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f2fs: allocate trace path buffer from names_cache
[linux-block.git] / fs / f2fs / super.c
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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * fs/f2fs/super.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 */
8#include <linux/module.h>
9#include <linux/init.h>
10#include <linux/fs.h>
11#include <linux/fs_context.h>
12#include <linux/sched/mm.h>
13#include <linux/statfs.h>
14#include <linux/buffer_head.h>
15#include <linux/kthread.h>
16#include <linux/parser.h>
17#include <linux/mount.h>
18#include <linux/seq_file.h>
19#include <linux/proc_fs.h>
20#include <linux/random.h>
21#include <linux/exportfs.h>
22#include <linux/blkdev.h>
23#include <linux/quotaops.h>
24#include <linux/f2fs_fs.h>
25#include <linux/sysfs.h>
26#include <linux/quota.h>
27#include <linux/unicode.h>
28#include <linux/part_stat.h>
29#include <linux/zstd.h>
30#include <linux/lz4.h>
31
32#include "f2fs.h"
33#include "node.h"
34#include "segment.h"
35#include "xattr.h"
36#include "gc.h"
37#include "iostat.h"
38
39#define CREATE_TRACE_POINTS
40#include <trace/events/f2fs.h>
41
42static struct kmem_cache *f2fs_inode_cachep;
43
44#ifdef CONFIG_F2FS_FAULT_INJECTION
45
46const char *f2fs_fault_name[FAULT_MAX] = {
47 [FAULT_KMALLOC] = "kmalloc",
48 [FAULT_KVMALLOC] = "kvmalloc",
49 [FAULT_PAGE_ALLOC] = "page alloc",
50 [FAULT_PAGE_GET] = "page get",
51 [FAULT_ALLOC_NID] = "alloc nid",
52 [FAULT_ORPHAN] = "orphan",
53 [FAULT_BLOCK] = "no more block",
54 [FAULT_DIR_DEPTH] = "too big dir depth",
55 [FAULT_EVICT_INODE] = "evict_inode fail",
56 [FAULT_TRUNCATE] = "truncate fail",
57 [FAULT_READ_IO] = "read IO error",
58 [FAULT_CHECKPOINT] = "checkpoint error",
59 [FAULT_DISCARD] = "discard error",
60 [FAULT_WRITE_IO] = "write IO error",
61 [FAULT_SLAB_ALLOC] = "slab alloc",
62 [FAULT_DQUOT_INIT] = "dquot initialize",
63 [FAULT_LOCK_OP] = "lock_op",
64 [FAULT_BLKADDR] = "invalid blkaddr",
65};
66
67void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
68 unsigned int type)
69{
70 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
71
72 if (rate) {
73 atomic_set(&ffi->inject_ops, 0);
74 ffi->inject_rate = rate;
75 }
76
77 if (type)
78 ffi->inject_type = type;
79
80 if (!rate && !type)
81 memset(ffi, 0, sizeof(struct f2fs_fault_info));
82}
83#endif
84
85/* f2fs-wide shrinker description */
86static struct shrinker f2fs_shrinker_info = {
87 .scan_objects = f2fs_shrink_scan,
88 .count_objects = f2fs_shrink_count,
89 .seeks = DEFAULT_SEEKS,
90};
91
92enum {
93 Opt_gc_background,
94 Opt_disable_roll_forward,
95 Opt_norecovery,
96 Opt_discard,
97 Opt_nodiscard,
98 Opt_noheap,
99 Opt_heap,
100 Opt_user_xattr,
101 Opt_nouser_xattr,
102 Opt_acl,
103 Opt_noacl,
104 Opt_active_logs,
105 Opt_disable_ext_identify,
106 Opt_inline_xattr,
107 Opt_noinline_xattr,
108 Opt_inline_xattr_size,
109 Opt_inline_data,
110 Opt_inline_dentry,
111 Opt_noinline_dentry,
112 Opt_flush_merge,
113 Opt_noflush_merge,
114 Opt_barrier,
115 Opt_nobarrier,
116 Opt_fastboot,
117 Opt_extent_cache,
118 Opt_noextent_cache,
119 Opt_noinline_data,
120 Opt_data_flush,
121 Opt_reserve_root,
122 Opt_resgid,
123 Opt_resuid,
124 Opt_mode,
125 Opt_io_size_bits,
126 Opt_fault_injection,
127 Opt_fault_type,
128 Opt_lazytime,
129 Opt_nolazytime,
130 Opt_quota,
131 Opt_noquota,
132 Opt_usrquota,
133 Opt_grpquota,
134 Opt_prjquota,
135 Opt_usrjquota,
136 Opt_grpjquota,
137 Opt_prjjquota,
138 Opt_offusrjquota,
139 Opt_offgrpjquota,
140 Opt_offprjjquota,
141 Opt_jqfmt_vfsold,
142 Opt_jqfmt_vfsv0,
143 Opt_jqfmt_vfsv1,
144 Opt_alloc,
145 Opt_fsync,
146 Opt_test_dummy_encryption,
147 Opt_inlinecrypt,
148 Opt_checkpoint_disable,
149 Opt_checkpoint_disable_cap,
150 Opt_checkpoint_disable_cap_perc,
151 Opt_checkpoint_enable,
152 Opt_checkpoint_merge,
153 Opt_nocheckpoint_merge,
154 Opt_compress_algorithm,
155 Opt_compress_log_size,
156 Opt_compress_extension,
157 Opt_nocompress_extension,
158 Opt_compress_chksum,
159 Opt_compress_mode,
160 Opt_compress_cache,
161 Opt_atgc,
162 Opt_gc_merge,
163 Opt_nogc_merge,
164 Opt_discard_unit,
165 Opt_memory_mode,
166 Opt_age_extent_cache,
167 Opt_err,
168};
169
170static match_table_t f2fs_tokens = {
171 {Opt_gc_background, "background_gc=%s"},
172 {Opt_disable_roll_forward, "disable_roll_forward"},
173 {Opt_norecovery, "norecovery"},
174 {Opt_discard, "discard"},
175 {Opt_nodiscard, "nodiscard"},
176 {Opt_noheap, "no_heap"},
177 {Opt_heap, "heap"},
178 {Opt_user_xattr, "user_xattr"},
179 {Opt_nouser_xattr, "nouser_xattr"},
180 {Opt_acl, "acl"},
181 {Opt_noacl, "noacl"},
182 {Opt_active_logs, "active_logs=%u"},
183 {Opt_disable_ext_identify, "disable_ext_identify"},
184 {Opt_inline_xattr, "inline_xattr"},
185 {Opt_noinline_xattr, "noinline_xattr"},
186 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
187 {Opt_inline_data, "inline_data"},
188 {Opt_inline_dentry, "inline_dentry"},
189 {Opt_noinline_dentry, "noinline_dentry"},
190 {Opt_flush_merge, "flush_merge"},
191 {Opt_noflush_merge, "noflush_merge"},
192 {Opt_barrier, "barrier"},
193 {Opt_nobarrier, "nobarrier"},
194 {Opt_fastboot, "fastboot"},
195 {Opt_extent_cache, "extent_cache"},
196 {Opt_noextent_cache, "noextent_cache"},
197 {Opt_noinline_data, "noinline_data"},
198 {Opt_data_flush, "data_flush"},
199 {Opt_reserve_root, "reserve_root=%u"},
200 {Opt_resgid, "resgid=%u"},
201 {Opt_resuid, "resuid=%u"},
202 {Opt_mode, "mode=%s"},
203 {Opt_io_size_bits, "io_bits=%u"},
204 {Opt_fault_injection, "fault_injection=%u"},
205 {Opt_fault_type, "fault_type=%u"},
206 {Opt_lazytime, "lazytime"},
207 {Opt_nolazytime, "nolazytime"},
208 {Opt_quota, "quota"},
209 {Opt_noquota, "noquota"},
210 {Opt_usrquota, "usrquota"},
211 {Opt_grpquota, "grpquota"},
212 {Opt_prjquota, "prjquota"},
213 {Opt_usrjquota, "usrjquota=%s"},
214 {Opt_grpjquota, "grpjquota=%s"},
215 {Opt_prjjquota, "prjjquota=%s"},
216 {Opt_offusrjquota, "usrjquota="},
217 {Opt_offgrpjquota, "grpjquota="},
218 {Opt_offprjjquota, "prjjquota="},
219 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
220 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
221 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
222 {Opt_alloc, "alloc_mode=%s"},
223 {Opt_fsync, "fsync_mode=%s"},
224 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
225 {Opt_test_dummy_encryption, "test_dummy_encryption"},
226 {Opt_inlinecrypt, "inlinecrypt"},
227 {Opt_checkpoint_disable, "checkpoint=disable"},
228 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
229 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
230 {Opt_checkpoint_enable, "checkpoint=enable"},
231 {Opt_checkpoint_merge, "checkpoint_merge"},
232 {Opt_nocheckpoint_merge, "nocheckpoint_merge"},
233 {Opt_compress_algorithm, "compress_algorithm=%s"},
234 {Opt_compress_log_size, "compress_log_size=%u"},
235 {Opt_compress_extension, "compress_extension=%s"},
236 {Opt_nocompress_extension, "nocompress_extension=%s"},
237 {Opt_compress_chksum, "compress_chksum"},
238 {Opt_compress_mode, "compress_mode=%s"},
239 {Opt_compress_cache, "compress_cache"},
240 {Opt_atgc, "atgc"},
241 {Opt_gc_merge, "gc_merge"},
242 {Opt_nogc_merge, "nogc_merge"},
243 {Opt_discard_unit, "discard_unit=%s"},
244 {Opt_memory_mode, "memory=%s"},
245 {Opt_age_extent_cache, "age_extent_cache"},
246 {Opt_err, NULL},
247};
248
249void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
250{
251 struct va_format vaf;
252 va_list args;
253 int level;
254
255 va_start(args, fmt);
256
257 level = printk_get_level(fmt);
258 vaf.fmt = printk_skip_level(fmt);
259 vaf.va = &args;
260 printk("%c%cF2FS-fs (%s): %pV\n",
261 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
262
263 va_end(args);
264}
265
266#if IS_ENABLED(CONFIG_UNICODE)
267static const struct f2fs_sb_encodings {
268 __u16 magic;
269 char *name;
270 unsigned int version;
271} f2fs_sb_encoding_map[] = {
272 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)},
273};
274
275static const struct f2fs_sb_encodings *
276f2fs_sb_read_encoding(const struct f2fs_super_block *sb)
277{
278 __u16 magic = le16_to_cpu(sb->s_encoding);
279 int i;
280
281 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
282 if (magic == f2fs_sb_encoding_map[i].magic)
283 return &f2fs_sb_encoding_map[i];
284
285 return NULL;
286}
287
288struct kmem_cache *f2fs_cf_name_slab;
289static int __init f2fs_create_casefold_cache(void)
290{
291 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name",
292 F2FS_NAME_LEN);
293 return f2fs_cf_name_slab ? 0 : -ENOMEM;
294}
295
296static void f2fs_destroy_casefold_cache(void)
297{
298 kmem_cache_destroy(f2fs_cf_name_slab);
299}
300#else
301static int __init f2fs_create_casefold_cache(void) { return 0; }
302static void f2fs_destroy_casefold_cache(void) { }
303#endif
304
305static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
306{
307 block_t limit = min((sbi->user_block_count >> 3),
308 sbi->user_block_count - sbi->reserved_blocks);
309
310 /* limit is 12.5% */
311 if (test_opt(sbi, RESERVE_ROOT) &&
312 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
313 F2FS_OPTION(sbi).root_reserved_blocks = limit;
314 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
315 F2FS_OPTION(sbi).root_reserved_blocks);
316 }
317 if (!test_opt(sbi, RESERVE_ROOT) &&
318 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
319 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
320 !gid_eq(F2FS_OPTION(sbi).s_resgid,
321 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
322 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
323 from_kuid_munged(&init_user_ns,
324 F2FS_OPTION(sbi).s_resuid),
325 from_kgid_munged(&init_user_ns,
326 F2FS_OPTION(sbi).s_resgid));
327}
328
329static inline int adjust_reserved_segment(struct f2fs_sb_info *sbi)
330{
331 unsigned int sec_blks = sbi->blocks_per_seg * sbi->segs_per_sec;
332 unsigned int avg_vblocks;
333 unsigned int wanted_reserved_segments;
334 block_t avail_user_block_count;
335
336 if (!F2FS_IO_ALIGNED(sbi))
337 return 0;
338
339 /* average valid block count in section in worst case */
340 avg_vblocks = sec_blks / F2FS_IO_SIZE(sbi);
341
342 /*
343 * we need enough free space when migrating one section in worst case
344 */
345 wanted_reserved_segments = (F2FS_IO_SIZE(sbi) / avg_vblocks) *
346 reserved_segments(sbi);
347 wanted_reserved_segments -= reserved_segments(sbi);
348
349 avail_user_block_count = sbi->user_block_count -
350 sbi->current_reserved_blocks -
351 F2FS_OPTION(sbi).root_reserved_blocks;
352
353 if (wanted_reserved_segments * sbi->blocks_per_seg >
354 avail_user_block_count) {
355 f2fs_err(sbi, "IO align feature can't grab additional reserved segment: %u, available segments: %u",
356 wanted_reserved_segments,
357 avail_user_block_count >> sbi->log_blocks_per_seg);
358 return -ENOSPC;
359 }
360
361 SM_I(sbi)->additional_reserved_segments = wanted_reserved_segments;
362
363 f2fs_info(sbi, "IO align feature needs additional reserved segment: %u",
364 wanted_reserved_segments);
365
366 return 0;
367}
368
369static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
370{
371 if (!F2FS_OPTION(sbi).unusable_cap_perc)
372 return;
373
374 if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
375 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
376 else
377 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
378 F2FS_OPTION(sbi).unusable_cap_perc;
379
380 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
381 F2FS_OPTION(sbi).unusable_cap,
382 F2FS_OPTION(sbi).unusable_cap_perc);
383}
384
385static void init_once(void *foo)
386{
387 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
388
389 inode_init_once(&fi->vfs_inode);
390}
391
392#ifdef CONFIG_QUOTA
393static const char * const quotatypes[] = INITQFNAMES;
394#define QTYPE2NAME(t) (quotatypes[t])
395static int f2fs_set_qf_name(struct super_block *sb, int qtype,
396 substring_t *args)
397{
398 struct f2fs_sb_info *sbi = F2FS_SB(sb);
399 char *qname;
400 int ret = -EINVAL;
401
402 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
403 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
404 return -EINVAL;
405 }
406 if (f2fs_sb_has_quota_ino(sbi)) {
407 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
408 return 0;
409 }
410
411 qname = match_strdup(args);
412 if (!qname) {
413 f2fs_err(sbi, "Not enough memory for storing quotafile name");
414 return -ENOMEM;
415 }
416 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
417 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
418 ret = 0;
419 else
420 f2fs_err(sbi, "%s quota file already specified",
421 QTYPE2NAME(qtype));
422 goto errout;
423 }
424 if (strchr(qname, '/')) {
425 f2fs_err(sbi, "quotafile must be on filesystem root");
426 goto errout;
427 }
428 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
429 set_opt(sbi, QUOTA);
430 return 0;
431errout:
432 kfree(qname);
433 return ret;
434}
435
436static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
437{
438 struct f2fs_sb_info *sbi = F2FS_SB(sb);
439
440 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
441 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
442 return -EINVAL;
443 }
444 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
445 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
446 return 0;
447}
448
449static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
450{
451 /*
452 * We do the test below only for project quotas. 'usrquota' and
453 * 'grpquota' mount options are allowed even without quota feature
454 * to support legacy quotas in quota files.
455 */
456 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
457 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
458 return -1;
459 }
460 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
461 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
462 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
463 if (test_opt(sbi, USRQUOTA) &&
464 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
465 clear_opt(sbi, USRQUOTA);
466
467 if (test_opt(sbi, GRPQUOTA) &&
468 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
469 clear_opt(sbi, GRPQUOTA);
470
471 if (test_opt(sbi, PRJQUOTA) &&
472 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
473 clear_opt(sbi, PRJQUOTA);
474
475 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
476 test_opt(sbi, PRJQUOTA)) {
477 f2fs_err(sbi, "old and new quota format mixing");
478 return -1;
479 }
480
481 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
482 f2fs_err(sbi, "journaled quota format not specified");
483 return -1;
484 }
485 }
486
487 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
488 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
489 F2FS_OPTION(sbi).s_jquota_fmt = 0;
490 }
491 return 0;
492}
493#endif
494
495static int f2fs_set_test_dummy_encryption(struct super_block *sb,
496 const char *opt,
497 const substring_t *arg,
498 bool is_remount)
499{
500 struct f2fs_sb_info *sbi = F2FS_SB(sb);
501 struct fs_parameter param = {
502 .type = fs_value_is_string,
503 .string = arg->from ? arg->from : "",
504 };
505 struct fscrypt_dummy_policy *policy =
506 &F2FS_OPTION(sbi).dummy_enc_policy;
507 int err;
508
509 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) {
510 f2fs_warn(sbi, "test_dummy_encryption option not supported");
511 return -EINVAL;
512 }
513
514 if (!f2fs_sb_has_encrypt(sbi)) {
515 f2fs_err(sbi, "Encrypt feature is off");
516 return -EINVAL;
517 }
518
519 /*
520 * This mount option is just for testing, and it's not worthwhile to
521 * implement the extra complexity (e.g. RCU protection) that would be
522 * needed to allow it to be set or changed during remount. We do allow
523 * it to be specified during remount, but only if there is no change.
524 */
525 if (is_remount && !fscrypt_is_dummy_policy_set(policy)) {
526 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
527 return -EINVAL;
528 }
529
530 err = fscrypt_parse_test_dummy_encryption(&param, policy);
531 if (err) {
532 if (err == -EEXIST)
533 f2fs_warn(sbi,
534 "Can't change test_dummy_encryption on remount");
535 else if (err == -EINVAL)
536 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
537 opt);
538 else
539 f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
540 opt, err);
541 return -EINVAL;
542 }
543 f2fs_warn(sbi, "Test dummy encryption mode enabled");
544 return 0;
545}
546
547#ifdef CONFIG_F2FS_FS_COMPRESSION
548/*
549 * 1. The same extension name cannot not appear in both compress and non-compress extension
550 * at the same time.
551 * 2. If the compress extension specifies all files, the types specified by the non-compress
552 * extension will be treated as special cases and will not be compressed.
553 * 3. Don't allow the non-compress extension specifies all files.
554 */
555static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi)
556{
557 unsigned char (*ext)[F2FS_EXTENSION_LEN];
558 unsigned char (*noext)[F2FS_EXTENSION_LEN];
559 int ext_cnt, noext_cnt, index = 0, no_index = 0;
560
561 ext = F2FS_OPTION(sbi).extensions;
562 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
563 noext = F2FS_OPTION(sbi).noextensions;
564 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
565
566 if (!noext_cnt)
567 return 0;
568
569 for (no_index = 0; no_index < noext_cnt; no_index++) {
570 if (!strcasecmp("*", noext[no_index])) {
571 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files");
572 return -EINVAL;
573 }
574 for (index = 0; index < ext_cnt; index++) {
575 if (!strcasecmp(ext[index], noext[no_index])) {
576 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension",
577 ext[index]);
578 return -EINVAL;
579 }
580 }
581 }
582 return 0;
583}
584
585#ifdef CONFIG_F2FS_FS_LZ4
586static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
587{
588#ifdef CONFIG_F2FS_FS_LZ4HC
589 unsigned int level;
590#endif
591
592 if (strlen(str) == 3) {
593 F2FS_OPTION(sbi).compress_level = 0;
594 return 0;
595 }
596
597#ifdef CONFIG_F2FS_FS_LZ4HC
598 str += 3;
599
600 if (str[0] != ':') {
601 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
602 return -EINVAL;
603 }
604 if (kstrtouint(str + 1, 10, &level))
605 return -EINVAL;
606
607 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
608 f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
609 return -EINVAL;
610 }
611
612 F2FS_OPTION(sbi).compress_level = level;
613 return 0;
614#else
615 f2fs_info(sbi, "kernel doesn't support lz4hc compression");
616 return -EINVAL;
617#endif
618}
619#endif
620
621#ifdef CONFIG_F2FS_FS_ZSTD
622static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
623{
624 unsigned int level;
625 int len = 4;
626
627 if (strlen(str) == len) {
628 F2FS_OPTION(sbi).compress_level = 0;
629 return 0;
630 }
631
632 str += len;
633
634 if (str[0] != ':') {
635 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
636 return -EINVAL;
637 }
638 if (kstrtouint(str + 1, 10, &level))
639 return -EINVAL;
640
641 if (!level || level > zstd_max_clevel()) {
642 f2fs_info(sbi, "invalid zstd compress level: %d", level);
643 return -EINVAL;
644 }
645
646 F2FS_OPTION(sbi).compress_level = level;
647 return 0;
648}
649#endif
650#endif
651
652static int parse_options(struct super_block *sb, char *options, bool is_remount)
653{
654 struct f2fs_sb_info *sbi = F2FS_SB(sb);
655 substring_t args[MAX_OPT_ARGS];
656#ifdef CONFIG_F2FS_FS_COMPRESSION
657 unsigned char (*ext)[F2FS_EXTENSION_LEN];
658 unsigned char (*noext)[F2FS_EXTENSION_LEN];
659 int ext_cnt, noext_cnt;
660#endif
661 char *p, *name;
662 int arg = 0;
663 kuid_t uid;
664 kgid_t gid;
665 int ret;
666
667 if (!options)
668 goto default_check;
669
670 while ((p = strsep(&options, ",")) != NULL) {
671 int token;
672
673 if (!*p)
674 continue;
675 /*
676 * Initialize args struct so we know whether arg was
677 * found; some options take optional arguments.
678 */
679 args[0].to = args[0].from = NULL;
680 token = match_token(p, f2fs_tokens, args);
681
682 switch (token) {
683 case Opt_gc_background:
684 name = match_strdup(&args[0]);
685
686 if (!name)
687 return -ENOMEM;
688 if (!strcmp(name, "on")) {
689 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
690 } else if (!strcmp(name, "off")) {
691 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
692 } else if (!strcmp(name, "sync")) {
693 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
694 } else {
695 kfree(name);
696 return -EINVAL;
697 }
698 kfree(name);
699 break;
700 case Opt_disable_roll_forward:
701 set_opt(sbi, DISABLE_ROLL_FORWARD);
702 break;
703 case Opt_norecovery:
704 /* this option mounts f2fs with ro */
705 set_opt(sbi, NORECOVERY);
706 if (!f2fs_readonly(sb))
707 return -EINVAL;
708 break;
709 case Opt_discard:
710 if (!f2fs_hw_support_discard(sbi)) {
711 f2fs_warn(sbi, "device does not support discard");
712 break;
713 }
714 set_opt(sbi, DISCARD);
715 break;
716 case Opt_nodiscard:
717 if (f2fs_hw_should_discard(sbi)) {
718 f2fs_warn(sbi, "discard is required for zoned block devices");
719 return -EINVAL;
720 }
721 clear_opt(sbi, DISCARD);
722 break;
723 case Opt_noheap:
724 set_opt(sbi, NOHEAP);
725 break;
726 case Opt_heap:
727 clear_opt(sbi, NOHEAP);
728 break;
729#ifdef CONFIG_F2FS_FS_XATTR
730 case Opt_user_xattr:
731 set_opt(sbi, XATTR_USER);
732 break;
733 case Opt_nouser_xattr:
734 clear_opt(sbi, XATTR_USER);
735 break;
736 case Opt_inline_xattr:
737 set_opt(sbi, INLINE_XATTR);
738 break;
739 case Opt_noinline_xattr:
740 clear_opt(sbi, INLINE_XATTR);
741 break;
742 case Opt_inline_xattr_size:
743 if (args->from && match_int(args, &arg))
744 return -EINVAL;
745 set_opt(sbi, INLINE_XATTR_SIZE);
746 F2FS_OPTION(sbi).inline_xattr_size = arg;
747 break;
748#else
749 case Opt_user_xattr:
750 f2fs_info(sbi, "user_xattr options not supported");
751 break;
752 case Opt_nouser_xattr:
753 f2fs_info(sbi, "nouser_xattr options not supported");
754 break;
755 case Opt_inline_xattr:
756 f2fs_info(sbi, "inline_xattr options not supported");
757 break;
758 case Opt_noinline_xattr:
759 f2fs_info(sbi, "noinline_xattr options not supported");
760 break;
761#endif
762#ifdef CONFIG_F2FS_FS_POSIX_ACL
763 case Opt_acl:
764 set_opt(sbi, POSIX_ACL);
765 break;
766 case Opt_noacl:
767 clear_opt(sbi, POSIX_ACL);
768 break;
769#else
770 case Opt_acl:
771 f2fs_info(sbi, "acl options not supported");
772 break;
773 case Opt_noacl:
774 f2fs_info(sbi, "noacl options not supported");
775 break;
776#endif
777 case Opt_active_logs:
778 if (args->from && match_int(args, &arg))
779 return -EINVAL;
780 if (arg != 2 && arg != 4 &&
781 arg != NR_CURSEG_PERSIST_TYPE)
782 return -EINVAL;
783 F2FS_OPTION(sbi).active_logs = arg;
784 break;
785 case Opt_disable_ext_identify:
786 set_opt(sbi, DISABLE_EXT_IDENTIFY);
787 break;
788 case Opt_inline_data:
789 set_opt(sbi, INLINE_DATA);
790 break;
791 case Opt_inline_dentry:
792 set_opt(sbi, INLINE_DENTRY);
793 break;
794 case Opt_noinline_dentry:
795 clear_opt(sbi, INLINE_DENTRY);
796 break;
797 case Opt_flush_merge:
798 set_opt(sbi, FLUSH_MERGE);
799 break;
800 case Opt_noflush_merge:
801 clear_opt(sbi, FLUSH_MERGE);
802 break;
803 case Opt_nobarrier:
804 set_opt(sbi, NOBARRIER);
805 break;
806 case Opt_barrier:
807 clear_opt(sbi, NOBARRIER);
808 break;
809 case Opt_fastboot:
810 set_opt(sbi, FASTBOOT);
811 break;
812 case Opt_extent_cache:
813 set_opt(sbi, READ_EXTENT_CACHE);
814 break;
815 case Opt_noextent_cache:
816 clear_opt(sbi, READ_EXTENT_CACHE);
817 break;
818 case Opt_noinline_data:
819 clear_opt(sbi, INLINE_DATA);
820 break;
821 case Opt_data_flush:
822 set_opt(sbi, DATA_FLUSH);
823 break;
824 case Opt_reserve_root:
825 if (args->from && match_int(args, &arg))
826 return -EINVAL;
827 if (test_opt(sbi, RESERVE_ROOT)) {
828 f2fs_info(sbi, "Preserve previous reserve_root=%u",
829 F2FS_OPTION(sbi).root_reserved_blocks);
830 } else {
831 F2FS_OPTION(sbi).root_reserved_blocks = arg;
832 set_opt(sbi, RESERVE_ROOT);
833 }
834 break;
835 case Opt_resuid:
836 if (args->from && match_int(args, &arg))
837 return -EINVAL;
838 uid = make_kuid(current_user_ns(), arg);
839 if (!uid_valid(uid)) {
840 f2fs_err(sbi, "Invalid uid value %d", arg);
841 return -EINVAL;
842 }
843 F2FS_OPTION(sbi).s_resuid = uid;
844 break;
845 case Opt_resgid:
846 if (args->from && match_int(args, &arg))
847 return -EINVAL;
848 gid = make_kgid(current_user_ns(), arg);
849 if (!gid_valid(gid)) {
850 f2fs_err(sbi, "Invalid gid value %d", arg);
851 return -EINVAL;
852 }
853 F2FS_OPTION(sbi).s_resgid = gid;
854 break;
855 case Opt_mode:
856 name = match_strdup(&args[0]);
857
858 if (!name)
859 return -ENOMEM;
860 if (!strcmp(name, "adaptive")) {
861 if (f2fs_sb_has_blkzoned(sbi)) {
862 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
863 kfree(name);
864 return -EINVAL;
865 }
866 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
867 } else if (!strcmp(name, "lfs")) {
868 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
869 } else if (!strcmp(name, "fragment:segment")) {
870 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG;
871 } else if (!strcmp(name, "fragment:block")) {
872 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK;
873 } else {
874 kfree(name);
875 return -EINVAL;
876 }
877 kfree(name);
878 break;
879 case Opt_io_size_bits:
880 if (args->from && match_int(args, &arg))
881 return -EINVAL;
882 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) {
883 f2fs_warn(sbi, "Not support %ld, larger than %d",
884 BIT(arg), BIO_MAX_VECS);
885 return -EINVAL;
886 }
887 F2FS_OPTION(sbi).write_io_size_bits = arg;
888 break;
889#ifdef CONFIG_F2FS_FAULT_INJECTION
890 case Opt_fault_injection:
891 if (args->from && match_int(args, &arg))
892 return -EINVAL;
893 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
894 set_opt(sbi, FAULT_INJECTION);
895 break;
896
897 case Opt_fault_type:
898 if (args->from && match_int(args, &arg))
899 return -EINVAL;
900 f2fs_build_fault_attr(sbi, 0, arg);
901 set_opt(sbi, FAULT_INJECTION);
902 break;
903#else
904 case Opt_fault_injection:
905 f2fs_info(sbi, "fault_injection options not supported");
906 break;
907
908 case Opt_fault_type:
909 f2fs_info(sbi, "fault_type options not supported");
910 break;
911#endif
912 case Opt_lazytime:
913 sb->s_flags |= SB_LAZYTIME;
914 break;
915 case Opt_nolazytime:
916 sb->s_flags &= ~SB_LAZYTIME;
917 break;
918#ifdef CONFIG_QUOTA
919 case Opt_quota:
920 case Opt_usrquota:
921 set_opt(sbi, USRQUOTA);
922 break;
923 case Opt_grpquota:
924 set_opt(sbi, GRPQUOTA);
925 break;
926 case Opt_prjquota:
927 set_opt(sbi, PRJQUOTA);
928 break;
929 case Opt_usrjquota:
930 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
931 if (ret)
932 return ret;
933 break;
934 case Opt_grpjquota:
935 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
936 if (ret)
937 return ret;
938 break;
939 case Opt_prjjquota:
940 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
941 if (ret)
942 return ret;
943 break;
944 case Opt_offusrjquota:
945 ret = f2fs_clear_qf_name(sb, USRQUOTA);
946 if (ret)
947 return ret;
948 break;
949 case Opt_offgrpjquota:
950 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
951 if (ret)
952 return ret;
953 break;
954 case Opt_offprjjquota:
955 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
956 if (ret)
957 return ret;
958 break;
959 case Opt_jqfmt_vfsold:
960 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
961 break;
962 case Opt_jqfmt_vfsv0:
963 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
964 break;
965 case Opt_jqfmt_vfsv1:
966 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
967 break;
968 case Opt_noquota:
969 clear_opt(sbi, QUOTA);
970 clear_opt(sbi, USRQUOTA);
971 clear_opt(sbi, GRPQUOTA);
972 clear_opt(sbi, PRJQUOTA);
973 break;
974#else
975 case Opt_quota:
976 case Opt_usrquota:
977 case Opt_grpquota:
978 case Opt_prjquota:
979 case Opt_usrjquota:
980 case Opt_grpjquota:
981 case Opt_prjjquota:
982 case Opt_offusrjquota:
983 case Opt_offgrpjquota:
984 case Opt_offprjjquota:
985 case Opt_jqfmt_vfsold:
986 case Opt_jqfmt_vfsv0:
987 case Opt_jqfmt_vfsv1:
988 case Opt_noquota:
989 f2fs_info(sbi, "quota operations not supported");
990 break;
991#endif
992 case Opt_alloc:
993 name = match_strdup(&args[0]);
994 if (!name)
995 return -ENOMEM;
996
997 if (!strcmp(name, "default")) {
998 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
999 } else if (!strcmp(name, "reuse")) {
1000 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
1001 } else {
1002 kfree(name);
1003 return -EINVAL;
1004 }
1005 kfree(name);
1006 break;
1007 case Opt_fsync:
1008 name = match_strdup(&args[0]);
1009 if (!name)
1010 return -ENOMEM;
1011 if (!strcmp(name, "posix")) {
1012 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
1013 } else if (!strcmp(name, "strict")) {
1014 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
1015 } else if (!strcmp(name, "nobarrier")) {
1016 F2FS_OPTION(sbi).fsync_mode =
1017 FSYNC_MODE_NOBARRIER;
1018 } else {
1019 kfree(name);
1020 return -EINVAL;
1021 }
1022 kfree(name);
1023 break;
1024 case Opt_test_dummy_encryption:
1025 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
1026 is_remount);
1027 if (ret)
1028 return ret;
1029 break;
1030 case Opt_inlinecrypt:
1031#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
1032 sb->s_flags |= SB_INLINECRYPT;
1033#else
1034 f2fs_info(sbi, "inline encryption not supported");
1035#endif
1036 break;
1037 case Opt_checkpoint_disable_cap_perc:
1038 if (args->from && match_int(args, &arg))
1039 return -EINVAL;
1040 if (arg < 0 || arg > 100)
1041 return -EINVAL;
1042 F2FS_OPTION(sbi).unusable_cap_perc = arg;
1043 set_opt(sbi, DISABLE_CHECKPOINT);
1044 break;
1045 case Opt_checkpoint_disable_cap:
1046 if (args->from && match_int(args, &arg))
1047 return -EINVAL;
1048 F2FS_OPTION(sbi).unusable_cap = arg;
1049 set_opt(sbi, DISABLE_CHECKPOINT);
1050 break;
1051 case Opt_checkpoint_disable:
1052 set_opt(sbi, DISABLE_CHECKPOINT);
1053 break;
1054 case Opt_checkpoint_enable:
1055 clear_opt(sbi, DISABLE_CHECKPOINT);
1056 break;
1057 case Opt_checkpoint_merge:
1058 set_opt(sbi, MERGE_CHECKPOINT);
1059 break;
1060 case Opt_nocheckpoint_merge:
1061 clear_opt(sbi, MERGE_CHECKPOINT);
1062 break;
1063#ifdef CONFIG_F2FS_FS_COMPRESSION
1064 case Opt_compress_algorithm:
1065 if (!f2fs_sb_has_compression(sbi)) {
1066 f2fs_info(sbi, "Image doesn't support compression");
1067 break;
1068 }
1069 name = match_strdup(&args[0]);
1070 if (!name)
1071 return -ENOMEM;
1072 if (!strcmp(name, "lzo")) {
1073#ifdef CONFIG_F2FS_FS_LZO
1074 F2FS_OPTION(sbi).compress_level = 0;
1075 F2FS_OPTION(sbi).compress_algorithm =
1076 COMPRESS_LZO;
1077#else
1078 f2fs_info(sbi, "kernel doesn't support lzo compression");
1079#endif
1080 } else if (!strncmp(name, "lz4", 3)) {
1081#ifdef CONFIG_F2FS_FS_LZ4
1082 ret = f2fs_set_lz4hc_level(sbi, name);
1083 if (ret) {
1084 kfree(name);
1085 return -EINVAL;
1086 }
1087 F2FS_OPTION(sbi).compress_algorithm =
1088 COMPRESS_LZ4;
1089#else
1090 f2fs_info(sbi, "kernel doesn't support lz4 compression");
1091#endif
1092 } else if (!strncmp(name, "zstd", 4)) {
1093#ifdef CONFIG_F2FS_FS_ZSTD
1094 ret = f2fs_set_zstd_level(sbi, name);
1095 if (ret) {
1096 kfree(name);
1097 return -EINVAL;
1098 }
1099 F2FS_OPTION(sbi).compress_algorithm =
1100 COMPRESS_ZSTD;
1101#else
1102 f2fs_info(sbi, "kernel doesn't support zstd compression");
1103#endif
1104 } else if (!strcmp(name, "lzo-rle")) {
1105#ifdef CONFIG_F2FS_FS_LZORLE
1106 F2FS_OPTION(sbi).compress_level = 0;
1107 F2FS_OPTION(sbi).compress_algorithm =
1108 COMPRESS_LZORLE;
1109#else
1110 f2fs_info(sbi, "kernel doesn't support lzorle compression");
1111#endif
1112 } else {
1113 kfree(name);
1114 return -EINVAL;
1115 }
1116 kfree(name);
1117 break;
1118 case Opt_compress_log_size:
1119 if (!f2fs_sb_has_compression(sbi)) {
1120 f2fs_info(sbi, "Image doesn't support compression");
1121 break;
1122 }
1123 if (args->from && match_int(args, &arg))
1124 return -EINVAL;
1125 if (arg < MIN_COMPRESS_LOG_SIZE ||
1126 arg > MAX_COMPRESS_LOG_SIZE) {
1127 f2fs_err(sbi,
1128 "Compress cluster log size is out of range");
1129 return -EINVAL;
1130 }
1131 F2FS_OPTION(sbi).compress_log_size = arg;
1132 break;
1133 case Opt_compress_extension:
1134 if (!f2fs_sb_has_compression(sbi)) {
1135 f2fs_info(sbi, "Image doesn't support compression");
1136 break;
1137 }
1138 name = match_strdup(&args[0]);
1139 if (!name)
1140 return -ENOMEM;
1141
1142 ext = F2FS_OPTION(sbi).extensions;
1143 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
1144
1145 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1146 ext_cnt >= COMPRESS_EXT_NUM) {
1147 f2fs_err(sbi,
1148 "invalid extension length/number");
1149 kfree(name);
1150 return -EINVAL;
1151 }
1152
1153 strcpy(ext[ext_cnt], name);
1154 F2FS_OPTION(sbi).compress_ext_cnt++;
1155 kfree(name);
1156 break;
1157 case Opt_nocompress_extension:
1158 if (!f2fs_sb_has_compression(sbi)) {
1159 f2fs_info(sbi, "Image doesn't support compression");
1160 break;
1161 }
1162 name = match_strdup(&args[0]);
1163 if (!name)
1164 return -ENOMEM;
1165
1166 noext = F2FS_OPTION(sbi).noextensions;
1167 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
1168
1169 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1170 noext_cnt >= COMPRESS_EXT_NUM) {
1171 f2fs_err(sbi,
1172 "invalid extension length/number");
1173 kfree(name);
1174 return -EINVAL;
1175 }
1176
1177 strcpy(noext[noext_cnt], name);
1178 F2FS_OPTION(sbi).nocompress_ext_cnt++;
1179 kfree(name);
1180 break;
1181 case Opt_compress_chksum:
1182 if (!f2fs_sb_has_compression(sbi)) {
1183 f2fs_info(sbi, "Image doesn't support compression");
1184 break;
1185 }
1186 F2FS_OPTION(sbi).compress_chksum = true;
1187 break;
1188 case Opt_compress_mode:
1189 if (!f2fs_sb_has_compression(sbi)) {
1190 f2fs_info(sbi, "Image doesn't support compression");
1191 break;
1192 }
1193 name = match_strdup(&args[0]);
1194 if (!name)
1195 return -ENOMEM;
1196 if (!strcmp(name, "fs")) {
1197 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1198 } else if (!strcmp(name, "user")) {
1199 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER;
1200 } else {
1201 kfree(name);
1202 return -EINVAL;
1203 }
1204 kfree(name);
1205 break;
1206 case Opt_compress_cache:
1207 if (!f2fs_sb_has_compression(sbi)) {
1208 f2fs_info(sbi, "Image doesn't support compression");
1209 break;
1210 }
1211 set_opt(sbi, COMPRESS_CACHE);
1212 break;
1213#else
1214 case Opt_compress_algorithm:
1215 case Opt_compress_log_size:
1216 case Opt_compress_extension:
1217 case Opt_nocompress_extension:
1218 case Opt_compress_chksum:
1219 case Opt_compress_mode:
1220 case Opt_compress_cache:
1221 f2fs_info(sbi, "compression options not supported");
1222 break;
1223#endif
1224 case Opt_atgc:
1225 set_opt(sbi, ATGC);
1226 break;
1227 case Opt_gc_merge:
1228 set_opt(sbi, GC_MERGE);
1229 break;
1230 case Opt_nogc_merge:
1231 clear_opt(sbi, GC_MERGE);
1232 break;
1233 case Opt_discard_unit:
1234 name = match_strdup(&args[0]);
1235 if (!name)
1236 return -ENOMEM;
1237 if (!strcmp(name, "block")) {
1238 F2FS_OPTION(sbi).discard_unit =
1239 DISCARD_UNIT_BLOCK;
1240 } else if (!strcmp(name, "segment")) {
1241 F2FS_OPTION(sbi).discard_unit =
1242 DISCARD_UNIT_SEGMENT;
1243 } else if (!strcmp(name, "section")) {
1244 F2FS_OPTION(sbi).discard_unit =
1245 DISCARD_UNIT_SECTION;
1246 } else {
1247 kfree(name);
1248 return -EINVAL;
1249 }
1250 kfree(name);
1251 break;
1252 case Opt_memory_mode:
1253 name = match_strdup(&args[0]);
1254 if (!name)
1255 return -ENOMEM;
1256 if (!strcmp(name, "normal")) {
1257 F2FS_OPTION(sbi).memory_mode =
1258 MEMORY_MODE_NORMAL;
1259 } else if (!strcmp(name, "low")) {
1260 F2FS_OPTION(sbi).memory_mode =
1261 MEMORY_MODE_LOW;
1262 } else {
1263 kfree(name);
1264 return -EINVAL;
1265 }
1266 kfree(name);
1267 break;
1268 case Opt_age_extent_cache:
1269 set_opt(sbi, AGE_EXTENT_CACHE);
1270 break;
1271 default:
1272 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
1273 p);
1274 return -EINVAL;
1275 }
1276 }
1277default_check:
1278#ifdef CONFIG_QUOTA
1279 if (f2fs_check_quota_options(sbi))
1280 return -EINVAL;
1281#else
1282 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
1283 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1284 return -EINVAL;
1285 }
1286 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
1287 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1288 return -EINVAL;
1289 }
1290#endif
1291#if !IS_ENABLED(CONFIG_UNICODE)
1292 if (f2fs_sb_has_casefold(sbi)) {
1293 f2fs_err(sbi,
1294 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
1295 return -EINVAL;
1296 }
1297#endif
1298 /*
1299 * The BLKZONED feature indicates that the drive was formatted with
1300 * zone alignment optimization. This is optional for host-aware
1301 * devices, but mandatory for host-managed zoned block devices.
1302 */
1303 if (f2fs_sb_has_blkzoned(sbi)) {
1304#ifdef CONFIG_BLK_DEV_ZONED
1305 if (F2FS_OPTION(sbi).discard_unit !=
1306 DISCARD_UNIT_SECTION) {
1307 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default");
1308 F2FS_OPTION(sbi).discard_unit =
1309 DISCARD_UNIT_SECTION;
1310 }
1311#else
1312 f2fs_err(sbi, "Zoned block device support is not enabled");
1313 return -EINVAL;
1314#endif
1315 }
1316
1317#ifdef CONFIG_F2FS_FS_COMPRESSION
1318 if (f2fs_test_compress_extension(sbi)) {
1319 f2fs_err(sbi, "invalid compress or nocompress extension");
1320 return -EINVAL;
1321 }
1322#endif
1323
1324 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
1325 f2fs_err(sbi, "Should set mode=lfs with %luKB-sized IO",
1326 F2FS_IO_SIZE_KB(sbi));
1327 return -EINVAL;
1328 }
1329
1330 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
1331 int min_size, max_size;
1332
1333 if (!f2fs_sb_has_extra_attr(sbi) ||
1334 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
1335 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
1336 return -EINVAL;
1337 }
1338 if (!test_opt(sbi, INLINE_XATTR)) {
1339 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
1340 return -EINVAL;
1341 }
1342
1343 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
1344 max_size = MAX_INLINE_XATTR_SIZE;
1345
1346 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
1347 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
1348 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
1349 min_size, max_size);
1350 return -EINVAL;
1351 }
1352 }
1353
1354 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
1355 f2fs_err(sbi, "LFS is not compatible with checkpoint=disable");
1356 return -EINVAL;
1357 }
1358
1359 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) {
1360 f2fs_err(sbi, "LFS is not compatible with ATGC");
1361 return -EINVAL;
1362 }
1363
1364 if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) {
1365 f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode");
1366 return -EINVAL;
1367 }
1368
1369 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
1370 f2fs_err(sbi, "Allow to mount readonly mode only");
1371 return -EROFS;
1372 }
1373 return 0;
1374}
1375
1376static struct inode *f2fs_alloc_inode(struct super_block *sb)
1377{
1378 struct f2fs_inode_info *fi;
1379
1380 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC))
1381 return NULL;
1382
1383 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO);
1384 if (!fi)
1385 return NULL;
1386
1387 init_once((void *) fi);
1388
1389 /* Initialize f2fs-specific inode info */
1390 atomic_set(&fi->dirty_pages, 0);
1391 atomic_set(&fi->i_compr_blocks, 0);
1392 init_f2fs_rwsem(&fi->i_sem);
1393 spin_lock_init(&fi->i_size_lock);
1394 INIT_LIST_HEAD(&fi->dirty_list);
1395 INIT_LIST_HEAD(&fi->gdirty_list);
1396 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]);
1397 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]);
1398 init_f2fs_rwsem(&fi->i_xattr_sem);
1399
1400 /* Will be used by directory only */
1401 fi->i_dir_level = F2FS_SB(sb)->dir_level;
1402
1403 return &fi->vfs_inode;
1404}
1405
1406static int f2fs_drop_inode(struct inode *inode)
1407{
1408 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1409 int ret;
1410
1411 /*
1412 * during filesystem shutdown, if checkpoint is disabled,
1413 * drop useless meta/node dirty pages.
1414 */
1415 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1416 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1417 inode->i_ino == F2FS_META_INO(sbi)) {
1418 trace_f2fs_drop_inode(inode, 1);
1419 return 1;
1420 }
1421 }
1422
1423 /*
1424 * This is to avoid a deadlock condition like below.
1425 * writeback_single_inode(inode)
1426 * - f2fs_write_data_page
1427 * - f2fs_gc -> iput -> evict
1428 * - inode_wait_for_writeback(inode)
1429 */
1430 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
1431 if (!inode->i_nlink && !is_bad_inode(inode)) {
1432 /* to avoid evict_inode call simultaneously */
1433 atomic_inc(&inode->i_count);
1434 spin_unlock(&inode->i_lock);
1435
1436 /* should remain fi->extent_tree for writepage */
1437 f2fs_destroy_extent_node(inode);
1438
1439 sb_start_intwrite(inode->i_sb);
1440 f2fs_i_size_write(inode, 0);
1441
1442 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1443 inode, NULL, 0, DATA);
1444 truncate_inode_pages_final(inode->i_mapping);
1445
1446 if (F2FS_HAS_BLOCKS(inode))
1447 f2fs_truncate(inode);
1448
1449 sb_end_intwrite(inode->i_sb);
1450
1451 spin_lock(&inode->i_lock);
1452 atomic_dec(&inode->i_count);
1453 }
1454 trace_f2fs_drop_inode(inode, 0);
1455 return 0;
1456 }
1457 ret = generic_drop_inode(inode);
1458 if (!ret)
1459 ret = fscrypt_drop_inode(inode);
1460 trace_f2fs_drop_inode(inode, ret);
1461 return ret;
1462}
1463
1464int f2fs_inode_dirtied(struct inode *inode, bool sync)
1465{
1466 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1467 int ret = 0;
1468
1469 spin_lock(&sbi->inode_lock[DIRTY_META]);
1470 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1471 ret = 1;
1472 } else {
1473 set_inode_flag(inode, FI_DIRTY_INODE);
1474 stat_inc_dirty_inode(sbi, DIRTY_META);
1475 }
1476 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1477 list_add_tail(&F2FS_I(inode)->gdirty_list,
1478 &sbi->inode_list[DIRTY_META]);
1479 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1480 }
1481 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1482 return ret;
1483}
1484
1485void f2fs_inode_synced(struct inode *inode)
1486{
1487 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1488
1489 spin_lock(&sbi->inode_lock[DIRTY_META]);
1490 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1491 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1492 return;
1493 }
1494 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1495 list_del_init(&F2FS_I(inode)->gdirty_list);
1496 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1497 }
1498 clear_inode_flag(inode, FI_DIRTY_INODE);
1499 clear_inode_flag(inode, FI_AUTO_RECOVER);
1500 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
1501 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1502}
1503
1504/*
1505 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1506 *
1507 * We should call set_dirty_inode to write the dirty inode through write_inode.
1508 */
1509static void f2fs_dirty_inode(struct inode *inode, int flags)
1510{
1511 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1512
1513 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1514 inode->i_ino == F2FS_META_INO(sbi))
1515 return;
1516
1517 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1518 clear_inode_flag(inode, FI_AUTO_RECOVER);
1519
1520 f2fs_inode_dirtied(inode, false);
1521}
1522
1523static void f2fs_free_inode(struct inode *inode)
1524{
1525 fscrypt_free_inode(inode);
1526 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1527}
1528
1529static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1530{
1531 percpu_counter_destroy(&sbi->total_valid_inode_count);
1532 percpu_counter_destroy(&sbi->rf_node_block_count);
1533 percpu_counter_destroy(&sbi->alloc_valid_block_count);
1534}
1535
1536static void destroy_device_list(struct f2fs_sb_info *sbi)
1537{
1538 int i;
1539
1540 for (i = 0; i < sbi->s_ndevs; i++) {
1541 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1542#ifdef CONFIG_BLK_DEV_ZONED
1543 kvfree(FDEV(i).blkz_seq);
1544#endif
1545 }
1546 kvfree(sbi->devs);
1547}
1548
1549static void f2fs_put_super(struct super_block *sb)
1550{
1551 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1552 int i;
1553 bool done;
1554
1555 /* unregister procfs/sysfs entries in advance to avoid race case */
1556 f2fs_unregister_sysfs(sbi);
1557
1558 f2fs_quota_off_umount(sb);
1559
1560 /* prevent remaining shrinker jobs */
1561 mutex_lock(&sbi->umount_mutex);
1562
1563 /*
1564 * flush all issued checkpoints and stop checkpoint issue thread.
1565 * after then, all checkpoints should be done by each process context.
1566 */
1567 f2fs_stop_ckpt_thread(sbi);
1568
1569 /*
1570 * We don't need to do checkpoint when superblock is clean.
1571 * But, the previous checkpoint was not done by umount, it needs to do
1572 * clean checkpoint again.
1573 */
1574 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1575 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
1576 struct cp_control cpc = {
1577 .reason = CP_UMOUNT,
1578 };
1579 f2fs_write_checkpoint(sbi, &cpc);
1580 }
1581
1582 /* be sure to wait for any on-going discard commands */
1583 done = f2fs_issue_discard_timeout(sbi);
1584 if (f2fs_realtime_discard_enable(sbi) && !sbi->discard_blks && done) {
1585 struct cp_control cpc = {
1586 .reason = CP_UMOUNT | CP_TRIMMED,
1587 };
1588 f2fs_write_checkpoint(sbi, &cpc);
1589 }
1590
1591 /*
1592 * normally superblock is clean, so we need to release this.
1593 * In addition, EIO will skip do checkpoint, we need this as well.
1594 */
1595 f2fs_release_ino_entry(sbi, true);
1596
1597 f2fs_leave_shrinker(sbi);
1598 mutex_unlock(&sbi->umount_mutex);
1599
1600 /* our cp_error case, we can wait for any writeback page */
1601 f2fs_flush_merged_writes(sbi);
1602
1603 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1604
1605 f2fs_bug_on(sbi, sbi->fsync_node_num);
1606
1607 f2fs_destroy_compress_inode(sbi);
1608
1609 iput(sbi->node_inode);
1610 sbi->node_inode = NULL;
1611
1612 iput(sbi->meta_inode);
1613 sbi->meta_inode = NULL;
1614
1615 /*
1616 * iput() can update stat information, if f2fs_write_checkpoint()
1617 * above failed with error.
1618 */
1619 f2fs_destroy_stats(sbi);
1620
1621 /* destroy f2fs internal modules */
1622 f2fs_destroy_node_manager(sbi);
1623 f2fs_destroy_segment_manager(sbi);
1624
1625 f2fs_destroy_post_read_wq(sbi);
1626
1627 kvfree(sbi->ckpt);
1628
1629 sb->s_fs_info = NULL;
1630 if (sbi->s_chksum_driver)
1631 crypto_free_shash(sbi->s_chksum_driver);
1632 kfree(sbi->raw_super);
1633
1634 destroy_device_list(sbi);
1635 f2fs_destroy_page_array_cache(sbi);
1636 f2fs_destroy_xattr_caches(sbi);
1637 mempool_destroy(sbi->write_io_dummy);
1638#ifdef CONFIG_QUOTA
1639 for (i = 0; i < MAXQUOTAS; i++)
1640 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
1641#endif
1642 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
1643 destroy_percpu_info(sbi);
1644 f2fs_destroy_iostat(sbi);
1645 for (i = 0; i < NR_PAGE_TYPE; i++)
1646 kvfree(sbi->write_io[i]);
1647#if IS_ENABLED(CONFIG_UNICODE)
1648 utf8_unload(sb->s_encoding);
1649#endif
1650 kfree(sbi);
1651}
1652
1653int f2fs_sync_fs(struct super_block *sb, int sync)
1654{
1655 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1656 int err = 0;
1657
1658 if (unlikely(f2fs_cp_error(sbi)))
1659 return 0;
1660 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1661 return 0;
1662
1663 trace_f2fs_sync_fs(sb, sync);
1664
1665 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1666 return -EAGAIN;
1667
1668 if (sync)
1669 err = f2fs_issue_checkpoint(sbi);
1670
1671 return err;
1672}
1673
1674static int f2fs_freeze(struct super_block *sb)
1675{
1676 if (f2fs_readonly(sb))
1677 return 0;
1678
1679 /* IO error happened before */
1680 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1681 return -EIO;
1682
1683 /* must be clean, since sync_filesystem() was already called */
1684 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1685 return -EINVAL;
1686
1687 /* Let's flush checkpoints and stop the thread. */
1688 f2fs_flush_ckpt_thread(F2FS_SB(sb));
1689
1690 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */
1691 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING);
1692 return 0;
1693}
1694
1695static int f2fs_unfreeze(struct super_block *sb)
1696{
1697 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING);
1698 return 0;
1699}
1700
1701#ifdef CONFIG_QUOTA
1702static int f2fs_statfs_project(struct super_block *sb,
1703 kprojid_t projid, struct kstatfs *buf)
1704{
1705 struct kqid qid;
1706 struct dquot *dquot;
1707 u64 limit;
1708 u64 curblock;
1709
1710 qid = make_kqid_projid(projid);
1711 dquot = dqget(sb, qid);
1712 if (IS_ERR(dquot))
1713 return PTR_ERR(dquot);
1714 spin_lock(&dquot->dq_dqb_lock);
1715
1716 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1717 dquot->dq_dqb.dqb_bhardlimit);
1718 if (limit)
1719 limit >>= sb->s_blocksize_bits;
1720
1721 if (limit && buf->f_blocks > limit) {
1722 curblock = (dquot->dq_dqb.dqb_curspace +
1723 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
1724 buf->f_blocks = limit;
1725 buf->f_bfree = buf->f_bavail =
1726 (buf->f_blocks > curblock) ?
1727 (buf->f_blocks - curblock) : 0;
1728 }
1729
1730 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1731 dquot->dq_dqb.dqb_ihardlimit);
1732
1733 if (limit && buf->f_files > limit) {
1734 buf->f_files = limit;
1735 buf->f_ffree =
1736 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1737 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1738 }
1739
1740 spin_unlock(&dquot->dq_dqb_lock);
1741 dqput(dquot);
1742 return 0;
1743}
1744#endif
1745
1746static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1747{
1748 struct super_block *sb = dentry->d_sb;
1749 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1750 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1751 block_t total_count, user_block_count, start_count;
1752 u64 avail_node_count;
1753 unsigned int total_valid_node_count;
1754
1755 total_count = le64_to_cpu(sbi->raw_super->block_count);
1756 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
1757 buf->f_type = F2FS_SUPER_MAGIC;
1758 buf->f_bsize = sbi->blocksize;
1759
1760 buf->f_blocks = total_count - start_count;
1761
1762 spin_lock(&sbi->stat_lock);
1763
1764 user_block_count = sbi->user_block_count;
1765 total_valid_node_count = valid_node_count(sbi);
1766 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
1767 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
1768 sbi->current_reserved_blocks;
1769
1770 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1771 buf->f_bfree = 0;
1772 else
1773 buf->f_bfree -= sbi->unusable_block_count;
1774 spin_unlock(&sbi->stat_lock);
1775
1776 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1777 buf->f_bavail = buf->f_bfree -
1778 F2FS_OPTION(sbi).root_reserved_blocks;
1779 else
1780 buf->f_bavail = 0;
1781
1782 if (avail_node_count > user_block_count) {
1783 buf->f_files = user_block_count;
1784 buf->f_ffree = buf->f_bavail;
1785 } else {
1786 buf->f_files = avail_node_count;
1787 buf->f_ffree = min(avail_node_count - total_valid_node_count,
1788 buf->f_bavail);
1789 }
1790
1791 buf->f_namelen = F2FS_NAME_LEN;
1792 buf->f_fsid = u64_to_fsid(id);
1793
1794#ifdef CONFIG_QUOTA
1795 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1796 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1797 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1798 }
1799#endif
1800 return 0;
1801}
1802
1803static inline void f2fs_show_quota_options(struct seq_file *seq,
1804 struct super_block *sb)
1805{
1806#ifdef CONFIG_QUOTA
1807 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1808
1809 if (F2FS_OPTION(sbi).s_jquota_fmt) {
1810 char *fmtname = "";
1811
1812 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
1813 case QFMT_VFS_OLD:
1814 fmtname = "vfsold";
1815 break;
1816 case QFMT_VFS_V0:
1817 fmtname = "vfsv0";
1818 break;
1819 case QFMT_VFS_V1:
1820 fmtname = "vfsv1";
1821 break;
1822 }
1823 seq_printf(seq, ",jqfmt=%s", fmtname);
1824 }
1825
1826 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1827 seq_show_option(seq, "usrjquota",
1828 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
1829
1830 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1831 seq_show_option(seq, "grpjquota",
1832 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
1833
1834 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1835 seq_show_option(seq, "prjjquota",
1836 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
1837#endif
1838}
1839
1840#ifdef CONFIG_F2FS_FS_COMPRESSION
1841static inline void f2fs_show_compress_options(struct seq_file *seq,
1842 struct super_block *sb)
1843{
1844 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1845 char *algtype = "";
1846 int i;
1847
1848 if (!f2fs_sb_has_compression(sbi))
1849 return;
1850
1851 switch (F2FS_OPTION(sbi).compress_algorithm) {
1852 case COMPRESS_LZO:
1853 algtype = "lzo";
1854 break;
1855 case COMPRESS_LZ4:
1856 algtype = "lz4";
1857 break;
1858 case COMPRESS_ZSTD:
1859 algtype = "zstd";
1860 break;
1861 case COMPRESS_LZORLE:
1862 algtype = "lzo-rle";
1863 break;
1864 }
1865 seq_printf(seq, ",compress_algorithm=%s", algtype);
1866
1867 if (F2FS_OPTION(sbi).compress_level)
1868 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level);
1869
1870 seq_printf(seq, ",compress_log_size=%u",
1871 F2FS_OPTION(sbi).compress_log_size);
1872
1873 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1874 seq_printf(seq, ",compress_extension=%s",
1875 F2FS_OPTION(sbi).extensions[i]);
1876 }
1877
1878 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) {
1879 seq_printf(seq, ",nocompress_extension=%s",
1880 F2FS_OPTION(sbi).noextensions[i]);
1881 }
1882
1883 if (F2FS_OPTION(sbi).compress_chksum)
1884 seq_puts(seq, ",compress_chksum");
1885
1886 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS)
1887 seq_printf(seq, ",compress_mode=%s", "fs");
1888 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER)
1889 seq_printf(seq, ",compress_mode=%s", "user");
1890
1891 if (test_opt(sbi, COMPRESS_CACHE))
1892 seq_puts(seq, ",compress_cache");
1893}
1894#endif
1895
1896static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1897{
1898 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1899
1900 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1901 seq_printf(seq, ",background_gc=%s", "sync");
1902 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1903 seq_printf(seq, ",background_gc=%s", "on");
1904 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
1905 seq_printf(seq, ",background_gc=%s", "off");
1906
1907 if (test_opt(sbi, GC_MERGE))
1908 seq_puts(seq, ",gc_merge");
1909 else
1910 seq_puts(seq, ",nogc_merge");
1911
1912 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1913 seq_puts(seq, ",disable_roll_forward");
1914 if (test_opt(sbi, NORECOVERY))
1915 seq_puts(seq, ",norecovery");
1916 if (test_opt(sbi, DISCARD)) {
1917 seq_puts(seq, ",discard");
1918 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK)
1919 seq_printf(seq, ",discard_unit=%s", "block");
1920 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT)
1921 seq_printf(seq, ",discard_unit=%s", "segment");
1922 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION)
1923 seq_printf(seq, ",discard_unit=%s", "section");
1924 } else {
1925 seq_puts(seq, ",nodiscard");
1926 }
1927 if (test_opt(sbi, NOHEAP))
1928 seq_puts(seq, ",no_heap");
1929 else
1930 seq_puts(seq, ",heap");
1931#ifdef CONFIG_F2FS_FS_XATTR
1932 if (test_opt(sbi, XATTR_USER))
1933 seq_puts(seq, ",user_xattr");
1934 else
1935 seq_puts(seq, ",nouser_xattr");
1936 if (test_opt(sbi, INLINE_XATTR))
1937 seq_puts(seq, ",inline_xattr");
1938 else
1939 seq_puts(seq, ",noinline_xattr");
1940 if (test_opt(sbi, INLINE_XATTR_SIZE))
1941 seq_printf(seq, ",inline_xattr_size=%u",
1942 F2FS_OPTION(sbi).inline_xattr_size);
1943#endif
1944#ifdef CONFIG_F2FS_FS_POSIX_ACL
1945 if (test_opt(sbi, POSIX_ACL))
1946 seq_puts(seq, ",acl");
1947 else
1948 seq_puts(seq, ",noacl");
1949#endif
1950 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
1951 seq_puts(seq, ",disable_ext_identify");
1952 if (test_opt(sbi, INLINE_DATA))
1953 seq_puts(seq, ",inline_data");
1954 else
1955 seq_puts(seq, ",noinline_data");
1956 if (test_opt(sbi, INLINE_DENTRY))
1957 seq_puts(seq, ",inline_dentry");
1958 else
1959 seq_puts(seq, ",noinline_dentry");
1960 if (test_opt(sbi, FLUSH_MERGE))
1961 seq_puts(seq, ",flush_merge");
1962 else
1963 seq_puts(seq, ",noflush_merge");
1964 if (test_opt(sbi, NOBARRIER))
1965 seq_puts(seq, ",nobarrier");
1966 else
1967 seq_puts(seq, ",barrier");
1968 if (test_opt(sbi, FASTBOOT))
1969 seq_puts(seq, ",fastboot");
1970 if (test_opt(sbi, READ_EXTENT_CACHE))
1971 seq_puts(seq, ",extent_cache");
1972 else
1973 seq_puts(seq, ",noextent_cache");
1974 if (test_opt(sbi, AGE_EXTENT_CACHE))
1975 seq_puts(seq, ",age_extent_cache");
1976 if (test_opt(sbi, DATA_FLUSH))
1977 seq_puts(seq, ",data_flush");
1978
1979 seq_puts(seq, ",mode=");
1980 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
1981 seq_puts(seq, "adaptive");
1982 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
1983 seq_puts(seq, "lfs");
1984 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG)
1985 seq_puts(seq, "fragment:segment");
1986 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK)
1987 seq_puts(seq, "fragment:block");
1988 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
1989 if (test_opt(sbi, RESERVE_ROOT))
1990 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
1991 F2FS_OPTION(sbi).root_reserved_blocks,
1992 from_kuid_munged(&init_user_ns,
1993 F2FS_OPTION(sbi).s_resuid),
1994 from_kgid_munged(&init_user_ns,
1995 F2FS_OPTION(sbi).s_resgid));
1996 if (F2FS_IO_SIZE_BITS(sbi))
1997 seq_printf(seq, ",io_bits=%u",
1998 F2FS_OPTION(sbi).write_io_size_bits);
1999#ifdef CONFIG_F2FS_FAULT_INJECTION
2000 if (test_opt(sbi, FAULT_INJECTION)) {
2001 seq_printf(seq, ",fault_injection=%u",
2002 F2FS_OPTION(sbi).fault_info.inject_rate);
2003 seq_printf(seq, ",fault_type=%u",
2004 F2FS_OPTION(sbi).fault_info.inject_type);
2005 }
2006#endif
2007#ifdef CONFIG_QUOTA
2008 if (test_opt(sbi, QUOTA))
2009 seq_puts(seq, ",quota");
2010 if (test_opt(sbi, USRQUOTA))
2011 seq_puts(seq, ",usrquota");
2012 if (test_opt(sbi, GRPQUOTA))
2013 seq_puts(seq, ",grpquota");
2014 if (test_opt(sbi, PRJQUOTA))
2015 seq_puts(seq, ",prjquota");
2016#endif
2017 f2fs_show_quota_options(seq, sbi->sb);
2018
2019 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
2020
2021 if (sbi->sb->s_flags & SB_INLINECRYPT)
2022 seq_puts(seq, ",inlinecrypt");
2023
2024 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
2025 seq_printf(seq, ",alloc_mode=%s", "default");
2026 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
2027 seq_printf(seq, ",alloc_mode=%s", "reuse");
2028
2029 if (test_opt(sbi, DISABLE_CHECKPOINT))
2030 seq_printf(seq, ",checkpoint=disable:%u",
2031 F2FS_OPTION(sbi).unusable_cap);
2032 if (test_opt(sbi, MERGE_CHECKPOINT))
2033 seq_puts(seq, ",checkpoint_merge");
2034 else
2035 seq_puts(seq, ",nocheckpoint_merge");
2036 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
2037 seq_printf(seq, ",fsync_mode=%s", "posix");
2038 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
2039 seq_printf(seq, ",fsync_mode=%s", "strict");
2040 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
2041 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
2042
2043#ifdef CONFIG_F2FS_FS_COMPRESSION
2044 f2fs_show_compress_options(seq, sbi->sb);
2045#endif
2046
2047 if (test_opt(sbi, ATGC))
2048 seq_puts(seq, ",atgc");
2049
2050 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL)
2051 seq_printf(seq, ",memory=%s", "normal");
2052 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW)
2053 seq_printf(seq, ",memory=%s", "low");
2054
2055 return 0;
2056}
2057
2058static void default_options(struct f2fs_sb_info *sbi)
2059{
2060 /* init some FS parameters */
2061 if (f2fs_sb_has_readonly(sbi))
2062 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE;
2063 else
2064 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
2065
2066 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
2067 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <=
2068 SMALL_VOLUME_SEGMENTS)
2069 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
2070 else
2071 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
2072 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
2073 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
2074 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
2075 if (f2fs_sb_has_compression(sbi)) {
2076 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
2077 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
2078 F2FS_OPTION(sbi).compress_ext_cnt = 0;
2079 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
2080 }
2081 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
2082 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL;
2083
2084 sbi->sb->s_flags &= ~SB_INLINECRYPT;
2085
2086 set_opt(sbi, INLINE_XATTR);
2087 set_opt(sbi, INLINE_DATA);
2088 set_opt(sbi, INLINE_DENTRY);
2089 set_opt(sbi, READ_EXTENT_CACHE);
2090 set_opt(sbi, NOHEAP);
2091 clear_opt(sbi, DISABLE_CHECKPOINT);
2092 set_opt(sbi, MERGE_CHECKPOINT);
2093 F2FS_OPTION(sbi).unusable_cap = 0;
2094 sbi->sb->s_flags |= SB_LAZYTIME;
2095 if (!f2fs_is_readonly(sbi))
2096 set_opt(sbi, FLUSH_MERGE);
2097 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi))
2098 set_opt(sbi, DISCARD);
2099 if (f2fs_sb_has_blkzoned(sbi)) {
2100 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
2101 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION;
2102 } else {
2103 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
2104 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK;
2105 }
2106
2107#ifdef CONFIG_F2FS_FS_XATTR
2108 set_opt(sbi, XATTR_USER);
2109#endif
2110#ifdef CONFIG_F2FS_FS_POSIX_ACL
2111 set_opt(sbi, POSIX_ACL);
2112#endif
2113
2114 f2fs_build_fault_attr(sbi, 0, 0);
2115}
2116
2117#ifdef CONFIG_QUOTA
2118static int f2fs_enable_quotas(struct super_block *sb);
2119#endif
2120
2121static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
2122{
2123 unsigned int s_flags = sbi->sb->s_flags;
2124 struct cp_control cpc;
2125 unsigned int gc_mode = sbi->gc_mode;
2126 int err = 0;
2127 int ret;
2128 block_t unusable;
2129
2130 if (s_flags & SB_RDONLY) {
2131 f2fs_err(sbi, "checkpoint=disable on readonly fs");
2132 return -EINVAL;
2133 }
2134 sbi->sb->s_flags |= SB_ACTIVE;
2135
2136 /* check if we need more GC first */
2137 unusable = f2fs_get_unusable_blocks(sbi);
2138 if (!f2fs_disable_cp_again(sbi, unusable))
2139 goto skip_gc;
2140
2141 f2fs_update_time(sbi, DISABLE_TIME);
2142
2143 sbi->gc_mode = GC_URGENT_HIGH;
2144
2145 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
2146 struct f2fs_gc_control gc_control = {
2147 .victim_segno = NULL_SEGNO,
2148 .init_gc_type = FG_GC,
2149 .should_migrate_blocks = false,
2150 .err_gc_skipped = true,
2151 .nr_free_secs = 1 };
2152
2153 f2fs_down_write(&sbi->gc_lock);
2154 err = f2fs_gc(sbi, &gc_control);
2155 if (err == -ENODATA) {
2156 err = 0;
2157 break;
2158 }
2159 if (err && err != -EAGAIN)
2160 break;
2161 }
2162
2163 ret = sync_filesystem(sbi->sb);
2164 if (ret || err) {
2165 err = ret ? ret : err;
2166 goto restore_flag;
2167 }
2168
2169 unusable = f2fs_get_unusable_blocks(sbi);
2170 if (f2fs_disable_cp_again(sbi, unusable)) {
2171 err = -EAGAIN;
2172 goto restore_flag;
2173 }
2174
2175skip_gc:
2176 f2fs_down_write(&sbi->gc_lock);
2177 cpc.reason = CP_PAUSE;
2178 set_sbi_flag(sbi, SBI_CP_DISABLED);
2179 err = f2fs_write_checkpoint(sbi, &cpc);
2180 if (err)
2181 goto out_unlock;
2182
2183 spin_lock(&sbi->stat_lock);
2184 sbi->unusable_block_count = unusable;
2185 spin_unlock(&sbi->stat_lock);
2186
2187out_unlock:
2188 f2fs_up_write(&sbi->gc_lock);
2189restore_flag:
2190 sbi->gc_mode = gc_mode;
2191 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
2192 return err;
2193}
2194
2195static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
2196{
2197 int retry = DEFAULT_RETRY_IO_COUNT;
2198
2199 /* we should flush all the data to keep data consistency */
2200 do {
2201 sync_inodes_sb(sbi->sb);
2202 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
2203 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--);
2204
2205 if (unlikely(retry < 0))
2206 f2fs_warn(sbi, "checkpoint=enable has some unwritten data.");
2207
2208 f2fs_down_write(&sbi->gc_lock);
2209 f2fs_dirty_to_prefree(sbi);
2210
2211 clear_sbi_flag(sbi, SBI_CP_DISABLED);
2212 set_sbi_flag(sbi, SBI_IS_DIRTY);
2213 f2fs_up_write(&sbi->gc_lock);
2214
2215 f2fs_sync_fs(sbi->sb, 1);
2216
2217 /* Let's ensure there's no pending checkpoint anymore */
2218 f2fs_flush_ckpt_thread(sbi);
2219}
2220
2221static int f2fs_remount(struct super_block *sb, int *flags, char *data)
2222{
2223 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2224 struct f2fs_mount_info org_mount_opt;
2225 unsigned long old_sb_flags;
2226 int err;
2227 bool need_restart_gc = false, need_stop_gc = false;
2228 bool need_restart_ckpt = false, need_stop_ckpt = false;
2229 bool need_restart_flush = false, need_stop_flush = false;
2230 bool need_restart_discard = false, need_stop_discard = false;
2231 bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE);
2232 bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE);
2233 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT);
2234 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
2235 bool no_atgc = !test_opt(sbi, ATGC);
2236 bool no_discard = !test_opt(sbi, DISCARD);
2237 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE);
2238 bool block_unit_discard = f2fs_block_unit_discard(sbi);
2239#ifdef CONFIG_QUOTA
2240 int i, j;
2241#endif
2242
2243 /*
2244 * Save the old mount options in case we
2245 * need to restore them.
2246 */
2247 org_mount_opt = sbi->mount_opt;
2248 old_sb_flags = sb->s_flags;
2249
2250#ifdef CONFIG_QUOTA
2251 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
2252 for (i = 0; i < MAXQUOTAS; i++) {
2253 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2254 org_mount_opt.s_qf_names[i] =
2255 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
2256 GFP_KERNEL);
2257 if (!org_mount_opt.s_qf_names[i]) {
2258 for (j = 0; j < i; j++)
2259 kfree(org_mount_opt.s_qf_names[j]);
2260 return -ENOMEM;
2261 }
2262 } else {
2263 org_mount_opt.s_qf_names[i] = NULL;
2264 }
2265 }
2266#endif
2267
2268 /* recover superblocks we couldn't write due to previous RO mount */
2269 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
2270 err = f2fs_commit_super(sbi, false);
2271 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
2272 err);
2273 if (!err)
2274 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2275 }
2276
2277 default_options(sbi);
2278
2279 /* parse mount options */
2280 err = parse_options(sb, data, true);
2281 if (err)
2282 goto restore_opts;
2283
2284 /*
2285 * Previous and new state of filesystem is RO,
2286 * so skip checking GC and FLUSH_MERGE conditions.
2287 */
2288 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
2289 goto skip;
2290
2291 if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) {
2292 err = -EROFS;
2293 goto restore_opts;
2294 }
2295
2296#ifdef CONFIG_QUOTA
2297 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
2298 err = dquot_suspend(sb, -1);
2299 if (err < 0)
2300 goto restore_opts;
2301 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
2302 /* dquot_resume needs RW */
2303 sb->s_flags &= ~SB_RDONLY;
2304 if (sb_any_quota_suspended(sb)) {
2305 dquot_resume(sb, -1);
2306 } else if (f2fs_sb_has_quota_ino(sbi)) {
2307 err = f2fs_enable_quotas(sb);
2308 if (err)
2309 goto restore_opts;
2310 }
2311 }
2312#endif
2313 if (f2fs_lfs_mode(sbi) && !IS_F2FS_IPU_DISABLE(sbi)) {
2314 err = -EINVAL;
2315 f2fs_warn(sbi, "LFS is not compatible with IPU");
2316 goto restore_opts;
2317 }
2318
2319 /* disallow enable atgc dynamically */
2320 if (no_atgc == !!test_opt(sbi, ATGC)) {
2321 err = -EINVAL;
2322 f2fs_warn(sbi, "switch atgc option is not allowed");
2323 goto restore_opts;
2324 }
2325
2326 /* disallow enable/disable extent_cache dynamically */
2327 if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) {
2328 err = -EINVAL;
2329 f2fs_warn(sbi, "switch extent_cache option is not allowed");
2330 goto restore_opts;
2331 }
2332 /* disallow enable/disable age extent_cache dynamically */
2333 if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) {
2334 err = -EINVAL;
2335 f2fs_warn(sbi, "switch age_extent_cache option is not allowed");
2336 goto restore_opts;
2337 }
2338
2339 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
2340 err = -EINVAL;
2341 f2fs_warn(sbi, "switch io_bits option is not allowed");
2342 goto restore_opts;
2343 }
2344
2345 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) {
2346 err = -EINVAL;
2347 f2fs_warn(sbi, "switch compress_cache option is not allowed");
2348 goto restore_opts;
2349 }
2350
2351 if (block_unit_discard != f2fs_block_unit_discard(sbi)) {
2352 err = -EINVAL;
2353 f2fs_warn(sbi, "switch discard_unit option is not allowed");
2354 goto restore_opts;
2355 }
2356
2357 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
2358 err = -EINVAL;
2359 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
2360 goto restore_opts;
2361 }
2362
2363 /*
2364 * We stop the GC thread if FS is mounted as RO
2365 * or if background_gc = off is passed in mount
2366 * option. Also sync the filesystem.
2367 */
2368 if ((*flags & SB_RDONLY) ||
2369 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF &&
2370 !test_opt(sbi, GC_MERGE))) {
2371 if (sbi->gc_thread) {
2372 f2fs_stop_gc_thread(sbi);
2373 need_restart_gc = true;
2374 }
2375 } else if (!sbi->gc_thread) {
2376 err = f2fs_start_gc_thread(sbi);
2377 if (err)
2378 goto restore_opts;
2379 need_stop_gc = true;
2380 }
2381
2382 if (*flags & SB_RDONLY) {
2383 sync_inodes_sb(sb);
2384
2385 set_sbi_flag(sbi, SBI_IS_DIRTY);
2386 set_sbi_flag(sbi, SBI_IS_CLOSE);
2387 f2fs_sync_fs(sb, 1);
2388 clear_sbi_flag(sbi, SBI_IS_CLOSE);
2389 }
2390
2391 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
2392 !test_opt(sbi, MERGE_CHECKPOINT)) {
2393 f2fs_stop_ckpt_thread(sbi);
2394 need_restart_ckpt = true;
2395 } else {
2396 /* Flush if the prevous checkpoint, if exists. */
2397 f2fs_flush_ckpt_thread(sbi);
2398
2399 err = f2fs_start_ckpt_thread(sbi);
2400 if (err) {
2401 f2fs_err(sbi,
2402 "Failed to start F2FS issue_checkpoint_thread (%d)",
2403 err);
2404 goto restore_gc;
2405 }
2406 need_stop_ckpt = true;
2407 }
2408
2409 /*
2410 * We stop issue flush thread if FS is mounted as RO
2411 * or if flush_merge is not passed in mount option.
2412 */
2413 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
2414 clear_opt(sbi, FLUSH_MERGE);
2415 f2fs_destroy_flush_cmd_control(sbi, false);
2416 need_restart_flush = true;
2417 } else {
2418 err = f2fs_create_flush_cmd_control(sbi);
2419 if (err)
2420 goto restore_ckpt;
2421 need_stop_flush = true;
2422 }
2423
2424 if (no_discard == !!test_opt(sbi, DISCARD)) {
2425 if (test_opt(sbi, DISCARD)) {
2426 err = f2fs_start_discard_thread(sbi);
2427 if (err)
2428 goto restore_flush;
2429 need_stop_discard = true;
2430 } else {
2431 f2fs_stop_discard_thread(sbi);
2432 f2fs_issue_discard_timeout(sbi);
2433 need_restart_discard = true;
2434 }
2435 }
2436
2437 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) {
2438 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
2439 err = f2fs_disable_checkpoint(sbi);
2440 if (err)
2441 goto restore_discard;
2442 } else {
2443 f2fs_enable_checkpoint(sbi);
2444 }
2445 }
2446
2447skip:
2448#ifdef CONFIG_QUOTA
2449 /* Release old quota file names */
2450 for (i = 0; i < MAXQUOTAS; i++)
2451 kfree(org_mount_opt.s_qf_names[i]);
2452#endif
2453 /* Update the POSIXACL Flag */
2454 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
2455 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
2456
2457 limit_reserve_root(sbi);
2458 adjust_unusable_cap_perc(sbi);
2459 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
2460 return 0;
2461restore_discard:
2462 if (need_restart_discard) {
2463 if (f2fs_start_discard_thread(sbi))
2464 f2fs_warn(sbi, "discard has been stopped");
2465 } else if (need_stop_discard) {
2466 f2fs_stop_discard_thread(sbi);
2467 }
2468restore_flush:
2469 if (need_restart_flush) {
2470 if (f2fs_create_flush_cmd_control(sbi))
2471 f2fs_warn(sbi, "background flush thread has stopped");
2472 } else if (need_stop_flush) {
2473 clear_opt(sbi, FLUSH_MERGE);
2474 f2fs_destroy_flush_cmd_control(sbi, false);
2475 }
2476restore_ckpt:
2477 if (need_restart_ckpt) {
2478 if (f2fs_start_ckpt_thread(sbi))
2479 f2fs_warn(sbi, "background ckpt thread has stopped");
2480 } else if (need_stop_ckpt) {
2481 f2fs_stop_ckpt_thread(sbi);
2482 }
2483restore_gc:
2484 if (need_restart_gc) {
2485 if (f2fs_start_gc_thread(sbi))
2486 f2fs_warn(sbi, "background gc thread has stopped");
2487 } else if (need_stop_gc) {
2488 f2fs_stop_gc_thread(sbi);
2489 }
2490restore_opts:
2491#ifdef CONFIG_QUOTA
2492 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
2493 for (i = 0; i < MAXQUOTAS; i++) {
2494 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
2495 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
2496 }
2497#endif
2498 sbi->mount_opt = org_mount_opt;
2499 sb->s_flags = old_sb_flags;
2500 return err;
2501}
2502
2503#ifdef CONFIG_QUOTA
2504static bool f2fs_need_recovery(struct f2fs_sb_info *sbi)
2505{
2506 /* need to recovery orphan */
2507 if (is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG))
2508 return true;
2509 /* need to recovery data */
2510 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
2511 return false;
2512 if (test_opt(sbi, NORECOVERY))
2513 return false;
2514 return !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG);
2515}
2516
2517static bool f2fs_recover_quota_begin(struct f2fs_sb_info *sbi)
2518{
2519 bool readonly = f2fs_readonly(sbi->sb);
2520
2521 if (!f2fs_need_recovery(sbi))
2522 return false;
2523
2524 /* it doesn't need to check f2fs_sb_has_readonly() */
2525 if (f2fs_hw_is_readonly(sbi))
2526 return false;
2527
2528 if (readonly) {
2529 sbi->sb->s_flags &= ~SB_RDONLY;
2530 set_sbi_flag(sbi, SBI_IS_WRITABLE);
2531 }
2532
2533 /*
2534 * Turn on quotas which were not enabled for read-only mounts if
2535 * filesystem has quota feature, so that they are updated correctly.
2536 */
2537 return f2fs_enable_quota_files(sbi, readonly);
2538}
2539
2540static void f2fs_recover_quota_end(struct f2fs_sb_info *sbi,
2541 bool quota_enabled)
2542{
2543 if (quota_enabled)
2544 f2fs_quota_off_umount(sbi->sb);
2545
2546 if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE)) {
2547 clear_sbi_flag(sbi, SBI_IS_WRITABLE);
2548 sbi->sb->s_flags |= SB_RDONLY;
2549 }
2550}
2551
2552/* Read data from quotafile */
2553static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
2554 size_t len, loff_t off)
2555{
2556 struct inode *inode = sb_dqopt(sb)->files[type];
2557 struct address_space *mapping = inode->i_mapping;
2558 block_t blkidx = F2FS_BYTES_TO_BLK(off);
2559 int offset = off & (sb->s_blocksize - 1);
2560 int tocopy;
2561 size_t toread;
2562 loff_t i_size = i_size_read(inode);
2563 struct page *page;
2564
2565 if (off > i_size)
2566 return 0;
2567
2568 if (off + len > i_size)
2569 len = i_size - off;
2570 toread = len;
2571 while (toread > 0) {
2572 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
2573repeat:
2574 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
2575 if (IS_ERR(page)) {
2576 if (PTR_ERR(page) == -ENOMEM) {
2577 memalloc_retry_wait(GFP_NOFS);
2578 goto repeat;
2579 }
2580 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2581 return PTR_ERR(page);
2582 }
2583
2584 lock_page(page);
2585
2586 if (unlikely(page->mapping != mapping)) {
2587 f2fs_put_page(page, 1);
2588 goto repeat;
2589 }
2590 if (unlikely(!PageUptodate(page))) {
2591 f2fs_put_page(page, 1);
2592 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2593 return -EIO;
2594 }
2595
2596 memcpy_from_page(data, page, offset, tocopy);
2597 f2fs_put_page(page, 1);
2598
2599 offset = 0;
2600 toread -= tocopy;
2601 data += tocopy;
2602 blkidx++;
2603 }
2604 return len;
2605}
2606
2607/* Write to quotafile */
2608static ssize_t f2fs_quota_write(struct super_block *sb, int type,
2609 const char *data, size_t len, loff_t off)
2610{
2611 struct inode *inode = sb_dqopt(sb)->files[type];
2612 struct address_space *mapping = inode->i_mapping;
2613 const struct address_space_operations *a_ops = mapping->a_ops;
2614 int offset = off & (sb->s_blocksize - 1);
2615 size_t towrite = len;
2616 struct page *page;
2617 void *fsdata = NULL;
2618 int err = 0;
2619 int tocopy;
2620
2621 while (towrite > 0) {
2622 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
2623 towrite);
2624retry:
2625 err = a_ops->write_begin(NULL, mapping, off, tocopy,
2626 &page, &fsdata);
2627 if (unlikely(err)) {
2628 if (err == -ENOMEM) {
2629 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
2630 goto retry;
2631 }
2632 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2633 break;
2634 }
2635
2636 memcpy_to_page(page, offset, data, tocopy);
2637
2638 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
2639 page, fsdata);
2640 offset = 0;
2641 towrite -= tocopy;
2642 off += tocopy;
2643 data += tocopy;
2644 cond_resched();
2645 }
2646
2647 if (len == towrite)
2648 return err;
2649 inode->i_mtime = inode->i_ctime = current_time(inode);
2650 f2fs_mark_inode_dirty_sync(inode, false);
2651 return len - towrite;
2652}
2653
2654int f2fs_dquot_initialize(struct inode *inode)
2655{
2656 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT))
2657 return -ESRCH;
2658
2659 return dquot_initialize(inode);
2660}
2661
2662static struct dquot **f2fs_get_dquots(struct inode *inode)
2663{
2664 return F2FS_I(inode)->i_dquot;
2665}
2666
2667static qsize_t *f2fs_get_reserved_space(struct inode *inode)
2668{
2669 return &F2FS_I(inode)->i_reserved_quota;
2670}
2671
2672static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
2673{
2674 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
2675 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
2676 return 0;
2677 }
2678
2679 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
2680 F2FS_OPTION(sbi).s_jquota_fmt, type);
2681}
2682
2683int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
2684{
2685 int enabled = 0;
2686 int i, err;
2687
2688 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
2689 err = f2fs_enable_quotas(sbi->sb);
2690 if (err) {
2691 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
2692 return 0;
2693 }
2694 return 1;
2695 }
2696
2697 for (i = 0; i < MAXQUOTAS; i++) {
2698 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2699 err = f2fs_quota_on_mount(sbi, i);
2700 if (!err) {
2701 enabled = 1;
2702 continue;
2703 }
2704 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2705 err, i);
2706 }
2707 }
2708 return enabled;
2709}
2710
2711static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2712 unsigned int flags)
2713{
2714 struct inode *qf_inode;
2715 unsigned long qf_inum;
2716 int err;
2717
2718 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
2719
2720 qf_inum = f2fs_qf_ino(sb, type);
2721 if (!qf_inum)
2722 return -EPERM;
2723
2724 qf_inode = f2fs_iget(sb, qf_inum);
2725 if (IS_ERR(qf_inode)) {
2726 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
2727 return PTR_ERR(qf_inode);
2728 }
2729
2730 /* Don't account quota for quota files to avoid recursion */
2731 qf_inode->i_flags |= S_NOQUOTA;
2732 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
2733 iput(qf_inode);
2734 return err;
2735}
2736
2737static int f2fs_enable_quotas(struct super_block *sb)
2738{
2739 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2740 int type, err = 0;
2741 unsigned long qf_inum;
2742 bool quota_mopt[MAXQUOTAS] = {
2743 test_opt(sbi, USRQUOTA),
2744 test_opt(sbi, GRPQUOTA),
2745 test_opt(sbi, PRJQUOTA),
2746 };
2747
2748 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
2749 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
2750 return 0;
2751 }
2752
2753 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2754
2755 for (type = 0; type < MAXQUOTAS; type++) {
2756 qf_inum = f2fs_qf_ino(sb, type);
2757 if (qf_inum) {
2758 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2759 DQUOT_USAGE_ENABLED |
2760 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2761 if (err) {
2762 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2763 type, err);
2764 for (type--; type >= 0; type--)
2765 dquot_quota_off(sb, type);
2766 set_sbi_flag(F2FS_SB(sb),
2767 SBI_QUOTA_NEED_REPAIR);
2768 return err;
2769 }
2770 }
2771 }
2772 return 0;
2773}
2774
2775static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type)
2776{
2777 struct quota_info *dqopt = sb_dqopt(sbi->sb);
2778 struct address_space *mapping = dqopt->files[type]->i_mapping;
2779 int ret = 0;
2780
2781 ret = dquot_writeback_dquots(sbi->sb, type);
2782 if (ret)
2783 goto out;
2784
2785 ret = filemap_fdatawrite(mapping);
2786 if (ret)
2787 goto out;
2788
2789 /* if we are using journalled quota */
2790 if (is_journalled_quota(sbi))
2791 goto out;
2792
2793 ret = filemap_fdatawait(mapping);
2794
2795 truncate_inode_pages(&dqopt->files[type]->i_data, 0);
2796out:
2797 if (ret)
2798 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2799 return ret;
2800}
2801
2802int f2fs_quota_sync(struct super_block *sb, int type)
2803{
2804 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2805 struct quota_info *dqopt = sb_dqopt(sb);
2806 int cnt;
2807 int ret = 0;
2808
2809 /*
2810 * Now when everything is written we can discard the pagecache so
2811 * that userspace sees the changes.
2812 */
2813 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
2814
2815 if (type != -1 && cnt != type)
2816 continue;
2817
2818 if (!sb_has_quota_active(sb, cnt))
2819 continue;
2820
2821 if (!f2fs_sb_has_quota_ino(sbi))
2822 inode_lock(dqopt->files[cnt]);
2823
2824 /*
2825 * do_quotactl
2826 * f2fs_quota_sync
2827 * f2fs_down_read(quota_sem)
2828 * dquot_writeback_dquots()
2829 * f2fs_dquot_commit
2830 * block_operation
2831 * f2fs_down_read(quota_sem)
2832 */
2833 f2fs_lock_op(sbi);
2834 f2fs_down_read(&sbi->quota_sem);
2835
2836 ret = f2fs_quota_sync_file(sbi, cnt);
2837
2838 f2fs_up_read(&sbi->quota_sem);
2839 f2fs_unlock_op(sbi);
2840
2841 if (!f2fs_sb_has_quota_ino(sbi))
2842 inode_unlock(dqopt->files[cnt]);
2843
2844 if (ret)
2845 break;
2846 }
2847 return ret;
2848}
2849
2850static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2851 const struct path *path)
2852{
2853 struct inode *inode;
2854 int err;
2855
2856 /* if quota sysfile exists, deny enabling quota with specific file */
2857 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2858 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2859 return -EBUSY;
2860 }
2861
2862 err = f2fs_quota_sync(sb, type);
2863 if (err)
2864 return err;
2865
2866 err = dquot_quota_on(sb, type, format_id, path);
2867 if (err)
2868 return err;
2869
2870 inode = d_inode(path->dentry);
2871
2872 inode_lock(inode);
2873 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
2874 f2fs_set_inode_flags(inode);
2875 inode_unlock(inode);
2876 f2fs_mark_inode_dirty_sync(inode, false);
2877
2878 return 0;
2879}
2880
2881static int __f2fs_quota_off(struct super_block *sb, int type)
2882{
2883 struct inode *inode = sb_dqopt(sb)->files[type];
2884 int err;
2885
2886 if (!inode || !igrab(inode))
2887 return dquot_quota_off(sb, type);
2888
2889 err = f2fs_quota_sync(sb, type);
2890 if (err)
2891 goto out_put;
2892
2893 err = dquot_quota_off(sb, type);
2894 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
2895 goto out_put;
2896
2897 inode_lock(inode);
2898 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
2899 f2fs_set_inode_flags(inode);
2900 inode_unlock(inode);
2901 f2fs_mark_inode_dirty_sync(inode, false);
2902out_put:
2903 iput(inode);
2904 return err;
2905}
2906
2907static int f2fs_quota_off(struct super_block *sb, int type)
2908{
2909 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2910 int err;
2911
2912 err = __f2fs_quota_off(sb, type);
2913
2914 /*
2915 * quotactl can shutdown journalled quota, result in inconsistence
2916 * between quota record and fs data by following updates, tag the
2917 * flag to let fsck be aware of it.
2918 */
2919 if (is_journalled_quota(sbi))
2920 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2921 return err;
2922}
2923
2924void f2fs_quota_off_umount(struct super_block *sb)
2925{
2926 int type;
2927 int err;
2928
2929 for (type = 0; type < MAXQUOTAS; type++) {
2930 err = __f2fs_quota_off(sb, type);
2931 if (err) {
2932 int ret = dquot_quota_off(sb, type);
2933
2934 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2935 type, err, ret);
2936 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2937 }
2938 }
2939 /*
2940 * In case of checkpoint=disable, we must flush quota blocks.
2941 * This can cause NULL exception for node_inode in end_io, since
2942 * put_super already dropped it.
2943 */
2944 sync_filesystem(sb);
2945}
2946
2947static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2948{
2949 struct quota_info *dqopt = sb_dqopt(sb);
2950 int type;
2951
2952 for (type = 0; type < MAXQUOTAS; type++) {
2953 if (!dqopt->files[type])
2954 continue;
2955 f2fs_inode_synced(dqopt->files[type]);
2956 }
2957}
2958
2959static int f2fs_dquot_commit(struct dquot *dquot)
2960{
2961 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2962 int ret;
2963
2964 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
2965 ret = dquot_commit(dquot);
2966 if (ret < 0)
2967 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2968 f2fs_up_read(&sbi->quota_sem);
2969 return ret;
2970}
2971
2972static int f2fs_dquot_acquire(struct dquot *dquot)
2973{
2974 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2975 int ret;
2976
2977 f2fs_down_read(&sbi->quota_sem);
2978 ret = dquot_acquire(dquot);
2979 if (ret < 0)
2980 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2981 f2fs_up_read(&sbi->quota_sem);
2982 return ret;
2983}
2984
2985static int f2fs_dquot_release(struct dquot *dquot)
2986{
2987 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2988 int ret = dquot_release(dquot);
2989
2990 if (ret < 0)
2991 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2992 return ret;
2993}
2994
2995static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2996{
2997 struct super_block *sb = dquot->dq_sb;
2998 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2999 int ret = dquot_mark_dquot_dirty(dquot);
3000
3001 /* if we are using journalled quota */
3002 if (is_journalled_quota(sbi))
3003 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
3004
3005 return ret;
3006}
3007
3008static int f2fs_dquot_commit_info(struct super_block *sb, int type)
3009{
3010 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3011 int ret = dquot_commit_info(sb, type);
3012
3013 if (ret < 0)
3014 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
3015 return ret;
3016}
3017
3018static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
3019{
3020 *projid = F2FS_I(inode)->i_projid;
3021 return 0;
3022}
3023
3024static const struct dquot_operations f2fs_quota_operations = {
3025 .get_reserved_space = f2fs_get_reserved_space,
3026 .write_dquot = f2fs_dquot_commit,
3027 .acquire_dquot = f2fs_dquot_acquire,
3028 .release_dquot = f2fs_dquot_release,
3029 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
3030 .write_info = f2fs_dquot_commit_info,
3031 .alloc_dquot = dquot_alloc,
3032 .destroy_dquot = dquot_destroy,
3033 .get_projid = f2fs_get_projid,
3034 .get_next_id = dquot_get_next_id,
3035};
3036
3037static const struct quotactl_ops f2fs_quotactl_ops = {
3038 .quota_on = f2fs_quota_on,
3039 .quota_off = f2fs_quota_off,
3040 .quota_sync = f2fs_quota_sync,
3041 .get_state = dquot_get_state,
3042 .set_info = dquot_set_dqinfo,
3043 .get_dqblk = dquot_get_dqblk,
3044 .set_dqblk = dquot_set_dqblk,
3045 .get_nextdqblk = dquot_get_next_dqblk,
3046};
3047#else
3048int f2fs_dquot_initialize(struct inode *inode)
3049{
3050 return 0;
3051}
3052
3053int f2fs_quota_sync(struct super_block *sb, int type)
3054{
3055 return 0;
3056}
3057
3058void f2fs_quota_off_umount(struct super_block *sb)
3059{
3060}
3061#endif
3062
3063static const struct super_operations f2fs_sops = {
3064 .alloc_inode = f2fs_alloc_inode,
3065 .free_inode = f2fs_free_inode,
3066 .drop_inode = f2fs_drop_inode,
3067 .write_inode = f2fs_write_inode,
3068 .dirty_inode = f2fs_dirty_inode,
3069 .show_options = f2fs_show_options,
3070#ifdef CONFIG_QUOTA
3071 .quota_read = f2fs_quota_read,
3072 .quota_write = f2fs_quota_write,
3073 .get_dquots = f2fs_get_dquots,
3074#endif
3075 .evict_inode = f2fs_evict_inode,
3076 .put_super = f2fs_put_super,
3077 .sync_fs = f2fs_sync_fs,
3078 .freeze_fs = f2fs_freeze,
3079 .unfreeze_fs = f2fs_unfreeze,
3080 .statfs = f2fs_statfs,
3081 .remount_fs = f2fs_remount,
3082};
3083
3084#ifdef CONFIG_FS_ENCRYPTION
3085static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
3086{
3087 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
3088 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
3089 ctx, len, NULL);
3090}
3091
3092static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
3093 void *fs_data)
3094{
3095 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3096
3097 /*
3098 * Encrypting the root directory is not allowed because fsck
3099 * expects lost+found directory to exist and remain unencrypted
3100 * if LOST_FOUND feature is enabled.
3101 *
3102 */
3103 if (f2fs_sb_has_lost_found(sbi) &&
3104 inode->i_ino == F2FS_ROOT_INO(sbi))
3105 return -EPERM;
3106
3107 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
3108 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
3109 ctx, len, fs_data, XATTR_CREATE);
3110}
3111
3112static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
3113{
3114 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy;
3115}
3116
3117static bool f2fs_has_stable_inodes(struct super_block *sb)
3118{
3119 return true;
3120}
3121
3122static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
3123 int *ino_bits_ret, int *lblk_bits_ret)
3124{
3125 *ino_bits_ret = 8 * sizeof(nid_t);
3126 *lblk_bits_ret = 8 * sizeof(block_t);
3127}
3128
3129static struct block_device **f2fs_get_devices(struct super_block *sb,
3130 unsigned int *num_devs)
3131{
3132 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3133 struct block_device **devs;
3134 int i;
3135
3136 if (!f2fs_is_multi_device(sbi))
3137 return NULL;
3138
3139 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL);
3140 if (!devs)
3141 return ERR_PTR(-ENOMEM);
3142
3143 for (i = 0; i < sbi->s_ndevs; i++)
3144 devs[i] = FDEV(i).bdev;
3145 *num_devs = sbi->s_ndevs;
3146 return devs;
3147}
3148
3149static const struct fscrypt_operations f2fs_cryptops = {
3150 .key_prefix = "f2fs:",
3151 .get_context = f2fs_get_context,
3152 .set_context = f2fs_set_context,
3153 .get_dummy_policy = f2fs_get_dummy_policy,
3154 .empty_dir = f2fs_empty_dir,
3155 .has_stable_inodes = f2fs_has_stable_inodes,
3156 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
3157 .get_devices = f2fs_get_devices,
3158};
3159#endif
3160
3161static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
3162 u64 ino, u32 generation)
3163{
3164 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3165 struct inode *inode;
3166
3167 if (f2fs_check_nid_range(sbi, ino))
3168 return ERR_PTR(-ESTALE);
3169
3170 /*
3171 * f2fs_iget isn't quite right if the inode is currently unallocated!
3172 * However f2fs_iget currently does appropriate checks to handle stale
3173 * inodes so everything is OK.
3174 */
3175 inode = f2fs_iget(sb, ino);
3176 if (IS_ERR(inode))
3177 return ERR_CAST(inode);
3178 if (unlikely(generation && inode->i_generation != generation)) {
3179 /* we didn't find the right inode.. */
3180 iput(inode);
3181 return ERR_PTR(-ESTALE);
3182 }
3183 return inode;
3184}
3185
3186static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
3187 int fh_len, int fh_type)
3188{
3189 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
3190 f2fs_nfs_get_inode);
3191}
3192
3193static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
3194 int fh_len, int fh_type)
3195{
3196 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
3197 f2fs_nfs_get_inode);
3198}
3199
3200static const struct export_operations f2fs_export_ops = {
3201 .fh_to_dentry = f2fs_fh_to_dentry,
3202 .fh_to_parent = f2fs_fh_to_parent,
3203 .get_parent = f2fs_get_parent,
3204};
3205
3206loff_t max_file_blocks(struct inode *inode)
3207{
3208 loff_t result = 0;
3209 loff_t leaf_count;
3210
3211 /*
3212 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
3213 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
3214 * space in inode.i_addr, it will be more safe to reassign
3215 * result as zero.
3216 */
3217
3218 if (inode && f2fs_compressed_file(inode))
3219 leaf_count = ADDRS_PER_BLOCK(inode);
3220 else
3221 leaf_count = DEF_ADDRS_PER_BLOCK;
3222
3223 /* two direct node blocks */
3224 result += (leaf_count * 2);
3225
3226 /* two indirect node blocks */
3227 leaf_count *= NIDS_PER_BLOCK;
3228 result += (leaf_count * 2);
3229
3230 /* one double indirect node block */
3231 leaf_count *= NIDS_PER_BLOCK;
3232 result += leaf_count;
3233
3234 return result;
3235}
3236
3237static int __f2fs_commit_super(struct buffer_head *bh,
3238 struct f2fs_super_block *super)
3239{
3240 lock_buffer(bh);
3241 if (super)
3242 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
3243 set_buffer_dirty(bh);
3244 unlock_buffer(bh);
3245
3246 /* it's rare case, we can do fua all the time */
3247 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
3248}
3249
3250static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
3251 struct buffer_head *bh)
3252{
3253 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3254 (bh->b_data + F2FS_SUPER_OFFSET);
3255 struct super_block *sb = sbi->sb;
3256 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
3257 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
3258 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
3259 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
3260 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
3261 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
3262 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
3263 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
3264 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
3265 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
3266 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3267 u32 segment_count = le32_to_cpu(raw_super->segment_count);
3268 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3269 u64 main_end_blkaddr = main_blkaddr +
3270 (segment_count_main << log_blocks_per_seg);
3271 u64 seg_end_blkaddr = segment0_blkaddr +
3272 (segment_count << log_blocks_per_seg);
3273
3274 if (segment0_blkaddr != cp_blkaddr) {
3275 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
3276 segment0_blkaddr, cp_blkaddr);
3277 return true;
3278 }
3279
3280 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
3281 sit_blkaddr) {
3282 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
3283 cp_blkaddr, sit_blkaddr,
3284 segment_count_ckpt << log_blocks_per_seg);
3285 return true;
3286 }
3287
3288 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
3289 nat_blkaddr) {
3290 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
3291 sit_blkaddr, nat_blkaddr,
3292 segment_count_sit << log_blocks_per_seg);
3293 return true;
3294 }
3295
3296 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
3297 ssa_blkaddr) {
3298 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
3299 nat_blkaddr, ssa_blkaddr,
3300 segment_count_nat << log_blocks_per_seg);
3301 return true;
3302 }
3303
3304 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
3305 main_blkaddr) {
3306 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
3307 ssa_blkaddr, main_blkaddr,
3308 segment_count_ssa << log_blocks_per_seg);
3309 return true;
3310 }
3311
3312 if (main_end_blkaddr > seg_end_blkaddr) {
3313 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)",
3314 main_blkaddr, seg_end_blkaddr,
3315 segment_count_main << log_blocks_per_seg);
3316 return true;
3317 } else if (main_end_blkaddr < seg_end_blkaddr) {
3318 int err = 0;
3319 char *res;
3320
3321 /* fix in-memory information all the time */
3322 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
3323 segment0_blkaddr) >> log_blocks_per_seg);
3324
3325 if (f2fs_readonly(sb) || f2fs_hw_is_readonly(sbi)) {
3326 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3327 res = "internally";
3328 } else {
3329 err = __f2fs_commit_super(bh, NULL);
3330 res = err ? "failed" : "done";
3331 }
3332 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)",
3333 res, main_blkaddr, seg_end_blkaddr,
3334 segment_count_main << log_blocks_per_seg);
3335 if (err)
3336 return true;
3337 }
3338 return false;
3339}
3340
3341static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
3342 struct buffer_head *bh)
3343{
3344 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main;
3345 block_t total_sections, blocks_per_seg;
3346 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3347 (bh->b_data + F2FS_SUPER_OFFSET);
3348 size_t crc_offset = 0;
3349 __u32 crc = 0;
3350
3351 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
3352 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
3353 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
3354 return -EINVAL;
3355 }
3356
3357 /* Check checksum_offset and crc in superblock */
3358 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
3359 crc_offset = le32_to_cpu(raw_super->checksum_offset);
3360 if (crc_offset !=
3361 offsetof(struct f2fs_super_block, crc)) {
3362 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
3363 crc_offset);
3364 return -EFSCORRUPTED;
3365 }
3366 crc = le32_to_cpu(raw_super->crc);
3367 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
3368 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
3369 return -EFSCORRUPTED;
3370 }
3371 }
3372
3373 /* Currently, support only 4KB block size */
3374 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) {
3375 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u",
3376 le32_to_cpu(raw_super->log_blocksize),
3377 F2FS_BLKSIZE_BITS);
3378 return -EFSCORRUPTED;
3379 }
3380
3381 /* check log blocks per segment */
3382 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
3383 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
3384 le32_to_cpu(raw_super->log_blocks_per_seg));
3385 return -EFSCORRUPTED;
3386 }
3387
3388 /* Currently, support 512/1024/2048/4096 bytes sector size */
3389 if (le32_to_cpu(raw_super->log_sectorsize) >
3390 F2FS_MAX_LOG_SECTOR_SIZE ||
3391 le32_to_cpu(raw_super->log_sectorsize) <
3392 F2FS_MIN_LOG_SECTOR_SIZE) {
3393 f2fs_info(sbi, "Invalid log sectorsize (%u)",
3394 le32_to_cpu(raw_super->log_sectorsize));
3395 return -EFSCORRUPTED;
3396 }
3397 if (le32_to_cpu(raw_super->log_sectors_per_block) +
3398 le32_to_cpu(raw_super->log_sectorsize) !=
3399 F2FS_MAX_LOG_SECTOR_SIZE) {
3400 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
3401 le32_to_cpu(raw_super->log_sectors_per_block),
3402 le32_to_cpu(raw_super->log_sectorsize));
3403 return -EFSCORRUPTED;
3404 }
3405
3406 segment_count = le32_to_cpu(raw_super->segment_count);
3407 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3408 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3409 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3410 total_sections = le32_to_cpu(raw_super->section_count);
3411
3412 /* blocks_per_seg should be 512, given the above check */
3413 blocks_per_seg = BIT(le32_to_cpu(raw_super->log_blocks_per_seg));
3414
3415 if (segment_count > F2FS_MAX_SEGMENT ||
3416 segment_count < F2FS_MIN_SEGMENTS) {
3417 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
3418 return -EFSCORRUPTED;
3419 }
3420
3421 if (total_sections > segment_count_main || total_sections < 1 ||
3422 segs_per_sec > segment_count || !segs_per_sec) {
3423 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
3424 segment_count, total_sections, segs_per_sec);
3425 return -EFSCORRUPTED;
3426 }
3427
3428 if (segment_count_main != total_sections * segs_per_sec) {
3429 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)",
3430 segment_count_main, total_sections, segs_per_sec);
3431 return -EFSCORRUPTED;
3432 }
3433
3434 if ((segment_count / segs_per_sec) < total_sections) {
3435 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
3436 segment_count, segs_per_sec, total_sections);
3437 return -EFSCORRUPTED;
3438 }
3439
3440 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
3441 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
3442 segment_count, le64_to_cpu(raw_super->block_count));
3443 return -EFSCORRUPTED;
3444 }
3445
3446 if (RDEV(0).path[0]) {
3447 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
3448 int i = 1;
3449
3450 while (i < MAX_DEVICES && RDEV(i).path[0]) {
3451 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
3452 i++;
3453 }
3454 if (segment_count != dev_seg_count) {
3455 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
3456 segment_count, dev_seg_count);
3457 return -EFSCORRUPTED;
3458 }
3459 } else {
3460 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) &&
3461 !bdev_is_zoned(sbi->sb->s_bdev)) {
3462 f2fs_info(sbi, "Zoned block device path is missing");
3463 return -EFSCORRUPTED;
3464 }
3465 }
3466
3467 if (secs_per_zone > total_sections || !secs_per_zone) {
3468 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
3469 secs_per_zone, total_sections);
3470 return -EFSCORRUPTED;
3471 }
3472 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
3473 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
3474 (le32_to_cpu(raw_super->extension_count) +
3475 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
3476 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
3477 le32_to_cpu(raw_super->extension_count),
3478 raw_super->hot_ext_count,
3479 F2FS_MAX_EXTENSION);
3480 return -EFSCORRUPTED;
3481 }
3482
3483 if (le32_to_cpu(raw_super->cp_payload) >=
3484 (blocks_per_seg - F2FS_CP_PACKS -
3485 NR_CURSEG_PERSIST_TYPE)) {
3486 f2fs_info(sbi, "Insane cp_payload (%u >= %u)",
3487 le32_to_cpu(raw_super->cp_payload),
3488 blocks_per_seg - F2FS_CP_PACKS -
3489 NR_CURSEG_PERSIST_TYPE);
3490 return -EFSCORRUPTED;
3491 }
3492
3493 /* check reserved ino info */
3494 if (le32_to_cpu(raw_super->node_ino) != 1 ||
3495 le32_to_cpu(raw_super->meta_ino) != 2 ||
3496 le32_to_cpu(raw_super->root_ino) != 3) {
3497 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
3498 le32_to_cpu(raw_super->node_ino),
3499 le32_to_cpu(raw_super->meta_ino),
3500 le32_to_cpu(raw_super->root_ino));
3501 return -EFSCORRUPTED;
3502 }
3503
3504 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
3505 if (sanity_check_area_boundary(sbi, bh))
3506 return -EFSCORRUPTED;
3507
3508 return 0;
3509}
3510
3511int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
3512{
3513 unsigned int total, fsmeta;
3514 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3515 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3516 unsigned int ovp_segments, reserved_segments;
3517 unsigned int main_segs, blocks_per_seg;
3518 unsigned int sit_segs, nat_segs;
3519 unsigned int sit_bitmap_size, nat_bitmap_size;
3520 unsigned int log_blocks_per_seg;
3521 unsigned int segment_count_main;
3522 unsigned int cp_pack_start_sum, cp_payload;
3523 block_t user_block_count, valid_user_blocks;
3524 block_t avail_node_count, valid_node_count;
3525 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks;
3526 int i, j;
3527
3528 total = le32_to_cpu(raw_super->segment_count);
3529 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
3530 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
3531 fsmeta += sit_segs;
3532 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
3533 fsmeta += nat_segs;
3534 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
3535 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
3536
3537 if (unlikely(fsmeta >= total))
3538 return 1;
3539
3540 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
3541 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
3542
3543 if (!f2fs_sb_has_readonly(sbi) &&
3544 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
3545 ovp_segments == 0 || reserved_segments == 0)) {
3546 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
3547 return 1;
3548 }
3549 user_block_count = le64_to_cpu(ckpt->user_block_count);
3550 segment_count_main = le32_to_cpu(raw_super->segment_count_main) +
3551 (f2fs_sb_has_readonly(sbi) ? 1 : 0);
3552 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3553 if (!user_block_count || user_block_count >=
3554 segment_count_main << log_blocks_per_seg) {
3555 f2fs_err(sbi, "Wrong user_block_count: %u",
3556 user_block_count);
3557 return 1;
3558 }
3559
3560 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
3561 if (valid_user_blocks > user_block_count) {
3562 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
3563 valid_user_blocks, user_block_count);
3564 return 1;
3565 }
3566
3567 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
3568 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
3569 if (valid_node_count > avail_node_count) {
3570 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
3571 valid_node_count, avail_node_count);
3572 return 1;
3573 }
3574
3575 main_segs = le32_to_cpu(raw_super->segment_count_main);
3576 blocks_per_seg = sbi->blocks_per_seg;
3577
3578 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3579 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
3580 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
3581 return 1;
3582
3583 if (f2fs_sb_has_readonly(sbi))
3584 goto check_data;
3585
3586 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
3587 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3588 le32_to_cpu(ckpt->cur_node_segno[j])) {
3589 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
3590 i, j,
3591 le32_to_cpu(ckpt->cur_node_segno[i]));
3592 return 1;
3593 }
3594 }
3595 }
3596check_data:
3597 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
3598 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
3599 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
3600 return 1;
3601
3602 if (f2fs_sb_has_readonly(sbi))
3603 goto skip_cross;
3604
3605 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
3606 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
3607 le32_to_cpu(ckpt->cur_data_segno[j])) {
3608 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
3609 i, j,
3610 le32_to_cpu(ckpt->cur_data_segno[i]));
3611 return 1;
3612 }
3613 }
3614 }
3615 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3616 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
3617 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3618 le32_to_cpu(ckpt->cur_data_segno[j])) {
3619 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
3620 i, j,
3621 le32_to_cpu(ckpt->cur_node_segno[i]));
3622 return 1;
3623 }
3624 }
3625 }
3626skip_cross:
3627 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
3628 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
3629
3630 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
3631 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
3632 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
3633 sit_bitmap_size, nat_bitmap_size);
3634 return 1;
3635 }
3636
3637 cp_pack_start_sum = __start_sum_addr(sbi);
3638 cp_payload = __cp_payload(sbi);
3639 if (cp_pack_start_sum < cp_payload + 1 ||
3640 cp_pack_start_sum > blocks_per_seg - 1 -
3641 NR_CURSEG_PERSIST_TYPE) {
3642 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
3643 cp_pack_start_sum);
3644 return 1;
3645 }
3646
3647 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
3648 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
3649 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
3650 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
3651 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
3652 le32_to_cpu(ckpt->checksum_offset));
3653 return 1;
3654 }
3655
3656 nat_blocks = nat_segs << log_blocks_per_seg;
3657 nat_bits_bytes = nat_blocks / BITS_PER_BYTE;
3658 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
3659 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) &&
3660 (cp_payload + F2FS_CP_PACKS +
3661 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) {
3662 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)",
3663 cp_payload, nat_bits_blocks);
3664 return 1;
3665 }
3666
3667 if (unlikely(f2fs_cp_error(sbi))) {
3668 f2fs_err(sbi, "A bug case: need to run fsck");
3669 return 1;
3670 }
3671 return 0;
3672}
3673
3674static void init_sb_info(struct f2fs_sb_info *sbi)
3675{
3676 struct f2fs_super_block *raw_super = sbi->raw_super;
3677 int i;
3678
3679 sbi->log_sectors_per_block =
3680 le32_to_cpu(raw_super->log_sectors_per_block);
3681 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
3682 sbi->blocksize = BIT(sbi->log_blocksize);
3683 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3684 sbi->blocks_per_seg = BIT(sbi->log_blocks_per_seg);
3685 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3686 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3687 sbi->total_sections = le32_to_cpu(raw_super->section_count);
3688 sbi->total_node_count =
3689 (le32_to_cpu(raw_super->segment_count_nat) / 2)
3690 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
3691 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino);
3692 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino);
3693 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino);
3694 sbi->cur_victim_sec = NULL_SECNO;
3695 sbi->gc_mode = GC_NORMAL;
3696 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
3697 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
3698 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
3699 sbi->migration_granularity = sbi->segs_per_sec;
3700 sbi->seq_file_ra_mul = MIN_RA_MUL;
3701 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE;
3702 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE;
3703 spin_lock_init(&sbi->gc_remaining_trials_lock);
3704 atomic64_set(&sbi->current_atomic_write, 0);
3705
3706 sbi->dir_level = DEF_DIR_LEVEL;
3707 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
3708 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
3709 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
3710 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
3711 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
3712 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
3713 DEF_UMOUNT_DISCARD_TIMEOUT;
3714 clear_sbi_flag(sbi, SBI_NEED_FSCK);
3715
3716 for (i = 0; i < NR_COUNT_TYPE; i++)
3717 atomic_set(&sbi->nr_pages[i], 0);
3718
3719 for (i = 0; i < META; i++)
3720 atomic_set(&sbi->wb_sync_req[i], 0);
3721
3722 INIT_LIST_HEAD(&sbi->s_list);
3723 mutex_init(&sbi->umount_mutex);
3724 init_f2fs_rwsem(&sbi->io_order_lock);
3725 spin_lock_init(&sbi->cp_lock);
3726
3727 sbi->dirty_device = 0;
3728 spin_lock_init(&sbi->dev_lock);
3729
3730 init_f2fs_rwsem(&sbi->sb_lock);
3731 init_f2fs_rwsem(&sbi->pin_sem);
3732}
3733
3734static int init_percpu_info(struct f2fs_sb_info *sbi)
3735{
3736 int err;
3737
3738 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
3739 if (err)
3740 return err;
3741
3742 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL);
3743 if (err)
3744 goto err_valid_block;
3745
3746 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
3747 GFP_KERNEL);
3748 if (err)
3749 goto err_node_block;
3750 return 0;
3751
3752err_node_block:
3753 percpu_counter_destroy(&sbi->rf_node_block_count);
3754err_valid_block:
3755 percpu_counter_destroy(&sbi->alloc_valid_block_count);
3756 return err;
3757}
3758
3759#ifdef CONFIG_BLK_DEV_ZONED
3760
3761struct f2fs_report_zones_args {
3762 struct f2fs_sb_info *sbi;
3763 struct f2fs_dev_info *dev;
3764};
3765
3766static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
3767 void *data)
3768{
3769 struct f2fs_report_zones_args *rz_args = data;
3770 block_t unusable_blocks = (zone->len - zone->capacity) >>
3771 F2FS_LOG_SECTORS_PER_BLOCK;
3772
3773 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
3774 return 0;
3775
3776 set_bit(idx, rz_args->dev->blkz_seq);
3777 if (!rz_args->sbi->unusable_blocks_per_sec) {
3778 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks;
3779 return 0;
3780 }
3781 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) {
3782 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n");
3783 return -EINVAL;
3784 }
3785 return 0;
3786}
3787
3788static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
3789{
3790 struct block_device *bdev = FDEV(devi).bdev;
3791 sector_t nr_sectors = bdev_nr_sectors(bdev);
3792 struct f2fs_report_zones_args rep_zone_arg;
3793 u64 zone_sectors;
3794 int ret;
3795
3796 if (!f2fs_sb_has_blkzoned(sbi))
3797 return 0;
3798
3799 zone_sectors = bdev_zone_sectors(bdev);
3800 if (!is_power_of_2(zone_sectors)) {
3801 f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n");
3802 return -EINVAL;
3803 }
3804
3805 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
3806 SECTOR_TO_BLOCK(zone_sectors))
3807 return -EINVAL;
3808 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors);
3809 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3810 __ilog2_u32(sbi->blocks_per_blkz))
3811 return -EINVAL;
3812 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3813 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3814 sbi->log_blocks_per_blkz;
3815 if (nr_sectors & (zone_sectors - 1))
3816 FDEV(devi).nr_blkz++;
3817
3818 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
3819 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3820 * sizeof(unsigned long),
3821 GFP_KERNEL);
3822 if (!FDEV(devi).blkz_seq)
3823 return -ENOMEM;
3824
3825 rep_zone_arg.sbi = sbi;
3826 rep_zone_arg.dev = &FDEV(devi);
3827
3828 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3829 &rep_zone_arg);
3830 if (ret < 0)
3831 return ret;
3832 return 0;
3833}
3834#endif
3835
3836/*
3837 * Read f2fs raw super block.
3838 * Because we have two copies of super block, so read both of them
3839 * to get the first valid one. If any one of them is broken, we pass
3840 * them recovery flag back to the caller.
3841 */
3842static int read_raw_super_block(struct f2fs_sb_info *sbi,
3843 struct f2fs_super_block **raw_super,
3844 int *valid_super_block, int *recovery)
3845{
3846 struct super_block *sb = sbi->sb;
3847 int block;
3848 struct buffer_head *bh;
3849 struct f2fs_super_block *super;
3850 int err = 0;
3851
3852 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3853 if (!super)
3854 return -ENOMEM;
3855
3856 for (block = 0; block < 2; block++) {
3857 bh = sb_bread(sb, block);
3858 if (!bh) {
3859 f2fs_err(sbi, "Unable to read %dth superblock",
3860 block + 1);
3861 err = -EIO;
3862 *recovery = 1;
3863 continue;
3864 }
3865
3866 /* sanity checking of raw super */
3867 err = sanity_check_raw_super(sbi, bh);
3868 if (err) {
3869 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3870 block + 1);
3871 brelse(bh);
3872 *recovery = 1;
3873 continue;
3874 }
3875
3876 if (!*raw_super) {
3877 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3878 sizeof(*super));
3879 *valid_super_block = block;
3880 *raw_super = super;
3881 }
3882 brelse(bh);
3883 }
3884
3885 /* No valid superblock */
3886 if (!*raw_super)
3887 kfree(super);
3888 else
3889 err = 0;
3890
3891 return err;
3892}
3893
3894int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
3895{
3896 struct buffer_head *bh;
3897 __u32 crc = 0;
3898 int err;
3899
3900 if ((recover && f2fs_readonly(sbi->sb)) ||
3901 f2fs_hw_is_readonly(sbi)) {
3902 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3903 return -EROFS;
3904 }
3905
3906 /* we should update superblock crc here */
3907 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
3908 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3909 offsetof(struct f2fs_super_block, crc));
3910 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3911 }
3912
3913 /* write back-up superblock first */
3914 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
3915 if (!bh)
3916 return -EIO;
3917 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3918 brelse(bh);
3919
3920 /* if we are in recovery path, skip writing valid superblock */
3921 if (recover || err)
3922 return err;
3923
3924 /* write current valid superblock */
3925 bh = sb_bread(sbi->sb, sbi->valid_super_block);
3926 if (!bh)
3927 return -EIO;
3928 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3929 brelse(bh);
3930 return err;
3931}
3932
3933void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason)
3934{
3935 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3936 int err;
3937
3938 f2fs_down_write(&sbi->sb_lock);
3939
3940 if (raw_super->s_stop_reason[reason] < GENMASK(BITS_PER_BYTE - 1, 0))
3941 raw_super->s_stop_reason[reason]++;
3942
3943 err = f2fs_commit_super(sbi, false);
3944 if (err)
3945 f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d",
3946 reason, err);
3947 f2fs_up_write(&sbi->sb_lock);
3948}
3949
3950void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag)
3951{
3952 spin_lock(&sbi->error_lock);
3953 if (!test_bit(flag, (unsigned long *)sbi->errors)) {
3954 set_bit(flag, (unsigned long *)sbi->errors);
3955 sbi->error_dirty = true;
3956 }
3957 spin_unlock(&sbi->error_lock);
3958}
3959
3960static bool f2fs_update_errors(struct f2fs_sb_info *sbi)
3961{
3962 bool need_update = false;
3963
3964 spin_lock(&sbi->error_lock);
3965 if (sbi->error_dirty) {
3966 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors,
3967 MAX_F2FS_ERRORS);
3968 sbi->error_dirty = false;
3969 need_update = true;
3970 }
3971 spin_unlock(&sbi->error_lock);
3972
3973 return need_update;
3974}
3975
3976void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error)
3977{
3978 int err;
3979
3980 f2fs_save_errors(sbi, error);
3981
3982 f2fs_down_write(&sbi->sb_lock);
3983
3984 if (!f2fs_update_errors(sbi))
3985 goto out_unlock;
3986
3987 err = f2fs_commit_super(sbi, false);
3988 if (err)
3989 f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d",
3990 error, err);
3991out_unlock:
3992 f2fs_up_write(&sbi->sb_lock);
3993}
3994
3995static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3996{
3997 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3998 unsigned int max_devices = MAX_DEVICES;
3999 unsigned int logical_blksize;
4000 int i;
4001
4002 /* Initialize single device information */
4003 if (!RDEV(0).path[0]) {
4004 if (!bdev_is_zoned(sbi->sb->s_bdev))
4005 return 0;
4006 max_devices = 1;
4007 }
4008
4009 /*
4010 * Initialize multiple devices information, or single
4011 * zoned block device information.
4012 */
4013 sbi->devs = f2fs_kzalloc(sbi,
4014 array_size(max_devices,
4015 sizeof(struct f2fs_dev_info)),
4016 GFP_KERNEL);
4017 if (!sbi->devs)
4018 return -ENOMEM;
4019
4020 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev);
4021 sbi->aligned_blksize = true;
4022
4023 for (i = 0; i < max_devices; i++) {
4024
4025 if (i > 0 && !RDEV(i).path[0])
4026 break;
4027
4028 if (max_devices == 1) {
4029 /* Single zoned block device mount */
4030 FDEV(0).bdev =
4031 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
4032 sbi->sb->s_mode, sbi->sb->s_type);
4033 } else {
4034 /* Multi-device mount */
4035 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
4036 FDEV(i).total_segments =
4037 le32_to_cpu(RDEV(i).total_segments);
4038 if (i == 0) {
4039 FDEV(i).start_blk = 0;
4040 FDEV(i).end_blk = FDEV(i).start_blk +
4041 (FDEV(i).total_segments <<
4042 sbi->log_blocks_per_seg) - 1 +
4043 le32_to_cpu(raw_super->segment0_blkaddr);
4044 } else {
4045 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
4046 FDEV(i).end_blk = FDEV(i).start_blk +
4047 (FDEV(i).total_segments <<
4048 sbi->log_blocks_per_seg) - 1;
4049 }
4050 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
4051 sbi->sb->s_mode, sbi->sb->s_type);
4052 }
4053 if (IS_ERR(FDEV(i).bdev))
4054 return PTR_ERR(FDEV(i).bdev);
4055
4056 /* to release errored devices */
4057 sbi->s_ndevs = i + 1;
4058
4059 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev))
4060 sbi->aligned_blksize = false;
4061
4062#ifdef CONFIG_BLK_DEV_ZONED
4063 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
4064 !f2fs_sb_has_blkzoned(sbi)) {
4065 f2fs_err(sbi, "Zoned block device feature not enabled");
4066 return -EINVAL;
4067 }
4068 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
4069 if (init_blkz_info(sbi, i)) {
4070 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
4071 return -EINVAL;
4072 }
4073 if (max_devices == 1)
4074 break;
4075 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
4076 i, FDEV(i).path,
4077 FDEV(i).total_segments,
4078 FDEV(i).start_blk, FDEV(i).end_blk,
4079 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
4080 "Host-aware" : "Host-managed");
4081 continue;
4082 }
4083#endif
4084 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
4085 i, FDEV(i).path,
4086 FDEV(i).total_segments,
4087 FDEV(i).start_blk, FDEV(i).end_blk);
4088 }
4089 f2fs_info(sbi,
4090 "IO Block Size: %8ld KB", F2FS_IO_SIZE_KB(sbi));
4091 return 0;
4092}
4093
4094static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
4095{
4096#if IS_ENABLED(CONFIG_UNICODE)
4097 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) {
4098 const struct f2fs_sb_encodings *encoding_info;
4099 struct unicode_map *encoding;
4100 __u16 encoding_flags;
4101
4102 encoding_info = f2fs_sb_read_encoding(sbi->raw_super);
4103 if (!encoding_info) {
4104 f2fs_err(sbi,
4105 "Encoding requested by superblock is unknown");
4106 return -EINVAL;
4107 }
4108
4109 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags);
4110 encoding = utf8_load(encoding_info->version);
4111 if (IS_ERR(encoding)) {
4112 f2fs_err(sbi,
4113 "can't mount with superblock charset: %s-%u.%u.%u "
4114 "not supported by the kernel. flags: 0x%x.",
4115 encoding_info->name,
4116 unicode_major(encoding_info->version),
4117 unicode_minor(encoding_info->version),
4118 unicode_rev(encoding_info->version),
4119 encoding_flags);
4120 return PTR_ERR(encoding);
4121 }
4122 f2fs_info(sbi, "Using encoding defined by superblock: "
4123 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name,
4124 unicode_major(encoding_info->version),
4125 unicode_minor(encoding_info->version),
4126 unicode_rev(encoding_info->version),
4127 encoding_flags);
4128
4129 sbi->sb->s_encoding = encoding;
4130 sbi->sb->s_encoding_flags = encoding_flags;
4131 }
4132#else
4133 if (f2fs_sb_has_casefold(sbi)) {
4134 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
4135 return -EINVAL;
4136 }
4137#endif
4138 return 0;
4139}
4140
4141static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
4142{
4143 /* adjust parameters according to the volume size */
4144 if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) {
4145 if (f2fs_block_unit_discard(sbi))
4146 SM_I(sbi)->dcc_info->discard_granularity =
4147 MIN_DISCARD_GRANULARITY;
4148 if (!f2fs_lfs_mode(sbi))
4149 SM_I(sbi)->ipu_policy = BIT(F2FS_IPU_FORCE) |
4150 BIT(F2FS_IPU_HONOR_OPU_WRITE);
4151 }
4152
4153 sbi->readdir_ra = true;
4154}
4155
4156static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
4157{
4158 struct f2fs_sb_info *sbi;
4159 struct f2fs_super_block *raw_super;
4160 struct inode *root;
4161 int err;
4162 bool skip_recovery = false, need_fsck = false;
4163 char *options = NULL;
4164 int recovery, i, valid_super_block;
4165 struct curseg_info *seg_i;
4166 int retry_cnt = 1;
4167#ifdef CONFIG_QUOTA
4168 bool quota_enabled = false;
4169#endif
4170
4171try_onemore:
4172 err = -EINVAL;
4173 raw_super = NULL;
4174 valid_super_block = -1;
4175 recovery = 0;
4176
4177 /* allocate memory for f2fs-specific super block info */
4178 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
4179 if (!sbi)
4180 return -ENOMEM;
4181
4182 sbi->sb = sb;
4183
4184 /* initialize locks within allocated memory */
4185 init_f2fs_rwsem(&sbi->gc_lock);
4186 mutex_init(&sbi->writepages);
4187 init_f2fs_rwsem(&sbi->cp_global_sem);
4188 init_f2fs_rwsem(&sbi->node_write);
4189 init_f2fs_rwsem(&sbi->node_change);
4190 spin_lock_init(&sbi->stat_lock);
4191 init_f2fs_rwsem(&sbi->cp_rwsem);
4192 init_f2fs_rwsem(&sbi->quota_sem);
4193 init_waitqueue_head(&sbi->cp_wait);
4194 spin_lock_init(&sbi->error_lock);
4195
4196 for (i = 0; i < NR_INODE_TYPE; i++) {
4197 INIT_LIST_HEAD(&sbi->inode_list[i]);
4198 spin_lock_init(&sbi->inode_lock[i]);
4199 }
4200 mutex_init(&sbi->flush_lock);
4201
4202 /* Load the checksum driver */
4203 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
4204 if (IS_ERR(sbi->s_chksum_driver)) {
4205 f2fs_err(sbi, "Cannot load crc32 driver.");
4206 err = PTR_ERR(sbi->s_chksum_driver);
4207 sbi->s_chksum_driver = NULL;
4208 goto free_sbi;
4209 }
4210
4211 /* set a block size */
4212 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
4213 f2fs_err(sbi, "unable to set blocksize");
4214 goto free_sbi;
4215 }
4216
4217 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
4218 &recovery);
4219 if (err)
4220 goto free_sbi;
4221
4222 sb->s_fs_info = sbi;
4223 sbi->raw_super = raw_super;
4224
4225 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS);
4226
4227 /* precompute checksum seed for metadata */
4228 if (f2fs_sb_has_inode_chksum(sbi))
4229 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
4230 sizeof(raw_super->uuid));
4231
4232 default_options(sbi);
4233 /* parse mount options */
4234 options = kstrdup((const char *)data, GFP_KERNEL);
4235 if (data && !options) {
4236 err = -ENOMEM;
4237 goto free_sb_buf;
4238 }
4239
4240 err = parse_options(sb, options, false);
4241 if (err)
4242 goto free_options;
4243
4244 sb->s_maxbytes = max_file_blocks(NULL) <<
4245 le32_to_cpu(raw_super->log_blocksize);
4246 sb->s_max_links = F2FS_LINK_MAX;
4247
4248 err = f2fs_setup_casefold(sbi);
4249 if (err)
4250 goto free_options;
4251
4252#ifdef CONFIG_QUOTA
4253 sb->dq_op = &f2fs_quota_operations;
4254 sb->s_qcop = &f2fs_quotactl_ops;
4255 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
4256
4257 if (f2fs_sb_has_quota_ino(sbi)) {
4258 for (i = 0; i < MAXQUOTAS; i++) {
4259 if (f2fs_qf_ino(sbi->sb, i))
4260 sbi->nquota_files++;
4261 }
4262 }
4263#endif
4264
4265 sb->s_op = &f2fs_sops;
4266#ifdef CONFIG_FS_ENCRYPTION
4267 sb->s_cop = &f2fs_cryptops;
4268#endif
4269#ifdef CONFIG_FS_VERITY
4270 sb->s_vop = &f2fs_verityops;
4271#endif
4272 sb->s_xattr = f2fs_xattr_handlers;
4273 sb->s_export_op = &f2fs_export_ops;
4274 sb->s_magic = F2FS_SUPER_MAGIC;
4275 sb->s_time_gran = 1;
4276 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
4277 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
4278 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
4279 sb->s_iflags |= SB_I_CGROUPWB;
4280
4281 /* init f2fs-specific super block info */
4282 sbi->valid_super_block = valid_super_block;
4283
4284 /* disallow all the data/node/meta page writes */
4285 set_sbi_flag(sbi, SBI_POR_DOING);
4286
4287 err = f2fs_init_write_merge_io(sbi);
4288 if (err)
4289 goto free_bio_info;
4290
4291 init_sb_info(sbi);
4292
4293 err = f2fs_init_iostat(sbi);
4294 if (err)
4295 goto free_bio_info;
4296
4297 err = init_percpu_info(sbi);
4298 if (err)
4299 goto free_iostat;
4300
4301 if (F2FS_IO_ALIGNED(sbi)) {
4302 sbi->write_io_dummy =
4303 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
4304 if (!sbi->write_io_dummy) {
4305 err = -ENOMEM;
4306 goto free_percpu;
4307 }
4308 }
4309
4310 /* init per sbi slab cache */
4311 err = f2fs_init_xattr_caches(sbi);
4312 if (err)
4313 goto free_io_dummy;
4314 err = f2fs_init_page_array_cache(sbi);
4315 if (err)
4316 goto free_xattr_cache;
4317
4318 /* get an inode for meta space */
4319 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
4320 if (IS_ERR(sbi->meta_inode)) {
4321 f2fs_err(sbi, "Failed to read F2FS meta data inode");
4322 err = PTR_ERR(sbi->meta_inode);
4323 goto free_page_array_cache;
4324 }
4325
4326 err = f2fs_get_valid_checkpoint(sbi);
4327 if (err) {
4328 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
4329 goto free_meta_inode;
4330 }
4331
4332 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
4333 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
4334 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
4335 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4336 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
4337 }
4338
4339 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
4340 set_sbi_flag(sbi, SBI_NEED_FSCK);
4341
4342 /* Initialize device list */
4343 err = f2fs_scan_devices(sbi);
4344 if (err) {
4345 f2fs_err(sbi, "Failed to find devices");
4346 goto free_devices;
4347 }
4348
4349 err = f2fs_init_post_read_wq(sbi);
4350 if (err) {
4351 f2fs_err(sbi, "Failed to initialize post read workqueue");
4352 goto free_devices;
4353 }
4354
4355 sbi->total_valid_node_count =
4356 le32_to_cpu(sbi->ckpt->valid_node_count);
4357 percpu_counter_set(&sbi->total_valid_inode_count,
4358 le32_to_cpu(sbi->ckpt->valid_inode_count));
4359 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
4360 sbi->total_valid_block_count =
4361 le64_to_cpu(sbi->ckpt->valid_block_count);
4362 sbi->last_valid_block_count = sbi->total_valid_block_count;
4363 sbi->reserved_blocks = 0;
4364 sbi->current_reserved_blocks = 0;
4365 limit_reserve_root(sbi);
4366 adjust_unusable_cap_perc(sbi);
4367
4368 f2fs_init_extent_cache_info(sbi);
4369
4370 f2fs_init_ino_entry_info(sbi);
4371
4372 f2fs_init_fsync_node_info(sbi);
4373
4374 /* setup checkpoint request control and start checkpoint issue thread */
4375 f2fs_init_ckpt_req_control(sbi);
4376 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
4377 test_opt(sbi, MERGE_CHECKPOINT)) {
4378 err = f2fs_start_ckpt_thread(sbi);
4379 if (err) {
4380 f2fs_err(sbi,
4381 "Failed to start F2FS issue_checkpoint_thread (%d)",
4382 err);
4383 goto stop_ckpt_thread;
4384 }
4385 }
4386
4387 /* setup f2fs internal modules */
4388 err = f2fs_build_segment_manager(sbi);
4389 if (err) {
4390 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
4391 err);
4392 goto free_sm;
4393 }
4394 err = f2fs_build_node_manager(sbi);
4395 if (err) {
4396 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
4397 err);
4398 goto free_nm;
4399 }
4400
4401 err = adjust_reserved_segment(sbi);
4402 if (err)
4403 goto free_nm;
4404
4405 /* For write statistics */
4406 sbi->sectors_written_start = f2fs_get_sectors_written(sbi);
4407
4408 /* Read accumulated write IO statistics if exists */
4409 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
4410 if (__exist_node_summaries(sbi))
4411 sbi->kbytes_written =
4412 le64_to_cpu(seg_i->journal->info.kbytes_written);
4413
4414 f2fs_build_gc_manager(sbi);
4415
4416 err = f2fs_build_stats(sbi);
4417 if (err)
4418 goto free_nm;
4419
4420 /* get an inode for node space */
4421 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
4422 if (IS_ERR(sbi->node_inode)) {
4423 f2fs_err(sbi, "Failed to read node inode");
4424 err = PTR_ERR(sbi->node_inode);
4425 goto free_stats;
4426 }
4427
4428 /* read root inode and dentry */
4429 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
4430 if (IS_ERR(root)) {
4431 f2fs_err(sbi, "Failed to read root inode");
4432 err = PTR_ERR(root);
4433 goto free_node_inode;
4434 }
4435 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
4436 !root->i_size || !root->i_nlink) {
4437 iput(root);
4438 err = -EINVAL;
4439 goto free_node_inode;
4440 }
4441
4442 sb->s_root = d_make_root(root); /* allocate root dentry */
4443 if (!sb->s_root) {
4444 err = -ENOMEM;
4445 goto free_node_inode;
4446 }
4447
4448 err = f2fs_init_compress_inode(sbi);
4449 if (err)
4450 goto free_root_inode;
4451
4452 err = f2fs_register_sysfs(sbi);
4453 if (err)
4454 goto free_compress_inode;
4455
4456#ifdef CONFIG_QUOTA
4457 /* Enable quota usage during mount */
4458 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
4459 err = f2fs_enable_quotas(sb);
4460 if (err)
4461 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
4462 }
4463
4464 quota_enabled = f2fs_recover_quota_begin(sbi);
4465#endif
4466 /* if there are any orphan inodes, free them */
4467 err = f2fs_recover_orphan_inodes(sbi);
4468 if (err)
4469 goto free_meta;
4470
4471 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
4472 goto reset_checkpoint;
4473
4474 /* recover fsynced data */
4475 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
4476 !test_opt(sbi, NORECOVERY)) {
4477 /*
4478 * mount should be failed, when device has readonly mode, and
4479 * previous checkpoint was not done by clean system shutdown.
4480 */
4481 if (f2fs_hw_is_readonly(sbi)) {
4482 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4483 err = f2fs_recover_fsync_data(sbi, true);
4484 if (err > 0) {
4485 err = -EROFS;
4486 f2fs_err(sbi, "Need to recover fsync data, but "
4487 "write access unavailable, please try "
4488 "mount w/ disable_roll_forward or norecovery");
4489 }
4490 if (err < 0)
4491 goto free_meta;
4492 }
4493 f2fs_info(sbi, "write access unavailable, skipping recovery");
4494 goto reset_checkpoint;
4495 }
4496
4497 if (need_fsck)
4498 set_sbi_flag(sbi, SBI_NEED_FSCK);
4499
4500 if (skip_recovery)
4501 goto reset_checkpoint;
4502
4503 err = f2fs_recover_fsync_data(sbi, false);
4504 if (err < 0) {
4505 if (err != -ENOMEM)
4506 skip_recovery = true;
4507 need_fsck = true;
4508 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
4509 err);
4510 goto free_meta;
4511 }
4512 } else {
4513 err = f2fs_recover_fsync_data(sbi, true);
4514
4515 if (!f2fs_readonly(sb) && err > 0) {
4516 err = -EINVAL;
4517 f2fs_err(sbi, "Need to recover fsync data");
4518 goto free_meta;
4519 }
4520 }
4521
4522#ifdef CONFIG_QUOTA
4523 f2fs_recover_quota_end(sbi, quota_enabled);
4524#endif
4525
4526 /*
4527 * If the f2fs is not readonly and fsync data recovery succeeds,
4528 * check zoned block devices' write pointer consistency.
4529 */
4530 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
4531 err = f2fs_check_write_pointer(sbi);
4532 if (err)
4533 goto free_meta;
4534 }
4535
4536reset_checkpoint:
4537 f2fs_init_inmem_curseg(sbi);
4538
4539 /* f2fs_recover_fsync_data() cleared this already */
4540 clear_sbi_flag(sbi, SBI_POR_DOING);
4541
4542 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
4543 err = f2fs_disable_checkpoint(sbi);
4544 if (err)
4545 goto sync_free_meta;
4546 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
4547 f2fs_enable_checkpoint(sbi);
4548 }
4549
4550 /*
4551 * If filesystem is not mounted as read-only then
4552 * do start the gc_thread.
4553 */
4554 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF ||
4555 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) {
4556 /* After POR, we can run background GC thread.*/
4557 err = f2fs_start_gc_thread(sbi);
4558 if (err)
4559 goto sync_free_meta;
4560 }
4561 kvfree(options);
4562
4563 /* recover broken superblock */
4564 if (recovery) {
4565 err = f2fs_commit_super(sbi, true);
4566 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
4567 sbi->valid_super_block ? 1 : 2, err);
4568 }
4569
4570 f2fs_join_shrinker(sbi);
4571
4572 f2fs_tuning_parameters(sbi);
4573
4574 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
4575 cur_cp_version(F2FS_CKPT(sbi)));
4576 f2fs_update_time(sbi, CP_TIME);
4577 f2fs_update_time(sbi, REQ_TIME);
4578 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4579 return 0;
4580
4581sync_free_meta:
4582 /* safe to flush all the data */
4583 sync_filesystem(sbi->sb);
4584 retry_cnt = 0;
4585
4586free_meta:
4587#ifdef CONFIG_QUOTA
4588 f2fs_truncate_quota_inode_pages(sb);
4589 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
4590 f2fs_quota_off_umount(sbi->sb);
4591#endif
4592 /*
4593 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4594 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4595 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
4596 * falls into an infinite loop in f2fs_sync_meta_pages().
4597 */
4598 truncate_inode_pages_final(META_MAPPING(sbi));
4599 /* evict some inodes being cached by GC */
4600 evict_inodes(sb);
4601 f2fs_unregister_sysfs(sbi);
4602free_compress_inode:
4603 f2fs_destroy_compress_inode(sbi);
4604free_root_inode:
4605 dput(sb->s_root);
4606 sb->s_root = NULL;
4607free_node_inode:
4608 f2fs_release_ino_entry(sbi, true);
4609 truncate_inode_pages_final(NODE_MAPPING(sbi));
4610 iput(sbi->node_inode);
4611 sbi->node_inode = NULL;
4612free_stats:
4613 f2fs_destroy_stats(sbi);
4614free_nm:
4615 /* stop discard thread before destroying node manager */
4616 f2fs_stop_discard_thread(sbi);
4617 f2fs_destroy_node_manager(sbi);
4618free_sm:
4619 f2fs_destroy_segment_manager(sbi);
4620stop_ckpt_thread:
4621 f2fs_stop_ckpt_thread(sbi);
4622 f2fs_destroy_post_read_wq(sbi);
4623free_devices:
4624 destroy_device_list(sbi);
4625 kvfree(sbi->ckpt);
4626free_meta_inode:
4627 make_bad_inode(sbi->meta_inode);
4628 iput(sbi->meta_inode);
4629 sbi->meta_inode = NULL;
4630free_page_array_cache:
4631 f2fs_destroy_page_array_cache(sbi);
4632free_xattr_cache:
4633 f2fs_destroy_xattr_caches(sbi);
4634free_io_dummy:
4635 mempool_destroy(sbi->write_io_dummy);
4636free_percpu:
4637 destroy_percpu_info(sbi);
4638free_iostat:
4639 f2fs_destroy_iostat(sbi);
4640free_bio_info:
4641 for (i = 0; i < NR_PAGE_TYPE; i++)
4642 kvfree(sbi->write_io[i]);
4643
4644#if IS_ENABLED(CONFIG_UNICODE)
4645 utf8_unload(sb->s_encoding);
4646 sb->s_encoding = NULL;
4647#endif
4648free_options:
4649#ifdef CONFIG_QUOTA
4650 for (i = 0; i < MAXQUOTAS; i++)
4651 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4652#endif
4653 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
4654 kvfree(options);
4655free_sb_buf:
4656 kfree(raw_super);
4657free_sbi:
4658 if (sbi->s_chksum_driver)
4659 crypto_free_shash(sbi->s_chksum_driver);
4660 kfree(sbi);
4661
4662 /* give only one another chance */
4663 if (retry_cnt > 0 && skip_recovery) {
4664 retry_cnt--;
4665 shrink_dcache_sb(sb);
4666 goto try_onemore;
4667 }
4668 return err;
4669}
4670
4671static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
4672 const char *dev_name, void *data)
4673{
4674 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
4675}
4676
4677static void kill_f2fs_super(struct super_block *sb)
4678{
4679 if (sb->s_root) {
4680 struct f2fs_sb_info *sbi = F2FS_SB(sb);
4681
4682 set_sbi_flag(sbi, SBI_IS_CLOSE);
4683 f2fs_stop_gc_thread(sbi);
4684 f2fs_stop_discard_thread(sbi);
4685
4686#ifdef CONFIG_F2FS_FS_COMPRESSION
4687 /*
4688 * latter evict_inode() can bypass checking and invalidating
4689 * compress inode cache.
4690 */
4691 if (test_opt(sbi, COMPRESS_CACHE))
4692 truncate_inode_pages_final(COMPRESS_MAPPING(sbi));
4693#endif
4694
4695 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
4696 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4697 struct cp_control cpc = {
4698 .reason = CP_UMOUNT,
4699 };
4700 f2fs_write_checkpoint(sbi, &cpc);
4701 }
4702
4703 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
4704 sb->s_flags &= ~SB_RDONLY;
4705 }
4706 kill_block_super(sb);
4707}
4708
4709static struct file_system_type f2fs_fs_type = {
4710 .owner = THIS_MODULE,
4711 .name = "f2fs",
4712 .mount = f2fs_mount,
4713 .kill_sb = kill_f2fs_super,
4714 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP,
4715};
4716MODULE_ALIAS_FS("f2fs");
4717
4718static int __init init_inodecache(void)
4719{
4720 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
4721 sizeof(struct f2fs_inode_info), 0,
4722 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
4723 return f2fs_inode_cachep ? 0 : -ENOMEM;
4724}
4725
4726static void destroy_inodecache(void)
4727{
4728 /*
4729 * Make sure all delayed rcu free inodes are flushed before we
4730 * destroy cache.
4731 */
4732 rcu_barrier();
4733 kmem_cache_destroy(f2fs_inode_cachep);
4734}
4735
4736static int __init init_f2fs_fs(void)
4737{
4738 int err;
4739
4740 if (PAGE_SIZE != F2FS_BLKSIZE) {
4741 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
4742 PAGE_SIZE, F2FS_BLKSIZE);
4743 return -EINVAL;
4744 }
4745
4746 err = init_inodecache();
4747 if (err)
4748 goto fail;
4749 err = f2fs_create_node_manager_caches();
4750 if (err)
4751 goto free_inodecache;
4752 err = f2fs_create_segment_manager_caches();
4753 if (err)
4754 goto free_node_manager_caches;
4755 err = f2fs_create_checkpoint_caches();
4756 if (err)
4757 goto free_segment_manager_caches;
4758 err = f2fs_create_recovery_cache();
4759 if (err)
4760 goto free_checkpoint_caches;
4761 err = f2fs_create_extent_cache();
4762 if (err)
4763 goto free_recovery_cache;
4764 err = f2fs_create_garbage_collection_cache();
4765 if (err)
4766 goto free_extent_cache;
4767 err = f2fs_init_sysfs();
4768 if (err)
4769 goto free_garbage_collection_cache;
4770 err = register_shrinker(&f2fs_shrinker_info, "f2fs-shrinker");
4771 if (err)
4772 goto free_sysfs;
4773 err = register_filesystem(&f2fs_fs_type);
4774 if (err)
4775 goto free_shrinker;
4776 f2fs_create_root_stats();
4777 err = f2fs_init_post_read_processing();
4778 if (err)
4779 goto free_root_stats;
4780 err = f2fs_init_iostat_processing();
4781 if (err)
4782 goto free_post_read;
4783 err = f2fs_init_bio_entry_cache();
4784 if (err)
4785 goto free_iostat;
4786 err = f2fs_init_bioset();
4787 if (err)
4788 goto free_bio_entry_cache;
4789 err = f2fs_init_compress_mempool();
4790 if (err)
4791 goto free_bioset;
4792 err = f2fs_init_compress_cache();
4793 if (err)
4794 goto free_compress_mempool;
4795 err = f2fs_create_casefold_cache();
4796 if (err)
4797 goto free_compress_cache;
4798 return 0;
4799free_compress_cache:
4800 f2fs_destroy_compress_cache();
4801free_compress_mempool:
4802 f2fs_destroy_compress_mempool();
4803free_bioset:
4804 f2fs_destroy_bioset();
4805free_bio_entry_cache:
4806 f2fs_destroy_bio_entry_cache();
4807free_iostat:
4808 f2fs_destroy_iostat_processing();
4809free_post_read:
4810 f2fs_destroy_post_read_processing();
4811free_root_stats:
4812 f2fs_destroy_root_stats();
4813 unregister_filesystem(&f2fs_fs_type);
4814free_shrinker:
4815 unregister_shrinker(&f2fs_shrinker_info);
4816free_sysfs:
4817 f2fs_exit_sysfs();
4818free_garbage_collection_cache:
4819 f2fs_destroy_garbage_collection_cache();
4820free_extent_cache:
4821 f2fs_destroy_extent_cache();
4822free_recovery_cache:
4823 f2fs_destroy_recovery_cache();
4824free_checkpoint_caches:
4825 f2fs_destroy_checkpoint_caches();
4826free_segment_manager_caches:
4827 f2fs_destroy_segment_manager_caches();
4828free_node_manager_caches:
4829 f2fs_destroy_node_manager_caches();
4830free_inodecache:
4831 destroy_inodecache();
4832fail:
4833 return err;
4834}
4835
4836static void __exit exit_f2fs_fs(void)
4837{
4838 f2fs_destroy_casefold_cache();
4839 f2fs_destroy_compress_cache();
4840 f2fs_destroy_compress_mempool();
4841 f2fs_destroy_bioset();
4842 f2fs_destroy_bio_entry_cache();
4843 f2fs_destroy_iostat_processing();
4844 f2fs_destroy_post_read_processing();
4845 f2fs_destroy_root_stats();
4846 unregister_filesystem(&f2fs_fs_type);
4847 unregister_shrinker(&f2fs_shrinker_info);
4848 f2fs_exit_sysfs();
4849 f2fs_destroy_garbage_collection_cache();
4850 f2fs_destroy_extent_cache();
4851 f2fs_destroy_recovery_cache();
4852 f2fs_destroy_checkpoint_caches();
4853 f2fs_destroy_segment_manager_caches();
4854 f2fs_destroy_node_manager_caches();
4855 destroy_inodecache();
4856}
4857
4858module_init(init_f2fs_fs)
4859module_exit(exit_f2fs_fs)
4860
4861MODULE_AUTHOR("Samsung Electronics's Praesto Team");
4862MODULE_DESCRIPTION("Flash Friendly File System");
4863MODULE_LICENSE("GPL");
4864MODULE_SOFTDEP("pre: crc32");
4865
Linux 6.x block layer and io_uring tree(s)