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f2fs: code cleanup for f2fs_statfs_project()
[mirror_ubuntu-hirsute-kernel.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,
4c8ff709
CY		 144 Opt_compress_algorithm,
145 Opt_compress_log_size,
146 Opt_compress_extension,
aff063e2
JK		 147 Opt_err,
148};
149
150static match_table_t f2fs_tokens = {
696c018c 151 {Opt_gc_background, "background_gc=%s"},
aff063e2 152 {Opt_disable_roll_forward, "disable_roll_forward"},
2d834bf9 153 {Opt_norecovery, "norecovery"},
aff063e2 154 {Opt_discard, "discard"},
64058be9 155 {Opt_nodiscard, "nodiscard"},
aff063e2 156 {Opt_noheap, "no_heap"},
7a20b8a6 157 {Opt_heap, "heap"},
4058c511 158 {Opt_user_xattr, "user_xattr"},
aff063e2 159 {Opt_nouser_xattr, "nouser_xattr"},
4058c511 160 {Opt_acl, "acl"},
aff063e2
JK		 161 {Opt_noacl, "noacl"},
162 {Opt_active_logs, "active_logs=%u"},
163 {Opt_disable_ext_identify, "disable_ext_identify"},
444c580f 164 {Opt_inline_xattr, "inline_xattr"},
23cf7212 165 {Opt_noinline_xattr, "noinline_xattr"},
6afc662e 166 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
8274de77 167 {Opt_inline_data, "inline_data"},
5efd3c6f 168 {Opt_inline_dentry, "inline_dentry"},
97c1794a 169 {Opt_noinline_dentry, "noinline_dentry"},
6b4afdd7 170 {Opt_flush_merge, "flush_merge"},
69e9e427 171 {Opt_noflush_merge, "noflush_merge"},
0f7b2abd 172 {Opt_nobarrier, "nobarrier"},
d5053a34 173 {Opt_fastboot, "fastboot"},
89672159 174 {Opt_extent_cache, "extent_cache"},
7daaea25 175 {Opt_noextent_cache, "noextent_cache"},
75342797 176 {Opt_noinline_data, "noinline_data"},
343f40f0 177 {Opt_data_flush, "data_flush"},
7e65be49 178 {Opt_reserve_root, "reserve_root=%u"},
7c2e5963
JK		 179 {Opt_resgid, "resgid=%u"},
180 {Opt_resuid, "resuid=%u"},
36abef4e 181 {Opt_mode, "mode=%s"},
ec91538d 182 {Opt_io_size_bits, "io_bits=%u"},
73faec4d 183 {Opt_fault_injection, "fault_injection=%u"},
d494500a 184 {Opt_fault_type, "fault_type=%u"},
6d94c74a
JK		 185 {Opt_lazytime, "lazytime"},
186 {Opt_nolazytime, "nolazytime"},
4b2414d0
CY		 187 {Opt_quota, "quota"},
188 {Opt_noquota, "noquota"},
0abd675e
CY		 189 {Opt_usrquota, "usrquota"},
190 {Opt_grpquota, "grpquota"},
5c57132e 191 {Opt_prjquota, "prjquota"},
4b2414d0
CY		 192 {Opt_usrjquota, "usrjquota=%s"},
193 {Opt_grpjquota, "grpjquota=%s"},
194 {Opt_prjjquota, "prjjquota=%s"},
195 {Opt_offusrjquota, "usrjquota="},
196 {Opt_offgrpjquota, "grpjquota="},
197 {Opt_offprjjquota, "prjjquota="},
198 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
199 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
200 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
0cdd3195 201 {Opt_whint, "whint_mode=%s"},
07939627 202 {Opt_alloc, "alloc_mode=%s"},
93cf93f1 203 {Opt_fsync, "fsync_mode=%s"},
ff62af20 204 {Opt_test_dummy_encryption, "test_dummy_encryption"},
4d3aed70
DR		 205 {Opt_checkpoint_disable, "checkpoint=disable"},
206 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
207 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
208 {Opt_checkpoint_enable, "checkpoint=enable"},
4c8ff709
CY		 209 {Opt_compress_algorithm, "compress_algorithm=%s"},
210 {Opt_compress_log_size, "compress_log_size=%u"},
211 {Opt_compress_extension, "compress_extension=%s"},
aff063e2
JK		 212 {Opt_err, NULL},
213};
214
dcbb4c10 215void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
a07ef784
NJ		 216{
217 struct va_format vaf;
218 va_list args;
dcbb4c10 219 int level;
a07ef784
NJ		 220
221 va_start(args, fmt);
dcbb4c10
JP		 222
223 level = printk_get_level(fmt);
224 vaf.fmt = printk_skip_level(fmt);
a07ef784 225 vaf.va = &args;
dcbb4c10
JP		 226 printk("%c%cF2FS-fs (%s): %pV\n",
227 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
228
a07ef784
NJ		 229 va_end(args);
230}
231
5aba5430
DR		 232#ifdef CONFIG_UNICODE
233static const struct f2fs_sb_encodings {
234 __u16 magic;
235 char *name;
236 char *version;
237} f2fs_sb_encoding_map[] = {
238 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
239};
240
241static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
242 const struct f2fs_sb_encodings **encoding,
243 __u16 *flags)
244{
245 __u16 magic = le16_to_cpu(sb->s_encoding);
246 int i;
247
248 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
249 if (magic == f2fs_sb_encoding_map[i].magic)
250 break;
251
252 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
253 return -EINVAL;
254
255 *encoding = &f2fs_sb_encoding_map[i];
256 *flags = le16_to_cpu(sb->s_encoding_flags);
257
258 return 0;
259}
260#endif
261
7e65be49
JK		 262static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
263{
9a9aecaa
DR		 264 block_t limit = min((sbi->user_block_count << 1) / 1000,
265 sbi->user_block_count - sbi->reserved_blocks);
7e65be49
JK		 266
267 /* limit is 0.2% */
63189b78
CY		 268 if (test_opt(sbi, RESERVE_ROOT) &&
269 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
270 F2FS_OPTION(sbi).root_reserved_blocks = limit;
dcbb4c10
JP		 271 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
272 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 273 }
7c2e5963 274 if (!test_opt(sbi, RESERVE_ROOT) &&
63189b78 275 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
7c2e5963 276 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
63189b78 277 !gid_eq(F2FS_OPTION(sbi).s_resgid,
7c2e5963 278 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
dcbb4c10
JP		 279 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
280 from_kuid_munged(&init_user_ns,
281 F2FS_OPTION(sbi).s_resuid),
282 from_kgid_munged(&init_user_ns,
283 F2FS_OPTION(sbi).s_resgid));
7e65be49
JK		 284}
285
aff063e2
JK		 286static void init_once(void *foo)
287{
288 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
289
aff063e2
JK		 290 inode_init_once(&fi->vfs_inode);
291}
292
4b2414d0
CY		 293#ifdef CONFIG_QUOTA
294static const char * const quotatypes[] = INITQFNAMES;
295#define QTYPE2NAME(t) (quotatypes[t])
296static int f2fs_set_qf_name(struct super_block *sb, int qtype,
297 substring_t *args)
298{
299 struct f2fs_sb_info *sbi = F2FS_SB(sb);
300 char *qname;
301 int ret = -EINVAL;
302
63189b78 303 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 304 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 305 return -EINVAL;
306 }
7beb01f7 307 if (f2fs_sb_has_quota_ino(sbi)) {
dcbb4c10 308 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
ea676733
JK		 309 return 0;
310 }
311
4b2414d0
CY		 312 qname = match_strdup(args);
313 if (!qname) {
dcbb4c10 314 f2fs_err(sbi, "Not enough memory for storing quotafile name");
f365c6cc 315 return -ENOMEM;
4b2414d0 316 }
63189b78
CY		 317 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
318 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
4b2414d0
CY		 319 ret = 0;
320 else
dcbb4c10 321 f2fs_err(sbi, "%s quota file already specified",
4b2414d0
CY		 322 QTYPE2NAME(qtype));
323 goto errout;
324 }
325 if (strchr(qname, '/')) {
dcbb4c10 326 f2fs_err(sbi, "quotafile must be on filesystem root");
4b2414d0
CY		 327 goto errout;
328 }
63189b78 329 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
4b2414d0
CY		 330 set_opt(sbi, QUOTA);
331 return 0;
332errout:
5222595d 333 kvfree(qname);
4b2414d0
CY		 334 return ret;
335}
336
337static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
338{
339 struct f2fs_sb_info *sbi = F2FS_SB(sb);
340
63189b78 341 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 342 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 343 return -EINVAL;
344 }
5222595d 345 kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
63189b78 346 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
4b2414d0
CY		 347 return 0;
348}
349
350static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
351{
352 /*
353 * We do the test below only for project quotas. 'usrquota' and
354 * 'grpquota' mount options are allowed even without quota feature
355 * to support legacy quotas in quota files.
356 */
7beb01f7 357 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
dcbb4c10 358 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
4b2414d0
CY		 359 return -1;
360 }
63189b78
CY		 361 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
362 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
363 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
364 if (test_opt(sbi, USRQUOTA) &&
365 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
4b2414d0
CY		 366 clear_opt(sbi, USRQUOTA);
367
63189b78
CY		 368 if (test_opt(sbi, GRPQUOTA) &&
369 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
4b2414d0
CY		 370 clear_opt(sbi, GRPQUOTA);
371
63189b78
CY		 372 if (test_opt(sbi, PRJQUOTA) &&
373 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4b2414d0
CY		 374 clear_opt(sbi, PRJQUOTA);
375
376 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
377 test_opt(sbi, PRJQUOTA)) {
dcbb4c10 378 f2fs_err(sbi, "old and new quota format mixing");
4b2414d0
CY		 379 return -1;
380 }
381
63189b78 382 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 383 f2fs_err(sbi, "journaled quota format not specified");
4b2414d0
CY		 384 return -1;
385 }
386 }
ea676733 387
7beb01f7 388 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 389 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
63189b78 390 F2FS_OPTION(sbi).s_jquota_fmt = 0;
ea676733 391 }
4b2414d0
CY		 392 return 0;
393}
394#endif
395
696c018c
NJ		 396static int parse_options(struct super_block *sb, char *options)
397{
398 struct f2fs_sb_info *sbi = F2FS_SB(sb);
399 substring_t args[MAX_OPT_ARGS];
4c8ff709 400 unsigned char (*ext)[F2FS_EXTENSION_LEN];
696c018c 401 char *p, *name;
4c8ff709 402 int arg = 0, ext_cnt;
7c2e5963
JK		 403 kuid_t uid;
404 kgid_t gid;
4b2414d0
CY		 405#ifdef CONFIG_QUOTA
406 int ret;
407#endif
696c018c
NJ		 408
409 if (!options)
410 return 0;
411
412 while ((p = strsep(&options, ",")) != NULL) {
413 int token;
414 if (!*p)
415 continue;
416 /*
417 * Initialize args struct so we know whether arg was
418 * found; some options take optional arguments.
419 */
420 args[0].to = args[0].from = NULL;
421 token = match_token(p, f2fs_tokens, args);
422
423 switch (token) {
424 case Opt_gc_background:
425 name = match_strdup(&args[0]);
426
427 if (!name)
428 return -ENOMEM;
6aefd93b 429 if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
696c018c 430 set_opt(sbi, BG_GC);
6aefd93b
JK		 431 clear_opt(sbi, FORCE_FG_GC);
432 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
696c018c 433 clear_opt(sbi, BG_GC);
6aefd93b
JK		 434 clear_opt(sbi, FORCE_FG_GC);
435 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
436 set_opt(sbi, BG_GC);
437 set_opt(sbi, FORCE_FG_GC);
438 } else {
5222595d 439 kvfree(name);
696c018c
NJ		 440 return -EINVAL;
441 }
5222595d 442 kvfree(name);
696c018c
NJ		 443 break;
444 case Opt_disable_roll_forward:
445 set_opt(sbi, DISABLE_ROLL_FORWARD);
446 break;
2d834bf9
JK		 447 case Opt_norecovery:
448 /* this option mounts f2fs with ro */
449 set_opt(sbi, DISABLE_ROLL_FORWARD);
450 if (!f2fs_readonly(sb))
451 return -EINVAL;
452 break;
696c018c 453 case Opt_discard:
7d20c8ab 454 set_opt(sbi, DISCARD);
696c018c 455 break;
64058be9 456 case Opt_nodiscard:
7beb01f7 457 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 458 f2fs_warn(sbi, "discard is required for zoned block devices");
96ba2dec
DLM		 459 return -EINVAL;
460 }
64058be9 461 clear_opt(sbi, DISCARD);
487df616 462 break;
696c018c
NJ		 463 case Opt_noheap:
464 set_opt(sbi, NOHEAP);
465 break;
7a20b8a6
JK		 466 case Opt_heap:
467 clear_opt(sbi, NOHEAP);
468 break;
696c018c 469#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 470 case Opt_user_xattr:
471 set_opt(sbi, XATTR_USER);
472 break;
696c018c
NJ		 473 case Opt_nouser_xattr:
474 clear_opt(sbi, XATTR_USER);
475 break;
444c580f
JK		 476 case Opt_inline_xattr:
477 set_opt(sbi, INLINE_XATTR);
478 break;
23cf7212
CY		 479 case Opt_noinline_xattr:
480 clear_opt(sbi, INLINE_XATTR);
481 break;
6afc662e
CY		 482 case Opt_inline_xattr_size:
483 if (args->from && match_int(args, &arg))
484 return -EINVAL;
485 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 486 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 487 break;
696c018c 488#else
4058c511 489 case Opt_user_xattr:
dcbb4c10 490 f2fs_info(sbi, "user_xattr options not supported");
4058c511 491 break;
696c018c 492 case Opt_nouser_xattr:
dcbb4c10 493 f2fs_info(sbi, "nouser_xattr options not supported");
696c018c 494 break;
444c580f 495 case Opt_inline_xattr:
dcbb4c10 496 f2fs_info(sbi, "inline_xattr options not supported");
444c580f 497 break;
23cf7212 498 case Opt_noinline_xattr:
dcbb4c10 499 f2fs_info(sbi, "noinline_xattr options not supported");
23cf7212 500 break;
696c018c
NJ		 501#endif
502#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 503 case Opt_acl:
504 set_opt(sbi, POSIX_ACL);
505 break;
696c018c
NJ		 506 case Opt_noacl:
507 clear_opt(sbi, POSIX_ACL);
508 break;
509#else
4058c511 510 case Opt_acl:
dcbb4c10 511 f2fs_info(sbi, "acl options not supported");
4058c511 512 break;
696c018c 513 case Opt_noacl:
dcbb4c10 514 f2fs_info(sbi, "noacl options not supported");
696c018c
NJ		 515 break;
516#endif
517 case Opt_active_logs:
518 if (args->from && match_int(args, &arg))
519 return -EINVAL;
520 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
521 return -EINVAL;
63189b78 522 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 523 break;
524 case Opt_disable_ext_identify:
525 set_opt(sbi, DISABLE_EXT_IDENTIFY);
526 break;
8274de77
HL		 527 case Opt_inline_data:
528 set_opt(sbi, INLINE_DATA);
529 break;
5efd3c6f
CY		 530 case Opt_inline_dentry:
531 set_opt(sbi, INLINE_DENTRY);
532 break;
97c1794a
CY		 533 case Opt_noinline_dentry:
534 clear_opt(sbi, INLINE_DENTRY);
535 break;
6b4afdd7
JK		 536 case Opt_flush_merge:
537 set_opt(sbi, FLUSH_MERGE);
538 break;
69e9e427
JK		 539 case Opt_noflush_merge:
540 clear_opt(sbi, FLUSH_MERGE);
541 break;
0f7b2abd
JK		 542 case Opt_nobarrier:
543 set_opt(sbi, NOBARRIER);
544 break;
d5053a34
JK		 545 case Opt_fastboot:
546 set_opt(sbi, FASTBOOT);
547 break;
89672159
CY		 548 case Opt_extent_cache:
549 set_opt(sbi, EXTENT_CACHE);
550 break;
7daaea25
JK		 551 case Opt_noextent_cache:
552 clear_opt(sbi, EXTENT_CACHE);
553 break;
75342797
WL		 554 case Opt_noinline_data:
555 clear_opt(sbi, INLINE_DATA);
556 break;
343f40f0
CY		 557 case Opt_data_flush:
558 set_opt(sbi, DATA_FLUSH);
559 break;
7e65be49
JK		 560 case Opt_reserve_root:
561 if (args->from && match_int(args, &arg))
562 return -EINVAL;
563 if (test_opt(sbi, RESERVE_ROOT)) {
dcbb4c10
JP		 564 f2fs_info(sbi, "Preserve previous reserve_root=%u",
565 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 566 } else {
63189b78 567 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 568 set_opt(sbi, RESERVE_ROOT);
569 }
570 break;
7c2e5963
JK		 571 case Opt_resuid:
572 if (args->from && match_int(args, &arg))
573 return -EINVAL;
574 uid = make_kuid(current_user_ns(), arg);
575 if (!uid_valid(uid)) {
dcbb4c10 576 f2fs_err(sbi, "Invalid uid value %d", arg);
7c2e5963
JK		 577 return -EINVAL;
578 }
63189b78 579 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 580 break;
581 case Opt_resgid:
582 if (args->from && match_int(args, &arg))
583 return -EINVAL;
584 gid = make_kgid(current_user_ns(), arg);
585 if (!gid_valid(gid)) {
dcbb4c10 586 f2fs_err(sbi, "Invalid gid value %d", arg);
7c2e5963
JK		 587 return -EINVAL;
588 }
63189b78 589 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 590 break;
36abef4e
JK		 591 case Opt_mode:
592 name = match_strdup(&args[0]);
593
594 if (!name)
595 return -ENOMEM;
596 if (strlen(name) == 8 &&
597 !strncmp(name, "adaptive", 8)) {
7beb01f7 598 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 599 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
5222595d 600 kvfree(name);
3adc57e9
DLM		 601 return -EINVAL;
602 }
52763a4b 603 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
36abef4e
JK		 604 } else if (strlen(name) == 3 &&
605 !strncmp(name, "lfs", 3)) {
52763a4b 606 set_opt_mode(sbi, F2FS_MOUNT_LFS);
36abef4e 607 } else {
5222595d 608 kvfree(name);
36abef4e
JK		 609 return -EINVAL;
610 }
5222595d 611 kvfree(name);
36abef4e 612 break;
ec91538d
JK		 613 case Opt_io_size_bits:
614 if (args->from && match_int(args, &arg))
615 return -EINVAL;
6d52e135 616 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
dcbb4c10
JP		 617 f2fs_warn(sbi, "Not support %d, larger than %d",
618 1 << arg, BIO_MAX_PAGES);
ec91538d
JK		 619 return -EINVAL;
620 }
63189b78 621 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 622 break;
4cb037ec 623#ifdef CONFIG_F2FS_FAULT_INJECTION
73faec4d
JK		 624 case Opt_fault_injection:
625 if (args->from && match_int(args, &arg))
626 return -EINVAL;
d494500a
CY		 627 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
628 set_opt(sbi, FAULT_INJECTION);
d494500a 629 break;
4cb037ec 630
d494500a
CY		 631 case Opt_fault_type:
632 if (args->from && match_int(args, &arg))
633 return -EINVAL;
d494500a 634 f2fs_build_fault_attr(sbi, 0, arg);
0cc0dec2 635 set_opt(sbi, FAULT_INJECTION);
4cb037ec 636 break;
73faec4d 637#else
4cb037ec 638 case Opt_fault_injection:
dcbb4c10 639 f2fs_info(sbi, "fault_injection options not supported");
73faec4d 640 break;
4cb037ec
CX		 641
642 case Opt_fault_type:
dcbb4c10 643 f2fs_info(sbi, "fault_type options not supported");
4cb037ec
CX		 644 break;
645#endif
6d94c74a 646 case Opt_lazytime:
1751e8a6 647 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 648 break;
649 case Opt_nolazytime:
1751e8a6 650 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 651 break;
0abd675e 652#ifdef CONFIG_QUOTA
4b2414d0 653 case Opt_quota:
0abd675e
CY		 654 case Opt_usrquota:
655 set_opt(sbi, USRQUOTA);
656 break;
657 case Opt_grpquota:
658 set_opt(sbi, GRPQUOTA);
659 break;
5c57132e
CY		 660 case Opt_prjquota:
661 set_opt(sbi, PRJQUOTA);
662 break;
4b2414d0
CY		 663 case Opt_usrjquota:
664 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
665 if (ret)
666 return ret;
667 break;
668 case Opt_grpjquota:
669 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
670 if (ret)
671 return ret;
672 break;
673 case Opt_prjjquota:
674 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
675 if (ret)
676 return ret;
677 break;
678 case Opt_offusrjquota:
679 ret = f2fs_clear_qf_name(sb, USRQUOTA);
680 if (ret)
681 return ret;
682 break;
683 case Opt_offgrpjquota:
684 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
685 if (ret)
686 return ret;
687 break;
688 case Opt_offprjjquota:
689 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
690 if (ret)
691 return ret;
692 break;
693 case Opt_jqfmt_vfsold:
63189b78 694 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 695 break;
696 case Opt_jqfmt_vfsv0:
63189b78 697 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 698 break;
699 case Opt_jqfmt_vfsv1:
63189b78 700 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 701 break;
702 case Opt_noquota:
703 clear_opt(sbi, QUOTA);
704 clear_opt(sbi, USRQUOTA);
705 clear_opt(sbi, GRPQUOTA);
706 clear_opt(sbi, PRJQUOTA);
707 break;
0abd675e 708#else
4b2414d0 709 case Opt_quota:
0abd675e
CY		 710 case Opt_usrquota:
711 case Opt_grpquota:
5c57132e 712 case Opt_prjquota:
4b2414d0
CY		 713 case Opt_usrjquota:
714 case Opt_grpjquota:
715 case Opt_prjjquota:
716 case Opt_offusrjquota:
717 case Opt_offgrpjquota:
718 case Opt_offprjjquota:
719 case Opt_jqfmt_vfsold:
720 case Opt_jqfmt_vfsv0:
721 case Opt_jqfmt_vfsv1:
722 case Opt_noquota:
dcbb4c10 723 f2fs_info(sbi, "quota operations not supported");
0abd675e
CY		 724 break;
725#endif
0cdd3195
HL		 726 case Opt_whint:
727 name = match_strdup(&args[0]);
728 if (!name)
729 return -ENOMEM;
730 if (strlen(name) == 10 &&
731 !strncmp(name, "user-based", 10)) {
63189b78 732 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
0cdd3195
HL		 733 } else if (strlen(name) == 3 &&
734 !strncmp(name, "off", 3)) {
63189b78 735 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
f2e703f9
HL		 736 } else if (strlen(name) == 8 &&
737 !strncmp(name, "fs-based", 8)) {
63189b78 738 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
0cdd3195 739 } else {
5222595d 740 kvfree(name);
0cdd3195
HL		 741 return -EINVAL;
742 }
5222595d 743 kvfree(name);
0cdd3195 744 break;
07939627
JK		 745 case Opt_alloc:
746 name = match_strdup(&args[0]);
747 if (!name)
748 return -ENOMEM;
749
750 if (strlen(name) == 7 &&
751 !strncmp(name, "default", 7)) {
63189b78 752 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
07939627
JK		 753 } else if (strlen(name) == 5 &&
754 !strncmp(name, "reuse", 5)) {
63189b78 755 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627 756 } else {
5222595d 757 kvfree(name);
07939627
JK		 758 return -EINVAL;
759 }
5222595d 760 kvfree(name);
07939627 761 break;
93cf93f1
JZ		 762 case Opt_fsync:
763 name = match_strdup(&args[0]);
764 if (!name)
765 return -ENOMEM;
766 if (strlen(name) == 5 &&
767 !strncmp(name, "posix", 5)) {
63189b78 768 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
93cf93f1
JZ		 769 } else if (strlen(name) == 6 &&
770 !strncmp(name, "strict", 6)) {
63189b78 771 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
d6290814
JK		 772 } else if (strlen(name) == 9 &&
773 !strncmp(name, "nobarrier", 9)) {
774 F2FS_OPTION(sbi).fsync_mode =
775 FSYNC_MODE_NOBARRIER;
93cf93f1 776 } else {
5222595d 777 kvfree(name);
93cf93f1
JZ		 778 return -EINVAL;
779 }
5222595d 780 kvfree(name);
93cf93f1 781 break;
ff62af20 782 case Opt_test_dummy_encryption:
643fa961 783#ifdef CONFIG_FS_ENCRYPTION
7beb01f7 784 if (!f2fs_sb_has_encrypt(sbi)) {
dcbb4c10 785 f2fs_err(sbi, "Encrypt feature is off");
ff62af20
SY		 786 return -EINVAL;
787 }
788
789 F2FS_OPTION(sbi).test_dummy_encryption = true;
dcbb4c10 790 f2fs_info(sbi, "Test dummy encryption mode enabled");
ff62af20 791#else
dcbb4c10 792 f2fs_info(sbi, "Test dummy encryption mount option ignored");
ff62af20
SY		 793#endif
794 break;
4d3aed70
DR		 795 case Opt_checkpoint_disable_cap_perc:
796 if (args->from && match_int(args, &arg))
4354994f 797 return -EINVAL;
4d3aed70
DR		 798 if (arg < 0 || arg > 100)
799 return -EINVAL;
800 if (arg == 100)
801 F2FS_OPTION(sbi).unusable_cap =
802 sbi->user_block_count;
803 else
804 F2FS_OPTION(sbi).unusable_cap =
805 (sbi->user_block_count / 100) * arg;
806 set_opt(sbi, DISABLE_CHECKPOINT);
807 break;
808 case Opt_checkpoint_disable_cap:
809 if (args->from && match_int(args, &arg))
810 return -EINVAL;
811 F2FS_OPTION(sbi).unusable_cap = arg;
812 set_opt(sbi, DISABLE_CHECKPOINT);
813 break;
814 case Opt_checkpoint_disable:
815 set_opt(sbi, DISABLE_CHECKPOINT);
816 break;
817 case Opt_checkpoint_enable:
818 clear_opt(sbi, DISABLE_CHECKPOINT);
4354994f 819 break;
4c8ff709
CY		 820 case Opt_compress_algorithm:
821 if (!f2fs_sb_has_compression(sbi)) {
822 f2fs_err(sbi, "Compression feature if off");
823 return -EINVAL;
824 }
825 name = match_strdup(&args[0]);
826 if (!name)
827 return -ENOMEM;
828 if (strlen(name) == 3 && !strcmp(name, "lzo")) {
829 F2FS_OPTION(sbi).compress_algorithm =
830 COMPRESS_LZO;
831 } else if (strlen(name) == 3 &&
832 !strcmp(name, "lz4")) {
833 F2FS_OPTION(sbi).compress_algorithm =
834 COMPRESS_LZ4;
835 } else {
836 kfree(name);
837 return -EINVAL;
838 }
839 kfree(name);
840 break;
841 case Opt_compress_log_size:
842 if (!f2fs_sb_has_compression(sbi)) {
843 f2fs_err(sbi, "Compression feature is off");
844 return -EINVAL;
845 }
846 if (args->from && match_int(args, &arg))
847 return -EINVAL;
848 if (arg < MIN_COMPRESS_LOG_SIZE ||
849 arg > MAX_COMPRESS_LOG_SIZE) {
850 f2fs_err(sbi,
851 "Compress cluster log size is out of range");
852 return -EINVAL;
853 }
854 F2FS_OPTION(sbi).compress_log_size = arg;
855 break;
856 case Opt_compress_extension:
857 if (!f2fs_sb_has_compression(sbi)) {
858 f2fs_err(sbi, "Compression feature is off");
859 return -EINVAL;
860 }
861 name = match_strdup(&args[0]);
862 if (!name)
863 return -ENOMEM;
864
865 ext = F2FS_OPTION(sbi).extensions;
866 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
867
868 if (strlen(name) >= F2FS_EXTENSION_LEN ||
869 ext_cnt >= COMPRESS_EXT_NUM) {
870 f2fs_err(sbi,
871 "invalid extension length/number");
872 kfree(name);
873 return -EINVAL;
874 }
875
876 strcpy(ext[ext_cnt], name);
877 F2FS_OPTION(sbi).compress_ext_cnt++;
878 kfree(name);
879 break;
696c018c 880 default:
dcbb4c10
JP		 881 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
882 p);
696c018c
NJ		 883 return -EINVAL;
884 }
885 }
4b2414d0
CY		 886#ifdef CONFIG_QUOTA
887 if (f2fs_check_quota_options(sbi))
888 return -EINVAL;
00960c2c 889#else
7beb01f7 890 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 891 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
00960c2c
SY		 892 return -EINVAL;
893 }
7beb01f7 894 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 895 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
4ddc1b28
CY		 896 return -EINVAL;
897 }
4b2414d0 898#endif
5aba5430
DR		 899#ifndef CONFIG_UNICODE
900 if (f2fs_sb_has_casefold(sbi)) {
901 f2fs_err(sbi,
902 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
903 return -EINVAL;
904 }
905#endif
ec91538d
JK		 906
907 if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
dcbb4c10
JP		 908 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
909 F2FS_IO_SIZE_KB(sbi));
ec91538d
JK		 910 return -EINVAL;
911 }
6afc662e
CY		 912
913 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
70db5b04
JK		 914 int min_size, max_size;
915
7beb01f7
CY		 916 if (!f2fs_sb_has_extra_attr(sbi) ||
917 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
dcbb4c10 918 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
4d817ae0
CY		 919 return -EINVAL;
920 }
6afc662e 921 if (!test_opt(sbi, INLINE_XATTR)) {
dcbb4c10 922 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
6afc662e
CY		 923 return -EINVAL;
924 }
70db5b04
JK		 925
926 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
dd6c89b5 927 max_size = MAX_INLINE_XATTR_SIZE;
70db5b04
JK		 928
929 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
930 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
dcbb4c10
JP		 931 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
932 min_size, max_size);
6afc662e
CY		 933 return -EINVAL;
934 }
935 }
0cdd3195 936
4354994f 937 if (test_opt(sbi, DISABLE_CHECKPOINT) && test_opt(sbi, LFS)) {
dcbb4c10 938 f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
4354994f
DR		 939 return -EINVAL;
940 }
941
0cdd3195
HL		 942 /* Not pass down write hints if the number of active logs is lesser
943 * than NR_CURSEG_TYPE.
944 */
63189b78
CY		 945 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
946 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 947 return 0;
948}
949
aff063e2
JK		 950static struct inode *f2fs_alloc_inode(struct super_block *sb)
951{
952 struct f2fs_inode_info *fi;
953
a0acdfe0 954 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 955 if (!fi)
956 return NULL;
957
958 init_once((void *) fi);
959
434720fa 960 /* Initialize f2fs-specific inode info */
204706c7 961 atomic_set(&fi->dirty_pages, 0);
d928bfbf 962 init_rwsem(&fi->i_sem);
2710fd7e 963 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 964 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 965 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 966 INIT_LIST_HEAD(&fi->inmem_pages);
967 mutex_init(&fi->inmem_lock);
b2532c69
CY		 968 init_rwsem(&fi->i_gc_rwsem[READ]);
969 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 970 init_rwsem(&fi->i_mmap_sem);
27161f13 971 init_rwsem(&fi->i_xattr_sem);
aff063e2 972
ab9fa662
JK		 973 /* Will be used by directory only */
974 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 975
aff063e2
JK		 976 return &fi->vfs_inode;
977}
978
531ad7d5
JK		 979static int f2fs_drop_inode(struct inode *inode)
980{
a8933b6b 981 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
b8d96a30 982 int ret;
a8933b6b
CY		 983
984 /*
985 * during filesystem shutdown, if checkpoint is disabled,
986 * drop useless meta/node dirty pages.
987 */
988 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
989 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
990 inode->i_ino == F2FS_META_INO(sbi)) {
991 trace_f2fs_drop_inode(inode, 1);
992 return 1;
993 }
994 }
995
531ad7d5
JK		 996 /*
997 * This is to avoid a deadlock condition like below.
998 * writeback_single_inode(inode)
999 * - f2fs_write_data_page
1000 * - f2fs_gc -> iput -> evict
1001 * - inode_wait_for_writeback(inode)
1002 */
0f18b462 1003 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 1004 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 1005 /* to avoid evict_inode call simultaneously */
1006 atomic_inc(&inode->i_count);
06e1bc05
JK		 1007 spin_unlock(&inode->i_lock);
1008
1009 /* some remained atomic pages should discarded */
1010 if (f2fs_is_atomic_file(inode))
4d57b86d 1011 f2fs_drop_inmem_pages(inode);
06e1bc05 1012
3e72f721
JK		 1013 /* should remain fi->extent_tree for writepage */
1014 f2fs_destroy_extent_node(inode);
1015
06e1bc05 1016 sb_start_intwrite(inode->i_sb);
fc9581c8 1017 f2fs_i_size_write(inode, 0);
06e1bc05 1018
a0770e13 1019 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1020 inode, NULL, 0, DATA);
1021 truncate_inode_pages_final(inode->i_mapping);
1022
06e1bc05 1023 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 1024 f2fs_truncate(inode);
06e1bc05
JK		 1025
1026 sb_end_intwrite(inode->i_sb);
1027
06e1bc05 1028 spin_lock(&inode->i_lock);
3e72f721 1029 atomic_dec(&inode->i_count);
06e1bc05 1030 }
b8d96a30 1031 trace_f2fs_drop_inode(inode, 0);
531ad7d5 1032 return 0;
06e1bc05 1033 }
b8d96a30 1034 ret = generic_drop_inode(inode);
8ce589c7
EB		 1035 if (!ret)
1036 ret = fscrypt_drop_inode(inode);
b8d96a30
HP		 1037 trace_f2fs_drop_inode(inode, ret);
1038 return ret;
531ad7d5
JK		 1039}
1040
7c45729a 1041int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 1042{
0f18b462 1043 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 1044 int ret = 0;
0f18b462 1045
0f18b462
JK		 1046 spin_lock(&sbi->inode_lock[DIRTY_META]);
1047 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 1048 ret = 1;
1049 } else {
1050 set_inode_flag(inode, FI_DIRTY_INODE);
1051 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 1052 }
7c45729a
JK		 1053 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1054 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 1055 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 1056 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1057 }
338bbfa0 1058 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 1059 return ret;
0f18b462
JK		 1060}
1061
1062void f2fs_inode_synced(struct inode *inode)
1063{
1064 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1065
1066 spin_lock(&sbi->inode_lock[DIRTY_META]);
1067 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1068 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1069 return;
1070 }
7c45729a
JK		 1071 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1072 list_del_init(&F2FS_I(inode)->gdirty_list);
1073 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1074 }
0f18b462 1075 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 1076 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 1077 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 1078 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 1079}
1080
b56ab837
JK		 1081/*
1082 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1083 *
1084 * We should call set_dirty_inode to write the dirty inode through write_inode.
1085 */
1086static void f2fs_dirty_inode(struct inode *inode, int flags)
1087{
1088 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1089
1090 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1091 inode->i_ino == F2FS_META_INO(sbi))
1092 return;
1093
1094 if (flags == I_DIRTY_TIME)
1095 return;
1096
1097 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1098 clear_inode_flag(inode, FI_AUTO_RECOVER);
1099
7c45729a 1100 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 1101}
1102
d01718a0 1103static void f2fs_free_inode(struct inode *inode)
aff063e2 1104{
2c58d548 1105 fscrypt_free_inode(inode);
aff063e2
JK		 1106 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1107}
1108
523be8a6
JK		 1109static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1110{
41382ec4 1111 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 1112 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 1113}
1114
3c62be17
JK		 1115static void destroy_device_list(struct f2fs_sb_info *sbi)
1116{
1117 int i;
1118
1119 for (i = 0; i < sbi->s_ndevs; i++) {
1120 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1121#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1122 kvfree(FDEV(i).blkz_seq);
3c62be17
JK		 1123#endif
1124 }
5222595d 1125 kvfree(sbi->devs);
3c62be17
JK		 1126}
1127
aff063e2
JK		 1128static void f2fs_put_super(struct super_block *sb)
1129{
1130 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1131 int i;
cf5c759f 1132 bool dropped;
aff063e2 1133
0abd675e 1134 f2fs_quota_off_umount(sb);
aff063e2 1135
2658e50d
JK		 1136 /* prevent remaining shrinker jobs */
1137 mutex_lock(&sbi->umount_mutex);
1138
85dc2f2c
JK		 1139 /*
1140 * We don't need to do checkpoint when superblock is clean.
1141 * But, the previous checkpoint was not done by umount, it needs to do
1142 * clean checkpoint again.
1143 */
4354994f
DR		 1144 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1145 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1146 struct cp_control cpc = {
1147 .reason = CP_UMOUNT,
1148 };
4d57b86d 1149 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1150 }
aff063e2 1151
4e6a8d9b 1152 /* be sure to wait for any on-going discard commands */
03f2c02d 1153 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1154
7d20c8ab
CY		 1155 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1156 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1157 struct cp_control cpc = {
1158 .reason = CP_UMOUNT | CP_TRIMMED,
1159 };
4d57b86d 1160 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1161 }
1162
cf779cab
JK		 1163 /*
1164 * normally superblock is clean, so we need to release this.
1165 * In addition, EIO will skip do checkpoint, we need this as well.
1166 */
4d57b86d 1167 f2fs_release_ino_entry(sbi, true);
6f12ac25 1168
2658e50d
JK		 1169 f2fs_leave_shrinker(sbi);
1170 mutex_unlock(&sbi->umount_mutex);
1171
17c19120 1172 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1173 f2fs_flush_merged_writes(sbi);
17c19120 1174
50fa53ec
CY		 1175 f2fs_wait_on_all_pages_writeback(sbi);
1176
1177 f2fs_bug_on(sbi, sbi->fsync_node_num);
1178
aff063e2 1179 iput(sbi->node_inode);
7c77bf7d
JK		 1180 sbi->node_inode = NULL;
1181
aff063e2 1182 iput(sbi->meta_inode);
7c77bf7d 1183 sbi->meta_inode = NULL;
aff063e2 1184
60aa4d55
ST		 1185 /*
1186 * iput() can update stat information, if f2fs_write_checkpoint()
1187 * above failed with error.
1188 */
1189 f2fs_destroy_stats(sbi);
1190
aff063e2 1191 /* destroy f2fs internal modules */
4d57b86d
CY		 1192 f2fs_destroy_node_manager(sbi);
1193 f2fs_destroy_segment_manager(sbi);
aff063e2 1194
4c8ff709
CY		 1195 f2fs_destroy_post_read_wq(sbi);
1196
5222595d 1197 kvfree(sbi->ckpt);
a398101a 1198
dc6b2055 1199 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1200
1201 sb->s_fs_info = NULL;
43b6573b
KM		 1202 if (sbi->s_chksum_driver)
1203 crypto_free_shash(sbi->s_chksum_driver);
5222595d 1204 kvfree(sbi->raw_super);
523be8a6 1205
3c62be17 1206 destroy_device_list(sbi);
b6895e8f 1207 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1208#ifdef CONFIG_QUOTA
1209 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1210 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1211#endif
523be8a6 1212 destroy_percpu_info(sbi);
a912b54d 1213 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 1214 kvfree(sbi->write_io[i]);
5aba5430
DR		 1215#ifdef CONFIG_UNICODE
1216 utf8_unload(sbi->s_encoding);
1217#endif
5222595d 1218 kvfree(sbi);
aff063e2
JK		 1219}
1220
1221int f2fs_sync_fs(struct super_block *sb, int sync)
1222{
1223 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1224 int err = 0;
aff063e2 1225
1f227a3e
JK		 1226 if (unlikely(f2fs_cp_error(sbi)))
1227 return 0;
4354994f
DR		 1228 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1229 return 0;
1f227a3e 1230
a2a4a7e4
NJ		 1231 trace_f2fs_sync_fs(sb, sync);
1232
4b2414d0
CY		 1233 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1234 return -EAGAIN;
1235
b7473754 1236 if (sync) {
d5053a34
JK		 1237 struct cp_control cpc;
1238
119ee914
JK		 1239 cpc.reason = __get_cp_reason(sbi);
1240
b7473754 1241 mutex_lock(&sbi->gc_mutex);
4d57b86d 1242 err = f2fs_write_checkpoint(sbi, &cpc);
b7473754 1243 mutex_unlock(&sbi->gc_mutex);
b7473754 1244 }
05ca3632 1245 f2fs_trace_ios(NULL, 1);
aff063e2 1246
c34f42e2 1247 return err;
aff063e2
JK		 1248}
1249
d6212a5f
CL		 1250static int f2fs_freeze(struct super_block *sb)
1251{
77888c1e 1252 if (f2fs_readonly(sb))
d6212a5f
CL		 1253 return 0;
1254
b4b9d34c
JK		 1255 /* IO error happened before */
1256 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1257 return -EIO;
1258
1259 /* must be clean, since sync_filesystem() was already called */
1260 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1261 return -EINVAL;
1262 return 0;
d6212a5f
CL		 1263}
1264
1265static int f2fs_unfreeze(struct super_block *sb)
1266{
1267 return 0;
1268}
1269
ddc34e32
CY		 1270#ifdef CONFIG_QUOTA
1271static int f2fs_statfs_project(struct super_block *sb,
1272 kprojid_t projid, struct kstatfs *buf)
1273{
1274 struct kqid qid;
1275 struct dquot *dquot;
1276 u64 limit;
1277 u64 curblock;
1278
1279 qid = make_kqid_projid(projid);
1280 dquot = dqget(sb, qid);
1281 if (IS_ERR(dquot))
1282 return PTR_ERR(dquot);
955ac6e5 1283 spin_lock(&dquot->dq_dqb_lock);
ddc34e32 1284
bf2cbd3c
CX		 1285 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1286 dquot->dq_dqb.dqb_bhardlimit);
acdf2172
CX		 1287 if (limit)
1288 limit >>= sb->s_blocksize_bits;
909110c0 1289
ddc34e32
CY		 1290 if (limit && buf->f_blocks > limit) {
1291 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1292 buf->f_blocks = limit;
1293 buf->f_bfree = buf->f_bavail =
1294 (buf->f_blocks > curblock) ?
1295 (buf->f_blocks - curblock) : 0;
1296 }
1297
bf2cbd3c
CX		 1298 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1299 dquot->dq_dqb.dqb_ihardlimit);
909110c0 1300
ddc34e32
CY		 1301 if (limit && buf->f_files > limit) {
1302 buf->f_files = limit;
1303 buf->f_ffree =
1304 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1305 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1306 }
1307
955ac6e5 1308 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1309 dqput(dquot);
1310 return 0;
1311}
1312#endif
1313
aff063e2
JK		 1314static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1315{
1316 struct super_block *sb = dentry->d_sb;
1317 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1318 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1319 block_t total_count, user_block_count, start_count;
0cc091d0 1320 u64 avail_node_count;
aff063e2
JK		 1321
1322 total_count = le64_to_cpu(sbi->raw_super->block_count);
1323 user_block_count = sbi->user_block_count;
1324 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1325 buf->f_type = F2FS_SUPER_MAGIC;
1326 buf->f_bsize = sbi->blocksize;
1327
1328 buf->f_blocks = total_count - start_count;
f66c027e 1329 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1330 sbi->current_reserved_blocks;
c9c8ed50
CY		 1331
1332 spin_lock(&sbi->stat_lock);
4354994f
DR		 1333 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1334 buf->f_bfree = 0;
1335 else
1336 buf->f_bfree -= sbi->unusable_block_count;
c9c8ed50 1337 spin_unlock(&sbi->stat_lock);
4354994f 1338
63189b78
CY		 1339 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1340 buf->f_bavail = buf->f_bfree -
1341 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1342 else
1343 buf->f_bavail = 0;
aff063e2 1344
27cae0bc 1345 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1346
1347 if (avail_node_count > user_block_count) {
1348 buf->f_files = user_block_count;
1349 buf->f_ffree = buf->f_bavail;
1350 } else {
1351 buf->f_files = avail_node_count;
1352 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1353 buf->f_bavail);
1354 }
aff063e2 1355
5a20d339 1356 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1357 buf->f_fsid.val[0] = (u32)id;
1358 buf->f_fsid.val[1] = (u32)(id >> 32);
1359
ddc34e32
CY		 1360#ifdef CONFIG_QUOTA
1361 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1362 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1363 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1364 }
1365#endif
aff063e2
JK		 1366 return 0;
1367}
1368
4b2414d0
CY		 1369static inline void f2fs_show_quota_options(struct seq_file *seq,
1370 struct super_block *sb)
1371{
1372#ifdef CONFIG_QUOTA
1373 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1374
63189b78 1375 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1376 char *fmtname = "";
1377
63189b78 1378 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1379 case QFMT_VFS_OLD:
1380 fmtname = "vfsold";
1381 break;
1382 case QFMT_VFS_V0:
1383 fmtname = "vfsv0";
1384 break;
1385 case QFMT_VFS_V1:
1386 fmtname = "vfsv1";
1387 break;
1388 }
1389 seq_printf(seq, ",jqfmt=%s", fmtname);
1390 }
1391
63189b78
CY		 1392 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1393 seq_show_option(seq, "usrjquota",
1394 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1395
63189b78
CY		 1396 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1397 seq_show_option(seq, "grpjquota",
1398 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1399
63189b78
CY		 1400 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1401 seq_show_option(seq, "prjjquota",
1402 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1403#endif
1404}
1405
4c8ff709
CY		 1406static inline void f2fs_show_compress_options(struct seq_file *seq,
1407 struct super_block *sb)
1408{
1409 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1410 char *algtype = "";
1411 int i;
1412
1413 if (!f2fs_sb_has_compression(sbi))
1414 return;
1415
1416 switch (F2FS_OPTION(sbi).compress_algorithm) {
1417 case COMPRESS_LZO:
1418 algtype = "lzo";
1419 break;
1420 case COMPRESS_LZ4:
1421 algtype = "lz4";
1422 break;
1423 }
1424 seq_printf(seq, ",compress_algorithm=%s", algtype);
1425
1426 seq_printf(seq, ",compress_log_size=%u",
1427 F2FS_OPTION(sbi).compress_log_size);
1428
1429 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1430 seq_printf(seq, ",compress_extension=%s",
1431 F2FS_OPTION(sbi).extensions[i]);
1432 }
1433}
1434
aff063e2
JK		 1435static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1436{
1437 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1438
6aefd93b
JK		 1439 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1440 if (test_opt(sbi, FORCE_FG_GC))
1441 seq_printf(seq, ",background_gc=%s", "sync");
1442 else
1443 seq_printf(seq, ",background_gc=%s", "on");
1444 } else {
696c018c 1445 seq_printf(seq, ",background_gc=%s", "off");
6aefd93b 1446 }
aff063e2
JK		 1447 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1448 seq_puts(seq, ",disable_roll_forward");
1449 if (test_opt(sbi, DISCARD))
1450 seq_puts(seq, ",discard");
81621f97
ST		 1451 else
1452 seq_puts(seq, ",nodiscard");
aff063e2 1453 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1454 seq_puts(seq, ",no_heap");
1455 else
1456 seq_puts(seq, ",heap");
aff063e2
JK		 1457#ifdef CONFIG_F2FS_FS_XATTR
1458 if (test_opt(sbi, XATTR_USER))
1459 seq_puts(seq, ",user_xattr");
1460 else
1461 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1462 if (test_opt(sbi, INLINE_XATTR))
1463 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1464 else
1465 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1466 if (test_opt(sbi, INLINE_XATTR_SIZE))
1467 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1468 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1469#endif
1470#ifdef CONFIG_F2FS_FS_POSIX_ACL
1471 if (test_opt(sbi, POSIX_ACL))
1472 seq_puts(seq, ",acl");
1473 else
1474 seq_puts(seq, ",noacl");
1475#endif
1476 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1477 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1478 if (test_opt(sbi, INLINE_DATA))
1479 seq_puts(seq, ",inline_data");
75342797
WL		 1480 else
1481 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1482 if (test_opt(sbi, INLINE_DENTRY))
1483 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1484 else
1485 seq_puts(seq, ",noinline_dentry");
b270ad6f 1486 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1487 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1488 if (test_opt(sbi, NOBARRIER))
1489 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1490 if (test_opt(sbi, FASTBOOT))
1491 seq_puts(seq, ",fastboot");
89672159
CY		 1492 if (test_opt(sbi, EXTENT_CACHE))
1493 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1494 else
1495 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1496 if (test_opt(sbi, DATA_FLUSH))
1497 seq_puts(seq, ",data_flush");
36abef4e
JK		 1498
1499 seq_puts(seq, ",mode=");
1500 if (test_opt(sbi, ADAPTIVE))
1501 seq_puts(seq, "adaptive");
1502 else if (test_opt(sbi, LFS))
1503 seq_puts(seq, "lfs");
63189b78 1504 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1505 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1506 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1507 F2FS_OPTION(sbi).root_reserved_blocks,
1508 from_kuid_munged(&init_user_ns,
1509 F2FS_OPTION(sbi).s_resuid),
1510 from_kgid_munged(&init_user_ns,
1511 F2FS_OPTION(sbi).s_resgid));
ec91538d 1512 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1513 seq_printf(seq, ",io_bits=%u",
1514 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1515#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1516 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1517 seq_printf(seq, ",fault_injection=%u",
63189b78 1518 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1519 seq_printf(seq, ",fault_type=%u",
1520 F2FS_OPTION(sbi).fault_info.inject_type);
1521 }
0cc0dec2 1522#endif
0abd675e 1523#ifdef CONFIG_QUOTA
4b2414d0
CY		 1524 if (test_opt(sbi, QUOTA))
1525 seq_puts(seq, ",quota");
0abd675e
CY		 1526 if (test_opt(sbi, USRQUOTA))
1527 seq_puts(seq, ",usrquota");
1528 if (test_opt(sbi, GRPQUOTA))
1529 seq_puts(seq, ",grpquota");
5c57132e
CY		 1530 if (test_opt(sbi, PRJQUOTA))
1531 seq_puts(seq, ",prjquota");
0cc0dec2 1532#endif
4b2414d0 1533 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1534 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1535 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1536 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1537 seq_printf(seq, ",whint_mode=%s", "fs-based");
643fa961 1538#ifdef CONFIG_FS_ENCRYPTION
ff62af20
SY		 1539 if (F2FS_OPTION(sbi).test_dummy_encryption)
1540 seq_puts(seq, ",test_dummy_encryption");
1541#endif
aff063e2 1542
63189b78 1543 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1544 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1545 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1546 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1547
4354994f 1548 if (test_opt(sbi, DISABLE_CHECKPOINT))
4d3aed70
DR		 1549 seq_printf(seq, ",checkpoint=disable:%u",
1550 F2FS_OPTION(sbi).unusable_cap);
63189b78 1551 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1552 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1553 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1554 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1555 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1556 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
4c8ff709
CY		 1557
1558 f2fs_show_compress_options(seq, sbi->sb);
aff063e2
JK		 1559 return 0;
1560}
1561
498c5e9f
YH		 1562static void default_options(struct f2fs_sb_info *sbi)
1563{
1564 /* init some FS parameters */
63189b78
CY		 1565 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1566 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1567 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1568 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1569 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1570 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1571 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1572 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
4c8ff709
CY		 1573 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZO;
1574 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
1575 F2FS_OPTION(sbi).compress_ext_cnt = 0;
498c5e9f
YH		 1576
1577 set_opt(sbi, BG_GC);
39133a50 1578 set_opt(sbi, INLINE_XATTR);
498c5e9f 1579 set_opt(sbi, INLINE_DATA);
97c1794a 1580 set_opt(sbi, INLINE_DENTRY);
3e72f721 1581 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1582 set_opt(sbi, NOHEAP);
4354994f 1583 clear_opt(sbi, DISABLE_CHECKPOINT);
4d3aed70 1584 F2FS_OPTION(sbi).unusable_cap = 0;
1751e8a6 1585 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1586 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1587 set_opt(sbi, DISCARD);
7beb01f7 1588 if (f2fs_sb_has_blkzoned(sbi))
a39e5365
CY		 1589 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1590 else
52763a4b 1591 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
498c5e9f
YH		 1592
1593#ifdef CONFIG_F2FS_FS_XATTR
1594 set_opt(sbi, XATTR_USER);
1595#endif
1596#ifdef CONFIG_F2FS_FS_POSIX_ACL
1597 set_opt(sbi, POSIX_ACL);
1598#endif
36dbd328 1599
d494500a 1600 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1601}
1602
ea676733
JK		 1603#ifdef CONFIG_QUOTA
1604static int f2fs_enable_quotas(struct super_block *sb);
1605#endif
4354994f
DR		 1606
1607static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1608{
812a9597 1609 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1610 struct cp_control cpc;
812a9597
JK		 1611 int err = 0;
1612 int ret;
4d3aed70 1613 block_t unusable;
4354994f 1614
812a9597 1615 if (s_flags & SB_RDONLY) {
dcbb4c10 1616 f2fs_err(sbi, "checkpoint=disable on readonly fs");
812a9597
JK		 1617 return -EINVAL;
1618 }
4354994f
DR		 1619 sbi->sb->s_flags |= SB_ACTIVE;
1620
4354994f
DR		 1621 f2fs_update_time(sbi, DISABLE_TIME);
1622
1623 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
8f31b466 1624 mutex_lock(&sbi->gc_mutex);
4354994f 1625 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1626 if (err == -ENODATA) {
1627 err = 0;
4354994f 1628 break;
812a9597 1629 }
8f31b466 1630 if (err && err != -EAGAIN)
812a9597 1631 break;
4354994f 1632 }
4354994f 1633
812a9597
JK		 1634 ret = sync_filesystem(sbi->sb);
1635 if (ret || err) {
1636 err = ret ? ret: err;
1637 goto restore_flag;
1638 }
4354994f 1639
4d3aed70
DR		 1640 unusable = f2fs_get_unusable_blocks(sbi);
1641 if (f2fs_disable_cp_again(sbi, unusable)) {
812a9597
JK		 1642 err = -EAGAIN;
1643 goto restore_flag;
1644 }
4354994f
DR		 1645
1646 mutex_lock(&sbi->gc_mutex);
1647 cpc.reason = CP_PAUSE;
1648 set_sbi_flag(sbi, SBI_CP_DISABLED);
896285ad
CY		 1649 err = f2fs_write_checkpoint(sbi, &cpc);
1650 if (err)
1651 goto out_unlock;
4354994f 1652
c9c8ed50 1653 spin_lock(&sbi->stat_lock);
4d3aed70 1654 sbi->unusable_block_count = unusable;
c9c8ed50
CY		 1655 spin_unlock(&sbi->stat_lock);
1656
896285ad 1657out_unlock:
4354994f 1658 mutex_unlock(&sbi->gc_mutex);
812a9597
JK		 1659restore_flag:
1660 sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */
1661 return err;
4354994f
DR		 1662}
1663
1664static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1665{
1666 mutex_lock(&sbi->gc_mutex);
1667 f2fs_dirty_to_prefree(sbi);
1668
1669 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1670 set_sbi_flag(sbi, SBI_IS_DIRTY);
1671 mutex_unlock(&sbi->gc_mutex);
1672
1673 f2fs_sync_fs(sbi->sb, 1);
1674}
1675
696c018c
NJ		 1676static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1677{
1678 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1679 struct f2fs_mount_info org_mount_opt;
0abd675e 1680 unsigned long old_sb_flags;
63189b78 1681 int err;
876dc59e
GZ		 1682 bool need_restart_gc = false;
1683 bool need_stop_gc = false;
9cd81ce3 1684 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f 1685 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1f78adfa 1686 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
4354994f 1687 bool checkpoint_changed;
4b2414d0 1688#ifdef CONFIG_QUOTA
4b2414d0
CY		 1689 int i, j;
1690#endif
696c018c
NJ		 1691
1692 /*
1693 * Save the old mount options in case we
1694 * need to restore them.
1695 */
1696 org_mount_opt = sbi->mount_opt;
0abd675e 1697 old_sb_flags = sb->s_flags;
696c018c 1698
4b2414d0 1699#ifdef CONFIG_QUOTA
63189b78 1700 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1701 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1702 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1703 org_mount_opt.s_qf_names[i] =
1704 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1705 GFP_KERNEL);
1706 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1707 for (j = 0; j < i; j++)
5222595d 1708 kvfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1709 return -ENOMEM;
1710 }
1711 } else {
63189b78 1712 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1713 }
1714 }
1715#endif
1716
df728b0f 1717 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1718 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f 1719 err = f2fs_commit_super(sbi, false);
dcbb4c10
JP		 1720 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1721 err);
df728b0f
JK		 1722 if (!err)
1723 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1724 }
1725
498c5e9f 1726 default_options(sbi);
26666c8a 1727
696c018c
NJ		 1728 /* parse mount options */
1729 err = parse_options(sb, data);
1730 if (err)
1731 goto restore_opts;
4354994f
DR		 1732 checkpoint_changed =
1733 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1734
1735 /*
1736 * Previous and new state of filesystem is RO,
876dc59e 1737 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1738 */
1751e8a6 1739 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1740 goto skip;
1741
ea676733 1742#ifdef CONFIG_QUOTA
1751e8a6 1743 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1744 err = dquot_suspend(sb, -1);
1745 if (err < 0)
1746 goto restore_opts;
4354994f 1747 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1748 /* dquot_resume needs RW */
1751e8a6 1749 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1750 if (sb_any_quota_suspended(sb)) {
1751 dquot_resume(sb, -1);
7beb01f7 1752 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1753 err = f2fs_enable_quotas(sb);
1754 if (err)
1755 goto restore_opts;
1756 }
0abd675e 1757 }
ea676733 1758#endif
9cd81ce3
CY		 1759 /* disallow enable/disable extent_cache dynamically */
1760 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1761 err = -EINVAL;
dcbb4c10 1762 f2fs_warn(sbi, "switch extent_cache option is not allowed");
9cd81ce3
CY		 1763 goto restore_opts;
1764 }
1765
1f78adfa
CY		 1766 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
1767 err = -EINVAL;
1768 f2fs_warn(sbi, "switch io_bits option is not allowed");
1769 goto restore_opts;
1770 }
1771
4354994f
DR		 1772 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1773 err = -EINVAL;
dcbb4c10 1774 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
4354994f
DR		 1775 goto restore_opts;
1776 }
1777
696c018c
NJ		 1778 /*
1779 * We stop the GC thread if FS is mounted as RO
1780 * or if background_gc = off is passed in mount
1781 * option. Also sync the filesystem.
1782 */
1751e8a6 1783 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
696c018c 1784 if (sbi->gc_thread) {
4d57b86d 1785 f2fs_stop_gc_thread(sbi);
876dc59e 1786 need_restart_gc = true;
696c018c 1787 }
aba291b3 1788 } else if (!sbi->gc_thread) {
4d57b86d 1789 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1790 if (err)
1791 goto restore_opts;
876dc59e
GZ		 1792 need_stop_gc = true;
1793 }
1794
63189b78
CY		 1795 if (*flags & SB_RDONLY ||
1796 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1797 writeback_inodes_sb(sb, WB_REASON_SYNC);
1798 sync_inodes_sb(sb);
1799
1800 set_sbi_flag(sbi, SBI_IS_DIRTY);
1801 set_sbi_flag(sbi, SBI_IS_CLOSE);
1802 f2fs_sync_fs(sb, 1);
1803 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1804 }
1805
4354994f
DR		 1806 if (checkpoint_changed) {
1807 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1808 err = f2fs_disable_checkpoint(sbi);
1809 if (err)
1810 goto restore_gc;
1811 } else {
1812 f2fs_enable_checkpoint(sbi);
1813 }
1814 }
1815
876dc59e
GZ		 1816 /*
1817 * We stop issue flush thread if FS is mounted as RO
1818 * or if flush_merge is not passed in mount option.
1819 */
1751e8a6 1820 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1821 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1822 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1823 } else {
4d57b86d 1824 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1825 if (err)
a688b9d9 1826 goto restore_gc;
696c018c
NJ		 1827 }
1828skip:
4b2414d0
CY		 1829#ifdef CONFIG_QUOTA
1830 /* Release old quota file names */
1831 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1832 kvfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1833#endif
696c018c 1834 /* Update the POSIXACL Flag */
1751e8a6
LT		 1835 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1836 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1837
7e65be49 1838 limit_reserve_root(sbi);
095680f2 1839 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1840 return 0;
876dc59e
GZ		 1841restore_gc:
1842 if (need_restart_gc) {
4d57b86d 1843 if (f2fs_start_gc_thread(sbi))
dcbb4c10 1844 f2fs_warn(sbi, "background gc thread has stopped");
876dc59e 1845 } else if (need_stop_gc) {
4d57b86d 1846 f2fs_stop_gc_thread(sbi);
876dc59e 1847 }
696c018c 1848restore_opts:
4b2414d0 1849#ifdef CONFIG_QUOTA
63189b78 1850 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1851 for (i = 0; i < MAXQUOTAS; i++) {
5222595d 1852 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 1853 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1854 }
1855#endif
696c018c 1856 sbi->mount_opt = org_mount_opt;
0abd675e 1857 sb->s_flags = old_sb_flags;
696c018c
NJ		 1858 return err;
1859}
1860
0abd675e
CY		 1861#ifdef CONFIG_QUOTA
1862/* Read data from quotafile */
1863static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1864 size_t len, loff_t off)
1865{
1866 struct inode *inode = sb_dqopt(sb)->files[type];
1867 struct address_space *mapping = inode->i_mapping;
1868 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1869 int offset = off & (sb->s_blocksize - 1);
1870 int tocopy;
1871 size_t toread;
1872 loff_t i_size = i_size_read(inode);
1873 struct page *page;
1874 char *kaddr;
1875
1876 if (off > i_size)
1877 return 0;
1878
1879 if (off + len > i_size)
1880 len = i_size - off;
1881 toread = len;
1882 while (toread > 0) {
1883 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1884repeat:
02117b8a 1885 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1886 if (IS_ERR(page)) {
1887 if (PTR_ERR(page) == -ENOMEM) {
1888 congestion_wait(BLK_RW_ASYNC, HZ/50);
1889 goto repeat;
1890 }
af033b2a 1891 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1892 return PTR_ERR(page);
4e46a023 1893 }
0abd675e
CY		 1894
1895 lock_page(page);
1896
1897 if (unlikely(page->mapping != mapping)) {
1898 f2fs_put_page(page, 1);
1899 goto repeat;
1900 }
1901 if (unlikely(!PageUptodate(page))) {
1902 f2fs_put_page(page, 1);
af033b2a 1903 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1904 return -EIO;
1905 }
1906
1907 kaddr = kmap_atomic(page);
1908 memcpy(data, kaddr + offset, tocopy);
1909 kunmap_atomic(kaddr);
1910 f2fs_put_page(page, 1);
1911
1912 offset = 0;
1913 toread -= tocopy;
1914 data += tocopy;
1915 blkidx++;
1916 }
1917 return len;
1918}
1919
1920/* Write to quotafile */
1921static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1922 const char *data, size_t len, loff_t off)
1923{
1924 struct inode *inode = sb_dqopt(sb)->files[type];
1925 struct address_space *mapping = inode->i_mapping;
1926 const struct address_space_operations *a_ops = mapping->a_ops;
1927 int offset = off & (sb->s_blocksize - 1);
1928 size_t towrite = len;
1929 struct page *page;
1930 char *kaddr;
1931 int err = 0;
1932 int tocopy;
1933
1934 while (towrite > 0) {
1935 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1936 towrite);
4e46a023 1937retry:
0abd675e
CY		 1938 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1939 &page, NULL);
4e46a023
JK		 1940 if (unlikely(err)) {
1941 if (err == -ENOMEM) {
1942 congestion_wait(BLK_RW_ASYNC, HZ/50);
1943 goto retry;
1944 }
af033b2a 1945 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1946 break;
4e46a023 1947 }
0abd675e
CY		 1948
1949 kaddr = kmap_atomic(page);
1950 memcpy(kaddr + offset, data, tocopy);
1951 kunmap_atomic(kaddr);
1952 flush_dcache_page(page);
1953
1954 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1955 page, NULL);
1956 offset = 0;
1957 towrite -= tocopy;
1958 off += tocopy;
1959 data += tocopy;
1960 cond_resched();
1961 }
1962
1963 if (len == towrite)
6e5b5d41 1964 return err;
0abd675e
CY		 1965 inode->i_mtime = inode->i_ctime = current_time(inode);
1966 f2fs_mark_inode_dirty_sync(inode, false);
1967 return len - towrite;
1968}
1969
1970static struct dquot **f2fs_get_dquots(struct inode *inode)
1971{
1972 return F2FS_I(inode)->i_dquot;
1973}
1974
1975static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1976{
1977 return &F2FS_I(inode)->i_reserved_quota;
1978}
1979
4b2414d0
CY		 1980static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1981{
af033b2a 1982 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1983 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
af033b2a
CY		 1984 return 0;
1985 }
1986
63189b78
CY		 1987 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1988 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1989}
1990
ea676733 1991int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1992{
ea676733
JK		 1993 int enabled = 0;
1994 int i, err;
1995
7beb01f7 1996 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 1997 err = f2fs_enable_quotas(sbi->sb);
1998 if (err) {
dcbb4c10 1999 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
ea676733
JK		 2000 return 0;
2001 }
2002 return 1;
2003 }
4b2414d0
CY		 2004
2005 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 2006 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 2007 err = f2fs_quota_on_mount(sbi, i);
2008 if (!err) {
2009 enabled = 1;
2010 continue;
2011 }
dcbb4c10
JP		 2012 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2013 err, i);
4b2414d0
CY		 2014 }
2015 }
ea676733
JK		 2016 return enabled;
2017}
2018
2019static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2020 unsigned int flags)
2021{
2022 struct inode *qf_inode;
2023 unsigned long qf_inum;
2024 int err;
2025
7beb01f7 2026 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 2027
2028 qf_inum = f2fs_qf_ino(sb, type);
2029 if (!qf_inum)
2030 return -EPERM;
2031
2032 qf_inode = f2fs_iget(sb, qf_inum);
2033 if (IS_ERR(qf_inode)) {
dcbb4c10 2034 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
ea676733
JK		 2035 return PTR_ERR(qf_inode);
2036 }
2037
2038 /* Don't account quota for quota files to avoid recursion */
2039 qf_inode->i_flags |= S_NOQUOTA;
7212b95e 2040 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
ea676733
JK		 2041 iput(qf_inode);
2042 return err;
2043}
2044
2045static int f2fs_enable_quotas(struct super_block *sb)
2046{
dcbb4c10 2047 struct f2fs_sb_info *sbi = F2FS_SB(sb);
ea676733
JK		 2048 int type, err = 0;
2049 unsigned long qf_inum;
2050 bool quota_mopt[MAXQUOTAS] = {
dcbb4c10
JP		 2051 test_opt(sbi, USRQUOTA),
2052 test_opt(sbi, GRPQUOTA),
2053 test_opt(sbi, PRJQUOTA),
ea676733
JK		 2054 };
2055
af033b2a 2056 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 2057 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
af033b2a
CY		 2058 return 0;
2059 }
2060
2061 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2062
ea676733
JK		 2063 for (type = 0; type < MAXQUOTAS; type++) {
2064 qf_inum = f2fs_qf_ino(sb, type);
2065 if (qf_inum) {
2066 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2067 DQUOT_USAGE_ENABLED |
2068 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2069 if (err) {
dcbb4c10
JP		 2070 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2071 type, err);
ea676733
JK		 2072 for (type--; type >= 0; type--)
2073 dquot_quota_off(sb, type);
af033b2a
CY		 2074 set_sbi_flag(F2FS_SB(sb),
2075 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 2076 return err;
2077 }
4b2414d0
CY		 2078 }
2079 }
ea676733 2080 return 0;
4b2414d0
CY		 2081}
2082
af033b2a 2083int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 2084{
af033b2a 2085 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 2086 struct quota_info *dqopt = sb_dqopt(sb);
2087 int cnt;
2088 int ret;
2089
db6ec53b
JK		 2090 /*
2091 * do_quotactl
2092 * f2fs_quota_sync
2093 * down_read(quota_sem)
2094 * dquot_writeback_dquots()
2095 * f2fs_dquot_commit
2096 * block_operation
2097 * down_read(quota_sem)
2098 */
2099 f2fs_lock_op(sbi);
2100
2101 down_read(&sbi->quota_sem);
0abd675e
CY		 2102 ret = dquot_writeback_dquots(sb, type);
2103 if (ret)
af033b2a 2104 goto out;
0abd675e
CY		 2105
2106 /*
2107 * Now when everything is written we can discard the pagecache so
2108 * that userspace sees the changes.
2109 */
2110 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 2111 struct address_space *mapping;
2112
0abd675e
CY		 2113 if (type != -1 && cnt != type)
2114 continue;
2115 if (!sb_has_quota_active(sb, cnt))
2116 continue;
2117
af033b2a
CY		 2118 mapping = dqopt->files[cnt]->i_mapping;
2119
2120 ret = filemap_fdatawrite(mapping);
0abd675e 2121 if (ret)
af033b2a
CY		 2122 goto out;
2123
2124 /* if we are using journalled quota */
2125 if (is_journalled_quota(sbi))
2126 continue;
2127
2128 ret = filemap_fdatawait(mapping);
2129 if (ret)
2130 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 2131
2132 inode_lock(dqopt->files[cnt]);
2133 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
2134 inode_unlock(dqopt->files[cnt]);
2135 }
af033b2a
CY		 2136out:
2137 if (ret)
2138 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
db6ec53b
JK		 2139 up_read(&sbi->quota_sem);
2140 f2fs_unlock_op(sbi);
af033b2a 2141 return ret;
0abd675e
CY		 2142}
2143
2144static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2145 const struct path *path)
2146{
2147 struct inode *inode;
2148 int err;
2149
fe973b06
CY		 2150 /* if quota sysfile exists, deny enabling quota with specific file */
2151 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2152 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2153 return -EBUSY;
2154 }
2155
9a20d391 2156 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 2157 if (err)
2158 return err;
2159
2160 err = dquot_quota_on(sb, type, format_id, path);
2161 if (err)
2162 return err;
2163
2164 inode = d_inode(path->dentry);
2165
2166 inode_lock(inode);
59c84408 2167 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 2168 f2fs_set_inode_flags(inode);
0abd675e
CY		 2169 inode_unlock(inode);
2170 f2fs_mark_inode_dirty_sync(inode, false);
2171
2172 return 0;
2173}
2174
fe973b06 2175static int __f2fs_quota_off(struct super_block *sb, int type)
0abd675e
CY		 2176{
2177 struct inode *inode = sb_dqopt(sb)->files[type];
2178 int err;
2179
2180 if (!inode || !igrab(inode))
2181 return dquot_quota_off(sb, type);
2182
cda9cc59
YH		 2183 err = f2fs_quota_sync(sb, type);
2184 if (err)
2185 goto out_put;
0abd675e
CY		 2186
2187 err = dquot_quota_off(sb, type);
7beb01f7 2188 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2189 goto out_put;
2190
2191 inode_lock(inode);
59c84408 2192 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2193 f2fs_set_inode_flags(inode);
0abd675e
CY		 2194 inode_unlock(inode);
2195 f2fs_mark_inode_dirty_sync(inode, false);
2196out_put:
2197 iput(inode);
2198 return err;
2199}
2200
fe973b06
CY		 2201static int f2fs_quota_off(struct super_block *sb, int type)
2202{
2203 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2204 int err;
2205
2206 err = __f2fs_quota_off(sb, type);
2207
2208 /*
2209 * quotactl can shutdown journalled quota, result in inconsistence
2210 * between quota record and fs data by following updates, tag the
2211 * flag to let fsck be aware of it.
2212 */
2213 if (is_journalled_quota(sbi))
2214 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2215 return err;
2216}
2217
4b2414d0 2218void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2219{
2220 int type;
cda9cc59
YH		 2221 int err;
2222
2223 for (type = 0; type < MAXQUOTAS; type++) {
fe973b06 2224 err = __f2fs_quota_off(sb, type);
cda9cc59
YH		 2225 if (err) {
2226 int ret = dquot_quota_off(sb, type);
0abd675e 2227
dcbb4c10
JP		 2228 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2229 type, err, ret);
af033b2a 2230 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2231 }
2232 }
0e0667b6
JK		 2233 /*
2234 * In case of checkpoint=disable, we must flush quota blocks.
2235 * This can cause NULL exception for node_inode in end_io, since
2236 * put_super already dropped it.
2237 */
2238 sync_filesystem(sb);
0abd675e
CY		 2239}
2240
26b5a079
SY		 2241static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2242{
2243 struct quota_info *dqopt = sb_dqopt(sb);
2244 int type;
2245
2246 for (type = 0; type < MAXQUOTAS; type++) {
2247 if (!dqopt->files[type])
2248 continue;
2249 f2fs_inode_synced(dqopt->files[type]);
2250 }
2251}
2252
af033b2a
CY		 2253static int f2fs_dquot_commit(struct dquot *dquot)
2254{
db6ec53b 2255 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2256 int ret;
2257
2c4e0c52 2258 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
af033b2a
CY		 2259 ret = dquot_commit(dquot);
2260 if (ret < 0)
db6ec53b
JK		 2261 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2262 up_read(&sbi->quota_sem);
af033b2a
CY		 2263 return ret;
2264}
2265
2266static int f2fs_dquot_acquire(struct dquot *dquot)
2267{
db6ec53b 2268 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2269 int ret;
2270
db6ec53b 2271 down_read(&sbi->quota_sem);
af033b2a
CY		 2272 ret = dquot_acquire(dquot);
2273 if (ret < 0)
db6ec53b
JK		 2274 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2275 up_read(&sbi->quota_sem);
af033b2a
CY		 2276 return ret;
2277}
2278
2279static int f2fs_dquot_release(struct dquot *dquot)
2280{
db6ec53b 2281 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2c4e0c52 2282 int ret = dquot_release(dquot);
af033b2a 2283
af033b2a 2284 if (ret < 0)
db6ec53b 2285 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2286 return ret;
2287}
2288
2289static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2290{
2291 struct super_block *sb = dquot->dq_sb;
2292 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2293 int ret = dquot_mark_dquot_dirty(dquot);
af033b2a
CY		 2294
2295 /* if we are using journalled quota */
2296 if (is_journalled_quota(sbi))
2297 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2298
2299 return ret;
2300}
2301
2302static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2303{
db6ec53b 2304 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2305 int ret = dquot_commit_info(sb, type);
af033b2a 2306
af033b2a 2307 if (ret < 0)
db6ec53b 2308 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2309 return ret;
2310}
26b5a079 2311
94b1e10e 2312static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2313{
2314 *projid = F2FS_I(inode)->i_projid;
2315 return 0;
2316}
2317
0abd675e
CY		 2318static const struct dquot_operations f2fs_quota_operations = {
2319 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2320 .write_dquot = f2fs_dquot_commit,
2321 .acquire_dquot = f2fs_dquot_acquire,
2322 .release_dquot = f2fs_dquot_release,
2323 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2324 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2325 .alloc_dquot = dquot_alloc,
2326 .destroy_dquot = dquot_destroy,
5c57132e 2327 .get_projid = f2fs_get_projid,
0abd675e
CY		 2328 .get_next_id = dquot_get_next_id,
2329};
2330
2331static const struct quotactl_ops f2fs_quotactl_ops = {
2332 .quota_on = f2fs_quota_on,
2333 .quota_off = f2fs_quota_off,
2334 .quota_sync = f2fs_quota_sync,
2335 .get_state = dquot_get_state,
2336 .set_info = dquot_set_dqinfo,
2337 .get_dqblk = dquot_get_dqblk,
2338 .set_dqblk = dquot_set_dqblk,
2339 .get_nextdqblk = dquot_get_next_dqblk,
2340};
2341#else
af033b2a
CY		 2342int f2fs_quota_sync(struct super_block *sb, int type)
2343{
2344 return 0;
2345}
2346
4b2414d0 2347void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2348{
2349}
2350#endif
2351
f62fc9f9 2352static const struct super_operations f2fs_sops = {
aff063e2 2353 .alloc_inode = f2fs_alloc_inode,
d01718a0 2354 .free_inode = f2fs_free_inode,
531ad7d5 2355 .drop_inode = f2fs_drop_inode,
aff063e2 2356 .write_inode = f2fs_write_inode,
b3783873 2357 .dirty_inode = f2fs_dirty_inode,
aff063e2 2358 .show_options = f2fs_show_options,
0abd675e
CY		 2359#ifdef CONFIG_QUOTA
2360 .quota_read = f2fs_quota_read,
2361 .quota_write = f2fs_quota_write,
2362 .get_dquots = f2fs_get_dquots,
2363#endif
aff063e2
JK		 2364 .evict_inode = f2fs_evict_inode,
2365 .put_super = f2fs_put_super,
2366 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2367 .freeze_fs = f2fs_freeze,
2368 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2369 .statfs = f2fs_statfs,
696c018c 2370 .remount_fs = f2fs_remount,
aff063e2
JK		 2371};
2372
643fa961 2373#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 2374static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2375{
2376 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2377 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2378 ctx, len, NULL);
2379}
2380
2381static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2382 void *fs_data)
2383{
b7c409de
SY		 2384 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2385
2386 /*
2387 * Encrypting the root directory is not allowed because fsck
2388 * expects lost+found directory to exist and remain unencrypted
2389 * if LOST_FOUND feature is enabled.
2390 *
2391 */
7beb01f7 2392 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2393 inode->i_ino == F2FS_ROOT_INO(sbi))
2394 return -EPERM;
2395
0b81d077
JK		 2396 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2397 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2398 ctx, len, fs_data, XATTR_CREATE);
2399}
2400
ff62af20
SY		 2401static bool f2fs_dummy_context(struct inode *inode)
2402{
2403 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2404}
2405
0eee17e3
EB		 2406static bool f2fs_has_stable_inodes(struct super_block *sb)
2407{
2408 return true;
2409}
2410
2411static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
2412 int *ino_bits_ret, int *lblk_bits_ret)
2413{
2414 *ino_bits_ret = 8 * sizeof(nid_t);
2415 *lblk_bits_ret = 8 * sizeof(block_t);
2416}
2417
6f69f0ed 2418static const struct fscrypt_operations f2fs_cryptops = {
0eee17e3
EB		 2419 .key_prefix = "f2fs:",
2420 .get_context = f2fs_get_context,
2421 .set_context = f2fs_set_context,
2422 .dummy_context = f2fs_dummy_context,
2423 .empty_dir = f2fs_empty_dir,
2424 .max_namelen = F2FS_NAME_LEN,
2425 .has_stable_inodes = f2fs_has_stable_inodes,
2426 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
0b81d077 2427};
0b81d077
JK		 2428#endif
2429
aff063e2
JK		 2430static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2431 u64 ino, u32 generation)
2432{
2433 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2434 struct inode *inode;
2435
4d57b86d 2436 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2437 return ERR_PTR(-ESTALE);
aff063e2
JK		 2438
2439 /*
2440 * f2fs_iget isn't quite right if the inode is currently unallocated!
2441 * However f2fs_iget currently does appropriate checks to handle stale
2442 * inodes so everything is OK.
2443 */
2444 inode = f2fs_iget(sb, ino);
2445 if (IS_ERR(inode))
2446 return ERR_CAST(inode);
6bacf52f 2447 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2448 /* we didn't find the right inode.. */
2449 iput(inode);
2450 return ERR_PTR(-ESTALE);
2451 }
2452 return inode;
2453}
2454
2455static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2456 int fh_len, int fh_type)
2457{
2458 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2459 f2fs_nfs_get_inode);
2460}
2461
2462static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2463 int fh_len, int fh_type)
2464{
2465 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2466 f2fs_nfs_get_inode);
2467}
2468
2469static const struct export_operations f2fs_export_ops = {
2470 .fh_to_dentry = f2fs_fh_to_dentry,
2471 .fh_to_parent = f2fs_fh_to_parent,
2472 .get_parent = f2fs_get_parent,
2473};
2474
e0afc4d6 2475static loff_t max_file_blocks(void)
aff063e2 2476{
7a2af766 2477 loff_t result = 0;
d02a6e61 2478 loff_t leaf_count = DEF_ADDRS_PER_BLOCK;
aff063e2 2479
7a2af766
CY		 2480 /*
2481 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2482 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2483 * space in inode.i_addr, it will be more safe to reassign
2484 * result as zero.
2485 */
2486
aff063e2
JK		 2487 /* two direct node blocks */
2488 result += (leaf_count * 2);
2489
2490 /* two indirect node blocks */
2491 leaf_count *= NIDS_PER_BLOCK;
2492 result += (leaf_count * 2);
2493
2494 /* one double indirect node block */
2495 leaf_count *= NIDS_PER_BLOCK;
2496 result += leaf_count;
2497
aff063e2
JK		 2498 return result;
2499}
2500
fd694733
JK		 2501static int __f2fs_commit_super(struct buffer_head *bh,
2502 struct f2fs_super_block *super)
2503{
2504 lock_buffer(bh);
2505 if (super)
2506 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2507 set_buffer_dirty(bh);
2508 unlock_buffer(bh);
2509
2510 /* it's rare case, we can do fua all the time */
3adc5fcb 2511 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2512}
2513
df728b0f 2514static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2515 struct buffer_head *bh)
9a59b62f 2516{
fd694733
JK		 2517 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2518 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2519 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2520 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2521 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2522 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2523 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2524 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2525 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2526 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2527 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2528 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2529 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2530 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2531 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2532 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2533 u64 main_end_blkaddr = main_blkaddr +
2534 (segment_count_main << log_blocks_per_seg);
2535 u64 seg_end_blkaddr = segment0_blkaddr +
2536 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2537
2538 if (segment0_blkaddr != cp_blkaddr) {
dcbb4c10
JP		 2539 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2540 segment0_blkaddr, cp_blkaddr);
9a59b62f
CY		 2541 return true;
2542 }
2543
2544 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2545 sit_blkaddr) {
dcbb4c10
JP		 2546 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2547 cp_blkaddr, sit_blkaddr,
2548 segment_count_ckpt << log_blocks_per_seg);
9a59b62f
CY		 2549 return true;
2550 }
2551
2552 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2553 nat_blkaddr) {
dcbb4c10
JP		 2554 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2555 sit_blkaddr, nat_blkaddr,
2556 segment_count_sit << log_blocks_per_seg);
9a59b62f
CY		 2557 return true;
2558 }
2559
2560 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2561 ssa_blkaddr) {
dcbb4c10
JP		 2562 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2563 nat_blkaddr, ssa_blkaddr,
2564 segment_count_nat << log_blocks_per_seg);
9a59b62f
CY		 2565 return true;
2566 }
2567
2568 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2569 main_blkaddr) {
dcbb4c10
JP		 2570 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2571 ssa_blkaddr, main_blkaddr,
2572 segment_count_ssa << log_blocks_per_seg);
9a59b62f
CY		 2573 return true;
2574 }
2575
fd694733 2576 if (main_end_blkaddr > seg_end_blkaddr) {
dcbb4c10
JP		 2577 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2578 main_blkaddr,
2579 segment0_blkaddr +
2580 (segment_count << log_blocks_per_seg),
2581 segment_count_main << log_blocks_per_seg);
9a59b62f 2582 return true;
fd694733
JK		 2583 } else if (main_end_blkaddr < seg_end_blkaddr) {
2584 int err = 0;
2585 char *res;
2586
2587 /* fix in-memory information all the time */
2588 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2589 segment0_blkaddr) >> log_blocks_per_seg);
2590
2591 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2592 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2593 res = "internally";
2594 } else {
2595 err = __f2fs_commit_super(bh, NULL);
2596 res = err ? "failed" : "done";
2597 }
dcbb4c10
JP		 2598 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2599 res, main_blkaddr,
2600 segment0_blkaddr +
2601 (segment_count << log_blocks_per_seg),
2602 segment_count_main << log_blocks_per_seg);
fd694733
JK		 2603 if (err)
2604 return true;
9a59b62f 2605 }
9a59b62f
CY		 2606 return false;
2607}
2608
df728b0f 2609static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2610 struct buffer_head *bh)
aff063e2 2611{
0cfe75c5
JK		 2612 block_t segment_count, segs_per_sec, secs_per_zone;
2613 block_t total_sections, blocks_per_seg;
fd694733
JK		 2614 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2615 (bh->b_data + F2FS_SUPER_OFFSET);
aff063e2 2616 unsigned int blocksize;
d440c52d
JZ		 2617 size_t crc_offset = 0;
2618 __u32 crc = 0;
2619
38fb6d0e
IZ		 2620 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2621 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2622 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2623 return -EINVAL;
2624 }
2625
d440c52d 2626 /* Check checksum_offset and crc in superblock */
7beb01f7 2627 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2628 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2629 if (crc_offset !=
2630 offsetof(struct f2fs_super_block, crc)) {
dcbb4c10
JP		 2631 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2632 crc_offset);
38fb6d0e 2633 return -EFSCORRUPTED;
d440c52d
JZ		 2634 }
2635 crc = le32_to_cpu(raw_super->crc);
2636 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
dcbb4c10 2637 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
38fb6d0e 2638 return -EFSCORRUPTED;
d440c52d
JZ		 2639 }
2640 }
aff063e2 2641
5c9b4692 2642 /* Currently, support only 4KB page cache size */
09cbfeaf 2643 if (F2FS_BLKSIZE != PAGE_SIZE) {
dcbb4c10
JP		 2644 f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
2645 PAGE_SIZE);
38fb6d0e 2646 return -EFSCORRUPTED;
5c9b4692 2647 }
2648
aff063e2
JK		 2649 /* Currently, support only 4KB block size */
2650 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2651 if (blocksize != F2FS_BLKSIZE) {
dcbb4c10
JP		 2652 f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
2653 blocksize);
38fb6d0e 2654 return -EFSCORRUPTED;
a07ef784 2655 }
5c9b4692 2656
9a59b62f
CY		 2657 /* check log blocks per segment */
2658 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
dcbb4c10
JP		 2659 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2660 le32_to_cpu(raw_super->log_blocks_per_seg));
38fb6d0e 2661 return -EFSCORRUPTED;
9a59b62f
CY		 2662 }
2663
55cf9cb6
CY		 2664 /* Currently, support 512/1024/2048/4096 bytes sector size */
2665 if (le32_to_cpu(raw_super->log_sectorsize) >
2666 F2FS_MAX_LOG_SECTOR_SIZE ||
2667 le32_to_cpu(raw_super->log_sectorsize) <
2668 F2FS_MIN_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2669 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2670 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2671 return -EFSCORRUPTED;
a07ef784 2672 }
55cf9cb6
CY		 2673 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2674 le32_to_cpu(raw_super->log_sectorsize) !=
2675 F2FS_MAX_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2676 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
2677 le32_to_cpu(raw_super->log_sectors_per_block),
2678 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2679 return -EFSCORRUPTED;
a07ef784 2680 }
9a59b62f 2681
0cfe75c5
JK		 2682 segment_count = le32_to_cpu(raw_super->segment_count);
2683 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2684 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2685 total_sections = le32_to_cpu(raw_super->section_count);
2686
2687 /* blocks_per_seg should be 512, given the above check */
2688 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2689
2690 if (segment_count > F2FS_MAX_SEGMENT ||
2691 segment_count < F2FS_MIN_SEGMENTS) {
dcbb4c10 2692 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
38fb6d0e 2693 return -EFSCORRUPTED;
0cfe75c5
JK		 2694 }
2695
2696 if (total_sections > segment_count ||
2697 total_sections < F2FS_MIN_SEGMENTS ||
2698 segs_per_sec > segment_count || !segs_per_sec) {
dcbb4c10
JP		 2699 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
2700 segment_count, total_sections, segs_per_sec);
38fb6d0e 2701 return -EFSCORRUPTED;
0cfe75c5
JK		 2702 }
2703
2704 if ((segment_count / segs_per_sec) < total_sections) {
dcbb4c10
JP		 2705 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
2706 segment_count, segs_per_sec, total_sections);
38fb6d0e 2707 return -EFSCORRUPTED;
0cfe75c5
JK		 2708 }
2709
88960068 2710 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
dcbb4c10
JP		 2711 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
2712 segment_count, le64_to_cpu(raw_super->block_count));
38fb6d0e 2713 return -EFSCORRUPTED;
0cfe75c5
JK		 2714 }
2715
9f701f6c
QS		 2716 if (RDEV(0).path[0]) {
2717 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
2718 int i = 1;
2719
2720 while (i < MAX_DEVICES && RDEV(i).path[0]) {
2721 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
2722 i++;
2723 }
2724 if (segment_count != dev_seg_count) {
2725 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
2726 segment_count, dev_seg_count);
2727 return -EFSCORRUPTED;
2728 }
2729 }
2730
42bf546c 2731 if (secs_per_zone > total_sections || !secs_per_zone) {
dcbb4c10
JP		 2732 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
2733 secs_per_zone, total_sections);
38fb6d0e 2734 return -EFSCORRUPTED;
0cfe75c5
JK		 2735 }
2736 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2737 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2738 (le32_to_cpu(raw_super->extension_count) +
2739 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
dcbb4c10
JP		 2740 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
2741 le32_to_cpu(raw_super->extension_count),
2742 raw_super->hot_ext_count,
2743 F2FS_MAX_EXTENSION);
38fb6d0e 2744 return -EFSCORRUPTED;
0cfe75c5
JK		 2745 }
2746
2747 if (le32_to_cpu(raw_super->cp_payload) >
2748 (blocks_per_seg - F2FS_CP_PACKS)) {
dcbb4c10
JP		 2749 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
2750 le32_to_cpu(raw_super->cp_payload),
2751 blocks_per_seg - F2FS_CP_PACKS);
38fb6d0e 2752 return -EFSCORRUPTED;
0cfe75c5
JK		 2753 }
2754
9a59b62f
CY		 2755 /* check reserved ino info */
2756 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2757 le32_to_cpu(raw_super->meta_ino) != 2 ||
2758 le32_to_cpu(raw_super->root_ino) != 3) {
dcbb4c10
JP		 2759 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2760 le32_to_cpu(raw_super->node_ino),
2761 le32_to_cpu(raw_super->meta_ino),
2762 le32_to_cpu(raw_super->root_ino));
38fb6d0e 2763 return -EFSCORRUPTED;
9a59b62f
CY		 2764 }
2765
2766 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2767 if (sanity_check_area_boundary(sbi, bh))
38fb6d0e 2768 return -EFSCORRUPTED;
9a59b62f 2769
aff063e2
JK		 2770 return 0;
2771}
2772
4d57b86d 2773int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2774{
2775 unsigned int total, fsmeta;
577e3495
JK		 2776 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2777 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2778 unsigned int ovp_segments, reserved_segments;
15d3042a 2779 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2780 unsigned int sit_segs, nat_segs;
2781 unsigned int sit_bitmap_size, nat_bitmap_size;
2782 unsigned int log_blocks_per_seg;
9dc956b2 2783 unsigned int segment_count_main;
e494c2f9 2784 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 2785 block_t user_block_count, valid_user_blocks;
2786 block_t avail_node_count, valid_node_count;
042be0f8 2787 int i, j;
aff063e2
JK		 2788
2789 total = le32_to_cpu(raw_super->segment_count);
2790 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2791 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2792 fsmeta += sit_segs;
2793 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2794 fsmeta += nat_segs;
aff063e2
JK		 2795 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2796 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2797
6bacf52f 2798 if (unlikely(fsmeta >= total))
aff063e2 2799 return 1;
577e3495 2800
2040fce8
JK		 2801 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2802 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2803
2804 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2805 ovp_segments == 0 || reserved_segments == 0)) {
dcbb4c10 2806 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2040fce8
JK		 2807 return 1;
2808 }
2809
9dc956b2
CY		 2810 user_block_count = le64_to_cpu(ckpt->user_block_count);
2811 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2812 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2813 if (!user_block_count || user_block_count >=
2814 segment_count_main << log_blocks_per_seg) {
dcbb4c10
JP		 2815 f2fs_err(sbi, "Wrong user_block_count: %u",
2816 user_block_count);
9dc956b2
CY		 2817 return 1;
2818 }
2819
7b63f72f
CY		 2820 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2821 if (valid_user_blocks > user_block_count) {
dcbb4c10
JP		 2822 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
2823 valid_user_blocks, user_block_count);
7b63f72f
CY		 2824 return 1;
2825 }
2826
2827 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
27cae0bc 2828 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
7b63f72f 2829 if (valid_node_count > avail_node_count) {
dcbb4c10
JP		 2830 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
2831 valid_node_count, avail_node_count);
7b63f72f
CY		 2832 return 1;
2833 }
2834
15d3042a
JQ		 2835 main_segs = le32_to_cpu(raw_super->segment_count_main);
2836 blocks_per_seg = sbi->blocks_per_seg;
2837
2838 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2839 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2840 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2841 return 1;
042be0f8
CY		 2842 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2843 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2844 le32_to_cpu(ckpt->cur_node_segno[j])) {
dcbb4c10
JP		 2845 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
2846 i, j,
2847 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2848 return 1;
2849 }
2850 }
15d3042a
JQ		 2851 }
2852 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2853 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2854 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2855 return 1;
042be0f8
CY		 2856 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2857 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2858 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2859 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
2860 i, j,
2861 le32_to_cpu(ckpt->cur_data_segno[i]));
042be0f8
CY		 2862 return 1;
2863 }
2864 }
2865 }
2866 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1166c1f2 2867 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
042be0f8
CY		 2868 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2869 le32_to_cpu(ckpt->cur_data_segno[j])) {
1166c1f2 2870 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
dcbb4c10
JP		 2871 i, j,
2872 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2873 return 1;
2874 }
2875 }
15d3042a
JQ		 2876 }
2877
c77ec61c
CY		 2878 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2879 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2880
2881 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2882 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
dcbb4c10
JP		 2883 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
2884 sit_bitmap_size, nat_bitmap_size);
c77ec61c
CY		 2885 return 1;
2886 }
e494c2f9
CY		 2887
2888 cp_pack_start_sum = __start_sum_addr(sbi);
2889 cp_payload = __cp_payload(sbi);
2890 if (cp_pack_start_sum < cp_payload + 1 ||
2891 cp_pack_start_sum > blocks_per_seg - 1 -
2892 NR_CURSEG_TYPE) {
dcbb4c10
JP		 2893 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
2894 cp_pack_start_sum);
e494c2f9
CY		 2895 return 1;
2896 }
c77ec61c 2897
5dae2d39
CY		 2898 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
2899 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2d008835
CY		 2900 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
2901 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
2902 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
dcbb4c10 2903 le32_to_cpu(ckpt->checksum_offset));
5dae2d39
CY		 2904 return 1;
2905 }
2906
1e968fdf 2907 if (unlikely(f2fs_cp_error(sbi))) {
dcbb4c10 2908 f2fs_err(sbi, "A bug case: need to run fsck");
577e3495
JK		 2909 return 1;
2910 }
aff063e2
JK		 2911 return 0;
2912}
2913
2914static void init_sb_info(struct f2fs_sb_info *sbi)
2915{
2916 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 2917 int i;
aff063e2
JK		 2918
2919 sbi->log_sectors_per_block =
2920 le32_to_cpu(raw_super->log_sectors_per_block);
2921 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2922 sbi->blocksize = 1 << sbi->log_blocksize;
2923 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2924 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2925 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2926 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2927 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2928 sbi->total_node_count =
2929 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2930 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2931 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2932 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2933 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2934 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 2935 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2936 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 2937 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 2938 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 2939
ab9fa662 2940 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2941 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2942 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2943 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2944 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2945 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 2946 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2947 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 2948 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2949
35782b23
JK		 2950 for (i = 0; i < NR_COUNT_TYPE; i++)
2951 atomic_set(&sbi->nr_pages[i], 0);
2952
c29fd0c0
CY		 2953 for (i = 0; i < META; i++)
2954 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2955
2658e50d
JK		 2956 INIT_LIST_HEAD(&sbi->s_list);
2957 mutex_init(&sbi->umount_mutex);
107a805d 2958 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2959 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2960
2961 sbi->dirty_device = 0;
2962 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2963
846ae671 2964 init_rwsem(&sbi->sb_lock);
f5a53edc 2965 init_rwsem(&sbi->pin_sem);
aff063e2
JK		 2966}
2967
523be8a6
JK		 2968static int init_percpu_info(struct f2fs_sb_info *sbi)
2969{
35782b23 2970 int err;
41382ec4 2971
513c5f37
JK		 2972 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2973 if (err)
2974 return err;
2975
4a70e255 2976 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2977 GFP_KERNEL);
4a70e255
CY		 2978 if (err)
2979 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2980
2981 return err;
523be8a6
JK		 2982}
2983
178053e2 2984#ifdef CONFIG_BLK_DEV_ZONED
d4100351
CH		 2985static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
2986 void *data)
2987{
2988 struct f2fs_dev_info *dev = data;
2989
2990 if (zone->type != BLK_ZONE_TYPE_CONVENTIONAL)
2991 set_bit(idx, dev->blkz_seq);
2992 return 0;
2993}
2994
3c62be17 2995static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2996{
3c62be17 2997 struct block_device *bdev = FDEV(devi).bdev;
178053e2 2998 sector_t nr_sectors = bdev->bd_part->nr_sects;
d4100351 2999 int ret;
178053e2 3000
7beb01f7 3001 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 3002 return 0;
3003
3c62be17 3004 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 3005 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 3006 return -EINVAL;
f99e8648 3007 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 3008 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3009 __ilog2_u32(sbi->blocks_per_blkz))
3010 return -EINVAL;
178053e2 3011 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 3012 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3013 sbi->log_blocks_per_blkz;
f99e8648 3014 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 3015 FDEV(devi).nr_blkz++;
178053e2 3016
95175daf
DLM		 3017 FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
3018 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3019 * sizeof(unsigned long),
3020 GFP_KERNEL);
3021 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 3022 return -ENOMEM;
3023
178053e2 3024 /* Get block zones type */
d4100351
CH		 3025 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3026 &FDEV(devi));
3027 if (ret < 0)
3028 return ret;
178053e2 3029
d4100351 3030 return 0;
178053e2
DLM		 3031}
3032#endif
3033
9076a75f
GZ		 3034/*
3035 * Read f2fs raw super block.
2b39e907
SL		 3036 * Because we have two copies of super block, so read both of them
3037 * to get the first valid one. If any one of them is broken, we pass
3038 * them recovery flag back to the caller.
9076a75f 3039 */
df728b0f 3040static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 3041 struct f2fs_super_block **raw_super,
e8240f65 3042 int *valid_super_block, int *recovery)
14d7e9de 3043{
df728b0f 3044 struct super_block *sb = sbi->sb;
2b39e907 3045 int block;
e8240f65 3046 struct buffer_head *bh;
fd694733 3047 struct f2fs_super_block *super;
da554e48 3048 int err = 0;
14d7e9de 3049
b39f0de2
YH		 3050 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3051 if (!super)
3052 return -ENOMEM;
2b39e907
SL		 3053
3054 for (block = 0; block < 2; block++) {
3055 bh = sb_bread(sb, block);
3056 if (!bh) {
dcbb4c10
JP		 3057 f2fs_err(sbi, "Unable to read %dth superblock",
3058 block + 1);
2b39e907 3059 err = -EIO;
ed352042 3060 *recovery = 1;
2b39e907
SL		 3061 continue;
3062 }
14d7e9de 3063
2b39e907 3064 /* sanity checking of raw super */
38fb6d0e
IZ		 3065 err = sanity_check_raw_super(sbi, bh);
3066 if (err) {
dcbb4c10
JP		 3067 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3068 block + 1);
2b39e907 3069 brelse(bh);
ed352042 3070 *recovery = 1;
2b39e907
SL		 3071 continue;
3072 }
14d7e9de 3073
2b39e907 3074 if (!*raw_super) {
fd694733
JK		 3075 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3076 sizeof(*super));
2b39e907
SL		 3077 *valid_super_block = block;
3078 *raw_super = super;
3079 }
3080 brelse(bh);
da554e48 3081 }
3082
da554e48 3083 /* No valid superblock */
2b39e907 3084 if (!*raw_super)
5222595d 3085 kvfree(super);
2b39e907
SL		 3086 else
3087 err = 0;
da554e48 3088
2b39e907 3089 return err;
14d7e9de 3090}
3091
fd694733 3092int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 3093{
5d909cdb 3094 struct buffer_head *bh;
d440c52d 3095 __u32 crc = 0;
26d815ad
JK		 3096 int err;
3097
df728b0f
JK		 3098 if ((recover && f2fs_readonly(sbi->sb)) ||
3099 bdev_read_only(sbi->sb->s_bdev)) {
3100 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 3101 return -EROFS;
df728b0f 3102 }
f2353d7b 3103
d440c52d 3104 /* we should update superblock crc here */
7beb01f7 3105 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 3106 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3107 offsetof(struct f2fs_super_block, crc));
3108 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3109 }
3110
fd694733 3111 /* write back-up superblock first */
0964fc1a 3112 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 3113 if (!bh)
3114 return -EIO;
fd694733 3115 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 3116 brelse(bh);
c5bda1c8
CY		 3117
3118 /* if we are in recovery path, skip writing valid superblock */
3119 if (recover || err)
5d909cdb 3120 return err;
26d815ad
JK		 3121
3122 /* write current valid superblock */
0964fc1a 3123 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 3124 if (!bh)
3125 return -EIO;
3126 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3127 brelse(bh);
3128 return err;
26d815ad
JK		 3129}
3130
3c62be17
JK		 3131static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3132{
3133 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 3134 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 3135 int i;
3136
7bb3a371
MS		 3137 /* Initialize single device information */
3138 if (!RDEV(0).path[0]) {
3139 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 3140 return 0;
7bb3a371
MS		 3141 max_devices = 1;
3142 }
3c62be17 3143
7bb3a371
MS		 3144 /*
3145 * Initialize multiple devices information, or single
3146 * zoned block device information.
3147 */
026f0507
KC		 3148 sbi->devs = f2fs_kzalloc(sbi,
3149 array_size(max_devices,
3150 sizeof(struct f2fs_dev_info)),
3151 GFP_KERNEL);
7bb3a371
MS		 3152 if (!sbi->devs)
3153 return -ENOMEM;
3c62be17 3154
7bb3a371 3155 for (i = 0; i < max_devices; i++) {
3c62be17 3156
7bb3a371
MS		 3157 if (i > 0 && !RDEV(i).path[0])
3158 break;
3159
3160 if (max_devices == 1) {
3161 /* Single zoned block device mount */
3162 FDEV(0).bdev =
3163 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 3164 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 3165 } else {
3166 /* Multi-device mount */
3167 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3168 FDEV(i).total_segments =
3169 le32_to_cpu(RDEV(i).total_segments);
3170 if (i == 0) {
3171 FDEV(i).start_blk = 0;
3172 FDEV(i).end_blk = FDEV(i).start_blk +
3173 (FDEV(i).total_segments <<
3174 sbi->log_blocks_per_seg) - 1 +
3175 le32_to_cpu(raw_super->segment0_blkaddr);
3176 } else {
3177 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3178 FDEV(i).end_blk = FDEV(i).start_blk +
3179 (FDEV(i).total_segments <<
3180 sbi->log_blocks_per_seg) - 1;
3181 }
3182 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 3183 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 3184 }
3c62be17
JK		 3185 if (IS_ERR(FDEV(i).bdev))
3186 return PTR_ERR(FDEV(i).bdev);
3187
3188 /* to release errored devices */
3189 sbi->s_ndevs = i + 1;
3190
3191#ifdef CONFIG_BLK_DEV_ZONED
3192 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3193 !f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3194 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3c62be17
JK		 3195 return -EINVAL;
3196 }
3197 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3198 if (init_blkz_info(sbi, i)) {
dcbb4c10 3199 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3c62be17
JK		 3200 return -EINVAL;
3201 }
7bb3a371
MS		 3202 if (max_devices == 1)
3203 break;
dcbb4c10
JP		 3204 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3205 i, FDEV(i).path,
3206 FDEV(i).total_segments,
3207 FDEV(i).start_blk, FDEV(i).end_blk,
3208 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3209 "Host-aware" : "Host-managed");
3c62be17
JK		 3210 continue;
3211 }
3212#endif
dcbb4c10
JP		 3213 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3214 i, FDEV(i).path,
3215 FDEV(i).total_segments,
3216 FDEV(i).start_blk, FDEV(i).end_blk);
3217 }
3218 f2fs_info(sbi,
3219 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3220 return 0;
3221}
3222
5aba5430
DR		 3223static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3224{
3225#ifdef CONFIG_UNICODE
3226 if (f2fs_sb_has_casefold(sbi) && !sbi->s_encoding) {
3227 const struct f2fs_sb_encodings *encoding_info;
3228 struct unicode_map *encoding;
3229 __u16 encoding_flags;
3230
3231 if (f2fs_sb_has_encrypt(sbi)) {
3232 f2fs_err(sbi,
3233 "Can't mount with encoding and encryption");
3234 return -EINVAL;
3235 }
3236
3237 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3238 &encoding_flags)) {
3239 f2fs_err(sbi,
3240 "Encoding requested by superblock is unknown");
3241 return -EINVAL;
3242 }
3243
3244 encoding = utf8_load(encoding_info->version);
3245 if (IS_ERR(encoding)) {
3246 f2fs_err(sbi,
3247 "can't mount with superblock charset: %s-%s "
3248 "not supported by the kernel. flags: 0x%x.",
3249 encoding_info->name, encoding_info->version,
3250 encoding_flags);
3251 return PTR_ERR(encoding);
3252 }
3253 f2fs_info(sbi, "Using encoding defined by superblock: "
3254 "%s-%s with flags 0x%hx", encoding_info->name,
3255 encoding_info->version?:"\b", encoding_flags);
3256
3257 sbi->s_encoding = encoding;
3258 sbi->s_encoding_flags = encoding_flags;
2c2eb7a3 3259 sbi->sb->s_d_op = &f2fs_dentry_ops;
5aba5430
DR		 3260 }
3261#else
3262 if (f2fs_sb_has_casefold(sbi)) {
3263 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3264 return -EINVAL;
3265 }
3266#endif
3267 return 0;
3268}
3269
84b89e5d
JK		 3270static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3271{
3272 struct f2fs_sm_info *sm_i = SM_I(sbi);
3273
3274 /* adjust parameters according to the volume size */
3275 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3276 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3277 sm_i->dcc_info->discard_granularity = 1;
3278 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3279 }
4cac90d5
CY		 3280
3281 sbi->readdir_ra = 1;
84b89e5d
JK		 3282}
3283
aff063e2
JK		 3284static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3285{
3286 struct f2fs_sb_info *sbi;
da554e48 3287 struct f2fs_super_block *raw_super;
aff063e2 3288 struct inode *root;
99e3e858 3289 int err;
aa2c8c43 3290 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3291 char *options = NULL;
e8240f65 3292 int recovery, i, valid_super_block;
8f1dbbbb 3293 struct curseg_info *seg_i;
aa2c8c43 3294 int retry_cnt = 1;
aff063e2 3295
ed2e621a 3296try_onemore:
da554e48 3297 err = -EINVAL;
3298 raw_super = NULL;
e8240f65 3299 valid_super_block = -1;
da554e48 3300 recovery = 0;
3301
aff063e2
JK		 3302 /* allocate memory for f2fs-specific super block info */
3303 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3304 if (!sbi)
3305 return -ENOMEM;
3306
df728b0f
JK		 3307 sbi->sb = sb;
3308
43b6573b
KM		 3309 /* Load the checksum driver */
3310 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3311 if (IS_ERR(sbi->s_chksum_driver)) {
dcbb4c10 3312 f2fs_err(sbi, "Cannot load crc32 driver.");
43b6573b
KM		 3313 err = PTR_ERR(sbi->s_chksum_driver);
3314 sbi->s_chksum_driver = NULL;
3315 goto free_sbi;
3316 }
3317
ff9234ad 3318 /* set a block size */
6bacf52f 3319 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
dcbb4c10 3320 f2fs_err(sbi, "unable to set blocksize");
aff063e2 3321 goto free_sbi;
a07ef784 3322 }
aff063e2 3323
df728b0f 3324 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3325 &recovery);
9076a75f
GZ		 3326 if (err)
3327 goto free_sbi;
3328
5fb08372 3329 sb->s_fs_info = sbi;
52763a4b
JK		 3330 sbi->raw_super = raw_super;
3331
704956ec 3332 /* precompute checksum seed for metadata */
7beb01f7 3333 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3334 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3335 sizeof(raw_super->uuid));
3336
d1b959c8
DLM		 3337 /*
3338 * The BLKZONED feature indicates that the drive was formatted with
3339 * zone alignment optimization. This is optional for host-aware
3340 * devices, but mandatory for host-managed zoned block devices.
3341 */
3342#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3343 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3344 f2fs_err(sbi, "Zoned block device support is not enabled");
1727f317 3345 err = -EOPNOTSUPP;
d1b959c8
DLM		 3346 goto free_sb_buf;
3347 }
d1b959c8 3348#endif
498c5e9f 3349 default_options(sbi);
aff063e2 3350 /* parse mount options */
dabc4a5c
JK		 3351 options = kstrdup((const char *)data, GFP_KERNEL);
3352 if (data && !options) {
3353 err = -ENOMEM;
aff063e2 3354 goto free_sb_buf;
dabc4a5c
JK		 3355 }
3356
3357 err = parse_options(sb, options);
3358 if (err)
3359 goto free_options;
aff063e2 3360
e0afc4d6
CY		 3361 sbi->max_file_blocks = max_file_blocks();
3362 sb->s_maxbytes = sbi->max_file_blocks <<
3363 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3364 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3365
5aba5430
DR		 3366 err = f2fs_setup_casefold(sbi);
3367 if (err)
3368 goto free_options;
3369
0abd675e
CY		 3370#ifdef CONFIG_QUOTA
3371 sb->dq_op = &f2fs_quota_operations;
bc88ac96 3372 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3373 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3374
7beb01f7 3375 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3376 for (i = 0; i < MAXQUOTAS; i++) {
3377 if (f2fs_qf_ino(sbi->sb, i))
3378 sbi->nquota_files++;
3379 }
3380 }
0abd675e
CY		 3381#endif
3382
aff063e2 3383 sb->s_op = &f2fs_sops;
643fa961 3384#ifdef CONFIG_FS_ENCRYPTION
0b81d077 3385 sb->s_cop = &f2fs_cryptops;
95ae251f
EB		 3386#endif
3387#ifdef CONFIG_FS_VERITY
3388 sb->s_vop = &f2fs_verityops;
ffcc4182 3389#endif
aff063e2
JK		 3390 sb->s_xattr = f2fs_xattr_handlers;
3391 sb->s_export_op = &f2fs_export_ops;
3392 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3393 sb->s_time_gran = 1;
1751e8a6
LT		 3394 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3395 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3396 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3397 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3398
3399 /* init f2fs-specific super block info */
e8240f65 3400 sbi->valid_super_block = valid_super_block;
aff063e2 3401 mutex_init(&sbi->gc_mutex);
853137ce 3402 mutex_init(&sbi->writepages);
aff063e2 3403 mutex_init(&sbi->cp_mutex);
04f0b2ea 3404 mutex_init(&sbi->resize_mutex);
b3582c68 3405 init_rwsem(&sbi->node_write);
59c9081b 3406 init_rwsem(&sbi->node_change);
315df839
JK		 3407
3408 /* disallow all the data/node/meta page writes */
3409 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3410 spin_lock_init(&sbi->stat_lock);
971767ca 3411
b0af6d49
CY		 3412 /* init iostat info */
3413 spin_lock_init(&sbi->iostat_lock);
3414 sbi->iostat_enable = false;
3415
458e6197 3416 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3417 int n = (i == META) ? 1: NR_TEMP_TYPE;
3418 int j;
3419
c8606593
KC		 3420 sbi->write_io[i] =
3421 f2fs_kmalloc(sbi,
3422 array_size(n,
3423 sizeof(struct f2fs_bio_info)),
3424 GFP_KERNEL);
b63def91
CJ		 3425 if (!sbi->write_io[i]) {
3426 err = -ENOMEM;
0b2103e8 3427 goto free_bio_info;
b63def91 3428 }
a912b54d
JK		 3429
3430 for (j = HOT; j < n; j++) {
3431 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3432 sbi->write_io[i][j].sbi = sbi;
3433 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3434 spin_lock_init(&sbi->write_io[i][j].io_lock);
3435 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
0b20fcec
CY		 3436 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
3437 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
a912b54d 3438 }
458e6197 3439 }
971767ca 3440
b873b798 3441 init_rwsem(&sbi->cp_rwsem);
db6ec53b 3442 init_rwsem(&sbi->quota_sem);
fb51b5ef 3443 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3444 init_sb_info(sbi);
3445
523be8a6
JK		 3446 err = init_percpu_info(sbi);
3447 if (err)
d7997e63 3448 goto free_bio_info;
523be8a6 3449
c72db71e 3450 if (F2FS_IO_ALIGNED(sbi)) {
0a595eba 3451 sbi->write_io_dummy =
a3ebfe4f 3452 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3453 if (!sbi->write_io_dummy) {
3454 err = -ENOMEM;
d7997e63 3455 goto free_percpu;
1727f317 3456 }
0a595eba
JK		 3457 }
3458
aff063e2
JK		 3459 /* get an inode for meta space */
3460 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3461 if (IS_ERR(sbi->meta_inode)) {
dcbb4c10 3462 f2fs_err(sbi, "Failed to read F2FS meta data inode");
aff063e2 3463 err = PTR_ERR(sbi->meta_inode);
0a595eba 3464 goto free_io_dummy;
aff063e2
JK		 3465 }
3466
4d57b86d 3467 err = f2fs_get_valid_checkpoint(sbi);
a07ef784 3468 if (err) {
dcbb4c10 3469 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
aff063e2 3470 goto free_meta_inode;
a07ef784 3471 }
aff063e2 3472
af033b2a
CY		 3473 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3474 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3475 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3476 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3477 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3478 }
af033b2a 3479
04f0b2ea
QS		 3480 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3481 set_sbi_flag(sbi, SBI_NEED_FSCK);
3482
3c62be17
JK		 3483 /* Initialize device list */
3484 err = f2fs_scan_devices(sbi);
3485 if (err) {
dcbb4c10 3486 f2fs_err(sbi, "Failed to find devices");
3c62be17
JK		 3487 goto free_devices;
3488 }
3489
4c8ff709
CY		 3490 err = f2fs_init_post_read_wq(sbi);
3491 if (err) {
3492 f2fs_err(sbi, "Failed to initialize post read workqueue");
3493 goto free_devices;
3494 }
3495
aff063e2
JK		 3496 sbi->total_valid_node_count =
3497 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3498 percpu_counter_set(&sbi->total_valid_inode_count,
3499 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3500 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3501 sbi->total_valid_block_count =
3502 le64_to_cpu(sbi->ckpt->valid_block_count);
3503 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3504 sbi->reserved_blocks = 0;
80d42145 3505 sbi->current_reserved_blocks = 0;
7e65be49 3506 limit_reserve_root(sbi);
41382ec4 3507
c227f912
CY		 3508 for (i = 0; i < NR_INODE_TYPE; i++) {
3509 INIT_LIST_HEAD(&sbi->inode_list[i]);
3510 spin_lock_init(&sbi->inode_lock[i]);
3511 }
040d2bb3 3512 mutex_init(&sbi->flush_lock);
aff063e2 3513
4d57b86d 3514 f2fs_init_extent_cache_info(sbi);
1dcc336b 3515
4d57b86d 3516 f2fs_init_ino_entry_info(sbi);
aff063e2 3517
50fa53ec
CY		 3518 f2fs_init_fsync_node_info(sbi);
3519
aff063e2 3520 /* setup f2fs internal modules */
4d57b86d 3521 err = f2fs_build_segment_manager(sbi);
a07ef784 3522 if (err) {
dcbb4c10
JP		 3523 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3524 err);
aff063e2 3525 goto free_sm;
a07ef784 3526 }
4d57b86d 3527 err = f2fs_build_node_manager(sbi);
a07ef784 3528 if (err) {
dcbb4c10
JP		 3529 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3530 err);
aff063e2 3531 goto free_nm;
a07ef784 3532 }
aff063e2 3533
8f1dbbbb
SL		 3534 /* For write statistics */
3535 if (sb->s_bdev->bd_part)
3536 sbi->sectors_written_start =
dbae2c55
MC		 3537 (u64)part_stat_read(sb->s_bdev->bd_part,
3538 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3539
3540 /* Read accumulated write IO statistics if exists */
3541 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3542 if (__exist_node_summaries(sbi))
3543 sbi->kbytes_written =
b2dde6fc 3544 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3545
4d57b86d 3546 f2fs_build_gc_manager(sbi);
aff063e2 3547
60aa4d55
ST		 3548 err = f2fs_build_stats(sbi);
3549 if (err)
3550 goto free_nm;
3551
aff063e2
JK		 3552 /* get an inode for node space */
3553 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3554 if (IS_ERR(sbi->node_inode)) {
dcbb4c10 3555 f2fs_err(sbi, "Failed to read node inode");
aff063e2 3556 err = PTR_ERR(sbi->node_inode);
60aa4d55 3557 goto free_stats;
aff063e2
JK		 3558 }
3559
aff063e2
JK		 3560 /* read root inode and dentry */
3561 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3562 if (IS_ERR(root)) {
dcbb4c10 3563 f2fs_err(sbi, "Failed to read root inode");
aff063e2 3564 err = PTR_ERR(root);
60aa4d55 3565 goto free_node_inode;
aff063e2 3566 }
bcbfbd60
CY		 3567 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3568 !root->i_size || !root->i_nlink) {
9d847950 3569 iput(root);
8f99a946 3570 err = -EINVAL;
60aa4d55 3571 goto free_node_inode;
8f99a946 3572 }
aff063e2
JK		 3573
3574 sb->s_root = d_make_root(root); /* allocate root dentry */
3575 if (!sb->s_root) {
3576 err = -ENOMEM;
025cdb16 3577 goto free_node_inode;
aff063e2
JK		 3578 }
3579
dc6b2055 3580 err = f2fs_register_sysfs(sbi);
b59d0bae 3581 if (err)
a398101a 3582 goto free_root_inode;
b59d0bae 3583
ea676733 3584#ifdef CONFIG_QUOTA
76cf05d7 3585 /* Enable quota usage during mount */
7beb01f7 3586 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3587 err = f2fs_enable_quotas(sb);
730746ce 3588 if (err)
dcbb4c10 3589 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
ea676733
JK		 3590 }
3591#endif
4b2414d0 3592 /* if there are nt orphan nodes free them */
4d57b86d 3593 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3594 if (err)
ea676733 3595 goto free_meta;
4b2414d0 3596
4354994f 3597 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3598 goto reset_checkpoint;
4354994f 3599
6437d1b0
JK		 3600 /* recover fsynced data */
3601 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
081d78c2
JK		 3602 /*
3603 * mount should be failed, when device has readonly mode, and
3604 * previous checkpoint was not done by clean system shutdown.
3605 */
b61af314
CY		 3606 if (f2fs_hw_is_readonly(sbi)) {
3607 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3608 err = -EROFS;
dcbb4c10 3609 f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
b61af314
CY		 3610 goto free_meta;
3611 }
dcbb4c10 3612 f2fs_info(sbi, "write access unavailable, skipping recovery");
b61af314 3613 goto reset_checkpoint;
081d78c2 3614 }
2adc3505
CY		 3615
3616 if (need_fsck)
3617 set_sbi_flag(sbi, SBI_NEED_FSCK);
3618
aa2c8c43
CY		 3619 if (skip_recovery)
3620 goto reset_checkpoint;
a468f0ef 3621
4d57b86d 3622 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3623 if (err < 0) {
aa2c8c43
CY		 3624 if (err != -ENOMEM)
3625 skip_recovery = true;
2adc3505 3626 need_fsck = true;
dcbb4c10
JP		 3627 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3628 err);
4b2414d0 3629 goto free_meta;
ed2e621a 3630 }
6781eabb 3631 } else {
4d57b86d 3632 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3633
3634 if (!f2fs_readonly(sb) && err > 0) {
3635 err = -EINVAL;
dcbb4c10 3636 f2fs_err(sbi, "Need to recover fsync data");
ea676733 3637 goto free_meta;
6781eabb 3638 }
6437d1b0 3639 }
d508c94e
SK		 3640
3641 /*
3642 * If the f2fs is not readonly and fsync data recovery succeeds,
3643 * check zoned block devices' write pointer consistency.
3644 */
3645 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
3646 err = f2fs_check_write_pointer(sbi);
3647 if (err)
3648 goto free_meta;
3649 }
3650
aa2c8c43 3651reset_checkpoint:
4d57b86d 3652 /* f2fs_recover_fsync_data() cleared this already */
315df839 3653 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3654
4354994f
DR		 3655 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3656 err = f2fs_disable_checkpoint(sbi);
3657 if (err)
812a9597 3658 goto sync_free_meta;
4354994f
DR		 3659 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3660 f2fs_enable_checkpoint(sbi);
3661 }
3662
6437d1b0
JK		 3663 /*
3664 * If filesystem is not mounted as read-only then
3665 * do start the gc_thread.
3666 */
6c029932 3667 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
6437d1b0 3668 /* After POR, we can run background GC thread.*/
4d57b86d 3669 err = f2fs_start_gc_thread(sbi);
6437d1b0 3670 if (err)
812a9597 3671 goto sync_free_meta;
6437d1b0 3672 }
5222595d 3673 kvfree(options);
da554e48 3674
3675 /* recover broken superblock */
f2353d7b 3676 if (recovery) {
41214b3c 3677 err = f2fs_commit_super(sbi, true);
dcbb4c10
JP		 3678 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
3679 sbi->valid_super_block ? 1 : 2, err);
da554e48 3680 }
3681
bae01eda
CY		 3682 f2fs_join_shrinker(sbi);
3683
84b89e5d
JK		 3684 f2fs_tuning_parameters(sbi);
3685
dcbb4c10
JP		 3686 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
3687 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3688 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3689 f2fs_update_time(sbi, REQ_TIME);
db610a64 3690 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3691 return 0;
6437d1b0 3692
812a9597
JK		 3693sync_free_meta:
3694 /* safe to flush all the data */
3695 sync_filesystem(sbi->sb);
aa2c8c43 3696 retry_cnt = 0;
812a9597 3697
4b2414d0 3698free_meta:
ea676733 3699#ifdef CONFIG_QUOTA
26b5a079 3700 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3701 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3702 f2fs_quota_off_umount(sbi->sb);
3703#endif
4b2414d0 3704 /*
4d57b86d 3705 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3706 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3707 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3708 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3709 */
3710 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3711 /* evict some inodes being cached by GC */
3712 evict_inodes(sb);
dc6b2055 3713 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3714free_root_inode:
3715 dput(sb->s_root);
3716 sb->s_root = NULL;
3717free_node_inode:
4d57b86d 3718 f2fs_release_ino_entry(sbi, true);
bae01eda 3719 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3720 iput(sbi->node_inode);
7c77bf7d 3721 sbi->node_inode = NULL;
60aa4d55
ST		 3722free_stats:
3723 f2fs_destroy_stats(sbi);
aff063e2 3724free_nm:
4d57b86d 3725 f2fs_destroy_node_manager(sbi);
aff063e2 3726free_sm:
4d57b86d 3727 f2fs_destroy_segment_manager(sbi);
4c8ff709 3728 f2fs_destroy_post_read_wq(sbi);
3c62be17
JK		 3729free_devices:
3730 destroy_device_list(sbi);
5222595d 3731 kvfree(sbi->ckpt);
aff063e2
JK		 3732free_meta_inode:
3733 make_bad_inode(sbi->meta_inode);
3734 iput(sbi->meta_inode);
7c77bf7d 3735 sbi->meta_inode = NULL;
0a595eba
JK		 3736free_io_dummy:
3737 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3738free_percpu:
3739 destroy_percpu_info(sbi);
3740free_bio_info:
a912b54d 3741 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3742 kvfree(sbi->write_io[i]);
5aba5430
DR		 3743
3744#ifdef CONFIG_UNICODE
3745 utf8_unload(sbi->s_encoding);
3746#endif
d7997e63 3747free_options:
4b2414d0
CY		 3748#ifdef CONFIG_QUOTA
3749 for (i = 0; i < MAXQUOTAS; i++)
5222595d 3750 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3751#endif
5222595d 3752 kvfree(options);
aff063e2 3753free_sb_buf:
5222595d 3754 kvfree(raw_super);
aff063e2 3755free_sbi:
43b6573b
KM		 3756 if (sbi->s_chksum_driver)
3757 crypto_free_shash(sbi->s_chksum_driver);
5222595d 3758 kvfree(sbi);
ed2e621a
JK		 3759
3760 /* give only one another chance */
aa2c8c43
CY		 3761 if (retry_cnt > 0 && skip_recovery) {
3762 retry_cnt--;
ed2e621a
JK		 3763 shrink_dcache_sb(sb);
3764 goto try_onemore;
3765 }
aff063e2
JK		 3766 return err;
3767}
3768
3769static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3770 const char *dev_name, void *data)
3771{
3772 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3773}
3774
30a5537f
JK		 3775static void kill_f2fs_super(struct super_block *sb)
3776{
cce13252 3777 if (sb->s_root) {
1cb50f87
JK		 3778 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3779
3780 set_sbi_flag(sbi, SBI_IS_CLOSE);
3781 f2fs_stop_gc_thread(sbi);
3782 f2fs_stop_discard_thread(sbi);
3783
3784 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3785 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3786 struct cp_control cpc = {
3787 .reason = CP_UMOUNT,
3788 };
3789 f2fs_write_checkpoint(sbi, &cpc);
3790 }
1378752b
CY		 3791
3792 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3793 sb->s_flags &= ~SB_RDONLY;
cce13252 3794 }
30a5537f
JK		 3795 kill_block_super(sb);
3796}
3797
aff063e2
JK		 3798static struct file_system_type f2fs_fs_type = {
3799 .owner = THIS_MODULE,
3800 .name = "f2fs",
3801 .mount = f2fs_mount,
30a5537f 3802 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3803 .fs_flags = FS_REQUIRES_DEV,
3804};
7f78e035 3805MODULE_ALIAS_FS("f2fs");
aff063e2 3806
6e6093a8 3807static int __init init_inodecache(void)
aff063e2 3808{
5d097056
VD		 3809 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3810 sizeof(struct f2fs_inode_info), 0,
3811 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3812 if (!f2fs_inode_cachep)
aff063e2
JK		 3813 return -ENOMEM;
3814 return 0;
3815}
3816
3817static void destroy_inodecache(void)
3818{
3819 /*
3820 * Make sure all delayed rcu free inodes are flushed before we
3821 * destroy cache.
3822 */
3823 rcu_barrier();
3824 kmem_cache_destroy(f2fs_inode_cachep);
3825}
3826
3827static int __init init_f2fs_fs(void)
3828{
3829 int err;
3830
4071e67c
AP		 3831 if (PAGE_SIZE != F2FS_BLKSIZE) {
3832 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3833 PAGE_SIZE, F2FS_BLKSIZE);
3834 return -EINVAL;
3835 }
3836
c0508650
JK		 3837 f2fs_build_trace_ios();
3838
aff063e2
JK		 3839 err = init_inodecache();
3840 if (err)
3841 goto fail;
4d57b86d 3842 err = f2fs_create_node_manager_caches();
aff063e2 3843 if (err)
9890ff3f 3844 goto free_inodecache;
4d57b86d 3845 err = f2fs_create_segment_manager_caches();
aff063e2 3846 if (err)
9890ff3f 3847 goto free_node_manager_caches;
4d57b86d 3848 err = f2fs_create_checkpoint_caches();
aff063e2 3849 if (err)
06292073 3850 goto free_segment_manager_caches;
4d57b86d 3851 err = f2fs_create_extent_cache();
1dcc336b
CY		 3852 if (err)
3853 goto free_checkpoint_caches;
dc6b2055 3854 err = f2fs_init_sysfs();
a398101a 3855 if (err)
1dcc336b 3856 goto free_extent_cache;
2658e50d 3857 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3858 if (err)
a398101a 3859 goto free_sysfs;
2658e50d
JK		 3860 err = register_filesystem(&f2fs_fs_type);
3861 if (err)
3862 goto free_shrinker;
21acc07d 3863 f2fs_create_root_stats();
6dbb1796
EB		 3864 err = f2fs_init_post_read_processing();
3865 if (err)
3866 goto free_root_stats;
0b20fcec
CY		 3867 err = f2fs_init_bio_entry_cache();
3868 if (err)
3869 goto free_post_read;
f543805f
CY		 3870 err = f2fs_init_bioset();
3871 if (err)
3872 goto free_bio_enrty_cache;
9890ff3f 3873 return 0;
f543805f
CY		 3874free_bio_enrty_cache:
3875 f2fs_destroy_bio_entry_cache();
0b20fcec
CY		 3876free_post_read:
3877 f2fs_destroy_post_read_processing();
6dbb1796
EB		 3878free_root_stats:
3879 f2fs_destroy_root_stats();
787c7b8c 3880 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3881free_shrinker:
3882 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3883free_sysfs:
dc6b2055 3884 f2fs_exit_sysfs();
1dcc336b 3885free_extent_cache:
4d57b86d 3886 f2fs_destroy_extent_cache();
9890ff3f 3887free_checkpoint_caches:
4d57b86d 3888 f2fs_destroy_checkpoint_caches();
7fd9e544 3889free_segment_manager_caches:
4d57b86d 3890 f2fs_destroy_segment_manager_caches();
9890ff3f 3891free_node_manager_caches:
4d57b86d 3892 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3893free_inodecache:
3894 destroy_inodecache();
aff063e2
JK		 3895fail:
3896 return err;
3897}
3898
3899static void __exit exit_f2fs_fs(void)
3900{
f543805f 3901 f2fs_destroy_bioset();
0b20fcec 3902 f2fs_destroy_bio_entry_cache();
6dbb1796 3903 f2fs_destroy_post_read_processing();
4589d25d 3904 f2fs_destroy_root_stats();
aff063e2 3905 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3906 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3907 f2fs_exit_sysfs();
4d57b86d
CY		 3908 f2fs_destroy_extent_cache();
3909 f2fs_destroy_checkpoint_caches();
3910 f2fs_destroy_segment_manager_caches();
3911 f2fs_destroy_node_manager_caches();
aff063e2 3912 destroy_inodecache();
351f4fba 3913 f2fs_destroy_trace_ios();
aff063e2
JK		 3914}
3915
3916module_init(init_f2fs_fs)
3917module_exit(exit_f2fs_fs)
3918
3919MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3920MODULE_DESCRIPTION("Flash Friendly File System");
3921MODULE_LICENSE("GPL");
b4b9d34c 3922
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