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f2fs: allocate trace path buffer from names_cache
[linux-block.git] / fs / f2fs / super.c
CommitLineData
7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
aff063e2
JK		 3 * fs/f2fs/super.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
aff063e2
JK		 7 */
8#include <linux/module.h>
9#include <linux/init.h>
10#include <linux/fs.h>
c5bca38d 11#include <linux/fs_context.h>
4034247a 12#include <linux/sched/mm.h>
aff063e2 13#include <linux/statfs.h>
aff063e2 14#include <linux/buffer_head.h>
aff063e2
JK		 15#include <linux/kthread.h>
16#include <linux/parser.h>
17#include <linux/mount.h>
18#include <linux/seq_file.h>
5e176d54 19#include <linux/proc_fs.h>
aff063e2
JK		 20#include <linux/random.h>
21#include <linux/exportfs.h>
d3ee456d 22#include <linux/blkdev.h>
0abd675e 23#include <linux/quotaops.h>
aff063e2 24#include <linux/f2fs_fs.h>
b59d0bae 25#include <linux/sysfs.h>
4b2414d0 26#include <linux/quota.h>
5aba5430 27#include <linux/unicode.h>
c6a564ff 28#include <linux/part_stat.h>
3fde13f8
CY		 29#include <linux/zstd.h>
30#include <linux/lz4.h>
aff063e2
JK		 31
32#include "f2fs.h"
33#include "node.h"
5ec4e49f 34#include "segment.h"
aff063e2 35#include "xattr.h"
b59d0bae 36#include "gc.h"
52118743 37#include "iostat.h"
aff063e2 38
a2a4a7e4
NJ		 39#define CREATE_TRACE_POINTS
40#include <trace/events/f2fs.h>
41
aff063e2
JK		 42static struct kmem_cache *f2fs_inode_cachep;
43
73faec4d 44#ifdef CONFIG_F2FS_FAULT_INJECTION
2c63fead 45
19880e6e 46const char *f2fs_fault_name[FAULT_MAX] = {
2c63fead 47 [FAULT_KMALLOC] = "kmalloc",
628b3d14 48 [FAULT_KVMALLOC] = "kvmalloc",
c41f3cc3 49 [FAULT_PAGE_ALLOC] = "page alloc",
01eccef7 50 [FAULT_PAGE_GET] = "page get",
cb78942b
JK		 51 [FAULT_ALLOC_NID] = "alloc nid",
52 [FAULT_ORPHAN] = "orphan",
53 [FAULT_BLOCK] = "no more block",
54 [FAULT_DIR_DEPTH] = "too big dir depth",
53aa6bbf 55 [FAULT_EVICT_INODE] = "evict_inode fail",
14b44d23 56 [FAULT_TRUNCATE] = "truncate fail",
6f5c2ed0 57 [FAULT_READ_IO] = "read IO error",
0f348028 58 [FAULT_CHECKPOINT] = "checkpoint error",
b83dcfe6 59 [FAULT_DISCARD] = "discard error",
6f5c2ed0 60 [FAULT_WRITE_IO] = "write IO error",
32410577 61 [FAULT_SLAB_ALLOC] = "slab alloc",
10a26878 62 [FAULT_DQUOT_INIT] = "dquot initialize",
3e020389 63 [FAULT_LOCK_OP] = "lock_op",
18792e64 64 [FAULT_BLKADDR] = "invalid blkaddr",
2c63fead 65};
08796897 66
d494500a
CY		 67void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
68 unsigned int type)
08796897 69{
63189b78 70 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1ecc0c5c 71
08796897 72 if (rate) {
1ecc0c5c
CY		 73 atomic_set(&ffi->inject_ops, 0);
74 ffi->inject_rate = rate;
08796897 75 }
d494500a
CY		 76
77 if (type)
78 ffi->inject_type = type;
79
80 if (!rate && !type)
81 memset(ffi, 0, sizeof(struct f2fs_fault_info));
08796897 82}
73faec4d
JK		 83#endif
84
2658e50d
JK		 85/* f2fs-wide shrinker description */
86static struct shrinker f2fs_shrinker_info = {
87 .scan_objects = f2fs_shrink_scan,
88 .count_objects = f2fs_shrink_count,
89 .seeks = DEFAULT_SEEKS,
90};
91
aff063e2 92enum {
696c018c 93 Opt_gc_background,
aff063e2 94 Opt_disable_roll_forward,
2d834bf9 95 Opt_norecovery,
aff063e2 96 Opt_discard,
64058be9 97 Opt_nodiscard,
aff063e2 98 Opt_noheap,
7a20b8a6 99 Opt_heap,
4058c511 100 Opt_user_xattr,
aff063e2 101 Opt_nouser_xattr,
4058c511 102 Opt_acl,
aff063e2
JK		 103 Opt_noacl,
104 Opt_active_logs,
105 Opt_disable_ext_identify,
444c580f 106 Opt_inline_xattr,
23cf7212 107 Opt_noinline_xattr,
6afc662e 108 Opt_inline_xattr_size,
8274de77 109 Opt_inline_data,
5efd3c6f 110 Opt_inline_dentry,
97c1794a 111 Opt_noinline_dentry,
6b4afdd7 112 Opt_flush_merge,
69e9e427 113 Opt_noflush_merge,
6047de54 114 Opt_barrier,
0f7b2abd 115 Opt_nobarrier,
d5053a34 116 Opt_fastboot,
89672159 117 Opt_extent_cache,
7daaea25 118 Opt_noextent_cache,
75342797 119 Opt_noinline_data,
343f40f0 120 Opt_data_flush,
7e65be49 121 Opt_reserve_root,
7c2e5963
JK		 122 Opt_resgid,
123 Opt_resuid,
36abef4e 124 Opt_mode,
ec91538d 125 Opt_io_size_bits,
73faec4d 126 Opt_fault_injection,
d494500a 127 Opt_fault_type,
6d94c74a
JK		 128 Opt_lazytime,
129 Opt_nolazytime,
4b2414d0
CY		 130 Opt_quota,
131 Opt_noquota,
0abd675e
CY		 132 Opt_usrquota,
133 Opt_grpquota,
5c57132e 134 Opt_prjquota,
4b2414d0
CY		 135 Opt_usrjquota,
136 Opt_grpjquota,
137 Opt_prjjquota,
138 Opt_offusrjquota,
139 Opt_offgrpjquota,
140 Opt_offprjjquota,
141 Opt_jqfmt_vfsold,
142 Opt_jqfmt_vfsv0,
143 Opt_jqfmt_vfsv1,
07939627 144 Opt_alloc,
93cf93f1 145 Opt_fsync,
ff62af20 146 Opt_test_dummy_encryption,
27aacd28 147 Opt_inlinecrypt,
4d3aed70
DR		 148 Opt_checkpoint_disable,
149 Opt_checkpoint_disable_cap,
150 Opt_checkpoint_disable_cap_perc,
151 Opt_checkpoint_enable,
261eeb9c
DJ		 152 Opt_checkpoint_merge,
153 Opt_nocheckpoint_merge,
4c8ff709
CY		 154 Opt_compress_algorithm,
155 Opt_compress_log_size,
156 Opt_compress_extension,
151b1982 157 Opt_nocompress_extension,
b28f047b 158 Opt_compress_chksum,
602a16d5 159 Opt_compress_mode,
6ce19aff 160 Opt_compress_cache,
093749e2 161 Opt_atgc,
5911d2d1
CY		 162 Opt_gc_merge,
163 Opt_nogc_merge,
4f993264 164 Opt_discard_unit,
7a8fc586 165 Opt_memory_mode,
71644dff 166 Opt_age_extent_cache,
aff063e2
JK		 167 Opt_err,
168};
169
170static match_table_t f2fs_tokens = {
696c018c 171 {Opt_gc_background, "background_gc=%s"},
aff063e2 172 {Opt_disable_roll_forward, "disable_roll_forward"},
2d834bf9 173 {Opt_norecovery, "norecovery"},
aff063e2 174 {Opt_discard, "discard"},
64058be9 175 {Opt_nodiscard, "nodiscard"},
aff063e2 176 {Opt_noheap, "no_heap"},
7a20b8a6 177 {Opt_heap, "heap"},
4058c511 178 {Opt_user_xattr, "user_xattr"},
aff063e2 179 {Opt_nouser_xattr, "nouser_xattr"},
4058c511 180 {Opt_acl, "acl"},
aff063e2
JK		 181 {Opt_noacl, "noacl"},
182 {Opt_active_logs, "active_logs=%u"},
183 {Opt_disable_ext_identify, "disable_ext_identify"},
444c580f 184 {Opt_inline_xattr, "inline_xattr"},
23cf7212 185 {Opt_noinline_xattr, "noinline_xattr"},
6afc662e 186 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
8274de77 187 {Opt_inline_data, "inline_data"},
5efd3c6f 188 {Opt_inline_dentry, "inline_dentry"},
97c1794a 189 {Opt_noinline_dentry, "noinline_dentry"},
6b4afdd7 190 {Opt_flush_merge, "flush_merge"},
69e9e427 191 {Opt_noflush_merge, "noflush_merge"},
6047de54 192 {Opt_barrier, "barrier"},
0f7b2abd 193 {Opt_nobarrier, "nobarrier"},
d5053a34 194 {Opt_fastboot, "fastboot"},
89672159 195 {Opt_extent_cache, "extent_cache"},
7daaea25 196 {Opt_noextent_cache, "noextent_cache"},
75342797 197 {Opt_noinline_data, "noinline_data"},
343f40f0 198 {Opt_data_flush, "data_flush"},
7e65be49 199 {Opt_reserve_root, "reserve_root=%u"},
7c2e5963
JK		 200 {Opt_resgid, "resgid=%u"},
201 {Opt_resuid, "resuid=%u"},
36abef4e 202 {Opt_mode, "mode=%s"},
ec91538d 203 {Opt_io_size_bits, "io_bits=%u"},
73faec4d 204 {Opt_fault_injection, "fault_injection=%u"},
d494500a 205 {Opt_fault_type, "fault_type=%u"},
6d94c74a
JK		 206 {Opt_lazytime, "lazytime"},
207 {Opt_nolazytime, "nolazytime"},
4b2414d0
CY		 208 {Opt_quota, "quota"},
209 {Opt_noquota, "noquota"},
0abd675e
CY		 210 {Opt_usrquota, "usrquota"},
211 {Opt_grpquota, "grpquota"},
5c57132e 212 {Opt_prjquota, "prjquota"},
4b2414d0
CY		 213 {Opt_usrjquota, "usrjquota=%s"},
214 {Opt_grpjquota, "grpjquota=%s"},
215 {Opt_prjjquota, "prjjquota=%s"},
216 {Opt_offusrjquota, "usrjquota="},
217 {Opt_offgrpjquota, "grpjquota="},
218 {Opt_offprjjquota, "prjjquota="},
219 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
220 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
221 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
07939627 222 {Opt_alloc, "alloc_mode=%s"},
93cf93f1 223 {Opt_fsync, "fsync_mode=%s"},
ed318a6c 224 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
ff62af20 225 {Opt_test_dummy_encryption, "test_dummy_encryption"},
27aacd28 226 {Opt_inlinecrypt, "inlinecrypt"},
4d3aed70
DR		 227 {Opt_checkpoint_disable, "checkpoint=disable"},
228 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
229 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
230 {Opt_checkpoint_enable, "checkpoint=enable"},
261eeb9c
DJ		 231 {Opt_checkpoint_merge, "checkpoint_merge"},
232 {Opt_nocheckpoint_merge, "nocheckpoint_merge"},
4c8ff709
CY		 233 {Opt_compress_algorithm, "compress_algorithm=%s"},
234 {Opt_compress_log_size, "compress_log_size=%u"},
235 {Opt_compress_extension, "compress_extension=%s"},
151b1982 236 {Opt_nocompress_extension, "nocompress_extension=%s"},
b28f047b 237 {Opt_compress_chksum, "compress_chksum"},
602a16d5 238 {Opt_compress_mode, "compress_mode=%s"},
6ce19aff 239 {Opt_compress_cache, "compress_cache"},
093749e2 240 {Opt_atgc, "atgc"},
5911d2d1
CY		 241 {Opt_gc_merge, "gc_merge"},
242 {Opt_nogc_merge, "nogc_merge"},
4f993264 243 {Opt_discard_unit, "discard_unit=%s"},
7a8fc586 244 {Opt_memory_mode, "memory=%s"},
71644dff 245 {Opt_age_extent_cache, "age_extent_cache"},
aff063e2
JK		 246 {Opt_err, NULL},
247};
248
dcbb4c10 249void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
a07ef784
NJ		 250{
251 struct va_format vaf;
252 va_list args;
dcbb4c10 253 int level;
a07ef784
NJ		 254
255 va_start(args, fmt);
dcbb4c10
JP		 256
257 level = printk_get_level(fmt);
258 vaf.fmt = printk_skip_level(fmt);
a07ef784 259 vaf.va = &args;
dcbb4c10
JP		 260 printk("%c%cF2FS-fs (%s): %pV\n",
261 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
262
a07ef784
NJ		 263 va_end(args);
264}
265
5298d4bf 266#if IS_ENABLED(CONFIG_UNICODE)
5aba5430
DR		 267static const struct f2fs_sb_encodings {
268 __u16 magic;
269 char *name;
49bd03cc 270 unsigned int version;
5aba5430 271} f2fs_sb_encoding_map[] = {
49bd03cc 272 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)},
5aba5430
DR		 273};
274
86e80575
CH		 275static const struct f2fs_sb_encodings *
276f2fs_sb_read_encoding(const struct f2fs_super_block *sb)
5aba5430
DR		 277{
278 __u16 magic = le16_to_cpu(sb->s_encoding);
279 int i;
280
281 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
282 if (magic == f2fs_sb_encoding_map[i].magic)
86e80575 283 return &f2fs_sb_encoding_map[i];
5aba5430 284
86e80575 285 return NULL;
5aba5430 286}
4d9a2bb1
CY		 287
288struct kmem_cache *f2fs_cf_name_slab;
289static int __init f2fs_create_casefold_cache(void)
290{
291 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name",
292 F2FS_NAME_LEN);
870af777 293 return f2fs_cf_name_slab ? 0 : -ENOMEM;
4d9a2bb1
CY		 294}
295
296static void f2fs_destroy_casefold_cache(void)
297{
298 kmem_cache_destroy(f2fs_cf_name_slab);
299}
300#else
301static int __init f2fs_create_casefold_cache(void) { return 0; }
302static void f2fs_destroy_casefold_cache(void) { }
5aba5430
DR		 303#endif
304
7e65be49
JK		 305static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
306{
da35fe96 307 block_t limit = min((sbi->user_block_count >> 3),
9a9aecaa 308 sbi->user_block_count - sbi->reserved_blocks);
7e65be49 309
da35fe96 310 /* limit is 12.5% */
63189b78
CY		 311 if (test_opt(sbi, RESERVE_ROOT) &&
312 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
313 F2FS_OPTION(sbi).root_reserved_blocks = limit;
dcbb4c10
JP		 314 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
315 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 316 }
7c2e5963 317 if (!test_opt(sbi, RESERVE_ROOT) &&
63189b78 318 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
7c2e5963 319 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
63189b78 320 !gid_eq(F2FS_OPTION(sbi).s_resgid,
7c2e5963 321 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
dcbb4c10
JP		 322 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
323 from_kuid_munged(&init_user_ns,
324 F2FS_OPTION(sbi).s_resuid),
325 from_kgid_munged(&init_user_ns,
326 F2FS_OPTION(sbi).s_resgid));
7e65be49
JK		 327}
328
300a8429
CY		 329static inline int adjust_reserved_segment(struct f2fs_sb_info *sbi)
330{
331 unsigned int sec_blks = sbi->blocks_per_seg * sbi->segs_per_sec;
332 unsigned int avg_vblocks;
333 unsigned int wanted_reserved_segments;
334 block_t avail_user_block_count;
335
336 if (!F2FS_IO_ALIGNED(sbi))
337 return 0;
338
339 /* average valid block count in section in worst case */
340 avg_vblocks = sec_blks / F2FS_IO_SIZE(sbi);
341
342 /*
343 * we need enough free space when migrating one section in worst case
344 */
345 wanted_reserved_segments = (F2FS_IO_SIZE(sbi) / avg_vblocks) *
346 reserved_segments(sbi);
347 wanted_reserved_segments -= reserved_segments(sbi);
348
349 avail_user_block_count = sbi->user_block_count -
350 sbi->current_reserved_blocks -
351 F2FS_OPTION(sbi).root_reserved_blocks;
352
353 if (wanted_reserved_segments * sbi->blocks_per_seg >
354 avail_user_block_count) {
355 f2fs_err(sbi, "IO align feature can't grab additional reserved segment: %u, available segments: %u",
356 wanted_reserved_segments,
357 avail_user_block_count >> sbi->log_blocks_per_seg);
358 return -ENOSPC;
359 }
360
361 SM_I(sbi)->additional_reserved_segments = wanted_reserved_segments;
362
363 f2fs_info(sbi, "IO align feature needs additional reserved segment: %u",
364 wanted_reserved_segments);
365
366 return 0;
367}
368
1ae18f71
JK		 369static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
370{
371 if (!F2FS_OPTION(sbi).unusable_cap_perc)
372 return;
373
374 if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
375 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
376 else
377 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
378 F2FS_OPTION(sbi).unusable_cap_perc;
379
380 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
381 F2FS_OPTION(sbi).unusable_cap,
382 F2FS_OPTION(sbi).unusable_cap_perc);
383}
384
aff063e2
JK		 385static void init_once(void *foo)
386{
387 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
388
aff063e2
JK		 389 inode_init_once(&fi->vfs_inode);
390}
391
4b2414d0
CY		 392#ifdef CONFIG_QUOTA
393static const char * const quotatypes[] = INITQFNAMES;
394#define QTYPE2NAME(t) (quotatypes[t])
395static int f2fs_set_qf_name(struct super_block *sb, int qtype,
396 substring_t *args)
397{
398 struct f2fs_sb_info *sbi = F2FS_SB(sb);
399 char *qname;
400 int ret = -EINVAL;
401
63189b78 402 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 403 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 404 return -EINVAL;
405 }
7beb01f7 406 if (f2fs_sb_has_quota_ino(sbi)) {
dcbb4c10 407 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
ea676733
JK		 408 return 0;
409 }
410
4b2414d0
CY		 411 qname = match_strdup(args);
412 if (!qname) {
dcbb4c10 413 f2fs_err(sbi, "Not enough memory for storing quotafile name");
f365c6cc 414 return -ENOMEM;
4b2414d0 415 }
63189b78
CY		 416 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
417 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
4b2414d0
CY		 418 ret = 0;
419 else
dcbb4c10 420 f2fs_err(sbi, "%s quota file already specified",
4b2414d0
CY		 421 QTYPE2NAME(qtype));
422 goto errout;
423 }
424 if (strchr(qname, '/')) {
dcbb4c10 425 f2fs_err(sbi, "quotafile must be on filesystem root");
4b2414d0
CY		 426 goto errout;
427 }
63189b78 428 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
4b2414d0
CY		 429 set_opt(sbi, QUOTA);
430 return 0;
431errout:
ba87a45c 432 kfree(qname);
4b2414d0
CY		 433 return ret;
434}
435
436static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
437{
438 struct f2fs_sb_info *sbi = F2FS_SB(sb);
439
63189b78 440 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 441 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 442 return -EINVAL;
443 }
ba87a45c 444 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
63189b78 445 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
4b2414d0
CY		 446 return 0;
447}
448
449static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
450{
451 /*
452 * We do the test below only for project quotas. 'usrquota' and
453 * 'grpquota' mount options are allowed even without quota feature
454 * to support legacy quotas in quota files.
455 */
7beb01f7 456 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
dcbb4c10 457 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
4b2414d0
CY		 458 return -1;
459 }
63189b78
CY		 460 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
461 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
462 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
463 if (test_opt(sbi, USRQUOTA) &&
464 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
4b2414d0
CY		 465 clear_opt(sbi, USRQUOTA);
466
63189b78
CY		 467 if (test_opt(sbi, GRPQUOTA) &&
468 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
4b2414d0
CY		 469 clear_opt(sbi, GRPQUOTA);
470
63189b78
CY		 471 if (test_opt(sbi, PRJQUOTA) &&
472 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4b2414d0
CY		 473 clear_opt(sbi, PRJQUOTA);
474
475 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
476 test_opt(sbi, PRJQUOTA)) {
dcbb4c10 477 f2fs_err(sbi, "old and new quota format mixing");
4b2414d0
CY		 478 return -1;
479 }
480
63189b78 481 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 482 f2fs_err(sbi, "journaled quota format not specified");
4b2414d0
CY		 483 return -1;
484 }
485 }
ea676733 486
7beb01f7 487 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 488 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
63189b78 489 F2FS_OPTION(sbi).s_jquota_fmt = 0;
ea676733 490 }
4b2414d0
CY		 491 return 0;
492}
493#endif
494
ed318a6c
EB		 495static int f2fs_set_test_dummy_encryption(struct super_block *sb,
496 const char *opt,
497 const substring_t *arg,
498 bool is_remount)
499{
500 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c5bca38d
EB		 501 struct fs_parameter param = {
502 .type = fs_value_is_string,
503 .string = arg->from ? arg->from : "",
504 };
505 struct fscrypt_dummy_policy *policy =
506 &F2FS_OPTION(sbi).dummy_enc_policy;
ed318a6c
EB		 507 int err;
508
c5bca38d
EB		 509 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) {
510 f2fs_warn(sbi, "test_dummy_encryption option not supported");
511 return -EINVAL;
512 }
513
ed318a6c
EB		 514 if (!f2fs_sb_has_encrypt(sbi)) {
515 f2fs_err(sbi, "Encrypt feature is off");
516 return -EINVAL;
517 }
518
519 /*
520 * This mount option is just for testing, and it's not worthwhile to
521 * implement the extra complexity (e.g. RCU protection) that would be
522 * needed to allow it to be set or changed during remount. We do allow
523 * it to be specified during remount, but only if there is no change.
524 */
c5bca38d 525 if (is_remount && !fscrypt_is_dummy_policy_set(policy)) {
ed318a6c
EB		 526 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
527 return -EINVAL;
528 }
c5bca38d
EB		 529
530 err = fscrypt_parse_test_dummy_encryption(&param, policy);
ed318a6c
EB		 531 if (err) {
532 if (err == -EEXIST)
533 f2fs_warn(sbi,
534 "Can't change test_dummy_encryption on remount");
535 else if (err == -EINVAL)
536 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
537 opt);
538 else
539 f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
540 opt, err);
541 return -EINVAL;
542 }
543 f2fs_warn(sbi, "Test dummy encryption mode enabled");
64e3ed0b 544 return 0;
ed318a6c
EB		 545}
546
3fde13f8 547#ifdef CONFIG_F2FS_FS_COMPRESSION
151b1982
FC		 548/*
549 * 1. The same extension name cannot not appear in both compress and non-compress extension
550 * at the same time.
551 * 2. If the compress extension specifies all files, the types specified by the non-compress
552 * extension will be treated as special cases and will not be compressed.
553 * 3. Don't allow the non-compress extension specifies all files.
554 */
555static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi)
556{
557 unsigned char (*ext)[F2FS_EXTENSION_LEN];
558 unsigned char (*noext)[F2FS_EXTENSION_LEN];
559 int ext_cnt, noext_cnt, index = 0, no_index = 0;
560
561 ext = F2FS_OPTION(sbi).extensions;
562 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
563 noext = F2FS_OPTION(sbi).noextensions;
564 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
565
566 if (!noext_cnt)
567 return 0;
568
569 for (no_index = 0; no_index < noext_cnt; no_index++) {
570 if (!strcasecmp("*", noext[no_index])) {
571 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files");
572 return -EINVAL;
573 }
574 for (index = 0; index < ext_cnt; index++) {
575 if (!strcasecmp(ext[index], noext[no_index])) {
576 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension",
577 ext[index]);
578 return -EINVAL;
579 }
580 }
581 }
582 return 0;
583}
584
3fde13f8
CY		 585#ifdef CONFIG_F2FS_FS_LZ4
586static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
587{
588#ifdef CONFIG_F2FS_FS_LZ4HC
589 unsigned int level;
590#endif
591
592 if (strlen(str) == 3) {
593 F2FS_OPTION(sbi).compress_level = 0;
594 return 0;
595 }
596
597#ifdef CONFIG_F2FS_FS_LZ4HC
598 str += 3;
599
600 if (str[0] != ':') {
601 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
602 return -EINVAL;
603 }
604 if (kstrtouint(str + 1, 10, &level))
605 return -EINVAL;
606
607 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
608 f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
609 return -EINVAL;
610 }
611
612 F2FS_OPTION(sbi).compress_level = level;
613 return 0;
614#else
615 f2fs_info(sbi, "kernel doesn't support lz4hc compression");
616 return -EINVAL;
617#endif
618}
619#endif
620
621#ifdef CONFIG_F2FS_FS_ZSTD
622static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
623{
624 unsigned int level;
625 int len = 4;
626
627 if (strlen(str) == len) {
628 F2FS_OPTION(sbi).compress_level = 0;
629 return 0;
630 }
631
632 str += len;
633
634 if (str[0] != ':') {
635 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
636 return -EINVAL;
637 }
638 if (kstrtouint(str + 1, 10, &level))
639 return -EINVAL;
640
cf30f6a5 641 if (!level || level > zstd_max_clevel()) {
3fde13f8
CY		 642 f2fs_info(sbi, "invalid zstd compress level: %d", level);
643 return -EINVAL;
644 }
645
646 F2FS_OPTION(sbi).compress_level = level;
647 return 0;
648}
649#endif
650#endif
651
ed318a6c 652static int parse_options(struct super_block *sb, char *options, bool is_remount)
696c018c
NJ		 653{
654 struct f2fs_sb_info *sbi = F2FS_SB(sb);
655 substring_t args[MAX_OPT_ARGS];
1f0b067b 656#ifdef CONFIG_F2FS_FS_COMPRESSION
4c8ff709 657 unsigned char (*ext)[F2FS_EXTENSION_LEN];
151b1982
FC		 658 unsigned char (*noext)[F2FS_EXTENSION_LEN];
659 int ext_cnt, noext_cnt;
1f0b067b 660#endif
696c018c 661 char *p, *name;
1f0b067b 662 int arg = 0;
7c2e5963
JK		 663 kuid_t uid;
664 kgid_t gid;
4b2414d0 665 int ret;
696c018c
NJ		 666
667 if (!options)
a7d9fe3c 668 goto default_check;
696c018c
NJ		 669
670 while ((p = strsep(&options, ",")) != NULL) {
671 int token;
5f029c04 672
696c018c
NJ		 673 if (!*p)
674 continue;
675 /*
676 * Initialize args struct so we know whether arg was
677 * found; some options take optional arguments.
678 */
679 args[0].to = args[0].from = NULL;
680 token = match_token(p, f2fs_tokens, args);
681
682 switch (token) {
683 case Opt_gc_background:
684 name = match_strdup(&args[0]);
685
686 if (!name)
687 return -ENOMEM;
3c57f751 688 if (!strcmp(name, "on")) {
bbbc34fd 689 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
3c57f751 690 } else if (!strcmp(name, "off")) {
bbbc34fd 691 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
3c57f751 692 } else if (!strcmp(name, "sync")) {
bbbc34fd 693 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
6aefd93b 694 } else {
ba87a45c 695 kfree(name);
696c018c
NJ		 696 return -EINVAL;
697 }
ba87a45c 698 kfree(name);
696c018c
NJ		 699 break;
700 case Opt_disable_roll_forward:
701 set_opt(sbi, DISABLE_ROLL_FORWARD);
702 break;
2d834bf9
JK		 703 case Opt_norecovery:
704 /* this option mounts f2fs with ro */
a9117eca 705 set_opt(sbi, NORECOVERY);
2d834bf9
JK		 706 if (!f2fs_readonly(sb))
707 return -EINVAL;
708 break;
696c018c 709 case Opt_discard:
f7db8dd6
CY		 710 if (!f2fs_hw_support_discard(sbi)) {
711 f2fs_warn(sbi, "device does not support discard");
712 break;
713 }
7d20c8ab 714 set_opt(sbi, DISCARD);
696c018c 715 break;
64058be9 716 case Opt_nodiscard:
f7db8dd6 717 if (f2fs_hw_should_discard(sbi)) {
dcbb4c10 718 f2fs_warn(sbi, "discard is required for zoned block devices");
96ba2dec
DLM		 719 return -EINVAL;
720 }
64058be9 721 clear_opt(sbi, DISCARD);
487df616 722 break;
696c018c
NJ		 723 case Opt_noheap:
724 set_opt(sbi, NOHEAP);
725 break;
7a20b8a6
JK		 726 case Opt_heap:
727 clear_opt(sbi, NOHEAP);
728 break;
696c018c 729#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 730 case Opt_user_xattr:
731 set_opt(sbi, XATTR_USER);
732 break;
696c018c
NJ		 733 case Opt_nouser_xattr:
734 clear_opt(sbi, XATTR_USER);
735 break;
444c580f
JK		 736 case Opt_inline_xattr:
737 set_opt(sbi, INLINE_XATTR);
738 break;
23cf7212
CY		 739 case Opt_noinline_xattr:
740 clear_opt(sbi, INLINE_XATTR);
741 break;
6afc662e
CY		 742 case Opt_inline_xattr_size:
743 if (args->from && match_int(args, &arg))
744 return -EINVAL;
745 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 746 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 747 break;
696c018c 748#else
4058c511 749 case Opt_user_xattr:
dcbb4c10 750 f2fs_info(sbi, "user_xattr options not supported");
4058c511 751 break;
696c018c 752 case Opt_nouser_xattr:
dcbb4c10 753 f2fs_info(sbi, "nouser_xattr options not supported");
696c018c 754 break;
444c580f 755 case Opt_inline_xattr:
dcbb4c10 756 f2fs_info(sbi, "inline_xattr options not supported");
444c580f 757 break;
23cf7212 758 case Opt_noinline_xattr:
dcbb4c10 759 f2fs_info(sbi, "noinline_xattr options not supported");
23cf7212 760 break;
696c018c
NJ		 761#endif
762#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 763 case Opt_acl:
764 set_opt(sbi, POSIX_ACL);
765 break;
696c018c
NJ		 766 case Opt_noacl:
767 clear_opt(sbi, POSIX_ACL);
768 break;
769#else
4058c511 770 case Opt_acl:
dcbb4c10 771 f2fs_info(sbi, "acl options not supported");
4058c511 772 break;
696c018c 773 case Opt_noacl:
dcbb4c10 774 f2fs_info(sbi, "noacl options not supported");
696c018c
NJ		 775 break;
776#endif
777 case Opt_active_logs:
778 if (args->from && match_int(args, &arg))
779 return -EINVAL;
d0b9e42a
CY		 780 if (arg != 2 && arg != 4 &&
781 arg != NR_CURSEG_PERSIST_TYPE)
696c018c 782 return -EINVAL;
63189b78 783 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 784 break;
785 case Opt_disable_ext_identify:
786 set_opt(sbi, DISABLE_EXT_IDENTIFY);
787 break;
8274de77
HL		 788 case Opt_inline_data:
789 set_opt(sbi, INLINE_DATA);
790 break;
5efd3c6f
CY		 791 case Opt_inline_dentry:
792 set_opt(sbi, INLINE_DENTRY);
793 break;
97c1794a
CY		 794 case Opt_noinline_dentry:
795 clear_opt(sbi, INLINE_DENTRY);
796 break;
6b4afdd7
JK		 797 case Opt_flush_merge:
798 set_opt(sbi, FLUSH_MERGE);
799 break;
69e9e427
JK		 800 case Opt_noflush_merge:
801 clear_opt(sbi, FLUSH_MERGE);
802 break;
0f7b2abd
JK		 803 case Opt_nobarrier:
804 set_opt(sbi, NOBARRIER);
805 break;
6047de54
YL		 806 case Opt_barrier:
807 clear_opt(sbi, NOBARRIER);
808 break;
d5053a34
JK		 809 case Opt_fastboot:
810 set_opt(sbi, FASTBOOT);
811 break;
89672159 812 case Opt_extent_cache:
12607c1b 813 set_opt(sbi, READ_EXTENT_CACHE);
89672159 814 break;
7daaea25 815 case Opt_noextent_cache:
12607c1b 816 clear_opt(sbi, READ_EXTENT_CACHE);
7daaea25 817 break;
75342797
WL		 818 case Opt_noinline_data:
819 clear_opt(sbi, INLINE_DATA);
820 break;
343f40f0
CY		 821 case Opt_data_flush:
822 set_opt(sbi, DATA_FLUSH);
823 break;
7e65be49
JK		 824 case Opt_reserve_root:
825 if (args->from && match_int(args, &arg))
826 return -EINVAL;
827 if (test_opt(sbi, RESERVE_ROOT)) {
dcbb4c10
JP		 828 f2fs_info(sbi, "Preserve previous reserve_root=%u",
829 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 830 } else {
63189b78 831 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 832 set_opt(sbi, RESERVE_ROOT);
833 }
834 break;
7c2e5963
JK		 835 case Opt_resuid:
836 if (args->from && match_int(args, &arg))
837 return -EINVAL;
838 uid = make_kuid(current_user_ns(), arg);
839 if (!uid_valid(uid)) {
dcbb4c10 840 f2fs_err(sbi, "Invalid uid value %d", arg);
7c2e5963
JK		 841 return -EINVAL;
842 }
63189b78 843 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 844 break;
845 case Opt_resgid:
846 if (args->from && match_int(args, &arg))
847 return -EINVAL;
848 gid = make_kgid(current_user_ns(), arg);
849 if (!gid_valid(gid)) {
dcbb4c10 850 f2fs_err(sbi, "Invalid gid value %d", arg);
7c2e5963
JK		 851 return -EINVAL;
852 }
63189b78 853 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 854 break;
36abef4e
JK		 855 case Opt_mode:
856 name = match_strdup(&args[0]);
857
858 if (!name)
859 return -ENOMEM;
3c57f751 860 if (!strcmp(name, "adaptive")) {
7beb01f7 861 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 862 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
ba87a45c 863 kfree(name);
3adc57e9
DLM		 864 return -EINVAL;
865 }
b0332a0f 866 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
3c57f751 867 } else if (!strcmp(name, "lfs")) {
b0332a0f 868 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
6691d940
DJ		 869 } else if (!strcmp(name, "fragment:segment")) {
870 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG;
871 } else if (!strcmp(name, "fragment:block")) {
872 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK;
36abef4e 873 } else {
ba87a45c 874 kfree(name);
36abef4e
JK		 875 return -EINVAL;
876 }
ba87a45c 877 kfree(name);
36abef4e 878 break;
ec91538d
JK		 879 case Opt_io_size_bits:
880 if (args->from && match_int(args, &arg))
881 return -EINVAL;
a8affc03 882 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) {
447286eb
YL		 883 f2fs_warn(sbi, "Not support %ld, larger than %d",
884 BIT(arg), BIO_MAX_VECS);
ec91538d
JK		 885 return -EINVAL;
886 }
63189b78 887 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 888 break;
4cb037ec 889#ifdef CONFIG_F2FS_FAULT_INJECTION
73faec4d
JK		 890 case Opt_fault_injection:
891 if (args->from && match_int(args, &arg))
892 return -EINVAL;
d494500a
CY		 893 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
894 set_opt(sbi, FAULT_INJECTION);
d494500a 895 break;
4cb037ec 896
d494500a
CY		 897 case Opt_fault_type:
898 if (args->from && match_int(args, &arg))
899 return -EINVAL;
d494500a 900 f2fs_build_fault_attr(sbi, 0, arg);
0cc0dec2 901 set_opt(sbi, FAULT_INJECTION);
4cb037ec 902 break;
73faec4d 903#else
4cb037ec 904 case Opt_fault_injection:
dcbb4c10 905 f2fs_info(sbi, "fault_injection options not supported");
73faec4d 906 break;
4cb037ec
CX		 907
908 case Opt_fault_type:
dcbb4c10 909 f2fs_info(sbi, "fault_type options not supported");
4cb037ec
CX		 910 break;
911#endif
6d94c74a 912 case Opt_lazytime:
1751e8a6 913 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 914 break;
915 case Opt_nolazytime:
1751e8a6 916 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 917 break;
0abd675e 918#ifdef CONFIG_QUOTA
4b2414d0 919 case Opt_quota:
0abd675e
CY		 920 case Opt_usrquota:
921 set_opt(sbi, USRQUOTA);
922 break;
923 case Opt_grpquota:
924 set_opt(sbi, GRPQUOTA);
925 break;
5c57132e
CY		 926 case Opt_prjquota:
927 set_opt(sbi, PRJQUOTA);
928 break;
4b2414d0
CY		 929 case Opt_usrjquota:
930 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
931 if (ret)
932 return ret;
933 break;
934 case Opt_grpjquota:
935 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
936 if (ret)
937 return ret;
938 break;
939 case Opt_prjjquota:
940 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
941 if (ret)
942 return ret;
943 break;
944 case Opt_offusrjquota:
945 ret = f2fs_clear_qf_name(sb, USRQUOTA);
946 if (ret)
947 return ret;
948 break;
949 case Opt_offgrpjquota:
950 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
951 if (ret)
952 return ret;
953 break;
954 case Opt_offprjjquota:
955 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
956 if (ret)
957 return ret;
958 break;
959 case Opt_jqfmt_vfsold:
63189b78 960 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 961 break;
962 case Opt_jqfmt_vfsv0:
63189b78 963 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 964 break;
965 case Opt_jqfmt_vfsv1:
63189b78 966 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 967 break;
968 case Opt_noquota:
969 clear_opt(sbi, QUOTA);
970 clear_opt(sbi, USRQUOTA);
971 clear_opt(sbi, GRPQUOTA);
972 clear_opt(sbi, PRJQUOTA);
973 break;
0abd675e 974#else
4b2414d0 975 case Opt_quota:
0abd675e
CY		 976 case Opt_usrquota:
977 case Opt_grpquota:
5c57132e 978 case Opt_prjquota:
4b2414d0
CY		 979 case Opt_usrjquota:
980 case Opt_grpjquota:
981 case Opt_prjjquota:
982 case Opt_offusrjquota:
983 case Opt_offgrpjquota:
984 case Opt_offprjjquota:
985 case Opt_jqfmt_vfsold:
986 case Opt_jqfmt_vfsv0:
987 case Opt_jqfmt_vfsv1:
988 case Opt_noquota:
dcbb4c10 989 f2fs_info(sbi, "quota operations not supported");
0abd675e
CY		 990 break;
991#endif
07939627
JK		 992 case Opt_alloc:
993 name = match_strdup(&args[0]);
994 if (!name)
995 return -ENOMEM;
996
3c57f751 997 if (!strcmp(name, "default")) {
63189b78 998 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
3c57f751 999 } else if (!strcmp(name, "reuse")) {
63189b78 1000 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627 1001 } else {
ba87a45c 1002 kfree(name);
07939627
JK		 1003 return -EINVAL;
1004 }
ba87a45c 1005 kfree(name);
07939627 1006 break;
93cf93f1
JZ		 1007 case Opt_fsync:
1008 name = match_strdup(&args[0]);
1009 if (!name)
1010 return -ENOMEM;
3c57f751 1011 if (!strcmp(name, "posix")) {
63189b78 1012 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
3c57f751 1013 } else if (!strcmp(name, "strict")) {
63189b78 1014 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
3c57f751 1015 } else if (!strcmp(name, "nobarrier")) {
d6290814
JK		 1016 F2FS_OPTION(sbi).fsync_mode =
1017 FSYNC_MODE_NOBARRIER;
93cf93f1 1018 } else {
ba87a45c 1019 kfree(name);
93cf93f1
JZ		 1020 return -EINVAL;
1021 }
ba87a45c 1022 kfree(name);
93cf93f1 1023 break;
ff62af20 1024 case Opt_test_dummy_encryption:
ed318a6c
EB		 1025 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
1026 is_remount);
1027 if (ret)
1028 return ret;
ff62af20 1029 break;
27aacd28
ST		 1030 case Opt_inlinecrypt:
1031#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
1032 sb->s_flags |= SB_INLINECRYPT;
1033#else
1034 f2fs_info(sbi, "inline encryption not supported");
1035#endif
1036 break;
4d3aed70
DR		 1037 case Opt_checkpoint_disable_cap_perc:
1038 if (args->from && match_int(args, &arg))
4354994f 1039 return -EINVAL;
4d3aed70
DR		 1040 if (arg < 0 || arg > 100)
1041 return -EINVAL;
1ae18f71 1042 F2FS_OPTION(sbi).unusable_cap_perc = arg;
4d3aed70
DR		 1043 set_opt(sbi, DISABLE_CHECKPOINT);
1044 break;
1045 case Opt_checkpoint_disable_cap:
1046 if (args->from && match_int(args, &arg))
1047 return -EINVAL;
1048 F2FS_OPTION(sbi).unusable_cap = arg;
1049 set_opt(sbi, DISABLE_CHECKPOINT);
1050 break;
1051 case Opt_checkpoint_disable:
1052 set_opt(sbi, DISABLE_CHECKPOINT);
1053 break;
1054 case Opt_checkpoint_enable:
1055 clear_opt(sbi, DISABLE_CHECKPOINT);
4354994f 1056 break;
261eeb9c
DJ		 1057 case Opt_checkpoint_merge:
1058 set_opt(sbi, MERGE_CHECKPOINT);
1059 break;
1060 case Opt_nocheckpoint_merge:
1061 clear_opt(sbi, MERGE_CHECKPOINT);
1062 break;
1f0b067b 1063#ifdef CONFIG_F2FS_FS_COMPRESSION
4c8ff709
CY		 1064 case Opt_compress_algorithm:
1065 if (!f2fs_sb_has_compression(sbi)) {
69c0dd29
CY		 1066 f2fs_info(sbi, "Image doesn't support compression");
1067 break;
4c8ff709
CY		 1068 }
1069 name = match_strdup(&args[0]);
1070 if (!name)
1071 return -ENOMEM;
3c57f751 1072 if (!strcmp(name, "lzo")) {
32be0e97 1073#ifdef CONFIG_F2FS_FS_LZO
3fde13f8 1074 F2FS_OPTION(sbi).compress_level = 0;
4c8ff709
CY		 1075 F2FS_OPTION(sbi).compress_algorithm =
1076 COMPRESS_LZO;
32be0e97
CY		 1077#else
1078 f2fs_info(sbi, "kernel doesn't support lzo compression");
1079#endif
3fde13f8 1080 } else if (!strncmp(name, "lz4", 3)) {
32be0e97 1081#ifdef CONFIG_F2FS_FS_LZ4
3fde13f8
CY		 1082 ret = f2fs_set_lz4hc_level(sbi, name);
1083 if (ret) {
1084 kfree(name);
1085 return -EINVAL;
1086 }
4c8ff709
CY		 1087 F2FS_OPTION(sbi).compress_algorithm =
1088 COMPRESS_LZ4;
32be0e97
CY		 1089#else
1090 f2fs_info(sbi, "kernel doesn't support lz4 compression");
1091#endif
3fde13f8 1092 } else if (!strncmp(name, "zstd", 4)) {
32be0e97 1093#ifdef CONFIG_F2FS_FS_ZSTD
3fde13f8
CY		 1094 ret = f2fs_set_zstd_level(sbi, name);
1095 if (ret) {
1096 kfree(name);
1097 return -EINVAL;
1098 }
50cfa66f
CY		 1099 F2FS_OPTION(sbi).compress_algorithm =
1100 COMPRESS_ZSTD;
32be0e97
CY		 1101#else
1102 f2fs_info(sbi, "kernel doesn't support zstd compression");
1103#endif
6d92b201 1104 } else if (!strcmp(name, "lzo-rle")) {
32be0e97 1105#ifdef CONFIG_F2FS_FS_LZORLE
3fde13f8 1106 F2FS_OPTION(sbi).compress_level = 0;
6d92b201
CY		 1107 F2FS_OPTION(sbi).compress_algorithm =
1108 COMPRESS_LZORLE;
32be0e97
CY		 1109#else
1110 f2fs_info(sbi, "kernel doesn't support lzorle compression");
1111#endif
4c8ff709
CY		 1112 } else {
1113 kfree(name);
1114 return -EINVAL;
1115 }
1116 kfree(name);
1117 break;
1118 case Opt_compress_log_size:
1119 if (!f2fs_sb_has_compression(sbi)) {
69c0dd29
CY		 1120 f2fs_info(sbi, "Image doesn't support compression");
1121 break;
4c8ff709
CY		 1122 }
1123 if (args->from && match_int(args, &arg))
1124 return -EINVAL;
1125 if (arg < MIN_COMPRESS_LOG_SIZE ||
1126 arg > MAX_COMPRESS_LOG_SIZE) {
1127 f2fs_err(sbi,
1128 "Compress cluster log size is out of range");
1129 return -EINVAL;
1130 }
1131 F2FS_OPTION(sbi).compress_log_size = arg;
1132 break;
1133 case Opt_compress_extension:
1134 if (!f2fs_sb_has_compression(sbi)) {
69c0dd29
CY		 1135 f2fs_info(sbi, "Image doesn't support compression");
1136 break;
4c8ff709
CY		 1137 }
1138 name = match_strdup(&args[0]);
1139 if (!name)
1140 return -ENOMEM;
1141
1142 ext = F2FS_OPTION(sbi).extensions;
1143 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
1144
1145 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1146 ext_cnt >= COMPRESS_EXT_NUM) {
1147 f2fs_err(sbi,
1148 "invalid extension length/number");
1149 kfree(name);
1150 return -EINVAL;
1151 }
1152
1153 strcpy(ext[ext_cnt], name);
1154 F2FS_OPTION(sbi).compress_ext_cnt++;
1155 kfree(name);
1156 break;
151b1982
FC		 1157 case Opt_nocompress_extension:
1158 if (!f2fs_sb_has_compression(sbi)) {
1159 f2fs_info(sbi, "Image doesn't support compression");
1160 break;
1161 }
1162 name = match_strdup(&args[0]);
1163 if (!name)
1164 return -ENOMEM;
1165
1166 noext = F2FS_OPTION(sbi).noextensions;
1167 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
1168
1169 if (strlen(name) >= F2FS_EXTENSION_LEN ||
1170 noext_cnt >= COMPRESS_EXT_NUM) {
1171 f2fs_err(sbi,
1172 "invalid extension length/number");
1173 kfree(name);
1174 return -EINVAL;
1175 }
1176
1177 strcpy(noext[noext_cnt], name);
1178 F2FS_OPTION(sbi).nocompress_ext_cnt++;
1179 kfree(name);
1180 break;
b28f047b 1181 case Opt_compress_chksum:
d4998b78
YL		 1182 if (!f2fs_sb_has_compression(sbi)) {
1183 f2fs_info(sbi, "Image doesn't support compression");
1184 break;
1185 }
b28f047b
CY		 1186 F2FS_OPTION(sbi).compress_chksum = true;
1187 break;
602a16d5 1188 case Opt_compress_mode:
d4998b78
YL		 1189 if (!f2fs_sb_has_compression(sbi)) {
1190 f2fs_info(sbi, "Image doesn't support compression");
1191 break;
1192 }
602a16d5
DJ		 1193 name = match_strdup(&args[0]);
1194 if (!name)
1195 return -ENOMEM;
1196 if (!strcmp(name, "fs")) {
1197 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
1198 } else if (!strcmp(name, "user")) {
1199 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER;
1200 } else {
1201 kfree(name);
1202 return -EINVAL;
1203 }
1204 kfree(name);
1205 break;
6ce19aff 1206 case Opt_compress_cache:
d4998b78
YL		 1207 if (!f2fs_sb_has_compression(sbi)) {
1208 f2fs_info(sbi, "Image doesn't support compression");
1209 break;
1210 }
6ce19aff
CY		 1211 set_opt(sbi, COMPRESS_CACHE);
1212 break;
1f0b067b
CY		 1213#else
1214 case Opt_compress_algorithm:
1215 case Opt_compress_log_size:
1216 case Opt_compress_extension:
151b1982 1217 case Opt_nocompress_extension:
b28f047b 1218 case Opt_compress_chksum:
602a16d5 1219 case Opt_compress_mode:
6ce19aff 1220 case Opt_compress_cache:
1f0b067b
CY		 1221 f2fs_info(sbi, "compression options not supported");
1222 break;
1223#endif
093749e2
CY		 1224 case Opt_atgc:
1225 set_opt(sbi, ATGC);
1226 break;
5911d2d1
CY		 1227 case Opt_gc_merge:
1228 set_opt(sbi, GC_MERGE);
1229 break;
1230 case Opt_nogc_merge:
1231 clear_opt(sbi, GC_MERGE);
1232 break;
4f993264
CY		 1233 case Opt_discard_unit:
1234 name = match_strdup(&args[0]);
1235 if (!name)
1236 return -ENOMEM;
1237 if (!strcmp(name, "block")) {
1238 F2FS_OPTION(sbi).discard_unit =
1239 DISCARD_UNIT_BLOCK;
1240 } else if (!strcmp(name, "segment")) {
1241 F2FS_OPTION(sbi).discard_unit =
1242 DISCARD_UNIT_SEGMENT;
1243 } else if (!strcmp(name, "section")) {
1244 F2FS_OPTION(sbi).discard_unit =
1245 DISCARD_UNIT_SECTION;
1246 } else {
1247 kfree(name);
1248 return -EINVAL;
1249 }
1250 kfree(name);
1251 break;
7a8fc586
DJ		 1252 case Opt_memory_mode:
1253 name = match_strdup(&args[0]);
1254 if (!name)
1255 return -ENOMEM;
1256 if (!strcmp(name, "normal")) {
1257 F2FS_OPTION(sbi).memory_mode =
1258 MEMORY_MODE_NORMAL;
1259 } else if (!strcmp(name, "low")) {
1260 F2FS_OPTION(sbi).memory_mode =
1261 MEMORY_MODE_LOW;
1262 } else {
1263 kfree(name);
1264 return -EINVAL;
1265 }
1266 kfree(name);
1267 break;
71644dff
JK		 1268 case Opt_age_extent_cache:
1269 set_opt(sbi, AGE_EXTENT_CACHE);
1270 break;
696c018c 1271 default:
dcbb4c10
JP		 1272 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
1273 p);
696c018c
NJ		 1274 return -EINVAL;
1275 }
1276 }
a7d9fe3c 1277default_check:
4b2414d0
CY		 1278#ifdef CONFIG_QUOTA
1279 if (f2fs_check_quota_options(sbi))
1280 return -EINVAL;
00960c2c 1281#else
7beb01f7 1282 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 1283 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
00960c2c
SY		 1284 return -EINVAL;
1285 }
7beb01f7 1286 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 1287 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
4ddc1b28
CY		 1288 return -EINVAL;
1289 }
4b2414d0 1290#endif
5298d4bf 1291#if !IS_ENABLED(CONFIG_UNICODE)
5aba5430
DR		 1292 if (f2fs_sb_has_casefold(sbi)) {
1293 f2fs_err(sbi,
1294 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
1295 return -EINVAL;
1296 }
1297#endif
d0660122
CY		 1298 /*
1299 * The BLKZONED feature indicates that the drive was formatted with
1300 * zone alignment optimization. This is optional for host-aware
1301 * devices, but mandatory for host-managed zoned block devices.
1302 */
4f993264 1303 if (f2fs_sb_has_blkzoned(sbi)) {
b5a711ac 1304#ifdef CONFIG_BLK_DEV_ZONED
4f993264
CY		 1305 if (F2FS_OPTION(sbi).discard_unit !=
1306 DISCARD_UNIT_SECTION) {
1307 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default");
1308 F2FS_OPTION(sbi).discard_unit =
1309 DISCARD_UNIT_SECTION;
1310 }
b5a711ac
YL		 1311#else
1312 f2fs_err(sbi, "Zoned block device support is not enabled");
1313 return -EINVAL;
1314#endif
4f993264 1315 }
ec91538d 1316
151b1982
FC		 1317#ifdef CONFIG_F2FS_FS_COMPRESSION
1318 if (f2fs_test_compress_extension(sbi)) {
1319 f2fs_err(sbi, "invalid compress or nocompress extension");
1320 return -EINVAL;
1321 }
1322#endif
1323
b0332a0f 1324 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
447286eb 1325 f2fs_err(sbi, "Should set mode=lfs with %luKB-sized IO",
dcbb4c10 1326 F2FS_IO_SIZE_KB(sbi));
ec91538d
JK		 1327 return -EINVAL;
1328 }
6afc662e
CY		 1329
1330 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
70db5b04
JK		 1331 int min_size, max_size;
1332
7beb01f7
CY		 1333 if (!f2fs_sb_has_extra_attr(sbi) ||
1334 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
dcbb4c10 1335 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
4d817ae0
CY		 1336 return -EINVAL;
1337 }
6afc662e 1338 if (!test_opt(sbi, INLINE_XATTR)) {
dcbb4c10 1339 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
6afc662e
CY		 1340 return -EINVAL;
1341 }
70db5b04
JK		 1342
1343 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
dd6c89b5 1344 max_size = MAX_INLINE_XATTR_SIZE;
70db5b04
JK		 1345
1346 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
1347 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
dcbb4c10
JP		 1348 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
1349 min_size, max_size);
6afc662e
CY		 1350 return -EINVAL;
1351 }
1352 }
0cdd3195 1353
b0332a0f 1354 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
c5bf8348 1355 f2fs_err(sbi, "LFS is not compatible with checkpoint=disable");
4354994f
DR		 1356 return -EINVAL;
1357 }
1358
80dc113a 1359 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) {
c5bf8348 1360 f2fs_err(sbi, "LFS is not compatible with ATGC");
80dc113a
JK		 1361 return -EINVAL;
1362 }
1363
ed8ac22b 1364 if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) {
967eaad1
YL		 1365 f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode");
1366 return -EINVAL;
1367 }
1368
a7d9fe3c
JK		 1369 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
1370 f2fs_err(sbi, "Allow to mount readonly mode only");
1371 return -EROFS;
1372 }
696c018c
NJ		 1373 return 0;
1374}
1375
aff063e2
JK		 1376static struct inode *f2fs_alloc_inode(struct super_block *sb)
1377{
1378 struct f2fs_inode_info *fi;
1379
c40e15a9 1380 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC))
65d3af64 1381 return NULL;
65d3af64
MS		 1382
1383 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 1384 if (!fi)
1385 return NULL;
1386
1387 init_once((void *) fi);
1388
434720fa 1389 /* Initialize f2fs-specific inode info */
204706c7 1390 atomic_set(&fi->dirty_pages, 0);
c2759eba 1391 atomic_set(&fi->i_compr_blocks, 0);
e4544b63 1392 init_f2fs_rwsem(&fi->i_sem);
c10c9820 1393 spin_lock_init(&fi->i_size_lock);
2710fd7e 1394 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 1395 INIT_LIST_HEAD(&fi->gdirty_list);
e4544b63
TM		 1396 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]);
1397 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]);
1398 init_f2fs_rwsem(&fi->i_xattr_sem);
aff063e2 1399
ab9fa662
JK		 1400 /* Will be used by directory only */
1401 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 1402
aff063e2
JK		 1403 return &fi->vfs_inode;
1404}
1405
531ad7d5
JK		 1406static int f2fs_drop_inode(struct inode *inode)
1407{
a8933b6b 1408 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
b8d96a30 1409 int ret;
a8933b6b
CY		 1410
1411 /*
1412 * during filesystem shutdown, if checkpoint is disabled,
1413 * drop useless meta/node dirty pages.
1414 */
1415 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1416 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1417 inode->i_ino == F2FS_META_INO(sbi)) {
1418 trace_f2fs_drop_inode(inode, 1);
1419 return 1;
1420 }
1421 }
1422
531ad7d5
JK		 1423 /*
1424 * This is to avoid a deadlock condition like below.
1425 * writeback_single_inode(inode)
1426 * - f2fs_write_data_page
1427 * - f2fs_gc -> iput -> evict
1428 * - inode_wait_for_writeback(inode)
1429 */
0f18b462 1430 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 1431 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 1432 /* to avoid evict_inode call simultaneously */
1433 atomic_inc(&inode->i_count);
06e1bc05
JK		 1434 spin_unlock(&inode->i_lock);
1435
3e72f721
JK		 1436 /* should remain fi->extent_tree for writepage */
1437 f2fs_destroy_extent_node(inode);
1438
06e1bc05 1439 sb_start_intwrite(inode->i_sb);
fc9581c8 1440 f2fs_i_size_write(inode, 0);
06e1bc05 1441
a0770e13 1442 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1443 inode, NULL, 0, DATA);
1444 truncate_inode_pages_final(inode->i_mapping);
1445
06e1bc05 1446 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 1447 f2fs_truncate(inode);
06e1bc05
JK		 1448
1449 sb_end_intwrite(inode->i_sb);
1450
06e1bc05 1451 spin_lock(&inode->i_lock);
3e72f721 1452 atomic_dec(&inode->i_count);
06e1bc05 1453 }
b8d96a30 1454 trace_f2fs_drop_inode(inode, 0);
531ad7d5 1455 return 0;
06e1bc05 1456 }
b8d96a30 1457 ret = generic_drop_inode(inode);
8ce589c7
EB		 1458 if (!ret)
1459 ret = fscrypt_drop_inode(inode);
b8d96a30
HP		 1460 trace_f2fs_drop_inode(inode, ret);
1461 return ret;
531ad7d5
JK		 1462}
1463
7c45729a 1464int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 1465{
0f18b462 1466 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 1467 int ret = 0;
0f18b462 1468
0f18b462
JK		 1469 spin_lock(&sbi->inode_lock[DIRTY_META]);
1470 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 1471 ret = 1;
1472 } else {
1473 set_inode_flag(inode, FI_DIRTY_INODE);
1474 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 1475 }
7c45729a
JK		 1476 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1477 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 1478 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 1479 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1480 }
338bbfa0 1481 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 1482 return ret;
0f18b462
JK		 1483}
1484
1485void f2fs_inode_synced(struct inode *inode)
1486{
1487 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1488
1489 spin_lock(&sbi->inode_lock[DIRTY_META]);
1490 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1491 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1492 return;
1493 }
7c45729a
JK		 1494 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1495 list_del_init(&F2FS_I(inode)->gdirty_list);
1496 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1497 }
0f18b462 1498 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 1499 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 1500 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 1501 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 1502}
1503
b56ab837
JK		 1504/*
1505 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1506 *
1507 * We should call set_dirty_inode to write the dirty inode through write_inode.
1508 */
1509static void f2fs_dirty_inode(struct inode *inode, int flags)
1510{
1511 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1512
1513 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1514 inode->i_ino == F2FS_META_INO(sbi))
1515 return;
1516
b56ab837
JK		 1517 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1518 clear_inode_flag(inode, FI_AUTO_RECOVER);
1519
7c45729a 1520 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 1521}
1522
d01718a0 1523static void f2fs_free_inode(struct inode *inode)
aff063e2 1524{
2c58d548 1525 fscrypt_free_inode(inode);
aff063e2
JK		 1526 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1527}
1528
523be8a6
JK		 1529static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1530{
513c5f37 1531 percpu_counter_destroy(&sbi->total_valid_inode_count);
47c8ebcc
JK		 1532 percpu_counter_destroy(&sbi->rf_node_block_count);
1533 percpu_counter_destroy(&sbi->alloc_valid_block_count);
523be8a6
JK		 1534}
1535
3c62be17
JK		 1536static void destroy_device_list(struct f2fs_sb_info *sbi)
1537{
1538 int i;
1539
1540 for (i = 0; i < sbi->s_ndevs; i++) {
1541 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1542#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1543 kvfree(FDEV(i).blkz_seq);
3c62be17
JK		 1544#endif
1545 }
5222595d 1546 kvfree(sbi->devs);
3c62be17
JK		 1547}
1548
aff063e2
JK		 1549static void f2fs_put_super(struct super_block *sb)
1550{
1551 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1552 int i;
b1c5ef26 1553 bool done;
aff063e2 1554
99c787cf
LG		 1555 /* unregister procfs/sysfs entries in advance to avoid race case */
1556 f2fs_unregister_sysfs(sbi);
1557
0abd675e 1558 f2fs_quota_off_umount(sb);
aff063e2 1559
2658e50d
JK		 1560 /* prevent remaining shrinker jobs */
1561 mutex_lock(&sbi->umount_mutex);
1562
261eeb9c
DJ		 1563 /*
1564 * flush all issued checkpoints and stop checkpoint issue thread.
1565 * after then, all checkpoints should be done by each process context.
1566 */
1567 f2fs_stop_ckpt_thread(sbi);
1568
85dc2f2c
JK		 1569 /*
1570 * We don't need to do checkpoint when superblock is clean.
1571 * But, the previous checkpoint was not done by umount, it needs to do
1572 * clean checkpoint again.
1573 */
4354994f
DR		 1574 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1575 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1576 struct cp_control cpc = {
1577 .reason = CP_UMOUNT,
1578 };
4d57b86d 1579 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1580 }
aff063e2 1581
4e6a8d9b 1582 /* be sure to wait for any on-going discard commands */
b1c5ef26
YL		 1583 done = f2fs_issue_discard_timeout(sbi);
1584 if (f2fs_realtime_discard_enable(sbi) && !sbi->discard_blks && done) {
1f43e2ad
CY		 1585 struct cp_control cpc = {
1586 .reason = CP_UMOUNT | CP_TRIMMED,
1587 };
4d57b86d 1588 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1589 }
1590
cf779cab
JK		 1591 /*
1592 * normally superblock is clean, so we need to release this.
1593 * In addition, EIO will skip do checkpoint, we need this as well.
1594 */
4d57b86d 1595 f2fs_release_ino_entry(sbi, true);
6f12ac25 1596
2658e50d
JK		 1597 f2fs_leave_shrinker(sbi);
1598 mutex_unlock(&sbi->umount_mutex);
1599
17c19120 1600 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1601 f2fs_flush_merged_writes(sbi);
17c19120 1602
bf22c3cc 1603 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
50fa53ec
CY		 1604
1605 f2fs_bug_on(sbi, sbi->fsync_node_num);
1606
6ce19aff
CY		 1607 f2fs_destroy_compress_inode(sbi);
1608
aff063e2 1609 iput(sbi->node_inode);
7c77bf7d
JK		 1610 sbi->node_inode = NULL;
1611
aff063e2 1612 iput(sbi->meta_inode);
7c77bf7d 1613 sbi->meta_inode = NULL;
aff063e2 1614
60aa4d55
ST		 1615 /*
1616 * iput() can update stat information, if f2fs_write_checkpoint()
1617 * above failed with error.
1618 */
1619 f2fs_destroy_stats(sbi);
1620
aff063e2 1621 /* destroy f2fs internal modules */
4d57b86d
CY		 1622 f2fs_destroy_node_manager(sbi);
1623 f2fs_destroy_segment_manager(sbi);
aff063e2 1624
4c8ff709
CY		 1625 f2fs_destroy_post_read_wq(sbi);
1626
5222595d 1627 kvfree(sbi->ckpt);
a398101a 1628
aff063e2 1629 sb->s_fs_info = NULL;
43b6573b
KM		 1630 if (sbi->s_chksum_driver)
1631 crypto_free_shash(sbi->s_chksum_driver);
742532d1 1632 kfree(sbi->raw_super);
523be8a6 1633
3c62be17 1634 destroy_device_list(sbi);
31083031 1635 f2fs_destroy_page_array_cache(sbi);
a999150f 1636 f2fs_destroy_xattr_caches(sbi);
b6895e8f 1637 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1638#ifdef CONFIG_QUOTA
1639 for (i = 0; i < MAXQUOTAS; i++)
ba87a45c 1640 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1641#endif
ac4acb1f 1642 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
523be8a6 1643 destroy_percpu_info(sbi);
a4b68176 1644 f2fs_destroy_iostat(sbi);
a912b54d 1645 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 1646 kvfree(sbi->write_io[i]);
5298d4bf 1647#if IS_ENABLED(CONFIG_UNICODE)
eca4873e 1648 utf8_unload(sb->s_encoding);
5aba5430 1649#endif
742532d1 1650 kfree(sbi);
aff063e2
JK		 1651}
1652
1653int f2fs_sync_fs(struct super_block *sb, int sync)
1654{
1655 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1656 int err = 0;
aff063e2 1657
1f227a3e
JK		 1658 if (unlikely(f2fs_cp_error(sbi)))
1659 return 0;
4354994f
DR		 1660 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1661 return 0;
1f227a3e 1662
a2a4a7e4
NJ		 1663 trace_f2fs_sync_fs(sb, sync);
1664
4b2414d0
CY		 1665 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1666 return -EAGAIN;
1667
261eeb9c
DJ		 1668 if (sync)
1669 err = f2fs_issue_checkpoint(sbi);
119ee914 1670
c34f42e2 1671 return err;
aff063e2
JK		 1672}
1673
d6212a5f
CL		 1674static int f2fs_freeze(struct super_block *sb)
1675{
77888c1e 1676 if (f2fs_readonly(sb))
d6212a5f
CL		 1677 return 0;
1678
b4b9d34c
JK		 1679 /* IO error happened before */
1680 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1681 return -EIO;
1682
1683 /* must be clean, since sync_filesystem() was already called */
1684 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1685 return -EINVAL;
d50dfc0c 1686
c7b58576
JK		 1687 /* Let's flush checkpoints and stop the thread. */
1688 f2fs_flush_ckpt_thread(F2FS_SB(sb));
ba900534
JK		 1689
1690 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */
1691 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING);
b4b9d34c 1692 return 0;
d6212a5f
CL		 1693}
1694
1695static int f2fs_unfreeze(struct super_block *sb)
1696{
ba900534 1697 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING);
d6212a5f
CL		 1698 return 0;
1699}
1700
ddc34e32
CY		 1701#ifdef CONFIG_QUOTA
1702static int f2fs_statfs_project(struct super_block *sb,
1703 kprojid_t projid, struct kstatfs *buf)
1704{
1705 struct kqid qid;
1706 struct dquot *dquot;
1707 u64 limit;
1708 u64 curblock;
1709
1710 qid = make_kqid_projid(projid);
1711 dquot = dqget(sb, qid);
1712 if (IS_ERR(dquot))
1713 return PTR_ERR(dquot);
955ac6e5 1714 spin_lock(&dquot->dq_dqb_lock);
ddc34e32 1715
bf2cbd3c
CX		 1716 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1717 dquot->dq_dqb.dqb_bhardlimit);
acdf2172
CX		 1718 if (limit)
1719 limit >>= sb->s_blocksize_bits;
909110c0 1720
ddc34e32 1721 if (limit && buf->f_blocks > limit) {
baaa7ebf
KK		 1722 curblock = (dquot->dq_dqb.dqb_curspace +
1723 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
ddc34e32
CY		 1724 buf->f_blocks = limit;
1725 buf->f_bfree = buf->f_bavail =
1726 (buf->f_blocks > curblock) ?
1727 (buf->f_blocks - curblock) : 0;
1728 }
1729
bf2cbd3c
CX		 1730 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1731 dquot->dq_dqb.dqb_ihardlimit);
909110c0 1732
ddc34e32
CY		 1733 if (limit && buf->f_files > limit) {
1734 buf->f_files = limit;
1735 buf->f_ffree =
1736 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1737 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1738 }
1739
955ac6e5 1740 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1741 dqput(dquot);
1742 return 0;
1743}
1744#endif
1745
aff063e2
JK		 1746static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1747{
1748 struct super_block *sb = dentry->d_sb;
1749 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1750 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1751 block_t total_count, user_block_count, start_count;
0cc091d0 1752 u64 avail_node_count;
4de85145 1753 unsigned int total_valid_node_count;
aff063e2
JK		 1754
1755 total_count = le64_to_cpu(sbi->raw_super->block_count);
aff063e2 1756 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1757 buf->f_type = F2FS_SUPER_MAGIC;
1758 buf->f_bsize = sbi->blocksize;
1759
1760 buf->f_blocks = total_count - start_count;
4de85145
ND		 1761
1762 spin_lock(&sbi->stat_lock);
1763
1764 user_block_count = sbi->user_block_count;
1765 total_valid_node_count = valid_node_count(sbi);
1766 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
f66c027e 1767 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1768 sbi->current_reserved_blocks;
c9c8ed50 1769
4354994f
DR		 1770 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1771 buf->f_bfree = 0;
1772 else
1773 buf->f_bfree -= sbi->unusable_block_count;
c9c8ed50 1774 spin_unlock(&sbi->stat_lock);
4354994f 1775
63189b78
CY		 1776 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1777 buf->f_bavail = buf->f_bfree -
1778 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1779 else
1780 buf->f_bavail = 0;
aff063e2 1781
0cc091d0
JK		 1782 if (avail_node_count > user_block_count) {
1783 buf->f_files = user_block_count;
1784 buf->f_ffree = buf->f_bavail;
1785 } else {
1786 buf->f_files = avail_node_count;
4de85145 1787 buf->f_ffree = min(avail_node_count - total_valid_node_count,
0cc091d0
JK		 1788 buf->f_bavail);
1789 }
aff063e2 1790
5a20d339 1791 buf->f_namelen = F2FS_NAME_LEN;
6d1349c7 1792 buf->f_fsid = u64_to_fsid(id);
aff063e2 1793
ddc34e32
CY		 1794#ifdef CONFIG_QUOTA
1795 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1796 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1797 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1798 }
1799#endif
aff063e2
JK		 1800 return 0;
1801}
1802
4b2414d0
CY		 1803static inline void f2fs_show_quota_options(struct seq_file *seq,
1804 struct super_block *sb)
1805{
1806#ifdef CONFIG_QUOTA
1807 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1808
63189b78 1809 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1810 char *fmtname = "";
1811
63189b78 1812 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1813 case QFMT_VFS_OLD:
1814 fmtname = "vfsold";
1815 break;
1816 case QFMT_VFS_V0:
1817 fmtname = "vfsv0";
1818 break;
1819 case QFMT_VFS_V1:
1820 fmtname = "vfsv1";
1821 break;
1822 }
1823 seq_printf(seq, ",jqfmt=%s", fmtname);
1824 }
1825
63189b78
CY		 1826 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1827 seq_show_option(seq, "usrjquota",
1828 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1829
63189b78
CY		 1830 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1831 seq_show_option(seq, "grpjquota",
1832 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1833
63189b78
CY		 1834 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1835 seq_show_option(seq, "prjjquota",
1836 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1837#endif
1838}
1839
cd6ee739 1840#ifdef CONFIG_F2FS_FS_COMPRESSION
4c8ff709
CY		 1841static inline void f2fs_show_compress_options(struct seq_file *seq,
1842 struct super_block *sb)
1843{
1844 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1845 char *algtype = "";
1846 int i;
1847
1848 if (!f2fs_sb_has_compression(sbi))
1849 return;
1850
1851 switch (F2FS_OPTION(sbi).compress_algorithm) {
1852 case COMPRESS_LZO:
1853 algtype = "lzo";
1854 break;
1855 case COMPRESS_LZ4:
1856 algtype = "lz4";
1857 break;
50cfa66f
CY		 1858 case COMPRESS_ZSTD:
1859 algtype = "zstd";
1860 break;
6d92b201
CY		 1861 case COMPRESS_LZORLE:
1862 algtype = "lzo-rle";
1863 break;
4c8ff709
CY		 1864 }
1865 seq_printf(seq, ",compress_algorithm=%s", algtype);
1866
3fde13f8
CY		 1867 if (F2FS_OPTION(sbi).compress_level)
1868 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level);
1869
4c8ff709
CY		 1870 seq_printf(seq, ",compress_log_size=%u",
1871 F2FS_OPTION(sbi).compress_log_size);
1872
1873 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1874 seq_printf(seq, ",compress_extension=%s",
1875 F2FS_OPTION(sbi).extensions[i]);
1876 }
b28f047b 1877
151b1982
FC		 1878 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) {
1879 seq_printf(seq, ",nocompress_extension=%s",
1880 F2FS_OPTION(sbi).noextensions[i]);
1881 }
1882
b28f047b
CY		 1883 if (F2FS_OPTION(sbi).compress_chksum)
1884 seq_puts(seq, ",compress_chksum");
602a16d5
DJ		 1885
1886 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS)
1887 seq_printf(seq, ",compress_mode=%s", "fs");
1888 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER)
1889 seq_printf(seq, ",compress_mode=%s", "user");
6ce19aff
CY		 1890
1891 if (test_opt(sbi, COMPRESS_CACHE))
1892 seq_puts(seq, ",compress_cache");
4c8ff709 1893}
cd6ee739 1894#endif
4c8ff709 1895
aff063e2
JK		 1896static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1897{
1898 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1899
bbbc34fd
CY		 1900 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1901 seq_printf(seq, ",background_gc=%s", "sync");
1902 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1903 seq_printf(seq, ",background_gc=%s", "on");
1904 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
696c018c 1905 seq_printf(seq, ",background_gc=%s", "off");
bbbc34fd 1906
5911d2d1
CY		 1907 if (test_opt(sbi, GC_MERGE))
1908 seq_puts(seq, ",gc_merge");
04d7a7ae
YL		 1909 else
1910 seq_puts(seq, ",nogc_merge");
5911d2d1 1911
aff063e2
JK		 1912 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1913 seq_puts(seq, ",disable_roll_forward");
a9117eca
CY		 1914 if (test_opt(sbi, NORECOVERY))
1915 seq_puts(seq, ",norecovery");
2381a685 1916 if (test_opt(sbi, DISCARD)) {
aff063e2 1917 seq_puts(seq, ",discard");
2381a685
YL		 1918 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK)
1919 seq_printf(seq, ",discard_unit=%s", "block");
1920 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT)
1921 seq_printf(seq, ",discard_unit=%s", "segment");
1922 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION)
1923 seq_printf(seq, ",discard_unit=%s", "section");
1924 } else {
81621f97 1925 seq_puts(seq, ",nodiscard");
2381a685 1926 }
aff063e2 1927 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1928 seq_puts(seq, ",no_heap");
1929 else
1930 seq_puts(seq, ",heap");
aff063e2
JK		 1931#ifdef CONFIG_F2FS_FS_XATTR
1932 if (test_opt(sbi, XATTR_USER))
1933 seq_puts(seq, ",user_xattr");
1934 else
1935 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1936 if (test_opt(sbi, INLINE_XATTR))
1937 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1938 else
1939 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1940 if (test_opt(sbi, INLINE_XATTR_SIZE))
1941 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1942 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1943#endif
1944#ifdef CONFIG_F2FS_FS_POSIX_ACL
1945 if (test_opt(sbi, POSIX_ACL))
1946 seq_puts(seq, ",acl");
1947 else
1948 seq_puts(seq, ",noacl");
1949#endif
1950 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1951 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1952 if (test_opt(sbi, INLINE_DATA))
1953 seq_puts(seq, ",inline_data");
75342797
WL		 1954 else
1955 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1956 if (test_opt(sbi, INLINE_DENTRY))
1957 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1958 else
1959 seq_puts(seq, ",noinline_dentry");
967eaad1 1960 if (test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1961 seq_puts(seq, ",flush_merge");
967eaad1
YL		 1962 else
1963 seq_puts(seq, ",noflush_merge");
0f7b2abd
JK		 1964 if (test_opt(sbi, NOBARRIER))
1965 seq_puts(seq, ",nobarrier");
6047de54
YL		 1966 else
1967 seq_puts(seq, ",barrier");
d5053a34
JK		 1968 if (test_opt(sbi, FASTBOOT))
1969 seq_puts(seq, ",fastboot");
12607c1b 1970 if (test_opt(sbi, READ_EXTENT_CACHE))
89672159 1971 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1972 else
1973 seq_puts(seq, ",noextent_cache");
71644dff
JK		 1974 if (test_opt(sbi, AGE_EXTENT_CACHE))
1975 seq_puts(seq, ",age_extent_cache");
343f40f0
CY		 1976 if (test_opt(sbi, DATA_FLUSH))
1977 seq_puts(seq, ",data_flush");
36abef4e
JK		 1978
1979 seq_puts(seq, ",mode=");
b0332a0f 1980 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
36abef4e 1981 seq_puts(seq, "adaptive");
b0332a0f 1982 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
36abef4e 1983 seq_puts(seq, "lfs");
6691d940
DJ		 1984 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG)
1985 seq_puts(seq, "fragment:segment");
1986 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK)
1987 seq_puts(seq, "fragment:block");
63189b78 1988 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1989 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1990 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1991 F2FS_OPTION(sbi).root_reserved_blocks,
1992 from_kuid_munged(&init_user_ns,
1993 F2FS_OPTION(sbi).s_resuid),
1994 from_kgid_munged(&init_user_ns,
1995 F2FS_OPTION(sbi).s_resgid));
ec91538d 1996 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1997 seq_printf(seq, ",io_bits=%u",
1998 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1999#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 2000 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 2001 seq_printf(seq, ",fault_injection=%u",
63189b78 2002 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 2003 seq_printf(seq, ",fault_type=%u",
2004 F2FS_OPTION(sbi).fault_info.inject_type);
2005 }
0cc0dec2 2006#endif
0abd675e 2007#ifdef CONFIG_QUOTA
4b2414d0
CY		 2008 if (test_opt(sbi, QUOTA))
2009 seq_puts(seq, ",quota");
0abd675e
CY		 2010 if (test_opt(sbi, USRQUOTA))
2011 seq_puts(seq, ",usrquota");
2012 if (test_opt(sbi, GRPQUOTA))
2013 seq_puts(seq, ",grpquota");
5c57132e
CY		 2014 if (test_opt(sbi, PRJQUOTA))
2015 seq_puts(seq, ",prjquota");
0cc0dec2 2016#endif
4b2414d0 2017 f2fs_show_quota_options(seq, sbi->sb);
ed318a6c
EB		 2018
2019 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
aff063e2 2020
27aacd28
ST		 2021 if (sbi->sb->s_flags & SB_INLINECRYPT)
2022 seq_puts(seq, ",inlinecrypt");
2023
63189b78 2024 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 2025 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 2026 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 2027 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 2028
4354994f 2029 if (test_opt(sbi, DISABLE_CHECKPOINT))
4d3aed70
DR		 2030 seq_printf(seq, ",checkpoint=disable:%u",
2031 F2FS_OPTION(sbi).unusable_cap);
261eeb9c
DJ		 2032 if (test_opt(sbi, MERGE_CHECKPOINT))
2033 seq_puts(seq, ",checkpoint_merge");
2034 else
2035 seq_puts(seq, ",nocheckpoint_merge");
63189b78 2036 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 2037 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 2038 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 2039 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 2040 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
2041 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
4c8ff709 2042
1f0b067b 2043#ifdef CONFIG_F2FS_FS_COMPRESSION
4c8ff709 2044 f2fs_show_compress_options(seq, sbi->sb);
1f0b067b 2045#endif
093749e2
CY		 2046
2047 if (test_opt(sbi, ATGC))
2048 seq_puts(seq, ",atgc");
4f993264 2049
7a8fc586
DJ		 2050 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL)
2051 seq_printf(seq, ",memory=%s", "normal");
2052 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW)
2053 seq_printf(seq, ",memory=%s", "low");
2054
aff063e2
JK		 2055 return 0;
2056}
2057
498c5e9f
YH		 2058static void default_options(struct f2fs_sb_info *sbi)
2059{
2060 /* init some FS parameters */
a7d9fe3c
JK		 2061 if (f2fs_sb_has_readonly(sbi))
2062 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE;
2063 else
2064 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
2065
63189b78 2066 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
b7ad23ce
YG		 2067 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <=
2068 SMALL_VOLUME_SEGMENTS)
2069 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
2070 else
2071 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
63189b78 2072 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
0aa7e0f8
CY		 2073 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
2074 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
c2c14ca5
YL		 2075 if (f2fs_sb_has_compression(sbi)) {
2076 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
2077 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
2078 F2FS_OPTION(sbi).compress_ext_cnt = 0;
2079 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS;
2080 }
bbbc34fd 2081 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
7a8fc586 2082 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL;
498c5e9f 2083
27aacd28
ST		 2084 sbi->sb->s_flags &= ~SB_INLINECRYPT;
2085
39133a50 2086 set_opt(sbi, INLINE_XATTR);
498c5e9f 2087 set_opt(sbi, INLINE_DATA);
97c1794a 2088 set_opt(sbi, INLINE_DENTRY);
12607c1b 2089 set_opt(sbi, READ_EXTENT_CACHE);
7a20b8a6 2090 set_opt(sbi, NOHEAP);
4354994f 2091 clear_opt(sbi, DISABLE_CHECKPOINT);
b5d15199 2092 set_opt(sbi, MERGE_CHECKPOINT);
4d3aed70 2093 F2FS_OPTION(sbi).unusable_cap = 0;
1751e8a6 2094 sbi->sb->s_flags |= SB_LAZYTIME;
ed8ac22b 2095 if (!f2fs_is_readonly(sbi))
967eaad1 2096 set_opt(sbi, FLUSH_MERGE);
f7db8dd6
CY		 2097 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi))
2098 set_opt(sbi, DISCARD);
4f993264 2099 if (f2fs_sb_has_blkzoned(sbi)) {
b0332a0f 2100 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
4f993264
CY		 2101 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION;
2102 } else {
b0332a0f 2103 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
4f993264
CY		 2104 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK;
2105 }
498c5e9f
YH		 2106
2107#ifdef CONFIG_F2FS_FS_XATTR
2108 set_opt(sbi, XATTR_USER);
2109#endif
2110#ifdef CONFIG_F2FS_FS_POSIX_ACL
2111 set_opt(sbi, POSIX_ACL);
2112#endif
36dbd328 2113
d494500a 2114 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 2115}
2116
ea676733
JK		 2117#ifdef CONFIG_QUOTA
2118static int f2fs_enable_quotas(struct super_block *sb);
2119#endif
4354994f
DR		 2120
2121static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
2122{
812a9597 2123 unsigned int s_flags = sbi->sb->s_flags;
4354994f 2124 struct cp_control cpc;
2880f47b 2125 unsigned int gc_mode = sbi->gc_mode;
812a9597
JK		 2126 int err = 0;
2127 int ret;
4d3aed70 2128 block_t unusable;
4354994f 2129
812a9597 2130 if (s_flags & SB_RDONLY) {
dcbb4c10 2131 f2fs_err(sbi, "checkpoint=disable on readonly fs");
812a9597
JK		 2132 return -EINVAL;
2133 }
4354994f
DR		 2134 sbi->sb->s_flags |= SB_ACTIVE;
2135
2880f47b
WG		 2136 /* check if we need more GC first */
2137 unusable = f2fs_get_unusable_blocks(sbi);
2138 if (!f2fs_disable_cp_again(sbi, unusable))
2139 goto skip_gc;
2140
4354994f
DR		 2141 f2fs_update_time(sbi, DISABLE_TIME);
2142
98e92867
CY		 2143 sbi->gc_mode = GC_URGENT_HIGH;
2144
4354994f 2145 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
d147ea4a
JK		 2146 struct f2fs_gc_control gc_control = {
2147 .victim_segno = NULL_SEGNO,
2148 .init_gc_type = FG_GC,
2149 .should_migrate_blocks = false,
c81d5bae
JK		 2150 .err_gc_skipped = true,
2151 .nr_free_secs = 1 };
d147ea4a 2152
e4544b63 2153 f2fs_down_write(&sbi->gc_lock);
d147ea4a 2154 err = f2fs_gc(sbi, &gc_control);
812a9597
JK		 2155 if (err == -ENODATA) {
2156 err = 0;
4354994f 2157 break;
812a9597 2158 }
8f31b466 2159 if (err && err != -EAGAIN)
812a9597 2160 break;
4354994f 2161 }
4354994f 2162
812a9597
JK		 2163 ret = sync_filesystem(sbi->sb);
2164 if (ret || err) {
5f029c04 2165 err = ret ? ret : err;
812a9597
JK		 2166 goto restore_flag;
2167 }
4354994f 2168
4d3aed70
DR		 2169 unusable = f2fs_get_unusable_blocks(sbi);
2170 if (f2fs_disable_cp_again(sbi, unusable)) {
812a9597
JK		 2171 err = -EAGAIN;
2172 goto restore_flag;
2173 }
4354994f 2174
2880f47b 2175skip_gc:
e4544b63 2176 f2fs_down_write(&sbi->gc_lock);
4354994f
DR		 2177 cpc.reason = CP_PAUSE;
2178 set_sbi_flag(sbi, SBI_CP_DISABLED);
896285ad
CY		 2179 err = f2fs_write_checkpoint(sbi, &cpc);
2180 if (err)
2181 goto out_unlock;
4354994f 2182
c9c8ed50 2183 spin_lock(&sbi->stat_lock);
4d3aed70 2184 sbi->unusable_block_count = unusable;
c9c8ed50
CY		 2185 spin_unlock(&sbi->stat_lock);
2186
896285ad 2187out_unlock:
e4544b63 2188 f2fs_up_write(&sbi->gc_lock);
812a9597 2189restore_flag:
98e92867 2190 sbi->gc_mode = gc_mode;
7a88ddb5 2191 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
812a9597 2192 return err;
4354994f
DR		 2193}
2194
2195static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
2196{
dddd3d65
JK		 2197 int retry = DEFAULT_RETRY_IO_COUNT;
2198
b0ff4fe7 2199 /* we should flush all the data to keep data consistency */
dddd3d65
JK		 2200 do {
2201 sync_inodes_sb(sbi->sb);
a64239d0 2202 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
dddd3d65
JK		 2203 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--);
2204
2205 if (unlikely(retry < 0))
2206 f2fs_warn(sbi, "checkpoint=enable has some unwritten data.");
b0ff4fe7 2207
e4544b63 2208 f2fs_down_write(&sbi->gc_lock);
4354994f
DR		 2209 f2fs_dirty_to_prefree(sbi);
2210
2211 clear_sbi_flag(sbi, SBI_CP_DISABLED);
2212 set_sbi_flag(sbi, SBI_IS_DIRTY);
e4544b63 2213 f2fs_up_write(&sbi->gc_lock);
4354994f
DR		 2214
2215 f2fs_sync_fs(sbi->sb, 1);
4f99484d
JK		 2216
2217 /* Let's ensure there's no pending checkpoint anymore */
2218 f2fs_flush_ckpt_thread(sbi);
4354994f
DR		 2219}
2220
696c018c
NJ		 2221static int f2fs_remount(struct super_block *sb, int *flags, char *data)
2222{
2223 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2224 struct f2fs_mount_info org_mount_opt;
0abd675e 2225 unsigned long old_sb_flags;
63189b78 2226 int err;
3fd97359
CY		 2227 bool need_restart_gc = false, need_stop_gc = false;
2228 bool need_restart_ckpt = false, need_stop_ckpt = false;
2229 bool need_restart_flush = false, need_stop_flush = false;
4d674904 2230 bool need_restart_discard = false, need_stop_discard = false;
12607c1b 2231 bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE);
71644dff 2232 bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE);
277afbde 2233 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT);
1f78adfa 2234 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
093749e2 2235 bool no_atgc = !test_opt(sbi, ATGC);
4d674904 2236 bool no_discard = !test_opt(sbi, DISCARD);
6ce19aff 2237 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE);
4f993264 2238 bool block_unit_discard = f2fs_block_unit_discard(sbi);
4b2414d0 2239#ifdef CONFIG_QUOTA
4b2414d0
CY		 2240 int i, j;
2241#endif
696c018c
NJ		 2242
2243 /*
2244 * Save the old mount options in case we
2245 * need to restore them.
2246 */
2247 org_mount_opt = sbi->mount_opt;
0abd675e 2248 old_sb_flags = sb->s_flags;
696c018c 2249
4b2414d0 2250#ifdef CONFIG_QUOTA
63189b78 2251 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 2252 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 2253 if (F2FS_OPTION(sbi).s_qf_names[i]) {
2254 org_mount_opt.s_qf_names[i] =
2255 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
2256 GFP_KERNEL);
2257 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 2258 for (j = 0; j < i; j++)
ba87a45c 2259 kfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 2260 return -ENOMEM;
2261 }
2262 } else {
63189b78 2263 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 2264 }
2265 }
2266#endif
2267
df728b0f 2268 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 2269 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f 2270 err = f2fs_commit_super(sbi, false);
dcbb4c10
JP		 2271 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
2272 err);
df728b0f
JK		 2273 if (!err)
2274 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
2275 }
2276
498c5e9f 2277 default_options(sbi);
26666c8a 2278
696c018c 2279 /* parse mount options */
ed318a6c 2280 err = parse_options(sb, data, true);
696c018c
NJ		 2281 if (err)
2282 goto restore_opts;
2283
2284 /*
2285 * Previous and new state of filesystem is RO,
876dc59e 2286 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 2287 */
1751e8a6 2288 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 2289 goto skip;
2290
d78dfefc 2291 if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) {
a7d9fe3c
JK		 2292 err = -EROFS;
2293 goto restore_opts;
2294 }
2295
ea676733 2296#ifdef CONFIG_QUOTA
1751e8a6 2297 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 2298 err = dquot_suspend(sb, -1);
2299 if (err < 0)
2300 goto restore_opts;
4354994f 2301 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 2302 /* dquot_resume needs RW */
1751e8a6 2303 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 2304 if (sb_any_quota_suspended(sb)) {
2305 dquot_resume(sb, -1);
7beb01f7 2306 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 2307 err = f2fs_enable_quotas(sb);
2308 if (err)
2309 goto restore_opts;
2310 }
0abd675e 2311 }
ea676733 2312#endif
c5bf8348
YL		 2313 if (f2fs_lfs_mode(sbi) && !IS_F2FS_IPU_DISABLE(sbi)) {
2314 err = -EINVAL;
2315 f2fs_warn(sbi, "LFS is not compatible with IPU");
2316 goto restore_opts;
2317 }
2318
093749e2
CY		 2319 /* disallow enable atgc dynamically */
2320 if (no_atgc == !!test_opt(sbi, ATGC)) {
2321 err = -EINVAL;
2322 f2fs_warn(sbi, "switch atgc option is not allowed");
2323 goto restore_opts;
2324 }
2325
9cd81ce3 2326 /* disallow enable/disable extent_cache dynamically */
12607c1b 2327 if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) {
9cd81ce3 2328 err = -EINVAL;
dcbb4c10 2329 f2fs_warn(sbi, "switch extent_cache option is not allowed");
9cd81ce3
CY		 2330 goto restore_opts;
2331 }
71644dff
JK		 2332 /* disallow enable/disable age extent_cache dynamically */
2333 if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) {
2334 err = -EINVAL;
2335 f2fs_warn(sbi, "switch age_extent_cache option is not allowed");
2336 goto restore_opts;
2337 }
9cd81ce3 2338
1f78adfa
CY		 2339 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
2340 err = -EINVAL;
2341 f2fs_warn(sbi, "switch io_bits option is not allowed");
2342 goto restore_opts;
2343 }
2344
6ce19aff
CY		 2345 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) {
2346 err = -EINVAL;
2347 f2fs_warn(sbi, "switch compress_cache option is not allowed");
2348 goto restore_opts;
2349 }
2350
4f993264
CY		 2351 if (block_unit_discard != f2fs_block_unit_discard(sbi)) {
2352 err = -EINVAL;
2353 f2fs_warn(sbi, "switch discard_unit option is not allowed");
2354 goto restore_opts;
2355 }
2356
4354994f
DR		 2357 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
2358 err = -EINVAL;
dcbb4c10 2359 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
4354994f
DR		 2360 goto restore_opts;
2361 }
2362
696c018c
NJ		 2363 /*
2364 * We stop the GC thread if FS is mounted as RO
2365 * or if background_gc = off is passed in mount
2366 * option. Also sync the filesystem.
2367 */
bbbc34fd 2368 if ((*flags & SB_RDONLY) ||
5911d2d1
CY		 2369 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF &&
2370 !test_opt(sbi, GC_MERGE))) {
696c018c 2371 if (sbi->gc_thread) {
4d57b86d 2372 f2fs_stop_gc_thread(sbi);
876dc59e 2373 need_restart_gc = true;
696c018c 2374 }
aba291b3 2375 } else if (!sbi->gc_thread) {
4d57b86d 2376 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 2377 if (err)
2378 goto restore_opts;
876dc59e
GZ		 2379 need_stop_gc = true;
2380 }
2381
930e2607 2382 if (*flags & SB_RDONLY) {
faa0e55b
JK		 2383 sync_inodes_sb(sb);
2384
2385 set_sbi_flag(sbi, SBI_IS_DIRTY);
2386 set_sbi_flag(sbi, SBI_IS_CLOSE);
2387 f2fs_sync_fs(sb, 1);
2388 clear_sbi_flag(sbi, SBI_IS_CLOSE);
2389 }
2390
3f7070b0
CY		 2391 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
2392 !test_opt(sbi, MERGE_CHECKPOINT)) {
2393 f2fs_stop_ckpt_thread(sbi);
3fd97359 2394 need_restart_ckpt = true;
3f7070b0 2395 } else {
4f99484d
JK		 2396 /* Flush if the prevous checkpoint, if exists. */
2397 f2fs_flush_ckpt_thread(sbi);
2398
261eeb9c
DJ		 2399 err = f2fs_start_ckpt_thread(sbi);
2400 if (err) {
2401 f2fs_err(sbi,
2402 "Failed to start F2FS issue_checkpoint_thread (%d)",
2403 err);
2404 goto restore_gc;
2405 }
3fd97359 2406 need_stop_ckpt = true;
261eeb9c
DJ		 2407 }
2408
876dc59e
GZ		 2409 /*
2410 * We stop issue flush thread if FS is mounted as RO
2411 * or if flush_merge is not passed in mount option.
2412 */
1751e8a6 2413 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 2414 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 2415 f2fs_destroy_flush_cmd_control(sbi, false);
3fd97359 2416 need_restart_flush = true;
5eba8c5d 2417 } else {
4d57b86d 2418 err = f2fs_create_flush_cmd_control(sbi);
2163d198 2419 if (err)
3fd97359
CY		 2420 goto restore_ckpt;
2421 need_stop_flush = true;
696c018c 2422 }
3fd97359 2423
4d674904
FC		 2424 if (no_discard == !!test_opt(sbi, DISCARD)) {
2425 if (test_opt(sbi, DISCARD)) {
2426 err = f2fs_start_discard_thread(sbi);
2427 if (err)
2428 goto restore_flush;
2429 need_stop_discard = true;
2430 } else {
4d674904 2431 f2fs_stop_discard_thread(sbi);
25547439 2432 f2fs_issue_discard_timeout(sbi);
4d674904
FC		 2433 need_restart_discard = true;
2434 }
2435 }
2436
277afbde 2437 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) {
3fd97359
CY		 2438 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
2439 err = f2fs_disable_checkpoint(sbi);
2440 if (err)
4d674904 2441 goto restore_discard;
3fd97359
CY		 2442 } else {
2443 f2fs_enable_checkpoint(sbi);
2444 }
2445 }
2446
696c018c 2447skip:
4b2414d0
CY		 2448#ifdef CONFIG_QUOTA
2449 /* Release old quota file names */
2450 for (i = 0; i < MAXQUOTAS; i++)
ba87a45c 2451 kfree(org_mount_opt.s_qf_names[i]);
4b2414d0 2452#endif
696c018c 2453 /* Update the POSIXACL Flag */
1751e8a6
LT		 2454 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
2455 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 2456
7e65be49 2457 limit_reserve_root(sbi);
1ae18f71 2458 adjust_unusable_cap_perc(sbi);
095680f2 2459 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 2460 return 0;
4d674904
FC		 2461restore_discard:
2462 if (need_restart_discard) {
2463 if (f2fs_start_discard_thread(sbi))
2464 f2fs_warn(sbi, "discard has been stopped");
2465 } else if (need_stop_discard) {
2466 f2fs_stop_discard_thread(sbi);
2467 }
3fd97359
CY		 2468restore_flush:
2469 if (need_restart_flush) {
2470 if (f2fs_create_flush_cmd_control(sbi))
2471 f2fs_warn(sbi, "background flush thread has stopped");
2472 } else if (need_stop_flush) {
2473 clear_opt(sbi, FLUSH_MERGE);
2474 f2fs_destroy_flush_cmd_control(sbi, false);
2475 }
2476restore_ckpt:
2477 if (need_restart_ckpt) {
2478 if (f2fs_start_ckpt_thread(sbi))
2479 f2fs_warn(sbi, "background ckpt thread has stopped");
2480 } else if (need_stop_ckpt) {
2481 f2fs_stop_ckpt_thread(sbi);
2482 }
876dc59e
GZ		 2483restore_gc:
2484 if (need_restart_gc) {
4d57b86d 2485 if (f2fs_start_gc_thread(sbi))
dcbb4c10 2486 f2fs_warn(sbi, "background gc thread has stopped");
876dc59e 2487 } else if (need_stop_gc) {
4d57b86d 2488 f2fs_stop_gc_thread(sbi);
876dc59e 2489 }
696c018c 2490restore_opts:
4b2414d0 2491#ifdef CONFIG_QUOTA
63189b78 2492 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 2493 for (i = 0; i < MAXQUOTAS; i++) {
ba87a45c 2494 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 2495 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 2496 }
2497#endif
696c018c 2498 sbi->mount_opt = org_mount_opt;
0abd675e 2499 sb->s_flags = old_sb_flags;
696c018c
NJ		 2500 return err;
2501}
2502
0abd675e 2503#ifdef CONFIG_QUOTA
e1bb7d3d
CY		 2504static bool f2fs_need_recovery(struct f2fs_sb_info *sbi)
2505{
2506 /* need to recovery orphan */
2507 if (is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG))
2508 return true;
2509 /* need to recovery data */
2510 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
2511 return false;
2512 if (test_opt(sbi, NORECOVERY))
2513 return false;
2514 return !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG);
2515}
2516
2517static bool f2fs_recover_quota_begin(struct f2fs_sb_info *sbi)
2518{
2519 bool readonly = f2fs_readonly(sbi->sb);
2520
2521 if (!f2fs_need_recovery(sbi))
2522 return false;
2523
2524 /* it doesn't need to check f2fs_sb_has_readonly() */
2525 if (f2fs_hw_is_readonly(sbi))
2526 return false;
2527
2528 if (readonly) {
2529 sbi->sb->s_flags &= ~SB_RDONLY;
2530 set_sbi_flag(sbi, SBI_IS_WRITABLE);
2531 }
2532
2533 /*
2534 * Turn on quotas which were not enabled for read-only mounts if
2535 * filesystem has quota feature, so that they are updated correctly.
2536 */
2537 return f2fs_enable_quota_files(sbi, readonly);
2538}
2539
2540static void f2fs_recover_quota_end(struct f2fs_sb_info *sbi,
2541 bool quota_enabled)
2542{
2543 if (quota_enabled)
2544 f2fs_quota_off_umount(sbi->sb);
2545
2546 if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE)) {
2547 clear_sbi_flag(sbi, SBI_IS_WRITABLE);
2548 sbi->sb->s_flags |= SB_RDONLY;
2549 }
2550}
2551
0abd675e
CY		 2552/* Read data from quotafile */
2553static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
2554 size_t len, loff_t off)
2555{
2556 struct inode *inode = sb_dqopt(sb)->files[type];
2557 struct address_space *mapping = inode->i_mapping;
2558 block_t blkidx = F2FS_BYTES_TO_BLK(off);
2559 int offset = off & (sb->s_blocksize - 1);
2560 int tocopy;
2561 size_t toread;
2562 loff_t i_size = i_size_read(inode);
2563 struct page *page;
0abd675e
CY		 2564
2565 if (off > i_size)
2566 return 0;
2567
2568 if (off + len > i_size)
2569 len = i_size - off;
2570 toread = len;
2571 while (toread > 0) {
2572 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
2573repeat:
02117b8a 2574 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 2575 if (IS_ERR(page)) {
2576 if (PTR_ERR(page) == -ENOMEM) {
4034247a 2577 memalloc_retry_wait(GFP_NOFS);
4e46a023
JK		 2578 goto repeat;
2579 }
af033b2a 2580 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 2581 return PTR_ERR(page);
4e46a023 2582 }
0abd675e
CY		 2583
2584 lock_page(page);
2585
2586 if (unlikely(page->mapping != mapping)) {
2587 f2fs_put_page(page, 1);
2588 goto repeat;
2589 }
2590 if (unlikely(!PageUptodate(page))) {
2591 f2fs_put_page(page, 1);
af033b2a 2592 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 2593 return -EIO;
2594 }
2595
b87846bd 2596 memcpy_from_page(data, page, offset, tocopy);
0abd675e
CY		 2597 f2fs_put_page(page, 1);
2598
2599 offset = 0;
2600 toread -= tocopy;
2601 data += tocopy;
2602 blkidx++;
2603 }
2604 return len;
2605}
2606
2607/* Write to quotafile */
2608static ssize_t f2fs_quota_write(struct super_block *sb, int type,
2609 const char *data, size_t len, loff_t off)
2610{
2611 struct inode *inode = sb_dqopt(sb)->files[type];
2612 struct address_space *mapping = inode->i_mapping;
2613 const struct address_space_operations *a_ops = mapping->a_ops;
2614 int offset = off & (sb->s_blocksize - 1);
2615 size_t towrite = len;
2616 struct page *page;
62f63eea 2617 void *fsdata = NULL;
0abd675e
CY		 2618 int err = 0;
2619 int tocopy;
2620
2621 while (towrite > 0) {
2622 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
2623 towrite);
4e46a023 2624retry:
9d6b0cd7 2625 err = a_ops->write_begin(NULL, mapping, off, tocopy,
62f63eea 2626 &page, &fsdata);
4e46a023
JK		 2627 if (unlikely(err)) {
2628 if (err == -ENOMEM) {
a64239d0 2629 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT);
4e46a023
JK		 2630 goto retry;
2631 }
af033b2a 2632 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 2633 break;
4e46a023 2634 }
0abd675e 2635
b87846bd 2636 memcpy_to_page(page, offset, data, tocopy);
0abd675e
CY		 2637
2638 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
62f63eea 2639 page, fsdata);
0abd675e
CY		 2640 offset = 0;
2641 towrite -= tocopy;
2642 off += tocopy;
2643 data += tocopy;
2644 cond_resched();
2645 }
2646
2647 if (len == towrite)
6e5b5d41 2648 return err;
0abd675e
CY		 2649 inode->i_mtime = inode->i_ctime = current_time(inode);
2650 f2fs_mark_inode_dirty_sync(inode, false);
2651 return len - towrite;
2652}
2653
10a26878
CY		 2654int f2fs_dquot_initialize(struct inode *inode)
2655{
c40e15a9 2656 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT))
10a26878 2657 return -ESRCH;
10a26878
CY		 2658
2659 return dquot_initialize(inode);
2660}
2661
0abd675e
CY		 2662static struct dquot **f2fs_get_dquots(struct inode *inode)
2663{
2664 return F2FS_I(inode)->i_dquot;
2665}
2666
2667static qsize_t *f2fs_get_reserved_space(struct inode *inode)
2668{
2669 return &F2FS_I(inode)->i_reserved_quota;
2670}
2671
4b2414d0
CY		 2672static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
2673{
af033b2a 2674 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 2675 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
af033b2a
CY		 2676 return 0;
2677 }
2678
63189b78
CY		 2679 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
2680 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 2681}
2682
ea676733 2683int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 2684{
ea676733
JK		 2685 int enabled = 0;
2686 int i, err;
2687
7beb01f7 2688 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 2689 err = f2fs_enable_quotas(sbi->sb);
2690 if (err) {
dcbb4c10 2691 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
ea676733
JK		 2692 return 0;
2693 }
2694 return 1;
2695 }
4b2414d0
CY		 2696
2697 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 2698 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 2699 err = f2fs_quota_on_mount(sbi, i);
2700 if (!err) {
2701 enabled = 1;
2702 continue;
2703 }
dcbb4c10
JP		 2704 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2705 err, i);
4b2414d0
CY		 2706 }
2707 }
ea676733
JK		 2708 return enabled;
2709}
2710
2711static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2712 unsigned int flags)
2713{
2714 struct inode *qf_inode;
2715 unsigned long qf_inum;
2716 int err;
2717
7beb01f7 2718 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 2719
2720 qf_inum = f2fs_qf_ino(sb, type);
2721 if (!qf_inum)
2722 return -EPERM;
2723
2724 qf_inode = f2fs_iget(sb, qf_inum);
2725 if (IS_ERR(qf_inode)) {
dcbb4c10 2726 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
ea676733
JK		 2727 return PTR_ERR(qf_inode);
2728 }
2729
2730 /* Don't account quota for quota files to avoid recursion */
2731 qf_inode->i_flags |= S_NOQUOTA;
7212b95e 2732 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
ea676733
JK		 2733 iput(qf_inode);
2734 return err;
2735}
2736
2737static int f2fs_enable_quotas(struct super_block *sb)
2738{
dcbb4c10 2739 struct f2fs_sb_info *sbi = F2FS_SB(sb);
ea676733
JK		 2740 int type, err = 0;
2741 unsigned long qf_inum;
2742 bool quota_mopt[MAXQUOTAS] = {
dcbb4c10
JP		 2743 test_opt(sbi, USRQUOTA),
2744 test_opt(sbi, GRPQUOTA),
2745 test_opt(sbi, PRJQUOTA),
ea676733
JK		 2746 };
2747
af033b2a 2748 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 2749 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
af033b2a
CY		 2750 return 0;
2751 }
2752
2753 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2754
ea676733
JK		 2755 for (type = 0; type < MAXQUOTAS; type++) {
2756 qf_inum = f2fs_qf_ino(sb, type);
2757 if (qf_inum) {
2758 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2759 DQUOT_USAGE_ENABLED |
2760 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2761 if (err) {
dcbb4c10
JP		 2762 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2763 type, err);
ea676733
JK		 2764 for (type--; type >= 0; type--)
2765 dquot_quota_off(sb, type);
af033b2a
CY		 2766 set_sbi_flag(F2FS_SB(sb),
2767 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 2768 return err;
2769 }
4b2414d0
CY		 2770 }
2771 }
ea676733 2772 return 0;
4b2414d0
CY		 2773}
2774
9de71ede
CY		 2775static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type)
2776{
2777 struct quota_info *dqopt = sb_dqopt(sbi->sb);
2778 struct address_space *mapping = dqopt->files[type]->i_mapping;
2779 int ret = 0;
2780
2781 ret = dquot_writeback_dquots(sbi->sb, type);
2782 if (ret)
2783 goto out;
2784
2785 ret = filemap_fdatawrite(mapping);
2786 if (ret)
2787 goto out;
2788
2789 /* if we are using journalled quota */
2790 if (is_journalled_quota(sbi))
2791 goto out;
2792
2793 ret = filemap_fdatawait(mapping);
2794
2795 truncate_inode_pages(&dqopt->files[type]->i_data, 0);
2796out:
2797 if (ret)
2798 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2799 return ret;
2800}
2801
af033b2a 2802int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 2803{
af033b2a 2804 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 2805 struct quota_info *dqopt = sb_dqopt(sb);
2806 int cnt;
680af5b8 2807 int ret = 0;
0abd675e 2808
0abd675e
CY		 2809 /*
2810 * Now when everything is written we can discard the pagecache so
2811 * that userspace sees the changes.
2812 */
2813 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a 2814
0abd675e
CY		 2815 if (type != -1 && cnt != type)
2816 continue;
0abd675e 2817
680af5b8
JP		 2818 if (!sb_has_quota_active(sb, cnt))
2819 continue;
af033b2a 2820
6213f5d4
JK		 2821 if (!f2fs_sb_has_quota_ino(sbi))
2822 inode_lock(dqopt->files[cnt]);
af033b2a 2823
9de71ede
CY		 2824 /*
2825 * do_quotactl
2826 * f2fs_quota_sync
e4544b63 2827 * f2fs_down_read(quota_sem)
9de71ede
CY		 2828 * dquot_writeback_dquots()
2829 * f2fs_dquot_commit
2830 * block_operation
e4544b63 2831 * f2fs_down_read(quota_sem)
9de71ede
CY		 2832 */
2833 f2fs_lock_op(sbi);
e4544b63 2834 f2fs_down_read(&sbi->quota_sem);
af033b2a 2835
9de71ede
CY		 2836 ret = f2fs_quota_sync_file(sbi, cnt);
2837
e4544b63 2838 f2fs_up_read(&sbi->quota_sem);
9de71ede 2839 f2fs_unlock_op(sbi);
0abd675e 2840
6213f5d4
JK		 2841 if (!f2fs_sb_has_quota_ino(sbi))
2842 inode_unlock(dqopt->files[cnt]);
9de71ede
CY		 2843
2844 if (ret)
2845 break;
0abd675e 2846 }
af033b2a 2847 return ret;
0abd675e
CY		 2848}
2849
2850static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2851 const struct path *path)
2852{
2853 struct inode *inode;
2854 int err;
2855
fe973b06
CY		 2856 /* if quota sysfile exists, deny enabling quota with specific file */
2857 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2858 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2859 return -EBUSY;
2860 }
2861
9a20d391 2862 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 2863 if (err)
2864 return err;
2865
2866 err = dquot_quota_on(sb, type, format_id, path);
2867 if (err)
2868 return err;
2869
2870 inode = d_inode(path->dentry);
2871
2872 inode_lock(inode);
59c84408 2873 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 2874 f2fs_set_inode_flags(inode);
0abd675e
CY		 2875 inode_unlock(inode);
2876 f2fs_mark_inode_dirty_sync(inode, false);
2877
2878 return 0;
2879}
2880
fe973b06 2881static int __f2fs_quota_off(struct super_block *sb, int type)
0abd675e
CY		 2882{
2883 struct inode *inode = sb_dqopt(sb)->files[type];
2884 int err;
2885
2886 if (!inode || !igrab(inode))
2887 return dquot_quota_off(sb, type);
2888
cda9cc59
YH		 2889 err = f2fs_quota_sync(sb, type);
2890 if (err)
2891 goto out_put;
0abd675e
CY		 2892
2893 err = dquot_quota_off(sb, type);
7beb01f7 2894 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2895 goto out_put;
2896
2897 inode_lock(inode);
59c84408 2898 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2899 f2fs_set_inode_flags(inode);
0abd675e
CY		 2900 inode_unlock(inode);
2901 f2fs_mark_inode_dirty_sync(inode, false);
2902out_put:
2903 iput(inode);
2904 return err;
2905}
2906
fe973b06
CY		 2907static int f2fs_quota_off(struct super_block *sb, int type)
2908{
2909 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2910 int err;
2911
2912 err = __f2fs_quota_off(sb, type);
2913
2914 /*
2915 * quotactl can shutdown journalled quota, result in inconsistence
2916 * between quota record and fs data by following updates, tag the
2917 * flag to let fsck be aware of it.
2918 */
2919 if (is_journalled_quota(sbi))
2920 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2921 return err;
2922}
2923
4b2414d0 2924void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2925{
2926 int type;
cda9cc59
YH		 2927 int err;
2928
2929 for (type = 0; type < MAXQUOTAS; type++) {
fe973b06 2930 err = __f2fs_quota_off(sb, type);
cda9cc59
YH		 2931 if (err) {
2932 int ret = dquot_quota_off(sb, type);
0abd675e 2933
dcbb4c10
JP		 2934 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2935 type, err, ret);
af033b2a 2936 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2937 }
2938 }
0e0667b6
JK		 2939 /*
2940 * In case of checkpoint=disable, we must flush quota blocks.
2941 * This can cause NULL exception for node_inode in end_io, since
2942 * put_super already dropped it.
2943 */
2944 sync_filesystem(sb);
0abd675e
CY		 2945}
2946
26b5a079
SY		 2947static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2948{
2949 struct quota_info *dqopt = sb_dqopt(sb);
2950 int type;
2951
2952 for (type = 0; type < MAXQUOTAS; type++) {
2953 if (!dqopt->files[type])
2954 continue;
2955 f2fs_inode_synced(dqopt->files[type]);
2956 }
2957}
2958
af033b2a
CY		 2959static int f2fs_dquot_commit(struct dquot *dquot)
2960{
db6ec53b 2961 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2962 int ret;
2963
e4544b63 2964 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
af033b2a
CY		 2965 ret = dquot_commit(dquot);
2966 if (ret < 0)
db6ec53b 2967 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
e4544b63 2968 f2fs_up_read(&sbi->quota_sem);
af033b2a
CY		 2969 return ret;
2970}
2971
2972static int f2fs_dquot_acquire(struct dquot *dquot)
2973{
db6ec53b 2974 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2975 int ret;
2976
e4544b63 2977 f2fs_down_read(&sbi->quota_sem);
af033b2a
CY		 2978 ret = dquot_acquire(dquot);
2979 if (ret < 0)
db6ec53b 2980 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
e4544b63 2981 f2fs_up_read(&sbi->quota_sem);
af033b2a
CY		 2982 return ret;
2983}
2984
2985static int f2fs_dquot_release(struct dquot *dquot)
2986{
db6ec53b 2987 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2c4e0c52 2988 int ret = dquot_release(dquot);
af033b2a 2989
af033b2a 2990 if (ret < 0)
db6ec53b 2991 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2992 return ret;
2993}
2994
2995static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2996{
2997 struct super_block *sb = dquot->dq_sb;
2998 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2999 int ret = dquot_mark_dquot_dirty(dquot);
af033b2a
CY		 3000
3001 /* if we are using journalled quota */
3002 if (is_journalled_quota(sbi))
3003 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
3004
3005 return ret;
3006}
3007
3008static int f2fs_dquot_commit_info(struct super_block *sb, int type)
3009{
db6ec53b 3010 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 3011 int ret = dquot_commit_info(sb, type);
af033b2a 3012
af033b2a 3013 if (ret < 0)
db6ec53b 3014 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 3015 return ret;
3016}
26b5a079 3017
94b1e10e 3018static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 3019{
3020 *projid = F2FS_I(inode)->i_projid;
3021 return 0;
3022}
3023
0abd675e
CY		 3024static const struct dquot_operations f2fs_quota_operations = {
3025 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 3026 .write_dquot = f2fs_dquot_commit,
3027 .acquire_dquot = f2fs_dquot_acquire,
3028 .release_dquot = f2fs_dquot_release,
3029 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
3030 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 3031 .alloc_dquot = dquot_alloc,
3032 .destroy_dquot = dquot_destroy,
5c57132e 3033 .get_projid = f2fs_get_projid,
0abd675e
CY		 3034 .get_next_id = dquot_get_next_id,
3035};
3036
3037static const struct quotactl_ops f2fs_quotactl_ops = {
3038 .quota_on = f2fs_quota_on,
3039 .quota_off = f2fs_quota_off,
3040 .quota_sync = f2fs_quota_sync,
3041 .get_state = dquot_get_state,
3042 .set_info = dquot_set_dqinfo,
3043 .get_dqblk = dquot_get_dqblk,
3044 .set_dqblk = dquot_set_dqblk,
3045 .get_nextdqblk = dquot_get_next_dqblk,
3046};
3047#else
10a26878
CY		 3048int f2fs_dquot_initialize(struct inode *inode)
3049{
3050 return 0;
3051}
3052
af033b2a
CY		 3053int f2fs_quota_sync(struct super_block *sb, int type)
3054{
3055 return 0;
3056}
3057
4b2414d0 3058void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 3059{
3060}
3061#endif
3062
f62fc9f9 3063static const struct super_operations f2fs_sops = {
aff063e2 3064 .alloc_inode = f2fs_alloc_inode,
d01718a0 3065 .free_inode = f2fs_free_inode,
531ad7d5 3066 .drop_inode = f2fs_drop_inode,
aff063e2 3067 .write_inode = f2fs_write_inode,
b3783873 3068 .dirty_inode = f2fs_dirty_inode,
aff063e2 3069 .show_options = f2fs_show_options,
0abd675e
CY		 3070#ifdef CONFIG_QUOTA
3071 .quota_read = f2fs_quota_read,
3072 .quota_write = f2fs_quota_write,
3073 .get_dquots = f2fs_get_dquots,
3074#endif
aff063e2
JK		 3075 .evict_inode = f2fs_evict_inode,
3076 .put_super = f2fs_put_super,
3077 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 3078 .freeze_fs = f2fs_freeze,
3079 .unfreeze_fs = f2fs_unfreeze,
aff063e2 3080 .statfs = f2fs_statfs,
696c018c 3081 .remount_fs = f2fs_remount,
aff063e2
JK		 3082};
3083
643fa961 3084#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 3085static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
3086{
3087 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
3088 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
3089 ctx, len, NULL);
3090}
3091
3092static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
3093 void *fs_data)
3094{
b7c409de
SY		 3095 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3096
3097 /*
3098 * Encrypting the root directory is not allowed because fsck
3099 * expects lost+found directory to exist and remain unencrypted
3100 * if LOST_FOUND feature is enabled.
3101 *
3102 */
7beb01f7 3103 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 3104 inode->i_ino == F2FS_ROOT_INO(sbi))
3105 return -EPERM;
3106
0b81d077
JK		 3107 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
3108 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
3109 ctx, len, fs_data, XATTR_CREATE);
3110}
3111
ac4acb1f 3112static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
ff62af20 3113{
ac4acb1f 3114 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy;
ff62af20
SY		 3115}
3116
0eee17e3
EB		 3117static bool f2fs_has_stable_inodes(struct super_block *sb)
3118{
3119 return true;
3120}
3121
3122static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
3123 int *ino_bits_ret, int *lblk_bits_ret)
3124{
3125 *ino_bits_ret = 8 * sizeof(nid_t);
3126 *lblk_bits_ret = 8 * sizeof(block_t);
3127}
3128
0e91fc1e
CH		 3129static struct block_device **f2fs_get_devices(struct super_block *sb,
3130 unsigned int *num_devs)
27aacd28
ST		 3131{
3132 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0e91fc1e
CH		 3133 struct block_device **devs;
3134 int i;
27aacd28 3135
0e91fc1e
CH		 3136 if (!f2fs_is_multi_device(sbi))
3137 return NULL;
27aacd28 3138
0e91fc1e
CH		 3139 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL);
3140 if (!devs)
3141 return ERR_PTR(-ENOMEM);
27aacd28
ST		 3142
3143 for (i = 0; i < sbi->s_ndevs; i++)
0e91fc1e
CH		 3144 devs[i] = FDEV(i).bdev;
3145 *num_devs = sbi->s_ndevs;
3146 return devs;
27aacd28
ST		 3147}
3148
6f69f0ed 3149static const struct fscrypt_operations f2fs_cryptops = {
0eee17e3
EB		 3150 .key_prefix = "f2fs:",
3151 .get_context = f2fs_get_context,
3152 .set_context = f2fs_set_context,
ac4acb1f 3153 .get_dummy_policy = f2fs_get_dummy_policy,
0eee17e3 3154 .empty_dir = f2fs_empty_dir,
0eee17e3
EB		 3155 .has_stable_inodes = f2fs_has_stable_inodes,
3156 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
27aacd28 3157 .get_devices = f2fs_get_devices,
0b81d077 3158};
0b81d077
JK		 3159#endif
3160
aff063e2
JK		 3161static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
3162 u64 ino, u32 generation)
3163{
3164 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3165 struct inode *inode;
3166
4d57b86d 3167 if (f2fs_check_nid_range(sbi, ino))
910bb12d 3168 return ERR_PTR(-ESTALE);
aff063e2
JK		 3169
3170 /*
3171 * f2fs_iget isn't quite right if the inode is currently unallocated!
3172 * However f2fs_iget currently does appropriate checks to handle stale
3173 * inodes so everything is OK.
3174 */
3175 inode = f2fs_iget(sb, ino);
3176 if (IS_ERR(inode))
3177 return ERR_CAST(inode);
6bacf52f 3178 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 3179 /* we didn't find the right inode.. */
3180 iput(inode);
3181 return ERR_PTR(-ESTALE);
3182 }
3183 return inode;
3184}
3185
3186static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
3187 int fh_len, int fh_type)
3188{
3189 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
3190 f2fs_nfs_get_inode);
3191}
3192
3193static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
3194 int fh_len, int fh_type)
3195{
3196 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
3197 f2fs_nfs_get_inode);
3198}
3199
3200static const struct export_operations f2fs_export_ops = {
3201 .fh_to_dentry = f2fs_fh_to_dentry,
3202 .fh_to_parent = f2fs_fh_to_parent,
3203 .get_parent = f2fs_get_parent,
3204};
3205
6d1451bf 3206loff_t max_file_blocks(struct inode *inode)
aff063e2 3207{
7a2af766 3208 loff_t result = 0;
6d1451bf 3209 loff_t leaf_count;
aff063e2 3210
7a2af766
CY		 3211 /*
3212 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 3213 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 3214 * space in inode.i_addr, it will be more safe to reassign
3215 * result as zero.
3216 */
3217
6d1451bf
CX		 3218 if (inode && f2fs_compressed_file(inode))
3219 leaf_count = ADDRS_PER_BLOCK(inode);
3220 else
3221 leaf_count = DEF_ADDRS_PER_BLOCK;
3222
aff063e2
JK		 3223 /* two direct node blocks */
3224 result += (leaf_count * 2);
3225
3226 /* two indirect node blocks */
3227 leaf_count *= NIDS_PER_BLOCK;
3228 result += (leaf_count * 2);
3229
3230 /* one double indirect node block */
3231 leaf_count *= NIDS_PER_BLOCK;
3232 result += leaf_count;
3233
aff063e2
JK		 3234 return result;
3235}
3236
fd694733
JK		 3237static int __f2fs_commit_super(struct buffer_head *bh,
3238 struct f2fs_super_block *super)
3239{
3240 lock_buffer(bh);
3241 if (super)
3242 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 3243 set_buffer_dirty(bh);
3244 unlock_buffer(bh);
3245
3246 /* it's rare case, we can do fua all the time */
3adc5fcb 3247 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 3248}
3249
df728b0f 3250static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 3251 struct buffer_head *bh)
9a59b62f 3252{
fd694733
JK		 3253 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3254 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 3255 struct super_block *sb = sbi->sb;
9a59b62f
CY		 3256 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
3257 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
3258 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
3259 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
3260 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
3261 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
3262 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
3263 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
3264 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
3265 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
3266 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
3267 u32 segment_count = le32_to_cpu(raw_super->segment_count);
3268 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 3269 u64 main_end_blkaddr = main_blkaddr +
3270 (segment_count_main << log_blocks_per_seg);
3271 u64 seg_end_blkaddr = segment0_blkaddr +
3272 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 3273
3274 if (segment0_blkaddr != cp_blkaddr) {
dcbb4c10
JP		 3275 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
3276 segment0_blkaddr, cp_blkaddr);
9a59b62f
CY		 3277 return true;
3278 }
3279
3280 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
3281 sit_blkaddr) {
dcbb4c10
JP		 3282 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
3283 cp_blkaddr, sit_blkaddr,
3284 segment_count_ckpt << log_blocks_per_seg);
9a59b62f
CY		 3285 return true;
3286 }
3287
3288 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
3289 nat_blkaddr) {
dcbb4c10
JP		 3290 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
3291 sit_blkaddr, nat_blkaddr,
3292 segment_count_sit << log_blocks_per_seg);
9a59b62f
CY		 3293 return true;
3294 }
3295
3296 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
3297 ssa_blkaddr) {
dcbb4c10
JP		 3298 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
3299 nat_blkaddr, ssa_blkaddr,
3300 segment_count_nat << log_blocks_per_seg);
9a59b62f
CY		 3301 return true;
3302 }
3303
3304 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
3305 main_blkaddr) {
dcbb4c10
JP		 3306 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
3307 ssa_blkaddr, main_blkaddr,
3308 segment_count_ssa << log_blocks_per_seg);
9a59b62f
CY		 3309 return true;
3310 }
3311
fd694733 3312 if (main_end_blkaddr > seg_end_blkaddr) {
d89f5891
WX		 3313 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)",
3314 main_blkaddr, seg_end_blkaddr,
dcbb4c10 3315 segment_count_main << log_blocks_per_seg);
9a59b62f 3316 return true;
fd694733
JK		 3317 } else if (main_end_blkaddr < seg_end_blkaddr) {
3318 int err = 0;
3319 char *res;
3320
3321 /* fix in-memory information all the time */
3322 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
3323 segment0_blkaddr) >> log_blocks_per_seg);
3324
68f0453d 3325 if (f2fs_readonly(sb) || f2fs_hw_is_readonly(sbi)) {
df728b0f 3326 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 3327 res = "internally";
3328 } else {
3329 err = __f2fs_commit_super(bh, NULL);
3330 res = err ? "failed" : "done";
3331 }
d89f5891
WX		 3332 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)",
3333 res, main_blkaddr, seg_end_blkaddr,
dcbb4c10 3334 segment_count_main << log_blocks_per_seg);
fd694733
JK		 3335 if (err)
3336 return true;
9a59b62f 3337 }
9a59b62f
CY		 3338 return false;
3339}
3340
df728b0f 3341static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 3342 struct buffer_head *bh)
aff063e2 3343{
f99ba9ad 3344 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main;
0cfe75c5 3345 block_t total_sections, blocks_per_seg;
fd694733
JK		 3346 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
3347 (bh->b_data + F2FS_SUPER_OFFSET);
d440c52d
JZ		 3348 size_t crc_offset = 0;
3349 __u32 crc = 0;
3350
38fb6d0e
IZ		 3351 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
3352 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
3353 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
3354 return -EINVAL;
3355 }
3356
d440c52d 3357 /* Check checksum_offset and crc in superblock */
7beb01f7 3358 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 3359 crc_offset = le32_to_cpu(raw_super->checksum_offset);
3360 if (crc_offset !=
3361 offsetof(struct f2fs_super_block, crc)) {
dcbb4c10
JP		 3362 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
3363 crc_offset);
38fb6d0e 3364 return -EFSCORRUPTED;
d440c52d
JZ		 3365 }
3366 crc = le32_to_cpu(raw_super->crc);
3367 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
dcbb4c10 3368 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
38fb6d0e 3369 return -EFSCORRUPTED;
d440c52d
JZ		 3370 }
3371 }
aff063e2 3372
aff063e2 3373 /* Currently, support only 4KB block size */
e584bbe8
CY		 3374 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) {
3375 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u",
3376 le32_to_cpu(raw_super->log_blocksize),
3377 F2FS_BLKSIZE_BITS);
38fb6d0e 3378 return -EFSCORRUPTED;
a07ef784 3379 }
5c9b4692 3380
9a59b62f
CY		 3381 /* check log blocks per segment */
3382 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
dcbb4c10
JP		 3383 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
3384 le32_to_cpu(raw_super->log_blocks_per_seg));
38fb6d0e 3385 return -EFSCORRUPTED;
9a59b62f
CY		 3386 }
3387
55cf9cb6
CY		 3388 /* Currently, support 512/1024/2048/4096 bytes sector size */
3389 if (le32_to_cpu(raw_super->log_sectorsize) >
3390 F2FS_MAX_LOG_SECTOR_SIZE ||
3391 le32_to_cpu(raw_super->log_sectorsize) <
3392 F2FS_MIN_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 3393 f2fs_info(sbi, "Invalid log sectorsize (%u)",
3394 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 3395 return -EFSCORRUPTED;
a07ef784 3396 }
55cf9cb6
CY		 3397 if (le32_to_cpu(raw_super->log_sectors_per_block) +
3398 le32_to_cpu(raw_super->log_sectorsize) !=
3399 F2FS_MAX_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 3400 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
3401 le32_to_cpu(raw_super->log_sectors_per_block),
3402 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 3403 return -EFSCORRUPTED;
a07ef784 3404 }
9a59b62f 3405
0cfe75c5 3406 segment_count = le32_to_cpu(raw_super->segment_count);
f99ba9ad 3407 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
0cfe75c5
JK		 3408 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3409 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3410 total_sections = le32_to_cpu(raw_super->section_count);
3411
3412 /* blocks_per_seg should be 512, given the above check */
447286eb 3413 blocks_per_seg = BIT(le32_to_cpu(raw_super->log_blocks_per_seg));
0cfe75c5
JK		 3414
3415 if (segment_count > F2FS_MAX_SEGMENT ||
3416 segment_count < F2FS_MIN_SEGMENTS) {
dcbb4c10 3417 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
38fb6d0e 3418 return -EFSCORRUPTED;
0cfe75c5
JK		 3419 }
3420
f99ba9ad 3421 if (total_sections > segment_count_main || total_sections < 1 ||
0cfe75c5 3422 segs_per_sec > segment_count || !segs_per_sec) {
dcbb4c10
JP		 3423 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
3424 segment_count, total_sections, segs_per_sec);
38fb6d0e 3425 return -EFSCORRUPTED;
0cfe75c5
JK		 3426 }
3427
3a22e9ac
CY		 3428 if (segment_count_main != total_sections * segs_per_sec) {
3429 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)",
3430 segment_count_main, total_sections, segs_per_sec);
3431 return -EFSCORRUPTED;
3432 }
3433
0cfe75c5 3434 if ((segment_count / segs_per_sec) < total_sections) {
dcbb4c10
JP		 3435 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
3436 segment_count, segs_per_sec, total_sections);
38fb6d0e 3437 return -EFSCORRUPTED;
0cfe75c5
JK		 3438 }
3439
88960068 3440 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
dcbb4c10
JP		 3441 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
3442 segment_count, le64_to_cpu(raw_super->block_count));
38fb6d0e 3443 return -EFSCORRUPTED;
0cfe75c5
JK		 3444 }
3445
9f701f6c
QS		 3446 if (RDEV(0).path[0]) {
3447 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
3448 int i = 1;
3449
3450 while (i < MAX_DEVICES && RDEV(i).path[0]) {
3451 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
3452 i++;
3453 }
3454 if (segment_count != dev_seg_count) {
3455 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
3456 segment_count, dev_seg_count);
3457 return -EFSCORRUPTED;
3458 }
07eb1d69
CY		 3459 } else {
3460 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) &&
3461 !bdev_is_zoned(sbi->sb->s_bdev)) {
3462 f2fs_info(sbi, "Zoned block device path is missing");
3463 return -EFSCORRUPTED;
3464 }
9f701f6c
QS		 3465 }
3466
42bf546c 3467 if (secs_per_zone > total_sections || !secs_per_zone) {
dcbb4c10
JP		 3468 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
3469 secs_per_zone, total_sections);
38fb6d0e 3470 return -EFSCORRUPTED;
0cfe75c5
JK		 3471 }
3472 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
3473 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
3474 (le32_to_cpu(raw_super->extension_count) +
3475 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
dcbb4c10
JP		 3476 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
3477 le32_to_cpu(raw_super->extension_count),
3478 raw_super->hot_ext_count,
3479 F2FS_MAX_EXTENSION);
38fb6d0e 3480 return -EFSCORRUPTED;
0cfe75c5
JK		 3481 }
3482
65ddf656
CY		 3483 if (le32_to_cpu(raw_super->cp_payload) >=
3484 (blocks_per_seg - F2FS_CP_PACKS -
3485 NR_CURSEG_PERSIST_TYPE)) {
3486 f2fs_info(sbi, "Insane cp_payload (%u >= %u)",
dcbb4c10 3487 le32_to_cpu(raw_super->cp_payload),
65ddf656
CY		 3488 blocks_per_seg - F2FS_CP_PACKS -
3489 NR_CURSEG_PERSIST_TYPE);
38fb6d0e 3490 return -EFSCORRUPTED;
0cfe75c5
JK		 3491 }
3492
9a59b62f
CY		 3493 /* check reserved ino info */
3494 if (le32_to_cpu(raw_super->node_ino) != 1 ||
3495 le32_to_cpu(raw_super->meta_ino) != 2 ||
3496 le32_to_cpu(raw_super->root_ino) != 3) {
dcbb4c10
JP		 3497 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
3498 le32_to_cpu(raw_super->node_ino),
3499 le32_to_cpu(raw_super->meta_ino),
3500 le32_to_cpu(raw_super->root_ino));
38fb6d0e 3501 return -EFSCORRUPTED;
9a59b62f
CY		 3502 }
3503
3504 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 3505 if (sanity_check_area_boundary(sbi, bh))
38fb6d0e 3506 return -EFSCORRUPTED;
9a59b62f 3507
aff063e2
JK		 3508 return 0;
3509}
3510
4d57b86d 3511int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 3512{
3513 unsigned int total, fsmeta;
577e3495
JK		 3514 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3515 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 3516 unsigned int ovp_segments, reserved_segments;
15d3042a 3517 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 3518 unsigned int sit_segs, nat_segs;
3519 unsigned int sit_bitmap_size, nat_bitmap_size;
3520 unsigned int log_blocks_per_seg;
9dc956b2 3521 unsigned int segment_count_main;
e494c2f9 3522 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 3523 block_t user_block_count, valid_user_blocks;
3524 block_t avail_node_count, valid_node_count;
65ddf656 3525 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks;
042be0f8 3526 int i, j;
aff063e2
JK		 3527
3528 total = le32_to_cpu(raw_super->segment_count);
3529 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 3530 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
3531 fsmeta += sit_segs;
3532 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
3533 fsmeta += nat_segs;
aff063e2
JK		 3534 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
3535 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
3536
6bacf52f 3537 if (unlikely(fsmeta >= total))
aff063e2 3538 return 1;
577e3495 3539
2040fce8
JK		 3540 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
3541 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
3542
a7d9fe3c
JK		 3543 if (!f2fs_sb_has_readonly(sbi) &&
3544 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
2040fce8 3545 ovp_segments == 0 || reserved_segments == 0)) {
dcbb4c10 3546 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2040fce8
JK		 3547 return 1;
3548 }
9dc956b2 3549 user_block_count = le64_to_cpu(ckpt->user_block_count);
a7d9fe3c
JK		 3550 segment_count_main = le32_to_cpu(raw_super->segment_count_main) +
3551 (f2fs_sb_has_readonly(sbi) ? 1 : 0);
9dc956b2
CY		 3552 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3553 if (!user_block_count || user_block_count >=
3554 segment_count_main << log_blocks_per_seg) {
dcbb4c10
JP		 3555 f2fs_err(sbi, "Wrong user_block_count: %u",
3556 user_block_count);
9dc956b2
CY		 3557 return 1;
3558 }
3559
7b63f72f
CY		 3560 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
3561 if (valid_user_blocks > user_block_count) {
dcbb4c10
JP		 3562 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
3563 valid_user_blocks, user_block_count);
7b63f72f
CY		 3564 return 1;
3565 }
3566
3567 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
27cae0bc 3568 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
7b63f72f 3569 if (valid_node_count > avail_node_count) {
dcbb4c10
JP		 3570 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
3571 valid_node_count, avail_node_count);
7b63f72f
CY		 3572 return 1;
3573 }
3574
15d3042a
JQ		 3575 main_segs = le32_to_cpu(raw_super->segment_count_main);
3576 blocks_per_seg = sbi->blocks_per_seg;
3577
3578 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
3579 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
3580 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
3581 return 1;
a7d9fe3c
JK		 3582
3583 if (f2fs_sb_has_readonly(sbi))
3584 goto check_data;
3585
042be0f8
CY		 3586 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
3587 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3588 le32_to_cpu(ckpt->cur_node_segno[j])) {
dcbb4c10
JP		 3589 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
3590 i, j,
3591 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 3592 return 1;
3593 }
3594 }
15d3042a 3595 }
a7d9fe3c 3596check_data:
15d3042a
JQ		 3597 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
3598 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
3599 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
3600 return 1;
a7d9fe3c
JK		 3601
3602 if (f2fs_sb_has_readonly(sbi))
3603 goto skip_cross;
3604
042be0f8
CY		 3605 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
3606 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
3607 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 3608 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
3609 i, j,
3610 le32_to_cpu(ckpt->cur_data_segno[i]));
042be0f8
CY		 3611 return 1;
3612 }
3613 }
3614 }
3615 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1166c1f2 3616 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
042be0f8
CY		 3617 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
3618 le32_to_cpu(ckpt->cur_data_segno[j])) {
1166c1f2 3619 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
dcbb4c10
JP		 3620 i, j,
3621 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 3622 return 1;
3623 }
3624 }
15d3042a 3625 }
a7d9fe3c 3626skip_cross:
c77ec61c
CY		 3627 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
3628 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 3629
3630 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
3631 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
dcbb4c10
JP		 3632 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
3633 sit_bitmap_size, nat_bitmap_size);
c77ec61c
CY		 3634 return 1;
3635 }
e494c2f9
CY		 3636
3637 cp_pack_start_sum = __start_sum_addr(sbi);
3638 cp_payload = __cp_payload(sbi);
3639 if (cp_pack_start_sum < cp_payload + 1 ||
3640 cp_pack_start_sum > blocks_per_seg - 1 -
d0b9e42a 3641 NR_CURSEG_PERSIST_TYPE) {
dcbb4c10
JP		 3642 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
3643 cp_pack_start_sum);
e494c2f9
CY		 3644 return 1;
3645 }
c77ec61c 3646
5dae2d39
CY		 3647 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
3648 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2d008835
CY		 3649 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
3650 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
3651 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
dcbb4c10 3652 le32_to_cpu(ckpt->checksum_offset));
5dae2d39
CY		 3653 return 1;
3654 }
3655
65ddf656
CY		 3656 nat_blocks = nat_segs << log_blocks_per_seg;
3657 nat_bits_bytes = nat_blocks / BITS_PER_BYTE;
3658 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
3659 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) &&
3660 (cp_payload + F2FS_CP_PACKS +
3661 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) {
3662 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)",
3663 cp_payload, nat_bits_blocks);
ca98d721 3664 return 1;
65ddf656
CY		 3665 }
3666
1e968fdf 3667 if (unlikely(f2fs_cp_error(sbi))) {
dcbb4c10 3668 f2fs_err(sbi, "A bug case: need to run fsck");
577e3495
JK		 3669 return 1;
3670 }
aff063e2
JK		 3671 return 0;
3672}
3673
3674static void init_sb_info(struct f2fs_sb_info *sbi)
3675{
3676 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 3677 int i;
aff063e2
JK		 3678
3679 sbi->log_sectors_per_block =
3680 le32_to_cpu(raw_super->log_sectors_per_block);
3681 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
447286eb 3682 sbi->blocksize = BIT(sbi->log_blocksize);
aff063e2 3683 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
447286eb 3684 sbi->blocks_per_seg = BIT(sbi->log_blocks_per_seg);
aff063e2
JK		 3685 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3686 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3687 sbi->total_sections = le32_to_cpu(raw_super->section_count);
3688 sbi->total_node_count =
3689 (le32_to_cpu(raw_super->segment_count_nat) / 2)
3690 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
b9ec1094
YL		 3691 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino);
3692 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino);
3693 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 3694 sbi->cur_victim_sec = NULL_SECNO;
c86868bb 3695 sbi->gc_mode = GC_NORMAL;
e3080b01
CY		 3696 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
3697 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 3698 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 3699 sbi->migration_granularity = sbi->segs_per_sec;
0f6b56ec 3700 sbi->seq_file_ra_mul = MIN_RA_MUL;
6691d940
DJ		 3701 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE;
3702 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE;
e5a0db6a 3703 spin_lock_init(&sbi->gc_remaining_trials_lock);
f8e2f32b 3704 atomic64_set(&sbi->current_atomic_write, 0);
aff063e2 3705
ab9fa662 3706 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 3707 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 3708 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 3709 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
3710 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 3711 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 3712 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
3713 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 3714 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 3715
35782b23
JK		 3716 for (i = 0; i < NR_COUNT_TYPE; i++)
3717 atomic_set(&sbi->nr_pages[i], 0);
3718
c29fd0c0
CY		 3719 for (i = 0; i < META; i++)
3720 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 3721
2658e50d
JK		 3722 INIT_LIST_HEAD(&sbi->s_list);
3723 mutex_init(&sbi->umount_mutex);
e4544b63 3724 init_f2fs_rwsem(&sbi->io_order_lock);
aaec2b1d 3725 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 3726
3727 sbi->dirty_device = 0;
3728 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 3729
e4544b63
TM		 3730 init_f2fs_rwsem(&sbi->sb_lock);
3731 init_f2fs_rwsem(&sbi->pin_sem);
aff063e2
JK		 3732}
3733
523be8a6
JK		 3734static int init_percpu_info(struct f2fs_sb_info *sbi)
3735{
35782b23 3736 int err;
41382ec4 3737
513c5f37
JK		 3738 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
3739 if (err)
3740 return err;
3741
47c8ebcc
JK		 3742 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL);
3743 if (err)
3744 goto err_valid_block;
3745
4a70e255 3746 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 3747 GFP_KERNEL);
4a70e255 3748 if (err)
47c8ebcc
JK		 3749 goto err_node_block;
3750 return 0;
4a70e255 3751
47c8ebcc
JK		 3752err_node_block:
3753 percpu_counter_destroy(&sbi->rf_node_block_count);
3754err_valid_block:
3755 percpu_counter_destroy(&sbi->alloc_valid_block_count);
4a70e255 3756 return err;
523be8a6
JK		 3757}
3758
178053e2 3759#ifdef CONFIG_BLK_DEV_ZONED
de881df9
AR		 3760
3761struct f2fs_report_zones_args {
b771aadc 3762 struct f2fs_sb_info *sbi;
de881df9 3763 struct f2fs_dev_info *dev;
de881df9
AR		 3764};
3765
d4100351 3766static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
de881df9 3767 void *data)
d4100351 3768{
de881df9 3769 struct f2fs_report_zones_args *rz_args = data;
b771aadc
JK		 3770 block_t unusable_blocks = (zone->len - zone->capacity) >>
3771 F2FS_LOG_SECTORS_PER_BLOCK;
de881df9
AR		 3772
3773 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
3774 return 0;
3775
3776 set_bit(idx, rz_args->dev->blkz_seq);
b771aadc
JK		 3777 if (!rz_args->sbi->unusable_blocks_per_sec) {
3778 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks;
3779 return 0;
3780 }
3781 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) {
3782 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n");
3783 return -EINVAL;
3784 }
d4100351
CH		 3785 return 0;
3786}
3787
3c62be17 3788static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 3789{
3c62be17 3790 struct block_device *bdev = FDEV(devi).bdev;
a782483c 3791 sector_t nr_sectors = bdev_nr_sectors(bdev);
de881df9 3792 struct f2fs_report_zones_args rep_zone_arg;
d46db459 3793 u64 zone_sectors;
d4100351 3794 int ret;
178053e2 3795
7beb01f7 3796 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 3797 return 0;
3798
d46db459 3799 zone_sectors = bdev_zone_sectors(bdev);
7f262f73
LC		 3800 if (!is_power_of_2(zone_sectors)) {
3801 f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n");
3802 return -EINVAL;
3803 }
d46db459 3804
3c62be17 3805 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
d46db459 3806 SECTOR_TO_BLOCK(zone_sectors))
3c62be17 3807 return -EINVAL;
d46db459 3808 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors);
3c62be17
JK		 3809 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3810 __ilog2_u32(sbi->blocks_per_blkz))
3811 return -EINVAL;
178053e2 3812 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 3813 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3814 sbi->log_blocks_per_blkz;
d46db459 3815 if (nr_sectors & (zone_sectors - 1))
3c62be17 3816 FDEV(devi).nr_blkz++;
178053e2 3817
0b6d4ca0 3818 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
95175daf
DLM		 3819 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3820 * sizeof(unsigned long),
3821 GFP_KERNEL);
3822 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 3823 return -ENOMEM;
3824
b771aadc 3825 rep_zone_arg.sbi = sbi;
de881df9 3826 rep_zone_arg.dev = &FDEV(devi);
de881df9 3827
d4100351 3828 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
de881df9 3829 &rep_zone_arg);
d4100351
CH		 3830 if (ret < 0)
3831 return ret;
d4100351 3832 return 0;
178053e2
DLM		 3833}
3834#endif
3835
9076a75f
GZ		 3836/*
3837 * Read f2fs raw super block.
2b39e907
SL		 3838 * Because we have two copies of super block, so read both of them
3839 * to get the first valid one. If any one of them is broken, we pass
3840 * them recovery flag back to the caller.
9076a75f 3841 */
df728b0f 3842static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 3843 struct f2fs_super_block **raw_super,
e8240f65 3844 int *valid_super_block, int *recovery)
14d7e9de 3845{
df728b0f 3846 struct super_block *sb = sbi->sb;
2b39e907 3847 int block;
e8240f65 3848 struct buffer_head *bh;
fd694733 3849 struct f2fs_super_block *super;
da554e48 3850 int err = 0;
14d7e9de 3851
b39f0de2
YH		 3852 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3853 if (!super)
3854 return -ENOMEM;
2b39e907
SL		 3855
3856 for (block = 0; block < 2; block++) {
3857 bh = sb_bread(sb, block);
3858 if (!bh) {
dcbb4c10
JP		 3859 f2fs_err(sbi, "Unable to read %dth superblock",
3860 block + 1);
2b39e907 3861 err = -EIO;
ed352042 3862 *recovery = 1;
2b39e907
SL		 3863 continue;
3864 }
14d7e9de 3865
2b39e907 3866 /* sanity checking of raw super */
38fb6d0e
IZ		 3867 err = sanity_check_raw_super(sbi, bh);
3868 if (err) {
dcbb4c10
JP		 3869 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3870 block + 1);
2b39e907 3871 brelse(bh);
ed352042 3872 *recovery = 1;
2b39e907
SL		 3873 continue;
3874 }
14d7e9de 3875
2b39e907 3876 if (!*raw_super) {
fd694733
JK		 3877 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3878 sizeof(*super));
2b39e907
SL		 3879 *valid_super_block = block;
3880 *raw_super = super;
3881 }
3882 brelse(bh);
da554e48 3883 }
3884
da554e48 3885 /* No valid superblock */
2b39e907 3886 if (!*raw_super)
742532d1 3887 kfree(super);
2b39e907
SL		 3888 else
3889 err = 0;
da554e48 3890
2b39e907 3891 return err;
14d7e9de 3892}
3893
fd694733 3894int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 3895{
5d909cdb 3896 struct buffer_head *bh;
d440c52d 3897 __u32 crc = 0;
26d815ad
JK		 3898 int err;
3899
df728b0f 3900 if ((recover && f2fs_readonly(sbi->sb)) ||
68f0453d 3901 f2fs_hw_is_readonly(sbi)) {
df728b0f 3902 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 3903 return -EROFS;
df728b0f 3904 }
f2353d7b 3905
d440c52d 3906 /* we should update superblock crc here */
7beb01f7 3907 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 3908 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3909 offsetof(struct f2fs_super_block, crc));
3910 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3911 }
3912
fd694733 3913 /* write back-up superblock first */
0964fc1a 3914 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 3915 if (!bh)
3916 return -EIO;
fd694733 3917 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 3918 brelse(bh);
c5bda1c8
CY		 3919
3920 /* if we are in recovery path, skip writing valid superblock */
3921 if (recover || err)
5d909cdb 3922 return err;
26d815ad
JK		 3923
3924 /* write current valid superblock */
0964fc1a 3925 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 3926 if (!bh)
3927 return -EIO;
3928 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3929 brelse(bh);
3930 return err;
26d815ad
JK		 3931}
3932
a9cfee0e
CY		 3933void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason)
3934{
3935 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
3936 int err;
3937
a9cfee0e
CY		 3938 f2fs_down_write(&sbi->sb_lock);
3939
447286eb 3940 if (raw_super->s_stop_reason[reason] < GENMASK(BITS_PER_BYTE - 1, 0))
a9cfee0e
CY		 3941 raw_super->s_stop_reason[reason]++;
3942
3943 err = f2fs_commit_super(sbi, false);
3944 if (err)
3945 f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d",
3946 reason, err);
95fa90c9
CY		 3947 f2fs_up_write(&sbi->sb_lock);
3948}
3949
1aa161e4 3950void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag)
95fa90c9
CY		 3951{
3952 spin_lock(&sbi->error_lock);
3953 if (!test_bit(flag, (unsigned long *)sbi->errors)) {
3954 set_bit(flag, (unsigned long *)sbi->errors);
3955 sbi->error_dirty = true;
3956 }
3957 spin_unlock(&sbi->error_lock);
3958}
3959
3960static bool f2fs_update_errors(struct f2fs_sb_info *sbi)
3961{
3962 bool need_update = false;
3963
3964 spin_lock(&sbi->error_lock);
3965 if (sbi->error_dirty) {
3966 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors,
3967 MAX_F2FS_ERRORS);
3968 sbi->error_dirty = false;
3969 need_update = true;
3970 }
3971 spin_unlock(&sbi->error_lock);
3972
3973 return need_update;
3974}
a9cfee0e 3975
95fa90c9
CY		 3976void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error)
3977{
3978 int err;
3979
3980 f2fs_save_errors(sbi, error);
3981
3982 f2fs_down_write(&sbi->sb_lock);
3983
3984 if (!f2fs_update_errors(sbi))
3985 goto out_unlock;
3986
3987 err = f2fs_commit_super(sbi, false);
3988 if (err)
3989 f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d",
3990 error, err);
3991out_unlock:
a9cfee0e
CY		 3992 f2fs_up_write(&sbi->sb_lock);
3993}
3994
3c62be17
JK		 3995static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3996{
3997 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 3998 unsigned int max_devices = MAX_DEVICES;
71f2c820 3999 unsigned int logical_blksize;
3c62be17
JK		 4000 int i;
4001
7bb3a371
MS		 4002 /* Initialize single device information */
4003 if (!RDEV(0).path[0]) {
4004 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 4005 return 0;
7bb3a371
MS		 4006 max_devices = 1;
4007 }
3c62be17 4008
7bb3a371
MS		 4009 /*
4010 * Initialize multiple devices information, or single
4011 * zoned block device information.
4012 */
026f0507
KC		 4013 sbi->devs = f2fs_kzalloc(sbi,
4014 array_size(max_devices,
4015 sizeof(struct f2fs_dev_info)),
4016 GFP_KERNEL);
7bb3a371
MS		 4017 if (!sbi->devs)
4018 return -ENOMEM;
3c62be17 4019
71f2c820
CY		 4020 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev);
4021 sbi->aligned_blksize = true;
4022
7bb3a371 4023 for (i = 0; i < max_devices; i++) {
3c62be17 4024
7bb3a371
MS		 4025 if (i > 0 && !RDEV(i).path[0])
4026 break;
4027
4028 if (max_devices == 1) {
4029 /* Single zoned block device mount */
4030 FDEV(0).bdev =
4031 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 4032 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 4033 } else {
4034 /* Multi-device mount */
4035 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
4036 FDEV(i).total_segments =
4037 le32_to_cpu(RDEV(i).total_segments);
4038 if (i == 0) {
4039 FDEV(i).start_blk = 0;
4040 FDEV(i).end_blk = FDEV(i).start_blk +
4041 (FDEV(i).total_segments <<
4042 sbi->log_blocks_per_seg) - 1 +
4043 le32_to_cpu(raw_super->segment0_blkaddr);
4044 } else {
4045 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
4046 FDEV(i).end_blk = FDEV(i).start_blk +
4047 (FDEV(i).total_segments <<
4048 sbi->log_blocks_per_seg) - 1;
4049 }
4050 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 4051 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 4052 }
3c62be17
JK		 4053 if (IS_ERR(FDEV(i).bdev))
4054 return PTR_ERR(FDEV(i).bdev);
4055
4056 /* to release errored devices */
4057 sbi->s_ndevs = i + 1;
4058
71f2c820
CY		 4059 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev))
4060 sbi->aligned_blksize = false;
4061
3c62be17
JK		 4062#ifdef CONFIG_BLK_DEV_ZONED
4063 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 4064 !f2fs_sb_has_blkzoned(sbi)) {
833dcd35 4065 f2fs_err(sbi, "Zoned block device feature not enabled");
3c62be17
JK		 4066 return -EINVAL;
4067 }
4068 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
4069 if (init_blkz_info(sbi, i)) {
dcbb4c10 4070 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3c62be17
JK		 4071 return -EINVAL;
4072 }
7bb3a371
MS		 4073 if (max_devices == 1)
4074 break;
dcbb4c10
JP		 4075 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
4076 i, FDEV(i).path,
4077 FDEV(i).total_segments,
4078 FDEV(i).start_blk, FDEV(i).end_blk,
4079 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
4080 "Host-aware" : "Host-managed");
3c62be17
JK		 4081 continue;
4082 }
4083#endif
dcbb4c10
JP		 4084 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
4085 i, FDEV(i).path,
4086 FDEV(i).total_segments,
4087 FDEV(i).start_blk, FDEV(i).end_blk);
4088 }
4089 f2fs_info(sbi,
447286eb 4090 "IO Block Size: %8ld KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 4091 return 0;
4092}
4093
5aba5430
DR		 4094static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
4095{
5298d4bf 4096#if IS_ENABLED(CONFIG_UNICODE)
eca4873e 4097 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) {
5aba5430
DR		 4098 const struct f2fs_sb_encodings *encoding_info;
4099 struct unicode_map *encoding;
4100 __u16 encoding_flags;
4101
86e80575
CH		 4102 encoding_info = f2fs_sb_read_encoding(sbi->raw_super);
4103 if (!encoding_info) {
5aba5430
DR		 4104 f2fs_err(sbi,
4105 "Encoding requested by superblock is unknown");
4106 return -EINVAL;
4107 }
4108
86e80575 4109 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags);
5aba5430
DR		 4110 encoding = utf8_load(encoding_info->version);
4111 if (IS_ERR(encoding)) {
4112 f2fs_err(sbi,
49bd03cc 4113 "can't mount with superblock charset: %s-%u.%u.%u "
5aba5430 4114 "not supported by the kernel. flags: 0x%x.",
49bd03cc
CH		 4115 encoding_info->name,
4116 unicode_major(encoding_info->version),
4117 unicode_minor(encoding_info->version),
4118 unicode_rev(encoding_info->version),
5aba5430
DR		 4119 encoding_flags);
4120 return PTR_ERR(encoding);
4121 }
4122 f2fs_info(sbi, "Using encoding defined by superblock: "
49bd03cc
CH		 4123 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name,
4124 unicode_major(encoding_info->version),
4125 unicode_minor(encoding_info->version),
4126 unicode_rev(encoding_info->version),
4127 encoding_flags);
5aba5430 4128
eca4873e
DR		 4129 sbi->sb->s_encoding = encoding;
4130 sbi->sb->s_encoding_flags = encoding_flags;
5aba5430
DR		 4131 }
4132#else
4133 if (f2fs_sb_has_casefold(sbi)) {
4134 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
4135 return -EINVAL;
4136 }
4137#endif
4138 return 0;
4139}
4140
84b89e5d
JK		 4141static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
4142{
84b89e5d 4143 /* adjust parameters according to the volume size */
777cd95b 4144 if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) {
4f993264 4145 if (f2fs_block_unit_discard(sbi))
1cd2e6d5
YL		 4146 SM_I(sbi)->dcc_info->discard_granularity =
4147 MIN_DISCARD_GRANULARITY;
c5bf8348
YL		 4148 if (!f2fs_lfs_mode(sbi))
4149 SM_I(sbi)->ipu_policy = BIT(F2FS_IPU_FORCE) |
4150 BIT(F2FS_IPU_HONOR_OPU_WRITE);
84b89e5d 4151 }
4cac90d5 4152
66aee5aa 4153 sbi->readdir_ra = true;
84b89e5d
JK		 4154}
4155
aff063e2
JK		 4156static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
4157{
4158 struct f2fs_sb_info *sbi;
da554e48 4159 struct f2fs_super_block *raw_super;
aff063e2 4160 struct inode *root;
99e3e858 4161 int err;
aa2c8c43 4162 bool skip_recovery = false, need_fsck = false;
dabc4a5c 4163 char *options = NULL;
e8240f65 4164 int recovery, i, valid_super_block;
8f1dbbbb 4165 struct curseg_info *seg_i;
aa2c8c43 4166 int retry_cnt = 1;
e1bb7d3d
CY		 4167#ifdef CONFIG_QUOTA
4168 bool quota_enabled = false;
4169#endif
aff063e2 4170
ed2e621a 4171try_onemore:
da554e48 4172 err = -EINVAL;
4173 raw_super = NULL;
e8240f65 4174 valid_super_block = -1;
da554e48 4175 recovery = 0;
4176
aff063e2
JK		 4177 /* allocate memory for f2fs-specific super block info */
4178 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
4179 if (!sbi)
4180 return -ENOMEM;
4181
df728b0f
JK		 4182 sbi->sb = sb;
4183
92b4cf5b
TH		 4184 /* initialize locks within allocated memory */
4185 init_f2fs_rwsem(&sbi->gc_lock);
4186 mutex_init(&sbi->writepages);
4187 init_f2fs_rwsem(&sbi->cp_global_sem);
4188 init_f2fs_rwsem(&sbi->node_write);
4189 init_f2fs_rwsem(&sbi->node_change);
4190 spin_lock_init(&sbi->stat_lock);
4191 init_f2fs_rwsem(&sbi->cp_rwsem);
4192 init_f2fs_rwsem(&sbi->quota_sem);
4193 init_waitqueue_head(&sbi->cp_wait);
4194 spin_lock_init(&sbi->error_lock);
4195
4196 for (i = 0; i < NR_INODE_TYPE; i++) {
4197 INIT_LIST_HEAD(&sbi->inode_list[i]);
4198 spin_lock_init(&sbi->inode_lock[i]);
4199 }
4200 mutex_init(&sbi->flush_lock);
4201
43b6573b
KM		 4202 /* Load the checksum driver */
4203 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
4204 if (IS_ERR(sbi->s_chksum_driver)) {
dcbb4c10 4205 f2fs_err(sbi, "Cannot load crc32 driver.");
43b6573b
KM		 4206 err = PTR_ERR(sbi->s_chksum_driver);
4207 sbi->s_chksum_driver = NULL;
4208 goto free_sbi;
4209 }
4210
ff9234ad 4211 /* set a block size */
6bacf52f 4212 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
dcbb4c10 4213 f2fs_err(sbi, "unable to set blocksize");
aff063e2 4214 goto free_sbi;
a07ef784 4215 }
aff063e2 4216
df728b0f 4217 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 4218 &recovery);
9076a75f
GZ		 4219 if (err)
4220 goto free_sbi;
4221
5fb08372 4222 sb->s_fs_info = sbi;
52763a4b
JK		 4223 sbi->raw_super = raw_super;
4224
92b4cf5b
TH		 4225 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS);
4226
704956ec 4227 /* precompute checksum seed for metadata */
7beb01f7 4228 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 4229 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
4230 sizeof(raw_super->uuid));
4231
498c5e9f 4232 default_options(sbi);
aff063e2 4233 /* parse mount options */
dabc4a5c
JK		 4234 options = kstrdup((const char *)data, GFP_KERNEL);
4235 if (data && !options) {
4236 err = -ENOMEM;
aff063e2 4237 goto free_sb_buf;
dabc4a5c
JK		 4238 }
4239
ed318a6c 4240 err = parse_options(sb, options, false);
dabc4a5c
JK		 4241 if (err)
4242 goto free_options;
aff063e2 4243
6d1451bf 4244 sb->s_maxbytes = max_file_blocks(NULL) <<
e0afc4d6 4245 le32_to_cpu(raw_super->log_blocksize);
aff063e2 4246 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 4247
5aba5430
DR		 4248 err = f2fs_setup_casefold(sbi);
4249 if (err)
4250 goto free_options;
4251
0abd675e
CY		 4252#ifdef CONFIG_QUOTA
4253 sb->dq_op = &f2fs_quota_operations;
bc88ac96 4254 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 4255 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 4256
7beb01f7 4257 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 4258 for (i = 0; i < MAXQUOTAS; i++) {
4259 if (f2fs_qf_ino(sbi->sb, i))
4260 sbi->nquota_files++;
4261 }
4262 }
0abd675e
CY		 4263#endif
4264
aff063e2 4265 sb->s_op = &f2fs_sops;
643fa961 4266#ifdef CONFIG_FS_ENCRYPTION
0b81d077 4267 sb->s_cop = &f2fs_cryptops;
95ae251f
EB		 4268#endif
4269#ifdef CONFIG_FS_VERITY
4270 sb->s_vop = &f2fs_verityops;
ffcc4182 4271#endif
aff063e2
JK		 4272 sb->s_xattr = f2fs_xattr_handlers;
4273 sb->s_export_op = &f2fs_export_ops;
4274 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 4275 sb->s_time_gran = 1;
1751e8a6
LT		 4276 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
4277 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 4278 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 4279 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 4280
4281 /* init f2fs-specific super block info */
e8240f65 4282 sbi->valid_super_block = valid_super_block;
315df839
JK		 4283
4284 /* disallow all the data/node/meta page writes */
4285 set_sbi_flag(sbi, SBI_POR_DOING);
971767ca 4286
908ea654
YY		 4287 err = f2fs_init_write_merge_io(sbi);
4288 if (err)
4289 goto free_bio_info;
971767ca 4290
aff063e2
JK		 4291 init_sb_info(sbi);
4292
52118743 4293 err = f2fs_init_iostat(sbi);
523be8a6 4294 if (err)
d7997e63 4295 goto free_bio_info;
523be8a6 4296
523be8a6
JK		 4297 err = init_percpu_info(sbi);
4298 if (err)
a4b68176 4299 goto free_iostat;
523be8a6 4300
c72db71e 4301 if (F2FS_IO_ALIGNED(sbi)) {
0a595eba 4302 sbi->write_io_dummy =
a3ebfe4f 4303 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 4304 if (!sbi->write_io_dummy) {
4305 err = -ENOMEM;
d7997e63 4306 goto free_percpu;
1727f317 4307 }
0a595eba
JK		 4308 }
4309
a999150f
CY		 4310 /* init per sbi slab cache */
4311 err = f2fs_init_xattr_caches(sbi);
4312 if (err)
4313 goto free_io_dummy;
31083031
CY		 4314 err = f2fs_init_page_array_cache(sbi);
4315 if (err)
4316 goto free_xattr_cache;
a999150f 4317
aff063e2
JK		 4318 /* get an inode for meta space */
4319 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
4320 if (IS_ERR(sbi->meta_inode)) {
dcbb4c10 4321 f2fs_err(sbi, "Failed to read F2FS meta data inode");
aff063e2 4322 err = PTR_ERR(sbi->meta_inode);
31083031 4323 goto free_page_array_cache;
aff063e2
JK		 4324 }
4325
4d57b86d 4326 err = f2fs_get_valid_checkpoint(sbi);
a07ef784 4327 if (err) {
dcbb4c10 4328 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
aff063e2 4329 goto free_meta_inode;
a07ef784 4330 }
aff063e2 4331
af033b2a
CY		 4332 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
4333 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 4334 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
4335 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
4336 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
4337 }
af033b2a 4338
04f0b2ea
QS		 4339 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
4340 set_sbi_flag(sbi, SBI_NEED_FSCK);
4341
3c62be17
JK		 4342 /* Initialize device list */
4343 err = f2fs_scan_devices(sbi);
4344 if (err) {
dcbb4c10 4345 f2fs_err(sbi, "Failed to find devices");
3c62be17
JK		 4346 goto free_devices;
4347 }
4348
4c8ff709
CY		 4349 err = f2fs_init_post_read_wq(sbi);
4350 if (err) {
4351 f2fs_err(sbi, "Failed to initialize post read workqueue");
4352 goto free_devices;
4353 }
4354
aff063e2
JK		 4355 sbi->total_valid_node_count =
4356 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 4357 percpu_counter_set(&sbi->total_valid_inode_count,
4358 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 4359 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
4360 sbi->total_valid_block_count =
4361 le64_to_cpu(sbi->ckpt->valid_block_count);
4362 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 4363 sbi->reserved_blocks = 0;
80d42145 4364 sbi->current_reserved_blocks = 0;
7e65be49 4365 limit_reserve_root(sbi);
1ae18f71 4366 adjust_unusable_cap_perc(sbi);
41382ec4 4367
4d57b86d 4368 f2fs_init_extent_cache_info(sbi);
1dcc336b 4369
4d57b86d 4370 f2fs_init_ino_entry_info(sbi);
aff063e2 4371
50fa53ec
CY		 4372 f2fs_init_fsync_node_info(sbi);
4373
261eeb9c
DJ		 4374 /* setup checkpoint request control and start checkpoint issue thread */
4375 f2fs_init_ckpt_req_control(sbi);
3f7070b0 4376 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
261eeb9c
DJ		 4377 test_opt(sbi, MERGE_CHECKPOINT)) {
4378 err = f2fs_start_ckpt_thread(sbi);
4379 if (err) {
4380 f2fs_err(sbi,
4381 "Failed to start F2FS issue_checkpoint_thread (%d)",
4382 err);
4383 goto stop_ckpt_thread;
4384 }
4385 }
4386
aff063e2 4387 /* setup f2fs internal modules */
4d57b86d 4388 err = f2fs_build_segment_manager(sbi);
a07ef784 4389 if (err) {
dcbb4c10
JP		 4390 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
4391 err);
aff063e2 4392 goto free_sm;
a07ef784 4393 }
4d57b86d 4394 err = f2fs_build_node_manager(sbi);
a07ef784 4395 if (err) {
dcbb4c10
JP		 4396 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
4397 err);
aff063e2 4398 goto free_nm;
a07ef784 4399 }
aff063e2 4400
300a8429
CY		 4401 err = adjust_reserved_segment(sbi);
4402 if (err)
4403 goto free_nm;
4404
8f1dbbbb 4405 /* For write statistics */
3a0a9cbc 4406 sbi->sectors_written_start = f2fs_get_sectors_written(sbi);
8f1dbbbb
SL		 4407
4408 /* Read accumulated write IO statistics if exists */
4409 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
4410 if (__exist_node_summaries(sbi))
4411 sbi->kbytes_written =
b2dde6fc 4412 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 4413
4d57b86d 4414 f2fs_build_gc_manager(sbi);
aff063e2 4415
60aa4d55
ST		 4416 err = f2fs_build_stats(sbi);
4417 if (err)
4418 goto free_nm;
4419
aff063e2
JK		 4420 /* get an inode for node space */
4421 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
4422 if (IS_ERR(sbi->node_inode)) {
dcbb4c10 4423 f2fs_err(sbi, "Failed to read node inode");
aff063e2 4424 err = PTR_ERR(sbi->node_inode);
60aa4d55 4425 goto free_stats;
aff063e2
JK		 4426 }
4427
aff063e2
JK		 4428 /* read root inode and dentry */
4429 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
4430 if (IS_ERR(root)) {
dcbb4c10 4431 f2fs_err(sbi, "Failed to read root inode");
aff063e2 4432 err = PTR_ERR(root);
60aa4d55 4433 goto free_node_inode;
aff063e2 4434 }
bcbfbd60
CY		 4435 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
4436 !root->i_size || !root->i_nlink) {
9d847950 4437 iput(root);
8f99a946 4438 err = -EINVAL;
60aa4d55 4439 goto free_node_inode;
8f99a946 4440 }
aff063e2
JK		 4441
4442 sb->s_root = d_make_root(root); /* allocate root dentry */
4443 if (!sb->s_root) {
4444 err = -ENOMEM;
025cdb16 4445 goto free_node_inode;
aff063e2
JK		 4446 }
4447
6ce19aff 4448 err = f2fs_init_compress_inode(sbi);
b59d0bae 4449 if (err)
a398101a 4450 goto free_root_inode;
b59d0bae 4451
6ce19aff
CY		 4452 err = f2fs_register_sysfs(sbi);
4453 if (err)
4454 goto free_compress_inode;
4455
ea676733 4456#ifdef CONFIG_QUOTA
76cf05d7 4457 /* Enable quota usage during mount */
7beb01f7 4458 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 4459 err = f2fs_enable_quotas(sb);
730746ce 4460 if (err)
dcbb4c10 4461 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
ea676733 4462 }
e1bb7d3d
CY		 4463
4464 quota_enabled = f2fs_recover_quota_begin(sbi);
ea676733 4465#endif
7a88ddb5 4466 /* if there are any orphan inodes, free them */
4d57b86d 4467 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 4468 if (err)
ea676733 4469 goto free_meta;
4b2414d0 4470
4354994f 4471 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 4472 goto reset_checkpoint;
4354994f 4473
6437d1b0 4474 /* recover fsynced data */
a9117eca
CY		 4475 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
4476 !test_opt(sbi, NORECOVERY)) {
081d78c2
JK		 4477 /*
4478 * mount should be failed, when device has readonly mode, and
4479 * previous checkpoint was not done by clean system shutdown.
4480 */
b61af314 4481 if (f2fs_hw_is_readonly(sbi)) {
23738e74
CY		 4482 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4483 err = f2fs_recover_fsync_data(sbi, true);
4484 if (err > 0) {
4485 err = -EROFS;
4486 f2fs_err(sbi, "Need to recover fsync data, but "
4487 "write access unavailable, please try "
4488 "mount w/ disable_roll_forward or norecovery");
4489 }
4490 if (err < 0)
4491 goto free_meta;
4492 }
4493 f2fs_info(sbi, "write access unavailable, skipping recovery");
b61af314 4494 goto reset_checkpoint;
081d78c2 4495 }
2adc3505
CY		 4496
4497 if (need_fsck)
4498 set_sbi_flag(sbi, SBI_NEED_FSCK);
4499
aa2c8c43
CY		 4500 if (skip_recovery)
4501 goto reset_checkpoint;
a468f0ef 4502
4d57b86d 4503 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 4504 if (err < 0) {
aa2c8c43
CY		 4505 if (err != -ENOMEM)
4506 skip_recovery = true;
2adc3505 4507 need_fsck = true;
dcbb4c10
JP		 4508 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
4509 err);
4b2414d0 4510 goto free_meta;
ed2e621a 4511 }
6781eabb 4512 } else {
4d57b86d 4513 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 4514
4515 if (!f2fs_readonly(sb) && err > 0) {
4516 err = -EINVAL;
dcbb4c10 4517 f2fs_err(sbi, "Need to recover fsync data");
ea676733 4518 goto free_meta;
6781eabb 4519 }
6437d1b0 4520 }
d508c94e 4521
e1bb7d3d
CY		 4522#ifdef CONFIG_QUOTA
4523 f2fs_recover_quota_end(sbi, quota_enabled);
4524#endif
4525
d508c94e
SK		 4526 /*
4527 * If the f2fs is not readonly and fsync data recovery succeeds,
4528 * check zoned block devices' write pointer consistency.
4529 */
4530 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
4531 err = f2fs_check_write_pointer(sbi);
4532 if (err)
4533 goto free_meta;
4534 }
4535
aa2c8c43 4536reset_checkpoint:
093749e2
CY		 4537 f2fs_init_inmem_curseg(sbi);
4538
4d57b86d 4539 /* f2fs_recover_fsync_data() cleared this already */
315df839 4540 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 4541
4354994f
DR		 4542 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
4543 err = f2fs_disable_checkpoint(sbi);
4544 if (err)
812a9597 4545 goto sync_free_meta;
4354994f
DR		 4546 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
4547 f2fs_enable_checkpoint(sbi);
4548 }
4549
6437d1b0
JK		 4550 /*
4551 * If filesystem is not mounted as read-only then
4552 * do start the gc_thread.
4553 */
5911d2d1
CY		 4554 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF ||
4555 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) {
6437d1b0 4556 /* After POR, we can run background GC thread.*/
4d57b86d 4557 err = f2fs_start_gc_thread(sbi);
6437d1b0 4558 if (err)
812a9597 4559 goto sync_free_meta;
6437d1b0 4560 }
5222595d 4561 kvfree(options);
da554e48 4562
4563 /* recover broken superblock */
f2353d7b 4564 if (recovery) {
41214b3c 4565 err = f2fs_commit_super(sbi, true);
dcbb4c10
JP		 4566 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
4567 sbi->valid_super_block ? 1 : 2, err);
da554e48 4568 }
4569
bae01eda
CY		 4570 f2fs_join_shrinker(sbi);
4571
84b89e5d
JK		 4572 f2fs_tuning_parameters(sbi);
4573
dcbb4c10
JP		 4574 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
4575 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 4576 f2fs_update_time(sbi, CP_TIME);
d0239e1b 4577 f2fs_update_time(sbi, REQ_TIME);
db610a64 4578 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 4579 return 0;
6437d1b0 4580
812a9597
JK		 4581sync_free_meta:
4582 /* safe to flush all the data */
4583 sync_filesystem(sbi->sb);
aa2c8c43 4584 retry_cnt = 0;
812a9597 4585
4b2414d0 4586free_meta:
ea676733 4587#ifdef CONFIG_QUOTA
26b5a079 4588 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 4589 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 4590 f2fs_quota_off_umount(sbi->sb);
4591#endif
4b2414d0 4592 /*
4d57b86d 4593 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 4594 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 4595 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
4596 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 4597 */
4598 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 4599 /* evict some inodes being cached by GC */
4600 evict_inodes(sb);
dc6b2055 4601 f2fs_unregister_sysfs(sbi);
6ce19aff
CY		 4602free_compress_inode:
4603 f2fs_destroy_compress_inode(sbi);
aff063e2
JK		 4604free_root_inode:
4605 dput(sb->s_root);
4606 sb->s_root = NULL;
4607free_node_inode:
4d57b86d 4608 f2fs_release_ino_entry(sbi, true);
bae01eda 4609 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 4610 iput(sbi->node_inode);
7c77bf7d 4611 sbi->node_inode = NULL;
60aa4d55
ST		 4612free_stats:
4613 f2fs_destroy_stats(sbi);
aff063e2 4614free_nm:
5429c9db
DM		 4615 /* stop discard thread before destroying node manager */
4616 f2fs_stop_discard_thread(sbi);
4d57b86d 4617 f2fs_destroy_node_manager(sbi);
aff063e2 4618free_sm:
4d57b86d 4619 f2fs_destroy_segment_manager(sbi);
261eeb9c
DJ		 4620stop_ckpt_thread:
4621 f2fs_stop_ckpt_thread(sbi);
7b02b220 4622 f2fs_destroy_post_read_wq(sbi);
3c62be17
JK		 4623free_devices:
4624 destroy_device_list(sbi);
5222595d 4625 kvfree(sbi->ckpt);
aff063e2
JK		 4626free_meta_inode:
4627 make_bad_inode(sbi->meta_inode);
4628 iput(sbi->meta_inode);
7c77bf7d 4629 sbi->meta_inode = NULL;
31083031
CY		 4630free_page_array_cache:
4631 f2fs_destroy_page_array_cache(sbi);
a999150f
CY		 4632free_xattr_cache:
4633 f2fs_destroy_xattr_caches(sbi);
0a595eba
JK		 4634free_io_dummy:
4635 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 4636free_percpu:
4637 destroy_percpu_info(sbi);
a4b68176
DJ		 4638free_iostat:
4639 f2fs_destroy_iostat(sbi);
d7997e63 4640free_bio_info:
a912b54d 4641 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 4642 kvfree(sbi->write_io[i]);
5aba5430 4643
5298d4bf 4644#if IS_ENABLED(CONFIG_UNICODE)
eca4873e 4645 utf8_unload(sb->s_encoding);
89ff6005 4646 sb->s_encoding = NULL;
5aba5430 4647#endif
d7997e63 4648free_options:
4b2414d0
CY		 4649#ifdef CONFIG_QUOTA
4650 for (i = 0; i < MAXQUOTAS; i++)
ba87a45c 4651 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 4652#endif
ac4acb1f 4653 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy);
5222595d 4654 kvfree(options);
aff063e2 4655free_sb_buf:
742532d1 4656 kfree(raw_super);
aff063e2 4657free_sbi:
43b6573b
KM		 4658 if (sbi->s_chksum_driver)
4659 crypto_free_shash(sbi->s_chksum_driver);
742532d1 4660 kfree(sbi);
ed2e621a
JK		 4661
4662 /* give only one another chance */
aa2c8c43
CY		 4663 if (retry_cnt > 0 && skip_recovery) {
4664 retry_cnt--;
ed2e621a
JK		 4665 shrink_dcache_sb(sb);
4666 goto try_onemore;
4667 }
aff063e2
JK		 4668 return err;
4669}
4670
4671static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
4672 const char *dev_name, void *data)
4673{
4674 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
4675}
4676
30a5537f
JK		 4677static void kill_f2fs_super(struct super_block *sb)
4678{
cce13252 4679 if (sb->s_root) {
1cb50f87
JK		 4680 struct f2fs_sb_info *sbi = F2FS_SB(sb);
4681
4682 set_sbi_flag(sbi, SBI_IS_CLOSE);
4683 f2fs_stop_gc_thread(sbi);
4684 f2fs_stop_discard_thread(sbi);
4685
6ce19aff
CY		 4686#ifdef CONFIG_F2FS_FS_COMPRESSION
4687 /*
4688 * latter evict_inode() can bypass checking and invalidating
4689 * compress inode cache.
4690 */
4691 if (test_opt(sbi, COMPRESS_CACHE))
4692 truncate_inode_pages_final(COMPRESS_MAPPING(sbi));
4693#endif
4694
1cb50f87
JK		 4695 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
4696 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
4697 struct cp_control cpc = {
4698 .reason = CP_UMOUNT,
4699 };
4700 f2fs_write_checkpoint(sbi, &cpc);
4701 }
1378752b
CY		 4702
4703 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
4704 sb->s_flags &= ~SB_RDONLY;
cce13252 4705 }
30a5537f
JK		 4706 kill_block_super(sb);
4707}
4708
aff063e2
JK		 4709static struct file_system_type f2fs_fs_type = {
4710 .owner = THIS_MODULE,
4711 .name = "f2fs",
4712 .mount = f2fs_mount,
30a5537f 4713 .kill_sb = kill_f2fs_super,
984fc4e7 4714 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP,
aff063e2 4715};
7f78e035 4716MODULE_ALIAS_FS("f2fs");
aff063e2 4717
6e6093a8 4718static int __init init_inodecache(void)
aff063e2 4719{
5d097056
VD		 4720 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
4721 sizeof(struct f2fs_inode_info), 0,
4722 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
870af777 4723 return f2fs_inode_cachep ? 0 : -ENOMEM;
aff063e2
JK		 4724}
4725
4726static void destroy_inodecache(void)
4727{
4728 /*
4729 * Make sure all delayed rcu free inodes are flushed before we
4730 * destroy cache.
4731 */
4732 rcu_barrier();
4733 kmem_cache_destroy(f2fs_inode_cachep);
4734}
4735
4736static int __init init_f2fs_fs(void)
4737{
4738 int err;
4739
4071e67c
AP		 4740 if (PAGE_SIZE != F2FS_BLKSIZE) {
4741 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
4742 PAGE_SIZE, F2FS_BLKSIZE);
4743 return -EINVAL;
4744 }
4745
aff063e2
JK		 4746 err = init_inodecache();
4747 if (err)
4748 goto fail;
4d57b86d 4749 err = f2fs_create_node_manager_caches();
aff063e2 4750 if (err)
9890ff3f 4751 goto free_inodecache;
4d57b86d 4752 err = f2fs_create_segment_manager_caches();
aff063e2 4753 if (err)
9890ff3f 4754 goto free_node_manager_caches;
4d57b86d 4755 err = f2fs_create_checkpoint_caches();
aff063e2 4756 if (err)
06292073 4757 goto free_segment_manager_caches;
cad83c96 4758 err = f2fs_create_recovery_cache();
1dcc336b
CY		 4759 if (err)
4760 goto free_checkpoint_caches;
cad83c96
CY		 4761 err = f2fs_create_extent_cache();
4762 if (err)
4763 goto free_recovery_cache;
093749e2 4764 err = f2fs_create_garbage_collection_cache();
a398101a 4765 if (err)
1dcc336b 4766 goto free_extent_cache;
093749e2
CY		 4767 err = f2fs_init_sysfs();
4768 if (err)
4769 goto free_garbage_collection_cache;
e33c267a 4770 err = register_shrinker(&f2fs_shrinker_info, "f2fs-shrinker");
cfc4d971 4771 if (err)
a398101a 4772 goto free_sysfs;
2658e50d
JK		 4773 err = register_filesystem(&f2fs_fs_type);
4774 if (err)
4775 goto free_shrinker;
21acc07d 4776 f2fs_create_root_stats();
6dbb1796
EB		 4777 err = f2fs_init_post_read_processing();
4778 if (err)
4779 goto free_root_stats;
a4b68176 4780 err = f2fs_init_iostat_processing();
0b20fcec
CY		 4781 if (err)
4782 goto free_post_read;
a4b68176
DJ		 4783 err = f2fs_init_bio_entry_cache();
4784 if (err)
4785 goto free_iostat;
f543805f
CY		 4786 err = f2fs_init_bioset();
4787 if (err)
db8dcd25 4788 goto free_bio_entry_cache;
5e6bbde9
CY		 4789 err = f2fs_init_compress_mempool();
4790 if (err)
4791 goto free_bioset;
c68d6c88
CY		 4792 err = f2fs_init_compress_cache();
4793 if (err)
4794 goto free_compress_mempool;
4d9a2bb1
CY		 4795 err = f2fs_create_casefold_cache();
4796 if (err)
4797 goto free_compress_cache;
9890ff3f 4798 return 0;
4d9a2bb1
CY		 4799free_compress_cache:
4800 f2fs_destroy_compress_cache();
c68d6c88
CY		 4801free_compress_mempool:
4802 f2fs_destroy_compress_mempool();
5e6bbde9
CY		 4803free_bioset:
4804 f2fs_destroy_bioset();
db8dcd25 4805free_bio_entry_cache:
f543805f 4806 f2fs_destroy_bio_entry_cache();
a4b68176
DJ		 4807free_iostat:
4808 f2fs_destroy_iostat_processing();
0b20fcec
CY		 4809free_post_read:
4810 f2fs_destroy_post_read_processing();
6dbb1796
EB		 4811free_root_stats:
4812 f2fs_destroy_root_stats();
787c7b8c 4813 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 4814free_shrinker:
4815 unregister_shrinker(&f2fs_shrinker_info);
a398101a 4816free_sysfs:
dc6b2055 4817 f2fs_exit_sysfs();
093749e2
CY		 4818free_garbage_collection_cache:
4819 f2fs_destroy_garbage_collection_cache();
1dcc336b 4820free_extent_cache:
4d57b86d 4821 f2fs_destroy_extent_cache();
cad83c96
CY		 4822free_recovery_cache:
4823 f2fs_destroy_recovery_cache();
9890ff3f 4824free_checkpoint_caches:
4d57b86d 4825 f2fs_destroy_checkpoint_caches();
7fd9e544 4826free_segment_manager_caches:
4d57b86d 4827 f2fs_destroy_segment_manager_caches();
9890ff3f 4828free_node_manager_caches:
4d57b86d 4829 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 4830free_inodecache:
4831 destroy_inodecache();
aff063e2
JK		 4832fail:
4833 return err;
4834}
4835
4836static void __exit exit_f2fs_fs(void)
4837{
4d9a2bb1 4838 f2fs_destroy_casefold_cache();
c68d6c88 4839 f2fs_destroy_compress_cache();
5e6bbde9 4840 f2fs_destroy_compress_mempool();
f543805f 4841 f2fs_destroy_bioset();
0b20fcec 4842 f2fs_destroy_bio_entry_cache();
a4b68176 4843 f2fs_destroy_iostat_processing();
6dbb1796 4844 f2fs_destroy_post_read_processing();
4589d25d 4845 f2fs_destroy_root_stats();
aff063e2 4846 unregister_filesystem(&f2fs_fs_type);
b8bef79d 4847 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 4848 f2fs_exit_sysfs();
093749e2 4849 f2fs_destroy_garbage_collection_cache();
4d57b86d 4850 f2fs_destroy_extent_cache();
cad83c96 4851 f2fs_destroy_recovery_cache();
4d57b86d
CY		 4852 f2fs_destroy_checkpoint_caches();
4853 f2fs_destroy_segment_manager_caches();
4854 f2fs_destroy_node_manager_caches();
aff063e2
JK		 4855 destroy_inodecache();
4856}
4857
4858module_init(init_f2fs_fs)
4859module_exit(exit_f2fs_fs)
4860
4861MODULE_AUTHOR("Samsung Electronics's Praesto Team");
4862MODULE_DESCRIPTION("Flash Friendly File System");
4863MODULE_LICENSE("GPL");
0dd57178 4864MODULE_SOFTDEP("pre: crc32");
b4b9d34c 4865
Linux 6.x block layer and io_uring tree(s)