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fs: Use dquot_load_quota_inode() from filesystems
[linux-2.6-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>
11#include <linux/statfs.h>
aff063e2
JK		 12#include <linux/buffer_head.h>
13#include <linux/backing-dev.h>
14#include <linux/kthread.h>
15#include <linux/parser.h>
16#include <linux/mount.h>
17#include <linux/seq_file.h>
5e176d54 18#include <linux/proc_fs.h>
aff063e2
JK		 19#include <linux/random.h>
20#include <linux/exportfs.h>
d3ee456d 21#include <linux/blkdev.h>
0abd675e 22#include <linux/quotaops.h>
aff063e2 23#include <linux/f2fs_fs.h>
b59d0bae 24#include <linux/sysfs.h>
4b2414d0 25#include <linux/quota.h>
5aba5430 26#include <linux/unicode.h>
aff063e2
JK		 27
28#include "f2fs.h"
29#include "node.h"
5ec4e49f 30#include "segment.h"
aff063e2 31#include "xattr.h"
b59d0bae 32#include "gc.h"
db9f7c1a 33#include "trace.h"
aff063e2 34
a2a4a7e4
NJ		 35#define CREATE_TRACE_POINTS
36#include <trace/events/f2fs.h>
37
aff063e2
JK		 38static struct kmem_cache *f2fs_inode_cachep;
39
73faec4d 40#ifdef CONFIG_F2FS_FAULT_INJECTION
2c63fead 41
19880e6e 42const char *f2fs_fault_name[FAULT_MAX] = {
2c63fead 43 [FAULT_KMALLOC] = "kmalloc",
628b3d14 44 [FAULT_KVMALLOC] = "kvmalloc",
c41f3cc3 45 [FAULT_PAGE_ALLOC] = "page alloc",
01eccef7 46 [FAULT_PAGE_GET] = "page get",
d62fe971 47 [FAULT_ALLOC_BIO] = "alloc bio",
cb78942b
JK		 48 [FAULT_ALLOC_NID] = "alloc nid",
49 [FAULT_ORPHAN] = "orphan",
50 [FAULT_BLOCK] = "no more block",
51 [FAULT_DIR_DEPTH] = "too big dir depth",
53aa6bbf 52 [FAULT_EVICT_INODE] = "evict_inode fail",
14b44d23 53 [FAULT_TRUNCATE] = "truncate fail",
6f5c2ed0 54 [FAULT_READ_IO] = "read IO error",
0f348028 55 [FAULT_CHECKPOINT] = "checkpoint error",
b83dcfe6 56 [FAULT_DISCARD] = "discard error",
6f5c2ed0 57 [FAULT_WRITE_IO] = "write IO error",
2c63fead 58};
08796897 59
d494500a
CY		 60void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
61 unsigned int type)
08796897 62{
63189b78 63 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1ecc0c5c 64
08796897 65 if (rate) {
1ecc0c5c
CY		 66 atomic_set(&ffi->inject_ops, 0);
67 ffi->inject_rate = rate;
08796897 68 }
d494500a
CY		 69
70 if (type)
71 ffi->inject_type = type;
72
73 if (!rate && !type)
74 memset(ffi, 0, sizeof(struct f2fs_fault_info));
08796897 75}
73faec4d
JK		 76#endif
77
2658e50d
JK		 78/* f2fs-wide shrinker description */
79static struct shrinker f2fs_shrinker_info = {
80 .scan_objects = f2fs_shrink_scan,
81 .count_objects = f2fs_shrink_count,
82 .seeks = DEFAULT_SEEKS,
83};
84
aff063e2 85enum {
696c018c 86 Opt_gc_background,
aff063e2 87 Opt_disable_roll_forward,
2d834bf9 88 Opt_norecovery,
aff063e2 89 Opt_discard,
64058be9 90 Opt_nodiscard,
aff063e2 91 Opt_noheap,
7a20b8a6 92 Opt_heap,
4058c511 93 Opt_user_xattr,
aff063e2 94 Opt_nouser_xattr,
4058c511 95 Opt_acl,
aff063e2
JK		 96 Opt_noacl,
97 Opt_active_logs,
98 Opt_disable_ext_identify,
444c580f 99 Opt_inline_xattr,
23cf7212 100 Opt_noinline_xattr,
6afc662e 101 Opt_inline_xattr_size,
8274de77 102 Opt_inline_data,
5efd3c6f 103 Opt_inline_dentry,
97c1794a 104 Opt_noinline_dentry,
6b4afdd7 105 Opt_flush_merge,
69e9e427 106 Opt_noflush_merge,
0f7b2abd 107 Opt_nobarrier,
d5053a34 108 Opt_fastboot,
89672159 109 Opt_extent_cache,
7daaea25 110 Opt_noextent_cache,
75342797 111 Opt_noinline_data,
343f40f0 112 Opt_data_flush,
7e65be49 113 Opt_reserve_root,
7c2e5963
JK		 114 Opt_resgid,
115 Opt_resuid,
36abef4e 116 Opt_mode,
ec91538d 117 Opt_io_size_bits,
73faec4d 118 Opt_fault_injection,
d494500a 119 Opt_fault_type,
6d94c74a
JK		 120 Opt_lazytime,
121 Opt_nolazytime,
4b2414d0
CY		 122 Opt_quota,
123 Opt_noquota,
0abd675e
CY		 124 Opt_usrquota,
125 Opt_grpquota,
5c57132e 126 Opt_prjquota,
4b2414d0
CY		 127 Opt_usrjquota,
128 Opt_grpjquota,
129 Opt_prjjquota,
130 Opt_offusrjquota,
131 Opt_offgrpjquota,
132 Opt_offprjjquota,
133 Opt_jqfmt_vfsold,
134 Opt_jqfmt_vfsv0,
135 Opt_jqfmt_vfsv1,
0cdd3195 136 Opt_whint,
07939627 137 Opt_alloc,
93cf93f1 138 Opt_fsync,
ff62af20 139 Opt_test_dummy_encryption,
4d3aed70
DR		 140 Opt_checkpoint_disable,
141 Opt_checkpoint_disable_cap,
142 Opt_checkpoint_disable_cap_perc,
143 Opt_checkpoint_enable,
aff063e2
JK		 144 Opt_err,
145};
146
147static match_table_t f2fs_tokens = {
696c018c 148 {Opt_gc_background, "background_gc=%s"},
aff063e2 149 {Opt_disable_roll_forward, "disable_roll_forward"},
2d834bf9 150 {Opt_norecovery, "norecovery"},
aff063e2 151 {Opt_discard, "discard"},
64058be9 152 {Opt_nodiscard, "nodiscard"},
aff063e2 153 {Opt_noheap, "no_heap"},
7a20b8a6 154 {Opt_heap, "heap"},
4058c511 155 {Opt_user_xattr, "user_xattr"},
aff063e2 156 {Opt_nouser_xattr, "nouser_xattr"},
4058c511 157 {Opt_acl, "acl"},
aff063e2
JK		 158 {Opt_noacl, "noacl"},
159 {Opt_active_logs, "active_logs=%u"},
160 {Opt_disable_ext_identify, "disable_ext_identify"},
444c580f 161 {Opt_inline_xattr, "inline_xattr"},
23cf7212 162 {Opt_noinline_xattr, "noinline_xattr"},
6afc662e 163 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
8274de77 164 {Opt_inline_data, "inline_data"},
5efd3c6f 165 {Opt_inline_dentry, "inline_dentry"},
97c1794a 166 {Opt_noinline_dentry, "noinline_dentry"},
6b4afdd7 167 {Opt_flush_merge, "flush_merge"},
69e9e427 168 {Opt_noflush_merge, "noflush_merge"},
0f7b2abd 169 {Opt_nobarrier, "nobarrier"},
d5053a34 170 {Opt_fastboot, "fastboot"},
89672159 171 {Opt_extent_cache, "extent_cache"},
7daaea25 172 {Opt_noextent_cache, "noextent_cache"},
75342797 173 {Opt_noinline_data, "noinline_data"},
343f40f0 174 {Opt_data_flush, "data_flush"},
7e65be49 175 {Opt_reserve_root, "reserve_root=%u"},
7c2e5963
JK		 176 {Opt_resgid, "resgid=%u"},
177 {Opt_resuid, "resuid=%u"},
36abef4e 178 {Opt_mode, "mode=%s"},
ec91538d 179 {Opt_io_size_bits, "io_bits=%u"},
73faec4d 180 {Opt_fault_injection, "fault_injection=%u"},
d494500a 181 {Opt_fault_type, "fault_type=%u"},
6d94c74a
JK		 182 {Opt_lazytime, "lazytime"},
183 {Opt_nolazytime, "nolazytime"},
4b2414d0
CY		 184 {Opt_quota, "quota"},
185 {Opt_noquota, "noquota"},
0abd675e
CY		 186 {Opt_usrquota, "usrquota"},
187 {Opt_grpquota, "grpquota"},
5c57132e 188 {Opt_prjquota, "prjquota"},
4b2414d0
CY		 189 {Opt_usrjquota, "usrjquota=%s"},
190 {Opt_grpjquota, "grpjquota=%s"},
191 {Opt_prjjquota, "prjjquota=%s"},
192 {Opt_offusrjquota, "usrjquota="},
193 {Opt_offgrpjquota, "grpjquota="},
194 {Opt_offprjjquota, "prjjquota="},
195 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
196 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
197 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
0cdd3195 198 {Opt_whint, "whint_mode=%s"},
07939627 199 {Opt_alloc, "alloc_mode=%s"},
93cf93f1 200 {Opt_fsync, "fsync_mode=%s"},
ff62af20 201 {Opt_test_dummy_encryption, "test_dummy_encryption"},
4d3aed70
DR		 202 {Opt_checkpoint_disable, "checkpoint=disable"},
203 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
204 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
205 {Opt_checkpoint_enable, "checkpoint=enable"},
aff063e2
JK		 206 {Opt_err, NULL},
207};
208
dcbb4c10 209void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
a07ef784
NJ		 210{
211 struct va_format vaf;
212 va_list args;
dcbb4c10 213 int level;
a07ef784
NJ		 214
215 va_start(args, fmt);
dcbb4c10
JP		 216
217 level = printk_get_level(fmt);
218 vaf.fmt = printk_skip_level(fmt);
a07ef784 219 vaf.va = &args;
dcbb4c10
JP		 220 printk("%c%cF2FS-fs (%s): %pV\n",
221 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
222
a07ef784
NJ		 223 va_end(args);
224}
225
5aba5430
DR		 226#ifdef CONFIG_UNICODE
227static const struct f2fs_sb_encodings {
228 __u16 magic;
229 char *name;
230 char *version;
231} f2fs_sb_encoding_map[] = {
232 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
233};
234
235static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
236 const struct f2fs_sb_encodings **encoding,
237 __u16 *flags)
238{
239 __u16 magic = le16_to_cpu(sb->s_encoding);
240 int i;
241
242 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
243 if (magic == f2fs_sb_encoding_map[i].magic)
244 break;
245
246 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
247 return -EINVAL;
248
249 *encoding = &f2fs_sb_encoding_map[i];
250 *flags = le16_to_cpu(sb->s_encoding_flags);
251
252 return 0;
253}
254#endif
255
7e65be49
JK		 256static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
257{
9a9aecaa
DR		 258 block_t limit = min((sbi->user_block_count << 1) / 1000,
259 sbi->user_block_count - sbi->reserved_blocks);
7e65be49
JK		 260
261 /* limit is 0.2% */
63189b78
CY		 262 if (test_opt(sbi, RESERVE_ROOT) &&
263 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
264 F2FS_OPTION(sbi).root_reserved_blocks = limit;
dcbb4c10
JP		 265 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
266 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 267 }
7c2e5963 268 if (!test_opt(sbi, RESERVE_ROOT) &&
63189b78 269 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
7c2e5963 270 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
63189b78 271 !gid_eq(F2FS_OPTION(sbi).s_resgid,
7c2e5963 272 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
dcbb4c10
JP		 273 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
274 from_kuid_munged(&init_user_ns,
275 F2FS_OPTION(sbi).s_resuid),
276 from_kgid_munged(&init_user_ns,
277 F2FS_OPTION(sbi).s_resgid));
7e65be49
JK		 278}
279
aff063e2
JK		 280static void init_once(void *foo)
281{
282 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
283
aff063e2
JK		 284 inode_init_once(&fi->vfs_inode);
285}
286
4b2414d0
CY		 287#ifdef CONFIG_QUOTA
288static const char * const quotatypes[] = INITQFNAMES;
289#define QTYPE2NAME(t) (quotatypes[t])
290static int f2fs_set_qf_name(struct super_block *sb, int qtype,
291 substring_t *args)
292{
293 struct f2fs_sb_info *sbi = F2FS_SB(sb);
294 char *qname;
295 int ret = -EINVAL;
296
63189b78 297 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 298 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 299 return -EINVAL;
300 }
7beb01f7 301 if (f2fs_sb_has_quota_ino(sbi)) {
dcbb4c10 302 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
ea676733
JK		 303 return 0;
304 }
305
4b2414d0
CY		 306 qname = match_strdup(args);
307 if (!qname) {
dcbb4c10 308 f2fs_err(sbi, "Not enough memory for storing quotafile name");
f365c6cc 309 return -ENOMEM;
4b2414d0 310 }
63189b78
CY		 311 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
312 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
4b2414d0
CY		 313 ret = 0;
314 else
dcbb4c10 315 f2fs_err(sbi, "%s quota file already specified",
4b2414d0
CY		 316 QTYPE2NAME(qtype));
317 goto errout;
318 }
319 if (strchr(qname, '/')) {
dcbb4c10 320 f2fs_err(sbi, "quotafile must be on filesystem root");
4b2414d0
CY		 321 goto errout;
322 }
63189b78 323 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
4b2414d0
CY		 324 set_opt(sbi, QUOTA);
325 return 0;
326errout:
5222595d 327 kvfree(qname);
4b2414d0
CY		 328 return ret;
329}
330
331static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
332{
333 struct f2fs_sb_info *sbi = F2FS_SB(sb);
334
63189b78 335 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 336 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 337 return -EINVAL;
338 }
5222595d 339 kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
63189b78 340 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
4b2414d0
CY		 341 return 0;
342}
343
344static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
345{
346 /*
347 * We do the test below only for project quotas. 'usrquota' and
348 * 'grpquota' mount options are allowed even without quota feature
349 * to support legacy quotas in quota files.
350 */
7beb01f7 351 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
dcbb4c10 352 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
4b2414d0
CY		 353 return -1;
354 }
63189b78
CY		 355 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
356 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
357 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
358 if (test_opt(sbi, USRQUOTA) &&
359 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
4b2414d0
CY		 360 clear_opt(sbi, USRQUOTA);
361
63189b78
CY		 362 if (test_opt(sbi, GRPQUOTA) &&
363 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
4b2414d0
CY		 364 clear_opt(sbi, GRPQUOTA);
365
63189b78
CY		 366 if (test_opt(sbi, PRJQUOTA) &&
367 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4b2414d0
CY		 368 clear_opt(sbi, PRJQUOTA);
369
370 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
371 test_opt(sbi, PRJQUOTA)) {
dcbb4c10 372 f2fs_err(sbi, "old and new quota format mixing");
4b2414d0
CY		 373 return -1;
374 }
375
63189b78 376 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 377 f2fs_err(sbi, "journaled quota format not specified");
4b2414d0
CY		 378 return -1;
379 }
380 }
ea676733 381
7beb01f7 382 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 383 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
63189b78 384 F2FS_OPTION(sbi).s_jquota_fmt = 0;
ea676733 385 }
4b2414d0
CY		 386 return 0;
387}
388#endif
389
696c018c
NJ		 390static int parse_options(struct super_block *sb, char *options)
391{
392 struct f2fs_sb_info *sbi = F2FS_SB(sb);
393 substring_t args[MAX_OPT_ARGS];
394 char *p, *name;
395 int arg = 0;
7c2e5963
JK		 396 kuid_t uid;
397 kgid_t gid;
4b2414d0
CY		 398#ifdef CONFIG_QUOTA
399 int ret;
400#endif
696c018c
NJ		 401
402 if (!options)
403 return 0;
404
405 while ((p = strsep(&options, ",")) != NULL) {
406 int token;
407 if (!*p)
408 continue;
409 /*
410 * Initialize args struct so we know whether arg was
411 * found; some options take optional arguments.
412 */
413 args[0].to = args[0].from = NULL;
414 token = match_token(p, f2fs_tokens, args);
415
416 switch (token) {
417 case Opt_gc_background:
418 name = match_strdup(&args[0]);
419
420 if (!name)
421 return -ENOMEM;
6aefd93b 422 if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
696c018c 423 set_opt(sbi, BG_GC);
6aefd93b
JK		 424 clear_opt(sbi, FORCE_FG_GC);
425 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
696c018c 426 clear_opt(sbi, BG_GC);
6aefd93b
JK		 427 clear_opt(sbi, FORCE_FG_GC);
428 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
429 set_opt(sbi, BG_GC);
430 set_opt(sbi, FORCE_FG_GC);
431 } else {
5222595d 432 kvfree(name);
696c018c
NJ		 433 return -EINVAL;
434 }
5222595d 435 kvfree(name);
696c018c
NJ		 436 break;
437 case Opt_disable_roll_forward:
438 set_opt(sbi, DISABLE_ROLL_FORWARD);
439 break;
2d834bf9
JK		 440 case Opt_norecovery:
441 /* this option mounts f2fs with ro */
442 set_opt(sbi, DISABLE_ROLL_FORWARD);
443 if (!f2fs_readonly(sb))
444 return -EINVAL;
445 break;
696c018c 446 case Opt_discard:
7d20c8ab 447 set_opt(sbi, DISCARD);
696c018c 448 break;
64058be9 449 case Opt_nodiscard:
7beb01f7 450 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 451 f2fs_warn(sbi, "discard is required for zoned block devices");
96ba2dec
DLM		 452 return -EINVAL;
453 }
64058be9 454 clear_opt(sbi, DISCARD);
487df616 455 break;
696c018c
NJ		 456 case Opt_noheap:
457 set_opt(sbi, NOHEAP);
458 break;
7a20b8a6
JK		 459 case Opt_heap:
460 clear_opt(sbi, NOHEAP);
461 break;
696c018c 462#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 463 case Opt_user_xattr:
464 set_opt(sbi, XATTR_USER);
465 break;
696c018c
NJ		 466 case Opt_nouser_xattr:
467 clear_opt(sbi, XATTR_USER);
468 break;
444c580f
JK		 469 case Opt_inline_xattr:
470 set_opt(sbi, INLINE_XATTR);
471 break;
23cf7212
CY		 472 case Opt_noinline_xattr:
473 clear_opt(sbi, INLINE_XATTR);
474 break;
6afc662e
CY		 475 case Opt_inline_xattr_size:
476 if (args->from && match_int(args, &arg))
477 return -EINVAL;
478 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 479 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 480 break;
696c018c 481#else
4058c511 482 case Opt_user_xattr:
dcbb4c10 483 f2fs_info(sbi, "user_xattr options not supported");
4058c511 484 break;
696c018c 485 case Opt_nouser_xattr:
dcbb4c10 486 f2fs_info(sbi, "nouser_xattr options not supported");
696c018c 487 break;
444c580f 488 case Opt_inline_xattr:
dcbb4c10 489 f2fs_info(sbi, "inline_xattr options not supported");
444c580f 490 break;
23cf7212 491 case Opt_noinline_xattr:
dcbb4c10 492 f2fs_info(sbi, "noinline_xattr options not supported");
23cf7212 493 break;
696c018c
NJ		 494#endif
495#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 496 case Opt_acl:
497 set_opt(sbi, POSIX_ACL);
498 break;
696c018c
NJ		 499 case Opt_noacl:
500 clear_opt(sbi, POSIX_ACL);
501 break;
502#else
4058c511 503 case Opt_acl:
dcbb4c10 504 f2fs_info(sbi, "acl options not supported");
4058c511 505 break;
696c018c 506 case Opt_noacl:
dcbb4c10 507 f2fs_info(sbi, "noacl options not supported");
696c018c
NJ		 508 break;
509#endif
510 case Opt_active_logs:
511 if (args->from && match_int(args, &arg))
512 return -EINVAL;
513 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
514 return -EINVAL;
63189b78 515 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 516 break;
517 case Opt_disable_ext_identify:
518 set_opt(sbi, DISABLE_EXT_IDENTIFY);
519 break;
8274de77
HL		 520 case Opt_inline_data:
521 set_opt(sbi, INLINE_DATA);
522 break;
5efd3c6f
CY		 523 case Opt_inline_dentry:
524 set_opt(sbi, INLINE_DENTRY);
525 break;
97c1794a
CY		 526 case Opt_noinline_dentry:
527 clear_opt(sbi, INLINE_DENTRY);
528 break;
6b4afdd7
JK		 529 case Opt_flush_merge:
530 set_opt(sbi, FLUSH_MERGE);
531 break;
69e9e427
JK		 532 case Opt_noflush_merge:
533 clear_opt(sbi, FLUSH_MERGE);
534 break;
0f7b2abd
JK		 535 case Opt_nobarrier:
536 set_opt(sbi, NOBARRIER);
537 break;
d5053a34
JK		 538 case Opt_fastboot:
539 set_opt(sbi, FASTBOOT);
540 break;
89672159
CY		 541 case Opt_extent_cache:
542 set_opt(sbi, EXTENT_CACHE);
543 break;
7daaea25
JK		 544 case Opt_noextent_cache:
545 clear_opt(sbi, EXTENT_CACHE);
546 break;
75342797
WL		 547 case Opt_noinline_data:
548 clear_opt(sbi, INLINE_DATA);
549 break;
343f40f0
CY		 550 case Opt_data_flush:
551 set_opt(sbi, DATA_FLUSH);
552 break;
7e65be49
JK		 553 case Opt_reserve_root:
554 if (args->from && match_int(args, &arg))
555 return -EINVAL;
556 if (test_opt(sbi, RESERVE_ROOT)) {
dcbb4c10
JP		 557 f2fs_info(sbi, "Preserve previous reserve_root=%u",
558 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 559 } else {
63189b78 560 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 561 set_opt(sbi, RESERVE_ROOT);
562 }
563 break;
7c2e5963
JK		 564 case Opt_resuid:
565 if (args->from && match_int(args, &arg))
566 return -EINVAL;
567 uid = make_kuid(current_user_ns(), arg);
568 if (!uid_valid(uid)) {
dcbb4c10 569 f2fs_err(sbi, "Invalid uid value %d", arg);
7c2e5963
JK		 570 return -EINVAL;
571 }
63189b78 572 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 573 break;
574 case Opt_resgid:
575 if (args->from && match_int(args, &arg))
576 return -EINVAL;
577 gid = make_kgid(current_user_ns(), arg);
578 if (!gid_valid(gid)) {
dcbb4c10 579 f2fs_err(sbi, "Invalid gid value %d", arg);
7c2e5963
JK		 580 return -EINVAL;
581 }
63189b78 582 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 583 break;
36abef4e
JK		 584 case Opt_mode:
585 name = match_strdup(&args[0]);
586
587 if (!name)
588 return -ENOMEM;
589 if (strlen(name) == 8 &&
590 !strncmp(name, "adaptive", 8)) {
7beb01f7 591 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 592 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
5222595d 593 kvfree(name);
3adc57e9
DLM		 594 return -EINVAL;
595 }
52763a4b 596 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
36abef4e
JK		 597 } else if (strlen(name) == 3 &&
598 !strncmp(name, "lfs", 3)) {
52763a4b 599 set_opt_mode(sbi, F2FS_MOUNT_LFS);
36abef4e 600 } else {
5222595d 601 kvfree(name);
36abef4e
JK		 602 return -EINVAL;
603 }
5222595d 604 kvfree(name);
36abef4e 605 break;
ec91538d
JK		 606 case Opt_io_size_bits:
607 if (args->from && match_int(args, &arg))
608 return -EINVAL;
6d52e135 609 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
dcbb4c10
JP		 610 f2fs_warn(sbi, "Not support %d, larger than %d",
611 1 << arg, BIO_MAX_PAGES);
ec91538d
JK		 612 return -EINVAL;
613 }
63189b78 614 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 615 break;
4cb037ec 616#ifdef CONFIG_F2FS_FAULT_INJECTION
73faec4d
JK		 617 case Opt_fault_injection:
618 if (args->from && match_int(args, &arg))
619 return -EINVAL;
d494500a
CY		 620 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
621 set_opt(sbi, FAULT_INJECTION);
d494500a 622 break;
4cb037ec 623
d494500a
CY		 624 case Opt_fault_type:
625 if (args->from && match_int(args, &arg))
626 return -EINVAL;
d494500a 627 f2fs_build_fault_attr(sbi, 0, arg);
0cc0dec2 628 set_opt(sbi, FAULT_INJECTION);
4cb037ec 629 break;
73faec4d 630#else
4cb037ec 631 case Opt_fault_injection:
dcbb4c10 632 f2fs_info(sbi, "fault_injection options not supported");
73faec4d 633 break;
4cb037ec
CX		 634
635 case Opt_fault_type:
dcbb4c10 636 f2fs_info(sbi, "fault_type options not supported");
4cb037ec
CX		 637 break;
638#endif
6d94c74a 639 case Opt_lazytime:
1751e8a6 640 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 641 break;
642 case Opt_nolazytime:
1751e8a6 643 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 644 break;
0abd675e 645#ifdef CONFIG_QUOTA
4b2414d0 646 case Opt_quota:
0abd675e
CY		 647 case Opt_usrquota:
648 set_opt(sbi, USRQUOTA);
649 break;
650 case Opt_grpquota:
651 set_opt(sbi, GRPQUOTA);
652 break;
5c57132e
CY		 653 case Opt_prjquota:
654 set_opt(sbi, PRJQUOTA);
655 break;
4b2414d0
CY		 656 case Opt_usrjquota:
657 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
658 if (ret)
659 return ret;
660 break;
661 case Opt_grpjquota:
662 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
663 if (ret)
664 return ret;
665 break;
666 case Opt_prjjquota:
667 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
668 if (ret)
669 return ret;
670 break;
671 case Opt_offusrjquota:
672 ret = f2fs_clear_qf_name(sb, USRQUOTA);
673 if (ret)
674 return ret;
675 break;
676 case Opt_offgrpjquota:
677 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
678 if (ret)
679 return ret;
680 break;
681 case Opt_offprjjquota:
682 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
683 if (ret)
684 return ret;
685 break;
686 case Opt_jqfmt_vfsold:
63189b78 687 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 688 break;
689 case Opt_jqfmt_vfsv0:
63189b78 690 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 691 break;
692 case Opt_jqfmt_vfsv1:
63189b78 693 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 694 break;
695 case Opt_noquota:
696 clear_opt(sbi, QUOTA);
697 clear_opt(sbi, USRQUOTA);
698 clear_opt(sbi, GRPQUOTA);
699 clear_opt(sbi, PRJQUOTA);
700 break;
0abd675e 701#else
4b2414d0 702 case Opt_quota:
0abd675e
CY		 703 case Opt_usrquota:
704 case Opt_grpquota:
5c57132e 705 case Opt_prjquota:
4b2414d0
CY		 706 case Opt_usrjquota:
707 case Opt_grpjquota:
708 case Opt_prjjquota:
709 case Opt_offusrjquota:
710 case Opt_offgrpjquota:
711 case Opt_offprjjquota:
712 case Opt_jqfmt_vfsold:
713 case Opt_jqfmt_vfsv0:
714 case Opt_jqfmt_vfsv1:
715 case Opt_noquota:
dcbb4c10 716 f2fs_info(sbi, "quota operations not supported");
0abd675e
CY		 717 break;
718#endif
0cdd3195
HL		 719 case Opt_whint:
720 name = match_strdup(&args[0]);
721 if (!name)
722 return -ENOMEM;
723 if (strlen(name) == 10 &&
724 !strncmp(name, "user-based", 10)) {
63189b78 725 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
0cdd3195
HL		 726 } else if (strlen(name) == 3 &&
727 !strncmp(name, "off", 3)) {
63189b78 728 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
f2e703f9
HL		 729 } else if (strlen(name) == 8 &&
730 !strncmp(name, "fs-based", 8)) {
63189b78 731 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
0cdd3195 732 } else {
5222595d 733 kvfree(name);
0cdd3195
HL		 734 return -EINVAL;
735 }
5222595d 736 kvfree(name);
0cdd3195 737 break;
07939627
JK		 738 case Opt_alloc:
739 name = match_strdup(&args[0]);
740 if (!name)
741 return -ENOMEM;
742
743 if (strlen(name) == 7 &&
744 !strncmp(name, "default", 7)) {
63189b78 745 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
07939627
JK		 746 } else if (strlen(name) == 5 &&
747 !strncmp(name, "reuse", 5)) {
63189b78 748 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627 749 } else {
5222595d 750 kvfree(name);
07939627
JK		 751 return -EINVAL;
752 }
5222595d 753 kvfree(name);
07939627 754 break;
93cf93f1
JZ		 755 case Opt_fsync:
756 name = match_strdup(&args[0]);
757 if (!name)
758 return -ENOMEM;
759 if (strlen(name) == 5 &&
760 !strncmp(name, "posix", 5)) {
63189b78 761 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
93cf93f1
JZ		 762 } else if (strlen(name) == 6 &&
763 !strncmp(name, "strict", 6)) {
63189b78 764 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
d6290814
JK		 765 } else if (strlen(name) == 9 &&
766 !strncmp(name, "nobarrier", 9)) {
767 F2FS_OPTION(sbi).fsync_mode =
768 FSYNC_MODE_NOBARRIER;
93cf93f1 769 } else {
5222595d 770 kvfree(name);
93cf93f1
JZ		 771 return -EINVAL;
772 }
5222595d 773 kvfree(name);
93cf93f1 774 break;
ff62af20 775 case Opt_test_dummy_encryption:
643fa961 776#ifdef CONFIG_FS_ENCRYPTION
7beb01f7 777 if (!f2fs_sb_has_encrypt(sbi)) {
dcbb4c10 778 f2fs_err(sbi, "Encrypt feature is off");
ff62af20
SY		 779 return -EINVAL;
780 }
781
782 F2FS_OPTION(sbi).test_dummy_encryption = true;
dcbb4c10 783 f2fs_info(sbi, "Test dummy encryption mode enabled");
ff62af20 784#else
dcbb4c10 785 f2fs_info(sbi, "Test dummy encryption mount option ignored");
ff62af20
SY		 786#endif
787 break;
4d3aed70
DR		 788 case Opt_checkpoint_disable_cap_perc:
789 if (args->from && match_int(args, &arg))
4354994f 790 return -EINVAL;
4d3aed70
DR		 791 if (arg < 0 || arg > 100)
792 return -EINVAL;
793 if (arg == 100)
794 F2FS_OPTION(sbi).unusable_cap =
795 sbi->user_block_count;
796 else
797 F2FS_OPTION(sbi).unusable_cap =
798 (sbi->user_block_count / 100) * arg;
799 set_opt(sbi, DISABLE_CHECKPOINT);
800 break;
801 case Opt_checkpoint_disable_cap:
802 if (args->from && match_int(args, &arg))
803 return -EINVAL;
804 F2FS_OPTION(sbi).unusable_cap = arg;
805 set_opt(sbi, DISABLE_CHECKPOINT);
806 break;
807 case Opt_checkpoint_disable:
808 set_opt(sbi, DISABLE_CHECKPOINT);
809 break;
810 case Opt_checkpoint_enable:
811 clear_opt(sbi, DISABLE_CHECKPOINT);
4354994f 812 break;
696c018c 813 default:
dcbb4c10
JP		 814 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
815 p);
696c018c
NJ		 816 return -EINVAL;
817 }
818 }
4b2414d0
CY		 819#ifdef CONFIG_QUOTA
820 if (f2fs_check_quota_options(sbi))
821 return -EINVAL;
00960c2c 822#else
7beb01f7 823 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 824 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
00960c2c
SY		 825 return -EINVAL;
826 }
7beb01f7 827 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 828 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
4ddc1b28
CY		 829 return -EINVAL;
830 }
4b2414d0 831#endif
5aba5430
DR		 832#ifndef CONFIG_UNICODE
833 if (f2fs_sb_has_casefold(sbi)) {
834 f2fs_err(sbi,
835 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
836 return -EINVAL;
837 }
838#endif
ec91538d
JK		 839
840 if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
dcbb4c10
JP		 841 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
842 F2FS_IO_SIZE_KB(sbi));
ec91538d
JK		 843 return -EINVAL;
844 }
6afc662e
CY		 845
846 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
70db5b04
JK		 847 int min_size, max_size;
848
7beb01f7
CY		 849 if (!f2fs_sb_has_extra_attr(sbi) ||
850 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
dcbb4c10 851 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
4d817ae0
CY		 852 return -EINVAL;
853 }
6afc662e 854 if (!test_opt(sbi, INLINE_XATTR)) {
dcbb4c10 855 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
6afc662e
CY		 856 return -EINVAL;
857 }
70db5b04
JK		 858
859 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
dd6c89b5 860 max_size = MAX_INLINE_XATTR_SIZE;
70db5b04
JK		 861
862 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
863 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
dcbb4c10
JP		 864 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
865 min_size, max_size);
6afc662e
CY		 866 return -EINVAL;
867 }
868 }
0cdd3195 869
4354994f 870 if (test_opt(sbi, DISABLE_CHECKPOINT) && test_opt(sbi, LFS)) {
dcbb4c10 871 f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
4354994f
DR		 872 return -EINVAL;
873 }
874
0cdd3195
HL		 875 /* Not pass down write hints if the number of active logs is lesser
876 * than NR_CURSEG_TYPE.
877 */
63189b78
CY		 878 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
879 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 880 return 0;
881}
882
aff063e2
JK		 883static struct inode *f2fs_alloc_inode(struct super_block *sb)
884{
885 struct f2fs_inode_info *fi;
886
a0acdfe0 887 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 888 if (!fi)
889 return NULL;
890
891 init_once((void *) fi);
892
434720fa 893 /* Initialize f2fs-specific inode info */
204706c7 894 atomic_set(&fi->dirty_pages, 0);
d928bfbf 895 init_rwsem(&fi->i_sem);
2710fd7e 896 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 897 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 898 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 899 INIT_LIST_HEAD(&fi->inmem_pages);
900 mutex_init(&fi->inmem_lock);
b2532c69
CY		 901 init_rwsem(&fi->i_gc_rwsem[READ]);
902 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 903 init_rwsem(&fi->i_mmap_sem);
27161f13 904 init_rwsem(&fi->i_xattr_sem);
aff063e2 905
ab9fa662
JK		 906 /* Will be used by directory only */
907 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 908
aff063e2
JK		 909 return &fi->vfs_inode;
910}
911
531ad7d5
JK		 912static int f2fs_drop_inode(struct inode *inode)
913{
a8933b6b 914 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
b8d96a30 915 int ret;
a8933b6b
CY		 916
917 /*
918 * during filesystem shutdown, if checkpoint is disabled,
919 * drop useless meta/node dirty pages.
920 */
921 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
922 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
923 inode->i_ino == F2FS_META_INO(sbi)) {
924 trace_f2fs_drop_inode(inode, 1);
925 return 1;
926 }
927 }
928
531ad7d5
JK		 929 /*
930 * This is to avoid a deadlock condition like below.
931 * writeback_single_inode(inode)
932 * - f2fs_write_data_page
933 * - f2fs_gc -> iput -> evict
934 * - inode_wait_for_writeback(inode)
935 */
0f18b462 936 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 937 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 938 /* to avoid evict_inode call simultaneously */
939 atomic_inc(&inode->i_count);
06e1bc05
JK		 940 spin_unlock(&inode->i_lock);
941
942 /* some remained atomic pages should discarded */
943 if (f2fs_is_atomic_file(inode))
4d57b86d 944 f2fs_drop_inmem_pages(inode);
06e1bc05 945
3e72f721
JK		 946 /* should remain fi->extent_tree for writepage */
947 f2fs_destroy_extent_node(inode);
948
06e1bc05 949 sb_start_intwrite(inode->i_sb);
fc9581c8 950 f2fs_i_size_write(inode, 0);
06e1bc05 951
a0770e13 952 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
953 inode, NULL, 0, DATA);
954 truncate_inode_pages_final(inode->i_mapping);
955
06e1bc05 956 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 957 f2fs_truncate(inode);
06e1bc05
JK		 958
959 sb_end_intwrite(inode->i_sb);
960
06e1bc05 961 spin_lock(&inode->i_lock);
3e72f721 962 atomic_dec(&inode->i_count);
06e1bc05 963 }
b8d96a30 964 trace_f2fs_drop_inode(inode, 0);
531ad7d5 965 return 0;
06e1bc05 966 }
b8d96a30 967 ret = generic_drop_inode(inode);
8ce589c7
EB		 968 if (!ret)
969 ret = fscrypt_drop_inode(inode);
b8d96a30
HP		 970 trace_f2fs_drop_inode(inode, ret);
971 return ret;
531ad7d5
JK		 972}
973
7c45729a 974int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 975{
0f18b462 976 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 977 int ret = 0;
0f18b462 978
0f18b462
JK		 979 spin_lock(&sbi->inode_lock[DIRTY_META]);
980 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 981 ret = 1;
982 } else {
983 set_inode_flag(inode, FI_DIRTY_INODE);
984 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 985 }
7c45729a
JK		 986 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
987 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 988 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 989 inc_page_count(sbi, F2FS_DIRTY_IMETA);
990 }
338bbfa0 991 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 992 return ret;
0f18b462
JK		 993}
994
995void f2fs_inode_synced(struct inode *inode)
996{
997 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
998
999 spin_lock(&sbi->inode_lock[DIRTY_META]);
1000 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1001 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1002 return;
1003 }
7c45729a
JK		 1004 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1005 list_del_init(&F2FS_I(inode)->gdirty_list);
1006 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1007 }
0f18b462 1008 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 1009 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 1010 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 1011 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 1012}
1013
b56ab837
JK		 1014/*
1015 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1016 *
1017 * We should call set_dirty_inode to write the dirty inode through write_inode.
1018 */
1019static void f2fs_dirty_inode(struct inode *inode, int flags)
1020{
1021 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1022
1023 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1024 inode->i_ino == F2FS_META_INO(sbi))
1025 return;
1026
1027 if (flags == I_DIRTY_TIME)
1028 return;
1029
1030 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1031 clear_inode_flag(inode, FI_AUTO_RECOVER);
1032
7c45729a 1033 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 1034}
1035
d01718a0 1036static void f2fs_free_inode(struct inode *inode)
aff063e2 1037{
2c58d548 1038 fscrypt_free_inode(inode);
aff063e2
JK		 1039 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1040}
1041
523be8a6
JK		 1042static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1043{
41382ec4 1044 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 1045 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 1046}
1047
3c62be17
JK		 1048static void destroy_device_list(struct f2fs_sb_info *sbi)
1049{
1050 int i;
1051
1052 for (i = 0; i < sbi->s_ndevs; i++) {
1053 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1054#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1055 kvfree(FDEV(i).blkz_seq);
3c62be17
JK		 1056#endif
1057 }
5222595d 1058 kvfree(sbi->devs);
3c62be17
JK		 1059}
1060
aff063e2
JK		 1061static void f2fs_put_super(struct super_block *sb)
1062{
1063 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1064 int i;
cf5c759f 1065 bool dropped;
aff063e2 1066
0abd675e 1067 f2fs_quota_off_umount(sb);
aff063e2 1068
2658e50d
JK		 1069 /* prevent remaining shrinker jobs */
1070 mutex_lock(&sbi->umount_mutex);
1071
85dc2f2c
JK		 1072 /*
1073 * We don't need to do checkpoint when superblock is clean.
1074 * But, the previous checkpoint was not done by umount, it needs to do
1075 * clean checkpoint again.
1076 */
4354994f
DR		 1077 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1078 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1079 struct cp_control cpc = {
1080 .reason = CP_UMOUNT,
1081 };
4d57b86d 1082 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1083 }
aff063e2 1084
4e6a8d9b 1085 /* be sure to wait for any on-going discard commands */
03f2c02d 1086 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1087
7d20c8ab
CY		 1088 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1089 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1090 struct cp_control cpc = {
1091 .reason = CP_UMOUNT | CP_TRIMMED,
1092 };
4d57b86d 1093 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1094 }
1095
cf779cab
JK		 1096 /*
1097 * normally superblock is clean, so we need to release this.
1098 * In addition, EIO will skip do checkpoint, we need this as well.
1099 */
4d57b86d 1100 f2fs_release_ino_entry(sbi, true);
6f12ac25 1101
2658e50d
JK		 1102 f2fs_leave_shrinker(sbi);
1103 mutex_unlock(&sbi->umount_mutex);
1104
17c19120 1105 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1106 f2fs_flush_merged_writes(sbi);
17c19120 1107
50fa53ec
CY		 1108 f2fs_wait_on_all_pages_writeback(sbi);
1109
1110 f2fs_bug_on(sbi, sbi->fsync_node_num);
1111
aff063e2 1112 iput(sbi->node_inode);
7c77bf7d
JK		 1113 sbi->node_inode = NULL;
1114
aff063e2 1115 iput(sbi->meta_inode);
7c77bf7d 1116 sbi->meta_inode = NULL;
aff063e2 1117
60aa4d55
ST		 1118 /*
1119 * iput() can update stat information, if f2fs_write_checkpoint()
1120 * above failed with error.
1121 */
1122 f2fs_destroy_stats(sbi);
1123
aff063e2 1124 /* destroy f2fs internal modules */
4d57b86d
CY		 1125 f2fs_destroy_node_manager(sbi);
1126 f2fs_destroy_segment_manager(sbi);
aff063e2 1127
5222595d 1128 kvfree(sbi->ckpt);
a398101a 1129
dc6b2055 1130 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1131
1132 sb->s_fs_info = NULL;
43b6573b
KM		 1133 if (sbi->s_chksum_driver)
1134 crypto_free_shash(sbi->s_chksum_driver);
5222595d 1135 kvfree(sbi->raw_super);
523be8a6 1136
3c62be17 1137 destroy_device_list(sbi);
b6895e8f 1138 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1139#ifdef CONFIG_QUOTA
1140 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1141 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1142#endif
523be8a6 1143 destroy_percpu_info(sbi);
a912b54d 1144 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 1145 kvfree(sbi->write_io[i]);
5aba5430
DR		 1146#ifdef CONFIG_UNICODE
1147 utf8_unload(sbi->s_encoding);
1148#endif
5222595d 1149 kvfree(sbi);
aff063e2
JK		 1150}
1151
1152int f2fs_sync_fs(struct super_block *sb, int sync)
1153{
1154 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1155 int err = 0;
aff063e2 1156
1f227a3e
JK		 1157 if (unlikely(f2fs_cp_error(sbi)))
1158 return 0;
4354994f
DR		 1159 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1160 return 0;
1f227a3e 1161
a2a4a7e4
NJ		 1162 trace_f2fs_sync_fs(sb, sync);
1163
4b2414d0
CY		 1164 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1165 return -EAGAIN;
1166
b7473754 1167 if (sync) {
d5053a34
JK		 1168 struct cp_control cpc;
1169
119ee914
JK		 1170 cpc.reason = __get_cp_reason(sbi);
1171
b7473754 1172 mutex_lock(&sbi->gc_mutex);
4d57b86d 1173 err = f2fs_write_checkpoint(sbi, &cpc);
b7473754 1174 mutex_unlock(&sbi->gc_mutex);
b7473754 1175 }
05ca3632 1176 f2fs_trace_ios(NULL, 1);
aff063e2 1177
c34f42e2 1178 return err;
aff063e2
JK		 1179}
1180
d6212a5f
CL		 1181static int f2fs_freeze(struct super_block *sb)
1182{
77888c1e 1183 if (f2fs_readonly(sb))
d6212a5f
CL		 1184 return 0;
1185
b4b9d34c
JK		 1186 /* IO error happened before */
1187 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1188 return -EIO;
1189
1190 /* must be clean, since sync_filesystem() was already called */
1191 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1192 return -EINVAL;
1193 return 0;
d6212a5f
CL		 1194}
1195
1196static int f2fs_unfreeze(struct super_block *sb)
1197{
1198 return 0;
1199}
1200
ddc34e32
CY		 1201#ifdef CONFIG_QUOTA
1202static int f2fs_statfs_project(struct super_block *sb,
1203 kprojid_t projid, struct kstatfs *buf)
1204{
1205 struct kqid qid;
1206 struct dquot *dquot;
1207 u64 limit;
1208 u64 curblock;
1209
1210 qid = make_kqid_projid(projid);
1211 dquot = dqget(sb, qid);
1212 if (IS_ERR(dquot))
1213 return PTR_ERR(dquot);
955ac6e5 1214 spin_lock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1215
1216 limit = (dquot->dq_dqb.dqb_bsoftlimit ?
1217 dquot->dq_dqb.dqb_bsoftlimit :
1218 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
1219 if (limit && buf->f_blocks > limit) {
1220 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1221 buf->f_blocks = limit;
1222 buf->f_bfree = buf->f_bavail =
1223 (buf->f_blocks > curblock) ?
1224 (buf->f_blocks - curblock) : 0;
1225 }
1226
1227 limit = dquot->dq_dqb.dqb_isoftlimit ?
1228 dquot->dq_dqb.dqb_isoftlimit :
1229 dquot->dq_dqb.dqb_ihardlimit;
1230 if (limit && buf->f_files > limit) {
1231 buf->f_files = limit;
1232 buf->f_ffree =
1233 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1234 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1235 }
1236
955ac6e5 1237 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1238 dqput(dquot);
1239 return 0;
1240}
1241#endif
1242
aff063e2
JK		 1243static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1244{
1245 struct super_block *sb = dentry->d_sb;
1246 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1247 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1248 block_t total_count, user_block_count, start_count;
0cc091d0 1249 u64 avail_node_count;
aff063e2
JK		 1250
1251 total_count = le64_to_cpu(sbi->raw_super->block_count);
1252 user_block_count = sbi->user_block_count;
1253 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1254 buf->f_type = F2FS_SUPER_MAGIC;
1255 buf->f_bsize = sbi->blocksize;
1256
1257 buf->f_blocks = total_count - start_count;
f66c027e 1258 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1259 sbi->current_reserved_blocks;
c9c8ed50
CY		 1260
1261 spin_lock(&sbi->stat_lock);
4354994f
DR		 1262 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1263 buf->f_bfree = 0;
1264 else
1265 buf->f_bfree -= sbi->unusable_block_count;
c9c8ed50 1266 spin_unlock(&sbi->stat_lock);
4354994f 1267
63189b78
CY		 1268 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1269 buf->f_bavail = buf->f_bfree -
1270 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1271 else
1272 buf->f_bavail = 0;
aff063e2 1273
27cae0bc 1274 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1275
1276 if (avail_node_count > user_block_count) {
1277 buf->f_files = user_block_count;
1278 buf->f_ffree = buf->f_bavail;
1279 } else {
1280 buf->f_files = avail_node_count;
1281 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1282 buf->f_bavail);
1283 }
aff063e2 1284
5a20d339 1285 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1286 buf->f_fsid.val[0] = (u32)id;
1287 buf->f_fsid.val[1] = (u32)(id >> 32);
1288
ddc34e32
CY		 1289#ifdef CONFIG_QUOTA
1290 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1291 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1292 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1293 }
1294#endif
aff063e2
JK		 1295 return 0;
1296}
1297
4b2414d0
CY		 1298static inline void f2fs_show_quota_options(struct seq_file *seq,
1299 struct super_block *sb)
1300{
1301#ifdef CONFIG_QUOTA
1302 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1303
63189b78 1304 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1305 char *fmtname = "";
1306
63189b78 1307 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1308 case QFMT_VFS_OLD:
1309 fmtname = "vfsold";
1310 break;
1311 case QFMT_VFS_V0:
1312 fmtname = "vfsv0";
1313 break;
1314 case QFMT_VFS_V1:
1315 fmtname = "vfsv1";
1316 break;
1317 }
1318 seq_printf(seq, ",jqfmt=%s", fmtname);
1319 }
1320
63189b78
CY		 1321 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1322 seq_show_option(seq, "usrjquota",
1323 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1324
63189b78
CY		 1325 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1326 seq_show_option(seq, "grpjquota",
1327 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1328
63189b78
CY		 1329 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1330 seq_show_option(seq, "prjjquota",
1331 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1332#endif
1333}
1334
aff063e2
JK		 1335static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1336{
1337 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1338
6aefd93b
JK		 1339 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1340 if (test_opt(sbi, FORCE_FG_GC))
1341 seq_printf(seq, ",background_gc=%s", "sync");
1342 else
1343 seq_printf(seq, ",background_gc=%s", "on");
1344 } else {
696c018c 1345 seq_printf(seq, ",background_gc=%s", "off");
6aefd93b 1346 }
aff063e2
JK		 1347 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1348 seq_puts(seq, ",disable_roll_forward");
1349 if (test_opt(sbi, DISCARD))
1350 seq_puts(seq, ",discard");
81621f97
ST		 1351 else
1352 seq_puts(seq, ",nodiscard");
aff063e2 1353 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1354 seq_puts(seq, ",no_heap");
1355 else
1356 seq_puts(seq, ",heap");
aff063e2
JK		 1357#ifdef CONFIG_F2FS_FS_XATTR
1358 if (test_opt(sbi, XATTR_USER))
1359 seq_puts(seq, ",user_xattr");
1360 else
1361 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1362 if (test_opt(sbi, INLINE_XATTR))
1363 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1364 else
1365 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1366 if (test_opt(sbi, INLINE_XATTR_SIZE))
1367 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1368 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1369#endif
1370#ifdef CONFIG_F2FS_FS_POSIX_ACL
1371 if (test_opt(sbi, POSIX_ACL))
1372 seq_puts(seq, ",acl");
1373 else
1374 seq_puts(seq, ",noacl");
1375#endif
1376 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1377 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1378 if (test_opt(sbi, INLINE_DATA))
1379 seq_puts(seq, ",inline_data");
75342797
WL		 1380 else
1381 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1382 if (test_opt(sbi, INLINE_DENTRY))
1383 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1384 else
1385 seq_puts(seq, ",noinline_dentry");
b270ad6f 1386 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1387 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1388 if (test_opt(sbi, NOBARRIER))
1389 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1390 if (test_opt(sbi, FASTBOOT))
1391 seq_puts(seq, ",fastboot");
89672159
CY		 1392 if (test_opt(sbi, EXTENT_CACHE))
1393 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1394 else
1395 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1396 if (test_opt(sbi, DATA_FLUSH))
1397 seq_puts(seq, ",data_flush");
36abef4e
JK		 1398
1399 seq_puts(seq, ",mode=");
1400 if (test_opt(sbi, ADAPTIVE))
1401 seq_puts(seq, "adaptive");
1402 else if (test_opt(sbi, LFS))
1403 seq_puts(seq, "lfs");
63189b78 1404 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1405 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1406 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1407 F2FS_OPTION(sbi).root_reserved_blocks,
1408 from_kuid_munged(&init_user_ns,
1409 F2FS_OPTION(sbi).s_resuid),
1410 from_kgid_munged(&init_user_ns,
1411 F2FS_OPTION(sbi).s_resgid));
ec91538d 1412 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1413 seq_printf(seq, ",io_bits=%u",
1414 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1415#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1416 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1417 seq_printf(seq, ",fault_injection=%u",
63189b78 1418 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1419 seq_printf(seq, ",fault_type=%u",
1420 F2FS_OPTION(sbi).fault_info.inject_type);
1421 }
0cc0dec2 1422#endif
0abd675e 1423#ifdef CONFIG_QUOTA
4b2414d0
CY		 1424 if (test_opt(sbi, QUOTA))
1425 seq_puts(seq, ",quota");
0abd675e
CY		 1426 if (test_opt(sbi, USRQUOTA))
1427 seq_puts(seq, ",usrquota");
1428 if (test_opt(sbi, GRPQUOTA))
1429 seq_puts(seq, ",grpquota");
5c57132e
CY		 1430 if (test_opt(sbi, PRJQUOTA))
1431 seq_puts(seq, ",prjquota");
0cc0dec2 1432#endif
4b2414d0 1433 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1434 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1435 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1436 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1437 seq_printf(seq, ",whint_mode=%s", "fs-based");
643fa961 1438#ifdef CONFIG_FS_ENCRYPTION
ff62af20
SY		 1439 if (F2FS_OPTION(sbi).test_dummy_encryption)
1440 seq_puts(seq, ",test_dummy_encryption");
1441#endif
aff063e2 1442
63189b78 1443 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1444 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1445 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1446 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1447
4354994f 1448 if (test_opt(sbi, DISABLE_CHECKPOINT))
4d3aed70
DR		 1449 seq_printf(seq, ",checkpoint=disable:%u",
1450 F2FS_OPTION(sbi).unusable_cap);
63189b78 1451 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1452 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1453 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1454 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1455 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1456 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
aff063e2
JK		 1457 return 0;
1458}
1459
498c5e9f
YH		 1460static void default_options(struct f2fs_sb_info *sbi)
1461{
1462 /* init some FS parameters */
63189b78
CY		 1463 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1464 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1465 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1466 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1467 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1468 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1469 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1470 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
498c5e9f
YH		 1471
1472 set_opt(sbi, BG_GC);
39133a50 1473 set_opt(sbi, INLINE_XATTR);
498c5e9f 1474 set_opt(sbi, INLINE_DATA);
97c1794a 1475 set_opt(sbi, INLINE_DENTRY);
3e72f721 1476 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1477 set_opt(sbi, NOHEAP);
4354994f 1478 clear_opt(sbi, DISABLE_CHECKPOINT);
4d3aed70 1479 F2FS_OPTION(sbi).unusable_cap = 0;
1751e8a6 1480 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1481 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1482 set_opt(sbi, DISCARD);
7beb01f7 1483 if (f2fs_sb_has_blkzoned(sbi))
a39e5365
CY		 1484 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1485 else
52763a4b 1486 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
498c5e9f
YH		 1487
1488#ifdef CONFIG_F2FS_FS_XATTR
1489 set_opt(sbi, XATTR_USER);
1490#endif
1491#ifdef CONFIG_F2FS_FS_POSIX_ACL
1492 set_opt(sbi, POSIX_ACL);
1493#endif
36dbd328 1494
d494500a 1495 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1496}
1497
ea676733
JK		 1498#ifdef CONFIG_QUOTA
1499static int f2fs_enable_quotas(struct super_block *sb);
1500#endif
4354994f
DR		 1501
1502static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1503{
812a9597 1504 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1505 struct cp_control cpc;
812a9597
JK		 1506 int err = 0;
1507 int ret;
4d3aed70 1508 block_t unusable;
4354994f 1509
812a9597 1510 if (s_flags & SB_RDONLY) {
dcbb4c10 1511 f2fs_err(sbi, "checkpoint=disable on readonly fs");
812a9597
JK		 1512 return -EINVAL;
1513 }
4354994f
DR		 1514 sbi->sb->s_flags |= SB_ACTIVE;
1515
4354994f
DR		 1516 f2fs_update_time(sbi, DISABLE_TIME);
1517
1518 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
8f31b466 1519 mutex_lock(&sbi->gc_mutex);
4354994f 1520 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1521 if (err == -ENODATA) {
1522 err = 0;
4354994f 1523 break;
812a9597 1524 }
8f31b466 1525 if (err && err != -EAGAIN)
812a9597 1526 break;
4354994f 1527 }
4354994f 1528
812a9597
JK		 1529 ret = sync_filesystem(sbi->sb);
1530 if (ret || err) {
1531 err = ret ? ret: err;
1532 goto restore_flag;
1533 }
4354994f 1534
4d3aed70
DR		 1535 unusable = f2fs_get_unusable_blocks(sbi);
1536 if (f2fs_disable_cp_again(sbi, unusable)) {
812a9597
JK		 1537 err = -EAGAIN;
1538 goto restore_flag;
1539 }
4354994f
DR		 1540
1541 mutex_lock(&sbi->gc_mutex);
1542 cpc.reason = CP_PAUSE;
1543 set_sbi_flag(sbi, SBI_CP_DISABLED);
896285ad
CY		 1544 err = f2fs_write_checkpoint(sbi, &cpc);
1545 if (err)
1546 goto out_unlock;
4354994f 1547
c9c8ed50 1548 spin_lock(&sbi->stat_lock);
4d3aed70 1549 sbi->unusable_block_count = unusable;
c9c8ed50
CY		 1550 spin_unlock(&sbi->stat_lock);
1551
896285ad 1552out_unlock:
4354994f 1553 mutex_unlock(&sbi->gc_mutex);
812a9597
JK		 1554restore_flag:
1555 sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */
1556 return err;
4354994f
DR		 1557}
1558
1559static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1560{
1561 mutex_lock(&sbi->gc_mutex);
1562 f2fs_dirty_to_prefree(sbi);
1563
1564 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1565 set_sbi_flag(sbi, SBI_IS_DIRTY);
1566 mutex_unlock(&sbi->gc_mutex);
1567
1568 f2fs_sync_fs(sbi->sb, 1);
1569}
1570
696c018c
NJ		 1571static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1572{
1573 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1574 struct f2fs_mount_info org_mount_opt;
0abd675e 1575 unsigned long old_sb_flags;
63189b78 1576 int err;
876dc59e
GZ		 1577 bool need_restart_gc = false;
1578 bool need_stop_gc = false;
9cd81ce3 1579 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f 1580 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1f78adfa 1581 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
4354994f 1582 bool checkpoint_changed;
4b2414d0 1583#ifdef CONFIG_QUOTA
4b2414d0
CY		 1584 int i, j;
1585#endif
696c018c
NJ		 1586
1587 /*
1588 * Save the old mount options in case we
1589 * need to restore them.
1590 */
1591 org_mount_opt = sbi->mount_opt;
0abd675e 1592 old_sb_flags = sb->s_flags;
696c018c 1593
4b2414d0 1594#ifdef CONFIG_QUOTA
63189b78 1595 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1596 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1597 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1598 org_mount_opt.s_qf_names[i] =
1599 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1600 GFP_KERNEL);
1601 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1602 for (j = 0; j < i; j++)
5222595d 1603 kvfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1604 return -ENOMEM;
1605 }
1606 } else {
63189b78 1607 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1608 }
1609 }
1610#endif
1611
df728b0f 1612 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1613 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f 1614 err = f2fs_commit_super(sbi, false);
dcbb4c10
JP		 1615 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1616 err);
df728b0f
JK		 1617 if (!err)
1618 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1619 }
1620
498c5e9f 1621 default_options(sbi);
26666c8a 1622
696c018c
NJ		 1623 /* parse mount options */
1624 err = parse_options(sb, data);
1625 if (err)
1626 goto restore_opts;
4354994f
DR		 1627 checkpoint_changed =
1628 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1629
1630 /*
1631 * Previous and new state of filesystem is RO,
876dc59e 1632 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1633 */
1751e8a6 1634 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1635 goto skip;
1636
ea676733 1637#ifdef CONFIG_QUOTA
1751e8a6 1638 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1639 err = dquot_suspend(sb, -1);
1640 if (err < 0)
1641 goto restore_opts;
4354994f 1642 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1643 /* dquot_resume needs RW */
1751e8a6 1644 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1645 if (sb_any_quota_suspended(sb)) {
1646 dquot_resume(sb, -1);
7beb01f7 1647 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1648 err = f2fs_enable_quotas(sb);
1649 if (err)
1650 goto restore_opts;
1651 }
0abd675e 1652 }
ea676733 1653#endif
9cd81ce3
CY		 1654 /* disallow enable/disable extent_cache dynamically */
1655 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1656 err = -EINVAL;
dcbb4c10 1657 f2fs_warn(sbi, "switch extent_cache option is not allowed");
9cd81ce3
CY		 1658 goto restore_opts;
1659 }
1660
1f78adfa
CY		 1661 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
1662 err = -EINVAL;
1663 f2fs_warn(sbi, "switch io_bits option is not allowed");
1664 goto restore_opts;
1665 }
1666
4354994f
DR		 1667 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1668 err = -EINVAL;
dcbb4c10 1669 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
4354994f
DR		 1670 goto restore_opts;
1671 }
1672
696c018c
NJ		 1673 /*
1674 * We stop the GC thread if FS is mounted as RO
1675 * or if background_gc = off is passed in mount
1676 * option. Also sync the filesystem.
1677 */
1751e8a6 1678 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
696c018c 1679 if (sbi->gc_thread) {
4d57b86d 1680 f2fs_stop_gc_thread(sbi);
876dc59e 1681 need_restart_gc = true;
696c018c 1682 }
aba291b3 1683 } else if (!sbi->gc_thread) {
4d57b86d 1684 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1685 if (err)
1686 goto restore_opts;
876dc59e
GZ		 1687 need_stop_gc = true;
1688 }
1689
63189b78
CY		 1690 if (*flags & SB_RDONLY ||
1691 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1692 writeback_inodes_sb(sb, WB_REASON_SYNC);
1693 sync_inodes_sb(sb);
1694
1695 set_sbi_flag(sbi, SBI_IS_DIRTY);
1696 set_sbi_flag(sbi, SBI_IS_CLOSE);
1697 f2fs_sync_fs(sb, 1);
1698 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1699 }
1700
4354994f
DR		 1701 if (checkpoint_changed) {
1702 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1703 err = f2fs_disable_checkpoint(sbi);
1704 if (err)
1705 goto restore_gc;
1706 } else {
1707 f2fs_enable_checkpoint(sbi);
1708 }
1709 }
1710
876dc59e
GZ		 1711 /*
1712 * We stop issue flush thread if FS is mounted as RO
1713 * or if flush_merge is not passed in mount option.
1714 */
1751e8a6 1715 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1716 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1717 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1718 } else {
4d57b86d 1719 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1720 if (err)
a688b9d9 1721 goto restore_gc;
696c018c
NJ		 1722 }
1723skip:
4b2414d0
CY		 1724#ifdef CONFIG_QUOTA
1725 /* Release old quota file names */
1726 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1727 kvfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1728#endif
696c018c 1729 /* Update the POSIXACL Flag */
1751e8a6
LT		 1730 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1731 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1732
7e65be49 1733 limit_reserve_root(sbi);
095680f2 1734 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1735 return 0;
876dc59e
GZ		 1736restore_gc:
1737 if (need_restart_gc) {
4d57b86d 1738 if (f2fs_start_gc_thread(sbi))
dcbb4c10 1739 f2fs_warn(sbi, "background gc thread has stopped");
876dc59e 1740 } else if (need_stop_gc) {
4d57b86d 1741 f2fs_stop_gc_thread(sbi);
876dc59e 1742 }
696c018c 1743restore_opts:
4b2414d0 1744#ifdef CONFIG_QUOTA
63189b78 1745 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1746 for (i = 0; i < MAXQUOTAS; i++) {
5222595d 1747 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 1748 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1749 }
1750#endif
696c018c 1751 sbi->mount_opt = org_mount_opt;
0abd675e 1752 sb->s_flags = old_sb_flags;
696c018c
NJ		 1753 return err;
1754}
1755
0abd675e
CY		 1756#ifdef CONFIG_QUOTA
1757/* Read data from quotafile */
1758static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1759 size_t len, loff_t off)
1760{
1761 struct inode *inode = sb_dqopt(sb)->files[type];
1762 struct address_space *mapping = inode->i_mapping;
1763 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1764 int offset = off & (sb->s_blocksize - 1);
1765 int tocopy;
1766 size_t toread;
1767 loff_t i_size = i_size_read(inode);
1768 struct page *page;
1769 char *kaddr;
1770
1771 if (off > i_size)
1772 return 0;
1773
1774 if (off + len > i_size)
1775 len = i_size - off;
1776 toread = len;
1777 while (toread > 0) {
1778 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1779repeat:
02117b8a 1780 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1781 if (IS_ERR(page)) {
1782 if (PTR_ERR(page) == -ENOMEM) {
1783 congestion_wait(BLK_RW_ASYNC, HZ/50);
1784 goto repeat;
1785 }
af033b2a 1786 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1787 return PTR_ERR(page);
4e46a023 1788 }
0abd675e
CY		 1789
1790 lock_page(page);
1791
1792 if (unlikely(page->mapping != mapping)) {
1793 f2fs_put_page(page, 1);
1794 goto repeat;
1795 }
1796 if (unlikely(!PageUptodate(page))) {
1797 f2fs_put_page(page, 1);
af033b2a 1798 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1799 return -EIO;
1800 }
1801
1802 kaddr = kmap_atomic(page);
1803 memcpy(data, kaddr + offset, tocopy);
1804 kunmap_atomic(kaddr);
1805 f2fs_put_page(page, 1);
1806
1807 offset = 0;
1808 toread -= tocopy;
1809 data += tocopy;
1810 blkidx++;
1811 }
1812 return len;
1813}
1814
1815/* Write to quotafile */
1816static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1817 const char *data, size_t len, loff_t off)
1818{
1819 struct inode *inode = sb_dqopt(sb)->files[type];
1820 struct address_space *mapping = inode->i_mapping;
1821 const struct address_space_operations *a_ops = mapping->a_ops;
1822 int offset = off & (sb->s_blocksize - 1);
1823 size_t towrite = len;
1824 struct page *page;
1825 char *kaddr;
1826 int err = 0;
1827 int tocopy;
1828
1829 while (towrite > 0) {
1830 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1831 towrite);
4e46a023 1832retry:
0abd675e
CY		 1833 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1834 &page, NULL);
4e46a023
JK		 1835 if (unlikely(err)) {
1836 if (err == -ENOMEM) {
1837 congestion_wait(BLK_RW_ASYNC, HZ/50);
1838 goto retry;
1839 }
af033b2a 1840 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1841 break;
4e46a023 1842 }
0abd675e
CY		 1843
1844 kaddr = kmap_atomic(page);
1845 memcpy(kaddr + offset, data, tocopy);
1846 kunmap_atomic(kaddr);
1847 flush_dcache_page(page);
1848
1849 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1850 page, NULL);
1851 offset = 0;
1852 towrite -= tocopy;
1853 off += tocopy;
1854 data += tocopy;
1855 cond_resched();
1856 }
1857
1858 if (len == towrite)
6e5b5d41 1859 return err;
0abd675e
CY		 1860 inode->i_mtime = inode->i_ctime = current_time(inode);
1861 f2fs_mark_inode_dirty_sync(inode, false);
1862 return len - towrite;
1863}
1864
1865static struct dquot **f2fs_get_dquots(struct inode *inode)
1866{
1867 return F2FS_I(inode)->i_dquot;
1868}
1869
1870static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1871{
1872 return &F2FS_I(inode)->i_reserved_quota;
1873}
1874
4b2414d0
CY		 1875static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1876{
af033b2a 1877 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1878 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
af033b2a
CY		 1879 return 0;
1880 }
1881
63189b78
CY		 1882 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1883 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1884}
1885
ea676733 1886int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1887{
ea676733
JK		 1888 int enabled = 0;
1889 int i, err;
1890
7beb01f7 1891 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 1892 err = f2fs_enable_quotas(sbi->sb);
1893 if (err) {
dcbb4c10 1894 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
ea676733
JK		 1895 return 0;
1896 }
1897 return 1;
1898 }
4b2414d0
CY		 1899
1900 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 1901 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 1902 err = f2fs_quota_on_mount(sbi, i);
1903 if (!err) {
1904 enabled = 1;
1905 continue;
1906 }
dcbb4c10
JP		 1907 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
1908 err, i);
4b2414d0
CY		 1909 }
1910 }
ea676733
JK		 1911 return enabled;
1912}
1913
1914static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1915 unsigned int flags)
1916{
1917 struct inode *qf_inode;
1918 unsigned long qf_inum;
1919 int err;
1920
7beb01f7 1921 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 1922
1923 qf_inum = f2fs_qf_ino(sb, type);
1924 if (!qf_inum)
1925 return -EPERM;
1926
1927 qf_inode = f2fs_iget(sb, qf_inum);
1928 if (IS_ERR(qf_inode)) {
dcbb4c10 1929 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
ea676733
JK		 1930 return PTR_ERR(qf_inode);
1931 }
1932
1933 /* Don't account quota for quota files to avoid recursion */
1934 qf_inode->i_flags |= S_NOQUOTA;
7212b95e 1935 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
ea676733
JK		 1936 iput(qf_inode);
1937 return err;
1938}
1939
1940static int f2fs_enable_quotas(struct super_block *sb)
1941{
dcbb4c10 1942 struct f2fs_sb_info *sbi = F2FS_SB(sb);
ea676733
JK		 1943 int type, err = 0;
1944 unsigned long qf_inum;
1945 bool quota_mopt[MAXQUOTAS] = {
dcbb4c10
JP		 1946 test_opt(sbi, USRQUOTA),
1947 test_opt(sbi, GRPQUOTA),
1948 test_opt(sbi, PRJQUOTA),
ea676733
JK		 1949 };
1950
af033b2a 1951 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1952 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
af033b2a
CY		 1953 return 0;
1954 }
1955
1956 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1957
ea676733
JK		 1958 for (type = 0; type < MAXQUOTAS; type++) {
1959 qf_inum = f2fs_qf_ino(sb, type);
1960 if (qf_inum) {
1961 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1962 DQUOT_USAGE_ENABLED |
1963 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1964 if (err) {
dcbb4c10
JP		 1965 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
1966 type, err);
ea676733
JK		 1967 for (type--; type >= 0; type--)
1968 dquot_quota_off(sb, type);
af033b2a
CY		 1969 set_sbi_flag(F2FS_SB(sb),
1970 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 1971 return err;
1972 }
4b2414d0
CY		 1973 }
1974 }
ea676733 1975 return 0;
4b2414d0
CY		 1976}
1977
af033b2a 1978int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 1979{
af033b2a 1980 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 1981 struct quota_info *dqopt = sb_dqopt(sb);
1982 int cnt;
1983 int ret;
1984
db6ec53b
JK		 1985 /*
1986 * do_quotactl
1987 * f2fs_quota_sync
1988 * down_read(quota_sem)
1989 * dquot_writeback_dquots()
1990 * f2fs_dquot_commit
1991 * block_operation
1992 * down_read(quota_sem)
1993 */
1994 f2fs_lock_op(sbi);
1995
1996 down_read(&sbi->quota_sem);
0abd675e
CY		 1997 ret = dquot_writeback_dquots(sb, type);
1998 if (ret)
af033b2a 1999 goto out;
0abd675e
CY		 2000
2001 /*
2002 * Now when everything is written we can discard the pagecache so
2003 * that userspace sees the changes.
2004 */
2005 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 2006 struct address_space *mapping;
2007
0abd675e
CY		 2008 if (type != -1 && cnt != type)
2009 continue;
2010 if (!sb_has_quota_active(sb, cnt))
2011 continue;
2012
af033b2a
CY		 2013 mapping = dqopt->files[cnt]->i_mapping;
2014
2015 ret = filemap_fdatawrite(mapping);
0abd675e 2016 if (ret)
af033b2a
CY		 2017 goto out;
2018
2019 /* if we are using journalled quota */
2020 if (is_journalled_quota(sbi))
2021 continue;
2022
2023 ret = filemap_fdatawait(mapping);
2024 if (ret)
2025 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 2026
2027 inode_lock(dqopt->files[cnt]);
2028 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
2029 inode_unlock(dqopt->files[cnt]);
2030 }
af033b2a
CY		 2031out:
2032 if (ret)
2033 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
db6ec53b
JK		 2034 up_read(&sbi->quota_sem);
2035 f2fs_unlock_op(sbi);
af033b2a 2036 return ret;
0abd675e
CY		 2037}
2038
2039static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2040 const struct path *path)
2041{
2042 struct inode *inode;
2043 int err;
2044
fe973b06
CY		 2045 /* if quota sysfile exists, deny enabling quota with specific file */
2046 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2047 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2048 return -EBUSY;
2049 }
2050
9a20d391 2051 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 2052 if (err)
2053 return err;
2054
2055 err = dquot_quota_on(sb, type, format_id, path);
2056 if (err)
2057 return err;
2058
2059 inode = d_inode(path->dentry);
2060
2061 inode_lock(inode);
59c84408 2062 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 2063 f2fs_set_inode_flags(inode);
0abd675e
CY		 2064 inode_unlock(inode);
2065 f2fs_mark_inode_dirty_sync(inode, false);
2066
2067 return 0;
2068}
2069
fe973b06 2070static int __f2fs_quota_off(struct super_block *sb, int type)
0abd675e
CY		 2071{
2072 struct inode *inode = sb_dqopt(sb)->files[type];
2073 int err;
2074
2075 if (!inode || !igrab(inode))
2076 return dquot_quota_off(sb, type);
2077
cda9cc59
YH		 2078 err = f2fs_quota_sync(sb, type);
2079 if (err)
2080 goto out_put;
0abd675e
CY		 2081
2082 err = dquot_quota_off(sb, type);
7beb01f7 2083 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2084 goto out_put;
2085
2086 inode_lock(inode);
59c84408 2087 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2088 f2fs_set_inode_flags(inode);
0abd675e
CY		 2089 inode_unlock(inode);
2090 f2fs_mark_inode_dirty_sync(inode, false);
2091out_put:
2092 iput(inode);
2093 return err;
2094}
2095
fe973b06
CY		 2096static int f2fs_quota_off(struct super_block *sb, int type)
2097{
2098 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2099 int err;
2100
2101 err = __f2fs_quota_off(sb, type);
2102
2103 /*
2104 * quotactl can shutdown journalled quota, result in inconsistence
2105 * between quota record and fs data by following updates, tag the
2106 * flag to let fsck be aware of it.
2107 */
2108 if (is_journalled_quota(sbi))
2109 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2110 return err;
2111}
2112
4b2414d0 2113void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2114{
2115 int type;
cda9cc59
YH		 2116 int err;
2117
2118 for (type = 0; type < MAXQUOTAS; type++) {
fe973b06 2119 err = __f2fs_quota_off(sb, type);
cda9cc59
YH		 2120 if (err) {
2121 int ret = dquot_quota_off(sb, type);
0abd675e 2122
dcbb4c10
JP		 2123 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2124 type, err, ret);
af033b2a 2125 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2126 }
2127 }
0e0667b6
JK		 2128 /*
2129 * In case of checkpoint=disable, we must flush quota blocks.
2130 * This can cause NULL exception for node_inode in end_io, since
2131 * put_super already dropped it.
2132 */
2133 sync_filesystem(sb);
0abd675e
CY		 2134}
2135
26b5a079
SY		 2136static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2137{
2138 struct quota_info *dqopt = sb_dqopt(sb);
2139 int type;
2140
2141 for (type = 0; type < MAXQUOTAS; type++) {
2142 if (!dqopt->files[type])
2143 continue;
2144 f2fs_inode_synced(dqopt->files[type]);
2145 }
2146}
2147
af033b2a
CY		 2148static int f2fs_dquot_commit(struct dquot *dquot)
2149{
db6ec53b 2150 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2151 int ret;
2152
db6ec53b 2153 down_read(&sbi->quota_sem);
af033b2a
CY		 2154 ret = dquot_commit(dquot);
2155 if (ret < 0)
db6ec53b
JK		 2156 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2157 up_read(&sbi->quota_sem);
af033b2a
CY		 2158 return ret;
2159}
2160
2161static int f2fs_dquot_acquire(struct dquot *dquot)
2162{
db6ec53b 2163 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2164 int ret;
2165
db6ec53b 2166 down_read(&sbi->quota_sem);
af033b2a
CY		 2167 ret = dquot_acquire(dquot);
2168 if (ret < 0)
db6ec53b
JK		 2169 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2170 up_read(&sbi->quota_sem);
af033b2a
CY		 2171 return ret;
2172}
2173
2174static int f2fs_dquot_release(struct dquot *dquot)
2175{
db6ec53b 2176 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2177 int ret;
2178
db6ec53b 2179 down_read(&sbi->quota_sem);
af033b2a
CY		 2180 ret = dquot_release(dquot);
2181 if (ret < 0)
db6ec53b
JK		 2182 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2183 up_read(&sbi->quota_sem);
af033b2a
CY		 2184 return ret;
2185}
2186
2187static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2188{
2189 struct super_block *sb = dquot->dq_sb;
2190 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2191 int ret;
2192
db6ec53b 2193 down_read(&sbi->quota_sem);
af033b2a
CY		 2194 ret = dquot_mark_dquot_dirty(dquot);
2195
2196 /* if we are using journalled quota */
2197 if (is_journalled_quota(sbi))
2198 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2199
db6ec53b 2200 up_read(&sbi->quota_sem);
af033b2a
CY		 2201 return ret;
2202}
2203
2204static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2205{
db6ec53b 2206 struct f2fs_sb_info *sbi = F2FS_SB(sb);
af033b2a
CY		 2207 int ret;
2208
db6ec53b 2209 down_read(&sbi->quota_sem);
af033b2a
CY		 2210 ret = dquot_commit_info(sb, type);
2211 if (ret < 0)
db6ec53b
JK		 2212 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2213 up_read(&sbi->quota_sem);
af033b2a
CY		 2214 return ret;
2215}
26b5a079 2216
94b1e10e 2217static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2218{
2219 *projid = F2FS_I(inode)->i_projid;
2220 return 0;
2221}
2222
0abd675e
CY		 2223static const struct dquot_operations f2fs_quota_operations = {
2224 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2225 .write_dquot = f2fs_dquot_commit,
2226 .acquire_dquot = f2fs_dquot_acquire,
2227 .release_dquot = f2fs_dquot_release,
2228 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2229 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2230 .alloc_dquot = dquot_alloc,
2231 .destroy_dquot = dquot_destroy,
5c57132e 2232 .get_projid = f2fs_get_projid,
0abd675e
CY		 2233 .get_next_id = dquot_get_next_id,
2234};
2235
2236static const struct quotactl_ops f2fs_quotactl_ops = {
2237 .quota_on = f2fs_quota_on,
2238 .quota_off = f2fs_quota_off,
2239 .quota_sync = f2fs_quota_sync,
2240 .get_state = dquot_get_state,
2241 .set_info = dquot_set_dqinfo,
2242 .get_dqblk = dquot_get_dqblk,
2243 .set_dqblk = dquot_set_dqblk,
2244 .get_nextdqblk = dquot_get_next_dqblk,
2245};
2246#else
af033b2a
CY		 2247int f2fs_quota_sync(struct super_block *sb, int type)
2248{
2249 return 0;
2250}
2251
4b2414d0 2252void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2253{
2254}
2255#endif
2256
f62fc9f9 2257static const struct super_operations f2fs_sops = {
aff063e2 2258 .alloc_inode = f2fs_alloc_inode,
d01718a0 2259 .free_inode = f2fs_free_inode,
531ad7d5 2260 .drop_inode = f2fs_drop_inode,
aff063e2 2261 .write_inode = f2fs_write_inode,
b3783873 2262 .dirty_inode = f2fs_dirty_inode,
aff063e2 2263 .show_options = f2fs_show_options,
0abd675e
CY		 2264#ifdef CONFIG_QUOTA
2265 .quota_read = f2fs_quota_read,
2266 .quota_write = f2fs_quota_write,
2267 .get_dquots = f2fs_get_dquots,
2268#endif
aff063e2
JK		 2269 .evict_inode = f2fs_evict_inode,
2270 .put_super = f2fs_put_super,
2271 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2272 .freeze_fs = f2fs_freeze,
2273 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2274 .statfs = f2fs_statfs,
696c018c 2275 .remount_fs = f2fs_remount,
aff063e2
JK		 2276};
2277
643fa961 2278#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 2279static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2280{
2281 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2282 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2283 ctx, len, NULL);
2284}
2285
2286static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2287 void *fs_data)
2288{
b7c409de
SY		 2289 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2290
2291 /*
2292 * Encrypting the root directory is not allowed because fsck
2293 * expects lost+found directory to exist and remain unencrypted
2294 * if LOST_FOUND feature is enabled.
2295 *
2296 */
7beb01f7 2297 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2298 inode->i_ino == F2FS_ROOT_INO(sbi))
2299 return -EPERM;
2300
0b81d077
JK		 2301 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2302 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2303 ctx, len, fs_data, XATTR_CREATE);
2304}
2305
ff62af20
SY		 2306static bool f2fs_dummy_context(struct inode *inode)
2307{
2308 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2309}
2310
6f69f0ed 2311static const struct fscrypt_operations f2fs_cryptops = {
a5d431ef 2312 .key_prefix = "f2fs:",
0b81d077
JK		 2313 .get_context = f2fs_get_context,
2314 .set_context = f2fs_set_context,
ff62af20 2315 .dummy_context = f2fs_dummy_context,
0b81d077 2316 .empty_dir = f2fs_empty_dir,
e12ee683 2317 .max_namelen = F2FS_NAME_LEN,
0b81d077 2318};
0b81d077
JK		 2319#endif
2320
aff063e2
JK		 2321static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2322 u64 ino, u32 generation)
2323{
2324 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2325 struct inode *inode;
2326
4d57b86d 2327 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2328 return ERR_PTR(-ESTALE);
aff063e2
JK		 2329
2330 /*
2331 * f2fs_iget isn't quite right if the inode is currently unallocated!
2332 * However f2fs_iget currently does appropriate checks to handle stale
2333 * inodes so everything is OK.
2334 */
2335 inode = f2fs_iget(sb, ino);
2336 if (IS_ERR(inode))
2337 return ERR_CAST(inode);
6bacf52f 2338 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2339 /* we didn't find the right inode.. */
2340 iput(inode);
2341 return ERR_PTR(-ESTALE);
2342 }
2343 return inode;
2344}
2345
2346static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2347 int fh_len, int fh_type)
2348{
2349 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2350 f2fs_nfs_get_inode);
2351}
2352
2353static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2354 int fh_len, int fh_type)
2355{
2356 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2357 f2fs_nfs_get_inode);
2358}
2359
2360static const struct export_operations f2fs_export_ops = {
2361 .fh_to_dentry = f2fs_fh_to_dentry,
2362 .fh_to_parent = f2fs_fh_to_parent,
2363 .get_parent = f2fs_get_parent,
2364};
2365
e0afc4d6 2366static loff_t max_file_blocks(void)
aff063e2 2367{
7a2af766 2368 loff_t result = 0;
d02a6e61 2369 loff_t leaf_count = DEF_ADDRS_PER_BLOCK;
aff063e2 2370
7a2af766
CY		 2371 /*
2372 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2373 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2374 * space in inode.i_addr, it will be more safe to reassign
2375 * result as zero.
2376 */
2377
aff063e2
JK		 2378 /* two direct node blocks */
2379 result += (leaf_count * 2);
2380
2381 /* two indirect node blocks */
2382 leaf_count *= NIDS_PER_BLOCK;
2383 result += (leaf_count * 2);
2384
2385 /* one double indirect node block */
2386 leaf_count *= NIDS_PER_BLOCK;
2387 result += leaf_count;
2388
aff063e2
JK		 2389 return result;
2390}
2391
fd694733
JK		 2392static int __f2fs_commit_super(struct buffer_head *bh,
2393 struct f2fs_super_block *super)
2394{
2395 lock_buffer(bh);
2396 if (super)
2397 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2398 set_buffer_dirty(bh);
2399 unlock_buffer(bh);
2400
2401 /* it's rare case, we can do fua all the time */
3adc5fcb 2402 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2403}
2404
df728b0f 2405static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2406 struct buffer_head *bh)
9a59b62f 2407{
fd694733
JK		 2408 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2409 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2410 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2411 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2412 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2413 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2414 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2415 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2416 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2417 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2418 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2419 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2420 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2421 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2422 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2423 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2424 u64 main_end_blkaddr = main_blkaddr +
2425 (segment_count_main << log_blocks_per_seg);
2426 u64 seg_end_blkaddr = segment0_blkaddr +
2427 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2428
2429 if (segment0_blkaddr != cp_blkaddr) {
dcbb4c10
JP		 2430 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2431 segment0_blkaddr, cp_blkaddr);
9a59b62f
CY		 2432 return true;
2433 }
2434
2435 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2436 sit_blkaddr) {
dcbb4c10
JP		 2437 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2438 cp_blkaddr, sit_blkaddr,
2439 segment_count_ckpt << log_blocks_per_seg);
9a59b62f
CY		 2440 return true;
2441 }
2442
2443 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2444 nat_blkaddr) {
dcbb4c10
JP		 2445 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2446 sit_blkaddr, nat_blkaddr,
2447 segment_count_sit << log_blocks_per_seg);
9a59b62f
CY		 2448 return true;
2449 }
2450
2451 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2452 ssa_blkaddr) {
dcbb4c10
JP		 2453 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2454 nat_blkaddr, ssa_blkaddr,
2455 segment_count_nat << log_blocks_per_seg);
9a59b62f
CY		 2456 return true;
2457 }
2458
2459 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2460 main_blkaddr) {
dcbb4c10
JP		 2461 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2462 ssa_blkaddr, main_blkaddr,
2463 segment_count_ssa << log_blocks_per_seg);
9a59b62f
CY		 2464 return true;
2465 }
2466
fd694733 2467 if (main_end_blkaddr > seg_end_blkaddr) {
dcbb4c10
JP		 2468 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2469 main_blkaddr,
2470 segment0_blkaddr +
2471 (segment_count << log_blocks_per_seg),
2472 segment_count_main << log_blocks_per_seg);
9a59b62f 2473 return true;
fd694733
JK		 2474 } else if (main_end_blkaddr < seg_end_blkaddr) {
2475 int err = 0;
2476 char *res;
2477
2478 /* fix in-memory information all the time */
2479 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2480 segment0_blkaddr) >> log_blocks_per_seg);
2481
2482 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2483 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2484 res = "internally";
2485 } else {
2486 err = __f2fs_commit_super(bh, NULL);
2487 res = err ? "failed" : "done";
2488 }
dcbb4c10
JP		 2489 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2490 res, main_blkaddr,
2491 segment0_blkaddr +
2492 (segment_count << log_blocks_per_seg),
2493 segment_count_main << log_blocks_per_seg);
fd694733
JK		 2494 if (err)
2495 return true;
9a59b62f 2496 }
9a59b62f
CY		 2497 return false;
2498}
2499
df728b0f 2500static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2501 struct buffer_head *bh)
aff063e2 2502{
0cfe75c5
JK		 2503 block_t segment_count, segs_per_sec, secs_per_zone;
2504 block_t total_sections, blocks_per_seg;
fd694733
JK		 2505 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2506 (bh->b_data + F2FS_SUPER_OFFSET);
aff063e2 2507 unsigned int blocksize;
d440c52d
JZ		 2508 size_t crc_offset = 0;
2509 __u32 crc = 0;
2510
38fb6d0e
IZ		 2511 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2512 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2513 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2514 return -EINVAL;
2515 }
2516
d440c52d 2517 /* Check checksum_offset and crc in superblock */
7beb01f7 2518 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2519 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2520 if (crc_offset !=
2521 offsetof(struct f2fs_super_block, crc)) {
dcbb4c10
JP		 2522 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2523 crc_offset);
38fb6d0e 2524 return -EFSCORRUPTED;
d440c52d
JZ		 2525 }
2526 crc = le32_to_cpu(raw_super->crc);
2527 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
dcbb4c10 2528 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
38fb6d0e 2529 return -EFSCORRUPTED;
d440c52d
JZ		 2530 }
2531 }
aff063e2 2532
5c9b4692 2533 /* Currently, support only 4KB page cache size */
09cbfeaf 2534 if (F2FS_BLKSIZE != PAGE_SIZE) {
dcbb4c10
JP		 2535 f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
2536 PAGE_SIZE);
38fb6d0e 2537 return -EFSCORRUPTED;
5c9b4692 2538 }
2539
aff063e2
JK		 2540 /* Currently, support only 4KB block size */
2541 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2542 if (blocksize != F2FS_BLKSIZE) {
dcbb4c10
JP		 2543 f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
2544 blocksize);
38fb6d0e 2545 return -EFSCORRUPTED;
a07ef784 2546 }
5c9b4692 2547
9a59b62f
CY		 2548 /* check log blocks per segment */
2549 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
dcbb4c10
JP		 2550 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2551 le32_to_cpu(raw_super->log_blocks_per_seg));
38fb6d0e 2552 return -EFSCORRUPTED;
9a59b62f
CY		 2553 }
2554
55cf9cb6
CY		 2555 /* Currently, support 512/1024/2048/4096 bytes sector size */
2556 if (le32_to_cpu(raw_super->log_sectorsize) >
2557 F2FS_MAX_LOG_SECTOR_SIZE ||
2558 le32_to_cpu(raw_super->log_sectorsize) <
2559 F2FS_MIN_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2560 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2561 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2562 return -EFSCORRUPTED;
a07ef784 2563 }
55cf9cb6
CY		 2564 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2565 le32_to_cpu(raw_super->log_sectorsize) !=
2566 F2FS_MAX_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2567 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
2568 le32_to_cpu(raw_super->log_sectors_per_block),
2569 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2570 return -EFSCORRUPTED;
a07ef784 2571 }
9a59b62f 2572
0cfe75c5
JK		 2573 segment_count = le32_to_cpu(raw_super->segment_count);
2574 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2575 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2576 total_sections = le32_to_cpu(raw_super->section_count);
2577
2578 /* blocks_per_seg should be 512, given the above check */
2579 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2580
2581 if (segment_count > F2FS_MAX_SEGMENT ||
2582 segment_count < F2FS_MIN_SEGMENTS) {
dcbb4c10 2583 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
38fb6d0e 2584 return -EFSCORRUPTED;
0cfe75c5
JK		 2585 }
2586
2587 if (total_sections > segment_count ||
2588 total_sections < F2FS_MIN_SEGMENTS ||
2589 segs_per_sec > segment_count || !segs_per_sec) {
dcbb4c10
JP		 2590 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
2591 segment_count, total_sections, segs_per_sec);
38fb6d0e 2592 return -EFSCORRUPTED;
0cfe75c5
JK		 2593 }
2594
2595 if ((segment_count / segs_per_sec) < total_sections) {
dcbb4c10
JP		 2596 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
2597 segment_count, segs_per_sec, total_sections);
38fb6d0e 2598 return -EFSCORRUPTED;
0cfe75c5
JK		 2599 }
2600
88960068 2601 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
dcbb4c10
JP		 2602 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
2603 segment_count, le64_to_cpu(raw_super->block_count));
38fb6d0e 2604 return -EFSCORRUPTED;
0cfe75c5
JK		 2605 }
2606
42bf546c 2607 if (secs_per_zone > total_sections || !secs_per_zone) {
dcbb4c10
JP		 2608 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
2609 secs_per_zone, total_sections);
38fb6d0e 2610 return -EFSCORRUPTED;
0cfe75c5
JK		 2611 }
2612 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2613 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2614 (le32_to_cpu(raw_super->extension_count) +
2615 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
dcbb4c10
JP		 2616 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
2617 le32_to_cpu(raw_super->extension_count),
2618 raw_super->hot_ext_count,
2619 F2FS_MAX_EXTENSION);
38fb6d0e 2620 return -EFSCORRUPTED;
0cfe75c5
JK		 2621 }
2622
2623 if (le32_to_cpu(raw_super->cp_payload) >
2624 (blocks_per_seg - F2FS_CP_PACKS)) {
dcbb4c10
JP		 2625 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
2626 le32_to_cpu(raw_super->cp_payload),
2627 blocks_per_seg - F2FS_CP_PACKS);
38fb6d0e 2628 return -EFSCORRUPTED;
0cfe75c5
JK		 2629 }
2630
9a59b62f
CY		 2631 /* check reserved ino info */
2632 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2633 le32_to_cpu(raw_super->meta_ino) != 2 ||
2634 le32_to_cpu(raw_super->root_ino) != 3) {
dcbb4c10
JP		 2635 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2636 le32_to_cpu(raw_super->node_ino),
2637 le32_to_cpu(raw_super->meta_ino),
2638 le32_to_cpu(raw_super->root_ino));
38fb6d0e 2639 return -EFSCORRUPTED;
9a59b62f
CY		 2640 }
2641
2642 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2643 if (sanity_check_area_boundary(sbi, bh))
38fb6d0e 2644 return -EFSCORRUPTED;
9a59b62f 2645
aff063e2
JK		 2646 return 0;
2647}
2648
4d57b86d 2649int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2650{
2651 unsigned int total, fsmeta;
577e3495
JK		 2652 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2653 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2654 unsigned int ovp_segments, reserved_segments;
15d3042a 2655 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2656 unsigned int sit_segs, nat_segs;
2657 unsigned int sit_bitmap_size, nat_bitmap_size;
2658 unsigned int log_blocks_per_seg;
9dc956b2 2659 unsigned int segment_count_main;
e494c2f9 2660 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 2661 block_t user_block_count, valid_user_blocks;
2662 block_t avail_node_count, valid_node_count;
042be0f8 2663 int i, j;
aff063e2
JK		 2664
2665 total = le32_to_cpu(raw_super->segment_count);
2666 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2667 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2668 fsmeta += sit_segs;
2669 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2670 fsmeta += nat_segs;
aff063e2
JK		 2671 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2672 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2673
6bacf52f 2674 if (unlikely(fsmeta >= total))
aff063e2 2675 return 1;
577e3495 2676
2040fce8
JK		 2677 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2678 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2679
2680 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2681 ovp_segments == 0 || reserved_segments == 0)) {
dcbb4c10 2682 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2040fce8
JK		 2683 return 1;
2684 }
2685
9dc956b2
CY		 2686 user_block_count = le64_to_cpu(ckpt->user_block_count);
2687 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2688 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2689 if (!user_block_count || user_block_count >=
2690 segment_count_main << log_blocks_per_seg) {
dcbb4c10
JP		 2691 f2fs_err(sbi, "Wrong user_block_count: %u",
2692 user_block_count);
9dc956b2
CY		 2693 return 1;
2694 }
2695
7b63f72f
CY		 2696 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2697 if (valid_user_blocks > user_block_count) {
dcbb4c10
JP		 2698 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
2699 valid_user_blocks, user_block_count);
7b63f72f
CY		 2700 return 1;
2701 }
2702
2703 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
27cae0bc 2704 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
7b63f72f 2705 if (valid_node_count > avail_node_count) {
dcbb4c10
JP		 2706 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
2707 valid_node_count, avail_node_count);
7b63f72f
CY		 2708 return 1;
2709 }
2710
15d3042a
JQ		 2711 main_segs = le32_to_cpu(raw_super->segment_count_main);
2712 blocks_per_seg = sbi->blocks_per_seg;
2713
2714 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2715 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2716 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2717 return 1;
042be0f8
CY		 2718 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2719 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2720 le32_to_cpu(ckpt->cur_node_segno[j])) {
dcbb4c10
JP		 2721 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
2722 i, j,
2723 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2724 return 1;
2725 }
2726 }
15d3042a
JQ		 2727 }
2728 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2729 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2730 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2731 return 1;
042be0f8
CY		 2732 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2733 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2734 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2735 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
2736 i, j,
2737 le32_to_cpu(ckpt->cur_data_segno[i]));
042be0f8
CY		 2738 return 1;
2739 }
2740 }
2741 }
2742 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1166c1f2 2743 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
042be0f8
CY		 2744 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2745 le32_to_cpu(ckpt->cur_data_segno[j])) {
1166c1f2 2746 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
dcbb4c10
JP		 2747 i, j,
2748 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2749 return 1;
2750 }
2751 }
15d3042a
JQ		 2752 }
2753
c77ec61c
CY		 2754 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2755 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2756
2757 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2758 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
dcbb4c10
JP		 2759 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
2760 sit_bitmap_size, nat_bitmap_size);
c77ec61c
CY		 2761 return 1;
2762 }
e494c2f9
CY		 2763
2764 cp_pack_start_sum = __start_sum_addr(sbi);
2765 cp_payload = __cp_payload(sbi);
2766 if (cp_pack_start_sum < cp_payload + 1 ||
2767 cp_pack_start_sum > blocks_per_seg - 1 -
2768 NR_CURSEG_TYPE) {
dcbb4c10
JP		 2769 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
2770 cp_pack_start_sum);
e494c2f9
CY		 2771 return 1;
2772 }
c77ec61c 2773
5dae2d39
CY		 2774 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
2775 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2d008835
CY		 2776 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
2777 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
2778 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
dcbb4c10 2779 le32_to_cpu(ckpt->checksum_offset));
5dae2d39
CY		 2780 return 1;
2781 }
2782
1e968fdf 2783 if (unlikely(f2fs_cp_error(sbi))) {
dcbb4c10 2784 f2fs_err(sbi, "A bug case: need to run fsck");
577e3495
JK		 2785 return 1;
2786 }
aff063e2
JK		 2787 return 0;
2788}
2789
2790static void init_sb_info(struct f2fs_sb_info *sbi)
2791{
2792 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 2793 int i;
aff063e2
JK		 2794
2795 sbi->log_sectors_per_block =
2796 le32_to_cpu(raw_super->log_sectors_per_block);
2797 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2798 sbi->blocksize = 1 << sbi->log_blocksize;
2799 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2800 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2801 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2802 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2803 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2804 sbi->total_node_count =
2805 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2806 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2807 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2808 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2809 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2810 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 2811 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2812 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 2813 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 2814 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 2815
ab9fa662 2816 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2817 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2818 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2819 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2820 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2821 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 2822 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2823 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 2824 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2825
35782b23
JK		 2826 for (i = 0; i < NR_COUNT_TYPE; i++)
2827 atomic_set(&sbi->nr_pages[i], 0);
2828
c29fd0c0
CY		 2829 for (i = 0; i < META; i++)
2830 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2831
2658e50d
JK		 2832 INIT_LIST_HEAD(&sbi->s_list);
2833 mutex_init(&sbi->umount_mutex);
107a805d 2834 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2835 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2836
2837 sbi->dirty_device = 0;
2838 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2839
846ae671 2840 init_rwsem(&sbi->sb_lock);
aff063e2
JK		 2841}
2842
523be8a6
JK		 2843static int init_percpu_info(struct f2fs_sb_info *sbi)
2844{
35782b23 2845 int err;
41382ec4 2846
513c5f37
JK		 2847 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2848 if (err)
2849 return err;
2850
4a70e255 2851 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2852 GFP_KERNEL);
4a70e255
CY		 2853 if (err)
2854 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2855
2856 return err;
523be8a6
JK		 2857}
2858
178053e2 2859#ifdef CONFIG_BLK_DEV_ZONED
3c62be17 2860static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2861{
3c62be17 2862 struct block_device *bdev = FDEV(devi).bdev;
178053e2
DLM		 2863 sector_t nr_sectors = bdev->bd_part->nr_sects;
2864 sector_t sector = 0;
2865 struct blk_zone *zones;
2866 unsigned int i, nr_zones;
2867 unsigned int n = 0;
2868 int err = -EIO;
2869
7beb01f7 2870 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 2871 return 0;
2872
3c62be17 2873 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 2874 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 2875 return -EINVAL;
f99e8648 2876 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 2877 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2878 __ilog2_u32(sbi->blocks_per_blkz))
2879 return -EINVAL;
178053e2 2880 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 2881 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2882 sbi->log_blocks_per_blkz;
f99e8648 2883 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 2884 FDEV(devi).nr_blkz++;
178053e2 2885
95175daf
DLM		 2886 FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
2887 BITS_TO_LONGS(FDEV(devi).nr_blkz)
2888 * sizeof(unsigned long),
2889 GFP_KERNEL);
2890 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 2891 return -ENOMEM;
2892
2893#define F2FS_REPORT_NR_ZONES 4096
2894
026f0507
KC		 2895 zones = f2fs_kzalloc(sbi,
2896 array_size(F2FS_REPORT_NR_ZONES,
2897 sizeof(struct blk_zone)),
2898 GFP_KERNEL);
178053e2
DLM		 2899 if (!zones)
2900 return -ENOMEM;
2901
2902 /* Get block zones type */
2903 while (zones && sector < nr_sectors) {
2904
2905 nr_zones = F2FS_REPORT_NR_ZONES;
bd976e52 2906 err = blkdev_report_zones(bdev, sector, zones, &nr_zones);
178053e2
DLM		 2907 if (err)
2908 break;
2909 if (!nr_zones) {
2910 err = -EIO;
2911 break;
2912 }
2913
2914 for (i = 0; i < nr_zones; i++) {
95175daf
DLM		 2915 if (zones[i].type != BLK_ZONE_TYPE_CONVENTIONAL)
2916 set_bit(n, FDEV(devi).blkz_seq);
178053e2
DLM		 2917 sector += zones[i].len;
2918 n++;
2919 }
2920 }
2921
5222595d 2922 kvfree(zones);
178053e2
DLM		 2923
2924 return err;
2925}
2926#endif
2927
9076a75f
GZ		 2928/*
2929 * Read f2fs raw super block.
2b39e907
SL		 2930 * Because we have two copies of super block, so read both of them
2931 * to get the first valid one. If any one of them is broken, we pass
2932 * them recovery flag back to the caller.
9076a75f 2933 */
df728b0f 2934static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 2935 struct f2fs_super_block **raw_super,
e8240f65 2936 int *valid_super_block, int *recovery)
14d7e9de 2937{
df728b0f 2938 struct super_block *sb = sbi->sb;
2b39e907 2939 int block;
e8240f65 2940 struct buffer_head *bh;
fd694733 2941 struct f2fs_super_block *super;
da554e48 2942 int err = 0;
14d7e9de 2943
b39f0de2
YH		 2944 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2945 if (!super)
2946 return -ENOMEM;
2b39e907
SL		 2947
2948 for (block = 0; block < 2; block++) {
2949 bh = sb_bread(sb, block);
2950 if (!bh) {
dcbb4c10
JP		 2951 f2fs_err(sbi, "Unable to read %dth superblock",
2952 block + 1);
2b39e907
SL		 2953 err = -EIO;
2954 continue;
2955 }
14d7e9de 2956
2b39e907 2957 /* sanity checking of raw super */
38fb6d0e
IZ		 2958 err = sanity_check_raw_super(sbi, bh);
2959 if (err) {
dcbb4c10
JP		 2960 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
2961 block + 1);
2b39e907
SL		 2962 brelse(bh);
2963 continue;
2964 }
14d7e9de 2965
2b39e907 2966 if (!*raw_super) {
fd694733
JK		 2967 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2968 sizeof(*super));
2b39e907
SL		 2969 *valid_super_block = block;
2970 *raw_super = super;
2971 }
2972 brelse(bh);
da554e48 2973 }
2974
2b39e907
SL		 2975 /* Fail to read any one of the superblocks*/
2976 if (err < 0)
2977 *recovery = 1;
da554e48 2978
da554e48 2979 /* No valid superblock */
2b39e907 2980 if (!*raw_super)
5222595d 2981 kvfree(super);
2b39e907
SL		 2982 else
2983 err = 0;
da554e48 2984
2b39e907 2985 return err;
14d7e9de 2986}
2987
fd694733 2988int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 2989{
5d909cdb 2990 struct buffer_head *bh;
d440c52d 2991 __u32 crc = 0;
26d815ad
JK		 2992 int err;
2993
df728b0f
JK		 2994 if ((recover && f2fs_readonly(sbi->sb)) ||
2995 bdev_read_only(sbi->sb->s_bdev)) {
2996 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 2997 return -EROFS;
df728b0f 2998 }
f2353d7b 2999
d440c52d 3000 /* we should update superblock crc here */
7beb01f7 3001 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 3002 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3003 offsetof(struct f2fs_super_block, crc));
3004 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3005 }
3006
fd694733 3007 /* write back-up superblock first */
0964fc1a 3008 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 3009 if (!bh)
3010 return -EIO;
fd694733 3011 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 3012 brelse(bh);
c5bda1c8
CY		 3013
3014 /* if we are in recovery path, skip writing valid superblock */
3015 if (recover || err)
5d909cdb 3016 return err;
26d815ad
JK		 3017
3018 /* write current valid superblock */
0964fc1a 3019 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 3020 if (!bh)
3021 return -EIO;
3022 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3023 brelse(bh);
3024 return err;
26d815ad
JK		 3025}
3026
3c62be17
JK		 3027static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3028{
3029 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 3030 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 3031 int i;
3032
7bb3a371
MS		 3033 /* Initialize single device information */
3034 if (!RDEV(0).path[0]) {
3035 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 3036 return 0;
7bb3a371
MS		 3037 max_devices = 1;
3038 }
3c62be17 3039
7bb3a371
MS		 3040 /*
3041 * Initialize multiple devices information, or single
3042 * zoned block device information.
3043 */
026f0507
KC		 3044 sbi->devs = f2fs_kzalloc(sbi,
3045 array_size(max_devices,
3046 sizeof(struct f2fs_dev_info)),
3047 GFP_KERNEL);
7bb3a371
MS		 3048 if (!sbi->devs)
3049 return -ENOMEM;
3c62be17 3050
7bb3a371 3051 for (i = 0; i < max_devices; i++) {
3c62be17 3052
7bb3a371
MS		 3053 if (i > 0 && !RDEV(i).path[0])
3054 break;
3055
3056 if (max_devices == 1) {
3057 /* Single zoned block device mount */
3058 FDEV(0).bdev =
3059 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 3060 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 3061 } else {
3062 /* Multi-device mount */
3063 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3064 FDEV(i).total_segments =
3065 le32_to_cpu(RDEV(i).total_segments);
3066 if (i == 0) {
3067 FDEV(i).start_blk = 0;
3068 FDEV(i).end_blk = FDEV(i).start_blk +
3069 (FDEV(i).total_segments <<
3070 sbi->log_blocks_per_seg) - 1 +
3071 le32_to_cpu(raw_super->segment0_blkaddr);
3072 } else {
3073 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3074 FDEV(i).end_blk = FDEV(i).start_blk +
3075 (FDEV(i).total_segments <<
3076 sbi->log_blocks_per_seg) - 1;
3077 }
3078 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 3079 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 3080 }
3c62be17
JK		 3081 if (IS_ERR(FDEV(i).bdev))
3082 return PTR_ERR(FDEV(i).bdev);
3083
3084 /* to release errored devices */
3085 sbi->s_ndevs = i + 1;
3086
3087#ifdef CONFIG_BLK_DEV_ZONED
3088 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3089 !f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3090 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3c62be17
JK		 3091 return -EINVAL;
3092 }
3093 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3094 if (init_blkz_info(sbi, i)) {
dcbb4c10 3095 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3c62be17
JK		 3096 return -EINVAL;
3097 }
7bb3a371
MS		 3098 if (max_devices == 1)
3099 break;
dcbb4c10
JP		 3100 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3101 i, FDEV(i).path,
3102 FDEV(i).total_segments,
3103 FDEV(i).start_blk, FDEV(i).end_blk,
3104 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3105 "Host-aware" : "Host-managed");
3c62be17
JK		 3106 continue;
3107 }
3108#endif
dcbb4c10
JP		 3109 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3110 i, FDEV(i).path,
3111 FDEV(i).total_segments,
3112 FDEV(i).start_blk, FDEV(i).end_blk);
3113 }
3114 f2fs_info(sbi,
3115 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3116 return 0;
3117}
3118
5aba5430
DR		 3119static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3120{
3121#ifdef CONFIG_UNICODE
3122 if (f2fs_sb_has_casefold(sbi) && !sbi->s_encoding) {
3123 const struct f2fs_sb_encodings *encoding_info;
3124 struct unicode_map *encoding;
3125 __u16 encoding_flags;
3126
3127 if (f2fs_sb_has_encrypt(sbi)) {
3128 f2fs_err(sbi,
3129 "Can't mount with encoding and encryption");
3130 return -EINVAL;
3131 }
3132
3133 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3134 &encoding_flags)) {
3135 f2fs_err(sbi,
3136 "Encoding requested by superblock is unknown");
3137 return -EINVAL;
3138 }
3139
3140 encoding = utf8_load(encoding_info->version);
3141 if (IS_ERR(encoding)) {
3142 f2fs_err(sbi,
3143 "can't mount with superblock charset: %s-%s "
3144 "not supported by the kernel. flags: 0x%x.",
3145 encoding_info->name, encoding_info->version,
3146 encoding_flags);
3147 return PTR_ERR(encoding);
3148 }
3149 f2fs_info(sbi, "Using encoding defined by superblock: "
3150 "%s-%s with flags 0x%hx", encoding_info->name,
3151 encoding_info->version?:"\b", encoding_flags);
3152
3153 sbi->s_encoding = encoding;
3154 sbi->s_encoding_flags = encoding_flags;
2c2eb7a3 3155 sbi->sb->s_d_op = &f2fs_dentry_ops;
5aba5430
DR		 3156 }
3157#else
3158 if (f2fs_sb_has_casefold(sbi)) {
3159 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3160 return -EINVAL;
3161 }
3162#endif
3163 return 0;
3164}
3165
84b89e5d
JK		 3166static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3167{
3168 struct f2fs_sm_info *sm_i = SM_I(sbi);
3169
3170 /* adjust parameters according to the volume size */
3171 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3172 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3173 sm_i->dcc_info->discard_granularity = 1;
3174 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3175 }
4cac90d5
CY		 3176
3177 sbi->readdir_ra = 1;
84b89e5d
JK		 3178}
3179
aff063e2
JK		 3180static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3181{
3182 struct f2fs_sb_info *sbi;
da554e48 3183 struct f2fs_super_block *raw_super;
aff063e2 3184 struct inode *root;
99e3e858 3185 int err;
aa2c8c43 3186 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3187 char *options = NULL;
e8240f65 3188 int recovery, i, valid_super_block;
8f1dbbbb 3189 struct curseg_info *seg_i;
aa2c8c43 3190 int retry_cnt = 1;
aff063e2 3191
ed2e621a 3192try_onemore:
da554e48 3193 err = -EINVAL;
3194 raw_super = NULL;
e8240f65 3195 valid_super_block = -1;
da554e48 3196 recovery = 0;
3197
aff063e2
JK		 3198 /* allocate memory for f2fs-specific super block info */
3199 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3200 if (!sbi)
3201 return -ENOMEM;
3202
df728b0f
JK		 3203 sbi->sb = sb;
3204
43b6573b
KM		 3205 /* Load the checksum driver */
3206 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3207 if (IS_ERR(sbi->s_chksum_driver)) {
dcbb4c10 3208 f2fs_err(sbi, "Cannot load crc32 driver.");
43b6573b
KM		 3209 err = PTR_ERR(sbi->s_chksum_driver);
3210 sbi->s_chksum_driver = NULL;
3211 goto free_sbi;
3212 }
3213
ff9234ad 3214 /* set a block size */
6bacf52f 3215 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
dcbb4c10 3216 f2fs_err(sbi, "unable to set blocksize");
aff063e2 3217 goto free_sbi;
a07ef784 3218 }
aff063e2 3219
df728b0f 3220 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3221 &recovery);
9076a75f
GZ		 3222 if (err)
3223 goto free_sbi;
3224
5fb08372 3225 sb->s_fs_info = sbi;
52763a4b
JK		 3226 sbi->raw_super = raw_super;
3227
704956ec 3228 /* precompute checksum seed for metadata */
7beb01f7 3229 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3230 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3231 sizeof(raw_super->uuid));
3232
d1b959c8
DLM		 3233 /*
3234 * The BLKZONED feature indicates that the drive was formatted with
3235 * zone alignment optimization. This is optional for host-aware
3236 * devices, but mandatory for host-managed zoned block devices.
3237 */
3238#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3239 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3240 f2fs_err(sbi, "Zoned block device support is not enabled");
1727f317 3241 err = -EOPNOTSUPP;
d1b959c8
DLM		 3242 goto free_sb_buf;
3243 }
d1b959c8 3244#endif
498c5e9f 3245 default_options(sbi);
aff063e2 3246 /* parse mount options */
dabc4a5c
JK		 3247 options = kstrdup((const char *)data, GFP_KERNEL);
3248 if (data && !options) {
3249 err = -ENOMEM;
aff063e2 3250 goto free_sb_buf;
dabc4a5c
JK		 3251 }
3252
3253 err = parse_options(sb, options);
3254 if (err)
3255 goto free_options;
aff063e2 3256
e0afc4d6
CY		 3257 sbi->max_file_blocks = max_file_blocks();
3258 sb->s_maxbytes = sbi->max_file_blocks <<
3259 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3260 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3261
5aba5430
DR		 3262 err = f2fs_setup_casefold(sbi);
3263 if (err)
3264 goto free_options;
3265
0abd675e
CY		 3266#ifdef CONFIG_QUOTA
3267 sb->dq_op = &f2fs_quota_operations;
bc88ac96 3268 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3269 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3270
7beb01f7 3271 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3272 for (i = 0; i < MAXQUOTAS; i++) {
3273 if (f2fs_qf_ino(sbi->sb, i))
3274 sbi->nquota_files++;
3275 }
3276 }
0abd675e
CY		 3277#endif
3278
aff063e2 3279 sb->s_op = &f2fs_sops;
643fa961 3280#ifdef CONFIG_FS_ENCRYPTION
0b81d077 3281 sb->s_cop = &f2fs_cryptops;
95ae251f
EB		 3282#endif
3283#ifdef CONFIG_FS_VERITY
3284 sb->s_vop = &f2fs_verityops;
ffcc4182 3285#endif
aff063e2
JK		 3286 sb->s_xattr = f2fs_xattr_handlers;
3287 sb->s_export_op = &f2fs_export_ops;
3288 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3289 sb->s_time_gran = 1;
1751e8a6
LT		 3290 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3291 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3292 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3293 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3294
3295 /* init f2fs-specific super block info */
e8240f65 3296 sbi->valid_super_block = valid_super_block;
aff063e2 3297 mutex_init(&sbi->gc_mutex);
853137ce 3298 mutex_init(&sbi->writepages);
aff063e2 3299 mutex_init(&sbi->cp_mutex);
04f0b2ea 3300 mutex_init(&sbi->resize_mutex);
b3582c68 3301 init_rwsem(&sbi->node_write);
59c9081b 3302 init_rwsem(&sbi->node_change);
315df839
JK		 3303
3304 /* disallow all the data/node/meta page writes */
3305 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3306 spin_lock_init(&sbi->stat_lock);
971767ca 3307
b0af6d49
CY		 3308 /* init iostat info */
3309 spin_lock_init(&sbi->iostat_lock);
3310 sbi->iostat_enable = false;
3311
458e6197 3312 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3313 int n = (i == META) ? 1: NR_TEMP_TYPE;
3314 int j;
3315
c8606593
KC		 3316 sbi->write_io[i] =
3317 f2fs_kmalloc(sbi,
3318 array_size(n,
3319 sizeof(struct f2fs_bio_info)),
3320 GFP_KERNEL);
b63def91
CJ		 3321 if (!sbi->write_io[i]) {
3322 err = -ENOMEM;
0b2103e8 3323 goto free_bio_info;
b63def91 3324 }
a912b54d
JK		 3325
3326 for (j = HOT; j < n; j++) {
3327 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3328 sbi->write_io[i][j].sbi = sbi;
3329 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3330 spin_lock_init(&sbi->write_io[i][j].io_lock);
3331 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
a912b54d 3332 }
458e6197 3333 }
971767ca 3334
b873b798 3335 init_rwsem(&sbi->cp_rwsem);
db6ec53b 3336 init_rwsem(&sbi->quota_sem);
fb51b5ef 3337 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3338 init_sb_info(sbi);
3339
523be8a6
JK		 3340 err = init_percpu_info(sbi);
3341 if (err)
d7997e63 3342 goto free_bio_info;
523be8a6 3343
c72db71e 3344 if (F2FS_IO_ALIGNED(sbi)) {
0a595eba 3345 sbi->write_io_dummy =
a3ebfe4f 3346 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3347 if (!sbi->write_io_dummy) {
3348 err = -ENOMEM;
d7997e63 3349 goto free_percpu;
1727f317 3350 }
0a595eba
JK		 3351 }
3352
aff063e2
JK		 3353 /* get an inode for meta space */
3354 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3355 if (IS_ERR(sbi->meta_inode)) {
dcbb4c10 3356 f2fs_err(sbi, "Failed to read F2FS meta data inode");
aff063e2 3357 err = PTR_ERR(sbi->meta_inode);
0a595eba 3358 goto free_io_dummy;
aff063e2
JK		 3359 }
3360
4d57b86d 3361 err = f2fs_get_valid_checkpoint(sbi);
a07ef784 3362 if (err) {
dcbb4c10 3363 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
aff063e2 3364 goto free_meta_inode;
a07ef784 3365 }
aff063e2 3366
af033b2a
CY		 3367 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3368 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3369 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3370 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3371 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3372 }
af033b2a 3373
04f0b2ea
QS		 3374 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3375 set_sbi_flag(sbi, SBI_NEED_FSCK);
3376
3c62be17
JK		 3377 /* Initialize device list */
3378 err = f2fs_scan_devices(sbi);
3379 if (err) {
dcbb4c10 3380 f2fs_err(sbi, "Failed to find devices");
3c62be17
JK		 3381 goto free_devices;
3382 }
3383
aff063e2
JK		 3384 sbi->total_valid_node_count =
3385 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3386 percpu_counter_set(&sbi->total_valid_inode_count,
3387 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3388 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3389 sbi->total_valid_block_count =
3390 le64_to_cpu(sbi->ckpt->valid_block_count);
3391 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3392 sbi->reserved_blocks = 0;
80d42145 3393 sbi->current_reserved_blocks = 0;
7e65be49 3394 limit_reserve_root(sbi);
41382ec4 3395
c227f912
CY		 3396 for (i = 0; i < NR_INODE_TYPE; i++) {
3397 INIT_LIST_HEAD(&sbi->inode_list[i]);
3398 spin_lock_init(&sbi->inode_lock[i]);
3399 }
040d2bb3 3400 mutex_init(&sbi->flush_lock);
aff063e2 3401
4d57b86d 3402 f2fs_init_extent_cache_info(sbi);
1dcc336b 3403
4d57b86d 3404 f2fs_init_ino_entry_info(sbi);
aff063e2 3405
50fa53ec
CY		 3406 f2fs_init_fsync_node_info(sbi);
3407
aff063e2 3408 /* setup f2fs internal modules */
4d57b86d 3409 err = f2fs_build_segment_manager(sbi);
a07ef784 3410 if (err) {
dcbb4c10
JP		 3411 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3412 err);
aff063e2 3413 goto free_sm;
a07ef784 3414 }
4d57b86d 3415 err = f2fs_build_node_manager(sbi);
a07ef784 3416 if (err) {
dcbb4c10
JP		 3417 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3418 err);
aff063e2 3419 goto free_nm;
a07ef784 3420 }
aff063e2 3421
8f1dbbbb
SL		 3422 /* For write statistics */
3423 if (sb->s_bdev->bd_part)
3424 sbi->sectors_written_start =
dbae2c55
MC		 3425 (u64)part_stat_read(sb->s_bdev->bd_part,
3426 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3427
3428 /* Read accumulated write IO statistics if exists */
3429 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3430 if (__exist_node_summaries(sbi))
3431 sbi->kbytes_written =
b2dde6fc 3432 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3433
4d57b86d 3434 f2fs_build_gc_manager(sbi);
aff063e2 3435
60aa4d55
ST		 3436 err = f2fs_build_stats(sbi);
3437 if (err)
3438 goto free_nm;
3439
aff063e2
JK		 3440 /* get an inode for node space */
3441 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3442 if (IS_ERR(sbi->node_inode)) {
dcbb4c10 3443 f2fs_err(sbi, "Failed to read node inode");
aff063e2 3444 err = PTR_ERR(sbi->node_inode);
60aa4d55 3445 goto free_stats;
aff063e2
JK		 3446 }
3447
aff063e2
JK		 3448 /* read root inode and dentry */
3449 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3450 if (IS_ERR(root)) {
dcbb4c10 3451 f2fs_err(sbi, "Failed to read root inode");
aff063e2 3452 err = PTR_ERR(root);
60aa4d55 3453 goto free_node_inode;
aff063e2 3454 }
bcbfbd60
CY		 3455 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3456 !root->i_size || !root->i_nlink) {
9d847950 3457 iput(root);
8f99a946 3458 err = -EINVAL;
60aa4d55 3459 goto free_node_inode;
8f99a946 3460 }
aff063e2
JK		 3461
3462 sb->s_root = d_make_root(root); /* allocate root dentry */
3463 if (!sb->s_root) {
3464 err = -ENOMEM;
025cdb16 3465 goto free_node_inode;
aff063e2
JK		 3466 }
3467
dc6b2055 3468 err = f2fs_register_sysfs(sbi);
b59d0bae 3469 if (err)
a398101a 3470 goto free_root_inode;
b59d0bae 3471
ea676733 3472#ifdef CONFIG_QUOTA
76cf05d7 3473 /* Enable quota usage during mount */
7beb01f7 3474 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3475 err = f2fs_enable_quotas(sb);
730746ce 3476 if (err)
dcbb4c10 3477 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
ea676733
JK		 3478 }
3479#endif
4b2414d0 3480 /* if there are nt orphan nodes free them */
4d57b86d 3481 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3482 if (err)
ea676733 3483 goto free_meta;
4b2414d0 3484
4354994f 3485 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3486 goto reset_checkpoint;
4354994f 3487
6437d1b0
JK		 3488 /* recover fsynced data */
3489 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
081d78c2
JK		 3490 /*
3491 * mount should be failed, when device has readonly mode, and
3492 * previous checkpoint was not done by clean system shutdown.
3493 */
b61af314
CY		 3494 if (f2fs_hw_is_readonly(sbi)) {
3495 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3496 err = -EROFS;
dcbb4c10 3497 f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
b61af314
CY		 3498 goto free_meta;
3499 }
dcbb4c10 3500 f2fs_info(sbi, "write access unavailable, skipping recovery");
b61af314 3501 goto reset_checkpoint;
081d78c2 3502 }
2adc3505
CY		 3503
3504 if (need_fsck)
3505 set_sbi_flag(sbi, SBI_NEED_FSCK);
3506
aa2c8c43
CY		 3507 if (skip_recovery)
3508 goto reset_checkpoint;
a468f0ef 3509
4d57b86d 3510 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3511 if (err < 0) {
aa2c8c43
CY		 3512 if (err != -ENOMEM)
3513 skip_recovery = true;
2adc3505 3514 need_fsck = true;
dcbb4c10
JP		 3515 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3516 err);
4b2414d0 3517 goto free_meta;
ed2e621a 3518 }
6781eabb 3519 } else {
4d57b86d 3520 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3521
3522 if (!f2fs_readonly(sb) && err > 0) {
3523 err = -EINVAL;
dcbb4c10 3524 f2fs_err(sbi, "Need to recover fsync data");
ea676733 3525 goto free_meta;
6781eabb 3526 }
6437d1b0 3527 }
aa2c8c43 3528reset_checkpoint:
4d57b86d 3529 /* f2fs_recover_fsync_data() cleared this already */
315df839 3530 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3531
4354994f
DR		 3532 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3533 err = f2fs_disable_checkpoint(sbi);
3534 if (err)
812a9597 3535 goto sync_free_meta;
4354994f
DR		 3536 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3537 f2fs_enable_checkpoint(sbi);
3538 }
3539
6437d1b0
JK		 3540 /*
3541 * If filesystem is not mounted as read-only then
3542 * do start the gc_thread.
3543 */
6c029932 3544 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
6437d1b0 3545 /* After POR, we can run background GC thread.*/
4d57b86d 3546 err = f2fs_start_gc_thread(sbi);
6437d1b0 3547 if (err)
812a9597 3548 goto sync_free_meta;
6437d1b0 3549 }
5222595d 3550 kvfree(options);
da554e48 3551
3552 /* recover broken superblock */
f2353d7b 3553 if (recovery) {
41214b3c 3554 err = f2fs_commit_super(sbi, true);
dcbb4c10
JP		 3555 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
3556 sbi->valid_super_block ? 1 : 2, err);
da554e48 3557 }
3558
bae01eda
CY		 3559 f2fs_join_shrinker(sbi);
3560
84b89e5d
JK		 3561 f2fs_tuning_parameters(sbi);
3562
dcbb4c10
JP		 3563 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
3564 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3565 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3566 f2fs_update_time(sbi, REQ_TIME);
db610a64 3567 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3568 return 0;
6437d1b0 3569
812a9597
JK		 3570sync_free_meta:
3571 /* safe to flush all the data */
3572 sync_filesystem(sbi->sb);
aa2c8c43 3573 retry_cnt = 0;
812a9597 3574
4b2414d0 3575free_meta:
ea676733 3576#ifdef CONFIG_QUOTA
26b5a079 3577 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3578 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3579 f2fs_quota_off_umount(sbi->sb);
3580#endif
4b2414d0 3581 /*
4d57b86d 3582 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3583 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3584 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3585 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3586 */
3587 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3588 /* evict some inodes being cached by GC */
3589 evict_inodes(sb);
dc6b2055 3590 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3591free_root_inode:
3592 dput(sb->s_root);
3593 sb->s_root = NULL;
3594free_node_inode:
4d57b86d 3595 f2fs_release_ino_entry(sbi, true);
bae01eda 3596 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3597 iput(sbi->node_inode);
7c77bf7d 3598 sbi->node_inode = NULL;
60aa4d55
ST		 3599free_stats:
3600 f2fs_destroy_stats(sbi);
aff063e2 3601free_nm:
4d57b86d 3602 f2fs_destroy_node_manager(sbi);
aff063e2 3603free_sm:
4d57b86d 3604 f2fs_destroy_segment_manager(sbi);
3c62be17
JK		 3605free_devices:
3606 destroy_device_list(sbi);
5222595d 3607 kvfree(sbi->ckpt);
aff063e2
JK		 3608free_meta_inode:
3609 make_bad_inode(sbi->meta_inode);
3610 iput(sbi->meta_inode);
7c77bf7d 3611 sbi->meta_inode = NULL;
0a595eba
JK		 3612free_io_dummy:
3613 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3614free_percpu:
3615 destroy_percpu_info(sbi);
3616free_bio_info:
a912b54d 3617 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3618 kvfree(sbi->write_io[i]);
5aba5430
DR		 3619
3620#ifdef CONFIG_UNICODE
3621 utf8_unload(sbi->s_encoding);
3622#endif
d7997e63 3623free_options:
4b2414d0
CY		 3624#ifdef CONFIG_QUOTA
3625 for (i = 0; i < MAXQUOTAS; i++)
5222595d 3626 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3627#endif
5222595d 3628 kvfree(options);
aff063e2 3629free_sb_buf:
5222595d 3630 kvfree(raw_super);
aff063e2 3631free_sbi:
43b6573b
KM		 3632 if (sbi->s_chksum_driver)
3633 crypto_free_shash(sbi->s_chksum_driver);
5222595d 3634 kvfree(sbi);
ed2e621a
JK		 3635
3636 /* give only one another chance */
aa2c8c43
CY		 3637 if (retry_cnt > 0 && skip_recovery) {
3638 retry_cnt--;
ed2e621a
JK		 3639 shrink_dcache_sb(sb);
3640 goto try_onemore;
3641 }
aff063e2
JK		 3642 return err;
3643}
3644
3645static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3646 const char *dev_name, void *data)
3647{
3648 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3649}
3650
30a5537f
JK		 3651static void kill_f2fs_super(struct super_block *sb)
3652{
cce13252 3653 if (sb->s_root) {
1cb50f87
JK		 3654 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3655
3656 set_sbi_flag(sbi, SBI_IS_CLOSE);
3657 f2fs_stop_gc_thread(sbi);
3658 f2fs_stop_discard_thread(sbi);
3659
3660 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3661 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3662 struct cp_control cpc = {
3663 .reason = CP_UMOUNT,
3664 };
3665 f2fs_write_checkpoint(sbi, &cpc);
3666 }
1378752b
CY		 3667
3668 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3669 sb->s_flags &= ~SB_RDONLY;
cce13252 3670 }
30a5537f
JK		 3671 kill_block_super(sb);
3672}
3673
aff063e2
JK		 3674static struct file_system_type f2fs_fs_type = {
3675 .owner = THIS_MODULE,
3676 .name = "f2fs",
3677 .mount = f2fs_mount,
30a5537f 3678 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3679 .fs_flags = FS_REQUIRES_DEV,
3680};
7f78e035 3681MODULE_ALIAS_FS("f2fs");
aff063e2 3682
6e6093a8 3683static int __init init_inodecache(void)
aff063e2 3684{
5d097056
VD		 3685 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3686 sizeof(struct f2fs_inode_info), 0,
3687 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3688 if (!f2fs_inode_cachep)
aff063e2
JK		 3689 return -ENOMEM;
3690 return 0;
3691}
3692
3693static void destroy_inodecache(void)
3694{
3695 /*
3696 * Make sure all delayed rcu free inodes are flushed before we
3697 * destroy cache.
3698 */
3699 rcu_barrier();
3700 kmem_cache_destroy(f2fs_inode_cachep);
3701}
3702
3703static int __init init_f2fs_fs(void)
3704{
3705 int err;
3706
4071e67c
AP		 3707 if (PAGE_SIZE != F2FS_BLKSIZE) {
3708 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3709 PAGE_SIZE, F2FS_BLKSIZE);
3710 return -EINVAL;
3711 }
3712
c0508650
JK		 3713 f2fs_build_trace_ios();
3714
aff063e2
JK		 3715 err = init_inodecache();
3716 if (err)
3717 goto fail;
4d57b86d 3718 err = f2fs_create_node_manager_caches();
aff063e2 3719 if (err)
9890ff3f 3720 goto free_inodecache;
4d57b86d 3721 err = f2fs_create_segment_manager_caches();
aff063e2 3722 if (err)
9890ff3f 3723 goto free_node_manager_caches;
4d57b86d 3724 err = f2fs_create_checkpoint_caches();
aff063e2 3725 if (err)
06292073 3726 goto free_segment_manager_caches;
4d57b86d 3727 err = f2fs_create_extent_cache();
1dcc336b
CY		 3728 if (err)
3729 goto free_checkpoint_caches;
dc6b2055 3730 err = f2fs_init_sysfs();
a398101a 3731 if (err)
1dcc336b 3732 goto free_extent_cache;
2658e50d 3733 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3734 if (err)
a398101a 3735 goto free_sysfs;
2658e50d
JK		 3736 err = register_filesystem(&f2fs_fs_type);
3737 if (err)
3738 goto free_shrinker;
21acc07d 3739 f2fs_create_root_stats();
6dbb1796
EB		 3740 err = f2fs_init_post_read_processing();
3741 if (err)
3742 goto free_root_stats;
9890ff3f
ZH		 3743 return 0;
3744
6dbb1796
EB		 3745free_root_stats:
3746 f2fs_destroy_root_stats();
787c7b8c 3747 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3748free_shrinker:
3749 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3750free_sysfs:
dc6b2055 3751 f2fs_exit_sysfs();
1dcc336b 3752free_extent_cache:
4d57b86d 3753 f2fs_destroy_extent_cache();
9890ff3f 3754free_checkpoint_caches:
4d57b86d 3755 f2fs_destroy_checkpoint_caches();
7fd9e544 3756free_segment_manager_caches:
4d57b86d 3757 f2fs_destroy_segment_manager_caches();
9890ff3f 3758free_node_manager_caches:
4d57b86d 3759 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3760free_inodecache:
3761 destroy_inodecache();
aff063e2
JK		 3762fail:
3763 return err;
3764}
3765
3766static void __exit exit_f2fs_fs(void)
3767{
6dbb1796 3768 f2fs_destroy_post_read_processing();
4589d25d 3769 f2fs_destroy_root_stats();
aff063e2 3770 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3771 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3772 f2fs_exit_sysfs();
4d57b86d
CY		 3773 f2fs_destroy_extent_cache();
3774 f2fs_destroy_checkpoint_caches();
3775 f2fs_destroy_segment_manager_caches();
3776 f2fs_destroy_node_manager_caches();
aff063e2 3777 destroy_inodecache();
351f4fba 3778 f2fs_destroy_trace_ios();
aff063e2
JK		 3779}
3780
3781module_init(init_f2fs_fs)
3782module_exit(exit_f2fs_fs)
3783
3784MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3785MODULE_DESCRIPTION("Flash Friendly File System");
3786MODULE_LICENSE("GPL");
b4b9d34c 3787
Linux 6.x block layer and io_uring tree(s)