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f2fs: skip migration only when BG_GC is called
[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)) {
bbbc34fd 430 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
6aefd93b 431 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
bbbc34fd 432 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
6aefd93b 433 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
bbbc34fd 434 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
6aefd93b 435 } else {
5222595d 436 kvfree(name);
696c018c
NJ		 437 return -EINVAL;
438 }
5222595d 439 kvfree(name);
696c018c
NJ		 440 break;
441 case Opt_disable_roll_forward:
442 set_opt(sbi, DISABLE_ROLL_FORWARD);
443 break;
2d834bf9
JK		 444 case Opt_norecovery:
445 /* this option mounts f2fs with ro */
a9117eca 446 set_opt(sbi, NORECOVERY);
2d834bf9
JK		 447 if (!f2fs_readonly(sb))
448 return -EINVAL;
449 break;
696c018c 450 case Opt_discard:
7d20c8ab 451 set_opt(sbi, DISCARD);
696c018c 452 break;
64058be9 453 case Opt_nodiscard:
7beb01f7 454 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 455 f2fs_warn(sbi, "discard is required for zoned block devices");
96ba2dec
DLM		 456 return -EINVAL;
457 }
64058be9 458 clear_opt(sbi, DISCARD);
487df616 459 break;
696c018c
NJ		 460 case Opt_noheap:
461 set_opt(sbi, NOHEAP);
462 break;
7a20b8a6
JK		 463 case Opt_heap:
464 clear_opt(sbi, NOHEAP);
465 break;
696c018c 466#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 467 case Opt_user_xattr:
468 set_opt(sbi, XATTR_USER);
469 break;
696c018c
NJ		 470 case Opt_nouser_xattr:
471 clear_opt(sbi, XATTR_USER);
472 break;
444c580f
JK		 473 case Opt_inline_xattr:
474 set_opt(sbi, INLINE_XATTR);
475 break;
23cf7212
CY		 476 case Opt_noinline_xattr:
477 clear_opt(sbi, INLINE_XATTR);
478 break;
6afc662e
CY		 479 case Opt_inline_xattr_size:
480 if (args->from && match_int(args, &arg))
481 return -EINVAL;
482 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 483 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 484 break;
696c018c 485#else
4058c511 486 case Opt_user_xattr:
dcbb4c10 487 f2fs_info(sbi, "user_xattr options not supported");
4058c511 488 break;
696c018c 489 case Opt_nouser_xattr:
dcbb4c10 490 f2fs_info(sbi, "nouser_xattr options not supported");
696c018c 491 break;
444c580f 492 case Opt_inline_xattr:
dcbb4c10 493 f2fs_info(sbi, "inline_xattr options not supported");
444c580f 494 break;
23cf7212 495 case Opt_noinline_xattr:
dcbb4c10 496 f2fs_info(sbi, "noinline_xattr options not supported");
23cf7212 497 break;
696c018c
NJ		 498#endif
499#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 500 case Opt_acl:
501 set_opt(sbi, POSIX_ACL);
502 break;
696c018c
NJ		 503 case Opt_noacl:
504 clear_opt(sbi, POSIX_ACL);
505 break;
506#else
4058c511 507 case Opt_acl:
dcbb4c10 508 f2fs_info(sbi, "acl options not supported");
4058c511 509 break;
696c018c 510 case Opt_noacl:
dcbb4c10 511 f2fs_info(sbi, "noacl options not supported");
696c018c
NJ		 512 break;
513#endif
514 case Opt_active_logs:
515 if (args->from && match_int(args, &arg))
516 return -EINVAL;
517 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
518 return -EINVAL;
63189b78 519 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 520 break;
521 case Opt_disable_ext_identify:
522 set_opt(sbi, DISABLE_EXT_IDENTIFY);
523 break;
8274de77
HL		 524 case Opt_inline_data:
525 set_opt(sbi, INLINE_DATA);
526 break;
5efd3c6f
CY		 527 case Opt_inline_dentry:
528 set_opt(sbi, INLINE_DENTRY);
529 break;
97c1794a
CY		 530 case Opt_noinline_dentry:
531 clear_opt(sbi, INLINE_DENTRY);
532 break;
6b4afdd7
JK		 533 case Opt_flush_merge:
534 set_opt(sbi, FLUSH_MERGE);
535 break;
69e9e427
JK		 536 case Opt_noflush_merge:
537 clear_opt(sbi, FLUSH_MERGE);
538 break;
0f7b2abd
JK		 539 case Opt_nobarrier:
540 set_opt(sbi, NOBARRIER);
541 break;
d5053a34
JK		 542 case Opt_fastboot:
543 set_opt(sbi, FASTBOOT);
544 break;
89672159
CY		 545 case Opt_extent_cache:
546 set_opt(sbi, EXTENT_CACHE);
547 break;
7daaea25
JK		 548 case Opt_noextent_cache:
549 clear_opt(sbi, EXTENT_CACHE);
550 break;
75342797
WL		 551 case Opt_noinline_data:
552 clear_opt(sbi, INLINE_DATA);
553 break;
343f40f0
CY		 554 case Opt_data_flush:
555 set_opt(sbi, DATA_FLUSH);
556 break;
7e65be49
JK		 557 case Opt_reserve_root:
558 if (args->from && match_int(args, &arg))
559 return -EINVAL;
560 if (test_opt(sbi, RESERVE_ROOT)) {
dcbb4c10
JP		 561 f2fs_info(sbi, "Preserve previous reserve_root=%u",
562 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 563 } else {
63189b78 564 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 565 set_opt(sbi, RESERVE_ROOT);
566 }
567 break;
7c2e5963
JK		 568 case Opt_resuid:
569 if (args->from && match_int(args, &arg))
570 return -EINVAL;
571 uid = make_kuid(current_user_ns(), arg);
572 if (!uid_valid(uid)) {
dcbb4c10 573 f2fs_err(sbi, "Invalid uid value %d", arg);
7c2e5963
JK		 574 return -EINVAL;
575 }
63189b78 576 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 577 break;
578 case Opt_resgid:
579 if (args->from && match_int(args, &arg))
580 return -EINVAL;
581 gid = make_kgid(current_user_ns(), arg);
582 if (!gid_valid(gid)) {
dcbb4c10 583 f2fs_err(sbi, "Invalid gid value %d", arg);
7c2e5963
JK		 584 return -EINVAL;
585 }
63189b78 586 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 587 break;
36abef4e
JK		 588 case Opt_mode:
589 name = match_strdup(&args[0]);
590
591 if (!name)
592 return -ENOMEM;
593 if (strlen(name) == 8 &&
594 !strncmp(name, "adaptive", 8)) {
7beb01f7 595 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 596 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
5222595d 597 kvfree(name);
3adc57e9
DLM		 598 return -EINVAL;
599 }
b0332a0f 600 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
36abef4e
JK		 601 } else if (strlen(name) == 3 &&
602 !strncmp(name, "lfs", 3)) {
b0332a0f 603 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
36abef4e 604 } else {
5222595d 605 kvfree(name);
36abef4e
JK		 606 return -EINVAL;
607 }
5222595d 608 kvfree(name);
36abef4e 609 break;
ec91538d
JK		 610 case Opt_io_size_bits:
611 if (args->from && match_int(args, &arg))
612 return -EINVAL;
6d52e135 613 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
dcbb4c10
JP		 614 f2fs_warn(sbi, "Not support %d, larger than %d",
615 1 << arg, BIO_MAX_PAGES);
ec91538d
JK		 616 return -EINVAL;
617 }
63189b78 618 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 619 break;
4cb037ec 620#ifdef CONFIG_F2FS_FAULT_INJECTION
73faec4d
JK		 621 case Opt_fault_injection:
622 if (args->from && match_int(args, &arg))
623 return -EINVAL;
d494500a
CY		 624 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
625 set_opt(sbi, FAULT_INJECTION);
d494500a 626 break;
4cb037ec 627
d494500a
CY		 628 case Opt_fault_type:
629 if (args->from && match_int(args, &arg))
630 return -EINVAL;
d494500a 631 f2fs_build_fault_attr(sbi, 0, arg);
0cc0dec2 632 set_opt(sbi, FAULT_INJECTION);
4cb037ec 633 break;
73faec4d 634#else
4cb037ec 635 case Opt_fault_injection:
dcbb4c10 636 f2fs_info(sbi, "fault_injection options not supported");
73faec4d 637 break;
4cb037ec
CX		 638
639 case Opt_fault_type:
dcbb4c10 640 f2fs_info(sbi, "fault_type options not supported");
4cb037ec
CX		 641 break;
642#endif
6d94c74a 643 case Opt_lazytime:
1751e8a6 644 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 645 break;
646 case Opt_nolazytime:
1751e8a6 647 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 648 break;
0abd675e 649#ifdef CONFIG_QUOTA
4b2414d0 650 case Opt_quota:
0abd675e
CY		 651 case Opt_usrquota:
652 set_opt(sbi, USRQUOTA);
653 break;
654 case Opt_grpquota:
655 set_opt(sbi, GRPQUOTA);
656 break;
5c57132e
CY		 657 case Opt_prjquota:
658 set_opt(sbi, PRJQUOTA);
659 break;
4b2414d0
CY		 660 case Opt_usrjquota:
661 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
662 if (ret)
663 return ret;
664 break;
665 case Opt_grpjquota:
666 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
667 if (ret)
668 return ret;
669 break;
670 case Opt_prjjquota:
671 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
672 if (ret)
673 return ret;
674 break;
675 case Opt_offusrjquota:
676 ret = f2fs_clear_qf_name(sb, USRQUOTA);
677 if (ret)
678 return ret;
679 break;
680 case Opt_offgrpjquota:
681 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
682 if (ret)
683 return ret;
684 break;
685 case Opt_offprjjquota:
686 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
687 if (ret)
688 return ret;
689 break;
690 case Opt_jqfmt_vfsold:
63189b78 691 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 692 break;
693 case Opt_jqfmt_vfsv0:
63189b78 694 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 695 break;
696 case Opt_jqfmt_vfsv1:
63189b78 697 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 698 break;
699 case Opt_noquota:
700 clear_opt(sbi, QUOTA);
701 clear_opt(sbi, USRQUOTA);
702 clear_opt(sbi, GRPQUOTA);
703 clear_opt(sbi, PRJQUOTA);
704 break;
0abd675e 705#else
4b2414d0 706 case Opt_quota:
0abd675e
CY		 707 case Opt_usrquota:
708 case Opt_grpquota:
5c57132e 709 case Opt_prjquota:
4b2414d0
CY		 710 case Opt_usrjquota:
711 case Opt_grpjquota:
712 case Opt_prjjquota:
713 case Opt_offusrjquota:
714 case Opt_offgrpjquota:
715 case Opt_offprjjquota:
716 case Opt_jqfmt_vfsold:
717 case Opt_jqfmt_vfsv0:
718 case Opt_jqfmt_vfsv1:
719 case Opt_noquota:
dcbb4c10 720 f2fs_info(sbi, "quota operations not supported");
0abd675e
CY		 721 break;
722#endif
0cdd3195
HL		 723 case Opt_whint:
724 name = match_strdup(&args[0]);
725 if (!name)
726 return -ENOMEM;
727 if (strlen(name) == 10 &&
728 !strncmp(name, "user-based", 10)) {
63189b78 729 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
0cdd3195
HL		 730 } else if (strlen(name) == 3 &&
731 !strncmp(name, "off", 3)) {
63189b78 732 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
f2e703f9
HL		 733 } else if (strlen(name) == 8 &&
734 !strncmp(name, "fs-based", 8)) {
63189b78 735 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
0cdd3195 736 } else {
5222595d 737 kvfree(name);
0cdd3195
HL		 738 return -EINVAL;
739 }
5222595d 740 kvfree(name);
0cdd3195 741 break;
07939627
JK		 742 case Opt_alloc:
743 name = match_strdup(&args[0]);
744 if (!name)
745 return -ENOMEM;
746
747 if (strlen(name) == 7 &&
748 !strncmp(name, "default", 7)) {
63189b78 749 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
07939627
JK		 750 } else if (strlen(name) == 5 &&
751 !strncmp(name, "reuse", 5)) {
63189b78 752 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627 753 } else {
5222595d 754 kvfree(name);
07939627
JK		 755 return -EINVAL;
756 }
5222595d 757 kvfree(name);
07939627 758 break;
93cf93f1
JZ		 759 case Opt_fsync:
760 name = match_strdup(&args[0]);
761 if (!name)
762 return -ENOMEM;
763 if (strlen(name) == 5 &&
764 !strncmp(name, "posix", 5)) {
63189b78 765 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
93cf93f1
JZ		 766 } else if (strlen(name) == 6 &&
767 !strncmp(name, "strict", 6)) {
63189b78 768 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
d6290814
JK		 769 } else if (strlen(name) == 9 &&
770 !strncmp(name, "nobarrier", 9)) {
771 F2FS_OPTION(sbi).fsync_mode =
772 FSYNC_MODE_NOBARRIER;
93cf93f1 773 } else {
5222595d 774 kvfree(name);
93cf93f1
JZ		 775 return -EINVAL;
776 }
5222595d 777 kvfree(name);
93cf93f1 778 break;
ff62af20 779 case Opt_test_dummy_encryption:
643fa961 780#ifdef CONFIG_FS_ENCRYPTION
7beb01f7 781 if (!f2fs_sb_has_encrypt(sbi)) {
dcbb4c10 782 f2fs_err(sbi, "Encrypt feature is off");
ff62af20
SY		 783 return -EINVAL;
784 }
785
786 F2FS_OPTION(sbi).test_dummy_encryption = true;
dcbb4c10 787 f2fs_info(sbi, "Test dummy encryption mode enabled");
ff62af20 788#else
dcbb4c10 789 f2fs_info(sbi, "Test dummy encryption mount option ignored");
ff62af20
SY		 790#endif
791 break;
4d3aed70
DR		 792 case Opt_checkpoint_disable_cap_perc:
793 if (args->from && match_int(args, &arg))
4354994f 794 return -EINVAL;
4d3aed70
DR		 795 if (arg < 0 || arg > 100)
796 return -EINVAL;
797 if (arg == 100)
798 F2FS_OPTION(sbi).unusable_cap =
799 sbi->user_block_count;
800 else
801 F2FS_OPTION(sbi).unusable_cap =
802 (sbi->user_block_count / 100) * arg;
803 set_opt(sbi, DISABLE_CHECKPOINT);
804 break;
805 case Opt_checkpoint_disable_cap:
806 if (args->from && match_int(args, &arg))
807 return -EINVAL;
808 F2FS_OPTION(sbi).unusable_cap = arg;
809 set_opt(sbi, DISABLE_CHECKPOINT);
810 break;
811 case Opt_checkpoint_disable:
812 set_opt(sbi, DISABLE_CHECKPOINT);
813 break;
814 case Opt_checkpoint_enable:
815 clear_opt(sbi, DISABLE_CHECKPOINT);
4354994f 816 break;
4c8ff709
CY		 817 case Opt_compress_algorithm:
818 if (!f2fs_sb_has_compression(sbi)) {
819 f2fs_err(sbi, "Compression feature if off");
820 return -EINVAL;
821 }
822 name = match_strdup(&args[0]);
823 if (!name)
824 return -ENOMEM;
825 if (strlen(name) == 3 && !strcmp(name, "lzo")) {
826 F2FS_OPTION(sbi).compress_algorithm =
827 COMPRESS_LZO;
828 } else if (strlen(name) == 3 &&
829 !strcmp(name, "lz4")) {
830 F2FS_OPTION(sbi).compress_algorithm =
831 COMPRESS_LZ4;
832 } else {
833 kfree(name);
834 return -EINVAL;
835 }
836 kfree(name);
837 break;
838 case Opt_compress_log_size:
839 if (!f2fs_sb_has_compression(sbi)) {
840 f2fs_err(sbi, "Compression feature is off");
841 return -EINVAL;
842 }
843 if (args->from && match_int(args, &arg))
844 return -EINVAL;
845 if (arg < MIN_COMPRESS_LOG_SIZE ||
846 arg > MAX_COMPRESS_LOG_SIZE) {
847 f2fs_err(sbi,
848 "Compress cluster log size is out of range");
849 return -EINVAL;
850 }
851 F2FS_OPTION(sbi).compress_log_size = arg;
852 break;
853 case Opt_compress_extension:
854 if (!f2fs_sb_has_compression(sbi)) {
855 f2fs_err(sbi, "Compression feature is off");
856 return -EINVAL;
857 }
858 name = match_strdup(&args[0]);
859 if (!name)
860 return -ENOMEM;
861
862 ext = F2FS_OPTION(sbi).extensions;
863 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
864
865 if (strlen(name) >= F2FS_EXTENSION_LEN ||
866 ext_cnt >= COMPRESS_EXT_NUM) {
867 f2fs_err(sbi,
868 "invalid extension length/number");
869 kfree(name);
870 return -EINVAL;
871 }
872
873 strcpy(ext[ext_cnt], name);
874 F2FS_OPTION(sbi).compress_ext_cnt++;
875 kfree(name);
876 break;
696c018c 877 default:
dcbb4c10
JP		 878 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
879 p);
696c018c
NJ		 880 return -EINVAL;
881 }
882 }
4b2414d0
CY		 883#ifdef CONFIG_QUOTA
884 if (f2fs_check_quota_options(sbi))
885 return -EINVAL;
00960c2c 886#else
7beb01f7 887 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 888 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
00960c2c
SY		 889 return -EINVAL;
890 }
7beb01f7 891 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 892 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
4ddc1b28
CY		 893 return -EINVAL;
894 }
4b2414d0 895#endif
5aba5430
DR		 896#ifndef CONFIG_UNICODE
897 if (f2fs_sb_has_casefold(sbi)) {
898 f2fs_err(sbi,
899 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
900 return -EINVAL;
901 }
902#endif
ec91538d 903
b0332a0f 904 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
dcbb4c10
JP		 905 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
906 F2FS_IO_SIZE_KB(sbi));
ec91538d
JK		 907 return -EINVAL;
908 }
6afc662e
CY		 909
910 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
70db5b04
JK		 911 int min_size, max_size;
912
7beb01f7
CY		 913 if (!f2fs_sb_has_extra_attr(sbi) ||
914 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
dcbb4c10 915 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
4d817ae0
CY		 916 return -EINVAL;
917 }
6afc662e 918 if (!test_opt(sbi, INLINE_XATTR)) {
dcbb4c10 919 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
6afc662e
CY		 920 return -EINVAL;
921 }
70db5b04
JK		 922
923 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
dd6c89b5 924 max_size = MAX_INLINE_XATTR_SIZE;
70db5b04
JK		 925
926 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
927 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
dcbb4c10
JP		 928 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
929 min_size, max_size);
6afc662e
CY		 930 return -EINVAL;
931 }
932 }
0cdd3195 933
b0332a0f 934 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
dcbb4c10 935 f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
4354994f
DR		 936 return -EINVAL;
937 }
938
0cdd3195
HL		 939 /* Not pass down write hints if the number of active logs is lesser
940 * than NR_CURSEG_TYPE.
941 */
63189b78
CY		 942 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
943 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 944 return 0;
945}
946
aff063e2
JK		 947static struct inode *f2fs_alloc_inode(struct super_block *sb)
948{
949 struct f2fs_inode_info *fi;
950
a0acdfe0 951 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 952 if (!fi)
953 return NULL;
954
955 init_once((void *) fi);
956
434720fa 957 /* Initialize f2fs-specific inode info */
204706c7 958 atomic_set(&fi->dirty_pages, 0);
d928bfbf 959 init_rwsem(&fi->i_sem);
c10c9820 960 spin_lock_init(&fi->i_size_lock);
2710fd7e 961 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 962 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 963 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 964 INIT_LIST_HEAD(&fi->inmem_pages);
965 mutex_init(&fi->inmem_lock);
b2532c69
CY		 966 init_rwsem(&fi->i_gc_rwsem[READ]);
967 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 968 init_rwsem(&fi->i_mmap_sem);
27161f13 969 init_rwsem(&fi->i_xattr_sem);
aff063e2 970
ab9fa662
JK		 971 /* Will be used by directory only */
972 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 973
aff063e2
JK		 974 return &fi->vfs_inode;
975}
976
531ad7d5
JK		 977static int f2fs_drop_inode(struct inode *inode)
978{
a8933b6b 979 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
b8d96a30 980 int ret;
a8933b6b
CY		 981
982 /*
983 * during filesystem shutdown, if checkpoint is disabled,
984 * drop useless meta/node dirty pages.
985 */
986 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
987 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
988 inode->i_ino == F2FS_META_INO(sbi)) {
989 trace_f2fs_drop_inode(inode, 1);
990 return 1;
991 }
992 }
993
531ad7d5
JK		 994 /*
995 * This is to avoid a deadlock condition like below.
996 * writeback_single_inode(inode)
997 * - f2fs_write_data_page
998 * - f2fs_gc -> iput -> evict
999 * - inode_wait_for_writeback(inode)
1000 */
0f18b462 1001 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 1002 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 1003 /* to avoid evict_inode call simultaneously */
1004 atomic_inc(&inode->i_count);
06e1bc05
JK		 1005 spin_unlock(&inode->i_lock);
1006
1007 /* some remained atomic pages should discarded */
1008 if (f2fs_is_atomic_file(inode))
4d57b86d 1009 f2fs_drop_inmem_pages(inode);
06e1bc05 1010
3e72f721
JK		 1011 /* should remain fi->extent_tree for writepage */
1012 f2fs_destroy_extent_node(inode);
1013
06e1bc05 1014 sb_start_intwrite(inode->i_sb);
fc9581c8 1015 f2fs_i_size_write(inode, 0);
06e1bc05 1016
a0770e13 1017 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1018 inode, NULL, 0, DATA);
1019 truncate_inode_pages_final(inode->i_mapping);
1020
06e1bc05 1021 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 1022 f2fs_truncate(inode);
06e1bc05
JK		 1023
1024 sb_end_intwrite(inode->i_sb);
1025
06e1bc05 1026 spin_lock(&inode->i_lock);
3e72f721 1027 atomic_dec(&inode->i_count);
06e1bc05 1028 }
b8d96a30 1029 trace_f2fs_drop_inode(inode, 0);
531ad7d5 1030 return 0;
06e1bc05 1031 }
b8d96a30 1032 ret = generic_drop_inode(inode);
8ce589c7
EB		 1033 if (!ret)
1034 ret = fscrypt_drop_inode(inode);
b8d96a30
HP		 1035 trace_f2fs_drop_inode(inode, ret);
1036 return ret;
531ad7d5
JK		 1037}
1038
7c45729a 1039int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 1040{
0f18b462 1041 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 1042 int ret = 0;
0f18b462 1043
0f18b462
JK		 1044 spin_lock(&sbi->inode_lock[DIRTY_META]);
1045 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 1046 ret = 1;
1047 } else {
1048 set_inode_flag(inode, FI_DIRTY_INODE);
1049 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 1050 }
7c45729a
JK		 1051 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1052 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 1053 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 1054 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1055 }
338bbfa0 1056 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 1057 return ret;
0f18b462
JK		 1058}
1059
1060void f2fs_inode_synced(struct inode *inode)
1061{
1062 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1063
1064 spin_lock(&sbi->inode_lock[DIRTY_META]);
1065 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1066 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1067 return;
1068 }
7c45729a
JK		 1069 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1070 list_del_init(&F2FS_I(inode)->gdirty_list);
1071 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1072 }
0f18b462 1073 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 1074 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 1075 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 1076 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 1077}
1078
b56ab837
JK		 1079/*
1080 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1081 *
1082 * We should call set_dirty_inode to write the dirty inode through write_inode.
1083 */
1084static void f2fs_dirty_inode(struct inode *inode, int flags)
1085{
1086 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1087
1088 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1089 inode->i_ino == F2FS_META_INO(sbi))
1090 return;
1091
1092 if (flags == I_DIRTY_TIME)
1093 return;
1094
1095 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1096 clear_inode_flag(inode, FI_AUTO_RECOVER);
1097
7c45729a 1098 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 1099}
1100
d01718a0 1101static void f2fs_free_inode(struct inode *inode)
aff063e2 1102{
2c58d548 1103 fscrypt_free_inode(inode);
aff063e2
JK		 1104 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1105}
1106
523be8a6
JK		 1107static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1108{
41382ec4 1109 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 1110 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 1111}
1112
3c62be17
JK		 1113static void destroy_device_list(struct f2fs_sb_info *sbi)
1114{
1115 int i;
1116
1117 for (i = 0; i < sbi->s_ndevs; i++) {
1118 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1119#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1120 kvfree(FDEV(i).blkz_seq);
3c62be17
JK		 1121#endif
1122 }
5222595d 1123 kvfree(sbi->devs);
3c62be17
JK		 1124}
1125
aff063e2
JK		 1126static void f2fs_put_super(struct super_block *sb)
1127{
1128 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1129 int i;
cf5c759f 1130 bool dropped;
aff063e2 1131
0abd675e 1132 f2fs_quota_off_umount(sb);
aff063e2 1133
2658e50d
JK		 1134 /* prevent remaining shrinker jobs */
1135 mutex_lock(&sbi->umount_mutex);
1136
85dc2f2c
JK		 1137 /*
1138 * We don't need to do checkpoint when superblock is clean.
1139 * But, the previous checkpoint was not done by umount, it needs to do
1140 * clean checkpoint again.
1141 */
4354994f
DR		 1142 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1143 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1144 struct cp_control cpc = {
1145 .reason = CP_UMOUNT,
1146 };
4d57b86d 1147 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1148 }
aff063e2 1149
4e6a8d9b 1150 /* be sure to wait for any on-going discard commands */
03f2c02d 1151 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1152
7d20c8ab
CY		 1153 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1154 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1155 struct cp_control cpc = {
1156 .reason = CP_UMOUNT | CP_TRIMMED,
1157 };
4d57b86d 1158 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1159 }
1160
cf779cab
JK		 1161 /*
1162 * normally superblock is clean, so we need to release this.
1163 * In addition, EIO will skip do checkpoint, we need this as well.
1164 */
4d57b86d 1165 f2fs_release_ino_entry(sbi, true);
6f12ac25 1166
2658e50d
JK		 1167 f2fs_leave_shrinker(sbi);
1168 mutex_unlock(&sbi->umount_mutex);
1169
17c19120 1170 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1171 f2fs_flush_merged_writes(sbi);
17c19120 1172
bf22c3cc 1173 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
50fa53ec
CY		 1174
1175 f2fs_bug_on(sbi, sbi->fsync_node_num);
1176
aff063e2 1177 iput(sbi->node_inode);
7c77bf7d
JK		 1178 sbi->node_inode = NULL;
1179
aff063e2 1180 iput(sbi->meta_inode);
7c77bf7d 1181 sbi->meta_inode = NULL;
aff063e2 1182
60aa4d55
ST		 1183 /*
1184 * iput() can update stat information, if f2fs_write_checkpoint()
1185 * above failed with error.
1186 */
1187 f2fs_destroy_stats(sbi);
1188
aff063e2 1189 /* destroy f2fs internal modules */
4d57b86d
CY		 1190 f2fs_destroy_node_manager(sbi);
1191 f2fs_destroy_segment_manager(sbi);
aff063e2 1192
4c8ff709
CY		 1193 f2fs_destroy_post_read_wq(sbi);
1194
5222595d 1195 kvfree(sbi->ckpt);
a398101a 1196
dc6b2055 1197 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1198
1199 sb->s_fs_info = NULL;
43b6573b
KM		 1200 if (sbi->s_chksum_driver)
1201 crypto_free_shash(sbi->s_chksum_driver);
5222595d 1202 kvfree(sbi->raw_super);
523be8a6 1203
3c62be17 1204 destroy_device_list(sbi);
b6895e8f 1205 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1206#ifdef CONFIG_QUOTA
1207 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1208 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1209#endif
523be8a6 1210 destroy_percpu_info(sbi);
a912b54d 1211 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 1212 kvfree(sbi->write_io[i]);
5aba5430
DR		 1213#ifdef CONFIG_UNICODE
1214 utf8_unload(sbi->s_encoding);
1215#endif
5222595d 1216 kvfree(sbi);
aff063e2
JK		 1217}
1218
1219int f2fs_sync_fs(struct super_block *sb, int sync)
1220{
1221 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1222 int err = 0;
aff063e2 1223
1f227a3e
JK		 1224 if (unlikely(f2fs_cp_error(sbi)))
1225 return 0;
4354994f
DR		 1226 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1227 return 0;
1f227a3e 1228
a2a4a7e4
NJ		 1229 trace_f2fs_sync_fs(sb, sync);
1230
4b2414d0
CY		 1231 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1232 return -EAGAIN;
1233
b7473754 1234 if (sync) {
d5053a34
JK		 1235 struct cp_control cpc;
1236
119ee914
JK		 1237 cpc.reason = __get_cp_reason(sbi);
1238
fb24fea7 1239 down_write(&sbi->gc_lock);
4d57b86d 1240 err = f2fs_write_checkpoint(sbi, &cpc);
fb24fea7 1241 up_write(&sbi->gc_lock);
b7473754 1242 }
05ca3632 1243 f2fs_trace_ios(NULL, 1);
aff063e2 1244
c34f42e2 1245 return err;
aff063e2
JK		 1246}
1247
d6212a5f
CL		 1248static int f2fs_freeze(struct super_block *sb)
1249{
77888c1e 1250 if (f2fs_readonly(sb))
d6212a5f
CL		 1251 return 0;
1252
b4b9d34c
JK		 1253 /* IO error happened before */
1254 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1255 return -EIO;
1256
1257 /* must be clean, since sync_filesystem() was already called */
1258 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1259 return -EINVAL;
1260 return 0;
d6212a5f
CL		 1261}
1262
1263static int f2fs_unfreeze(struct super_block *sb)
1264{
1265 return 0;
1266}
1267
ddc34e32
CY		 1268#ifdef CONFIG_QUOTA
1269static int f2fs_statfs_project(struct super_block *sb,
1270 kprojid_t projid, struct kstatfs *buf)
1271{
1272 struct kqid qid;
1273 struct dquot *dquot;
1274 u64 limit;
1275 u64 curblock;
1276
1277 qid = make_kqid_projid(projid);
1278 dquot = dqget(sb, qid);
1279 if (IS_ERR(dquot))
1280 return PTR_ERR(dquot);
955ac6e5 1281 spin_lock(&dquot->dq_dqb_lock);
ddc34e32 1282
bf2cbd3c
CX		 1283 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1284 dquot->dq_dqb.dqb_bhardlimit);
acdf2172
CX		 1285 if (limit)
1286 limit >>= sb->s_blocksize_bits;
909110c0 1287
ddc34e32
CY		 1288 if (limit && buf->f_blocks > limit) {
1289 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1290 buf->f_blocks = limit;
1291 buf->f_bfree = buf->f_bavail =
1292 (buf->f_blocks > curblock) ?
1293 (buf->f_blocks - curblock) : 0;
1294 }
1295
bf2cbd3c
CX		 1296 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1297 dquot->dq_dqb.dqb_ihardlimit);
909110c0 1298
ddc34e32
CY		 1299 if (limit && buf->f_files > limit) {
1300 buf->f_files = limit;
1301 buf->f_ffree =
1302 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1303 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1304 }
1305
955ac6e5 1306 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1307 dqput(dquot);
1308 return 0;
1309}
1310#endif
1311
aff063e2
JK		 1312static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1313{
1314 struct super_block *sb = dentry->d_sb;
1315 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1316 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1317 block_t total_count, user_block_count, start_count;
0cc091d0 1318 u64 avail_node_count;
aff063e2
JK		 1319
1320 total_count = le64_to_cpu(sbi->raw_super->block_count);
1321 user_block_count = sbi->user_block_count;
1322 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1323 buf->f_type = F2FS_SUPER_MAGIC;
1324 buf->f_bsize = sbi->blocksize;
1325
1326 buf->f_blocks = total_count - start_count;
f66c027e 1327 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1328 sbi->current_reserved_blocks;
c9c8ed50
CY		 1329
1330 spin_lock(&sbi->stat_lock);
4354994f
DR		 1331 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1332 buf->f_bfree = 0;
1333 else
1334 buf->f_bfree -= sbi->unusable_block_count;
c9c8ed50 1335 spin_unlock(&sbi->stat_lock);
4354994f 1336
63189b78
CY		 1337 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1338 buf->f_bavail = buf->f_bfree -
1339 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1340 else
1341 buf->f_bavail = 0;
aff063e2 1342
27cae0bc 1343 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1344
1345 if (avail_node_count > user_block_count) {
1346 buf->f_files = user_block_count;
1347 buf->f_ffree = buf->f_bavail;
1348 } else {
1349 buf->f_files = avail_node_count;
1350 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1351 buf->f_bavail);
1352 }
aff063e2 1353
5a20d339 1354 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1355 buf->f_fsid.val[0] = (u32)id;
1356 buf->f_fsid.val[1] = (u32)(id >> 32);
1357
ddc34e32
CY		 1358#ifdef CONFIG_QUOTA
1359 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1360 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1361 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1362 }
1363#endif
aff063e2
JK		 1364 return 0;
1365}
1366
4b2414d0
CY		 1367static inline void f2fs_show_quota_options(struct seq_file *seq,
1368 struct super_block *sb)
1369{
1370#ifdef CONFIG_QUOTA
1371 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1372
63189b78 1373 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1374 char *fmtname = "";
1375
63189b78 1376 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1377 case QFMT_VFS_OLD:
1378 fmtname = "vfsold";
1379 break;
1380 case QFMT_VFS_V0:
1381 fmtname = "vfsv0";
1382 break;
1383 case QFMT_VFS_V1:
1384 fmtname = "vfsv1";
1385 break;
1386 }
1387 seq_printf(seq, ",jqfmt=%s", fmtname);
1388 }
1389
63189b78
CY		 1390 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1391 seq_show_option(seq, "usrjquota",
1392 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1393
63189b78
CY		 1394 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1395 seq_show_option(seq, "grpjquota",
1396 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1397
63189b78
CY		 1398 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1399 seq_show_option(seq, "prjjquota",
1400 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1401#endif
1402}
1403
4c8ff709
CY		 1404static inline void f2fs_show_compress_options(struct seq_file *seq,
1405 struct super_block *sb)
1406{
1407 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1408 char *algtype = "";
1409 int i;
1410
1411 if (!f2fs_sb_has_compression(sbi))
1412 return;
1413
1414 switch (F2FS_OPTION(sbi).compress_algorithm) {
1415 case COMPRESS_LZO:
1416 algtype = "lzo";
1417 break;
1418 case COMPRESS_LZ4:
1419 algtype = "lz4";
1420 break;
1421 }
1422 seq_printf(seq, ",compress_algorithm=%s", algtype);
1423
1424 seq_printf(seq, ",compress_log_size=%u",
1425 F2FS_OPTION(sbi).compress_log_size);
1426
1427 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1428 seq_printf(seq, ",compress_extension=%s",
1429 F2FS_OPTION(sbi).extensions[i]);
1430 }
1431}
1432
aff063e2
JK		 1433static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1434{
1435 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1436
bbbc34fd
CY		 1437 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1438 seq_printf(seq, ",background_gc=%s", "sync");
1439 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1440 seq_printf(seq, ",background_gc=%s", "on");
1441 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
696c018c 1442 seq_printf(seq, ",background_gc=%s", "off");
bbbc34fd 1443
aff063e2
JK		 1444 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1445 seq_puts(seq, ",disable_roll_forward");
a9117eca
CY		 1446 if (test_opt(sbi, NORECOVERY))
1447 seq_puts(seq, ",norecovery");
aff063e2
JK		 1448 if (test_opt(sbi, DISCARD))
1449 seq_puts(seq, ",discard");
81621f97
ST		 1450 else
1451 seq_puts(seq, ",nodiscard");
aff063e2 1452 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1453 seq_puts(seq, ",no_heap");
1454 else
1455 seq_puts(seq, ",heap");
aff063e2
JK		 1456#ifdef CONFIG_F2FS_FS_XATTR
1457 if (test_opt(sbi, XATTR_USER))
1458 seq_puts(seq, ",user_xattr");
1459 else
1460 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1461 if (test_opt(sbi, INLINE_XATTR))
1462 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1463 else
1464 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1465 if (test_opt(sbi, INLINE_XATTR_SIZE))
1466 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1467 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1468#endif
1469#ifdef CONFIG_F2FS_FS_POSIX_ACL
1470 if (test_opt(sbi, POSIX_ACL))
1471 seq_puts(seq, ",acl");
1472 else
1473 seq_puts(seq, ",noacl");
1474#endif
1475 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1476 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1477 if (test_opt(sbi, INLINE_DATA))
1478 seq_puts(seq, ",inline_data");
75342797
WL		 1479 else
1480 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1481 if (test_opt(sbi, INLINE_DENTRY))
1482 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1483 else
1484 seq_puts(seq, ",noinline_dentry");
b270ad6f 1485 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1486 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1487 if (test_opt(sbi, NOBARRIER))
1488 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1489 if (test_opt(sbi, FASTBOOT))
1490 seq_puts(seq, ",fastboot");
89672159
CY		 1491 if (test_opt(sbi, EXTENT_CACHE))
1492 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1493 else
1494 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1495 if (test_opt(sbi, DATA_FLUSH))
1496 seq_puts(seq, ",data_flush");
36abef4e
JK		 1497
1498 seq_puts(seq, ",mode=");
b0332a0f 1499 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
36abef4e 1500 seq_puts(seq, "adaptive");
b0332a0f 1501 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
36abef4e 1502 seq_puts(seq, "lfs");
63189b78 1503 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1504 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1505 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1506 F2FS_OPTION(sbi).root_reserved_blocks,
1507 from_kuid_munged(&init_user_ns,
1508 F2FS_OPTION(sbi).s_resuid),
1509 from_kgid_munged(&init_user_ns,
1510 F2FS_OPTION(sbi).s_resgid));
ec91538d 1511 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1512 seq_printf(seq, ",io_bits=%u",
1513 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1514#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1515 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1516 seq_printf(seq, ",fault_injection=%u",
63189b78 1517 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1518 seq_printf(seq, ",fault_type=%u",
1519 F2FS_OPTION(sbi).fault_info.inject_type);
1520 }
0cc0dec2 1521#endif
0abd675e 1522#ifdef CONFIG_QUOTA
4b2414d0
CY		 1523 if (test_opt(sbi, QUOTA))
1524 seq_puts(seq, ",quota");
0abd675e
CY		 1525 if (test_opt(sbi, USRQUOTA))
1526 seq_puts(seq, ",usrquota");
1527 if (test_opt(sbi, GRPQUOTA))
1528 seq_puts(seq, ",grpquota");
5c57132e
CY		 1529 if (test_opt(sbi, PRJQUOTA))
1530 seq_puts(seq, ",prjquota");
0cc0dec2 1531#endif
4b2414d0 1532 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1533 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1534 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1535 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1536 seq_printf(seq, ",whint_mode=%s", "fs-based");
643fa961 1537#ifdef CONFIG_FS_ENCRYPTION
ff62af20
SY		 1538 if (F2FS_OPTION(sbi).test_dummy_encryption)
1539 seq_puts(seq, ",test_dummy_encryption");
1540#endif
aff063e2 1541
63189b78 1542 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1543 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1544 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1545 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1546
4354994f 1547 if (test_opt(sbi, DISABLE_CHECKPOINT))
4d3aed70
DR		 1548 seq_printf(seq, ",checkpoint=disable:%u",
1549 F2FS_OPTION(sbi).unusable_cap);
63189b78 1550 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1551 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1552 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1553 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1554 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1555 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
4c8ff709
CY		 1556
1557 f2fs_show_compress_options(seq, sbi->sb);
aff063e2
JK		 1558 return 0;
1559}
1560
498c5e9f
YH		 1561static void default_options(struct f2fs_sb_info *sbi)
1562{
1563 /* init some FS parameters */
63189b78
CY		 1564 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1565 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1566 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1567 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1568 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1569 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1570 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1571 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
4c8ff709
CY		 1572 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZO;
1573 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
1574 F2FS_OPTION(sbi).compress_ext_cnt = 0;
bbbc34fd 1575 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
498c5e9f 1576
39133a50 1577 set_opt(sbi, INLINE_XATTR);
498c5e9f 1578 set_opt(sbi, INLINE_DATA);
97c1794a 1579 set_opt(sbi, INLINE_DENTRY);
3e72f721 1580 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1581 set_opt(sbi, NOHEAP);
4354994f 1582 clear_opt(sbi, DISABLE_CHECKPOINT);
4d3aed70 1583 F2FS_OPTION(sbi).unusable_cap = 0;
1751e8a6 1584 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1585 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1586 set_opt(sbi, DISCARD);
7beb01f7 1587 if (f2fs_sb_has_blkzoned(sbi))
b0332a0f 1588 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
a39e5365 1589 else
b0332a0f 1590 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
498c5e9f
YH		 1591
1592#ifdef CONFIG_F2FS_FS_XATTR
1593 set_opt(sbi, XATTR_USER);
1594#endif
1595#ifdef CONFIG_F2FS_FS_POSIX_ACL
1596 set_opt(sbi, POSIX_ACL);
1597#endif
36dbd328 1598
d494500a 1599 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1600}
1601
ea676733
JK		 1602#ifdef CONFIG_QUOTA
1603static int f2fs_enable_quotas(struct super_block *sb);
1604#endif
4354994f
DR		 1605
1606static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1607{
812a9597 1608 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1609 struct cp_control cpc;
812a9597
JK		 1610 int err = 0;
1611 int ret;
4d3aed70 1612 block_t unusable;
4354994f 1613
812a9597 1614 if (s_flags & SB_RDONLY) {
dcbb4c10 1615 f2fs_err(sbi, "checkpoint=disable on readonly fs");
812a9597
JK		 1616 return -EINVAL;
1617 }
4354994f
DR		 1618 sbi->sb->s_flags |= SB_ACTIVE;
1619
4354994f
DR		 1620 f2fs_update_time(sbi, DISABLE_TIME);
1621
1622 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
fb24fea7 1623 down_write(&sbi->gc_lock);
4354994f 1624 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1625 if (err == -ENODATA) {
1626 err = 0;
4354994f 1627 break;
812a9597 1628 }
8f31b466 1629 if (err && err != -EAGAIN)
812a9597 1630 break;
4354994f 1631 }
4354994f 1632
812a9597
JK		 1633 ret = sync_filesystem(sbi->sb);
1634 if (ret || err) {
1635 err = ret ? ret: err;
1636 goto restore_flag;
1637 }
4354994f 1638
4d3aed70
DR		 1639 unusable = f2fs_get_unusable_blocks(sbi);
1640 if (f2fs_disable_cp_again(sbi, unusable)) {
812a9597
JK		 1641 err = -EAGAIN;
1642 goto restore_flag;
1643 }
4354994f 1644
fb24fea7 1645 down_write(&sbi->gc_lock);
4354994f
DR		 1646 cpc.reason = CP_PAUSE;
1647 set_sbi_flag(sbi, SBI_CP_DISABLED);
896285ad
CY		 1648 err = f2fs_write_checkpoint(sbi, &cpc);
1649 if (err)
1650 goto out_unlock;
4354994f 1651
c9c8ed50 1652 spin_lock(&sbi->stat_lock);
4d3aed70 1653 sbi->unusable_block_count = unusable;
c9c8ed50
CY		 1654 spin_unlock(&sbi->stat_lock);
1655
896285ad 1656out_unlock:
fb24fea7 1657 up_write(&sbi->gc_lock);
812a9597 1658restore_flag:
7a88ddb5 1659 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
812a9597 1660 return err;
4354994f
DR		 1661}
1662
1663static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1664{
fb24fea7 1665 down_write(&sbi->gc_lock);
4354994f
DR		 1666 f2fs_dirty_to_prefree(sbi);
1667
1668 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1669 set_sbi_flag(sbi, SBI_IS_DIRTY);
fb24fea7 1670 up_write(&sbi->gc_lock);
4354994f
DR		 1671
1672 f2fs_sync_fs(sbi->sb, 1);
1673}
1674
696c018c
NJ		 1675static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1676{
1677 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1678 struct f2fs_mount_info org_mount_opt;
0abd675e 1679 unsigned long old_sb_flags;
63189b78 1680 int err;
876dc59e
GZ		 1681 bool need_restart_gc = false;
1682 bool need_stop_gc = false;
9cd81ce3 1683 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f 1684 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1f78adfa 1685 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
4354994f 1686 bool checkpoint_changed;
4b2414d0 1687#ifdef CONFIG_QUOTA
4b2414d0
CY		 1688 int i, j;
1689#endif
696c018c
NJ		 1690
1691 /*
1692 * Save the old mount options in case we
1693 * need to restore them.
1694 */
1695 org_mount_opt = sbi->mount_opt;
0abd675e 1696 old_sb_flags = sb->s_flags;
696c018c 1697
4b2414d0 1698#ifdef CONFIG_QUOTA
63189b78 1699 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1700 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1701 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1702 org_mount_opt.s_qf_names[i] =
1703 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1704 GFP_KERNEL);
1705 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1706 for (j = 0; j < i; j++)
5222595d 1707 kvfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1708 return -ENOMEM;
1709 }
1710 } else {
63189b78 1711 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1712 }
1713 }
1714#endif
1715
df728b0f 1716 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1717 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f 1718 err = f2fs_commit_super(sbi, false);
dcbb4c10
JP		 1719 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1720 err);
df728b0f
JK		 1721 if (!err)
1722 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1723 }
1724
498c5e9f 1725 default_options(sbi);
26666c8a 1726
696c018c
NJ		 1727 /* parse mount options */
1728 err = parse_options(sb, data);
1729 if (err)
1730 goto restore_opts;
4354994f
DR		 1731 checkpoint_changed =
1732 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1733
1734 /*
1735 * Previous and new state of filesystem is RO,
876dc59e 1736 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1737 */
1751e8a6 1738 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1739 goto skip;
1740
ea676733 1741#ifdef CONFIG_QUOTA
1751e8a6 1742 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1743 err = dquot_suspend(sb, -1);
1744 if (err < 0)
1745 goto restore_opts;
4354994f 1746 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1747 /* dquot_resume needs RW */
1751e8a6 1748 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1749 if (sb_any_quota_suspended(sb)) {
1750 dquot_resume(sb, -1);
7beb01f7 1751 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1752 err = f2fs_enable_quotas(sb);
1753 if (err)
1754 goto restore_opts;
1755 }
0abd675e 1756 }
ea676733 1757#endif
9cd81ce3
CY		 1758 /* disallow enable/disable extent_cache dynamically */
1759 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1760 err = -EINVAL;
dcbb4c10 1761 f2fs_warn(sbi, "switch extent_cache option is not allowed");
9cd81ce3
CY		 1762 goto restore_opts;
1763 }
1764
1f78adfa
CY		 1765 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
1766 err = -EINVAL;
1767 f2fs_warn(sbi, "switch io_bits option is not allowed");
1768 goto restore_opts;
1769 }
1770
4354994f
DR		 1771 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1772 err = -EINVAL;
dcbb4c10 1773 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
4354994f
DR		 1774 goto restore_opts;
1775 }
1776
696c018c
NJ		 1777 /*
1778 * We stop the GC thread if FS is mounted as RO
1779 * or if background_gc = off is passed in mount
1780 * option. Also sync the filesystem.
1781 */
bbbc34fd
CY		 1782 if ((*flags & SB_RDONLY) ||
1783 F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) {
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) {
5df7731f
CY		 1888 congestion_wait(BLK_RW_ASYNC,
1889 DEFAULT_IO_TIMEOUT);
4e46a023
JK		 1890 goto repeat;
1891 }
af033b2a 1892 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1893 return PTR_ERR(page);
4e46a023 1894 }
0abd675e
CY		 1895
1896 lock_page(page);
1897
1898 if (unlikely(page->mapping != mapping)) {
1899 f2fs_put_page(page, 1);
1900 goto repeat;
1901 }
1902 if (unlikely(!PageUptodate(page))) {
1903 f2fs_put_page(page, 1);
af033b2a 1904 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1905 return -EIO;
1906 }
1907
1908 kaddr = kmap_atomic(page);
1909 memcpy(data, kaddr + offset, tocopy);
1910 kunmap_atomic(kaddr);
1911 f2fs_put_page(page, 1);
1912
1913 offset = 0;
1914 toread -= tocopy;
1915 data += tocopy;
1916 blkidx++;
1917 }
1918 return len;
1919}
1920
1921/* Write to quotafile */
1922static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1923 const char *data, size_t len, loff_t off)
1924{
1925 struct inode *inode = sb_dqopt(sb)->files[type];
1926 struct address_space *mapping = inode->i_mapping;
1927 const struct address_space_operations *a_ops = mapping->a_ops;
1928 int offset = off & (sb->s_blocksize - 1);
1929 size_t towrite = len;
1930 struct page *page;
1931 char *kaddr;
1932 int err = 0;
1933 int tocopy;
1934
1935 while (towrite > 0) {
1936 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1937 towrite);
4e46a023 1938retry:
0abd675e
CY		 1939 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1940 &page, NULL);
4e46a023
JK		 1941 if (unlikely(err)) {
1942 if (err == -ENOMEM) {
5df7731f
CY		 1943 congestion_wait(BLK_RW_ASYNC,
1944 DEFAULT_IO_TIMEOUT);
4e46a023
JK		 1945 goto retry;
1946 }
af033b2a 1947 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1948 break;
4e46a023 1949 }
0abd675e
CY		 1950
1951 kaddr = kmap_atomic(page);
1952 memcpy(kaddr + offset, data, tocopy);
1953 kunmap_atomic(kaddr);
1954 flush_dcache_page(page);
1955
1956 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1957 page, NULL);
1958 offset = 0;
1959 towrite -= tocopy;
1960 off += tocopy;
1961 data += tocopy;
1962 cond_resched();
1963 }
1964
1965 if (len == towrite)
6e5b5d41 1966 return err;
0abd675e
CY		 1967 inode->i_mtime = inode->i_ctime = current_time(inode);
1968 f2fs_mark_inode_dirty_sync(inode, false);
1969 return len - towrite;
1970}
1971
1972static struct dquot **f2fs_get_dquots(struct inode *inode)
1973{
1974 return F2FS_I(inode)->i_dquot;
1975}
1976
1977static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1978{
1979 return &F2FS_I(inode)->i_reserved_quota;
1980}
1981
4b2414d0
CY		 1982static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1983{
af033b2a 1984 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1985 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
af033b2a
CY		 1986 return 0;
1987 }
1988
63189b78
CY		 1989 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1990 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1991}
1992
ea676733 1993int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1994{
ea676733
JK		 1995 int enabled = 0;
1996 int i, err;
1997
7beb01f7 1998 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 1999 err = f2fs_enable_quotas(sbi->sb);
2000 if (err) {
dcbb4c10 2001 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
ea676733
JK		 2002 return 0;
2003 }
2004 return 1;
2005 }
4b2414d0
CY		 2006
2007 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 2008 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 2009 err = f2fs_quota_on_mount(sbi, i);
2010 if (!err) {
2011 enabled = 1;
2012 continue;
2013 }
dcbb4c10
JP		 2014 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2015 err, i);
4b2414d0
CY		 2016 }
2017 }
ea676733
JK		 2018 return enabled;
2019}
2020
2021static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2022 unsigned int flags)
2023{
2024 struct inode *qf_inode;
2025 unsigned long qf_inum;
2026 int err;
2027
7beb01f7 2028 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 2029
2030 qf_inum = f2fs_qf_ino(sb, type);
2031 if (!qf_inum)
2032 return -EPERM;
2033
2034 qf_inode = f2fs_iget(sb, qf_inum);
2035 if (IS_ERR(qf_inode)) {
dcbb4c10 2036 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
ea676733
JK		 2037 return PTR_ERR(qf_inode);
2038 }
2039
2040 /* Don't account quota for quota files to avoid recursion */
2041 qf_inode->i_flags |= S_NOQUOTA;
7212b95e 2042 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
ea676733
JK		 2043 iput(qf_inode);
2044 return err;
2045}
2046
2047static int f2fs_enable_quotas(struct super_block *sb)
2048{
dcbb4c10 2049 struct f2fs_sb_info *sbi = F2FS_SB(sb);
ea676733
JK		 2050 int type, err = 0;
2051 unsigned long qf_inum;
2052 bool quota_mopt[MAXQUOTAS] = {
dcbb4c10
JP		 2053 test_opt(sbi, USRQUOTA),
2054 test_opt(sbi, GRPQUOTA),
2055 test_opt(sbi, PRJQUOTA),
ea676733
JK		 2056 };
2057
af033b2a 2058 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 2059 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
af033b2a
CY		 2060 return 0;
2061 }
2062
2063 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2064
ea676733
JK		 2065 for (type = 0; type < MAXQUOTAS; type++) {
2066 qf_inum = f2fs_qf_ino(sb, type);
2067 if (qf_inum) {
2068 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2069 DQUOT_USAGE_ENABLED |
2070 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2071 if (err) {
dcbb4c10
JP		 2072 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2073 type, err);
ea676733
JK		 2074 for (type--; type >= 0; type--)
2075 dquot_quota_off(sb, type);
af033b2a
CY		 2076 set_sbi_flag(F2FS_SB(sb),
2077 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 2078 return err;
2079 }
4b2414d0
CY		 2080 }
2081 }
ea676733 2082 return 0;
4b2414d0
CY		 2083}
2084
af033b2a 2085int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 2086{
af033b2a 2087 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 2088 struct quota_info *dqopt = sb_dqopt(sb);
2089 int cnt;
2090 int ret;
2091
db6ec53b
JK		 2092 /*
2093 * do_quotactl
2094 * f2fs_quota_sync
2095 * down_read(quota_sem)
2096 * dquot_writeback_dquots()
2097 * f2fs_dquot_commit
2098 * block_operation
2099 * down_read(quota_sem)
2100 */
2101 f2fs_lock_op(sbi);
2102
2103 down_read(&sbi->quota_sem);
0abd675e
CY		 2104 ret = dquot_writeback_dquots(sb, type);
2105 if (ret)
af033b2a 2106 goto out;
0abd675e
CY		 2107
2108 /*
2109 * Now when everything is written we can discard the pagecache so
2110 * that userspace sees the changes.
2111 */
2112 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 2113 struct address_space *mapping;
2114
0abd675e
CY		 2115 if (type != -1 && cnt != type)
2116 continue;
2117 if (!sb_has_quota_active(sb, cnt))
2118 continue;
2119
af033b2a
CY		 2120 mapping = dqopt->files[cnt]->i_mapping;
2121
2122 ret = filemap_fdatawrite(mapping);
0abd675e 2123 if (ret)
af033b2a
CY		 2124 goto out;
2125
2126 /* if we are using journalled quota */
2127 if (is_journalled_quota(sbi))
2128 continue;
2129
2130 ret = filemap_fdatawait(mapping);
2131 if (ret)
2132 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 2133
2134 inode_lock(dqopt->files[cnt]);
2135 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
2136 inode_unlock(dqopt->files[cnt]);
2137 }
af033b2a
CY		 2138out:
2139 if (ret)
2140 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
db6ec53b
JK		 2141 up_read(&sbi->quota_sem);
2142 f2fs_unlock_op(sbi);
af033b2a 2143 return ret;
0abd675e
CY		 2144}
2145
2146static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2147 const struct path *path)
2148{
2149 struct inode *inode;
2150 int err;
2151
fe973b06
CY		 2152 /* if quota sysfile exists, deny enabling quota with specific file */
2153 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2154 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2155 return -EBUSY;
2156 }
2157
9a20d391 2158 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 2159 if (err)
2160 return err;
2161
2162 err = dquot_quota_on(sb, type, format_id, path);
2163 if (err)
2164 return err;
2165
2166 inode = d_inode(path->dentry);
2167
2168 inode_lock(inode);
59c84408 2169 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 2170 f2fs_set_inode_flags(inode);
0abd675e
CY		 2171 inode_unlock(inode);
2172 f2fs_mark_inode_dirty_sync(inode, false);
2173
2174 return 0;
2175}
2176
fe973b06 2177static int __f2fs_quota_off(struct super_block *sb, int type)
0abd675e
CY		 2178{
2179 struct inode *inode = sb_dqopt(sb)->files[type];
2180 int err;
2181
2182 if (!inode || !igrab(inode))
2183 return dquot_quota_off(sb, type);
2184
cda9cc59
YH		 2185 err = f2fs_quota_sync(sb, type);
2186 if (err)
2187 goto out_put;
0abd675e
CY		 2188
2189 err = dquot_quota_off(sb, type);
7beb01f7 2190 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2191 goto out_put;
2192
2193 inode_lock(inode);
59c84408 2194 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2195 f2fs_set_inode_flags(inode);
0abd675e
CY		 2196 inode_unlock(inode);
2197 f2fs_mark_inode_dirty_sync(inode, false);
2198out_put:
2199 iput(inode);
2200 return err;
2201}
2202
fe973b06
CY		 2203static int f2fs_quota_off(struct super_block *sb, int type)
2204{
2205 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2206 int err;
2207
2208 err = __f2fs_quota_off(sb, type);
2209
2210 /*
2211 * quotactl can shutdown journalled quota, result in inconsistence
2212 * between quota record and fs data by following updates, tag the
2213 * flag to let fsck be aware of it.
2214 */
2215 if (is_journalled_quota(sbi))
2216 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2217 return err;
2218}
2219
4b2414d0 2220void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2221{
2222 int type;
cda9cc59
YH		 2223 int err;
2224
2225 for (type = 0; type < MAXQUOTAS; type++) {
fe973b06 2226 err = __f2fs_quota_off(sb, type);
cda9cc59
YH		 2227 if (err) {
2228 int ret = dquot_quota_off(sb, type);
0abd675e 2229
dcbb4c10
JP		 2230 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2231 type, err, ret);
af033b2a 2232 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2233 }
2234 }
0e0667b6
JK		 2235 /*
2236 * In case of checkpoint=disable, we must flush quota blocks.
2237 * This can cause NULL exception for node_inode in end_io, since
2238 * put_super already dropped it.
2239 */
2240 sync_filesystem(sb);
0abd675e
CY		 2241}
2242
26b5a079
SY		 2243static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2244{
2245 struct quota_info *dqopt = sb_dqopt(sb);
2246 int type;
2247
2248 for (type = 0; type < MAXQUOTAS; type++) {
2249 if (!dqopt->files[type])
2250 continue;
2251 f2fs_inode_synced(dqopt->files[type]);
2252 }
2253}
2254
af033b2a
CY		 2255static int f2fs_dquot_commit(struct dquot *dquot)
2256{
db6ec53b 2257 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2258 int ret;
2259
2c4e0c52 2260 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
af033b2a
CY		 2261 ret = dquot_commit(dquot);
2262 if (ret < 0)
db6ec53b
JK		 2263 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2264 up_read(&sbi->quota_sem);
af033b2a
CY		 2265 return ret;
2266}
2267
2268static int f2fs_dquot_acquire(struct dquot *dquot)
2269{
db6ec53b 2270 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2271 int ret;
2272
db6ec53b 2273 down_read(&sbi->quota_sem);
af033b2a
CY		 2274 ret = dquot_acquire(dquot);
2275 if (ret < 0)
db6ec53b
JK		 2276 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2277 up_read(&sbi->quota_sem);
af033b2a
CY		 2278 return ret;
2279}
2280
2281static int f2fs_dquot_release(struct dquot *dquot)
2282{
db6ec53b 2283 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2c4e0c52 2284 int ret = dquot_release(dquot);
af033b2a 2285
af033b2a 2286 if (ret < 0)
db6ec53b 2287 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2288 return ret;
2289}
2290
2291static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2292{
2293 struct super_block *sb = dquot->dq_sb;
2294 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2295 int ret = dquot_mark_dquot_dirty(dquot);
af033b2a
CY		 2296
2297 /* if we are using journalled quota */
2298 if (is_journalled_quota(sbi))
2299 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2300
2301 return ret;
2302}
2303
2304static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2305{
db6ec53b 2306 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2307 int ret = dquot_commit_info(sb, type);
af033b2a 2308
af033b2a 2309 if (ret < 0)
db6ec53b 2310 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2311 return ret;
2312}
26b5a079 2313
94b1e10e 2314static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2315{
2316 *projid = F2FS_I(inode)->i_projid;
2317 return 0;
2318}
2319
0abd675e
CY		 2320static const struct dquot_operations f2fs_quota_operations = {
2321 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2322 .write_dquot = f2fs_dquot_commit,
2323 .acquire_dquot = f2fs_dquot_acquire,
2324 .release_dquot = f2fs_dquot_release,
2325 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2326 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2327 .alloc_dquot = dquot_alloc,
2328 .destroy_dquot = dquot_destroy,
5c57132e 2329 .get_projid = f2fs_get_projid,
0abd675e
CY		 2330 .get_next_id = dquot_get_next_id,
2331};
2332
2333static const struct quotactl_ops f2fs_quotactl_ops = {
2334 .quota_on = f2fs_quota_on,
2335 .quota_off = f2fs_quota_off,
2336 .quota_sync = f2fs_quota_sync,
2337 .get_state = dquot_get_state,
2338 .set_info = dquot_set_dqinfo,
2339 .get_dqblk = dquot_get_dqblk,
2340 .set_dqblk = dquot_set_dqblk,
2341 .get_nextdqblk = dquot_get_next_dqblk,
2342};
2343#else
af033b2a
CY		 2344int f2fs_quota_sync(struct super_block *sb, int type)
2345{
2346 return 0;
2347}
2348
4b2414d0 2349void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2350{
2351}
2352#endif
2353
f62fc9f9 2354static const struct super_operations f2fs_sops = {
aff063e2 2355 .alloc_inode = f2fs_alloc_inode,
d01718a0 2356 .free_inode = f2fs_free_inode,
531ad7d5 2357 .drop_inode = f2fs_drop_inode,
aff063e2 2358 .write_inode = f2fs_write_inode,
b3783873 2359 .dirty_inode = f2fs_dirty_inode,
aff063e2 2360 .show_options = f2fs_show_options,
0abd675e
CY		 2361#ifdef CONFIG_QUOTA
2362 .quota_read = f2fs_quota_read,
2363 .quota_write = f2fs_quota_write,
2364 .get_dquots = f2fs_get_dquots,
2365#endif
aff063e2
JK		 2366 .evict_inode = f2fs_evict_inode,
2367 .put_super = f2fs_put_super,
2368 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2369 .freeze_fs = f2fs_freeze,
2370 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2371 .statfs = f2fs_statfs,
696c018c 2372 .remount_fs = f2fs_remount,
aff063e2
JK		 2373};
2374
643fa961 2375#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 2376static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2377{
2378 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2379 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2380 ctx, len, NULL);
2381}
2382
2383static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2384 void *fs_data)
2385{
b7c409de
SY		 2386 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2387
2388 /*
2389 * Encrypting the root directory is not allowed because fsck
2390 * expects lost+found directory to exist and remain unencrypted
2391 * if LOST_FOUND feature is enabled.
2392 *
2393 */
7beb01f7 2394 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2395 inode->i_ino == F2FS_ROOT_INO(sbi))
2396 return -EPERM;
2397
0b81d077
JK		 2398 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2399 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2400 ctx, len, fs_data, XATTR_CREATE);
2401}
2402
ff62af20
SY		 2403static bool f2fs_dummy_context(struct inode *inode)
2404{
2405 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2406}
2407
0eee17e3
EB		 2408static bool f2fs_has_stable_inodes(struct super_block *sb)
2409{
2410 return true;
2411}
2412
2413static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
2414 int *ino_bits_ret, int *lblk_bits_ret)
2415{
2416 *ino_bits_ret = 8 * sizeof(nid_t);
2417 *lblk_bits_ret = 8 * sizeof(block_t);
2418}
2419
6f69f0ed 2420static const struct fscrypt_operations f2fs_cryptops = {
0eee17e3
EB		 2421 .key_prefix = "f2fs:",
2422 .get_context = f2fs_get_context,
2423 .set_context = f2fs_set_context,
2424 .dummy_context = f2fs_dummy_context,
2425 .empty_dir = f2fs_empty_dir,
2426 .max_namelen = F2FS_NAME_LEN,
2427 .has_stable_inodes = f2fs_has_stable_inodes,
2428 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
0b81d077 2429};
0b81d077
JK		 2430#endif
2431
aff063e2
JK		 2432static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2433 u64 ino, u32 generation)
2434{
2435 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2436 struct inode *inode;
2437
4d57b86d 2438 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2439 return ERR_PTR(-ESTALE);
aff063e2
JK		 2440
2441 /*
2442 * f2fs_iget isn't quite right if the inode is currently unallocated!
2443 * However f2fs_iget currently does appropriate checks to handle stale
2444 * inodes so everything is OK.
2445 */
2446 inode = f2fs_iget(sb, ino);
2447 if (IS_ERR(inode))
2448 return ERR_CAST(inode);
6bacf52f 2449 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2450 /* we didn't find the right inode.. */
2451 iput(inode);
2452 return ERR_PTR(-ESTALE);
2453 }
2454 return inode;
2455}
2456
2457static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2458 int fh_len, int fh_type)
2459{
2460 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2461 f2fs_nfs_get_inode);
2462}
2463
2464static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2465 int fh_len, int fh_type)
2466{
2467 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2468 f2fs_nfs_get_inode);
2469}
2470
2471static const struct export_operations f2fs_export_ops = {
2472 .fh_to_dentry = f2fs_fh_to_dentry,
2473 .fh_to_parent = f2fs_fh_to_parent,
2474 .get_parent = f2fs_get_parent,
2475};
2476
e0afc4d6 2477static loff_t max_file_blocks(void)
aff063e2 2478{
7a2af766 2479 loff_t result = 0;
d02a6e61 2480 loff_t leaf_count = DEF_ADDRS_PER_BLOCK;
aff063e2 2481
7a2af766
CY		 2482 /*
2483 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2484 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2485 * space in inode.i_addr, it will be more safe to reassign
2486 * result as zero.
2487 */
2488
aff063e2
JK		 2489 /* two direct node blocks */
2490 result += (leaf_count * 2);
2491
2492 /* two indirect node blocks */
2493 leaf_count *= NIDS_PER_BLOCK;
2494 result += (leaf_count * 2);
2495
2496 /* one double indirect node block */
2497 leaf_count *= NIDS_PER_BLOCK;
2498 result += leaf_count;
2499
aff063e2
JK		 2500 return result;
2501}
2502
fd694733
JK		 2503static int __f2fs_commit_super(struct buffer_head *bh,
2504 struct f2fs_super_block *super)
2505{
2506 lock_buffer(bh);
2507 if (super)
2508 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2509 set_buffer_dirty(bh);
2510 unlock_buffer(bh);
2511
2512 /* it's rare case, we can do fua all the time */
3adc5fcb 2513 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2514}
2515
df728b0f 2516static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2517 struct buffer_head *bh)
9a59b62f 2518{
fd694733
JK		 2519 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2520 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2521 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2522 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2523 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2524 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2525 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2526 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2527 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2528 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2529 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2530 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2531 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2532 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2533 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2534 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2535 u64 main_end_blkaddr = main_blkaddr +
2536 (segment_count_main << log_blocks_per_seg);
2537 u64 seg_end_blkaddr = segment0_blkaddr +
2538 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2539
2540 if (segment0_blkaddr != cp_blkaddr) {
dcbb4c10
JP		 2541 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2542 segment0_blkaddr, cp_blkaddr);
9a59b62f
CY		 2543 return true;
2544 }
2545
2546 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2547 sit_blkaddr) {
dcbb4c10
JP		 2548 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2549 cp_blkaddr, sit_blkaddr,
2550 segment_count_ckpt << log_blocks_per_seg);
9a59b62f
CY		 2551 return true;
2552 }
2553
2554 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2555 nat_blkaddr) {
dcbb4c10
JP		 2556 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2557 sit_blkaddr, nat_blkaddr,
2558 segment_count_sit << log_blocks_per_seg);
9a59b62f
CY		 2559 return true;
2560 }
2561
2562 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2563 ssa_blkaddr) {
dcbb4c10
JP		 2564 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2565 nat_blkaddr, ssa_blkaddr,
2566 segment_count_nat << log_blocks_per_seg);
9a59b62f
CY		 2567 return true;
2568 }
2569
2570 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2571 main_blkaddr) {
dcbb4c10
JP		 2572 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2573 ssa_blkaddr, main_blkaddr,
2574 segment_count_ssa << log_blocks_per_seg);
9a59b62f
CY		 2575 return true;
2576 }
2577
fd694733 2578 if (main_end_blkaddr > seg_end_blkaddr) {
dcbb4c10
JP		 2579 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2580 main_blkaddr,
2581 segment0_blkaddr +
2582 (segment_count << log_blocks_per_seg),
2583 segment_count_main << log_blocks_per_seg);
9a59b62f 2584 return true;
fd694733
JK		 2585 } else if (main_end_blkaddr < seg_end_blkaddr) {
2586 int err = 0;
2587 char *res;
2588
2589 /* fix in-memory information all the time */
2590 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2591 segment0_blkaddr) >> log_blocks_per_seg);
2592
2593 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2594 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2595 res = "internally";
2596 } else {
2597 err = __f2fs_commit_super(bh, NULL);
2598 res = err ? "failed" : "done";
2599 }
dcbb4c10
JP		 2600 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2601 res, main_blkaddr,
2602 segment0_blkaddr +
2603 (segment_count << log_blocks_per_seg),
2604 segment_count_main << log_blocks_per_seg);
fd694733
JK		 2605 if (err)
2606 return true;
9a59b62f 2607 }
9a59b62f
CY		 2608 return false;
2609}
2610
df728b0f 2611static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2612 struct buffer_head *bh)
aff063e2 2613{
0cfe75c5
JK		 2614 block_t segment_count, segs_per_sec, secs_per_zone;
2615 block_t total_sections, blocks_per_seg;
fd694733
JK		 2616 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2617 (bh->b_data + F2FS_SUPER_OFFSET);
aff063e2 2618 unsigned int blocksize;
d440c52d
JZ		 2619 size_t crc_offset = 0;
2620 __u32 crc = 0;
2621
38fb6d0e
IZ		 2622 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2623 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2624 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2625 return -EINVAL;
2626 }
2627
d440c52d 2628 /* Check checksum_offset and crc in superblock */
7beb01f7 2629 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2630 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2631 if (crc_offset !=
2632 offsetof(struct f2fs_super_block, crc)) {
dcbb4c10
JP		 2633 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2634 crc_offset);
38fb6d0e 2635 return -EFSCORRUPTED;
d440c52d
JZ		 2636 }
2637 crc = le32_to_cpu(raw_super->crc);
2638 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
dcbb4c10 2639 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
38fb6d0e 2640 return -EFSCORRUPTED;
d440c52d
JZ		 2641 }
2642 }
aff063e2 2643
5c9b4692 2644 /* Currently, support only 4KB page cache size */
09cbfeaf 2645 if (F2FS_BLKSIZE != PAGE_SIZE) {
dcbb4c10
JP		 2646 f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
2647 PAGE_SIZE);
38fb6d0e 2648 return -EFSCORRUPTED;
5c9b4692 2649 }
2650
aff063e2
JK		 2651 /* Currently, support only 4KB block size */
2652 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2653 if (blocksize != F2FS_BLKSIZE) {
dcbb4c10
JP		 2654 f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
2655 blocksize);
38fb6d0e 2656 return -EFSCORRUPTED;
a07ef784 2657 }
5c9b4692 2658
9a59b62f
CY		 2659 /* check log blocks per segment */
2660 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
dcbb4c10
JP		 2661 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2662 le32_to_cpu(raw_super->log_blocks_per_seg));
38fb6d0e 2663 return -EFSCORRUPTED;
9a59b62f
CY		 2664 }
2665
55cf9cb6
CY		 2666 /* Currently, support 512/1024/2048/4096 bytes sector size */
2667 if (le32_to_cpu(raw_super->log_sectorsize) >
2668 F2FS_MAX_LOG_SECTOR_SIZE ||
2669 le32_to_cpu(raw_super->log_sectorsize) <
2670 F2FS_MIN_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2671 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2672 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2673 return -EFSCORRUPTED;
a07ef784 2674 }
55cf9cb6
CY		 2675 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2676 le32_to_cpu(raw_super->log_sectorsize) !=
2677 F2FS_MAX_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2678 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
2679 le32_to_cpu(raw_super->log_sectors_per_block),
2680 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2681 return -EFSCORRUPTED;
a07ef784 2682 }
9a59b62f 2683
0cfe75c5
JK		 2684 segment_count = le32_to_cpu(raw_super->segment_count);
2685 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2686 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2687 total_sections = le32_to_cpu(raw_super->section_count);
2688
2689 /* blocks_per_seg should be 512, given the above check */
2690 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2691
2692 if (segment_count > F2FS_MAX_SEGMENT ||
2693 segment_count < F2FS_MIN_SEGMENTS) {
dcbb4c10 2694 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
38fb6d0e 2695 return -EFSCORRUPTED;
0cfe75c5
JK		 2696 }
2697
2698 if (total_sections > segment_count ||
2699 total_sections < F2FS_MIN_SEGMENTS ||
2700 segs_per_sec > segment_count || !segs_per_sec) {
dcbb4c10
JP		 2701 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
2702 segment_count, total_sections, segs_per_sec);
38fb6d0e 2703 return -EFSCORRUPTED;
0cfe75c5
JK		 2704 }
2705
2706 if ((segment_count / segs_per_sec) < total_sections) {
dcbb4c10
JP		 2707 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
2708 segment_count, segs_per_sec, total_sections);
38fb6d0e 2709 return -EFSCORRUPTED;
0cfe75c5
JK		 2710 }
2711
88960068 2712 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
dcbb4c10
JP		 2713 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
2714 segment_count, le64_to_cpu(raw_super->block_count));
38fb6d0e 2715 return -EFSCORRUPTED;
0cfe75c5
JK		 2716 }
2717
9f701f6c
QS		 2718 if (RDEV(0).path[0]) {
2719 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
2720 int i = 1;
2721
2722 while (i < MAX_DEVICES && RDEV(i).path[0]) {
2723 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
2724 i++;
2725 }
2726 if (segment_count != dev_seg_count) {
2727 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
2728 segment_count, dev_seg_count);
2729 return -EFSCORRUPTED;
2730 }
2731 }
2732
42bf546c 2733 if (secs_per_zone > total_sections || !secs_per_zone) {
dcbb4c10
JP		 2734 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
2735 secs_per_zone, total_sections);
38fb6d0e 2736 return -EFSCORRUPTED;
0cfe75c5
JK		 2737 }
2738 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2739 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2740 (le32_to_cpu(raw_super->extension_count) +
2741 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
dcbb4c10
JP		 2742 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
2743 le32_to_cpu(raw_super->extension_count),
2744 raw_super->hot_ext_count,
2745 F2FS_MAX_EXTENSION);
38fb6d0e 2746 return -EFSCORRUPTED;
0cfe75c5
JK		 2747 }
2748
2749 if (le32_to_cpu(raw_super->cp_payload) >
2750 (blocks_per_seg - F2FS_CP_PACKS)) {
dcbb4c10
JP		 2751 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
2752 le32_to_cpu(raw_super->cp_payload),
2753 blocks_per_seg - F2FS_CP_PACKS);
38fb6d0e 2754 return -EFSCORRUPTED;
0cfe75c5
JK		 2755 }
2756
9a59b62f
CY		 2757 /* check reserved ino info */
2758 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2759 le32_to_cpu(raw_super->meta_ino) != 2 ||
2760 le32_to_cpu(raw_super->root_ino) != 3) {
dcbb4c10
JP		 2761 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2762 le32_to_cpu(raw_super->node_ino),
2763 le32_to_cpu(raw_super->meta_ino),
2764 le32_to_cpu(raw_super->root_ino));
38fb6d0e 2765 return -EFSCORRUPTED;
9a59b62f
CY		 2766 }
2767
2768 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2769 if (sanity_check_area_boundary(sbi, bh))
38fb6d0e 2770 return -EFSCORRUPTED;
9a59b62f 2771
aff063e2
JK		 2772 return 0;
2773}
2774
4d57b86d 2775int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2776{
2777 unsigned int total, fsmeta;
577e3495
JK		 2778 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2779 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2780 unsigned int ovp_segments, reserved_segments;
15d3042a 2781 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2782 unsigned int sit_segs, nat_segs;
2783 unsigned int sit_bitmap_size, nat_bitmap_size;
2784 unsigned int log_blocks_per_seg;
9dc956b2 2785 unsigned int segment_count_main;
e494c2f9 2786 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 2787 block_t user_block_count, valid_user_blocks;
2788 block_t avail_node_count, valid_node_count;
042be0f8 2789 int i, j;
aff063e2
JK		 2790
2791 total = le32_to_cpu(raw_super->segment_count);
2792 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2793 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2794 fsmeta += sit_segs;
2795 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2796 fsmeta += nat_segs;
aff063e2
JK		 2797 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2798 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2799
6bacf52f 2800 if (unlikely(fsmeta >= total))
aff063e2 2801 return 1;
577e3495 2802
2040fce8
JK		 2803 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2804 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2805
2806 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2807 ovp_segments == 0 || reserved_segments == 0)) {
dcbb4c10 2808 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2040fce8
JK		 2809 return 1;
2810 }
2811
9dc956b2
CY		 2812 user_block_count = le64_to_cpu(ckpt->user_block_count);
2813 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2814 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2815 if (!user_block_count || user_block_count >=
2816 segment_count_main << log_blocks_per_seg) {
dcbb4c10
JP		 2817 f2fs_err(sbi, "Wrong user_block_count: %u",
2818 user_block_count);
9dc956b2
CY		 2819 return 1;
2820 }
2821
7b63f72f
CY		 2822 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2823 if (valid_user_blocks > user_block_count) {
dcbb4c10
JP		 2824 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
2825 valid_user_blocks, user_block_count);
7b63f72f
CY		 2826 return 1;
2827 }
2828
2829 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
27cae0bc 2830 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
7b63f72f 2831 if (valid_node_count > avail_node_count) {
dcbb4c10
JP		 2832 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
2833 valid_node_count, avail_node_count);
7b63f72f
CY		 2834 return 1;
2835 }
2836
15d3042a
JQ		 2837 main_segs = le32_to_cpu(raw_super->segment_count_main);
2838 blocks_per_seg = sbi->blocks_per_seg;
2839
2840 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2841 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2842 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2843 return 1;
042be0f8
CY		 2844 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2845 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2846 le32_to_cpu(ckpt->cur_node_segno[j])) {
dcbb4c10
JP		 2847 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
2848 i, j,
2849 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2850 return 1;
2851 }
2852 }
15d3042a
JQ		 2853 }
2854 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2855 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2856 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2857 return 1;
042be0f8
CY		 2858 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2859 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2860 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2861 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
2862 i, j,
2863 le32_to_cpu(ckpt->cur_data_segno[i]));
042be0f8
CY		 2864 return 1;
2865 }
2866 }
2867 }
2868 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1166c1f2 2869 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
042be0f8
CY		 2870 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2871 le32_to_cpu(ckpt->cur_data_segno[j])) {
1166c1f2 2872 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
dcbb4c10
JP		 2873 i, j,
2874 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2875 return 1;
2876 }
2877 }
15d3042a
JQ		 2878 }
2879
c77ec61c
CY		 2880 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2881 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2882
2883 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2884 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
dcbb4c10
JP		 2885 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
2886 sit_bitmap_size, nat_bitmap_size);
c77ec61c
CY		 2887 return 1;
2888 }
e494c2f9
CY		 2889
2890 cp_pack_start_sum = __start_sum_addr(sbi);
2891 cp_payload = __cp_payload(sbi);
2892 if (cp_pack_start_sum < cp_payload + 1 ||
2893 cp_pack_start_sum > blocks_per_seg - 1 -
2894 NR_CURSEG_TYPE) {
dcbb4c10
JP		 2895 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
2896 cp_pack_start_sum);
e494c2f9
CY		 2897 return 1;
2898 }
c77ec61c 2899
5dae2d39
CY		 2900 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
2901 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2d008835
CY		 2902 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
2903 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
2904 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
dcbb4c10 2905 le32_to_cpu(ckpt->checksum_offset));
5dae2d39
CY		 2906 return 1;
2907 }
2908
1e968fdf 2909 if (unlikely(f2fs_cp_error(sbi))) {
dcbb4c10 2910 f2fs_err(sbi, "A bug case: need to run fsck");
577e3495
JK		 2911 return 1;
2912 }
aff063e2
JK		 2913 return 0;
2914}
2915
2916static void init_sb_info(struct f2fs_sb_info *sbi)
2917{
2918 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 2919 int i;
aff063e2
JK		 2920
2921 sbi->log_sectors_per_block =
2922 le32_to_cpu(raw_super->log_sectors_per_block);
2923 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2924 sbi->blocksize = 1 << sbi->log_blocksize;
2925 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2926 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2927 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2928 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2929 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2930 sbi->total_node_count =
2931 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2932 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2933 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2934 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2935 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2936 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 2937 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2938 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 2939 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 2940 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 2941
ab9fa662 2942 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2943 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2944 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2945 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2946 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2947 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 2948 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2949 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 2950 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2951
35782b23
JK		 2952 for (i = 0; i < NR_COUNT_TYPE; i++)
2953 atomic_set(&sbi->nr_pages[i], 0);
2954
c29fd0c0
CY		 2955 for (i = 0; i < META; i++)
2956 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2957
2658e50d
JK		 2958 INIT_LIST_HEAD(&sbi->s_list);
2959 mutex_init(&sbi->umount_mutex);
107a805d 2960 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2961 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2962
2963 sbi->dirty_device = 0;
2964 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2965
846ae671 2966 init_rwsem(&sbi->sb_lock);
f5a53edc 2967 init_rwsem(&sbi->pin_sem);
aff063e2
JK		 2968}
2969
523be8a6
JK		 2970static int init_percpu_info(struct f2fs_sb_info *sbi)
2971{
35782b23 2972 int err;
41382ec4 2973
513c5f37
JK		 2974 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2975 if (err)
2976 return err;
2977
4a70e255 2978 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2979 GFP_KERNEL);
4a70e255
CY		 2980 if (err)
2981 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2982
2983 return err;
523be8a6
JK		 2984}
2985
178053e2 2986#ifdef CONFIG_BLK_DEV_ZONED
d4100351
CH		 2987static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
2988 void *data)
2989{
2990 struct f2fs_dev_info *dev = data;
2991
2992 if (zone->type != BLK_ZONE_TYPE_CONVENTIONAL)
2993 set_bit(idx, dev->blkz_seq);
2994 return 0;
2995}
2996
3c62be17 2997static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2998{
3c62be17 2999 struct block_device *bdev = FDEV(devi).bdev;
178053e2 3000 sector_t nr_sectors = bdev->bd_part->nr_sects;
d4100351 3001 int ret;
178053e2 3002
7beb01f7 3003 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 3004 return 0;
3005
3c62be17 3006 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 3007 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 3008 return -EINVAL;
f99e8648 3009 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 3010 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3011 __ilog2_u32(sbi->blocks_per_blkz))
3012 return -EINVAL;
178053e2 3013 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 3014 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3015 sbi->log_blocks_per_blkz;
f99e8648 3016 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 3017 FDEV(devi).nr_blkz++;
178053e2 3018
95175daf
DLM		 3019 FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
3020 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3021 * sizeof(unsigned long),
3022 GFP_KERNEL);
3023 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 3024 return -ENOMEM;
3025
178053e2 3026 /* Get block zones type */
d4100351
CH		 3027 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3028 &FDEV(devi));
3029 if (ret < 0)
3030 return ret;
178053e2 3031
d4100351 3032 return 0;
178053e2
DLM		 3033}
3034#endif
3035
9076a75f
GZ		 3036/*
3037 * Read f2fs raw super block.
2b39e907
SL		 3038 * Because we have two copies of super block, so read both of them
3039 * to get the first valid one. If any one of them is broken, we pass
3040 * them recovery flag back to the caller.
9076a75f 3041 */
df728b0f 3042static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 3043 struct f2fs_super_block **raw_super,
e8240f65 3044 int *valid_super_block, int *recovery)
14d7e9de 3045{
df728b0f 3046 struct super_block *sb = sbi->sb;
2b39e907 3047 int block;
e8240f65 3048 struct buffer_head *bh;
fd694733 3049 struct f2fs_super_block *super;
da554e48 3050 int err = 0;
14d7e9de 3051
b39f0de2
YH		 3052 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3053 if (!super)
3054 return -ENOMEM;
2b39e907
SL		 3055
3056 for (block = 0; block < 2; block++) {
3057 bh = sb_bread(sb, block);
3058 if (!bh) {
dcbb4c10
JP		 3059 f2fs_err(sbi, "Unable to read %dth superblock",
3060 block + 1);
2b39e907 3061 err = -EIO;
ed352042 3062 *recovery = 1;
2b39e907
SL		 3063 continue;
3064 }
14d7e9de 3065
2b39e907 3066 /* sanity checking of raw super */
38fb6d0e
IZ		 3067 err = sanity_check_raw_super(sbi, bh);
3068 if (err) {
dcbb4c10
JP		 3069 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3070 block + 1);
2b39e907 3071 brelse(bh);
ed352042 3072 *recovery = 1;
2b39e907
SL		 3073 continue;
3074 }
14d7e9de 3075
2b39e907 3076 if (!*raw_super) {
fd694733
JK		 3077 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3078 sizeof(*super));
2b39e907
SL		 3079 *valid_super_block = block;
3080 *raw_super = super;
3081 }
3082 brelse(bh);
da554e48 3083 }
3084
da554e48 3085 /* No valid superblock */
2b39e907 3086 if (!*raw_super)
5222595d 3087 kvfree(super);
2b39e907
SL		 3088 else
3089 err = 0;
da554e48 3090
2b39e907 3091 return err;
14d7e9de 3092}
3093
fd694733 3094int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 3095{
5d909cdb 3096 struct buffer_head *bh;
d440c52d 3097 __u32 crc = 0;
26d815ad
JK		 3098 int err;
3099
df728b0f
JK		 3100 if ((recover && f2fs_readonly(sbi->sb)) ||
3101 bdev_read_only(sbi->sb->s_bdev)) {
3102 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 3103 return -EROFS;
df728b0f 3104 }
f2353d7b 3105
d440c52d 3106 /* we should update superblock crc here */
7beb01f7 3107 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 3108 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3109 offsetof(struct f2fs_super_block, crc));
3110 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3111 }
3112
fd694733 3113 /* write back-up superblock first */
0964fc1a 3114 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 3115 if (!bh)
3116 return -EIO;
fd694733 3117 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 3118 brelse(bh);
c5bda1c8
CY		 3119
3120 /* if we are in recovery path, skip writing valid superblock */
3121 if (recover || err)
5d909cdb 3122 return err;
26d815ad
JK		 3123
3124 /* write current valid superblock */
0964fc1a 3125 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 3126 if (!bh)
3127 return -EIO;
3128 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3129 brelse(bh);
3130 return err;
26d815ad
JK		 3131}
3132
3c62be17
JK		 3133static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3134{
3135 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 3136 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 3137 int i;
3138
7bb3a371
MS		 3139 /* Initialize single device information */
3140 if (!RDEV(0).path[0]) {
3141 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 3142 return 0;
7bb3a371
MS		 3143 max_devices = 1;
3144 }
3c62be17 3145
7bb3a371
MS		 3146 /*
3147 * Initialize multiple devices information, or single
3148 * zoned block device information.
3149 */
026f0507
KC		 3150 sbi->devs = f2fs_kzalloc(sbi,
3151 array_size(max_devices,
3152 sizeof(struct f2fs_dev_info)),
3153 GFP_KERNEL);
7bb3a371
MS		 3154 if (!sbi->devs)
3155 return -ENOMEM;
3c62be17 3156
7bb3a371 3157 for (i = 0; i < max_devices; i++) {
3c62be17 3158
7bb3a371
MS		 3159 if (i > 0 && !RDEV(i).path[0])
3160 break;
3161
3162 if (max_devices == 1) {
3163 /* Single zoned block device mount */
3164 FDEV(0).bdev =
3165 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 3166 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 3167 } else {
3168 /* Multi-device mount */
3169 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3170 FDEV(i).total_segments =
3171 le32_to_cpu(RDEV(i).total_segments);
3172 if (i == 0) {
3173 FDEV(i).start_blk = 0;
3174 FDEV(i).end_blk = FDEV(i).start_blk +
3175 (FDEV(i).total_segments <<
3176 sbi->log_blocks_per_seg) - 1 +
3177 le32_to_cpu(raw_super->segment0_blkaddr);
3178 } else {
3179 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3180 FDEV(i).end_blk = FDEV(i).start_blk +
3181 (FDEV(i).total_segments <<
3182 sbi->log_blocks_per_seg) - 1;
3183 }
3184 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 3185 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 3186 }
3c62be17
JK		 3187 if (IS_ERR(FDEV(i).bdev))
3188 return PTR_ERR(FDEV(i).bdev);
3189
3190 /* to release errored devices */
3191 sbi->s_ndevs = i + 1;
3192
3193#ifdef CONFIG_BLK_DEV_ZONED
3194 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3195 !f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3196 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3c62be17
JK		 3197 return -EINVAL;
3198 }
3199 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3200 if (init_blkz_info(sbi, i)) {
dcbb4c10 3201 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3c62be17
JK		 3202 return -EINVAL;
3203 }
7bb3a371
MS		 3204 if (max_devices == 1)
3205 break;
dcbb4c10
JP		 3206 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3207 i, FDEV(i).path,
3208 FDEV(i).total_segments,
3209 FDEV(i).start_blk, FDEV(i).end_blk,
3210 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3211 "Host-aware" : "Host-managed");
3c62be17
JK		 3212 continue;
3213 }
3214#endif
dcbb4c10
JP		 3215 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3216 i, FDEV(i).path,
3217 FDEV(i).total_segments,
3218 FDEV(i).start_blk, FDEV(i).end_blk);
3219 }
3220 f2fs_info(sbi,
3221 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3222 return 0;
3223}
3224
5aba5430
DR		 3225static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3226{
3227#ifdef CONFIG_UNICODE
3228 if (f2fs_sb_has_casefold(sbi) && !sbi->s_encoding) {
3229 const struct f2fs_sb_encodings *encoding_info;
3230 struct unicode_map *encoding;
3231 __u16 encoding_flags;
3232
3233 if (f2fs_sb_has_encrypt(sbi)) {
3234 f2fs_err(sbi,
3235 "Can't mount with encoding and encryption");
3236 return -EINVAL;
3237 }
3238
3239 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3240 &encoding_flags)) {
3241 f2fs_err(sbi,
3242 "Encoding requested by superblock is unknown");
3243 return -EINVAL;
3244 }
3245
3246 encoding = utf8_load(encoding_info->version);
3247 if (IS_ERR(encoding)) {
3248 f2fs_err(sbi,
3249 "can't mount with superblock charset: %s-%s "
3250 "not supported by the kernel. flags: 0x%x.",
3251 encoding_info->name, encoding_info->version,
3252 encoding_flags);
3253 return PTR_ERR(encoding);
3254 }
3255 f2fs_info(sbi, "Using encoding defined by superblock: "
3256 "%s-%s with flags 0x%hx", encoding_info->name,
3257 encoding_info->version?:"\b", encoding_flags);
3258
3259 sbi->s_encoding = encoding;
3260 sbi->s_encoding_flags = encoding_flags;
2c2eb7a3 3261 sbi->sb->s_d_op = &f2fs_dentry_ops;
5aba5430
DR		 3262 }
3263#else
3264 if (f2fs_sb_has_casefold(sbi)) {
3265 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3266 return -EINVAL;
3267 }
3268#endif
3269 return 0;
3270}
3271
84b89e5d
JK		 3272static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3273{
3274 struct f2fs_sm_info *sm_i = SM_I(sbi);
3275
3276 /* adjust parameters according to the volume size */
3277 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3278 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3279 sm_i->dcc_info->discard_granularity = 1;
3280 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3281 }
4cac90d5
CY		 3282
3283 sbi->readdir_ra = 1;
84b89e5d
JK		 3284}
3285
aff063e2
JK		 3286static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3287{
3288 struct f2fs_sb_info *sbi;
da554e48 3289 struct f2fs_super_block *raw_super;
aff063e2 3290 struct inode *root;
99e3e858 3291 int err;
aa2c8c43 3292 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3293 char *options = NULL;
e8240f65 3294 int recovery, i, valid_super_block;
8f1dbbbb 3295 struct curseg_info *seg_i;
aa2c8c43 3296 int retry_cnt = 1;
aff063e2 3297
ed2e621a 3298try_onemore:
da554e48 3299 err = -EINVAL;
3300 raw_super = NULL;
e8240f65 3301 valid_super_block = -1;
da554e48 3302 recovery = 0;
3303
aff063e2
JK		 3304 /* allocate memory for f2fs-specific super block info */
3305 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3306 if (!sbi)
3307 return -ENOMEM;
3308
df728b0f
JK		 3309 sbi->sb = sb;
3310
43b6573b
KM		 3311 /* Load the checksum driver */
3312 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3313 if (IS_ERR(sbi->s_chksum_driver)) {
dcbb4c10 3314 f2fs_err(sbi, "Cannot load crc32 driver.");
43b6573b
KM		 3315 err = PTR_ERR(sbi->s_chksum_driver);
3316 sbi->s_chksum_driver = NULL;
3317 goto free_sbi;
3318 }
3319
ff9234ad 3320 /* set a block size */
6bacf52f 3321 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
dcbb4c10 3322 f2fs_err(sbi, "unable to set blocksize");
aff063e2 3323 goto free_sbi;
a07ef784 3324 }
aff063e2 3325
df728b0f 3326 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3327 &recovery);
9076a75f
GZ		 3328 if (err)
3329 goto free_sbi;
3330
5fb08372 3331 sb->s_fs_info = sbi;
52763a4b
JK		 3332 sbi->raw_super = raw_super;
3333
704956ec 3334 /* precompute checksum seed for metadata */
7beb01f7 3335 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3336 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3337 sizeof(raw_super->uuid));
3338
d1b959c8
DLM		 3339 /*
3340 * The BLKZONED feature indicates that the drive was formatted with
3341 * zone alignment optimization. This is optional for host-aware
3342 * devices, but mandatory for host-managed zoned block devices.
3343 */
3344#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3345 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3346 f2fs_err(sbi, "Zoned block device support is not enabled");
1727f317 3347 err = -EOPNOTSUPP;
d1b959c8
DLM		 3348 goto free_sb_buf;
3349 }
d1b959c8 3350#endif
498c5e9f 3351 default_options(sbi);
aff063e2 3352 /* parse mount options */
dabc4a5c
JK		 3353 options = kstrdup((const char *)data, GFP_KERNEL);
3354 if (data && !options) {
3355 err = -ENOMEM;
aff063e2 3356 goto free_sb_buf;
dabc4a5c
JK		 3357 }
3358
3359 err = parse_options(sb, options);
3360 if (err)
3361 goto free_options;
aff063e2 3362
e0afc4d6
CY		 3363 sbi->max_file_blocks = max_file_blocks();
3364 sb->s_maxbytes = sbi->max_file_blocks <<
3365 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3366 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3367
5aba5430
DR		 3368 err = f2fs_setup_casefold(sbi);
3369 if (err)
3370 goto free_options;
3371
0abd675e
CY		 3372#ifdef CONFIG_QUOTA
3373 sb->dq_op = &f2fs_quota_operations;
bc88ac96 3374 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3375 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3376
7beb01f7 3377 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3378 for (i = 0; i < MAXQUOTAS; i++) {
3379 if (f2fs_qf_ino(sbi->sb, i))
3380 sbi->nquota_files++;
3381 }
3382 }
0abd675e
CY		 3383#endif
3384
aff063e2 3385 sb->s_op = &f2fs_sops;
643fa961 3386#ifdef CONFIG_FS_ENCRYPTION
0b81d077 3387 sb->s_cop = &f2fs_cryptops;
95ae251f
EB		 3388#endif
3389#ifdef CONFIG_FS_VERITY
3390 sb->s_vop = &f2fs_verityops;
ffcc4182 3391#endif
aff063e2
JK		 3392 sb->s_xattr = f2fs_xattr_handlers;
3393 sb->s_export_op = &f2fs_export_ops;
3394 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3395 sb->s_time_gran = 1;
1751e8a6
LT		 3396 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3397 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3398 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3399 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3400
3401 /* init f2fs-specific super block info */
e8240f65 3402 sbi->valid_super_block = valid_super_block;
fb24fea7 3403 init_rwsem(&sbi->gc_lock);
853137ce 3404 mutex_init(&sbi->writepages);
aff063e2 3405 mutex_init(&sbi->cp_mutex);
04f0b2ea 3406 mutex_init(&sbi->resize_mutex);
b3582c68 3407 init_rwsem(&sbi->node_write);
59c9081b 3408 init_rwsem(&sbi->node_change);
315df839
JK		 3409
3410 /* disallow all the data/node/meta page writes */
3411 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3412 spin_lock_init(&sbi->stat_lock);
971767ca 3413
b0af6d49
CY		 3414 /* init iostat info */
3415 spin_lock_init(&sbi->iostat_lock);
3416 sbi->iostat_enable = false;
3417
458e6197 3418 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3419 int n = (i == META) ? 1: NR_TEMP_TYPE;
3420 int j;
3421
c8606593
KC		 3422 sbi->write_io[i] =
3423 f2fs_kmalloc(sbi,
3424 array_size(n,
3425 sizeof(struct f2fs_bio_info)),
3426 GFP_KERNEL);
b63def91
CJ		 3427 if (!sbi->write_io[i]) {
3428 err = -ENOMEM;
0b2103e8 3429 goto free_bio_info;
b63def91 3430 }
a912b54d
JK		 3431
3432 for (j = HOT; j < n; j++) {
3433 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3434 sbi->write_io[i][j].sbi = sbi;
3435 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3436 spin_lock_init(&sbi->write_io[i][j].io_lock);
3437 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
0b20fcec
CY		 3438 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
3439 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
a912b54d 3440 }
458e6197 3441 }
971767ca 3442
b873b798 3443 init_rwsem(&sbi->cp_rwsem);
db6ec53b 3444 init_rwsem(&sbi->quota_sem);
fb51b5ef 3445 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3446 init_sb_info(sbi);
3447
523be8a6
JK		 3448 err = init_percpu_info(sbi);
3449 if (err)
d7997e63 3450 goto free_bio_info;
523be8a6 3451
c72db71e 3452 if (F2FS_IO_ALIGNED(sbi)) {
0a595eba 3453 sbi->write_io_dummy =
a3ebfe4f 3454 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3455 if (!sbi->write_io_dummy) {
3456 err = -ENOMEM;
d7997e63 3457 goto free_percpu;
1727f317 3458 }
0a595eba
JK		 3459 }
3460
aff063e2
JK		 3461 /* get an inode for meta space */
3462 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3463 if (IS_ERR(sbi->meta_inode)) {
dcbb4c10 3464 f2fs_err(sbi, "Failed to read F2FS meta data inode");
aff063e2 3465 err = PTR_ERR(sbi->meta_inode);
0a595eba 3466 goto free_io_dummy;
aff063e2
JK		 3467 }
3468
4d57b86d 3469 err = f2fs_get_valid_checkpoint(sbi);
a07ef784 3470 if (err) {
dcbb4c10 3471 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
aff063e2 3472 goto free_meta_inode;
a07ef784 3473 }
aff063e2 3474
af033b2a
CY		 3475 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3476 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3477 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3478 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3479 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3480 }
af033b2a 3481
04f0b2ea
QS		 3482 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3483 set_sbi_flag(sbi, SBI_NEED_FSCK);
3484
3c62be17
JK		 3485 /* Initialize device list */
3486 err = f2fs_scan_devices(sbi);
3487 if (err) {
dcbb4c10 3488 f2fs_err(sbi, "Failed to find devices");
3c62be17
JK		 3489 goto free_devices;
3490 }
3491
4c8ff709
CY		 3492 err = f2fs_init_post_read_wq(sbi);
3493 if (err) {
3494 f2fs_err(sbi, "Failed to initialize post read workqueue");
3495 goto free_devices;
3496 }
3497
aff063e2
JK		 3498 sbi->total_valid_node_count =
3499 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3500 percpu_counter_set(&sbi->total_valid_inode_count,
3501 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3502 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3503 sbi->total_valid_block_count =
3504 le64_to_cpu(sbi->ckpt->valid_block_count);
3505 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3506 sbi->reserved_blocks = 0;
80d42145 3507 sbi->current_reserved_blocks = 0;
7e65be49 3508 limit_reserve_root(sbi);
41382ec4 3509
c227f912
CY		 3510 for (i = 0; i < NR_INODE_TYPE; i++) {
3511 INIT_LIST_HEAD(&sbi->inode_list[i]);
3512 spin_lock_init(&sbi->inode_lock[i]);
3513 }
040d2bb3 3514 mutex_init(&sbi->flush_lock);
aff063e2 3515
4d57b86d 3516 f2fs_init_extent_cache_info(sbi);
1dcc336b 3517
4d57b86d 3518 f2fs_init_ino_entry_info(sbi);
aff063e2 3519
50fa53ec
CY		 3520 f2fs_init_fsync_node_info(sbi);
3521
aff063e2 3522 /* setup f2fs internal modules */
4d57b86d 3523 err = f2fs_build_segment_manager(sbi);
a07ef784 3524 if (err) {
dcbb4c10
JP		 3525 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3526 err);
aff063e2 3527 goto free_sm;
a07ef784 3528 }
4d57b86d 3529 err = f2fs_build_node_manager(sbi);
a07ef784 3530 if (err) {
dcbb4c10
JP		 3531 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3532 err);
aff063e2 3533 goto free_nm;
a07ef784 3534 }
aff063e2 3535
8f1dbbbb
SL		 3536 /* For write statistics */
3537 if (sb->s_bdev->bd_part)
3538 sbi->sectors_written_start =
dbae2c55
MC		 3539 (u64)part_stat_read(sb->s_bdev->bd_part,
3540 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3541
3542 /* Read accumulated write IO statistics if exists */
3543 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3544 if (__exist_node_summaries(sbi))
3545 sbi->kbytes_written =
b2dde6fc 3546 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3547
4d57b86d 3548 f2fs_build_gc_manager(sbi);
aff063e2 3549
60aa4d55
ST		 3550 err = f2fs_build_stats(sbi);
3551 if (err)
3552 goto free_nm;
3553
aff063e2
JK		 3554 /* get an inode for node space */
3555 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3556 if (IS_ERR(sbi->node_inode)) {
dcbb4c10 3557 f2fs_err(sbi, "Failed to read node inode");
aff063e2 3558 err = PTR_ERR(sbi->node_inode);
60aa4d55 3559 goto free_stats;
aff063e2
JK		 3560 }
3561
aff063e2
JK		 3562 /* read root inode and dentry */
3563 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3564 if (IS_ERR(root)) {
dcbb4c10 3565 f2fs_err(sbi, "Failed to read root inode");
aff063e2 3566 err = PTR_ERR(root);
60aa4d55 3567 goto free_node_inode;
aff063e2 3568 }
bcbfbd60
CY		 3569 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3570 !root->i_size || !root->i_nlink) {
9d847950 3571 iput(root);
8f99a946 3572 err = -EINVAL;
60aa4d55 3573 goto free_node_inode;
8f99a946 3574 }
aff063e2
JK		 3575
3576 sb->s_root = d_make_root(root); /* allocate root dentry */
3577 if (!sb->s_root) {
3578 err = -ENOMEM;
025cdb16 3579 goto free_node_inode;
aff063e2
JK		 3580 }
3581
dc6b2055 3582 err = f2fs_register_sysfs(sbi);
b59d0bae 3583 if (err)
a398101a 3584 goto free_root_inode;
b59d0bae 3585
ea676733 3586#ifdef CONFIG_QUOTA
76cf05d7 3587 /* Enable quota usage during mount */
7beb01f7 3588 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3589 err = f2fs_enable_quotas(sb);
730746ce 3590 if (err)
dcbb4c10 3591 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
ea676733
JK		 3592 }
3593#endif
7a88ddb5 3594 /* if there are any orphan inodes, free them */
4d57b86d 3595 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3596 if (err)
ea676733 3597 goto free_meta;
4b2414d0 3598
4354994f 3599 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3600 goto reset_checkpoint;
4354994f 3601
6437d1b0 3602 /* recover fsynced data */
a9117eca
CY		 3603 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
3604 !test_opt(sbi, NORECOVERY)) {
081d78c2
JK		 3605 /*
3606 * mount should be failed, when device has readonly mode, and
3607 * previous checkpoint was not done by clean system shutdown.
3608 */
b61af314
CY		 3609 if (f2fs_hw_is_readonly(sbi)) {
3610 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3611 err = -EROFS;
dcbb4c10 3612 f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
b61af314
CY		 3613 goto free_meta;
3614 }
dcbb4c10 3615 f2fs_info(sbi, "write access unavailable, skipping recovery");
b61af314 3616 goto reset_checkpoint;
081d78c2 3617 }
2adc3505
CY		 3618
3619 if (need_fsck)
3620 set_sbi_flag(sbi, SBI_NEED_FSCK);
3621
aa2c8c43
CY		 3622 if (skip_recovery)
3623 goto reset_checkpoint;
a468f0ef 3624
4d57b86d 3625 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3626 if (err < 0) {
aa2c8c43
CY		 3627 if (err != -ENOMEM)
3628 skip_recovery = true;
2adc3505 3629 need_fsck = true;
dcbb4c10
JP		 3630 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3631 err);
4b2414d0 3632 goto free_meta;
ed2e621a 3633 }
6781eabb 3634 } else {
4d57b86d 3635 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3636
3637 if (!f2fs_readonly(sb) && err > 0) {
3638 err = -EINVAL;
dcbb4c10 3639 f2fs_err(sbi, "Need to recover fsync data");
ea676733 3640 goto free_meta;
6781eabb 3641 }
6437d1b0 3642 }
d508c94e
SK		 3643
3644 /*
3645 * If the f2fs is not readonly and fsync data recovery succeeds,
3646 * check zoned block devices' write pointer consistency.
3647 */
3648 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
3649 err = f2fs_check_write_pointer(sbi);
3650 if (err)
3651 goto free_meta;
3652 }
3653
aa2c8c43 3654reset_checkpoint:
4d57b86d 3655 /* f2fs_recover_fsync_data() cleared this already */
315df839 3656 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3657
4354994f
DR		 3658 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3659 err = f2fs_disable_checkpoint(sbi);
3660 if (err)
812a9597 3661 goto sync_free_meta;
4354994f
DR		 3662 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3663 f2fs_enable_checkpoint(sbi);
3664 }
3665
6437d1b0
JK		 3666 /*
3667 * If filesystem is not mounted as read-only then
3668 * do start the gc_thread.
3669 */
bbbc34fd 3670 if (F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF && !f2fs_readonly(sb)) {
6437d1b0 3671 /* After POR, we can run background GC thread.*/
4d57b86d 3672 err = f2fs_start_gc_thread(sbi);
6437d1b0 3673 if (err)
812a9597 3674 goto sync_free_meta;
6437d1b0 3675 }
5222595d 3676 kvfree(options);
da554e48 3677
3678 /* recover broken superblock */
f2353d7b 3679 if (recovery) {
41214b3c 3680 err = f2fs_commit_super(sbi, true);
dcbb4c10
JP		 3681 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
3682 sbi->valid_super_block ? 1 : 2, err);
da554e48 3683 }
3684
bae01eda
CY		 3685 f2fs_join_shrinker(sbi);
3686
84b89e5d
JK		 3687 f2fs_tuning_parameters(sbi);
3688
dcbb4c10
JP		 3689 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
3690 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3691 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3692 f2fs_update_time(sbi, REQ_TIME);
db610a64 3693 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3694 return 0;
6437d1b0 3695
812a9597
JK		 3696sync_free_meta:
3697 /* safe to flush all the data */
3698 sync_filesystem(sbi->sb);
aa2c8c43 3699 retry_cnt = 0;
812a9597 3700
4b2414d0 3701free_meta:
ea676733 3702#ifdef CONFIG_QUOTA
26b5a079 3703 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3704 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3705 f2fs_quota_off_umount(sbi->sb);
3706#endif
4b2414d0 3707 /*
4d57b86d 3708 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3709 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3710 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3711 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3712 */
3713 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3714 /* evict some inodes being cached by GC */
3715 evict_inodes(sb);
dc6b2055 3716 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3717free_root_inode:
3718 dput(sb->s_root);
3719 sb->s_root = NULL;
3720free_node_inode:
4d57b86d 3721 f2fs_release_ino_entry(sbi, true);
bae01eda 3722 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3723 iput(sbi->node_inode);
7c77bf7d 3724 sbi->node_inode = NULL;
60aa4d55
ST		 3725free_stats:
3726 f2fs_destroy_stats(sbi);
aff063e2 3727free_nm:
4d57b86d 3728 f2fs_destroy_node_manager(sbi);
aff063e2 3729free_sm:
4d57b86d 3730 f2fs_destroy_segment_manager(sbi);
4c8ff709 3731 f2fs_destroy_post_read_wq(sbi);
3c62be17
JK		 3732free_devices:
3733 destroy_device_list(sbi);
5222595d 3734 kvfree(sbi->ckpt);
aff063e2
JK		 3735free_meta_inode:
3736 make_bad_inode(sbi->meta_inode);
3737 iput(sbi->meta_inode);
7c77bf7d 3738 sbi->meta_inode = NULL;
0a595eba
JK		 3739free_io_dummy:
3740 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3741free_percpu:
3742 destroy_percpu_info(sbi);
3743free_bio_info:
a912b54d 3744 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3745 kvfree(sbi->write_io[i]);
5aba5430
DR		 3746
3747#ifdef CONFIG_UNICODE
3748 utf8_unload(sbi->s_encoding);
3749#endif
d7997e63 3750free_options:
4b2414d0
CY		 3751#ifdef CONFIG_QUOTA
3752 for (i = 0; i < MAXQUOTAS; i++)
5222595d 3753 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3754#endif
5222595d 3755 kvfree(options);
aff063e2 3756free_sb_buf:
5222595d 3757 kvfree(raw_super);
aff063e2 3758free_sbi:
43b6573b
KM		 3759 if (sbi->s_chksum_driver)
3760 crypto_free_shash(sbi->s_chksum_driver);
5222595d 3761 kvfree(sbi);
ed2e621a
JK		 3762
3763 /* give only one another chance */
aa2c8c43
CY		 3764 if (retry_cnt > 0 && skip_recovery) {
3765 retry_cnt--;
ed2e621a
JK		 3766 shrink_dcache_sb(sb);
3767 goto try_onemore;
3768 }
aff063e2
JK		 3769 return err;
3770}
3771
3772static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3773 const char *dev_name, void *data)
3774{
3775 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3776}
3777
30a5537f
JK		 3778static void kill_f2fs_super(struct super_block *sb)
3779{
cce13252 3780 if (sb->s_root) {
1cb50f87
JK		 3781 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3782
3783 set_sbi_flag(sbi, SBI_IS_CLOSE);
3784 f2fs_stop_gc_thread(sbi);
3785 f2fs_stop_discard_thread(sbi);
3786
3787 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3788 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3789 struct cp_control cpc = {
3790 .reason = CP_UMOUNT,
3791 };
3792 f2fs_write_checkpoint(sbi, &cpc);
3793 }
1378752b
CY		 3794
3795 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3796 sb->s_flags &= ~SB_RDONLY;
cce13252 3797 }
30a5537f
JK		 3798 kill_block_super(sb);
3799}
3800
aff063e2
JK		 3801static struct file_system_type f2fs_fs_type = {
3802 .owner = THIS_MODULE,
3803 .name = "f2fs",
3804 .mount = f2fs_mount,
30a5537f 3805 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3806 .fs_flags = FS_REQUIRES_DEV,
3807};
7f78e035 3808MODULE_ALIAS_FS("f2fs");
aff063e2 3809
6e6093a8 3810static int __init init_inodecache(void)
aff063e2 3811{
5d097056
VD		 3812 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3813 sizeof(struct f2fs_inode_info), 0,
3814 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3815 if (!f2fs_inode_cachep)
aff063e2
JK		 3816 return -ENOMEM;
3817 return 0;
3818}
3819
3820static void destroy_inodecache(void)
3821{
3822 /*
3823 * Make sure all delayed rcu free inodes are flushed before we
3824 * destroy cache.
3825 */
3826 rcu_barrier();
3827 kmem_cache_destroy(f2fs_inode_cachep);
3828}
3829
3830static int __init init_f2fs_fs(void)
3831{
3832 int err;
3833
4071e67c
AP		 3834 if (PAGE_SIZE != F2FS_BLKSIZE) {
3835 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3836 PAGE_SIZE, F2FS_BLKSIZE);
3837 return -EINVAL;
3838 }
3839
c0508650
JK		 3840 f2fs_build_trace_ios();
3841
aff063e2
JK		 3842 err = init_inodecache();
3843 if (err)
3844 goto fail;
4d57b86d 3845 err = f2fs_create_node_manager_caches();
aff063e2 3846 if (err)
9890ff3f 3847 goto free_inodecache;
4d57b86d 3848 err = f2fs_create_segment_manager_caches();
aff063e2 3849 if (err)
9890ff3f 3850 goto free_node_manager_caches;
4d57b86d 3851 err = f2fs_create_checkpoint_caches();
aff063e2 3852 if (err)
06292073 3853 goto free_segment_manager_caches;
4d57b86d 3854 err = f2fs_create_extent_cache();
1dcc336b
CY		 3855 if (err)
3856 goto free_checkpoint_caches;
dc6b2055 3857 err = f2fs_init_sysfs();
a398101a 3858 if (err)
1dcc336b 3859 goto free_extent_cache;
2658e50d 3860 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3861 if (err)
a398101a 3862 goto free_sysfs;
2658e50d
JK		 3863 err = register_filesystem(&f2fs_fs_type);
3864 if (err)
3865 goto free_shrinker;
21acc07d 3866 f2fs_create_root_stats();
6dbb1796
EB		 3867 err = f2fs_init_post_read_processing();
3868 if (err)
3869 goto free_root_stats;
0b20fcec
CY		 3870 err = f2fs_init_bio_entry_cache();
3871 if (err)
3872 goto free_post_read;
f543805f
CY		 3873 err = f2fs_init_bioset();
3874 if (err)
3875 goto free_bio_enrty_cache;
9890ff3f 3876 return 0;
f543805f
CY		 3877free_bio_enrty_cache:
3878 f2fs_destroy_bio_entry_cache();
0b20fcec
CY		 3879free_post_read:
3880 f2fs_destroy_post_read_processing();
6dbb1796
EB		 3881free_root_stats:
3882 f2fs_destroy_root_stats();
787c7b8c 3883 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3884free_shrinker:
3885 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3886free_sysfs:
dc6b2055 3887 f2fs_exit_sysfs();
1dcc336b 3888free_extent_cache:
4d57b86d 3889 f2fs_destroy_extent_cache();
9890ff3f 3890free_checkpoint_caches:
4d57b86d 3891 f2fs_destroy_checkpoint_caches();
7fd9e544 3892free_segment_manager_caches:
4d57b86d 3893 f2fs_destroy_segment_manager_caches();
9890ff3f 3894free_node_manager_caches:
4d57b86d 3895 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3896free_inodecache:
3897 destroy_inodecache();
aff063e2
JK		 3898fail:
3899 return err;
3900}
3901
3902static void __exit exit_f2fs_fs(void)
3903{
f543805f 3904 f2fs_destroy_bioset();
0b20fcec 3905 f2fs_destroy_bio_entry_cache();
6dbb1796 3906 f2fs_destroy_post_read_processing();
4589d25d 3907 f2fs_destroy_root_stats();
aff063e2 3908 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3909 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3910 f2fs_exit_sysfs();
4d57b86d
CY		 3911 f2fs_destroy_extent_cache();
3912 f2fs_destroy_checkpoint_caches();
3913 f2fs_destroy_segment_manager_caches();
3914 f2fs_destroy_node_manager_caches();
aff063e2 3915 destroy_inodecache();
351f4fba 3916 f2fs_destroy_trace_ios();
aff063e2
JK		 3917}
3918
3919module_init(init_f2fs_fs)
3920module_exit(exit_f2fs_fs)
3921
3922MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3923MODULE_DESCRIPTION("Flash Friendly File System");
3924MODULE_LICENSE("GPL");
b4b9d34c 3925
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