4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 #include <linux/module.h>
12 #include <linux/init.h>
14 #include <linux/statfs.h>
15 #include <linux/buffer_head.h>
16 #include <linux/backing-dev.h>
17 #include <linux/kthread.h>
18 #include <linux/parser.h>
19 #include <linux/mount.h>
20 #include <linux/seq_file.h>
21 #include <linux/proc_fs.h>
22 #include <linux/random.h>
23 #include <linux/exportfs.h>
24 #include <linux/blkdev.h>
25 #include <linux/quotaops.h>
26 #include <linux/f2fs_fs.h>
27 #include <linux/sysfs.h>
28 #include <linux/quota.h>
37 #define CREATE_TRACE_POINTS
38 #include <trace/events/f2fs.h>
40 static struct kmem_cache *f2fs_inode_cachep;
42 #ifdef CONFIG_F2FS_FAULT_INJECTION
44 char *fault_name[FAULT_MAX] = {
45 [FAULT_KMALLOC] = "kmalloc",
46 [FAULT_PAGE_ALLOC] = "page alloc",
47 [FAULT_PAGE_GET] = "page get",
48 [FAULT_ALLOC_BIO] = "alloc bio",
49 [FAULT_ALLOC_NID] = "alloc nid",
50 [FAULT_ORPHAN] = "orphan",
51 [FAULT_BLOCK] = "no more block",
52 [FAULT_DIR_DEPTH] = "too big dir depth",
53 [FAULT_EVICT_INODE] = "evict_inode fail",
54 [FAULT_TRUNCATE] = "truncate fail",
55 [FAULT_IO] = "IO error",
56 [FAULT_CHECKPOINT] = "checkpoint error",
59 static void f2fs_build_fault_attr(struct f2fs_sb_info *sbi,
62 struct f2fs_fault_info *ffi = &sbi->fault_info;
65 atomic_set(&ffi->inject_ops, 0);
66 ffi->inject_rate = rate;
67 ffi->inject_type = (1 << FAULT_MAX) - 1;
69 memset(ffi, 0, sizeof(struct f2fs_fault_info));
74 /* f2fs-wide shrinker description */
75 static struct shrinker f2fs_shrinker_info = {
76 .scan_objects = f2fs_shrink_scan,
77 .count_objects = f2fs_shrink_count,
78 .seeks = DEFAULT_SEEKS,
83 Opt_disable_roll_forward,
94 Opt_disable_ext_identify,
97 Opt_inline_xattr_size,
131 static match_table_t f2fs_tokens = {
132 {Opt_gc_background, "background_gc=%s"},
133 {Opt_disable_roll_forward, "disable_roll_forward"},
134 {Opt_norecovery, "norecovery"},
135 {Opt_discard, "discard"},
136 {Opt_nodiscard, "nodiscard"},
137 {Opt_noheap, "no_heap"},
139 {Opt_user_xattr, "user_xattr"},
140 {Opt_nouser_xattr, "nouser_xattr"},
142 {Opt_noacl, "noacl"},
143 {Opt_active_logs, "active_logs=%u"},
144 {Opt_disable_ext_identify, "disable_ext_identify"},
145 {Opt_inline_xattr, "inline_xattr"},
146 {Opt_noinline_xattr, "noinline_xattr"},
147 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
148 {Opt_inline_data, "inline_data"},
149 {Opt_inline_dentry, "inline_dentry"},
150 {Opt_noinline_dentry, "noinline_dentry"},
151 {Opt_flush_merge, "flush_merge"},
152 {Opt_noflush_merge, "noflush_merge"},
153 {Opt_nobarrier, "nobarrier"},
154 {Opt_fastboot, "fastboot"},
155 {Opt_extent_cache, "extent_cache"},
156 {Opt_noextent_cache, "noextent_cache"},
157 {Opt_noinline_data, "noinline_data"},
158 {Opt_data_flush, "data_flush"},
159 {Opt_mode, "mode=%s"},
160 {Opt_io_size_bits, "io_bits=%u"},
161 {Opt_fault_injection, "fault_injection=%u"},
162 {Opt_lazytime, "lazytime"},
163 {Opt_nolazytime, "nolazytime"},
164 {Opt_quota, "quota"},
165 {Opt_noquota, "noquota"},
166 {Opt_usrquota, "usrquota"},
167 {Opt_grpquota, "grpquota"},
168 {Opt_prjquota, "prjquota"},
169 {Opt_usrjquota, "usrjquota=%s"},
170 {Opt_grpjquota, "grpjquota=%s"},
171 {Opt_prjjquota, "prjjquota=%s"},
172 {Opt_offusrjquota, "usrjquota="},
173 {Opt_offgrpjquota, "grpjquota="},
174 {Opt_offprjjquota, "prjjquota="},
175 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
176 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
177 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
181 void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...)
183 struct va_format vaf;
189 printk_ratelimited("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf);
193 static void init_once(void *foo)
195 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
197 inode_init_once(&fi->vfs_inode);
201 static const char * const quotatypes[] = INITQFNAMES;
202 #define QTYPE2NAME(t) (quotatypes[t])
203 static int f2fs_set_qf_name(struct super_block *sb, int qtype,
206 struct f2fs_sb_info *sbi = F2FS_SB(sb);
210 if (sb_any_quota_loaded(sb) && !sbi->s_qf_names[qtype]) {
211 f2fs_msg(sb, KERN_ERR,
212 "Cannot change journaled "
213 "quota options when quota turned on");
216 if (f2fs_sb_has_quota_ino(sb)) {
217 f2fs_msg(sb, KERN_INFO,
218 "QUOTA feature is enabled, so ignore qf_name");
222 qname = match_strdup(args);
224 f2fs_msg(sb, KERN_ERR,
225 "Not enough memory for storing quotafile name");
228 if (sbi->s_qf_names[qtype]) {
229 if (strcmp(sbi->s_qf_names[qtype], qname) == 0)
232 f2fs_msg(sb, KERN_ERR,
233 "%s quota file already specified",
237 if (strchr(qname, '/')) {
238 f2fs_msg(sb, KERN_ERR,
239 "quotafile must be on filesystem root");
242 sbi->s_qf_names[qtype] = qname;
250 static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
252 struct f2fs_sb_info *sbi = F2FS_SB(sb);
254 if (sb_any_quota_loaded(sb) && sbi->s_qf_names[qtype]) {
255 f2fs_msg(sb, KERN_ERR, "Cannot change journaled quota options"
256 " when quota turned on");
259 kfree(sbi->s_qf_names[qtype]);
260 sbi->s_qf_names[qtype] = NULL;
264 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
267 * We do the test below only for project quotas. 'usrquota' and
268 * 'grpquota' mount options are allowed even without quota feature
269 * to support legacy quotas in quota files.
271 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi->sb)) {
272 f2fs_msg(sbi->sb, KERN_ERR, "Project quota feature not enabled. "
273 "Cannot enable project quota enforcement.");
276 if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA] ||
277 sbi->s_qf_names[PRJQUOTA]) {
278 if (test_opt(sbi, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
279 clear_opt(sbi, USRQUOTA);
281 if (test_opt(sbi, GRPQUOTA) && sbi->s_qf_names[GRPQUOTA])
282 clear_opt(sbi, GRPQUOTA);
284 if (test_opt(sbi, PRJQUOTA) && sbi->s_qf_names[PRJQUOTA])
285 clear_opt(sbi, PRJQUOTA);
287 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
288 test_opt(sbi, PRJQUOTA)) {
289 f2fs_msg(sbi->sb, KERN_ERR, "old and new quota "
294 if (!sbi->s_jquota_fmt) {
295 f2fs_msg(sbi->sb, KERN_ERR, "journaled quota format "
301 if (f2fs_sb_has_quota_ino(sbi->sb) && sbi->s_jquota_fmt) {
302 f2fs_msg(sbi->sb, KERN_INFO,
303 "QUOTA feature is enabled, so ignore jquota_fmt");
304 sbi->s_jquota_fmt = 0;
306 if (f2fs_sb_has_quota_ino(sbi->sb) && sb_rdonly(sbi->sb)) {
307 f2fs_msg(sbi->sb, KERN_INFO,
308 "Filesystem with quota feature cannot be mounted RDWR "
309 "without CONFIG_QUOTA");
316 static int parse_options(struct super_block *sb, char *options)
318 struct f2fs_sb_info *sbi = F2FS_SB(sb);
319 struct request_queue *q;
320 substring_t args[MAX_OPT_ARGS];
330 while ((p = strsep(&options, ",")) != NULL) {
335 * Initialize args struct so we know whether arg was
336 * found; some options take optional arguments.
338 args[0].to = args[0].from = NULL;
339 token = match_token(p, f2fs_tokens, args);
342 case Opt_gc_background:
343 name = match_strdup(&args[0]);
347 if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
349 clear_opt(sbi, FORCE_FG_GC);
350 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
351 clear_opt(sbi, BG_GC);
352 clear_opt(sbi, FORCE_FG_GC);
353 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
355 set_opt(sbi, FORCE_FG_GC);
362 case Opt_disable_roll_forward:
363 set_opt(sbi, DISABLE_ROLL_FORWARD);
366 /* this option mounts f2fs with ro */
367 set_opt(sbi, DISABLE_ROLL_FORWARD);
368 if (!f2fs_readonly(sb))
372 q = bdev_get_queue(sb->s_bdev);
373 if (blk_queue_discard(q)) {
374 set_opt(sbi, DISCARD);
375 } else if (!f2fs_sb_mounted_blkzoned(sb)) {
376 f2fs_msg(sb, KERN_WARNING,
377 "mounting with \"discard\" option, but "
378 "the device does not support discard");
382 if (f2fs_sb_mounted_blkzoned(sb)) {
383 f2fs_msg(sb, KERN_WARNING,
384 "discard is required for zoned block devices");
387 clear_opt(sbi, DISCARD);
390 set_opt(sbi, NOHEAP);
393 clear_opt(sbi, NOHEAP);
395 #ifdef CONFIG_F2FS_FS_XATTR
397 set_opt(sbi, XATTR_USER);
399 case Opt_nouser_xattr:
400 clear_opt(sbi, XATTR_USER);
402 case Opt_inline_xattr:
403 set_opt(sbi, INLINE_XATTR);
405 case Opt_noinline_xattr:
406 clear_opt(sbi, INLINE_XATTR);
408 case Opt_inline_xattr_size:
409 if (args->from && match_int(args, &arg))
411 set_opt(sbi, INLINE_XATTR_SIZE);
412 sbi->inline_xattr_size = arg;
416 f2fs_msg(sb, KERN_INFO,
417 "user_xattr options not supported");
419 case Opt_nouser_xattr:
420 f2fs_msg(sb, KERN_INFO,
421 "nouser_xattr options not supported");
423 case Opt_inline_xattr:
424 f2fs_msg(sb, KERN_INFO,
425 "inline_xattr options not supported");
427 case Opt_noinline_xattr:
428 f2fs_msg(sb, KERN_INFO,
429 "noinline_xattr options not supported");
432 #ifdef CONFIG_F2FS_FS_POSIX_ACL
434 set_opt(sbi, POSIX_ACL);
437 clear_opt(sbi, POSIX_ACL);
441 f2fs_msg(sb, KERN_INFO, "acl options not supported");
444 f2fs_msg(sb, KERN_INFO, "noacl options not supported");
447 case Opt_active_logs:
448 if (args->from && match_int(args, &arg))
450 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
452 sbi->active_logs = arg;
454 case Opt_disable_ext_identify:
455 set_opt(sbi, DISABLE_EXT_IDENTIFY);
457 case Opt_inline_data:
458 set_opt(sbi, INLINE_DATA);
460 case Opt_inline_dentry:
461 set_opt(sbi, INLINE_DENTRY);
463 case Opt_noinline_dentry:
464 clear_opt(sbi, INLINE_DENTRY);
466 case Opt_flush_merge:
467 set_opt(sbi, FLUSH_MERGE);
469 case Opt_noflush_merge:
470 clear_opt(sbi, FLUSH_MERGE);
473 set_opt(sbi, NOBARRIER);
476 set_opt(sbi, FASTBOOT);
478 case Opt_extent_cache:
479 set_opt(sbi, EXTENT_CACHE);
481 case Opt_noextent_cache:
482 clear_opt(sbi, EXTENT_CACHE);
484 case Opt_noinline_data:
485 clear_opt(sbi, INLINE_DATA);
488 set_opt(sbi, DATA_FLUSH);
491 name = match_strdup(&args[0]);
495 if (strlen(name) == 8 &&
496 !strncmp(name, "adaptive", 8)) {
497 if (f2fs_sb_mounted_blkzoned(sb)) {
498 f2fs_msg(sb, KERN_WARNING,
499 "adaptive mode is not allowed with "
500 "zoned block device feature");
504 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
505 } else if (strlen(name) == 3 &&
506 !strncmp(name, "lfs", 3)) {
507 set_opt_mode(sbi, F2FS_MOUNT_LFS);
514 case Opt_io_size_bits:
515 if (args->from && match_int(args, &arg))
517 if (arg > __ilog2_u32(BIO_MAX_PAGES)) {
518 f2fs_msg(sb, KERN_WARNING,
519 "Not support %d, larger than %d",
520 1 << arg, BIO_MAX_PAGES);
523 sbi->write_io_size_bits = arg;
525 case Opt_fault_injection:
526 if (args->from && match_int(args, &arg))
528 #ifdef CONFIG_F2FS_FAULT_INJECTION
529 f2fs_build_fault_attr(sbi, arg);
530 set_opt(sbi, FAULT_INJECTION);
532 f2fs_msg(sb, KERN_INFO,
533 "FAULT_INJECTION was not selected");
537 sb->s_flags |= MS_LAZYTIME;
540 sb->s_flags &= ~MS_LAZYTIME;
545 set_opt(sbi, USRQUOTA);
548 set_opt(sbi, GRPQUOTA);
551 set_opt(sbi, PRJQUOTA);
554 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
559 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
564 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
568 case Opt_offusrjquota:
569 ret = f2fs_clear_qf_name(sb, USRQUOTA);
573 case Opt_offgrpjquota:
574 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
578 case Opt_offprjjquota:
579 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
583 case Opt_jqfmt_vfsold:
584 sbi->s_jquota_fmt = QFMT_VFS_OLD;
586 case Opt_jqfmt_vfsv0:
587 sbi->s_jquota_fmt = QFMT_VFS_V0;
589 case Opt_jqfmt_vfsv1:
590 sbi->s_jquota_fmt = QFMT_VFS_V1;
593 clear_opt(sbi, QUOTA);
594 clear_opt(sbi, USRQUOTA);
595 clear_opt(sbi, GRPQUOTA);
596 clear_opt(sbi, PRJQUOTA);
606 case Opt_offusrjquota:
607 case Opt_offgrpjquota:
608 case Opt_offprjjquota:
609 case Opt_jqfmt_vfsold:
610 case Opt_jqfmt_vfsv0:
611 case Opt_jqfmt_vfsv1:
613 f2fs_msg(sb, KERN_INFO,
614 "quota operations not supported");
618 f2fs_msg(sb, KERN_ERR,
619 "Unrecognized mount option \"%s\" or missing value",
625 if (f2fs_check_quota_options(sbi))
629 if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
630 f2fs_msg(sb, KERN_ERR,
631 "Should set mode=lfs with %uKB-sized IO",
632 F2FS_IO_SIZE_KB(sbi));
636 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
637 if (!test_opt(sbi, INLINE_XATTR)) {
638 f2fs_msg(sb, KERN_ERR,
639 "inline_xattr_size option should be "
640 "set with inline_xattr option");
643 if (!sbi->inline_xattr_size ||
644 sbi->inline_xattr_size >= DEF_ADDRS_PER_INODE -
645 F2FS_TOTAL_EXTRA_ATTR_SIZE -
646 DEF_INLINE_RESERVED_SIZE -
647 DEF_MIN_INLINE_SIZE) {
648 f2fs_msg(sb, KERN_ERR,
649 "inline xattr size is out of range");
656 static struct inode *f2fs_alloc_inode(struct super_block *sb)
658 struct f2fs_inode_info *fi;
660 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
664 init_once((void *) fi);
666 /* Initialize f2fs-specific inode info */
667 atomic_set(&fi->dirty_pages, 0);
668 fi->i_current_depth = 1;
670 init_rwsem(&fi->i_sem);
671 INIT_LIST_HEAD(&fi->dirty_list);
672 INIT_LIST_HEAD(&fi->gdirty_list);
673 INIT_LIST_HEAD(&fi->inmem_ilist);
674 INIT_LIST_HEAD(&fi->inmem_pages);
675 mutex_init(&fi->inmem_lock);
676 init_rwsem(&fi->dio_rwsem[READ]);
677 init_rwsem(&fi->dio_rwsem[WRITE]);
678 init_rwsem(&fi->i_mmap_sem);
679 init_rwsem(&fi->i_xattr_sem);
682 memset(&fi->i_dquot, 0, sizeof(fi->i_dquot));
683 fi->i_reserved_quota = 0;
685 /* Will be used by directory only */
686 fi->i_dir_level = F2FS_SB(sb)->dir_level;
688 return &fi->vfs_inode;
691 static int f2fs_drop_inode(struct inode *inode)
695 * This is to avoid a deadlock condition like below.
696 * writeback_single_inode(inode)
697 * - f2fs_write_data_page
698 * - f2fs_gc -> iput -> evict
699 * - inode_wait_for_writeback(inode)
701 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
702 if (!inode->i_nlink && !is_bad_inode(inode)) {
703 /* to avoid evict_inode call simultaneously */
704 atomic_inc(&inode->i_count);
705 spin_unlock(&inode->i_lock);
707 /* some remained atomic pages should discarded */
708 if (f2fs_is_atomic_file(inode))
709 drop_inmem_pages(inode);
711 /* should remain fi->extent_tree for writepage */
712 f2fs_destroy_extent_node(inode);
714 sb_start_intwrite(inode->i_sb);
715 f2fs_i_size_write(inode, 0);
717 if (F2FS_HAS_BLOCKS(inode))
718 f2fs_truncate(inode);
720 sb_end_intwrite(inode->i_sb);
722 spin_lock(&inode->i_lock);
723 atomic_dec(&inode->i_count);
725 trace_f2fs_drop_inode(inode, 0);
728 ret = generic_drop_inode(inode);
729 trace_f2fs_drop_inode(inode, ret);
733 int f2fs_inode_dirtied(struct inode *inode, bool sync)
735 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
738 spin_lock(&sbi->inode_lock[DIRTY_META]);
739 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
742 set_inode_flag(inode, FI_DIRTY_INODE);
743 stat_inc_dirty_inode(sbi, DIRTY_META);
745 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
746 list_add_tail(&F2FS_I(inode)->gdirty_list,
747 &sbi->inode_list[DIRTY_META]);
748 inc_page_count(sbi, F2FS_DIRTY_IMETA);
750 spin_unlock(&sbi->inode_lock[DIRTY_META]);
754 void f2fs_inode_synced(struct inode *inode)
756 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
758 spin_lock(&sbi->inode_lock[DIRTY_META]);
759 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
760 spin_unlock(&sbi->inode_lock[DIRTY_META]);
763 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
764 list_del_init(&F2FS_I(inode)->gdirty_list);
765 dec_page_count(sbi, F2FS_DIRTY_IMETA);
767 clear_inode_flag(inode, FI_DIRTY_INODE);
768 clear_inode_flag(inode, FI_AUTO_RECOVER);
769 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
770 spin_unlock(&sbi->inode_lock[DIRTY_META]);
774 * f2fs_dirty_inode() is called from __mark_inode_dirty()
776 * We should call set_dirty_inode to write the dirty inode through write_inode.
778 static void f2fs_dirty_inode(struct inode *inode, int flags)
780 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
782 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
783 inode->i_ino == F2FS_META_INO(sbi))
786 if (flags == I_DIRTY_TIME)
789 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
790 clear_inode_flag(inode, FI_AUTO_RECOVER);
792 f2fs_inode_dirtied(inode, false);
795 static void f2fs_i_callback(struct rcu_head *head)
797 struct inode *inode = container_of(head, struct inode, i_rcu);
798 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
801 static void f2fs_destroy_inode(struct inode *inode)
803 call_rcu(&inode->i_rcu, f2fs_i_callback);
806 static void destroy_percpu_info(struct f2fs_sb_info *sbi)
808 percpu_counter_destroy(&sbi->alloc_valid_block_count);
809 percpu_counter_destroy(&sbi->total_valid_inode_count);
812 static void destroy_device_list(struct f2fs_sb_info *sbi)
816 for (i = 0; i < sbi->s_ndevs; i++) {
817 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
818 #ifdef CONFIG_BLK_DEV_ZONED
819 kfree(FDEV(i).blkz_type);
825 static void f2fs_put_super(struct super_block *sb)
827 struct f2fs_sb_info *sbi = F2FS_SB(sb);
831 f2fs_quota_off_umount(sb);
833 /* prevent remaining shrinker jobs */
834 mutex_lock(&sbi->umount_mutex);
837 * We don't need to do checkpoint when superblock is clean.
838 * But, the previous checkpoint was not done by umount, it needs to do
839 * clean checkpoint again.
841 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
842 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
843 struct cp_control cpc = {
846 write_checkpoint(sbi, &cpc);
849 /* be sure to wait for any on-going discard commands */
850 dropped = f2fs_wait_discard_bios(sbi);
852 if (f2fs_discard_en(sbi) && !sbi->discard_blks && !dropped) {
853 struct cp_control cpc = {
854 .reason = CP_UMOUNT | CP_TRIMMED,
856 write_checkpoint(sbi, &cpc);
859 /* write_checkpoint can update stat informaion */
860 f2fs_destroy_stats(sbi);
863 * normally superblock is clean, so we need to release this.
864 * In addition, EIO will skip do checkpoint, we need this as well.
866 release_ino_entry(sbi, true);
868 f2fs_leave_shrinker(sbi);
869 mutex_unlock(&sbi->umount_mutex);
871 /* our cp_error case, we can wait for any writeback page */
872 f2fs_flush_merged_writes(sbi);
874 iput(sbi->node_inode);
875 iput(sbi->meta_inode);
877 /* destroy f2fs internal modules */
878 destroy_node_manager(sbi);
879 destroy_segment_manager(sbi);
883 f2fs_unregister_sysfs(sbi);
885 sb->s_fs_info = NULL;
886 if (sbi->s_chksum_driver)
887 crypto_free_shash(sbi->s_chksum_driver);
888 kfree(sbi->raw_super);
890 destroy_device_list(sbi);
891 if (sbi->write_io_dummy)
892 mempool_destroy(sbi->write_io_dummy);
894 for (i = 0; i < MAXQUOTAS; i++)
895 kfree(sbi->s_qf_names[i]);
897 destroy_percpu_info(sbi);
898 for (i = 0; i < NR_PAGE_TYPE; i++)
899 kfree(sbi->write_io[i]);
903 int f2fs_sync_fs(struct super_block *sb, int sync)
905 struct f2fs_sb_info *sbi = F2FS_SB(sb);
908 if (unlikely(f2fs_cp_error(sbi)))
911 trace_f2fs_sync_fs(sb, sync);
913 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
917 struct cp_control cpc;
919 cpc.reason = __get_cp_reason(sbi);
921 mutex_lock(&sbi->gc_mutex);
922 err = write_checkpoint(sbi, &cpc);
923 mutex_unlock(&sbi->gc_mutex);
925 f2fs_trace_ios(NULL, 1);
930 static int f2fs_freeze(struct super_block *sb)
932 if (f2fs_readonly(sb))
935 /* IO error happened before */
936 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
939 /* must be clean, since sync_filesystem() was already called */
940 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
945 static int f2fs_unfreeze(struct super_block *sb)
951 static int f2fs_statfs_project(struct super_block *sb,
952 kprojid_t projid, struct kstatfs *buf)
959 qid = make_kqid_projid(projid);
960 dquot = dqget(sb, qid);
962 return PTR_ERR(dquot);
963 spin_lock(&dq_data_lock);
965 limit = (dquot->dq_dqb.dqb_bsoftlimit ?
966 dquot->dq_dqb.dqb_bsoftlimit :
967 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
968 if (limit && buf->f_blocks > limit) {
969 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
970 buf->f_blocks = limit;
971 buf->f_bfree = buf->f_bavail =
972 (buf->f_blocks > curblock) ?
973 (buf->f_blocks - curblock) : 0;
976 limit = dquot->dq_dqb.dqb_isoftlimit ?
977 dquot->dq_dqb.dqb_isoftlimit :
978 dquot->dq_dqb.dqb_ihardlimit;
979 if (limit && buf->f_files > limit) {
980 buf->f_files = limit;
982 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
983 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
986 spin_unlock(&dq_data_lock);
992 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
994 struct super_block *sb = dentry->d_sb;
995 struct f2fs_sb_info *sbi = F2FS_SB(sb);
996 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
997 block_t total_count, user_block_count, start_count, ovp_count;
998 u64 avail_node_count;
1000 total_count = le64_to_cpu(sbi->raw_super->block_count);
1001 user_block_count = sbi->user_block_count;
1002 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
1003 ovp_count = SM_I(sbi)->ovp_segments << sbi->log_blocks_per_seg;
1004 buf->f_type = F2FS_SUPER_MAGIC;
1005 buf->f_bsize = sbi->blocksize;
1007 buf->f_blocks = total_count - start_count;
1008 buf->f_bfree = user_block_count - valid_user_blocks(sbi) + ovp_count;
1009 buf->f_bavail = user_block_count - valid_user_blocks(sbi) -
1010 sbi->current_reserved_blocks;
1012 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
1014 if (avail_node_count > user_block_count) {
1015 buf->f_files = user_block_count;
1016 buf->f_ffree = buf->f_bavail;
1018 buf->f_files = avail_node_count;
1019 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1023 buf->f_namelen = F2FS_NAME_LEN;
1024 buf->f_fsid.val[0] = (u32)id;
1025 buf->f_fsid.val[1] = (u32)(id >> 32);
1028 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1029 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1030 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1036 static inline void f2fs_show_quota_options(struct seq_file *seq,
1037 struct super_block *sb)
1040 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1042 if (sbi->s_jquota_fmt) {
1045 switch (sbi->s_jquota_fmt) {
1056 seq_printf(seq, ",jqfmt=%s", fmtname);
1059 if (sbi->s_qf_names[USRQUOTA])
1060 seq_show_option(seq, "usrjquota", sbi->s_qf_names[USRQUOTA]);
1062 if (sbi->s_qf_names[GRPQUOTA])
1063 seq_show_option(seq, "grpjquota", sbi->s_qf_names[GRPQUOTA]);
1065 if (sbi->s_qf_names[PRJQUOTA])
1066 seq_show_option(seq, "prjjquota", sbi->s_qf_names[PRJQUOTA]);
1070 static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1072 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1074 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1075 if (test_opt(sbi, FORCE_FG_GC))
1076 seq_printf(seq, ",background_gc=%s", "sync");
1078 seq_printf(seq, ",background_gc=%s", "on");
1080 seq_printf(seq, ",background_gc=%s", "off");
1082 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1083 seq_puts(seq, ",disable_roll_forward");
1084 if (test_opt(sbi, DISCARD))
1085 seq_puts(seq, ",discard");
1086 if (test_opt(sbi, NOHEAP))
1087 seq_puts(seq, ",no_heap");
1089 seq_puts(seq, ",heap");
1090 #ifdef CONFIG_F2FS_FS_XATTR
1091 if (test_opt(sbi, XATTR_USER))
1092 seq_puts(seq, ",user_xattr");
1094 seq_puts(seq, ",nouser_xattr");
1095 if (test_opt(sbi, INLINE_XATTR))
1096 seq_puts(seq, ",inline_xattr");
1098 seq_puts(seq, ",noinline_xattr");
1099 if (test_opt(sbi, INLINE_XATTR_SIZE))
1100 seq_printf(seq, ",inline_xattr_size=%u",
1101 sbi->inline_xattr_size);
1103 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1104 if (test_opt(sbi, POSIX_ACL))
1105 seq_puts(seq, ",acl");
1107 seq_puts(seq, ",noacl");
1109 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
1110 seq_puts(seq, ",disable_ext_identify");
1111 if (test_opt(sbi, INLINE_DATA))
1112 seq_puts(seq, ",inline_data");
1114 seq_puts(seq, ",noinline_data");
1115 if (test_opt(sbi, INLINE_DENTRY))
1116 seq_puts(seq, ",inline_dentry");
1118 seq_puts(seq, ",noinline_dentry");
1119 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
1120 seq_puts(seq, ",flush_merge");
1121 if (test_opt(sbi, NOBARRIER))
1122 seq_puts(seq, ",nobarrier");
1123 if (test_opt(sbi, FASTBOOT))
1124 seq_puts(seq, ",fastboot");
1125 if (test_opt(sbi, EXTENT_CACHE))
1126 seq_puts(seq, ",extent_cache");
1128 seq_puts(seq, ",noextent_cache");
1129 if (test_opt(sbi, DATA_FLUSH))
1130 seq_puts(seq, ",data_flush");
1132 seq_puts(seq, ",mode=");
1133 if (test_opt(sbi, ADAPTIVE))
1134 seq_puts(seq, "adaptive");
1135 else if (test_opt(sbi, LFS))
1136 seq_puts(seq, "lfs");
1137 seq_printf(seq, ",active_logs=%u", sbi->active_logs);
1138 if (F2FS_IO_SIZE_BITS(sbi))
1139 seq_printf(seq, ",io_size=%uKB", F2FS_IO_SIZE_KB(sbi));
1140 #ifdef CONFIG_F2FS_FAULT_INJECTION
1141 if (test_opt(sbi, FAULT_INJECTION))
1142 seq_printf(seq, ",fault_injection=%u",
1143 sbi->fault_info.inject_rate);
1146 if (test_opt(sbi, QUOTA))
1147 seq_puts(seq, ",quota");
1148 if (test_opt(sbi, USRQUOTA))
1149 seq_puts(seq, ",usrquota");
1150 if (test_opt(sbi, GRPQUOTA))
1151 seq_puts(seq, ",grpquota");
1152 if (test_opt(sbi, PRJQUOTA))
1153 seq_puts(seq, ",prjquota");
1155 f2fs_show_quota_options(seq, sbi->sb);
1160 static void default_options(struct f2fs_sb_info *sbi)
1162 /* init some FS parameters */
1163 sbi->active_logs = NR_CURSEG_TYPE;
1164 sbi->inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1166 set_opt(sbi, BG_GC);
1167 set_opt(sbi, INLINE_XATTR);
1168 set_opt(sbi, INLINE_DATA);
1169 set_opt(sbi, INLINE_DENTRY);
1170 set_opt(sbi, EXTENT_CACHE);
1171 set_opt(sbi, NOHEAP);
1172 sbi->sb->s_flags |= MS_LAZYTIME;
1173 set_opt(sbi, FLUSH_MERGE);
1174 if (f2fs_sb_mounted_blkzoned(sbi->sb)) {
1175 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1176 set_opt(sbi, DISCARD);
1178 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
1181 #ifdef CONFIG_F2FS_FS_XATTR
1182 set_opt(sbi, XATTR_USER);
1184 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1185 set_opt(sbi, POSIX_ACL);
1188 #ifdef CONFIG_F2FS_FAULT_INJECTION
1189 f2fs_build_fault_attr(sbi, 0);
1194 static int f2fs_enable_quotas(struct super_block *sb);
1196 static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1198 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1199 struct f2fs_mount_info org_mount_opt;
1200 unsigned long old_sb_flags;
1201 int err, active_logs;
1202 bool need_restart_gc = false;
1203 bool need_stop_gc = false;
1204 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
1205 #ifdef CONFIG_F2FS_FAULT_INJECTION
1206 struct f2fs_fault_info ffi = sbi->fault_info;
1210 char *s_qf_names[MAXQUOTAS];
1215 * Save the old mount options in case we
1216 * need to restore them.
1218 org_mount_opt = sbi->mount_opt;
1219 old_sb_flags = sb->s_flags;
1220 active_logs = sbi->active_logs;
1223 s_jquota_fmt = sbi->s_jquota_fmt;
1224 for (i = 0; i < MAXQUOTAS; i++) {
1225 if (sbi->s_qf_names[i]) {
1226 s_qf_names[i] = kstrdup(sbi->s_qf_names[i],
1228 if (!s_qf_names[i]) {
1229 for (j = 0; j < i; j++)
1230 kfree(s_qf_names[j]);
1234 s_qf_names[i] = NULL;
1239 /* recover superblocks we couldn't write due to previous RO mount */
1240 if (!(*flags & MS_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
1241 err = f2fs_commit_super(sbi, false);
1242 f2fs_msg(sb, KERN_INFO,
1243 "Try to recover all the superblocks, ret: %d", err);
1245 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1248 default_options(sbi);
1250 /* parse mount options */
1251 err = parse_options(sb, data);
1256 * Previous and new state of filesystem is RO,
1257 * so skip checking GC and FLUSH_MERGE conditions.
1259 if (f2fs_readonly(sb) && (*flags & MS_RDONLY))
1263 if (!f2fs_readonly(sb) && (*flags & MS_RDONLY)) {
1264 err = dquot_suspend(sb, -1);
1268 /* dquot_resume needs RW */
1269 sb->s_flags &= ~MS_RDONLY;
1270 if (sb_any_quota_suspended(sb)) {
1271 dquot_resume(sb, -1);
1272 } else if (f2fs_sb_has_quota_ino(sb)) {
1273 err = f2fs_enable_quotas(sb);
1279 /* disallow enable/disable extent_cache dynamically */
1280 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1282 f2fs_msg(sbi->sb, KERN_WARNING,
1283 "switch extent_cache option is not allowed");
1288 * We stop the GC thread if FS is mounted as RO
1289 * or if background_gc = off is passed in mount
1290 * option. Also sync the filesystem.
1292 if ((*flags & MS_RDONLY) || !test_opt(sbi, BG_GC)) {
1293 if (sbi->gc_thread) {
1294 stop_gc_thread(sbi);
1295 need_restart_gc = true;
1297 } else if (!sbi->gc_thread) {
1298 err = start_gc_thread(sbi);
1301 need_stop_gc = true;
1304 if (*flags & MS_RDONLY) {
1305 writeback_inodes_sb(sb, WB_REASON_SYNC);
1308 set_sbi_flag(sbi, SBI_IS_DIRTY);
1309 set_sbi_flag(sbi, SBI_IS_CLOSE);
1310 f2fs_sync_fs(sb, 1);
1311 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1315 * We stop issue flush thread if FS is mounted as RO
1316 * or if flush_merge is not passed in mount option.
1318 if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
1319 clear_opt(sbi, FLUSH_MERGE);
1320 destroy_flush_cmd_control(sbi, false);
1322 err = create_flush_cmd_control(sbi);
1328 /* Release old quota file names */
1329 for (i = 0; i < MAXQUOTAS; i++)
1330 kfree(s_qf_names[i]);
1332 /* Update the POSIXACL Flag */
1333 sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
1334 (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0);
1338 if (need_restart_gc) {
1339 if (start_gc_thread(sbi))
1340 f2fs_msg(sbi->sb, KERN_WARNING,
1341 "background gc thread has stopped");
1342 } else if (need_stop_gc) {
1343 stop_gc_thread(sbi);
1347 sbi->s_jquota_fmt = s_jquota_fmt;
1348 for (i = 0; i < MAXQUOTAS; i++) {
1349 kfree(sbi->s_qf_names[i]);
1350 sbi->s_qf_names[i] = s_qf_names[i];
1353 sbi->mount_opt = org_mount_opt;
1354 sbi->active_logs = active_logs;
1355 sb->s_flags = old_sb_flags;
1356 #ifdef CONFIG_F2FS_FAULT_INJECTION
1357 sbi->fault_info = ffi;
1363 /* Read data from quotafile */
1364 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1365 size_t len, loff_t off)
1367 struct inode *inode = sb_dqopt(sb)->files[type];
1368 struct address_space *mapping = inode->i_mapping;
1369 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1370 int offset = off & (sb->s_blocksize - 1);
1373 loff_t i_size = i_size_read(inode);
1380 if (off + len > i_size)
1383 while (toread > 0) {
1384 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1386 page = read_mapping_page(mapping, blkidx, NULL);
1388 if (PTR_ERR(page) == -ENOMEM) {
1389 congestion_wait(BLK_RW_ASYNC, HZ/50);
1392 return PTR_ERR(page);
1397 if (unlikely(page->mapping != mapping)) {
1398 f2fs_put_page(page, 1);
1401 if (unlikely(!PageUptodate(page))) {
1402 f2fs_put_page(page, 1);
1406 kaddr = kmap_atomic(page);
1407 memcpy(data, kaddr + offset, tocopy);
1408 kunmap_atomic(kaddr);
1409 f2fs_put_page(page, 1);
1419 /* Write to quotafile */
1420 static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1421 const char *data, size_t len, loff_t off)
1423 struct inode *inode = sb_dqopt(sb)->files[type];
1424 struct address_space *mapping = inode->i_mapping;
1425 const struct address_space_operations *a_ops = mapping->a_ops;
1426 int offset = off & (sb->s_blocksize - 1);
1427 size_t towrite = len;
1433 while (towrite > 0) {
1434 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1437 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1439 if (unlikely(err)) {
1440 if (err == -ENOMEM) {
1441 congestion_wait(BLK_RW_ASYNC, HZ/50);
1447 kaddr = kmap_atomic(page);
1448 memcpy(kaddr + offset, data, tocopy);
1449 kunmap_atomic(kaddr);
1450 flush_dcache_page(page);
1452 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1463 inode->i_mtime = inode->i_ctime = current_time(inode);
1464 f2fs_mark_inode_dirty_sync(inode, false);
1465 return len - towrite;
1468 static struct dquot **f2fs_get_dquots(struct inode *inode)
1470 return F2FS_I(inode)->i_dquot;
1473 static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1475 return &F2FS_I(inode)->i_reserved_quota;
1478 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1480 return dquot_quota_on_mount(sbi->sb, sbi->s_qf_names[type],
1481 sbi->s_jquota_fmt, type);
1484 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
1489 if (f2fs_sb_has_quota_ino(sbi->sb) && rdonly) {
1490 err = f2fs_enable_quotas(sbi->sb);
1492 f2fs_msg(sbi->sb, KERN_ERR,
1493 "Cannot turn on quota_ino: %d", err);
1499 for (i = 0; i < MAXQUOTAS; i++) {
1500 if (sbi->s_qf_names[i]) {
1501 err = f2fs_quota_on_mount(sbi, i);
1506 f2fs_msg(sbi->sb, KERN_ERR,
1507 "Cannot turn on quotas: %d on %d", err, i);
1513 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1516 struct inode *qf_inode;
1517 unsigned long qf_inum;
1520 BUG_ON(!f2fs_sb_has_quota_ino(sb));
1522 qf_inum = f2fs_qf_ino(sb, type);
1526 qf_inode = f2fs_iget(sb, qf_inum);
1527 if (IS_ERR(qf_inode)) {
1528 f2fs_msg(sb, KERN_ERR,
1529 "Bad quota inode %u:%lu", type, qf_inum);
1530 return PTR_ERR(qf_inode);
1533 /* Don't account quota for quota files to avoid recursion */
1534 qf_inode->i_flags |= S_NOQUOTA;
1535 err = dquot_enable(qf_inode, type, format_id, flags);
1540 static int f2fs_enable_quotas(struct super_block *sb)
1543 unsigned long qf_inum;
1544 bool quota_mopt[MAXQUOTAS] = {
1545 test_opt(F2FS_SB(sb), USRQUOTA),
1546 test_opt(F2FS_SB(sb), GRPQUOTA),
1547 test_opt(F2FS_SB(sb), PRJQUOTA),
1550 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1551 for (type = 0; type < MAXQUOTAS; type++) {
1552 qf_inum = f2fs_qf_ino(sb, type);
1554 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1555 DQUOT_USAGE_ENABLED |
1556 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1558 f2fs_msg(sb, KERN_ERR,
1559 "Failed to enable quota tracking "
1560 "(type=%d, err=%d). Please run "
1561 "fsck to fix.", type, err);
1562 for (type--; type >= 0; type--)
1563 dquot_quota_off(sb, type);
1571 static int f2fs_quota_sync(struct super_block *sb, int type)
1573 struct quota_info *dqopt = sb_dqopt(sb);
1577 ret = dquot_writeback_dquots(sb, type);
1582 * Now when everything is written we can discard the pagecache so
1583 * that userspace sees the changes.
1585 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
1586 if (type != -1 && cnt != type)
1588 if (!sb_has_quota_active(sb, cnt))
1591 ret = filemap_write_and_wait(dqopt->files[cnt]->i_mapping);
1595 inode_lock(dqopt->files[cnt]);
1596 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
1597 inode_unlock(dqopt->files[cnt]);
1602 static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
1605 struct inode *inode;
1608 err = f2fs_quota_sync(sb, type);
1612 err = dquot_quota_on(sb, type, format_id, path);
1616 inode = d_inode(path->dentry);
1619 F2FS_I(inode)->i_flags |= FS_NOATIME_FL | FS_IMMUTABLE_FL;
1620 inode_set_flags(inode, S_NOATIME | S_IMMUTABLE,
1621 S_NOATIME | S_IMMUTABLE);
1622 inode_unlock(inode);
1623 f2fs_mark_inode_dirty_sync(inode, false);
1628 static int f2fs_quota_off(struct super_block *sb, int type)
1630 struct inode *inode = sb_dqopt(sb)->files[type];
1633 if (!inode || !igrab(inode))
1634 return dquot_quota_off(sb, type);
1636 f2fs_quota_sync(sb, type);
1638 err = dquot_quota_off(sb, type);
1639 if (err || f2fs_sb_has_quota_ino(sb))
1643 F2FS_I(inode)->i_flags &= ~(FS_NOATIME_FL | FS_IMMUTABLE_FL);
1644 inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE);
1645 inode_unlock(inode);
1646 f2fs_mark_inode_dirty_sync(inode, false);
1652 void f2fs_quota_off_umount(struct super_block *sb)
1656 for (type = 0; type < MAXQUOTAS; type++)
1657 f2fs_quota_off(sb, type);
1661 int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
1663 *projid = F2FS_I(inode)->i_projid;
1668 static const struct dquot_operations f2fs_quota_operations = {
1669 .get_reserved_space = f2fs_get_reserved_space,
1670 .write_dquot = dquot_commit,
1671 .acquire_dquot = dquot_acquire,
1672 .release_dquot = dquot_release,
1673 .mark_dirty = dquot_mark_dquot_dirty,
1674 .write_info = dquot_commit_info,
1675 .alloc_dquot = dquot_alloc,
1676 .destroy_dquot = dquot_destroy,
1678 .get_projid = f2fs_get_projid,
1679 .get_next_id = dquot_get_next_id,
1683 static const struct quotactl_ops f2fs_quotactl_ops = {
1684 .quota_on = f2fs_quota_on,
1685 .quota_off = f2fs_quota_off,
1686 .quota_sync = f2fs_quota_sync,
1687 .get_state = dquot_get_state,
1688 .set_info = dquot_set_dqinfo,
1689 .get_dqblk = dquot_get_dqblk,
1690 .set_dqblk = dquot_set_dqblk,
1693 void f2fs_quota_off_umount(struct super_block *sb)
1698 static const struct super_operations f2fs_sops = {
1699 .alloc_inode = f2fs_alloc_inode,
1700 .drop_inode = f2fs_drop_inode,
1701 .destroy_inode = f2fs_destroy_inode,
1702 .write_inode = f2fs_write_inode,
1703 .dirty_inode = f2fs_dirty_inode,
1704 .show_options = f2fs_show_options,
1706 .quota_read = f2fs_quota_read,
1707 .quota_write = f2fs_quota_write,
1708 .get_dquots = f2fs_get_dquots,
1710 .evict_inode = f2fs_evict_inode,
1711 .put_super = f2fs_put_super,
1712 .sync_fs = f2fs_sync_fs,
1713 .freeze_fs = f2fs_freeze,
1714 .unfreeze_fs = f2fs_unfreeze,
1715 .statfs = f2fs_statfs,
1716 .remount_fs = f2fs_remount,
1719 #ifdef CONFIG_F2FS_FS_ENCRYPTION
1720 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
1722 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
1723 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
1727 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
1730 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
1731 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
1732 ctx, len, fs_data, XATTR_CREATE);
1735 static unsigned f2fs_max_namelen(struct inode *inode)
1737 return S_ISLNK(inode->i_mode) ?
1738 inode->i_sb->s_blocksize : F2FS_NAME_LEN;
1741 static const struct fscrypt_operations f2fs_cryptops = {
1742 .key_prefix = "f2fs:",
1743 .get_context = f2fs_get_context,
1744 .set_context = f2fs_set_context,
1745 .empty_dir = f2fs_empty_dir,
1746 .max_namelen = f2fs_max_namelen,
1750 static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
1751 u64 ino, u32 generation)
1753 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1754 struct inode *inode;
1756 if (check_nid_range(sbi, ino))
1757 return ERR_PTR(-ESTALE);
1760 * f2fs_iget isn't quite right if the inode is currently unallocated!
1761 * However f2fs_iget currently does appropriate checks to handle stale
1762 * inodes so everything is OK.
1764 inode = f2fs_iget(sb, ino);
1766 return ERR_CAST(inode);
1767 if (unlikely(generation && inode->i_generation != generation)) {
1768 /* we didn't find the right inode.. */
1770 return ERR_PTR(-ESTALE);
1775 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
1776 int fh_len, int fh_type)
1778 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
1779 f2fs_nfs_get_inode);
1782 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
1783 int fh_len, int fh_type)
1785 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
1786 f2fs_nfs_get_inode);
1789 static const struct export_operations f2fs_export_ops = {
1790 .fh_to_dentry = f2fs_fh_to_dentry,
1791 .fh_to_parent = f2fs_fh_to_parent,
1792 .get_parent = f2fs_get_parent,
1795 static loff_t max_file_blocks(void)
1798 loff_t leaf_count = ADDRS_PER_BLOCK;
1801 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
1802 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
1803 * space in inode.i_addr, it will be more safe to reassign
1807 /* two direct node blocks */
1808 result += (leaf_count * 2);
1810 /* two indirect node blocks */
1811 leaf_count *= NIDS_PER_BLOCK;
1812 result += (leaf_count * 2);
1814 /* one double indirect node block */
1815 leaf_count *= NIDS_PER_BLOCK;
1816 result += leaf_count;
1821 static int __f2fs_commit_super(struct buffer_head *bh,
1822 struct f2fs_super_block *super)
1826 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
1827 set_buffer_uptodate(bh);
1828 set_buffer_dirty(bh);
1831 /* it's rare case, we can do fua all the time */
1832 return __sync_dirty_buffer(bh, WRITE_FLUSH_FUA);
1835 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
1836 struct buffer_head *bh)
1838 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
1839 (bh->b_data + F2FS_SUPER_OFFSET);
1840 struct super_block *sb = sbi->sb;
1841 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
1842 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
1843 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
1844 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
1845 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
1846 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
1847 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
1848 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
1849 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
1850 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
1851 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
1852 u32 segment_count = le32_to_cpu(raw_super->segment_count);
1853 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
1854 u64 main_end_blkaddr = main_blkaddr +
1855 (segment_count_main << log_blocks_per_seg);
1856 u64 seg_end_blkaddr = segment0_blkaddr +
1857 (segment_count << log_blocks_per_seg);
1859 if (segment0_blkaddr != cp_blkaddr) {
1860 f2fs_msg(sb, KERN_INFO,
1861 "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
1862 segment0_blkaddr, cp_blkaddr);
1866 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
1868 f2fs_msg(sb, KERN_INFO,
1869 "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
1870 cp_blkaddr, sit_blkaddr,
1871 segment_count_ckpt << log_blocks_per_seg);
1875 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
1877 f2fs_msg(sb, KERN_INFO,
1878 "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
1879 sit_blkaddr, nat_blkaddr,
1880 segment_count_sit << log_blocks_per_seg);
1884 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
1886 f2fs_msg(sb, KERN_INFO,
1887 "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
1888 nat_blkaddr, ssa_blkaddr,
1889 segment_count_nat << log_blocks_per_seg);
1893 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
1895 f2fs_msg(sb, KERN_INFO,
1896 "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
1897 ssa_blkaddr, main_blkaddr,
1898 segment_count_ssa << log_blocks_per_seg);
1902 if (main_end_blkaddr > seg_end_blkaddr) {
1903 f2fs_msg(sb, KERN_INFO,
1904 "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
1907 (segment_count << log_blocks_per_seg),
1908 segment_count_main << log_blocks_per_seg);
1910 } else if (main_end_blkaddr < seg_end_blkaddr) {
1914 /* fix in-memory information all the time */
1915 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
1916 segment0_blkaddr) >> log_blocks_per_seg);
1918 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
1919 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1922 err = __f2fs_commit_super(bh, NULL);
1923 res = err ? "failed" : "done";
1925 f2fs_msg(sb, KERN_INFO,
1926 "Fix alignment : %s, start(%u) end(%u) block(%u)",
1929 (segment_count << log_blocks_per_seg),
1930 segment_count_main << log_blocks_per_seg);
1937 static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
1938 struct buffer_head *bh)
1940 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
1941 (bh->b_data + F2FS_SUPER_OFFSET);
1942 struct super_block *sb = sbi->sb;
1943 unsigned int blocksize;
1945 if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) {
1946 f2fs_msg(sb, KERN_INFO,
1947 "Magic Mismatch, valid(0x%x) - read(0x%x)",
1948 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
1952 /* Currently, support only 4KB page cache size */
1953 if (F2FS_BLKSIZE != PAGE_SIZE) {
1954 f2fs_msg(sb, KERN_INFO,
1955 "Invalid page_cache_size (%lu), supports only 4KB\n",
1960 /* Currently, support only 4KB block size */
1961 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
1962 if (blocksize != F2FS_BLKSIZE) {
1963 f2fs_msg(sb, KERN_INFO,
1964 "Invalid blocksize (%u), supports only 4KB\n",
1969 /* check log blocks per segment */
1970 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
1971 f2fs_msg(sb, KERN_INFO,
1972 "Invalid log blocks per segment (%u)\n",
1973 le32_to_cpu(raw_super->log_blocks_per_seg));
1977 /* Currently, support 512/1024/2048/4096 bytes sector size */
1978 if (le32_to_cpu(raw_super->log_sectorsize) >
1979 F2FS_MAX_LOG_SECTOR_SIZE ||
1980 le32_to_cpu(raw_super->log_sectorsize) <
1981 F2FS_MIN_LOG_SECTOR_SIZE) {
1982 f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)",
1983 le32_to_cpu(raw_super->log_sectorsize));
1986 if (le32_to_cpu(raw_super->log_sectors_per_block) +
1987 le32_to_cpu(raw_super->log_sectorsize) !=
1988 F2FS_MAX_LOG_SECTOR_SIZE) {
1989 f2fs_msg(sb, KERN_INFO,
1990 "Invalid log sectors per block(%u) log sectorsize(%u)",
1991 le32_to_cpu(raw_super->log_sectors_per_block),
1992 le32_to_cpu(raw_super->log_sectorsize));
1996 /* check reserved ino info */
1997 if (le32_to_cpu(raw_super->node_ino) != 1 ||
1998 le32_to_cpu(raw_super->meta_ino) != 2 ||
1999 le32_to_cpu(raw_super->root_ino) != 3) {
2000 f2fs_msg(sb, KERN_INFO,
2001 "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2002 le32_to_cpu(raw_super->node_ino),
2003 le32_to_cpu(raw_super->meta_ino),
2004 le32_to_cpu(raw_super->root_ino));
2008 if (le32_to_cpu(raw_super->segment_count) > F2FS_MAX_SEGMENT) {
2009 f2fs_msg(sb, KERN_INFO,
2010 "Invalid segment count (%u)",
2011 le32_to_cpu(raw_super->segment_count));
2015 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
2016 if (sanity_check_area_boundary(sbi, bh))
2022 int sanity_check_ckpt(struct f2fs_sb_info *sbi)
2024 unsigned int total, fsmeta;
2025 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2026 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2027 unsigned int ovp_segments, reserved_segments;
2028 unsigned int main_segs, blocks_per_seg;
2031 total = le32_to_cpu(raw_super->segment_count);
2032 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
2033 fsmeta += le32_to_cpu(raw_super->segment_count_sit);
2034 fsmeta += le32_to_cpu(raw_super->segment_count_nat);
2035 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2036 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2038 if (unlikely(fsmeta >= total))
2041 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2042 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2044 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2045 ovp_segments == 0 || reserved_segments == 0)) {
2046 f2fs_msg(sbi->sb, KERN_ERR,
2047 "Wrong layout: check mkfs.f2fs version");
2051 main_segs = le32_to_cpu(raw_super->segment_count_main);
2052 blocks_per_seg = sbi->blocks_per_seg;
2054 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2055 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2056 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2059 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2060 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2061 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2065 if (unlikely(f2fs_cp_error(sbi))) {
2066 f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck");
2072 static void init_sb_info(struct f2fs_sb_info *sbi)
2074 struct f2fs_super_block *raw_super = sbi->raw_super;
2077 sbi->log_sectors_per_block =
2078 le32_to_cpu(raw_super->log_sectors_per_block);
2079 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2080 sbi->blocksize = 1 << sbi->log_blocksize;
2081 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2082 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2083 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2084 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2085 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2086 sbi->total_node_count =
2087 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2088 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2089 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2090 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2091 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
2092 sbi->cur_victim_sec = NULL_SECNO;
2093 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
2095 sbi->dir_level = DEF_DIR_LEVEL;
2096 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
2097 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
2098 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2100 for (i = 0; i < NR_COUNT_TYPE; i++)
2101 atomic_set(&sbi->nr_pages[i], 0);
2103 atomic_set(&sbi->wb_sync_req, 0);
2105 INIT_LIST_HEAD(&sbi->s_list);
2106 mutex_init(&sbi->umount_mutex);
2107 for (i = 0; i < NR_PAGE_TYPE - 1; i++)
2108 for (j = HOT; j < NR_TEMP_TYPE; j++)
2109 mutex_init(&sbi->wio_mutex[i][j]);
2110 spin_lock_init(&sbi->cp_lock);
2112 sbi->dirty_device = 0;
2113 spin_lock_init(&sbi->dev_lock);
2116 static int init_percpu_info(struct f2fs_sb_info *sbi)
2120 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2124 return percpu_counter_init(&sbi->total_valid_inode_count, 0,
2128 #ifdef CONFIG_BLK_DEV_ZONED
2129 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
2131 struct block_device *bdev = FDEV(devi).bdev;
2132 sector_t nr_sectors = bdev->bd_part->nr_sects;
2133 sector_t sector = 0;
2134 struct blk_zone *zones;
2135 unsigned int i, nr_zones;
2139 if (!f2fs_sb_mounted_blkzoned(sbi->sb))
2142 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
2143 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
2145 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
2146 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2147 __ilog2_u32(sbi->blocks_per_blkz))
2149 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
2150 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2151 sbi->log_blocks_per_blkz;
2152 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
2153 FDEV(devi).nr_blkz++;
2155 FDEV(devi).blkz_type = kmalloc(FDEV(devi).nr_blkz, GFP_KERNEL);
2156 if (!FDEV(devi).blkz_type)
2159 #define F2FS_REPORT_NR_ZONES 4096
2161 zones = kcalloc(F2FS_REPORT_NR_ZONES, sizeof(struct blk_zone),
2166 /* Get block zones type */
2167 while (zones && sector < nr_sectors) {
2169 nr_zones = F2FS_REPORT_NR_ZONES;
2170 err = blkdev_report_zones(bdev, sector,
2180 for (i = 0; i < nr_zones; i++) {
2181 FDEV(devi).blkz_type[n] = zones[i].type;
2182 sector += zones[i].len;
2194 * Read f2fs raw super block.
2195 * Because we have two copies of super block, so read both of them
2196 * to get the first valid one. If any one of them is broken, we pass
2197 * them recovery flag back to the caller.
2199 static int read_raw_super_block(struct f2fs_sb_info *sbi,
2200 struct f2fs_super_block **raw_super,
2201 int *valid_super_block, int *recovery)
2203 struct super_block *sb = sbi->sb;
2205 struct buffer_head *bh;
2206 struct f2fs_super_block *super;
2209 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2213 for (block = 0; block < 2; block++) {
2214 bh = sb_bread(sb, block);
2216 f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock",
2222 /* sanity checking of raw super */
2223 if (sanity_check_raw_super(sbi, bh)) {
2224 f2fs_msg(sb, KERN_ERR,
2225 "Can't find valid F2FS filesystem in %dth superblock",
2233 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2235 *valid_super_block = block;
2241 /* Fail to read any one of the superblocks*/
2245 /* No valid superblock */
2254 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
2256 struct buffer_head *bh;
2259 if ((recover && f2fs_readonly(sbi->sb)) ||
2260 bdev_read_only(sbi->sb->s_bdev)) {
2261 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2265 /* write back-up superblock first */
2266 bh = sb_getblk(sbi->sb, sbi->valid_super_block ? 0: 1);
2269 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2272 /* if we are in recovery path, skip writing valid superblock */
2276 /* write current valid superblock */
2277 bh = sb_getblk(sbi->sb, sbi->valid_super_block);
2280 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2285 static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
2287 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2288 unsigned int max_devices = MAX_DEVICES;
2291 /* Initialize single device information */
2292 if (!RDEV(0).path[0]) {
2293 #ifdef CONFIG_BLK_DEV_ZONED
2294 if (!bdev_is_zoned(sbi->sb->s_bdev))
2303 * Initialize multiple devices information, or single
2304 * zoned block device information.
2306 sbi->devs = kcalloc(max_devices, sizeof(struct f2fs_dev_info),
2311 for (i = 0; i < max_devices; i++) {
2313 if (i > 0 && !RDEV(i).path[0])
2316 if (max_devices == 1) {
2317 /* Single zoned block device mount */
2319 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
2320 sbi->sb->s_mode, sbi->sb->s_type);
2322 /* Multi-device mount */
2323 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
2324 FDEV(i).total_segments =
2325 le32_to_cpu(RDEV(i).total_segments);
2327 FDEV(i).start_blk = 0;
2328 FDEV(i).end_blk = FDEV(i).start_blk +
2329 (FDEV(i).total_segments <<
2330 sbi->log_blocks_per_seg) - 1 +
2331 le32_to_cpu(raw_super->segment0_blkaddr);
2333 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
2334 FDEV(i).end_blk = FDEV(i).start_blk +
2335 (FDEV(i).total_segments <<
2336 sbi->log_blocks_per_seg) - 1;
2338 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
2339 sbi->sb->s_mode, sbi->sb->s_type);
2341 if (IS_ERR(FDEV(i).bdev))
2342 return PTR_ERR(FDEV(i).bdev);
2344 /* to release errored devices */
2345 sbi->s_ndevs = i + 1;
2347 #ifdef CONFIG_BLK_DEV_ZONED
2348 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
2349 !f2fs_sb_mounted_blkzoned(sbi->sb)) {
2350 f2fs_msg(sbi->sb, KERN_ERR,
2351 "Zoned block device feature not enabled\n");
2354 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
2355 if (init_blkz_info(sbi, i)) {
2356 f2fs_msg(sbi->sb, KERN_ERR,
2357 "Failed to initialize F2FS blkzone information");
2360 if (max_devices == 1)
2362 f2fs_msg(sbi->sb, KERN_INFO,
2363 "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
2365 FDEV(i).total_segments,
2366 FDEV(i).start_blk, FDEV(i).end_blk,
2367 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
2368 "Host-aware" : "Host-managed");
2372 f2fs_msg(sbi->sb, KERN_INFO,
2373 "Mount Device [%2d]: %20s, %8u, %8x - %8x",
2375 FDEV(i).total_segments,
2376 FDEV(i).start_blk, FDEV(i).end_blk);
2378 f2fs_msg(sbi->sb, KERN_INFO,
2379 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
2383 static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
2385 struct f2fs_sb_info *sbi;
2386 struct f2fs_super_block *raw_super;
2389 bool retry = true, need_fsck = false;
2390 char *options = NULL;
2391 int recovery, i, valid_super_block;
2392 struct curseg_info *seg_i;
2397 valid_super_block = -1;
2400 /* allocate memory for f2fs-specific super block info */
2401 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
2407 /* Load the checksum driver */
2408 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
2409 if (IS_ERR(sbi->s_chksum_driver)) {
2410 f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver.");
2411 err = PTR_ERR(sbi->s_chksum_driver);
2412 sbi->s_chksum_driver = NULL;
2416 /* set a block size */
2417 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
2418 f2fs_msg(sb, KERN_ERR, "unable to set blocksize");
2422 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
2427 sb->s_fs_info = sbi;
2428 sbi->raw_super = raw_super;
2430 /* precompute checksum seed for metadata */
2431 if (f2fs_sb_has_inode_chksum(sb))
2432 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
2433 sizeof(raw_super->uuid));
2436 * The BLKZONED feature indicates that the drive was formatted with
2437 * zone alignment optimization. This is optional for host-aware
2438 * devices, but mandatory for host-managed zoned block devices.
2440 #ifndef CONFIG_BLK_DEV_ZONED
2441 if (f2fs_sb_mounted_blkzoned(sb)) {
2442 f2fs_msg(sb, KERN_ERR,
2443 "Zoned block device support is not enabled\n");
2448 default_options(sbi);
2449 /* parse mount options */
2450 options = kstrdup((const char *)data, GFP_KERNEL);
2451 if (data && !options) {
2456 err = parse_options(sb, options);
2460 sbi->max_file_blocks = max_file_blocks();
2461 sb->s_maxbytes = sbi->max_file_blocks <<
2462 le32_to_cpu(raw_super->log_blocksize);
2463 sb->s_max_links = F2FS_LINK_MAX;
2464 get_random_bytes(&sbi->s_next_generation, sizeof(u32));
2467 sb->dq_op = &f2fs_quota_operations;
2468 if (f2fs_sb_has_quota_ino(sb))
2469 sb->s_qcop = &dquot_quotactl_sysfile_ops;
2471 sb->s_qcop = &f2fs_quotactl_ops;
2472 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
2475 sb->s_op = &f2fs_sops;
2476 #ifdef CONFIG_F2FS_FS_ENCRYPTION
2477 sb->s_cop = &f2fs_cryptops;
2479 sb->s_xattr = f2fs_xattr_handlers;
2480 sb->s_export_op = &f2fs_export_ops;
2481 sb->s_magic = F2FS_SUPER_MAGIC;
2482 sb->s_time_gran = 1;
2483 sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
2484 (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0);
2485 memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
2487 /* init f2fs-specific super block info */
2488 sbi->valid_super_block = valid_super_block;
2489 mutex_init(&sbi->gc_mutex);
2490 mutex_init(&sbi->cp_mutex);
2491 init_rwsem(&sbi->node_write);
2492 init_rwsem(&sbi->node_change);
2494 /* disallow all the data/node/meta page writes */
2495 set_sbi_flag(sbi, SBI_POR_DOING);
2496 spin_lock_init(&sbi->stat_lock);
2498 /* init iostat info */
2499 spin_lock_init(&sbi->iostat_lock);
2500 sbi->iostat_enable = false;
2502 for (i = 0; i < NR_PAGE_TYPE; i++) {
2503 int n = (i == META) ? 1: NR_TEMP_TYPE;
2506 sbi->write_io[i] = kmalloc(n * sizeof(struct f2fs_bio_info),
2508 if (!sbi->write_io[i]) {
2513 for (j = HOT; j < n; j++) {
2514 init_rwsem(&sbi->write_io[i][j].io_rwsem);
2515 sbi->write_io[i][j].sbi = sbi;
2516 sbi->write_io[i][j].bio = NULL;
2517 spin_lock_init(&sbi->write_io[i][j].io_lock);
2518 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
2522 init_rwsem(&sbi->cp_rwsem);
2523 init_waitqueue_head(&sbi->cp_wait);
2526 err = init_percpu_info(sbi);
2530 if (F2FS_IO_SIZE(sbi) > 1) {
2531 sbi->write_io_dummy =
2532 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
2533 if (!sbi->write_io_dummy) {
2539 /* get an inode for meta space */
2540 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
2541 if (IS_ERR(sbi->meta_inode)) {
2542 f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode");
2543 err = PTR_ERR(sbi->meta_inode);
2547 err = get_valid_checkpoint(sbi);
2549 f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint");
2550 goto free_meta_inode;
2553 /* Initialize device list */
2554 err = f2fs_scan_devices(sbi);
2556 f2fs_msg(sb, KERN_ERR, "Failed to find devices");
2560 sbi->total_valid_node_count =
2561 le32_to_cpu(sbi->ckpt->valid_node_count);
2562 percpu_counter_set(&sbi->total_valid_inode_count,
2563 le32_to_cpu(sbi->ckpt->valid_inode_count));
2564 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
2565 sbi->total_valid_block_count =
2566 le64_to_cpu(sbi->ckpt->valid_block_count);
2567 sbi->last_valid_block_count = sbi->total_valid_block_count;
2568 sbi->reserved_blocks = 0;
2569 sbi->current_reserved_blocks = 0;
2571 for (i = 0; i < NR_INODE_TYPE; i++) {
2572 INIT_LIST_HEAD(&sbi->inode_list[i]);
2573 spin_lock_init(&sbi->inode_lock[i]);
2576 init_extent_cache_info(sbi);
2578 init_ino_entry_info(sbi);
2580 /* setup f2fs internal modules */
2581 err = build_segment_manager(sbi);
2583 f2fs_msg(sb, KERN_ERR,
2584 "Failed to initialize F2FS segment manager");
2587 err = build_node_manager(sbi);
2589 f2fs_msg(sb, KERN_ERR,
2590 "Failed to initialize F2FS node manager");
2594 /* For write statistics */
2595 if (sb->s_bdev->bd_part)
2596 sbi->sectors_written_start =
2597 (u64)part_stat_read(sb->s_bdev->bd_part, sectors[1]);
2599 /* Read accumulated write IO statistics if exists */
2600 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
2601 if (__exist_node_summaries(sbi))
2602 sbi->kbytes_written =
2603 le64_to_cpu(seg_i->journal->info.kbytes_written);
2605 build_gc_manager(sbi);
2607 /* get an inode for node space */
2608 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
2609 if (IS_ERR(sbi->node_inode)) {
2610 f2fs_msg(sb, KERN_ERR, "Failed to read node inode");
2611 err = PTR_ERR(sbi->node_inode);
2615 f2fs_join_shrinker(sbi);
2617 err = f2fs_build_stats(sbi);
2621 /* read root inode and dentry */
2622 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
2624 f2fs_msg(sb, KERN_ERR, "Failed to read root inode");
2625 err = PTR_ERR(root);
2626 goto free_node_inode;
2628 if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
2631 goto free_node_inode;
2634 sb->s_root = d_make_root(root); /* allocate root dentry */
2637 goto free_root_inode;
2640 err = f2fs_register_sysfs(sbi);
2642 goto free_root_inode;
2646 * Turn on quotas which were not enabled for read-only mounts if
2647 * filesystem has quota feature, so that they are updated correctly.
2649 if (f2fs_sb_has_quota_ino(sb) && !sb_rdonly(sb)) {
2650 err = f2fs_enable_quotas(sb);
2652 f2fs_msg(sb, KERN_ERR,
2653 "Cannot turn on quotas: error %d", err);
2658 /* if there are nt orphan nodes free them */
2659 err = recover_orphan_inodes(sbi);
2663 /* recover fsynced data */
2664 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
2666 * mount should be failed, when device has readonly mode, and
2667 * previous checkpoint was not done by clean system shutdown.
2669 if (bdev_read_only(sb->s_bdev) &&
2670 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
2676 set_sbi_flag(sbi, SBI_NEED_FSCK);
2681 err = recover_fsync_data(sbi, false);
2684 f2fs_msg(sb, KERN_ERR,
2685 "Cannot recover all fsync data errno=%d", err);
2689 err = recover_fsync_data(sbi, true);
2691 if (!f2fs_readonly(sb) && err > 0) {
2693 f2fs_msg(sb, KERN_ERR,
2694 "Need to recover fsync data");
2699 /* recover_fsync_data() cleared this already */
2700 clear_sbi_flag(sbi, SBI_POR_DOING);
2703 * If filesystem is not mounted as read-only then
2704 * do start the gc_thread.
2706 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
2707 /* After POR, we can run background GC thread.*/
2708 err = start_gc_thread(sbi);
2714 /* recover broken superblock */
2716 err = f2fs_commit_super(sbi, true);
2717 f2fs_msg(sb, KERN_INFO,
2718 "Try to recover %dth superblock, ret: %d",
2719 sbi->valid_super_block ? 1 : 2, err);
2722 f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx",
2723 cur_cp_version(F2FS_CKPT(sbi)));
2724 f2fs_update_time(sbi, CP_TIME);
2725 f2fs_update_time(sbi, REQ_TIME);
2730 if (f2fs_sb_has_quota_ino(sb) && !sb_rdonly(sb))
2731 f2fs_quota_off_umount(sbi->sb);
2733 f2fs_sync_inode_meta(sbi);
2735 * Some dirty meta pages can be produced by recover_orphan_inodes()
2736 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
2737 * followed by write_checkpoint() through f2fs_write_node_pages(), which
2738 * falls into an infinite loop in sync_meta_pages().
2740 truncate_inode_pages_final(META_MAPPING(sbi));
2744 f2fs_unregister_sysfs(sbi);
2749 truncate_inode_pages_final(NODE_MAPPING(sbi));
2750 mutex_lock(&sbi->umount_mutex);
2751 release_ino_entry(sbi, true);
2752 f2fs_leave_shrinker(sbi);
2753 iput(sbi->node_inode);
2754 mutex_unlock(&sbi->umount_mutex);
2755 f2fs_destroy_stats(sbi);
2757 destroy_node_manager(sbi);
2759 destroy_segment_manager(sbi);
2761 destroy_device_list(sbi);
2764 make_bad_inode(sbi->meta_inode);
2765 iput(sbi->meta_inode);
2767 mempool_destroy(sbi->write_io_dummy);
2769 for (i = 0; i < NR_PAGE_TYPE; i++)
2770 kfree(sbi->write_io[i]);
2771 destroy_percpu_info(sbi);
2773 for (i = 0; i < MAXQUOTAS; i++)
2774 kfree(sbi->s_qf_names[i]);
2780 if (sbi->s_chksum_driver)
2781 crypto_free_shash(sbi->s_chksum_driver);
2784 /* give only one another chance */
2787 shrink_dcache_sb(sb);
2793 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
2794 const char *dev_name, void *data)
2796 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
2799 static void kill_f2fs_super(struct super_block *sb)
2802 set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE);
2803 stop_gc_thread(F2FS_SB(sb));
2804 stop_discard_thread(F2FS_SB(sb));
2806 kill_block_super(sb);
2809 static struct file_system_type f2fs_fs_type = {
2810 .owner = THIS_MODULE,
2812 .mount = f2fs_mount,
2813 .kill_sb = kill_f2fs_super,
2814 .fs_flags = FS_REQUIRES_DEV,
2816 MODULE_ALIAS_FS("f2fs");
2818 static int __init init_inodecache(void)
2820 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
2821 sizeof(struct f2fs_inode_info), 0,
2822 SLAB_RECLAIM_ACCOUNT, NULL);
2823 if (!f2fs_inode_cachep)
2828 static void destroy_inodecache(void)
2831 * Make sure all delayed rcu free inodes are flushed before we
2835 kmem_cache_destroy(f2fs_inode_cachep);
2838 static int __init init_f2fs_fs(void)
2842 f2fs_build_trace_ios();
2844 err = init_inodecache();
2847 err = create_node_manager_caches();
2849 goto free_inodecache;
2850 err = create_segment_manager_caches();
2852 goto free_node_manager_caches;
2853 err = create_checkpoint_caches();
2855 goto free_segment_manager_caches;
2856 err = create_extent_cache();
2858 goto free_checkpoint_caches;
2859 err = f2fs_init_sysfs();
2861 goto free_extent_cache;
2862 err = register_shrinker(&f2fs_shrinker_info);
2865 err = register_filesystem(&f2fs_fs_type);
2868 err = f2fs_create_root_stats();
2870 goto free_filesystem;
2874 unregister_filesystem(&f2fs_fs_type);
2876 unregister_shrinker(&f2fs_shrinker_info);
2880 destroy_extent_cache();
2881 free_checkpoint_caches:
2882 destroy_checkpoint_caches();
2883 free_segment_manager_caches:
2884 destroy_segment_manager_caches();
2885 free_node_manager_caches:
2886 destroy_node_manager_caches();
2888 destroy_inodecache();
2893 static void __exit exit_f2fs_fs(void)
2895 f2fs_destroy_root_stats();
2896 unregister_filesystem(&f2fs_fs_type);
2897 unregister_shrinker(&f2fs_shrinker_info);
2899 destroy_extent_cache();
2900 destroy_checkpoint_caches();
2901 destroy_segment_manager_caches();
2902 destroy_node_manager_caches();
2903 destroy_inodecache();
2904 f2fs_destroy_trace_ios();
2907 module_init(init_f2fs_fs)
2908 module_exit(exit_f2fs_fs)
2910 MODULE_AUTHOR("Samsung Electronics's Praesto Team");
2911 MODULE_DESCRIPTION("Flash Friendly File System");
2912 MODULE_LICENSE("GPL");