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>
34 #define CREATE_TRACE_POINTS
35 #include <trace/events/f2fs.h>
37 static struct kmem_cache *f2fs_inode_cachep;
39 #ifdef CONFIG_F2FS_FAULT_INJECTION
41 const char *f2fs_fault_name[FAULT_MAX] = {
42 [FAULT_KMALLOC] = "kmalloc",
43 [FAULT_KVMALLOC] = "kvmalloc",
44 [FAULT_PAGE_ALLOC] = "page alloc",
45 [FAULT_PAGE_GET] = "page get",
46 [FAULT_ALLOC_BIO] = "alloc bio",
47 [FAULT_ALLOC_NID] = "alloc nid",
48 [FAULT_ORPHAN] = "orphan",
49 [FAULT_BLOCK] = "no more block",
50 [FAULT_DIR_DEPTH] = "too big dir depth",
51 [FAULT_EVICT_INODE] = "evict_inode fail",
52 [FAULT_TRUNCATE] = "truncate fail",
53 [FAULT_READ_IO] = "read IO error",
54 [FAULT_CHECKPOINT] = "checkpoint error",
55 [FAULT_DISCARD] = "discard error",
56 [FAULT_WRITE_IO] = "write IO error",
59 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
62 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
65 atomic_set(&ffi->inject_ops, 0);
66 ffi->inject_rate = rate;
70 ffi->inject_type = type;
73 memset(ffi, 0, sizeof(struct f2fs_fault_info));
77 /* f2fs-wide shrinker description */
78 static struct shrinker f2fs_shrinker_info = {
79 .scan_objects = f2fs_shrink_scan,
80 .count_objects = f2fs_shrink_count,
81 .seeks = DEFAULT_SEEKS,
86 Opt_disable_roll_forward,
97 Opt_disable_ext_identify,
100 Opt_inline_xattr_size,
138 Opt_test_dummy_encryption,
143 static match_table_t f2fs_tokens = {
144 {Opt_gc_background, "background_gc=%s"},
145 {Opt_disable_roll_forward, "disable_roll_forward"},
146 {Opt_norecovery, "norecovery"},
147 {Opt_discard, "discard"},
148 {Opt_nodiscard, "nodiscard"},
149 {Opt_noheap, "no_heap"},
151 {Opt_user_xattr, "user_xattr"},
152 {Opt_nouser_xattr, "nouser_xattr"},
154 {Opt_noacl, "noacl"},
155 {Opt_active_logs, "active_logs=%u"},
156 {Opt_disable_ext_identify, "disable_ext_identify"},
157 {Opt_inline_xattr, "inline_xattr"},
158 {Opt_noinline_xattr, "noinline_xattr"},
159 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
160 {Opt_inline_data, "inline_data"},
161 {Opt_inline_dentry, "inline_dentry"},
162 {Opt_noinline_dentry, "noinline_dentry"},
163 {Opt_flush_merge, "flush_merge"},
164 {Opt_noflush_merge, "noflush_merge"},
165 {Opt_nobarrier, "nobarrier"},
166 {Opt_fastboot, "fastboot"},
167 {Opt_extent_cache, "extent_cache"},
168 {Opt_noextent_cache, "noextent_cache"},
169 {Opt_noinline_data, "noinline_data"},
170 {Opt_data_flush, "data_flush"},
171 {Opt_reserve_root, "reserve_root=%u"},
172 {Opt_resgid, "resgid=%u"},
173 {Opt_resuid, "resuid=%u"},
174 {Opt_mode, "mode=%s"},
175 {Opt_io_size_bits, "io_bits=%u"},
176 {Opt_fault_injection, "fault_injection=%u"},
177 {Opt_fault_type, "fault_type=%u"},
178 {Opt_lazytime, "lazytime"},
179 {Opt_nolazytime, "nolazytime"},
180 {Opt_quota, "quota"},
181 {Opt_noquota, "noquota"},
182 {Opt_usrquota, "usrquota"},
183 {Opt_grpquota, "grpquota"},
184 {Opt_prjquota, "prjquota"},
185 {Opt_usrjquota, "usrjquota=%s"},
186 {Opt_grpjquota, "grpjquota=%s"},
187 {Opt_prjjquota, "prjjquota=%s"},
188 {Opt_offusrjquota, "usrjquota="},
189 {Opt_offgrpjquota, "grpjquota="},
190 {Opt_offprjjquota, "prjjquota="},
191 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
192 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
193 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
194 {Opt_whint, "whint_mode=%s"},
195 {Opt_alloc, "alloc_mode=%s"},
196 {Opt_fsync, "fsync_mode=%s"},
197 {Opt_test_dummy_encryption, "test_dummy_encryption"},
198 {Opt_checkpoint, "checkpoint=%s"},
202 void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...)
204 struct va_format vaf;
210 printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf);
214 static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
216 block_t limit = (sbi->user_block_count << 1) / 1000;
219 if (test_opt(sbi, RESERVE_ROOT) &&
220 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
221 F2FS_OPTION(sbi).root_reserved_blocks = limit;
222 f2fs_msg(sbi->sb, KERN_INFO,
223 "Reduce reserved blocks for root = %u",
224 F2FS_OPTION(sbi).root_reserved_blocks);
226 if (!test_opt(sbi, RESERVE_ROOT) &&
227 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
228 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
229 !gid_eq(F2FS_OPTION(sbi).s_resgid,
230 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
231 f2fs_msg(sbi->sb, KERN_INFO,
232 "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
233 from_kuid_munged(&init_user_ns,
234 F2FS_OPTION(sbi).s_resuid),
235 from_kgid_munged(&init_user_ns,
236 F2FS_OPTION(sbi).s_resgid));
239 static void init_once(void *foo)
241 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
243 inode_init_once(&fi->vfs_inode);
247 static const char * const quotatypes[] = INITQFNAMES;
248 #define QTYPE2NAME(t) (quotatypes[t])
249 static int f2fs_set_qf_name(struct super_block *sb, int qtype,
252 struct f2fs_sb_info *sbi = F2FS_SB(sb);
256 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
257 f2fs_msg(sb, KERN_ERR,
258 "Cannot change journaled "
259 "quota options when quota turned on");
262 if (f2fs_sb_has_quota_ino(sbi)) {
263 f2fs_msg(sb, KERN_INFO,
264 "QUOTA feature is enabled, so ignore qf_name");
268 qname = match_strdup(args);
270 f2fs_msg(sb, KERN_ERR,
271 "Not enough memory for storing quotafile name");
274 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
275 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
278 f2fs_msg(sb, KERN_ERR,
279 "%s quota file already specified",
283 if (strchr(qname, '/')) {
284 f2fs_msg(sb, KERN_ERR,
285 "quotafile must be on filesystem root");
288 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
296 static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
298 struct f2fs_sb_info *sbi = F2FS_SB(sb);
300 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
301 f2fs_msg(sb, KERN_ERR, "Cannot change journaled quota options"
302 " when quota turned on");
305 kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
306 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
310 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
313 * We do the test below only for project quotas. 'usrquota' and
314 * 'grpquota' mount options are allowed even without quota feature
315 * to support legacy quotas in quota files.
317 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
318 f2fs_msg(sbi->sb, KERN_ERR, "Project quota feature not enabled. "
319 "Cannot enable project quota enforcement.");
322 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
323 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
324 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
325 if (test_opt(sbi, USRQUOTA) &&
326 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
327 clear_opt(sbi, USRQUOTA);
329 if (test_opt(sbi, GRPQUOTA) &&
330 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
331 clear_opt(sbi, GRPQUOTA);
333 if (test_opt(sbi, PRJQUOTA) &&
334 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
335 clear_opt(sbi, PRJQUOTA);
337 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
338 test_opt(sbi, PRJQUOTA)) {
339 f2fs_msg(sbi->sb, KERN_ERR, "old and new quota "
344 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
345 f2fs_msg(sbi->sb, KERN_ERR, "journaled quota format "
351 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
352 f2fs_msg(sbi->sb, KERN_INFO,
353 "QUOTA feature is enabled, so ignore jquota_fmt");
354 F2FS_OPTION(sbi).s_jquota_fmt = 0;
360 static int parse_options(struct super_block *sb, char *options)
362 struct f2fs_sb_info *sbi = F2FS_SB(sb);
363 substring_t args[MAX_OPT_ARGS];
375 while ((p = strsep(&options, ",")) != NULL) {
380 * Initialize args struct so we know whether arg was
381 * found; some options take optional arguments.
383 args[0].to = args[0].from = NULL;
384 token = match_token(p, f2fs_tokens, args);
387 case Opt_gc_background:
388 name = match_strdup(&args[0]);
392 if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
394 clear_opt(sbi, FORCE_FG_GC);
395 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
396 clear_opt(sbi, BG_GC);
397 clear_opt(sbi, FORCE_FG_GC);
398 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
400 set_opt(sbi, FORCE_FG_GC);
407 case Opt_disable_roll_forward:
408 set_opt(sbi, DISABLE_ROLL_FORWARD);
411 /* this option mounts f2fs with ro */
412 set_opt(sbi, DISABLE_ROLL_FORWARD);
413 if (!f2fs_readonly(sb))
417 set_opt(sbi, DISCARD);
420 if (f2fs_sb_has_blkzoned(sbi)) {
421 f2fs_msg(sb, KERN_WARNING,
422 "discard is required for zoned block devices");
425 clear_opt(sbi, DISCARD);
428 set_opt(sbi, NOHEAP);
431 clear_opt(sbi, NOHEAP);
433 #ifdef CONFIG_F2FS_FS_XATTR
435 set_opt(sbi, XATTR_USER);
437 case Opt_nouser_xattr:
438 clear_opt(sbi, XATTR_USER);
440 case Opt_inline_xattr:
441 set_opt(sbi, INLINE_XATTR);
443 case Opt_noinline_xattr:
444 clear_opt(sbi, INLINE_XATTR);
446 case Opt_inline_xattr_size:
447 if (args->from && match_int(args, &arg))
449 set_opt(sbi, INLINE_XATTR_SIZE);
450 F2FS_OPTION(sbi).inline_xattr_size = arg;
454 f2fs_msg(sb, KERN_INFO,
455 "user_xattr options not supported");
457 case Opt_nouser_xattr:
458 f2fs_msg(sb, KERN_INFO,
459 "nouser_xattr options not supported");
461 case Opt_inline_xattr:
462 f2fs_msg(sb, KERN_INFO,
463 "inline_xattr options not supported");
465 case Opt_noinline_xattr:
466 f2fs_msg(sb, KERN_INFO,
467 "noinline_xattr options not supported");
470 #ifdef CONFIG_F2FS_FS_POSIX_ACL
472 set_opt(sbi, POSIX_ACL);
475 clear_opt(sbi, POSIX_ACL);
479 f2fs_msg(sb, KERN_INFO, "acl options not supported");
482 f2fs_msg(sb, KERN_INFO, "noacl options not supported");
485 case Opt_active_logs:
486 if (args->from && match_int(args, &arg))
488 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
490 F2FS_OPTION(sbi).active_logs = arg;
492 case Opt_disable_ext_identify:
493 set_opt(sbi, DISABLE_EXT_IDENTIFY);
495 case Opt_inline_data:
496 set_opt(sbi, INLINE_DATA);
498 case Opt_inline_dentry:
499 set_opt(sbi, INLINE_DENTRY);
501 case Opt_noinline_dentry:
502 clear_opt(sbi, INLINE_DENTRY);
504 case Opt_flush_merge:
505 set_opt(sbi, FLUSH_MERGE);
507 case Opt_noflush_merge:
508 clear_opt(sbi, FLUSH_MERGE);
511 set_opt(sbi, NOBARRIER);
514 set_opt(sbi, FASTBOOT);
516 case Opt_extent_cache:
517 set_opt(sbi, EXTENT_CACHE);
519 case Opt_noextent_cache:
520 clear_opt(sbi, EXTENT_CACHE);
522 case Opt_noinline_data:
523 clear_opt(sbi, INLINE_DATA);
526 set_opt(sbi, DATA_FLUSH);
528 case Opt_reserve_root:
529 if (args->from && match_int(args, &arg))
531 if (test_opt(sbi, RESERVE_ROOT)) {
532 f2fs_msg(sb, KERN_INFO,
533 "Preserve previous reserve_root=%u",
534 F2FS_OPTION(sbi).root_reserved_blocks);
536 F2FS_OPTION(sbi).root_reserved_blocks = arg;
537 set_opt(sbi, RESERVE_ROOT);
541 if (args->from && match_int(args, &arg))
543 uid = make_kuid(current_user_ns(), arg);
544 if (!uid_valid(uid)) {
545 f2fs_msg(sb, KERN_ERR,
546 "Invalid uid value %d", arg);
549 F2FS_OPTION(sbi).s_resuid = uid;
552 if (args->from && match_int(args, &arg))
554 gid = make_kgid(current_user_ns(), arg);
555 if (!gid_valid(gid)) {
556 f2fs_msg(sb, KERN_ERR,
557 "Invalid gid value %d", arg);
560 F2FS_OPTION(sbi).s_resgid = gid;
563 name = match_strdup(&args[0]);
567 if (strlen(name) == 8 &&
568 !strncmp(name, "adaptive", 8)) {
569 if (f2fs_sb_has_blkzoned(sbi)) {
570 f2fs_msg(sb, KERN_WARNING,
571 "adaptive mode is not allowed with "
572 "zoned block device feature");
576 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
577 } else if (strlen(name) == 3 &&
578 !strncmp(name, "lfs", 3)) {
579 set_opt_mode(sbi, F2FS_MOUNT_LFS);
586 case Opt_io_size_bits:
587 if (args->from && match_int(args, &arg))
589 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
590 f2fs_msg(sb, KERN_WARNING,
591 "Not support %d, larger than %d",
592 1 << arg, BIO_MAX_PAGES);
595 F2FS_OPTION(sbi).write_io_size_bits = arg;
597 #ifdef CONFIG_F2FS_FAULT_INJECTION
598 case Opt_fault_injection:
599 if (args->from && match_int(args, &arg))
601 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
602 set_opt(sbi, FAULT_INJECTION);
606 if (args->from && match_int(args, &arg))
608 f2fs_build_fault_attr(sbi, 0, arg);
609 set_opt(sbi, FAULT_INJECTION);
612 case Opt_fault_injection:
613 f2fs_msg(sb, KERN_INFO,
614 "fault_injection options not supported");
618 f2fs_msg(sb, KERN_INFO,
619 "fault_type options not supported");
623 sb->s_flags |= SB_LAZYTIME;
626 sb->s_flags &= ~SB_LAZYTIME;
631 set_opt(sbi, USRQUOTA);
634 set_opt(sbi, GRPQUOTA);
637 set_opt(sbi, PRJQUOTA);
640 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
645 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
650 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
654 case Opt_offusrjquota:
655 ret = f2fs_clear_qf_name(sb, USRQUOTA);
659 case Opt_offgrpjquota:
660 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
664 case Opt_offprjjquota:
665 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
669 case Opt_jqfmt_vfsold:
670 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
672 case Opt_jqfmt_vfsv0:
673 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
675 case Opt_jqfmt_vfsv1:
676 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
679 clear_opt(sbi, QUOTA);
680 clear_opt(sbi, USRQUOTA);
681 clear_opt(sbi, GRPQUOTA);
682 clear_opt(sbi, PRJQUOTA);
692 case Opt_offusrjquota:
693 case Opt_offgrpjquota:
694 case Opt_offprjjquota:
695 case Opt_jqfmt_vfsold:
696 case Opt_jqfmt_vfsv0:
697 case Opt_jqfmt_vfsv1:
699 f2fs_msg(sb, KERN_INFO,
700 "quota operations not supported");
704 name = match_strdup(&args[0]);
707 if (strlen(name) == 10 &&
708 !strncmp(name, "user-based", 10)) {
709 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
710 } else if (strlen(name) == 3 &&
711 !strncmp(name, "off", 3)) {
712 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
713 } else if (strlen(name) == 8 &&
714 !strncmp(name, "fs-based", 8)) {
715 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
723 name = match_strdup(&args[0]);
727 if (strlen(name) == 7 &&
728 !strncmp(name, "default", 7)) {
729 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
730 } else if (strlen(name) == 5 &&
731 !strncmp(name, "reuse", 5)) {
732 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
740 name = match_strdup(&args[0]);
743 if (strlen(name) == 5 &&
744 !strncmp(name, "posix", 5)) {
745 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
746 } else if (strlen(name) == 6 &&
747 !strncmp(name, "strict", 6)) {
748 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
749 } else if (strlen(name) == 9 &&
750 !strncmp(name, "nobarrier", 9)) {
751 F2FS_OPTION(sbi).fsync_mode =
752 FSYNC_MODE_NOBARRIER;
759 case Opt_test_dummy_encryption:
760 #ifdef CONFIG_F2FS_FS_ENCRYPTION
761 if (!f2fs_sb_has_encrypt(sbi)) {
762 f2fs_msg(sb, KERN_ERR, "Encrypt feature is off");
766 F2FS_OPTION(sbi).test_dummy_encryption = true;
767 f2fs_msg(sb, KERN_INFO,
768 "Test dummy encryption mode enabled");
770 f2fs_msg(sb, KERN_INFO,
771 "Test dummy encryption mount option ignored");
775 name = match_strdup(&args[0]);
779 if (strlen(name) == 6 &&
780 !strncmp(name, "enable", 6)) {
781 clear_opt(sbi, DISABLE_CHECKPOINT);
782 } else if (strlen(name) == 7 &&
783 !strncmp(name, "disable", 7)) {
784 set_opt(sbi, DISABLE_CHECKPOINT);
792 f2fs_msg(sb, KERN_ERR,
793 "Unrecognized mount option \"%s\" or missing value",
799 if (f2fs_check_quota_options(sbi))
802 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
803 f2fs_msg(sbi->sb, KERN_INFO,
804 "Filesystem with quota feature cannot be mounted RDWR "
805 "without CONFIG_QUOTA");
808 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
809 f2fs_msg(sb, KERN_ERR,
810 "Filesystem with project quota feature cannot be "
811 "mounted RDWR without CONFIG_QUOTA");
816 if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
817 f2fs_msg(sb, KERN_ERR,
818 "Should set mode=lfs with %uKB-sized IO",
819 F2FS_IO_SIZE_KB(sbi));
823 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
824 int min_size, max_size;
826 if (!f2fs_sb_has_extra_attr(sbi) ||
827 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
828 f2fs_msg(sb, KERN_ERR,
829 "extra_attr or flexible_inline_xattr "
833 if (!test_opt(sbi, INLINE_XATTR)) {
834 f2fs_msg(sb, KERN_ERR,
835 "inline_xattr_size option should be "
836 "set with inline_xattr option");
840 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
841 max_size = DEF_ADDRS_PER_INODE -
842 F2FS_TOTAL_EXTRA_ATTR_SIZE / sizeof(__le32) -
843 DEF_INLINE_RESERVED_SIZE -
844 MIN_INLINE_DENTRY_SIZE / sizeof(__le32);
846 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
847 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
848 f2fs_msg(sb, KERN_ERR,
849 "inline xattr size is out of range: %d ~ %d",
855 if (test_opt(sbi, DISABLE_CHECKPOINT) && test_opt(sbi, LFS)) {
856 f2fs_msg(sb, KERN_ERR,
857 "LFS not compatible with checkpoint=disable\n");
861 /* Not pass down write hints if the number of active logs is lesser
862 * than NR_CURSEG_TYPE.
864 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
865 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
869 static struct inode *f2fs_alloc_inode(struct super_block *sb)
871 struct f2fs_inode_info *fi;
873 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
877 init_once((void *) fi);
879 /* Initialize f2fs-specific inode info */
880 atomic_set(&fi->dirty_pages, 0);
881 init_rwsem(&fi->i_sem);
882 INIT_LIST_HEAD(&fi->dirty_list);
883 INIT_LIST_HEAD(&fi->gdirty_list);
884 INIT_LIST_HEAD(&fi->inmem_ilist);
885 INIT_LIST_HEAD(&fi->inmem_pages);
886 mutex_init(&fi->inmem_lock);
887 init_rwsem(&fi->i_gc_rwsem[READ]);
888 init_rwsem(&fi->i_gc_rwsem[WRITE]);
889 init_rwsem(&fi->i_mmap_sem);
890 init_rwsem(&fi->i_xattr_sem);
892 /* Will be used by directory only */
893 fi->i_dir_level = F2FS_SB(sb)->dir_level;
895 return &fi->vfs_inode;
898 static int f2fs_drop_inode(struct inode *inode)
902 * This is to avoid a deadlock condition like below.
903 * writeback_single_inode(inode)
904 * - f2fs_write_data_page
905 * - f2fs_gc -> iput -> evict
906 * - inode_wait_for_writeback(inode)
908 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
909 if (!inode->i_nlink && !is_bad_inode(inode)) {
910 /* to avoid evict_inode call simultaneously */
911 atomic_inc(&inode->i_count);
912 spin_unlock(&inode->i_lock);
914 /* some remained atomic pages should discarded */
915 if (f2fs_is_atomic_file(inode))
916 f2fs_drop_inmem_pages(inode);
918 /* should remain fi->extent_tree for writepage */
919 f2fs_destroy_extent_node(inode);
921 sb_start_intwrite(inode->i_sb);
922 f2fs_i_size_write(inode, 0);
924 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
925 inode, NULL, 0, DATA);
926 truncate_inode_pages_final(inode->i_mapping);
928 if (F2FS_HAS_BLOCKS(inode))
929 f2fs_truncate(inode);
931 sb_end_intwrite(inode->i_sb);
933 spin_lock(&inode->i_lock);
934 atomic_dec(&inode->i_count);
936 trace_f2fs_drop_inode(inode, 0);
939 ret = generic_drop_inode(inode);
940 trace_f2fs_drop_inode(inode, ret);
944 int f2fs_inode_dirtied(struct inode *inode, bool sync)
946 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
949 spin_lock(&sbi->inode_lock[DIRTY_META]);
950 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
953 set_inode_flag(inode, FI_DIRTY_INODE);
954 stat_inc_dirty_inode(sbi, DIRTY_META);
956 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
957 list_add_tail(&F2FS_I(inode)->gdirty_list,
958 &sbi->inode_list[DIRTY_META]);
959 inc_page_count(sbi, F2FS_DIRTY_IMETA);
961 spin_unlock(&sbi->inode_lock[DIRTY_META]);
965 void f2fs_inode_synced(struct inode *inode)
967 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
969 spin_lock(&sbi->inode_lock[DIRTY_META]);
970 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
971 spin_unlock(&sbi->inode_lock[DIRTY_META]);
974 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
975 list_del_init(&F2FS_I(inode)->gdirty_list);
976 dec_page_count(sbi, F2FS_DIRTY_IMETA);
978 clear_inode_flag(inode, FI_DIRTY_INODE);
979 clear_inode_flag(inode, FI_AUTO_RECOVER);
980 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
981 spin_unlock(&sbi->inode_lock[DIRTY_META]);
985 * f2fs_dirty_inode() is called from __mark_inode_dirty()
987 * We should call set_dirty_inode to write the dirty inode through write_inode.
989 static void f2fs_dirty_inode(struct inode *inode, int flags)
991 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
993 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
994 inode->i_ino == F2FS_META_INO(sbi))
997 if (flags == I_DIRTY_TIME)
1000 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1001 clear_inode_flag(inode, FI_AUTO_RECOVER);
1003 f2fs_inode_dirtied(inode, false);
1006 static void f2fs_i_callback(struct rcu_head *head)
1008 struct inode *inode = container_of(head, struct inode, i_rcu);
1009 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1012 static void f2fs_destroy_inode(struct inode *inode)
1014 call_rcu(&inode->i_rcu, f2fs_i_callback);
1017 static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1019 percpu_counter_destroy(&sbi->alloc_valid_block_count);
1020 percpu_counter_destroy(&sbi->total_valid_inode_count);
1023 static void destroy_device_list(struct f2fs_sb_info *sbi)
1027 for (i = 0; i < sbi->s_ndevs; i++) {
1028 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1029 #ifdef CONFIG_BLK_DEV_ZONED
1030 kvfree(FDEV(i).blkz_type);
1036 static void f2fs_put_super(struct super_block *sb)
1038 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1042 f2fs_quota_off_umount(sb);
1044 /* prevent remaining shrinker jobs */
1045 mutex_lock(&sbi->umount_mutex);
1048 * We don't need to do checkpoint when superblock is clean.
1049 * But, the previous checkpoint was not done by umount, it needs to do
1050 * clean checkpoint again.
1052 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1053 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
1054 struct cp_control cpc = {
1055 .reason = CP_UMOUNT,
1057 f2fs_write_checkpoint(sbi, &cpc);
1060 /* be sure to wait for any on-going discard commands */
1061 dropped = f2fs_issue_discard_timeout(sbi);
1063 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1064 !sbi->discard_blks && !dropped) {
1065 struct cp_control cpc = {
1066 .reason = CP_UMOUNT | CP_TRIMMED,
1068 f2fs_write_checkpoint(sbi, &cpc);
1072 * normally superblock is clean, so we need to release this.
1073 * In addition, EIO will skip do checkpoint, we need this as well.
1075 f2fs_release_ino_entry(sbi, true);
1077 f2fs_leave_shrinker(sbi);
1078 mutex_unlock(&sbi->umount_mutex);
1080 /* our cp_error case, we can wait for any writeback page */
1081 f2fs_flush_merged_writes(sbi);
1083 f2fs_wait_on_all_pages_writeback(sbi);
1085 f2fs_bug_on(sbi, sbi->fsync_node_num);
1087 iput(sbi->node_inode);
1088 sbi->node_inode = NULL;
1090 iput(sbi->meta_inode);
1091 sbi->meta_inode = NULL;
1094 * iput() can update stat information, if f2fs_write_checkpoint()
1095 * above failed with error.
1097 f2fs_destroy_stats(sbi);
1099 /* destroy f2fs internal modules */
1100 f2fs_destroy_node_manager(sbi);
1101 f2fs_destroy_segment_manager(sbi);
1105 f2fs_unregister_sysfs(sbi);
1107 sb->s_fs_info = NULL;
1108 if (sbi->s_chksum_driver)
1109 crypto_free_shash(sbi->s_chksum_driver);
1110 kvfree(sbi->raw_super);
1112 destroy_device_list(sbi);
1113 mempool_destroy(sbi->write_io_dummy);
1115 for (i = 0; i < MAXQUOTAS; i++)
1116 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
1118 destroy_percpu_info(sbi);
1119 for (i = 0; i < NR_PAGE_TYPE; i++)
1120 kvfree(sbi->write_io[i]);
1124 int f2fs_sync_fs(struct super_block *sb, int sync)
1126 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1129 if (unlikely(f2fs_cp_error(sbi)))
1131 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1134 trace_f2fs_sync_fs(sb, sync);
1136 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1140 struct cp_control cpc;
1142 cpc.reason = __get_cp_reason(sbi);
1144 mutex_lock(&sbi->gc_mutex);
1145 err = f2fs_write_checkpoint(sbi, &cpc);
1146 mutex_unlock(&sbi->gc_mutex);
1148 f2fs_trace_ios(NULL, 1);
1153 static int f2fs_freeze(struct super_block *sb)
1155 if (f2fs_readonly(sb))
1158 /* IO error happened before */
1159 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1162 /* must be clean, since sync_filesystem() was already called */
1163 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1168 static int f2fs_unfreeze(struct super_block *sb)
1174 static int f2fs_statfs_project(struct super_block *sb,
1175 kprojid_t projid, struct kstatfs *buf)
1178 struct dquot *dquot;
1182 qid = make_kqid_projid(projid);
1183 dquot = dqget(sb, qid);
1185 return PTR_ERR(dquot);
1186 spin_lock(&dquot->dq_dqb_lock);
1188 limit = (dquot->dq_dqb.dqb_bsoftlimit ?
1189 dquot->dq_dqb.dqb_bsoftlimit :
1190 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
1191 if (limit && buf->f_blocks > limit) {
1192 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1193 buf->f_blocks = limit;
1194 buf->f_bfree = buf->f_bavail =
1195 (buf->f_blocks > curblock) ?
1196 (buf->f_blocks - curblock) : 0;
1199 limit = dquot->dq_dqb.dqb_isoftlimit ?
1200 dquot->dq_dqb.dqb_isoftlimit :
1201 dquot->dq_dqb.dqb_ihardlimit;
1202 if (limit && buf->f_files > limit) {
1203 buf->f_files = limit;
1205 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1206 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1209 spin_unlock(&dquot->dq_dqb_lock);
1215 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1217 struct super_block *sb = dentry->d_sb;
1218 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1219 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1220 block_t total_count, user_block_count, start_count;
1221 u64 avail_node_count;
1223 total_count = le64_to_cpu(sbi->raw_super->block_count);
1224 user_block_count = sbi->user_block_count;
1225 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
1226 buf->f_type = F2FS_SUPER_MAGIC;
1227 buf->f_bsize = sbi->blocksize;
1229 buf->f_blocks = total_count - start_count;
1230 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
1231 sbi->current_reserved_blocks;
1232 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1235 buf->f_bfree -= sbi->unusable_block_count;
1237 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1238 buf->f_bavail = buf->f_bfree -
1239 F2FS_OPTION(sbi).root_reserved_blocks;
1243 avail_node_count = sbi->total_node_count - sbi->nquota_files -
1244 F2FS_RESERVED_NODE_NUM;
1246 if (avail_node_count > user_block_count) {
1247 buf->f_files = user_block_count;
1248 buf->f_ffree = buf->f_bavail;
1250 buf->f_files = avail_node_count;
1251 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1255 buf->f_namelen = F2FS_NAME_LEN;
1256 buf->f_fsid.val[0] = (u32)id;
1257 buf->f_fsid.val[1] = (u32)(id >> 32);
1260 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1261 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1262 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1268 static inline void f2fs_show_quota_options(struct seq_file *seq,
1269 struct super_block *sb)
1272 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1274 if (F2FS_OPTION(sbi).s_jquota_fmt) {
1277 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
1288 seq_printf(seq, ",jqfmt=%s", fmtname);
1291 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1292 seq_show_option(seq, "usrjquota",
1293 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
1295 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1296 seq_show_option(seq, "grpjquota",
1297 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
1299 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1300 seq_show_option(seq, "prjjquota",
1301 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
1305 static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1307 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1309 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1310 if (test_opt(sbi, FORCE_FG_GC))
1311 seq_printf(seq, ",background_gc=%s", "sync");
1313 seq_printf(seq, ",background_gc=%s", "on");
1315 seq_printf(seq, ",background_gc=%s", "off");
1317 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1318 seq_puts(seq, ",disable_roll_forward");
1319 if (test_opt(sbi, DISCARD))
1320 seq_puts(seq, ",discard");
1321 if (test_opt(sbi, NOHEAP))
1322 seq_puts(seq, ",no_heap");
1324 seq_puts(seq, ",heap");
1325 #ifdef CONFIG_F2FS_FS_XATTR
1326 if (test_opt(sbi, XATTR_USER))
1327 seq_puts(seq, ",user_xattr");
1329 seq_puts(seq, ",nouser_xattr");
1330 if (test_opt(sbi, INLINE_XATTR))
1331 seq_puts(seq, ",inline_xattr");
1333 seq_puts(seq, ",noinline_xattr");
1334 if (test_opt(sbi, INLINE_XATTR_SIZE))
1335 seq_printf(seq, ",inline_xattr_size=%u",
1336 F2FS_OPTION(sbi).inline_xattr_size);
1338 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1339 if (test_opt(sbi, POSIX_ACL))
1340 seq_puts(seq, ",acl");
1342 seq_puts(seq, ",noacl");
1344 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
1345 seq_puts(seq, ",disable_ext_identify");
1346 if (test_opt(sbi, INLINE_DATA))
1347 seq_puts(seq, ",inline_data");
1349 seq_puts(seq, ",noinline_data");
1350 if (test_opt(sbi, INLINE_DENTRY))
1351 seq_puts(seq, ",inline_dentry");
1353 seq_puts(seq, ",noinline_dentry");
1354 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
1355 seq_puts(seq, ",flush_merge");
1356 if (test_opt(sbi, NOBARRIER))
1357 seq_puts(seq, ",nobarrier");
1358 if (test_opt(sbi, FASTBOOT))
1359 seq_puts(seq, ",fastboot");
1360 if (test_opt(sbi, EXTENT_CACHE))
1361 seq_puts(seq, ",extent_cache");
1363 seq_puts(seq, ",noextent_cache");
1364 if (test_opt(sbi, DATA_FLUSH))
1365 seq_puts(seq, ",data_flush");
1367 seq_puts(seq, ",mode=");
1368 if (test_opt(sbi, ADAPTIVE))
1369 seq_puts(seq, "adaptive");
1370 else if (test_opt(sbi, LFS))
1371 seq_puts(seq, "lfs");
1372 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
1373 if (test_opt(sbi, RESERVE_ROOT))
1374 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
1375 F2FS_OPTION(sbi).root_reserved_blocks,
1376 from_kuid_munged(&init_user_ns,
1377 F2FS_OPTION(sbi).s_resuid),
1378 from_kgid_munged(&init_user_ns,
1379 F2FS_OPTION(sbi).s_resgid));
1380 if (F2FS_IO_SIZE_BITS(sbi))
1381 seq_printf(seq, ",io_bits=%u",
1382 F2FS_OPTION(sbi).write_io_size_bits);
1383 #ifdef CONFIG_F2FS_FAULT_INJECTION
1384 if (test_opt(sbi, FAULT_INJECTION)) {
1385 seq_printf(seq, ",fault_injection=%u",
1386 F2FS_OPTION(sbi).fault_info.inject_rate);
1387 seq_printf(seq, ",fault_type=%u",
1388 F2FS_OPTION(sbi).fault_info.inject_type);
1392 if (test_opt(sbi, QUOTA))
1393 seq_puts(seq, ",quota");
1394 if (test_opt(sbi, USRQUOTA))
1395 seq_puts(seq, ",usrquota");
1396 if (test_opt(sbi, GRPQUOTA))
1397 seq_puts(seq, ",grpquota");
1398 if (test_opt(sbi, PRJQUOTA))
1399 seq_puts(seq, ",prjquota");
1401 f2fs_show_quota_options(seq, sbi->sb);
1402 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
1403 seq_printf(seq, ",whint_mode=%s", "user-based");
1404 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
1405 seq_printf(seq, ",whint_mode=%s", "fs-based");
1406 #ifdef CONFIG_F2FS_FS_ENCRYPTION
1407 if (F2FS_OPTION(sbi).test_dummy_encryption)
1408 seq_puts(seq, ",test_dummy_encryption");
1411 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
1412 seq_printf(seq, ",alloc_mode=%s", "default");
1413 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
1414 seq_printf(seq, ",alloc_mode=%s", "reuse");
1416 if (test_opt(sbi, DISABLE_CHECKPOINT))
1417 seq_puts(seq, ",checkpoint=disable");
1419 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
1420 seq_printf(seq, ",fsync_mode=%s", "posix");
1421 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
1422 seq_printf(seq, ",fsync_mode=%s", "strict");
1423 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1424 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
1428 static void default_options(struct f2fs_sb_info *sbi)
1430 /* init some FS parameters */
1431 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1432 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1433 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1434 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1435 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
1436 F2FS_OPTION(sbi).test_dummy_encryption = false;
1437 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1438 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
1440 set_opt(sbi, BG_GC);
1441 set_opt(sbi, INLINE_XATTR);
1442 set_opt(sbi, INLINE_DATA);
1443 set_opt(sbi, INLINE_DENTRY);
1444 set_opt(sbi, EXTENT_CACHE);
1445 set_opt(sbi, NOHEAP);
1446 clear_opt(sbi, DISABLE_CHECKPOINT);
1447 sbi->sb->s_flags |= SB_LAZYTIME;
1448 set_opt(sbi, FLUSH_MERGE);
1449 set_opt(sbi, DISCARD);
1450 if (f2fs_sb_has_blkzoned(sbi))
1451 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1453 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
1455 #ifdef CONFIG_F2FS_FS_XATTR
1456 set_opt(sbi, XATTR_USER);
1458 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1459 set_opt(sbi, POSIX_ACL);
1462 f2fs_build_fault_attr(sbi, 0, 0);
1466 static int f2fs_enable_quotas(struct super_block *sb);
1469 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1471 unsigned int s_flags = sbi->sb->s_flags;
1472 struct cp_control cpc;
1476 if (s_flags & SB_RDONLY) {
1477 f2fs_msg(sbi->sb, KERN_ERR,
1478 "checkpoint=disable on readonly fs");
1481 sbi->sb->s_flags |= SB_ACTIVE;
1483 f2fs_update_time(sbi, DISABLE_TIME);
1485 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
1486 mutex_lock(&sbi->gc_mutex);
1487 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1488 if (err == -ENODATA) {
1492 if (err && err != -EAGAIN)
1496 ret = sync_filesystem(sbi->sb);
1498 err = ret ? ret: err;
1502 if (f2fs_disable_cp_again(sbi)) {
1507 mutex_lock(&sbi->gc_mutex);
1508 cpc.reason = CP_PAUSE;
1509 set_sbi_flag(sbi, SBI_CP_DISABLED);
1510 f2fs_write_checkpoint(sbi, &cpc);
1512 sbi->unusable_block_count = 0;
1513 mutex_unlock(&sbi->gc_mutex);
1515 sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */
1519 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1521 mutex_lock(&sbi->gc_mutex);
1522 f2fs_dirty_to_prefree(sbi);
1524 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1525 set_sbi_flag(sbi, SBI_IS_DIRTY);
1526 mutex_unlock(&sbi->gc_mutex);
1528 f2fs_sync_fs(sbi->sb, 1);
1531 static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1533 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1534 struct f2fs_mount_info org_mount_opt;
1535 unsigned long old_sb_flags;
1537 bool need_restart_gc = false;
1538 bool need_stop_gc = false;
1539 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
1540 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1541 bool checkpoint_changed;
1547 * Save the old mount options in case we
1548 * need to restore them.
1550 org_mount_opt = sbi->mount_opt;
1551 old_sb_flags = sb->s_flags;
1554 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
1555 for (i = 0; i < MAXQUOTAS; i++) {
1556 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1557 org_mount_opt.s_qf_names[i] =
1558 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1560 if (!org_mount_opt.s_qf_names[i]) {
1561 for (j = 0; j < i; j++)
1562 kvfree(org_mount_opt.s_qf_names[j]);
1566 org_mount_opt.s_qf_names[i] = NULL;
1571 /* recover superblocks we couldn't write due to previous RO mount */
1572 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
1573 err = f2fs_commit_super(sbi, false);
1574 f2fs_msg(sb, KERN_INFO,
1575 "Try to recover all the superblocks, ret: %d", err);
1577 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1580 default_options(sbi);
1582 /* parse mount options */
1583 err = parse_options(sb, data);
1586 checkpoint_changed =
1587 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
1590 * Previous and new state of filesystem is RO,
1591 * so skip checking GC and FLUSH_MERGE conditions.
1593 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
1597 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
1598 err = dquot_suspend(sb, -1);
1601 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
1602 /* dquot_resume needs RW */
1603 sb->s_flags &= ~SB_RDONLY;
1604 if (sb_any_quota_suspended(sb)) {
1605 dquot_resume(sb, -1);
1606 } else if (f2fs_sb_has_quota_ino(sbi)) {
1607 err = f2fs_enable_quotas(sb);
1613 /* disallow enable/disable extent_cache dynamically */
1614 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1616 f2fs_msg(sbi->sb, KERN_WARNING,
1617 "switch extent_cache option is not allowed");
1621 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1623 f2fs_msg(sbi->sb, KERN_WARNING,
1624 "disabling checkpoint not compatible with read-only");
1629 * We stop the GC thread if FS is mounted as RO
1630 * or if background_gc = off is passed in mount
1631 * option. Also sync the filesystem.
1633 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
1634 if (sbi->gc_thread) {
1635 f2fs_stop_gc_thread(sbi);
1636 need_restart_gc = true;
1638 } else if (!sbi->gc_thread) {
1639 err = f2fs_start_gc_thread(sbi);
1642 need_stop_gc = true;
1645 if (*flags & SB_RDONLY ||
1646 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
1647 writeback_inodes_sb(sb, WB_REASON_SYNC);
1650 set_sbi_flag(sbi, SBI_IS_DIRTY);
1651 set_sbi_flag(sbi, SBI_IS_CLOSE);
1652 f2fs_sync_fs(sb, 1);
1653 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1656 if (checkpoint_changed) {
1657 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1658 err = f2fs_disable_checkpoint(sbi);
1662 f2fs_enable_checkpoint(sbi);
1667 * We stop issue flush thread if FS is mounted as RO
1668 * or if flush_merge is not passed in mount option.
1670 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
1671 clear_opt(sbi, FLUSH_MERGE);
1672 f2fs_destroy_flush_cmd_control(sbi, false);
1674 err = f2fs_create_flush_cmd_control(sbi);
1680 /* Release old quota file names */
1681 for (i = 0; i < MAXQUOTAS; i++)
1682 kvfree(org_mount_opt.s_qf_names[i]);
1684 /* Update the POSIXACL Flag */
1685 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1686 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
1688 limit_reserve_root(sbi);
1689 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
1692 if (need_restart_gc) {
1693 if (f2fs_start_gc_thread(sbi))
1694 f2fs_msg(sbi->sb, KERN_WARNING,
1695 "background gc thread has stopped");
1696 } else if (need_stop_gc) {
1697 f2fs_stop_gc_thread(sbi);
1701 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
1702 for (i = 0; i < MAXQUOTAS; i++) {
1703 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
1704 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
1707 sbi->mount_opt = org_mount_opt;
1708 sb->s_flags = old_sb_flags;
1713 /* Read data from quotafile */
1714 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1715 size_t len, loff_t off)
1717 struct inode *inode = sb_dqopt(sb)->files[type];
1718 struct address_space *mapping = inode->i_mapping;
1719 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1720 int offset = off & (sb->s_blocksize - 1);
1723 loff_t i_size = i_size_read(inode);
1730 if (off + len > i_size)
1733 while (toread > 0) {
1734 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1736 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
1738 if (PTR_ERR(page) == -ENOMEM) {
1739 congestion_wait(BLK_RW_ASYNC, HZ/50);
1742 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
1743 return PTR_ERR(page);
1748 if (unlikely(page->mapping != mapping)) {
1749 f2fs_put_page(page, 1);
1752 if (unlikely(!PageUptodate(page))) {
1753 f2fs_put_page(page, 1);
1754 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
1758 kaddr = kmap_atomic(page);
1759 memcpy(data, kaddr + offset, tocopy);
1760 kunmap_atomic(kaddr);
1761 f2fs_put_page(page, 1);
1771 /* Write to quotafile */
1772 static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1773 const char *data, size_t len, loff_t off)
1775 struct inode *inode = sb_dqopt(sb)->files[type];
1776 struct address_space *mapping = inode->i_mapping;
1777 const struct address_space_operations *a_ops = mapping->a_ops;
1778 int offset = off & (sb->s_blocksize - 1);
1779 size_t towrite = len;
1785 while (towrite > 0) {
1786 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1789 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1791 if (unlikely(err)) {
1792 if (err == -ENOMEM) {
1793 congestion_wait(BLK_RW_ASYNC, HZ/50);
1796 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
1800 kaddr = kmap_atomic(page);
1801 memcpy(kaddr + offset, data, tocopy);
1802 kunmap_atomic(kaddr);
1803 flush_dcache_page(page);
1805 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1816 inode->i_mtime = inode->i_ctime = current_time(inode);
1817 f2fs_mark_inode_dirty_sync(inode, false);
1818 return len - towrite;
1821 static struct dquot **f2fs_get_dquots(struct inode *inode)
1823 return F2FS_I(inode)->i_dquot;
1826 static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1828 return &F2FS_I(inode)->i_reserved_quota;
1831 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1833 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
1834 f2fs_msg(sbi->sb, KERN_ERR,
1835 "quota sysfile may be corrupted, skip loading it");
1839 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1840 F2FS_OPTION(sbi).s_jquota_fmt, type);
1843 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
1848 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
1849 err = f2fs_enable_quotas(sbi->sb);
1851 f2fs_msg(sbi->sb, KERN_ERR,
1852 "Cannot turn on quota_ino: %d", err);
1858 for (i = 0; i < MAXQUOTAS; i++) {
1859 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1860 err = f2fs_quota_on_mount(sbi, i);
1865 f2fs_msg(sbi->sb, KERN_ERR,
1866 "Cannot turn on quotas: %d on %d", err, i);
1872 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1875 struct inode *qf_inode;
1876 unsigned long qf_inum;
1879 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
1881 qf_inum = f2fs_qf_ino(sb, type);
1885 qf_inode = f2fs_iget(sb, qf_inum);
1886 if (IS_ERR(qf_inode)) {
1887 f2fs_msg(sb, KERN_ERR,
1888 "Bad quota inode %u:%lu", type, qf_inum);
1889 return PTR_ERR(qf_inode);
1892 /* Don't account quota for quota files to avoid recursion */
1893 qf_inode->i_flags |= S_NOQUOTA;
1894 err = dquot_enable(qf_inode, type, format_id, flags);
1899 static int f2fs_enable_quotas(struct super_block *sb)
1902 unsigned long qf_inum;
1903 bool quota_mopt[MAXQUOTAS] = {
1904 test_opt(F2FS_SB(sb), USRQUOTA),
1905 test_opt(F2FS_SB(sb), GRPQUOTA),
1906 test_opt(F2FS_SB(sb), PRJQUOTA),
1909 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
1910 f2fs_msg(sb, KERN_ERR,
1911 "quota file may be corrupted, skip loading it");
1915 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1917 for (type = 0; type < MAXQUOTAS; type++) {
1918 qf_inum = f2fs_qf_ino(sb, type);
1920 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1921 DQUOT_USAGE_ENABLED |
1922 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1924 f2fs_msg(sb, KERN_ERR,
1925 "Failed to enable quota tracking "
1926 "(type=%d, err=%d). Please run "
1927 "fsck to fix.", type, err);
1928 for (type--; type >= 0; type--)
1929 dquot_quota_off(sb, type);
1930 set_sbi_flag(F2FS_SB(sb),
1931 SBI_QUOTA_NEED_REPAIR);
1939 int f2fs_quota_sync(struct super_block *sb, int type)
1941 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1942 struct quota_info *dqopt = sb_dqopt(sb);
1946 ret = dquot_writeback_dquots(sb, type);
1951 * Now when everything is written we can discard the pagecache so
1952 * that userspace sees the changes.
1954 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
1955 struct address_space *mapping;
1957 if (type != -1 && cnt != type)
1959 if (!sb_has_quota_active(sb, cnt))
1962 mapping = dqopt->files[cnt]->i_mapping;
1964 ret = filemap_fdatawrite(mapping);
1968 /* if we are using journalled quota */
1969 if (is_journalled_quota(sbi))
1972 ret = filemap_fdatawait(mapping);
1974 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
1976 inode_lock(dqopt->files[cnt]);
1977 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
1978 inode_unlock(dqopt->files[cnt]);
1982 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
1986 static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
1987 const struct path *path)
1989 struct inode *inode;
1992 err = f2fs_quota_sync(sb, type);
1996 err = dquot_quota_on(sb, type, format_id, path);
2000 inode = d_inode(path->dentry);
2003 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
2004 f2fs_set_inode_flags(inode);
2005 inode_unlock(inode);
2006 f2fs_mark_inode_dirty_sync(inode, false);
2011 static int f2fs_quota_off(struct super_block *sb, int type)
2013 struct inode *inode = sb_dqopt(sb)->files[type];
2016 if (!inode || !igrab(inode))
2017 return dquot_quota_off(sb, type);
2019 err = f2fs_quota_sync(sb, type);
2023 err = dquot_quota_off(sb, type);
2024 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
2028 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
2029 f2fs_set_inode_flags(inode);
2030 inode_unlock(inode);
2031 f2fs_mark_inode_dirty_sync(inode, false);
2037 void f2fs_quota_off_umount(struct super_block *sb)
2042 for (type = 0; type < MAXQUOTAS; type++) {
2043 err = f2fs_quota_off(sb, type);
2045 int ret = dquot_quota_off(sb, type);
2047 f2fs_msg(sb, KERN_ERR,
2048 "Fail to turn off disk quota "
2049 "(type: %d, err: %d, ret:%d), Please "
2050 "run fsck to fix it.", type, err, ret);
2051 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2055 * In case of checkpoint=disable, we must flush quota blocks.
2056 * This can cause NULL exception for node_inode in end_io, since
2057 * put_super already dropped it.
2059 sync_filesystem(sb);
2062 static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2064 struct quota_info *dqopt = sb_dqopt(sb);
2067 for (type = 0; type < MAXQUOTAS; type++) {
2068 if (!dqopt->files[type])
2070 f2fs_inode_synced(dqopt->files[type]);
2074 static int f2fs_dquot_commit(struct dquot *dquot)
2078 ret = dquot_commit(dquot);
2080 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
2084 static int f2fs_dquot_acquire(struct dquot *dquot)
2088 ret = dquot_acquire(dquot);
2090 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
2095 static int f2fs_dquot_release(struct dquot *dquot)
2099 ret = dquot_release(dquot);
2101 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
2105 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2107 struct super_block *sb = dquot->dq_sb;
2108 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2111 ret = dquot_mark_dquot_dirty(dquot);
2113 /* if we are using journalled quota */
2114 if (is_journalled_quota(sbi))
2115 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2120 static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2124 ret = dquot_commit_info(sb, type);
2126 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2130 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
2132 *projid = F2FS_I(inode)->i_projid;
2136 static const struct dquot_operations f2fs_quota_operations = {
2137 .get_reserved_space = f2fs_get_reserved_space,
2138 .write_dquot = f2fs_dquot_commit,
2139 .acquire_dquot = f2fs_dquot_acquire,
2140 .release_dquot = f2fs_dquot_release,
2141 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2142 .write_info = f2fs_dquot_commit_info,
2143 .alloc_dquot = dquot_alloc,
2144 .destroy_dquot = dquot_destroy,
2145 .get_projid = f2fs_get_projid,
2146 .get_next_id = dquot_get_next_id,
2149 static const struct quotactl_ops f2fs_quotactl_ops = {
2150 .quota_on = f2fs_quota_on,
2151 .quota_off = f2fs_quota_off,
2152 .quota_sync = f2fs_quota_sync,
2153 .get_state = dquot_get_state,
2154 .set_info = dquot_set_dqinfo,
2155 .get_dqblk = dquot_get_dqblk,
2156 .set_dqblk = dquot_set_dqblk,
2157 .get_nextdqblk = dquot_get_next_dqblk,
2160 int f2fs_quota_sync(struct super_block *sb, int type)
2165 void f2fs_quota_off_umount(struct super_block *sb)
2170 static const struct super_operations f2fs_sops = {
2171 .alloc_inode = f2fs_alloc_inode,
2172 .drop_inode = f2fs_drop_inode,
2173 .destroy_inode = f2fs_destroy_inode,
2174 .write_inode = f2fs_write_inode,
2175 .dirty_inode = f2fs_dirty_inode,
2176 .show_options = f2fs_show_options,
2178 .quota_read = f2fs_quota_read,
2179 .quota_write = f2fs_quota_write,
2180 .get_dquots = f2fs_get_dquots,
2182 .evict_inode = f2fs_evict_inode,
2183 .put_super = f2fs_put_super,
2184 .sync_fs = f2fs_sync_fs,
2185 .freeze_fs = f2fs_freeze,
2186 .unfreeze_fs = f2fs_unfreeze,
2187 .statfs = f2fs_statfs,
2188 .remount_fs = f2fs_remount,
2191 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2192 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2194 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2195 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2199 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2202 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2205 * Encrypting the root directory is not allowed because fsck
2206 * expects lost+found directory to exist and remain unencrypted
2207 * if LOST_FOUND feature is enabled.
2210 if (f2fs_sb_has_lost_found(sbi) &&
2211 inode->i_ino == F2FS_ROOT_INO(sbi))
2214 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2215 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2216 ctx, len, fs_data, XATTR_CREATE);
2219 static bool f2fs_dummy_context(struct inode *inode)
2221 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2224 static const struct fscrypt_operations f2fs_cryptops = {
2225 .key_prefix = "f2fs:",
2226 .get_context = f2fs_get_context,
2227 .set_context = f2fs_set_context,
2228 .dummy_context = f2fs_dummy_context,
2229 .empty_dir = f2fs_empty_dir,
2230 .max_namelen = F2FS_NAME_LEN,
2234 static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2235 u64 ino, u32 generation)
2237 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2238 struct inode *inode;
2240 if (f2fs_check_nid_range(sbi, ino))
2241 return ERR_PTR(-ESTALE);
2244 * f2fs_iget isn't quite right if the inode is currently unallocated!
2245 * However f2fs_iget currently does appropriate checks to handle stale
2246 * inodes so everything is OK.
2248 inode = f2fs_iget(sb, ino);
2250 return ERR_CAST(inode);
2251 if (unlikely(generation && inode->i_generation != generation)) {
2252 /* we didn't find the right inode.. */
2254 return ERR_PTR(-ESTALE);
2259 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2260 int fh_len, int fh_type)
2262 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2263 f2fs_nfs_get_inode);
2266 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2267 int fh_len, int fh_type)
2269 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2270 f2fs_nfs_get_inode);
2273 static const struct export_operations f2fs_export_ops = {
2274 .fh_to_dentry = f2fs_fh_to_dentry,
2275 .fh_to_parent = f2fs_fh_to_parent,
2276 .get_parent = f2fs_get_parent,
2279 static loff_t max_file_blocks(void)
2282 loff_t leaf_count = ADDRS_PER_BLOCK;
2285 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
2286 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
2287 * space in inode.i_addr, it will be more safe to reassign
2291 /* two direct node blocks */
2292 result += (leaf_count * 2);
2294 /* two indirect node blocks */
2295 leaf_count *= NIDS_PER_BLOCK;
2296 result += (leaf_count * 2);
2298 /* one double indirect node block */
2299 leaf_count *= NIDS_PER_BLOCK;
2300 result += leaf_count;
2305 static int __f2fs_commit_super(struct buffer_head *bh,
2306 struct f2fs_super_block *super)
2310 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
2311 set_buffer_dirty(bh);
2314 /* it's rare case, we can do fua all the time */
2315 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
2318 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
2319 struct buffer_head *bh)
2321 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2322 (bh->b_data + F2FS_SUPER_OFFSET);
2323 struct super_block *sb = sbi->sb;
2324 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2325 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2326 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2327 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2328 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2329 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2330 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2331 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2332 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2333 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2334 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2335 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2336 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2337 u64 main_end_blkaddr = main_blkaddr +
2338 (segment_count_main << log_blocks_per_seg);
2339 u64 seg_end_blkaddr = segment0_blkaddr +
2340 (segment_count << log_blocks_per_seg);
2342 if (segment0_blkaddr != cp_blkaddr) {
2343 f2fs_msg(sb, KERN_INFO,
2344 "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2345 segment0_blkaddr, cp_blkaddr);
2349 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2351 f2fs_msg(sb, KERN_INFO,
2352 "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2353 cp_blkaddr, sit_blkaddr,
2354 segment_count_ckpt << log_blocks_per_seg);
2358 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2360 f2fs_msg(sb, KERN_INFO,
2361 "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2362 sit_blkaddr, nat_blkaddr,
2363 segment_count_sit << log_blocks_per_seg);
2367 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2369 f2fs_msg(sb, KERN_INFO,
2370 "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2371 nat_blkaddr, ssa_blkaddr,
2372 segment_count_nat << log_blocks_per_seg);
2376 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2378 f2fs_msg(sb, KERN_INFO,
2379 "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2380 ssa_blkaddr, main_blkaddr,
2381 segment_count_ssa << log_blocks_per_seg);
2385 if (main_end_blkaddr > seg_end_blkaddr) {
2386 f2fs_msg(sb, KERN_INFO,
2387 "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2390 (segment_count << log_blocks_per_seg),
2391 segment_count_main << log_blocks_per_seg);
2393 } else if (main_end_blkaddr < seg_end_blkaddr) {
2397 /* fix in-memory information all the time */
2398 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2399 segment0_blkaddr) >> log_blocks_per_seg);
2401 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
2402 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2405 err = __f2fs_commit_super(bh, NULL);
2406 res = err ? "failed" : "done";
2408 f2fs_msg(sb, KERN_INFO,
2409 "Fix alignment : %s, start(%u) end(%u) block(%u)",
2412 (segment_count << log_blocks_per_seg),
2413 segment_count_main << log_blocks_per_seg);
2420 static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
2421 struct buffer_head *bh)
2423 block_t segment_count, segs_per_sec, secs_per_zone;
2424 block_t total_sections, blocks_per_seg;
2425 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2426 (bh->b_data + F2FS_SUPER_OFFSET);
2427 struct super_block *sb = sbi->sb;
2428 unsigned int blocksize;
2429 size_t crc_offset = 0;
2432 /* Check checksum_offset and crc in superblock */
2433 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
2434 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2436 offsetof(struct f2fs_super_block, crc)) {
2437 f2fs_msg(sb, KERN_INFO,
2438 "Invalid SB checksum offset: %zu",
2442 crc = le32_to_cpu(raw_super->crc);
2443 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
2444 f2fs_msg(sb, KERN_INFO,
2445 "Invalid SB checksum value: %u", crc);
2450 if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) {
2451 f2fs_msg(sb, KERN_INFO,
2452 "Magic Mismatch, valid(0x%x) - read(0x%x)",
2453 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2457 /* Currently, support only 4KB page cache size */
2458 if (F2FS_BLKSIZE != PAGE_SIZE) {
2459 f2fs_msg(sb, KERN_INFO,
2460 "Invalid page_cache_size (%lu), supports only 4KB\n",
2465 /* Currently, support only 4KB block size */
2466 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
2467 if (blocksize != F2FS_BLKSIZE) {
2468 f2fs_msg(sb, KERN_INFO,
2469 "Invalid blocksize (%u), supports only 4KB\n",
2474 /* check log blocks per segment */
2475 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
2476 f2fs_msg(sb, KERN_INFO,
2477 "Invalid log blocks per segment (%u)\n",
2478 le32_to_cpu(raw_super->log_blocks_per_seg));
2482 /* Currently, support 512/1024/2048/4096 bytes sector size */
2483 if (le32_to_cpu(raw_super->log_sectorsize) >
2484 F2FS_MAX_LOG_SECTOR_SIZE ||
2485 le32_to_cpu(raw_super->log_sectorsize) <
2486 F2FS_MIN_LOG_SECTOR_SIZE) {
2487 f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)",
2488 le32_to_cpu(raw_super->log_sectorsize));
2491 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2492 le32_to_cpu(raw_super->log_sectorsize) !=
2493 F2FS_MAX_LOG_SECTOR_SIZE) {
2494 f2fs_msg(sb, KERN_INFO,
2495 "Invalid log sectors per block(%u) log sectorsize(%u)",
2496 le32_to_cpu(raw_super->log_sectors_per_block),
2497 le32_to_cpu(raw_super->log_sectorsize));
2501 segment_count = le32_to_cpu(raw_super->segment_count);
2502 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2503 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2504 total_sections = le32_to_cpu(raw_super->section_count);
2506 /* blocks_per_seg should be 512, given the above check */
2507 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2509 if (segment_count > F2FS_MAX_SEGMENT ||
2510 segment_count < F2FS_MIN_SEGMENTS) {
2511 f2fs_msg(sb, KERN_INFO,
2512 "Invalid segment count (%u)",
2517 if (total_sections > segment_count ||
2518 total_sections < F2FS_MIN_SEGMENTS ||
2519 segs_per_sec > segment_count || !segs_per_sec) {
2520 f2fs_msg(sb, KERN_INFO,
2521 "Invalid segment/section count (%u, %u x %u)",
2522 segment_count, total_sections, segs_per_sec);
2526 if ((segment_count / segs_per_sec) < total_sections) {
2527 f2fs_msg(sb, KERN_INFO,
2528 "Small segment_count (%u < %u * %u)",
2529 segment_count, segs_per_sec, total_sections);
2533 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
2534 f2fs_msg(sb, KERN_INFO,
2535 "Wrong segment_count / block_count (%u > %llu)",
2536 segment_count, le64_to_cpu(raw_super->block_count));
2540 if (secs_per_zone > total_sections || !secs_per_zone) {
2541 f2fs_msg(sb, KERN_INFO,
2542 "Wrong secs_per_zone / total_sections (%u, %u)",
2543 secs_per_zone, total_sections);
2546 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2547 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2548 (le32_to_cpu(raw_super->extension_count) +
2549 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
2550 f2fs_msg(sb, KERN_INFO,
2551 "Corrupted extension count (%u + %u > %u)",
2552 le32_to_cpu(raw_super->extension_count),
2553 raw_super->hot_ext_count,
2554 F2FS_MAX_EXTENSION);
2558 if (le32_to_cpu(raw_super->cp_payload) >
2559 (blocks_per_seg - F2FS_CP_PACKS)) {
2560 f2fs_msg(sb, KERN_INFO,
2561 "Insane cp_payload (%u > %u)",
2562 le32_to_cpu(raw_super->cp_payload),
2563 blocks_per_seg - F2FS_CP_PACKS);
2567 /* check reserved ino info */
2568 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2569 le32_to_cpu(raw_super->meta_ino) != 2 ||
2570 le32_to_cpu(raw_super->root_ino) != 3) {
2571 f2fs_msg(sb, KERN_INFO,
2572 "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2573 le32_to_cpu(raw_super->node_ino),
2574 le32_to_cpu(raw_super->meta_ino),
2575 le32_to_cpu(raw_super->root_ino));
2579 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
2580 if (sanity_check_area_boundary(sbi, bh))
2586 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
2588 unsigned int total, fsmeta;
2589 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2590 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2591 unsigned int ovp_segments, reserved_segments;
2592 unsigned int main_segs, blocks_per_seg;
2593 unsigned int sit_segs, nat_segs;
2594 unsigned int sit_bitmap_size, nat_bitmap_size;
2595 unsigned int log_blocks_per_seg;
2596 unsigned int segment_count_main;
2597 unsigned int cp_pack_start_sum, cp_payload;
2598 block_t user_block_count;
2601 total = le32_to_cpu(raw_super->segment_count);
2602 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
2603 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2605 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2607 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2608 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2610 if (unlikely(fsmeta >= total))
2613 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2614 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2616 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2617 ovp_segments == 0 || reserved_segments == 0)) {
2618 f2fs_msg(sbi->sb, KERN_ERR,
2619 "Wrong layout: check mkfs.f2fs version");
2623 user_block_count = le64_to_cpu(ckpt->user_block_count);
2624 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2625 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2626 if (!user_block_count || user_block_count >=
2627 segment_count_main << log_blocks_per_seg) {
2628 f2fs_msg(sbi->sb, KERN_ERR,
2629 "Wrong user_block_count: %u", user_block_count);
2633 main_segs = le32_to_cpu(raw_super->segment_count_main);
2634 blocks_per_seg = sbi->blocks_per_seg;
2636 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2637 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2638 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2640 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2641 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2642 le32_to_cpu(ckpt->cur_node_segno[j])) {
2643 f2fs_msg(sbi->sb, KERN_ERR,
2644 "Node segment (%u, %u) has the same "
2646 le32_to_cpu(ckpt->cur_node_segno[i]));
2651 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2652 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2653 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2655 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2656 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2657 le32_to_cpu(ckpt->cur_data_segno[j])) {
2658 f2fs_msg(sbi->sb, KERN_ERR,
2659 "Data segment (%u, %u) has the same "
2661 le32_to_cpu(ckpt->cur_data_segno[i]));
2666 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2667 for (j = i; j < NR_CURSEG_DATA_TYPE; j++) {
2668 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2669 le32_to_cpu(ckpt->cur_data_segno[j])) {
2670 f2fs_msg(sbi->sb, KERN_ERR,
2671 "Data segment (%u) and Data segment (%u)"
2672 " has the same segno: %u", i, j,
2673 le32_to_cpu(ckpt->cur_node_segno[i]));
2679 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2680 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
2682 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2683 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
2684 f2fs_msg(sbi->sb, KERN_ERR,
2685 "Wrong bitmap size: sit: %u, nat:%u",
2686 sit_bitmap_size, nat_bitmap_size);
2690 cp_pack_start_sum = __start_sum_addr(sbi);
2691 cp_payload = __cp_payload(sbi);
2692 if (cp_pack_start_sum < cp_payload + 1 ||
2693 cp_pack_start_sum > blocks_per_seg - 1 -
2695 f2fs_msg(sbi->sb, KERN_ERR,
2696 "Wrong cp_pack_start_sum: %u",
2701 if (unlikely(f2fs_cp_error(sbi))) {
2702 f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck");
2708 static void init_sb_info(struct f2fs_sb_info *sbi)
2710 struct f2fs_super_block *raw_super = sbi->raw_super;
2713 sbi->log_sectors_per_block =
2714 le32_to_cpu(raw_super->log_sectors_per_block);
2715 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2716 sbi->blocksize = 1 << sbi->log_blocksize;
2717 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2718 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2719 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2720 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2721 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2722 sbi->total_node_count =
2723 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2724 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2725 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2726 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2727 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
2728 sbi->cur_victim_sec = NULL_SECNO;
2729 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2730 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
2731 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
2732 sbi->migration_granularity = sbi->segs_per_sec;
2734 sbi->dir_level = DEF_DIR_LEVEL;
2735 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
2736 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
2737 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2738 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
2739 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
2740 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2741 DEF_UMOUNT_DISCARD_TIMEOUT;
2742 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2744 for (i = 0; i < NR_COUNT_TYPE; i++)
2745 atomic_set(&sbi->nr_pages[i], 0);
2747 for (i = 0; i < META; i++)
2748 atomic_set(&sbi->wb_sync_req[i], 0);
2750 INIT_LIST_HEAD(&sbi->s_list);
2751 mutex_init(&sbi->umount_mutex);
2752 init_rwsem(&sbi->io_order_lock);
2753 spin_lock_init(&sbi->cp_lock);
2755 sbi->dirty_device = 0;
2756 spin_lock_init(&sbi->dev_lock);
2758 init_rwsem(&sbi->sb_lock);
2761 static int init_percpu_info(struct f2fs_sb_info *sbi)
2765 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2769 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
2772 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2777 #ifdef CONFIG_BLK_DEV_ZONED
2778 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
2780 struct block_device *bdev = FDEV(devi).bdev;
2781 sector_t nr_sectors = bdev->bd_part->nr_sects;
2782 sector_t sector = 0;
2783 struct blk_zone *zones;
2784 unsigned int i, nr_zones;
2788 if (!f2fs_sb_has_blkzoned(sbi))
2791 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
2792 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
2794 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
2795 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2796 __ilog2_u32(sbi->blocks_per_blkz))
2798 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
2799 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2800 sbi->log_blocks_per_blkz;
2801 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
2802 FDEV(devi).nr_blkz++;
2804 FDEV(devi).blkz_type = f2fs_kmalloc(sbi, FDEV(devi).nr_blkz,
2806 if (!FDEV(devi).blkz_type)
2809 #define F2FS_REPORT_NR_ZONES 4096
2811 zones = f2fs_kzalloc(sbi,
2812 array_size(F2FS_REPORT_NR_ZONES,
2813 sizeof(struct blk_zone)),
2818 /* Get block zones type */
2819 while (zones && sector < nr_sectors) {
2821 nr_zones = F2FS_REPORT_NR_ZONES;
2822 err = blkdev_report_zones(bdev, sector,
2832 for (i = 0; i < nr_zones; i++) {
2833 FDEV(devi).blkz_type[n] = zones[i].type;
2834 sector += zones[i].len;
2846 * Read f2fs raw super block.
2847 * Because we have two copies of super block, so read both of them
2848 * to get the first valid one. If any one of them is broken, we pass
2849 * them recovery flag back to the caller.
2851 static int read_raw_super_block(struct f2fs_sb_info *sbi,
2852 struct f2fs_super_block **raw_super,
2853 int *valid_super_block, int *recovery)
2855 struct super_block *sb = sbi->sb;
2857 struct buffer_head *bh;
2858 struct f2fs_super_block *super;
2861 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2865 for (block = 0; block < 2; block++) {
2866 bh = sb_bread(sb, block);
2868 f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock",
2874 /* sanity checking of raw super */
2875 if (sanity_check_raw_super(sbi, bh)) {
2876 f2fs_msg(sb, KERN_ERR,
2877 "Can't find valid F2FS filesystem in %dth superblock",
2885 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2887 *valid_super_block = block;
2893 /* Fail to read any one of the superblocks*/
2897 /* No valid superblock */
2906 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
2908 struct buffer_head *bh;
2912 if ((recover && f2fs_readonly(sbi->sb)) ||
2913 bdev_read_only(sbi->sb->s_bdev)) {
2914 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2918 /* we should update superblock crc here */
2919 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
2920 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
2921 offsetof(struct f2fs_super_block, crc));
2922 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
2925 /* write back-up superblock first */
2926 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
2929 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2932 /* if we are in recovery path, skip writing valid superblock */
2936 /* write current valid superblock */
2937 bh = sb_bread(sbi->sb, sbi->valid_super_block);
2940 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2945 static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
2947 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2948 unsigned int max_devices = MAX_DEVICES;
2951 /* Initialize single device information */
2952 if (!RDEV(0).path[0]) {
2953 if (!bdev_is_zoned(sbi->sb->s_bdev))
2959 * Initialize multiple devices information, or single
2960 * zoned block device information.
2962 sbi->devs = f2fs_kzalloc(sbi,
2963 array_size(max_devices,
2964 sizeof(struct f2fs_dev_info)),
2969 for (i = 0; i < max_devices; i++) {
2971 if (i > 0 && !RDEV(i).path[0])
2974 if (max_devices == 1) {
2975 /* Single zoned block device mount */
2977 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
2978 sbi->sb->s_mode, sbi->sb->s_type);
2980 /* Multi-device mount */
2981 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
2982 FDEV(i).total_segments =
2983 le32_to_cpu(RDEV(i).total_segments);
2985 FDEV(i).start_blk = 0;
2986 FDEV(i).end_blk = FDEV(i).start_blk +
2987 (FDEV(i).total_segments <<
2988 sbi->log_blocks_per_seg) - 1 +
2989 le32_to_cpu(raw_super->segment0_blkaddr);
2991 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
2992 FDEV(i).end_blk = FDEV(i).start_blk +
2993 (FDEV(i).total_segments <<
2994 sbi->log_blocks_per_seg) - 1;
2996 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
2997 sbi->sb->s_mode, sbi->sb->s_type);
2999 if (IS_ERR(FDEV(i).bdev))
3000 return PTR_ERR(FDEV(i).bdev);
3002 /* to release errored devices */
3003 sbi->s_ndevs = i + 1;
3005 #ifdef CONFIG_BLK_DEV_ZONED
3006 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
3007 !f2fs_sb_has_blkzoned(sbi)) {
3008 f2fs_msg(sbi->sb, KERN_ERR,
3009 "Zoned block device feature not enabled\n");
3012 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3013 if (init_blkz_info(sbi, i)) {
3014 f2fs_msg(sbi->sb, KERN_ERR,
3015 "Failed to initialize F2FS blkzone information");
3018 if (max_devices == 1)
3020 f2fs_msg(sbi->sb, KERN_INFO,
3021 "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3023 FDEV(i).total_segments,
3024 FDEV(i).start_blk, FDEV(i).end_blk,
3025 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3026 "Host-aware" : "Host-managed");
3030 f2fs_msg(sbi->sb, KERN_INFO,
3031 "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3033 FDEV(i).total_segments,
3034 FDEV(i).start_blk, FDEV(i).end_blk);
3036 f2fs_msg(sbi->sb, KERN_INFO,
3037 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3041 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3043 struct f2fs_sm_info *sm_i = SM_I(sbi);
3045 /* adjust parameters according to the volume size */
3046 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
3047 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
3048 sm_i->dcc_info->discard_granularity = 1;
3049 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3052 sbi->readdir_ra = 1;
3055 static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3057 struct f2fs_sb_info *sbi;
3058 struct f2fs_super_block *raw_super;
3061 bool skip_recovery = false, need_fsck = false;
3062 char *options = NULL;
3063 int recovery, i, valid_super_block;
3064 struct curseg_info *seg_i;
3070 valid_super_block = -1;
3073 /* allocate memory for f2fs-specific super block info */
3074 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3080 /* Load the checksum driver */
3081 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3082 if (IS_ERR(sbi->s_chksum_driver)) {
3083 f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver.");
3084 err = PTR_ERR(sbi->s_chksum_driver);
3085 sbi->s_chksum_driver = NULL;
3089 /* set a block size */
3090 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
3091 f2fs_msg(sb, KERN_ERR, "unable to set blocksize");
3095 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
3100 sb->s_fs_info = sbi;
3101 sbi->raw_super = raw_super;
3103 /* precompute checksum seed for metadata */
3104 if (f2fs_sb_has_inode_chksum(sbi))
3105 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3106 sizeof(raw_super->uuid));
3109 * The BLKZONED feature indicates that the drive was formatted with
3110 * zone alignment optimization. This is optional for host-aware
3111 * devices, but mandatory for host-managed zoned block devices.
3113 #ifndef CONFIG_BLK_DEV_ZONED
3114 if (f2fs_sb_has_blkzoned(sbi)) {
3115 f2fs_msg(sb, KERN_ERR,
3116 "Zoned block device support is not enabled\n");
3121 default_options(sbi);
3122 /* parse mount options */
3123 options = kstrdup((const char *)data, GFP_KERNEL);
3124 if (data && !options) {
3129 err = parse_options(sb, options);
3133 sbi->max_file_blocks = max_file_blocks();
3134 sb->s_maxbytes = sbi->max_file_blocks <<
3135 le32_to_cpu(raw_super->log_blocksize);
3136 sb->s_max_links = F2FS_LINK_MAX;
3139 sb->dq_op = &f2fs_quota_operations;
3140 if (f2fs_sb_has_quota_ino(sbi))
3141 sb->s_qcop = &dquot_quotactl_sysfile_ops;
3143 sb->s_qcop = &f2fs_quotactl_ops;
3144 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
3146 if (f2fs_sb_has_quota_ino(sbi)) {
3147 for (i = 0; i < MAXQUOTAS; i++) {
3148 if (f2fs_qf_ino(sbi->sb, i))
3149 sbi->nquota_files++;
3154 sb->s_op = &f2fs_sops;
3155 #ifdef CONFIG_F2FS_FS_ENCRYPTION
3156 sb->s_cop = &f2fs_cryptops;
3158 sb->s_xattr = f2fs_xattr_handlers;
3159 sb->s_export_op = &f2fs_export_ops;
3160 sb->s_magic = F2FS_SUPER_MAGIC;
3161 sb->s_time_gran = 1;
3162 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3163 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
3164 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
3165 sb->s_iflags |= SB_I_CGROUPWB;
3167 /* init f2fs-specific super block info */
3168 sbi->valid_super_block = valid_super_block;
3169 mutex_init(&sbi->gc_mutex);
3170 mutex_init(&sbi->writepages);
3171 mutex_init(&sbi->cp_mutex);
3172 init_rwsem(&sbi->node_write);
3173 init_rwsem(&sbi->node_change);
3175 /* disallow all the data/node/meta page writes */
3176 set_sbi_flag(sbi, SBI_POR_DOING);
3177 spin_lock_init(&sbi->stat_lock);
3179 /* init iostat info */
3180 spin_lock_init(&sbi->iostat_lock);
3181 sbi->iostat_enable = false;
3183 for (i = 0; i < NR_PAGE_TYPE; i++) {
3184 int n = (i == META) ? 1: NR_TEMP_TYPE;
3190 sizeof(struct f2fs_bio_info)),
3192 if (!sbi->write_io[i]) {
3197 for (j = HOT; j < n; j++) {
3198 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3199 sbi->write_io[i][j].sbi = sbi;
3200 sbi->write_io[i][j].bio = NULL;
3201 spin_lock_init(&sbi->write_io[i][j].io_lock);
3202 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
3206 init_rwsem(&sbi->cp_rwsem);
3207 init_waitqueue_head(&sbi->cp_wait);
3210 err = init_percpu_info(sbi);
3214 if (F2FS_IO_SIZE(sbi) > 1) {
3215 sbi->write_io_dummy =
3216 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
3217 if (!sbi->write_io_dummy) {
3223 /* get an inode for meta space */
3224 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3225 if (IS_ERR(sbi->meta_inode)) {
3226 f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode");
3227 err = PTR_ERR(sbi->meta_inode);
3231 err = f2fs_get_valid_checkpoint(sbi);
3233 f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint");
3234 goto free_meta_inode;
3237 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3238 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
3239 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3240 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3241 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3244 /* Initialize device list */
3245 err = f2fs_scan_devices(sbi);
3247 f2fs_msg(sb, KERN_ERR, "Failed to find devices");
3251 sbi->total_valid_node_count =
3252 le32_to_cpu(sbi->ckpt->valid_node_count);
3253 percpu_counter_set(&sbi->total_valid_inode_count,
3254 le32_to_cpu(sbi->ckpt->valid_inode_count));
3255 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3256 sbi->total_valid_block_count =
3257 le64_to_cpu(sbi->ckpt->valid_block_count);
3258 sbi->last_valid_block_count = sbi->total_valid_block_count;
3259 sbi->reserved_blocks = 0;
3260 sbi->current_reserved_blocks = 0;
3261 limit_reserve_root(sbi);
3263 for (i = 0; i < NR_INODE_TYPE; i++) {
3264 INIT_LIST_HEAD(&sbi->inode_list[i]);
3265 spin_lock_init(&sbi->inode_lock[i]);
3268 f2fs_init_extent_cache_info(sbi);
3270 f2fs_init_ino_entry_info(sbi);
3272 f2fs_init_fsync_node_info(sbi);
3274 /* setup f2fs internal modules */
3275 err = f2fs_build_segment_manager(sbi);
3277 f2fs_msg(sb, KERN_ERR,
3278 "Failed to initialize F2FS segment manager");
3281 err = f2fs_build_node_manager(sbi);
3283 f2fs_msg(sb, KERN_ERR,
3284 "Failed to initialize F2FS node manager");
3288 /* For write statistics */
3289 if (sb->s_bdev->bd_part)
3290 sbi->sectors_written_start =
3291 (u64)part_stat_read(sb->s_bdev->bd_part,
3292 sectors[STAT_WRITE]);
3294 /* Read accumulated write IO statistics if exists */
3295 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3296 if (__exist_node_summaries(sbi))
3297 sbi->kbytes_written =
3298 le64_to_cpu(seg_i->journal->info.kbytes_written);
3300 f2fs_build_gc_manager(sbi);
3302 err = f2fs_build_stats(sbi);
3306 /* get an inode for node space */
3307 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3308 if (IS_ERR(sbi->node_inode)) {
3309 f2fs_msg(sb, KERN_ERR, "Failed to read node inode");
3310 err = PTR_ERR(sbi->node_inode);
3314 /* read root inode and dentry */
3315 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3317 f2fs_msg(sb, KERN_ERR, "Failed to read root inode");
3318 err = PTR_ERR(root);
3319 goto free_node_inode;
3321 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3322 !root->i_size || !root->i_nlink) {
3325 goto free_node_inode;
3328 sb->s_root = d_make_root(root); /* allocate root dentry */
3331 goto free_node_inode;
3334 err = f2fs_register_sysfs(sbi);
3336 goto free_root_inode;
3339 /* Enable quota usage during mount */
3340 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
3341 err = f2fs_enable_quotas(sb);
3343 f2fs_msg(sb, KERN_ERR,
3344 "Cannot turn on quotas: error %d", err);
3347 /* if there are nt orphan nodes free them */
3348 err = f2fs_recover_orphan_inodes(sbi);
3352 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
3353 goto reset_checkpoint;
3355 /* recover fsynced data */
3356 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
3358 * mount should be failed, when device has readonly mode, and
3359 * previous checkpoint was not done by clean system shutdown.
3361 if (bdev_read_only(sb->s_bdev) &&
3362 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3368 set_sbi_flag(sbi, SBI_NEED_FSCK);
3371 goto reset_checkpoint;
3373 err = f2fs_recover_fsync_data(sbi, false);
3376 skip_recovery = true;
3378 f2fs_msg(sb, KERN_ERR,
3379 "Cannot recover all fsync data errno=%d", err);
3383 err = f2fs_recover_fsync_data(sbi, true);
3385 if (!f2fs_readonly(sb) && err > 0) {
3387 f2fs_msg(sb, KERN_ERR,
3388 "Need to recover fsync data");
3393 /* f2fs_recover_fsync_data() cleared this already */
3394 clear_sbi_flag(sbi, SBI_POR_DOING);
3396 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3397 err = f2fs_disable_checkpoint(sbi);
3399 goto sync_free_meta;
3400 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3401 f2fs_enable_checkpoint(sbi);
3405 * If filesystem is not mounted as read-only then
3406 * do start the gc_thread.
3408 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
3409 /* After POR, we can run background GC thread.*/
3410 err = f2fs_start_gc_thread(sbi);
3412 goto sync_free_meta;
3416 /* recover broken superblock */
3418 err = f2fs_commit_super(sbi, true);
3419 f2fs_msg(sb, KERN_INFO,
3420 "Try to recover %dth superblock, ret: %d",
3421 sbi->valid_super_block ? 1 : 2, err);
3424 f2fs_join_shrinker(sbi);
3426 f2fs_tuning_parameters(sbi);
3428 f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx",
3429 cur_cp_version(F2FS_CKPT(sbi)));
3430 f2fs_update_time(sbi, CP_TIME);
3431 f2fs_update_time(sbi, REQ_TIME);
3432 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3436 /* safe to flush all the data */
3437 sync_filesystem(sbi->sb);
3442 f2fs_truncate_quota_inode_pages(sb);
3443 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
3444 f2fs_quota_off_umount(sbi->sb);
3447 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
3448 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
3449 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3450 * falls into an infinite loop in f2fs_sync_meta_pages().
3452 truncate_inode_pages_final(META_MAPPING(sbi));
3453 /* evict some inodes being cached by GC */
3455 f2fs_unregister_sysfs(sbi);
3460 f2fs_release_ino_entry(sbi, true);
3461 truncate_inode_pages_final(NODE_MAPPING(sbi));
3462 iput(sbi->node_inode);
3463 sbi->node_inode = NULL;
3465 f2fs_destroy_stats(sbi);
3467 f2fs_destroy_node_manager(sbi);
3469 f2fs_destroy_segment_manager(sbi);
3471 destroy_device_list(sbi);
3474 make_bad_inode(sbi->meta_inode);
3475 iput(sbi->meta_inode);
3476 sbi->meta_inode = NULL;
3478 mempool_destroy(sbi->write_io_dummy);
3480 destroy_percpu_info(sbi);
3482 for (i = 0; i < NR_PAGE_TYPE; i++)
3483 kvfree(sbi->write_io[i]);
3486 for (i = 0; i < MAXQUOTAS; i++)
3487 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
3493 if (sbi->s_chksum_driver)
3494 crypto_free_shash(sbi->s_chksum_driver);
3497 /* give only one another chance */
3498 if (retry_cnt > 0 && skip_recovery) {
3500 shrink_dcache_sb(sb);
3506 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3507 const char *dev_name, void *data)
3509 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3512 static void kill_f2fs_super(struct super_block *sb)
3515 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3517 set_sbi_flag(sbi, SBI_IS_CLOSE);
3518 f2fs_stop_gc_thread(sbi);
3519 f2fs_stop_discard_thread(sbi);
3521 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3522 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3523 struct cp_control cpc = {
3524 .reason = CP_UMOUNT,
3526 f2fs_write_checkpoint(sbi, &cpc);
3529 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3530 sb->s_flags &= ~SB_RDONLY;
3532 kill_block_super(sb);
3535 static struct file_system_type f2fs_fs_type = {
3536 .owner = THIS_MODULE,
3538 .mount = f2fs_mount,
3539 .kill_sb = kill_f2fs_super,
3540 .fs_flags = FS_REQUIRES_DEV,
3542 MODULE_ALIAS_FS("f2fs");
3544 static int __init init_inodecache(void)
3546 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3547 sizeof(struct f2fs_inode_info), 0,
3548 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
3549 if (!f2fs_inode_cachep)
3554 static void destroy_inodecache(void)
3557 * Make sure all delayed rcu free inodes are flushed before we
3561 kmem_cache_destroy(f2fs_inode_cachep);
3564 static int __init init_f2fs_fs(void)
3568 if (PAGE_SIZE != F2FS_BLKSIZE) {
3569 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3570 PAGE_SIZE, F2FS_BLKSIZE);
3574 f2fs_build_trace_ios();
3576 err = init_inodecache();
3579 err = f2fs_create_node_manager_caches();
3581 goto free_inodecache;
3582 err = f2fs_create_segment_manager_caches();
3584 goto free_node_manager_caches;
3585 err = f2fs_create_checkpoint_caches();
3587 goto free_segment_manager_caches;
3588 err = f2fs_create_extent_cache();
3590 goto free_checkpoint_caches;
3591 err = f2fs_init_sysfs();
3593 goto free_extent_cache;
3594 err = register_shrinker(&f2fs_shrinker_info);
3597 err = register_filesystem(&f2fs_fs_type);
3600 f2fs_create_root_stats();
3601 err = f2fs_init_post_read_processing();
3603 goto free_root_stats;
3607 f2fs_destroy_root_stats();
3608 unregister_filesystem(&f2fs_fs_type);
3610 unregister_shrinker(&f2fs_shrinker_info);
3614 f2fs_destroy_extent_cache();
3615 free_checkpoint_caches:
3616 f2fs_destroy_checkpoint_caches();
3617 free_segment_manager_caches:
3618 f2fs_destroy_segment_manager_caches();
3619 free_node_manager_caches:
3620 f2fs_destroy_node_manager_caches();
3622 destroy_inodecache();
3627 static void __exit exit_f2fs_fs(void)
3629 f2fs_destroy_post_read_processing();
3630 f2fs_destroy_root_stats();
3631 unregister_filesystem(&f2fs_fs_type);
3632 unregister_shrinker(&f2fs_shrinker_info);
3634 f2fs_destroy_extent_cache();
3635 f2fs_destroy_checkpoint_caches();
3636 f2fs_destroy_segment_manager_caches();
3637 f2fs_destroy_node_manager_caches();
3638 destroy_inodecache();
3639 f2fs_destroy_trace_ios();
3642 module_init(init_f2fs_fs)
3643 module_exit(exit_f2fs_fs)
3645 MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3646 MODULE_DESCRIPTION("Flash Friendly File System");
3647 MODULE_LICENSE("GPL");