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>
38 #define CREATE_TRACE_POINTS
39 #include <trace/events/f2fs.h>
41 static struct kmem_cache *f2fs_inode_cachep;
43 #ifdef CONFIG_F2FS_FAULT_INJECTION
45 const char *f2fs_fault_name[FAULT_MAX] = {
46 [FAULT_KMALLOC] = "kmalloc",
47 [FAULT_KVMALLOC] = "kvmalloc",
48 [FAULT_PAGE_ALLOC] = "page alloc",
49 [FAULT_PAGE_GET] = "page get",
50 [FAULT_ALLOC_NID] = "alloc nid",
51 [FAULT_ORPHAN] = "orphan",
52 [FAULT_BLOCK] = "no more block",
53 [FAULT_DIR_DEPTH] = "too big dir depth",
54 [FAULT_EVICT_INODE] = "evict_inode fail",
55 [FAULT_TRUNCATE] = "truncate fail",
56 [FAULT_READ_IO] = "read IO error",
57 [FAULT_CHECKPOINT] = "checkpoint error",
58 [FAULT_DISCARD] = "discard error",
59 [FAULT_WRITE_IO] = "write IO error",
60 [FAULT_SLAB_ALLOC] = "slab alloc",
63 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
66 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
69 atomic_set(&ffi->inject_ops, 0);
70 ffi->inject_rate = rate;
74 ffi->inject_type = type;
77 memset(ffi, 0, sizeof(struct f2fs_fault_info));
81 /* f2fs-wide shrinker description */
82 static struct shrinker f2fs_shrinker_info = {
83 .scan_objects = f2fs_shrink_scan,
84 .count_objects = f2fs_shrink_count,
85 .seeks = DEFAULT_SEEKS,
90 Opt_disable_roll_forward,
101 Opt_disable_ext_identify,
104 Opt_inline_xattr_size,
142 Opt_test_dummy_encryption,
144 Opt_checkpoint_disable,
145 Opt_checkpoint_disable_cap,
146 Opt_checkpoint_disable_cap_perc,
147 Opt_checkpoint_enable,
148 Opt_checkpoint_merge,
149 Opt_nocheckpoint_merge,
150 Opt_compress_algorithm,
151 Opt_compress_log_size,
152 Opt_compress_extension,
153 Opt_nocompress_extension,
164 static match_table_t f2fs_tokens = {
165 {Opt_gc_background, "background_gc=%s"},
166 {Opt_disable_roll_forward, "disable_roll_forward"},
167 {Opt_norecovery, "norecovery"},
168 {Opt_discard, "discard"},
169 {Opt_nodiscard, "nodiscard"},
170 {Opt_noheap, "no_heap"},
172 {Opt_user_xattr, "user_xattr"},
173 {Opt_nouser_xattr, "nouser_xattr"},
175 {Opt_noacl, "noacl"},
176 {Opt_active_logs, "active_logs=%u"},
177 {Opt_disable_ext_identify, "disable_ext_identify"},
178 {Opt_inline_xattr, "inline_xattr"},
179 {Opt_noinline_xattr, "noinline_xattr"},
180 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
181 {Opt_inline_data, "inline_data"},
182 {Opt_inline_dentry, "inline_dentry"},
183 {Opt_noinline_dentry, "noinline_dentry"},
184 {Opt_flush_merge, "flush_merge"},
185 {Opt_noflush_merge, "noflush_merge"},
186 {Opt_nobarrier, "nobarrier"},
187 {Opt_fastboot, "fastboot"},
188 {Opt_extent_cache, "extent_cache"},
189 {Opt_noextent_cache, "noextent_cache"},
190 {Opt_noinline_data, "noinline_data"},
191 {Opt_data_flush, "data_flush"},
192 {Opt_reserve_root, "reserve_root=%u"},
193 {Opt_resgid, "resgid=%u"},
194 {Opt_resuid, "resuid=%u"},
195 {Opt_mode, "mode=%s"},
196 {Opt_io_size_bits, "io_bits=%u"},
197 {Opt_fault_injection, "fault_injection=%u"},
198 {Opt_fault_type, "fault_type=%u"},
199 {Opt_lazytime, "lazytime"},
200 {Opt_nolazytime, "nolazytime"},
201 {Opt_quota, "quota"},
202 {Opt_noquota, "noquota"},
203 {Opt_usrquota, "usrquota"},
204 {Opt_grpquota, "grpquota"},
205 {Opt_prjquota, "prjquota"},
206 {Opt_usrjquota, "usrjquota=%s"},
207 {Opt_grpjquota, "grpjquota=%s"},
208 {Opt_prjjquota, "prjjquota=%s"},
209 {Opt_offusrjquota, "usrjquota="},
210 {Opt_offgrpjquota, "grpjquota="},
211 {Opt_offprjjquota, "prjjquota="},
212 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
213 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
214 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
215 {Opt_whint, "whint_mode=%s"},
216 {Opt_alloc, "alloc_mode=%s"},
217 {Opt_fsync, "fsync_mode=%s"},
218 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
219 {Opt_test_dummy_encryption, "test_dummy_encryption"},
220 {Opt_inlinecrypt, "inlinecrypt"},
221 {Opt_checkpoint_disable, "checkpoint=disable"},
222 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
223 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
224 {Opt_checkpoint_enable, "checkpoint=enable"},
225 {Opt_checkpoint_merge, "checkpoint_merge"},
226 {Opt_nocheckpoint_merge, "nocheckpoint_merge"},
227 {Opt_compress_algorithm, "compress_algorithm=%s"},
228 {Opt_compress_log_size, "compress_log_size=%u"},
229 {Opt_compress_extension, "compress_extension=%s"},
230 {Opt_nocompress_extension, "nocompress_extension=%s"},
231 {Opt_compress_chksum, "compress_chksum"},
232 {Opt_compress_mode, "compress_mode=%s"},
233 {Opt_compress_cache, "compress_cache"},
235 {Opt_gc_merge, "gc_merge"},
236 {Opt_nogc_merge, "nogc_merge"},
237 {Opt_discard_unit, "discard_unit=%s"},
241 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
243 struct va_format vaf;
249 level = printk_get_level(fmt);
250 vaf.fmt = printk_skip_level(fmt);
252 printk("%c%cF2FS-fs (%s): %pV\n",
253 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
258 #ifdef CONFIG_UNICODE
259 static const struct f2fs_sb_encodings {
263 } f2fs_sb_encoding_map[] = {
264 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
267 static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
268 const struct f2fs_sb_encodings **encoding,
271 __u16 magic = le16_to_cpu(sb->s_encoding);
274 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
275 if (magic == f2fs_sb_encoding_map[i].magic)
278 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
281 *encoding = &f2fs_sb_encoding_map[i];
282 *flags = le16_to_cpu(sb->s_encoding_flags);
287 struct kmem_cache *f2fs_cf_name_slab;
288 static int __init f2fs_create_casefold_cache(void)
290 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name",
292 if (!f2fs_cf_name_slab)
297 static void f2fs_destroy_casefold_cache(void)
299 kmem_cache_destroy(f2fs_cf_name_slab);
302 static int __init f2fs_create_casefold_cache(void) { return 0; }
303 static void f2fs_destroy_casefold_cache(void) { }
306 static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
308 block_t limit = min((sbi->user_block_count << 1) / 1000,
309 sbi->user_block_count - sbi->reserved_blocks);
312 if (test_opt(sbi, RESERVE_ROOT) &&
313 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
314 F2FS_OPTION(sbi).root_reserved_blocks = limit;
315 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
316 F2FS_OPTION(sbi).root_reserved_blocks);
318 if (!test_opt(sbi, RESERVE_ROOT) &&
319 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
320 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
321 !gid_eq(F2FS_OPTION(sbi).s_resgid,
322 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
323 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
324 from_kuid_munged(&init_user_ns,
325 F2FS_OPTION(sbi).s_resuid),
326 from_kgid_munged(&init_user_ns,
327 F2FS_OPTION(sbi).s_resgid));
330 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
332 if (!F2FS_OPTION(sbi).unusable_cap_perc)
335 if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
336 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
338 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
339 F2FS_OPTION(sbi).unusable_cap_perc;
341 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
342 F2FS_OPTION(sbi).unusable_cap,
343 F2FS_OPTION(sbi).unusable_cap_perc);
346 static void init_once(void *foo)
348 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
350 inode_init_once(&fi->vfs_inode);
354 static const char * const quotatypes[] = INITQFNAMES;
355 #define QTYPE2NAME(t) (quotatypes[t])
356 static int f2fs_set_qf_name(struct super_block *sb, int qtype,
359 struct f2fs_sb_info *sbi = F2FS_SB(sb);
363 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
364 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
367 if (f2fs_sb_has_quota_ino(sbi)) {
368 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
372 qname = match_strdup(args);
374 f2fs_err(sbi, "Not enough memory for storing quotafile name");
377 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
378 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
381 f2fs_err(sbi, "%s quota file already specified",
385 if (strchr(qname, '/')) {
386 f2fs_err(sbi, "quotafile must be on filesystem root");
389 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
397 static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
399 struct f2fs_sb_info *sbi = F2FS_SB(sb);
401 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
402 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
405 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
406 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
410 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
413 * We do the test below only for project quotas. 'usrquota' and
414 * 'grpquota' mount options are allowed even without quota feature
415 * to support legacy quotas in quota files.
417 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
418 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
421 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
422 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
423 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
424 if (test_opt(sbi, USRQUOTA) &&
425 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
426 clear_opt(sbi, USRQUOTA);
428 if (test_opt(sbi, GRPQUOTA) &&
429 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
430 clear_opt(sbi, GRPQUOTA);
432 if (test_opt(sbi, PRJQUOTA) &&
433 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
434 clear_opt(sbi, PRJQUOTA);
436 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
437 test_opt(sbi, PRJQUOTA)) {
438 f2fs_err(sbi, "old and new quota format mixing");
442 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
443 f2fs_err(sbi, "journaled quota format not specified");
448 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
449 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
450 F2FS_OPTION(sbi).s_jquota_fmt = 0;
456 static int f2fs_set_test_dummy_encryption(struct super_block *sb,
458 const substring_t *arg,
461 struct f2fs_sb_info *sbi = F2FS_SB(sb);
462 #ifdef CONFIG_FS_ENCRYPTION
465 if (!f2fs_sb_has_encrypt(sbi)) {
466 f2fs_err(sbi, "Encrypt feature is off");
471 * This mount option is just for testing, and it's not worthwhile to
472 * implement the extra complexity (e.g. RCU protection) that would be
473 * needed to allow it to be set or changed during remount. We do allow
474 * it to be specified during remount, but only if there is no change.
476 if (is_remount && !F2FS_OPTION(sbi).dummy_enc_policy.policy) {
477 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
480 err = fscrypt_set_test_dummy_encryption(
481 sb, arg->from, &F2FS_OPTION(sbi).dummy_enc_policy);
485 "Can't change test_dummy_encryption on remount");
486 else if (err == -EINVAL)
487 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
490 f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
494 f2fs_warn(sbi, "Test dummy encryption mode enabled");
496 f2fs_warn(sbi, "Test dummy encryption mount option ignored");
501 #ifdef CONFIG_F2FS_FS_COMPRESSION
503 * 1. The same extension name cannot not appear in both compress and non-compress extension
505 * 2. If the compress extension specifies all files, the types specified by the non-compress
506 * extension will be treated as special cases and will not be compressed.
507 * 3. Don't allow the non-compress extension specifies all files.
509 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi)
511 unsigned char (*ext)[F2FS_EXTENSION_LEN];
512 unsigned char (*noext)[F2FS_EXTENSION_LEN];
513 int ext_cnt, noext_cnt, index = 0, no_index = 0;
515 ext = F2FS_OPTION(sbi).extensions;
516 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
517 noext = F2FS_OPTION(sbi).noextensions;
518 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
523 for (no_index = 0; no_index < noext_cnt; no_index++) {
524 if (!strcasecmp("*", noext[no_index])) {
525 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files");
528 for (index = 0; index < ext_cnt; index++) {
529 if (!strcasecmp(ext[index], noext[no_index])) {
530 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension",
539 #ifdef CONFIG_F2FS_FS_LZ4
540 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
542 #ifdef CONFIG_F2FS_FS_LZ4HC
546 if (strlen(str) == 3) {
547 F2FS_OPTION(sbi).compress_level = 0;
551 #ifdef CONFIG_F2FS_FS_LZ4HC
555 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
558 if (kstrtouint(str + 1, 10, &level))
561 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
562 f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
566 F2FS_OPTION(sbi).compress_level = level;
569 f2fs_info(sbi, "kernel doesn't support lz4hc compression");
575 #ifdef CONFIG_F2FS_FS_ZSTD
576 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
581 if (strlen(str) == len) {
582 F2FS_OPTION(sbi).compress_level = 0;
589 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
592 if (kstrtouint(str + 1, 10, &level))
595 if (!level || level > ZSTD_maxCLevel()) {
596 f2fs_info(sbi, "invalid zstd compress level: %d", level);
600 F2FS_OPTION(sbi).compress_level = level;
606 static int parse_options(struct super_block *sb, char *options, bool is_remount)
608 struct f2fs_sb_info *sbi = F2FS_SB(sb);
609 substring_t args[MAX_OPT_ARGS];
610 #ifdef CONFIG_F2FS_FS_COMPRESSION
611 unsigned char (*ext)[F2FS_EXTENSION_LEN];
612 unsigned char (*noext)[F2FS_EXTENSION_LEN];
613 int ext_cnt, noext_cnt;
624 while ((p = strsep(&options, ",")) != NULL) {
630 * Initialize args struct so we know whether arg was
631 * found; some options take optional arguments.
633 args[0].to = args[0].from = NULL;
634 token = match_token(p, f2fs_tokens, args);
637 case Opt_gc_background:
638 name = match_strdup(&args[0]);
642 if (!strcmp(name, "on")) {
643 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
644 } else if (!strcmp(name, "off")) {
645 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
646 } else if (!strcmp(name, "sync")) {
647 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
654 case Opt_disable_roll_forward:
655 set_opt(sbi, DISABLE_ROLL_FORWARD);
658 /* this option mounts f2fs with ro */
659 set_opt(sbi, NORECOVERY);
660 if (!f2fs_readonly(sb))
664 if (!f2fs_hw_support_discard(sbi)) {
665 f2fs_warn(sbi, "device does not support discard");
668 set_opt(sbi, DISCARD);
671 if (f2fs_hw_should_discard(sbi)) {
672 f2fs_warn(sbi, "discard is required for zoned block devices");
675 clear_opt(sbi, DISCARD);
678 set_opt(sbi, NOHEAP);
681 clear_opt(sbi, NOHEAP);
683 #ifdef CONFIG_F2FS_FS_XATTR
685 set_opt(sbi, XATTR_USER);
687 case Opt_nouser_xattr:
688 clear_opt(sbi, XATTR_USER);
690 case Opt_inline_xattr:
691 set_opt(sbi, INLINE_XATTR);
693 case Opt_noinline_xattr:
694 clear_opt(sbi, INLINE_XATTR);
696 case Opt_inline_xattr_size:
697 if (args->from && match_int(args, &arg))
699 set_opt(sbi, INLINE_XATTR_SIZE);
700 F2FS_OPTION(sbi).inline_xattr_size = arg;
704 f2fs_info(sbi, "user_xattr options not supported");
706 case Opt_nouser_xattr:
707 f2fs_info(sbi, "nouser_xattr options not supported");
709 case Opt_inline_xattr:
710 f2fs_info(sbi, "inline_xattr options not supported");
712 case Opt_noinline_xattr:
713 f2fs_info(sbi, "noinline_xattr options not supported");
716 #ifdef CONFIG_F2FS_FS_POSIX_ACL
718 set_opt(sbi, POSIX_ACL);
721 clear_opt(sbi, POSIX_ACL);
725 f2fs_info(sbi, "acl options not supported");
728 f2fs_info(sbi, "noacl options not supported");
731 case Opt_active_logs:
732 if (args->from && match_int(args, &arg))
734 if (arg != 2 && arg != 4 &&
735 arg != NR_CURSEG_PERSIST_TYPE)
737 F2FS_OPTION(sbi).active_logs = arg;
739 case Opt_disable_ext_identify:
740 set_opt(sbi, DISABLE_EXT_IDENTIFY);
742 case Opt_inline_data:
743 set_opt(sbi, INLINE_DATA);
745 case Opt_inline_dentry:
746 set_opt(sbi, INLINE_DENTRY);
748 case Opt_noinline_dentry:
749 clear_opt(sbi, INLINE_DENTRY);
751 case Opt_flush_merge:
752 set_opt(sbi, FLUSH_MERGE);
754 case Opt_noflush_merge:
755 clear_opt(sbi, FLUSH_MERGE);
758 set_opt(sbi, NOBARRIER);
761 set_opt(sbi, FASTBOOT);
763 case Opt_extent_cache:
764 set_opt(sbi, EXTENT_CACHE);
766 case Opt_noextent_cache:
767 clear_opt(sbi, EXTENT_CACHE);
769 case Opt_noinline_data:
770 clear_opt(sbi, INLINE_DATA);
773 set_opt(sbi, DATA_FLUSH);
775 case Opt_reserve_root:
776 if (args->from && match_int(args, &arg))
778 if (test_opt(sbi, RESERVE_ROOT)) {
779 f2fs_info(sbi, "Preserve previous reserve_root=%u",
780 F2FS_OPTION(sbi).root_reserved_blocks);
782 F2FS_OPTION(sbi).root_reserved_blocks = arg;
783 set_opt(sbi, RESERVE_ROOT);
787 if (args->from && match_int(args, &arg))
789 uid = make_kuid(current_user_ns(), arg);
790 if (!uid_valid(uid)) {
791 f2fs_err(sbi, "Invalid uid value %d", arg);
794 F2FS_OPTION(sbi).s_resuid = uid;
797 if (args->from && match_int(args, &arg))
799 gid = make_kgid(current_user_ns(), arg);
800 if (!gid_valid(gid)) {
801 f2fs_err(sbi, "Invalid gid value %d", arg);
804 F2FS_OPTION(sbi).s_resgid = gid;
807 name = match_strdup(&args[0]);
811 if (!strcmp(name, "adaptive")) {
812 if (f2fs_sb_has_blkzoned(sbi)) {
813 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
817 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
818 } else if (!strcmp(name, "lfs")) {
819 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
826 case Opt_io_size_bits:
827 if (args->from && match_int(args, &arg))
829 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) {
830 f2fs_warn(sbi, "Not support %d, larger than %d",
831 1 << arg, BIO_MAX_VECS);
834 F2FS_OPTION(sbi).write_io_size_bits = arg;
836 #ifdef CONFIG_F2FS_FAULT_INJECTION
837 case Opt_fault_injection:
838 if (args->from && match_int(args, &arg))
840 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
841 set_opt(sbi, FAULT_INJECTION);
845 if (args->from && match_int(args, &arg))
847 f2fs_build_fault_attr(sbi, 0, arg);
848 set_opt(sbi, FAULT_INJECTION);
851 case Opt_fault_injection:
852 f2fs_info(sbi, "fault_injection options not supported");
856 f2fs_info(sbi, "fault_type options not supported");
860 sb->s_flags |= SB_LAZYTIME;
863 sb->s_flags &= ~SB_LAZYTIME;
868 set_opt(sbi, USRQUOTA);
871 set_opt(sbi, GRPQUOTA);
874 set_opt(sbi, PRJQUOTA);
877 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
882 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
887 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
891 case Opt_offusrjquota:
892 ret = f2fs_clear_qf_name(sb, USRQUOTA);
896 case Opt_offgrpjquota:
897 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
901 case Opt_offprjjquota:
902 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
906 case Opt_jqfmt_vfsold:
907 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
909 case Opt_jqfmt_vfsv0:
910 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
912 case Opt_jqfmt_vfsv1:
913 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
916 clear_opt(sbi, QUOTA);
917 clear_opt(sbi, USRQUOTA);
918 clear_opt(sbi, GRPQUOTA);
919 clear_opt(sbi, PRJQUOTA);
929 case Opt_offusrjquota:
930 case Opt_offgrpjquota:
931 case Opt_offprjjquota:
932 case Opt_jqfmt_vfsold:
933 case Opt_jqfmt_vfsv0:
934 case Opt_jqfmt_vfsv1:
936 f2fs_info(sbi, "quota operations not supported");
940 name = match_strdup(&args[0]);
943 if (!strcmp(name, "user-based")) {
944 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
945 } else if (!strcmp(name, "off")) {
946 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
947 } else if (!strcmp(name, "fs-based")) {
948 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
956 name = match_strdup(&args[0]);
960 if (!strcmp(name, "default")) {
961 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
962 } else if (!strcmp(name, "reuse")) {
963 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
971 name = match_strdup(&args[0]);
974 if (!strcmp(name, "posix")) {
975 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
976 } else if (!strcmp(name, "strict")) {
977 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
978 } else if (!strcmp(name, "nobarrier")) {
979 F2FS_OPTION(sbi).fsync_mode =
980 FSYNC_MODE_NOBARRIER;
987 case Opt_test_dummy_encryption:
988 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
993 case Opt_inlinecrypt:
994 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
995 sb->s_flags |= SB_INLINECRYPT;
997 f2fs_info(sbi, "inline encryption not supported");
1000 case Opt_checkpoint_disable_cap_perc:
1001 if (args->from && match_int(args, &arg))
1003 if (arg < 0 || arg > 100)
1005 F2FS_OPTION(sbi).unusable_cap_perc = arg;
1006 set_opt(sbi, DISABLE_CHECKPOINT);
1008 case Opt_checkpoint_disable_cap:
1009 if (args->from && match_int(args, &arg))
1011 F2FS_OPTION(sbi).unusable_cap = arg;
1012 set_opt(sbi, DISABLE_CHECKPOINT);
1014 case Opt_checkpoint_disable:
1015 set_opt(sbi, DISABLE_CHECKPOINT);
1017 case Opt_checkpoint_enable:
1018 clear_opt(sbi, DISABLE_CHECKPOINT);
1020 case Opt_checkpoint_merge:
1021 set_opt(sbi, MERGE_CHECKPOINT);
1023 case Opt_nocheckpoint_merge:
1024 clear_opt(sbi, MERGE_CHECKPOINT);
1026 #ifdef CONFIG_F2FS_FS_COMPRESSION
1027 case Opt_compress_algorithm:
1028 if (!f2fs_sb_has_compression(sbi)) {
1029 f2fs_info(sbi, "Image doesn't support compression");
1032 name = match_strdup(&args[0]);
1035 if (!strcmp(name, "lzo")) {
1036 #ifdef CONFIG_F2FS_FS_LZO
1037 F2FS_OPTION(sbi).compress_level = 0;
1038 F2FS_OPTION(sbi).compress_algorithm =
1041 f2fs_info(sbi, "kernel doesn't support lzo compression");
1043 } else if (!strncmp(name, "lz4", 3)) {
1044 #ifdef CONFIG_F2FS_FS_LZ4
1045 ret = f2fs_set_lz4hc_level(sbi, name);
1050 F2FS_OPTION(sbi).compress_algorithm =
1053 f2fs_info(sbi, "kernel doesn't support lz4 compression");
1055 } else if (!strncmp(name, "zstd", 4)) {
1056 #ifdef CONFIG_F2FS_FS_ZSTD
1057 ret = f2fs_set_zstd_level(sbi, name);
1062 F2FS_OPTION(sbi).compress_algorithm =
1065 f2fs_info(sbi, "kernel doesn't support zstd compression");
1067 } else if (!strcmp(name, "lzo-rle")) {
1068 #ifdef CONFIG_F2FS_FS_LZORLE
1069 F2FS_OPTION(sbi).compress_level = 0;
1070 F2FS_OPTION(sbi).compress_algorithm =
1073 f2fs_info(sbi, "kernel doesn't support lzorle compression");
1081 case Opt_compress_log_size:
1082 if (!f2fs_sb_has_compression(sbi)) {
1083 f2fs_info(sbi, "Image doesn't support compression");
1086 if (args->from && match_int(args, &arg))
1088 if (arg < MIN_COMPRESS_LOG_SIZE ||
1089 arg > MAX_COMPRESS_LOG_SIZE) {
1091 "Compress cluster log size is out of range");
1094 F2FS_OPTION(sbi).compress_log_size = arg;
1096 case Opt_compress_extension:
1097 if (!f2fs_sb_has_compression(sbi)) {
1098 f2fs_info(sbi, "Image doesn't support compression");
1101 name = match_strdup(&args[0]);
1105 ext = F2FS_OPTION(sbi).extensions;
1106 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
1108 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1109 ext_cnt >= COMPRESS_EXT_NUM) {
1111 "invalid extension length/number");
1116 strcpy(ext[ext_cnt], name);
1117 F2FS_OPTION(sbi).compress_ext_cnt++;
1120 case Opt_nocompress_extension:
1121 if (!f2fs_sb_has_compression(sbi)) {
1122 f2fs_info(sbi, "Image doesn't support compression");
1125 name = match_strdup(&args[0]);
1129 noext = F2FS_OPTION(sbi).noextensions;
1130 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
1132 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1133 noext_cnt >= COMPRESS_EXT_NUM) {
1135 "invalid extension length/number");
1140 strcpy(noext[noext_cnt], name);
1141 F2FS_OPTION(sbi).nocompress_ext_cnt++;
1144 case Opt_compress_chksum:
1145 F2FS_OPTION(sbi).compress_chksum = true;
1147 case Opt_compress_mode:
1148 name = match_strdup(&args[0]);
1151 if (!strcmp(name, "fs")) {
1152 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1153 } else if (!strcmp(name, "user")) {
1154 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER;
1161 case Opt_compress_cache:
1162 set_opt(sbi, COMPRESS_CACHE);
1165 case Opt_compress_algorithm:
1166 case Opt_compress_log_size:
1167 case Opt_compress_extension:
1168 case Opt_nocompress_extension:
1169 case Opt_compress_chksum:
1170 case Opt_compress_mode:
1171 case Opt_compress_cache:
1172 f2fs_info(sbi, "compression options not supported");
1179 set_opt(sbi, GC_MERGE);
1181 case Opt_nogc_merge:
1182 clear_opt(sbi, GC_MERGE);
1184 case Opt_discard_unit:
1185 name = match_strdup(&args[0]);
1188 if (!strcmp(name, "block")) {
1189 F2FS_OPTION(sbi).discard_unit =
1191 } else if (!strcmp(name, "segment")) {
1192 F2FS_OPTION(sbi).discard_unit =
1193 DISCARD_UNIT_SEGMENT;
1194 } else if (!strcmp(name, "section")) {
1195 F2FS_OPTION(sbi).discard_unit =
1196 DISCARD_UNIT_SECTION;
1204 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
1211 if (f2fs_check_quota_options(sbi))
1214 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
1215 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1218 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
1219 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
1223 #ifndef CONFIG_UNICODE
1224 if (f2fs_sb_has_casefold(sbi)) {
1226 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
1231 * The BLKZONED feature indicates that the drive was formatted with
1232 * zone alignment optimization. This is optional for host-aware
1233 * devices, but mandatory for host-managed zoned block devices.
1235 #ifndef CONFIG_BLK_DEV_ZONED
1236 if (f2fs_sb_has_blkzoned(sbi)) {
1237 f2fs_err(sbi, "Zoned block device support is not enabled");
1241 if (f2fs_sb_has_blkzoned(sbi)) {
1242 if (F2FS_OPTION(sbi).discard_unit !=
1243 DISCARD_UNIT_SECTION) {
1244 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default");
1245 F2FS_OPTION(sbi).discard_unit =
1246 DISCARD_UNIT_SECTION;
1250 #ifdef CONFIG_F2FS_FS_COMPRESSION
1251 if (f2fs_test_compress_extension(sbi)) {
1252 f2fs_err(sbi, "invalid compress or nocompress extension");
1257 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
1258 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
1259 F2FS_IO_SIZE_KB(sbi));
1263 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
1264 int min_size, max_size;
1266 if (!f2fs_sb_has_extra_attr(sbi) ||
1267 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
1268 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
1271 if (!test_opt(sbi, INLINE_XATTR)) {
1272 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
1276 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
1277 max_size = MAX_INLINE_XATTR_SIZE;
1279 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
1280 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
1281 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
1282 min_size, max_size);
1287 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
1288 f2fs_err(sbi, "LFS not compatible with checkpoint=disable");
1292 /* Not pass down write hints if the number of active logs is lesser
1293 * than NR_CURSEG_PERSIST_TYPE.
1295 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
1296 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1298 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
1299 f2fs_err(sbi, "Allow to mount readonly mode only");
1305 static struct inode *f2fs_alloc_inode(struct super_block *sb)
1307 struct f2fs_inode_info *fi;
1309 fi = f2fs_kmem_cache_alloc(f2fs_inode_cachep,
1310 GFP_F2FS_ZERO, false, F2FS_SB(sb));
1314 init_once((void *) fi);
1316 /* Initialize f2fs-specific inode info */
1317 atomic_set(&fi->dirty_pages, 0);
1318 atomic_set(&fi->i_compr_blocks, 0);
1319 init_rwsem(&fi->i_sem);
1320 spin_lock_init(&fi->i_size_lock);
1321 INIT_LIST_HEAD(&fi->dirty_list);
1322 INIT_LIST_HEAD(&fi->gdirty_list);
1323 INIT_LIST_HEAD(&fi->inmem_ilist);
1324 INIT_LIST_HEAD(&fi->inmem_pages);
1325 mutex_init(&fi->inmem_lock);
1326 init_rwsem(&fi->i_gc_rwsem[READ]);
1327 init_rwsem(&fi->i_gc_rwsem[WRITE]);
1328 init_rwsem(&fi->i_xattr_sem);
1330 /* Will be used by directory only */
1331 fi->i_dir_level = F2FS_SB(sb)->dir_level;
1333 return &fi->vfs_inode;
1336 static int f2fs_drop_inode(struct inode *inode)
1338 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1342 * during filesystem shutdown, if checkpoint is disabled,
1343 * drop useless meta/node dirty pages.
1345 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1346 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1347 inode->i_ino == F2FS_META_INO(sbi)) {
1348 trace_f2fs_drop_inode(inode, 1);
1354 * This is to avoid a deadlock condition like below.
1355 * writeback_single_inode(inode)
1356 * - f2fs_write_data_page
1357 * - f2fs_gc -> iput -> evict
1358 * - inode_wait_for_writeback(inode)
1360 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
1361 if (!inode->i_nlink && !is_bad_inode(inode)) {
1362 /* to avoid evict_inode call simultaneously */
1363 atomic_inc(&inode->i_count);
1364 spin_unlock(&inode->i_lock);
1366 /* some remained atomic pages should discarded */
1367 if (f2fs_is_atomic_file(inode))
1368 f2fs_drop_inmem_pages(inode);
1370 /* should remain fi->extent_tree for writepage */
1371 f2fs_destroy_extent_node(inode);
1373 sb_start_intwrite(inode->i_sb);
1374 f2fs_i_size_write(inode, 0);
1376 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1377 inode, NULL, 0, DATA);
1378 truncate_inode_pages_final(inode->i_mapping);
1380 if (F2FS_HAS_BLOCKS(inode))
1381 f2fs_truncate(inode);
1383 sb_end_intwrite(inode->i_sb);
1385 spin_lock(&inode->i_lock);
1386 atomic_dec(&inode->i_count);
1388 trace_f2fs_drop_inode(inode, 0);
1391 ret = generic_drop_inode(inode);
1393 ret = fscrypt_drop_inode(inode);
1394 trace_f2fs_drop_inode(inode, ret);
1398 int f2fs_inode_dirtied(struct inode *inode, bool sync)
1400 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1403 spin_lock(&sbi->inode_lock[DIRTY_META]);
1404 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1407 set_inode_flag(inode, FI_DIRTY_INODE);
1408 stat_inc_dirty_inode(sbi, DIRTY_META);
1410 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1411 list_add_tail(&F2FS_I(inode)->gdirty_list,
1412 &sbi->inode_list[DIRTY_META]);
1413 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1415 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1419 void f2fs_inode_synced(struct inode *inode)
1421 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1423 spin_lock(&sbi->inode_lock[DIRTY_META]);
1424 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1425 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1428 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1429 list_del_init(&F2FS_I(inode)->gdirty_list);
1430 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1432 clear_inode_flag(inode, FI_DIRTY_INODE);
1433 clear_inode_flag(inode, FI_AUTO_RECOVER);
1434 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
1435 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1439 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1441 * We should call set_dirty_inode to write the dirty inode through write_inode.
1443 static void f2fs_dirty_inode(struct inode *inode, int flags)
1445 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1447 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1448 inode->i_ino == F2FS_META_INO(sbi))
1451 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1452 clear_inode_flag(inode, FI_AUTO_RECOVER);
1454 f2fs_inode_dirtied(inode, false);
1457 static void f2fs_free_inode(struct inode *inode)
1459 fscrypt_free_inode(inode);
1460 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1463 static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1465 percpu_counter_destroy(&sbi->alloc_valid_block_count);
1466 percpu_counter_destroy(&sbi->total_valid_inode_count);
1469 static void destroy_device_list(struct f2fs_sb_info *sbi)
1473 for (i = 0; i < sbi->s_ndevs; i++) {
1474 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1475 #ifdef CONFIG_BLK_DEV_ZONED
1476 kvfree(FDEV(i).blkz_seq);
1477 kfree(FDEV(i).zone_capacity_blocks);
1483 static void f2fs_put_super(struct super_block *sb)
1485 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1489 /* unregister procfs/sysfs entries in advance to avoid race case */
1490 f2fs_unregister_sysfs(sbi);
1492 f2fs_quota_off_umount(sb);
1494 /* prevent remaining shrinker jobs */
1495 mutex_lock(&sbi->umount_mutex);
1498 * flush all issued checkpoints and stop checkpoint issue thread.
1499 * after then, all checkpoints should be done by each process context.
1501 f2fs_stop_ckpt_thread(sbi);
1504 * We don't need to do checkpoint when superblock is clean.
1505 * But, the previous checkpoint was not done by umount, it needs to do
1506 * clean checkpoint again.
1508 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1509 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
1510 struct cp_control cpc = {
1511 .reason = CP_UMOUNT,
1513 f2fs_write_checkpoint(sbi, &cpc);
1516 /* be sure to wait for any on-going discard commands */
1517 dropped = f2fs_issue_discard_timeout(sbi);
1519 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1520 !sbi->discard_blks && !dropped) {
1521 struct cp_control cpc = {
1522 .reason = CP_UMOUNT | CP_TRIMMED,
1524 f2fs_write_checkpoint(sbi, &cpc);
1528 * normally superblock is clean, so we need to release this.
1529 * In addition, EIO will skip do checkpoint, we need this as well.
1531 f2fs_release_ino_entry(sbi, true);
1533 f2fs_leave_shrinker(sbi);
1534 mutex_unlock(&sbi->umount_mutex);
1536 /* our cp_error case, we can wait for any writeback page */
1537 f2fs_flush_merged_writes(sbi);
1539 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1541 f2fs_bug_on(sbi, sbi->fsync_node_num);
1543 f2fs_destroy_compress_inode(sbi);
1545 iput(sbi->node_inode);
1546 sbi->node_inode = NULL;
1548 iput(sbi->meta_inode);
1549 sbi->meta_inode = NULL;
1552 * iput() can update stat information, if f2fs_write_checkpoint()
1553 * above failed with error.
1555 f2fs_destroy_stats(sbi);
1557 /* destroy f2fs internal modules */
1558 f2fs_destroy_node_manager(sbi);
1559 f2fs_destroy_segment_manager(sbi);
1561 f2fs_destroy_post_read_wq(sbi);
1565 sb->s_fs_info = NULL;
1566 if (sbi->s_chksum_driver)
1567 crypto_free_shash(sbi->s_chksum_driver);
1568 kfree(sbi->raw_super);
1570 destroy_device_list(sbi);
1571 f2fs_destroy_page_array_cache(sbi);
1572 f2fs_destroy_xattr_caches(sbi);
1573 mempool_destroy(sbi->write_io_dummy);
1575 for (i = 0; i < MAXQUOTAS; i++)
1576 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
1578 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
1579 destroy_percpu_info(sbi);
1580 f2fs_destroy_iostat(sbi);
1581 for (i = 0; i < NR_PAGE_TYPE; i++)
1582 kvfree(sbi->write_io[i]);
1583 #ifdef CONFIG_UNICODE
1584 utf8_unload(sb->s_encoding);
1589 int f2fs_sync_fs(struct super_block *sb, int sync)
1591 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1594 if (unlikely(f2fs_cp_error(sbi)))
1596 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1599 trace_f2fs_sync_fs(sb, sync);
1601 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1605 err = f2fs_issue_checkpoint(sbi);
1610 static int f2fs_freeze(struct super_block *sb)
1612 if (f2fs_readonly(sb))
1615 /* IO error happened before */
1616 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1619 /* must be clean, since sync_filesystem() was already called */
1620 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1623 /* ensure no checkpoint required */
1624 if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list))
1629 static int f2fs_unfreeze(struct super_block *sb)
1635 static int f2fs_statfs_project(struct super_block *sb,
1636 kprojid_t projid, struct kstatfs *buf)
1639 struct dquot *dquot;
1643 qid = make_kqid_projid(projid);
1644 dquot = dqget(sb, qid);
1646 return PTR_ERR(dquot);
1647 spin_lock(&dquot->dq_dqb_lock);
1649 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1650 dquot->dq_dqb.dqb_bhardlimit);
1652 limit >>= sb->s_blocksize_bits;
1654 if (limit && buf->f_blocks > limit) {
1655 curblock = (dquot->dq_dqb.dqb_curspace +
1656 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
1657 buf->f_blocks = limit;
1658 buf->f_bfree = buf->f_bavail =
1659 (buf->f_blocks > curblock) ?
1660 (buf->f_blocks - curblock) : 0;
1663 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1664 dquot->dq_dqb.dqb_ihardlimit);
1666 if (limit && buf->f_files > limit) {
1667 buf->f_files = limit;
1669 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1670 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1673 spin_unlock(&dquot->dq_dqb_lock);
1679 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1681 struct super_block *sb = dentry->d_sb;
1682 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1683 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1684 block_t total_count, user_block_count, start_count;
1685 u64 avail_node_count;
1687 total_count = le64_to_cpu(sbi->raw_super->block_count);
1688 user_block_count = sbi->user_block_count;
1689 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
1690 buf->f_type = F2FS_SUPER_MAGIC;
1691 buf->f_bsize = sbi->blocksize;
1693 buf->f_blocks = total_count - start_count;
1694 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
1695 sbi->current_reserved_blocks;
1697 spin_lock(&sbi->stat_lock);
1698 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1701 buf->f_bfree -= sbi->unusable_block_count;
1702 spin_unlock(&sbi->stat_lock);
1704 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1705 buf->f_bavail = buf->f_bfree -
1706 F2FS_OPTION(sbi).root_reserved_blocks;
1710 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
1712 if (avail_node_count > user_block_count) {
1713 buf->f_files = user_block_count;
1714 buf->f_ffree = buf->f_bavail;
1716 buf->f_files = avail_node_count;
1717 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1721 buf->f_namelen = F2FS_NAME_LEN;
1722 buf->f_fsid = u64_to_fsid(id);
1725 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1726 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1727 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1733 static inline void f2fs_show_quota_options(struct seq_file *seq,
1734 struct super_block *sb)
1737 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1739 if (F2FS_OPTION(sbi).s_jquota_fmt) {
1742 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
1753 seq_printf(seq, ",jqfmt=%s", fmtname);
1756 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1757 seq_show_option(seq, "usrjquota",
1758 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
1760 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1761 seq_show_option(seq, "grpjquota",
1762 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
1764 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1765 seq_show_option(seq, "prjjquota",
1766 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
1770 #ifdef CONFIG_F2FS_FS_COMPRESSION
1771 static inline void f2fs_show_compress_options(struct seq_file *seq,
1772 struct super_block *sb)
1774 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1778 if (!f2fs_sb_has_compression(sbi))
1781 switch (F2FS_OPTION(sbi).compress_algorithm) {
1791 case COMPRESS_LZORLE:
1792 algtype = "lzo-rle";
1795 seq_printf(seq, ",compress_algorithm=%s", algtype);
1797 if (F2FS_OPTION(sbi).compress_level)
1798 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level);
1800 seq_printf(seq, ",compress_log_size=%u",
1801 F2FS_OPTION(sbi).compress_log_size);
1803 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1804 seq_printf(seq, ",compress_extension=%s",
1805 F2FS_OPTION(sbi).extensions[i]);
1808 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) {
1809 seq_printf(seq, ",nocompress_extension=%s",
1810 F2FS_OPTION(sbi).noextensions[i]);
1813 if (F2FS_OPTION(sbi).compress_chksum)
1814 seq_puts(seq, ",compress_chksum");
1816 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS)
1817 seq_printf(seq, ",compress_mode=%s", "fs");
1818 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER)
1819 seq_printf(seq, ",compress_mode=%s", "user");
1821 if (test_opt(sbi, COMPRESS_CACHE))
1822 seq_puts(seq, ",compress_cache");
1826 static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1828 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1830 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1831 seq_printf(seq, ",background_gc=%s", "sync");
1832 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1833 seq_printf(seq, ",background_gc=%s", "on");
1834 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
1835 seq_printf(seq, ",background_gc=%s", "off");
1837 if (test_opt(sbi, GC_MERGE))
1838 seq_puts(seq, ",gc_merge");
1840 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1841 seq_puts(seq, ",disable_roll_forward");
1842 if (test_opt(sbi, NORECOVERY))
1843 seq_puts(seq, ",norecovery");
1844 if (test_opt(sbi, DISCARD))
1845 seq_puts(seq, ",discard");
1847 seq_puts(seq, ",nodiscard");
1848 if (test_opt(sbi, NOHEAP))
1849 seq_puts(seq, ",no_heap");
1851 seq_puts(seq, ",heap");
1852 #ifdef CONFIG_F2FS_FS_XATTR
1853 if (test_opt(sbi, XATTR_USER))
1854 seq_puts(seq, ",user_xattr");
1856 seq_puts(seq, ",nouser_xattr");
1857 if (test_opt(sbi, INLINE_XATTR))
1858 seq_puts(seq, ",inline_xattr");
1860 seq_puts(seq, ",noinline_xattr");
1861 if (test_opt(sbi, INLINE_XATTR_SIZE))
1862 seq_printf(seq, ",inline_xattr_size=%u",
1863 F2FS_OPTION(sbi).inline_xattr_size);
1865 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1866 if (test_opt(sbi, POSIX_ACL))
1867 seq_puts(seq, ",acl");
1869 seq_puts(seq, ",noacl");
1871 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
1872 seq_puts(seq, ",disable_ext_identify");
1873 if (test_opt(sbi, INLINE_DATA))
1874 seq_puts(seq, ",inline_data");
1876 seq_puts(seq, ",noinline_data");
1877 if (test_opt(sbi, INLINE_DENTRY))
1878 seq_puts(seq, ",inline_dentry");
1880 seq_puts(seq, ",noinline_dentry");
1881 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
1882 seq_puts(seq, ",flush_merge");
1883 if (test_opt(sbi, NOBARRIER))
1884 seq_puts(seq, ",nobarrier");
1885 if (test_opt(sbi, FASTBOOT))
1886 seq_puts(seq, ",fastboot");
1887 if (test_opt(sbi, EXTENT_CACHE))
1888 seq_puts(seq, ",extent_cache");
1890 seq_puts(seq, ",noextent_cache");
1891 if (test_opt(sbi, DATA_FLUSH))
1892 seq_puts(seq, ",data_flush");
1894 seq_puts(seq, ",mode=");
1895 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
1896 seq_puts(seq, "adaptive");
1897 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
1898 seq_puts(seq, "lfs");
1899 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
1900 if (test_opt(sbi, RESERVE_ROOT))
1901 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
1902 F2FS_OPTION(sbi).root_reserved_blocks,
1903 from_kuid_munged(&init_user_ns,
1904 F2FS_OPTION(sbi).s_resuid),
1905 from_kgid_munged(&init_user_ns,
1906 F2FS_OPTION(sbi).s_resgid));
1907 if (F2FS_IO_SIZE_BITS(sbi))
1908 seq_printf(seq, ",io_bits=%u",
1909 F2FS_OPTION(sbi).write_io_size_bits);
1910 #ifdef CONFIG_F2FS_FAULT_INJECTION
1911 if (test_opt(sbi, FAULT_INJECTION)) {
1912 seq_printf(seq, ",fault_injection=%u",
1913 F2FS_OPTION(sbi).fault_info.inject_rate);
1914 seq_printf(seq, ",fault_type=%u",
1915 F2FS_OPTION(sbi).fault_info.inject_type);
1919 if (test_opt(sbi, QUOTA))
1920 seq_puts(seq, ",quota");
1921 if (test_opt(sbi, USRQUOTA))
1922 seq_puts(seq, ",usrquota");
1923 if (test_opt(sbi, GRPQUOTA))
1924 seq_puts(seq, ",grpquota");
1925 if (test_opt(sbi, PRJQUOTA))
1926 seq_puts(seq, ",prjquota");
1928 f2fs_show_quota_options(seq, sbi->sb);
1929 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
1930 seq_printf(seq, ",whint_mode=%s", "user-based");
1931 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
1932 seq_printf(seq, ",whint_mode=%s", "fs-based");
1934 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
1936 if (sbi->sb->s_flags & SB_INLINECRYPT)
1937 seq_puts(seq, ",inlinecrypt");
1939 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
1940 seq_printf(seq, ",alloc_mode=%s", "default");
1941 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
1942 seq_printf(seq, ",alloc_mode=%s", "reuse");
1944 if (test_opt(sbi, DISABLE_CHECKPOINT))
1945 seq_printf(seq, ",checkpoint=disable:%u",
1946 F2FS_OPTION(sbi).unusable_cap);
1947 if (test_opt(sbi, MERGE_CHECKPOINT))
1948 seq_puts(seq, ",checkpoint_merge");
1950 seq_puts(seq, ",nocheckpoint_merge");
1951 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
1952 seq_printf(seq, ",fsync_mode=%s", "posix");
1953 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
1954 seq_printf(seq, ",fsync_mode=%s", "strict");
1955 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1956 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
1958 #ifdef CONFIG_F2FS_FS_COMPRESSION
1959 f2fs_show_compress_options(seq, sbi->sb);
1962 if (test_opt(sbi, ATGC))
1963 seq_puts(seq, ",atgc");
1965 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK)
1966 seq_printf(seq, ",discard_unit=%s", "block");
1967 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT)
1968 seq_printf(seq, ",discard_unit=%s", "segment");
1969 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION)
1970 seq_printf(seq, ",discard_unit=%s", "section");
1975 static void default_options(struct f2fs_sb_info *sbi)
1977 /* init some FS parameters */
1978 if (f2fs_sb_has_readonly(sbi))
1979 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE;
1981 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
1983 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1984 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1985 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1986 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
1987 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1988 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
1989 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
1990 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
1991 F2FS_OPTION(sbi).compress_ext_cnt = 0;
1992 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1993 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
1995 sbi->sb->s_flags &= ~SB_INLINECRYPT;
1997 set_opt(sbi, INLINE_XATTR);
1998 set_opt(sbi, INLINE_DATA);
1999 set_opt(sbi, INLINE_DENTRY);
2000 set_opt(sbi, EXTENT_CACHE);
2001 set_opt(sbi, NOHEAP);
2002 clear_opt(sbi, DISABLE_CHECKPOINT);
2003 set_opt(sbi, MERGE_CHECKPOINT);
2004 F2FS_OPTION(sbi).unusable_cap = 0;
2005 sbi->sb->s_flags |= SB_LAZYTIME;
2006 set_opt(sbi, FLUSH_MERGE);
2007 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi))
2008 set_opt(sbi, DISCARD);
2009 if (f2fs_sb_has_blkzoned(sbi)) {
2010 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
2011 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION;
2013 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
2014 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK;
2017 #ifdef CONFIG_F2FS_FS_XATTR
2018 set_opt(sbi, XATTR_USER);
2020 #ifdef CONFIG_F2FS_FS_POSIX_ACL
2021 set_opt(sbi, POSIX_ACL);
2024 f2fs_build_fault_attr(sbi, 0, 0);
2028 static int f2fs_enable_quotas(struct super_block *sb);
2031 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
2033 unsigned int s_flags = sbi->sb->s_flags;
2034 struct cp_control cpc;
2039 if (s_flags & SB_RDONLY) {
2040 f2fs_err(sbi, "checkpoint=disable on readonly fs");
2043 sbi->sb->s_flags |= SB_ACTIVE;
2045 f2fs_update_time(sbi, DISABLE_TIME);
2047 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
2048 down_write(&sbi->gc_lock);
2049 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
2050 if (err == -ENODATA) {
2054 if (err && err != -EAGAIN)
2058 ret = sync_filesystem(sbi->sb);
2060 err = ret ? ret : err;
2064 unusable = f2fs_get_unusable_blocks(sbi);
2065 if (f2fs_disable_cp_again(sbi, unusable)) {
2070 down_write(&sbi->gc_lock);
2071 cpc.reason = CP_PAUSE;
2072 set_sbi_flag(sbi, SBI_CP_DISABLED);
2073 err = f2fs_write_checkpoint(sbi, &cpc);
2077 spin_lock(&sbi->stat_lock);
2078 sbi->unusable_block_count = unusable;
2079 spin_unlock(&sbi->stat_lock);
2082 up_write(&sbi->gc_lock);
2084 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
2088 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
2090 int retry = DEFAULT_RETRY_IO_COUNT;
2092 /* we should flush all the data to keep data consistency */
2094 sync_inodes_sb(sbi->sb);
2096 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
2097 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--);
2099 if (unlikely(retry < 0))
2100 f2fs_warn(sbi, "checkpoint=enable has some unwritten data.");
2102 down_write(&sbi->gc_lock);
2103 f2fs_dirty_to_prefree(sbi);
2105 clear_sbi_flag(sbi, SBI_CP_DISABLED);
2106 set_sbi_flag(sbi, SBI_IS_DIRTY);
2107 up_write(&sbi->gc_lock);
2109 f2fs_sync_fs(sbi->sb, 1);
2112 static int f2fs_remount(struct super_block *sb, int *flags, char *data)
2114 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2115 struct f2fs_mount_info org_mount_opt;
2116 unsigned long old_sb_flags;
2118 bool need_restart_gc = false, need_stop_gc = false;
2119 bool need_restart_ckpt = false, need_stop_ckpt = false;
2120 bool need_restart_flush = false, need_stop_flush = false;
2121 bool need_restart_discard = false, need_stop_discard = false;
2122 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
2123 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT);
2124 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
2125 bool no_atgc = !test_opt(sbi, ATGC);
2126 bool no_discard = !test_opt(sbi, DISCARD);
2127 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE);
2128 bool block_unit_discard = f2fs_block_unit_discard(sbi);
2129 struct discard_cmd_control *dcc;
2135 * Save the old mount options in case we
2136 * need to restore them.
2138 org_mount_opt = sbi->mount_opt;
2139 old_sb_flags = sb->s_flags;
2142 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
2143 for (i = 0; i < MAXQUOTAS; i++) {
2144 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2145 org_mount_opt.s_qf_names[i] =
2146 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
2148 if (!org_mount_opt.s_qf_names[i]) {
2149 for (j = 0; j < i; j++)
2150 kfree(org_mount_opt.s_qf_names[j]);
2154 org_mount_opt.s_qf_names[i] = NULL;
2159 /* recover superblocks we couldn't write due to previous RO mount */
2160 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
2161 err = f2fs_commit_super(sbi, false);
2162 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
2165 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2168 default_options(sbi);
2170 /* parse mount options */
2171 err = parse_options(sb, data, true);
2176 * Previous and new state of filesystem is RO,
2177 * so skip checking GC and FLUSH_MERGE conditions.
2179 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
2182 if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) {
2188 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
2189 err = dquot_suspend(sb, -1);
2192 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
2193 /* dquot_resume needs RW */
2194 sb->s_flags &= ~SB_RDONLY;
2195 if (sb_any_quota_suspended(sb)) {
2196 dquot_resume(sb, -1);
2197 } else if (f2fs_sb_has_quota_ino(sbi)) {
2198 err = f2fs_enable_quotas(sb);
2204 /* disallow enable atgc dynamically */
2205 if (no_atgc == !!test_opt(sbi, ATGC)) {
2207 f2fs_warn(sbi, "switch atgc option is not allowed");
2211 /* disallow enable/disable extent_cache dynamically */
2212 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
2214 f2fs_warn(sbi, "switch extent_cache option is not allowed");
2218 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
2220 f2fs_warn(sbi, "switch io_bits option is not allowed");
2224 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) {
2226 f2fs_warn(sbi, "switch compress_cache option is not allowed");
2230 if (block_unit_discard != f2fs_block_unit_discard(sbi)) {
2232 f2fs_warn(sbi, "switch discard_unit option is not allowed");
2236 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
2238 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
2243 * We stop the GC thread if FS is mounted as RO
2244 * or if background_gc = off is passed in mount
2245 * option. Also sync the filesystem.
2247 if ((*flags & SB_RDONLY) ||
2248 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF &&
2249 !test_opt(sbi, GC_MERGE))) {
2250 if (sbi->gc_thread) {
2251 f2fs_stop_gc_thread(sbi);
2252 need_restart_gc = true;
2254 } else if (!sbi->gc_thread) {
2255 err = f2fs_start_gc_thread(sbi);
2258 need_stop_gc = true;
2261 if (*flags & SB_RDONLY ||
2262 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
2265 set_sbi_flag(sbi, SBI_IS_DIRTY);
2266 set_sbi_flag(sbi, SBI_IS_CLOSE);
2267 f2fs_sync_fs(sb, 1);
2268 clear_sbi_flag(sbi, SBI_IS_CLOSE);
2271 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
2272 !test_opt(sbi, MERGE_CHECKPOINT)) {
2273 f2fs_stop_ckpt_thread(sbi);
2274 need_restart_ckpt = true;
2276 err = f2fs_start_ckpt_thread(sbi);
2279 "Failed to start F2FS issue_checkpoint_thread (%d)",
2283 need_stop_ckpt = true;
2287 * We stop issue flush thread if FS is mounted as RO
2288 * or if flush_merge is not passed in mount option.
2290 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
2291 clear_opt(sbi, FLUSH_MERGE);
2292 f2fs_destroy_flush_cmd_control(sbi, false);
2293 need_restart_flush = true;
2295 err = f2fs_create_flush_cmd_control(sbi);
2298 need_stop_flush = true;
2301 if (no_discard == !!test_opt(sbi, DISCARD)) {
2302 if (test_opt(sbi, DISCARD)) {
2303 err = f2fs_start_discard_thread(sbi);
2306 need_stop_discard = true;
2308 dcc = SM_I(sbi)->dcc_info;
2309 f2fs_stop_discard_thread(sbi);
2310 if (atomic_read(&dcc->discard_cmd_cnt))
2311 f2fs_issue_discard_timeout(sbi);
2312 need_restart_discard = true;
2316 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) {
2317 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
2318 err = f2fs_disable_checkpoint(sbi);
2320 goto restore_discard;
2322 f2fs_enable_checkpoint(sbi);
2328 /* Release old quota file names */
2329 for (i = 0; i < MAXQUOTAS; i++)
2330 kfree(org_mount_opt.s_qf_names[i]);
2332 /* Update the POSIXACL Flag */
2333 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
2334 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
2336 limit_reserve_root(sbi);
2337 adjust_unusable_cap_perc(sbi);
2338 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
2341 if (need_restart_discard) {
2342 if (f2fs_start_discard_thread(sbi))
2343 f2fs_warn(sbi, "discard has been stopped");
2344 } else if (need_stop_discard) {
2345 f2fs_stop_discard_thread(sbi);
2348 if (need_restart_flush) {
2349 if (f2fs_create_flush_cmd_control(sbi))
2350 f2fs_warn(sbi, "background flush thread has stopped");
2351 } else if (need_stop_flush) {
2352 clear_opt(sbi, FLUSH_MERGE);
2353 f2fs_destroy_flush_cmd_control(sbi, false);
2356 if (need_restart_ckpt) {
2357 if (f2fs_start_ckpt_thread(sbi))
2358 f2fs_warn(sbi, "background ckpt thread has stopped");
2359 } else if (need_stop_ckpt) {
2360 f2fs_stop_ckpt_thread(sbi);
2363 if (need_restart_gc) {
2364 if (f2fs_start_gc_thread(sbi))
2365 f2fs_warn(sbi, "background gc thread has stopped");
2366 } else if (need_stop_gc) {
2367 f2fs_stop_gc_thread(sbi);
2371 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
2372 for (i = 0; i < MAXQUOTAS; i++) {
2373 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
2374 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
2377 sbi->mount_opt = org_mount_opt;
2378 sb->s_flags = old_sb_flags;
2383 /* Read data from quotafile */
2384 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
2385 size_t len, loff_t off)
2387 struct inode *inode = sb_dqopt(sb)->files[type];
2388 struct address_space *mapping = inode->i_mapping;
2389 block_t blkidx = F2FS_BYTES_TO_BLK(off);
2390 int offset = off & (sb->s_blocksize - 1);
2393 loff_t i_size = i_size_read(inode);
2400 if (off + len > i_size)
2403 while (toread > 0) {
2404 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
2406 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
2408 if (PTR_ERR(page) == -ENOMEM) {
2409 congestion_wait(BLK_RW_ASYNC,
2410 DEFAULT_IO_TIMEOUT);
2413 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2414 return PTR_ERR(page);
2419 if (unlikely(page->mapping != mapping)) {
2420 f2fs_put_page(page, 1);
2423 if (unlikely(!PageUptodate(page))) {
2424 f2fs_put_page(page, 1);
2425 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2429 kaddr = kmap_atomic(page);
2430 memcpy(data, kaddr + offset, tocopy);
2431 kunmap_atomic(kaddr);
2432 f2fs_put_page(page, 1);
2442 /* Write to quotafile */
2443 static ssize_t f2fs_quota_write(struct super_block *sb, int type,
2444 const char *data, size_t len, loff_t off)
2446 struct inode *inode = sb_dqopt(sb)->files[type];
2447 struct address_space *mapping = inode->i_mapping;
2448 const struct address_space_operations *a_ops = mapping->a_ops;
2449 int offset = off & (sb->s_blocksize - 1);
2450 size_t towrite = len;
2452 void *fsdata = NULL;
2457 while (towrite > 0) {
2458 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
2461 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
2463 if (unlikely(err)) {
2464 if (err == -ENOMEM) {
2465 congestion_wait(BLK_RW_ASYNC,
2466 DEFAULT_IO_TIMEOUT);
2469 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2473 kaddr = kmap_atomic(page);
2474 memcpy(kaddr + offset, data, tocopy);
2475 kunmap_atomic(kaddr);
2476 flush_dcache_page(page);
2478 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
2489 inode->i_mtime = inode->i_ctime = current_time(inode);
2490 f2fs_mark_inode_dirty_sync(inode, false);
2491 return len - towrite;
2494 static struct dquot **f2fs_get_dquots(struct inode *inode)
2496 return F2FS_I(inode)->i_dquot;
2499 static qsize_t *f2fs_get_reserved_space(struct inode *inode)
2501 return &F2FS_I(inode)->i_reserved_quota;
2504 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
2506 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
2507 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
2511 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
2512 F2FS_OPTION(sbi).s_jquota_fmt, type);
2515 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
2520 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
2521 err = f2fs_enable_quotas(sbi->sb);
2523 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
2529 for (i = 0; i < MAXQUOTAS; i++) {
2530 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2531 err = f2fs_quota_on_mount(sbi, i);
2536 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2543 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2546 struct inode *qf_inode;
2547 unsigned long qf_inum;
2550 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
2552 qf_inum = f2fs_qf_ino(sb, type);
2556 qf_inode = f2fs_iget(sb, qf_inum);
2557 if (IS_ERR(qf_inode)) {
2558 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
2559 return PTR_ERR(qf_inode);
2562 /* Don't account quota for quota files to avoid recursion */
2563 qf_inode->i_flags |= S_NOQUOTA;
2564 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
2569 static int f2fs_enable_quotas(struct super_block *sb)
2571 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2573 unsigned long qf_inum;
2574 bool quota_mopt[MAXQUOTAS] = {
2575 test_opt(sbi, USRQUOTA),
2576 test_opt(sbi, GRPQUOTA),
2577 test_opt(sbi, PRJQUOTA),
2580 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
2581 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
2585 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2587 for (type = 0; type < MAXQUOTAS; type++) {
2588 qf_inum = f2fs_qf_ino(sb, type);
2590 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2591 DQUOT_USAGE_ENABLED |
2592 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2594 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2596 for (type--; type >= 0; type--)
2597 dquot_quota_off(sb, type);
2598 set_sbi_flag(F2FS_SB(sb),
2599 SBI_QUOTA_NEED_REPAIR);
2607 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type)
2609 struct quota_info *dqopt = sb_dqopt(sbi->sb);
2610 struct address_space *mapping = dqopt->files[type]->i_mapping;
2613 ret = dquot_writeback_dquots(sbi->sb, type);
2617 ret = filemap_fdatawrite(mapping);
2621 /* if we are using journalled quota */
2622 if (is_journalled_quota(sbi))
2625 ret = filemap_fdatawait(mapping);
2627 truncate_inode_pages(&dqopt->files[type]->i_data, 0);
2630 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2634 int f2fs_quota_sync(struct super_block *sb, int type)
2636 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2637 struct quota_info *dqopt = sb_dqopt(sb);
2642 * Now when everything is written we can discard the pagecache so
2643 * that userspace sees the changes.
2645 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
2647 if (type != -1 && cnt != type)
2650 if (!sb_has_quota_active(sb, type))
2653 inode_lock(dqopt->files[cnt]);
2658 * down_read(quota_sem)
2659 * dquot_writeback_dquots()
2662 * down_read(quota_sem)
2665 down_read(&sbi->quota_sem);
2667 ret = f2fs_quota_sync_file(sbi, cnt);
2669 up_read(&sbi->quota_sem);
2670 f2fs_unlock_op(sbi);
2672 inode_unlock(dqopt->files[cnt]);
2680 static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2681 const struct path *path)
2683 struct inode *inode;
2686 /* if quota sysfile exists, deny enabling quota with specific file */
2687 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2688 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2692 err = f2fs_quota_sync(sb, type);
2696 err = dquot_quota_on(sb, type, format_id, path);
2700 inode = d_inode(path->dentry);
2703 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
2704 f2fs_set_inode_flags(inode);
2705 inode_unlock(inode);
2706 f2fs_mark_inode_dirty_sync(inode, false);
2711 static int __f2fs_quota_off(struct super_block *sb, int type)
2713 struct inode *inode = sb_dqopt(sb)->files[type];
2716 if (!inode || !igrab(inode))
2717 return dquot_quota_off(sb, type);
2719 err = f2fs_quota_sync(sb, type);
2723 err = dquot_quota_off(sb, type);
2724 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
2728 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
2729 f2fs_set_inode_flags(inode);
2730 inode_unlock(inode);
2731 f2fs_mark_inode_dirty_sync(inode, false);
2737 static int f2fs_quota_off(struct super_block *sb, int type)
2739 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2742 err = __f2fs_quota_off(sb, type);
2745 * quotactl can shutdown journalled quota, result in inconsistence
2746 * between quota record and fs data by following updates, tag the
2747 * flag to let fsck be aware of it.
2749 if (is_journalled_quota(sbi))
2750 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2754 void f2fs_quota_off_umount(struct super_block *sb)
2759 for (type = 0; type < MAXQUOTAS; type++) {
2760 err = __f2fs_quota_off(sb, type);
2762 int ret = dquot_quota_off(sb, type);
2764 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2766 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2770 * In case of checkpoint=disable, we must flush quota blocks.
2771 * This can cause NULL exception for node_inode in end_io, since
2772 * put_super already dropped it.
2774 sync_filesystem(sb);
2777 static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2779 struct quota_info *dqopt = sb_dqopt(sb);
2782 for (type = 0; type < MAXQUOTAS; type++) {
2783 if (!dqopt->files[type])
2785 f2fs_inode_synced(dqopt->files[type]);
2789 static int f2fs_dquot_commit(struct dquot *dquot)
2791 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2794 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
2795 ret = dquot_commit(dquot);
2797 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2798 up_read(&sbi->quota_sem);
2802 static int f2fs_dquot_acquire(struct dquot *dquot)
2804 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2807 down_read(&sbi->quota_sem);
2808 ret = dquot_acquire(dquot);
2810 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2811 up_read(&sbi->quota_sem);
2815 static int f2fs_dquot_release(struct dquot *dquot)
2817 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2818 int ret = dquot_release(dquot);
2821 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2825 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2827 struct super_block *sb = dquot->dq_sb;
2828 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2829 int ret = dquot_mark_dquot_dirty(dquot);
2831 /* if we are using journalled quota */
2832 if (is_journalled_quota(sbi))
2833 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2838 static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2840 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2841 int ret = dquot_commit_info(sb, type);
2844 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2848 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
2850 *projid = F2FS_I(inode)->i_projid;
2854 static const struct dquot_operations f2fs_quota_operations = {
2855 .get_reserved_space = f2fs_get_reserved_space,
2856 .write_dquot = f2fs_dquot_commit,
2857 .acquire_dquot = f2fs_dquot_acquire,
2858 .release_dquot = f2fs_dquot_release,
2859 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2860 .write_info = f2fs_dquot_commit_info,
2861 .alloc_dquot = dquot_alloc,
2862 .destroy_dquot = dquot_destroy,
2863 .get_projid = f2fs_get_projid,
2864 .get_next_id = dquot_get_next_id,
2867 static const struct quotactl_ops f2fs_quotactl_ops = {
2868 .quota_on = f2fs_quota_on,
2869 .quota_off = f2fs_quota_off,
2870 .quota_sync = f2fs_quota_sync,
2871 .get_state = dquot_get_state,
2872 .set_info = dquot_set_dqinfo,
2873 .get_dqblk = dquot_get_dqblk,
2874 .set_dqblk = dquot_set_dqblk,
2875 .get_nextdqblk = dquot_get_next_dqblk,
2878 int f2fs_quota_sync(struct super_block *sb, int type)
2883 void f2fs_quota_off_umount(struct super_block *sb)
2888 static const struct super_operations f2fs_sops = {
2889 .alloc_inode = f2fs_alloc_inode,
2890 .free_inode = f2fs_free_inode,
2891 .drop_inode = f2fs_drop_inode,
2892 .write_inode = f2fs_write_inode,
2893 .dirty_inode = f2fs_dirty_inode,
2894 .show_options = f2fs_show_options,
2896 .quota_read = f2fs_quota_read,
2897 .quota_write = f2fs_quota_write,
2898 .get_dquots = f2fs_get_dquots,
2900 .evict_inode = f2fs_evict_inode,
2901 .put_super = f2fs_put_super,
2902 .sync_fs = f2fs_sync_fs,
2903 .freeze_fs = f2fs_freeze,
2904 .unfreeze_fs = f2fs_unfreeze,
2905 .statfs = f2fs_statfs,
2906 .remount_fs = f2fs_remount,
2909 #ifdef CONFIG_FS_ENCRYPTION
2910 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2912 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2913 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2917 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2920 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2923 * Encrypting the root directory is not allowed because fsck
2924 * expects lost+found directory to exist and remain unencrypted
2925 * if LOST_FOUND feature is enabled.
2928 if (f2fs_sb_has_lost_found(sbi) &&
2929 inode->i_ino == F2FS_ROOT_INO(sbi))
2932 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2933 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2934 ctx, len, fs_data, XATTR_CREATE);
2937 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
2939 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy;
2942 static bool f2fs_has_stable_inodes(struct super_block *sb)
2947 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
2948 int *ino_bits_ret, int *lblk_bits_ret)
2950 *ino_bits_ret = 8 * sizeof(nid_t);
2951 *lblk_bits_ret = 8 * sizeof(block_t);
2954 static int f2fs_get_num_devices(struct super_block *sb)
2956 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2958 if (f2fs_is_multi_device(sbi))
2959 return sbi->s_ndevs;
2963 static void f2fs_get_devices(struct super_block *sb,
2964 struct request_queue **devs)
2966 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2969 for (i = 0; i < sbi->s_ndevs; i++)
2970 devs[i] = bdev_get_queue(FDEV(i).bdev);
2973 static const struct fscrypt_operations f2fs_cryptops = {
2974 .key_prefix = "f2fs:",
2975 .get_context = f2fs_get_context,
2976 .set_context = f2fs_set_context,
2977 .get_dummy_policy = f2fs_get_dummy_policy,
2978 .empty_dir = f2fs_empty_dir,
2979 .max_namelen = F2FS_NAME_LEN,
2980 .has_stable_inodes = f2fs_has_stable_inodes,
2981 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
2982 .get_num_devices = f2fs_get_num_devices,
2983 .get_devices = f2fs_get_devices,
2987 static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2988 u64 ino, u32 generation)
2990 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2991 struct inode *inode;
2993 if (f2fs_check_nid_range(sbi, ino))
2994 return ERR_PTR(-ESTALE);
2997 * f2fs_iget isn't quite right if the inode is currently unallocated!
2998 * However f2fs_iget currently does appropriate checks to handle stale
2999 * inodes so everything is OK.
3001 inode = f2fs_iget(sb, ino);
3003 return ERR_CAST(inode);
3004 if (unlikely(generation && inode->i_generation != generation)) {
3005 /* we didn't find the right inode.. */
3007 return ERR_PTR(-ESTALE);
3012 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
3013 int fh_len, int fh_type)
3015 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
3016 f2fs_nfs_get_inode);
3019 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
3020 int fh_len, int fh_type)
3022 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
3023 f2fs_nfs_get_inode);
3026 static const struct export_operations f2fs_export_ops = {
3027 .fh_to_dentry = f2fs_fh_to_dentry,
3028 .fh_to_parent = f2fs_fh_to_parent,
3029 .get_parent = f2fs_get_parent,
3032 loff_t max_file_blocks(struct inode *inode)
3038 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
3039 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
3040 * space in inode.i_addr, it will be more safe to reassign
3044 if (inode && f2fs_compressed_file(inode))
3045 leaf_count = ADDRS_PER_BLOCK(inode);
3047 leaf_count = DEF_ADDRS_PER_BLOCK;
3049 /* two direct node blocks */
3050 result += (leaf_count * 2);
3052 /* two indirect node blocks */
3053 leaf_count *= NIDS_PER_BLOCK;
3054 result += (leaf_count * 2);
3056 /* one double indirect node block */
3057 leaf_count *= NIDS_PER_BLOCK;
3058 result += leaf_count;
3063 static int __f2fs_commit_super(struct buffer_head *bh,
3064 struct f2fs_super_block *super)
3068 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
3069 set_buffer_dirty(bh);
3072 /* it's rare case, we can do fua all the time */
3073 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
3076 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
3077 struct buffer_head *bh)
3079 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3080 (bh->b_data + F2FS_SUPER_OFFSET);
3081 struct super_block *sb = sbi->sb;
3082 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
3083 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
3084 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
3085 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
3086 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
3087 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
3088 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
3089 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
3090 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
3091 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
3092 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3093 u32 segment_count = le32_to_cpu(raw_super->segment_count);
3094 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3095 u64 main_end_blkaddr = main_blkaddr +
3096 (segment_count_main << log_blocks_per_seg);
3097 u64 seg_end_blkaddr = segment0_blkaddr +
3098 (segment_count << log_blocks_per_seg);
3100 if (segment0_blkaddr != cp_blkaddr) {
3101 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
3102 segment0_blkaddr, cp_blkaddr);
3106 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
3108 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
3109 cp_blkaddr, sit_blkaddr,
3110 segment_count_ckpt << log_blocks_per_seg);
3114 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
3116 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
3117 sit_blkaddr, nat_blkaddr,
3118 segment_count_sit << log_blocks_per_seg);
3122 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
3124 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
3125 nat_blkaddr, ssa_blkaddr,
3126 segment_count_nat << log_blocks_per_seg);
3130 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
3132 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
3133 ssa_blkaddr, main_blkaddr,
3134 segment_count_ssa << log_blocks_per_seg);
3138 if (main_end_blkaddr > seg_end_blkaddr) {
3139 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)",
3140 main_blkaddr, seg_end_blkaddr,
3141 segment_count_main << log_blocks_per_seg);
3143 } else if (main_end_blkaddr < seg_end_blkaddr) {
3147 /* fix in-memory information all the time */
3148 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
3149 segment0_blkaddr) >> log_blocks_per_seg);
3151 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
3152 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3155 err = __f2fs_commit_super(bh, NULL);
3156 res = err ? "failed" : "done";
3158 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)",
3159 res, main_blkaddr, seg_end_blkaddr,
3160 segment_count_main << log_blocks_per_seg);
3167 static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
3168 struct buffer_head *bh)
3170 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main;
3171 block_t total_sections, blocks_per_seg;
3172 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3173 (bh->b_data + F2FS_SUPER_OFFSET);
3174 size_t crc_offset = 0;
3177 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
3178 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
3179 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
3183 /* Check checksum_offset and crc in superblock */
3184 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
3185 crc_offset = le32_to_cpu(raw_super->checksum_offset);
3187 offsetof(struct f2fs_super_block, crc)) {
3188 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
3190 return -EFSCORRUPTED;
3192 crc = le32_to_cpu(raw_super->crc);
3193 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
3194 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
3195 return -EFSCORRUPTED;
3199 /* Currently, support only 4KB block size */
3200 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) {
3201 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u",
3202 le32_to_cpu(raw_super->log_blocksize),
3204 return -EFSCORRUPTED;
3207 /* check log blocks per segment */
3208 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
3209 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
3210 le32_to_cpu(raw_super->log_blocks_per_seg));
3211 return -EFSCORRUPTED;
3214 /* Currently, support 512/1024/2048/4096 bytes sector size */
3215 if (le32_to_cpu(raw_super->log_sectorsize) >
3216 F2FS_MAX_LOG_SECTOR_SIZE ||
3217 le32_to_cpu(raw_super->log_sectorsize) <
3218 F2FS_MIN_LOG_SECTOR_SIZE) {
3219 f2fs_info(sbi, "Invalid log sectorsize (%u)",
3220 le32_to_cpu(raw_super->log_sectorsize));
3221 return -EFSCORRUPTED;
3223 if (le32_to_cpu(raw_super->log_sectors_per_block) +
3224 le32_to_cpu(raw_super->log_sectorsize) !=
3225 F2FS_MAX_LOG_SECTOR_SIZE) {
3226 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
3227 le32_to_cpu(raw_super->log_sectors_per_block),
3228 le32_to_cpu(raw_super->log_sectorsize));
3229 return -EFSCORRUPTED;
3232 segment_count = le32_to_cpu(raw_super->segment_count);
3233 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3234 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3235 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3236 total_sections = le32_to_cpu(raw_super->section_count);
3238 /* blocks_per_seg should be 512, given the above check */
3239 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
3241 if (segment_count > F2FS_MAX_SEGMENT ||
3242 segment_count < F2FS_MIN_SEGMENTS) {
3243 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
3244 return -EFSCORRUPTED;
3247 if (total_sections > segment_count_main || total_sections < 1 ||
3248 segs_per_sec > segment_count || !segs_per_sec) {
3249 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
3250 segment_count, total_sections, segs_per_sec);
3251 return -EFSCORRUPTED;
3254 if (segment_count_main != total_sections * segs_per_sec) {
3255 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)",
3256 segment_count_main, total_sections, segs_per_sec);
3257 return -EFSCORRUPTED;
3260 if ((segment_count / segs_per_sec) < total_sections) {
3261 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
3262 segment_count, segs_per_sec, total_sections);
3263 return -EFSCORRUPTED;
3266 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
3267 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
3268 segment_count, le64_to_cpu(raw_super->block_count));
3269 return -EFSCORRUPTED;
3272 if (RDEV(0).path[0]) {
3273 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
3276 while (i < MAX_DEVICES && RDEV(i).path[0]) {
3277 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
3280 if (segment_count != dev_seg_count) {
3281 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
3282 segment_count, dev_seg_count);
3283 return -EFSCORRUPTED;
3286 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) &&
3287 !bdev_is_zoned(sbi->sb->s_bdev)) {
3288 f2fs_info(sbi, "Zoned block device path is missing");
3289 return -EFSCORRUPTED;
3293 if (secs_per_zone > total_sections || !secs_per_zone) {
3294 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
3295 secs_per_zone, total_sections);
3296 return -EFSCORRUPTED;
3298 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
3299 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
3300 (le32_to_cpu(raw_super->extension_count) +
3301 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
3302 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
3303 le32_to_cpu(raw_super->extension_count),
3304 raw_super->hot_ext_count,
3305 F2FS_MAX_EXTENSION);
3306 return -EFSCORRUPTED;
3309 if (le32_to_cpu(raw_super->cp_payload) >=
3310 (blocks_per_seg - F2FS_CP_PACKS -
3311 NR_CURSEG_PERSIST_TYPE)) {
3312 f2fs_info(sbi, "Insane cp_payload (%u >= %u)",
3313 le32_to_cpu(raw_super->cp_payload),
3314 blocks_per_seg - F2FS_CP_PACKS -
3315 NR_CURSEG_PERSIST_TYPE);
3316 return -EFSCORRUPTED;
3319 /* check reserved ino info */
3320 if (le32_to_cpu(raw_super->node_ino) != 1 ||
3321 le32_to_cpu(raw_super->meta_ino) != 2 ||
3322 le32_to_cpu(raw_super->root_ino) != 3) {
3323 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
3324 le32_to_cpu(raw_super->node_ino),
3325 le32_to_cpu(raw_super->meta_ino),
3326 le32_to_cpu(raw_super->root_ino));
3327 return -EFSCORRUPTED;
3330 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
3331 if (sanity_check_area_boundary(sbi, bh))
3332 return -EFSCORRUPTED;
3337 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
3339 unsigned int total, fsmeta;
3340 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3341 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3342 unsigned int ovp_segments, reserved_segments;
3343 unsigned int main_segs, blocks_per_seg;
3344 unsigned int sit_segs, nat_segs;
3345 unsigned int sit_bitmap_size, nat_bitmap_size;
3346 unsigned int log_blocks_per_seg;
3347 unsigned int segment_count_main;
3348 unsigned int cp_pack_start_sum, cp_payload;
3349 block_t user_block_count, valid_user_blocks;
3350 block_t avail_node_count, valid_node_count;
3351 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks;
3354 total = le32_to_cpu(raw_super->segment_count);
3355 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
3356 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
3358 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
3360 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
3361 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
3363 if (unlikely(fsmeta >= total))
3366 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
3367 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
3369 if (!f2fs_sb_has_readonly(sbi) &&
3370 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
3371 ovp_segments == 0 || reserved_segments == 0)) {
3372 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
3375 user_block_count = le64_to_cpu(ckpt->user_block_count);
3376 segment_count_main = le32_to_cpu(raw_super->segment_count_main) +
3377 (f2fs_sb_has_readonly(sbi) ? 1 : 0);
3378 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3379 if (!user_block_count || user_block_count >=
3380 segment_count_main << log_blocks_per_seg) {
3381 f2fs_err(sbi, "Wrong user_block_count: %u",
3386 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
3387 if (valid_user_blocks > user_block_count) {
3388 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
3389 valid_user_blocks, user_block_count);
3393 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
3394 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
3395 if (valid_node_count > avail_node_count) {
3396 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
3397 valid_node_count, avail_node_count);
3401 main_segs = le32_to_cpu(raw_super->segment_count_main);
3402 blocks_per_seg = sbi->blocks_per_seg;
3404 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3405 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
3406 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
3409 if (f2fs_sb_has_readonly(sbi))
3412 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
3413 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3414 le32_to_cpu(ckpt->cur_node_segno[j])) {
3415 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
3417 le32_to_cpu(ckpt->cur_node_segno[i]));
3423 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
3424 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
3425 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
3428 if (f2fs_sb_has_readonly(sbi))
3431 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
3432 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
3433 le32_to_cpu(ckpt->cur_data_segno[j])) {
3434 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
3436 le32_to_cpu(ckpt->cur_data_segno[i]));
3441 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3442 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
3443 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3444 le32_to_cpu(ckpt->cur_data_segno[j])) {
3445 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
3447 le32_to_cpu(ckpt->cur_node_segno[i]));
3453 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
3454 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
3456 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
3457 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
3458 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
3459 sit_bitmap_size, nat_bitmap_size);
3463 cp_pack_start_sum = __start_sum_addr(sbi);
3464 cp_payload = __cp_payload(sbi);
3465 if (cp_pack_start_sum < cp_payload + 1 ||
3466 cp_pack_start_sum > blocks_per_seg - 1 -
3467 NR_CURSEG_PERSIST_TYPE) {
3468 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
3473 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
3474 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
3475 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
3476 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
3477 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
3478 le32_to_cpu(ckpt->checksum_offset));
3482 nat_blocks = nat_segs << log_blocks_per_seg;
3483 nat_bits_bytes = nat_blocks / BITS_PER_BYTE;
3484 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
3485 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) &&
3486 (cp_payload + F2FS_CP_PACKS +
3487 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) {
3488 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)",
3489 cp_payload, nat_bits_blocks);
3490 return -EFSCORRUPTED;
3493 if (unlikely(f2fs_cp_error(sbi))) {
3494 f2fs_err(sbi, "A bug case: need to run fsck");
3500 static void init_sb_info(struct f2fs_sb_info *sbi)
3502 struct f2fs_super_block *raw_super = sbi->raw_super;
3505 sbi->log_sectors_per_block =
3506 le32_to_cpu(raw_super->log_sectors_per_block);
3507 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
3508 sbi->blocksize = 1 << sbi->log_blocksize;
3509 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3510 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
3511 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3512 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3513 sbi->total_sections = le32_to_cpu(raw_super->section_count);
3514 sbi->total_node_count =
3515 (le32_to_cpu(raw_super->segment_count_nat) / 2)
3516 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
3517 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino);
3518 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino);
3519 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino);
3520 sbi->cur_victim_sec = NULL_SECNO;
3521 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
3522 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
3523 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
3524 sbi->migration_granularity = sbi->segs_per_sec;
3525 sbi->seq_file_ra_mul = MIN_RA_MUL;
3527 sbi->dir_level = DEF_DIR_LEVEL;
3528 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
3529 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
3530 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
3531 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
3532 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
3533 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
3534 DEF_UMOUNT_DISCARD_TIMEOUT;
3535 clear_sbi_flag(sbi, SBI_NEED_FSCK);
3537 for (i = 0; i < NR_COUNT_TYPE; i++)
3538 atomic_set(&sbi->nr_pages[i], 0);
3540 for (i = 0; i < META; i++)
3541 atomic_set(&sbi->wb_sync_req[i], 0);
3543 INIT_LIST_HEAD(&sbi->s_list);
3544 mutex_init(&sbi->umount_mutex);
3545 init_rwsem(&sbi->io_order_lock);
3546 spin_lock_init(&sbi->cp_lock);
3548 sbi->dirty_device = 0;
3549 spin_lock_init(&sbi->dev_lock);
3551 init_rwsem(&sbi->sb_lock);
3552 init_rwsem(&sbi->pin_sem);
3555 static int init_percpu_info(struct f2fs_sb_info *sbi)
3559 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
3563 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
3566 percpu_counter_destroy(&sbi->alloc_valid_block_count);
3571 #ifdef CONFIG_BLK_DEV_ZONED
3573 struct f2fs_report_zones_args {
3574 struct f2fs_dev_info *dev;
3575 bool zone_cap_mismatch;
3578 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
3581 struct f2fs_report_zones_args *rz_args = data;
3583 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
3586 set_bit(idx, rz_args->dev->blkz_seq);
3587 rz_args->dev->zone_capacity_blocks[idx] = zone->capacity >>
3588 F2FS_LOG_SECTORS_PER_BLOCK;
3589 if (zone->len != zone->capacity && !rz_args->zone_cap_mismatch)
3590 rz_args->zone_cap_mismatch = true;
3595 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
3597 struct block_device *bdev = FDEV(devi).bdev;
3598 sector_t nr_sectors = bdev_nr_sectors(bdev);
3599 struct f2fs_report_zones_args rep_zone_arg;
3602 if (!f2fs_sb_has_blkzoned(sbi))
3605 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
3606 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3608 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3609 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3610 __ilog2_u32(sbi->blocks_per_blkz))
3612 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3613 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3614 sbi->log_blocks_per_blkz;
3615 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3616 FDEV(devi).nr_blkz++;
3618 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
3619 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3620 * sizeof(unsigned long),
3622 if (!FDEV(devi).blkz_seq)
3625 /* Get block zones type and zone-capacity */
3626 FDEV(devi).zone_capacity_blocks = f2fs_kzalloc(sbi,
3627 FDEV(devi).nr_blkz * sizeof(block_t),
3629 if (!FDEV(devi).zone_capacity_blocks)
3632 rep_zone_arg.dev = &FDEV(devi);
3633 rep_zone_arg.zone_cap_mismatch = false;
3635 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3640 if (!rep_zone_arg.zone_cap_mismatch) {
3641 kfree(FDEV(devi).zone_capacity_blocks);
3642 FDEV(devi).zone_capacity_blocks = NULL;
3650 * Read f2fs raw super block.
3651 * Because we have two copies of super block, so read both of them
3652 * to get the first valid one. If any one of them is broken, we pass
3653 * them recovery flag back to the caller.
3655 static int read_raw_super_block(struct f2fs_sb_info *sbi,
3656 struct f2fs_super_block **raw_super,
3657 int *valid_super_block, int *recovery)
3659 struct super_block *sb = sbi->sb;
3661 struct buffer_head *bh;
3662 struct f2fs_super_block *super;
3665 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3669 for (block = 0; block < 2; block++) {
3670 bh = sb_bread(sb, block);
3672 f2fs_err(sbi, "Unable to read %dth superblock",
3679 /* sanity checking of raw super */
3680 err = sanity_check_raw_super(sbi, bh);
3682 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3690 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3692 *valid_super_block = block;
3698 /* No valid superblock */
3707 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
3709 struct buffer_head *bh;
3713 if ((recover && f2fs_readonly(sbi->sb)) ||
3714 bdev_read_only(sbi->sb->s_bdev)) {
3715 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3719 /* we should update superblock crc here */
3720 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
3721 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3722 offsetof(struct f2fs_super_block, crc));
3723 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3726 /* write back-up superblock first */
3727 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
3730 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3733 /* if we are in recovery path, skip writing valid superblock */
3737 /* write current valid superblock */
3738 bh = sb_bread(sbi->sb, sbi->valid_super_block);
3741 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3746 static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3748 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3749 unsigned int max_devices = MAX_DEVICES;
3752 /* Initialize single device information */
3753 if (!RDEV(0).path[0]) {
3754 if (!bdev_is_zoned(sbi->sb->s_bdev))
3760 * Initialize multiple devices information, or single
3761 * zoned block device information.
3763 sbi->devs = f2fs_kzalloc(sbi,
3764 array_size(max_devices,
3765 sizeof(struct f2fs_dev_info)),
3770 for (i = 0; i < max_devices; i++) {
3772 if (i > 0 && !RDEV(i).path[0])
3775 if (max_devices == 1) {
3776 /* Single zoned block device mount */
3778 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3779 sbi->sb->s_mode, sbi->sb->s_type);
3781 /* Multi-device mount */
3782 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3783 FDEV(i).total_segments =
3784 le32_to_cpu(RDEV(i).total_segments);
3786 FDEV(i).start_blk = 0;
3787 FDEV(i).end_blk = FDEV(i).start_blk +
3788 (FDEV(i).total_segments <<
3789 sbi->log_blocks_per_seg) - 1 +
3790 le32_to_cpu(raw_super->segment0_blkaddr);
3792 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3793 FDEV(i).end_blk = FDEV(i).start_blk +
3794 (FDEV(i).total_segments <<
3795 sbi->log_blocks_per_seg) - 1;
3797 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3798 sbi->sb->s_mode, sbi->sb->s_type);
3800 if (IS_ERR(FDEV(i).bdev))
3801 return PTR_ERR(FDEV(i).bdev);
3803 /* to release errored devices */
3804 sbi->s_ndevs = i + 1;
3806 #ifdef CONFIG_BLK_DEV_ZONED
3807 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
3808 !f2fs_sb_has_blkzoned(sbi)) {
3809 f2fs_err(sbi, "Zoned block device feature not enabled");
3812 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3813 if (init_blkz_info(sbi, i)) {
3814 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3817 if (max_devices == 1)
3819 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3821 FDEV(i).total_segments,
3822 FDEV(i).start_blk, FDEV(i).end_blk,
3823 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3824 "Host-aware" : "Host-managed");
3828 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3830 FDEV(i).total_segments,
3831 FDEV(i).start_blk, FDEV(i).end_blk);
3834 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3838 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3840 #ifdef CONFIG_UNICODE
3841 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) {
3842 const struct f2fs_sb_encodings *encoding_info;
3843 struct unicode_map *encoding;
3844 __u16 encoding_flags;
3846 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3849 "Encoding requested by superblock is unknown");
3853 encoding = utf8_load(encoding_info->version);
3854 if (IS_ERR(encoding)) {
3856 "can't mount with superblock charset: %s-%s "
3857 "not supported by the kernel. flags: 0x%x.",
3858 encoding_info->name, encoding_info->version,
3860 return PTR_ERR(encoding);
3862 f2fs_info(sbi, "Using encoding defined by superblock: "
3863 "%s-%s with flags 0x%hx", encoding_info->name,
3864 encoding_info->version?:"\b", encoding_flags);
3866 sbi->sb->s_encoding = encoding;
3867 sbi->sb->s_encoding_flags = encoding_flags;
3870 if (f2fs_sb_has_casefold(sbi)) {
3871 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3878 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3880 struct f2fs_sm_info *sm_i = SM_I(sbi);
3882 /* adjust parameters according to the volume size */
3883 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
3884 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
3885 if (f2fs_block_unit_discard(sbi))
3886 sm_i->dcc_info->discard_granularity = 1;
3887 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3890 sbi->readdir_ra = 1;
3893 static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3895 struct f2fs_sb_info *sbi;
3896 struct f2fs_super_block *raw_super;
3899 bool skip_recovery = false, need_fsck = false;
3900 char *options = NULL;
3901 int recovery, i, valid_super_block;
3902 struct curseg_info *seg_i;
3908 valid_super_block = -1;
3911 /* allocate memory for f2fs-specific super block info */
3912 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3918 /* Load the checksum driver */
3919 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3920 if (IS_ERR(sbi->s_chksum_driver)) {
3921 f2fs_err(sbi, "Cannot load crc32 driver.");
3922 err = PTR_ERR(sbi->s_chksum_driver);
3923 sbi->s_chksum_driver = NULL;
3927 /* set a block size */
3928 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
3929 f2fs_err(sbi, "unable to set blocksize");
3933 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
3938 sb->s_fs_info = sbi;
3939 sbi->raw_super = raw_super;
3941 /* precompute checksum seed for metadata */
3942 if (f2fs_sb_has_inode_chksum(sbi))
3943 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3944 sizeof(raw_super->uuid));
3946 default_options(sbi);
3947 /* parse mount options */
3948 options = kstrdup((const char *)data, GFP_KERNEL);
3949 if (data && !options) {
3954 err = parse_options(sb, options, false);
3958 sb->s_maxbytes = max_file_blocks(NULL) <<
3959 le32_to_cpu(raw_super->log_blocksize);
3960 sb->s_max_links = F2FS_LINK_MAX;
3962 err = f2fs_setup_casefold(sbi);
3967 sb->dq_op = &f2fs_quota_operations;
3968 sb->s_qcop = &f2fs_quotactl_ops;
3969 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
3971 if (f2fs_sb_has_quota_ino(sbi)) {
3972 for (i = 0; i < MAXQUOTAS; i++) {
3973 if (f2fs_qf_ino(sbi->sb, i))
3974 sbi->nquota_files++;
3979 sb->s_op = &f2fs_sops;
3980 #ifdef CONFIG_FS_ENCRYPTION
3981 sb->s_cop = &f2fs_cryptops;
3983 #ifdef CONFIG_FS_VERITY
3984 sb->s_vop = &f2fs_verityops;
3986 sb->s_xattr = f2fs_xattr_handlers;
3987 sb->s_export_op = &f2fs_export_ops;
3988 sb->s_magic = F2FS_SUPER_MAGIC;
3989 sb->s_time_gran = 1;
3990 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3991 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
3992 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
3993 sb->s_iflags |= SB_I_CGROUPWB;
3995 /* init f2fs-specific super block info */
3996 sbi->valid_super_block = valid_super_block;
3997 init_rwsem(&sbi->gc_lock);
3998 mutex_init(&sbi->writepages);
3999 init_rwsem(&sbi->cp_global_sem);
4000 init_rwsem(&sbi->node_write);
4001 init_rwsem(&sbi->node_change);
4003 /* disallow all the data/node/meta page writes */
4004 set_sbi_flag(sbi, SBI_POR_DOING);
4005 spin_lock_init(&sbi->stat_lock);
4007 for (i = 0; i < NR_PAGE_TYPE; i++) {
4008 int n = (i == META) ? 1 : NR_TEMP_TYPE;
4014 sizeof(struct f2fs_bio_info)),
4016 if (!sbi->write_io[i]) {
4021 for (j = HOT; j < n; j++) {
4022 init_rwsem(&sbi->write_io[i][j].io_rwsem);
4023 sbi->write_io[i][j].sbi = sbi;
4024 sbi->write_io[i][j].bio = NULL;
4025 spin_lock_init(&sbi->write_io[i][j].io_lock);
4026 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
4027 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
4028 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
4032 init_rwsem(&sbi->cp_rwsem);
4033 init_rwsem(&sbi->quota_sem);
4034 init_waitqueue_head(&sbi->cp_wait);
4037 err = f2fs_init_iostat(sbi);
4041 err = init_percpu_info(sbi);
4045 if (F2FS_IO_ALIGNED(sbi)) {
4046 sbi->write_io_dummy =
4047 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
4048 if (!sbi->write_io_dummy) {
4054 /* init per sbi slab cache */
4055 err = f2fs_init_xattr_caches(sbi);
4058 err = f2fs_init_page_array_cache(sbi);
4060 goto free_xattr_cache;
4062 /* get an inode for meta space */
4063 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
4064 if (IS_ERR(sbi->meta_inode)) {
4065 f2fs_err(sbi, "Failed to read F2FS meta data inode");
4066 err = PTR_ERR(sbi->meta_inode);
4067 goto free_page_array_cache;
4070 err = f2fs_get_valid_checkpoint(sbi);
4072 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
4073 goto free_meta_inode;
4076 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
4077 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
4078 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
4079 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4080 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
4083 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
4084 set_sbi_flag(sbi, SBI_NEED_FSCK);
4086 /* Initialize device list */
4087 err = f2fs_scan_devices(sbi);
4089 f2fs_err(sbi, "Failed to find devices");
4093 err = f2fs_init_post_read_wq(sbi);
4095 f2fs_err(sbi, "Failed to initialize post read workqueue");
4099 sbi->total_valid_node_count =
4100 le32_to_cpu(sbi->ckpt->valid_node_count);
4101 percpu_counter_set(&sbi->total_valid_inode_count,
4102 le32_to_cpu(sbi->ckpt->valid_inode_count));
4103 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
4104 sbi->total_valid_block_count =
4105 le64_to_cpu(sbi->ckpt->valid_block_count);
4106 sbi->last_valid_block_count = sbi->total_valid_block_count;
4107 sbi->reserved_blocks = 0;
4108 sbi->current_reserved_blocks = 0;
4109 limit_reserve_root(sbi);
4110 adjust_unusable_cap_perc(sbi);
4112 for (i = 0; i < NR_INODE_TYPE; i++) {
4113 INIT_LIST_HEAD(&sbi->inode_list[i]);
4114 spin_lock_init(&sbi->inode_lock[i]);
4116 mutex_init(&sbi->flush_lock);
4118 f2fs_init_extent_cache_info(sbi);
4120 f2fs_init_ino_entry_info(sbi);
4122 f2fs_init_fsync_node_info(sbi);
4124 /* setup checkpoint request control and start checkpoint issue thread */
4125 f2fs_init_ckpt_req_control(sbi);
4126 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
4127 test_opt(sbi, MERGE_CHECKPOINT)) {
4128 err = f2fs_start_ckpt_thread(sbi);
4131 "Failed to start F2FS issue_checkpoint_thread (%d)",
4133 goto stop_ckpt_thread;
4137 /* setup f2fs internal modules */
4138 err = f2fs_build_segment_manager(sbi);
4140 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
4144 err = f2fs_build_node_manager(sbi);
4146 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
4151 /* For write statistics */
4152 sbi->sectors_written_start = f2fs_get_sectors_written(sbi);
4154 /* Read accumulated write IO statistics if exists */
4155 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
4156 if (__exist_node_summaries(sbi))
4157 sbi->kbytes_written =
4158 le64_to_cpu(seg_i->journal->info.kbytes_written);
4160 f2fs_build_gc_manager(sbi);
4162 err = f2fs_build_stats(sbi);
4166 /* get an inode for node space */
4167 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
4168 if (IS_ERR(sbi->node_inode)) {
4169 f2fs_err(sbi, "Failed to read node inode");
4170 err = PTR_ERR(sbi->node_inode);
4174 /* read root inode and dentry */
4175 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
4177 f2fs_err(sbi, "Failed to read root inode");
4178 err = PTR_ERR(root);
4179 goto free_node_inode;
4181 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
4182 !root->i_size || !root->i_nlink) {
4185 goto free_node_inode;
4188 sb->s_root = d_make_root(root); /* allocate root dentry */
4191 goto free_node_inode;
4194 err = f2fs_init_compress_inode(sbi);
4196 goto free_root_inode;
4198 err = f2fs_register_sysfs(sbi);
4200 goto free_compress_inode;
4203 /* Enable quota usage during mount */
4204 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
4205 err = f2fs_enable_quotas(sb);
4207 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
4210 /* if there are any orphan inodes, free them */
4211 err = f2fs_recover_orphan_inodes(sbi);
4215 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
4216 goto reset_checkpoint;
4218 /* recover fsynced data */
4219 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
4220 !test_opt(sbi, NORECOVERY)) {
4222 * mount should be failed, when device has readonly mode, and
4223 * previous checkpoint was not done by clean system shutdown.
4225 if (f2fs_hw_is_readonly(sbi)) {
4226 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4227 err = f2fs_recover_fsync_data(sbi, true);
4230 f2fs_err(sbi, "Need to recover fsync data, but "
4231 "write access unavailable, please try "
4232 "mount w/ disable_roll_forward or norecovery");
4237 f2fs_info(sbi, "write access unavailable, skipping recovery");
4238 goto reset_checkpoint;
4242 set_sbi_flag(sbi, SBI_NEED_FSCK);
4245 goto reset_checkpoint;
4247 err = f2fs_recover_fsync_data(sbi, false);
4250 skip_recovery = true;
4252 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
4257 err = f2fs_recover_fsync_data(sbi, true);
4259 if (!f2fs_readonly(sb) && err > 0) {
4261 f2fs_err(sbi, "Need to recover fsync data");
4267 * If the f2fs is not readonly and fsync data recovery succeeds,
4268 * check zoned block devices' write pointer consistency.
4270 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
4271 err = f2fs_check_write_pointer(sbi);
4277 f2fs_init_inmem_curseg(sbi);
4279 /* f2fs_recover_fsync_data() cleared this already */
4280 clear_sbi_flag(sbi, SBI_POR_DOING);
4282 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
4283 err = f2fs_disable_checkpoint(sbi);
4285 goto sync_free_meta;
4286 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
4287 f2fs_enable_checkpoint(sbi);
4291 * If filesystem is not mounted as read-only then
4292 * do start the gc_thread.
4294 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF ||
4295 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) {
4296 /* After POR, we can run background GC thread.*/
4297 err = f2fs_start_gc_thread(sbi);
4299 goto sync_free_meta;
4303 /* recover broken superblock */
4305 err = f2fs_commit_super(sbi, true);
4306 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
4307 sbi->valid_super_block ? 1 : 2, err);
4310 f2fs_join_shrinker(sbi);
4312 f2fs_tuning_parameters(sbi);
4314 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
4315 cur_cp_version(F2FS_CKPT(sbi)));
4316 f2fs_update_time(sbi, CP_TIME);
4317 f2fs_update_time(sbi, REQ_TIME);
4318 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4322 /* safe to flush all the data */
4323 sync_filesystem(sbi->sb);
4328 f2fs_truncate_quota_inode_pages(sb);
4329 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
4330 f2fs_quota_off_umount(sbi->sb);
4333 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4334 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4335 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
4336 * falls into an infinite loop in f2fs_sync_meta_pages().
4338 truncate_inode_pages_final(META_MAPPING(sbi));
4339 /* evict some inodes being cached by GC */
4341 f2fs_unregister_sysfs(sbi);
4342 free_compress_inode:
4343 f2fs_destroy_compress_inode(sbi);
4348 f2fs_release_ino_entry(sbi, true);
4349 truncate_inode_pages_final(NODE_MAPPING(sbi));
4350 iput(sbi->node_inode);
4351 sbi->node_inode = NULL;
4353 f2fs_destroy_stats(sbi);
4355 f2fs_destroy_node_manager(sbi);
4357 f2fs_destroy_segment_manager(sbi);
4358 f2fs_destroy_post_read_wq(sbi);
4360 f2fs_stop_ckpt_thread(sbi);
4362 destroy_device_list(sbi);
4365 make_bad_inode(sbi->meta_inode);
4366 iput(sbi->meta_inode);
4367 sbi->meta_inode = NULL;
4368 free_page_array_cache:
4369 f2fs_destroy_page_array_cache(sbi);
4371 f2fs_destroy_xattr_caches(sbi);
4373 mempool_destroy(sbi->write_io_dummy);
4375 destroy_percpu_info(sbi);
4377 f2fs_destroy_iostat(sbi);
4379 for (i = 0; i < NR_PAGE_TYPE; i++)
4380 kvfree(sbi->write_io[i]);
4382 #ifdef CONFIG_UNICODE
4383 utf8_unload(sb->s_encoding);
4384 sb->s_encoding = NULL;
4388 for (i = 0; i < MAXQUOTAS; i++)
4389 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4391 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
4396 if (sbi->s_chksum_driver)
4397 crypto_free_shash(sbi->s_chksum_driver);
4400 /* give only one another chance */
4401 if (retry_cnt > 0 && skip_recovery) {
4403 shrink_dcache_sb(sb);
4409 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
4410 const char *dev_name, void *data)
4412 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
4415 static void kill_f2fs_super(struct super_block *sb)
4418 struct f2fs_sb_info *sbi = F2FS_SB(sb);
4420 set_sbi_flag(sbi, SBI_IS_CLOSE);
4421 f2fs_stop_gc_thread(sbi);
4422 f2fs_stop_discard_thread(sbi);
4424 #ifdef CONFIG_F2FS_FS_COMPRESSION
4426 * latter evict_inode() can bypass checking and invalidating
4427 * compress inode cache.
4429 if (test_opt(sbi, COMPRESS_CACHE))
4430 truncate_inode_pages_final(COMPRESS_MAPPING(sbi));
4433 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
4434 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4435 struct cp_control cpc = {
4436 .reason = CP_UMOUNT,
4438 f2fs_write_checkpoint(sbi, &cpc);
4441 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
4442 sb->s_flags &= ~SB_RDONLY;
4444 kill_block_super(sb);
4447 static struct file_system_type f2fs_fs_type = {
4448 .owner = THIS_MODULE,
4450 .mount = f2fs_mount,
4451 .kill_sb = kill_f2fs_super,
4452 .fs_flags = FS_REQUIRES_DEV,
4454 MODULE_ALIAS_FS("f2fs");
4456 static int __init init_inodecache(void)
4458 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
4459 sizeof(struct f2fs_inode_info), 0,
4460 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
4461 if (!f2fs_inode_cachep)
4466 static void destroy_inodecache(void)
4469 * Make sure all delayed rcu free inodes are flushed before we
4473 kmem_cache_destroy(f2fs_inode_cachep);
4476 static int __init init_f2fs_fs(void)
4480 if (PAGE_SIZE != F2FS_BLKSIZE) {
4481 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
4482 PAGE_SIZE, F2FS_BLKSIZE);
4486 err = init_inodecache();
4489 err = f2fs_create_node_manager_caches();
4491 goto free_inodecache;
4492 err = f2fs_create_segment_manager_caches();
4494 goto free_node_manager_caches;
4495 err = f2fs_create_checkpoint_caches();
4497 goto free_segment_manager_caches;
4498 err = f2fs_create_recovery_cache();
4500 goto free_checkpoint_caches;
4501 err = f2fs_create_extent_cache();
4503 goto free_recovery_cache;
4504 err = f2fs_create_garbage_collection_cache();
4506 goto free_extent_cache;
4507 err = f2fs_init_sysfs();
4509 goto free_garbage_collection_cache;
4510 err = register_shrinker(&f2fs_shrinker_info);
4513 err = register_filesystem(&f2fs_fs_type);
4516 f2fs_create_root_stats();
4517 err = f2fs_init_post_read_processing();
4519 goto free_root_stats;
4520 err = f2fs_init_iostat_processing();
4522 goto free_post_read;
4523 err = f2fs_init_bio_entry_cache();
4526 err = f2fs_init_bioset();
4528 goto free_bio_enrty_cache;
4529 err = f2fs_init_compress_mempool();
4532 err = f2fs_init_compress_cache();
4534 goto free_compress_mempool;
4535 err = f2fs_create_casefold_cache();
4537 goto free_compress_cache;
4539 free_compress_cache:
4540 f2fs_destroy_compress_cache();
4541 free_compress_mempool:
4542 f2fs_destroy_compress_mempool();
4544 f2fs_destroy_bioset();
4545 free_bio_enrty_cache:
4546 f2fs_destroy_bio_entry_cache();
4548 f2fs_destroy_iostat_processing();
4550 f2fs_destroy_post_read_processing();
4552 f2fs_destroy_root_stats();
4553 unregister_filesystem(&f2fs_fs_type);
4555 unregister_shrinker(&f2fs_shrinker_info);
4558 free_garbage_collection_cache:
4559 f2fs_destroy_garbage_collection_cache();
4561 f2fs_destroy_extent_cache();
4562 free_recovery_cache:
4563 f2fs_destroy_recovery_cache();
4564 free_checkpoint_caches:
4565 f2fs_destroy_checkpoint_caches();
4566 free_segment_manager_caches:
4567 f2fs_destroy_segment_manager_caches();
4568 free_node_manager_caches:
4569 f2fs_destroy_node_manager_caches();
4571 destroy_inodecache();
4576 static void __exit exit_f2fs_fs(void)
4578 f2fs_destroy_casefold_cache();
4579 f2fs_destroy_compress_cache();
4580 f2fs_destroy_compress_mempool();
4581 f2fs_destroy_bioset();
4582 f2fs_destroy_bio_entry_cache();
4583 f2fs_destroy_iostat_processing();
4584 f2fs_destroy_post_read_processing();
4585 f2fs_destroy_root_stats();
4586 unregister_filesystem(&f2fs_fs_type);
4587 unregister_shrinker(&f2fs_shrinker_info);
4589 f2fs_destroy_garbage_collection_cache();
4590 f2fs_destroy_extent_cache();
4591 f2fs_destroy_recovery_cache();
4592 f2fs_destroy_checkpoint_caches();
4593 f2fs_destroy_segment_manager_caches();
4594 f2fs_destroy_node_manager_caches();
4595 destroy_inodecache();
4598 module_init(init_f2fs_fs)
4599 module_exit(exit_f2fs_fs)
4601 MODULE_AUTHOR("Samsung Electronics's Praesto Team");
4602 MODULE_DESCRIPTION("Flash Friendly File System");
4603 MODULE_LICENSE("GPL");
4604 MODULE_SOFTDEP("pre: crc32");