1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
8 #include <linux/module.h>
9 #include <linux/init.h>
11 #include <linux/statfs.h>
12 #include <linux/buffer_head.h>
13 #include <linux/backing-dev.h>
14 #include <linux/kthread.h>
15 #include <linux/parser.h>
16 #include <linux/mount.h>
17 #include <linux/seq_file.h>
18 #include <linux/proc_fs.h>
19 #include <linux/random.h>
20 #include <linux/exportfs.h>
21 #include <linux/blkdev.h>
22 #include <linux/quotaops.h>
23 #include <linux/f2fs_fs.h>
24 #include <linux/sysfs.h>
25 #include <linux/quota.h>
26 #include <linux/unicode.h>
27 #include <linux/part_stat.h>
28 #include <linux/zstd.h>
29 #include <linux/lz4.h>
37 #define CREATE_TRACE_POINTS
38 #include <trace/events/f2fs.h>
40 static struct kmem_cache *f2fs_inode_cachep;
42 #ifdef CONFIG_F2FS_FAULT_INJECTION
44 const char *f2fs_fault_name[FAULT_MAX] = {
45 [FAULT_KMALLOC] = "kmalloc",
46 [FAULT_KVMALLOC] = "kvmalloc",
47 [FAULT_PAGE_ALLOC] = "page alloc",
48 [FAULT_PAGE_GET] = "page get",
49 [FAULT_ALLOC_NID] = "alloc nid",
50 [FAULT_ORPHAN] = "orphan",
51 [FAULT_BLOCK] = "no more block",
52 [FAULT_DIR_DEPTH] = "too big dir depth",
53 [FAULT_EVICT_INODE] = "evict_inode fail",
54 [FAULT_TRUNCATE] = "truncate fail",
55 [FAULT_READ_IO] = "read IO error",
56 [FAULT_CHECKPOINT] = "checkpoint error",
57 [FAULT_DISCARD] = "discard error",
58 [FAULT_WRITE_IO] = "write IO error",
61 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
64 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
67 atomic_set(&ffi->inject_ops, 0);
68 ffi->inject_rate = rate;
72 ffi->inject_type = type;
75 memset(ffi, 0, sizeof(struct f2fs_fault_info));
79 /* f2fs-wide shrinker description */
80 static struct shrinker f2fs_shrinker_info = {
81 .scan_objects = f2fs_shrink_scan,
82 .count_objects = f2fs_shrink_count,
83 .seeks = DEFAULT_SEEKS,
88 Opt_disable_roll_forward,
99 Opt_disable_ext_identify,
102 Opt_inline_xattr_size,
140 Opt_test_dummy_encryption,
142 Opt_checkpoint_disable,
143 Opt_checkpoint_disable_cap,
144 Opt_checkpoint_disable_cap_perc,
145 Opt_checkpoint_enable,
146 Opt_checkpoint_merge,
147 Opt_nocheckpoint_merge,
148 Opt_compress_algorithm,
149 Opt_compress_log_size,
150 Opt_compress_extension,
151 Opt_nocompress_extension,
161 static match_table_t f2fs_tokens = {
162 {Opt_gc_background, "background_gc=%s"},
163 {Opt_disable_roll_forward, "disable_roll_forward"},
164 {Opt_norecovery, "norecovery"},
165 {Opt_discard, "discard"},
166 {Opt_nodiscard, "nodiscard"},
167 {Opt_noheap, "no_heap"},
169 {Opt_user_xattr, "user_xattr"},
170 {Opt_nouser_xattr, "nouser_xattr"},
172 {Opt_noacl, "noacl"},
173 {Opt_active_logs, "active_logs=%u"},
174 {Opt_disable_ext_identify, "disable_ext_identify"},
175 {Opt_inline_xattr, "inline_xattr"},
176 {Opt_noinline_xattr, "noinline_xattr"},
177 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
178 {Opt_inline_data, "inline_data"},
179 {Opt_inline_dentry, "inline_dentry"},
180 {Opt_noinline_dentry, "noinline_dentry"},
181 {Opt_flush_merge, "flush_merge"},
182 {Opt_noflush_merge, "noflush_merge"},
183 {Opt_nobarrier, "nobarrier"},
184 {Opt_fastboot, "fastboot"},
185 {Opt_extent_cache, "extent_cache"},
186 {Opt_noextent_cache, "noextent_cache"},
187 {Opt_noinline_data, "noinline_data"},
188 {Opt_data_flush, "data_flush"},
189 {Opt_reserve_root, "reserve_root=%u"},
190 {Opt_resgid, "resgid=%u"},
191 {Opt_resuid, "resuid=%u"},
192 {Opt_mode, "mode=%s"},
193 {Opt_io_size_bits, "io_bits=%u"},
194 {Opt_fault_injection, "fault_injection=%u"},
195 {Opt_fault_type, "fault_type=%u"},
196 {Opt_lazytime, "lazytime"},
197 {Opt_nolazytime, "nolazytime"},
198 {Opt_quota, "quota"},
199 {Opt_noquota, "noquota"},
200 {Opt_usrquota, "usrquota"},
201 {Opt_grpquota, "grpquota"},
202 {Opt_prjquota, "prjquota"},
203 {Opt_usrjquota, "usrjquota=%s"},
204 {Opt_grpjquota, "grpjquota=%s"},
205 {Opt_prjjquota, "prjjquota=%s"},
206 {Opt_offusrjquota, "usrjquota="},
207 {Opt_offgrpjquota, "grpjquota="},
208 {Opt_offprjjquota, "prjjquota="},
209 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
210 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
211 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
212 {Opt_whint, "whint_mode=%s"},
213 {Opt_alloc, "alloc_mode=%s"},
214 {Opt_fsync, "fsync_mode=%s"},
215 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
216 {Opt_test_dummy_encryption, "test_dummy_encryption"},
217 {Opt_inlinecrypt, "inlinecrypt"},
218 {Opt_checkpoint_disable, "checkpoint=disable"},
219 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
220 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
221 {Opt_checkpoint_enable, "checkpoint=enable"},
222 {Opt_checkpoint_merge, "checkpoint_merge"},
223 {Opt_nocheckpoint_merge, "nocheckpoint_merge"},
224 {Opt_compress_algorithm, "compress_algorithm=%s"},
225 {Opt_compress_log_size, "compress_log_size=%u"},
226 {Opt_compress_extension, "compress_extension=%s"},
227 {Opt_nocompress_extension, "nocompress_extension=%s"},
228 {Opt_compress_chksum, "compress_chksum"},
229 {Opt_compress_mode, "compress_mode=%s"},
230 {Opt_compress_cache, "compress_cache"},
232 {Opt_gc_merge, "gc_merge"},
233 {Opt_nogc_merge, "nogc_merge"},
237 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
239 struct va_format vaf;
245 level = printk_get_level(fmt);
246 vaf.fmt = printk_skip_level(fmt);
248 printk("%c%cF2FS-fs (%s): %pV\n",
249 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
254 #ifdef CONFIG_UNICODE
255 static const struct f2fs_sb_encodings {
259 } f2fs_sb_encoding_map[] = {
260 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
263 static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
264 const struct f2fs_sb_encodings **encoding,
267 __u16 magic = le16_to_cpu(sb->s_encoding);
270 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
271 if (magic == f2fs_sb_encoding_map[i].magic)
274 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
277 *encoding = &f2fs_sb_encoding_map[i];
278 *flags = le16_to_cpu(sb->s_encoding_flags);
283 struct kmem_cache *f2fs_cf_name_slab;
284 static int __init f2fs_create_casefold_cache(void)
286 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name",
288 if (!f2fs_cf_name_slab)
293 static void f2fs_destroy_casefold_cache(void)
295 kmem_cache_destroy(f2fs_cf_name_slab);
298 static int __init f2fs_create_casefold_cache(void) { return 0; }
299 static void f2fs_destroy_casefold_cache(void) { }
302 static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
304 block_t limit = min((sbi->user_block_count << 1) / 1000,
305 sbi->user_block_count - sbi->reserved_blocks);
308 if (test_opt(sbi, RESERVE_ROOT) &&
309 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
310 F2FS_OPTION(sbi).root_reserved_blocks = limit;
311 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
312 F2FS_OPTION(sbi).root_reserved_blocks);
314 if (!test_opt(sbi, RESERVE_ROOT) &&
315 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
316 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
317 !gid_eq(F2FS_OPTION(sbi).s_resgid,
318 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
319 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
320 from_kuid_munged(&init_user_ns,
321 F2FS_OPTION(sbi).s_resuid),
322 from_kgid_munged(&init_user_ns,
323 F2FS_OPTION(sbi).s_resgid));
326 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
328 if (!F2FS_OPTION(sbi).unusable_cap_perc)
331 if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
332 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
334 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
335 F2FS_OPTION(sbi).unusable_cap_perc;
337 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
338 F2FS_OPTION(sbi).unusable_cap,
339 F2FS_OPTION(sbi).unusable_cap_perc);
342 static void init_once(void *foo)
344 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
346 inode_init_once(&fi->vfs_inode);
350 static const char * const quotatypes[] = INITQFNAMES;
351 #define QTYPE2NAME(t) (quotatypes[t])
352 static int f2fs_set_qf_name(struct super_block *sb, int qtype,
355 struct f2fs_sb_info *sbi = F2FS_SB(sb);
359 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
360 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
363 if (f2fs_sb_has_quota_ino(sbi)) {
364 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
368 qname = match_strdup(args);
370 f2fs_err(sbi, "Not enough memory for storing quotafile name");
373 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
374 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
377 f2fs_err(sbi, "%s quota file already specified",
381 if (strchr(qname, '/')) {
382 f2fs_err(sbi, "quotafile must be on filesystem root");
385 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
393 static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
395 struct f2fs_sb_info *sbi = F2FS_SB(sb);
397 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
398 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
401 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
402 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
406 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
409 * We do the test below only for project quotas. 'usrquota' and
410 * 'grpquota' mount options are allowed even without quota feature
411 * to support legacy quotas in quota files.
413 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
414 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
417 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
418 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
419 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
420 if (test_opt(sbi, USRQUOTA) &&
421 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
422 clear_opt(sbi, USRQUOTA);
424 if (test_opt(sbi, GRPQUOTA) &&
425 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
426 clear_opt(sbi, GRPQUOTA);
428 if (test_opt(sbi, PRJQUOTA) &&
429 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
430 clear_opt(sbi, PRJQUOTA);
432 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
433 test_opt(sbi, PRJQUOTA)) {
434 f2fs_err(sbi, "old and new quota format mixing");
438 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
439 f2fs_err(sbi, "journaled quota format not specified");
444 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
445 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
446 F2FS_OPTION(sbi).s_jquota_fmt = 0;
452 static int f2fs_set_test_dummy_encryption(struct super_block *sb,
454 const substring_t *arg,
457 struct f2fs_sb_info *sbi = F2FS_SB(sb);
458 #ifdef CONFIG_FS_ENCRYPTION
461 if (!f2fs_sb_has_encrypt(sbi)) {
462 f2fs_err(sbi, "Encrypt feature is off");
467 * This mount option is just for testing, and it's not worthwhile to
468 * implement the extra complexity (e.g. RCU protection) that would be
469 * needed to allow it to be set or changed during remount. We do allow
470 * it to be specified during remount, but only if there is no change.
472 if (is_remount && !F2FS_OPTION(sbi).dummy_enc_policy.policy) {
473 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
476 err = fscrypt_set_test_dummy_encryption(
477 sb, arg->from, &F2FS_OPTION(sbi).dummy_enc_policy);
481 "Can't change test_dummy_encryption on remount");
482 else if (err == -EINVAL)
483 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
486 f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
490 f2fs_warn(sbi, "Test dummy encryption mode enabled");
492 f2fs_warn(sbi, "Test dummy encryption mount option ignored");
497 #ifdef CONFIG_F2FS_FS_COMPRESSION
499 * 1. The same extension name cannot not appear in both compress and non-compress extension
501 * 2. If the compress extension specifies all files, the types specified by the non-compress
502 * extension will be treated as special cases and will not be compressed.
503 * 3. Don't allow the non-compress extension specifies all files.
505 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi)
507 unsigned char (*ext)[F2FS_EXTENSION_LEN];
508 unsigned char (*noext)[F2FS_EXTENSION_LEN];
509 int ext_cnt, noext_cnt, index = 0, no_index = 0;
511 ext = F2FS_OPTION(sbi).extensions;
512 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
513 noext = F2FS_OPTION(sbi).noextensions;
514 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
519 for (no_index = 0; no_index < noext_cnt; no_index++) {
520 if (!strcasecmp("*", noext[no_index])) {
521 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files");
524 for (index = 0; index < ext_cnt; index++) {
525 if (!strcasecmp(ext[index], noext[no_index])) {
526 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension",
535 #ifdef CONFIG_F2FS_FS_LZ4
536 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
538 #ifdef CONFIG_F2FS_FS_LZ4HC
542 if (strlen(str) == 3) {
543 F2FS_OPTION(sbi).compress_level = 0;
547 #ifdef CONFIG_F2FS_FS_LZ4HC
551 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
554 if (kstrtouint(str + 1, 10, &level))
557 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
558 f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
562 F2FS_OPTION(sbi).compress_level = level;
565 f2fs_info(sbi, "kernel doesn't support lz4hc compression");
571 #ifdef CONFIG_F2FS_FS_ZSTD
572 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
577 if (strlen(str) == len) {
578 F2FS_OPTION(sbi).compress_level = 0;
585 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
588 if (kstrtouint(str + 1, 10, &level))
591 if (!level || level > ZSTD_maxCLevel()) {
592 f2fs_info(sbi, "invalid zstd compress level: %d", level);
596 F2FS_OPTION(sbi).compress_level = level;
602 static int parse_options(struct super_block *sb, char *options, bool is_remount)
604 struct f2fs_sb_info *sbi = F2FS_SB(sb);
605 substring_t args[MAX_OPT_ARGS];
606 #ifdef CONFIG_F2FS_FS_COMPRESSION
607 unsigned char (*ext)[F2FS_EXTENSION_LEN];
608 unsigned char (*noext)[F2FS_EXTENSION_LEN];
609 int ext_cnt, noext_cnt;
620 while ((p = strsep(&options, ",")) != NULL) {
626 * Initialize args struct so we know whether arg was
627 * found; some options take optional arguments.
629 args[0].to = args[0].from = NULL;
630 token = match_token(p, f2fs_tokens, args);
633 case Opt_gc_background:
634 name = match_strdup(&args[0]);
638 if (!strcmp(name, "on")) {
639 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
640 } else if (!strcmp(name, "off")) {
641 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
642 } else if (!strcmp(name, "sync")) {
643 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
650 case Opt_disable_roll_forward:
651 set_opt(sbi, DISABLE_ROLL_FORWARD);
654 /* this option mounts f2fs with ro */
655 set_opt(sbi, NORECOVERY);
656 if (!f2fs_readonly(sb))
660 set_opt(sbi, DISCARD);
663 if (f2fs_sb_has_blkzoned(sbi)) {
664 f2fs_warn(sbi, "discard is required for zoned block devices");
667 clear_opt(sbi, DISCARD);
670 set_opt(sbi, NOHEAP);
673 clear_opt(sbi, NOHEAP);
675 #ifdef CONFIG_F2FS_FS_XATTR
677 set_opt(sbi, XATTR_USER);
679 case Opt_nouser_xattr:
680 clear_opt(sbi, XATTR_USER);
682 case Opt_inline_xattr:
683 set_opt(sbi, INLINE_XATTR);
685 case Opt_noinline_xattr:
686 clear_opt(sbi, INLINE_XATTR);
688 case Opt_inline_xattr_size:
689 if (args->from && match_int(args, &arg))
691 set_opt(sbi, INLINE_XATTR_SIZE);
692 F2FS_OPTION(sbi).inline_xattr_size = arg;
696 f2fs_info(sbi, "user_xattr options not supported");
698 case Opt_nouser_xattr:
699 f2fs_info(sbi, "nouser_xattr options not supported");
701 case Opt_inline_xattr:
702 f2fs_info(sbi, "inline_xattr options not supported");
704 case Opt_noinline_xattr:
705 f2fs_info(sbi, "noinline_xattr options not supported");
708 #ifdef CONFIG_F2FS_FS_POSIX_ACL
710 set_opt(sbi, POSIX_ACL);
713 clear_opt(sbi, POSIX_ACL);
717 f2fs_info(sbi, "acl options not supported");
720 f2fs_info(sbi, "noacl options not supported");
723 case Opt_active_logs:
724 if (args->from && match_int(args, &arg))
726 if (arg != 2 && arg != 4 &&
727 arg != NR_CURSEG_PERSIST_TYPE)
729 F2FS_OPTION(sbi).active_logs = arg;
731 case Opt_disable_ext_identify:
732 set_opt(sbi, DISABLE_EXT_IDENTIFY);
734 case Opt_inline_data:
735 set_opt(sbi, INLINE_DATA);
737 case Opt_inline_dentry:
738 set_opt(sbi, INLINE_DENTRY);
740 case Opt_noinline_dentry:
741 clear_opt(sbi, INLINE_DENTRY);
743 case Opt_flush_merge:
744 set_opt(sbi, FLUSH_MERGE);
746 case Opt_noflush_merge:
747 clear_opt(sbi, FLUSH_MERGE);
750 set_opt(sbi, NOBARRIER);
753 set_opt(sbi, FASTBOOT);
755 case Opt_extent_cache:
756 set_opt(sbi, EXTENT_CACHE);
758 case Opt_noextent_cache:
759 clear_opt(sbi, EXTENT_CACHE);
761 case Opt_noinline_data:
762 clear_opt(sbi, INLINE_DATA);
765 set_opt(sbi, DATA_FLUSH);
767 case Opt_reserve_root:
768 if (args->from && match_int(args, &arg))
770 if (test_opt(sbi, RESERVE_ROOT)) {
771 f2fs_info(sbi, "Preserve previous reserve_root=%u",
772 F2FS_OPTION(sbi).root_reserved_blocks);
774 F2FS_OPTION(sbi).root_reserved_blocks = arg;
775 set_opt(sbi, RESERVE_ROOT);
779 if (args->from && match_int(args, &arg))
781 uid = make_kuid(current_user_ns(), arg);
782 if (!uid_valid(uid)) {
783 f2fs_err(sbi, "Invalid uid value %d", arg);
786 F2FS_OPTION(sbi).s_resuid = uid;
789 if (args->from && match_int(args, &arg))
791 gid = make_kgid(current_user_ns(), arg);
792 if (!gid_valid(gid)) {
793 f2fs_err(sbi, "Invalid gid value %d", arg);
796 F2FS_OPTION(sbi).s_resgid = gid;
799 name = match_strdup(&args[0]);
803 if (!strcmp(name, "adaptive")) {
804 if (f2fs_sb_has_blkzoned(sbi)) {
805 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
809 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
810 } else if (!strcmp(name, "lfs")) {
811 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
818 case Opt_io_size_bits:
819 if (args->from && match_int(args, &arg))
821 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) {
822 f2fs_warn(sbi, "Not support %d, larger than %d",
823 1 << arg, BIO_MAX_VECS);
826 F2FS_OPTION(sbi).write_io_size_bits = arg;
828 #ifdef CONFIG_F2FS_FAULT_INJECTION
829 case Opt_fault_injection:
830 if (args->from && match_int(args, &arg))
832 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
833 set_opt(sbi, FAULT_INJECTION);
837 if (args->from && match_int(args, &arg))
839 f2fs_build_fault_attr(sbi, 0, arg);
840 set_opt(sbi, FAULT_INJECTION);
843 case Opt_fault_injection:
844 f2fs_info(sbi, "fault_injection options not supported");
848 f2fs_info(sbi, "fault_type options not supported");
852 sb->s_flags |= SB_LAZYTIME;
855 sb->s_flags &= ~SB_LAZYTIME;
860 set_opt(sbi, USRQUOTA);
863 set_opt(sbi, GRPQUOTA);
866 set_opt(sbi, PRJQUOTA);
869 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
874 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
879 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
883 case Opt_offusrjquota:
884 ret = f2fs_clear_qf_name(sb, USRQUOTA);
888 case Opt_offgrpjquota:
889 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
893 case Opt_offprjjquota:
894 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
898 case Opt_jqfmt_vfsold:
899 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
901 case Opt_jqfmt_vfsv0:
902 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
904 case Opt_jqfmt_vfsv1:
905 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
908 clear_opt(sbi, QUOTA);
909 clear_opt(sbi, USRQUOTA);
910 clear_opt(sbi, GRPQUOTA);
911 clear_opt(sbi, PRJQUOTA);
921 case Opt_offusrjquota:
922 case Opt_offgrpjquota:
923 case Opt_offprjjquota:
924 case Opt_jqfmt_vfsold:
925 case Opt_jqfmt_vfsv0:
926 case Opt_jqfmt_vfsv1:
928 f2fs_info(sbi, "quota operations not supported");
932 name = match_strdup(&args[0]);
935 if (!strcmp(name, "user-based")) {
936 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
937 } else if (!strcmp(name, "off")) {
938 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
939 } else if (!strcmp(name, "fs-based")) {
940 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
948 name = match_strdup(&args[0]);
952 if (!strcmp(name, "default")) {
953 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
954 } else if (!strcmp(name, "reuse")) {
955 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
963 name = match_strdup(&args[0]);
966 if (!strcmp(name, "posix")) {
967 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
968 } else if (!strcmp(name, "strict")) {
969 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
970 } else if (!strcmp(name, "nobarrier")) {
971 F2FS_OPTION(sbi).fsync_mode =
972 FSYNC_MODE_NOBARRIER;
979 case Opt_test_dummy_encryption:
980 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
985 case Opt_inlinecrypt:
986 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
987 sb->s_flags |= SB_INLINECRYPT;
989 f2fs_info(sbi, "inline encryption not supported");
992 case Opt_checkpoint_disable_cap_perc:
993 if (args->from && match_int(args, &arg))
995 if (arg < 0 || arg > 100)
997 F2FS_OPTION(sbi).unusable_cap_perc = arg;
998 set_opt(sbi, DISABLE_CHECKPOINT);
1000 case Opt_checkpoint_disable_cap:
1001 if (args->from && match_int(args, &arg))
1003 F2FS_OPTION(sbi).unusable_cap = arg;
1004 set_opt(sbi, DISABLE_CHECKPOINT);
1006 case Opt_checkpoint_disable:
1007 set_opt(sbi, DISABLE_CHECKPOINT);
1009 case Opt_checkpoint_enable:
1010 clear_opt(sbi, DISABLE_CHECKPOINT);
1012 case Opt_checkpoint_merge:
1013 set_opt(sbi, MERGE_CHECKPOINT);
1015 case Opt_nocheckpoint_merge:
1016 clear_opt(sbi, MERGE_CHECKPOINT);
1018 #ifdef CONFIG_F2FS_FS_COMPRESSION
1019 case Opt_compress_algorithm:
1020 if (!f2fs_sb_has_compression(sbi)) {
1021 f2fs_info(sbi, "Image doesn't support compression");
1024 name = match_strdup(&args[0]);
1027 if (!strcmp(name, "lzo")) {
1028 #ifdef CONFIG_F2FS_FS_LZO
1029 F2FS_OPTION(sbi).compress_level = 0;
1030 F2FS_OPTION(sbi).compress_algorithm =
1033 f2fs_info(sbi, "kernel doesn't support lzo compression");
1035 } else if (!strncmp(name, "lz4", 3)) {
1036 #ifdef CONFIG_F2FS_FS_LZ4
1037 ret = f2fs_set_lz4hc_level(sbi, name);
1042 F2FS_OPTION(sbi).compress_algorithm =
1045 f2fs_info(sbi, "kernel doesn't support lz4 compression");
1047 } else if (!strncmp(name, "zstd", 4)) {
1048 #ifdef CONFIG_F2FS_FS_ZSTD
1049 ret = f2fs_set_zstd_level(sbi, name);
1054 F2FS_OPTION(sbi).compress_algorithm =
1057 f2fs_info(sbi, "kernel doesn't support zstd compression");
1059 } else if (!strcmp(name, "lzo-rle")) {
1060 #ifdef CONFIG_F2FS_FS_LZORLE
1061 F2FS_OPTION(sbi).compress_level = 0;
1062 F2FS_OPTION(sbi).compress_algorithm =
1065 f2fs_info(sbi, "kernel doesn't support lzorle compression");
1073 case Opt_compress_log_size:
1074 if (!f2fs_sb_has_compression(sbi)) {
1075 f2fs_info(sbi, "Image doesn't support compression");
1078 if (args->from && match_int(args, &arg))
1080 if (arg < MIN_COMPRESS_LOG_SIZE ||
1081 arg > MAX_COMPRESS_LOG_SIZE) {
1083 "Compress cluster log size is out of range");
1086 F2FS_OPTION(sbi).compress_log_size = arg;
1088 case Opt_compress_extension:
1089 if (!f2fs_sb_has_compression(sbi)) {
1090 f2fs_info(sbi, "Image doesn't support compression");
1093 name = match_strdup(&args[0]);
1097 ext = F2FS_OPTION(sbi).extensions;
1098 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
1100 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1101 ext_cnt >= COMPRESS_EXT_NUM) {
1103 "invalid extension length/number");
1108 strcpy(ext[ext_cnt], name);
1109 F2FS_OPTION(sbi).compress_ext_cnt++;
1112 case Opt_nocompress_extension:
1113 if (!f2fs_sb_has_compression(sbi)) {
1114 f2fs_info(sbi, "Image doesn't support compression");
1117 name = match_strdup(&args[0]);
1121 noext = F2FS_OPTION(sbi).noextensions;
1122 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
1124 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1125 noext_cnt >= COMPRESS_EXT_NUM) {
1127 "invalid extension length/number");
1132 strcpy(noext[noext_cnt], name);
1133 F2FS_OPTION(sbi).nocompress_ext_cnt++;
1136 case Opt_compress_chksum:
1137 F2FS_OPTION(sbi).compress_chksum = true;
1139 case Opt_compress_mode:
1140 name = match_strdup(&args[0]);
1143 if (!strcmp(name, "fs")) {
1144 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1145 } else if (!strcmp(name, "user")) {
1146 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER;
1153 case Opt_compress_cache:
1154 set_opt(sbi, COMPRESS_CACHE);
1157 case Opt_compress_algorithm:
1158 case Opt_compress_log_size:
1159 case Opt_compress_extension:
1160 case Opt_nocompress_extension:
1161 case Opt_compress_chksum:
1162 case Opt_compress_mode:
1163 case Opt_compress_cache:
1164 f2fs_info(sbi, "compression options not supported");
1171 set_opt(sbi, GC_MERGE);
1173 case Opt_nogc_merge:
1174 clear_opt(sbi, GC_MERGE);
1177 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
1184 if (f2fs_check_quota_options(sbi))
1187 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
1188 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1191 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
1192 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1196 #ifndef CONFIG_UNICODE
1197 if (f2fs_sb_has_casefold(sbi)) {
1199 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
1204 * The BLKZONED feature indicates that the drive was formatted with
1205 * zone alignment optimization. This is optional for host-aware
1206 * devices, but mandatory for host-managed zoned block devices.
1208 #ifndef CONFIG_BLK_DEV_ZONED
1209 if (f2fs_sb_has_blkzoned(sbi)) {
1210 f2fs_err(sbi, "Zoned block device support is not enabled");
1215 #ifdef CONFIG_F2FS_FS_COMPRESSION
1216 if (f2fs_test_compress_extension(sbi)) {
1217 f2fs_err(sbi, "invalid compress or nocompress extension");
1222 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
1223 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
1224 F2FS_IO_SIZE_KB(sbi));
1228 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
1229 int min_size, max_size;
1231 if (!f2fs_sb_has_extra_attr(sbi) ||
1232 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
1233 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
1236 if (!test_opt(sbi, INLINE_XATTR)) {
1237 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
1241 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
1242 max_size = MAX_INLINE_XATTR_SIZE;
1244 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
1245 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
1246 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
1247 min_size, max_size);
1252 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
1253 f2fs_err(sbi, "LFS not compatible with checkpoint=disable");
1257 /* Not pass down write hints if the number of active logs is lesser
1258 * than NR_CURSEG_PERSIST_TYPE.
1260 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
1261 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1263 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
1264 f2fs_err(sbi, "Allow to mount readonly mode only");
1270 static struct inode *f2fs_alloc_inode(struct super_block *sb)
1272 struct f2fs_inode_info *fi;
1274 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
1278 init_once((void *) fi);
1280 /* Initialize f2fs-specific inode info */
1281 atomic_set(&fi->dirty_pages, 0);
1282 atomic_set(&fi->i_compr_blocks, 0);
1283 init_rwsem(&fi->i_sem);
1284 spin_lock_init(&fi->i_size_lock);
1285 INIT_LIST_HEAD(&fi->dirty_list);
1286 INIT_LIST_HEAD(&fi->gdirty_list);
1287 INIT_LIST_HEAD(&fi->inmem_ilist);
1288 INIT_LIST_HEAD(&fi->inmem_pages);
1289 mutex_init(&fi->inmem_lock);
1290 init_rwsem(&fi->i_gc_rwsem[READ]);
1291 init_rwsem(&fi->i_gc_rwsem[WRITE]);
1292 init_rwsem(&fi->i_xattr_sem);
1294 /* Will be used by directory only */
1295 fi->i_dir_level = F2FS_SB(sb)->dir_level;
1297 return &fi->vfs_inode;
1300 static int f2fs_drop_inode(struct inode *inode)
1302 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1306 * during filesystem shutdown, if checkpoint is disabled,
1307 * drop useless meta/node dirty pages.
1309 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1310 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1311 inode->i_ino == F2FS_META_INO(sbi)) {
1312 trace_f2fs_drop_inode(inode, 1);
1318 * This is to avoid a deadlock condition like below.
1319 * writeback_single_inode(inode)
1320 * - f2fs_write_data_page
1321 * - f2fs_gc -> iput -> evict
1322 * - inode_wait_for_writeback(inode)
1324 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
1325 if (!inode->i_nlink && !is_bad_inode(inode)) {
1326 /* to avoid evict_inode call simultaneously */
1327 atomic_inc(&inode->i_count);
1328 spin_unlock(&inode->i_lock);
1330 /* some remained atomic pages should discarded */
1331 if (f2fs_is_atomic_file(inode))
1332 f2fs_drop_inmem_pages(inode);
1334 /* should remain fi->extent_tree for writepage */
1335 f2fs_destroy_extent_node(inode);
1337 sb_start_intwrite(inode->i_sb);
1338 f2fs_i_size_write(inode, 0);
1340 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1341 inode, NULL, 0, DATA);
1342 truncate_inode_pages_final(inode->i_mapping);
1344 if (F2FS_HAS_BLOCKS(inode))
1345 f2fs_truncate(inode);
1347 sb_end_intwrite(inode->i_sb);
1349 spin_lock(&inode->i_lock);
1350 atomic_dec(&inode->i_count);
1352 trace_f2fs_drop_inode(inode, 0);
1355 ret = generic_drop_inode(inode);
1357 ret = fscrypt_drop_inode(inode);
1358 trace_f2fs_drop_inode(inode, ret);
1362 int f2fs_inode_dirtied(struct inode *inode, bool sync)
1364 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1367 spin_lock(&sbi->inode_lock[DIRTY_META]);
1368 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1371 set_inode_flag(inode, FI_DIRTY_INODE);
1372 stat_inc_dirty_inode(sbi, DIRTY_META);
1374 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1375 list_add_tail(&F2FS_I(inode)->gdirty_list,
1376 &sbi->inode_list[DIRTY_META]);
1377 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1379 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1383 void f2fs_inode_synced(struct inode *inode)
1385 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1387 spin_lock(&sbi->inode_lock[DIRTY_META]);
1388 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1389 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1392 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1393 list_del_init(&F2FS_I(inode)->gdirty_list);
1394 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1396 clear_inode_flag(inode, FI_DIRTY_INODE);
1397 clear_inode_flag(inode, FI_AUTO_RECOVER);
1398 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
1399 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1403 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1405 * We should call set_dirty_inode to write the dirty inode through write_inode.
1407 static void f2fs_dirty_inode(struct inode *inode, int flags)
1409 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1411 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1412 inode->i_ino == F2FS_META_INO(sbi))
1415 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1416 clear_inode_flag(inode, FI_AUTO_RECOVER);
1418 f2fs_inode_dirtied(inode, false);
1421 static void f2fs_free_inode(struct inode *inode)
1423 fscrypt_free_inode(inode);
1424 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1427 static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1429 percpu_counter_destroy(&sbi->alloc_valid_block_count);
1430 percpu_counter_destroy(&sbi->total_valid_inode_count);
1433 static void destroy_device_list(struct f2fs_sb_info *sbi)
1437 for (i = 0; i < sbi->s_ndevs; i++) {
1438 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1439 #ifdef CONFIG_BLK_DEV_ZONED
1440 kvfree(FDEV(i).blkz_seq);
1441 kfree(FDEV(i).zone_capacity_blocks);
1447 static void f2fs_put_super(struct super_block *sb)
1449 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1453 /* unregister procfs/sysfs entries in advance to avoid race case */
1454 f2fs_unregister_sysfs(sbi);
1456 f2fs_quota_off_umount(sb);
1458 /* prevent remaining shrinker jobs */
1459 mutex_lock(&sbi->umount_mutex);
1462 * flush all issued checkpoints and stop checkpoint issue thread.
1463 * after then, all checkpoints should be done by each process context.
1465 f2fs_stop_ckpt_thread(sbi);
1468 * We don't need to do checkpoint when superblock is clean.
1469 * But, the previous checkpoint was not done by umount, it needs to do
1470 * clean checkpoint again.
1472 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1473 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
1474 struct cp_control cpc = {
1475 .reason = CP_UMOUNT,
1477 f2fs_write_checkpoint(sbi, &cpc);
1480 /* be sure to wait for any on-going discard commands */
1481 dropped = f2fs_issue_discard_timeout(sbi);
1483 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1484 !sbi->discard_blks && !dropped) {
1485 struct cp_control cpc = {
1486 .reason = CP_UMOUNT | CP_TRIMMED,
1488 f2fs_write_checkpoint(sbi, &cpc);
1492 * normally superblock is clean, so we need to release this.
1493 * In addition, EIO will skip do checkpoint, we need this as well.
1495 f2fs_release_ino_entry(sbi, true);
1497 f2fs_leave_shrinker(sbi);
1498 mutex_unlock(&sbi->umount_mutex);
1500 /* our cp_error case, we can wait for any writeback page */
1501 f2fs_flush_merged_writes(sbi);
1503 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1505 f2fs_bug_on(sbi, sbi->fsync_node_num);
1507 f2fs_destroy_compress_inode(sbi);
1509 iput(sbi->node_inode);
1510 sbi->node_inode = NULL;
1512 iput(sbi->meta_inode);
1513 sbi->meta_inode = NULL;
1516 * iput() can update stat information, if f2fs_write_checkpoint()
1517 * above failed with error.
1519 f2fs_destroy_stats(sbi);
1521 /* destroy f2fs internal modules */
1522 f2fs_destroy_node_manager(sbi);
1523 f2fs_destroy_segment_manager(sbi);
1525 f2fs_destroy_post_read_wq(sbi);
1529 sb->s_fs_info = NULL;
1530 if (sbi->s_chksum_driver)
1531 crypto_free_shash(sbi->s_chksum_driver);
1532 kfree(sbi->raw_super);
1534 destroy_device_list(sbi);
1535 f2fs_destroy_page_array_cache(sbi);
1536 f2fs_destroy_xattr_caches(sbi);
1537 mempool_destroy(sbi->write_io_dummy);
1539 for (i = 0; i < MAXQUOTAS; i++)
1540 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
1542 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
1543 destroy_percpu_info(sbi);
1544 for (i = 0; i < NR_PAGE_TYPE; i++)
1545 kvfree(sbi->write_io[i]);
1546 #ifdef CONFIG_UNICODE
1547 utf8_unload(sb->s_encoding);
1552 int f2fs_sync_fs(struct super_block *sb, int sync)
1554 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1557 if (unlikely(f2fs_cp_error(sbi)))
1559 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1562 trace_f2fs_sync_fs(sb, sync);
1564 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1568 err = f2fs_issue_checkpoint(sbi);
1573 static int f2fs_freeze(struct super_block *sb)
1575 if (f2fs_readonly(sb))
1578 /* IO error happened before */
1579 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1582 /* must be clean, since sync_filesystem() was already called */
1583 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1586 /* ensure no checkpoint required */
1587 if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list))
1592 static int f2fs_unfreeze(struct super_block *sb)
1598 static int f2fs_statfs_project(struct super_block *sb,
1599 kprojid_t projid, struct kstatfs *buf)
1602 struct dquot *dquot;
1606 qid = make_kqid_projid(projid);
1607 dquot = dqget(sb, qid);
1609 return PTR_ERR(dquot);
1610 spin_lock(&dquot->dq_dqb_lock);
1612 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1613 dquot->dq_dqb.dqb_bhardlimit);
1615 limit >>= sb->s_blocksize_bits;
1617 if (limit && buf->f_blocks > limit) {
1618 curblock = (dquot->dq_dqb.dqb_curspace +
1619 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
1620 buf->f_blocks = limit;
1621 buf->f_bfree = buf->f_bavail =
1622 (buf->f_blocks > curblock) ?
1623 (buf->f_blocks - curblock) : 0;
1626 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1627 dquot->dq_dqb.dqb_ihardlimit);
1629 if (limit && buf->f_files > limit) {
1630 buf->f_files = limit;
1632 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1633 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1636 spin_unlock(&dquot->dq_dqb_lock);
1642 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1644 struct super_block *sb = dentry->d_sb;
1645 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1646 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1647 block_t total_count, user_block_count, start_count;
1648 u64 avail_node_count;
1650 total_count = le64_to_cpu(sbi->raw_super->block_count);
1651 user_block_count = sbi->user_block_count;
1652 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
1653 buf->f_type = F2FS_SUPER_MAGIC;
1654 buf->f_bsize = sbi->blocksize;
1656 buf->f_blocks = total_count - start_count;
1657 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
1658 sbi->current_reserved_blocks;
1660 spin_lock(&sbi->stat_lock);
1661 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1664 buf->f_bfree -= sbi->unusable_block_count;
1665 spin_unlock(&sbi->stat_lock);
1667 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1668 buf->f_bavail = buf->f_bfree -
1669 F2FS_OPTION(sbi).root_reserved_blocks;
1673 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
1675 if (avail_node_count > user_block_count) {
1676 buf->f_files = user_block_count;
1677 buf->f_ffree = buf->f_bavail;
1679 buf->f_files = avail_node_count;
1680 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1684 buf->f_namelen = F2FS_NAME_LEN;
1685 buf->f_fsid = u64_to_fsid(id);
1688 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1689 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1690 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1696 static inline void f2fs_show_quota_options(struct seq_file *seq,
1697 struct super_block *sb)
1700 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1702 if (F2FS_OPTION(sbi).s_jquota_fmt) {
1705 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
1716 seq_printf(seq, ",jqfmt=%s", fmtname);
1719 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1720 seq_show_option(seq, "usrjquota",
1721 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
1723 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1724 seq_show_option(seq, "grpjquota",
1725 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
1727 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1728 seq_show_option(seq, "prjjquota",
1729 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
1733 #ifdef CONFIG_F2FS_FS_COMPRESSION
1734 static inline void f2fs_show_compress_options(struct seq_file *seq,
1735 struct super_block *sb)
1737 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1741 if (!f2fs_sb_has_compression(sbi))
1744 switch (F2FS_OPTION(sbi).compress_algorithm) {
1754 case COMPRESS_LZORLE:
1755 algtype = "lzo-rle";
1758 seq_printf(seq, ",compress_algorithm=%s", algtype);
1760 if (F2FS_OPTION(sbi).compress_level)
1761 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level);
1763 seq_printf(seq, ",compress_log_size=%u",
1764 F2FS_OPTION(sbi).compress_log_size);
1766 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1767 seq_printf(seq, ",compress_extension=%s",
1768 F2FS_OPTION(sbi).extensions[i]);
1771 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) {
1772 seq_printf(seq, ",nocompress_extension=%s",
1773 F2FS_OPTION(sbi).noextensions[i]);
1776 if (F2FS_OPTION(sbi).compress_chksum)
1777 seq_puts(seq, ",compress_chksum");
1779 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS)
1780 seq_printf(seq, ",compress_mode=%s", "fs");
1781 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER)
1782 seq_printf(seq, ",compress_mode=%s", "user");
1784 if (test_opt(sbi, COMPRESS_CACHE))
1785 seq_puts(seq, ",compress_cache");
1789 static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1791 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1793 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1794 seq_printf(seq, ",background_gc=%s", "sync");
1795 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1796 seq_printf(seq, ",background_gc=%s", "on");
1797 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
1798 seq_printf(seq, ",background_gc=%s", "off");
1800 if (test_opt(sbi, GC_MERGE))
1801 seq_puts(seq, ",gc_merge");
1803 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1804 seq_puts(seq, ",disable_roll_forward");
1805 if (test_opt(sbi, NORECOVERY))
1806 seq_puts(seq, ",norecovery");
1807 if (test_opt(sbi, DISCARD))
1808 seq_puts(seq, ",discard");
1810 seq_puts(seq, ",nodiscard");
1811 if (test_opt(sbi, NOHEAP))
1812 seq_puts(seq, ",no_heap");
1814 seq_puts(seq, ",heap");
1815 #ifdef CONFIG_F2FS_FS_XATTR
1816 if (test_opt(sbi, XATTR_USER))
1817 seq_puts(seq, ",user_xattr");
1819 seq_puts(seq, ",nouser_xattr");
1820 if (test_opt(sbi, INLINE_XATTR))
1821 seq_puts(seq, ",inline_xattr");
1823 seq_puts(seq, ",noinline_xattr");
1824 if (test_opt(sbi, INLINE_XATTR_SIZE))
1825 seq_printf(seq, ",inline_xattr_size=%u",
1826 F2FS_OPTION(sbi).inline_xattr_size);
1828 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1829 if (test_opt(sbi, POSIX_ACL))
1830 seq_puts(seq, ",acl");
1832 seq_puts(seq, ",noacl");
1834 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
1835 seq_puts(seq, ",disable_ext_identify");
1836 if (test_opt(sbi, INLINE_DATA))
1837 seq_puts(seq, ",inline_data");
1839 seq_puts(seq, ",noinline_data");
1840 if (test_opt(sbi, INLINE_DENTRY))
1841 seq_puts(seq, ",inline_dentry");
1843 seq_puts(seq, ",noinline_dentry");
1844 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
1845 seq_puts(seq, ",flush_merge");
1846 if (test_opt(sbi, NOBARRIER))
1847 seq_puts(seq, ",nobarrier");
1848 if (test_opt(sbi, FASTBOOT))
1849 seq_puts(seq, ",fastboot");
1850 if (test_opt(sbi, EXTENT_CACHE))
1851 seq_puts(seq, ",extent_cache");
1853 seq_puts(seq, ",noextent_cache");
1854 if (test_opt(sbi, DATA_FLUSH))
1855 seq_puts(seq, ",data_flush");
1857 seq_puts(seq, ",mode=");
1858 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
1859 seq_puts(seq, "adaptive");
1860 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
1861 seq_puts(seq, "lfs");
1862 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
1863 if (test_opt(sbi, RESERVE_ROOT))
1864 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
1865 F2FS_OPTION(sbi).root_reserved_blocks,
1866 from_kuid_munged(&init_user_ns,
1867 F2FS_OPTION(sbi).s_resuid),
1868 from_kgid_munged(&init_user_ns,
1869 F2FS_OPTION(sbi).s_resgid));
1870 if (F2FS_IO_SIZE_BITS(sbi))
1871 seq_printf(seq, ",io_bits=%u",
1872 F2FS_OPTION(sbi).write_io_size_bits);
1873 #ifdef CONFIG_F2FS_FAULT_INJECTION
1874 if (test_opt(sbi, FAULT_INJECTION)) {
1875 seq_printf(seq, ",fault_injection=%u",
1876 F2FS_OPTION(sbi).fault_info.inject_rate);
1877 seq_printf(seq, ",fault_type=%u",
1878 F2FS_OPTION(sbi).fault_info.inject_type);
1882 if (test_opt(sbi, QUOTA))
1883 seq_puts(seq, ",quota");
1884 if (test_opt(sbi, USRQUOTA))
1885 seq_puts(seq, ",usrquota");
1886 if (test_opt(sbi, GRPQUOTA))
1887 seq_puts(seq, ",grpquota");
1888 if (test_opt(sbi, PRJQUOTA))
1889 seq_puts(seq, ",prjquota");
1891 f2fs_show_quota_options(seq, sbi->sb);
1892 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
1893 seq_printf(seq, ",whint_mode=%s", "user-based");
1894 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
1895 seq_printf(seq, ",whint_mode=%s", "fs-based");
1897 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
1899 if (sbi->sb->s_flags & SB_INLINECRYPT)
1900 seq_puts(seq, ",inlinecrypt");
1902 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
1903 seq_printf(seq, ",alloc_mode=%s", "default");
1904 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
1905 seq_printf(seq, ",alloc_mode=%s", "reuse");
1907 if (test_opt(sbi, DISABLE_CHECKPOINT))
1908 seq_printf(seq, ",checkpoint=disable:%u",
1909 F2FS_OPTION(sbi).unusable_cap);
1910 if (test_opt(sbi, MERGE_CHECKPOINT))
1911 seq_puts(seq, ",checkpoint_merge");
1913 seq_puts(seq, ",nocheckpoint_merge");
1914 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
1915 seq_printf(seq, ",fsync_mode=%s", "posix");
1916 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
1917 seq_printf(seq, ",fsync_mode=%s", "strict");
1918 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1919 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
1921 #ifdef CONFIG_F2FS_FS_COMPRESSION
1922 f2fs_show_compress_options(seq, sbi->sb);
1925 if (test_opt(sbi, ATGC))
1926 seq_puts(seq, ",atgc");
1930 static void default_options(struct f2fs_sb_info *sbi)
1932 /* init some FS parameters */
1933 if (f2fs_sb_has_readonly(sbi))
1934 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE;
1936 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
1938 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1939 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1940 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1941 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
1942 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1943 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
1944 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
1945 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
1946 F2FS_OPTION(sbi).compress_ext_cnt = 0;
1947 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1948 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
1950 sbi->sb->s_flags &= ~SB_INLINECRYPT;
1952 set_opt(sbi, INLINE_XATTR);
1953 set_opt(sbi, INLINE_DATA);
1954 set_opt(sbi, INLINE_DENTRY);
1955 set_opt(sbi, EXTENT_CACHE);
1956 set_opt(sbi, NOHEAP);
1957 clear_opt(sbi, DISABLE_CHECKPOINT);
1958 set_opt(sbi, MERGE_CHECKPOINT);
1959 F2FS_OPTION(sbi).unusable_cap = 0;
1960 sbi->sb->s_flags |= SB_LAZYTIME;
1961 set_opt(sbi, FLUSH_MERGE);
1962 set_opt(sbi, DISCARD);
1963 if (f2fs_sb_has_blkzoned(sbi))
1964 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
1966 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
1968 #ifdef CONFIG_F2FS_FS_XATTR
1969 set_opt(sbi, XATTR_USER);
1971 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1972 set_opt(sbi, POSIX_ACL);
1975 f2fs_build_fault_attr(sbi, 0, 0);
1979 static int f2fs_enable_quotas(struct super_block *sb);
1982 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1984 unsigned int s_flags = sbi->sb->s_flags;
1985 struct cp_control cpc;
1990 if (s_flags & SB_RDONLY) {
1991 f2fs_err(sbi, "checkpoint=disable on readonly fs");
1994 sbi->sb->s_flags |= SB_ACTIVE;
1996 f2fs_update_time(sbi, DISABLE_TIME);
1998 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
1999 down_write(&sbi->gc_lock);
2000 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
2001 if (err == -ENODATA) {
2005 if (err && err != -EAGAIN)
2009 ret = sync_filesystem(sbi->sb);
2011 err = ret ? ret : err;
2015 unusable = f2fs_get_unusable_blocks(sbi);
2016 if (f2fs_disable_cp_again(sbi, unusable)) {
2021 down_write(&sbi->gc_lock);
2022 cpc.reason = CP_PAUSE;
2023 set_sbi_flag(sbi, SBI_CP_DISABLED);
2024 err = f2fs_write_checkpoint(sbi, &cpc);
2028 spin_lock(&sbi->stat_lock);
2029 sbi->unusable_block_count = unusable;
2030 spin_unlock(&sbi->stat_lock);
2033 up_write(&sbi->gc_lock);
2035 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
2039 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
2041 /* we should flush all the data to keep data consistency */
2042 sync_inodes_sb(sbi->sb);
2044 down_write(&sbi->gc_lock);
2045 f2fs_dirty_to_prefree(sbi);
2047 clear_sbi_flag(sbi, SBI_CP_DISABLED);
2048 set_sbi_flag(sbi, SBI_IS_DIRTY);
2049 up_write(&sbi->gc_lock);
2051 f2fs_sync_fs(sbi->sb, 1);
2054 static int f2fs_remount(struct super_block *sb, int *flags, char *data)
2056 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2057 struct f2fs_mount_info org_mount_opt;
2058 unsigned long old_sb_flags;
2060 bool need_restart_gc = false, need_stop_gc = false;
2061 bool need_restart_ckpt = false, need_stop_ckpt = false;
2062 bool need_restart_flush = false, need_stop_flush = false;
2063 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
2064 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
2065 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
2066 bool no_atgc = !test_opt(sbi, ATGC);
2067 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE);
2068 bool checkpoint_changed;
2074 * Save the old mount options in case we
2075 * need to restore them.
2077 org_mount_opt = sbi->mount_opt;
2078 old_sb_flags = sb->s_flags;
2081 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
2082 for (i = 0; i < MAXQUOTAS; i++) {
2083 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2084 org_mount_opt.s_qf_names[i] =
2085 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
2087 if (!org_mount_opt.s_qf_names[i]) {
2088 for (j = 0; j < i; j++)
2089 kfree(org_mount_opt.s_qf_names[j]);
2093 org_mount_opt.s_qf_names[i] = NULL;
2098 /* recover superblocks we couldn't write due to previous RO mount */
2099 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
2100 err = f2fs_commit_super(sbi, false);
2101 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
2104 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2107 default_options(sbi);
2109 /* parse mount options */
2110 err = parse_options(sb, data, true);
2113 checkpoint_changed =
2114 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
2117 * Previous and new state of filesystem is RO,
2118 * so skip checking GC and FLUSH_MERGE conditions.
2120 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
2123 if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) {
2129 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
2130 err = dquot_suspend(sb, -1);
2133 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
2134 /* dquot_resume needs RW */
2135 sb->s_flags &= ~SB_RDONLY;
2136 if (sb_any_quota_suspended(sb)) {
2137 dquot_resume(sb, -1);
2138 } else if (f2fs_sb_has_quota_ino(sbi)) {
2139 err = f2fs_enable_quotas(sb);
2145 /* disallow enable atgc dynamically */
2146 if (no_atgc == !!test_opt(sbi, ATGC)) {
2148 f2fs_warn(sbi, "switch atgc option is not allowed");
2152 /* disallow enable/disable extent_cache dynamically */
2153 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
2155 f2fs_warn(sbi, "switch extent_cache option is not allowed");
2159 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
2161 f2fs_warn(sbi, "switch io_bits option is not allowed");
2165 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) {
2167 f2fs_warn(sbi, "switch compress_cache option is not allowed");
2171 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
2173 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
2178 * We stop the GC thread if FS is mounted as RO
2179 * or if background_gc = off is passed in mount
2180 * option. Also sync the filesystem.
2182 if ((*flags & SB_RDONLY) ||
2183 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF &&
2184 !test_opt(sbi, GC_MERGE))) {
2185 if (sbi->gc_thread) {
2186 f2fs_stop_gc_thread(sbi);
2187 need_restart_gc = true;
2189 } else if (!sbi->gc_thread) {
2190 err = f2fs_start_gc_thread(sbi);
2193 need_stop_gc = true;
2196 if (*flags & SB_RDONLY ||
2197 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
2200 set_sbi_flag(sbi, SBI_IS_DIRTY);
2201 set_sbi_flag(sbi, SBI_IS_CLOSE);
2202 f2fs_sync_fs(sb, 1);
2203 clear_sbi_flag(sbi, SBI_IS_CLOSE);
2206 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
2207 !test_opt(sbi, MERGE_CHECKPOINT)) {
2208 f2fs_stop_ckpt_thread(sbi);
2209 need_restart_ckpt = true;
2211 err = f2fs_start_ckpt_thread(sbi);
2214 "Failed to start F2FS issue_checkpoint_thread (%d)",
2218 need_stop_ckpt = true;
2222 * We stop issue flush thread if FS is mounted as RO
2223 * or if flush_merge is not passed in mount option.
2225 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
2226 clear_opt(sbi, FLUSH_MERGE);
2227 f2fs_destroy_flush_cmd_control(sbi, false);
2228 need_restart_flush = true;
2230 err = f2fs_create_flush_cmd_control(sbi);
2233 need_stop_flush = true;
2236 if (checkpoint_changed) {
2237 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
2238 err = f2fs_disable_checkpoint(sbi);
2242 f2fs_enable_checkpoint(sbi);
2248 /* Release old quota file names */
2249 for (i = 0; i < MAXQUOTAS; i++)
2250 kfree(org_mount_opt.s_qf_names[i]);
2252 /* Update the POSIXACL Flag */
2253 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
2254 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
2256 limit_reserve_root(sbi);
2257 adjust_unusable_cap_perc(sbi);
2258 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
2261 if (need_restart_flush) {
2262 if (f2fs_create_flush_cmd_control(sbi))
2263 f2fs_warn(sbi, "background flush thread has stopped");
2264 } else if (need_stop_flush) {
2265 clear_opt(sbi, FLUSH_MERGE);
2266 f2fs_destroy_flush_cmd_control(sbi, false);
2269 if (need_restart_ckpt) {
2270 if (f2fs_start_ckpt_thread(sbi))
2271 f2fs_warn(sbi, "background ckpt thread has stopped");
2272 } else if (need_stop_ckpt) {
2273 f2fs_stop_ckpt_thread(sbi);
2276 if (need_restart_gc) {
2277 if (f2fs_start_gc_thread(sbi))
2278 f2fs_warn(sbi, "background gc thread has stopped");
2279 } else if (need_stop_gc) {
2280 f2fs_stop_gc_thread(sbi);
2284 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
2285 for (i = 0; i < MAXQUOTAS; i++) {
2286 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
2287 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
2290 sbi->mount_opt = org_mount_opt;
2291 sb->s_flags = old_sb_flags;
2296 /* Read data from quotafile */
2297 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
2298 size_t len, loff_t off)
2300 struct inode *inode = sb_dqopt(sb)->files[type];
2301 struct address_space *mapping = inode->i_mapping;
2302 block_t blkidx = F2FS_BYTES_TO_BLK(off);
2303 int offset = off & (sb->s_blocksize - 1);
2306 loff_t i_size = i_size_read(inode);
2313 if (off + len > i_size)
2316 while (toread > 0) {
2317 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
2319 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
2321 if (PTR_ERR(page) == -ENOMEM) {
2322 congestion_wait(BLK_RW_ASYNC,
2323 DEFAULT_IO_TIMEOUT);
2326 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2327 return PTR_ERR(page);
2332 if (unlikely(page->mapping != mapping)) {
2333 f2fs_put_page(page, 1);
2336 if (unlikely(!PageUptodate(page))) {
2337 f2fs_put_page(page, 1);
2338 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2342 kaddr = kmap_atomic(page);
2343 memcpy(data, kaddr + offset, tocopy);
2344 kunmap_atomic(kaddr);
2345 f2fs_put_page(page, 1);
2355 /* Write to quotafile */
2356 static ssize_t f2fs_quota_write(struct super_block *sb, int type,
2357 const char *data, size_t len, loff_t off)
2359 struct inode *inode = sb_dqopt(sb)->files[type];
2360 struct address_space *mapping = inode->i_mapping;
2361 const struct address_space_operations *a_ops = mapping->a_ops;
2362 int offset = off & (sb->s_blocksize - 1);
2363 size_t towrite = len;
2365 void *fsdata = NULL;
2370 while (towrite > 0) {
2371 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
2374 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
2376 if (unlikely(err)) {
2377 if (err == -ENOMEM) {
2378 congestion_wait(BLK_RW_ASYNC,
2379 DEFAULT_IO_TIMEOUT);
2382 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2386 kaddr = kmap_atomic(page);
2387 memcpy(kaddr + offset, data, tocopy);
2388 kunmap_atomic(kaddr);
2389 flush_dcache_page(page);
2391 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
2402 inode->i_mtime = inode->i_ctime = current_time(inode);
2403 f2fs_mark_inode_dirty_sync(inode, false);
2404 return len - towrite;
2407 static struct dquot **f2fs_get_dquots(struct inode *inode)
2409 return F2FS_I(inode)->i_dquot;
2412 static qsize_t *f2fs_get_reserved_space(struct inode *inode)
2414 return &F2FS_I(inode)->i_reserved_quota;
2417 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
2419 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
2420 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
2424 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
2425 F2FS_OPTION(sbi).s_jquota_fmt, type);
2428 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
2433 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
2434 err = f2fs_enable_quotas(sbi->sb);
2436 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
2442 for (i = 0; i < MAXQUOTAS; i++) {
2443 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2444 err = f2fs_quota_on_mount(sbi, i);
2449 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2456 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2459 struct inode *qf_inode;
2460 unsigned long qf_inum;
2463 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
2465 qf_inum = f2fs_qf_ino(sb, type);
2469 qf_inode = f2fs_iget(sb, qf_inum);
2470 if (IS_ERR(qf_inode)) {
2471 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
2472 return PTR_ERR(qf_inode);
2475 /* Don't account quota for quota files to avoid recursion */
2476 qf_inode->i_flags |= S_NOQUOTA;
2477 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
2482 static int f2fs_enable_quotas(struct super_block *sb)
2484 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2486 unsigned long qf_inum;
2487 bool quota_mopt[MAXQUOTAS] = {
2488 test_opt(sbi, USRQUOTA),
2489 test_opt(sbi, GRPQUOTA),
2490 test_opt(sbi, PRJQUOTA),
2493 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
2494 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
2498 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2500 for (type = 0; type < MAXQUOTAS; type++) {
2501 qf_inum = f2fs_qf_ino(sb, type);
2503 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2504 DQUOT_USAGE_ENABLED |
2505 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2507 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2509 for (type--; type >= 0; type--)
2510 dquot_quota_off(sb, type);
2511 set_sbi_flag(F2FS_SB(sb),
2512 SBI_QUOTA_NEED_REPAIR);
2520 int f2fs_quota_sync(struct super_block *sb, int type)
2522 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2523 struct quota_info *dqopt = sb_dqopt(sb);
2530 * down_read(quota_sem)
2531 * dquot_writeback_dquots()
2534 * down_read(quota_sem)
2538 down_read(&sbi->quota_sem);
2539 ret = dquot_writeback_dquots(sb, type);
2544 * Now when everything is written we can discard the pagecache so
2545 * that userspace sees the changes.
2547 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
2548 struct address_space *mapping;
2550 if (type != -1 && cnt != type)
2552 if (!sb_has_quota_active(sb, cnt))
2555 mapping = dqopt->files[cnt]->i_mapping;
2557 ret = filemap_fdatawrite(mapping);
2561 /* if we are using journalled quota */
2562 if (is_journalled_quota(sbi))
2565 ret = filemap_fdatawait(mapping);
2567 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2569 inode_lock(dqopt->files[cnt]);
2570 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
2571 inode_unlock(dqopt->files[cnt]);
2575 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2576 up_read(&sbi->quota_sem);
2577 f2fs_unlock_op(sbi);
2581 static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2582 const struct path *path)
2584 struct inode *inode;
2587 /* if quota sysfile exists, deny enabling quota with specific file */
2588 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2589 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2593 err = f2fs_quota_sync(sb, type);
2597 err = dquot_quota_on(sb, type, format_id, path);
2601 inode = d_inode(path->dentry);
2604 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
2605 f2fs_set_inode_flags(inode);
2606 inode_unlock(inode);
2607 f2fs_mark_inode_dirty_sync(inode, false);
2612 static int __f2fs_quota_off(struct super_block *sb, int type)
2614 struct inode *inode = sb_dqopt(sb)->files[type];
2617 if (!inode || !igrab(inode))
2618 return dquot_quota_off(sb, type);
2620 err = f2fs_quota_sync(sb, type);
2624 err = dquot_quota_off(sb, type);
2625 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
2629 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
2630 f2fs_set_inode_flags(inode);
2631 inode_unlock(inode);
2632 f2fs_mark_inode_dirty_sync(inode, false);
2638 static int f2fs_quota_off(struct super_block *sb, int type)
2640 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2643 err = __f2fs_quota_off(sb, type);
2646 * quotactl can shutdown journalled quota, result in inconsistence
2647 * between quota record and fs data by following updates, tag the
2648 * flag to let fsck be aware of it.
2650 if (is_journalled_quota(sbi))
2651 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2655 void f2fs_quota_off_umount(struct super_block *sb)
2660 for (type = 0; type < MAXQUOTAS; type++) {
2661 err = __f2fs_quota_off(sb, type);
2663 int ret = dquot_quota_off(sb, type);
2665 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2667 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2671 * In case of checkpoint=disable, we must flush quota blocks.
2672 * This can cause NULL exception for node_inode in end_io, since
2673 * put_super already dropped it.
2675 sync_filesystem(sb);
2678 static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2680 struct quota_info *dqopt = sb_dqopt(sb);
2683 for (type = 0; type < MAXQUOTAS; type++) {
2684 if (!dqopt->files[type])
2686 f2fs_inode_synced(dqopt->files[type]);
2690 static int f2fs_dquot_commit(struct dquot *dquot)
2692 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2695 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
2696 ret = dquot_commit(dquot);
2698 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2699 up_read(&sbi->quota_sem);
2703 static int f2fs_dquot_acquire(struct dquot *dquot)
2705 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2708 down_read(&sbi->quota_sem);
2709 ret = dquot_acquire(dquot);
2711 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2712 up_read(&sbi->quota_sem);
2716 static int f2fs_dquot_release(struct dquot *dquot)
2718 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2719 int ret = dquot_release(dquot);
2722 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2726 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2728 struct super_block *sb = dquot->dq_sb;
2729 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2730 int ret = dquot_mark_dquot_dirty(dquot);
2732 /* if we are using journalled quota */
2733 if (is_journalled_quota(sbi))
2734 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2739 static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2741 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2742 int ret = dquot_commit_info(sb, type);
2745 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2749 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
2751 *projid = F2FS_I(inode)->i_projid;
2755 static const struct dquot_operations f2fs_quota_operations = {
2756 .get_reserved_space = f2fs_get_reserved_space,
2757 .write_dquot = f2fs_dquot_commit,
2758 .acquire_dquot = f2fs_dquot_acquire,
2759 .release_dquot = f2fs_dquot_release,
2760 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2761 .write_info = f2fs_dquot_commit_info,
2762 .alloc_dquot = dquot_alloc,
2763 .destroy_dquot = dquot_destroy,
2764 .get_projid = f2fs_get_projid,
2765 .get_next_id = dquot_get_next_id,
2768 static const struct quotactl_ops f2fs_quotactl_ops = {
2769 .quota_on = f2fs_quota_on,
2770 .quota_off = f2fs_quota_off,
2771 .quota_sync = f2fs_quota_sync,
2772 .get_state = dquot_get_state,
2773 .set_info = dquot_set_dqinfo,
2774 .get_dqblk = dquot_get_dqblk,
2775 .set_dqblk = dquot_set_dqblk,
2776 .get_nextdqblk = dquot_get_next_dqblk,
2779 int f2fs_quota_sync(struct super_block *sb, int type)
2784 void f2fs_quota_off_umount(struct super_block *sb)
2789 static const struct super_operations f2fs_sops = {
2790 .alloc_inode = f2fs_alloc_inode,
2791 .free_inode = f2fs_free_inode,
2792 .drop_inode = f2fs_drop_inode,
2793 .write_inode = f2fs_write_inode,
2794 .dirty_inode = f2fs_dirty_inode,
2795 .show_options = f2fs_show_options,
2797 .quota_read = f2fs_quota_read,
2798 .quota_write = f2fs_quota_write,
2799 .get_dquots = f2fs_get_dquots,
2801 .evict_inode = f2fs_evict_inode,
2802 .put_super = f2fs_put_super,
2803 .sync_fs = f2fs_sync_fs,
2804 .freeze_fs = f2fs_freeze,
2805 .unfreeze_fs = f2fs_unfreeze,
2806 .statfs = f2fs_statfs,
2807 .remount_fs = f2fs_remount,
2810 #ifdef CONFIG_FS_ENCRYPTION
2811 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2813 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2814 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2818 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2821 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2824 * Encrypting the root directory is not allowed because fsck
2825 * expects lost+found directory to exist and remain unencrypted
2826 * if LOST_FOUND feature is enabled.
2829 if (f2fs_sb_has_lost_found(sbi) &&
2830 inode->i_ino == F2FS_ROOT_INO(sbi))
2833 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2834 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2835 ctx, len, fs_data, XATTR_CREATE);
2838 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
2840 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy;
2843 static bool f2fs_has_stable_inodes(struct super_block *sb)
2848 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
2849 int *ino_bits_ret, int *lblk_bits_ret)
2851 *ino_bits_ret = 8 * sizeof(nid_t);
2852 *lblk_bits_ret = 8 * sizeof(block_t);
2855 static int f2fs_get_num_devices(struct super_block *sb)
2857 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2859 if (f2fs_is_multi_device(sbi))
2860 return sbi->s_ndevs;
2864 static void f2fs_get_devices(struct super_block *sb,
2865 struct request_queue **devs)
2867 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2870 for (i = 0; i < sbi->s_ndevs; i++)
2871 devs[i] = bdev_get_queue(FDEV(i).bdev);
2874 static const struct fscrypt_operations f2fs_cryptops = {
2875 .key_prefix = "f2fs:",
2876 .get_context = f2fs_get_context,
2877 .set_context = f2fs_set_context,
2878 .get_dummy_policy = f2fs_get_dummy_policy,
2879 .empty_dir = f2fs_empty_dir,
2880 .max_namelen = F2FS_NAME_LEN,
2881 .has_stable_inodes = f2fs_has_stable_inodes,
2882 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
2883 .get_num_devices = f2fs_get_num_devices,
2884 .get_devices = f2fs_get_devices,
2888 static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2889 u64 ino, u32 generation)
2891 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2892 struct inode *inode;
2894 if (f2fs_check_nid_range(sbi, ino))
2895 return ERR_PTR(-ESTALE);
2898 * f2fs_iget isn't quite right if the inode is currently unallocated!
2899 * However f2fs_iget currently does appropriate checks to handle stale
2900 * inodes so everything is OK.
2902 inode = f2fs_iget(sb, ino);
2904 return ERR_CAST(inode);
2905 if (unlikely(generation && inode->i_generation != generation)) {
2906 /* we didn't find the right inode.. */
2908 return ERR_PTR(-ESTALE);
2913 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2914 int fh_len, int fh_type)
2916 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2917 f2fs_nfs_get_inode);
2920 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2921 int fh_len, int fh_type)
2923 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2924 f2fs_nfs_get_inode);
2927 static const struct export_operations f2fs_export_ops = {
2928 .fh_to_dentry = f2fs_fh_to_dentry,
2929 .fh_to_parent = f2fs_fh_to_parent,
2930 .get_parent = f2fs_get_parent,
2933 loff_t max_file_blocks(struct inode *inode)
2939 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
2940 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
2941 * space in inode.i_addr, it will be more safe to reassign
2945 if (inode && f2fs_compressed_file(inode))
2946 leaf_count = ADDRS_PER_BLOCK(inode);
2948 leaf_count = DEF_ADDRS_PER_BLOCK;
2950 /* two direct node blocks */
2951 result += (leaf_count * 2);
2953 /* two indirect node blocks */
2954 leaf_count *= NIDS_PER_BLOCK;
2955 result += (leaf_count * 2);
2957 /* one double indirect node block */
2958 leaf_count *= NIDS_PER_BLOCK;
2959 result += leaf_count;
2964 static int __f2fs_commit_super(struct buffer_head *bh,
2965 struct f2fs_super_block *super)
2969 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
2970 set_buffer_dirty(bh);
2973 /* it's rare case, we can do fua all the time */
2974 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
2977 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
2978 struct buffer_head *bh)
2980 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2981 (bh->b_data + F2FS_SUPER_OFFSET);
2982 struct super_block *sb = sbi->sb;
2983 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2984 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2985 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2986 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2987 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2988 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2989 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2990 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2991 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2992 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2993 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2994 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2995 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2996 u64 main_end_blkaddr = main_blkaddr +
2997 (segment_count_main << log_blocks_per_seg);
2998 u64 seg_end_blkaddr = segment0_blkaddr +
2999 (segment_count << log_blocks_per_seg);
3001 if (segment0_blkaddr != cp_blkaddr) {
3002 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
3003 segment0_blkaddr, cp_blkaddr);
3007 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
3009 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
3010 cp_blkaddr, sit_blkaddr,
3011 segment_count_ckpt << log_blocks_per_seg);
3015 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
3017 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
3018 sit_blkaddr, nat_blkaddr,
3019 segment_count_sit << log_blocks_per_seg);
3023 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
3025 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
3026 nat_blkaddr, ssa_blkaddr,
3027 segment_count_nat << log_blocks_per_seg);
3031 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
3033 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
3034 ssa_blkaddr, main_blkaddr,
3035 segment_count_ssa << log_blocks_per_seg);
3039 if (main_end_blkaddr > seg_end_blkaddr) {
3040 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)",
3041 main_blkaddr, seg_end_blkaddr,
3042 segment_count_main << log_blocks_per_seg);
3044 } else if (main_end_blkaddr < seg_end_blkaddr) {
3048 /* fix in-memory information all the time */
3049 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
3050 segment0_blkaddr) >> log_blocks_per_seg);
3052 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
3053 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3056 err = __f2fs_commit_super(bh, NULL);
3057 res = err ? "failed" : "done";
3059 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)",
3060 res, main_blkaddr, seg_end_blkaddr,
3061 segment_count_main << log_blocks_per_seg);
3068 static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
3069 struct buffer_head *bh)
3071 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main;
3072 block_t total_sections, blocks_per_seg;
3073 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3074 (bh->b_data + F2FS_SUPER_OFFSET);
3075 size_t crc_offset = 0;
3078 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
3079 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
3080 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
3084 /* Check checksum_offset and crc in superblock */
3085 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
3086 crc_offset = le32_to_cpu(raw_super->checksum_offset);
3088 offsetof(struct f2fs_super_block, crc)) {
3089 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
3091 return -EFSCORRUPTED;
3093 crc = le32_to_cpu(raw_super->crc);
3094 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
3095 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
3096 return -EFSCORRUPTED;
3100 /* Currently, support only 4KB block size */
3101 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) {
3102 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u",
3103 le32_to_cpu(raw_super->log_blocksize),
3105 return -EFSCORRUPTED;
3108 /* check log blocks per segment */
3109 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
3110 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
3111 le32_to_cpu(raw_super->log_blocks_per_seg));
3112 return -EFSCORRUPTED;
3115 /* Currently, support 512/1024/2048/4096 bytes sector size */
3116 if (le32_to_cpu(raw_super->log_sectorsize) >
3117 F2FS_MAX_LOG_SECTOR_SIZE ||
3118 le32_to_cpu(raw_super->log_sectorsize) <
3119 F2FS_MIN_LOG_SECTOR_SIZE) {
3120 f2fs_info(sbi, "Invalid log sectorsize (%u)",
3121 le32_to_cpu(raw_super->log_sectorsize));
3122 return -EFSCORRUPTED;
3124 if (le32_to_cpu(raw_super->log_sectors_per_block) +
3125 le32_to_cpu(raw_super->log_sectorsize) !=
3126 F2FS_MAX_LOG_SECTOR_SIZE) {
3127 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
3128 le32_to_cpu(raw_super->log_sectors_per_block),
3129 le32_to_cpu(raw_super->log_sectorsize));
3130 return -EFSCORRUPTED;
3133 segment_count = le32_to_cpu(raw_super->segment_count);
3134 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3135 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3136 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3137 total_sections = le32_to_cpu(raw_super->section_count);
3139 /* blocks_per_seg should be 512, given the above check */
3140 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
3142 if (segment_count > F2FS_MAX_SEGMENT ||
3143 segment_count < F2FS_MIN_SEGMENTS) {
3144 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
3145 return -EFSCORRUPTED;
3148 if (total_sections > segment_count_main || total_sections < 1 ||
3149 segs_per_sec > segment_count || !segs_per_sec) {
3150 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
3151 segment_count, total_sections, segs_per_sec);
3152 return -EFSCORRUPTED;
3155 if (segment_count_main != total_sections * segs_per_sec) {
3156 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)",
3157 segment_count_main, total_sections, segs_per_sec);
3158 return -EFSCORRUPTED;
3161 if ((segment_count / segs_per_sec) < total_sections) {
3162 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
3163 segment_count, segs_per_sec, total_sections);
3164 return -EFSCORRUPTED;
3167 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
3168 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
3169 segment_count, le64_to_cpu(raw_super->block_count));
3170 return -EFSCORRUPTED;
3173 if (RDEV(0).path[0]) {
3174 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
3177 while (i < MAX_DEVICES && RDEV(i).path[0]) {
3178 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
3181 if (segment_count != dev_seg_count) {
3182 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
3183 segment_count, dev_seg_count);
3184 return -EFSCORRUPTED;
3187 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) &&
3188 !bdev_is_zoned(sbi->sb->s_bdev)) {
3189 f2fs_info(sbi, "Zoned block device path is missing");
3190 return -EFSCORRUPTED;
3194 if (secs_per_zone > total_sections || !secs_per_zone) {
3195 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
3196 secs_per_zone, total_sections);
3197 return -EFSCORRUPTED;
3199 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
3200 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
3201 (le32_to_cpu(raw_super->extension_count) +
3202 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
3203 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
3204 le32_to_cpu(raw_super->extension_count),
3205 raw_super->hot_ext_count,
3206 F2FS_MAX_EXTENSION);
3207 return -EFSCORRUPTED;
3210 if (le32_to_cpu(raw_super->cp_payload) >
3211 (blocks_per_seg - F2FS_CP_PACKS)) {
3212 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
3213 le32_to_cpu(raw_super->cp_payload),
3214 blocks_per_seg - F2FS_CP_PACKS);
3215 return -EFSCORRUPTED;
3218 /* check reserved ino info */
3219 if (le32_to_cpu(raw_super->node_ino) != 1 ||
3220 le32_to_cpu(raw_super->meta_ino) != 2 ||
3221 le32_to_cpu(raw_super->root_ino) != 3) {
3222 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
3223 le32_to_cpu(raw_super->node_ino),
3224 le32_to_cpu(raw_super->meta_ino),
3225 le32_to_cpu(raw_super->root_ino));
3226 return -EFSCORRUPTED;
3229 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
3230 if (sanity_check_area_boundary(sbi, bh))
3231 return -EFSCORRUPTED;
3236 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
3238 unsigned int total, fsmeta;
3239 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3240 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3241 unsigned int ovp_segments, reserved_segments;
3242 unsigned int main_segs, blocks_per_seg;
3243 unsigned int sit_segs, nat_segs;
3244 unsigned int sit_bitmap_size, nat_bitmap_size;
3245 unsigned int log_blocks_per_seg;
3246 unsigned int segment_count_main;
3247 unsigned int cp_pack_start_sum, cp_payload;
3248 block_t user_block_count, valid_user_blocks;
3249 block_t avail_node_count, valid_node_count;
3252 total = le32_to_cpu(raw_super->segment_count);
3253 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
3254 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
3256 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
3258 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
3259 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
3261 if (unlikely(fsmeta >= total))
3264 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
3265 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
3267 if (!f2fs_sb_has_readonly(sbi) &&
3268 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
3269 ovp_segments == 0 || reserved_segments == 0)) {
3270 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
3273 user_block_count = le64_to_cpu(ckpt->user_block_count);
3274 segment_count_main = le32_to_cpu(raw_super->segment_count_main) +
3275 (f2fs_sb_has_readonly(sbi) ? 1 : 0);
3276 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3277 if (!user_block_count || user_block_count >=
3278 segment_count_main << log_blocks_per_seg) {
3279 f2fs_err(sbi, "Wrong user_block_count: %u",
3284 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
3285 if (valid_user_blocks > user_block_count) {
3286 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
3287 valid_user_blocks, user_block_count);
3291 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
3292 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
3293 if (valid_node_count > avail_node_count) {
3294 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
3295 valid_node_count, avail_node_count);
3299 main_segs = le32_to_cpu(raw_super->segment_count_main);
3300 blocks_per_seg = sbi->blocks_per_seg;
3302 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3303 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
3304 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
3307 if (f2fs_sb_has_readonly(sbi))
3310 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
3311 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3312 le32_to_cpu(ckpt->cur_node_segno[j])) {
3313 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
3315 le32_to_cpu(ckpt->cur_node_segno[i]));
3321 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
3322 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
3323 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
3326 if (f2fs_sb_has_readonly(sbi))
3329 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
3330 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
3331 le32_to_cpu(ckpt->cur_data_segno[j])) {
3332 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
3334 le32_to_cpu(ckpt->cur_data_segno[i]));
3339 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3340 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
3341 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3342 le32_to_cpu(ckpt->cur_data_segno[j])) {
3343 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
3345 le32_to_cpu(ckpt->cur_node_segno[i]));
3351 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
3352 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
3354 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
3355 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
3356 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
3357 sit_bitmap_size, nat_bitmap_size);
3361 cp_pack_start_sum = __start_sum_addr(sbi);
3362 cp_payload = __cp_payload(sbi);
3363 if (cp_pack_start_sum < cp_payload + 1 ||
3364 cp_pack_start_sum > blocks_per_seg - 1 -
3365 NR_CURSEG_PERSIST_TYPE) {
3366 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
3371 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
3372 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
3373 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
3374 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
3375 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
3376 le32_to_cpu(ckpt->checksum_offset));
3380 if (unlikely(f2fs_cp_error(sbi))) {
3381 f2fs_err(sbi, "A bug case: need to run fsck");
3387 static void init_sb_info(struct f2fs_sb_info *sbi)
3389 struct f2fs_super_block *raw_super = sbi->raw_super;
3392 sbi->log_sectors_per_block =
3393 le32_to_cpu(raw_super->log_sectors_per_block);
3394 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
3395 sbi->blocksize = 1 << sbi->log_blocksize;
3396 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3397 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
3398 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3399 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3400 sbi->total_sections = le32_to_cpu(raw_super->section_count);
3401 sbi->total_node_count =
3402 (le32_to_cpu(raw_super->segment_count_nat) / 2)
3403 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
3404 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino);
3405 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino);
3406 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino);
3407 sbi->cur_victim_sec = NULL_SECNO;
3408 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
3409 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
3410 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
3411 sbi->migration_granularity = sbi->segs_per_sec;
3413 sbi->dir_level = DEF_DIR_LEVEL;
3414 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
3415 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
3416 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
3417 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
3418 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
3419 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
3420 DEF_UMOUNT_DISCARD_TIMEOUT;
3421 clear_sbi_flag(sbi, SBI_NEED_FSCK);
3423 for (i = 0; i < NR_COUNT_TYPE; i++)
3424 atomic_set(&sbi->nr_pages[i], 0);
3426 for (i = 0; i < META; i++)
3427 atomic_set(&sbi->wb_sync_req[i], 0);
3429 INIT_LIST_HEAD(&sbi->s_list);
3430 mutex_init(&sbi->umount_mutex);
3431 init_rwsem(&sbi->io_order_lock);
3432 spin_lock_init(&sbi->cp_lock);
3434 sbi->dirty_device = 0;
3435 spin_lock_init(&sbi->dev_lock);
3437 init_rwsem(&sbi->sb_lock);
3438 init_rwsem(&sbi->pin_sem);
3441 static int init_percpu_info(struct f2fs_sb_info *sbi)
3445 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
3449 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
3452 percpu_counter_destroy(&sbi->alloc_valid_block_count);
3457 #ifdef CONFIG_BLK_DEV_ZONED
3459 struct f2fs_report_zones_args {
3460 struct f2fs_dev_info *dev;
3461 bool zone_cap_mismatch;
3464 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
3467 struct f2fs_report_zones_args *rz_args = data;
3469 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
3472 set_bit(idx, rz_args->dev->blkz_seq);
3473 rz_args->dev->zone_capacity_blocks[idx] = zone->capacity >>
3474 F2FS_LOG_SECTORS_PER_BLOCK;
3475 if (zone->len != zone->capacity && !rz_args->zone_cap_mismatch)
3476 rz_args->zone_cap_mismatch = true;
3481 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
3483 struct block_device *bdev = FDEV(devi).bdev;
3484 sector_t nr_sectors = bdev_nr_sectors(bdev);
3485 struct f2fs_report_zones_args rep_zone_arg;
3488 if (!f2fs_sb_has_blkzoned(sbi))
3491 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
3492 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3494 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3495 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3496 __ilog2_u32(sbi->blocks_per_blkz))
3498 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3499 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3500 sbi->log_blocks_per_blkz;
3501 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3502 FDEV(devi).nr_blkz++;
3504 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
3505 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3506 * sizeof(unsigned long),
3508 if (!FDEV(devi).blkz_seq)
3511 /* Get block zones type and zone-capacity */
3512 FDEV(devi).zone_capacity_blocks = f2fs_kzalloc(sbi,
3513 FDEV(devi).nr_blkz * sizeof(block_t),
3515 if (!FDEV(devi).zone_capacity_blocks)
3518 rep_zone_arg.dev = &FDEV(devi);
3519 rep_zone_arg.zone_cap_mismatch = false;
3521 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3526 if (!rep_zone_arg.zone_cap_mismatch) {
3527 kfree(FDEV(devi).zone_capacity_blocks);
3528 FDEV(devi).zone_capacity_blocks = NULL;
3536 * Read f2fs raw super block.
3537 * Because we have two copies of super block, so read both of them
3538 * to get the first valid one. If any one of them is broken, we pass
3539 * them recovery flag back to the caller.
3541 static int read_raw_super_block(struct f2fs_sb_info *sbi,
3542 struct f2fs_super_block **raw_super,
3543 int *valid_super_block, int *recovery)
3545 struct super_block *sb = sbi->sb;
3547 struct buffer_head *bh;
3548 struct f2fs_super_block *super;
3551 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3555 for (block = 0; block < 2; block++) {
3556 bh = sb_bread(sb, block);
3558 f2fs_err(sbi, "Unable to read %dth superblock",
3565 /* sanity checking of raw super */
3566 err = sanity_check_raw_super(sbi, bh);
3568 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3576 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3578 *valid_super_block = block;
3584 /* No valid superblock */
3593 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
3595 struct buffer_head *bh;
3599 if ((recover && f2fs_readonly(sbi->sb)) ||
3600 bdev_read_only(sbi->sb->s_bdev)) {
3601 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3605 /* we should update superblock crc here */
3606 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
3607 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3608 offsetof(struct f2fs_super_block, crc));
3609 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3612 /* write back-up superblock first */
3613 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
3616 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3619 /* if we are in recovery path, skip writing valid superblock */
3623 /* write current valid superblock */
3624 bh = sb_bread(sbi->sb, sbi->valid_super_block);
3627 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3632 static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3634 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3635 unsigned int max_devices = MAX_DEVICES;
3638 /* Initialize single device information */
3639 if (!RDEV(0).path[0]) {
3640 if (!bdev_is_zoned(sbi->sb->s_bdev))
3646 * Initialize multiple devices information, or single
3647 * zoned block device information.
3649 sbi->devs = f2fs_kzalloc(sbi,
3650 array_size(max_devices,
3651 sizeof(struct f2fs_dev_info)),
3656 for (i = 0; i < max_devices; i++) {
3658 if (i > 0 && !RDEV(i).path[0])
3661 if (max_devices == 1) {
3662 /* Single zoned block device mount */
3664 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3665 sbi->sb->s_mode, sbi->sb->s_type);
3667 /* Multi-device mount */
3668 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3669 FDEV(i).total_segments =
3670 le32_to_cpu(RDEV(i).total_segments);
3672 FDEV(i).start_blk = 0;
3673 FDEV(i).end_blk = FDEV(i).start_blk +
3674 (FDEV(i).total_segments <<
3675 sbi->log_blocks_per_seg) - 1 +
3676 le32_to_cpu(raw_super->segment0_blkaddr);
3678 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3679 FDEV(i).end_blk = FDEV(i).start_blk +
3680 (FDEV(i).total_segments <<
3681 sbi->log_blocks_per_seg) - 1;
3683 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3684 sbi->sb->s_mode, sbi->sb->s_type);
3686 if (IS_ERR(FDEV(i).bdev))
3687 return PTR_ERR(FDEV(i).bdev);
3689 /* to release errored devices */
3690 sbi->s_ndevs = i + 1;
3692 #ifdef CONFIG_BLK_DEV_ZONED
3693 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
3694 !f2fs_sb_has_blkzoned(sbi)) {
3695 f2fs_err(sbi, "Zoned block device feature not enabled");
3698 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3699 if (init_blkz_info(sbi, i)) {
3700 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3703 if (max_devices == 1)
3705 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3707 FDEV(i).total_segments,
3708 FDEV(i).start_blk, FDEV(i).end_blk,
3709 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3710 "Host-aware" : "Host-managed");
3714 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3716 FDEV(i).total_segments,
3717 FDEV(i).start_blk, FDEV(i).end_blk);
3720 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3724 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3726 #ifdef CONFIG_UNICODE
3727 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) {
3728 const struct f2fs_sb_encodings *encoding_info;
3729 struct unicode_map *encoding;
3730 __u16 encoding_flags;
3732 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3735 "Encoding requested by superblock is unknown");
3739 encoding = utf8_load(encoding_info->version);
3740 if (IS_ERR(encoding)) {
3742 "can't mount with superblock charset: %s-%s "
3743 "not supported by the kernel. flags: 0x%x.",
3744 encoding_info->name, encoding_info->version,
3746 return PTR_ERR(encoding);
3748 f2fs_info(sbi, "Using encoding defined by superblock: "
3749 "%s-%s with flags 0x%hx", encoding_info->name,
3750 encoding_info->version?:"\b", encoding_flags);
3752 sbi->sb->s_encoding = encoding;
3753 sbi->sb->s_encoding_flags = encoding_flags;
3756 if (f2fs_sb_has_casefold(sbi)) {
3757 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3764 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3766 struct f2fs_sm_info *sm_i = SM_I(sbi);
3768 /* adjust parameters according to the volume size */
3769 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
3770 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
3771 sm_i->dcc_info->discard_granularity = 1;
3772 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3775 sbi->readdir_ra = 1;
3778 static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3780 struct f2fs_sb_info *sbi;
3781 struct f2fs_super_block *raw_super;
3784 bool skip_recovery = false, need_fsck = false;
3785 char *options = NULL;
3786 int recovery, i, valid_super_block;
3787 struct curseg_info *seg_i;
3793 valid_super_block = -1;
3796 /* allocate memory for f2fs-specific super block info */
3797 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3803 /* Load the checksum driver */
3804 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3805 if (IS_ERR(sbi->s_chksum_driver)) {
3806 f2fs_err(sbi, "Cannot load crc32 driver.");
3807 err = PTR_ERR(sbi->s_chksum_driver);
3808 sbi->s_chksum_driver = NULL;
3812 /* set a block size */
3813 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
3814 f2fs_err(sbi, "unable to set blocksize");
3818 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
3823 sb->s_fs_info = sbi;
3824 sbi->raw_super = raw_super;
3826 /* precompute checksum seed for metadata */
3827 if (f2fs_sb_has_inode_chksum(sbi))
3828 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3829 sizeof(raw_super->uuid));
3831 default_options(sbi);
3832 /* parse mount options */
3833 options = kstrdup((const char *)data, GFP_KERNEL);
3834 if (data && !options) {
3839 err = parse_options(sb, options, false);
3843 sb->s_maxbytes = max_file_blocks(NULL) <<
3844 le32_to_cpu(raw_super->log_blocksize);
3845 sb->s_max_links = F2FS_LINK_MAX;
3847 err = f2fs_setup_casefold(sbi);
3852 sb->dq_op = &f2fs_quota_operations;
3853 sb->s_qcop = &f2fs_quotactl_ops;
3854 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
3856 if (f2fs_sb_has_quota_ino(sbi)) {
3857 for (i = 0; i < MAXQUOTAS; i++) {
3858 if (f2fs_qf_ino(sbi->sb, i))
3859 sbi->nquota_files++;
3864 sb->s_op = &f2fs_sops;
3865 #ifdef CONFIG_FS_ENCRYPTION
3866 sb->s_cop = &f2fs_cryptops;
3868 #ifdef CONFIG_FS_VERITY
3869 sb->s_vop = &f2fs_verityops;
3871 sb->s_xattr = f2fs_xattr_handlers;
3872 sb->s_export_op = &f2fs_export_ops;
3873 sb->s_magic = F2FS_SUPER_MAGIC;
3874 sb->s_time_gran = 1;
3875 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3876 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
3877 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
3878 sb->s_iflags |= SB_I_CGROUPWB;
3880 /* init f2fs-specific super block info */
3881 sbi->valid_super_block = valid_super_block;
3882 init_rwsem(&sbi->gc_lock);
3883 mutex_init(&sbi->writepages);
3884 init_rwsem(&sbi->cp_global_sem);
3885 init_rwsem(&sbi->node_write);
3886 init_rwsem(&sbi->node_change);
3888 /* disallow all the data/node/meta page writes */
3889 set_sbi_flag(sbi, SBI_POR_DOING);
3890 spin_lock_init(&sbi->stat_lock);
3892 /* init iostat info */
3893 spin_lock_init(&sbi->iostat_lock);
3894 sbi->iostat_enable = false;
3895 sbi->iostat_period_ms = DEFAULT_IOSTAT_PERIOD_MS;
3897 for (i = 0; i < NR_PAGE_TYPE; i++) {
3898 int n = (i == META) ? 1 : NR_TEMP_TYPE;
3904 sizeof(struct f2fs_bio_info)),
3906 if (!sbi->write_io[i]) {
3911 for (j = HOT; j < n; j++) {
3912 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3913 sbi->write_io[i][j].sbi = sbi;
3914 sbi->write_io[i][j].bio = NULL;
3915 spin_lock_init(&sbi->write_io[i][j].io_lock);
3916 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
3917 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
3918 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
3922 init_rwsem(&sbi->cp_rwsem);
3923 init_rwsem(&sbi->quota_sem);
3924 init_waitqueue_head(&sbi->cp_wait);
3927 err = init_percpu_info(sbi);
3931 if (F2FS_IO_ALIGNED(sbi)) {
3932 sbi->write_io_dummy =
3933 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
3934 if (!sbi->write_io_dummy) {
3940 /* init per sbi slab cache */
3941 err = f2fs_init_xattr_caches(sbi);
3944 err = f2fs_init_page_array_cache(sbi);
3946 goto free_xattr_cache;
3948 /* get an inode for meta space */
3949 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3950 if (IS_ERR(sbi->meta_inode)) {
3951 f2fs_err(sbi, "Failed to read F2FS meta data inode");
3952 err = PTR_ERR(sbi->meta_inode);
3953 goto free_page_array_cache;
3956 err = f2fs_get_valid_checkpoint(sbi);
3958 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
3959 goto free_meta_inode;
3962 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3963 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
3964 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3965 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3966 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3969 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3970 set_sbi_flag(sbi, SBI_NEED_FSCK);
3972 /* Initialize device list */
3973 err = f2fs_scan_devices(sbi);
3975 f2fs_err(sbi, "Failed to find devices");
3979 err = f2fs_init_post_read_wq(sbi);
3981 f2fs_err(sbi, "Failed to initialize post read workqueue");
3985 sbi->total_valid_node_count =
3986 le32_to_cpu(sbi->ckpt->valid_node_count);
3987 percpu_counter_set(&sbi->total_valid_inode_count,
3988 le32_to_cpu(sbi->ckpt->valid_inode_count));
3989 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3990 sbi->total_valid_block_count =
3991 le64_to_cpu(sbi->ckpt->valid_block_count);
3992 sbi->last_valid_block_count = sbi->total_valid_block_count;
3993 sbi->reserved_blocks = 0;
3994 sbi->current_reserved_blocks = 0;
3995 limit_reserve_root(sbi);
3996 adjust_unusable_cap_perc(sbi);
3998 for (i = 0; i < NR_INODE_TYPE; i++) {
3999 INIT_LIST_HEAD(&sbi->inode_list[i]);
4000 spin_lock_init(&sbi->inode_lock[i]);
4002 mutex_init(&sbi->flush_lock);
4004 f2fs_init_extent_cache_info(sbi);
4006 f2fs_init_ino_entry_info(sbi);
4008 f2fs_init_fsync_node_info(sbi);
4010 /* setup checkpoint request control and start checkpoint issue thread */
4011 f2fs_init_ckpt_req_control(sbi);
4012 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
4013 test_opt(sbi, MERGE_CHECKPOINT)) {
4014 err = f2fs_start_ckpt_thread(sbi);
4017 "Failed to start F2FS issue_checkpoint_thread (%d)",
4019 goto stop_ckpt_thread;
4023 /* setup f2fs internal modules */
4024 err = f2fs_build_segment_manager(sbi);
4026 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
4030 err = f2fs_build_node_manager(sbi);
4032 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
4037 /* For write statistics */
4038 sbi->sectors_written_start = f2fs_get_sectors_written(sbi);
4040 /* Read accumulated write IO statistics if exists */
4041 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
4042 if (__exist_node_summaries(sbi))
4043 sbi->kbytes_written =
4044 le64_to_cpu(seg_i->journal->info.kbytes_written);
4046 f2fs_build_gc_manager(sbi);
4048 err = f2fs_build_stats(sbi);
4052 /* get an inode for node space */
4053 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
4054 if (IS_ERR(sbi->node_inode)) {
4055 f2fs_err(sbi, "Failed to read node inode");
4056 err = PTR_ERR(sbi->node_inode);
4060 /* read root inode and dentry */
4061 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
4063 f2fs_err(sbi, "Failed to read root inode");
4064 err = PTR_ERR(root);
4065 goto free_node_inode;
4067 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
4068 !root->i_size || !root->i_nlink) {
4071 goto free_node_inode;
4074 sb->s_root = d_make_root(root); /* allocate root dentry */
4077 goto free_node_inode;
4080 err = f2fs_init_compress_inode(sbi);
4082 goto free_root_inode;
4084 err = f2fs_register_sysfs(sbi);
4086 goto free_compress_inode;
4089 /* Enable quota usage during mount */
4090 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
4091 err = f2fs_enable_quotas(sb);
4093 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
4096 /* if there are any orphan inodes, free them */
4097 err = f2fs_recover_orphan_inodes(sbi);
4101 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
4102 goto reset_checkpoint;
4104 /* recover fsynced data */
4105 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
4106 !test_opt(sbi, NORECOVERY)) {
4108 * mount should be failed, when device has readonly mode, and
4109 * previous checkpoint was not done by clean system shutdown.
4111 if (f2fs_hw_is_readonly(sbi)) {
4112 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4113 err = f2fs_recover_fsync_data(sbi, true);
4116 f2fs_err(sbi, "Need to recover fsync data, but "
4117 "write access unavailable, please try "
4118 "mount w/ disable_roll_forward or norecovery");
4123 f2fs_info(sbi, "write access unavailable, skipping recovery");
4124 goto reset_checkpoint;
4128 set_sbi_flag(sbi, SBI_NEED_FSCK);
4131 goto reset_checkpoint;
4133 err = f2fs_recover_fsync_data(sbi, false);
4136 skip_recovery = true;
4138 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
4143 err = f2fs_recover_fsync_data(sbi, true);
4145 if (!f2fs_readonly(sb) && err > 0) {
4147 f2fs_err(sbi, "Need to recover fsync data");
4153 * If the f2fs is not readonly and fsync data recovery succeeds,
4154 * check zoned block devices' write pointer consistency.
4156 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
4157 err = f2fs_check_write_pointer(sbi);
4163 f2fs_init_inmem_curseg(sbi);
4165 /* f2fs_recover_fsync_data() cleared this already */
4166 clear_sbi_flag(sbi, SBI_POR_DOING);
4168 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
4169 err = f2fs_disable_checkpoint(sbi);
4171 goto sync_free_meta;
4172 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
4173 f2fs_enable_checkpoint(sbi);
4177 * If filesystem is not mounted as read-only then
4178 * do start the gc_thread.
4180 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF ||
4181 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) {
4182 /* After POR, we can run background GC thread.*/
4183 err = f2fs_start_gc_thread(sbi);
4185 goto sync_free_meta;
4189 /* recover broken superblock */
4191 err = f2fs_commit_super(sbi, true);
4192 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
4193 sbi->valid_super_block ? 1 : 2, err);
4196 f2fs_join_shrinker(sbi);
4198 f2fs_tuning_parameters(sbi);
4200 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
4201 cur_cp_version(F2FS_CKPT(sbi)));
4202 f2fs_update_time(sbi, CP_TIME);
4203 f2fs_update_time(sbi, REQ_TIME);
4204 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4208 /* safe to flush all the data */
4209 sync_filesystem(sbi->sb);
4214 f2fs_truncate_quota_inode_pages(sb);
4215 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
4216 f2fs_quota_off_umount(sbi->sb);
4219 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4220 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4221 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
4222 * falls into an infinite loop in f2fs_sync_meta_pages().
4224 truncate_inode_pages_final(META_MAPPING(sbi));
4225 /* evict some inodes being cached by GC */
4227 f2fs_unregister_sysfs(sbi);
4228 free_compress_inode:
4229 f2fs_destroy_compress_inode(sbi);
4234 f2fs_release_ino_entry(sbi, true);
4235 truncate_inode_pages_final(NODE_MAPPING(sbi));
4236 iput(sbi->node_inode);
4237 sbi->node_inode = NULL;
4239 f2fs_destroy_stats(sbi);
4241 f2fs_destroy_node_manager(sbi);
4243 f2fs_destroy_segment_manager(sbi);
4244 f2fs_destroy_post_read_wq(sbi);
4246 f2fs_stop_ckpt_thread(sbi);
4248 destroy_device_list(sbi);
4251 make_bad_inode(sbi->meta_inode);
4252 iput(sbi->meta_inode);
4253 sbi->meta_inode = NULL;
4254 free_page_array_cache:
4255 f2fs_destroy_page_array_cache(sbi);
4257 f2fs_destroy_xattr_caches(sbi);
4259 mempool_destroy(sbi->write_io_dummy);
4261 destroy_percpu_info(sbi);
4263 for (i = 0; i < NR_PAGE_TYPE; i++)
4264 kvfree(sbi->write_io[i]);
4266 #ifdef CONFIG_UNICODE
4267 utf8_unload(sb->s_encoding);
4268 sb->s_encoding = NULL;
4272 for (i = 0; i < MAXQUOTAS; i++)
4273 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4275 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
4280 if (sbi->s_chksum_driver)
4281 crypto_free_shash(sbi->s_chksum_driver);
4284 /* give only one another chance */
4285 if (retry_cnt > 0 && skip_recovery) {
4287 shrink_dcache_sb(sb);
4293 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
4294 const char *dev_name, void *data)
4296 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
4299 static void kill_f2fs_super(struct super_block *sb)
4302 struct f2fs_sb_info *sbi = F2FS_SB(sb);
4304 set_sbi_flag(sbi, SBI_IS_CLOSE);
4305 f2fs_stop_gc_thread(sbi);
4306 f2fs_stop_discard_thread(sbi);
4308 #ifdef CONFIG_F2FS_FS_COMPRESSION
4310 * latter evict_inode() can bypass checking and invalidating
4311 * compress inode cache.
4313 if (test_opt(sbi, COMPRESS_CACHE))
4314 truncate_inode_pages_final(COMPRESS_MAPPING(sbi));
4317 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
4318 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4319 struct cp_control cpc = {
4320 .reason = CP_UMOUNT,
4322 f2fs_write_checkpoint(sbi, &cpc);
4325 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
4326 sb->s_flags &= ~SB_RDONLY;
4328 kill_block_super(sb);
4331 static struct file_system_type f2fs_fs_type = {
4332 .owner = THIS_MODULE,
4334 .mount = f2fs_mount,
4335 .kill_sb = kill_f2fs_super,
4336 .fs_flags = FS_REQUIRES_DEV,
4338 MODULE_ALIAS_FS("f2fs");
4340 static int __init init_inodecache(void)
4342 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
4343 sizeof(struct f2fs_inode_info), 0,
4344 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
4345 if (!f2fs_inode_cachep)
4350 static void destroy_inodecache(void)
4353 * Make sure all delayed rcu free inodes are flushed before we
4357 kmem_cache_destroy(f2fs_inode_cachep);
4360 static int __init init_f2fs_fs(void)
4364 if (PAGE_SIZE != F2FS_BLKSIZE) {
4365 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
4366 PAGE_SIZE, F2FS_BLKSIZE);
4370 err = init_inodecache();
4373 err = f2fs_create_node_manager_caches();
4375 goto free_inodecache;
4376 err = f2fs_create_segment_manager_caches();
4378 goto free_node_manager_caches;
4379 err = f2fs_create_checkpoint_caches();
4381 goto free_segment_manager_caches;
4382 err = f2fs_create_recovery_cache();
4384 goto free_checkpoint_caches;
4385 err = f2fs_create_extent_cache();
4387 goto free_recovery_cache;
4388 err = f2fs_create_garbage_collection_cache();
4390 goto free_extent_cache;
4391 err = f2fs_init_sysfs();
4393 goto free_garbage_collection_cache;
4394 err = register_shrinker(&f2fs_shrinker_info);
4397 err = register_filesystem(&f2fs_fs_type);
4400 f2fs_create_root_stats();
4401 err = f2fs_init_post_read_processing();
4403 goto free_root_stats;
4404 err = f2fs_init_bio_entry_cache();
4406 goto free_post_read;
4407 err = f2fs_init_bioset();
4409 goto free_bio_enrty_cache;
4410 err = f2fs_init_compress_mempool();
4413 err = f2fs_init_compress_cache();
4415 goto free_compress_mempool;
4416 err = f2fs_create_casefold_cache();
4418 goto free_compress_cache;
4420 free_compress_cache:
4421 f2fs_destroy_compress_cache();
4422 free_compress_mempool:
4423 f2fs_destroy_compress_mempool();
4425 f2fs_destroy_bioset();
4426 free_bio_enrty_cache:
4427 f2fs_destroy_bio_entry_cache();
4429 f2fs_destroy_post_read_processing();
4431 f2fs_destroy_root_stats();
4432 unregister_filesystem(&f2fs_fs_type);
4434 unregister_shrinker(&f2fs_shrinker_info);
4437 free_garbage_collection_cache:
4438 f2fs_destroy_garbage_collection_cache();
4440 f2fs_destroy_extent_cache();
4441 free_recovery_cache:
4442 f2fs_destroy_recovery_cache();
4443 free_checkpoint_caches:
4444 f2fs_destroy_checkpoint_caches();
4445 free_segment_manager_caches:
4446 f2fs_destroy_segment_manager_caches();
4447 free_node_manager_caches:
4448 f2fs_destroy_node_manager_caches();
4450 destroy_inodecache();
4455 static void __exit exit_f2fs_fs(void)
4457 f2fs_destroy_casefold_cache();
4458 f2fs_destroy_compress_cache();
4459 f2fs_destroy_compress_mempool();
4460 f2fs_destroy_bioset();
4461 f2fs_destroy_bio_entry_cache();
4462 f2fs_destroy_post_read_processing();
4463 f2fs_destroy_root_stats();
4464 unregister_filesystem(&f2fs_fs_type);
4465 unregister_shrinker(&f2fs_shrinker_info);
4467 f2fs_destroy_garbage_collection_cache();
4468 f2fs_destroy_extent_cache();
4469 f2fs_destroy_recovery_cache();
4470 f2fs_destroy_checkpoint_caches();
4471 f2fs_destroy_segment_manager_caches();
4472 f2fs_destroy_node_manager_caches();
4473 destroy_inodecache();
4476 module_init(init_f2fs_fs)
4477 module_exit(exit_f2fs_fs)
4479 MODULE_AUTHOR("Samsung Electronics's Praesto Team");
4480 MODULE_DESCRIPTION("Flash Friendly File System");
4481 MODULE_LICENSE("GPL");
4482 MODULE_SOFTDEP("pre: crc32");