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f2fs: clean up lfs/adaptive mount option
[mirror_ubuntu-hirsute-kernel.git] / fs / f2fs / super.c
CommitLineData
7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
aff063e2
JK		 3 * fs/f2fs/super.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
aff063e2
JK		 7 */
8#include <linux/module.h>
9#include <linux/init.h>
10#include <linux/fs.h>
11#include <linux/statfs.h>
aff063e2
JK		 12#include <linux/buffer_head.h>
13#include <linux/backing-dev.h>
14#include <linux/kthread.h>
15#include <linux/parser.h>
16#include <linux/mount.h>
17#include <linux/seq_file.h>
5e176d54 18#include <linux/proc_fs.h>
aff063e2
JK		 19#include <linux/random.h>
20#include <linux/exportfs.h>
d3ee456d 21#include <linux/blkdev.h>
0abd675e 22#include <linux/quotaops.h>
aff063e2 23#include <linux/f2fs_fs.h>
b59d0bae 24#include <linux/sysfs.h>
4b2414d0 25#include <linux/quota.h>
5aba5430 26#include <linux/unicode.h>
aff063e2
JK		 27
28#include "f2fs.h"
29#include "node.h"
5ec4e49f 30#include "segment.h"
aff063e2 31#include "xattr.h"
b59d0bae 32#include "gc.h"
db9f7c1a 33#include "trace.h"
aff063e2 34
a2a4a7e4
NJ		 35#define CREATE_TRACE_POINTS
36#include <trace/events/f2fs.h>
37
aff063e2
JK		 38static struct kmem_cache *f2fs_inode_cachep;
39
73faec4d 40#ifdef CONFIG_F2FS_FAULT_INJECTION
2c63fead 41
19880e6e 42const char *f2fs_fault_name[FAULT_MAX] = {
2c63fead 43 [FAULT_KMALLOC] = "kmalloc",
628b3d14 44 [FAULT_KVMALLOC] = "kvmalloc",
c41f3cc3 45 [FAULT_PAGE_ALLOC] = "page alloc",
01eccef7 46 [FAULT_PAGE_GET] = "page get",
d62fe971 47 [FAULT_ALLOC_BIO] = "alloc bio",
cb78942b
JK		 48 [FAULT_ALLOC_NID] = "alloc nid",
49 [FAULT_ORPHAN] = "orphan",
50 [FAULT_BLOCK] = "no more block",
51 [FAULT_DIR_DEPTH] = "too big dir depth",
53aa6bbf 52 [FAULT_EVICT_INODE] = "evict_inode fail",
14b44d23 53 [FAULT_TRUNCATE] = "truncate fail",
6f5c2ed0 54 [FAULT_READ_IO] = "read IO error",
0f348028 55 [FAULT_CHECKPOINT] = "checkpoint error",
b83dcfe6 56 [FAULT_DISCARD] = "discard error",
6f5c2ed0 57 [FAULT_WRITE_IO] = "write IO error",
2c63fead 58};
08796897 59
d494500a
CY		 60void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
61 unsigned int type)
08796897 62{
63189b78 63 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1ecc0c5c 64
08796897 65 if (rate) {
1ecc0c5c
CY		 66 atomic_set(&ffi->inject_ops, 0);
67 ffi->inject_rate = rate;
08796897 68 }
d494500a
CY		 69
70 if (type)
71 ffi->inject_type = type;
72
73 if (!rate && !type)
74 memset(ffi, 0, sizeof(struct f2fs_fault_info));
08796897 75}
73faec4d
JK		 76#endif
77
2658e50d
JK		 78/* f2fs-wide shrinker description */
79static struct shrinker f2fs_shrinker_info = {
80 .scan_objects = f2fs_shrink_scan,
81 .count_objects = f2fs_shrink_count,
82 .seeks = DEFAULT_SEEKS,
83};
84
aff063e2 85enum {
696c018c 86 Opt_gc_background,
aff063e2 87 Opt_disable_roll_forward,
2d834bf9 88 Opt_norecovery,
aff063e2 89 Opt_discard,
64058be9 90 Opt_nodiscard,
aff063e2 91 Opt_noheap,
7a20b8a6 92 Opt_heap,
4058c511 93 Opt_user_xattr,
aff063e2 94 Opt_nouser_xattr,
4058c511 95 Opt_acl,
aff063e2
JK		 96 Opt_noacl,
97 Opt_active_logs,
98 Opt_disable_ext_identify,
444c580f 99 Opt_inline_xattr,
23cf7212 100 Opt_noinline_xattr,
6afc662e 101 Opt_inline_xattr_size,
8274de77 102 Opt_inline_data,
5efd3c6f 103 Opt_inline_dentry,
97c1794a 104 Opt_noinline_dentry,
6b4afdd7 105 Opt_flush_merge,
69e9e427 106 Opt_noflush_merge,
0f7b2abd 107 Opt_nobarrier,
d5053a34 108 Opt_fastboot,
89672159 109 Opt_extent_cache,
7daaea25 110 Opt_noextent_cache,
75342797 111 Opt_noinline_data,
343f40f0 112 Opt_data_flush,
7e65be49 113 Opt_reserve_root,
7c2e5963
JK		 114 Opt_resgid,
115 Opt_resuid,
36abef4e 116 Opt_mode,
ec91538d 117 Opt_io_size_bits,
73faec4d 118 Opt_fault_injection,
d494500a 119 Opt_fault_type,
6d94c74a
JK		 120 Opt_lazytime,
121 Opt_nolazytime,
4b2414d0
CY		 122 Opt_quota,
123 Opt_noquota,
0abd675e
CY		 124 Opt_usrquota,
125 Opt_grpquota,
5c57132e 126 Opt_prjquota,
4b2414d0
CY		 127 Opt_usrjquota,
128 Opt_grpjquota,
129 Opt_prjjquota,
130 Opt_offusrjquota,
131 Opt_offgrpjquota,
132 Opt_offprjjquota,
133 Opt_jqfmt_vfsold,
134 Opt_jqfmt_vfsv0,
135 Opt_jqfmt_vfsv1,
0cdd3195 136 Opt_whint,
07939627 137 Opt_alloc,
93cf93f1 138 Opt_fsync,
ff62af20 139 Opt_test_dummy_encryption,
4d3aed70
DR		 140 Opt_checkpoint_disable,
141 Opt_checkpoint_disable_cap,
142 Opt_checkpoint_disable_cap_perc,
143 Opt_checkpoint_enable,
4c8ff709
CY		 144 Opt_compress_algorithm,
145 Opt_compress_log_size,
146 Opt_compress_extension,
aff063e2
JK		 147 Opt_err,
148};
149
150static match_table_t f2fs_tokens = {
696c018c 151 {Opt_gc_background, "background_gc=%s"},
aff063e2 152 {Opt_disable_roll_forward, "disable_roll_forward"},
2d834bf9 153 {Opt_norecovery, "norecovery"},
aff063e2 154 {Opt_discard, "discard"},
64058be9 155 {Opt_nodiscard, "nodiscard"},
aff063e2 156 {Opt_noheap, "no_heap"},
7a20b8a6 157 {Opt_heap, "heap"},
4058c511 158 {Opt_user_xattr, "user_xattr"},
aff063e2 159 {Opt_nouser_xattr, "nouser_xattr"},
4058c511 160 {Opt_acl, "acl"},
aff063e2
JK		 161 {Opt_noacl, "noacl"},
162 {Opt_active_logs, "active_logs=%u"},
163 {Opt_disable_ext_identify, "disable_ext_identify"},
444c580f 164 {Opt_inline_xattr, "inline_xattr"},
23cf7212 165 {Opt_noinline_xattr, "noinline_xattr"},
6afc662e 166 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
8274de77 167 {Opt_inline_data, "inline_data"},
5efd3c6f 168 {Opt_inline_dentry, "inline_dentry"},
97c1794a 169 {Opt_noinline_dentry, "noinline_dentry"},
6b4afdd7 170 {Opt_flush_merge, "flush_merge"},
69e9e427 171 {Opt_noflush_merge, "noflush_merge"},
0f7b2abd 172 {Opt_nobarrier, "nobarrier"},
d5053a34 173 {Opt_fastboot, "fastboot"},
89672159 174 {Opt_extent_cache, "extent_cache"},
7daaea25 175 {Opt_noextent_cache, "noextent_cache"},
75342797 176 {Opt_noinline_data, "noinline_data"},
343f40f0 177 {Opt_data_flush, "data_flush"},
7e65be49 178 {Opt_reserve_root, "reserve_root=%u"},
7c2e5963
JK		 179 {Opt_resgid, "resgid=%u"},
180 {Opt_resuid, "resuid=%u"},
36abef4e 181 {Opt_mode, "mode=%s"},
ec91538d 182 {Opt_io_size_bits, "io_bits=%u"},
73faec4d 183 {Opt_fault_injection, "fault_injection=%u"},
d494500a 184 {Opt_fault_type, "fault_type=%u"},
6d94c74a
JK		 185 {Opt_lazytime, "lazytime"},
186 {Opt_nolazytime, "nolazytime"},
4b2414d0
CY		 187 {Opt_quota, "quota"},
188 {Opt_noquota, "noquota"},
0abd675e
CY		 189 {Opt_usrquota, "usrquota"},
190 {Opt_grpquota, "grpquota"},
5c57132e 191 {Opt_prjquota, "prjquota"},
4b2414d0
CY		 192 {Opt_usrjquota, "usrjquota=%s"},
193 {Opt_grpjquota, "grpjquota=%s"},
194 {Opt_prjjquota, "prjjquota=%s"},
195 {Opt_offusrjquota, "usrjquota="},
196 {Opt_offgrpjquota, "grpjquota="},
197 {Opt_offprjjquota, "prjjquota="},
198 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
199 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
200 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
0cdd3195 201 {Opt_whint, "whint_mode=%s"},
07939627 202 {Opt_alloc, "alloc_mode=%s"},
93cf93f1 203 {Opt_fsync, "fsync_mode=%s"},
ff62af20 204 {Opt_test_dummy_encryption, "test_dummy_encryption"},
4d3aed70
DR		 205 {Opt_checkpoint_disable, "checkpoint=disable"},
206 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
207 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
208 {Opt_checkpoint_enable, "checkpoint=enable"},
4c8ff709
CY		 209 {Opt_compress_algorithm, "compress_algorithm=%s"},
210 {Opt_compress_log_size, "compress_log_size=%u"},
211 {Opt_compress_extension, "compress_extension=%s"},
aff063e2
JK		 212 {Opt_err, NULL},
213};
214
dcbb4c10 215void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
a07ef784
NJ		 216{
217 struct va_format vaf;
218 va_list args;
dcbb4c10 219 int level;
a07ef784
NJ		 220
221 va_start(args, fmt);
dcbb4c10
JP		 222
223 level = printk_get_level(fmt);
224 vaf.fmt = printk_skip_level(fmt);
a07ef784 225 vaf.va = &args;
dcbb4c10
JP		 226 printk("%c%cF2FS-fs (%s): %pV\n",
227 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
228
a07ef784
NJ		 229 va_end(args);
230}
231
5aba5430
DR		 232#ifdef CONFIG_UNICODE
233static const struct f2fs_sb_encodings {
234 __u16 magic;
235 char *name;
236 char *version;
237} f2fs_sb_encoding_map[] = {
238 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
239};
240
241static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
242 const struct f2fs_sb_encodings **encoding,
243 __u16 *flags)
244{
245 __u16 magic = le16_to_cpu(sb->s_encoding);
246 int i;
247
248 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
249 if (magic == f2fs_sb_encoding_map[i].magic)
250 break;
251
252 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
253 return -EINVAL;
254
255 *encoding = &f2fs_sb_encoding_map[i];
256 *flags = le16_to_cpu(sb->s_encoding_flags);
257
258 return 0;
259}
260#endif
261
7e65be49
JK		 262static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
263{
9a9aecaa
DR		 264 block_t limit = min((sbi->user_block_count << 1) / 1000,
265 sbi->user_block_count - sbi->reserved_blocks);
7e65be49
JK		 266
267 /* limit is 0.2% */
63189b78
CY		 268 if (test_opt(sbi, RESERVE_ROOT) &&
269 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
270 F2FS_OPTION(sbi).root_reserved_blocks = limit;
dcbb4c10
JP		 271 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
272 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 273 }
7c2e5963 274 if (!test_opt(sbi, RESERVE_ROOT) &&
63189b78 275 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
7c2e5963 276 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
63189b78 277 !gid_eq(F2FS_OPTION(sbi).s_resgid,
7c2e5963 278 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
dcbb4c10
JP		 279 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
280 from_kuid_munged(&init_user_ns,
281 F2FS_OPTION(sbi).s_resuid),
282 from_kgid_munged(&init_user_ns,
283 F2FS_OPTION(sbi).s_resgid));
7e65be49
JK		 284}
285
aff063e2
JK		 286static void init_once(void *foo)
287{
288 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
289
aff063e2
JK		 290 inode_init_once(&fi->vfs_inode);
291}
292
4b2414d0
CY		 293#ifdef CONFIG_QUOTA
294static const char * const quotatypes[] = INITQFNAMES;
295#define QTYPE2NAME(t) (quotatypes[t])
296static int f2fs_set_qf_name(struct super_block *sb, int qtype,
297 substring_t *args)
298{
299 struct f2fs_sb_info *sbi = F2FS_SB(sb);
300 char *qname;
301 int ret = -EINVAL;
302
63189b78 303 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 304 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 305 return -EINVAL;
306 }
7beb01f7 307 if (f2fs_sb_has_quota_ino(sbi)) {
dcbb4c10 308 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
ea676733
JK		 309 return 0;
310 }
311
4b2414d0
CY		 312 qname = match_strdup(args);
313 if (!qname) {
dcbb4c10 314 f2fs_err(sbi, "Not enough memory for storing quotafile name");
f365c6cc 315 return -ENOMEM;
4b2414d0 316 }
63189b78
CY		 317 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
318 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
4b2414d0
CY		 319 ret = 0;
320 else
dcbb4c10 321 f2fs_err(sbi, "%s quota file already specified",
4b2414d0
CY		 322 QTYPE2NAME(qtype));
323 goto errout;
324 }
325 if (strchr(qname, '/')) {
dcbb4c10 326 f2fs_err(sbi, "quotafile must be on filesystem root");
4b2414d0
CY		 327 goto errout;
328 }
63189b78 329 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
4b2414d0
CY		 330 set_opt(sbi, QUOTA);
331 return 0;
332errout:
5222595d 333 kvfree(qname);
4b2414d0
CY		 334 return ret;
335}
336
337static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
338{
339 struct f2fs_sb_info *sbi = F2FS_SB(sb);
340
63189b78 341 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 342 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 343 return -EINVAL;
344 }
5222595d 345 kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
63189b78 346 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
4b2414d0
CY		 347 return 0;
348}
349
350static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
351{
352 /*
353 * We do the test below only for project quotas. 'usrquota' and
354 * 'grpquota' mount options are allowed even without quota feature
355 * to support legacy quotas in quota files.
356 */
7beb01f7 357 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
dcbb4c10 358 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
4b2414d0
CY		 359 return -1;
360 }
63189b78
CY		 361 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
362 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
363 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
364 if (test_opt(sbi, USRQUOTA) &&
365 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
4b2414d0
CY		 366 clear_opt(sbi, USRQUOTA);
367
63189b78
CY		 368 if (test_opt(sbi, GRPQUOTA) &&
369 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
4b2414d0
CY		 370 clear_opt(sbi, GRPQUOTA);
371
63189b78
CY		 372 if (test_opt(sbi, PRJQUOTA) &&
373 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4b2414d0
CY		 374 clear_opt(sbi, PRJQUOTA);
375
376 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
377 test_opt(sbi, PRJQUOTA)) {
dcbb4c10 378 f2fs_err(sbi, "old and new quota format mixing");
4b2414d0
CY		 379 return -1;
380 }
381
63189b78 382 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 383 f2fs_err(sbi, "journaled quota format not specified");
4b2414d0
CY		 384 return -1;
385 }
386 }
ea676733 387
7beb01f7 388 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 389 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
63189b78 390 F2FS_OPTION(sbi).s_jquota_fmt = 0;
ea676733 391 }
4b2414d0
CY		 392 return 0;
393}
394#endif
395
696c018c
NJ		 396static int parse_options(struct super_block *sb, char *options)
397{
398 struct f2fs_sb_info *sbi = F2FS_SB(sb);
399 substring_t args[MAX_OPT_ARGS];
4c8ff709 400 unsigned char (*ext)[F2FS_EXTENSION_LEN];
696c018c 401 char *p, *name;
4c8ff709 402 int arg = 0, ext_cnt;
7c2e5963
JK		 403 kuid_t uid;
404 kgid_t gid;
4b2414d0
CY		 405#ifdef CONFIG_QUOTA
406 int ret;
407#endif
696c018c
NJ		 408
409 if (!options)
410 return 0;
411
412 while ((p = strsep(&options, ",")) != NULL) {
413 int token;
414 if (!*p)
415 continue;
416 /*
417 * Initialize args struct so we know whether arg was
418 * found; some options take optional arguments.
419 */
420 args[0].to = args[0].from = NULL;
421 token = match_token(p, f2fs_tokens, args);
422
423 switch (token) {
424 case Opt_gc_background:
425 name = match_strdup(&args[0]);
426
427 if (!name)
428 return -ENOMEM;
6aefd93b 429 if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
696c018c 430 set_opt(sbi, BG_GC);
6aefd93b
JK		 431 clear_opt(sbi, FORCE_FG_GC);
432 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
696c018c 433 clear_opt(sbi, BG_GC);
6aefd93b
JK		 434 clear_opt(sbi, FORCE_FG_GC);
435 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
436 set_opt(sbi, BG_GC);
437 set_opt(sbi, FORCE_FG_GC);
438 } else {
5222595d 439 kvfree(name);
696c018c
NJ		 440 return -EINVAL;
441 }
5222595d 442 kvfree(name);
696c018c
NJ		 443 break;
444 case Opt_disable_roll_forward:
445 set_opt(sbi, DISABLE_ROLL_FORWARD);
446 break;
2d834bf9
JK		 447 case Opt_norecovery:
448 /* this option mounts f2fs with ro */
a9117eca 449 set_opt(sbi, NORECOVERY);
2d834bf9
JK		 450 if (!f2fs_readonly(sb))
451 return -EINVAL;
452 break;
696c018c 453 case Opt_discard:
7d20c8ab 454 set_opt(sbi, DISCARD);
696c018c 455 break;
64058be9 456 case Opt_nodiscard:
7beb01f7 457 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 458 f2fs_warn(sbi, "discard is required for zoned block devices");
96ba2dec
DLM		 459 return -EINVAL;
460 }
64058be9 461 clear_opt(sbi, DISCARD);
487df616 462 break;
696c018c
NJ		 463 case Opt_noheap:
464 set_opt(sbi, NOHEAP);
465 break;
7a20b8a6
JK		 466 case Opt_heap:
467 clear_opt(sbi, NOHEAP);
468 break;
696c018c 469#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 470 case Opt_user_xattr:
471 set_opt(sbi, XATTR_USER);
472 break;
696c018c
NJ		 473 case Opt_nouser_xattr:
474 clear_opt(sbi, XATTR_USER);
475 break;
444c580f
JK		 476 case Opt_inline_xattr:
477 set_opt(sbi, INLINE_XATTR);
478 break;
23cf7212
CY		 479 case Opt_noinline_xattr:
480 clear_opt(sbi, INLINE_XATTR);
481 break;
6afc662e
CY		 482 case Opt_inline_xattr_size:
483 if (args->from && match_int(args, &arg))
484 return -EINVAL;
485 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 486 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 487 break;
696c018c 488#else
4058c511 489 case Opt_user_xattr:
dcbb4c10 490 f2fs_info(sbi, "user_xattr options not supported");
4058c511 491 break;
696c018c 492 case Opt_nouser_xattr:
dcbb4c10 493 f2fs_info(sbi, "nouser_xattr options not supported");
696c018c 494 break;
444c580f 495 case Opt_inline_xattr:
dcbb4c10 496 f2fs_info(sbi, "inline_xattr options not supported");
444c580f 497 break;
23cf7212 498 case Opt_noinline_xattr:
dcbb4c10 499 f2fs_info(sbi, "noinline_xattr options not supported");
23cf7212 500 break;
696c018c
NJ		 501#endif
502#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 503 case Opt_acl:
504 set_opt(sbi, POSIX_ACL);
505 break;
696c018c
NJ		 506 case Opt_noacl:
507 clear_opt(sbi, POSIX_ACL);
508 break;
509#else
4058c511 510 case Opt_acl:
dcbb4c10 511 f2fs_info(sbi, "acl options not supported");
4058c511 512 break;
696c018c 513 case Opt_noacl:
dcbb4c10 514 f2fs_info(sbi, "noacl options not supported");
696c018c
NJ		 515 break;
516#endif
517 case Opt_active_logs:
518 if (args->from && match_int(args, &arg))
519 return -EINVAL;
520 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
521 return -EINVAL;
63189b78 522 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 523 break;
524 case Opt_disable_ext_identify:
525 set_opt(sbi, DISABLE_EXT_IDENTIFY);
526 break;
8274de77
HL		 527 case Opt_inline_data:
528 set_opt(sbi, INLINE_DATA);
529 break;
5efd3c6f
CY		 530 case Opt_inline_dentry:
531 set_opt(sbi, INLINE_DENTRY);
532 break;
97c1794a
CY		 533 case Opt_noinline_dentry:
534 clear_opt(sbi, INLINE_DENTRY);
535 break;
6b4afdd7
JK		 536 case Opt_flush_merge:
537 set_opt(sbi, FLUSH_MERGE);
538 break;
69e9e427
JK		 539 case Opt_noflush_merge:
540 clear_opt(sbi, FLUSH_MERGE);
541 break;
0f7b2abd
JK		 542 case Opt_nobarrier:
543 set_opt(sbi, NOBARRIER);
544 break;
d5053a34
JK		 545 case Opt_fastboot:
546 set_opt(sbi, FASTBOOT);
547 break;
89672159
CY		 548 case Opt_extent_cache:
549 set_opt(sbi, EXTENT_CACHE);
550 break;
7daaea25
JK		 551 case Opt_noextent_cache:
552 clear_opt(sbi, EXTENT_CACHE);
553 break;
75342797
WL		 554 case Opt_noinline_data:
555 clear_opt(sbi, INLINE_DATA);
556 break;
343f40f0
CY		 557 case Opt_data_flush:
558 set_opt(sbi, DATA_FLUSH);
559 break;
7e65be49
JK		 560 case Opt_reserve_root:
561 if (args->from && match_int(args, &arg))
562 return -EINVAL;
563 if (test_opt(sbi, RESERVE_ROOT)) {
dcbb4c10
JP		 564 f2fs_info(sbi, "Preserve previous reserve_root=%u",
565 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 566 } else {
63189b78 567 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 568 set_opt(sbi, RESERVE_ROOT);
569 }
570 break;
7c2e5963
JK		 571 case Opt_resuid:
572 if (args->from && match_int(args, &arg))
573 return -EINVAL;
574 uid = make_kuid(current_user_ns(), arg);
575 if (!uid_valid(uid)) {
dcbb4c10 576 f2fs_err(sbi, "Invalid uid value %d", arg);
7c2e5963
JK		 577 return -EINVAL;
578 }
63189b78 579 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 580 break;
581 case Opt_resgid:
582 if (args->from && match_int(args, &arg))
583 return -EINVAL;
584 gid = make_kgid(current_user_ns(), arg);
585 if (!gid_valid(gid)) {
dcbb4c10 586 f2fs_err(sbi, "Invalid gid value %d", arg);
7c2e5963
JK		 587 return -EINVAL;
588 }
63189b78 589 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 590 break;
36abef4e
JK		 591 case Opt_mode:
592 name = match_strdup(&args[0]);
593
594 if (!name)
595 return -ENOMEM;
596 if (strlen(name) == 8 &&
597 !strncmp(name, "adaptive", 8)) {
7beb01f7 598 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 599 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
5222595d 600 kvfree(name);
3adc57e9
DLM		 601 return -EINVAL;
602 }
b0332a0f 603 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
36abef4e
JK		 604 } else if (strlen(name) == 3 &&
605 !strncmp(name, "lfs", 3)) {
b0332a0f 606 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
36abef4e 607 } else {
5222595d 608 kvfree(name);
36abef4e
JK		 609 return -EINVAL;
610 }
5222595d 611 kvfree(name);
36abef4e 612 break;
ec91538d
JK		 613 case Opt_io_size_bits:
614 if (args->from && match_int(args, &arg))
615 return -EINVAL;
6d52e135 616 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
dcbb4c10
JP		 617 f2fs_warn(sbi, "Not support %d, larger than %d",
618 1 << arg, BIO_MAX_PAGES);
ec91538d
JK		 619 return -EINVAL;
620 }
63189b78 621 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 622 break;
4cb037ec 623#ifdef CONFIG_F2FS_FAULT_INJECTION
73faec4d
JK		 624 case Opt_fault_injection:
625 if (args->from && match_int(args, &arg))
626 return -EINVAL;
d494500a
CY		 627 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
628 set_opt(sbi, FAULT_INJECTION);
d494500a 629 break;
4cb037ec 630
d494500a
CY		 631 case Opt_fault_type:
632 if (args->from && match_int(args, &arg))
633 return -EINVAL;
d494500a 634 f2fs_build_fault_attr(sbi, 0, arg);
0cc0dec2 635 set_opt(sbi, FAULT_INJECTION);
4cb037ec 636 break;
73faec4d 637#else
4cb037ec 638 case Opt_fault_injection:
dcbb4c10 639 f2fs_info(sbi, "fault_injection options not supported");
73faec4d 640 break;
4cb037ec
CX		 641
642 case Opt_fault_type:
dcbb4c10 643 f2fs_info(sbi, "fault_type options not supported");
4cb037ec
CX		 644 break;
645#endif
6d94c74a 646 case Opt_lazytime:
1751e8a6 647 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 648 break;
649 case Opt_nolazytime:
1751e8a6 650 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 651 break;
0abd675e 652#ifdef CONFIG_QUOTA
4b2414d0 653 case Opt_quota:
0abd675e
CY		 654 case Opt_usrquota:
655 set_opt(sbi, USRQUOTA);
656 break;
657 case Opt_grpquota:
658 set_opt(sbi, GRPQUOTA);
659 break;
5c57132e
CY		 660 case Opt_prjquota:
661 set_opt(sbi, PRJQUOTA);
662 break;
4b2414d0
CY		 663 case Opt_usrjquota:
664 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
665 if (ret)
666 return ret;
667 break;
668 case Opt_grpjquota:
669 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
670 if (ret)
671 return ret;
672 break;
673 case Opt_prjjquota:
674 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
675 if (ret)
676 return ret;
677 break;
678 case Opt_offusrjquota:
679 ret = f2fs_clear_qf_name(sb, USRQUOTA);
680 if (ret)
681 return ret;
682 break;
683 case Opt_offgrpjquota:
684 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
685 if (ret)
686 return ret;
687 break;
688 case Opt_offprjjquota:
689 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
690 if (ret)
691 return ret;
692 break;
693 case Opt_jqfmt_vfsold:
63189b78 694 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 695 break;
696 case Opt_jqfmt_vfsv0:
63189b78 697 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 698 break;
699 case Opt_jqfmt_vfsv1:
63189b78 700 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 701 break;
702 case Opt_noquota:
703 clear_opt(sbi, QUOTA);
704 clear_opt(sbi, USRQUOTA);
705 clear_opt(sbi, GRPQUOTA);
706 clear_opt(sbi, PRJQUOTA);
707 break;
0abd675e 708#else
4b2414d0 709 case Opt_quota:
0abd675e
CY		 710 case Opt_usrquota:
711 case Opt_grpquota:
5c57132e 712 case Opt_prjquota:
4b2414d0
CY		 713 case Opt_usrjquota:
714 case Opt_grpjquota:
715 case Opt_prjjquota:
716 case Opt_offusrjquota:
717 case Opt_offgrpjquota:
718 case Opt_offprjjquota:
719 case Opt_jqfmt_vfsold:
720 case Opt_jqfmt_vfsv0:
721 case Opt_jqfmt_vfsv1:
722 case Opt_noquota:
dcbb4c10 723 f2fs_info(sbi, "quota operations not supported");
0abd675e
CY		 724 break;
725#endif
0cdd3195
HL		 726 case Opt_whint:
727 name = match_strdup(&args[0]);
728 if (!name)
729 return -ENOMEM;
730 if (strlen(name) == 10 &&
731 !strncmp(name, "user-based", 10)) {
63189b78 732 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
0cdd3195
HL		 733 } else if (strlen(name) == 3 &&
734 !strncmp(name, "off", 3)) {
63189b78 735 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
f2e703f9
HL		 736 } else if (strlen(name) == 8 &&
737 !strncmp(name, "fs-based", 8)) {
63189b78 738 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
0cdd3195 739 } else {
5222595d 740 kvfree(name);
0cdd3195
HL		 741 return -EINVAL;
742 }
5222595d 743 kvfree(name);
0cdd3195 744 break;
07939627
JK		 745 case Opt_alloc:
746 name = match_strdup(&args[0]);
747 if (!name)
748 return -ENOMEM;
749
750 if (strlen(name) == 7 &&
751 !strncmp(name, "default", 7)) {
63189b78 752 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
07939627
JK		 753 } else if (strlen(name) == 5 &&
754 !strncmp(name, "reuse", 5)) {
63189b78 755 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627 756 } else {
5222595d 757 kvfree(name);
07939627
JK		 758 return -EINVAL;
759 }
5222595d 760 kvfree(name);
07939627 761 break;
93cf93f1
JZ		 762 case Opt_fsync:
763 name = match_strdup(&args[0]);
764 if (!name)
765 return -ENOMEM;
766 if (strlen(name) == 5 &&
767 !strncmp(name, "posix", 5)) {
63189b78 768 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
93cf93f1
JZ		 769 } else if (strlen(name) == 6 &&
770 !strncmp(name, "strict", 6)) {
63189b78 771 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
d6290814
JK		 772 } else if (strlen(name) == 9 &&
773 !strncmp(name, "nobarrier", 9)) {
774 F2FS_OPTION(sbi).fsync_mode =
775 FSYNC_MODE_NOBARRIER;
93cf93f1 776 } else {
5222595d 777 kvfree(name);
93cf93f1
JZ		 778 return -EINVAL;
779 }
5222595d 780 kvfree(name);
93cf93f1 781 break;
ff62af20 782 case Opt_test_dummy_encryption:
643fa961 783#ifdef CONFIG_FS_ENCRYPTION
7beb01f7 784 if (!f2fs_sb_has_encrypt(sbi)) {
dcbb4c10 785 f2fs_err(sbi, "Encrypt feature is off");
ff62af20
SY		 786 return -EINVAL;
787 }
788
789 F2FS_OPTION(sbi).test_dummy_encryption = true;
dcbb4c10 790 f2fs_info(sbi, "Test dummy encryption mode enabled");
ff62af20 791#else
dcbb4c10 792 f2fs_info(sbi, "Test dummy encryption mount option ignored");
ff62af20
SY		 793#endif
794 break;
4d3aed70
DR		 795 case Opt_checkpoint_disable_cap_perc:
796 if (args->from && match_int(args, &arg))
4354994f 797 return -EINVAL;
4d3aed70
DR		 798 if (arg < 0 || arg > 100)
799 return -EINVAL;
800 if (arg == 100)
801 F2FS_OPTION(sbi).unusable_cap =
802 sbi->user_block_count;
803 else
804 F2FS_OPTION(sbi).unusable_cap =
805 (sbi->user_block_count / 100) * arg;
806 set_opt(sbi, DISABLE_CHECKPOINT);
807 break;
808 case Opt_checkpoint_disable_cap:
809 if (args->from && match_int(args, &arg))
810 return -EINVAL;
811 F2FS_OPTION(sbi).unusable_cap = arg;
812 set_opt(sbi, DISABLE_CHECKPOINT);
813 break;
814 case Opt_checkpoint_disable:
815 set_opt(sbi, DISABLE_CHECKPOINT);
816 break;
817 case Opt_checkpoint_enable:
818 clear_opt(sbi, DISABLE_CHECKPOINT);
4354994f 819 break;
4c8ff709
CY		 820 case Opt_compress_algorithm:
821 if (!f2fs_sb_has_compression(sbi)) {
822 f2fs_err(sbi, "Compression feature if off");
823 return -EINVAL;
824 }
825 name = match_strdup(&args[0]);
826 if (!name)
827 return -ENOMEM;
828 if (strlen(name) == 3 && !strcmp(name, "lzo")) {
829 F2FS_OPTION(sbi).compress_algorithm =
830 COMPRESS_LZO;
831 } else if (strlen(name) == 3 &&
832 !strcmp(name, "lz4")) {
833 F2FS_OPTION(sbi).compress_algorithm =
834 COMPRESS_LZ4;
835 } else {
836 kfree(name);
837 return -EINVAL;
838 }
839 kfree(name);
840 break;
841 case Opt_compress_log_size:
842 if (!f2fs_sb_has_compression(sbi)) {
843 f2fs_err(sbi, "Compression feature is off");
844 return -EINVAL;
845 }
846 if (args->from && match_int(args, &arg))
847 return -EINVAL;
848 if (arg < MIN_COMPRESS_LOG_SIZE ||
849 arg > MAX_COMPRESS_LOG_SIZE) {
850 f2fs_err(sbi,
851 "Compress cluster log size is out of range");
852 return -EINVAL;
853 }
854 F2FS_OPTION(sbi).compress_log_size = arg;
855 break;
856 case Opt_compress_extension:
857 if (!f2fs_sb_has_compression(sbi)) {
858 f2fs_err(sbi, "Compression feature is off");
859 return -EINVAL;
860 }
861 name = match_strdup(&args[0]);
862 if (!name)
863 return -ENOMEM;
864
865 ext = F2FS_OPTION(sbi).extensions;
866 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
867
868 if (strlen(name) >= F2FS_EXTENSION_LEN ||
869 ext_cnt >= COMPRESS_EXT_NUM) {
870 f2fs_err(sbi,
871 "invalid extension length/number");
872 kfree(name);
873 return -EINVAL;
874 }
875
876 strcpy(ext[ext_cnt], name);
877 F2FS_OPTION(sbi).compress_ext_cnt++;
878 kfree(name);
879 break;
696c018c 880 default:
dcbb4c10
JP		 881 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
882 p);
696c018c
NJ		 883 return -EINVAL;
884 }
885 }
4b2414d0
CY		 886#ifdef CONFIG_QUOTA
887 if (f2fs_check_quota_options(sbi))
888 return -EINVAL;
00960c2c 889#else
7beb01f7 890 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 891 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
00960c2c
SY		 892 return -EINVAL;
893 }
7beb01f7 894 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 895 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
4ddc1b28
CY		 896 return -EINVAL;
897 }
4b2414d0 898#endif
5aba5430
DR		 899#ifndef CONFIG_UNICODE
900 if (f2fs_sb_has_casefold(sbi)) {
901 f2fs_err(sbi,
902 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
903 return -EINVAL;
904 }
905#endif
ec91538d 906
b0332a0f 907 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
dcbb4c10
JP		 908 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
909 F2FS_IO_SIZE_KB(sbi));
ec91538d
JK		 910 return -EINVAL;
911 }
6afc662e
CY		 912
913 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
70db5b04
JK		 914 int min_size, max_size;
915
7beb01f7
CY		 916 if (!f2fs_sb_has_extra_attr(sbi) ||
917 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
dcbb4c10 918 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
4d817ae0
CY		 919 return -EINVAL;
920 }
6afc662e 921 if (!test_opt(sbi, INLINE_XATTR)) {
dcbb4c10 922 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
6afc662e
CY		 923 return -EINVAL;
924 }
70db5b04
JK		 925
926 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
dd6c89b5 927 max_size = MAX_INLINE_XATTR_SIZE;
70db5b04
JK		 928
929 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
930 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
dcbb4c10
JP		 931 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
932 min_size, max_size);
6afc662e
CY		 933 return -EINVAL;
934 }
935 }
0cdd3195 936
b0332a0f 937 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
dcbb4c10 938 f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
4354994f
DR		 939 return -EINVAL;
940 }
941
0cdd3195
HL		 942 /* Not pass down write hints if the number of active logs is lesser
943 * than NR_CURSEG_TYPE.
944 */
63189b78
CY		 945 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
946 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 947 return 0;
948}
949
aff063e2
JK		 950static struct inode *f2fs_alloc_inode(struct super_block *sb)
951{
952 struct f2fs_inode_info *fi;
953
a0acdfe0 954 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 955 if (!fi)
956 return NULL;
957
958 init_once((void *) fi);
959
434720fa 960 /* Initialize f2fs-specific inode info */
204706c7 961 atomic_set(&fi->dirty_pages, 0);
d928bfbf 962 init_rwsem(&fi->i_sem);
c10c9820 963 spin_lock_init(&fi->i_size_lock);
2710fd7e 964 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 965 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 966 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 967 INIT_LIST_HEAD(&fi->inmem_pages);
968 mutex_init(&fi->inmem_lock);
b2532c69
CY		 969 init_rwsem(&fi->i_gc_rwsem[READ]);
970 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 971 init_rwsem(&fi->i_mmap_sem);
27161f13 972 init_rwsem(&fi->i_xattr_sem);
aff063e2 973
ab9fa662
JK		 974 /* Will be used by directory only */
975 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 976
aff063e2
JK		 977 return &fi->vfs_inode;
978}
979
531ad7d5
JK		 980static int f2fs_drop_inode(struct inode *inode)
981{
a8933b6b 982 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
b8d96a30 983 int ret;
a8933b6b
CY		 984
985 /*
986 * during filesystem shutdown, if checkpoint is disabled,
987 * drop useless meta/node dirty pages.
988 */
989 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
990 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
991 inode->i_ino == F2FS_META_INO(sbi)) {
992 trace_f2fs_drop_inode(inode, 1);
993 return 1;
994 }
995 }
996
531ad7d5
JK		 997 /*
998 * This is to avoid a deadlock condition like below.
999 * writeback_single_inode(inode)
1000 * - f2fs_write_data_page
1001 * - f2fs_gc -> iput -> evict
1002 * - inode_wait_for_writeback(inode)
1003 */
0f18b462 1004 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 1005 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 1006 /* to avoid evict_inode call simultaneously */
1007 atomic_inc(&inode->i_count);
06e1bc05
JK		 1008 spin_unlock(&inode->i_lock);
1009
1010 /* some remained atomic pages should discarded */
1011 if (f2fs_is_atomic_file(inode))
4d57b86d 1012 f2fs_drop_inmem_pages(inode);
06e1bc05 1013
3e72f721
JK		 1014 /* should remain fi->extent_tree for writepage */
1015 f2fs_destroy_extent_node(inode);
1016
06e1bc05 1017 sb_start_intwrite(inode->i_sb);
fc9581c8 1018 f2fs_i_size_write(inode, 0);
06e1bc05 1019
a0770e13 1020 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1021 inode, NULL, 0, DATA);
1022 truncate_inode_pages_final(inode->i_mapping);
1023
06e1bc05 1024 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 1025 f2fs_truncate(inode);
06e1bc05
JK		 1026
1027 sb_end_intwrite(inode->i_sb);
1028
06e1bc05 1029 spin_lock(&inode->i_lock);
3e72f721 1030 atomic_dec(&inode->i_count);
06e1bc05 1031 }
b8d96a30 1032 trace_f2fs_drop_inode(inode, 0);
531ad7d5 1033 return 0;
06e1bc05 1034 }
b8d96a30 1035 ret = generic_drop_inode(inode);
8ce589c7
EB		 1036 if (!ret)
1037 ret = fscrypt_drop_inode(inode);
b8d96a30
HP		 1038 trace_f2fs_drop_inode(inode, ret);
1039 return ret;
531ad7d5
JK		 1040}
1041
7c45729a 1042int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 1043{
0f18b462 1044 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 1045 int ret = 0;
0f18b462 1046
0f18b462
JK		 1047 spin_lock(&sbi->inode_lock[DIRTY_META]);
1048 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 1049 ret = 1;
1050 } else {
1051 set_inode_flag(inode, FI_DIRTY_INODE);
1052 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 1053 }
7c45729a
JK		 1054 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1055 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 1056 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 1057 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1058 }
338bbfa0 1059 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 1060 return ret;
0f18b462
JK		 1061}
1062
1063void f2fs_inode_synced(struct inode *inode)
1064{
1065 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1066
1067 spin_lock(&sbi->inode_lock[DIRTY_META]);
1068 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1069 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1070 return;
1071 }
7c45729a
JK		 1072 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1073 list_del_init(&F2FS_I(inode)->gdirty_list);
1074 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1075 }
0f18b462 1076 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 1077 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 1078 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 1079 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 1080}
1081
b56ab837
JK		 1082/*
1083 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1084 *
1085 * We should call set_dirty_inode to write the dirty inode through write_inode.
1086 */
1087static void f2fs_dirty_inode(struct inode *inode, int flags)
1088{
1089 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1090
1091 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1092 inode->i_ino == F2FS_META_INO(sbi))
1093 return;
1094
1095 if (flags == I_DIRTY_TIME)
1096 return;
1097
1098 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1099 clear_inode_flag(inode, FI_AUTO_RECOVER);
1100
7c45729a 1101 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 1102}
1103
d01718a0 1104static void f2fs_free_inode(struct inode *inode)
aff063e2 1105{
2c58d548 1106 fscrypt_free_inode(inode);
aff063e2
JK		 1107 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1108}
1109
523be8a6
JK		 1110static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1111{
41382ec4 1112 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 1113 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 1114}
1115
3c62be17
JK		 1116static void destroy_device_list(struct f2fs_sb_info *sbi)
1117{
1118 int i;
1119
1120 for (i = 0; i < sbi->s_ndevs; i++) {
1121 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1122#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1123 kvfree(FDEV(i).blkz_seq);
3c62be17
JK		 1124#endif
1125 }
5222595d 1126 kvfree(sbi->devs);
3c62be17
JK		 1127}
1128
aff063e2
JK		 1129static void f2fs_put_super(struct super_block *sb)
1130{
1131 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1132 int i;
cf5c759f 1133 bool dropped;
aff063e2 1134
0abd675e 1135 f2fs_quota_off_umount(sb);
aff063e2 1136
2658e50d
JK		 1137 /* prevent remaining shrinker jobs */
1138 mutex_lock(&sbi->umount_mutex);
1139
85dc2f2c
JK		 1140 /*
1141 * We don't need to do checkpoint when superblock is clean.
1142 * But, the previous checkpoint was not done by umount, it needs to do
1143 * clean checkpoint again.
1144 */
4354994f
DR		 1145 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1146 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1147 struct cp_control cpc = {
1148 .reason = CP_UMOUNT,
1149 };
4d57b86d 1150 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1151 }
aff063e2 1152
4e6a8d9b 1153 /* be sure to wait for any on-going discard commands */
03f2c02d 1154 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1155
7d20c8ab
CY		 1156 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1157 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1158 struct cp_control cpc = {
1159 .reason = CP_UMOUNT | CP_TRIMMED,
1160 };
4d57b86d 1161 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1162 }
1163
cf779cab
JK		 1164 /*
1165 * normally superblock is clean, so we need to release this.
1166 * In addition, EIO will skip do checkpoint, we need this as well.
1167 */
4d57b86d 1168 f2fs_release_ino_entry(sbi, true);
6f12ac25 1169
2658e50d
JK		 1170 f2fs_leave_shrinker(sbi);
1171 mutex_unlock(&sbi->umount_mutex);
1172
17c19120 1173 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1174 f2fs_flush_merged_writes(sbi);
17c19120 1175
bf22c3cc 1176 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
50fa53ec
CY		 1177
1178 f2fs_bug_on(sbi, sbi->fsync_node_num);
1179
aff063e2 1180 iput(sbi->node_inode);
7c77bf7d
JK		 1181 sbi->node_inode = NULL;
1182
aff063e2 1183 iput(sbi->meta_inode);
7c77bf7d 1184 sbi->meta_inode = NULL;
aff063e2 1185
60aa4d55
ST		 1186 /*
1187 * iput() can update stat information, if f2fs_write_checkpoint()
1188 * above failed with error.
1189 */
1190 f2fs_destroy_stats(sbi);
1191
aff063e2 1192 /* destroy f2fs internal modules */
4d57b86d
CY		 1193 f2fs_destroy_node_manager(sbi);
1194 f2fs_destroy_segment_manager(sbi);
aff063e2 1195
4c8ff709
CY		 1196 f2fs_destroy_post_read_wq(sbi);
1197
5222595d 1198 kvfree(sbi->ckpt);
a398101a 1199
dc6b2055 1200 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1201
1202 sb->s_fs_info = NULL;
43b6573b
KM		 1203 if (sbi->s_chksum_driver)
1204 crypto_free_shash(sbi->s_chksum_driver);
5222595d 1205 kvfree(sbi->raw_super);
523be8a6 1206
3c62be17 1207 destroy_device_list(sbi);
b6895e8f 1208 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1209#ifdef CONFIG_QUOTA
1210 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1211 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1212#endif
523be8a6 1213 destroy_percpu_info(sbi);
a912b54d 1214 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 1215 kvfree(sbi->write_io[i]);
5aba5430
DR		 1216#ifdef CONFIG_UNICODE
1217 utf8_unload(sbi->s_encoding);
1218#endif
5222595d 1219 kvfree(sbi);
aff063e2
JK		 1220}
1221
1222int f2fs_sync_fs(struct super_block *sb, int sync)
1223{
1224 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1225 int err = 0;
aff063e2 1226
1f227a3e
JK		 1227 if (unlikely(f2fs_cp_error(sbi)))
1228 return 0;
4354994f
DR		 1229 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1230 return 0;
1f227a3e 1231
a2a4a7e4
NJ		 1232 trace_f2fs_sync_fs(sb, sync);
1233
4b2414d0
CY		 1234 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1235 return -EAGAIN;
1236
b7473754 1237 if (sync) {
d5053a34
JK		 1238 struct cp_control cpc;
1239
119ee914
JK		 1240 cpc.reason = __get_cp_reason(sbi);
1241
fb24fea7 1242 down_write(&sbi->gc_lock);
4d57b86d 1243 err = f2fs_write_checkpoint(sbi, &cpc);
fb24fea7 1244 up_write(&sbi->gc_lock);
b7473754 1245 }
05ca3632 1246 f2fs_trace_ios(NULL, 1);
aff063e2 1247
c34f42e2 1248 return err;
aff063e2
JK		 1249}
1250
d6212a5f
CL		 1251static int f2fs_freeze(struct super_block *sb)
1252{
77888c1e 1253 if (f2fs_readonly(sb))
d6212a5f
CL		 1254 return 0;
1255
b4b9d34c
JK		 1256 /* IO error happened before */
1257 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1258 return -EIO;
1259
1260 /* must be clean, since sync_filesystem() was already called */
1261 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1262 return -EINVAL;
1263 return 0;
d6212a5f
CL		 1264}
1265
1266static int f2fs_unfreeze(struct super_block *sb)
1267{
1268 return 0;
1269}
1270
ddc34e32
CY		 1271#ifdef CONFIG_QUOTA
1272static int f2fs_statfs_project(struct super_block *sb,
1273 kprojid_t projid, struct kstatfs *buf)
1274{
1275 struct kqid qid;
1276 struct dquot *dquot;
1277 u64 limit;
1278 u64 curblock;
1279
1280 qid = make_kqid_projid(projid);
1281 dquot = dqget(sb, qid);
1282 if (IS_ERR(dquot))
1283 return PTR_ERR(dquot);
955ac6e5 1284 spin_lock(&dquot->dq_dqb_lock);
ddc34e32 1285
bf2cbd3c
CX		 1286 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1287 dquot->dq_dqb.dqb_bhardlimit);
acdf2172
CX		 1288 if (limit)
1289 limit >>= sb->s_blocksize_bits;
909110c0 1290
ddc34e32
CY		 1291 if (limit && buf->f_blocks > limit) {
1292 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1293 buf->f_blocks = limit;
1294 buf->f_bfree = buf->f_bavail =
1295 (buf->f_blocks > curblock) ?
1296 (buf->f_blocks - curblock) : 0;
1297 }
1298
bf2cbd3c
CX		 1299 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1300 dquot->dq_dqb.dqb_ihardlimit);
909110c0 1301
ddc34e32
CY		 1302 if (limit && buf->f_files > limit) {
1303 buf->f_files = limit;
1304 buf->f_ffree =
1305 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1306 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1307 }
1308
955ac6e5 1309 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1310 dqput(dquot);
1311 return 0;
1312}
1313#endif
1314
aff063e2
JK		 1315static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1316{
1317 struct super_block *sb = dentry->d_sb;
1318 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1319 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1320 block_t total_count, user_block_count, start_count;
0cc091d0 1321 u64 avail_node_count;
aff063e2
JK		 1322
1323 total_count = le64_to_cpu(sbi->raw_super->block_count);
1324 user_block_count = sbi->user_block_count;
1325 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1326 buf->f_type = F2FS_SUPER_MAGIC;
1327 buf->f_bsize = sbi->blocksize;
1328
1329 buf->f_blocks = total_count - start_count;
f66c027e 1330 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1331 sbi->current_reserved_blocks;
c9c8ed50
CY		 1332
1333 spin_lock(&sbi->stat_lock);
4354994f
DR		 1334 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1335 buf->f_bfree = 0;
1336 else
1337 buf->f_bfree -= sbi->unusable_block_count;
c9c8ed50 1338 spin_unlock(&sbi->stat_lock);
4354994f 1339
63189b78
CY		 1340 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1341 buf->f_bavail = buf->f_bfree -
1342 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1343 else
1344 buf->f_bavail = 0;
aff063e2 1345
27cae0bc 1346 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1347
1348 if (avail_node_count > user_block_count) {
1349 buf->f_files = user_block_count;
1350 buf->f_ffree = buf->f_bavail;
1351 } else {
1352 buf->f_files = avail_node_count;
1353 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1354 buf->f_bavail);
1355 }
aff063e2 1356
5a20d339 1357 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1358 buf->f_fsid.val[0] = (u32)id;
1359 buf->f_fsid.val[1] = (u32)(id >> 32);
1360
ddc34e32
CY		 1361#ifdef CONFIG_QUOTA
1362 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1363 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1364 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1365 }
1366#endif
aff063e2
JK		 1367 return 0;
1368}
1369
4b2414d0
CY		 1370static inline void f2fs_show_quota_options(struct seq_file *seq,
1371 struct super_block *sb)
1372{
1373#ifdef CONFIG_QUOTA
1374 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1375
63189b78 1376 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1377 char *fmtname = "";
1378
63189b78 1379 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1380 case QFMT_VFS_OLD:
1381 fmtname = "vfsold";
1382 break;
1383 case QFMT_VFS_V0:
1384 fmtname = "vfsv0";
1385 break;
1386 case QFMT_VFS_V1:
1387 fmtname = "vfsv1";
1388 break;
1389 }
1390 seq_printf(seq, ",jqfmt=%s", fmtname);
1391 }
1392
63189b78
CY		 1393 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1394 seq_show_option(seq, "usrjquota",
1395 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1396
63189b78
CY		 1397 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1398 seq_show_option(seq, "grpjquota",
1399 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1400
63189b78
CY		 1401 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1402 seq_show_option(seq, "prjjquota",
1403 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1404#endif
1405}
1406
4c8ff709
CY		 1407static inline void f2fs_show_compress_options(struct seq_file *seq,
1408 struct super_block *sb)
1409{
1410 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1411 char *algtype = "";
1412 int i;
1413
1414 if (!f2fs_sb_has_compression(sbi))
1415 return;
1416
1417 switch (F2FS_OPTION(sbi).compress_algorithm) {
1418 case COMPRESS_LZO:
1419 algtype = "lzo";
1420 break;
1421 case COMPRESS_LZ4:
1422 algtype = "lz4";
1423 break;
1424 }
1425 seq_printf(seq, ",compress_algorithm=%s", algtype);
1426
1427 seq_printf(seq, ",compress_log_size=%u",
1428 F2FS_OPTION(sbi).compress_log_size);
1429
1430 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1431 seq_printf(seq, ",compress_extension=%s",
1432 F2FS_OPTION(sbi).extensions[i]);
1433 }
1434}
1435
aff063e2
JK		 1436static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1437{
1438 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1439
6aefd93b
JK		 1440 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1441 if (test_opt(sbi, FORCE_FG_GC))
1442 seq_printf(seq, ",background_gc=%s", "sync");
1443 else
1444 seq_printf(seq, ",background_gc=%s", "on");
1445 } else {
696c018c 1446 seq_printf(seq, ",background_gc=%s", "off");
6aefd93b 1447 }
aff063e2
JK		 1448 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1449 seq_puts(seq, ",disable_roll_forward");
a9117eca
CY		 1450 if (test_opt(sbi, NORECOVERY))
1451 seq_puts(seq, ",norecovery");
aff063e2
JK		 1452 if (test_opt(sbi, DISCARD))
1453 seq_puts(seq, ",discard");
81621f97
ST		 1454 else
1455 seq_puts(seq, ",nodiscard");
aff063e2 1456 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1457 seq_puts(seq, ",no_heap");
1458 else
1459 seq_puts(seq, ",heap");
aff063e2
JK		 1460#ifdef CONFIG_F2FS_FS_XATTR
1461 if (test_opt(sbi, XATTR_USER))
1462 seq_puts(seq, ",user_xattr");
1463 else
1464 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1465 if (test_opt(sbi, INLINE_XATTR))
1466 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1467 else
1468 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1469 if (test_opt(sbi, INLINE_XATTR_SIZE))
1470 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1471 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1472#endif
1473#ifdef CONFIG_F2FS_FS_POSIX_ACL
1474 if (test_opt(sbi, POSIX_ACL))
1475 seq_puts(seq, ",acl");
1476 else
1477 seq_puts(seq, ",noacl");
1478#endif
1479 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1480 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1481 if (test_opt(sbi, INLINE_DATA))
1482 seq_puts(seq, ",inline_data");
75342797
WL		 1483 else
1484 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1485 if (test_opt(sbi, INLINE_DENTRY))
1486 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1487 else
1488 seq_puts(seq, ",noinline_dentry");
b270ad6f 1489 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1490 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1491 if (test_opt(sbi, NOBARRIER))
1492 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1493 if (test_opt(sbi, FASTBOOT))
1494 seq_puts(seq, ",fastboot");
89672159
CY		 1495 if (test_opt(sbi, EXTENT_CACHE))
1496 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1497 else
1498 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1499 if (test_opt(sbi, DATA_FLUSH))
1500 seq_puts(seq, ",data_flush");
36abef4e
JK		 1501
1502 seq_puts(seq, ",mode=");
b0332a0f 1503 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
36abef4e 1504 seq_puts(seq, "adaptive");
b0332a0f 1505 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
36abef4e 1506 seq_puts(seq, "lfs");
63189b78 1507 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1508 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1509 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1510 F2FS_OPTION(sbi).root_reserved_blocks,
1511 from_kuid_munged(&init_user_ns,
1512 F2FS_OPTION(sbi).s_resuid),
1513 from_kgid_munged(&init_user_ns,
1514 F2FS_OPTION(sbi).s_resgid));
ec91538d 1515 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1516 seq_printf(seq, ",io_bits=%u",
1517 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1518#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1519 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1520 seq_printf(seq, ",fault_injection=%u",
63189b78 1521 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1522 seq_printf(seq, ",fault_type=%u",
1523 F2FS_OPTION(sbi).fault_info.inject_type);
1524 }
0cc0dec2 1525#endif
0abd675e 1526#ifdef CONFIG_QUOTA
4b2414d0
CY		 1527 if (test_opt(sbi, QUOTA))
1528 seq_puts(seq, ",quota");
0abd675e
CY		 1529 if (test_opt(sbi, USRQUOTA))
1530 seq_puts(seq, ",usrquota");
1531 if (test_opt(sbi, GRPQUOTA))
1532 seq_puts(seq, ",grpquota");
5c57132e
CY		 1533 if (test_opt(sbi, PRJQUOTA))
1534 seq_puts(seq, ",prjquota");
0cc0dec2 1535#endif
4b2414d0 1536 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1537 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1538 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1539 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1540 seq_printf(seq, ",whint_mode=%s", "fs-based");
643fa961 1541#ifdef CONFIG_FS_ENCRYPTION
ff62af20
SY		 1542 if (F2FS_OPTION(sbi).test_dummy_encryption)
1543 seq_puts(seq, ",test_dummy_encryption");
1544#endif
aff063e2 1545
63189b78 1546 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1547 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1548 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1549 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1550
4354994f 1551 if (test_opt(sbi, DISABLE_CHECKPOINT))
4d3aed70
DR		 1552 seq_printf(seq, ",checkpoint=disable:%u",
1553 F2FS_OPTION(sbi).unusable_cap);
63189b78 1554 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1555 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1556 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1557 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1558 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1559 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
4c8ff709
CY		 1560
1561 f2fs_show_compress_options(seq, sbi->sb);
aff063e2
JK		 1562 return 0;
1563}
1564
498c5e9f
YH		 1565static void default_options(struct f2fs_sb_info *sbi)
1566{
1567 /* init some FS parameters */
63189b78
CY		 1568 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1569 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1570 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1571 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1572 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1573 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1574 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1575 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
4c8ff709
CY		 1576 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZO;
1577 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
1578 F2FS_OPTION(sbi).compress_ext_cnt = 0;
498c5e9f
YH		 1579
1580 set_opt(sbi, BG_GC);
39133a50 1581 set_opt(sbi, INLINE_XATTR);
498c5e9f 1582 set_opt(sbi, INLINE_DATA);
97c1794a 1583 set_opt(sbi, INLINE_DENTRY);
3e72f721 1584 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1585 set_opt(sbi, NOHEAP);
4354994f 1586 clear_opt(sbi, DISABLE_CHECKPOINT);
4d3aed70 1587 F2FS_OPTION(sbi).unusable_cap = 0;
1751e8a6 1588 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1589 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1590 set_opt(sbi, DISCARD);
7beb01f7 1591 if (f2fs_sb_has_blkzoned(sbi))
b0332a0f 1592 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
a39e5365 1593 else
b0332a0f 1594 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
498c5e9f
YH		 1595
1596#ifdef CONFIG_F2FS_FS_XATTR
1597 set_opt(sbi, XATTR_USER);
1598#endif
1599#ifdef CONFIG_F2FS_FS_POSIX_ACL
1600 set_opt(sbi, POSIX_ACL);
1601#endif
36dbd328 1602
d494500a 1603 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1604}
1605
ea676733
JK		 1606#ifdef CONFIG_QUOTA
1607static int f2fs_enable_quotas(struct super_block *sb);
1608#endif
4354994f
DR		 1609
1610static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1611{
812a9597 1612 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1613 struct cp_control cpc;
812a9597
JK		 1614 int err = 0;
1615 int ret;
4d3aed70 1616 block_t unusable;
4354994f 1617
812a9597 1618 if (s_flags & SB_RDONLY) {
dcbb4c10 1619 f2fs_err(sbi, "checkpoint=disable on readonly fs");
812a9597
JK		 1620 return -EINVAL;
1621 }
4354994f
DR		 1622 sbi->sb->s_flags |= SB_ACTIVE;
1623
4354994f
DR		 1624 f2fs_update_time(sbi, DISABLE_TIME);
1625
1626 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
fb24fea7 1627 down_write(&sbi->gc_lock);
4354994f 1628 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1629 if (err == -ENODATA) {
1630 err = 0;
4354994f 1631 break;
812a9597 1632 }
8f31b466 1633 if (err && err != -EAGAIN)
812a9597 1634 break;
4354994f 1635 }
4354994f 1636
812a9597
JK		 1637 ret = sync_filesystem(sbi->sb);
1638 if (ret || err) {
1639 err = ret ? ret: err;
1640 goto restore_flag;
1641 }
4354994f 1642
4d3aed70
DR		 1643 unusable = f2fs_get_unusable_blocks(sbi);
1644 if (f2fs_disable_cp_again(sbi, unusable)) {
812a9597
JK		 1645 err = -EAGAIN;
1646 goto restore_flag;
1647 }
4354994f 1648
fb24fea7 1649 down_write(&sbi->gc_lock);
4354994f
DR		 1650 cpc.reason = CP_PAUSE;
1651 set_sbi_flag(sbi, SBI_CP_DISABLED);
896285ad
CY		 1652 err = f2fs_write_checkpoint(sbi, &cpc);
1653 if (err)
1654 goto out_unlock;
4354994f 1655
c9c8ed50 1656 spin_lock(&sbi->stat_lock);
4d3aed70 1657 sbi->unusable_block_count = unusable;
c9c8ed50
CY		 1658 spin_unlock(&sbi->stat_lock);
1659
896285ad 1660out_unlock:
fb24fea7 1661 up_write(&sbi->gc_lock);
812a9597 1662restore_flag:
7a88ddb5 1663 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
812a9597 1664 return err;
4354994f
DR		 1665}
1666
1667static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1668{
fb24fea7 1669 down_write(&sbi->gc_lock);
4354994f
DR		 1670 f2fs_dirty_to_prefree(sbi);
1671
1672 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1673 set_sbi_flag(sbi, SBI_IS_DIRTY);
fb24fea7 1674 up_write(&sbi->gc_lock);
4354994f
DR		 1675
1676 f2fs_sync_fs(sbi->sb, 1);
1677}
1678
696c018c
NJ		 1679static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1680{
1681 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1682 struct f2fs_mount_info org_mount_opt;
0abd675e 1683 unsigned long old_sb_flags;
63189b78 1684 int err;
876dc59e
GZ		 1685 bool need_restart_gc = false;
1686 bool need_stop_gc = false;
9cd81ce3 1687 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f 1688 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1f78adfa 1689 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
4354994f 1690 bool checkpoint_changed;
4b2414d0 1691#ifdef CONFIG_QUOTA
4b2414d0
CY		 1692 int i, j;
1693#endif
696c018c
NJ		 1694
1695 /*
1696 * Save the old mount options in case we
1697 * need to restore them.
1698 */
1699 org_mount_opt = sbi->mount_opt;
0abd675e 1700 old_sb_flags = sb->s_flags;
696c018c 1701
4b2414d0 1702#ifdef CONFIG_QUOTA
63189b78 1703 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1704 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1705 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1706 org_mount_opt.s_qf_names[i] =
1707 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1708 GFP_KERNEL);
1709 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1710 for (j = 0; j < i; j++)
5222595d 1711 kvfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1712 return -ENOMEM;
1713 }
1714 } else {
63189b78 1715 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1716 }
1717 }
1718#endif
1719
df728b0f 1720 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1721 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f 1722 err = f2fs_commit_super(sbi, false);
dcbb4c10
JP		 1723 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1724 err);
df728b0f
JK		 1725 if (!err)
1726 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1727 }
1728
498c5e9f 1729 default_options(sbi);
26666c8a 1730
696c018c
NJ		 1731 /* parse mount options */
1732 err = parse_options(sb, data);
1733 if (err)
1734 goto restore_opts;
4354994f
DR		 1735 checkpoint_changed =
1736 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1737
1738 /*
1739 * Previous and new state of filesystem is RO,
876dc59e 1740 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1741 */
1751e8a6 1742 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1743 goto skip;
1744
ea676733 1745#ifdef CONFIG_QUOTA
1751e8a6 1746 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1747 err = dquot_suspend(sb, -1);
1748 if (err < 0)
1749 goto restore_opts;
4354994f 1750 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1751 /* dquot_resume needs RW */
1751e8a6 1752 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1753 if (sb_any_quota_suspended(sb)) {
1754 dquot_resume(sb, -1);
7beb01f7 1755 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1756 err = f2fs_enable_quotas(sb);
1757 if (err)
1758 goto restore_opts;
1759 }
0abd675e 1760 }
ea676733 1761#endif
9cd81ce3
CY		 1762 /* disallow enable/disable extent_cache dynamically */
1763 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1764 err = -EINVAL;
dcbb4c10 1765 f2fs_warn(sbi, "switch extent_cache option is not allowed");
9cd81ce3
CY		 1766 goto restore_opts;
1767 }
1768
1f78adfa
CY		 1769 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
1770 err = -EINVAL;
1771 f2fs_warn(sbi, "switch io_bits option is not allowed");
1772 goto restore_opts;
1773 }
1774
4354994f
DR		 1775 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1776 err = -EINVAL;
dcbb4c10 1777 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
4354994f
DR		 1778 goto restore_opts;
1779 }
1780
696c018c
NJ		 1781 /*
1782 * We stop the GC thread if FS is mounted as RO
1783 * or if background_gc = off is passed in mount
1784 * option. Also sync the filesystem.
1785 */
1751e8a6 1786 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
696c018c 1787 if (sbi->gc_thread) {
4d57b86d 1788 f2fs_stop_gc_thread(sbi);
876dc59e 1789 need_restart_gc = true;
696c018c 1790 }
aba291b3 1791 } else if (!sbi->gc_thread) {
4d57b86d 1792 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1793 if (err)
1794 goto restore_opts;
876dc59e
GZ		 1795 need_stop_gc = true;
1796 }
1797
63189b78
CY		 1798 if (*flags & SB_RDONLY ||
1799 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1800 writeback_inodes_sb(sb, WB_REASON_SYNC);
1801 sync_inodes_sb(sb);
1802
1803 set_sbi_flag(sbi, SBI_IS_DIRTY);
1804 set_sbi_flag(sbi, SBI_IS_CLOSE);
1805 f2fs_sync_fs(sb, 1);
1806 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1807 }
1808
4354994f
DR		 1809 if (checkpoint_changed) {
1810 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1811 err = f2fs_disable_checkpoint(sbi);
1812 if (err)
1813 goto restore_gc;
1814 } else {
1815 f2fs_enable_checkpoint(sbi);
1816 }
1817 }
1818
876dc59e
GZ		 1819 /*
1820 * We stop issue flush thread if FS is mounted as RO
1821 * or if flush_merge is not passed in mount option.
1822 */
1751e8a6 1823 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1824 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1825 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1826 } else {
4d57b86d 1827 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1828 if (err)
a688b9d9 1829 goto restore_gc;
696c018c
NJ		 1830 }
1831skip:
4b2414d0
CY		 1832#ifdef CONFIG_QUOTA
1833 /* Release old quota file names */
1834 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1835 kvfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1836#endif
696c018c 1837 /* Update the POSIXACL Flag */
1751e8a6
LT		 1838 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1839 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1840
7e65be49 1841 limit_reserve_root(sbi);
095680f2 1842 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1843 return 0;
876dc59e
GZ		 1844restore_gc:
1845 if (need_restart_gc) {
4d57b86d 1846 if (f2fs_start_gc_thread(sbi))
dcbb4c10 1847 f2fs_warn(sbi, "background gc thread has stopped");
876dc59e 1848 } else if (need_stop_gc) {
4d57b86d 1849 f2fs_stop_gc_thread(sbi);
876dc59e 1850 }
696c018c 1851restore_opts:
4b2414d0 1852#ifdef CONFIG_QUOTA
63189b78 1853 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1854 for (i = 0; i < MAXQUOTAS; i++) {
5222595d 1855 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 1856 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1857 }
1858#endif
696c018c 1859 sbi->mount_opt = org_mount_opt;
0abd675e 1860 sb->s_flags = old_sb_flags;
696c018c
NJ		 1861 return err;
1862}
1863
0abd675e
CY		 1864#ifdef CONFIG_QUOTA
1865/* Read data from quotafile */
1866static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1867 size_t len, loff_t off)
1868{
1869 struct inode *inode = sb_dqopt(sb)->files[type];
1870 struct address_space *mapping = inode->i_mapping;
1871 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1872 int offset = off & (sb->s_blocksize - 1);
1873 int tocopy;
1874 size_t toread;
1875 loff_t i_size = i_size_read(inode);
1876 struct page *page;
1877 char *kaddr;
1878
1879 if (off > i_size)
1880 return 0;
1881
1882 if (off + len > i_size)
1883 len = i_size - off;
1884 toread = len;
1885 while (toread > 0) {
1886 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1887repeat:
02117b8a 1888 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1889 if (IS_ERR(page)) {
1890 if (PTR_ERR(page) == -ENOMEM) {
1891 congestion_wait(BLK_RW_ASYNC, HZ/50);
1892 goto repeat;
1893 }
af033b2a 1894 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1895 return PTR_ERR(page);
4e46a023 1896 }
0abd675e
CY		 1897
1898 lock_page(page);
1899
1900 if (unlikely(page->mapping != mapping)) {
1901 f2fs_put_page(page, 1);
1902 goto repeat;
1903 }
1904 if (unlikely(!PageUptodate(page))) {
1905 f2fs_put_page(page, 1);
af033b2a 1906 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1907 return -EIO;
1908 }
1909
1910 kaddr = kmap_atomic(page);
1911 memcpy(data, kaddr + offset, tocopy);
1912 kunmap_atomic(kaddr);
1913 f2fs_put_page(page, 1);
1914
1915 offset = 0;
1916 toread -= tocopy;
1917 data += tocopy;
1918 blkidx++;
1919 }
1920 return len;
1921}
1922
1923/* Write to quotafile */
1924static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1925 const char *data, size_t len, loff_t off)
1926{
1927 struct inode *inode = sb_dqopt(sb)->files[type];
1928 struct address_space *mapping = inode->i_mapping;
1929 const struct address_space_operations *a_ops = mapping->a_ops;
1930 int offset = off & (sb->s_blocksize - 1);
1931 size_t towrite = len;
1932 struct page *page;
1933 char *kaddr;
1934 int err = 0;
1935 int tocopy;
1936
1937 while (towrite > 0) {
1938 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1939 towrite);
4e46a023 1940retry:
0abd675e
CY		 1941 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1942 &page, NULL);
4e46a023
JK		 1943 if (unlikely(err)) {
1944 if (err == -ENOMEM) {
1945 congestion_wait(BLK_RW_ASYNC, HZ/50);
1946 goto retry;
1947 }
af033b2a 1948 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1949 break;
4e46a023 1950 }
0abd675e
CY		 1951
1952 kaddr = kmap_atomic(page);
1953 memcpy(kaddr + offset, data, tocopy);
1954 kunmap_atomic(kaddr);
1955 flush_dcache_page(page);
1956
1957 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1958 page, NULL);
1959 offset = 0;
1960 towrite -= tocopy;
1961 off += tocopy;
1962 data += tocopy;
1963 cond_resched();
1964 }
1965
1966 if (len == towrite)
6e5b5d41 1967 return err;
0abd675e
CY		 1968 inode->i_mtime = inode->i_ctime = current_time(inode);
1969 f2fs_mark_inode_dirty_sync(inode, false);
1970 return len - towrite;
1971}
1972
1973static struct dquot **f2fs_get_dquots(struct inode *inode)
1974{
1975 return F2FS_I(inode)->i_dquot;
1976}
1977
1978static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1979{
1980 return &F2FS_I(inode)->i_reserved_quota;
1981}
1982
4b2414d0
CY		 1983static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1984{
af033b2a 1985 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1986 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
af033b2a
CY		 1987 return 0;
1988 }
1989
63189b78
CY		 1990 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1991 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1992}
1993
ea676733 1994int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1995{
ea676733
JK		 1996 int enabled = 0;
1997 int i, err;
1998
7beb01f7 1999 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 2000 err = f2fs_enable_quotas(sbi->sb);
2001 if (err) {
dcbb4c10 2002 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
ea676733
JK		 2003 return 0;
2004 }
2005 return 1;
2006 }
4b2414d0
CY		 2007
2008 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 2009 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 2010 err = f2fs_quota_on_mount(sbi, i);
2011 if (!err) {
2012 enabled = 1;
2013 continue;
2014 }
dcbb4c10
JP		 2015 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2016 err, i);
4b2414d0
CY		 2017 }
2018 }
ea676733
JK		 2019 return enabled;
2020}
2021
2022static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2023 unsigned int flags)
2024{
2025 struct inode *qf_inode;
2026 unsigned long qf_inum;
2027 int err;
2028
7beb01f7 2029 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 2030
2031 qf_inum = f2fs_qf_ino(sb, type);
2032 if (!qf_inum)
2033 return -EPERM;
2034
2035 qf_inode = f2fs_iget(sb, qf_inum);
2036 if (IS_ERR(qf_inode)) {
dcbb4c10 2037 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
ea676733
JK		 2038 return PTR_ERR(qf_inode);
2039 }
2040
2041 /* Don't account quota for quota files to avoid recursion */
2042 qf_inode->i_flags |= S_NOQUOTA;
7212b95e 2043 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
ea676733
JK		 2044 iput(qf_inode);
2045 return err;
2046}
2047
2048static int f2fs_enable_quotas(struct super_block *sb)
2049{
dcbb4c10 2050 struct f2fs_sb_info *sbi = F2FS_SB(sb);
ea676733
JK		 2051 int type, err = 0;
2052 unsigned long qf_inum;
2053 bool quota_mopt[MAXQUOTAS] = {
dcbb4c10
JP		 2054 test_opt(sbi, USRQUOTA),
2055 test_opt(sbi, GRPQUOTA),
2056 test_opt(sbi, PRJQUOTA),
ea676733
JK		 2057 };
2058
af033b2a 2059 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 2060 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
af033b2a
CY		 2061 return 0;
2062 }
2063
2064 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2065
ea676733
JK		 2066 for (type = 0; type < MAXQUOTAS; type++) {
2067 qf_inum = f2fs_qf_ino(sb, type);
2068 if (qf_inum) {
2069 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2070 DQUOT_USAGE_ENABLED |
2071 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2072 if (err) {
dcbb4c10
JP		 2073 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2074 type, err);
ea676733
JK		 2075 for (type--; type >= 0; type--)
2076 dquot_quota_off(sb, type);
af033b2a
CY		 2077 set_sbi_flag(F2FS_SB(sb),
2078 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 2079 return err;
2080 }
4b2414d0
CY		 2081 }
2082 }
ea676733 2083 return 0;
4b2414d0
CY		 2084}
2085
af033b2a 2086int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 2087{
af033b2a 2088 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 2089 struct quota_info *dqopt = sb_dqopt(sb);
2090 int cnt;
2091 int ret;
2092
db6ec53b
JK		 2093 /*
2094 * do_quotactl
2095 * f2fs_quota_sync
2096 * down_read(quota_sem)
2097 * dquot_writeback_dquots()
2098 * f2fs_dquot_commit
2099 * block_operation
2100 * down_read(quota_sem)
2101 */
2102 f2fs_lock_op(sbi);
2103
2104 down_read(&sbi->quota_sem);
0abd675e
CY		 2105 ret = dquot_writeback_dquots(sb, type);
2106 if (ret)
af033b2a 2107 goto out;
0abd675e
CY		 2108
2109 /*
2110 * Now when everything is written we can discard the pagecache so
2111 * that userspace sees the changes.
2112 */
2113 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 2114 struct address_space *mapping;
2115
0abd675e
CY		 2116 if (type != -1 && cnt != type)
2117 continue;
2118 if (!sb_has_quota_active(sb, cnt))
2119 continue;
2120
af033b2a
CY		 2121 mapping = dqopt->files[cnt]->i_mapping;
2122
2123 ret = filemap_fdatawrite(mapping);
0abd675e 2124 if (ret)
af033b2a
CY		 2125 goto out;
2126
2127 /* if we are using journalled quota */
2128 if (is_journalled_quota(sbi))
2129 continue;
2130
2131 ret = filemap_fdatawait(mapping);
2132 if (ret)
2133 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 2134
2135 inode_lock(dqopt->files[cnt]);
2136 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
2137 inode_unlock(dqopt->files[cnt]);
2138 }
af033b2a
CY		 2139out:
2140 if (ret)
2141 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
db6ec53b
JK		 2142 up_read(&sbi->quota_sem);
2143 f2fs_unlock_op(sbi);
af033b2a 2144 return ret;
0abd675e
CY		 2145}
2146
2147static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2148 const struct path *path)
2149{
2150 struct inode *inode;
2151 int err;
2152
fe973b06
CY		 2153 /* if quota sysfile exists, deny enabling quota with specific file */
2154 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2155 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2156 return -EBUSY;
2157 }
2158
9a20d391 2159 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 2160 if (err)
2161 return err;
2162
2163 err = dquot_quota_on(sb, type, format_id, path);
2164 if (err)
2165 return err;
2166
2167 inode = d_inode(path->dentry);
2168
2169 inode_lock(inode);
59c84408 2170 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 2171 f2fs_set_inode_flags(inode);
0abd675e
CY		 2172 inode_unlock(inode);
2173 f2fs_mark_inode_dirty_sync(inode, false);
2174
2175 return 0;
2176}
2177
fe973b06 2178static int __f2fs_quota_off(struct super_block *sb, int type)
0abd675e
CY		 2179{
2180 struct inode *inode = sb_dqopt(sb)->files[type];
2181 int err;
2182
2183 if (!inode || !igrab(inode))
2184 return dquot_quota_off(sb, type);
2185
cda9cc59
YH		 2186 err = f2fs_quota_sync(sb, type);
2187 if (err)
2188 goto out_put;
0abd675e
CY		 2189
2190 err = dquot_quota_off(sb, type);
7beb01f7 2191 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2192 goto out_put;
2193
2194 inode_lock(inode);
59c84408 2195 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2196 f2fs_set_inode_flags(inode);
0abd675e
CY		 2197 inode_unlock(inode);
2198 f2fs_mark_inode_dirty_sync(inode, false);
2199out_put:
2200 iput(inode);
2201 return err;
2202}
2203
fe973b06
CY		 2204static int f2fs_quota_off(struct super_block *sb, int type)
2205{
2206 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2207 int err;
2208
2209 err = __f2fs_quota_off(sb, type);
2210
2211 /*
2212 * quotactl can shutdown journalled quota, result in inconsistence
2213 * between quota record and fs data by following updates, tag the
2214 * flag to let fsck be aware of it.
2215 */
2216 if (is_journalled_quota(sbi))
2217 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2218 return err;
2219}
2220
4b2414d0 2221void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2222{
2223 int type;
cda9cc59
YH		 2224 int err;
2225
2226 for (type = 0; type < MAXQUOTAS; type++) {
fe973b06 2227 err = __f2fs_quota_off(sb, type);
cda9cc59
YH		 2228 if (err) {
2229 int ret = dquot_quota_off(sb, type);
0abd675e 2230
dcbb4c10
JP		 2231 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2232 type, err, ret);
af033b2a 2233 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2234 }
2235 }
0e0667b6
JK		 2236 /*
2237 * In case of checkpoint=disable, we must flush quota blocks.
2238 * This can cause NULL exception for node_inode in end_io, since
2239 * put_super already dropped it.
2240 */
2241 sync_filesystem(sb);
0abd675e
CY		 2242}
2243
26b5a079
SY		 2244static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2245{
2246 struct quota_info *dqopt = sb_dqopt(sb);
2247 int type;
2248
2249 for (type = 0; type < MAXQUOTAS; type++) {
2250 if (!dqopt->files[type])
2251 continue;
2252 f2fs_inode_synced(dqopt->files[type]);
2253 }
2254}
2255
af033b2a
CY		 2256static int f2fs_dquot_commit(struct dquot *dquot)
2257{
db6ec53b 2258 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2259 int ret;
2260
2c4e0c52 2261 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
af033b2a
CY		 2262 ret = dquot_commit(dquot);
2263 if (ret < 0)
db6ec53b
JK		 2264 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2265 up_read(&sbi->quota_sem);
af033b2a
CY		 2266 return ret;
2267}
2268
2269static int f2fs_dquot_acquire(struct dquot *dquot)
2270{
db6ec53b 2271 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2272 int ret;
2273
db6ec53b 2274 down_read(&sbi->quota_sem);
af033b2a
CY		 2275 ret = dquot_acquire(dquot);
2276 if (ret < 0)
db6ec53b
JK		 2277 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2278 up_read(&sbi->quota_sem);
af033b2a
CY		 2279 return ret;
2280}
2281
2282static int f2fs_dquot_release(struct dquot *dquot)
2283{
db6ec53b 2284 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2c4e0c52 2285 int ret = dquot_release(dquot);
af033b2a 2286
af033b2a 2287 if (ret < 0)
db6ec53b 2288 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2289 return ret;
2290}
2291
2292static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2293{
2294 struct super_block *sb = dquot->dq_sb;
2295 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2296 int ret = dquot_mark_dquot_dirty(dquot);
af033b2a
CY		 2297
2298 /* if we are using journalled quota */
2299 if (is_journalled_quota(sbi))
2300 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2301
2302 return ret;
2303}
2304
2305static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2306{
db6ec53b 2307 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2308 int ret = dquot_commit_info(sb, type);
af033b2a 2309
af033b2a 2310 if (ret < 0)
db6ec53b 2311 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2312 return ret;
2313}
26b5a079 2314
94b1e10e 2315static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2316{
2317 *projid = F2FS_I(inode)->i_projid;
2318 return 0;
2319}
2320
0abd675e
CY		 2321static const struct dquot_operations f2fs_quota_operations = {
2322 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2323 .write_dquot = f2fs_dquot_commit,
2324 .acquire_dquot = f2fs_dquot_acquire,
2325 .release_dquot = f2fs_dquot_release,
2326 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2327 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2328 .alloc_dquot = dquot_alloc,
2329 .destroy_dquot = dquot_destroy,
5c57132e 2330 .get_projid = f2fs_get_projid,
0abd675e
CY		 2331 .get_next_id = dquot_get_next_id,
2332};
2333
2334static const struct quotactl_ops f2fs_quotactl_ops = {
2335 .quota_on = f2fs_quota_on,
2336 .quota_off = f2fs_quota_off,
2337 .quota_sync = f2fs_quota_sync,
2338 .get_state = dquot_get_state,
2339 .set_info = dquot_set_dqinfo,
2340 .get_dqblk = dquot_get_dqblk,
2341 .set_dqblk = dquot_set_dqblk,
2342 .get_nextdqblk = dquot_get_next_dqblk,
2343};
2344#else
af033b2a
CY		 2345int f2fs_quota_sync(struct super_block *sb, int type)
2346{
2347 return 0;
2348}
2349
4b2414d0 2350void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2351{
2352}
2353#endif
2354
f62fc9f9 2355static const struct super_operations f2fs_sops = {
aff063e2 2356 .alloc_inode = f2fs_alloc_inode,
d01718a0 2357 .free_inode = f2fs_free_inode,
531ad7d5 2358 .drop_inode = f2fs_drop_inode,
aff063e2 2359 .write_inode = f2fs_write_inode,
b3783873 2360 .dirty_inode = f2fs_dirty_inode,
aff063e2 2361 .show_options = f2fs_show_options,
0abd675e
CY		 2362#ifdef CONFIG_QUOTA
2363 .quota_read = f2fs_quota_read,
2364 .quota_write = f2fs_quota_write,
2365 .get_dquots = f2fs_get_dquots,
2366#endif
aff063e2
JK		 2367 .evict_inode = f2fs_evict_inode,
2368 .put_super = f2fs_put_super,
2369 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2370 .freeze_fs = f2fs_freeze,
2371 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2372 .statfs = f2fs_statfs,
696c018c 2373 .remount_fs = f2fs_remount,
aff063e2
JK		 2374};
2375
643fa961 2376#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 2377static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2378{
2379 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2380 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2381 ctx, len, NULL);
2382}
2383
2384static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2385 void *fs_data)
2386{
b7c409de
SY		 2387 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2388
2389 /*
2390 * Encrypting the root directory is not allowed because fsck
2391 * expects lost+found directory to exist and remain unencrypted
2392 * if LOST_FOUND feature is enabled.
2393 *
2394 */
7beb01f7 2395 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2396 inode->i_ino == F2FS_ROOT_INO(sbi))
2397 return -EPERM;
2398
0b81d077
JK		 2399 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2400 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2401 ctx, len, fs_data, XATTR_CREATE);
2402}
2403
ff62af20
SY		 2404static bool f2fs_dummy_context(struct inode *inode)
2405{
2406 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2407}
2408
0eee17e3
EB		 2409static bool f2fs_has_stable_inodes(struct super_block *sb)
2410{
2411 return true;
2412}
2413
2414static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
2415 int *ino_bits_ret, int *lblk_bits_ret)
2416{
2417 *ino_bits_ret = 8 * sizeof(nid_t);
2418 *lblk_bits_ret = 8 * sizeof(block_t);
2419}
2420
6f69f0ed 2421static const struct fscrypt_operations f2fs_cryptops = {
0eee17e3
EB		 2422 .key_prefix = "f2fs:",
2423 .get_context = f2fs_get_context,
2424 .set_context = f2fs_set_context,
2425 .dummy_context = f2fs_dummy_context,
2426 .empty_dir = f2fs_empty_dir,
2427 .max_namelen = F2FS_NAME_LEN,
2428 .has_stable_inodes = f2fs_has_stable_inodes,
2429 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
0b81d077 2430};
0b81d077
JK		 2431#endif
2432
aff063e2
JK		 2433static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2434 u64 ino, u32 generation)
2435{
2436 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2437 struct inode *inode;
2438
4d57b86d 2439 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2440 return ERR_PTR(-ESTALE);
aff063e2
JK		 2441
2442 /*
2443 * f2fs_iget isn't quite right if the inode is currently unallocated!
2444 * However f2fs_iget currently does appropriate checks to handle stale
2445 * inodes so everything is OK.
2446 */
2447 inode = f2fs_iget(sb, ino);
2448 if (IS_ERR(inode))
2449 return ERR_CAST(inode);
6bacf52f 2450 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2451 /* we didn't find the right inode.. */
2452 iput(inode);
2453 return ERR_PTR(-ESTALE);
2454 }
2455 return inode;
2456}
2457
2458static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2459 int fh_len, int fh_type)
2460{
2461 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2462 f2fs_nfs_get_inode);
2463}
2464
2465static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2466 int fh_len, int fh_type)
2467{
2468 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2469 f2fs_nfs_get_inode);
2470}
2471
2472static const struct export_operations f2fs_export_ops = {
2473 .fh_to_dentry = f2fs_fh_to_dentry,
2474 .fh_to_parent = f2fs_fh_to_parent,
2475 .get_parent = f2fs_get_parent,
2476};
2477
e0afc4d6 2478static loff_t max_file_blocks(void)
aff063e2 2479{
7a2af766 2480 loff_t result = 0;
d02a6e61 2481 loff_t leaf_count = DEF_ADDRS_PER_BLOCK;
aff063e2 2482
7a2af766
CY		 2483 /*
2484 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2485 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2486 * space in inode.i_addr, it will be more safe to reassign
2487 * result as zero.
2488 */
2489
aff063e2
JK		 2490 /* two direct node blocks */
2491 result += (leaf_count * 2);
2492
2493 /* two indirect node blocks */
2494 leaf_count *= NIDS_PER_BLOCK;
2495 result += (leaf_count * 2);
2496
2497 /* one double indirect node block */
2498 leaf_count *= NIDS_PER_BLOCK;
2499 result += leaf_count;
2500
aff063e2
JK		 2501 return result;
2502}
2503
fd694733
JK		 2504static int __f2fs_commit_super(struct buffer_head *bh,
2505 struct f2fs_super_block *super)
2506{
2507 lock_buffer(bh);
2508 if (super)
2509 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2510 set_buffer_dirty(bh);
2511 unlock_buffer(bh);
2512
2513 /* it's rare case, we can do fua all the time */
3adc5fcb 2514 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2515}
2516
df728b0f 2517static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2518 struct buffer_head *bh)
9a59b62f 2519{
fd694733
JK		 2520 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2521 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2522 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2523 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2524 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2525 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2526 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2527 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2528 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2529 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2530 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2531 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2532 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2533 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2534 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2535 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2536 u64 main_end_blkaddr = main_blkaddr +
2537 (segment_count_main << log_blocks_per_seg);
2538 u64 seg_end_blkaddr = segment0_blkaddr +
2539 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2540
2541 if (segment0_blkaddr != cp_blkaddr) {
dcbb4c10
JP		 2542 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2543 segment0_blkaddr, cp_blkaddr);
9a59b62f
CY		 2544 return true;
2545 }
2546
2547 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2548 sit_blkaddr) {
dcbb4c10
JP		 2549 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2550 cp_blkaddr, sit_blkaddr,
2551 segment_count_ckpt << log_blocks_per_seg);
9a59b62f
CY		 2552 return true;
2553 }
2554
2555 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2556 nat_blkaddr) {
dcbb4c10
JP		 2557 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2558 sit_blkaddr, nat_blkaddr,
2559 segment_count_sit << log_blocks_per_seg);
9a59b62f
CY		 2560 return true;
2561 }
2562
2563 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2564 ssa_blkaddr) {
dcbb4c10
JP		 2565 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2566 nat_blkaddr, ssa_blkaddr,
2567 segment_count_nat << log_blocks_per_seg);
9a59b62f
CY		 2568 return true;
2569 }
2570
2571 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2572 main_blkaddr) {
dcbb4c10
JP		 2573 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2574 ssa_blkaddr, main_blkaddr,
2575 segment_count_ssa << log_blocks_per_seg);
9a59b62f
CY		 2576 return true;
2577 }
2578
fd694733 2579 if (main_end_blkaddr > seg_end_blkaddr) {
dcbb4c10
JP		 2580 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2581 main_blkaddr,
2582 segment0_blkaddr +
2583 (segment_count << log_blocks_per_seg),
2584 segment_count_main << log_blocks_per_seg);
9a59b62f 2585 return true;
fd694733
JK		 2586 } else if (main_end_blkaddr < seg_end_blkaddr) {
2587 int err = 0;
2588 char *res;
2589
2590 /* fix in-memory information all the time */
2591 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2592 segment0_blkaddr) >> log_blocks_per_seg);
2593
2594 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2595 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2596 res = "internally";
2597 } else {
2598 err = __f2fs_commit_super(bh, NULL);
2599 res = err ? "failed" : "done";
2600 }
dcbb4c10
JP		 2601 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2602 res, main_blkaddr,
2603 segment0_blkaddr +
2604 (segment_count << log_blocks_per_seg),
2605 segment_count_main << log_blocks_per_seg);
fd694733
JK		 2606 if (err)
2607 return true;
9a59b62f 2608 }
9a59b62f
CY		 2609 return false;
2610}
2611
df728b0f 2612static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2613 struct buffer_head *bh)
aff063e2 2614{
0cfe75c5
JK		 2615 block_t segment_count, segs_per_sec, secs_per_zone;
2616 block_t total_sections, blocks_per_seg;
fd694733
JK		 2617 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2618 (bh->b_data + F2FS_SUPER_OFFSET);
aff063e2 2619 unsigned int blocksize;
d440c52d
JZ		 2620 size_t crc_offset = 0;
2621 __u32 crc = 0;
2622
38fb6d0e
IZ		 2623 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2624 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2625 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2626 return -EINVAL;
2627 }
2628
d440c52d 2629 /* Check checksum_offset and crc in superblock */
7beb01f7 2630 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2631 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2632 if (crc_offset !=
2633 offsetof(struct f2fs_super_block, crc)) {
dcbb4c10
JP		 2634 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2635 crc_offset);
38fb6d0e 2636 return -EFSCORRUPTED;
d440c52d
JZ		 2637 }
2638 crc = le32_to_cpu(raw_super->crc);
2639 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
dcbb4c10 2640 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
38fb6d0e 2641 return -EFSCORRUPTED;
d440c52d
JZ		 2642 }
2643 }
aff063e2 2644
5c9b4692 2645 /* Currently, support only 4KB page cache size */
09cbfeaf 2646 if (F2FS_BLKSIZE != PAGE_SIZE) {
dcbb4c10
JP		 2647 f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
2648 PAGE_SIZE);
38fb6d0e 2649 return -EFSCORRUPTED;
5c9b4692 2650 }
2651
aff063e2
JK		 2652 /* Currently, support only 4KB block size */
2653 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2654 if (blocksize != F2FS_BLKSIZE) {
dcbb4c10
JP		 2655 f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
2656 blocksize);
38fb6d0e 2657 return -EFSCORRUPTED;
a07ef784 2658 }
5c9b4692 2659
9a59b62f
CY		 2660 /* check log blocks per segment */
2661 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
dcbb4c10
JP		 2662 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2663 le32_to_cpu(raw_super->log_blocks_per_seg));
38fb6d0e 2664 return -EFSCORRUPTED;
9a59b62f
CY		 2665 }
2666
55cf9cb6
CY		 2667 /* Currently, support 512/1024/2048/4096 bytes sector size */
2668 if (le32_to_cpu(raw_super->log_sectorsize) >
2669 F2FS_MAX_LOG_SECTOR_SIZE ||
2670 le32_to_cpu(raw_super->log_sectorsize) <
2671 F2FS_MIN_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2672 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2673 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2674 return -EFSCORRUPTED;
a07ef784 2675 }
55cf9cb6
CY		 2676 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2677 le32_to_cpu(raw_super->log_sectorsize) !=
2678 F2FS_MAX_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2679 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
2680 le32_to_cpu(raw_super->log_sectors_per_block),
2681 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2682 return -EFSCORRUPTED;
a07ef784 2683 }
9a59b62f 2684
0cfe75c5
JK		 2685 segment_count = le32_to_cpu(raw_super->segment_count);
2686 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2687 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2688 total_sections = le32_to_cpu(raw_super->section_count);
2689
2690 /* blocks_per_seg should be 512, given the above check */
2691 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2692
2693 if (segment_count > F2FS_MAX_SEGMENT ||
2694 segment_count < F2FS_MIN_SEGMENTS) {
dcbb4c10 2695 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
38fb6d0e 2696 return -EFSCORRUPTED;
0cfe75c5
JK		 2697 }
2698
2699 if (total_sections > segment_count ||
2700 total_sections < F2FS_MIN_SEGMENTS ||
2701 segs_per_sec > segment_count || !segs_per_sec) {
dcbb4c10
JP		 2702 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
2703 segment_count, total_sections, segs_per_sec);
38fb6d0e 2704 return -EFSCORRUPTED;
0cfe75c5
JK		 2705 }
2706
2707 if ((segment_count / segs_per_sec) < total_sections) {
dcbb4c10
JP		 2708 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
2709 segment_count, segs_per_sec, total_sections);
38fb6d0e 2710 return -EFSCORRUPTED;
0cfe75c5
JK		 2711 }
2712
88960068 2713 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
dcbb4c10
JP		 2714 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
2715 segment_count, le64_to_cpu(raw_super->block_count));
38fb6d0e 2716 return -EFSCORRUPTED;
0cfe75c5
JK		 2717 }
2718
9f701f6c
QS		 2719 if (RDEV(0).path[0]) {
2720 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
2721 int i = 1;
2722
2723 while (i < MAX_DEVICES && RDEV(i).path[0]) {
2724 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
2725 i++;
2726 }
2727 if (segment_count != dev_seg_count) {
2728 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
2729 segment_count, dev_seg_count);
2730 return -EFSCORRUPTED;
2731 }
2732 }
2733
42bf546c 2734 if (secs_per_zone > total_sections || !secs_per_zone) {
dcbb4c10
JP		 2735 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
2736 secs_per_zone, total_sections);
38fb6d0e 2737 return -EFSCORRUPTED;
0cfe75c5
JK		 2738 }
2739 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2740 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2741 (le32_to_cpu(raw_super->extension_count) +
2742 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
dcbb4c10
JP		 2743 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
2744 le32_to_cpu(raw_super->extension_count),
2745 raw_super->hot_ext_count,
2746 F2FS_MAX_EXTENSION);
38fb6d0e 2747 return -EFSCORRUPTED;
0cfe75c5
JK		 2748 }
2749
2750 if (le32_to_cpu(raw_super->cp_payload) >
2751 (blocks_per_seg - F2FS_CP_PACKS)) {
dcbb4c10
JP		 2752 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
2753 le32_to_cpu(raw_super->cp_payload),
2754 blocks_per_seg - F2FS_CP_PACKS);
38fb6d0e 2755 return -EFSCORRUPTED;
0cfe75c5
JK		 2756 }
2757
9a59b62f
CY		 2758 /* check reserved ino info */
2759 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2760 le32_to_cpu(raw_super->meta_ino) != 2 ||
2761 le32_to_cpu(raw_super->root_ino) != 3) {
dcbb4c10
JP		 2762 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2763 le32_to_cpu(raw_super->node_ino),
2764 le32_to_cpu(raw_super->meta_ino),
2765 le32_to_cpu(raw_super->root_ino));
38fb6d0e 2766 return -EFSCORRUPTED;
9a59b62f
CY		 2767 }
2768
2769 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2770 if (sanity_check_area_boundary(sbi, bh))
38fb6d0e 2771 return -EFSCORRUPTED;
9a59b62f 2772
aff063e2
JK		 2773 return 0;
2774}
2775
4d57b86d 2776int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2777{
2778 unsigned int total, fsmeta;
577e3495
JK		 2779 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2780 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2781 unsigned int ovp_segments, reserved_segments;
15d3042a 2782 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2783 unsigned int sit_segs, nat_segs;
2784 unsigned int sit_bitmap_size, nat_bitmap_size;
2785 unsigned int log_blocks_per_seg;
9dc956b2 2786 unsigned int segment_count_main;
e494c2f9 2787 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 2788 block_t user_block_count, valid_user_blocks;
2789 block_t avail_node_count, valid_node_count;
042be0f8 2790 int i, j;
aff063e2
JK		 2791
2792 total = le32_to_cpu(raw_super->segment_count);
2793 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2794 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2795 fsmeta += sit_segs;
2796 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2797 fsmeta += nat_segs;
aff063e2
JK		 2798 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2799 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2800
6bacf52f 2801 if (unlikely(fsmeta >= total))
aff063e2 2802 return 1;
577e3495 2803
2040fce8
JK		 2804 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2805 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2806
2807 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2808 ovp_segments == 0 || reserved_segments == 0)) {
dcbb4c10 2809 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2040fce8
JK		 2810 return 1;
2811 }
2812
9dc956b2
CY		 2813 user_block_count = le64_to_cpu(ckpt->user_block_count);
2814 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2815 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2816 if (!user_block_count || user_block_count >=
2817 segment_count_main << log_blocks_per_seg) {
dcbb4c10
JP		 2818 f2fs_err(sbi, "Wrong user_block_count: %u",
2819 user_block_count);
9dc956b2
CY		 2820 return 1;
2821 }
2822
7b63f72f
CY		 2823 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2824 if (valid_user_blocks > user_block_count) {
dcbb4c10
JP		 2825 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
2826 valid_user_blocks, user_block_count);
7b63f72f
CY		 2827 return 1;
2828 }
2829
2830 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
27cae0bc 2831 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
7b63f72f 2832 if (valid_node_count > avail_node_count) {
dcbb4c10
JP		 2833 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
2834 valid_node_count, avail_node_count);
7b63f72f
CY		 2835 return 1;
2836 }
2837
15d3042a
JQ		 2838 main_segs = le32_to_cpu(raw_super->segment_count_main);
2839 blocks_per_seg = sbi->blocks_per_seg;
2840
2841 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2842 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2843 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2844 return 1;
042be0f8
CY		 2845 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2846 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2847 le32_to_cpu(ckpt->cur_node_segno[j])) {
dcbb4c10
JP		 2848 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
2849 i, j,
2850 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2851 return 1;
2852 }
2853 }
15d3042a
JQ		 2854 }
2855 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2856 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2857 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2858 return 1;
042be0f8
CY		 2859 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2860 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2861 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2862 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
2863 i, j,
2864 le32_to_cpu(ckpt->cur_data_segno[i]));
042be0f8
CY		 2865 return 1;
2866 }
2867 }
2868 }
2869 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1166c1f2 2870 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
042be0f8
CY		 2871 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2872 le32_to_cpu(ckpt->cur_data_segno[j])) {
1166c1f2 2873 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
dcbb4c10
JP		 2874 i, j,
2875 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2876 return 1;
2877 }
2878 }
15d3042a
JQ		 2879 }
2880
c77ec61c
CY		 2881 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2882 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2883
2884 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2885 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
dcbb4c10
JP		 2886 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
2887 sit_bitmap_size, nat_bitmap_size);
c77ec61c
CY		 2888 return 1;
2889 }
e494c2f9
CY		 2890
2891 cp_pack_start_sum = __start_sum_addr(sbi);
2892 cp_payload = __cp_payload(sbi);
2893 if (cp_pack_start_sum < cp_payload + 1 ||
2894 cp_pack_start_sum > blocks_per_seg - 1 -
2895 NR_CURSEG_TYPE) {
dcbb4c10
JP		 2896 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
2897 cp_pack_start_sum);
e494c2f9
CY		 2898 return 1;
2899 }
c77ec61c 2900
5dae2d39
CY		 2901 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
2902 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2d008835
CY		 2903 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
2904 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
2905 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
dcbb4c10 2906 le32_to_cpu(ckpt->checksum_offset));
5dae2d39
CY		 2907 return 1;
2908 }
2909
1e968fdf 2910 if (unlikely(f2fs_cp_error(sbi))) {
dcbb4c10 2911 f2fs_err(sbi, "A bug case: need to run fsck");
577e3495
JK		 2912 return 1;
2913 }
aff063e2
JK		 2914 return 0;
2915}
2916
2917static void init_sb_info(struct f2fs_sb_info *sbi)
2918{
2919 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 2920 int i;
aff063e2
JK		 2921
2922 sbi->log_sectors_per_block =
2923 le32_to_cpu(raw_super->log_sectors_per_block);
2924 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2925 sbi->blocksize = 1 << sbi->log_blocksize;
2926 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2927 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2928 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2929 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2930 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2931 sbi->total_node_count =
2932 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2933 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2934 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2935 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2936 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2937 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 2938 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2939 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 2940 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 2941 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 2942
ab9fa662 2943 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2944 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2945 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2946 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2947 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2948 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 2949 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2950 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 2951 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2952
35782b23
JK		 2953 for (i = 0; i < NR_COUNT_TYPE; i++)
2954 atomic_set(&sbi->nr_pages[i], 0);
2955
c29fd0c0
CY		 2956 for (i = 0; i < META; i++)
2957 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2958
2658e50d
JK		 2959 INIT_LIST_HEAD(&sbi->s_list);
2960 mutex_init(&sbi->umount_mutex);
107a805d 2961 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2962 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2963
2964 sbi->dirty_device = 0;
2965 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2966
846ae671 2967 init_rwsem(&sbi->sb_lock);
f5a53edc 2968 init_rwsem(&sbi->pin_sem);
aff063e2
JK		 2969}
2970
523be8a6
JK		 2971static int init_percpu_info(struct f2fs_sb_info *sbi)
2972{
35782b23 2973 int err;
41382ec4 2974
513c5f37
JK		 2975 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2976 if (err)
2977 return err;
2978
4a70e255 2979 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2980 GFP_KERNEL);
4a70e255
CY		 2981 if (err)
2982 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2983
2984 return err;
523be8a6
JK		 2985}
2986
178053e2 2987#ifdef CONFIG_BLK_DEV_ZONED
d4100351
CH		 2988static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
2989 void *data)
2990{
2991 struct f2fs_dev_info *dev = data;
2992
2993 if (zone->type != BLK_ZONE_TYPE_CONVENTIONAL)
2994 set_bit(idx, dev->blkz_seq);
2995 return 0;
2996}
2997
3c62be17 2998static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2999{
3c62be17 3000 struct block_device *bdev = FDEV(devi).bdev;
178053e2 3001 sector_t nr_sectors = bdev->bd_part->nr_sects;
d4100351 3002 int ret;
178053e2 3003
7beb01f7 3004 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 3005 return 0;
3006
3c62be17 3007 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 3008 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 3009 return -EINVAL;
f99e8648 3010 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 3011 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3012 __ilog2_u32(sbi->blocks_per_blkz))
3013 return -EINVAL;
178053e2 3014 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 3015 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3016 sbi->log_blocks_per_blkz;
f99e8648 3017 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 3018 FDEV(devi).nr_blkz++;
178053e2 3019
95175daf
DLM		 3020 FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
3021 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3022 * sizeof(unsigned long),
3023 GFP_KERNEL);
3024 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 3025 return -ENOMEM;
3026
178053e2 3027 /* Get block zones type */
d4100351
CH		 3028 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3029 &FDEV(devi));
3030 if (ret < 0)
3031 return ret;
178053e2 3032
d4100351 3033 return 0;
178053e2
DLM		 3034}
3035#endif
3036
9076a75f
GZ		 3037/*
3038 * Read f2fs raw super block.
2b39e907
SL		 3039 * Because we have two copies of super block, so read both of them
3040 * to get the first valid one. If any one of them is broken, we pass
3041 * them recovery flag back to the caller.
9076a75f 3042 */
df728b0f 3043static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 3044 struct f2fs_super_block **raw_super,
e8240f65 3045 int *valid_super_block, int *recovery)
14d7e9de 3046{
df728b0f 3047 struct super_block *sb = sbi->sb;
2b39e907 3048 int block;
e8240f65 3049 struct buffer_head *bh;
fd694733 3050 struct f2fs_super_block *super;
da554e48 3051 int err = 0;
14d7e9de 3052
b39f0de2
YH		 3053 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3054 if (!super)
3055 return -ENOMEM;
2b39e907
SL		 3056
3057 for (block = 0; block < 2; block++) {
3058 bh = sb_bread(sb, block);
3059 if (!bh) {
dcbb4c10
JP		 3060 f2fs_err(sbi, "Unable to read %dth superblock",
3061 block + 1);
2b39e907 3062 err = -EIO;
ed352042 3063 *recovery = 1;
2b39e907
SL		 3064 continue;
3065 }
14d7e9de 3066
2b39e907 3067 /* sanity checking of raw super */
38fb6d0e
IZ		 3068 err = sanity_check_raw_super(sbi, bh);
3069 if (err) {
dcbb4c10
JP		 3070 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3071 block + 1);
2b39e907 3072 brelse(bh);
ed352042 3073 *recovery = 1;
2b39e907
SL		 3074 continue;
3075 }
14d7e9de 3076
2b39e907 3077 if (!*raw_super) {
fd694733
JK		 3078 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3079 sizeof(*super));
2b39e907
SL		 3080 *valid_super_block = block;
3081 *raw_super = super;
3082 }
3083 brelse(bh);
da554e48 3084 }
3085
da554e48 3086 /* No valid superblock */
2b39e907 3087 if (!*raw_super)
5222595d 3088 kvfree(super);
2b39e907
SL		 3089 else
3090 err = 0;
da554e48 3091
2b39e907 3092 return err;
14d7e9de 3093}
3094
fd694733 3095int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 3096{
5d909cdb 3097 struct buffer_head *bh;
d440c52d 3098 __u32 crc = 0;
26d815ad
JK		 3099 int err;
3100
df728b0f
JK		 3101 if ((recover && f2fs_readonly(sbi->sb)) ||
3102 bdev_read_only(sbi->sb->s_bdev)) {
3103 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 3104 return -EROFS;
df728b0f 3105 }
f2353d7b 3106
d440c52d 3107 /* we should update superblock crc here */
7beb01f7 3108 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 3109 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3110 offsetof(struct f2fs_super_block, crc));
3111 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3112 }
3113
fd694733 3114 /* write back-up superblock first */
0964fc1a 3115 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 3116 if (!bh)
3117 return -EIO;
fd694733 3118 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 3119 brelse(bh);
c5bda1c8
CY		 3120
3121 /* if we are in recovery path, skip writing valid superblock */
3122 if (recover || err)
5d909cdb 3123 return err;
26d815ad
JK		 3124
3125 /* write current valid superblock */
0964fc1a 3126 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 3127 if (!bh)
3128 return -EIO;
3129 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3130 brelse(bh);
3131 return err;
26d815ad
JK		 3132}
3133
3c62be17
JK		 3134static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3135{
3136 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 3137 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 3138 int i;
3139
7bb3a371
MS		 3140 /* Initialize single device information */
3141 if (!RDEV(0).path[0]) {
3142 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 3143 return 0;
7bb3a371
MS		 3144 max_devices = 1;
3145 }
3c62be17 3146
7bb3a371
MS		 3147 /*
3148 * Initialize multiple devices information, or single
3149 * zoned block device information.
3150 */
026f0507
KC		 3151 sbi->devs = f2fs_kzalloc(sbi,
3152 array_size(max_devices,
3153 sizeof(struct f2fs_dev_info)),
3154 GFP_KERNEL);
7bb3a371
MS		 3155 if (!sbi->devs)
3156 return -ENOMEM;
3c62be17 3157
7bb3a371 3158 for (i = 0; i < max_devices; i++) {
3c62be17 3159
7bb3a371
MS		 3160 if (i > 0 && !RDEV(i).path[0])
3161 break;
3162
3163 if (max_devices == 1) {
3164 /* Single zoned block device mount */
3165 FDEV(0).bdev =
3166 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 3167 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 3168 } else {
3169 /* Multi-device mount */
3170 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3171 FDEV(i).total_segments =
3172 le32_to_cpu(RDEV(i).total_segments);
3173 if (i == 0) {
3174 FDEV(i).start_blk = 0;
3175 FDEV(i).end_blk = FDEV(i).start_blk +
3176 (FDEV(i).total_segments <<
3177 sbi->log_blocks_per_seg) - 1 +
3178 le32_to_cpu(raw_super->segment0_blkaddr);
3179 } else {
3180 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3181 FDEV(i).end_blk = FDEV(i).start_blk +
3182 (FDEV(i).total_segments <<
3183 sbi->log_blocks_per_seg) - 1;
3184 }
3185 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 3186 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 3187 }
3c62be17
JK		 3188 if (IS_ERR(FDEV(i).bdev))
3189 return PTR_ERR(FDEV(i).bdev);
3190
3191 /* to release errored devices */
3192 sbi->s_ndevs = i + 1;
3193
3194#ifdef CONFIG_BLK_DEV_ZONED
3195 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3196 !f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3197 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3c62be17
JK		 3198 return -EINVAL;
3199 }
3200 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3201 if (init_blkz_info(sbi, i)) {
dcbb4c10 3202 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3c62be17
JK		 3203 return -EINVAL;
3204 }
7bb3a371
MS		 3205 if (max_devices == 1)
3206 break;
dcbb4c10
JP		 3207 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3208 i, FDEV(i).path,
3209 FDEV(i).total_segments,
3210 FDEV(i).start_blk, FDEV(i).end_blk,
3211 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3212 "Host-aware" : "Host-managed");
3c62be17
JK		 3213 continue;
3214 }
3215#endif
dcbb4c10
JP		 3216 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3217 i, FDEV(i).path,
3218 FDEV(i).total_segments,
3219 FDEV(i).start_blk, FDEV(i).end_blk);
3220 }
3221 f2fs_info(sbi,
3222 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3223 return 0;
3224}
3225
5aba5430
DR		 3226static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3227{
3228#ifdef CONFIG_UNICODE
3229 if (f2fs_sb_has_casefold(sbi) && !sbi->s_encoding) {
3230 const struct f2fs_sb_encodings *encoding_info;
3231 struct unicode_map *encoding;
3232 __u16 encoding_flags;
3233
3234 if (f2fs_sb_has_encrypt(sbi)) {
3235 f2fs_err(sbi,
3236 "Can't mount with encoding and encryption");
3237 return -EINVAL;
3238 }
3239
3240 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3241 &encoding_flags)) {
3242 f2fs_err(sbi,
3243 "Encoding requested by superblock is unknown");
3244 return -EINVAL;
3245 }
3246
3247 encoding = utf8_load(encoding_info->version);
3248 if (IS_ERR(encoding)) {
3249 f2fs_err(sbi,
3250 "can't mount with superblock charset: %s-%s "
3251 "not supported by the kernel. flags: 0x%x.",
3252 encoding_info->name, encoding_info->version,
3253 encoding_flags);
3254 return PTR_ERR(encoding);
3255 }
3256 f2fs_info(sbi, "Using encoding defined by superblock: "
3257 "%s-%s with flags 0x%hx", encoding_info->name,
3258 encoding_info->version?:"\b", encoding_flags);
3259
3260 sbi->s_encoding = encoding;
3261 sbi->s_encoding_flags = encoding_flags;
2c2eb7a3 3262 sbi->sb->s_d_op = &f2fs_dentry_ops;
5aba5430
DR		 3263 }
3264#else
3265 if (f2fs_sb_has_casefold(sbi)) {
3266 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3267 return -EINVAL;
3268 }
3269#endif
3270 return 0;
3271}
3272
84b89e5d
JK		 3273static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3274{
3275 struct f2fs_sm_info *sm_i = SM_I(sbi);
3276
3277 /* adjust parameters according to the volume size */
3278 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3279 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3280 sm_i->dcc_info->discard_granularity = 1;
3281 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3282 }
4cac90d5
CY		 3283
3284 sbi->readdir_ra = 1;
84b89e5d
JK		 3285}
3286
aff063e2
JK		 3287static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3288{
3289 struct f2fs_sb_info *sbi;
da554e48 3290 struct f2fs_super_block *raw_super;
aff063e2 3291 struct inode *root;
99e3e858 3292 int err;
aa2c8c43 3293 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3294 char *options = NULL;
e8240f65 3295 int recovery, i, valid_super_block;
8f1dbbbb 3296 struct curseg_info *seg_i;
aa2c8c43 3297 int retry_cnt = 1;
aff063e2 3298
ed2e621a 3299try_onemore:
da554e48 3300 err = -EINVAL;
3301 raw_super = NULL;
e8240f65 3302 valid_super_block = -1;
da554e48 3303 recovery = 0;
3304
aff063e2
JK		 3305 /* allocate memory for f2fs-specific super block info */
3306 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3307 if (!sbi)
3308 return -ENOMEM;
3309
df728b0f
JK		 3310 sbi->sb = sb;
3311
43b6573b
KM		 3312 /* Load the checksum driver */
3313 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3314 if (IS_ERR(sbi->s_chksum_driver)) {
dcbb4c10 3315 f2fs_err(sbi, "Cannot load crc32 driver.");
43b6573b
KM		 3316 err = PTR_ERR(sbi->s_chksum_driver);
3317 sbi->s_chksum_driver = NULL;
3318 goto free_sbi;
3319 }
3320
ff9234ad 3321 /* set a block size */
6bacf52f 3322 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
dcbb4c10 3323 f2fs_err(sbi, "unable to set blocksize");
aff063e2 3324 goto free_sbi;
a07ef784 3325 }
aff063e2 3326
df728b0f 3327 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3328 &recovery);
9076a75f
GZ		 3329 if (err)
3330 goto free_sbi;
3331
5fb08372 3332 sb->s_fs_info = sbi;
52763a4b
JK		 3333 sbi->raw_super = raw_super;
3334
704956ec 3335 /* precompute checksum seed for metadata */
7beb01f7 3336 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3337 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3338 sizeof(raw_super->uuid));
3339
d1b959c8
DLM		 3340 /*
3341 * The BLKZONED feature indicates that the drive was formatted with
3342 * zone alignment optimization. This is optional for host-aware
3343 * devices, but mandatory for host-managed zoned block devices.
3344 */
3345#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3346 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3347 f2fs_err(sbi, "Zoned block device support is not enabled");
1727f317 3348 err = -EOPNOTSUPP;
d1b959c8
DLM		 3349 goto free_sb_buf;
3350 }
d1b959c8 3351#endif
498c5e9f 3352 default_options(sbi);
aff063e2 3353 /* parse mount options */
dabc4a5c
JK		 3354 options = kstrdup((const char *)data, GFP_KERNEL);
3355 if (data && !options) {
3356 err = -ENOMEM;
aff063e2 3357 goto free_sb_buf;
dabc4a5c
JK		 3358 }
3359
3360 err = parse_options(sb, options);
3361 if (err)
3362 goto free_options;
aff063e2 3363
e0afc4d6
CY		 3364 sbi->max_file_blocks = max_file_blocks();
3365 sb->s_maxbytes = sbi->max_file_blocks <<
3366 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3367 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3368
5aba5430
DR		 3369 err = f2fs_setup_casefold(sbi);
3370 if (err)
3371 goto free_options;
3372
0abd675e
CY		 3373#ifdef CONFIG_QUOTA
3374 sb->dq_op = &f2fs_quota_operations;
bc88ac96 3375 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3376 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3377
7beb01f7 3378 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3379 for (i = 0; i < MAXQUOTAS; i++) {
3380 if (f2fs_qf_ino(sbi->sb, i))
3381 sbi->nquota_files++;
3382 }
3383 }
0abd675e
CY		 3384#endif
3385
aff063e2 3386 sb->s_op = &f2fs_sops;
643fa961 3387#ifdef CONFIG_FS_ENCRYPTION
0b81d077 3388 sb->s_cop = &f2fs_cryptops;
95ae251f
EB		 3389#endif
3390#ifdef CONFIG_FS_VERITY
3391 sb->s_vop = &f2fs_verityops;
ffcc4182 3392#endif
aff063e2
JK		 3393 sb->s_xattr = f2fs_xattr_handlers;
3394 sb->s_export_op = &f2fs_export_ops;
3395 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3396 sb->s_time_gran = 1;
1751e8a6
LT		 3397 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3398 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3399 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3400 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3401
3402 /* init f2fs-specific super block info */
e8240f65 3403 sbi->valid_super_block = valid_super_block;
fb24fea7 3404 init_rwsem(&sbi->gc_lock);
853137ce 3405 mutex_init(&sbi->writepages);
aff063e2 3406 mutex_init(&sbi->cp_mutex);
04f0b2ea 3407 mutex_init(&sbi->resize_mutex);
b3582c68 3408 init_rwsem(&sbi->node_write);
59c9081b 3409 init_rwsem(&sbi->node_change);
315df839
JK		 3410
3411 /* disallow all the data/node/meta page writes */
3412 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3413 spin_lock_init(&sbi->stat_lock);
971767ca 3414
b0af6d49
CY		 3415 /* init iostat info */
3416 spin_lock_init(&sbi->iostat_lock);
3417 sbi->iostat_enable = false;
3418
458e6197 3419 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3420 int n = (i == META) ? 1: NR_TEMP_TYPE;
3421 int j;
3422
c8606593
KC		 3423 sbi->write_io[i] =
3424 f2fs_kmalloc(sbi,
3425 array_size(n,
3426 sizeof(struct f2fs_bio_info)),
3427 GFP_KERNEL);
b63def91
CJ		 3428 if (!sbi->write_io[i]) {
3429 err = -ENOMEM;
0b2103e8 3430 goto free_bio_info;
b63def91 3431 }
a912b54d
JK		 3432
3433 for (j = HOT; j < n; j++) {
3434 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3435 sbi->write_io[i][j].sbi = sbi;
3436 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3437 spin_lock_init(&sbi->write_io[i][j].io_lock);
3438 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
0b20fcec
CY		 3439 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
3440 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
a912b54d 3441 }
458e6197 3442 }
971767ca 3443
b873b798 3444 init_rwsem(&sbi->cp_rwsem);
db6ec53b 3445 init_rwsem(&sbi->quota_sem);
fb51b5ef 3446 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3447 init_sb_info(sbi);
3448
523be8a6
JK		 3449 err = init_percpu_info(sbi);
3450 if (err)
d7997e63 3451 goto free_bio_info;
523be8a6 3452
c72db71e 3453 if (F2FS_IO_ALIGNED(sbi)) {
0a595eba 3454 sbi->write_io_dummy =
a3ebfe4f 3455 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3456 if (!sbi->write_io_dummy) {
3457 err = -ENOMEM;
d7997e63 3458 goto free_percpu;
1727f317 3459 }
0a595eba
JK		 3460 }
3461
aff063e2
JK		 3462 /* get an inode for meta space */
3463 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3464 if (IS_ERR(sbi->meta_inode)) {
dcbb4c10 3465 f2fs_err(sbi, "Failed to read F2FS meta data inode");
aff063e2 3466 err = PTR_ERR(sbi->meta_inode);
0a595eba 3467 goto free_io_dummy;
aff063e2
JK		 3468 }
3469
4d57b86d 3470 err = f2fs_get_valid_checkpoint(sbi);
a07ef784 3471 if (err) {
dcbb4c10 3472 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
aff063e2 3473 goto free_meta_inode;
a07ef784 3474 }
aff063e2 3475
af033b2a
CY		 3476 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3477 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3478 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3479 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3480 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3481 }
af033b2a 3482
04f0b2ea
QS		 3483 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3484 set_sbi_flag(sbi, SBI_NEED_FSCK);
3485
3c62be17
JK		 3486 /* Initialize device list */
3487 err = f2fs_scan_devices(sbi);
3488 if (err) {
dcbb4c10 3489 f2fs_err(sbi, "Failed to find devices");
3c62be17
JK		 3490 goto free_devices;
3491 }
3492
4c8ff709
CY		 3493 err = f2fs_init_post_read_wq(sbi);
3494 if (err) {
3495 f2fs_err(sbi, "Failed to initialize post read workqueue");
3496 goto free_devices;
3497 }
3498
aff063e2
JK		 3499 sbi->total_valid_node_count =
3500 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3501 percpu_counter_set(&sbi->total_valid_inode_count,
3502 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3503 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3504 sbi->total_valid_block_count =
3505 le64_to_cpu(sbi->ckpt->valid_block_count);
3506 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3507 sbi->reserved_blocks = 0;
80d42145 3508 sbi->current_reserved_blocks = 0;
7e65be49 3509 limit_reserve_root(sbi);
41382ec4 3510
c227f912
CY		 3511 for (i = 0; i < NR_INODE_TYPE; i++) {
3512 INIT_LIST_HEAD(&sbi->inode_list[i]);
3513 spin_lock_init(&sbi->inode_lock[i]);
3514 }
040d2bb3 3515 mutex_init(&sbi->flush_lock);
aff063e2 3516
4d57b86d 3517 f2fs_init_extent_cache_info(sbi);
1dcc336b 3518
4d57b86d 3519 f2fs_init_ino_entry_info(sbi);
aff063e2 3520
50fa53ec
CY		 3521 f2fs_init_fsync_node_info(sbi);
3522
aff063e2 3523 /* setup f2fs internal modules */
4d57b86d 3524 err = f2fs_build_segment_manager(sbi);
a07ef784 3525 if (err) {
dcbb4c10
JP		 3526 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3527 err);
aff063e2 3528 goto free_sm;
a07ef784 3529 }
4d57b86d 3530 err = f2fs_build_node_manager(sbi);
a07ef784 3531 if (err) {
dcbb4c10
JP		 3532 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3533 err);
aff063e2 3534 goto free_nm;
a07ef784 3535 }
aff063e2 3536
8f1dbbbb
SL		 3537 /* For write statistics */
3538 if (sb->s_bdev->bd_part)
3539 sbi->sectors_written_start =
dbae2c55
MC		 3540 (u64)part_stat_read(sb->s_bdev->bd_part,
3541 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3542
3543 /* Read accumulated write IO statistics if exists */
3544 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3545 if (__exist_node_summaries(sbi))
3546 sbi->kbytes_written =
b2dde6fc 3547 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3548
4d57b86d 3549 f2fs_build_gc_manager(sbi);
aff063e2 3550
60aa4d55
ST		 3551 err = f2fs_build_stats(sbi);
3552 if (err)
3553 goto free_nm;
3554
aff063e2
JK		 3555 /* get an inode for node space */
3556 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3557 if (IS_ERR(sbi->node_inode)) {
dcbb4c10 3558 f2fs_err(sbi, "Failed to read node inode");
aff063e2 3559 err = PTR_ERR(sbi->node_inode);
60aa4d55 3560 goto free_stats;
aff063e2
JK		 3561 }
3562
aff063e2
JK		 3563 /* read root inode and dentry */
3564 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3565 if (IS_ERR(root)) {
dcbb4c10 3566 f2fs_err(sbi, "Failed to read root inode");
aff063e2 3567 err = PTR_ERR(root);
60aa4d55 3568 goto free_node_inode;
aff063e2 3569 }
bcbfbd60
CY		 3570 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3571 !root->i_size || !root->i_nlink) {
9d847950 3572 iput(root);
8f99a946 3573 err = -EINVAL;
60aa4d55 3574 goto free_node_inode;
8f99a946 3575 }
aff063e2
JK		 3576
3577 sb->s_root = d_make_root(root); /* allocate root dentry */
3578 if (!sb->s_root) {
3579 err = -ENOMEM;
025cdb16 3580 goto free_node_inode;
aff063e2
JK		 3581 }
3582
dc6b2055 3583 err = f2fs_register_sysfs(sbi);
b59d0bae 3584 if (err)
a398101a 3585 goto free_root_inode;
b59d0bae 3586
ea676733 3587#ifdef CONFIG_QUOTA
76cf05d7 3588 /* Enable quota usage during mount */
7beb01f7 3589 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3590 err = f2fs_enable_quotas(sb);
730746ce 3591 if (err)
dcbb4c10 3592 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
ea676733
JK		 3593 }
3594#endif
7a88ddb5 3595 /* if there are any orphan inodes, free them */
4d57b86d 3596 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3597 if (err)
ea676733 3598 goto free_meta;
4b2414d0 3599
4354994f 3600 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3601 goto reset_checkpoint;
4354994f 3602
6437d1b0 3603 /* recover fsynced data */
a9117eca
CY		 3604 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
3605 !test_opt(sbi, NORECOVERY)) {
081d78c2
JK		 3606 /*
3607 * mount should be failed, when device has readonly mode, and
3608 * previous checkpoint was not done by clean system shutdown.
3609 */
b61af314
CY		 3610 if (f2fs_hw_is_readonly(sbi)) {
3611 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3612 err = -EROFS;
dcbb4c10 3613 f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
b61af314
CY		 3614 goto free_meta;
3615 }
dcbb4c10 3616 f2fs_info(sbi, "write access unavailable, skipping recovery");
b61af314 3617 goto reset_checkpoint;
081d78c2 3618 }
2adc3505
CY		 3619
3620 if (need_fsck)
3621 set_sbi_flag(sbi, SBI_NEED_FSCK);
3622
aa2c8c43
CY		 3623 if (skip_recovery)
3624 goto reset_checkpoint;
a468f0ef 3625
4d57b86d 3626 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3627 if (err < 0) {
aa2c8c43
CY		 3628 if (err != -ENOMEM)
3629 skip_recovery = true;
2adc3505 3630 need_fsck = true;
dcbb4c10
JP		 3631 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3632 err);
4b2414d0 3633 goto free_meta;
ed2e621a 3634 }
6781eabb 3635 } else {
4d57b86d 3636 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3637
3638 if (!f2fs_readonly(sb) && err > 0) {
3639 err = -EINVAL;
dcbb4c10 3640 f2fs_err(sbi, "Need to recover fsync data");
ea676733 3641 goto free_meta;
6781eabb 3642 }
6437d1b0 3643 }
d508c94e
SK		 3644
3645 /*
3646 * If the f2fs is not readonly and fsync data recovery succeeds,
3647 * check zoned block devices' write pointer consistency.
3648 */
3649 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
3650 err = f2fs_check_write_pointer(sbi);
3651 if (err)
3652 goto free_meta;
3653 }
3654
aa2c8c43 3655reset_checkpoint:
4d57b86d 3656 /* f2fs_recover_fsync_data() cleared this already */
315df839 3657 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3658
4354994f
DR		 3659 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3660 err = f2fs_disable_checkpoint(sbi);
3661 if (err)
812a9597 3662 goto sync_free_meta;
4354994f
DR		 3663 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3664 f2fs_enable_checkpoint(sbi);
3665 }
3666
6437d1b0
JK		 3667 /*
3668 * If filesystem is not mounted as read-only then
3669 * do start the gc_thread.
3670 */
6c029932 3671 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
6437d1b0 3672 /* After POR, we can run background GC thread.*/
4d57b86d 3673 err = f2fs_start_gc_thread(sbi);
6437d1b0 3674 if (err)
812a9597 3675 goto sync_free_meta;
6437d1b0 3676 }
5222595d 3677 kvfree(options);
da554e48 3678
3679 /* recover broken superblock */
f2353d7b 3680 if (recovery) {
41214b3c 3681 err = f2fs_commit_super(sbi, true);
dcbb4c10
JP		 3682 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
3683 sbi->valid_super_block ? 1 : 2, err);
da554e48 3684 }
3685
bae01eda
CY		 3686 f2fs_join_shrinker(sbi);
3687
84b89e5d
JK		 3688 f2fs_tuning_parameters(sbi);
3689
dcbb4c10
JP		 3690 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
3691 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3692 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3693 f2fs_update_time(sbi, REQ_TIME);
db610a64 3694 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3695 return 0;
6437d1b0 3696
812a9597
JK		 3697sync_free_meta:
3698 /* safe to flush all the data */
3699 sync_filesystem(sbi->sb);
aa2c8c43 3700 retry_cnt = 0;
812a9597 3701
4b2414d0 3702free_meta:
ea676733 3703#ifdef CONFIG_QUOTA
26b5a079 3704 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3705 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3706 f2fs_quota_off_umount(sbi->sb);
3707#endif
4b2414d0 3708 /*
4d57b86d 3709 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3710 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3711 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3712 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3713 */
3714 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3715 /* evict some inodes being cached by GC */
3716 evict_inodes(sb);
dc6b2055 3717 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3718free_root_inode:
3719 dput(sb->s_root);
3720 sb->s_root = NULL;
3721free_node_inode:
4d57b86d 3722 f2fs_release_ino_entry(sbi, true);
bae01eda 3723 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3724 iput(sbi->node_inode);
7c77bf7d 3725 sbi->node_inode = NULL;
60aa4d55
ST		 3726free_stats:
3727 f2fs_destroy_stats(sbi);
aff063e2 3728free_nm:
4d57b86d 3729 f2fs_destroy_node_manager(sbi);
aff063e2 3730free_sm:
4d57b86d 3731 f2fs_destroy_segment_manager(sbi);
4c8ff709 3732 f2fs_destroy_post_read_wq(sbi);
3c62be17
JK		 3733free_devices:
3734 destroy_device_list(sbi);
5222595d 3735 kvfree(sbi->ckpt);
aff063e2
JK		 3736free_meta_inode:
3737 make_bad_inode(sbi->meta_inode);
3738 iput(sbi->meta_inode);
7c77bf7d 3739 sbi->meta_inode = NULL;
0a595eba
JK		 3740free_io_dummy:
3741 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3742free_percpu:
3743 destroy_percpu_info(sbi);
3744free_bio_info:
a912b54d 3745 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3746 kvfree(sbi->write_io[i]);
5aba5430
DR		 3747
3748#ifdef CONFIG_UNICODE
3749 utf8_unload(sbi->s_encoding);
3750#endif
d7997e63 3751free_options:
4b2414d0
CY		 3752#ifdef CONFIG_QUOTA
3753 for (i = 0; i < MAXQUOTAS; i++)
5222595d 3754 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3755#endif
5222595d 3756 kvfree(options);
aff063e2 3757free_sb_buf:
5222595d 3758 kvfree(raw_super);
aff063e2 3759free_sbi:
43b6573b
KM		 3760 if (sbi->s_chksum_driver)
3761 crypto_free_shash(sbi->s_chksum_driver);
5222595d 3762 kvfree(sbi);
ed2e621a
JK		 3763
3764 /* give only one another chance */
aa2c8c43
CY		 3765 if (retry_cnt > 0 && skip_recovery) {
3766 retry_cnt--;
ed2e621a
JK		 3767 shrink_dcache_sb(sb);
3768 goto try_onemore;
3769 }
aff063e2
JK		 3770 return err;
3771}
3772
3773static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3774 const char *dev_name, void *data)
3775{
3776 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3777}
3778
30a5537f
JK		 3779static void kill_f2fs_super(struct super_block *sb)
3780{
cce13252 3781 if (sb->s_root) {
1cb50f87
JK		 3782 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3783
3784 set_sbi_flag(sbi, SBI_IS_CLOSE);
3785 f2fs_stop_gc_thread(sbi);
3786 f2fs_stop_discard_thread(sbi);
3787
3788 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3789 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3790 struct cp_control cpc = {
3791 .reason = CP_UMOUNT,
3792 };
3793 f2fs_write_checkpoint(sbi, &cpc);
3794 }
1378752b
CY		 3795
3796 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3797 sb->s_flags &= ~SB_RDONLY;
cce13252 3798 }
30a5537f
JK		 3799 kill_block_super(sb);
3800}
3801
aff063e2
JK		 3802static struct file_system_type f2fs_fs_type = {
3803 .owner = THIS_MODULE,
3804 .name = "f2fs",
3805 .mount = f2fs_mount,
30a5537f 3806 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3807 .fs_flags = FS_REQUIRES_DEV,
3808};
7f78e035 3809MODULE_ALIAS_FS("f2fs");
aff063e2 3810
6e6093a8 3811static int __init init_inodecache(void)
aff063e2 3812{
5d097056
VD		 3813 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3814 sizeof(struct f2fs_inode_info), 0,
3815 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3816 if (!f2fs_inode_cachep)
aff063e2
JK		 3817 return -ENOMEM;
3818 return 0;
3819}
3820
3821static void destroy_inodecache(void)
3822{
3823 /*
3824 * Make sure all delayed rcu free inodes are flushed before we
3825 * destroy cache.
3826 */
3827 rcu_barrier();
3828 kmem_cache_destroy(f2fs_inode_cachep);
3829}
3830
3831static int __init init_f2fs_fs(void)
3832{
3833 int err;
3834
4071e67c
AP		 3835 if (PAGE_SIZE != F2FS_BLKSIZE) {
3836 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3837 PAGE_SIZE, F2FS_BLKSIZE);
3838 return -EINVAL;
3839 }
3840
c0508650
JK		 3841 f2fs_build_trace_ios();
3842
aff063e2
JK		 3843 err = init_inodecache();
3844 if (err)
3845 goto fail;
4d57b86d 3846 err = f2fs_create_node_manager_caches();
aff063e2 3847 if (err)
9890ff3f 3848 goto free_inodecache;
4d57b86d 3849 err = f2fs_create_segment_manager_caches();
aff063e2 3850 if (err)
9890ff3f 3851 goto free_node_manager_caches;
4d57b86d 3852 err = f2fs_create_checkpoint_caches();
aff063e2 3853 if (err)
06292073 3854 goto free_segment_manager_caches;
4d57b86d 3855 err = f2fs_create_extent_cache();
1dcc336b
CY		 3856 if (err)
3857 goto free_checkpoint_caches;
dc6b2055 3858 err = f2fs_init_sysfs();
a398101a 3859 if (err)
1dcc336b 3860 goto free_extent_cache;
2658e50d 3861 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3862 if (err)
a398101a 3863 goto free_sysfs;
2658e50d
JK		 3864 err = register_filesystem(&f2fs_fs_type);
3865 if (err)
3866 goto free_shrinker;
21acc07d 3867 f2fs_create_root_stats();
6dbb1796
EB		 3868 err = f2fs_init_post_read_processing();
3869 if (err)
3870 goto free_root_stats;
0b20fcec
CY		 3871 err = f2fs_init_bio_entry_cache();
3872 if (err)
3873 goto free_post_read;
f543805f
CY		 3874 err = f2fs_init_bioset();
3875 if (err)
3876 goto free_bio_enrty_cache;
9890ff3f 3877 return 0;
f543805f
CY		 3878free_bio_enrty_cache:
3879 f2fs_destroy_bio_entry_cache();
0b20fcec
CY		 3880free_post_read:
3881 f2fs_destroy_post_read_processing();
6dbb1796
EB		 3882free_root_stats:
3883 f2fs_destroy_root_stats();
787c7b8c 3884 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3885free_shrinker:
3886 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3887free_sysfs:
dc6b2055 3888 f2fs_exit_sysfs();
1dcc336b 3889free_extent_cache:
4d57b86d 3890 f2fs_destroy_extent_cache();
9890ff3f 3891free_checkpoint_caches:
4d57b86d 3892 f2fs_destroy_checkpoint_caches();
7fd9e544 3893free_segment_manager_caches:
4d57b86d 3894 f2fs_destroy_segment_manager_caches();
9890ff3f 3895free_node_manager_caches:
4d57b86d 3896 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3897free_inodecache:
3898 destroy_inodecache();
aff063e2
JK		 3899fail:
3900 return err;
3901}
3902
3903static void __exit exit_f2fs_fs(void)
3904{
f543805f 3905 f2fs_destroy_bioset();
0b20fcec 3906 f2fs_destroy_bio_entry_cache();
6dbb1796 3907 f2fs_destroy_post_read_processing();
4589d25d 3908 f2fs_destroy_root_stats();
aff063e2 3909 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3910 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3911 f2fs_exit_sysfs();
4d57b86d
CY		 3912 f2fs_destroy_extent_cache();
3913 f2fs_destroy_checkpoint_caches();
3914 f2fs_destroy_segment_manager_caches();
3915 f2fs_destroy_node_manager_caches();
aff063e2 3916 destroy_inodecache();
351f4fba 3917 f2fs_destroy_trace_ios();
aff063e2
JK		 3918}
3919
3920module_init(init_f2fs_fs)
3921module_exit(exit_f2fs_fs)
3922
3923MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3924MODULE_DESCRIPTION("Flash Friendly File System");
3925MODULE_LICENSE("GPL");
b4b9d34c 3926
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