1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
8 #include <linux/module.h>
9 #include <linux/init.h>
11 #include <linux/statfs.h>
12 #include <linux/buffer_head.h>
13 #include <linux/backing-dev.h>
14 #include <linux/kthread.h>
15 #include <linux/parser.h>
16 #include <linux/mount.h>
17 #include <linux/seq_file.h>
18 #include <linux/proc_fs.h>
19 #include <linux/random.h>
20 #include <linux/exportfs.h>
21 #include <linux/blkdev.h>
22 #include <linux/quotaops.h>
23 #include <linux/f2fs_fs.h>
24 #include <linux/sysfs.h>
25 #include <linux/quota.h>
26 #include <linux/unicode.h>
27 #include <linux/part_stat.h>
36 #define CREATE_TRACE_POINTS
37 #include <trace/events/f2fs.h>
39 static struct kmem_cache
*f2fs_inode_cachep
;
41 #ifdef CONFIG_F2FS_FAULT_INJECTION
43 const char *f2fs_fault_name
[FAULT_MAX
] = {
44 [FAULT_KMALLOC
] = "kmalloc",
45 [FAULT_KVMALLOC
] = "kvmalloc",
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_READ_IO
] = "read IO error",
56 [FAULT_CHECKPOINT
] = "checkpoint error",
57 [FAULT_DISCARD
] = "discard error",
58 [FAULT_WRITE_IO
] = "write IO error",
61 void f2fs_build_fault_attr(struct f2fs_sb_info
*sbi
, unsigned int rate
,
64 struct f2fs_fault_info
*ffi
= &F2FS_OPTION(sbi
).fault_info
;
67 atomic_set(&ffi
->inject_ops
, 0);
68 ffi
->inject_rate
= rate
;
72 ffi
->inject_type
= type
;
75 memset(ffi
, 0, sizeof(struct f2fs_fault_info
));
79 /* f2fs-wide shrinker description */
80 static struct shrinker f2fs_shrinker_info
= {
81 .scan_objects
= f2fs_shrink_scan
,
82 .count_objects
= f2fs_shrink_count
,
83 .seeks
= DEFAULT_SEEKS
,
88 Opt_disable_roll_forward
,
99 Opt_disable_ext_identify
,
102 Opt_inline_xattr_size
,
140 Opt_test_dummy_encryption
,
141 Opt_checkpoint_disable
,
142 Opt_checkpoint_disable_cap
,
143 Opt_checkpoint_disable_cap_perc
,
144 Opt_checkpoint_enable
,
145 Opt_compress_algorithm
,
146 Opt_compress_log_size
,
147 Opt_compress_extension
,
151 static match_table_t f2fs_tokens
= {
152 {Opt_gc_background
, "background_gc=%s"},
153 {Opt_disable_roll_forward
, "disable_roll_forward"},
154 {Opt_norecovery
, "norecovery"},
155 {Opt_discard
, "discard"},
156 {Opt_nodiscard
, "nodiscard"},
157 {Opt_noheap
, "no_heap"},
159 {Opt_user_xattr
, "user_xattr"},
160 {Opt_nouser_xattr
, "nouser_xattr"},
162 {Opt_noacl
, "noacl"},
163 {Opt_active_logs
, "active_logs=%u"},
164 {Opt_disable_ext_identify
, "disable_ext_identify"},
165 {Opt_inline_xattr
, "inline_xattr"},
166 {Opt_noinline_xattr
, "noinline_xattr"},
167 {Opt_inline_xattr_size
, "inline_xattr_size=%u"},
168 {Opt_inline_data
, "inline_data"},
169 {Opt_inline_dentry
, "inline_dentry"},
170 {Opt_noinline_dentry
, "noinline_dentry"},
171 {Opt_flush_merge
, "flush_merge"},
172 {Opt_noflush_merge
, "noflush_merge"},
173 {Opt_nobarrier
, "nobarrier"},
174 {Opt_fastboot
, "fastboot"},
175 {Opt_extent_cache
, "extent_cache"},
176 {Opt_noextent_cache
, "noextent_cache"},
177 {Opt_noinline_data
, "noinline_data"},
178 {Opt_data_flush
, "data_flush"},
179 {Opt_reserve_root
, "reserve_root=%u"},
180 {Opt_resgid
, "resgid=%u"},
181 {Opt_resuid
, "resuid=%u"},
182 {Opt_mode
, "mode=%s"},
183 {Opt_io_size_bits
, "io_bits=%u"},
184 {Opt_fault_injection
, "fault_injection=%u"},
185 {Opt_fault_type
, "fault_type=%u"},
186 {Opt_lazytime
, "lazytime"},
187 {Opt_nolazytime
, "nolazytime"},
188 {Opt_quota
, "quota"},
189 {Opt_noquota
, "noquota"},
190 {Opt_usrquota
, "usrquota"},
191 {Opt_grpquota
, "grpquota"},
192 {Opt_prjquota
, "prjquota"},
193 {Opt_usrjquota
, "usrjquota=%s"},
194 {Opt_grpjquota
, "grpjquota=%s"},
195 {Opt_prjjquota
, "prjjquota=%s"},
196 {Opt_offusrjquota
, "usrjquota="},
197 {Opt_offgrpjquota
, "grpjquota="},
198 {Opt_offprjjquota
, "prjjquota="},
199 {Opt_jqfmt_vfsold
, "jqfmt=vfsold"},
200 {Opt_jqfmt_vfsv0
, "jqfmt=vfsv0"},
201 {Opt_jqfmt_vfsv1
, "jqfmt=vfsv1"},
202 {Opt_whint
, "whint_mode=%s"},
203 {Opt_alloc
, "alloc_mode=%s"},
204 {Opt_fsync
, "fsync_mode=%s"},
205 {Opt_test_dummy_encryption
, "test_dummy_encryption"},
206 {Opt_checkpoint_disable
, "checkpoint=disable"},
207 {Opt_checkpoint_disable_cap
, "checkpoint=disable:%u"},
208 {Opt_checkpoint_disable_cap_perc
, "checkpoint=disable:%u%%"},
209 {Opt_checkpoint_enable
, "checkpoint=enable"},
210 {Opt_compress_algorithm
, "compress_algorithm=%s"},
211 {Opt_compress_log_size
, "compress_log_size=%u"},
212 {Opt_compress_extension
, "compress_extension=%s"},
216 void f2fs_printk(struct f2fs_sb_info
*sbi
, const char *fmt
, ...)
218 struct va_format vaf
;
224 level
= printk_get_level(fmt
);
225 vaf
.fmt
= printk_skip_level(fmt
);
227 printk("%c%cF2FS-fs (%s): %pV\n",
228 KERN_SOH_ASCII
, level
, sbi
->sb
->s_id
, &vaf
);
233 #ifdef CONFIG_UNICODE
234 static const struct f2fs_sb_encodings
{
238 } f2fs_sb_encoding_map
[] = {
239 {F2FS_ENC_UTF8_12_1
, "utf8", "12.1.0"},
242 static int f2fs_sb_read_encoding(const struct f2fs_super_block
*sb
,
243 const struct f2fs_sb_encodings
**encoding
,
246 __u16 magic
= le16_to_cpu(sb
->s_encoding
);
249 for (i
= 0; i
< ARRAY_SIZE(f2fs_sb_encoding_map
); i
++)
250 if (magic
== f2fs_sb_encoding_map
[i
].magic
)
253 if (i
>= ARRAY_SIZE(f2fs_sb_encoding_map
))
256 *encoding
= &f2fs_sb_encoding_map
[i
];
257 *flags
= le16_to_cpu(sb
->s_encoding_flags
);
263 static inline void limit_reserve_root(struct f2fs_sb_info
*sbi
)
265 block_t limit
= min((sbi
->user_block_count
<< 1) / 1000,
266 sbi
->user_block_count
- sbi
->reserved_blocks
);
269 if (test_opt(sbi
, RESERVE_ROOT
) &&
270 F2FS_OPTION(sbi
).root_reserved_blocks
> limit
) {
271 F2FS_OPTION(sbi
).root_reserved_blocks
= limit
;
272 f2fs_info(sbi
, "Reduce reserved blocks for root = %u",
273 F2FS_OPTION(sbi
).root_reserved_blocks
);
275 if (!test_opt(sbi
, RESERVE_ROOT
) &&
276 (!uid_eq(F2FS_OPTION(sbi
).s_resuid
,
277 make_kuid(&init_user_ns
, F2FS_DEF_RESUID
)) ||
278 !gid_eq(F2FS_OPTION(sbi
).s_resgid
,
279 make_kgid(&init_user_ns
, F2FS_DEF_RESGID
))))
280 f2fs_info(sbi
, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
281 from_kuid_munged(&init_user_ns
,
282 F2FS_OPTION(sbi
).s_resuid
),
283 from_kgid_munged(&init_user_ns
,
284 F2FS_OPTION(sbi
).s_resgid
));
287 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info
*sbi
)
289 if (!F2FS_OPTION(sbi
).unusable_cap_perc
)
292 if (F2FS_OPTION(sbi
).unusable_cap_perc
== 100)
293 F2FS_OPTION(sbi
).unusable_cap
= sbi
->user_block_count
;
295 F2FS_OPTION(sbi
).unusable_cap
= (sbi
->user_block_count
/ 100) *
296 F2FS_OPTION(sbi
).unusable_cap_perc
;
298 f2fs_info(sbi
, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
299 F2FS_OPTION(sbi
).unusable_cap
,
300 F2FS_OPTION(sbi
).unusable_cap_perc
);
303 static void init_once(void *foo
)
305 struct f2fs_inode_info
*fi
= (struct f2fs_inode_info
*) foo
;
307 inode_init_once(&fi
->vfs_inode
);
311 static const char * const quotatypes
[] = INITQFNAMES
;
312 #define QTYPE2NAME(t) (quotatypes[t])
313 static int f2fs_set_qf_name(struct super_block
*sb
, int qtype
,
316 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
320 if (sb_any_quota_loaded(sb
) && !F2FS_OPTION(sbi
).s_qf_names
[qtype
]) {
321 f2fs_err(sbi
, "Cannot change journaled quota options when quota turned on");
324 if (f2fs_sb_has_quota_ino(sbi
)) {
325 f2fs_info(sbi
, "QUOTA feature is enabled, so ignore qf_name");
329 qname
= match_strdup(args
);
331 f2fs_err(sbi
, "Not enough memory for storing quotafile name");
334 if (F2FS_OPTION(sbi
).s_qf_names
[qtype
]) {
335 if (strcmp(F2FS_OPTION(sbi
).s_qf_names
[qtype
], qname
) == 0)
338 f2fs_err(sbi
, "%s quota file already specified",
342 if (strchr(qname
, '/')) {
343 f2fs_err(sbi
, "quotafile must be on filesystem root");
346 F2FS_OPTION(sbi
).s_qf_names
[qtype
] = qname
;
354 static int f2fs_clear_qf_name(struct super_block
*sb
, int qtype
)
356 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
358 if (sb_any_quota_loaded(sb
) && F2FS_OPTION(sbi
).s_qf_names
[qtype
]) {
359 f2fs_err(sbi
, "Cannot change journaled quota options when quota turned on");
362 kvfree(F2FS_OPTION(sbi
).s_qf_names
[qtype
]);
363 F2FS_OPTION(sbi
).s_qf_names
[qtype
] = NULL
;
367 static int f2fs_check_quota_options(struct f2fs_sb_info
*sbi
)
370 * We do the test below only for project quotas. 'usrquota' and
371 * 'grpquota' mount options are allowed even without quota feature
372 * to support legacy quotas in quota files.
374 if (test_opt(sbi
, PRJQUOTA
) && !f2fs_sb_has_project_quota(sbi
)) {
375 f2fs_err(sbi
, "Project quota feature not enabled. Cannot enable project quota enforcement.");
378 if (F2FS_OPTION(sbi
).s_qf_names
[USRQUOTA
] ||
379 F2FS_OPTION(sbi
).s_qf_names
[GRPQUOTA
] ||
380 F2FS_OPTION(sbi
).s_qf_names
[PRJQUOTA
]) {
381 if (test_opt(sbi
, USRQUOTA
) &&
382 F2FS_OPTION(sbi
).s_qf_names
[USRQUOTA
])
383 clear_opt(sbi
, USRQUOTA
);
385 if (test_opt(sbi
, GRPQUOTA
) &&
386 F2FS_OPTION(sbi
).s_qf_names
[GRPQUOTA
])
387 clear_opt(sbi
, GRPQUOTA
);
389 if (test_opt(sbi
, PRJQUOTA
) &&
390 F2FS_OPTION(sbi
).s_qf_names
[PRJQUOTA
])
391 clear_opt(sbi
, PRJQUOTA
);
393 if (test_opt(sbi
, GRPQUOTA
) || test_opt(sbi
, USRQUOTA
) ||
394 test_opt(sbi
, PRJQUOTA
)) {
395 f2fs_err(sbi
, "old and new quota format mixing");
399 if (!F2FS_OPTION(sbi
).s_jquota_fmt
) {
400 f2fs_err(sbi
, "journaled quota format not specified");
405 if (f2fs_sb_has_quota_ino(sbi
) && F2FS_OPTION(sbi
).s_jquota_fmt
) {
406 f2fs_info(sbi
, "QUOTA feature is enabled, so ignore jquota_fmt");
407 F2FS_OPTION(sbi
).s_jquota_fmt
= 0;
413 static int parse_options(struct super_block
*sb
, char *options
)
415 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
416 substring_t args
[MAX_OPT_ARGS
];
417 unsigned char (*ext
)[F2FS_EXTENSION_LEN
];
419 int arg
= 0, ext_cnt
;
429 while ((p
= strsep(&options
, ",")) != NULL
) {
434 * Initialize args struct so we know whether arg was
435 * found; some options take optional arguments.
437 args
[0].to
= args
[0].from
= NULL
;
438 token
= match_token(p
, f2fs_tokens
, args
);
441 case Opt_gc_background
:
442 name
= match_strdup(&args
[0]);
446 if (strlen(name
) == 2 && !strncmp(name
, "on", 2)) {
447 F2FS_OPTION(sbi
).bggc_mode
= BGGC_MODE_ON
;
448 } else if (strlen(name
) == 3 && !strncmp(name
, "off", 3)) {
449 F2FS_OPTION(sbi
).bggc_mode
= BGGC_MODE_OFF
;
450 } else if (strlen(name
) == 4 && !strncmp(name
, "sync", 4)) {
451 F2FS_OPTION(sbi
).bggc_mode
= BGGC_MODE_SYNC
;
458 case Opt_disable_roll_forward
:
459 set_opt(sbi
, DISABLE_ROLL_FORWARD
);
462 /* this option mounts f2fs with ro */
463 set_opt(sbi
, NORECOVERY
);
464 if (!f2fs_readonly(sb
))
468 set_opt(sbi
, DISCARD
);
471 if (f2fs_sb_has_blkzoned(sbi
)) {
472 f2fs_warn(sbi
, "discard is required for zoned block devices");
475 clear_opt(sbi
, DISCARD
);
478 set_opt(sbi
, NOHEAP
);
481 clear_opt(sbi
, NOHEAP
);
483 #ifdef CONFIG_F2FS_FS_XATTR
485 set_opt(sbi
, XATTR_USER
);
487 case Opt_nouser_xattr
:
488 clear_opt(sbi
, XATTR_USER
);
490 case Opt_inline_xattr
:
491 set_opt(sbi
, INLINE_XATTR
);
493 case Opt_noinline_xattr
:
494 clear_opt(sbi
, INLINE_XATTR
);
496 case Opt_inline_xattr_size
:
497 if (args
->from
&& match_int(args
, &arg
))
499 set_opt(sbi
, INLINE_XATTR_SIZE
);
500 F2FS_OPTION(sbi
).inline_xattr_size
= arg
;
504 f2fs_info(sbi
, "user_xattr options not supported");
506 case Opt_nouser_xattr
:
507 f2fs_info(sbi
, "nouser_xattr options not supported");
509 case Opt_inline_xattr
:
510 f2fs_info(sbi
, "inline_xattr options not supported");
512 case Opt_noinline_xattr
:
513 f2fs_info(sbi
, "noinline_xattr options not supported");
516 #ifdef CONFIG_F2FS_FS_POSIX_ACL
518 set_opt(sbi
, POSIX_ACL
);
521 clear_opt(sbi
, POSIX_ACL
);
525 f2fs_info(sbi
, "acl options not supported");
528 f2fs_info(sbi
, "noacl options not supported");
531 case Opt_active_logs
:
532 if (args
->from
&& match_int(args
, &arg
))
534 if (arg
!= 2 && arg
!= 4 && arg
!= NR_CURSEG_TYPE
)
536 F2FS_OPTION(sbi
).active_logs
= arg
;
538 case Opt_disable_ext_identify
:
539 set_opt(sbi
, DISABLE_EXT_IDENTIFY
);
541 case Opt_inline_data
:
542 set_opt(sbi
, INLINE_DATA
);
544 case Opt_inline_dentry
:
545 set_opt(sbi
, INLINE_DENTRY
);
547 case Opt_noinline_dentry
:
548 clear_opt(sbi
, INLINE_DENTRY
);
550 case Opt_flush_merge
:
551 set_opt(sbi
, FLUSH_MERGE
);
553 case Opt_noflush_merge
:
554 clear_opt(sbi
, FLUSH_MERGE
);
557 set_opt(sbi
, NOBARRIER
);
560 set_opt(sbi
, FASTBOOT
);
562 case Opt_extent_cache
:
563 set_opt(sbi
, EXTENT_CACHE
);
565 case Opt_noextent_cache
:
566 clear_opt(sbi
, EXTENT_CACHE
);
568 case Opt_noinline_data
:
569 clear_opt(sbi
, INLINE_DATA
);
572 set_opt(sbi
, DATA_FLUSH
);
574 case Opt_reserve_root
:
575 if (args
->from
&& match_int(args
, &arg
))
577 if (test_opt(sbi
, RESERVE_ROOT
)) {
578 f2fs_info(sbi
, "Preserve previous reserve_root=%u",
579 F2FS_OPTION(sbi
).root_reserved_blocks
);
581 F2FS_OPTION(sbi
).root_reserved_blocks
= arg
;
582 set_opt(sbi
, RESERVE_ROOT
);
586 if (args
->from
&& match_int(args
, &arg
))
588 uid
= make_kuid(current_user_ns(), arg
);
589 if (!uid_valid(uid
)) {
590 f2fs_err(sbi
, "Invalid uid value %d", arg
);
593 F2FS_OPTION(sbi
).s_resuid
= uid
;
596 if (args
->from
&& match_int(args
, &arg
))
598 gid
= make_kgid(current_user_ns(), arg
);
599 if (!gid_valid(gid
)) {
600 f2fs_err(sbi
, "Invalid gid value %d", arg
);
603 F2FS_OPTION(sbi
).s_resgid
= gid
;
606 name
= match_strdup(&args
[0]);
610 if (strlen(name
) == 8 &&
611 !strncmp(name
, "adaptive", 8)) {
612 if (f2fs_sb_has_blkzoned(sbi
)) {
613 f2fs_warn(sbi
, "adaptive mode is not allowed with zoned block device feature");
617 F2FS_OPTION(sbi
).fs_mode
= FS_MODE_ADAPTIVE
;
618 } else if (strlen(name
) == 3 &&
619 !strncmp(name
, "lfs", 3)) {
620 F2FS_OPTION(sbi
).fs_mode
= FS_MODE_LFS
;
627 case Opt_io_size_bits
:
628 if (args
->from
&& match_int(args
, &arg
))
630 if (arg
<= 0 || arg
> __ilog2_u32(BIO_MAX_PAGES
)) {
631 f2fs_warn(sbi
, "Not support %d, larger than %d",
632 1 << arg
, BIO_MAX_PAGES
);
635 F2FS_OPTION(sbi
).write_io_size_bits
= arg
;
637 #ifdef CONFIG_F2FS_FAULT_INJECTION
638 case Opt_fault_injection
:
639 if (args
->from
&& match_int(args
, &arg
))
641 f2fs_build_fault_attr(sbi
, arg
, F2FS_ALL_FAULT_TYPE
);
642 set_opt(sbi
, FAULT_INJECTION
);
646 if (args
->from
&& match_int(args
, &arg
))
648 f2fs_build_fault_attr(sbi
, 0, arg
);
649 set_opt(sbi
, FAULT_INJECTION
);
652 case Opt_fault_injection
:
653 f2fs_info(sbi
, "fault_injection options not supported");
657 f2fs_info(sbi
, "fault_type options not supported");
661 sb
->s_flags
|= SB_LAZYTIME
;
664 sb
->s_flags
&= ~SB_LAZYTIME
;
669 set_opt(sbi
, USRQUOTA
);
672 set_opt(sbi
, GRPQUOTA
);
675 set_opt(sbi
, PRJQUOTA
);
678 ret
= f2fs_set_qf_name(sb
, USRQUOTA
, &args
[0]);
683 ret
= f2fs_set_qf_name(sb
, GRPQUOTA
, &args
[0]);
688 ret
= f2fs_set_qf_name(sb
, PRJQUOTA
, &args
[0]);
692 case Opt_offusrjquota
:
693 ret
= f2fs_clear_qf_name(sb
, USRQUOTA
);
697 case Opt_offgrpjquota
:
698 ret
= f2fs_clear_qf_name(sb
, GRPQUOTA
);
702 case Opt_offprjjquota
:
703 ret
= f2fs_clear_qf_name(sb
, PRJQUOTA
);
707 case Opt_jqfmt_vfsold
:
708 F2FS_OPTION(sbi
).s_jquota_fmt
= QFMT_VFS_OLD
;
710 case Opt_jqfmt_vfsv0
:
711 F2FS_OPTION(sbi
).s_jquota_fmt
= QFMT_VFS_V0
;
713 case Opt_jqfmt_vfsv1
:
714 F2FS_OPTION(sbi
).s_jquota_fmt
= QFMT_VFS_V1
;
717 clear_opt(sbi
, QUOTA
);
718 clear_opt(sbi
, USRQUOTA
);
719 clear_opt(sbi
, GRPQUOTA
);
720 clear_opt(sbi
, PRJQUOTA
);
730 case Opt_offusrjquota
:
731 case Opt_offgrpjquota
:
732 case Opt_offprjjquota
:
733 case Opt_jqfmt_vfsold
:
734 case Opt_jqfmt_vfsv0
:
735 case Opt_jqfmt_vfsv1
:
737 f2fs_info(sbi
, "quota operations not supported");
741 name
= match_strdup(&args
[0]);
744 if (strlen(name
) == 10 &&
745 !strncmp(name
, "user-based", 10)) {
746 F2FS_OPTION(sbi
).whint_mode
= WHINT_MODE_USER
;
747 } else if (strlen(name
) == 3 &&
748 !strncmp(name
, "off", 3)) {
749 F2FS_OPTION(sbi
).whint_mode
= WHINT_MODE_OFF
;
750 } else if (strlen(name
) == 8 &&
751 !strncmp(name
, "fs-based", 8)) {
752 F2FS_OPTION(sbi
).whint_mode
= WHINT_MODE_FS
;
760 name
= match_strdup(&args
[0]);
764 if (strlen(name
) == 7 &&
765 !strncmp(name
, "default", 7)) {
766 F2FS_OPTION(sbi
).alloc_mode
= ALLOC_MODE_DEFAULT
;
767 } else if (strlen(name
) == 5 &&
768 !strncmp(name
, "reuse", 5)) {
769 F2FS_OPTION(sbi
).alloc_mode
= ALLOC_MODE_REUSE
;
777 name
= match_strdup(&args
[0]);
780 if (strlen(name
) == 5 &&
781 !strncmp(name
, "posix", 5)) {
782 F2FS_OPTION(sbi
).fsync_mode
= FSYNC_MODE_POSIX
;
783 } else if (strlen(name
) == 6 &&
784 !strncmp(name
, "strict", 6)) {
785 F2FS_OPTION(sbi
).fsync_mode
= FSYNC_MODE_STRICT
;
786 } else if (strlen(name
) == 9 &&
787 !strncmp(name
, "nobarrier", 9)) {
788 F2FS_OPTION(sbi
).fsync_mode
=
789 FSYNC_MODE_NOBARRIER
;
796 case Opt_test_dummy_encryption
:
797 #ifdef CONFIG_FS_ENCRYPTION
798 if (!f2fs_sb_has_encrypt(sbi
)) {
799 f2fs_err(sbi
, "Encrypt feature is off");
803 F2FS_OPTION(sbi
).test_dummy_encryption
= true;
804 f2fs_info(sbi
, "Test dummy encryption mode enabled");
806 f2fs_info(sbi
, "Test dummy encryption mount option ignored");
809 case Opt_checkpoint_disable_cap_perc
:
810 if (args
->from
&& match_int(args
, &arg
))
812 if (arg
< 0 || arg
> 100)
814 F2FS_OPTION(sbi
).unusable_cap_perc
= arg
;
815 set_opt(sbi
, DISABLE_CHECKPOINT
);
817 case Opt_checkpoint_disable_cap
:
818 if (args
->from
&& match_int(args
, &arg
))
820 F2FS_OPTION(sbi
).unusable_cap
= arg
;
821 set_opt(sbi
, DISABLE_CHECKPOINT
);
823 case Opt_checkpoint_disable
:
824 set_opt(sbi
, DISABLE_CHECKPOINT
);
826 case Opt_checkpoint_enable
:
827 clear_opt(sbi
, DISABLE_CHECKPOINT
);
829 case Opt_compress_algorithm
:
830 if (!f2fs_sb_has_compression(sbi
)) {
831 f2fs_err(sbi
, "Compression feature if off");
834 name
= match_strdup(&args
[0]);
837 if (strlen(name
) == 3 && !strcmp(name
, "lzo")) {
838 F2FS_OPTION(sbi
).compress_algorithm
=
840 } else if (strlen(name
) == 3 &&
841 !strcmp(name
, "lz4")) {
842 F2FS_OPTION(sbi
).compress_algorithm
=
844 } else if (strlen(name
) == 4 &&
845 !strcmp(name
, "zstd")) {
846 F2FS_OPTION(sbi
).compress_algorithm
=
854 case Opt_compress_log_size
:
855 if (!f2fs_sb_has_compression(sbi
)) {
856 f2fs_err(sbi
, "Compression feature is off");
859 if (args
->from
&& match_int(args
, &arg
))
861 if (arg
< MIN_COMPRESS_LOG_SIZE
||
862 arg
> MAX_COMPRESS_LOG_SIZE
) {
864 "Compress cluster log size is out of range");
867 F2FS_OPTION(sbi
).compress_log_size
= arg
;
869 case Opt_compress_extension
:
870 if (!f2fs_sb_has_compression(sbi
)) {
871 f2fs_err(sbi
, "Compression feature is off");
874 name
= match_strdup(&args
[0]);
878 ext
= F2FS_OPTION(sbi
).extensions
;
879 ext_cnt
= F2FS_OPTION(sbi
).compress_ext_cnt
;
881 if (strlen(name
) >= F2FS_EXTENSION_LEN
||
882 ext_cnt
>= COMPRESS_EXT_NUM
) {
884 "invalid extension length/number");
889 strcpy(ext
[ext_cnt
], name
);
890 F2FS_OPTION(sbi
).compress_ext_cnt
++;
894 f2fs_err(sbi
, "Unrecognized mount option \"%s\" or missing value",
900 if (f2fs_check_quota_options(sbi
))
903 if (f2fs_sb_has_quota_ino(sbi
) && !f2fs_readonly(sbi
->sb
)) {
904 f2fs_info(sbi
, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
907 if (f2fs_sb_has_project_quota(sbi
) && !f2fs_readonly(sbi
->sb
)) {
908 f2fs_err(sbi
, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
912 #ifndef CONFIG_UNICODE
913 if (f2fs_sb_has_casefold(sbi
)) {
915 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
920 if (F2FS_IO_SIZE_BITS(sbi
) && !f2fs_lfs_mode(sbi
)) {
921 f2fs_err(sbi
, "Should set mode=lfs with %uKB-sized IO",
922 F2FS_IO_SIZE_KB(sbi
));
926 if (test_opt(sbi
, INLINE_XATTR_SIZE
)) {
927 int min_size
, max_size
;
929 if (!f2fs_sb_has_extra_attr(sbi
) ||
930 !f2fs_sb_has_flexible_inline_xattr(sbi
)) {
931 f2fs_err(sbi
, "extra_attr or flexible_inline_xattr feature is off");
934 if (!test_opt(sbi
, INLINE_XATTR
)) {
935 f2fs_err(sbi
, "inline_xattr_size option should be set with inline_xattr option");
939 min_size
= sizeof(struct f2fs_xattr_header
) / sizeof(__le32
);
940 max_size
= MAX_INLINE_XATTR_SIZE
;
942 if (F2FS_OPTION(sbi
).inline_xattr_size
< min_size
||
943 F2FS_OPTION(sbi
).inline_xattr_size
> max_size
) {
944 f2fs_err(sbi
, "inline xattr size is out of range: %d ~ %d",
950 if (test_opt(sbi
, DISABLE_CHECKPOINT
) && f2fs_lfs_mode(sbi
)) {
951 f2fs_err(sbi
, "LFS not compatible with checkpoint=disable\n");
955 /* Not pass down write hints if the number of active logs is lesser
956 * than NR_CURSEG_TYPE.
958 if (F2FS_OPTION(sbi
).active_logs
!= NR_CURSEG_TYPE
)
959 F2FS_OPTION(sbi
).whint_mode
= WHINT_MODE_OFF
;
963 static struct inode
*f2fs_alloc_inode(struct super_block
*sb
)
965 struct f2fs_inode_info
*fi
;
967 fi
= kmem_cache_alloc(f2fs_inode_cachep
, GFP_F2FS_ZERO
);
971 init_once((void *) fi
);
973 /* Initialize f2fs-specific inode info */
974 atomic_set(&fi
->dirty_pages
, 0);
975 init_rwsem(&fi
->i_sem
);
976 spin_lock_init(&fi
->i_size_lock
);
977 INIT_LIST_HEAD(&fi
->dirty_list
);
978 INIT_LIST_HEAD(&fi
->gdirty_list
);
979 INIT_LIST_HEAD(&fi
->inmem_ilist
);
980 INIT_LIST_HEAD(&fi
->inmem_pages
);
981 mutex_init(&fi
->inmem_lock
);
982 init_rwsem(&fi
->i_gc_rwsem
[READ
]);
983 init_rwsem(&fi
->i_gc_rwsem
[WRITE
]);
984 init_rwsem(&fi
->i_mmap_sem
);
985 init_rwsem(&fi
->i_xattr_sem
);
987 /* Will be used by directory only */
988 fi
->i_dir_level
= F2FS_SB(sb
)->dir_level
;
990 return &fi
->vfs_inode
;
993 static int f2fs_drop_inode(struct inode
*inode
)
995 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
999 * during filesystem shutdown, if checkpoint is disabled,
1000 * drop useless meta/node dirty pages.
1002 if (unlikely(is_sbi_flag_set(sbi
, SBI_CP_DISABLED
))) {
1003 if (inode
->i_ino
== F2FS_NODE_INO(sbi
) ||
1004 inode
->i_ino
== F2FS_META_INO(sbi
)) {
1005 trace_f2fs_drop_inode(inode
, 1);
1011 * This is to avoid a deadlock condition like below.
1012 * writeback_single_inode(inode)
1013 * - f2fs_write_data_page
1014 * - f2fs_gc -> iput -> evict
1015 * - inode_wait_for_writeback(inode)
1017 if ((!inode_unhashed(inode
) && inode
->i_state
& I_SYNC
)) {
1018 if (!inode
->i_nlink
&& !is_bad_inode(inode
)) {
1019 /* to avoid evict_inode call simultaneously */
1020 atomic_inc(&inode
->i_count
);
1021 spin_unlock(&inode
->i_lock
);
1023 /* some remained atomic pages should discarded */
1024 if (f2fs_is_atomic_file(inode
))
1025 f2fs_drop_inmem_pages(inode
);
1027 /* should remain fi->extent_tree for writepage */
1028 f2fs_destroy_extent_node(inode
);
1030 sb_start_intwrite(inode
->i_sb
);
1031 f2fs_i_size_write(inode
, 0);
1033 f2fs_submit_merged_write_cond(F2FS_I_SB(inode
),
1034 inode
, NULL
, 0, DATA
);
1035 truncate_inode_pages_final(inode
->i_mapping
);
1037 if (F2FS_HAS_BLOCKS(inode
))
1038 f2fs_truncate(inode
);
1040 sb_end_intwrite(inode
->i_sb
);
1042 spin_lock(&inode
->i_lock
);
1043 atomic_dec(&inode
->i_count
);
1045 trace_f2fs_drop_inode(inode
, 0);
1048 ret
= generic_drop_inode(inode
);
1050 ret
= fscrypt_drop_inode(inode
);
1051 trace_f2fs_drop_inode(inode
, ret
);
1055 int f2fs_inode_dirtied(struct inode
*inode
, bool sync
)
1057 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1060 spin_lock(&sbi
->inode_lock
[DIRTY_META
]);
1061 if (is_inode_flag_set(inode
, FI_DIRTY_INODE
)) {
1064 set_inode_flag(inode
, FI_DIRTY_INODE
);
1065 stat_inc_dirty_inode(sbi
, DIRTY_META
);
1067 if (sync
&& list_empty(&F2FS_I(inode
)->gdirty_list
)) {
1068 list_add_tail(&F2FS_I(inode
)->gdirty_list
,
1069 &sbi
->inode_list
[DIRTY_META
]);
1070 inc_page_count(sbi
, F2FS_DIRTY_IMETA
);
1072 spin_unlock(&sbi
->inode_lock
[DIRTY_META
]);
1076 void f2fs_inode_synced(struct inode
*inode
)
1078 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1080 spin_lock(&sbi
->inode_lock
[DIRTY_META
]);
1081 if (!is_inode_flag_set(inode
, FI_DIRTY_INODE
)) {
1082 spin_unlock(&sbi
->inode_lock
[DIRTY_META
]);
1085 if (!list_empty(&F2FS_I(inode
)->gdirty_list
)) {
1086 list_del_init(&F2FS_I(inode
)->gdirty_list
);
1087 dec_page_count(sbi
, F2FS_DIRTY_IMETA
);
1089 clear_inode_flag(inode
, FI_DIRTY_INODE
);
1090 clear_inode_flag(inode
, FI_AUTO_RECOVER
);
1091 stat_dec_dirty_inode(F2FS_I_SB(inode
), DIRTY_META
);
1092 spin_unlock(&sbi
->inode_lock
[DIRTY_META
]);
1096 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1098 * We should call set_dirty_inode to write the dirty inode through write_inode.
1100 static void f2fs_dirty_inode(struct inode
*inode
, int flags
)
1102 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1104 if (inode
->i_ino
== F2FS_NODE_INO(sbi
) ||
1105 inode
->i_ino
== F2FS_META_INO(sbi
))
1108 if (flags
== I_DIRTY_TIME
)
1111 if (is_inode_flag_set(inode
, FI_AUTO_RECOVER
))
1112 clear_inode_flag(inode
, FI_AUTO_RECOVER
);
1114 f2fs_inode_dirtied(inode
, false);
1117 static void f2fs_free_inode(struct inode
*inode
)
1119 fscrypt_free_inode(inode
);
1120 kmem_cache_free(f2fs_inode_cachep
, F2FS_I(inode
));
1123 static void destroy_percpu_info(struct f2fs_sb_info
*sbi
)
1125 percpu_counter_destroy(&sbi
->alloc_valid_block_count
);
1126 percpu_counter_destroy(&sbi
->total_valid_inode_count
);
1129 static void destroy_device_list(struct f2fs_sb_info
*sbi
)
1133 for (i
= 0; i
< sbi
->s_ndevs
; i
++) {
1134 blkdev_put(FDEV(i
).bdev
, FMODE_EXCL
);
1135 #ifdef CONFIG_BLK_DEV_ZONED
1136 kvfree(FDEV(i
).blkz_seq
);
1142 static void f2fs_put_super(struct super_block
*sb
)
1144 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
1148 f2fs_quota_off_umount(sb
);
1150 /* prevent remaining shrinker jobs */
1151 mutex_lock(&sbi
->umount_mutex
);
1154 * We don't need to do checkpoint when superblock is clean.
1155 * But, the previous checkpoint was not done by umount, it needs to do
1156 * clean checkpoint again.
1158 if ((is_sbi_flag_set(sbi
, SBI_IS_DIRTY
) ||
1159 !is_set_ckpt_flags(sbi
, CP_UMOUNT_FLAG
))) {
1160 struct cp_control cpc
= {
1161 .reason
= CP_UMOUNT
,
1163 f2fs_write_checkpoint(sbi
, &cpc
);
1166 /* be sure to wait for any on-going discard commands */
1167 dropped
= f2fs_issue_discard_timeout(sbi
);
1169 if ((f2fs_hw_support_discard(sbi
) || f2fs_hw_should_discard(sbi
)) &&
1170 !sbi
->discard_blks
&& !dropped
) {
1171 struct cp_control cpc
= {
1172 .reason
= CP_UMOUNT
| CP_TRIMMED
,
1174 f2fs_write_checkpoint(sbi
, &cpc
);
1178 * normally superblock is clean, so we need to release this.
1179 * In addition, EIO will skip do checkpoint, we need this as well.
1181 f2fs_release_ino_entry(sbi
, true);
1183 f2fs_leave_shrinker(sbi
);
1184 mutex_unlock(&sbi
->umount_mutex
);
1186 /* our cp_error case, we can wait for any writeback page */
1187 f2fs_flush_merged_writes(sbi
);
1189 f2fs_wait_on_all_pages(sbi
, F2FS_WB_CP_DATA
);
1191 f2fs_bug_on(sbi
, sbi
->fsync_node_num
);
1193 iput(sbi
->node_inode
);
1194 sbi
->node_inode
= NULL
;
1196 iput(sbi
->meta_inode
);
1197 sbi
->meta_inode
= NULL
;
1200 * iput() can update stat information, if f2fs_write_checkpoint()
1201 * above failed with error.
1203 f2fs_destroy_stats(sbi
);
1205 /* destroy f2fs internal modules */
1206 f2fs_destroy_node_manager(sbi
);
1207 f2fs_destroy_segment_manager(sbi
);
1209 f2fs_destroy_post_read_wq(sbi
);
1213 f2fs_unregister_sysfs(sbi
);
1215 sb
->s_fs_info
= NULL
;
1216 if (sbi
->s_chksum_driver
)
1217 crypto_free_shash(sbi
->s_chksum_driver
);
1218 kvfree(sbi
->raw_super
);
1220 destroy_device_list(sbi
);
1221 f2fs_destroy_xattr_caches(sbi
);
1222 mempool_destroy(sbi
->write_io_dummy
);
1224 for (i
= 0; i
< MAXQUOTAS
; i
++)
1225 kvfree(F2FS_OPTION(sbi
).s_qf_names
[i
]);
1227 destroy_percpu_info(sbi
);
1228 for (i
= 0; i
< NR_PAGE_TYPE
; i
++)
1229 kvfree(sbi
->write_io
[i
]);
1230 #ifdef CONFIG_UNICODE
1231 utf8_unload(sbi
->s_encoding
);
1236 int f2fs_sync_fs(struct super_block
*sb
, int sync
)
1238 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
1241 if (unlikely(f2fs_cp_error(sbi
)))
1243 if (unlikely(is_sbi_flag_set(sbi
, SBI_CP_DISABLED
)))
1246 trace_f2fs_sync_fs(sb
, sync
);
1248 if (unlikely(is_sbi_flag_set(sbi
, SBI_POR_DOING
)))
1252 struct cp_control cpc
;
1254 cpc
.reason
= __get_cp_reason(sbi
);
1256 down_write(&sbi
->gc_lock
);
1257 err
= f2fs_write_checkpoint(sbi
, &cpc
);
1258 up_write(&sbi
->gc_lock
);
1260 f2fs_trace_ios(NULL
, 1);
1265 static int f2fs_freeze(struct super_block
*sb
)
1267 if (f2fs_readonly(sb
))
1270 /* IO error happened before */
1271 if (unlikely(f2fs_cp_error(F2FS_SB(sb
))))
1274 /* must be clean, since sync_filesystem() was already called */
1275 if (is_sbi_flag_set(F2FS_SB(sb
), SBI_IS_DIRTY
))
1280 static int f2fs_unfreeze(struct super_block
*sb
)
1286 static int f2fs_statfs_project(struct super_block
*sb
,
1287 kprojid_t projid
, struct kstatfs
*buf
)
1290 struct dquot
*dquot
;
1294 qid
= make_kqid_projid(projid
);
1295 dquot
= dqget(sb
, qid
);
1297 return PTR_ERR(dquot
);
1298 spin_lock(&dquot
->dq_dqb_lock
);
1300 limit
= min_not_zero(dquot
->dq_dqb
.dqb_bsoftlimit
,
1301 dquot
->dq_dqb
.dqb_bhardlimit
);
1303 limit
>>= sb
->s_blocksize_bits
;
1305 if (limit
&& buf
->f_blocks
> limit
) {
1306 curblock
= (dquot
->dq_dqb
.dqb_curspace
+
1307 dquot
->dq_dqb
.dqb_rsvspace
) >> sb
->s_blocksize_bits
;
1308 buf
->f_blocks
= limit
;
1309 buf
->f_bfree
= buf
->f_bavail
=
1310 (buf
->f_blocks
> curblock
) ?
1311 (buf
->f_blocks
- curblock
) : 0;
1314 limit
= min_not_zero(dquot
->dq_dqb
.dqb_isoftlimit
,
1315 dquot
->dq_dqb
.dqb_ihardlimit
);
1317 if (limit
&& buf
->f_files
> limit
) {
1318 buf
->f_files
= limit
;
1320 (buf
->f_files
> dquot
->dq_dqb
.dqb_curinodes
) ?
1321 (buf
->f_files
- dquot
->dq_dqb
.dqb_curinodes
) : 0;
1324 spin_unlock(&dquot
->dq_dqb_lock
);
1330 static int f2fs_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
1332 struct super_block
*sb
= dentry
->d_sb
;
1333 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
1334 u64 id
= huge_encode_dev(sb
->s_bdev
->bd_dev
);
1335 block_t total_count
, user_block_count
, start_count
;
1336 u64 avail_node_count
;
1338 total_count
= le64_to_cpu(sbi
->raw_super
->block_count
);
1339 user_block_count
= sbi
->user_block_count
;
1340 start_count
= le32_to_cpu(sbi
->raw_super
->segment0_blkaddr
);
1341 buf
->f_type
= F2FS_SUPER_MAGIC
;
1342 buf
->f_bsize
= sbi
->blocksize
;
1344 buf
->f_blocks
= total_count
- start_count
;
1345 buf
->f_bfree
= user_block_count
- valid_user_blocks(sbi
) -
1346 sbi
->current_reserved_blocks
;
1348 spin_lock(&sbi
->stat_lock
);
1349 if (unlikely(buf
->f_bfree
<= sbi
->unusable_block_count
))
1352 buf
->f_bfree
-= sbi
->unusable_block_count
;
1353 spin_unlock(&sbi
->stat_lock
);
1355 if (buf
->f_bfree
> F2FS_OPTION(sbi
).root_reserved_blocks
)
1356 buf
->f_bavail
= buf
->f_bfree
-
1357 F2FS_OPTION(sbi
).root_reserved_blocks
;
1361 avail_node_count
= sbi
->total_node_count
- F2FS_RESERVED_NODE_NUM
;
1363 if (avail_node_count
> user_block_count
) {
1364 buf
->f_files
= user_block_count
;
1365 buf
->f_ffree
= buf
->f_bavail
;
1367 buf
->f_files
= avail_node_count
;
1368 buf
->f_ffree
= min(avail_node_count
- valid_node_count(sbi
),
1372 buf
->f_namelen
= F2FS_NAME_LEN
;
1373 buf
->f_fsid
.val
[0] = (u32
)id
;
1374 buf
->f_fsid
.val
[1] = (u32
)(id
>> 32);
1377 if (is_inode_flag_set(dentry
->d_inode
, FI_PROJ_INHERIT
) &&
1378 sb_has_quota_limits_enabled(sb
, PRJQUOTA
)) {
1379 f2fs_statfs_project(sb
, F2FS_I(dentry
->d_inode
)->i_projid
, buf
);
1385 static inline void f2fs_show_quota_options(struct seq_file
*seq
,
1386 struct super_block
*sb
)
1389 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
1391 if (F2FS_OPTION(sbi
).s_jquota_fmt
) {
1394 switch (F2FS_OPTION(sbi
).s_jquota_fmt
) {
1405 seq_printf(seq
, ",jqfmt=%s", fmtname
);
1408 if (F2FS_OPTION(sbi
).s_qf_names
[USRQUOTA
])
1409 seq_show_option(seq
, "usrjquota",
1410 F2FS_OPTION(sbi
).s_qf_names
[USRQUOTA
]);
1412 if (F2FS_OPTION(sbi
).s_qf_names
[GRPQUOTA
])
1413 seq_show_option(seq
, "grpjquota",
1414 F2FS_OPTION(sbi
).s_qf_names
[GRPQUOTA
]);
1416 if (F2FS_OPTION(sbi
).s_qf_names
[PRJQUOTA
])
1417 seq_show_option(seq
, "prjjquota",
1418 F2FS_OPTION(sbi
).s_qf_names
[PRJQUOTA
]);
1422 static inline void f2fs_show_compress_options(struct seq_file
*seq
,
1423 struct super_block
*sb
)
1425 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
1429 if (!f2fs_sb_has_compression(sbi
))
1432 switch (F2FS_OPTION(sbi
).compress_algorithm
) {
1443 seq_printf(seq
, ",compress_algorithm=%s", algtype
);
1445 seq_printf(seq
, ",compress_log_size=%u",
1446 F2FS_OPTION(sbi
).compress_log_size
);
1448 for (i
= 0; i
< F2FS_OPTION(sbi
).compress_ext_cnt
; i
++) {
1449 seq_printf(seq
, ",compress_extension=%s",
1450 F2FS_OPTION(sbi
).extensions
[i
]);
1454 static int f2fs_show_options(struct seq_file
*seq
, struct dentry
*root
)
1456 struct f2fs_sb_info
*sbi
= F2FS_SB(root
->d_sb
);
1458 if (F2FS_OPTION(sbi
).bggc_mode
== BGGC_MODE_SYNC
)
1459 seq_printf(seq
, ",background_gc=%s", "sync");
1460 else if (F2FS_OPTION(sbi
).bggc_mode
== BGGC_MODE_ON
)
1461 seq_printf(seq
, ",background_gc=%s", "on");
1462 else if (F2FS_OPTION(sbi
).bggc_mode
== BGGC_MODE_OFF
)
1463 seq_printf(seq
, ",background_gc=%s", "off");
1465 if (test_opt(sbi
, DISABLE_ROLL_FORWARD
))
1466 seq_puts(seq
, ",disable_roll_forward");
1467 if (test_opt(sbi
, NORECOVERY
))
1468 seq_puts(seq
, ",norecovery");
1469 if (test_opt(sbi
, DISCARD
))
1470 seq_puts(seq
, ",discard");
1472 seq_puts(seq
, ",nodiscard");
1473 if (test_opt(sbi
, NOHEAP
))
1474 seq_puts(seq
, ",no_heap");
1476 seq_puts(seq
, ",heap");
1477 #ifdef CONFIG_F2FS_FS_XATTR
1478 if (test_opt(sbi
, XATTR_USER
))
1479 seq_puts(seq
, ",user_xattr");
1481 seq_puts(seq
, ",nouser_xattr");
1482 if (test_opt(sbi
, INLINE_XATTR
))
1483 seq_puts(seq
, ",inline_xattr");
1485 seq_puts(seq
, ",noinline_xattr");
1486 if (test_opt(sbi
, INLINE_XATTR_SIZE
))
1487 seq_printf(seq
, ",inline_xattr_size=%u",
1488 F2FS_OPTION(sbi
).inline_xattr_size
);
1490 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1491 if (test_opt(sbi
, POSIX_ACL
))
1492 seq_puts(seq
, ",acl");
1494 seq_puts(seq
, ",noacl");
1496 if (test_opt(sbi
, DISABLE_EXT_IDENTIFY
))
1497 seq_puts(seq
, ",disable_ext_identify");
1498 if (test_opt(sbi
, INLINE_DATA
))
1499 seq_puts(seq
, ",inline_data");
1501 seq_puts(seq
, ",noinline_data");
1502 if (test_opt(sbi
, INLINE_DENTRY
))
1503 seq_puts(seq
, ",inline_dentry");
1505 seq_puts(seq
, ",noinline_dentry");
1506 if (!f2fs_readonly(sbi
->sb
) && test_opt(sbi
, FLUSH_MERGE
))
1507 seq_puts(seq
, ",flush_merge");
1508 if (test_opt(sbi
, NOBARRIER
))
1509 seq_puts(seq
, ",nobarrier");
1510 if (test_opt(sbi
, FASTBOOT
))
1511 seq_puts(seq
, ",fastboot");
1512 if (test_opt(sbi
, EXTENT_CACHE
))
1513 seq_puts(seq
, ",extent_cache");
1515 seq_puts(seq
, ",noextent_cache");
1516 if (test_opt(sbi
, DATA_FLUSH
))
1517 seq_puts(seq
, ",data_flush");
1519 seq_puts(seq
, ",mode=");
1520 if (F2FS_OPTION(sbi
).fs_mode
== FS_MODE_ADAPTIVE
)
1521 seq_puts(seq
, "adaptive");
1522 else if (F2FS_OPTION(sbi
).fs_mode
== FS_MODE_LFS
)
1523 seq_puts(seq
, "lfs");
1524 seq_printf(seq
, ",active_logs=%u", F2FS_OPTION(sbi
).active_logs
);
1525 if (test_opt(sbi
, RESERVE_ROOT
))
1526 seq_printf(seq
, ",reserve_root=%u,resuid=%u,resgid=%u",
1527 F2FS_OPTION(sbi
).root_reserved_blocks
,
1528 from_kuid_munged(&init_user_ns
,
1529 F2FS_OPTION(sbi
).s_resuid
),
1530 from_kgid_munged(&init_user_ns
,
1531 F2FS_OPTION(sbi
).s_resgid
));
1532 if (F2FS_IO_SIZE_BITS(sbi
))
1533 seq_printf(seq
, ",io_bits=%u",
1534 F2FS_OPTION(sbi
).write_io_size_bits
);
1535 #ifdef CONFIG_F2FS_FAULT_INJECTION
1536 if (test_opt(sbi
, FAULT_INJECTION
)) {
1537 seq_printf(seq
, ",fault_injection=%u",
1538 F2FS_OPTION(sbi
).fault_info
.inject_rate
);
1539 seq_printf(seq
, ",fault_type=%u",
1540 F2FS_OPTION(sbi
).fault_info
.inject_type
);
1544 if (test_opt(sbi
, QUOTA
))
1545 seq_puts(seq
, ",quota");
1546 if (test_opt(sbi
, USRQUOTA
))
1547 seq_puts(seq
, ",usrquota");
1548 if (test_opt(sbi
, GRPQUOTA
))
1549 seq_puts(seq
, ",grpquota");
1550 if (test_opt(sbi
, PRJQUOTA
))
1551 seq_puts(seq
, ",prjquota");
1553 f2fs_show_quota_options(seq
, sbi
->sb
);
1554 if (F2FS_OPTION(sbi
).whint_mode
== WHINT_MODE_USER
)
1555 seq_printf(seq
, ",whint_mode=%s", "user-based");
1556 else if (F2FS_OPTION(sbi
).whint_mode
== WHINT_MODE_FS
)
1557 seq_printf(seq
, ",whint_mode=%s", "fs-based");
1558 #ifdef CONFIG_FS_ENCRYPTION
1559 if (F2FS_OPTION(sbi
).test_dummy_encryption
)
1560 seq_puts(seq
, ",test_dummy_encryption");
1563 if (F2FS_OPTION(sbi
).alloc_mode
== ALLOC_MODE_DEFAULT
)
1564 seq_printf(seq
, ",alloc_mode=%s", "default");
1565 else if (F2FS_OPTION(sbi
).alloc_mode
== ALLOC_MODE_REUSE
)
1566 seq_printf(seq
, ",alloc_mode=%s", "reuse");
1568 if (test_opt(sbi
, DISABLE_CHECKPOINT
))
1569 seq_printf(seq
, ",checkpoint=disable:%u",
1570 F2FS_OPTION(sbi
).unusable_cap
);
1571 if (F2FS_OPTION(sbi
).fsync_mode
== FSYNC_MODE_POSIX
)
1572 seq_printf(seq
, ",fsync_mode=%s", "posix");
1573 else if (F2FS_OPTION(sbi
).fsync_mode
== FSYNC_MODE_STRICT
)
1574 seq_printf(seq
, ",fsync_mode=%s", "strict");
1575 else if (F2FS_OPTION(sbi
).fsync_mode
== FSYNC_MODE_NOBARRIER
)
1576 seq_printf(seq
, ",fsync_mode=%s", "nobarrier");
1578 f2fs_show_compress_options(seq
, sbi
->sb
);
1582 static void default_options(struct f2fs_sb_info
*sbi
)
1584 /* init some FS parameters */
1585 F2FS_OPTION(sbi
).active_logs
= NR_CURSEG_TYPE
;
1586 F2FS_OPTION(sbi
).inline_xattr_size
= DEFAULT_INLINE_XATTR_ADDRS
;
1587 F2FS_OPTION(sbi
).whint_mode
= WHINT_MODE_OFF
;
1588 F2FS_OPTION(sbi
).alloc_mode
= ALLOC_MODE_DEFAULT
;
1589 F2FS_OPTION(sbi
).fsync_mode
= FSYNC_MODE_POSIX
;
1590 F2FS_OPTION(sbi
).test_dummy_encryption
= false;
1591 F2FS_OPTION(sbi
).s_resuid
= make_kuid(&init_user_ns
, F2FS_DEF_RESUID
);
1592 F2FS_OPTION(sbi
).s_resgid
= make_kgid(&init_user_ns
, F2FS_DEF_RESGID
);
1593 F2FS_OPTION(sbi
).compress_algorithm
= COMPRESS_LZ4
;
1594 F2FS_OPTION(sbi
).compress_log_size
= MIN_COMPRESS_LOG_SIZE
;
1595 F2FS_OPTION(sbi
).compress_ext_cnt
= 0;
1596 F2FS_OPTION(sbi
).bggc_mode
= BGGC_MODE_ON
;
1598 set_opt(sbi
, INLINE_XATTR
);
1599 set_opt(sbi
, INLINE_DATA
);
1600 set_opt(sbi
, INLINE_DENTRY
);
1601 set_opt(sbi
, EXTENT_CACHE
);
1602 set_opt(sbi
, NOHEAP
);
1603 clear_opt(sbi
, DISABLE_CHECKPOINT
);
1604 F2FS_OPTION(sbi
).unusable_cap
= 0;
1605 sbi
->sb
->s_flags
|= SB_LAZYTIME
;
1606 set_opt(sbi
, FLUSH_MERGE
);
1607 set_opt(sbi
, DISCARD
);
1608 if (f2fs_sb_has_blkzoned(sbi
))
1609 F2FS_OPTION(sbi
).fs_mode
= FS_MODE_LFS
;
1611 F2FS_OPTION(sbi
).fs_mode
= FS_MODE_ADAPTIVE
;
1613 #ifdef CONFIG_F2FS_FS_XATTR
1614 set_opt(sbi
, XATTR_USER
);
1616 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1617 set_opt(sbi
, POSIX_ACL
);
1620 f2fs_build_fault_attr(sbi
, 0, 0);
1624 static int f2fs_enable_quotas(struct super_block
*sb
);
1627 static int f2fs_disable_checkpoint(struct f2fs_sb_info
*sbi
)
1629 unsigned int s_flags
= sbi
->sb
->s_flags
;
1630 struct cp_control cpc
;
1635 if (s_flags
& SB_RDONLY
) {
1636 f2fs_err(sbi
, "checkpoint=disable on readonly fs");
1639 sbi
->sb
->s_flags
|= SB_ACTIVE
;
1641 f2fs_update_time(sbi
, DISABLE_TIME
);
1643 while (!f2fs_time_over(sbi
, DISABLE_TIME
)) {
1644 down_write(&sbi
->gc_lock
);
1645 err
= f2fs_gc(sbi
, true, false, NULL_SEGNO
);
1646 if (err
== -ENODATA
) {
1650 if (err
&& err
!= -EAGAIN
)
1654 ret
= sync_filesystem(sbi
->sb
);
1656 err
= ret
? ret
: err
;
1660 unusable
= f2fs_get_unusable_blocks(sbi
);
1661 if (f2fs_disable_cp_again(sbi
, unusable
)) {
1666 down_write(&sbi
->gc_lock
);
1667 cpc
.reason
= CP_PAUSE
;
1668 set_sbi_flag(sbi
, SBI_CP_DISABLED
);
1669 err
= f2fs_write_checkpoint(sbi
, &cpc
);
1673 spin_lock(&sbi
->stat_lock
);
1674 sbi
->unusable_block_count
= unusable
;
1675 spin_unlock(&sbi
->stat_lock
);
1678 up_write(&sbi
->gc_lock
);
1680 sbi
->sb
->s_flags
= s_flags
; /* Restore SB_RDONLY status */
1684 static void f2fs_enable_checkpoint(struct f2fs_sb_info
*sbi
)
1686 down_write(&sbi
->gc_lock
);
1687 f2fs_dirty_to_prefree(sbi
);
1689 clear_sbi_flag(sbi
, SBI_CP_DISABLED
);
1690 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1691 up_write(&sbi
->gc_lock
);
1693 f2fs_sync_fs(sbi
->sb
, 1);
1696 static int f2fs_remount(struct super_block
*sb
, int *flags
, char *data
)
1698 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
1699 struct f2fs_mount_info org_mount_opt
;
1700 unsigned long old_sb_flags
;
1702 bool need_restart_gc
= false;
1703 bool need_stop_gc
= false;
1704 bool no_extent_cache
= !test_opt(sbi
, EXTENT_CACHE
);
1705 bool disable_checkpoint
= test_opt(sbi
, DISABLE_CHECKPOINT
);
1706 bool no_io_align
= !F2FS_IO_ALIGNED(sbi
);
1707 bool checkpoint_changed
;
1713 * Save the old mount options in case we
1714 * need to restore them.
1716 org_mount_opt
= sbi
->mount_opt
;
1717 old_sb_flags
= sb
->s_flags
;
1720 org_mount_opt
.s_jquota_fmt
= F2FS_OPTION(sbi
).s_jquota_fmt
;
1721 for (i
= 0; i
< MAXQUOTAS
; i
++) {
1722 if (F2FS_OPTION(sbi
).s_qf_names
[i
]) {
1723 org_mount_opt
.s_qf_names
[i
] =
1724 kstrdup(F2FS_OPTION(sbi
).s_qf_names
[i
],
1726 if (!org_mount_opt
.s_qf_names
[i
]) {
1727 for (j
= 0; j
< i
; j
++)
1728 kvfree(org_mount_opt
.s_qf_names
[j
]);
1732 org_mount_opt
.s_qf_names
[i
] = NULL
;
1737 /* recover superblocks we couldn't write due to previous RO mount */
1738 if (!(*flags
& SB_RDONLY
) && is_sbi_flag_set(sbi
, SBI_NEED_SB_WRITE
)) {
1739 err
= f2fs_commit_super(sbi
, false);
1740 f2fs_info(sbi
, "Try to recover all the superblocks, ret: %d",
1743 clear_sbi_flag(sbi
, SBI_NEED_SB_WRITE
);
1746 default_options(sbi
);
1748 /* parse mount options */
1749 err
= parse_options(sb
, data
);
1752 checkpoint_changed
=
1753 disable_checkpoint
!= test_opt(sbi
, DISABLE_CHECKPOINT
);
1756 * Previous and new state of filesystem is RO,
1757 * so skip checking GC and FLUSH_MERGE conditions.
1759 if (f2fs_readonly(sb
) && (*flags
& SB_RDONLY
))
1763 if (!f2fs_readonly(sb
) && (*flags
& SB_RDONLY
)) {
1764 err
= dquot_suspend(sb
, -1);
1767 } else if (f2fs_readonly(sb
) && !(*flags
& SB_RDONLY
)) {
1768 /* dquot_resume needs RW */
1769 sb
->s_flags
&= ~SB_RDONLY
;
1770 if (sb_any_quota_suspended(sb
)) {
1771 dquot_resume(sb
, -1);
1772 } else if (f2fs_sb_has_quota_ino(sbi
)) {
1773 err
= f2fs_enable_quotas(sb
);
1779 /* disallow enable/disable extent_cache dynamically */
1780 if (no_extent_cache
== !!test_opt(sbi
, EXTENT_CACHE
)) {
1782 f2fs_warn(sbi
, "switch extent_cache option is not allowed");
1786 if (no_io_align
== !!F2FS_IO_ALIGNED(sbi
)) {
1788 f2fs_warn(sbi
, "switch io_bits option is not allowed");
1792 if ((*flags
& SB_RDONLY
) && test_opt(sbi
, DISABLE_CHECKPOINT
)) {
1794 f2fs_warn(sbi
, "disabling checkpoint not compatible with read-only");
1799 * We stop the GC thread if FS is mounted as RO
1800 * or if background_gc = off is passed in mount
1801 * option. Also sync the filesystem.
1803 if ((*flags
& SB_RDONLY
) ||
1804 F2FS_OPTION(sbi
).bggc_mode
== BGGC_MODE_OFF
) {
1805 if (sbi
->gc_thread
) {
1806 f2fs_stop_gc_thread(sbi
);
1807 need_restart_gc
= true;
1809 } else if (!sbi
->gc_thread
) {
1810 err
= f2fs_start_gc_thread(sbi
);
1813 need_stop_gc
= true;
1816 if (*flags
& SB_RDONLY
||
1817 F2FS_OPTION(sbi
).whint_mode
!= org_mount_opt
.whint_mode
) {
1818 writeback_inodes_sb(sb
, WB_REASON_SYNC
);
1821 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1822 set_sbi_flag(sbi
, SBI_IS_CLOSE
);
1823 f2fs_sync_fs(sb
, 1);
1824 clear_sbi_flag(sbi
, SBI_IS_CLOSE
);
1827 if (checkpoint_changed
) {
1828 if (test_opt(sbi
, DISABLE_CHECKPOINT
)) {
1829 err
= f2fs_disable_checkpoint(sbi
);
1833 f2fs_enable_checkpoint(sbi
);
1838 * We stop issue flush thread if FS is mounted as RO
1839 * or if flush_merge is not passed in mount option.
1841 if ((*flags
& SB_RDONLY
) || !test_opt(sbi
, FLUSH_MERGE
)) {
1842 clear_opt(sbi
, FLUSH_MERGE
);
1843 f2fs_destroy_flush_cmd_control(sbi
, false);
1845 err
= f2fs_create_flush_cmd_control(sbi
);
1851 /* Release old quota file names */
1852 for (i
= 0; i
< MAXQUOTAS
; i
++)
1853 kvfree(org_mount_opt
.s_qf_names
[i
]);
1855 /* Update the POSIXACL Flag */
1856 sb
->s_flags
= (sb
->s_flags
& ~SB_POSIXACL
) |
1857 (test_opt(sbi
, POSIX_ACL
) ? SB_POSIXACL
: 0);
1859 limit_reserve_root(sbi
);
1860 adjust_unusable_cap_perc(sbi
);
1861 *flags
= (*flags
& ~SB_LAZYTIME
) | (sb
->s_flags
& SB_LAZYTIME
);
1864 if (need_restart_gc
) {
1865 if (f2fs_start_gc_thread(sbi
))
1866 f2fs_warn(sbi
, "background gc thread has stopped");
1867 } else if (need_stop_gc
) {
1868 f2fs_stop_gc_thread(sbi
);
1872 F2FS_OPTION(sbi
).s_jquota_fmt
= org_mount_opt
.s_jquota_fmt
;
1873 for (i
= 0; i
< MAXQUOTAS
; i
++) {
1874 kvfree(F2FS_OPTION(sbi
).s_qf_names
[i
]);
1875 F2FS_OPTION(sbi
).s_qf_names
[i
] = org_mount_opt
.s_qf_names
[i
];
1878 sbi
->mount_opt
= org_mount_opt
;
1879 sb
->s_flags
= old_sb_flags
;
1884 /* Read data from quotafile */
1885 static ssize_t
f2fs_quota_read(struct super_block
*sb
, int type
, char *data
,
1886 size_t len
, loff_t off
)
1888 struct inode
*inode
= sb_dqopt(sb
)->files
[type
];
1889 struct address_space
*mapping
= inode
->i_mapping
;
1890 block_t blkidx
= F2FS_BYTES_TO_BLK(off
);
1891 int offset
= off
& (sb
->s_blocksize
- 1);
1894 loff_t i_size
= i_size_read(inode
);
1901 if (off
+ len
> i_size
)
1904 while (toread
> 0) {
1905 tocopy
= min_t(unsigned long, sb
->s_blocksize
- offset
, toread
);
1907 page
= read_cache_page_gfp(mapping
, blkidx
, GFP_NOFS
);
1909 if (PTR_ERR(page
) == -ENOMEM
) {
1910 congestion_wait(BLK_RW_ASYNC
,
1911 DEFAULT_IO_TIMEOUT
);
1914 set_sbi_flag(F2FS_SB(sb
), SBI_QUOTA_NEED_REPAIR
);
1915 return PTR_ERR(page
);
1920 if (unlikely(page
->mapping
!= mapping
)) {
1921 f2fs_put_page(page
, 1);
1924 if (unlikely(!PageUptodate(page
))) {
1925 f2fs_put_page(page
, 1);
1926 set_sbi_flag(F2FS_SB(sb
), SBI_QUOTA_NEED_REPAIR
);
1930 kaddr
= kmap_atomic(page
);
1931 memcpy(data
, kaddr
+ offset
, tocopy
);
1932 kunmap_atomic(kaddr
);
1933 f2fs_put_page(page
, 1);
1943 /* Write to quotafile */
1944 static ssize_t
f2fs_quota_write(struct super_block
*sb
, int type
,
1945 const char *data
, size_t len
, loff_t off
)
1947 struct inode
*inode
= sb_dqopt(sb
)->files
[type
];
1948 struct address_space
*mapping
= inode
->i_mapping
;
1949 const struct address_space_operations
*a_ops
= mapping
->a_ops
;
1950 int offset
= off
& (sb
->s_blocksize
- 1);
1951 size_t towrite
= len
;
1953 void *fsdata
= NULL
;
1958 while (towrite
> 0) {
1959 tocopy
= min_t(unsigned long, sb
->s_blocksize
- offset
,
1962 err
= a_ops
->write_begin(NULL
, mapping
, off
, tocopy
, 0,
1964 if (unlikely(err
)) {
1965 if (err
== -ENOMEM
) {
1966 congestion_wait(BLK_RW_ASYNC
,
1967 DEFAULT_IO_TIMEOUT
);
1970 set_sbi_flag(F2FS_SB(sb
), SBI_QUOTA_NEED_REPAIR
);
1974 kaddr
= kmap_atomic(page
);
1975 memcpy(kaddr
+ offset
, data
, tocopy
);
1976 kunmap_atomic(kaddr
);
1977 flush_dcache_page(page
);
1979 a_ops
->write_end(NULL
, mapping
, off
, tocopy
, tocopy
,
1990 inode
->i_mtime
= inode
->i_ctime
= current_time(inode
);
1991 f2fs_mark_inode_dirty_sync(inode
, false);
1992 return len
- towrite
;
1995 static struct dquot
**f2fs_get_dquots(struct inode
*inode
)
1997 return F2FS_I(inode
)->i_dquot
;
2000 static qsize_t
*f2fs_get_reserved_space(struct inode
*inode
)
2002 return &F2FS_I(inode
)->i_reserved_quota
;
2005 static int f2fs_quota_on_mount(struct f2fs_sb_info
*sbi
, int type
)
2007 if (is_set_ckpt_flags(sbi
, CP_QUOTA_NEED_FSCK_FLAG
)) {
2008 f2fs_err(sbi
, "quota sysfile may be corrupted, skip loading it");
2012 return dquot_quota_on_mount(sbi
->sb
, F2FS_OPTION(sbi
).s_qf_names
[type
],
2013 F2FS_OPTION(sbi
).s_jquota_fmt
, type
);
2016 int f2fs_enable_quota_files(struct f2fs_sb_info
*sbi
, bool rdonly
)
2021 if (f2fs_sb_has_quota_ino(sbi
) && rdonly
) {
2022 err
= f2fs_enable_quotas(sbi
->sb
);
2024 f2fs_err(sbi
, "Cannot turn on quota_ino: %d", err
);
2030 for (i
= 0; i
< MAXQUOTAS
; i
++) {
2031 if (F2FS_OPTION(sbi
).s_qf_names
[i
]) {
2032 err
= f2fs_quota_on_mount(sbi
, i
);
2037 f2fs_err(sbi
, "Cannot turn on quotas: %d on %d",
2044 static int f2fs_quota_enable(struct super_block
*sb
, int type
, int format_id
,
2047 struct inode
*qf_inode
;
2048 unsigned long qf_inum
;
2051 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb
)));
2053 qf_inum
= f2fs_qf_ino(sb
, type
);
2057 qf_inode
= f2fs_iget(sb
, qf_inum
);
2058 if (IS_ERR(qf_inode
)) {
2059 f2fs_err(F2FS_SB(sb
), "Bad quota inode %u:%lu", type
, qf_inum
);
2060 return PTR_ERR(qf_inode
);
2063 /* Don't account quota for quota files to avoid recursion */
2064 qf_inode
->i_flags
|= S_NOQUOTA
;
2065 err
= dquot_load_quota_inode(qf_inode
, type
, format_id
, flags
);
2070 static int f2fs_enable_quotas(struct super_block
*sb
)
2072 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
2074 unsigned long qf_inum
;
2075 bool quota_mopt
[MAXQUOTAS
] = {
2076 test_opt(sbi
, USRQUOTA
),
2077 test_opt(sbi
, GRPQUOTA
),
2078 test_opt(sbi
, PRJQUOTA
),
2081 if (is_set_ckpt_flags(F2FS_SB(sb
), CP_QUOTA_NEED_FSCK_FLAG
)) {
2082 f2fs_err(sbi
, "quota file may be corrupted, skip loading it");
2086 sb_dqopt(sb
)->flags
|= DQUOT_QUOTA_SYS_FILE
;
2088 for (type
= 0; type
< MAXQUOTAS
; type
++) {
2089 qf_inum
= f2fs_qf_ino(sb
, type
);
2091 err
= f2fs_quota_enable(sb
, type
, QFMT_VFS_V1
,
2092 DQUOT_USAGE_ENABLED
|
2093 (quota_mopt
[type
] ? DQUOT_LIMITS_ENABLED
: 0));
2095 f2fs_err(sbi
, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2097 for (type
--; type
>= 0; type
--)
2098 dquot_quota_off(sb
, type
);
2099 set_sbi_flag(F2FS_SB(sb
),
2100 SBI_QUOTA_NEED_REPAIR
);
2108 int f2fs_quota_sync(struct super_block
*sb
, int type
)
2110 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
2111 struct quota_info
*dqopt
= sb_dqopt(sb
);
2118 * down_read(quota_sem)
2119 * dquot_writeback_dquots()
2122 * down_read(quota_sem)
2126 down_read(&sbi
->quota_sem
);
2127 ret
= dquot_writeback_dquots(sb
, type
);
2132 * Now when everything is written we can discard the pagecache so
2133 * that userspace sees the changes.
2135 for (cnt
= 0; cnt
< MAXQUOTAS
; cnt
++) {
2136 struct address_space
*mapping
;
2138 if (type
!= -1 && cnt
!= type
)
2140 if (!sb_has_quota_active(sb
, cnt
))
2143 mapping
= dqopt
->files
[cnt
]->i_mapping
;
2145 ret
= filemap_fdatawrite(mapping
);
2149 /* if we are using journalled quota */
2150 if (is_journalled_quota(sbi
))
2153 ret
= filemap_fdatawait(mapping
);
2155 set_sbi_flag(F2FS_SB(sb
), SBI_QUOTA_NEED_REPAIR
);
2157 inode_lock(dqopt
->files
[cnt
]);
2158 truncate_inode_pages(&dqopt
->files
[cnt
]->i_data
, 0);
2159 inode_unlock(dqopt
->files
[cnt
]);
2163 set_sbi_flag(F2FS_SB(sb
), SBI_QUOTA_NEED_REPAIR
);
2164 up_read(&sbi
->quota_sem
);
2165 f2fs_unlock_op(sbi
);
2169 static int f2fs_quota_on(struct super_block
*sb
, int type
, int format_id
,
2170 const struct path
*path
)
2172 struct inode
*inode
;
2175 /* if quota sysfile exists, deny enabling quota with specific file */
2176 if (f2fs_sb_has_quota_ino(F2FS_SB(sb
))) {
2177 f2fs_err(F2FS_SB(sb
), "quota sysfile already exists");
2181 err
= f2fs_quota_sync(sb
, type
);
2185 err
= dquot_quota_on(sb
, type
, format_id
, path
);
2189 inode
= d_inode(path
->dentry
);
2192 F2FS_I(inode
)->i_flags
|= F2FS_NOATIME_FL
| F2FS_IMMUTABLE_FL
;
2193 f2fs_set_inode_flags(inode
);
2194 inode_unlock(inode
);
2195 f2fs_mark_inode_dirty_sync(inode
, false);
2200 static int __f2fs_quota_off(struct super_block
*sb
, int type
)
2202 struct inode
*inode
= sb_dqopt(sb
)->files
[type
];
2205 if (!inode
|| !igrab(inode
))
2206 return dquot_quota_off(sb
, type
);
2208 err
= f2fs_quota_sync(sb
, type
);
2212 err
= dquot_quota_off(sb
, type
);
2213 if (err
|| f2fs_sb_has_quota_ino(F2FS_SB(sb
)))
2217 F2FS_I(inode
)->i_flags
&= ~(F2FS_NOATIME_FL
| F2FS_IMMUTABLE_FL
);
2218 f2fs_set_inode_flags(inode
);
2219 inode_unlock(inode
);
2220 f2fs_mark_inode_dirty_sync(inode
, false);
2226 static int f2fs_quota_off(struct super_block
*sb
, int type
)
2228 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
2231 err
= __f2fs_quota_off(sb
, type
);
2234 * quotactl can shutdown journalled quota, result in inconsistence
2235 * between quota record and fs data by following updates, tag the
2236 * flag to let fsck be aware of it.
2238 if (is_journalled_quota(sbi
))
2239 set_sbi_flag(sbi
, SBI_QUOTA_NEED_REPAIR
);
2243 void f2fs_quota_off_umount(struct super_block
*sb
)
2248 for (type
= 0; type
< MAXQUOTAS
; type
++) {
2249 err
= __f2fs_quota_off(sb
, type
);
2251 int ret
= dquot_quota_off(sb
, type
);
2253 f2fs_err(F2FS_SB(sb
), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2255 set_sbi_flag(F2FS_SB(sb
), SBI_QUOTA_NEED_REPAIR
);
2259 * In case of checkpoint=disable, we must flush quota blocks.
2260 * This can cause NULL exception for node_inode in end_io, since
2261 * put_super already dropped it.
2263 sync_filesystem(sb
);
2266 static void f2fs_truncate_quota_inode_pages(struct super_block
*sb
)
2268 struct quota_info
*dqopt
= sb_dqopt(sb
);
2271 for (type
= 0; type
< MAXQUOTAS
; type
++) {
2272 if (!dqopt
->files
[type
])
2274 f2fs_inode_synced(dqopt
->files
[type
]);
2278 static int f2fs_dquot_commit(struct dquot
*dquot
)
2280 struct f2fs_sb_info
*sbi
= F2FS_SB(dquot
->dq_sb
);
2283 down_read_nested(&sbi
->quota_sem
, SINGLE_DEPTH_NESTING
);
2284 ret
= dquot_commit(dquot
);
2286 set_sbi_flag(sbi
, SBI_QUOTA_NEED_REPAIR
);
2287 up_read(&sbi
->quota_sem
);
2291 static int f2fs_dquot_acquire(struct dquot
*dquot
)
2293 struct f2fs_sb_info
*sbi
= F2FS_SB(dquot
->dq_sb
);
2296 down_read(&sbi
->quota_sem
);
2297 ret
= dquot_acquire(dquot
);
2299 set_sbi_flag(sbi
, SBI_QUOTA_NEED_REPAIR
);
2300 up_read(&sbi
->quota_sem
);
2304 static int f2fs_dquot_release(struct dquot
*dquot
)
2306 struct f2fs_sb_info
*sbi
= F2FS_SB(dquot
->dq_sb
);
2307 int ret
= dquot_release(dquot
);
2310 set_sbi_flag(sbi
, SBI_QUOTA_NEED_REPAIR
);
2314 static int f2fs_dquot_mark_dquot_dirty(struct dquot
*dquot
)
2316 struct super_block
*sb
= dquot
->dq_sb
;
2317 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
2318 int ret
= dquot_mark_dquot_dirty(dquot
);
2320 /* if we are using journalled quota */
2321 if (is_journalled_quota(sbi
))
2322 set_sbi_flag(sbi
, SBI_QUOTA_NEED_FLUSH
);
2327 static int f2fs_dquot_commit_info(struct super_block
*sb
, int type
)
2329 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
2330 int ret
= dquot_commit_info(sb
, type
);
2333 set_sbi_flag(sbi
, SBI_QUOTA_NEED_REPAIR
);
2337 static int f2fs_get_projid(struct inode
*inode
, kprojid_t
*projid
)
2339 *projid
= F2FS_I(inode
)->i_projid
;
2343 static const struct dquot_operations f2fs_quota_operations
= {
2344 .get_reserved_space
= f2fs_get_reserved_space
,
2345 .write_dquot
= f2fs_dquot_commit
,
2346 .acquire_dquot
= f2fs_dquot_acquire
,
2347 .release_dquot
= f2fs_dquot_release
,
2348 .mark_dirty
= f2fs_dquot_mark_dquot_dirty
,
2349 .write_info
= f2fs_dquot_commit_info
,
2350 .alloc_dquot
= dquot_alloc
,
2351 .destroy_dquot
= dquot_destroy
,
2352 .get_projid
= f2fs_get_projid
,
2353 .get_next_id
= dquot_get_next_id
,
2356 static const struct quotactl_ops f2fs_quotactl_ops
= {
2357 .quota_on
= f2fs_quota_on
,
2358 .quota_off
= f2fs_quota_off
,
2359 .quota_sync
= f2fs_quota_sync
,
2360 .get_state
= dquot_get_state
,
2361 .set_info
= dquot_set_dqinfo
,
2362 .get_dqblk
= dquot_get_dqblk
,
2363 .set_dqblk
= dquot_set_dqblk
,
2364 .get_nextdqblk
= dquot_get_next_dqblk
,
2367 int f2fs_quota_sync(struct super_block
*sb
, int type
)
2372 void f2fs_quota_off_umount(struct super_block
*sb
)
2377 static const struct super_operations f2fs_sops
= {
2378 .alloc_inode
= f2fs_alloc_inode
,
2379 .free_inode
= f2fs_free_inode
,
2380 .drop_inode
= f2fs_drop_inode
,
2381 .write_inode
= f2fs_write_inode
,
2382 .dirty_inode
= f2fs_dirty_inode
,
2383 .show_options
= f2fs_show_options
,
2385 .quota_read
= f2fs_quota_read
,
2386 .quota_write
= f2fs_quota_write
,
2387 .get_dquots
= f2fs_get_dquots
,
2389 .evict_inode
= f2fs_evict_inode
,
2390 .put_super
= f2fs_put_super
,
2391 .sync_fs
= f2fs_sync_fs
,
2392 .freeze_fs
= f2fs_freeze
,
2393 .unfreeze_fs
= f2fs_unfreeze
,
2394 .statfs
= f2fs_statfs
,
2395 .remount_fs
= f2fs_remount
,
2398 #ifdef CONFIG_FS_ENCRYPTION
2399 static int f2fs_get_context(struct inode
*inode
, void *ctx
, size_t len
)
2401 return f2fs_getxattr(inode
, F2FS_XATTR_INDEX_ENCRYPTION
,
2402 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT
,
2406 static int f2fs_set_context(struct inode
*inode
, const void *ctx
, size_t len
,
2409 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
2412 * Encrypting the root directory is not allowed because fsck
2413 * expects lost+found directory to exist and remain unencrypted
2414 * if LOST_FOUND feature is enabled.
2417 if (f2fs_sb_has_lost_found(sbi
) &&
2418 inode
->i_ino
== F2FS_ROOT_INO(sbi
))
2421 return f2fs_setxattr(inode
, F2FS_XATTR_INDEX_ENCRYPTION
,
2422 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT
,
2423 ctx
, len
, fs_data
, XATTR_CREATE
);
2426 static bool f2fs_dummy_context(struct inode
*inode
)
2428 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode
));
2431 static bool f2fs_has_stable_inodes(struct super_block
*sb
)
2436 static void f2fs_get_ino_and_lblk_bits(struct super_block
*sb
,
2437 int *ino_bits_ret
, int *lblk_bits_ret
)
2439 *ino_bits_ret
= 8 * sizeof(nid_t
);
2440 *lblk_bits_ret
= 8 * sizeof(block_t
);
2443 static const struct fscrypt_operations f2fs_cryptops
= {
2444 .key_prefix
= "f2fs:",
2445 .get_context
= f2fs_get_context
,
2446 .set_context
= f2fs_set_context
,
2447 .dummy_context
= f2fs_dummy_context
,
2448 .empty_dir
= f2fs_empty_dir
,
2449 .max_namelen
= F2FS_NAME_LEN
,
2450 .has_stable_inodes
= f2fs_has_stable_inodes
,
2451 .get_ino_and_lblk_bits
= f2fs_get_ino_and_lblk_bits
,
2455 static struct inode
*f2fs_nfs_get_inode(struct super_block
*sb
,
2456 u64 ino
, u32 generation
)
2458 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
2459 struct inode
*inode
;
2461 if (f2fs_check_nid_range(sbi
, ino
))
2462 return ERR_PTR(-ESTALE
);
2465 * f2fs_iget isn't quite right if the inode is currently unallocated!
2466 * However f2fs_iget currently does appropriate checks to handle stale
2467 * inodes so everything is OK.
2469 inode
= f2fs_iget(sb
, ino
);
2471 return ERR_CAST(inode
);
2472 if (unlikely(generation
&& inode
->i_generation
!= generation
)) {
2473 /* we didn't find the right inode.. */
2475 return ERR_PTR(-ESTALE
);
2480 static struct dentry
*f2fs_fh_to_dentry(struct super_block
*sb
, struct fid
*fid
,
2481 int fh_len
, int fh_type
)
2483 return generic_fh_to_dentry(sb
, fid
, fh_len
, fh_type
,
2484 f2fs_nfs_get_inode
);
2487 static struct dentry
*f2fs_fh_to_parent(struct super_block
*sb
, struct fid
*fid
,
2488 int fh_len
, int fh_type
)
2490 return generic_fh_to_parent(sb
, fid
, fh_len
, fh_type
,
2491 f2fs_nfs_get_inode
);
2494 static const struct export_operations f2fs_export_ops
= {
2495 .fh_to_dentry
= f2fs_fh_to_dentry
,
2496 .fh_to_parent
= f2fs_fh_to_parent
,
2497 .get_parent
= f2fs_get_parent
,
2500 static loff_t
max_file_blocks(void)
2503 loff_t leaf_count
= DEF_ADDRS_PER_BLOCK
;
2506 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
2507 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
2508 * space in inode.i_addr, it will be more safe to reassign
2512 /* two direct node blocks */
2513 result
+= (leaf_count
* 2);
2515 /* two indirect node blocks */
2516 leaf_count
*= NIDS_PER_BLOCK
;
2517 result
+= (leaf_count
* 2);
2519 /* one double indirect node block */
2520 leaf_count
*= NIDS_PER_BLOCK
;
2521 result
+= leaf_count
;
2526 static int __f2fs_commit_super(struct buffer_head
*bh
,
2527 struct f2fs_super_block
*super
)
2531 memcpy(bh
->b_data
+ F2FS_SUPER_OFFSET
, super
, sizeof(*super
));
2532 set_buffer_dirty(bh
);
2535 /* it's rare case, we can do fua all the time */
2536 return __sync_dirty_buffer(bh
, REQ_SYNC
| REQ_PREFLUSH
| REQ_FUA
);
2539 static inline bool sanity_check_area_boundary(struct f2fs_sb_info
*sbi
,
2540 struct buffer_head
*bh
)
2542 struct f2fs_super_block
*raw_super
= (struct f2fs_super_block
*)
2543 (bh
->b_data
+ F2FS_SUPER_OFFSET
);
2544 struct super_block
*sb
= sbi
->sb
;
2545 u32 segment0_blkaddr
= le32_to_cpu(raw_super
->segment0_blkaddr
);
2546 u32 cp_blkaddr
= le32_to_cpu(raw_super
->cp_blkaddr
);
2547 u32 sit_blkaddr
= le32_to_cpu(raw_super
->sit_blkaddr
);
2548 u32 nat_blkaddr
= le32_to_cpu(raw_super
->nat_blkaddr
);
2549 u32 ssa_blkaddr
= le32_to_cpu(raw_super
->ssa_blkaddr
);
2550 u32 main_blkaddr
= le32_to_cpu(raw_super
->main_blkaddr
);
2551 u32 segment_count_ckpt
= le32_to_cpu(raw_super
->segment_count_ckpt
);
2552 u32 segment_count_sit
= le32_to_cpu(raw_super
->segment_count_sit
);
2553 u32 segment_count_nat
= le32_to_cpu(raw_super
->segment_count_nat
);
2554 u32 segment_count_ssa
= le32_to_cpu(raw_super
->segment_count_ssa
);
2555 u32 segment_count_main
= le32_to_cpu(raw_super
->segment_count_main
);
2556 u32 segment_count
= le32_to_cpu(raw_super
->segment_count
);
2557 u32 log_blocks_per_seg
= le32_to_cpu(raw_super
->log_blocks_per_seg
);
2558 u64 main_end_blkaddr
= main_blkaddr
+
2559 (segment_count_main
<< log_blocks_per_seg
);
2560 u64 seg_end_blkaddr
= segment0_blkaddr
+
2561 (segment_count
<< log_blocks_per_seg
);
2563 if (segment0_blkaddr
!= cp_blkaddr
) {
2564 f2fs_info(sbi
, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2565 segment0_blkaddr
, cp_blkaddr
);
2569 if (cp_blkaddr
+ (segment_count_ckpt
<< log_blocks_per_seg
) !=
2571 f2fs_info(sbi
, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2572 cp_blkaddr
, sit_blkaddr
,
2573 segment_count_ckpt
<< log_blocks_per_seg
);
2577 if (sit_blkaddr
+ (segment_count_sit
<< log_blocks_per_seg
) !=
2579 f2fs_info(sbi
, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2580 sit_blkaddr
, nat_blkaddr
,
2581 segment_count_sit
<< log_blocks_per_seg
);
2585 if (nat_blkaddr
+ (segment_count_nat
<< log_blocks_per_seg
) !=
2587 f2fs_info(sbi
, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2588 nat_blkaddr
, ssa_blkaddr
,
2589 segment_count_nat
<< log_blocks_per_seg
);
2593 if (ssa_blkaddr
+ (segment_count_ssa
<< log_blocks_per_seg
) !=
2595 f2fs_info(sbi
, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2596 ssa_blkaddr
, main_blkaddr
,
2597 segment_count_ssa
<< log_blocks_per_seg
);
2601 if (main_end_blkaddr
> seg_end_blkaddr
) {
2602 f2fs_info(sbi
, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2605 (segment_count
<< log_blocks_per_seg
),
2606 segment_count_main
<< log_blocks_per_seg
);
2608 } else if (main_end_blkaddr
< seg_end_blkaddr
) {
2612 /* fix in-memory information all the time */
2613 raw_super
->segment_count
= cpu_to_le32((main_end_blkaddr
-
2614 segment0_blkaddr
) >> log_blocks_per_seg
);
2616 if (f2fs_readonly(sb
) || bdev_read_only(sb
->s_bdev
)) {
2617 set_sbi_flag(sbi
, SBI_NEED_SB_WRITE
);
2620 err
= __f2fs_commit_super(bh
, NULL
);
2621 res
= err
? "failed" : "done";
2623 f2fs_info(sbi
, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2626 (segment_count
<< log_blocks_per_seg
),
2627 segment_count_main
<< log_blocks_per_seg
);
2634 static int sanity_check_raw_super(struct f2fs_sb_info
*sbi
,
2635 struct buffer_head
*bh
)
2637 block_t segment_count
, segs_per_sec
, secs_per_zone
;
2638 block_t total_sections
, blocks_per_seg
;
2639 struct f2fs_super_block
*raw_super
= (struct f2fs_super_block
*)
2640 (bh
->b_data
+ F2FS_SUPER_OFFSET
);
2641 unsigned int blocksize
;
2642 size_t crc_offset
= 0;
2645 if (le32_to_cpu(raw_super
->magic
) != F2FS_SUPER_MAGIC
) {
2646 f2fs_info(sbi
, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2647 F2FS_SUPER_MAGIC
, le32_to_cpu(raw_super
->magic
));
2651 /* Check checksum_offset and crc in superblock */
2652 if (__F2FS_HAS_FEATURE(raw_super
, F2FS_FEATURE_SB_CHKSUM
)) {
2653 crc_offset
= le32_to_cpu(raw_super
->checksum_offset
);
2655 offsetof(struct f2fs_super_block
, crc
)) {
2656 f2fs_info(sbi
, "Invalid SB checksum offset: %zu",
2658 return -EFSCORRUPTED
;
2660 crc
= le32_to_cpu(raw_super
->crc
);
2661 if (!f2fs_crc_valid(sbi
, crc
, raw_super
, crc_offset
)) {
2662 f2fs_info(sbi
, "Invalid SB checksum value: %u", crc
);
2663 return -EFSCORRUPTED
;
2667 /* Currently, support only 4KB page cache size */
2668 if (F2FS_BLKSIZE
!= PAGE_SIZE
) {
2669 f2fs_info(sbi
, "Invalid page_cache_size (%lu), supports only 4KB",
2671 return -EFSCORRUPTED
;
2674 /* Currently, support only 4KB block size */
2675 blocksize
= 1 << le32_to_cpu(raw_super
->log_blocksize
);
2676 if (blocksize
!= F2FS_BLKSIZE
) {
2677 f2fs_info(sbi
, "Invalid blocksize (%u), supports only 4KB",
2679 return -EFSCORRUPTED
;
2682 /* check log blocks per segment */
2683 if (le32_to_cpu(raw_super
->log_blocks_per_seg
) != 9) {
2684 f2fs_info(sbi
, "Invalid log blocks per segment (%u)",
2685 le32_to_cpu(raw_super
->log_blocks_per_seg
));
2686 return -EFSCORRUPTED
;
2689 /* Currently, support 512/1024/2048/4096 bytes sector size */
2690 if (le32_to_cpu(raw_super
->log_sectorsize
) >
2691 F2FS_MAX_LOG_SECTOR_SIZE
||
2692 le32_to_cpu(raw_super
->log_sectorsize
) <
2693 F2FS_MIN_LOG_SECTOR_SIZE
) {
2694 f2fs_info(sbi
, "Invalid log sectorsize (%u)",
2695 le32_to_cpu(raw_super
->log_sectorsize
));
2696 return -EFSCORRUPTED
;
2698 if (le32_to_cpu(raw_super
->log_sectors_per_block
) +
2699 le32_to_cpu(raw_super
->log_sectorsize
) !=
2700 F2FS_MAX_LOG_SECTOR_SIZE
) {
2701 f2fs_info(sbi
, "Invalid log sectors per block(%u) log sectorsize(%u)",
2702 le32_to_cpu(raw_super
->log_sectors_per_block
),
2703 le32_to_cpu(raw_super
->log_sectorsize
));
2704 return -EFSCORRUPTED
;
2707 segment_count
= le32_to_cpu(raw_super
->segment_count
);
2708 segs_per_sec
= le32_to_cpu(raw_super
->segs_per_sec
);
2709 secs_per_zone
= le32_to_cpu(raw_super
->secs_per_zone
);
2710 total_sections
= le32_to_cpu(raw_super
->section_count
);
2712 /* blocks_per_seg should be 512, given the above check */
2713 blocks_per_seg
= 1 << le32_to_cpu(raw_super
->log_blocks_per_seg
);
2715 if (segment_count
> F2FS_MAX_SEGMENT
||
2716 segment_count
< F2FS_MIN_SEGMENTS
) {
2717 f2fs_info(sbi
, "Invalid segment count (%u)", segment_count
);
2718 return -EFSCORRUPTED
;
2721 if (total_sections
> segment_count
||
2722 total_sections
< F2FS_MIN_SEGMENTS
||
2723 segs_per_sec
> segment_count
|| !segs_per_sec
) {
2724 f2fs_info(sbi
, "Invalid segment/section count (%u, %u x %u)",
2725 segment_count
, total_sections
, segs_per_sec
);
2726 return -EFSCORRUPTED
;
2729 if ((segment_count
/ segs_per_sec
) < total_sections
) {
2730 f2fs_info(sbi
, "Small segment_count (%u < %u * %u)",
2731 segment_count
, segs_per_sec
, total_sections
);
2732 return -EFSCORRUPTED
;
2735 if (segment_count
> (le64_to_cpu(raw_super
->block_count
) >> 9)) {
2736 f2fs_info(sbi
, "Wrong segment_count / block_count (%u > %llu)",
2737 segment_count
, le64_to_cpu(raw_super
->block_count
));
2738 return -EFSCORRUPTED
;
2741 if (RDEV(0).path
[0]) {
2742 block_t dev_seg_count
= le32_to_cpu(RDEV(0).total_segments
);
2745 while (i
< MAX_DEVICES
&& RDEV(i
).path
[0]) {
2746 dev_seg_count
+= le32_to_cpu(RDEV(i
).total_segments
);
2749 if (segment_count
!= dev_seg_count
) {
2750 f2fs_info(sbi
, "Segment count (%u) mismatch with total segments from devices (%u)",
2751 segment_count
, dev_seg_count
);
2752 return -EFSCORRUPTED
;
2756 if (secs_per_zone
> total_sections
|| !secs_per_zone
) {
2757 f2fs_info(sbi
, "Wrong secs_per_zone / total_sections (%u, %u)",
2758 secs_per_zone
, total_sections
);
2759 return -EFSCORRUPTED
;
2761 if (le32_to_cpu(raw_super
->extension_count
) > F2FS_MAX_EXTENSION
||
2762 raw_super
->hot_ext_count
> F2FS_MAX_EXTENSION
||
2763 (le32_to_cpu(raw_super
->extension_count
) +
2764 raw_super
->hot_ext_count
) > F2FS_MAX_EXTENSION
) {
2765 f2fs_info(sbi
, "Corrupted extension count (%u + %u > %u)",
2766 le32_to_cpu(raw_super
->extension_count
),
2767 raw_super
->hot_ext_count
,
2768 F2FS_MAX_EXTENSION
);
2769 return -EFSCORRUPTED
;
2772 if (le32_to_cpu(raw_super
->cp_payload
) >
2773 (blocks_per_seg
- F2FS_CP_PACKS
)) {
2774 f2fs_info(sbi
, "Insane cp_payload (%u > %u)",
2775 le32_to_cpu(raw_super
->cp_payload
),
2776 blocks_per_seg
- F2FS_CP_PACKS
);
2777 return -EFSCORRUPTED
;
2780 /* check reserved ino info */
2781 if (le32_to_cpu(raw_super
->node_ino
) != 1 ||
2782 le32_to_cpu(raw_super
->meta_ino
) != 2 ||
2783 le32_to_cpu(raw_super
->root_ino
) != 3) {
2784 f2fs_info(sbi
, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2785 le32_to_cpu(raw_super
->node_ino
),
2786 le32_to_cpu(raw_super
->meta_ino
),
2787 le32_to_cpu(raw_super
->root_ino
));
2788 return -EFSCORRUPTED
;
2791 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
2792 if (sanity_check_area_boundary(sbi
, bh
))
2793 return -EFSCORRUPTED
;
2798 int f2fs_sanity_check_ckpt(struct f2fs_sb_info
*sbi
)
2800 unsigned int total
, fsmeta
;
2801 struct f2fs_super_block
*raw_super
= F2FS_RAW_SUPER(sbi
);
2802 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
2803 unsigned int ovp_segments
, reserved_segments
;
2804 unsigned int main_segs
, blocks_per_seg
;
2805 unsigned int sit_segs
, nat_segs
;
2806 unsigned int sit_bitmap_size
, nat_bitmap_size
;
2807 unsigned int log_blocks_per_seg
;
2808 unsigned int segment_count_main
;
2809 unsigned int cp_pack_start_sum
, cp_payload
;
2810 block_t user_block_count
, valid_user_blocks
;
2811 block_t avail_node_count
, valid_node_count
;
2814 total
= le32_to_cpu(raw_super
->segment_count
);
2815 fsmeta
= le32_to_cpu(raw_super
->segment_count_ckpt
);
2816 sit_segs
= le32_to_cpu(raw_super
->segment_count_sit
);
2818 nat_segs
= le32_to_cpu(raw_super
->segment_count_nat
);
2820 fsmeta
+= le32_to_cpu(ckpt
->rsvd_segment_count
);
2821 fsmeta
+= le32_to_cpu(raw_super
->segment_count_ssa
);
2823 if (unlikely(fsmeta
>= total
))
2826 ovp_segments
= le32_to_cpu(ckpt
->overprov_segment_count
);
2827 reserved_segments
= le32_to_cpu(ckpt
->rsvd_segment_count
);
2829 if (unlikely(fsmeta
< F2FS_MIN_SEGMENTS
||
2830 ovp_segments
== 0 || reserved_segments
== 0)) {
2831 f2fs_err(sbi
, "Wrong layout: check mkfs.f2fs version");
2835 user_block_count
= le64_to_cpu(ckpt
->user_block_count
);
2836 segment_count_main
= le32_to_cpu(raw_super
->segment_count_main
);
2837 log_blocks_per_seg
= le32_to_cpu(raw_super
->log_blocks_per_seg
);
2838 if (!user_block_count
|| user_block_count
>=
2839 segment_count_main
<< log_blocks_per_seg
) {
2840 f2fs_err(sbi
, "Wrong user_block_count: %u",
2845 valid_user_blocks
= le64_to_cpu(ckpt
->valid_block_count
);
2846 if (valid_user_blocks
> user_block_count
) {
2847 f2fs_err(sbi
, "Wrong valid_user_blocks: %u, user_block_count: %u",
2848 valid_user_blocks
, user_block_count
);
2852 valid_node_count
= le32_to_cpu(ckpt
->valid_node_count
);
2853 avail_node_count
= sbi
->total_node_count
- F2FS_RESERVED_NODE_NUM
;
2854 if (valid_node_count
> avail_node_count
) {
2855 f2fs_err(sbi
, "Wrong valid_node_count: %u, avail_node_count: %u",
2856 valid_node_count
, avail_node_count
);
2860 main_segs
= le32_to_cpu(raw_super
->segment_count_main
);
2861 blocks_per_seg
= sbi
->blocks_per_seg
;
2863 for (i
= 0; i
< NR_CURSEG_NODE_TYPE
; i
++) {
2864 if (le32_to_cpu(ckpt
->cur_node_segno
[i
]) >= main_segs
||
2865 le16_to_cpu(ckpt
->cur_node_blkoff
[i
]) >= blocks_per_seg
)
2867 for (j
= i
+ 1; j
< NR_CURSEG_NODE_TYPE
; j
++) {
2868 if (le32_to_cpu(ckpt
->cur_node_segno
[i
]) ==
2869 le32_to_cpu(ckpt
->cur_node_segno
[j
])) {
2870 f2fs_err(sbi
, "Node segment (%u, %u) has the same segno: %u",
2872 le32_to_cpu(ckpt
->cur_node_segno
[i
]));
2877 for (i
= 0; i
< NR_CURSEG_DATA_TYPE
; i
++) {
2878 if (le32_to_cpu(ckpt
->cur_data_segno
[i
]) >= main_segs
||
2879 le16_to_cpu(ckpt
->cur_data_blkoff
[i
]) >= blocks_per_seg
)
2881 for (j
= i
+ 1; j
< NR_CURSEG_DATA_TYPE
; j
++) {
2882 if (le32_to_cpu(ckpt
->cur_data_segno
[i
]) ==
2883 le32_to_cpu(ckpt
->cur_data_segno
[j
])) {
2884 f2fs_err(sbi
, "Data segment (%u, %u) has the same segno: %u",
2886 le32_to_cpu(ckpt
->cur_data_segno
[i
]));
2891 for (i
= 0; i
< NR_CURSEG_NODE_TYPE
; i
++) {
2892 for (j
= 0; j
< NR_CURSEG_DATA_TYPE
; j
++) {
2893 if (le32_to_cpu(ckpt
->cur_node_segno
[i
]) ==
2894 le32_to_cpu(ckpt
->cur_data_segno
[j
])) {
2895 f2fs_err(sbi
, "Node segment (%u) and Data segment (%u) has the same segno: %u",
2897 le32_to_cpu(ckpt
->cur_node_segno
[i
]));
2903 sit_bitmap_size
= le32_to_cpu(ckpt
->sit_ver_bitmap_bytesize
);
2904 nat_bitmap_size
= le32_to_cpu(ckpt
->nat_ver_bitmap_bytesize
);
2906 if (sit_bitmap_size
!= ((sit_segs
/ 2) << log_blocks_per_seg
) / 8 ||
2907 nat_bitmap_size
!= ((nat_segs
/ 2) << log_blocks_per_seg
) / 8) {
2908 f2fs_err(sbi
, "Wrong bitmap size: sit: %u, nat:%u",
2909 sit_bitmap_size
, nat_bitmap_size
);
2913 cp_pack_start_sum
= __start_sum_addr(sbi
);
2914 cp_payload
= __cp_payload(sbi
);
2915 if (cp_pack_start_sum
< cp_payload
+ 1 ||
2916 cp_pack_start_sum
> blocks_per_seg
- 1 -
2918 f2fs_err(sbi
, "Wrong cp_pack_start_sum: %u",
2923 if (__is_set_ckpt_flags(ckpt
, CP_LARGE_NAT_BITMAP_FLAG
) &&
2924 le32_to_cpu(ckpt
->checksum_offset
) != CP_MIN_CHKSUM_OFFSET
) {
2925 f2fs_warn(sbi
, "using deprecated layout of large_nat_bitmap, "
2926 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
2927 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
2928 le32_to_cpu(ckpt
->checksum_offset
));
2932 if (unlikely(f2fs_cp_error(sbi
))) {
2933 f2fs_err(sbi
, "A bug case: need to run fsck");
2939 static void init_sb_info(struct f2fs_sb_info
*sbi
)
2941 struct f2fs_super_block
*raw_super
= sbi
->raw_super
;
2944 sbi
->log_sectors_per_block
=
2945 le32_to_cpu(raw_super
->log_sectors_per_block
);
2946 sbi
->log_blocksize
= le32_to_cpu(raw_super
->log_blocksize
);
2947 sbi
->blocksize
= 1 << sbi
->log_blocksize
;
2948 sbi
->log_blocks_per_seg
= le32_to_cpu(raw_super
->log_blocks_per_seg
);
2949 sbi
->blocks_per_seg
= 1 << sbi
->log_blocks_per_seg
;
2950 sbi
->segs_per_sec
= le32_to_cpu(raw_super
->segs_per_sec
);
2951 sbi
->secs_per_zone
= le32_to_cpu(raw_super
->secs_per_zone
);
2952 sbi
->total_sections
= le32_to_cpu(raw_super
->section_count
);
2953 sbi
->total_node_count
=
2954 (le32_to_cpu(raw_super
->segment_count_nat
) / 2)
2955 * sbi
->blocks_per_seg
* NAT_ENTRY_PER_BLOCK
;
2956 sbi
->root_ino_num
= le32_to_cpu(raw_super
->root_ino
);
2957 sbi
->node_ino_num
= le32_to_cpu(raw_super
->node_ino
);
2958 sbi
->meta_ino_num
= le32_to_cpu(raw_super
->meta_ino
);
2959 sbi
->cur_victim_sec
= NULL_SECNO
;
2960 sbi
->next_victim_seg
[BG_GC
] = NULL_SEGNO
;
2961 sbi
->next_victim_seg
[FG_GC
] = NULL_SEGNO
;
2962 sbi
->max_victim_search
= DEF_MAX_VICTIM_SEARCH
;
2963 sbi
->migration_granularity
= sbi
->segs_per_sec
;
2965 sbi
->dir_level
= DEF_DIR_LEVEL
;
2966 sbi
->interval_time
[CP_TIME
] = DEF_CP_INTERVAL
;
2967 sbi
->interval_time
[REQ_TIME
] = DEF_IDLE_INTERVAL
;
2968 sbi
->interval_time
[DISCARD_TIME
] = DEF_IDLE_INTERVAL
;
2969 sbi
->interval_time
[GC_TIME
] = DEF_IDLE_INTERVAL
;
2970 sbi
->interval_time
[DISABLE_TIME
] = DEF_DISABLE_INTERVAL
;
2971 sbi
->interval_time
[UMOUNT_DISCARD_TIMEOUT
] =
2972 DEF_UMOUNT_DISCARD_TIMEOUT
;
2973 clear_sbi_flag(sbi
, SBI_NEED_FSCK
);
2975 for (i
= 0; i
< NR_COUNT_TYPE
; i
++)
2976 atomic_set(&sbi
->nr_pages
[i
], 0);
2978 for (i
= 0; i
< META
; i
++)
2979 atomic_set(&sbi
->wb_sync_req
[i
], 0);
2981 INIT_LIST_HEAD(&sbi
->s_list
);
2982 mutex_init(&sbi
->umount_mutex
);
2983 init_rwsem(&sbi
->io_order_lock
);
2984 spin_lock_init(&sbi
->cp_lock
);
2986 sbi
->dirty_device
= 0;
2987 spin_lock_init(&sbi
->dev_lock
);
2989 init_rwsem(&sbi
->sb_lock
);
2990 init_rwsem(&sbi
->pin_sem
);
2993 static int init_percpu_info(struct f2fs_sb_info
*sbi
)
2997 err
= percpu_counter_init(&sbi
->alloc_valid_block_count
, 0, GFP_KERNEL
);
3001 err
= percpu_counter_init(&sbi
->total_valid_inode_count
, 0,
3004 percpu_counter_destroy(&sbi
->alloc_valid_block_count
);
3009 #ifdef CONFIG_BLK_DEV_ZONED
3010 static int f2fs_report_zone_cb(struct blk_zone
*zone
, unsigned int idx
,
3013 struct f2fs_dev_info
*dev
= data
;
3015 if (zone
->type
!= BLK_ZONE_TYPE_CONVENTIONAL
)
3016 set_bit(idx
, dev
->blkz_seq
);
3020 static int init_blkz_info(struct f2fs_sb_info
*sbi
, int devi
)
3022 struct block_device
*bdev
= FDEV(devi
).bdev
;
3023 sector_t nr_sectors
= bdev
->bd_part
->nr_sects
;
3026 if (!f2fs_sb_has_blkzoned(sbi
))
3029 if (sbi
->blocks_per_blkz
&& sbi
->blocks_per_blkz
!=
3030 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev
)))
3032 sbi
->blocks_per_blkz
= SECTOR_TO_BLOCK(bdev_zone_sectors(bdev
));
3033 if (sbi
->log_blocks_per_blkz
&& sbi
->log_blocks_per_blkz
!=
3034 __ilog2_u32(sbi
->blocks_per_blkz
))
3036 sbi
->log_blocks_per_blkz
= __ilog2_u32(sbi
->blocks_per_blkz
);
3037 FDEV(devi
).nr_blkz
= SECTOR_TO_BLOCK(nr_sectors
) >>
3038 sbi
->log_blocks_per_blkz
;
3039 if (nr_sectors
& (bdev_zone_sectors(bdev
) - 1))
3040 FDEV(devi
).nr_blkz
++;
3042 FDEV(devi
).blkz_seq
= f2fs_kvzalloc(sbi
,
3043 BITS_TO_LONGS(FDEV(devi
).nr_blkz
)
3044 * sizeof(unsigned long),
3046 if (!FDEV(devi
).blkz_seq
)
3049 /* Get block zones type */
3050 ret
= blkdev_report_zones(bdev
, 0, BLK_ALL_ZONES
, f2fs_report_zone_cb
,
3060 * Read f2fs raw super block.
3061 * Because we have two copies of super block, so read both of them
3062 * to get the first valid one. If any one of them is broken, we pass
3063 * them recovery flag back to the caller.
3065 static int read_raw_super_block(struct f2fs_sb_info
*sbi
,
3066 struct f2fs_super_block
**raw_super
,
3067 int *valid_super_block
, int *recovery
)
3069 struct super_block
*sb
= sbi
->sb
;
3071 struct buffer_head
*bh
;
3072 struct f2fs_super_block
*super
;
3075 super
= kzalloc(sizeof(struct f2fs_super_block
), GFP_KERNEL
);
3079 for (block
= 0; block
< 2; block
++) {
3080 bh
= sb_bread(sb
, block
);
3082 f2fs_err(sbi
, "Unable to read %dth superblock",
3089 /* sanity checking of raw super */
3090 err
= sanity_check_raw_super(sbi
, bh
);
3092 f2fs_err(sbi
, "Can't find valid F2FS filesystem in %dth superblock",
3100 memcpy(super
, bh
->b_data
+ F2FS_SUPER_OFFSET
,
3102 *valid_super_block
= block
;
3108 /* No valid superblock */
3117 int f2fs_commit_super(struct f2fs_sb_info
*sbi
, bool recover
)
3119 struct buffer_head
*bh
;
3123 if ((recover
&& f2fs_readonly(sbi
->sb
)) ||
3124 bdev_read_only(sbi
->sb
->s_bdev
)) {
3125 set_sbi_flag(sbi
, SBI_NEED_SB_WRITE
);
3129 /* we should update superblock crc here */
3130 if (!recover
&& f2fs_sb_has_sb_chksum(sbi
)) {
3131 crc
= f2fs_crc32(sbi
, F2FS_RAW_SUPER(sbi
),
3132 offsetof(struct f2fs_super_block
, crc
));
3133 F2FS_RAW_SUPER(sbi
)->crc
= cpu_to_le32(crc
);
3136 /* write back-up superblock first */
3137 bh
= sb_bread(sbi
->sb
, sbi
->valid_super_block
? 0 : 1);
3140 err
= __f2fs_commit_super(bh
, F2FS_RAW_SUPER(sbi
));
3143 /* if we are in recovery path, skip writing valid superblock */
3147 /* write current valid superblock */
3148 bh
= sb_bread(sbi
->sb
, sbi
->valid_super_block
);
3151 err
= __f2fs_commit_super(bh
, F2FS_RAW_SUPER(sbi
));
3156 static int f2fs_scan_devices(struct f2fs_sb_info
*sbi
)
3158 struct f2fs_super_block
*raw_super
= F2FS_RAW_SUPER(sbi
);
3159 unsigned int max_devices
= MAX_DEVICES
;
3162 /* Initialize single device information */
3163 if (!RDEV(0).path
[0]) {
3164 if (!bdev_is_zoned(sbi
->sb
->s_bdev
))
3170 * Initialize multiple devices information, or single
3171 * zoned block device information.
3173 sbi
->devs
= f2fs_kzalloc(sbi
,
3174 array_size(max_devices
,
3175 sizeof(struct f2fs_dev_info
)),
3180 for (i
= 0; i
< max_devices
; i
++) {
3182 if (i
> 0 && !RDEV(i
).path
[0])
3185 if (max_devices
== 1) {
3186 /* Single zoned block device mount */
3188 blkdev_get_by_dev(sbi
->sb
->s_bdev
->bd_dev
,
3189 sbi
->sb
->s_mode
, sbi
->sb
->s_type
);
3191 /* Multi-device mount */
3192 memcpy(FDEV(i
).path
, RDEV(i
).path
, MAX_PATH_LEN
);
3193 FDEV(i
).total_segments
=
3194 le32_to_cpu(RDEV(i
).total_segments
);
3196 FDEV(i
).start_blk
= 0;
3197 FDEV(i
).end_blk
= FDEV(i
).start_blk
+
3198 (FDEV(i
).total_segments
<<
3199 sbi
->log_blocks_per_seg
) - 1 +
3200 le32_to_cpu(raw_super
->segment0_blkaddr
);
3202 FDEV(i
).start_blk
= FDEV(i
- 1).end_blk
+ 1;
3203 FDEV(i
).end_blk
= FDEV(i
).start_blk
+
3204 (FDEV(i
).total_segments
<<
3205 sbi
->log_blocks_per_seg
) - 1;
3207 FDEV(i
).bdev
= blkdev_get_by_path(FDEV(i
).path
,
3208 sbi
->sb
->s_mode
, sbi
->sb
->s_type
);
3210 if (IS_ERR(FDEV(i
).bdev
))
3211 return PTR_ERR(FDEV(i
).bdev
);
3213 /* to release errored devices */
3214 sbi
->s_ndevs
= i
+ 1;
3216 #ifdef CONFIG_BLK_DEV_ZONED
3217 if (bdev_zoned_model(FDEV(i
).bdev
) == BLK_ZONED_HM
&&
3218 !f2fs_sb_has_blkzoned(sbi
)) {
3219 f2fs_err(sbi
, "Zoned block device feature not enabled\n");
3222 if (bdev_zoned_model(FDEV(i
).bdev
) != BLK_ZONED_NONE
) {
3223 if (init_blkz_info(sbi
, i
)) {
3224 f2fs_err(sbi
, "Failed to initialize F2FS blkzone information");
3227 if (max_devices
== 1)
3229 f2fs_info(sbi
, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3231 FDEV(i
).total_segments
,
3232 FDEV(i
).start_blk
, FDEV(i
).end_blk
,
3233 bdev_zoned_model(FDEV(i
).bdev
) == BLK_ZONED_HA
?
3234 "Host-aware" : "Host-managed");
3238 f2fs_info(sbi
, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3240 FDEV(i
).total_segments
,
3241 FDEV(i
).start_blk
, FDEV(i
).end_blk
);
3244 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi
));
3248 static int f2fs_setup_casefold(struct f2fs_sb_info
*sbi
)
3250 #ifdef CONFIG_UNICODE
3251 if (f2fs_sb_has_casefold(sbi
) && !sbi
->s_encoding
) {
3252 const struct f2fs_sb_encodings
*encoding_info
;
3253 struct unicode_map
*encoding
;
3254 __u16 encoding_flags
;
3256 if (f2fs_sb_has_encrypt(sbi
)) {
3258 "Can't mount with encoding and encryption");
3262 if (f2fs_sb_read_encoding(sbi
->raw_super
, &encoding_info
,
3265 "Encoding requested by superblock is unknown");
3269 encoding
= utf8_load(encoding_info
->version
);
3270 if (IS_ERR(encoding
)) {
3272 "can't mount with superblock charset: %s-%s "
3273 "not supported by the kernel. flags: 0x%x.",
3274 encoding_info
->name
, encoding_info
->version
,
3276 return PTR_ERR(encoding
);
3278 f2fs_info(sbi
, "Using encoding defined by superblock: "
3279 "%s-%s with flags 0x%hx", encoding_info
->name
,
3280 encoding_info
->version
?:"\b", encoding_flags
);
3282 sbi
->s_encoding
= encoding
;
3283 sbi
->s_encoding_flags
= encoding_flags
;
3284 sbi
->sb
->s_d_op
= &f2fs_dentry_ops
;
3287 if (f2fs_sb_has_casefold(sbi
)) {
3288 f2fs_err(sbi
, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3295 static void f2fs_tuning_parameters(struct f2fs_sb_info
*sbi
)
3297 struct f2fs_sm_info
*sm_i
= SM_I(sbi
);
3299 /* adjust parameters according to the volume size */
3300 if (sm_i
->main_segments
<= SMALL_VOLUME_SEGMENTS
) {
3301 F2FS_OPTION(sbi
).alloc_mode
= ALLOC_MODE_REUSE
;
3302 sm_i
->dcc_info
->discard_granularity
= 1;
3303 sm_i
->ipu_policy
= 1 << F2FS_IPU_FORCE
;
3306 sbi
->readdir_ra
= 1;
3309 static int f2fs_fill_super(struct super_block
*sb
, void *data
, int silent
)
3311 struct f2fs_sb_info
*sbi
;
3312 struct f2fs_super_block
*raw_super
;
3315 bool skip_recovery
= false, need_fsck
= false;
3316 char *options
= NULL
;
3317 int recovery
, i
, valid_super_block
;
3318 struct curseg_info
*seg_i
;
3324 valid_super_block
= -1;
3327 /* allocate memory for f2fs-specific super block info */
3328 sbi
= kzalloc(sizeof(struct f2fs_sb_info
), GFP_KERNEL
);
3334 /* Load the checksum driver */
3335 sbi
->s_chksum_driver
= crypto_alloc_shash("crc32", 0, 0);
3336 if (IS_ERR(sbi
->s_chksum_driver
)) {
3337 f2fs_err(sbi
, "Cannot load crc32 driver.");
3338 err
= PTR_ERR(sbi
->s_chksum_driver
);
3339 sbi
->s_chksum_driver
= NULL
;
3343 /* set a block size */
3344 if (unlikely(!sb_set_blocksize(sb
, F2FS_BLKSIZE
))) {
3345 f2fs_err(sbi
, "unable to set blocksize");
3349 err
= read_raw_super_block(sbi
, &raw_super
, &valid_super_block
,
3354 sb
->s_fs_info
= sbi
;
3355 sbi
->raw_super
= raw_super
;
3357 /* precompute checksum seed for metadata */
3358 if (f2fs_sb_has_inode_chksum(sbi
))
3359 sbi
->s_chksum_seed
= f2fs_chksum(sbi
, ~0, raw_super
->uuid
,
3360 sizeof(raw_super
->uuid
));
3363 * The BLKZONED feature indicates that the drive was formatted with
3364 * zone alignment optimization. This is optional for host-aware
3365 * devices, but mandatory for host-managed zoned block devices.
3367 #ifndef CONFIG_BLK_DEV_ZONED
3368 if (f2fs_sb_has_blkzoned(sbi
)) {
3369 f2fs_err(sbi
, "Zoned block device support is not enabled");
3374 default_options(sbi
);
3375 /* parse mount options */
3376 options
= kstrdup((const char *)data
, GFP_KERNEL
);
3377 if (data
&& !options
) {
3382 err
= parse_options(sb
, options
);
3386 sbi
->max_file_blocks
= max_file_blocks();
3387 sb
->s_maxbytes
= sbi
->max_file_blocks
<<
3388 le32_to_cpu(raw_super
->log_blocksize
);
3389 sb
->s_max_links
= F2FS_LINK_MAX
;
3391 err
= f2fs_setup_casefold(sbi
);
3396 sb
->dq_op
= &f2fs_quota_operations
;
3397 sb
->s_qcop
= &f2fs_quotactl_ops
;
3398 sb
->s_quota_types
= QTYPE_MASK_USR
| QTYPE_MASK_GRP
| QTYPE_MASK_PRJ
;
3400 if (f2fs_sb_has_quota_ino(sbi
)) {
3401 for (i
= 0; i
< MAXQUOTAS
; i
++) {
3402 if (f2fs_qf_ino(sbi
->sb
, i
))
3403 sbi
->nquota_files
++;
3408 sb
->s_op
= &f2fs_sops
;
3409 #ifdef CONFIG_FS_ENCRYPTION
3410 sb
->s_cop
= &f2fs_cryptops
;
3412 #ifdef CONFIG_FS_VERITY
3413 sb
->s_vop
= &f2fs_verityops
;
3415 sb
->s_xattr
= f2fs_xattr_handlers
;
3416 sb
->s_export_op
= &f2fs_export_ops
;
3417 sb
->s_magic
= F2FS_SUPER_MAGIC
;
3418 sb
->s_time_gran
= 1;
3419 sb
->s_flags
= (sb
->s_flags
& ~SB_POSIXACL
) |
3420 (test_opt(sbi
, POSIX_ACL
) ? SB_POSIXACL
: 0);
3421 memcpy(&sb
->s_uuid
, raw_super
->uuid
, sizeof(raw_super
->uuid
));
3422 sb
->s_iflags
|= SB_I_CGROUPWB
;
3424 /* init f2fs-specific super block info */
3425 sbi
->valid_super_block
= valid_super_block
;
3426 init_rwsem(&sbi
->gc_lock
);
3427 mutex_init(&sbi
->writepages
);
3428 mutex_init(&sbi
->cp_mutex
);
3429 mutex_init(&sbi
->resize_mutex
);
3430 init_rwsem(&sbi
->node_write
);
3431 init_rwsem(&sbi
->node_change
);
3433 /* disallow all the data/node/meta page writes */
3434 set_sbi_flag(sbi
, SBI_POR_DOING
);
3435 spin_lock_init(&sbi
->stat_lock
);
3437 /* init iostat info */
3438 spin_lock_init(&sbi
->iostat_lock
);
3439 sbi
->iostat_enable
= false;
3441 for (i
= 0; i
< NR_PAGE_TYPE
; i
++) {
3442 int n
= (i
== META
) ? 1: NR_TEMP_TYPE
;
3448 sizeof(struct f2fs_bio_info
)),
3450 if (!sbi
->write_io
[i
]) {
3455 for (j
= HOT
; j
< n
; j
++) {
3456 init_rwsem(&sbi
->write_io
[i
][j
].io_rwsem
);
3457 sbi
->write_io
[i
][j
].sbi
= sbi
;
3458 sbi
->write_io
[i
][j
].bio
= NULL
;
3459 spin_lock_init(&sbi
->write_io
[i
][j
].io_lock
);
3460 INIT_LIST_HEAD(&sbi
->write_io
[i
][j
].io_list
);
3461 INIT_LIST_HEAD(&sbi
->write_io
[i
][j
].bio_list
);
3462 init_rwsem(&sbi
->write_io
[i
][j
].bio_list_lock
);
3466 init_rwsem(&sbi
->cp_rwsem
);
3467 init_rwsem(&sbi
->quota_sem
);
3468 init_waitqueue_head(&sbi
->cp_wait
);
3471 err
= init_percpu_info(sbi
);
3475 if (F2FS_IO_ALIGNED(sbi
)) {
3476 sbi
->write_io_dummy
=
3477 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi
) - 1), 0);
3478 if (!sbi
->write_io_dummy
) {
3484 /* init per sbi slab cache */
3485 err
= f2fs_init_xattr_caches(sbi
);
3489 /* get an inode for meta space */
3490 sbi
->meta_inode
= f2fs_iget(sb
, F2FS_META_INO(sbi
));
3491 if (IS_ERR(sbi
->meta_inode
)) {
3492 f2fs_err(sbi
, "Failed to read F2FS meta data inode");
3493 err
= PTR_ERR(sbi
->meta_inode
);
3494 goto free_xattr_cache
;
3497 err
= f2fs_get_valid_checkpoint(sbi
);
3499 f2fs_err(sbi
, "Failed to get valid F2FS checkpoint");
3500 goto free_meta_inode
;
3503 if (__is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_QUOTA_NEED_FSCK_FLAG
))
3504 set_sbi_flag(sbi
, SBI_QUOTA_NEED_REPAIR
);
3505 if (__is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_DISABLED_QUICK_FLAG
)) {
3506 set_sbi_flag(sbi
, SBI_CP_DISABLED_QUICK
);
3507 sbi
->interval_time
[DISABLE_TIME
] = DEF_DISABLE_QUICK_INTERVAL
;
3510 if (__is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_FSCK_FLAG
))
3511 set_sbi_flag(sbi
, SBI_NEED_FSCK
);
3513 /* Initialize device list */
3514 err
= f2fs_scan_devices(sbi
);
3516 f2fs_err(sbi
, "Failed to find devices");
3520 err
= f2fs_init_post_read_wq(sbi
);
3522 f2fs_err(sbi
, "Failed to initialize post read workqueue");
3526 sbi
->total_valid_node_count
=
3527 le32_to_cpu(sbi
->ckpt
->valid_node_count
);
3528 percpu_counter_set(&sbi
->total_valid_inode_count
,
3529 le32_to_cpu(sbi
->ckpt
->valid_inode_count
));
3530 sbi
->user_block_count
= le64_to_cpu(sbi
->ckpt
->user_block_count
);
3531 sbi
->total_valid_block_count
=
3532 le64_to_cpu(sbi
->ckpt
->valid_block_count
);
3533 sbi
->last_valid_block_count
= sbi
->total_valid_block_count
;
3534 sbi
->reserved_blocks
= 0;
3535 sbi
->current_reserved_blocks
= 0;
3536 limit_reserve_root(sbi
);
3537 adjust_unusable_cap_perc(sbi
);
3539 for (i
= 0; i
< NR_INODE_TYPE
; i
++) {
3540 INIT_LIST_HEAD(&sbi
->inode_list
[i
]);
3541 spin_lock_init(&sbi
->inode_lock
[i
]);
3543 mutex_init(&sbi
->flush_lock
);
3545 f2fs_init_extent_cache_info(sbi
);
3547 f2fs_init_ino_entry_info(sbi
);
3549 f2fs_init_fsync_node_info(sbi
);
3551 /* setup f2fs internal modules */
3552 err
= f2fs_build_segment_manager(sbi
);
3554 f2fs_err(sbi
, "Failed to initialize F2FS segment manager (%d)",
3558 err
= f2fs_build_node_manager(sbi
);
3560 f2fs_err(sbi
, "Failed to initialize F2FS node manager (%d)",
3565 /* For write statistics */
3566 if (sb
->s_bdev
->bd_part
)
3567 sbi
->sectors_written_start
=
3568 (u64
)part_stat_read(sb
->s_bdev
->bd_part
,
3569 sectors
[STAT_WRITE
]);
3571 /* Read accumulated write IO statistics if exists */
3572 seg_i
= CURSEG_I(sbi
, CURSEG_HOT_NODE
);
3573 if (__exist_node_summaries(sbi
))
3574 sbi
->kbytes_written
=
3575 le64_to_cpu(seg_i
->journal
->info
.kbytes_written
);
3577 f2fs_build_gc_manager(sbi
);
3579 err
= f2fs_build_stats(sbi
);
3583 /* get an inode for node space */
3584 sbi
->node_inode
= f2fs_iget(sb
, F2FS_NODE_INO(sbi
));
3585 if (IS_ERR(sbi
->node_inode
)) {
3586 f2fs_err(sbi
, "Failed to read node inode");
3587 err
= PTR_ERR(sbi
->node_inode
);
3591 /* read root inode and dentry */
3592 root
= f2fs_iget(sb
, F2FS_ROOT_INO(sbi
));
3594 f2fs_err(sbi
, "Failed to read root inode");
3595 err
= PTR_ERR(root
);
3596 goto free_node_inode
;
3598 if (!S_ISDIR(root
->i_mode
) || !root
->i_blocks
||
3599 !root
->i_size
|| !root
->i_nlink
) {
3602 goto free_node_inode
;
3605 sb
->s_root
= d_make_root(root
); /* allocate root dentry */
3608 goto free_node_inode
;
3611 err
= f2fs_register_sysfs(sbi
);
3613 goto free_root_inode
;
3616 /* Enable quota usage during mount */
3617 if (f2fs_sb_has_quota_ino(sbi
) && !f2fs_readonly(sb
)) {
3618 err
= f2fs_enable_quotas(sb
);
3620 f2fs_err(sbi
, "Cannot turn on quotas: error %d", err
);
3623 /* if there are any orphan inodes, free them */
3624 err
= f2fs_recover_orphan_inodes(sbi
);
3628 if (unlikely(is_set_ckpt_flags(sbi
, CP_DISABLED_FLAG
)))
3629 goto reset_checkpoint
;
3631 /* recover fsynced data */
3632 if (!test_opt(sbi
, DISABLE_ROLL_FORWARD
) &&
3633 !test_opt(sbi
, NORECOVERY
)) {
3635 * mount should be failed, when device has readonly mode, and
3636 * previous checkpoint was not done by clean system shutdown.
3638 if (f2fs_hw_is_readonly(sbi
)) {
3639 if (!is_set_ckpt_flags(sbi
, CP_UMOUNT_FLAG
)) {
3641 f2fs_err(sbi
, "Need to recover fsync data, but write access unavailable");
3644 f2fs_info(sbi
, "write access unavailable, skipping recovery");
3645 goto reset_checkpoint
;
3649 set_sbi_flag(sbi
, SBI_NEED_FSCK
);
3652 goto reset_checkpoint
;
3654 err
= f2fs_recover_fsync_data(sbi
, false);
3657 skip_recovery
= true;
3659 f2fs_err(sbi
, "Cannot recover all fsync data errno=%d",
3664 err
= f2fs_recover_fsync_data(sbi
, true);
3666 if (!f2fs_readonly(sb
) && err
> 0) {
3668 f2fs_err(sbi
, "Need to recover fsync data");
3674 * If the f2fs is not readonly and fsync data recovery succeeds,
3675 * check zoned block devices' write pointer consistency.
3677 if (!err
&& !f2fs_readonly(sb
) && f2fs_sb_has_blkzoned(sbi
)) {
3678 err
= f2fs_check_write_pointer(sbi
);
3684 /* f2fs_recover_fsync_data() cleared this already */
3685 clear_sbi_flag(sbi
, SBI_POR_DOING
);
3687 if (test_opt(sbi
, DISABLE_CHECKPOINT
)) {
3688 err
= f2fs_disable_checkpoint(sbi
);
3690 goto sync_free_meta
;
3691 } else if (is_set_ckpt_flags(sbi
, CP_DISABLED_FLAG
)) {
3692 f2fs_enable_checkpoint(sbi
);
3696 * If filesystem is not mounted as read-only then
3697 * do start the gc_thread.
3699 if (F2FS_OPTION(sbi
).bggc_mode
!= BGGC_MODE_OFF
&& !f2fs_readonly(sb
)) {
3700 /* After POR, we can run background GC thread.*/
3701 err
= f2fs_start_gc_thread(sbi
);
3703 goto sync_free_meta
;
3707 /* recover broken superblock */
3709 err
= f2fs_commit_super(sbi
, true);
3710 f2fs_info(sbi
, "Try to recover %dth superblock, ret: %d",
3711 sbi
->valid_super_block
? 1 : 2, err
);
3714 f2fs_join_shrinker(sbi
);
3716 f2fs_tuning_parameters(sbi
);
3718 f2fs_notice(sbi
, "Mounted with checkpoint version = %llx",
3719 cur_cp_version(F2FS_CKPT(sbi
)));
3720 f2fs_update_time(sbi
, CP_TIME
);
3721 f2fs_update_time(sbi
, REQ_TIME
);
3722 clear_sbi_flag(sbi
, SBI_CP_DISABLED_QUICK
);
3726 /* safe to flush all the data */
3727 sync_filesystem(sbi
->sb
);
3732 f2fs_truncate_quota_inode_pages(sb
);
3733 if (f2fs_sb_has_quota_ino(sbi
) && !f2fs_readonly(sb
))
3734 f2fs_quota_off_umount(sbi
->sb
);
3737 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
3738 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
3739 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3740 * falls into an infinite loop in f2fs_sync_meta_pages().
3742 truncate_inode_pages_final(META_MAPPING(sbi
));
3743 /* evict some inodes being cached by GC */
3745 f2fs_unregister_sysfs(sbi
);
3750 f2fs_release_ino_entry(sbi
, true);
3751 truncate_inode_pages_final(NODE_MAPPING(sbi
));
3752 iput(sbi
->node_inode
);
3753 sbi
->node_inode
= NULL
;
3755 f2fs_destroy_stats(sbi
);
3757 f2fs_destroy_node_manager(sbi
);
3759 f2fs_destroy_segment_manager(sbi
);
3760 f2fs_destroy_post_read_wq(sbi
);
3762 destroy_device_list(sbi
);
3765 make_bad_inode(sbi
->meta_inode
);
3766 iput(sbi
->meta_inode
);
3767 sbi
->meta_inode
= NULL
;
3769 f2fs_destroy_xattr_caches(sbi
);
3771 mempool_destroy(sbi
->write_io_dummy
);
3773 destroy_percpu_info(sbi
);
3775 for (i
= 0; i
< NR_PAGE_TYPE
; i
++)
3776 kvfree(sbi
->write_io
[i
]);
3778 #ifdef CONFIG_UNICODE
3779 utf8_unload(sbi
->s_encoding
);
3783 for (i
= 0; i
< MAXQUOTAS
; i
++)
3784 kvfree(F2FS_OPTION(sbi
).s_qf_names
[i
]);
3790 if (sbi
->s_chksum_driver
)
3791 crypto_free_shash(sbi
->s_chksum_driver
);
3794 /* give only one another chance */
3795 if (retry_cnt
> 0 && skip_recovery
) {
3797 shrink_dcache_sb(sb
);
3803 static struct dentry
*f2fs_mount(struct file_system_type
*fs_type
, int flags
,
3804 const char *dev_name
, void *data
)
3806 return mount_bdev(fs_type
, flags
, dev_name
, data
, f2fs_fill_super
);
3809 static void kill_f2fs_super(struct super_block
*sb
)
3812 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
3814 set_sbi_flag(sbi
, SBI_IS_CLOSE
);
3815 f2fs_stop_gc_thread(sbi
);
3816 f2fs_stop_discard_thread(sbi
);
3818 if (is_sbi_flag_set(sbi
, SBI_IS_DIRTY
) ||
3819 !is_set_ckpt_flags(sbi
, CP_UMOUNT_FLAG
)) {
3820 struct cp_control cpc
= {
3821 .reason
= CP_UMOUNT
,
3823 f2fs_write_checkpoint(sbi
, &cpc
);
3826 if (is_sbi_flag_set(sbi
, SBI_IS_RECOVERED
) && f2fs_readonly(sb
))
3827 sb
->s_flags
&= ~SB_RDONLY
;
3829 kill_block_super(sb
);
3832 static struct file_system_type f2fs_fs_type
= {
3833 .owner
= THIS_MODULE
,
3835 .mount
= f2fs_mount
,
3836 .kill_sb
= kill_f2fs_super
,
3837 .fs_flags
= FS_REQUIRES_DEV
,
3839 MODULE_ALIAS_FS("f2fs");
3841 static int __init
init_inodecache(void)
3843 f2fs_inode_cachep
= kmem_cache_create("f2fs_inode_cache",
3844 sizeof(struct f2fs_inode_info
), 0,
3845 SLAB_RECLAIM_ACCOUNT
|SLAB_ACCOUNT
, NULL
);
3846 if (!f2fs_inode_cachep
)
3851 static void destroy_inodecache(void)
3854 * Make sure all delayed rcu free inodes are flushed before we
3858 kmem_cache_destroy(f2fs_inode_cachep
);
3861 static int __init
init_f2fs_fs(void)
3865 if (PAGE_SIZE
!= F2FS_BLKSIZE
) {
3866 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3867 PAGE_SIZE
, F2FS_BLKSIZE
);
3871 f2fs_build_trace_ios();
3873 err
= init_inodecache();
3876 err
= f2fs_create_node_manager_caches();
3878 goto free_inodecache
;
3879 err
= f2fs_create_segment_manager_caches();
3881 goto free_node_manager_caches
;
3882 err
= f2fs_create_checkpoint_caches();
3884 goto free_segment_manager_caches
;
3885 err
= f2fs_create_extent_cache();
3887 goto free_checkpoint_caches
;
3888 err
= f2fs_init_sysfs();
3890 goto free_extent_cache
;
3891 err
= register_shrinker(&f2fs_shrinker_info
);
3894 err
= register_filesystem(&f2fs_fs_type
);
3897 f2fs_create_root_stats();
3898 err
= f2fs_init_post_read_processing();
3900 goto free_root_stats
;
3901 err
= f2fs_init_bio_entry_cache();
3903 goto free_post_read
;
3904 err
= f2fs_init_bioset();
3906 goto free_bio_enrty_cache
;
3908 free_bio_enrty_cache
:
3909 f2fs_destroy_bio_entry_cache();
3911 f2fs_destroy_post_read_processing();
3913 f2fs_destroy_root_stats();
3914 unregister_filesystem(&f2fs_fs_type
);
3916 unregister_shrinker(&f2fs_shrinker_info
);
3920 f2fs_destroy_extent_cache();
3921 free_checkpoint_caches
:
3922 f2fs_destroy_checkpoint_caches();
3923 free_segment_manager_caches
:
3924 f2fs_destroy_segment_manager_caches();
3925 free_node_manager_caches
:
3926 f2fs_destroy_node_manager_caches();
3928 destroy_inodecache();
3933 static void __exit
exit_f2fs_fs(void)
3935 f2fs_destroy_bioset();
3936 f2fs_destroy_bio_entry_cache();
3937 f2fs_destroy_post_read_processing();
3938 f2fs_destroy_root_stats();
3939 unregister_filesystem(&f2fs_fs_type
);
3940 unregister_shrinker(&f2fs_shrinker_info
);
3942 f2fs_destroy_extent_cache();
3943 f2fs_destroy_checkpoint_caches();
3944 f2fs_destroy_segment_manager_caches();
3945 f2fs_destroy_node_manager_caches();
3946 destroy_inodecache();
3947 f2fs_destroy_trace_ios();
3950 module_init(init_f2fs_fs
)
3951 module_exit(exit_f2fs_fs
)
3953 MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3954 MODULE_DESCRIPTION("Flash Friendly File System");
3955 MODULE_LICENSE("GPL");