
1694 return 0;
1695}
1696
1697static inline void f2fs_show_quota_options(struct seq_file *seq,
1698 struct super_block *sb)
1699{
1700#ifdef CONFIG_QUOTA
1701 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1702
1703 if (F2FS_OPTION(sbi).s_jquota_fmt) {
1704 char *fmtname = "";
1705
1706 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
1707 case QFMT_VFS_OLD:
1708 fmtname = "vfsold";
1709 break;
1710 case QFMT_VFS_V0:
1711 fmtname = "vfsv0";
1712 break;
1713 case QFMT_VFS_V1:
1714 fmtname = "vfsv1";
1715 break;
1716 }
1717 seq_printf(seq, ",jqfmt=%s", fmtname);
1718 }
1719
1720 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1721 seq_show_option(seq, "usrjquota",
1722 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
1723
1724 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1725 seq_show_option(seq, "grpjquota",
1726 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
1727
1728 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1729 seq_show_option(seq, "prjjquota",
1730 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
1731#endif
1732}
1733
1734#ifdef CONFIG_F2FS_FS_COMPRESSION
1735static inline void f2fs_show_compress_options(struct seq_file *seq,
1736 struct super_block *sb)
1737{
1738 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1739 char *algtype = "";
1740 int i;
1741
1742 if (!f2fs_sb_has_compression(sbi))
1743 return;
1744
1745 switch (F2FS_OPTION(sbi).compress_algorithm) {
1746 case COMPRESS_LZO:
1747 algtype = "lzo";
1748 break;
1749 case COMPRESS_LZ4:
1750 algtype = "lz4";
1751 break;
1752 case COMPRESS_ZSTD:
1753 algtype = "zstd";
1754 break;
1755 case COMPRESS_LZORLE:
1756 algtype = "lzo-rle";
1757 break;
1758 }
1759 seq_printf(seq, ",compress_algorithm=%s", algtype);
1760
1761 if (F2FS_OPTION(sbi).compress_level)
1762 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level);
1763
1764 seq_printf(seq, ",compress_log_size=%u",
1765 F2FS_OPTION(sbi).compress_log_size);
1766
1767 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1768 seq_printf(seq, ",compress_extension=%s",
1769 F2FS_OPTION(sbi).extensions[i]);
1770 }
1771
1772 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) {
1773 seq_printf(seq, ",nocompress_extension=%s",
1774 F2FS_OPTION(sbi).noextensions[i]);
1775 }
1776
1777 if (F2FS_OPTION(sbi).compress_chksum)
1778 seq_puts(seq, ",compress_chksum");
1779
1780 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS)
1781 seq_printf(seq, ",compress_mode=%s", "fs");
1782 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER)
1783 seq_printf(seq, ",compress_mode=%s", "user");
1784
1785 if (test_opt(sbi, COMPRESS_CACHE))
1786 seq_puts(seq, ",compress_cache");
1787}
1788#endif
1789
1790static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1791{
1792 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1793
1794 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1795 seq_printf(seq, ",background_gc=%s", "sync");
1796 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1797 seq_printf(seq, ",background_gc=%s", "on");
1798 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
1799 seq_printf(seq, ",background_gc=%s", "off");
1800
1801 if (test_opt(sbi, GC_MERGE))
1802 seq_puts(seq, ",gc_merge");
1803
1804 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1805 seq_puts(seq, ",disable_roll_forward");
1806 if (test_opt(sbi, NORECOVERY))
1807 seq_puts(seq, ",norecovery");
1808 if (test_opt(sbi, DISCARD))
1809 seq_puts(seq, ",discard");
1810 else
1811 seq_puts(seq, ",nodiscard");
1812 if (test_opt(sbi, NOHEAP))
1813 seq_puts(seq, ",no_heap");
1814 else
1815 seq_puts(seq, ",heap");
1816#ifdef CONFIG_F2FS_FS_XATTR
1817 if (test_opt(sbi, XATTR_USER))
1818 seq_puts(seq, ",user_xattr");
1819 else
1820 seq_puts(seq, ",nouser_xattr");
1821 if (test_opt(sbi, INLINE_XATTR))
1822 seq_puts(seq, ",inline_xattr");
1823 else
1824 seq_puts(seq, ",noinline_xattr");
1825 if (test_opt(sbi, INLINE_XATTR_SIZE))
1826 seq_printf(seq, ",inline_xattr_size=%u",
1827 F2FS_OPTION(sbi).inline_xattr_size);
1828#endif
1829#ifdef CONFIG_F2FS_FS_POSIX_ACL
1830 if (test_opt(sbi, POSIX_ACL))
1831 seq_puts(seq, ",acl");
1832 else
1833 seq_puts(seq, ",noacl");
1834#endif
1835 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
1836 seq_puts(seq, ",disable_ext_identify");
1837 if (test_opt(sbi, INLINE_DATA))
1838 seq_puts(seq, ",inline_data");
1839 else
1840 seq_puts(seq, ",noinline_data");
1841 if (test_opt(sbi, INLINE_DENTRY))
1842 seq_puts(seq, ",inline_dentry");
1843 else
1844 seq_puts(seq, ",noinline_dentry");
1845 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
1846 seq_puts(seq, ",flush_merge");
1847 if (test_opt(sbi, NOBARRIER))
1848 seq_puts(seq, ",nobarrier");
1849 if (test_opt(sbi, FASTBOOT))
1850 seq_puts(seq, ",fastboot");
1851 if (test_opt(sbi, EXTENT_CACHE))
1852 seq_puts(seq, ",extent_cache");
1853 else
1854 seq_puts(seq, ",noextent_cache");
1855 if (test_opt(sbi, DATA_FLUSH))
1856 seq_puts(seq, ",data_flush");
1857
1858 seq_puts(seq, ",mode=");
1859 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
1860 seq_puts(seq, "adaptive");
1861 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
1862 seq_puts(seq, "lfs");
1863 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
1864 if (test_opt(sbi, RESERVE_ROOT))
1865 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
1866 F2FS_OPTION(sbi).root_reserved_blocks,
1867 from_kuid_munged(&init_user_ns,
1868 F2FS_OPTION(sbi).s_resuid),
1869 from_kgid_munged(&init_user_ns,
1870 F2FS_OPTION(sbi).s_resgid));
1871 if (F2FS_IO_SIZE_BITS(sbi))
1872 seq_printf(seq, ",io_bits=%u",
1873 F2FS_OPTION(sbi).write_io_size_bits);
1874#ifdef CONFIG_F2FS_FAULT_INJECTION
1875 if (test_opt(sbi, FAULT_INJECTION)) {
1876 seq_printf(seq, ",fault_injection=%u",
1877 F2FS_OPTION(sbi).fault_info.inject_rate);
1878 seq_printf(seq, ",fault_type=%u",
1879 F2FS_OPTION(sbi).fault_info.inject_type);
1880 }
1881#endif
1882#ifdef CONFIG_QUOTA
1883 if (test_opt(sbi, QUOTA))
1884 seq_puts(seq, ",quota");
1885 if (test_opt(sbi, USRQUOTA))
1886 seq_puts(seq, ",usrquota");
1887 if (test_opt(sbi, GRPQUOTA))
1888 seq_puts(seq, ",grpquota");
1889 if (test_opt(sbi, PRJQUOTA))
1890 seq_puts(seq, ",prjquota");
1891#endif
1892 f2fs_show_quota_options(seq, sbi->sb);
1893 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
1894 seq_printf(seq, ",whint_mode=%s", "user-based");
1895 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
1896 seq_printf(seq, ",whint_mode=%s", "fs-based");
1897
1898 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
1899
1900 if (sbi->sb->s_flags & SB_INLINECRYPT)
1901 seq_puts(seq, ",inlinecrypt");
1902
1903 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
1904 seq_printf(seq, ",alloc_mode=%s", "default");
1905 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
1906 seq_printf(seq, ",alloc_mode=%s", "reuse");
1907
1908 if (test_opt(sbi, DISABLE_CHECKPOINT))
1909 seq_printf(seq, ",checkpoint=disable:%u",
1910 F2FS_OPTION(sbi).unusable_cap);
1911 if (test_opt(sbi, MERGE_CHECKPOINT))
1912 seq_puts(seq, ",checkpoint_merge");
1913 else
1914 seq_puts(seq, ",nocheckpoint_merge");
1915 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
1916 seq_printf(seq, ",fsync_mode=%s", "posix");
1917 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
1918 seq_printf(seq, ",fsync_mode=%s", "strict");
1919 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1920 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
1921
1922#ifdef CONFIG_F2FS_FS_COMPRESSION
1923 f2fs_show_compress_options(seq, sbi->sb);
1924#endif
1925
1926 if (test_opt(sbi, ATGC))
1927 seq_puts(seq, ",atgc");
1928 return 0;
1929}
1930
1931static void default_options(struct f2fs_sb_info *sbi)
1932{
1933
1934 if (f2fs_sb_has_readonly(sbi))
1935 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE;
1936 else
1937 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
1938
1939 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1940 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1941 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1942 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
1943 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1944 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
1945 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
1946 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
1947 F2FS_OPTION(sbi).compress_ext_cnt = 0;
1948 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1949 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
1950
1951 sbi->sb->s_flags &= ~SB_INLINECRYPT;
1952
1953 set_opt(sbi, INLINE_XATTR);
1954 set_opt(sbi, INLINE_DATA);
1955 set_opt(sbi, INLINE_DENTRY);
1956 set_opt(sbi, EXTENT_CACHE);
1957 set_opt(sbi, NOHEAP);
1958 clear_opt(sbi, DISABLE_CHECKPOINT);
1959 set_opt(sbi, MERGE_CHECKPOINT);
1960 F2FS_OPTION(sbi).unusable_cap = 0;
1961 sbi->sb->s_flags |= SB_LAZYTIME;
1962 set_opt(sbi, FLUSH_MERGE);
1963 set_opt(sbi, DISCARD);
1964 if (f2fs_sb_has_blkzoned(sbi))
1965 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
1966 else
1967 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
1968
1969#ifdef CONFIG_F2FS_FS_XATTR
1970 set_opt(sbi, XATTR_USER);
1971#endif
1972#ifdef CONFIG_F2FS_FS_POSIX_ACL
1973 set_opt(sbi, POSIX_ACL);
1974#endif
1975
1976 f2fs_build_fault_attr(sbi, 0, 0);
1977}
1978
1979#ifdef CONFIG_QUOTA
1980static int f2fs_enable_quotas(struct super_block *sb);
1981#endif
1982
1983static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1984{
1985 unsigned int s_flags = sbi->sb->s_flags;
1986 struct cp_control cpc;
1987 int err = 0;
1988 int ret;
1989 block_t unusable;
1990
1991 if (s_flags & SB_RDONLY) {
1992 f2fs_err(sbi, "checkpoint=disable on readonly fs");
1993 return -EINVAL;
1994 }
1995 sbi->sb->s_flags |= SB_ACTIVE;
1996
1997 f2fs_update_time(sbi, DISABLE_TIME);
1998
1999 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
2000 down_write(&sbi->gc_lock);
2001 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
2002 if (err == -ENODATA) {
2003 err = 0;
2004 break;
2005 }
2006 if (err && err != -EAGAIN)
2007 break;
2008 }
2009
2010 ret = sync_filesystem(sbi->sb);
2011 if (ret || err) {
2012 err = ret ? ret : err;
2013 goto restore_flag;
2014 }
2015
2016 unusable = f2fs_get_unusable_blocks(sbi);
2017 if (f2fs_disable_cp_again(sbi, unusable)) {
2018 err = -EAGAIN;
2019 goto restore_flag;
2020 }
2021
2022 down_write(&sbi->gc_lock);
2023 cpc.reason = CP_PAUSE;
2024 set_sbi_flag(sbi, SBI_CP_DISABLED);
2025 err = f2fs_write_checkpoint(sbi, &cpc);
2026 if (err)
2027 goto out_unlock;
2028
2029 spin_lock(&sbi->stat_lock);
2030 sbi->unusable_block_count = unusable;
2031 spin_unlock(&sbi->stat_lock);
2032
2033out_unlock:
2034 up_write(&sbi->gc_lock);
2035restore_flag:
2036 sbi->sb->s_flags = s_flags;
2037 return err;
2038}
2039
2040static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
2041{
2042
2043 sync_inodes_sb(sbi->sb);
2044
2045 down_write(&sbi->gc_lock);
2046 f2fs_dirty_to_prefree(sbi);
2047
2048 clear_sbi_flag(sbi, SBI_CP_DISABLED);
2049 set_sbi_flag(sbi, SBI_IS_DIRTY);
2050 up_write(&sbi->gc_lock);
2051
2052 f2fs_sync_fs(sbi->sb, 1);
2053}
2054
2055static int f2fs_remount(struct super_block *sb, int *flags, char *data)
2056{
2057 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2058 struct f2fs_mount_info org_mount_opt;
2059 unsigned long old_sb_flags;
2060 int err;
2061 bool need_restart_gc = false, need_stop_gc = false;
2062 bool need_restart_ckpt = false, need_stop_ckpt = false;
2063 bool need_restart_flush = false, need_stop_flush = false;
2064 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
2065 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
2066 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
2067 bool no_atgc = !test_opt(sbi, ATGC);
2068 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE);
2069 bool checkpoint_changed;
2070#ifdef CONFIG_QUOTA
2071 int i, j;
2072#endif
2073
2074
2075
2076
2077
2078 org_mount_opt = sbi->mount_opt;
2079 old_sb_flags = sb->s_flags;
2080
2081#ifdef CONFIG_QUOTA
2082 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
2083 for (i = 0; i < MAXQUOTAS; i++) {
2084 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2085 org_mount_opt.s_qf_names[i] =
2086 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
2087 GFP_KERNEL);
2088 if (!org_mount_opt.s_qf_names[i]) {
2089 for (j = 0; j < i; j++)
2090 kfree(org_mount_opt.s_qf_names[j]);
2091 return -ENOMEM;
2092 }
2093 } else {
2094 org_mount_opt.s_qf_names[i] = NULL;
2095 }
2096 }
2097#endif
2098
2099
2100 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
2101 err = f2fs_commit_super(sbi, false);
2102 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
2103 err);
2104 if (!err)
2105 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2106 }
2107
2108 default_options(sbi);
2109
2110
2111 err = parse_options(sb, data, true);
2112 if (err)
2113 goto restore_opts;
2114 checkpoint_changed =
2115 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
2116
2117
2118
2119
2120
2121 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
2122 goto skip;
2123
2124 if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) {
2125 err = -EROFS;
2126 goto restore_opts;
2127 }
2128
2129#ifdef CONFIG_QUOTA
2130 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
2131 err = dquot_suspend(sb, -1);
2132 if (err < 0)
2133 goto restore_opts;
2134 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
2135
2136 sb->s_flags &= ~SB_RDONLY;
2137 if (sb_any_quota_suspended(sb)) {
2138 dquot_resume(sb, -1);
2139 } else if (f2fs_sb_has_quota_ino(sbi)) {
2140 err = f2fs_enable_quotas(sb);
2141 if (err)
2142 goto restore_opts;
2143 }
2144 }
2145#endif
2146
2147 if (no_atgc == !!test_opt(sbi, ATGC)) {
2148 err = -EINVAL;
2149 f2fs_warn(sbi, "switch atgc option is not allowed");
2150 goto restore_opts;
2151 }
2152
2153
2154 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
2155 err = -EINVAL;
2156 f2fs_warn(sbi, "switch extent_cache option is not allowed");
2157 goto restore_opts;
2158 }
2159
2160 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
2161 err = -EINVAL;
2162 f2fs_warn(sbi, "switch io_bits option is not allowed");
2163 goto restore_opts;
2164 }
2165
2166 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) {
2167 err = -EINVAL;
2168 f2fs_warn(sbi, "switch compress_cache option is not allowed");
2169 goto restore_opts;
2170 }
2171
2172 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
2173 err = -EINVAL;
2174 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
2175 goto restore_opts;
2176 }
2177
2178
2179
2180
2181
2182
2183 if ((*flags & SB_RDONLY) ||
2184 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF &&
2185 !test_opt(sbi, GC_MERGE))) {
2186 if (sbi->gc_thread) {
2187 f2fs_stop_gc_thread(sbi);
2188 need_restart_gc = true;
2189 }
2190 } else if (!sbi->gc_thread) {
2191 err = f2fs_start_gc_thread(sbi);
2192 if (err)
2193 goto restore_opts;
2194 need_stop_gc = true;
2195 }
2196
2197 if (*flags & SB_RDONLY ||
2198 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
2199 sync_inodes_sb(sb);
2200
2201 set_sbi_flag(sbi, SBI_IS_DIRTY);
2202 set_sbi_flag(sbi, SBI_IS_CLOSE);
2203 f2fs_sync_fs(sb, 1);
2204 clear_sbi_flag(sbi, SBI_IS_CLOSE);
2205 }
2206
2207 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
2208 !test_opt(sbi, MERGE_CHECKPOINT)) {
2209 f2fs_stop_ckpt_thread(sbi);
2210 need_restart_ckpt = true;
2211 } else {
2212 err = f2fs_start_ckpt_thread(sbi);
2213 if (err) {
2214 f2fs_err(sbi,
2215 "Failed to start F2FS issue_checkpoint_thread (%d)",
2216 err);
2217 goto restore_gc;
2218 }
2219 need_stop_ckpt = true;
2220 }
2221
2222
2223
2224
2225
2226 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
2227 clear_opt(sbi, FLUSH_MERGE);
2228 f2fs_destroy_flush_cmd_control(sbi, false);
2229 need_restart_flush = true;
2230 } else {
2231 err = f2fs_create_flush_cmd_control(sbi);
2232 if (err)
2233 goto restore_ckpt;
2234 need_stop_flush = true;
2235 }
2236
2237 if (checkpoint_changed) {
2238 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
2239 err = f2fs_disable_checkpoint(sbi);
2240 if (err)
2241 goto restore_flush;
2242 } else {
2243 f2fs_enable_checkpoint(sbi);
2244 }
2245 }
2246
2247skip:
2248#ifdef CONFIG_QUOTA
2249
2250 for (i = 0; i < MAXQUOTAS; i++)
2251 kfree(org_mount_opt.s_qf_names[i]);
2252#endif
2253
2254 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
2255 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
2256
2257 limit_reserve_root(sbi);
2258 adjust_unusable_cap_perc(sbi);
2259 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
2260 return 0;
2261restore_flush:
2262 if (need_restart_flush) {
2263 if (f2fs_create_flush_cmd_control(sbi))
2264 f2fs_warn(sbi, "background flush thread has stopped");
2265 } else if (need_stop_flush) {
2266 clear_opt(sbi, FLUSH_MERGE);
2267 f2fs_destroy_flush_cmd_control(sbi, false);
2268 }
2269restore_ckpt:
2270 if (need_restart_ckpt) {
2271 if (f2fs_start_ckpt_thread(sbi))
2272 f2fs_warn(sbi, "background ckpt thread has stopped");
2273 } else if (need_stop_ckpt) {
2274 f2fs_stop_ckpt_thread(sbi);
2275 }
2276restore_gc:
2277 if (need_restart_gc) {
2278 if (f2fs_start_gc_thread(sbi))
2279 f2fs_warn(sbi, "background gc thread has stopped");
2280 } else if (need_stop_gc) {
2281 f2fs_stop_gc_thread(sbi);
2282 }
2283restore_opts:
2284#ifdef CONFIG_QUOTA
2285 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
2286 for (i = 0; i < MAXQUOTAS; i++) {
2287 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
2288 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
2289 }
2290#endif
2291 sbi->mount_opt = org_mount_opt;
2292 sb->s_flags = old_sb_flags;
2293 return err;
2294}
2295
2296#ifdef CONFIG_QUOTA
2297
2298static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
2299 size_t len, loff_t off)
2300{
2301 struct inode *inode = sb_dqopt(sb)->files[type];
2302 struct address_space *mapping = inode->i_mapping;
2303 block_t blkidx = F2FS_BYTES_TO_BLK(off);
2304 int offset = off & (sb->s_blocksize - 1);
2305 int tocopy;
2306 size_t toread;
2307 loff_t i_size = i_size_read(inode);
2308 struct page *page;
2309 char *kaddr;
2310
2311 if (off > i_size)
2312 return 0;
2313
2314 if (off + len > i_size)
2315 len = i_size - off;
2316 toread = len;
2317 while (toread > 0) {
2318 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
2319repeat:
2320 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
2321 if (IS_ERR(page)) {
2322 if (PTR_ERR(page) == -ENOMEM) {
2323 congestion_wait(BLK_RW_ASYNC,
2324 DEFAULT_IO_TIMEOUT);
2325 goto repeat;
2326 }
2327 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2328 return PTR_ERR(page);
2329 }
2330
2331 lock_page(page);
2332
2333 if (unlikely(page->mapping != mapping)) {
2334 f2fs_put_page(page, 1);
2335 goto repeat;
2336 }
2337 if (unlikely(!PageUptodate(page))) {
2338 f2fs_put_page(page, 1);
2339 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2340 return -EIO;
2341 }
2342
2343 kaddr = kmap_atomic(page);
2344 memcpy(data, kaddr + offset, tocopy);
2345 kunmap_atomic(kaddr);
2346 f2fs_put_page(page, 1);
2347
2348 offset = 0;
2349 toread -= tocopy;
2350 data += tocopy;
2351 blkidx++;
2352 }
2353 return len;
2354}
2355
2356
2357static ssize_t f2fs_quota_write(struct super_block *sb, int type,
2358 const char *data, size_t len, loff_t off)
2359{
2360 struct inode *inode = sb_dqopt(sb)->files[type];
2361 struct address_space *mapping = inode->i_mapping;
2362 const struct address_space_operations *a_ops = mapping->a_ops;
2363 int offset = off & (sb->s_blocksize - 1);
2364 size_t towrite = len;
2365 struct page *page;
2366 void *fsdata = NULL;
2367 char *kaddr;
2368 int err = 0;
2369 int tocopy;
2370
2371 while (towrite > 0) {
2372 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
2373 towrite);
2374retry:
2375 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
2376 &page, &fsdata);
2377 if (unlikely(err)) {
2378 if (err == -ENOMEM) {
2379 congestion_wait(BLK_RW_ASYNC,
2380 DEFAULT_IO_TIMEOUT);
2381 goto retry;
2382 }
2383 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2384 break;
2385 }
2386
2387 kaddr = kmap_atomic(page);
2388 memcpy(kaddr + offset, data, tocopy);
2389 kunmap_atomic(kaddr);
2390 flush_dcache_page(page);
2391
2392 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
2393 page, fsdata);
2394 offset = 0;
2395 towrite -= tocopy;
2396 off += tocopy;
2397 data += tocopy;
2398 cond_resched();
2399 }
2400
2401 if (len == towrite)
2402 return err;
2403 inode->i_mtime = inode->i_ctime = current_time(inode);
2404 f2fs_mark_inode_dirty_sync(inode, false);
2405 return len - towrite;
2406}
2407
2408static struct dquot **f2fs_get_dquots(struct inode *inode)
2409{
2410 return F2FS_I(inode)->i_dquot;
2411}
2412
2413static qsize_t *f2fs_get_reserved_space(struct inode *inode)
2414{
2415 return &F2FS_I(inode)->i_reserved_quota;
2416}
2417
2418static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
2419{
2420 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
2421 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
2422 return 0;
2423 }
2424
2425 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
2426 F2FS_OPTION(sbi).s_jquota_fmt, type);
2427}
2428
2429int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
2430{
2431 int enabled = 0;
2432 int i, err;
2433
2434 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
2435 err = f2fs_enable_quotas(sbi->sb);
2436 if (err) {
2437 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
2438 return 0;
2439 }
2440 return 1;
2441 }
2442
2443 for (i = 0; i < MAXQUOTAS; i++) {
2444 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2445 err = f2fs_quota_on_mount(sbi, i);
2446 if (!err) {
2447 enabled = 1;
2448 continue;
2449 }
2450 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2451 err, i);
2452 }
2453 }
2454 return enabled;
2455}
2456
2457static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2458 unsigned int flags)
2459{
2460 struct inode *qf_inode;
2461 unsigned long qf_inum;
2462 int err;
2463
2464 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
2465
2466 qf_inum = f2fs_qf_ino(sb, type);
2467 if (!qf_inum)
2468 return -EPERM;
2469
2470 qf_inode = f2fs_iget(sb, qf_inum);
2471 if (IS_ERR(qf_inode)) {
2472 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
2473 return PTR_ERR(qf_inode);
2474 }
2475
2476
2477 qf_inode->i_flags |= S_NOQUOTA;
2478 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
2479 iput(qf_inode);
2480 return err;
2481}
2482
2483static int f2fs_enable_quotas(struct super_block *sb)
2484{
2485 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2486 int type, err = 0;
2487 unsigned long qf_inum;
2488 bool quota_mopt[MAXQUOTAS] = {
2489 test_opt(sbi, USRQUOTA),
2490 test_opt(sbi, GRPQUOTA),
2491 test_opt(sbi, PRJQUOTA),
2492 };
2493
2494 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
2495 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
2496 return 0;
2497 }
2498
2499 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2500
2501 for (type = 0; type < MAXQUOTAS; type++) {
2502 qf_inum = f2fs_qf_ino(sb, type);
2503 if (qf_inum) {
2504 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2505 DQUOT_USAGE_ENABLED |
2506 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2507 if (err) {
2508 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2509 type, err);
2510 for (type--; type >= 0; type--)
2511 dquot_quota_off(sb, type);
2512 set_sbi_flag(F2FS_SB(sb),
2513 SBI_QUOTA_NEED_REPAIR);
2514 return err;
2515 }
2516 }
2517 }
2518 return 0;
2519}
2520
2521int f2fs_quota_sync(struct super_block *sb, int type)
2522{
2523 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2524 struct quota_info *dqopt = sb_dqopt(sb);
2525 int cnt;
2526 int ret;
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537 f2fs_lock_op(sbi);
2538
2539 down_read(&sbi->quota_sem);
2540 ret = dquot_writeback_dquots(sb, type);
2541 if (ret)
2542 goto out;
2543
2544
2545
2546
2547
2548 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
2549 struct address_space *mapping;
2550
2551 if (type != -1 && cnt != type)
2552 continue;
2553 if (!sb_has_quota_active(sb, cnt))
2554 continue;
2555
2556 mapping = dqopt->files[cnt]->i_mapping;
2557
2558 ret = filemap_fdatawrite(mapping);
2559 if (ret)
2560 goto out;
2561
2562
2563 if (is_journalled_quota(sbi))
2564 continue;
2565
2566 ret = filemap_fdatawait(mapping);
2567 if (ret)
2568 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2569
2570 inode_lock(dqopt->files[cnt]);
2571 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
2572 inode_unlock(dqopt->files[cnt]);
2573 }
2574out:
2575 if (ret)
2576 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2577 up_read(&sbi->quota_sem);
2578 f2fs_unlock_op(sbi);
2579 return ret;
2580}
2581
2582static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2583 const struct path *path)
2584{
2585 struct inode *inode;
2586 int err;
2587
2588
2589 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2590 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2591 return -EBUSY;
2592 }
2593
2594 err = f2fs_quota_sync(sb, type);
2595 if (err)
2596 return err;
2597
2598 err = dquot_quota_on(sb, type, format_id, path);
2599 if (err)
2600 return err;
2601
2602 inode = d_inode(path->dentry);
2603
2604 inode_lock(inode);
2605 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
2606 f2fs_set_inode_flags(inode);
2607 inode_unlock(inode);
2608 f2fs_mark_inode_dirty_sync(inode, false);
2609
2610 return 0;
2611}
2612
2613static int __f2fs_quota_off(struct super_block *sb, int type)
2614{
2615 struct inode *inode = sb_dqopt(sb)->files[type];
2616 int err;
2617
2618 if (!inode || !igrab(inode))
2619 return dquot_quota_off(sb, type);
2620
2621 err = f2fs_quota_sync(sb, type);
2622 if (err)
2623 goto out_put;
2624
2625 err = dquot_quota_off(sb, type);
2626 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
2627 goto out_put;
2628
2629 inode_lock(inode);
2630 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
2631 f2fs_set_inode_flags(inode);
2632 inode_unlock(inode);
2633 f2fs_mark_inode_dirty_sync(inode, false);
2634out_put:
2635 iput(inode);
2636 return err;
2637}
2638
2639static int f2fs_quota_off(struct super_block *sb, int type)
2640{
2641 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2642 int err;
2643
2644 err = __f2fs_quota_off(sb, type);
2645
2646
2647
2648
2649
2650
2651 if (is_journalled_quota(sbi))
2652 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2653 return err;
2654}
2655
2656void f2fs_quota_off_umount(struct super_block *sb)
2657{
2658 int type;
2659 int err;
2660
2661 for (type = 0; type < MAXQUOTAS; type++) {
2662 err = __f2fs_quota_off(sb, type);
2663 if (err) {
2664 int ret = dquot_quota_off(sb, type);
2665
2666 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2667 type, err, ret);
2668 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2669 }
2670 }
2671
2672
2673
2674
2675
2676 sync_filesystem(sb);
2677}
2678
2679static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2680{
2681 struct quota_info *dqopt = sb_dqopt(sb);
2682 int type;
2683
2684 for (type = 0; type < MAXQUOTAS; type++) {
2685 if (!dqopt->files[type])
2686 continue;
2687 f2fs_inode_synced(dqopt->files[type]);
2688 }
2689}
2690
2691static int f2fs_dquot_commit(struct dquot *dquot)
2692{
2693 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2694 int ret;
2695
2696 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
2697 ret = dquot_commit(dquot);
2698 if (ret < 0)
2699 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2700 up_read(&sbi->quota_sem);
2701 return ret;
2702}
2703
2704static int f2fs_dquot_acquire(struct dquot *dquot)
2705{
2706 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2707 int ret;
2708
2709 down_read(&sbi->quota_sem);
2710 ret = dquot_acquire(dquot);
2711 if (ret < 0)
2712 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2713 up_read(&sbi->quota_sem);
2714 return ret;
2715}
2716
2717static int f2fs_dquot_release(struct dquot *dquot)
2718{
2719 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2720 int ret = dquot_release(dquot);
2721
2722 if (ret < 0)
2723 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2724 return ret;
2725}
2726
2727static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2728{
2729 struct super_block *sb = dquot->dq_sb;
2730 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2731 int ret = dquot_mark_dquot_dirty(dquot);
2732
2733
2734 if (is_journalled_quota(sbi))
2735 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2736
2737 return ret;
2738}
2739
2740static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2741{
2742 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2743 int ret = dquot_commit_info(sb, type);
2744
2745 if (ret < 0)
2746 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2747 return ret;
2748}
2749
2750static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
2751{
2752 *projid = F2FS_I(inode)->i_projid;
2753 return 0;
2754}
2755
2756static const struct dquot_operations f2fs_quota_operations = {
2757 .get_reserved_space = f2fs_get_reserved_space,
2758 .write_dquot = f2fs_dquot_commit,
2759 .acquire_dquot = f2fs_dquot_acquire,
2760 .release_dquot = f2fs_dquot_release,
2761 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2762 .write_info = f2fs_dquot_commit_info,
2763 .alloc_dquot = dquot_alloc,
2764 .destroy_dquot = dquot_destroy,
2765 .get_projid = f2fs_get_projid,
2766 .get_next_id = dquot_get_next_id,
2767};
2768
2769static const struct quotactl_ops f2fs_quotactl_ops = {
2770 .quota_on = f2fs_quota_on,
2771 .quota_off = f2fs_quota_off,
2772 .quota_sync = f2fs_quota_sync,
2773 .get_state = dquot_get_state,
2774 .set_info = dquot_set_dqinfo,
2775 .get_dqblk = dquot_get_dqblk,
2776 .set_dqblk = dquot_set_dqblk,
2777 .get_nextdqblk = dquot_get_next_dqblk,
2778};
2779#else
2780int f2fs_quota_sync(struct super_block *sb, int type)
2781{
2782 return 0;
2783}
2784
2785void f2fs_quota_off_umount(struct super_block *sb)
2786{
2787}
2788#endif
2789
2790static const struct super_operations f2fs_sops = {
2791 .alloc_inode = f2fs_alloc_inode,
2792 .free_inode = f2fs_free_inode,
2793 .drop_inode = f2fs_drop_inode,
2794 .write_inode = f2fs_write_inode,
2795 .dirty_inode = f2fs_dirty_inode,
2796 .show_options = f2fs_show_options,
2797#ifdef CONFIG_QUOTA
2798 .quota_read = f2fs_quota_read,
2799 .quota_write = f2fs_quota_write,
2800 .get_dquots = f2fs_get_dquots,
2801#endif
2802 .evict_inode = f2fs_evict_inode,
2803 .put_super = f2fs_put_super,
2804 .sync_fs = f2fs_sync_fs,
2805 .freeze_fs = f2fs_freeze,
2806 .unfreeze_fs = f2fs_unfreeze,
2807 .statfs = f2fs_statfs,
2808 .remount_fs = f2fs_remount,
2809};
2810
2811#ifdef CONFIG_FS_ENCRYPTION
2812static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2813{
2814 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2815 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2816 ctx, len, NULL);
2817}
2818
2819static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2820 void *fs_data)
2821{
2822 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2823
2824
2825
2826
2827
2828
2829
2830 if (f2fs_sb_has_lost_found(sbi) &&
2831 inode->i_ino == F2FS_ROOT_INO(sbi))
2832 return -EPERM;
2833
2834 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2835 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2836 ctx, len, fs_data, XATTR_CREATE);
2837}
2838
2839static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
2840{
2841 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy;
2842}
2843
2844static bool f2fs_has_stable_inodes(struct super_block *sb)
2845{
2846 return true;
2847}
2848
2849static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
2850 int *ino_bits_ret, int *lblk_bits_ret)
2851{
2852 *ino_bits_ret = 8 * sizeof(nid_t);
2853 *lblk_bits_ret = 8 * sizeof(block_t);
2854}
2855
2856static int f2fs_get_num_devices(struct super_block *sb)
2857{
2858 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2859
2860 if (f2fs_is_multi_device(sbi))
2861 return sbi->s_ndevs;
2862 return 1;
2863}
2864
2865static void f2fs_get_devices(struct super_block *sb,
2866 struct request_queue **devs)
2867{
2868 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2869 int i;
2870
2871 for (i = 0; i < sbi->s_ndevs; i++)
2872 devs[i] = bdev_get_queue(FDEV(i).bdev);
2873}
2874
2875static const struct fscrypt_operations f2fs_cryptops = {
2876 .key_prefix = "f2fs:",
2877 .get_context = f2fs_get_context,
2878 .set_context = f2fs_set_context,
2879 .get_dummy_policy = f2fs_get_dummy_policy,
2880 .empty_dir = f2fs_empty_dir,
2881 .max_namelen = F2FS_NAME_LEN,
2882 .has_stable_inodes = f2fs_has_stable_inodes,
2883 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
2884 .get_num_devices = f2fs_get_num_devices,
2885 .get_devices = f2fs_get_devices,
2886};
2887#endif
2888
2889static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2890 u64 ino, u32 generation)
2891{
2892 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2893 struct inode *inode;
2894
2895 if (f2fs_check_nid_range(sbi, ino))
2896 return ERR_PTR(-ESTALE);
2897
2898
2899
2900
2901
2902
2903 inode = f2fs_iget(sb, ino);
2904 if (IS_ERR(inode))
2905 return ERR_CAST(inode);
2906 if (unlikely(generation && inode->i_generation != generation)) {
2907
2908 iput(inode);
2909 return ERR_PTR(-ESTALE);
2910 }
2911 return inode;
2912}
2913
2914static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2915 int fh_len, int fh_type)
2916{
2917 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2918 f2fs_nfs_get_inode);
2919}
2920
2921static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2922 int fh_len, int fh_type)
2923{
2924 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2925 f2fs_nfs_get_inode);
2926}
2927
2928static const struct export_operations f2fs_export_ops = {
2929 .fh_to_dentry = f2fs_fh_to_dentry,
2930 .fh_to_parent = f2fs_fh_to_parent,
2931 .get_parent = f2fs_get_parent,
2932};
2933
2934loff_t max_file_blocks(struct inode *inode)
2935{
2936 loff_t result = 0;
2937 loff_t leaf_count;
2938
2939
2940
2941
2942
2943
2944
2945
2946 if (inode && f2fs_compressed_file(inode))
2947 leaf_count = ADDRS_PER_BLOCK(inode);
2948 else
2949 leaf_count = DEF_ADDRS_PER_BLOCK;
2950
2951
2952 result += (leaf_count * 2);
2953
2954
2955 leaf_count *= NIDS_PER_BLOCK;
2956 result += (leaf_count * 2);
2957
2958
2959 leaf_count *= NIDS_PER_BLOCK;
2960 result += leaf_count;
2961
2962 return result;
2963}
2964
2965static int __f2fs_commit_super(struct buffer_head *bh,
2966 struct f2fs_super_block *super)
2967{
2968 lock_buffer(bh);
2969 if (super)
2970 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
2971 set_buffer_dirty(bh);
2972 unlock_buffer(bh);
2973
2974
2975 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
2976}
2977
2978static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
2979 struct buffer_head *bh)
2980{
2981 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2982 (bh->b_data + F2FS_SUPER_OFFSET);
2983 struct super_block *sb = sbi->sb;
2984 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2985 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2986 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2987 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2988 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2989 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2990 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2991 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2992 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2993 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2994 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2995 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2996 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2997 u64 main_end_blkaddr = main_blkaddr +
2998 (segment_count_main << log_blocks_per_seg);
2999 u64 seg_end_blkaddr = segment0_blkaddr +
3000 (segment_count << log_blocks_per_seg);
3001
3002 if (segment0_blkaddr != cp_blkaddr) {
3003 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
3004 segment0_blkaddr, cp_blkaddr);
3005 return true;
3006 }
3007
3008 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
3009 sit_blkaddr) {
3010 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
3011 cp_blkaddr, sit_blkaddr,
3012 segment_count_ckpt << log_blocks_per_seg);
3013 return true;
3014 }
3015
3016 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
3017 nat_blkaddr) {
3018 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
3019 sit_blkaddr, nat_blkaddr,
3020 segment_count_sit << log_blocks_per_seg);
3021 return true;
3022 }
3023
3024 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
3025 ssa_blkaddr) {
3026 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
3027 nat_blkaddr, ssa_blkaddr,
3028 segment_count_nat << log_blocks_per_seg);
3029 return true;
3030 }
3031
3032 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
3033 main_blkaddr) {
3034 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
3035 ssa_blkaddr, main_blkaddr,
3036 segment_count_ssa << log_blocks_per_seg);
3037 return true;
3038 }
3039
3040 if (main_end_blkaddr > seg_end_blkaddr) {
3041 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)",
3042 main_blkaddr, seg_end_blkaddr,
3043 segment_count_main << log_blocks_per_seg);
3044 return true;
3045 } else if (main_end_blkaddr < seg_end_blkaddr) {
3046 int err = 0;
3047 char *res;
3048
3049
3050 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
3051 segment0_blkaddr) >> log_blocks_per_seg);
3052
3053 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
3054 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3055 res = "internally";
3056 } else {
3057 err = __f2fs_commit_super(bh, NULL);
3058 res = err ? "failed" : "done";
3059 }
3060 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)",
3061 res, main_blkaddr, seg_end_blkaddr,
3062 segment_count_main << log_blocks_per_seg);
3063 if (err)
3064 return true;
3065 }
3066 return false;
3067}
3068
3069static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
3070 struct buffer_head *bh)
3071{
3072 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main;
3073 block_t total_sections, blocks_per_seg;
3074 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3075 (bh->b_data + F2FS_SUPER_OFFSET);
3076 size_t crc_offset = 0;
3077 __u32 crc = 0;
3078
3079 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
3080 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
3081 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
3082 return -EINVAL;
3083 }
3084
3085
3086 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
3087 crc_offset = le32_to_cpu(raw_super->checksum_offset);
3088 if (crc_offset !=
3089 offsetof(struct f2fs_super_block, crc)) {
3090 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
3091 crc_offset);
3092 return -EFSCORRUPTED;
3093 }
3094 crc = le32_to_cpu(raw_super->crc);
3095 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
3096 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
3097 return -EFSCORRUPTED;
3098 }
3099 }
3100
3101
3102 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) {
3103 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u",
3104 le32_to_cpu(raw_super->log_blocksize),
3105 F2FS_BLKSIZE_BITS);
3106 return -EFSCORRUPTED;
3107 }
3108
3109
3110 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
3111 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
3112 le32_to_cpu(raw_super->log_blocks_per_seg));
3113 return -EFSCORRUPTED;
3114 }
3115
3116
3117 if (le32_to_cpu(raw_super->log_sectorsize) >
3118 F2FS_MAX_LOG_SECTOR_SIZE ||
3119 le32_to_cpu(raw_super->log_sectorsize) <
3120 F2FS_MIN_LOG_SECTOR_SIZE) {
3121 f2fs_info(sbi, "Invalid log sectorsize (%u)",
3122 le32_to_cpu(raw_super->log_sectorsize));
3123 return -EFSCORRUPTED;
3124 }
3125 if (le32_to_cpu(raw_super->log_sectors_per_block) +
3126 le32_to_cpu(raw_super->log_sectorsize) !=
3127 F2FS_MAX_LOG_SECTOR_SIZE) {
3128 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
3129 le32_to_cpu(raw_super->log_sectors_per_block),
3130 le32_to_cpu(raw_super->log_sectorsize));
3131 return -EFSCORRUPTED;
3132 }
3133
3134 segment_count = le32_to_cpu(raw_super->segment_count);
3135 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3136 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3137 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3138 total_sections = le32_to_cpu(raw_super->section_count);
3139
3140
3141 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
3142
3143 if (segment_count > F2FS_MAX_SEGMENT ||
3144 segment_count < F2FS_MIN_SEGMENTS) {
3145 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
3146 return -EFSCORRUPTED;
3147 }
3148
3149 if (total_sections > segment_count_main || total_sections < 1 ||
3150 segs_per_sec > segment_count || !segs_per_sec) {
3151 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
3152 segment_count, total_sections, segs_per_sec);
3153 return -EFSCORRUPTED;
3154 }
3155
3156 if (segment_count_main != total_sections * segs_per_sec) {
3157 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)",
3158 segment_count_main, total_sections, segs_per_sec);
3159 return -EFSCORRUPTED;
3160 }
3161
3162 if ((segment_count / segs_per_sec) < total_sections) {
3163 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
3164 segment_count, segs_per_sec, total_sections);
3165 return -EFSCORRUPTED;
3166 }
3167
3168 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
3169 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
3170 segment_count, le64_to_cpu(raw_super->block_count));
3171 return -EFSCORRUPTED;
3172 }
3173
3174 if (RDEV(0).path[0]) {
3175 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
3176 int i = 1;
3177
3178 while (i < MAX_DEVICES && RDEV(i).path[0]) {
3179 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
3180 i++;
3181 }
3182 if (segment_count != dev_seg_count) {
3183 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
3184 segment_count, dev_seg_count);
3185 return -EFSCORRUPTED;
3186 }
3187 } else {
3188 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) &&
3189 !bdev_is_zoned(sbi->sb->s_bdev)) {
3190 f2fs_info(sbi, "Zoned block device path is missing");
3191 return -EFSCORRUPTED;
3192 }
3193 }
3194
3195 if (secs_per_zone > total_sections || !secs_per_zone) {
3196 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
3197 secs_per_zone, total_sections);
3198 return -EFSCORRUPTED;
3199 }
3200 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
3201 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
3202 (le32_to_cpu(raw_super->extension_count) +
3203 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
3204 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
3205 le32_to_cpu(raw_super->extension_count),
3206 raw_super->hot_ext_count,
3207 F2FS_MAX_EXTENSION);
3208 return -EFSCORRUPTED;
3209 }
3210
3211 if (le32_to_cpu(raw_super->cp_payload) >
3212 (blocks_per_seg - F2FS_CP_PACKS)) {
3213 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
3214 le32_to_cpu(raw_super->cp_payload),
3215 blocks_per_seg - F2FS_CP_PACKS);
3216 return -EFSCORRUPTED;
3217 }
3218
3219
3220 if (le32_to_cpu(raw_super->node_ino) != 1 ||
3221 le32_to_cpu(raw_super->meta_ino) != 2 ||
3222 le32_to_cpu(raw_super->root_ino) != 3) {
3223 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
3224 le32_to_cpu(raw_super->node_ino),
3225 le32_to_cpu(raw_super->meta_ino),
3226 le32_to_cpu(raw_super->root_ino));
3227 return -EFSCORRUPTED;
3228 }
3229
3230
3231 if (sanity_check_area_boundary(sbi, bh))
3232 return -EFSCORRUPTED;
3233
3234 return 0;
3235}
3236
3237int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
3238{
3239 unsigned int total, fsmeta;
3240 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3241 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3242 unsigned int ovp_segments, reserved_segments;
3243 unsigned int main_segs, blocks_per_seg;
3244 unsigned int sit_segs, nat_segs;
3245 unsigned int sit_bitmap_size, nat_bitmap_size;
3246 unsigned int log_blocks_per_seg;
3247 unsigned int segment_count_main;
3248 unsigned int cp_pack_start_sum, cp_payload;
3249 block_t user_block_count, valid_user_blocks;
3250 block_t avail_node_count, valid_node_count;
3251 int i, j;
3252
3253 total = le32_to_cpu(raw_super->segment_count);
3254 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
3255 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
3256 fsmeta += sit_segs;
3257 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
3258 fsmeta += nat_segs;
3259 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
3260 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
3261
3262 if (unlikely(fsmeta >= total))
3263 return 1;
3264
3265 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
3266 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
3267
3268 if (!f2fs_sb_has_readonly(sbi) &&
3269 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
3270 ovp_segments == 0 || reserved_segments == 0)) {
3271 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
3272 return 1;
3273 }
3274 user_block_count = le64_to_cpu(ckpt->user_block_count);
3275 segment_count_main = le32_to_cpu(raw_super->segment_count_main) +
3276 (f2fs_sb_has_readonly(sbi) ? 1 : 0);
3277 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3278 if (!user_block_count || user_block_count >=
3279 segment_count_main << log_blocks_per_seg) {
3280 f2fs_err(sbi, "Wrong user_block_count: %u",
3281 user_block_count);
3282 return 1;
3283 }
3284
3285 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
3286 if (valid_user_blocks > user_block_count) {
3287 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
3288 valid_user_blocks, user_block_count);
3289 return 1;
3290 }
3291
3292 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
3293 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
3294 if (valid_node_count > avail_node_count) {
3295 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
3296 valid_node_count, avail_node_count);
3297 return 1;
3298 }
3299
3300 main_segs = le32_to_cpu(raw_super->segment_count_main);
3301 blocks_per_seg = sbi->blocks_per_seg;
3302
3303 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3304 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
3305 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
3306 return 1;
3307
3308 if (f2fs_sb_has_readonly(sbi))
3309 goto check_data;
3310
3311 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
3312 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3313 le32_to_cpu(ckpt->cur_node_segno[j])) {
3314 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
3315 i, j,
3316 le32_to_cpu(ckpt->cur_node_segno[i]));
3317 return 1;
3318 }
3319 }
3320 }
3321check_data:
3322 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
3323 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
3324 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
3325 return 1;
3326
3327 if (f2fs_sb_has_readonly(sbi))
3328 goto skip_cross;
3329
3330 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
3331 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
3332 le32_to_cpu(ckpt->cur_data_segno[j])) {
3333 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
3334 i, j,
3335 le32_to_cpu(ckpt->cur_data_segno[i]));
3336 return 1;
3337 }
3338 }
3339 }
3340 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3341 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
3342 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3343 le32_to_cpu(ckpt->cur_data_segno[j])) {
3344 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
3345 i, j,
3346 le32_to_cpu(ckpt->cur_node_segno[i]));
3347 return 1;
3348 }
3349 }
3350 }
3351skip_cross:
3352 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
3353 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
3354
3355 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
3356 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
3357 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
3358 sit_bitmap_size, nat_bitmap_size);
3359 return 1;
3360 }
3361
3362 cp_pack_start_sum = __start_sum_addr(sbi);
3363 cp_payload = __cp_payload(sbi);
3364 if (cp_pack_start_sum < cp_payload + 1 ||
3365 cp_pack_start_sum > blocks_per_seg - 1 -
3366 NR_CURSEG_PERSIST_TYPE) {
3367 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
3368 cp_pack_start_sum);
3369 return 1;
3370 }
3371
3372 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
3373 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
3374 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
3375 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
3376 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
3377 le32_to_cpu(ckpt->checksum_offset));
3378 return 1;
3379 }
3380
3381 if (unlikely(f2fs_cp_error(sbi))) {
3382 f2fs_err(sbi, "A bug case: need to run fsck");
3383 return 1;
3384 }
3385 return 0;
3386}
3387
3388static void init_sb_info(struct f2fs_sb_info *sbi)
3389{
3390 struct f2fs_super_block *raw_super = sbi->raw_super;
3391 int i;
3392
3393 sbi->log_sectors_per_block =
3394 le32_to_cpu(raw_super->log_sectors_per_block);
3395 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
3396 sbi->blocksize = 1 << sbi->log_blocksize;
3397 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3398 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
3399 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3400 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3401 sbi->total_sections = le32_to_cpu(raw_super->section_count);
3402 sbi->total_node_count =
3403 (le32_to_cpu(raw_super->segment_count_nat) / 2)
3404 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
3405 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino);
3406 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino);
3407 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino);
3408 sbi->cur_victim_sec = NULL_SECNO;
3409 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
3410 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
3411 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
3412 sbi->migration_granularity = sbi->segs_per_sec;
3413
3414 sbi->dir_level = DEF_DIR_LEVEL;
3415 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
3416 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
3417 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
3418 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
3419 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
3420 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
3421 DEF_UMOUNT_DISCARD_TIMEOUT;
3422 clear_sbi_flag(sbi, SBI_NEED_FSCK);
3423
3424 for (i = 0; i < NR_COUNT_TYPE; i++)
3425 atomic_set(&sbi->nr_pages[i], 0);
3426
3427 for (i = 0; i < META; i++)
3428 atomic_set(&sbi->wb_sync_req[i], 0);
3429
3430 INIT_LIST_HEAD(&sbi->s_list);
3431 mutex_init(&sbi->umount_mutex);
3432 init_rwsem(&sbi->io_order_lock);
3433 spin_lock_init(&sbi->cp_lock);
3434
3435 sbi->dirty_device = 0;
3436 spin_lock_init(&sbi->dev_lock);
3437
3438 init_rwsem(&sbi->sb_lock);
3439 init_rwsem(&sbi->pin_sem);
3440}
3441
3442static int init_percpu_info(struct f2fs_sb_info *sbi)
3443{
3444 int err;
3445
3446 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
3447 if (err)
3448 return err;
3449
3450 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
3451 GFP_KERNEL);
3452 if (err)
3453 percpu_counter_destroy(&sbi->alloc_valid_block_count);
3454
3455 return err;
3456}
3457
3458#ifdef CONFIG_BLK_DEV_ZONED
3459
3460struct f2fs_report_zones_args {
3461 struct f2fs_dev_info *dev;
3462 bool zone_cap_mismatch;
3463};
3464
3465static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
3466 void *data)
3467{
3468 struct f2fs_report_zones_args *rz_args = data;
3469
3470 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
3471 return 0;
3472
3473 set_bit(idx, rz_args->dev->blkz_seq);
3474 rz_args->dev->zone_capacity_blocks[idx] = zone->capacity >>
3475 F2FS_LOG_SECTORS_PER_BLOCK;
3476 if (zone->len != zone->capacity && !rz_args->zone_cap_mismatch)
3477 rz_args->zone_cap_mismatch = true;
3478
3479 return 0;
3480}
3481
3482static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
3483{
3484 struct block_device *bdev = FDEV(devi).bdev;
3485 sector_t nr_sectors = bdev_nr_sectors(bdev);
3486 struct f2fs_report_zones_args rep_zone_arg;
3487 int ret;
3488
3489 if (!f2fs_sb_has_blkzoned(sbi))
3490 return 0;
3491
3492 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
3493 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3494 return -EINVAL;
3495 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3496 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3497 __ilog2_u32(sbi->blocks_per_blkz))
3498 return -EINVAL;
3499 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3500 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3501 sbi->log_blocks_per_blkz;
3502 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3503 FDEV(devi).nr_blkz++;
3504
3505 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
3506 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3507 * sizeof(unsigned long),
3508 GFP_KERNEL);
3509 if (!FDEV(devi).blkz_seq)
3510 return -ENOMEM;
3511
3512
3513 FDEV(devi).zone_capacity_blocks = f2fs_kzalloc(sbi,
3514 FDEV(devi).nr_blkz * sizeof(block_t),
3515 GFP_KERNEL);
3516 if (!FDEV(devi).zone_capacity_blocks)
3517 return -ENOMEM;
3518
3519 rep_zone_arg.dev = &FDEV(devi);
3520 rep_zone_arg.zone_cap_mismatch = false;
3521
3522 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3523 &rep_zone_arg);
3524 if (ret < 0)
3525 return ret;
3526
3527 if (!rep_zone_arg.zone_cap_mismatch) {
3528 kfree(FDEV(devi).zone_capacity_blocks);
3529 FDEV(devi).zone_capacity_blocks = NULL;
3530 }
3531
3532 return 0;
3533}
3534#endif
3535
3536
3537
3538
3539
3540
3541
3542static int read_raw_super_block(struct f2fs_sb_info *sbi,
3543 struct f2fs_super_block **raw_super,
3544 int *valid_super_block, int *recovery)
3545{
3546 struct super_block *sb = sbi->sb;
3547 int block;
3548 struct buffer_head *bh;
3549 struct f2fs_super_block *super;
3550 int err = 0;
3551
3552 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3553 if (!super)
3554 return -ENOMEM;
3555
3556 for (block = 0; block < 2; block++) {
3557 bh = sb_bread(sb, block);
3558 if (!bh) {
3559 f2fs_err(sbi, "Unable to read %dth superblock",
3560 block + 1);
3561 err = -EIO;
3562 *recovery = 1;
3563 continue;
3564 }
3565
3566
3567 err = sanity_check_raw_super(sbi, bh);
3568 if (err) {
3569 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3570 block + 1);
3571 brelse(bh);
3572 *recovery = 1;
3573 continue;
3574 }
3575
3576 if (!*raw_super) {
3577 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3578 sizeof(*super));
3579 *valid_super_block = block;
3580 *raw_super = super;
3581 }
3582 brelse(bh);
3583 }
3584
3585
3586 if (!*raw_super)
3587 kfree(super);
3588 else
3589 err = 0;
3590
3591 return err;
3592}
3593
3594int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
3595{
3596 struct buffer_head *bh;
3597 __u32 crc = 0;
3598 int err;
3599
3600 if ((recover && f2fs_readonly(sbi->sb)) ||
3601 bdev_read_only(sbi->sb->s_bdev)) {
3602 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3603 return -EROFS;
3604 }
3605
3606
3607 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
3608 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3609 offsetof(struct f2fs_super_block, crc));
3610 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3611 }
3612
3613
3614 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
3615 if (!bh)
3616 return -EIO;
3617 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3618 brelse(bh);
3619
3620
3621 if (recover || err)
3622 return err;
3623
3624
3625 bh = sb_bread(sbi->sb, sbi->valid_super_block);
3626 if (!bh)
3627 return -EIO;
3628 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3629 brelse(bh);
3630 return err;
3631}
3632
3633static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3634{
3635 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3636 unsigned int max_devices = MAX_DEVICES;
3637 int i;
3638
3639
3640 if (!RDEV(0).path[0]) {
3641 if (!bdev_is_zoned(sbi->sb->s_bdev))
3642 return 0;
3643 max_devices = 1;
3644 }
3645
3646
3647
3648
3649
3650 sbi->devs = f2fs_kzalloc(sbi,
3651 array_size(max_devices,
3652 sizeof(struct f2fs_dev_info)),
3653 GFP_KERNEL);
3654 if (!sbi->devs)
3655 return -ENOMEM;
3656
3657 for (i = 0; i < max_devices; i++) {
3658
3659 if (i > 0 && !RDEV(i).path[0])
3660 break;
3661
3662 if (max_devices == 1) {
3663
3664 FDEV(0).bdev =
3665 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3666 sbi->sb->s_mode, sbi->sb->s_type);
3667 } else {
3668
3669 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3670 FDEV(i).total_segments =
3671 le32_to_cpu(RDEV(i).total_segments);
3672 if (i == 0) {
3673 FDEV(i).start_blk = 0;
3674 FDEV(i).end_blk = FDEV(i).start_blk +
3675 (FDEV(i).total_segments <<
3676 sbi->log_blocks_per_seg) - 1 +
3677 le32_to_cpu(raw_super->segment0_blkaddr);
3678 } else {
3679 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3680 FDEV(i).end_blk = FDEV(i).start_blk +
3681 (FDEV(i).total_segments <<
3682 sbi->log_blocks_per_seg) - 1;
3683 }
3684 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3685 sbi->sb->s_mode, sbi->sb->s_type);
3686 }
3687 if (IS_ERR(FDEV(i).bdev))
3688 return PTR_ERR(FDEV(i).bdev);
3689
3690
3691 sbi->s_ndevs = i + 1;
3692
3693#ifdef CONFIG_BLK_DEV_ZONED
3694 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
3695 !f2fs_sb_has_blkzoned(sbi)) {
3696 f2fs_err(sbi, "Zoned block device feature not enabled");
3697 return -EINVAL;
3698 }
3699 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3700 if (init_blkz_info(sbi, i)) {
3701 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3702 return -EINVAL;
3703 }
3704 if (max_devices == 1)
3705 break;
3706 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3707 i, FDEV(i).path,
3708 FDEV(i).total_segments,
3709 FDEV(i).start_blk, FDEV(i).end_blk,
3710 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3711 "Host-aware" : "Host-managed");
3712 continue;
3713 }
3714#endif
3715 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3716 i, FDEV(i).path,
3717 FDEV(i).total_segments,
3718 FDEV(i).start_blk, FDEV(i).end_blk);
3719 }
3720 f2fs_info(sbi,
3721 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3722 return 0;
3723}
3724
3725static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3726{
3727#ifdef CONFIG_UNICODE
3728 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) {
3729 const struct f2fs_sb_encodings *encoding_info;
3730 struct unicode_map *encoding;
3731 __u16 encoding_flags;
3732
3733 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3734 &encoding_flags)) {
3735 f2fs_err(sbi,
3736 "Encoding requested by superblock is unknown");
3737 return -EINVAL;
3738 }
3739
3740 encoding = utf8_load(encoding_info->version);
3741 if (IS_ERR(encoding)) {
3742 f2fs_err(sbi,
3743 "can't mount with superblock charset: %s-%s "
3744 "not supported by the kernel. flags: 0x%x.",
3745 encoding_info->name, encoding_info->version,
3746 encoding_flags);
3747 return PTR_ERR(encoding);
3748 }
3749 f2fs_info(sbi, "Using encoding defined by superblock: "
3750 "%s-%s with flags 0x%hx", encoding_info->name,
3751 encoding_info->version?:"\b", encoding_flags);
3752
3753 sbi->sb->s_encoding = encoding;
3754 sbi->sb->s_encoding_flags = encoding_flags;
3755 }
3756#else
3757 if (f2fs_sb_has_casefold(sbi)) {
3758 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3759 return -EINVAL;
3760 }
3761#endif
3762 return 0;
3763}
3764
3765static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3766{
3767 struct f2fs_sm_info *sm_i = SM_I(sbi);
3768
3769
3770 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
3771 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
3772 sm_i->dcc_info->discard_granularity = 1;
3773 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3774 }
3775
3776 sbi->readdir_ra = 1;
3777}
3778
3779static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3780{
3781 struct f2fs_sb_info *sbi;
3782 struct f2fs_super_block *raw_super;
3783 struct inode *root;
3784 int err;
3785 bool skip_recovery = false, need_fsck = false;
3786 char *options = NULL;
3787 int recovery, i, valid_super_block;
3788 struct curseg_info *seg_i;
3789 int retry_cnt = 1;
3790
3791try_onemore:
3792 err = -EINVAL;
3793 raw_super = NULL;
3794 valid_super_block = -1;
3795 recovery = 0;
3796
3797
3798 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3799 if (!sbi)
3800 return -ENOMEM;
3801
3802 sbi->sb = sb;
3803
3804
3805 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3806 if (IS_ERR(sbi->s_chksum_driver)) {
3807 f2fs_err(sbi, "Cannot load crc32 driver.");
3808 err = PTR_ERR(sbi->s_chksum_driver);
3809 sbi->s_chksum_driver = NULL;
3810 goto free_sbi;
3811 }
3812
3813
3814 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
3815 f2fs_err(sbi, "unable to set blocksize");
3816 goto free_sbi;
3817 }
3818
3819 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
3820 &recovery);
3821 if (err)
3822 goto free_sbi;
3823
3824 sb->s_fs_info = sbi;
3825 sbi->raw_super = raw_super;
3826
3827
3828 if (f2fs_sb_has_inode_chksum(sbi))
3829 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3830 sizeof(raw_super->uuid));
3831
3832 default_options(sbi);
3833
3834 options = kstrdup((const char *)data, GFP_KERNEL);
3835 if (data && !options) {
3836 err = -ENOMEM;
3837 goto free_sb_buf;
3838 }
3839
3840 err = parse_options(sb, options, false);
3841 if (err)
3842 goto free_options;
3843
3844 sb->s_maxbytes = max_file_blocks(NULL) <<
3845 le32_to_cpu(raw_super->log_blocksize);
3846 sb->s_max_links = F2FS_LINK_MAX;
3847
3848 err = f2fs_setup_casefold(sbi);
3849 if (err)
3850 goto free_options;
3851
3852#ifdef CONFIG_QUOTA
3853 sb->dq_op = &f2fs_quota_operations;
3854 sb->s_qcop = &f2fs_quotactl_ops;
3855 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
3856
3857 if (f2fs_sb_has_quota_ino(sbi)) {
3858 for (i = 0; i < MAXQUOTAS; i++) {
3859 if (f2fs_qf_ino(sbi->sb, i))
3860 sbi->nquota_files++;
3861 }
3862 }
3863#endif
3864
3865 sb->s_op = &f2fs_sops;
3866#ifdef CONFIG_FS_ENCRYPTION
3867 sb->s_cop = &f2fs_cryptops;
3868#endif
3869#ifdef CONFIG_FS_VERITY
3870 sb->s_vop = &f2fs_verityops;
3871#endif
3872 sb->s_xattr = f2fs_xattr_handlers;
3873 sb->s_export_op = &f2fs_export_ops;
3874 sb->s_magic = F2FS_SUPER_MAGIC;
3875 sb->s_time_gran = 1;
3876 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3877 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
3878 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
3879 sb->s_iflags |= SB_I_CGROUPWB;
3880
3881
3882 sbi->valid_super_block = valid_super_block;
3883 init_rwsem(&sbi->gc_lock);
3884 mutex_init(&sbi->writepages);
3885 init_rwsem(&sbi->cp_global_sem);
3886 init_rwsem(&sbi->node_write);
3887 init_rwsem(&sbi->node_change);
3888
3889
3890 set_sbi_flag(sbi, SBI_POR_DOING);
3891 spin_lock_init(&sbi->stat_lock);
3892
3893
3894 spin_lock_init(&sbi->iostat_lock);
3895 sbi->iostat_enable = false;
3896 sbi->iostat_period_ms = DEFAULT_IOSTAT_PERIOD_MS;
3897
3898 for (i = 0; i < NR_PAGE_TYPE; i++) {
3899 int n = (i == META) ? 1 : NR_TEMP_TYPE;
3900 int j;
3901
3902 sbi->write_io[i] =
3903 f2fs_kmalloc(sbi,
3904 array_size(n,
3905 sizeof(struct f2fs_bio_info)),
3906 GFP_KERNEL);
3907 if (!sbi->write_io[i]) {
3908 err = -ENOMEM;
3909 goto free_bio_info;
3910 }
3911
3912 for (j = HOT; j < n; j++) {
3913 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3914 sbi->write_io[i][j].sbi = sbi;
3915 sbi->write_io[i][j].bio = NULL;
3916 spin_lock_init(&sbi->write_io[i][j].io_lock);
3917 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
3918 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
3919 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
3920 }
3921 }
3922
3923 init_rwsem(&sbi->cp_rwsem);
3924 init_rwsem(&sbi->quota_sem);
3925 init_waitqueue_head(&sbi->cp_wait);
3926 init_sb_info(sbi);
3927
3928 err = init_percpu_info(sbi);
3929 if (err)
3930 goto free_bio_info;
3931
3932 if (F2FS_IO_ALIGNED(sbi)) {
3933 sbi->write_io_dummy =
3934 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
3935 if (!sbi->write_io_dummy) {
3936 err = -ENOMEM;
3937 goto free_percpu;
3938 }
3939 }
3940
3941
3942 err = f2fs_init_xattr_caches(sbi);
3943 if (err)
3944 goto free_io_dummy;
3945 err = f2fs_init_page_array_cache(sbi);
3946 if (err)
3947 goto free_xattr_cache;
3948
3949
3950 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3951 if (IS_ERR(sbi->meta_inode)) {
3952 f2fs_err(sbi, "Failed to read F2FS meta data inode");
3953 err = PTR_ERR(sbi->meta_inode);
3954 goto free_page_array_cache;
3955 }
3956
3957 err = f2fs_get_valid_checkpoint(sbi);
3958 if (err) {
3959 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
3960 goto free_meta_inode;
3961 }
3962
3963 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3964 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
3965 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3966 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3967 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3968 }
3969
3970 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3971 set_sbi_flag(sbi, SBI_NEED_FSCK);
3972
3973
3974 err = f2fs_scan_devices(sbi);
3975 if (err) {
3976 f2fs_err(sbi, "Failed to find devices");
3977 goto free_devices;
3978 }
3979
3980 err = f2fs_init_post_read_wq(sbi);
3981 if (err) {
3982 f2fs_err(sbi, "Failed to initialize post read workqueue");
3983 goto free_devices;
3984 }
3985
3986 sbi->total_valid_node_count =
3987 le32_to_cpu(sbi->ckpt->valid_node_count);
3988 percpu_counter_set(&sbi->total_valid_inode_count,
3989 le32_to_cpu(sbi->ckpt->valid_inode_count));
3990 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3991 sbi->total_valid_block_count =
3992 le64_to_cpu(sbi->ckpt->valid_block_count);
3993 sbi->last_valid_block_count = sbi->total_valid_block_count;
3994 sbi->reserved_blocks = 0;
3995 sbi->current_reserved_blocks = 0;
3996 limit_reserve_root(sbi);
3997 adjust_unusable_cap_perc(sbi);
3998
3999 for (i = 0; i < NR_INODE_TYPE; i++) {
4000 INIT_LIST_HEAD(&sbi->inode_list[i]);
4001 spin_lock_init(&sbi->inode_lock[i]);
4002 }
4003 mutex_init(&sbi->flush_lock);
4004
4005 f2fs_init_extent_cache_info(sbi);
4006
4007 f2fs_init_ino_entry_info(sbi);
4008
4009 f2fs_init_fsync_node_info(sbi);
4010
4011
4012 f2fs_init_ckpt_req_control(sbi);
4013 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
4014 test_opt(sbi, MERGE_CHECKPOINT)) {
4015 err = f2fs_start_ckpt_thread(sbi);
4016 if (err) {
4017 f2fs_err(sbi,
4018 "Failed to start F2FS issue_checkpoint_thread (%d)",
4019 err);
4020 goto stop_ckpt_thread;
4021 }
4022 }
4023
4024
4025 err = f2fs_build_segment_manager(sbi);
4026 if (err) {
4027 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
4028 err);
4029 goto free_sm;
4030 }
4031 err = f2fs_build_node_manager(sbi);
4032 if (err) {
4033 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
4034 err);
4035 goto free_nm;
4036 }
4037
4038
4039 sbi->sectors_written_start = f2fs_get_sectors_written(sbi);
4040
4041
4042 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
4043 if (__exist_node_summaries(sbi))
4044 sbi->kbytes_written =
4045 le64_to_cpu(seg_i->journal->info.kbytes_written);
4046
4047 f2fs_build_gc_manager(sbi);
4048
4049 err = f2fs_build_stats(sbi);
4050 if (err)
4051 goto free_nm;
4052
4053
4054 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
4055 if (IS_ERR(sbi->node_inode)) {
4056 f2fs_err(sbi, "Failed to read node inode");
4057 err = PTR_ERR(sbi->node_inode);
4058 goto free_stats;
4059 }
4060
4061
4062 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
4063 if (IS_ERR(root)) {
4064 f2fs_err(sbi, "Failed to read root inode");
4065 err = PTR_ERR(root);
4066 goto free_node_inode;
4067 }
4068 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
4069 !root->i_size || !root->i_nlink) {
4070 iput(root);
4071 err = -EINVAL;
4072 goto free_node_inode;
4073 }
4074
4075 sb->s_root = d_make_root(root);
4076 if (!sb->s_root) {
4077 err = -ENOMEM;
4078 goto free_node_inode;
4079 }
4080
4081 err = f2fs_init_compress_inode(sbi);
4082 if (err)
4083 goto free_root_inode;
4084
4085 err = f2fs_register_sysfs(sbi);
4086 if (err)
4087 goto free_compress_inode;
4088
4089#ifdef CONFIG_QUOTA
4090
4091 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
4092 err = f2fs_enable_quotas(sb);
4093 if (err)
4094 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
4095 }
4096#endif
4097
4098 err = f2fs_recover_orphan_inodes(sbi);
4099 if (err)
4100 goto free_meta;
4101
4102 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
4103 goto reset_checkpoint;
4104
4105
4106 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
4107 !test_opt(sbi, NORECOVERY)) {
4108
4109
4110
4111
4112 if (f2fs_hw_is_readonly(sbi)) {
4113 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4114 err = f2fs_recover_fsync_data(sbi, true);
4115 if (err > 0) {
4116 err = -EROFS;
4117 f2fs_err(sbi, "Need to recover fsync data, but "
4118 "write access unavailable, please try "
4119 "mount w/ disable_roll_forward or norecovery");
4120 }
4121 if (err < 0)
4122 goto free_meta;
4123 }
4124 f2fs_info(sbi, "write access unavailable, skipping recovery");
4125 goto reset_checkpoint;
4126 }
4127
4128 if (need_fsck)
4129 set_sbi_flag(sbi, SBI_NEED_FSCK);
4130
4131 if (skip_recovery)
4132 goto reset_checkpoint;
4133
4134 err = f2fs_recover_fsync_data(sbi, false);
4135 if (err < 0) {
4136 if (err != -ENOMEM)
4137 skip_recovery = true;
4138 need_fsck = true;
4139 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
4140 err);
4141 goto free_meta;
4142 }
4143 } else {
4144 err = f2fs_recover_fsync_data(sbi, true);
4145
4146 if (!f2fs_readonly(sb) && err > 0) {
4147 err = -EINVAL;
4148 f2fs_err(sbi, "Need to recover fsync data");
4149 goto free_meta;
4150 }
4151 }
4152
4153
4154
4155
4156
4157 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
4158 err = f2fs_check_write_pointer(sbi);
4159 if (err)
4160 goto free_meta;
4161 }
4162
4163reset_checkpoint:
4164 f2fs_init_inmem_curseg(sbi);
4165
4166
4167 clear_sbi_flag(sbi, SBI_POR_DOING);
4168
4169 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
4170 err = f2fs_disable_checkpoint(sbi);
4171 if (err)
4172 goto sync_free_meta;
4173 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
4174 f2fs_enable_checkpoint(sbi);
4175 }
4176
4177
4178
4179
4180
4181 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF ||
4182 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) {
4183
4184 err = f2fs_start_gc_thread(sbi);
4185 if (err)
4186 goto sync_free_meta;
4187 }
4188 kvfree(options);
4189
4190
4191 if (recovery) {
4192 err = f2fs_commit_super(sbi, true);
4193 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
4194 sbi->valid_super_block ? 1 : 2, err);
4195 }
4196
4197 f2fs_join_shrinker(sbi);
4198
4199 f2fs_tuning_parameters(sbi);
4200
4201 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
4202 cur_cp_version(F2FS_CKPT(sbi)));
4203 f2fs_update_time(sbi, CP_TIME);
4204 f2fs_update_time(sbi, REQ_TIME);
4205 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4206 return 0;
4207
4208sync_free_meta:
4209
4210 sync_filesystem(sbi->sb);
4211 retry_cnt = 0;
4212
4213free_meta:
4214#ifdef CONFIG_QUOTA
4215 f2fs_truncate_quota_inode_pages(sb);
4216 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
4217 f2fs_quota_off_umount(sbi->sb);
4218#endif
4219
4220
4221
4222
4223
4224
4225 truncate_inode_pages_final(META_MAPPING(sbi));
4226
4227 evict_inodes(sb);
4228 f2fs_unregister_sysfs(sbi);
4229free_compress_inode:
4230 f2fs_destroy_compress_inode(sbi);
4231free_root_inode:
4232 dput(sb->s_root);
4233 sb->s_root = NULL;
4234free_node_inode:
4235 f2fs_release_ino_entry(sbi, true);
4236 truncate_inode_pages_final(NODE_MAPPING(sbi));
4237 iput(sbi->node_inode);
4238 sbi->node_inode = NULL;
4239free_stats:
4240 f2fs_destroy_stats(sbi);
4241free_nm:
4242 f2fs_destroy_node_manager(sbi);
4243free_sm:
4244 f2fs_destroy_segment_manager(sbi);
4245 f2fs_destroy_post_read_wq(sbi);
4246stop_ckpt_thread:
4247 f2fs_stop_ckpt_thread(sbi);
4248free_devices:
4249 destroy_device_list(sbi);
4250 kvfree(sbi->ckpt);
4251free_meta_inode:
4252 make_bad_inode(sbi->meta_inode);
4253 iput(sbi->meta_inode);
4254 sbi->meta_inode = NULL;
4255free_page_array_cache:
4256 f2fs_destroy_page_array_cache(sbi);
4257free_xattr_cache:
4258 f2fs_destroy_xattr_caches(sbi);
4259free_io_dummy:
4260 mempool_destroy(sbi->write_io_dummy);
4261free_percpu:
4262 destroy_percpu_info(sbi);
4263free_bio_info:
4264 for (i = 0; i < NR_PAGE_TYPE; i++)
4265 kvfree(sbi->write_io[i]);
4266
4267#ifdef CONFIG_UNICODE
4268 utf8_unload(sb->s_encoding);
4269 sb->s_encoding = NULL;
4270#endif
4271free_options:
4272#ifdef CONFIG_QUOTA
4273 for (i = 0; i < MAXQUOTAS; i++)
4274 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4275#endif
4276 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
4277 kvfree(options);
4278free_sb_buf:
4279 kfree(raw_super);
4280free_sbi:
4281 if (sbi->s_chksum_driver)
4282 crypto_free_shash(sbi->s_chksum_driver);
4283 kfree(sbi);
4284
4285
4286 if (retry_cnt > 0 && skip_recovery) {
4287 retry_cnt--;
4288 shrink_dcache_sb(sb);
4289 goto try_onemore;
4290 }
4291 return err;
4292}
4293
4294static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
4295 const char *dev_name, void *data)
4296{
4297 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
4298}
4299
4300static void kill_f2fs_super(struct super_block *sb)
4301{
4302 if (sb->s_root) {
4303 struct f2fs_sb_info *sbi = F2FS_SB(sb);
4304
4305 set_sbi_flag(sbi, SBI_IS_CLOSE);
4306 f2fs_stop_gc_thread(sbi);
4307 f2fs_stop_discard_thread(sbi);
4308
4309#ifdef CONFIG_F2FS_FS_COMPRESSION
4310
4311
4312
4313
4314 if (test_opt(sbi, COMPRESS_CACHE))
4315 truncate_inode_pages_final(COMPRESS_MAPPING(sbi));
4316#endif
4317
4318 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
4319 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4320 struct cp_control cpc = {
4321 .reason = CP_UMOUNT,
4322 };
4323 f2fs_write_checkpoint(sbi, &cpc);
4324 }
4325
4326 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
4327 sb->s_flags &= ~SB_RDONLY;
4328 }
4329 kill_block_super(sb);
4330}
4331
4332static struct file_system_type f2fs_fs_type = {
4333 .owner = THIS_MODULE,
4334 .name = "f2fs",
4335 .mount = f2fs_mount,
4336 .kill_sb = kill_f2fs_super,
4337 .fs_flags = FS_REQUIRES_DEV,
4338};
4339MODULE_ALIAS_FS("f2fs");
4340
4341static int __init init_inodecache(void)
4342{
4343 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
4344 sizeof(struct f2fs_inode_info), 0,
4345 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
4346 if (!f2fs_inode_cachep)
4347 return -ENOMEM;
4348 return 0;
4349}
4350
4351static void destroy_inodecache(void)
4352{
4353
4354
4355
4356
4357 rcu_barrier();
4358 kmem_cache_destroy(f2fs_inode_cachep);
4359}
4360
4361static int __init init_f2fs_fs(void)
4362{
4363 int err;
4364
4365 if (PAGE_SIZE != F2FS_BLKSIZE) {
4366 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
4367 PAGE_SIZE, F2FS_BLKSIZE);
4368 return -EINVAL;
4369 }
4370
4371 err = init_inodecache();
4372 if (err)
4373 goto fail;
4374 err = f2fs_create_node_manager_caches();
4375 if (err)
4376 goto free_inodecache;
4377 err = f2fs_create_segment_manager_caches();
4378 if (err)
4379 goto free_node_manager_caches;
4380 err = f2fs_create_checkpoint_caches();
4381 if (err)
4382 goto free_segment_manager_caches;
4383 err = f2fs_create_recovery_cache();
4384 if (err)
4385 goto free_checkpoint_caches;
4386 err = f2fs_create_extent_cache();
4387 if (err)
4388 goto free_recovery_cache;
4389 err = f2fs_create_garbage_collection_cache();
4390 if (err)
4391 goto free_extent_cache;
4392 err = f2fs_init_sysfs();
4393 if (err)
4394 goto free_garbage_collection_cache;
4395 err = register_shrinker(&f2fs_shrinker_info);
4396 if (err)
4397 goto free_sysfs;
4398 err = register_filesystem(&f2fs_fs_type);
4399 if (err)
4400 goto free_shrinker;
4401 f2fs_create_root_stats();
4402 err = f2fs_init_post_read_processing();
4403 if (err)
4404 goto free_root_stats;
4405 err = f2fs_init_bio_entry_cache();
4406 if (err)
4407 goto free_post_read;
4408 err = f2fs_init_bioset();
4409 if (err)
4410 goto free_bio_enrty_cache;
4411 err = f2fs_init_compress_mempool();
4412 if (err)
4413 goto free_bioset;
4414 err = f2fs_init_compress_cache();
4415 if (err)
4416 goto free_compress_mempool;
4417 err = f2fs_create_casefold_cache();
4418 if (err)
4419 goto free_compress_cache;
4420 return 0;
4421free_compress_cache:
4422 f2fs_destroy_compress_cache();
4423free_compress_mempool:
4424 f2fs_destroy_compress_mempool();
4425free_bioset:
4426 f2fs_destroy_bioset();
4427free_bio_enrty_cache:
4428 f2fs_destroy_bio_entry_cache();
4429free_post_read:
4430 f2fs_destroy_post_read_processing();
4431free_root_stats:
4432 f2fs_destroy_root_stats();
4433 unregister_filesystem(&f2fs_fs_type);
4434free_shrinker:
4435 unregister_shrinker(&f2fs_shrinker_info);
4436free_sysfs:
4437 f2fs_exit_sysfs();
4438free_garbage_collection_cache:
4439 f2fs_destroy_garbage_collection_cache();
4440free_extent_cache:
4441 f2fs_destroy_extent_cache();
4442free_recovery_cache:
4443 f2fs_destroy_recovery_cache();
4444free_checkpoint_caches:
4445 f2fs_destroy_checkpoint_caches();
4446free_segment_manager_caches:
4447 f2fs_destroy_segment_manager_caches();
4448free_node_manager_caches:
4449 f2fs_destroy_node_manager_caches();
4450free_inodecache:
4451 destroy_inodecache();
4452fail:
4453 return err;
4454}
4455
4456static void __exit exit_f2fs_fs(void)
4457{
4458 f2fs_destroy_casefold_cache();
4459 f2fs_destroy_compress_cache();
4460 f2fs_destroy_compress_mempool();
4461 f2fs_destroy_bioset();
4462 f2fs_destroy_bio_entry_cache();
4463 f2fs_destroy_post_read_processing();
4464 f2fs_destroy_root_stats();
4465 unregister_filesystem(&f2fs_fs_type);
4466 unregister_shrinker(&f2fs_shrinker_info);
4467 f2fs_exit_sysfs();
4468 f2fs_destroy_garbage_collection_cache();
4469 f2fs_destroy_extent_cache();
4470 f2fs_destroy_recovery_cache();
4471 f2fs_destroy_checkpoint_caches();
4472 f2fs_destroy_segment_manager_caches();
4473 f2fs_destroy_node_manager_caches();
4474 destroy_inodecache();
4475}
4476
4477module_init(init_f2fs_fs)
4478module_exit(exit_f2fs_fs)
4479
4480MODULE_AUTHOR("Samsung Electronics's Praesto Team");
4481MODULE_DESCRIPTION("Flash Friendly File System");
4482MODULE_LICENSE("GPL");
4483MODULE_SOFTDEP("pre: crc32");
4484
4485
