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>
35 #define CREATE_TRACE_POINTS
36 #include <trace/events/f2fs.h>
38 static struct kmem_cache *f2fs_inode_cachep;
40 #ifdef CONFIG_F2FS_FAULT_INJECTION
42 const char *f2fs_fault_name[FAULT_MAX] = {
43 [FAULT_KMALLOC] = "kmalloc",
44 [FAULT_KVMALLOC] = "kvmalloc",
45 [FAULT_PAGE_ALLOC] = "page alloc",
46 [FAULT_PAGE_GET] = "page get",
47 [FAULT_ALLOC_BIO] = "alloc bio",
48 [FAULT_ALLOC_NID] = "alloc nid",
49 [FAULT_ORPHAN] = "orphan",
50 [FAULT_BLOCK] = "no more block",
51 [FAULT_DIR_DEPTH] = "too big dir depth",
52 [FAULT_EVICT_INODE] = "evict_inode fail",
53 [FAULT_TRUNCATE] = "truncate fail",
54 [FAULT_READ_IO] = "read IO error",
55 [FAULT_CHECKPOINT] = "checkpoint error",
56 [FAULT_DISCARD] = "discard error",
57 [FAULT_WRITE_IO] = "write IO error",
60 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
63 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
66 atomic_set(&ffi->inject_ops, 0);
67 ffi->inject_rate = rate;
71 ffi->inject_type = type;
74 memset(ffi, 0, sizeof(struct f2fs_fault_info));
78 /* f2fs-wide shrinker description */
79 static struct shrinker f2fs_shrinker_info = {
80 .scan_objects = f2fs_shrink_scan,
81 .count_objects = f2fs_shrink_count,
82 .seeks = DEFAULT_SEEKS,
87 Opt_disable_roll_forward,
98 Opt_disable_ext_identify,
101 Opt_inline_xattr_size,
139 Opt_test_dummy_encryption,
140 Opt_checkpoint_disable,
141 Opt_checkpoint_disable_cap,
142 Opt_checkpoint_disable_cap_perc,
143 Opt_checkpoint_enable,
147 static match_table_t f2fs_tokens = {
148 {Opt_gc_background, "background_gc=%s"},
149 {Opt_disable_roll_forward, "disable_roll_forward"},
150 {Opt_norecovery, "norecovery"},
151 {Opt_discard, "discard"},
152 {Opt_nodiscard, "nodiscard"},
153 {Opt_noheap, "no_heap"},
155 {Opt_user_xattr, "user_xattr"},
156 {Opt_nouser_xattr, "nouser_xattr"},
158 {Opt_noacl, "noacl"},
159 {Opt_active_logs, "active_logs=%u"},
160 {Opt_disable_ext_identify, "disable_ext_identify"},
161 {Opt_inline_xattr, "inline_xattr"},
162 {Opt_noinline_xattr, "noinline_xattr"},
163 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
164 {Opt_inline_data, "inline_data"},
165 {Opt_inline_dentry, "inline_dentry"},
166 {Opt_noinline_dentry, "noinline_dentry"},
167 {Opt_flush_merge, "flush_merge"},
168 {Opt_noflush_merge, "noflush_merge"},
169 {Opt_nobarrier, "nobarrier"},
170 {Opt_fastboot, "fastboot"},
171 {Opt_extent_cache, "extent_cache"},
172 {Opt_noextent_cache, "noextent_cache"},
173 {Opt_noinline_data, "noinline_data"},
174 {Opt_data_flush, "data_flush"},
175 {Opt_reserve_root, "reserve_root=%u"},
176 {Opt_resgid, "resgid=%u"},
177 {Opt_resuid, "resuid=%u"},
178 {Opt_mode, "mode=%s"},
179 {Opt_io_size_bits, "io_bits=%u"},
180 {Opt_fault_injection, "fault_injection=%u"},
181 {Opt_fault_type, "fault_type=%u"},
182 {Opt_lazytime, "lazytime"},
183 {Opt_nolazytime, "nolazytime"},
184 {Opt_quota, "quota"},
185 {Opt_noquota, "noquota"},
186 {Opt_usrquota, "usrquota"},
187 {Opt_grpquota, "grpquota"},
188 {Opt_prjquota, "prjquota"},
189 {Opt_usrjquota, "usrjquota=%s"},
190 {Opt_grpjquota, "grpjquota=%s"},
191 {Opt_prjjquota, "prjjquota=%s"},
192 {Opt_offusrjquota, "usrjquota="},
193 {Opt_offgrpjquota, "grpjquota="},
194 {Opt_offprjjquota, "prjjquota="},
195 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
196 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
197 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
198 {Opt_whint, "whint_mode=%s"},
199 {Opt_alloc, "alloc_mode=%s"},
200 {Opt_fsync, "fsync_mode=%s"},
201 {Opt_test_dummy_encryption, "test_dummy_encryption"},
202 {Opt_checkpoint_disable, "checkpoint=disable"},
203 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
204 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
205 {Opt_checkpoint_enable, "checkpoint=enable"},
209 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
211 struct va_format vaf;
217 level = printk_get_level(fmt);
218 vaf.fmt = printk_skip_level(fmt);
220 printk("%c%cF2FS-fs (%s): %pV\n",
221 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
226 #ifdef CONFIG_UNICODE
227 static const struct f2fs_sb_encodings {
231 } f2fs_sb_encoding_map[] = {
232 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
235 static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
236 const struct f2fs_sb_encodings **encoding,
239 __u16 magic = le16_to_cpu(sb->s_encoding);
242 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
243 if (magic == f2fs_sb_encoding_map[i].magic)
246 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
249 *encoding = &f2fs_sb_encoding_map[i];
250 *flags = le16_to_cpu(sb->s_encoding_flags);
256 static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
258 block_t limit = min((sbi->user_block_count << 1) / 1000,
259 sbi->user_block_count - sbi->reserved_blocks);
262 if (test_opt(sbi, RESERVE_ROOT) &&
263 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
264 F2FS_OPTION(sbi).root_reserved_blocks = limit;
265 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
266 F2FS_OPTION(sbi).root_reserved_blocks);
268 if (!test_opt(sbi, RESERVE_ROOT) &&
269 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
270 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
271 !gid_eq(F2FS_OPTION(sbi).s_resgid,
272 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
273 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
274 from_kuid_munged(&init_user_ns,
275 F2FS_OPTION(sbi).s_resuid),
276 from_kgid_munged(&init_user_ns,
277 F2FS_OPTION(sbi).s_resgid));
280 static void init_once(void *foo)
282 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
284 inode_init_once(&fi->vfs_inode);
288 static const char * const quotatypes[] = INITQFNAMES;
289 #define QTYPE2NAME(t) (quotatypes[t])
290 static int f2fs_set_qf_name(struct super_block *sb, int qtype,
293 struct f2fs_sb_info *sbi = F2FS_SB(sb);
297 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
298 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
301 if (f2fs_sb_has_quota_ino(sbi)) {
302 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
306 qname = match_strdup(args);
308 f2fs_err(sbi, "Not enough memory for storing quotafile name");
311 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
312 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
315 f2fs_err(sbi, "%s quota file already specified",
319 if (strchr(qname, '/')) {
320 f2fs_err(sbi, "quotafile must be on filesystem root");
323 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
331 static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
333 struct f2fs_sb_info *sbi = F2FS_SB(sb);
335 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
336 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
339 kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
340 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
344 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
347 * We do the test below only for project quotas. 'usrquota' and
348 * 'grpquota' mount options are allowed even without quota feature
349 * to support legacy quotas in quota files.
351 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
352 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
355 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
356 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
357 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
358 if (test_opt(sbi, USRQUOTA) &&
359 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
360 clear_opt(sbi, USRQUOTA);
362 if (test_opt(sbi, GRPQUOTA) &&
363 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
364 clear_opt(sbi, GRPQUOTA);
366 if (test_opt(sbi, PRJQUOTA) &&
367 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
368 clear_opt(sbi, PRJQUOTA);
370 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
371 test_opt(sbi, PRJQUOTA)) {
372 f2fs_err(sbi, "old and new quota format mixing");
376 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
377 f2fs_err(sbi, "journaled quota format not specified");
382 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
383 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
384 F2FS_OPTION(sbi).s_jquota_fmt = 0;
390 static int parse_options(struct super_block *sb, char *options)
392 struct f2fs_sb_info *sbi = F2FS_SB(sb);
393 substring_t args[MAX_OPT_ARGS];
405 while ((p = strsep(&options, ",")) != NULL) {
410 * Initialize args struct so we know whether arg was
411 * found; some options take optional arguments.
413 args[0].to = args[0].from = NULL;
414 token = match_token(p, f2fs_tokens, args);
417 case Opt_gc_background:
418 name = match_strdup(&args[0]);
422 if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
424 clear_opt(sbi, FORCE_FG_GC);
425 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
426 clear_opt(sbi, BG_GC);
427 clear_opt(sbi, FORCE_FG_GC);
428 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
430 set_opt(sbi, FORCE_FG_GC);
437 case Opt_disable_roll_forward:
438 set_opt(sbi, DISABLE_ROLL_FORWARD);
441 /* this option mounts f2fs with ro */
442 set_opt(sbi, DISABLE_ROLL_FORWARD);
443 if (!f2fs_readonly(sb))
447 set_opt(sbi, DISCARD);
450 if (f2fs_sb_has_blkzoned(sbi)) {
451 f2fs_warn(sbi, "discard is required for zoned block devices");
454 clear_opt(sbi, DISCARD);
457 set_opt(sbi, NOHEAP);
460 clear_opt(sbi, NOHEAP);
462 #ifdef CONFIG_F2FS_FS_XATTR
464 set_opt(sbi, XATTR_USER);
466 case Opt_nouser_xattr:
467 clear_opt(sbi, XATTR_USER);
469 case Opt_inline_xattr:
470 set_opt(sbi, INLINE_XATTR);
472 case Opt_noinline_xattr:
473 clear_opt(sbi, INLINE_XATTR);
475 case Opt_inline_xattr_size:
476 if (args->from && match_int(args, &arg))
478 set_opt(sbi, INLINE_XATTR_SIZE);
479 F2FS_OPTION(sbi).inline_xattr_size = arg;
483 f2fs_info(sbi, "user_xattr options not supported");
485 case Opt_nouser_xattr:
486 f2fs_info(sbi, "nouser_xattr options not supported");
488 case Opt_inline_xattr:
489 f2fs_info(sbi, "inline_xattr options not supported");
491 case Opt_noinline_xattr:
492 f2fs_info(sbi, "noinline_xattr options not supported");
495 #ifdef CONFIG_F2FS_FS_POSIX_ACL
497 set_opt(sbi, POSIX_ACL);
500 clear_opt(sbi, POSIX_ACL);
504 f2fs_info(sbi, "acl options not supported");
507 f2fs_info(sbi, "noacl options not supported");
510 case Opt_active_logs:
511 if (args->from && match_int(args, &arg))
513 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
515 F2FS_OPTION(sbi).active_logs = arg;
517 case Opt_disable_ext_identify:
518 set_opt(sbi, DISABLE_EXT_IDENTIFY);
520 case Opt_inline_data:
521 set_opt(sbi, INLINE_DATA);
523 case Opt_inline_dentry:
524 set_opt(sbi, INLINE_DENTRY);
526 case Opt_noinline_dentry:
527 clear_opt(sbi, INLINE_DENTRY);
529 case Opt_flush_merge:
530 set_opt(sbi, FLUSH_MERGE);
532 case Opt_noflush_merge:
533 clear_opt(sbi, FLUSH_MERGE);
536 set_opt(sbi, NOBARRIER);
539 set_opt(sbi, FASTBOOT);
541 case Opt_extent_cache:
542 set_opt(sbi, EXTENT_CACHE);
544 case Opt_noextent_cache:
545 clear_opt(sbi, EXTENT_CACHE);
547 case Opt_noinline_data:
548 clear_opt(sbi, INLINE_DATA);
551 set_opt(sbi, DATA_FLUSH);
553 case Opt_reserve_root:
554 if (args->from && match_int(args, &arg))
556 if (test_opt(sbi, RESERVE_ROOT)) {
557 f2fs_info(sbi, "Preserve previous reserve_root=%u",
558 F2FS_OPTION(sbi).root_reserved_blocks);
560 F2FS_OPTION(sbi).root_reserved_blocks = arg;
561 set_opt(sbi, RESERVE_ROOT);
565 if (args->from && match_int(args, &arg))
567 uid = make_kuid(current_user_ns(), arg);
568 if (!uid_valid(uid)) {
569 f2fs_err(sbi, "Invalid uid value %d", arg);
572 F2FS_OPTION(sbi).s_resuid = uid;
575 if (args->from && match_int(args, &arg))
577 gid = make_kgid(current_user_ns(), arg);
578 if (!gid_valid(gid)) {
579 f2fs_err(sbi, "Invalid gid value %d", arg);
582 F2FS_OPTION(sbi).s_resgid = gid;
585 name = match_strdup(&args[0]);
589 if (strlen(name) == 8 &&
590 !strncmp(name, "adaptive", 8)) {
591 if (f2fs_sb_has_blkzoned(sbi)) {
592 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
596 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
597 } else if (strlen(name) == 3 &&
598 !strncmp(name, "lfs", 3)) {
599 set_opt_mode(sbi, F2FS_MOUNT_LFS);
606 case Opt_io_size_bits:
607 if (args->from && match_int(args, &arg))
609 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
610 f2fs_warn(sbi, "Not support %d, larger than %d",
611 1 << arg, BIO_MAX_PAGES);
614 F2FS_OPTION(sbi).write_io_size_bits = arg;
616 #ifdef CONFIG_F2FS_FAULT_INJECTION
617 case Opt_fault_injection:
618 if (args->from && match_int(args, &arg))
620 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
621 set_opt(sbi, FAULT_INJECTION);
625 if (args->from && match_int(args, &arg))
627 f2fs_build_fault_attr(sbi, 0, arg);
628 set_opt(sbi, FAULT_INJECTION);
631 case Opt_fault_injection:
632 f2fs_info(sbi, "fault_injection options not supported");
636 f2fs_info(sbi, "fault_type options not supported");
640 sb->s_flags |= SB_LAZYTIME;
643 sb->s_flags &= ~SB_LAZYTIME;
648 set_opt(sbi, USRQUOTA);
651 set_opt(sbi, GRPQUOTA);
654 set_opt(sbi, PRJQUOTA);
657 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
662 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
667 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
671 case Opt_offusrjquota:
672 ret = f2fs_clear_qf_name(sb, USRQUOTA);
676 case Opt_offgrpjquota:
677 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
681 case Opt_offprjjquota:
682 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
686 case Opt_jqfmt_vfsold:
687 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
689 case Opt_jqfmt_vfsv0:
690 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
692 case Opt_jqfmt_vfsv1:
693 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
696 clear_opt(sbi, QUOTA);
697 clear_opt(sbi, USRQUOTA);
698 clear_opt(sbi, GRPQUOTA);
699 clear_opt(sbi, PRJQUOTA);
709 case Opt_offusrjquota:
710 case Opt_offgrpjquota:
711 case Opt_offprjjquota:
712 case Opt_jqfmt_vfsold:
713 case Opt_jqfmt_vfsv0:
714 case Opt_jqfmt_vfsv1:
716 f2fs_info(sbi, "quota operations not supported");
720 name = match_strdup(&args[0]);
723 if (strlen(name) == 10 &&
724 !strncmp(name, "user-based", 10)) {
725 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
726 } else if (strlen(name) == 3 &&
727 !strncmp(name, "off", 3)) {
728 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
729 } else if (strlen(name) == 8 &&
730 !strncmp(name, "fs-based", 8)) {
731 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
739 name = match_strdup(&args[0]);
743 if (strlen(name) == 7 &&
744 !strncmp(name, "default", 7)) {
745 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
746 } else if (strlen(name) == 5 &&
747 !strncmp(name, "reuse", 5)) {
748 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
756 name = match_strdup(&args[0]);
759 if (strlen(name) == 5 &&
760 !strncmp(name, "posix", 5)) {
761 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
762 } else if (strlen(name) == 6 &&
763 !strncmp(name, "strict", 6)) {
764 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
765 } else if (strlen(name) == 9 &&
766 !strncmp(name, "nobarrier", 9)) {
767 F2FS_OPTION(sbi).fsync_mode =
768 FSYNC_MODE_NOBARRIER;
775 case Opt_test_dummy_encryption:
776 #ifdef CONFIG_FS_ENCRYPTION
777 if (!f2fs_sb_has_encrypt(sbi)) {
778 f2fs_err(sbi, "Encrypt feature is off");
782 F2FS_OPTION(sbi).test_dummy_encryption = true;
783 f2fs_info(sbi, "Test dummy encryption mode enabled");
785 f2fs_info(sbi, "Test dummy encryption mount option ignored");
788 case Opt_checkpoint_disable_cap_perc:
789 if (args->from && match_int(args, &arg))
791 if (arg < 0 || arg > 100)
794 F2FS_OPTION(sbi).unusable_cap =
795 sbi->user_block_count;
797 F2FS_OPTION(sbi).unusable_cap =
798 (sbi->user_block_count / 100) * arg;
799 set_opt(sbi, DISABLE_CHECKPOINT);
801 case Opt_checkpoint_disable_cap:
802 if (args->from && match_int(args, &arg))
804 F2FS_OPTION(sbi).unusable_cap = arg;
805 set_opt(sbi, DISABLE_CHECKPOINT);
807 case Opt_checkpoint_disable:
808 set_opt(sbi, DISABLE_CHECKPOINT);
810 case Opt_checkpoint_enable:
811 clear_opt(sbi, DISABLE_CHECKPOINT);
814 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
820 if (f2fs_check_quota_options(sbi))
823 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
824 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
827 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
828 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
832 #ifndef CONFIG_UNICODE
833 if (f2fs_sb_has_casefold(sbi)) {
835 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
840 if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
841 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
842 F2FS_IO_SIZE_KB(sbi));
846 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
847 int min_size, max_size;
849 if (!f2fs_sb_has_extra_attr(sbi) ||
850 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
851 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
854 if (!test_opt(sbi, INLINE_XATTR)) {
855 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
859 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
860 max_size = MAX_INLINE_XATTR_SIZE;
862 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
863 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
864 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
870 if (test_opt(sbi, DISABLE_CHECKPOINT) && test_opt(sbi, LFS)) {
871 f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
875 /* Not pass down write hints if the number of active logs is lesser
876 * than NR_CURSEG_TYPE.
878 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
879 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
883 static struct inode *f2fs_alloc_inode(struct super_block *sb)
885 struct f2fs_inode_info *fi;
887 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
891 init_once((void *) fi);
893 /* Initialize f2fs-specific inode info */
894 atomic_set(&fi->dirty_pages, 0);
895 init_rwsem(&fi->i_sem);
896 INIT_LIST_HEAD(&fi->dirty_list);
897 INIT_LIST_HEAD(&fi->gdirty_list);
898 INIT_LIST_HEAD(&fi->inmem_ilist);
899 INIT_LIST_HEAD(&fi->inmem_pages);
900 mutex_init(&fi->inmem_lock);
901 init_rwsem(&fi->i_gc_rwsem[READ]);
902 init_rwsem(&fi->i_gc_rwsem[WRITE]);
903 init_rwsem(&fi->i_mmap_sem);
904 init_rwsem(&fi->i_xattr_sem);
906 /* Will be used by directory only */
907 fi->i_dir_level = F2FS_SB(sb)->dir_level;
909 return &fi->vfs_inode;
912 static int f2fs_drop_inode(struct inode *inode)
914 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
918 * during filesystem shutdown, if checkpoint is disabled,
919 * drop useless meta/node dirty pages.
921 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
922 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
923 inode->i_ino == F2FS_META_INO(sbi)) {
924 trace_f2fs_drop_inode(inode, 1);
930 * This is to avoid a deadlock condition like below.
931 * writeback_single_inode(inode)
932 * - f2fs_write_data_page
933 * - f2fs_gc -> iput -> evict
934 * - inode_wait_for_writeback(inode)
936 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
937 if (!inode->i_nlink && !is_bad_inode(inode)) {
938 /* to avoid evict_inode call simultaneously */
939 atomic_inc(&inode->i_count);
940 spin_unlock(&inode->i_lock);
942 /* some remained atomic pages should discarded */
943 if (f2fs_is_atomic_file(inode))
944 f2fs_drop_inmem_pages(inode);
946 /* should remain fi->extent_tree for writepage */
947 f2fs_destroy_extent_node(inode);
949 sb_start_intwrite(inode->i_sb);
950 f2fs_i_size_write(inode, 0);
952 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
953 inode, NULL, 0, DATA);
954 truncate_inode_pages_final(inode->i_mapping);
956 if (F2FS_HAS_BLOCKS(inode))
957 f2fs_truncate(inode);
959 sb_end_intwrite(inode->i_sb);
961 spin_lock(&inode->i_lock);
962 atomic_dec(&inode->i_count);
964 trace_f2fs_drop_inode(inode, 0);
967 ret = generic_drop_inode(inode);
969 ret = fscrypt_drop_inode(inode);
970 trace_f2fs_drop_inode(inode, ret);
974 int f2fs_inode_dirtied(struct inode *inode, bool sync)
976 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
979 spin_lock(&sbi->inode_lock[DIRTY_META]);
980 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
983 set_inode_flag(inode, FI_DIRTY_INODE);
984 stat_inc_dirty_inode(sbi, DIRTY_META);
986 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
987 list_add_tail(&F2FS_I(inode)->gdirty_list,
988 &sbi->inode_list[DIRTY_META]);
989 inc_page_count(sbi, F2FS_DIRTY_IMETA);
991 spin_unlock(&sbi->inode_lock[DIRTY_META]);
995 void f2fs_inode_synced(struct inode *inode)
997 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
999 spin_lock(&sbi->inode_lock[DIRTY_META]);
1000 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1001 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1004 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1005 list_del_init(&F2FS_I(inode)->gdirty_list);
1006 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1008 clear_inode_flag(inode, FI_DIRTY_INODE);
1009 clear_inode_flag(inode, FI_AUTO_RECOVER);
1010 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
1011 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1015 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1017 * We should call set_dirty_inode to write the dirty inode through write_inode.
1019 static void f2fs_dirty_inode(struct inode *inode, int flags)
1021 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1023 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1024 inode->i_ino == F2FS_META_INO(sbi))
1027 if (flags == I_DIRTY_TIME)
1030 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1031 clear_inode_flag(inode, FI_AUTO_RECOVER);
1033 f2fs_inode_dirtied(inode, false);
1036 static void f2fs_free_inode(struct inode *inode)
1038 fscrypt_free_inode(inode);
1039 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1042 static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1044 percpu_counter_destroy(&sbi->alloc_valid_block_count);
1045 percpu_counter_destroy(&sbi->total_valid_inode_count);
1048 static void destroy_device_list(struct f2fs_sb_info *sbi)
1052 for (i = 0; i < sbi->s_ndevs; i++) {
1053 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1054 #ifdef CONFIG_BLK_DEV_ZONED
1055 kvfree(FDEV(i).blkz_seq);
1061 static void f2fs_put_super(struct super_block *sb)
1063 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1067 f2fs_quota_off_umount(sb);
1069 /* prevent remaining shrinker jobs */
1070 mutex_lock(&sbi->umount_mutex);
1073 * We don't need to do checkpoint when superblock is clean.
1074 * But, the previous checkpoint was not done by umount, it needs to do
1075 * clean checkpoint again.
1077 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1078 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
1079 struct cp_control cpc = {
1080 .reason = CP_UMOUNT,
1082 f2fs_write_checkpoint(sbi, &cpc);
1085 /* be sure to wait for any on-going discard commands */
1086 dropped = f2fs_issue_discard_timeout(sbi);
1088 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1089 !sbi->discard_blks && !dropped) {
1090 struct cp_control cpc = {
1091 .reason = CP_UMOUNT | CP_TRIMMED,
1093 f2fs_write_checkpoint(sbi, &cpc);
1097 * normally superblock is clean, so we need to release this.
1098 * In addition, EIO will skip do checkpoint, we need this as well.
1100 f2fs_release_ino_entry(sbi, true);
1102 f2fs_leave_shrinker(sbi);
1103 mutex_unlock(&sbi->umount_mutex);
1105 /* our cp_error case, we can wait for any writeback page */
1106 f2fs_flush_merged_writes(sbi);
1108 f2fs_wait_on_all_pages_writeback(sbi);
1110 f2fs_bug_on(sbi, sbi->fsync_node_num);
1112 iput(sbi->node_inode);
1113 sbi->node_inode = NULL;
1115 iput(sbi->meta_inode);
1116 sbi->meta_inode = NULL;
1119 * iput() can update stat information, if f2fs_write_checkpoint()
1120 * above failed with error.
1122 f2fs_destroy_stats(sbi);
1124 /* destroy f2fs internal modules */
1125 f2fs_destroy_node_manager(sbi);
1126 f2fs_destroy_segment_manager(sbi);
1130 f2fs_unregister_sysfs(sbi);
1132 sb->s_fs_info = NULL;
1133 if (sbi->s_chksum_driver)
1134 crypto_free_shash(sbi->s_chksum_driver);
1135 kvfree(sbi->raw_super);
1137 destroy_device_list(sbi);
1138 mempool_destroy(sbi->write_io_dummy);
1140 for (i = 0; i < MAXQUOTAS; i++)
1141 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
1143 destroy_percpu_info(sbi);
1144 for (i = 0; i < NR_PAGE_TYPE; i++)
1145 kvfree(sbi->write_io[i]);
1146 #ifdef CONFIG_UNICODE
1147 utf8_unload(sbi->s_encoding);
1152 int f2fs_sync_fs(struct super_block *sb, int sync)
1154 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1157 if (unlikely(f2fs_cp_error(sbi)))
1159 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1162 trace_f2fs_sync_fs(sb, sync);
1164 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1168 struct cp_control cpc;
1170 cpc.reason = __get_cp_reason(sbi);
1172 mutex_lock(&sbi->gc_mutex);
1173 err = f2fs_write_checkpoint(sbi, &cpc);
1174 mutex_unlock(&sbi->gc_mutex);
1176 f2fs_trace_ios(NULL, 1);
1181 static int f2fs_freeze(struct super_block *sb)
1183 if (f2fs_readonly(sb))
1186 /* IO error happened before */
1187 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1190 /* must be clean, since sync_filesystem() was already called */
1191 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1196 static int f2fs_unfreeze(struct super_block *sb)
1202 static int f2fs_statfs_project(struct super_block *sb,
1203 kprojid_t projid, struct kstatfs *buf)
1206 struct dquot *dquot;
1210 qid = make_kqid_projid(projid);
1211 dquot = dqget(sb, qid);
1213 return PTR_ERR(dquot);
1214 spin_lock(&dquot->dq_dqb_lock);
1217 if (dquot->dq_dqb.dqb_bsoftlimit)
1218 limit = dquot->dq_dqb.dqb_bsoftlimit;
1219 if (dquot->dq_dqb.dqb_bhardlimit &&
1220 (!limit || dquot->dq_dqb.dqb_bhardlimit < limit))
1221 limit = dquot->dq_dqb.dqb_bhardlimit;
1223 if (limit && buf->f_blocks > limit) {
1224 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1225 buf->f_blocks = limit;
1226 buf->f_bfree = buf->f_bavail =
1227 (buf->f_blocks > curblock) ?
1228 (buf->f_blocks - curblock) : 0;
1232 if (dquot->dq_dqb.dqb_isoftlimit)
1233 limit = dquot->dq_dqb.dqb_isoftlimit;
1234 if (dquot->dq_dqb.dqb_ihardlimit &&
1235 (!limit || dquot->dq_dqb.dqb_ihardlimit < limit))
1236 limit = dquot->dq_dqb.dqb_ihardlimit;
1238 if (limit && buf->f_files > limit) {
1239 buf->f_files = limit;
1241 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1242 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1245 spin_unlock(&dquot->dq_dqb_lock);
1251 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1253 struct super_block *sb = dentry->d_sb;
1254 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1255 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1256 block_t total_count, user_block_count, start_count;
1257 u64 avail_node_count;
1259 total_count = le64_to_cpu(sbi->raw_super->block_count);
1260 user_block_count = sbi->user_block_count;
1261 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
1262 buf->f_type = F2FS_SUPER_MAGIC;
1263 buf->f_bsize = sbi->blocksize;
1265 buf->f_blocks = total_count - start_count;
1266 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
1267 sbi->current_reserved_blocks;
1269 spin_lock(&sbi->stat_lock);
1270 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1273 buf->f_bfree -= sbi->unusable_block_count;
1274 spin_unlock(&sbi->stat_lock);
1276 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1277 buf->f_bavail = buf->f_bfree -
1278 F2FS_OPTION(sbi).root_reserved_blocks;
1282 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
1284 if (avail_node_count > user_block_count) {
1285 buf->f_files = user_block_count;
1286 buf->f_ffree = buf->f_bavail;
1288 buf->f_files = avail_node_count;
1289 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1293 buf->f_namelen = F2FS_NAME_LEN;
1294 buf->f_fsid.val[0] = (u32)id;
1295 buf->f_fsid.val[1] = (u32)(id >> 32);
1298 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1299 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1300 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1306 static inline void f2fs_show_quota_options(struct seq_file *seq,
1307 struct super_block *sb)
1310 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1312 if (F2FS_OPTION(sbi).s_jquota_fmt) {
1315 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
1326 seq_printf(seq, ",jqfmt=%s", fmtname);
1329 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1330 seq_show_option(seq, "usrjquota",
1331 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
1333 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1334 seq_show_option(seq, "grpjquota",
1335 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
1337 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1338 seq_show_option(seq, "prjjquota",
1339 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
1343 static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1345 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1347 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1348 if (test_opt(sbi, FORCE_FG_GC))
1349 seq_printf(seq, ",background_gc=%s", "sync");
1351 seq_printf(seq, ",background_gc=%s", "on");
1353 seq_printf(seq, ",background_gc=%s", "off");
1355 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1356 seq_puts(seq, ",disable_roll_forward");
1357 if (test_opt(sbi, DISCARD))
1358 seq_puts(seq, ",discard");
1360 seq_puts(seq, ",nodiscard");
1361 if (test_opt(sbi, NOHEAP))
1362 seq_puts(seq, ",no_heap");
1364 seq_puts(seq, ",heap");
1365 #ifdef CONFIG_F2FS_FS_XATTR
1366 if (test_opt(sbi, XATTR_USER))
1367 seq_puts(seq, ",user_xattr");
1369 seq_puts(seq, ",nouser_xattr");
1370 if (test_opt(sbi, INLINE_XATTR))
1371 seq_puts(seq, ",inline_xattr");
1373 seq_puts(seq, ",noinline_xattr");
1374 if (test_opt(sbi, INLINE_XATTR_SIZE))
1375 seq_printf(seq, ",inline_xattr_size=%u",
1376 F2FS_OPTION(sbi).inline_xattr_size);
1378 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1379 if (test_opt(sbi, POSIX_ACL))
1380 seq_puts(seq, ",acl");
1382 seq_puts(seq, ",noacl");
1384 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
1385 seq_puts(seq, ",disable_ext_identify");
1386 if (test_opt(sbi, INLINE_DATA))
1387 seq_puts(seq, ",inline_data");
1389 seq_puts(seq, ",noinline_data");
1390 if (test_opt(sbi, INLINE_DENTRY))
1391 seq_puts(seq, ",inline_dentry");
1393 seq_puts(seq, ",noinline_dentry");
1394 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
1395 seq_puts(seq, ",flush_merge");
1396 if (test_opt(sbi, NOBARRIER))
1397 seq_puts(seq, ",nobarrier");
1398 if (test_opt(sbi, FASTBOOT))
1399 seq_puts(seq, ",fastboot");
1400 if (test_opt(sbi, EXTENT_CACHE))
1401 seq_puts(seq, ",extent_cache");
1403 seq_puts(seq, ",noextent_cache");
1404 if (test_opt(sbi, DATA_FLUSH))
1405 seq_puts(seq, ",data_flush");
1407 seq_puts(seq, ",mode=");
1408 if (test_opt(sbi, ADAPTIVE))
1409 seq_puts(seq, "adaptive");
1410 else if (test_opt(sbi, LFS))
1411 seq_puts(seq, "lfs");
1412 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
1413 if (test_opt(sbi, RESERVE_ROOT))
1414 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
1415 F2FS_OPTION(sbi).root_reserved_blocks,
1416 from_kuid_munged(&init_user_ns,
1417 F2FS_OPTION(sbi).s_resuid),
1418 from_kgid_munged(&init_user_ns,
1419 F2FS_OPTION(sbi).s_resgid));
1420 if (F2FS_IO_SIZE_BITS(sbi))
1421 seq_printf(seq, ",io_bits=%u",
1422 F2FS_OPTION(sbi).write_io_size_bits);
1423 #ifdef CONFIG_F2FS_FAULT_INJECTION
1424 if (test_opt(sbi, FAULT_INJECTION)) {
1425 seq_printf(seq, ",fault_injection=%u",
1426 F2FS_OPTION(sbi).fault_info.inject_rate);
1427 seq_printf(seq, ",fault_type=%u",
1428 F2FS_OPTION(sbi).fault_info.inject_type);
1432 if (test_opt(sbi, QUOTA))
1433 seq_puts(seq, ",quota");
1434 if (test_opt(sbi, USRQUOTA))
1435 seq_puts(seq, ",usrquota");
1436 if (test_opt(sbi, GRPQUOTA))
1437 seq_puts(seq, ",grpquota");
1438 if (test_opt(sbi, PRJQUOTA))
1439 seq_puts(seq, ",prjquota");
1441 f2fs_show_quota_options(seq, sbi->sb);
1442 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
1443 seq_printf(seq, ",whint_mode=%s", "user-based");
1444 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
1445 seq_printf(seq, ",whint_mode=%s", "fs-based");
1446 #ifdef CONFIG_FS_ENCRYPTION
1447 if (F2FS_OPTION(sbi).test_dummy_encryption)
1448 seq_puts(seq, ",test_dummy_encryption");
1451 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
1452 seq_printf(seq, ",alloc_mode=%s", "default");
1453 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
1454 seq_printf(seq, ",alloc_mode=%s", "reuse");
1456 if (test_opt(sbi, DISABLE_CHECKPOINT))
1457 seq_printf(seq, ",checkpoint=disable:%u",
1458 F2FS_OPTION(sbi).unusable_cap);
1459 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
1460 seq_printf(seq, ",fsync_mode=%s", "posix");
1461 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
1462 seq_printf(seq, ",fsync_mode=%s", "strict");
1463 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1464 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
1468 static void default_options(struct f2fs_sb_info *sbi)
1470 /* init some FS parameters */
1471 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1472 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1473 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1474 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1475 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
1476 F2FS_OPTION(sbi).test_dummy_encryption = false;
1477 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1478 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
1480 set_opt(sbi, BG_GC);
1481 set_opt(sbi, INLINE_XATTR);
1482 set_opt(sbi, INLINE_DATA);
1483 set_opt(sbi, INLINE_DENTRY);
1484 set_opt(sbi, EXTENT_CACHE);
1485 set_opt(sbi, NOHEAP);
1486 clear_opt(sbi, DISABLE_CHECKPOINT);
1487 F2FS_OPTION(sbi).unusable_cap = 0;
1488 sbi->sb->s_flags |= SB_LAZYTIME;
1489 set_opt(sbi, FLUSH_MERGE);
1490 set_opt(sbi, DISCARD);
1491 if (f2fs_sb_has_blkzoned(sbi))
1492 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1494 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
1496 #ifdef CONFIG_F2FS_FS_XATTR
1497 set_opt(sbi, XATTR_USER);
1499 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1500 set_opt(sbi, POSIX_ACL);
1503 f2fs_build_fault_attr(sbi, 0, 0);
1507 static int f2fs_enable_quotas(struct super_block *sb);
1510 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1512 unsigned int s_flags = sbi->sb->s_flags;
1513 struct cp_control cpc;
1518 if (s_flags & SB_RDONLY) {
1519 f2fs_err(sbi, "checkpoint=disable on readonly fs");
1522 sbi->sb->s_flags |= SB_ACTIVE;
1524 f2fs_update_time(sbi, DISABLE_TIME);
1526 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
1527 mutex_lock(&sbi->gc_mutex);
1528 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1529 if (err == -ENODATA) {
1533 if (err && err != -EAGAIN)
1537 ret = sync_filesystem(sbi->sb);
1539 err = ret ? ret: err;
1543 unusable = f2fs_get_unusable_blocks(sbi);
1544 if (f2fs_disable_cp_again(sbi, unusable)) {
1549 mutex_lock(&sbi->gc_mutex);
1550 cpc.reason = CP_PAUSE;
1551 set_sbi_flag(sbi, SBI_CP_DISABLED);
1552 err = f2fs_write_checkpoint(sbi, &cpc);
1556 spin_lock(&sbi->stat_lock);
1557 sbi->unusable_block_count = unusable;
1558 spin_unlock(&sbi->stat_lock);
1561 mutex_unlock(&sbi->gc_mutex);
1563 sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */
1567 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1569 mutex_lock(&sbi->gc_mutex);
1570 f2fs_dirty_to_prefree(sbi);
1572 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1573 set_sbi_flag(sbi, SBI_IS_DIRTY);
1574 mutex_unlock(&sbi->gc_mutex);
1576 f2fs_sync_fs(sbi->sb, 1);
1579 static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1581 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1582 struct f2fs_mount_info org_mount_opt;
1583 unsigned long old_sb_flags;
1585 bool need_restart_gc = false;
1586 bool need_stop_gc = false;
1587 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
1588 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1589 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
1590 bool checkpoint_changed;
1596 * Save the old mount options in case we
1597 * need to restore them.
1599 org_mount_opt = sbi->mount_opt;
1600 old_sb_flags = sb->s_flags;
1603 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
1604 for (i = 0; i < MAXQUOTAS; i++) {
1605 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1606 org_mount_opt.s_qf_names[i] =
1607 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1609 if (!org_mount_opt.s_qf_names[i]) {
1610 for (j = 0; j < i; j++)
1611 kvfree(org_mount_opt.s_qf_names[j]);
1615 org_mount_opt.s_qf_names[i] = NULL;
1620 /* recover superblocks we couldn't write due to previous RO mount */
1621 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
1622 err = f2fs_commit_super(sbi, false);
1623 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1626 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1629 default_options(sbi);
1631 /* parse mount options */
1632 err = parse_options(sb, data);
1635 checkpoint_changed =
1636 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
1639 * Previous and new state of filesystem is RO,
1640 * so skip checking GC and FLUSH_MERGE conditions.
1642 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
1646 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
1647 err = dquot_suspend(sb, -1);
1650 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
1651 /* dquot_resume needs RW */
1652 sb->s_flags &= ~SB_RDONLY;
1653 if (sb_any_quota_suspended(sb)) {
1654 dquot_resume(sb, -1);
1655 } else if (f2fs_sb_has_quota_ino(sbi)) {
1656 err = f2fs_enable_quotas(sb);
1662 /* disallow enable/disable extent_cache dynamically */
1663 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1665 f2fs_warn(sbi, "switch extent_cache option is not allowed");
1669 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
1671 f2fs_warn(sbi, "switch io_bits option is not allowed");
1675 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1677 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
1682 * We stop the GC thread if FS is mounted as RO
1683 * or if background_gc = off is passed in mount
1684 * option. Also sync the filesystem.
1686 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
1687 if (sbi->gc_thread) {
1688 f2fs_stop_gc_thread(sbi);
1689 need_restart_gc = true;
1691 } else if (!sbi->gc_thread) {
1692 err = f2fs_start_gc_thread(sbi);
1695 need_stop_gc = true;
1698 if (*flags & SB_RDONLY ||
1699 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
1700 writeback_inodes_sb(sb, WB_REASON_SYNC);
1703 set_sbi_flag(sbi, SBI_IS_DIRTY);
1704 set_sbi_flag(sbi, SBI_IS_CLOSE);
1705 f2fs_sync_fs(sb, 1);
1706 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1709 if (checkpoint_changed) {
1710 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1711 err = f2fs_disable_checkpoint(sbi);
1715 f2fs_enable_checkpoint(sbi);
1720 * We stop issue flush thread if FS is mounted as RO
1721 * or if flush_merge is not passed in mount option.
1723 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
1724 clear_opt(sbi, FLUSH_MERGE);
1725 f2fs_destroy_flush_cmd_control(sbi, false);
1727 err = f2fs_create_flush_cmd_control(sbi);
1733 /* Release old quota file names */
1734 for (i = 0; i < MAXQUOTAS; i++)
1735 kvfree(org_mount_opt.s_qf_names[i]);
1737 /* Update the POSIXACL Flag */
1738 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1739 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
1741 limit_reserve_root(sbi);
1742 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
1745 if (need_restart_gc) {
1746 if (f2fs_start_gc_thread(sbi))
1747 f2fs_warn(sbi, "background gc thread has stopped");
1748 } else if (need_stop_gc) {
1749 f2fs_stop_gc_thread(sbi);
1753 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
1754 for (i = 0; i < MAXQUOTAS; i++) {
1755 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
1756 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
1759 sbi->mount_opt = org_mount_opt;
1760 sb->s_flags = old_sb_flags;
1765 /* Read data from quotafile */
1766 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1767 size_t len, loff_t off)
1769 struct inode *inode = sb_dqopt(sb)->files[type];
1770 struct address_space *mapping = inode->i_mapping;
1771 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1772 int offset = off & (sb->s_blocksize - 1);
1775 loff_t i_size = i_size_read(inode);
1782 if (off + len > i_size)
1785 while (toread > 0) {
1786 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1788 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
1790 if (PTR_ERR(page) == -ENOMEM) {
1791 congestion_wait(BLK_RW_ASYNC, HZ/50);
1794 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
1795 return PTR_ERR(page);
1800 if (unlikely(page->mapping != mapping)) {
1801 f2fs_put_page(page, 1);
1804 if (unlikely(!PageUptodate(page))) {
1805 f2fs_put_page(page, 1);
1806 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
1810 kaddr = kmap_atomic(page);
1811 memcpy(data, kaddr + offset, tocopy);
1812 kunmap_atomic(kaddr);
1813 f2fs_put_page(page, 1);
1823 /* Write to quotafile */
1824 static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1825 const char *data, size_t len, loff_t off)
1827 struct inode *inode = sb_dqopt(sb)->files[type];
1828 struct address_space *mapping = inode->i_mapping;
1829 const struct address_space_operations *a_ops = mapping->a_ops;
1830 int offset = off & (sb->s_blocksize - 1);
1831 size_t towrite = len;
1837 while (towrite > 0) {
1838 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1841 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1843 if (unlikely(err)) {
1844 if (err == -ENOMEM) {
1845 congestion_wait(BLK_RW_ASYNC, HZ/50);
1848 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
1852 kaddr = kmap_atomic(page);
1853 memcpy(kaddr + offset, data, tocopy);
1854 kunmap_atomic(kaddr);
1855 flush_dcache_page(page);
1857 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1868 inode->i_mtime = inode->i_ctime = current_time(inode);
1869 f2fs_mark_inode_dirty_sync(inode, false);
1870 return len - towrite;
1873 static struct dquot **f2fs_get_dquots(struct inode *inode)
1875 return F2FS_I(inode)->i_dquot;
1878 static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1880 return &F2FS_I(inode)->i_reserved_quota;
1883 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1885 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
1886 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
1890 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1891 F2FS_OPTION(sbi).s_jquota_fmt, type);
1894 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
1899 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
1900 err = f2fs_enable_quotas(sbi->sb);
1902 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
1908 for (i = 0; i < MAXQUOTAS; i++) {
1909 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1910 err = f2fs_quota_on_mount(sbi, i);
1915 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
1922 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1925 struct inode *qf_inode;
1926 unsigned long qf_inum;
1929 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
1931 qf_inum = f2fs_qf_ino(sb, type);
1935 qf_inode = f2fs_iget(sb, qf_inum);
1936 if (IS_ERR(qf_inode)) {
1937 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
1938 return PTR_ERR(qf_inode);
1941 /* Don't account quota for quota files to avoid recursion */
1942 qf_inode->i_flags |= S_NOQUOTA;
1943 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
1948 static int f2fs_enable_quotas(struct super_block *sb)
1950 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1952 unsigned long qf_inum;
1953 bool quota_mopt[MAXQUOTAS] = {
1954 test_opt(sbi, USRQUOTA),
1955 test_opt(sbi, GRPQUOTA),
1956 test_opt(sbi, PRJQUOTA),
1959 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
1960 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
1964 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1966 for (type = 0; type < MAXQUOTAS; type++) {
1967 qf_inum = f2fs_qf_ino(sb, type);
1969 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1970 DQUOT_USAGE_ENABLED |
1971 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1973 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
1975 for (type--; type >= 0; type--)
1976 dquot_quota_off(sb, type);
1977 set_sbi_flag(F2FS_SB(sb),
1978 SBI_QUOTA_NEED_REPAIR);
1986 int f2fs_quota_sync(struct super_block *sb, int type)
1988 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1989 struct quota_info *dqopt = sb_dqopt(sb);
1996 * down_read(quota_sem)
1997 * dquot_writeback_dquots()
2000 * down_read(quota_sem)
2004 down_read(&sbi->quota_sem);
2005 ret = dquot_writeback_dquots(sb, type);
2010 * Now when everything is written we can discard the pagecache so
2011 * that userspace sees the changes.
2013 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
2014 struct address_space *mapping;
2016 if (type != -1 && cnt != type)
2018 if (!sb_has_quota_active(sb, cnt))
2021 mapping = dqopt->files[cnt]->i_mapping;
2023 ret = filemap_fdatawrite(mapping);
2027 /* if we are using journalled quota */
2028 if (is_journalled_quota(sbi))
2031 ret = filemap_fdatawait(mapping);
2033 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2035 inode_lock(dqopt->files[cnt]);
2036 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
2037 inode_unlock(dqopt->files[cnt]);
2041 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2042 up_read(&sbi->quota_sem);
2043 f2fs_unlock_op(sbi);
2047 static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2048 const struct path *path)
2050 struct inode *inode;
2053 /* if quota sysfile exists, deny enabling quota with specific file */
2054 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2055 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2059 err = f2fs_quota_sync(sb, type);
2063 err = dquot_quota_on(sb, type, format_id, path);
2067 inode = d_inode(path->dentry);
2070 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
2071 f2fs_set_inode_flags(inode);
2072 inode_unlock(inode);
2073 f2fs_mark_inode_dirty_sync(inode, false);
2078 static int __f2fs_quota_off(struct super_block *sb, int type)
2080 struct inode *inode = sb_dqopt(sb)->files[type];
2083 if (!inode || !igrab(inode))
2084 return dquot_quota_off(sb, type);
2086 err = f2fs_quota_sync(sb, type);
2090 err = dquot_quota_off(sb, type);
2091 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
2095 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
2096 f2fs_set_inode_flags(inode);
2097 inode_unlock(inode);
2098 f2fs_mark_inode_dirty_sync(inode, false);
2104 static int f2fs_quota_off(struct super_block *sb, int type)
2106 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2109 err = __f2fs_quota_off(sb, type);
2112 * quotactl can shutdown journalled quota, result in inconsistence
2113 * between quota record and fs data by following updates, tag the
2114 * flag to let fsck be aware of it.
2116 if (is_journalled_quota(sbi))
2117 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2121 void f2fs_quota_off_umount(struct super_block *sb)
2126 for (type = 0; type < MAXQUOTAS; type++) {
2127 err = __f2fs_quota_off(sb, type);
2129 int ret = dquot_quota_off(sb, type);
2131 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2133 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2137 * In case of checkpoint=disable, we must flush quota blocks.
2138 * This can cause NULL exception for node_inode in end_io, since
2139 * put_super already dropped it.
2141 sync_filesystem(sb);
2144 static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2146 struct quota_info *dqopt = sb_dqopt(sb);
2149 for (type = 0; type < MAXQUOTAS; type++) {
2150 if (!dqopt->files[type])
2152 f2fs_inode_synced(dqopt->files[type]);
2156 static int f2fs_dquot_commit(struct dquot *dquot)
2158 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2161 down_read(&sbi->quota_sem);
2162 ret = dquot_commit(dquot);
2164 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2165 up_read(&sbi->quota_sem);
2169 static int f2fs_dquot_acquire(struct dquot *dquot)
2171 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2174 down_read(&sbi->quota_sem);
2175 ret = dquot_acquire(dquot);
2177 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2178 up_read(&sbi->quota_sem);
2182 static int f2fs_dquot_release(struct dquot *dquot)
2184 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2187 down_read(&sbi->quota_sem);
2188 ret = dquot_release(dquot);
2190 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2191 up_read(&sbi->quota_sem);
2195 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2197 struct super_block *sb = dquot->dq_sb;
2198 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2201 down_read(&sbi->quota_sem);
2202 ret = dquot_mark_dquot_dirty(dquot);
2204 /* if we are using journalled quota */
2205 if (is_journalled_quota(sbi))
2206 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2208 up_read(&sbi->quota_sem);
2212 static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2214 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2217 down_read(&sbi->quota_sem);
2218 ret = dquot_commit_info(sb, type);
2220 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2221 up_read(&sbi->quota_sem);
2225 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
2227 *projid = F2FS_I(inode)->i_projid;
2231 static const struct dquot_operations f2fs_quota_operations = {
2232 .get_reserved_space = f2fs_get_reserved_space,
2233 .write_dquot = f2fs_dquot_commit,
2234 .acquire_dquot = f2fs_dquot_acquire,
2235 .release_dquot = f2fs_dquot_release,
2236 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2237 .write_info = f2fs_dquot_commit_info,
2238 .alloc_dquot = dquot_alloc,
2239 .destroy_dquot = dquot_destroy,
2240 .get_projid = f2fs_get_projid,
2241 .get_next_id = dquot_get_next_id,
2244 static const struct quotactl_ops f2fs_quotactl_ops = {
2245 .quota_on = f2fs_quota_on,
2246 .quota_off = f2fs_quota_off,
2247 .quota_sync = f2fs_quota_sync,
2248 .get_state = dquot_get_state,
2249 .set_info = dquot_set_dqinfo,
2250 .get_dqblk = dquot_get_dqblk,
2251 .set_dqblk = dquot_set_dqblk,
2252 .get_nextdqblk = dquot_get_next_dqblk,
2255 int f2fs_quota_sync(struct super_block *sb, int type)
2260 void f2fs_quota_off_umount(struct super_block *sb)
2265 static const struct super_operations f2fs_sops = {
2266 .alloc_inode = f2fs_alloc_inode,
2267 .free_inode = f2fs_free_inode,
2268 .drop_inode = f2fs_drop_inode,
2269 .write_inode = f2fs_write_inode,
2270 .dirty_inode = f2fs_dirty_inode,
2271 .show_options = f2fs_show_options,
2273 .quota_read = f2fs_quota_read,
2274 .quota_write = f2fs_quota_write,
2275 .get_dquots = f2fs_get_dquots,
2277 .evict_inode = f2fs_evict_inode,
2278 .put_super = f2fs_put_super,
2279 .sync_fs = f2fs_sync_fs,
2280 .freeze_fs = f2fs_freeze,
2281 .unfreeze_fs = f2fs_unfreeze,
2282 .statfs = f2fs_statfs,
2283 .remount_fs = f2fs_remount,
2286 #ifdef CONFIG_FS_ENCRYPTION
2287 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2289 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2290 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2294 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2297 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2300 * Encrypting the root directory is not allowed because fsck
2301 * expects lost+found directory to exist and remain unencrypted
2302 * if LOST_FOUND feature is enabled.
2305 if (f2fs_sb_has_lost_found(sbi) &&
2306 inode->i_ino == F2FS_ROOT_INO(sbi))
2309 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2310 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2311 ctx, len, fs_data, XATTR_CREATE);
2314 static bool f2fs_dummy_context(struct inode *inode)
2316 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2319 static bool f2fs_has_stable_inodes(struct super_block *sb)
2324 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
2325 int *ino_bits_ret, int *lblk_bits_ret)
2327 *ino_bits_ret = 8 * sizeof(nid_t);
2328 *lblk_bits_ret = 8 * sizeof(block_t);
2331 static const struct fscrypt_operations f2fs_cryptops = {
2332 .key_prefix = "f2fs:",
2333 .get_context = f2fs_get_context,
2334 .set_context = f2fs_set_context,
2335 .dummy_context = f2fs_dummy_context,
2336 .empty_dir = f2fs_empty_dir,
2337 .max_namelen = F2FS_NAME_LEN,
2338 .has_stable_inodes = f2fs_has_stable_inodes,
2339 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
2343 static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2344 u64 ino, u32 generation)
2346 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2347 struct inode *inode;
2349 if (f2fs_check_nid_range(sbi, ino))
2350 return ERR_PTR(-ESTALE);
2353 * f2fs_iget isn't quite right if the inode is currently unallocated!
2354 * However f2fs_iget currently does appropriate checks to handle stale
2355 * inodes so everything is OK.
2357 inode = f2fs_iget(sb, ino);
2359 return ERR_CAST(inode);
2360 if (unlikely(generation && inode->i_generation != generation)) {
2361 /* we didn't find the right inode.. */
2363 return ERR_PTR(-ESTALE);
2368 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2369 int fh_len, int fh_type)
2371 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2372 f2fs_nfs_get_inode);
2375 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2376 int fh_len, int fh_type)
2378 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2379 f2fs_nfs_get_inode);
2382 static const struct export_operations f2fs_export_ops = {
2383 .fh_to_dentry = f2fs_fh_to_dentry,
2384 .fh_to_parent = f2fs_fh_to_parent,
2385 .get_parent = f2fs_get_parent,
2388 static loff_t max_file_blocks(void)
2391 loff_t leaf_count = DEF_ADDRS_PER_BLOCK;
2394 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
2395 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
2396 * space in inode.i_addr, it will be more safe to reassign
2400 /* two direct node blocks */
2401 result += (leaf_count * 2);
2403 /* two indirect node blocks */
2404 leaf_count *= NIDS_PER_BLOCK;
2405 result += (leaf_count * 2);
2407 /* one double indirect node block */
2408 leaf_count *= NIDS_PER_BLOCK;
2409 result += leaf_count;
2414 static int __f2fs_commit_super(struct buffer_head *bh,
2415 struct f2fs_super_block *super)
2419 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
2420 set_buffer_dirty(bh);
2423 /* it's rare case, we can do fua all the time */
2424 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
2427 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
2428 struct buffer_head *bh)
2430 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2431 (bh->b_data + F2FS_SUPER_OFFSET);
2432 struct super_block *sb = sbi->sb;
2433 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2434 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2435 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2436 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2437 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2438 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2439 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2440 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2441 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2442 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2443 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2444 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2445 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2446 u64 main_end_blkaddr = main_blkaddr +
2447 (segment_count_main << log_blocks_per_seg);
2448 u64 seg_end_blkaddr = segment0_blkaddr +
2449 (segment_count << log_blocks_per_seg);
2451 if (segment0_blkaddr != cp_blkaddr) {
2452 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2453 segment0_blkaddr, cp_blkaddr);
2457 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2459 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2460 cp_blkaddr, sit_blkaddr,
2461 segment_count_ckpt << log_blocks_per_seg);
2465 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2467 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2468 sit_blkaddr, nat_blkaddr,
2469 segment_count_sit << log_blocks_per_seg);
2473 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2475 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2476 nat_blkaddr, ssa_blkaddr,
2477 segment_count_nat << log_blocks_per_seg);
2481 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2483 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2484 ssa_blkaddr, main_blkaddr,
2485 segment_count_ssa << log_blocks_per_seg);
2489 if (main_end_blkaddr > seg_end_blkaddr) {
2490 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2493 (segment_count << log_blocks_per_seg),
2494 segment_count_main << log_blocks_per_seg);
2496 } else if (main_end_blkaddr < seg_end_blkaddr) {
2500 /* fix in-memory information all the time */
2501 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2502 segment0_blkaddr) >> log_blocks_per_seg);
2504 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
2505 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2508 err = __f2fs_commit_super(bh, NULL);
2509 res = err ? "failed" : "done";
2511 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2514 (segment_count << log_blocks_per_seg),
2515 segment_count_main << log_blocks_per_seg);
2522 static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
2523 struct buffer_head *bh)
2525 block_t segment_count, segs_per_sec, secs_per_zone;
2526 block_t total_sections, blocks_per_seg;
2527 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2528 (bh->b_data + F2FS_SUPER_OFFSET);
2529 unsigned int blocksize;
2530 size_t crc_offset = 0;
2533 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2534 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2535 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2539 /* Check checksum_offset and crc in superblock */
2540 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
2541 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2543 offsetof(struct f2fs_super_block, crc)) {
2544 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2546 return -EFSCORRUPTED;
2548 crc = le32_to_cpu(raw_super->crc);
2549 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
2550 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
2551 return -EFSCORRUPTED;
2555 /* Currently, support only 4KB page cache size */
2556 if (F2FS_BLKSIZE != PAGE_SIZE) {
2557 f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
2559 return -EFSCORRUPTED;
2562 /* Currently, support only 4KB block size */
2563 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
2564 if (blocksize != F2FS_BLKSIZE) {
2565 f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
2567 return -EFSCORRUPTED;
2570 /* check log blocks per segment */
2571 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
2572 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2573 le32_to_cpu(raw_super->log_blocks_per_seg));
2574 return -EFSCORRUPTED;
2577 /* Currently, support 512/1024/2048/4096 bytes sector size */
2578 if (le32_to_cpu(raw_super->log_sectorsize) >
2579 F2FS_MAX_LOG_SECTOR_SIZE ||
2580 le32_to_cpu(raw_super->log_sectorsize) <
2581 F2FS_MIN_LOG_SECTOR_SIZE) {
2582 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2583 le32_to_cpu(raw_super->log_sectorsize));
2584 return -EFSCORRUPTED;
2586 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2587 le32_to_cpu(raw_super->log_sectorsize) !=
2588 F2FS_MAX_LOG_SECTOR_SIZE) {
2589 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
2590 le32_to_cpu(raw_super->log_sectors_per_block),
2591 le32_to_cpu(raw_super->log_sectorsize));
2592 return -EFSCORRUPTED;
2595 segment_count = le32_to_cpu(raw_super->segment_count);
2596 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2597 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2598 total_sections = le32_to_cpu(raw_super->section_count);
2600 /* blocks_per_seg should be 512, given the above check */
2601 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2603 if (segment_count > F2FS_MAX_SEGMENT ||
2604 segment_count < F2FS_MIN_SEGMENTS) {
2605 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
2606 return -EFSCORRUPTED;
2609 if (total_sections > segment_count ||
2610 total_sections < F2FS_MIN_SEGMENTS ||
2611 segs_per_sec > segment_count || !segs_per_sec) {
2612 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
2613 segment_count, total_sections, segs_per_sec);
2614 return -EFSCORRUPTED;
2617 if ((segment_count / segs_per_sec) < total_sections) {
2618 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
2619 segment_count, segs_per_sec, total_sections);
2620 return -EFSCORRUPTED;
2623 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
2624 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
2625 segment_count, le64_to_cpu(raw_super->block_count));
2626 return -EFSCORRUPTED;
2629 if (RDEV(0).path[0]) {
2630 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
2633 while (i < MAX_DEVICES && RDEV(i).path[0]) {
2634 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
2637 if (segment_count != dev_seg_count) {
2638 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
2639 segment_count, dev_seg_count);
2640 return -EFSCORRUPTED;
2644 if (secs_per_zone > total_sections || !secs_per_zone) {
2645 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
2646 secs_per_zone, total_sections);
2647 return -EFSCORRUPTED;
2649 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2650 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2651 (le32_to_cpu(raw_super->extension_count) +
2652 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
2653 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
2654 le32_to_cpu(raw_super->extension_count),
2655 raw_super->hot_ext_count,
2656 F2FS_MAX_EXTENSION);
2657 return -EFSCORRUPTED;
2660 if (le32_to_cpu(raw_super->cp_payload) >
2661 (blocks_per_seg - F2FS_CP_PACKS)) {
2662 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
2663 le32_to_cpu(raw_super->cp_payload),
2664 blocks_per_seg - F2FS_CP_PACKS);
2665 return -EFSCORRUPTED;
2668 /* check reserved ino info */
2669 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2670 le32_to_cpu(raw_super->meta_ino) != 2 ||
2671 le32_to_cpu(raw_super->root_ino) != 3) {
2672 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2673 le32_to_cpu(raw_super->node_ino),
2674 le32_to_cpu(raw_super->meta_ino),
2675 le32_to_cpu(raw_super->root_ino));
2676 return -EFSCORRUPTED;
2679 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
2680 if (sanity_check_area_boundary(sbi, bh))
2681 return -EFSCORRUPTED;
2686 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
2688 unsigned int total, fsmeta;
2689 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2690 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2691 unsigned int ovp_segments, reserved_segments;
2692 unsigned int main_segs, blocks_per_seg;
2693 unsigned int sit_segs, nat_segs;
2694 unsigned int sit_bitmap_size, nat_bitmap_size;
2695 unsigned int log_blocks_per_seg;
2696 unsigned int segment_count_main;
2697 unsigned int cp_pack_start_sum, cp_payload;
2698 block_t user_block_count, valid_user_blocks;
2699 block_t avail_node_count, valid_node_count;
2702 total = le32_to_cpu(raw_super->segment_count);
2703 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
2704 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2706 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2708 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2709 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2711 if (unlikely(fsmeta >= total))
2714 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2715 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2717 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2718 ovp_segments == 0 || reserved_segments == 0)) {
2719 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2723 user_block_count = le64_to_cpu(ckpt->user_block_count);
2724 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2725 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2726 if (!user_block_count || user_block_count >=
2727 segment_count_main << log_blocks_per_seg) {
2728 f2fs_err(sbi, "Wrong user_block_count: %u",
2733 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2734 if (valid_user_blocks > user_block_count) {
2735 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
2736 valid_user_blocks, user_block_count);
2740 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
2741 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
2742 if (valid_node_count > avail_node_count) {
2743 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
2744 valid_node_count, avail_node_count);
2748 main_segs = le32_to_cpu(raw_super->segment_count_main);
2749 blocks_per_seg = sbi->blocks_per_seg;
2751 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2752 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2753 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2755 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2756 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2757 le32_to_cpu(ckpt->cur_node_segno[j])) {
2758 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
2760 le32_to_cpu(ckpt->cur_node_segno[i]));
2765 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2766 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2767 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2769 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2770 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2771 le32_to_cpu(ckpt->cur_data_segno[j])) {
2772 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
2774 le32_to_cpu(ckpt->cur_data_segno[i]));
2779 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2780 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
2781 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2782 le32_to_cpu(ckpt->cur_data_segno[j])) {
2783 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
2785 le32_to_cpu(ckpt->cur_node_segno[i]));
2791 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2792 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
2794 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2795 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
2796 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
2797 sit_bitmap_size, nat_bitmap_size);
2801 cp_pack_start_sum = __start_sum_addr(sbi);
2802 cp_payload = __cp_payload(sbi);
2803 if (cp_pack_start_sum < cp_payload + 1 ||
2804 cp_pack_start_sum > blocks_per_seg - 1 -
2806 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
2811 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
2812 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2813 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
2814 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
2815 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
2816 le32_to_cpu(ckpt->checksum_offset));
2820 if (unlikely(f2fs_cp_error(sbi))) {
2821 f2fs_err(sbi, "A bug case: need to run fsck");
2827 static void init_sb_info(struct f2fs_sb_info *sbi)
2829 struct f2fs_super_block *raw_super = sbi->raw_super;
2832 sbi->log_sectors_per_block =
2833 le32_to_cpu(raw_super->log_sectors_per_block);
2834 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2835 sbi->blocksize = 1 << sbi->log_blocksize;
2836 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2837 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2838 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2839 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2840 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2841 sbi->total_node_count =
2842 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2843 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2844 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2845 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2846 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
2847 sbi->cur_victim_sec = NULL_SECNO;
2848 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2849 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
2850 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
2851 sbi->migration_granularity = sbi->segs_per_sec;
2853 sbi->dir_level = DEF_DIR_LEVEL;
2854 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
2855 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
2856 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2857 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
2858 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
2859 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2860 DEF_UMOUNT_DISCARD_TIMEOUT;
2861 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2863 for (i = 0; i < NR_COUNT_TYPE; i++)
2864 atomic_set(&sbi->nr_pages[i], 0);
2866 for (i = 0; i < META; i++)
2867 atomic_set(&sbi->wb_sync_req[i], 0);
2869 INIT_LIST_HEAD(&sbi->s_list);
2870 mutex_init(&sbi->umount_mutex);
2871 init_rwsem(&sbi->io_order_lock);
2872 spin_lock_init(&sbi->cp_lock);
2874 sbi->dirty_device = 0;
2875 spin_lock_init(&sbi->dev_lock);
2877 init_rwsem(&sbi->sb_lock);
2878 init_rwsem(&sbi->pin_sem);
2881 static int init_percpu_info(struct f2fs_sb_info *sbi)
2885 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2889 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
2892 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2897 #ifdef CONFIG_BLK_DEV_ZONED
2898 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
2901 struct f2fs_dev_info *dev = data;
2903 if (zone->type != BLK_ZONE_TYPE_CONVENTIONAL)
2904 set_bit(idx, dev->blkz_seq);
2908 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
2910 struct block_device *bdev = FDEV(devi).bdev;
2911 sector_t nr_sectors = bdev->bd_part->nr_sects;
2914 if (!f2fs_sb_has_blkzoned(sbi))
2917 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
2918 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
2920 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
2921 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2922 __ilog2_u32(sbi->blocks_per_blkz))
2924 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
2925 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2926 sbi->log_blocks_per_blkz;
2927 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
2928 FDEV(devi).nr_blkz++;
2930 FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
2931 BITS_TO_LONGS(FDEV(devi).nr_blkz)
2932 * sizeof(unsigned long),
2934 if (!FDEV(devi).blkz_seq)
2937 /* Get block zones type */
2938 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
2948 * Read f2fs raw super block.
2949 * Because we have two copies of super block, so read both of them
2950 * to get the first valid one. If any one of them is broken, we pass
2951 * them recovery flag back to the caller.
2953 static int read_raw_super_block(struct f2fs_sb_info *sbi,
2954 struct f2fs_super_block **raw_super,
2955 int *valid_super_block, int *recovery)
2957 struct super_block *sb = sbi->sb;
2959 struct buffer_head *bh;
2960 struct f2fs_super_block *super;
2963 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2967 for (block = 0; block < 2; block++) {
2968 bh = sb_bread(sb, block);
2970 f2fs_err(sbi, "Unable to read %dth superblock",
2977 /* sanity checking of raw super */
2978 err = sanity_check_raw_super(sbi, bh);
2980 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
2988 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2990 *valid_super_block = block;
2996 /* No valid superblock */
3005 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
3007 struct buffer_head *bh;
3011 if ((recover && f2fs_readonly(sbi->sb)) ||
3012 bdev_read_only(sbi->sb->s_bdev)) {
3013 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
3017 /* we should update superblock crc here */
3018 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
3019 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3020 offsetof(struct f2fs_super_block, crc));
3021 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3024 /* write back-up superblock first */
3025 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
3028 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3031 /* if we are in recovery path, skip writing valid superblock */
3035 /* write current valid superblock */
3036 bh = sb_bread(sbi->sb, sbi->valid_super_block);
3039 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3044 static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3046 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3047 unsigned int max_devices = MAX_DEVICES;
3050 /* Initialize single device information */
3051 if (!RDEV(0).path[0]) {
3052 if (!bdev_is_zoned(sbi->sb->s_bdev))
3058 * Initialize multiple devices information, or single
3059 * zoned block device information.
3061 sbi->devs = f2fs_kzalloc(sbi,
3062 array_size(max_devices,
3063 sizeof(struct f2fs_dev_info)),
3068 for (i = 0; i < max_devices; i++) {
3070 if (i > 0 && !RDEV(i).path[0])
3073 if (max_devices == 1) {
3074 /* Single zoned block device mount */
3076 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3077 sbi->sb->s_mode, sbi->sb->s_type);
3079 /* Multi-device mount */
3080 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3081 FDEV(i).total_segments =
3082 le32_to_cpu(RDEV(i).total_segments);
3084 FDEV(i).start_blk = 0;
3085 FDEV(i).end_blk = FDEV(i).start_blk +
3086 (FDEV(i).total_segments <<
3087 sbi->log_blocks_per_seg) - 1 +
3088 le32_to_cpu(raw_super->segment0_blkaddr);
3090 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3091 FDEV(i).end_blk = FDEV(i).start_blk +
3092 (FDEV(i).total_segments <<
3093 sbi->log_blocks_per_seg) - 1;
3095 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3096 sbi->sb->s_mode, sbi->sb->s_type);
3098 if (IS_ERR(FDEV(i).bdev))
3099 return PTR_ERR(FDEV(i).bdev);
3101 /* to release errored devices */
3102 sbi->s_ndevs = i + 1;
3104 #ifdef CONFIG_BLK_DEV_ZONED
3105 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
3106 !f2fs_sb_has_blkzoned(sbi)) {
3107 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3110 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3111 if (init_blkz_info(sbi, i)) {
3112 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3115 if (max_devices == 1)
3117 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3119 FDEV(i).total_segments,
3120 FDEV(i).start_blk, FDEV(i).end_blk,
3121 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3122 "Host-aware" : "Host-managed");
3126 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3128 FDEV(i).total_segments,
3129 FDEV(i).start_blk, FDEV(i).end_blk);
3132 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3136 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3138 #ifdef CONFIG_UNICODE
3139 if (f2fs_sb_has_casefold(sbi) && !sbi->s_encoding) {
3140 const struct f2fs_sb_encodings *encoding_info;
3141 struct unicode_map *encoding;
3142 __u16 encoding_flags;
3144 if (f2fs_sb_has_encrypt(sbi)) {
3146 "Can't mount with encoding and encryption");
3150 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3153 "Encoding requested by superblock is unknown");
3157 encoding = utf8_load(encoding_info->version);
3158 if (IS_ERR(encoding)) {
3160 "can't mount with superblock charset: %s-%s "
3161 "not supported by the kernel. flags: 0x%x.",
3162 encoding_info->name, encoding_info->version,
3164 return PTR_ERR(encoding);
3166 f2fs_info(sbi, "Using encoding defined by superblock: "
3167 "%s-%s with flags 0x%hx", encoding_info->name,
3168 encoding_info->version?:"\b", encoding_flags);
3170 sbi->s_encoding = encoding;
3171 sbi->s_encoding_flags = encoding_flags;
3172 sbi->sb->s_d_op = &f2fs_dentry_ops;
3175 if (f2fs_sb_has_casefold(sbi)) {
3176 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3183 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3185 struct f2fs_sm_info *sm_i = SM_I(sbi);
3187 /* adjust parameters according to the volume size */
3188 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
3189 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
3190 sm_i->dcc_info->discard_granularity = 1;
3191 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3194 sbi->readdir_ra = 1;
3197 static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3199 struct f2fs_sb_info *sbi;
3200 struct f2fs_super_block *raw_super;
3203 bool skip_recovery = false, need_fsck = false;
3204 char *options = NULL;
3205 int recovery, i, valid_super_block;
3206 struct curseg_info *seg_i;
3212 valid_super_block = -1;
3215 /* allocate memory for f2fs-specific super block info */
3216 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3222 /* Load the checksum driver */
3223 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3224 if (IS_ERR(sbi->s_chksum_driver)) {
3225 f2fs_err(sbi, "Cannot load crc32 driver.");
3226 err = PTR_ERR(sbi->s_chksum_driver);
3227 sbi->s_chksum_driver = NULL;
3231 /* set a block size */
3232 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
3233 f2fs_err(sbi, "unable to set blocksize");
3237 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
3242 sb->s_fs_info = sbi;
3243 sbi->raw_super = raw_super;
3245 /* precompute checksum seed for metadata */
3246 if (f2fs_sb_has_inode_chksum(sbi))
3247 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3248 sizeof(raw_super->uuid));
3251 * The BLKZONED feature indicates that the drive was formatted with
3252 * zone alignment optimization. This is optional for host-aware
3253 * devices, but mandatory for host-managed zoned block devices.
3255 #ifndef CONFIG_BLK_DEV_ZONED
3256 if (f2fs_sb_has_blkzoned(sbi)) {
3257 f2fs_err(sbi, "Zoned block device support is not enabled");
3262 default_options(sbi);
3263 /* parse mount options */
3264 options = kstrdup((const char *)data, GFP_KERNEL);
3265 if (data && !options) {
3270 err = parse_options(sb, options);
3274 sbi->max_file_blocks = max_file_blocks();
3275 sb->s_maxbytes = sbi->max_file_blocks <<
3276 le32_to_cpu(raw_super->log_blocksize);
3277 sb->s_max_links = F2FS_LINK_MAX;
3279 err = f2fs_setup_casefold(sbi);
3284 sb->dq_op = &f2fs_quota_operations;
3285 sb->s_qcop = &f2fs_quotactl_ops;
3286 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
3288 if (f2fs_sb_has_quota_ino(sbi)) {
3289 for (i = 0; i < MAXQUOTAS; i++) {
3290 if (f2fs_qf_ino(sbi->sb, i))
3291 sbi->nquota_files++;
3296 sb->s_op = &f2fs_sops;
3297 #ifdef CONFIG_FS_ENCRYPTION
3298 sb->s_cop = &f2fs_cryptops;
3300 #ifdef CONFIG_FS_VERITY
3301 sb->s_vop = &f2fs_verityops;
3303 sb->s_xattr = f2fs_xattr_handlers;
3304 sb->s_export_op = &f2fs_export_ops;
3305 sb->s_magic = F2FS_SUPER_MAGIC;
3306 sb->s_time_gran = 1;
3307 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3308 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
3309 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
3310 sb->s_iflags |= SB_I_CGROUPWB;
3312 /* init f2fs-specific super block info */
3313 sbi->valid_super_block = valid_super_block;
3314 mutex_init(&sbi->gc_mutex);
3315 mutex_init(&sbi->writepages);
3316 mutex_init(&sbi->cp_mutex);
3317 mutex_init(&sbi->resize_mutex);
3318 init_rwsem(&sbi->node_write);
3319 init_rwsem(&sbi->node_change);
3321 /* disallow all the data/node/meta page writes */
3322 set_sbi_flag(sbi, SBI_POR_DOING);
3323 spin_lock_init(&sbi->stat_lock);
3325 /* init iostat info */
3326 spin_lock_init(&sbi->iostat_lock);
3327 sbi->iostat_enable = false;
3329 for (i = 0; i < NR_PAGE_TYPE; i++) {
3330 int n = (i == META) ? 1: NR_TEMP_TYPE;
3336 sizeof(struct f2fs_bio_info)),
3338 if (!sbi->write_io[i]) {
3343 for (j = HOT; j < n; j++) {
3344 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3345 sbi->write_io[i][j].sbi = sbi;
3346 sbi->write_io[i][j].bio = NULL;
3347 spin_lock_init(&sbi->write_io[i][j].io_lock);
3348 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
3349 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
3350 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
3354 init_rwsem(&sbi->cp_rwsem);
3355 init_rwsem(&sbi->quota_sem);
3356 init_waitqueue_head(&sbi->cp_wait);
3359 err = init_percpu_info(sbi);
3363 if (F2FS_IO_ALIGNED(sbi)) {
3364 sbi->write_io_dummy =
3365 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
3366 if (!sbi->write_io_dummy) {
3372 /* get an inode for meta space */
3373 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3374 if (IS_ERR(sbi->meta_inode)) {
3375 f2fs_err(sbi, "Failed to read F2FS meta data inode");
3376 err = PTR_ERR(sbi->meta_inode);
3380 err = f2fs_get_valid_checkpoint(sbi);
3382 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
3383 goto free_meta_inode;
3386 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3387 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
3388 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3389 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3390 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3393 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3394 set_sbi_flag(sbi, SBI_NEED_FSCK);
3396 /* Initialize device list */
3397 err = f2fs_scan_devices(sbi);
3399 f2fs_err(sbi, "Failed to find devices");
3403 sbi->total_valid_node_count =
3404 le32_to_cpu(sbi->ckpt->valid_node_count);
3405 percpu_counter_set(&sbi->total_valid_inode_count,
3406 le32_to_cpu(sbi->ckpt->valid_inode_count));
3407 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3408 sbi->total_valid_block_count =
3409 le64_to_cpu(sbi->ckpt->valid_block_count);
3410 sbi->last_valid_block_count = sbi->total_valid_block_count;
3411 sbi->reserved_blocks = 0;
3412 sbi->current_reserved_blocks = 0;
3413 limit_reserve_root(sbi);
3415 for (i = 0; i < NR_INODE_TYPE; i++) {
3416 INIT_LIST_HEAD(&sbi->inode_list[i]);
3417 spin_lock_init(&sbi->inode_lock[i]);
3419 mutex_init(&sbi->flush_lock);
3421 f2fs_init_extent_cache_info(sbi);
3423 f2fs_init_ino_entry_info(sbi);
3425 f2fs_init_fsync_node_info(sbi);
3427 /* setup f2fs internal modules */
3428 err = f2fs_build_segment_manager(sbi);
3430 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3434 err = f2fs_build_node_manager(sbi);
3436 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3441 /* For write statistics */
3442 if (sb->s_bdev->bd_part)
3443 sbi->sectors_written_start =
3444 (u64)part_stat_read(sb->s_bdev->bd_part,
3445 sectors[STAT_WRITE]);
3447 /* Read accumulated write IO statistics if exists */
3448 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3449 if (__exist_node_summaries(sbi))
3450 sbi->kbytes_written =
3451 le64_to_cpu(seg_i->journal->info.kbytes_written);
3453 f2fs_build_gc_manager(sbi);
3455 err = f2fs_build_stats(sbi);
3459 /* get an inode for node space */
3460 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3461 if (IS_ERR(sbi->node_inode)) {
3462 f2fs_err(sbi, "Failed to read node inode");
3463 err = PTR_ERR(sbi->node_inode);
3467 /* read root inode and dentry */
3468 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3470 f2fs_err(sbi, "Failed to read root inode");
3471 err = PTR_ERR(root);
3472 goto free_node_inode;
3474 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3475 !root->i_size || !root->i_nlink) {
3478 goto free_node_inode;
3481 sb->s_root = d_make_root(root); /* allocate root dentry */
3484 goto free_node_inode;
3487 err = f2fs_register_sysfs(sbi);
3489 goto free_root_inode;
3492 /* Enable quota usage during mount */
3493 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
3494 err = f2fs_enable_quotas(sb);
3496 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
3499 /* if there are nt orphan nodes free them */
3500 err = f2fs_recover_orphan_inodes(sbi);
3504 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
3505 goto reset_checkpoint;
3507 /* recover fsynced data */
3508 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
3510 * mount should be failed, when device has readonly mode, and
3511 * previous checkpoint was not done by clean system shutdown.
3513 if (f2fs_hw_is_readonly(sbi)) {
3514 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3516 f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
3519 f2fs_info(sbi, "write access unavailable, skipping recovery");
3520 goto reset_checkpoint;
3524 set_sbi_flag(sbi, SBI_NEED_FSCK);
3527 goto reset_checkpoint;
3529 err = f2fs_recover_fsync_data(sbi, false);
3532 skip_recovery = true;
3534 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3539 err = f2fs_recover_fsync_data(sbi, true);
3541 if (!f2fs_readonly(sb) && err > 0) {
3543 f2fs_err(sbi, "Need to recover fsync data");
3548 /* f2fs_recover_fsync_data() cleared this already */
3549 clear_sbi_flag(sbi, SBI_POR_DOING);
3551 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3552 err = f2fs_disable_checkpoint(sbi);
3554 goto sync_free_meta;
3555 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3556 f2fs_enable_checkpoint(sbi);
3560 * If filesystem is not mounted as read-only then
3561 * do start the gc_thread.
3563 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
3564 /* After POR, we can run background GC thread.*/
3565 err = f2fs_start_gc_thread(sbi);
3567 goto sync_free_meta;
3571 /* recover broken superblock */
3573 err = f2fs_commit_super(sbi, true);
3574 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
3575 sbi->valid_super_block ? 1 : 2, err);
3578 f2fs_join_shrinker(sbi);
3580 f2fs_tuning_parameters(sbi);
3582 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
3583 cur_cp_version(F2FS_CKPT(sbi)));
3584 f2fs_update_time(sbi, CP_TIME);
3585 f2fs_update_time(sbi, REQ_TIME);
3586 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3590 /* safe to flush all the data */
3591 sync_filesystem(sbi->sb);
3596 f2fs_truncate_quota_inode_pages(sb);
3597 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
3598 f2fs_quota_off_umount(sbi->sb);
3601 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
3602 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
3603 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3604 * falls into an infinite loop in f2fs_sync_meta_pages().
3606 truncate_inode_pages_final(META_MAPPING(sbi));
3607 /* evict some inodes being cached by GC */
3609 f2fs_unregister_sysfs(sbi);
3614 f2fs_release_ino_entry(sbi, true);
3615 truncate_inode_pages_final(NODE_MAPPING(sbi));
3616 iput(sbi->node_inode);
3617 sbi->node_inode = NULL;
3619 f2fs_destroy_stats(sbi);
3621 f2fs_destroy_node_manager(sbi);
3623 f2fs_destroy_segment_manager(sbi);
3625 destroy_device_list(sbi);
3628 make_bad_inode(sbi->meta_inode);
3629 iput(sbi->meta_inode);
3630 sbi->meta_inode = NULL;
3632 mempool_destroy(sbi->write_io_dummy);
3634 destroy_percpu_info(sbi);
3636 for (i = 0; i < NR_PAGE_TYPE; i++)
3637 kvfree(sbi->write_io[i]);
3639 #ifdef CONFIG_UNICODE
3640 utf8_unload(sbi->s_encoding);
3644 for (i = 0; i < MAXQUOTAS; i++)
3645 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
3651 if (sbi->s_chksum_driver)
3652 crypto_free_shash(sbi->s_chksum_driver);
3655 /* give only one another chance */
3656 if (retry_cnt > 0 && skip_recovery) {
3658 shrink_dcache_sb(sb);
3664 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3665 const char *dev_name, void *data)
3667 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3670 static void kill_f2fs_super(struct super_block *sb)
3673 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3675 set_sbi_flag(sbi, SBI_IS_CLOSE);
3676 f2fs_stop_gc_thread(sbi);
3677 f2fs_stop_discard_thread(sbi);
3679 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3680 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3681 struct cp_control cpc = {
3682 .reason = CP_UMOUNT,
3684 f2fs_write_checkpoint(sbi, &cpc);
3687 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3688 sb->s_flags &= ~SB_RDONLY;
3690 kill_block_super(sb);
3693 static struct file_system_type f2fs_fs_type = {
3694 .owner = THIS_MODULE,
3696 .mount = f2fs_mount,
3697 .kill_sb = kill_f2fs_super,
3698 .fs_flags = FS_REQUIRES_DEV,
3700 MODULE_ALIAS_FS("f2fs");
3702 static int __init init_inodecache(void)
3704 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3705 sizeof(struct f2fs_inode_info), 0,
3706 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
3707 if (!f2fs_inode_cachep)
3712 static void destroy_inodecache(void)
3715 * Make sure all delayed rcu free inodes are flushed before we
3719 kmem_cache_destroy(f2fs_inode_cachep);
3722 static int __init init_f2fs_fs(void)
3726 if (PAGE_SIZE != F2FS_BLKSIZE) {
3727 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3728 PAGE_SIZE, F2FS_BLKSIZE);
3732 f2fs_build_trace_ios();
3734 err = init_inodecache();
3737 err = f2fs_create_node_manager_caches();
3739 goto free_inodecache;
3740 err = f2fs_create_segment_manager_caches();
3742 goto free_node_manager_caches;
3743 err = f2fs_create_checkpoint_caches();
3745 goto free_segment_manager_caches;
3746 err = f2fs_create_extent_cache();
3748 goto free_checkpoint_caches;
3749 err = f2fs_init_sysfs();
3751 goto free_extent_cache;
3752 err = register_shrinker(&f2fs_shrinker_info);
3755 err = register_filesystem(&f2fs_fs_type);
3758 f2fs_create_root_stats();
3759 err = f2fs_init_post_read_processing();
3761 goto free_root_stats;
3762 err = f2fs_init_bio_entry_cache();
3764 goto free_post_read;
3768 f2fs_destroy_post_read_processing();
3770 f2fs_destroy_root_stats();
3771 unregister_filesystem(&f2fs_fs_type);
3773 unregister_shrinker(&f2fs_shrinker_info);
3777 f2fs_destroy_extent_cache();
3778 free_checkpoint_caches:
3779 f2fs_destroy_checkpoint_caches();
3780 free_segment_manager_caches:
3781 f2fs_destroy_segment_manager_caches();
3782 free_node_manager_caches:
3783 f2fs_destroy_node_manager_caches();
3785 destroy_inodecache();
3790 static void __exit exit_f2fs_fs(void)
3792 f2fs_destroy_bio_entry_cache();
3793 f2fs_destroy_post_read_processing();
3794 f2fs_destroy_root_stats();
3795 unregister_filesystem(&f2fs_fs_type);
3796 unregister_shrinker(&f2fs_shrinker_info);
3798 f2fs_destroy_extent_cache();
3799 f2fs_destroy_checkpoint_caches();
3800 f2fs_destroy_segment_manager_caches();
3801 f2fs_destroy_node_manager_caches();
3802 destroy_inodecache();
3803 f2fs_destroy_trace_ios();
3806 module_init(init_f2fs_fs)
3807 module_exit(exit_f2fs_fs)
3809 MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3810 MODULE_DESCRIPTION("Flash Friendly File System");
3811 MODULE_LICENSE("GPL");