]> git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blame - fs/f2fs/super.c
projects / mirror_ubuntu-hirsute-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
f2fs: compress: remove unneeded code
[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>
c6a564ff 27#include <linux/part_stat.h>
aff063e2
JK		 28
29#include "f2fs.h"
30#include "node.h"
5ec4e49f 31#include "segment.h"
aff063e2 32#include "xattr.h"
b59d0bae 33#include "gc.h"
db9f7c1a 34#include "trace.h"
aff063e2 35
a2a4a7e4
NJ		 36#define CREATE_TRACE_POINTS
37#include <trace/events/f2fs.h>
38
aff063e2
JK		 39static struct kmem_cache *f2fs_inode_cachep;
40
73faec4d 41#ifdef CONFIG_F2FS_FAULT_INJECTION
2c63fead 42
19880e6e 43const char *f2fs_fault_name[FAULT_MAX] = {
2c63fead 44 [FAULT_KMALLOC] = "kmalloc",
628b3d14 45 [FAULT_KVMALLOC] = "kvmalloc",
c41f3cc3 46 [FAULT_PAGE_ALLOC] = "page alloc",
01eccef7 47 [FAULT_PAGE_GET] = "page get",
d62fe971 48 [FAULT_ALLOC_BIO] = "alloc bio",
cb78942b
JK		 49 [FAULT_ALLOC_NID] = "alloc nid",
50 [FAULT_ORPHAN] = "orphan",
51 [FAULT_BLOCK] = "no more block",
52 [FAULT_DIR_DEPTH] = "too big dir depth",
53aa6bbf 53 [FAULT_EVICT_INODE] = "evict_inode fail",
14b44d23 54 [FAULT_TRUNCATE] = "truncate fail",
6f5c2ed0 55 [FAULT_READ_IO] = "read IO error",
0f348028 56 [FAULT_CHECKPOINT] = "checkpoint error",
b83dcfe6 57 [FAULT_DISCARD] = "discard error",
6f5c2ed0 58 [FAULT_WRITE_IO] = "write IO error",
2c63fead 59};
08796897 60
d494500a
CY		 61void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
62 unsigned int type)
08796897 63{
63189b78 64 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1ecc0c5c 65
08796897 66 if (rate) {
1ecc0c5c
CY		 67 atomic_set(&ffi->inject_ops, 0);
68 ffi->inject_rate = rate;
08796897 69 }
d494500a
CY		 70
71 if (type)
72 ffi->inject_type = type;
73
74 if (!rate && !type)
75 memset(ffi, 0, sizeof(struct f2fs_fault_info));
08796897 76}
73faec4d
JK		 77#endif
78
2658e50d
JK		 79/* f2fs-wide shrinker description */
80static struct shrinker f2fs_shrinker_info = {
81 .scan_objects = f2fs_shrink_scan,
82 .count_objects = f2fs_shrink_count,
83 .seeks = DEFAULT_SEEKS,
84};
85
aff063e2 86enum {
696c018c 87 Opt_gc_background,
aff063e2 88 Opt_disable_roll_forward,
2d834bf9 89 Opt_norecovery,
aff063e2 90 Opt_discard,
64058be9 91 Opt_nodiscard,
aff063e2 92 Opt_noheap,
7a20b8a6 93 Opt_heap,
4058c511 94 Opt_user_xattr,
aff063e2 95 Opt_nouser_xattr,
4058c511 96 Opt_acl,
aff063e2
JK		 97 Opt_noacl,
98 Opt_active_logs,
99 Opt_disable_ext_identify,
444c580f 100 Opt_inline_xattr,
23cf7212 101 Opt_noinline_xattr,
6afc662e 102 Opt_inline_xattr_size,
8274de77 103 Opt_inline_data,
5efd3c6f 104 Opt_inline_dentry,
97c1794a 105 Opt_noinline_dentry,
6b4afdd7 106 Opt_flush_merge,
69e9e427 107 Opt_noflush_merge,
0f7b2abd 108 Opt_nobarrier,
d5053a34 109 Opt_fastboot,
89672159 110 Opt_extent_cache,
7daaea25 111 Opt_noextent_cache,
75342797 112 Opt_noinline_data,
343f40f0 113 Opt_data_flush,
7e65be49 114 Opt_reserve_root,
7c2e5963
JK		 115 Opt_resgid,
116 Opt_resuid,
36abef4e 117 Opt_mode,
ec91538d 118 Opt_io_size_bits,
73faec4d 119 Opt_fault_injection,
d494500a 120 Opt_fault_type,
6d94c74a
JK		 121 Opt_lazytime,
122 Opt_nolazytime,
4b2414d0
CY		 123 Opt_quota,
124 Opt_noquota,
0abd675e
CY		 125 Opt_usrquota,
126 Opt_grpquota,
5c57132e 127 Opt_prjquota,
4b2414d0
CY		 128 Opt_usrjquota,
129 Opt_grpjquota,
130 Opt_prjjquota,
131 Opt_offusrjquota,
132 Opt_offgrpjquota,
133 Opt_offprjjquota,
134 Opt_jqfmt_vfsold,
135 Opt_jqfmt_vfsv0,
136 Opt_jqfmt_vfsv1,
0cdd3195 137 Opt_whint,
07939627 138 Opt_alloc,
93cf93f1 139 Opt_fsync,
ff62af20 140 Opt_test_dummy_encryption,
27aacd28 141 Opt_inlinecrypt,
4d3aed70
DR		 142 Opt_checkpoint_disable,
143 Opt_checkpoint_disable_cap,
144 Opt_checkpoint_disable_cap_perc,
145 Opt_checkpoint_enable,
4c8ff709
CY		 146 Opt_compress_algorithm,
147 Opt_compress_log_size,
148 Opt_compress_extension,
aff063e2
JK		 149 Opt_err,
150};
151
152static match_table_t f2fs_tokens = {
696c018c 153 {Opt_gc_background, "background_gc=%s"},
aff063e2 154 {Opt_disable_roll_forward, "disable_roll_forward"},
2d834bf9 155 {Opt_norecovery, "norecovery"},
aff063e2 156 {Opt_discard, "discard"},
64058be9 157 {Opt_nodiscard, "nodiscard"},
aff063e2 158 {Opt_noheap, "no_heap"},
7a20b8a6 159 {Opt_heap, "heap"},
4058c511 160 {Opt_user_xattr, "user_xattr"},
aff063e2 161 {Opt_nouser_xattr, "nouser_xattr"},
4058c511 162 {Opt_acl, "acl"},
aff063e2
JK		 163 {Opt_noacl, "noacl"},
164 {Opt_active_logs, "active_logs=%u"},
165 {Opt_disable_ext_identify, "disable_ext_identify"},
444c580f 166 {Opt_inline_xattr, "inline_xattr"},
23cf7212 167 {Opt_noinline_xattr, "noinline_xattr"},
6afc662e 168 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
8274de77 169 {Opt_inline_data, "inline_data"},
5efd3c6f 170 {Opt_inline_dentry, "inline_dentry"},
97c1794a 171 {Opt_noinline_dentry, "noinline_dentry"},
6b4afdd7 172 {Opt_flush_merge, "flush_merge"},
69e9e427 173 {Opt_noflush_merge, "noflush_merge"},
0f7b2abd 174 {Opt_nobarrier, "nobarrier"},
d5053a34 175 {Opt_fastboot, "fastboot"},
89672159 176 {Opt_extent_cache, "extent_cache"},
7daaea25 177 {Opt_noextent_cache, "noextent_cache"},
75342797 178 {Opt_noinline_data, "noinline_data"},
343f40f0 179 {Opt_data_flush, "data_flush"},
7e65be49 180 {Opt_reserve_root, "reserve_root=%u"},
7c2e5963
JK		 181 {Opt_resgid, "resgid=%u"},
182 {Opt_resuid, "resuid=%u"},
36abef4e 183 {Opt_mode, "mode=%s"},
ec91538d 184 {Opt_io_size_bits, "io_bits=%u"},
73faec4d 185 {Opt_fault_injection, "fault_injection=%u"},
d494500a 186 {Opt_fault_type, "fault_type=%u"},
6d94c74a
JK		 187 {Opt_lazytime, "lazytime"},
188 {Opt_nolazytime, "nolazytime"},
4b2414d0
CY		 189 {Opt_quota, "quota"},
190 {Opt_noquota, "noquota"},
0abd675e
CY		 191 {Opt_usrquota, "usrquota"},
192 {Opt_grpquota, "grpquota"},
5c57132e 193 {Opt_prjquota, "prjquota"},
4b2414d0
CY		 194 {Opt_usrjquota, "usrjquota=%s"},
195 {Opt_grpjquota, "grpjquota=%s"},
196 {Opt_prjjquota, "prjjquota=%s"},
197 {Opt_offusrjquota, "usrjquota="},
198 {Opt_offgrpjquota, "grpjquota="},
199 {Opt_offprjjquota, "prjjquota="},
200 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
201 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
202 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
0cdd3195 203 {Opt_whint, "whint_mode=%s"},
07939627 204 {Opt_alloc, "alloc_mode=%s"},
93cf93f1 205 {Opt_fsync, "fsync_mode=%s"},
ed318a6c 206 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
ff62af20 207 {Opt_test_dummy_encryption, "test_dummy_encryption"},
27aacd28 208 {Opt_inlinecrypt, "inlinecrypt"},
4d3aed70
DR		 209 {Opt_checkpoint_disable, "checkpoint=disable"},
210 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
211 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
212 {Opt_checkpoint_enable, "checkpoint=enable"},
4c8ff709
CY		 213 {Opt_compress_algorithm, "compress_algorithm=%s"},
214 {Opt_compress_log_size, "compress_log_size=%u"},
215 {Opt_compress_extension, "compress_extension=%s"},
aff063e2
JK		 216 {Opt_err, NULL},
217};
218
dcbb4c10 219void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
a07ef784
NJ		 220{
221 struct va_format vaf;
222 va_list args;
dcbb4c10 223 int level;
a07ef784
NJ		 224
225 va_start(args, fmt);
dcbb4c10
JP		 226
227 level = printk_get_level(fmt);
228 vaf.fmt = printk_skip_level(fmt);
a07ef784 229 vaf.va = &args;
dcbb4c10
JP		 230 printk("%c%cF2FS-fs (%s): %pV\n",
231 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
232
a07ef784
NJ		 233 va_end(args);
234}
235
5aba5430
DR		 236#ifdef CONFIG_UNICODE
237static const struct f2fs_sb_encodings {
238 __u16 magic;
239 char *name;
240 char *version;
241} f2fs_sb_encoding_map[] = {
242 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
243};
244
245static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
246 const struct f2fs_sb_encodings **encoding,
247 __u16 *flags)
248{
249 __u16 magic = le16_to_cpu(sb->s_encoding);
250 int i;
251
252 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
253 if (magic == f2fs_sb_encoding_map[i].magic)
254 break;
255
256 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
257 return -EINVAL;
258
259 *encoding = &f2fs_sb_encoding_map[i];
260 *flags = le16_to_cpu(sb->s_encoding_flags);
261
262 return 0;
263}
264#endif
265
7e65be49
JK		 266static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
267{
9a9aecaa
DR		 268 block_t limit = min((sbi->user_block_count << 1) / 1000,
269 sbi->user_block_count - sbi->reserved_blocks);
7e65be49
JK		 270
271 /* limit is 0.2% */
63189b78
CY		 272 if (test_opt(sbi, RESERVE_ROOT) &&
273 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
274 F2FS_OPTION(sbi).root_reserved_blocks = limit;
dcbb4c10
JP		 275 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
276 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 277 }
7c2e5963 278 if (!test_opt(sbi, RESERVE_ROOT) &&
63189b78 279 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
7c2e5963 280 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
63189b78 281 !gid_eq(F2FS_OPTION(sbi).s_resgid,
7c2e5963 282 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
dcbb4c10
JP		 283 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
284 from_kuid_munged(&init_user_ns,
285 F2FS_OPTION(sbi).s_resuid),
286 from_kgid_munged(&init_user_ns,
287 F2FS_OPTION(sbi).s_resgid));
7e65be49
JK		 288}
289
1ae18f71
JK		 290static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
291{
292 if (!F2FS_OPTION(sbi).unusable_cap_perc)
293 return;
294
295 if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
296 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
297 else
298 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
299 F2FS_OPTION(sbi).unusable_cap_perc;
300
301 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
302 F2FS_OPTION(sbi).unusable_cap,
303 F2FS_OPTION(sbi).unusable_cap_perc);
304}
305
aff063e2
JK		 306static void init_once(void *foo)
307{
308 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
309
aff063e2
JK		 310 inode_init_once(&fi->vfs_inode);
311}
312
4b2414d0
CY		 313#ifdef CONFIG_QUOTA
314static const char * const quotatypes[] = INITQFNAMES;
315#define QTYPE2NAME(t) (quotatypes[t])
316static int f2fs_set_qf_name(struct super_block *sb, int qtype,
317 substring_t *args)
318{
319 struct f2fs_sb_info *sbi = F2FS_SB(sb);
320 char *qname;
321 int ret = -EINVAL;
322
63189b78 323 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 324 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 325 return -EINVAL;
326 }
7beb01f7 327 if (f2fs_sb_has_quota_ino(sbi)) {
dcbb4c10 328 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
ea676733
JK		 329 return 0;
330 }
331
4b2414d0
CY		 332 qname = match_strdup(args);
333 if (!qname) {
dcbb4c10 334 f2fs_err(sbi, "Not enough memory for storing quotafile name");
f365c6cc 335 return -ENOMEM;
4b2414d0 336 }
63189b78
CY		 337 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
338 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
4b2414d0
CY		 339 ret = 0;
340 else
dcbb4c10 341 f2fs_err(sbi, "%s quota file already specified",
4b2414d0
CY		 342 QTYPE2NAME(qtype));
343 goto errout;
344 }
345 if (strchr(qname, '/')) {
dcbb4c10 346 f2fs_err(sbi, "quotafile must be on filesystem root");
4b2414d0
CY		 347 goto errout;
348 }
63189b78 349 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
4b2414d0
CY		 350 set_opt(sbi, QUOTA);
351 return 0;
352errout:
ba87a45c 353 kfree(qname);
4b2414d0
CY		 354 return ret;
355}
356
357static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
358{
359 struct f2fs_sb_info *sbi = F2FS_SB(sb);
360
63189b78 361 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 362 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 363 return -EINVAL;
364 }
ba87a45c 365 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
63189b78 366 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
4b2414d0
CY		 367 return 0;
368}
369
370static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
371{
372 /*
373 * We do the test below only for project quotas. 'usrquota' and
374 * 'grpquota' mount options are allowed even without quota feature
375 * to support legacy quotas in quota files.
376 */
7beb01f7 377 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
dcbb4c10 378 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
4b2414d0
CY		 379 return -1;
380 }
63189b78
CY		 381 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
382 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
383 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
384 if (test_opt(sbi, USRQUOTA) &&
385 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
4b2414d0
CY		 386 clear_opt(sbi, USRQUOTA);
387
63189b78
CY		 388 if (test_opt(sbi, GRPQUOTA) &&
389 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
4b2414d0
CY		 390 clear_opt(sbi, GRPQUOTA);
391
63189b78
CY		 392 if (test_opt(sbi, PRJQUOTA) &&
393 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4b2414d0
CY		 394 clear_opt(sbi, PRJQUOTA);
395
396 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
397 test_opt(sbi, PRJQUOTA)) {
dcbb4c10 398 f2fs_err(sbi, "old and new quota format mixing");
4b2414d0
CY		 399 return -1;
400 }
401
63189b78 402 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 403 f2fs_err(sbi, "journaled quota format not specified");
4b2414d0
CY		 404 return -1;
405 }
406 }
ea676733 407
7beb01f7 408 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 409 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
63189b78 410 F2FS_OPTION(sbi).s_jquota_fmt = 0;
ea676733 411 }
4b2414d0
CY		 412 return 0;
413}
414#endif
415
ed318a6c
EB		 416static int f2fs_set_test_dummy_encryption(struct super_block *sb,
417 const char *opt,
418 const substring_t *arg,
419 bool is_remount)
420{
421 struct f2fs_sb_info *sbi = F2FS_SB(sb);
422#ifdef CONFIG_FS_ENCRYPTION
423 int err;
424
425 if (!f2fs_sb_has_encrypt(sbi)) {
426 f2fs_err(sbi, "Encrypt feature is off");
427 return -EINVAL;
428 }
429
430 /*
431 * This mount option is just for testing, and it's not worthwhile to
432 * implement the extra complexity (e.g. RCU protection) that would be
433 * needed to allow it to be set or changed during remount. We do allow
434 * it to be specified during remount, but only if there is no change.
435 */
436 if (is_remount && !F2FS_OPTION(sbi).dummy_enc_ctx.ctx) {
437 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount");
438 return -EINVAL;
439 }
440 err = fscrypt_set_test_dummy_encryption(
441 sb, arg, &F2FS_OPTION(sbi).dummy_enc_ctx);
442 if (err) {
443 if (err == -EEXIST)
444 f2fs_warn(sbi,
445 "Can't change test_dummy_encryption on remount");
446 else if (err == -EINVAL)
447 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized",
448 opt);
449 else
450 f2fs_warn(sbi, "Error processing option \"%s\" [%d]",
451 opt, err);
452 return -EINVAL;
453 }
454 f2fs_warn(sbi, "Test dummy encryption mode enabled");
455#else
456 f2fs_warn(sbi, "Test dummy encryption mount option ignored");
457#endif
458 return 0;
459}
460
461static int parse_options(struct super_block *sb, char *options, bool is_remount)
696c018c
NJ		 462{
463 struct f2fs_sb_info *sbi = F2FS_SB(sb);
464 substring_t args[MAX_OPT_ARGS];
1f0b067b 465#ifdef CONFIG_F2FS_FS_COMPRESSION
4c8ff709 466 unsigned char (*ext)[F2FS_EXTENSION_LEN];
1f0b067b
CY		 467 int ext_cnt;
468#endif
696c018c 469 char *p, *name;
1f0b067b 470 int arg = 0;
7c2e5963
JK		 471 kuid_t uid;
472 kgid_t gid;
4b2414d0 473 int ret;
696c018c
NJ		 474
475 if (!options)
476 return 0;
477
478 while ((p = strsep(&options, ",")) != NULL) {
479 int token;
480 if (!*p)
481 continue;
482 /*
483 * Initialize args struct so we know whether arg was
484 * found; some options take optional arguments.
485 */
486 args[0].to = args[0].from = NULL;
487 token = match_token(p, f2fs_tokens, args);
488
489 switch (token) {
490 case Opt_gc_background:
491 name = match_strdup(&args[0]);
492
493 if (!name)
494 return -ENOMEM;
3c57f751 495 if (!strcmp(name, "on")) {
bbbc34fd 496 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
3c57f751 497 } else if (!strcmp(name, "off")) {
bbbc34fd 498 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
3c57f751 499 } else if (!strcmp(name, "sync")) {
bbbc34fd 500 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
6aefd93b 501 } else {
ba87a45c 502 kfree(name);
696c018c
NJ		 503 return -EINVAL;
504 }
ba87a45c 505 kfree(name);
696c018c
NJ		 506 break;
507 case Opt_disable_roll_forward:
508 set_opt(sbi, DISABLE_ROLL_FORWARD);
509 break;
2d834bf9
JK		 510 case Opt_norecovery:
511 /* this option mounts f2fs with ro */
a9117eca 512 set_opt(sbi, NORECOVERY);
2d834bf9
JK		 513 if (!f2fs_readonly(sb))
514 return -EINVAL;
515 break;
696c018c 516 case Opt_discard:
7d20c8ab 517 set_opt(sbi, DISCARD);
696c018c 518 break;
64058be9 519 case Opt_nodiscard:
7beb01f7 520 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 521 f2fs_warn(sbi, "discard is required for zoned block devices");
96ba2dec
DLM		 522 return -EINVAL;
523 }
64058be9 524 clear_opt(sbi, DISCARD);
487df616 525 break;
696c018c
NJ		 526 case Opt_noheap:
527 set_opt(sbi, NOHEAP);
528 break;
7a20b8a6
JK		 529 case Opt_heap:
530 clear_opt(sbi, NOHEAP);
531 break;
696c018c 532#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 533 case Opt_user_xattr:
534 set_opt(sbi, XATTR_USER);
535 break;
696c018c
NJ		 536 case Opt_nouser_xattr:
537 clear_opt(sbi, XATTR_USER);
538 break;
444c580f
JK		 539 case Opt_inline_xattr:
540 set_opt(sbi, INLINE_XATTR);
541 break;
23cf7212
CY		 542 case Opt_noinline_xattr:
543 clear_opt(sbi, INLINE_XATTR);
544 break;
6afc662e
CY		 545 case Opt_inline_xattr_size:
546 if (args->from && match_int(args, &arg))
547 return -EINVAL;
548 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 549 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 550 break;
696c018c 551#else
4058c511 552 case Opt_user_xattr:
dcbb4c10 553 f2fs_info(sbi, "user_xattr options not supported");
4058c511 554 break;
696c018c 555 case Opt_nouser_xattr:
dcbb4c10 556 f2fs_info(sbi, "nouser_xattr options not supported");
696c018c 557 break;
444c580f 558 case Opt_inline_xattr:
dcbb4c10 559 f2fs_info(sbi, "inline_xattr options not supported");
444c580f 560 break;
23cf7212 561 case Opt_noinline_xattr:
dcbb4c10 562 f2fs_info(sbi, "noinline_xattr options not supported");
23cf7212 563 break;
696c018c
NJ		 564#endif
565#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 566 case Opt_acl:
567 set_opt(sbi, POSIX_ACL);
568 break;
696c018c
NJ		 569 case Opt_noacl:
570 clear_opt(sbi, POSIX_ACL);
571 break;
572#else
4058c511 573 case Opt_acl:
dcbb4c10 574 f2fs_info(sbi, "acl options not supported");
4058c511 575 break;
696c018c 576 case Opt_noacl:
dcbb4c10 577 f2fs_info(sbi, "noacl options not supported");
696c018c
NJ		 578 break;
579#endif
580 case Opt_active_logs:
581 if (args->from && match_int(args, &arg))
582 return -EINVAL;
583 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
584 return -EINVAL;
63189b78 585 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 586 break;
587 case Opt_disable_ext_identify:
588 set_opt(sbi, DISABLE_EXT_IDENTIFY);
589 break;
8274de77
HL		 590 case Opt_inline_data:
591 set_opt(sbi, INLINE_DATA);
592 break;
5efd3c6f
CY		 593 case Opt_inline_dentry:
594 set_opt(sbi, INLINE_DENTRY);
595 break;
97c1794a
CY		 596 case Opt_noinline_dentry:
597 clear_opt(sbi, INLINE_DENTRY);
598 break;
6b4afdd7
JK		 599 case Opt_flush_merge:
600 set_opt(sbi, FLUSH_MERGE);
601 break;
69e9e427
JK		 602 case Opt_noflush_merge:
603 clear_opt(sbi, FLUSH_MERGE);
604 break;
0f7b2abd
JK		 605 case Opt_nobarrier:
606 set_opt(sbi, NOBARRIER);
607 break;
d5053a34
JK		 608 case Opt_fastboot:
609 set_opt(sbi, FASTBOOT);
610 break;
89672159
CY		 611 case Opt_extent_cache:
612 set_opt(sbi, EXTENT_CACHE);
613 break;
7daaea25
JK		 614 case Opt_noextent_cache:
615 clear_opt(sbi, EXTENT_CACHE);
616 break;
75342797
WL		 617 case Opt_noinline_data:
618 clear_opt(sbi, INLINE_DATA);
619 break;
343f40f0
CY		 620 case Opt_data_flush:
621 set_opt(sbi, DATA_FLUSH);
622 break;
7e65be49
JK		 623 case Opt_reserve_root:
624 if (args->from && match_int(args, &arg))
625 return -EINVAL;
626 if (test_opt(sbi, RESERVE_ROOT)) {
dcbb4c10
JP		 627 f2fs_info(sbi, "Preserve previous reserve_root=%u",
628 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 629 } else {
63189b78 630 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 631 set_opt(sbi, RESERVE_ROOT);
632 }
633 break;
7c2e5963
JK		 634 case Opt_resuid:
635 if (args->from && match_int(args, &arg))
636 return -EINVAL;
637 uid = make_kuid(current_user_ns(), arg);
638 if (!uid_valid(uid)) {
dcbb4c10 639 f2fs_err(sbi, "Invalid uid value %d", arg);
7c2e5963
JK		 640 return -EINVAL;
641 }
63189b78 642 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 643 break;
644 case Opt_resgid:
645 if (args->from && match_int(args, &arg))
646 return -EINVAL;
647 gid = make_kgid(current_user_ns(), arg);
648 if (!gid_valid(gid)) {
dcbb4c10 649 f2fs_err(sbi, "Invalid gid value %d", arg);
7c2e5963
JK		 650 return -EINVAL;
651 }
63189b78 652 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 653 break;
36abef4e
JK		 654 case Opt_mode:
655 name = match_strdup(&args[0]);
656
657 if (!name)
658 return -ENOMEM;
3c57f751 659 if (!strcmp(name, "adaptive")) {
7beb01f7 660 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 661 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
ba87a45c 662 kfree(name);
3adc57e9
DLM		 663 return -EINVAL;
664 }
b0332a0f 665 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
3c57f751 666 } else if (!strcmp(name, "lfs")) {
b0332a0f 667 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
36abef4e 668 } else {
ba87a45c 669 kfree(name);
36abef4e
JK		 670 return -EINVAL;
671 }
ba87a45c 672 kfree(name);
36abef4e 673 break;
ec91538d
JK		 674 case Opt_io_size_bits:
675 if (args->from && match_int(args, &arg))
676 return -EINVAL;
6d52e135 677 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
dcbb4c10
JP		 678 f2fs_warn(sbi, "Not support %d, larger than %d",
679 1 << arg, BIO_MAX_PAGES);
ec91538d
JK		 680 return -EINVAL;
681 }
63189b78 682 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 683 break;
4cb037ec 684#ifdef CONFIG_F2FS_FAULT_INJECTION
73faec4d
JK		 685 case Opt_fault_injection:
686 if (args->from && match_int(args, &arg))
687 return -EINVAL;
d494500a
CY		 688 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
689 set_opt(sbi, FAULT_INJECTION);
d494500a 690 break;
4cb037ec 691
d494500a
CY		 692 case Opt_fault_type:
693 if (args->from && match_int(args, &arg))
694 return -EINVAL;
d494500a 695 f2fs_build_fault_attr(sbi, 0, arg);
0cc0dec2 696 set_opt(sbi, FAULT_INJECTION);
4cb037ec 697 break;
73faec4d 698#else
4cb037ec 699 case Opt_fault_injection:
dcbb4c10 700 f2fs_info(sbi, "fault_injection options not supported");
73faec4d 701 break;
4cb037ec
CX		 702
703 case Opt_fault_type:
dcbb4c10 704 f2fs_info(sbi, "fault_type options not supported");
4cb037ec
CX		 705 break;
706#endif
6d94c74a 707 case Opt_lazytime:
1751e8a6 708 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 709 break;
710 case Opt_nolazytime:
1751e8a6 711 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 712 break;
0abd675e 713#ifdef CONFIG_QUOTA
4b2414d0 714 case Opt_quota:
0abd675e
CY		 715 case Opt_usrquota:
716 set_opt(sbi, USRQUOTA);
717 break;
718 case Opt_grpquota:
719 set_opt(sbi, GRPQUOTA);
720 break;
5c57132e
CY		 721 case Opt_prjquota:
722 set_opt(sbi, PRJQUOTA);
723 break;
4b2414d0
CY		 724 case Opt_usrjquota:
725 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
726 if (ret)
727 return ret;
728 break;
729 case Opt_grpjquota:
730 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
731 if (ret)
732 return ret;
733 break;
734 case Opt_prjjquota:
735 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
736 if (ret)
737 return ret;
738 break;
739 case Opt_offusrjquota:
740 ret = f2fs_clear_qf_name(sb, USRQUOTA);
741 if (ret)
742 return ret;
743 break;
744 case Opt_offgrpjquota:
745 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
746 if (ret)
747 return ret;
748 break;
749 case Opt_offprjjquota:
750 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
751 if (ret)
752 return ret;
753 break;
754 case Opt_jqfmt_vfsold:
63189b78 755 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 756 break;
757 case Opt_jqfmt_vfsv0:
63189b78 758 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 759 break;
760 case Opt_jqfmt_vfsv1:
63189b78 761 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 762 break;
763 case Opt_noquota:
764 clear_opt(sbi, QUOTA);
765 clear_opt(sbi, USRQUOTA);
766 clear_opt(sbi, GRPQUOTA);
767 clear_opt(sbi, PRJQUOTA);
768 break;
0abd675e 769#else
4b2414d0 770 case Opt_quota:
0abd675e
CY		 771 case Opt_usrquota:
772 case Opt_grpquota:
5c57132e 773 case Opt_prjquota:
4b2414d0
CY		 774 case Opt_usrjquota:
775 case Opt_grpjquota:
776 case Opt_prjjquota:
777 case Opt_offusrjquota:
778 case Opt_offgrpjquota:
779 case Opt_offprjjquota:
780 case Opt_jqfmt_vfsold:
781 case Opt_jqfmt_vfsv0:
782 case Opt_jqfmt_vfsv1:
783 case Opt_noquota:
dcbb4c10 784 f2fs_info(sbi, "quota operations not supported");
0abd675e
CY		 785 break;
786#endif
0cdd3195
HL		 787 case Opt_whint:
788 name = match_strdup(&args[0]);
789 if (!name)
790 return -ENOMEM;
3c57f751 791 if (!strcmp(name, "user-based")) {
63189b78 792 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
3c57f751 793 } else if (!strcmp(name, "off")) {
63189b78 794 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
3c57f751 795 } else if (!strcmp(name, "fs-based")) {
63189b78 796 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
0cdd3195 797 } else {
ba87a45c 798 kfree(name);
0cdd3195
HL		 799 return -EINVAL;
800 }
ba87a45c 801 kfree(name);
0cdd3195 802 break;
07939627
JK		 803 case Opt_alloc:
804 name = match_strdup(&args[0]);
805 if (!name)
806 return -ENOMEM;
807
3c57f751 808 if (!strcmp(name, "default")) {
63189b78 809 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
3c57f751 810 } else if (!strcmp(name, "reuse")) {
63189b78 811 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627 812 } else {
ba87a45c 813 kfree(name);
07939627
JK		 814 return -EINVAL;
815 }
ba87a45c 816 kfree(name);
07939627 817 break;
93cf93f1
JZ		 818 case Opt_fsync:
819 name = match_strdup(&args[0]);
820 if (!name)
821 return -ENOMEM;
3c57f751 822 if (!strcmp(name, "posix")) {
63189b78 823 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
3c57f751 824 } else if (!strcmp(name, "strict")) {
63189b78 825 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
3c57f751 826 } else if (!strcmp(name, "nobarrier")) {
d6290814
JK		 827 F2FS_OPTION(sbi).fsync_mode =
828 FSYNC_MODE_NOBARRIER;
93cf93f1 829 } else {
ba87a45c 830 kfree(name);
93cf93f1
JZ		 831 return -EINVAL;
832 }
ba87a45c 833 kfree(name);
93cf93f1 834 break;
ff62af20 835 case Opt_test_dummy_encryption:
ed318a6c
EB		 836 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0],
837 is_remount);
838 if (ret)
839 return ret;
ff62af20 840 break;
27aacd28
ST		 841 case Opt_inlinecrypt:
842#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
843 sb->s_flags |= SB_INLINECRYPT;
844#else
845 f2fs_info(sbi, "inline encryption not supported");
846#endif
847 break;
4d3aed70
DR		 848 case Opt_checkpoint_disable_cap_perc:
849 if (args->from && match_int(args, &arg))
4354994f 850 return -EINVAL;
4d3aed70
DR		 851 if (arg < 0 || arg > 100)
852 return -EINVAL;
1ae18f71 853 F2FS_OPTION(sbi).unusable_cap_perc = arg;
4d3aed70
DR		 854 set_opt(sbi, DISABLE_CHECKPOINT);
855 break;
856 case Opt_checkpoint_disable_cap:
857 if (args->from && match_int(args, &arg))
858 return -EINVAL;
859 F2FS_OPTION(sbi).unusable_cap = arg;
860 set_opt(sbi, DISABLE_CHECKPOINT);
861 break;
862 case Opt_checkpoint_disable:
863 set_opt(sbi, DISABLE_CHECKPOINT);
864 break;
865 case Opt_checkpoint_enable:
866 clear_opt(sbi, DISABLE_CHECKPOINT);
4354994f 867 break;
1f0b067b 868#ifdef CONFIG_F2FS_FS_COMPRESSION
4c8ff709
CY		 869 case Opt_compress_algorithm:
870 if (!f2fs_sb_has_compression(sbi)) {
871 f2fs_err(sbi, "Compression feature if off");
872 return -EINVAL;
873 }
874 name = match_strdup(&args[0]);
875 if (!name)
876 return -ENOMEM;
3c57f751 877 if (!strcmp(name, "lzo")) {
4c8ff709
CY		 878 F2FS_OPTION(sbi).compress_algorithm =
879 COMPRESS_LZO;
3c57f751 880 } else if (!strcmp(name, "lz4")) {
4c8ff709
CY		 881 F2FS_OPTION(sbi).compress_algorithm =
882 COMPRESS_LZ4;
3c57f751 883 } else if (!strcmp(name, "zstd")) {
50cfa66f
CY		 884 F2FS_OPTION(sbi).compress_algorithm =
885 COMPRESS_ZSTD;
6d92b201
CY		 886 } else if (!strcmp(name, "lzo-rle")) {
887 F2FS_OPTION(sbi).compress_algorithm =
888 COMPRESS_LZORLE;
4c8ff709
CY		 889 } else {
890 kfree(name);
891 return -EINVAL;
892 }
893 kfree(name);
894 break;
895 case Opt_compress_log_size:
896 if (!f2fs_sb_has_compression(sbi)) {
897 f2fs_err(sbi, "Compression feature is off");
898 return -EINVAL;
899 }
900 if (args->from && match_int(args, &arg))
901 return -EINVAL;
902 if (arg < MIN_COMPRESS_LOG_SIZE ||
903 arg > MAX_COMPRESS_LOG_SIZE) {
904 f2fs_err(sbi,
905 "Compress cluster log size is out of range");
906 return -EINVAL;
907 }
908 F2FS_OPTION(sbi).compress_log_size = arg;
909 break;
910 case Opt_compress_extension:
911 if (!f2fs_sb_has_compression(sbi)) {
912 f2fs_err(sbi, "Compression feature is off");
913 return -EINVAL;
914 }
915 name = match_strdup(&args[0]);
916 if (!name)
917 return -ENOMEM;
918
919 ext = F2FS_OPTION(sbi).extensions;
920 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
921
922 if (strlen(name) >= F2FS_EXTENSION_LEN ||
923 ext_cnt >= COMPRESS_EXT_NUM) {
924 f2fs_err(sbi,
925 "invalid extension length/number");
926 kfree(name);
927 return -EINVAL;
928 }
929
930 strcpy(ext[ext_cnt], name);
931 F2FS_OPTION(sbi).compress_ext_cnt++;
932 kfree(name);
933 break;
1f0b067b
CY		 934#else
935 case Opt_compress_algorithm:
936 case Opt_compress_log_size:
937 case Opt_compress_extension:
938 f2fs_info(sbi, "compression options not supported");
939 break;
940#endif
696c018c 941 default:
dcbb4c10
JP		 942 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
943 p);
696c018c
NJ		 944 return -EINVAL;
945 }
946 }
4b2414d0
CY		 947#ifdef CONFIG_QUOTA
948 if (f2fs_check_quota_options(sbi))
949 return -EINVAL;
00960c2c 950#else
7beb01f7 951 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 952 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
00960c2c
SY		 953 return -EINVAL;
954 }
7beb01f7 955 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 956 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
4ddc1b28
CY		 957 return -EINVAL;
958 }
4b2414d0 959#endif
5aba5430
DR		 960#ifndef CONFIG_UNICODE
961 if (f2fs_sb_has_casefold(sbi)) {
962 f2fs_err(sbi,
963 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
964 return -EINVAL;
965 }
966#endif
ec91538d 967
b0332a0f 968 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
dcbb4c10
JP		 969 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
970 F2FS_IO_SIZE_KB(sbi));
ec91538d
JK		 971 return -EINVAL;
972 }
6afc662e
CY		 973
974 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
70db5b04
JK		 975 int min_size, max_size;
976
7beb01f7
CY		 977 if (!f2fs_sb_has_extra_attr(sbi) ||
978 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
dcbb4c10 979 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
4d817ae0
CY		 980 return -EINVAL;
981 }
6afc662e 982 if (!test_opt(sbi, INLINE_XATTR)) {
dcbb4c10 983 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
6afc662e
CY		 984 return -EINVAL;
985 }
70db5b04
JK		 986
987 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
dd6c89b5 988 max_size = MAX_INLINE_XATTR_SIZE;
70db5b04
JK		 989
990 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
991 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
dcbb4c10
JP		 992 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
993 min_size, max_size);
6afc662e
CY		 994 return -EINVAL;
995 }
996 }
0cdd3195 997
b0332a0f 998 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
dcbb4c10 999 f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
4354994f
DR		 1000 return -EINVAL;
1001 }
1002
0cdd3195
HL		 1003 /* Not pass down write hints if the number of active logs is lesser
1004 * than NR_CURSEG_TYPE.
1005 */
63189b78
CY		 1006 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
1007 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 1008 return 0;
1009}
1010
aff063e2
JK		 1011static struct inode *f2fs_alloc_inode(struct super_block *sb)
1012{
1013 struct f2fs_inode_info *fi;
1014
a0acdfe0 1015 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 1016 if (!fi)
1017 return NULL;
1018
1019 init_once((void *) fi);
1020
434720fa 1021 /* Initialize f2fs-specific inode info */
204706c7 1022 atomic_set(&fi->dirty_pages, 0);
d928bfbf 1023 init_rwsem(&fi->i_sem);
c10c9820 1024 spin_lock_init(&fi->i_size_lock);
2710fd7e 1025 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 1026 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 1027 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 1028 INIT_LIST_HEAD(&fi->inmem_pages);
1029 mutex_init(&fi->inmem_lock);
b2532c69
CY		 1030 init_rwsem(&fi->i_gc_rwsem[READ]);
1031 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 1032 init_rwsem(&fi->i_mmap_sem);
27161f13 1033 init_rwsem(&fi->i_xattr_sem);
aff063e2 1034
ab9fa662
JK		 1035 /* Will be used by directory only */
1036 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 1037
6b12367d
JK		 1038 fi->ra_offset = -1;
1039
aff063e2
JK		 1040 return &fi->vfs_inode;
1041}
1042
531ad7d5
JK		 1043static int f2fs_drop_inode(struct inode *inode)
1044{
a8933b6b 1045 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
b8d96a30 1046 int ret;
a8933b6b
CY		 1047
1048 /*
1049 * during filesystem shutdown, if checkpoint is disabled,
1050 * drop useless meta/node dirty pages.
1051 */
1052 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1053 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1054 inode->i_ino == F2FS_META_INO(sbi)) {
1055 trace_f2fs_drop_inode(inode, 1);
1056 return 1;
1057 }
1058 }
1059
531ad7d5
JK		 1060 /*
1061 * This is to avoid a deadlock condition like below.
1062 * writeback_single_inode(inode)
1063 * - f2fs_write_data_page
1064 * - f2fs_gc -> iput -> evict
1065 * - inode_wait_for_writeback(inode)
1066 */
0f18b462 1067 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 1068 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 1069 /* to avoid evict_inode call simultaneously */
1070 atomic_inc(&inode->i_count);
06e1bc05
JK		 1071 spin_unlock(&inode->i_lock);
1072
1073 /* some remained atomic pages should discarded */
1074 if (f2fs_is_atomic_file(inode))
4d57b86d 1075 f2fs_drop_inmem_pages(inode);
06e1bc05 1076
3e72f721
JK		 1077 /* should remain fi->extent_tree for writepage */
1078 f2fs_destroy_extent_node(inode);
1079
06e1bc05 1080 sb_start_intwrite(inode->i_sb);
fc9581c8 1081 f2fs_i_size_write(inode, 0);
06e1bc05 1082
a0770e13 1083 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1084 inode, NULL, 0, DATA);
1085 truncate_inode_pages_final(inode->i_mapping);
1086
06e1bc05 1087 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 1088 f2fs_truncate(inode);
06e1bc05
JK		 1089
1090 sb_end_intwrite(inode->i_sb);
1091
06e1bc05 1092 spin_lock(&inode->i_lock);
3e72f721 1093 atomic_dec(&inode->i_count);
06e1bc05 1094 }
b8d96a30 1095 trace_f2fs_drop_inode(inode, 0);
531ad7d5 1096 return 0;
06e1bc05 1097 }
b8d96a30 1098 ret = generic_drop_inode(inode);
8ce589c7
EB		 1099 if (!ret)
1100 ret = fscrypt_drop_inode(inode);
b8d96a30
HP		 1101 trace_f2fs_drop_inode(inode, ret);
1102 return ret;
531ad7d5
JK		 1103}
1104
7c45729a 1105int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 1106{
0f18b462 1107 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 1108 int ret = 0;
0f18b462 1109
0f18b462
JK		 1110 spin_lock(&sbi->inode_lock[DIRTY_META]);
1111 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 1112 ret = 1;
1113 } else {
1114 set_inode_flag(inode, FI_DIRTY_INODE);
1115 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 1116 }
7c45729a
JK		 1117 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1118 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 1119 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 1120 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1121 }
338bbfa0 1122 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 1123 return ret;
0f18b462
JK		 1124}
1125
1126void f2fs_inode_synced(struct inode *inode)
1127{
1128 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1129
1130 spin_lock(&sbi->inode_lock[DIRTY_META]);
1131 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1132 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1133 return;
1134 }
7c45729a
JK		 1135 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1136 list_del_init(&F2FS_I(inode)->gdirty_list);
1137 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1138 }
0f18b462 1139 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 1140 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 1141 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 1142 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 1143}
1144
b56ab837
JK		 1145/*
1146 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1147 *
1148 * We should call set_dirty_inode to write the dirty inode through write_inode.
1149 */
1150static void f2fs_dirty_inode(struct inode *inode, int flags)
1151{
1152 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1153
1154 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1155 inode->i_ino == F2FS_META_INO(sbi))
1156 return;
1157
1158 if (flags == I_DIRTY_TIME)
1159 return;
1160
1161 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1162 clear_inode_flag(inode, FI_AUTO_RECOVER);
1163
7c45729a 1164 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 1165}
1166
d01718a0 1167static void f2fs_free_inode(struct inode *inode)
aff063e2 1168{
2c58d548 1169 fscrypt_free_inode(inode);
aff063e2
JK		 1170 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1171}
1172
523be8a6
JK		 1173static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1174{
41382ec4 1175 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 1176 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 1177}
1178
3c62be17
JK		 1179static void destroy_device_list(struct f2fs_sb_info *sbi)
1180{
1181 int i;
1182
1183 for (i = 0; i < sbi->s_ndevs; i++) {
1184 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1185#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1186 kvfree(FDEV(i).blkz_seq);
de881df9 1187 kfree(FDEV(i).zone_capacity_blocks);
3c62be17
JK		 1188#endif
1189 }
5222595d 1190 kvfree(sbi->devs);
3c62be17
JK		 1191}
1192
aff063e2
JK		 1193static void f2fs_put_super(struct super_block *sb)
1194{
1195 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1196 int i;
cf5c759f 1197 bool dropped;
aff063e2 1198
99c787cf
LG		 1199 /* unregister procfs/sysfs entries in advance to avoid race case */
1200 f2fs_unregister_sysfs(sbi);
1201
0abd675e 1202 f2fs_quota_off_umount(sb);
aff063e2 1203
2658e50d
JK		 1204 /* prevent remaining shrinker jobs */
1205 mutex_lock(&sbi->umount_mutex);
1206
85dc2f2c
JK		 1207 /*
1208 * We don't need to do checkpoint when superblock is clean.
1209 * But, the previous checkpoint was not done by umount, it needs to do
1210 * clean checkpoint again.
1211 */
4354994f
DR		 1212 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1213 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1214 struct cp_control cpc = {
1215 .reason = CP_UMOUNT,
1216 };
4d57b86d 1217 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1218 }
aff063e2 1219
4e6a8d9b 1220 /* be sure to wait for any on-going discard commands */
03f2c02d 1221 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1222
7d20c8ab
CY		 1223 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1224 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1225 struct cp_control cpc = {
1226 .reason = CP_UMOUNT | CP_TRIMMED,
1227 };
4d57b86d 1228 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1229 }
1230
cf779cab
JK		 1231 /*
1232 * normally superblock is clean, so we need to release this.
1233 * In addition, EIO will skip do checkpoint, we need this as well.
1234 */
4d57b86d 1235 f2fs_release_ino_entry(sbi, true);
6f12ac25 1236
2658e50d
JK		 1237 f2fs_leave_shrinker(sbi);
1238 mutex_unlock(&sbi->umount_mutex);
1239
17c19120 1240 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1241 f2fs_flush_merged_writes(sbi);
17c19120 1242
bf22c3cc 1243 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
50fa53ec
CY		 1244
1245 f2fs_bug_on(sbi, sbi->fsync_node_num);
1246
aff063e2 1247 iput(sbi->node_inode);
7c77bf7d
JK		 1248 sbi->node_inode = NULL;
1249
aff063e2 1250 iput(sbi->meta_inode);
7c77bf7d 1251 sbi->meta_inode = NULL;
aff063e2 1252
60aa4d55
ST		 1253 /*
1254 * iput() can update stat information, if f2fs_write_checkpoint()
1255 * above failed with error.
1256 */
1257 f2fs_destroy_stats(sbi);
1258
aff063e2 1259 /* destroy f2fs internal modules */
4d57b86d
CY		 1260 f2fs_destroy_node_manager(sbi);
1261 f2fs_destroy_segment_manager(sbi);
aff063e2 1262
4c8ff709
CY		 1263 f2fs_destroy_post_read_wq(sbi);
1264
5222595d 1265 kvfree(sbi->ckpt);
a398101a 1266
aff063e2 1267 sb->s_fs_info = NULL;
43b6573b
KM		 1268 if (sbi->s_chksum_driver)
1269 crypto_free_shash(sbi->s_chksum_driver);
742532d1 1270 kfree(sbi->raw_super);
523be8a6 1271
3c62be17 1272 destroy_device_list(sbi);
a999150f 1273 f2fs_destroy_xattr_caches(sbi);
b6895e8f 1274 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1275#ifdef CONFIG_QUOTA
1276 for (i = 0; i < MAXQUOTAS; i++)
ba87a45c 1277 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1278#endif
ed318a6c 1279 fscrypt_free_dummy_context(&F2FS_OPTION(sbi).dummy_enc_ctx);
523be8a6 1280 destroy_percpu_info(sbi);
a912b54d 1281 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 1282 kvfree(sbi->write_io[i]);
5aba5430
DR		 1283#ifdef CONFIG_UNICODE
1284 utf8_unload(sbi->s_encoding);
1285#endif
742532d1 1286 kfree(sbi);
aff063e2
JK		 1287}
1288
1289int f2fs_sync_fs(struct super_block *sb, int sync)
1290{
1291 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1292 int err = 0;
aff063e2 1293
1f227a3e
JK		 1294 if (unlikely(f2fs_cp_error(sbi)))
1295 return 0;
4354994f
DR		 1296 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1297 return 0;
1f227a3e 1298
a2a4a7e4
NJ		 1299 trace_f2fs_sync_fs(sb, sync);
1300
4b2414d0
CY		 1301 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1302 return -EAGAIN;
1303
b7473754 1304 if (sync) {
d5053a34
JK		 1305 struct cp_control cpc;
1306
119ee914
JK		 1307 cpc.reason = __get_cp_reason(sbi);
1308
fb24fea7 1309 down_write(&sbi->gc_lock);
4d57b86d 1310 err = f2fs_write_checkpoint(sbi, &cpc);
fb24fea7 1311 up_write(&sbi->gc_lock);
b7473754 1312 }
05ca3632 1313 f2fs_trace_ios(NULL, 1);
aff063e2 1314
c34f42e2 1315 return err;
aff063e2
JK		 1316}
1317
d6212a5f
CL		 1318static int f2fs_freeze(struct super_block *sb)
1319{
77888c1e 1320 if (f2fs_readonly(sb))
d6212a5f
CL		 1321 return 0;
1322
b4b9d34c
JK		 1323 /* IO error happened before */
1324 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1325 return -EIO;
1326
1327 /* must be clean, since sync_filesystem() was already called */
1328 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1329 return -EINVAL;
1330 return 0;
d6212a5f
CL		 1331}
1332
1333static int f2fs_unfreeze(struct super_block *sb)
1334{
1335 return 0;
1336}
1337
ddc34e32
CY		 1338#ifdef CONFIG_QUOTA
1339static int f2fs_statfs_project(struct super_block *sb,
1340 kprojid_t projid, struct kstatfs *buf)
1341{
1342 struct kqid qid;
1343 struct dquot *dquot;
1344 u64 limit;
1345 u64 curblock;
1346
1347 qid = make_kqid_projid(projid);
1348 dquot = dqget(sb, qid);
1349 if (IS_ERR(dquot))
1350 return PTR_ERR(dquot);
955ac6e5 1351 spin_lock(&dquot->dq_dqb_lock);
ddc34e32 1352
bf2cbd3c
CX		 1353 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1354 dquot->dq_dqb.dqb_bhardlimit);
acdf2172
CX		 1355 if (limit)
1356 limit >>= sb->s_blocksize_bits;
909110c0 1357
ddc34e32 1358 if (limit && buf->f_blocks > limit) {
baaa7ebf
KK		 1359 curblock = (dquot->dq_dqb.dqb_curspace +
1360 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
ddc34e32
CY		 1361 buf->f_blocks = limit;
1362 buf->f_bfree = buf->f_bavail =
1363 (buf->f_blocks > curblock) ?
1364 (buf->f_blocks - curblock) : 0;
1365 }
1366
bf2cbd3c
CX		 1367 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1368 dquot->dq_dqb.dqb_ihardlimit);
909110c0 1369
ddc34e32
CY		 1370 if (limit && buf->f_files > limit) {
1371 buf->f_files = limit;
1372 buf->f_ffree =
1373 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1374 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1375 }
1376
955ac6e5 1377 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1378 dqput(dquot);
1379 return 0;
1380}
1381#endif
1382
aff063e2
JK		 1383static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1384{
1385 struct super_block *sb = dentry->d_sb;
1386 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1387 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1388 block_t total_count, user_block_count, start_count;
0cc091d0 1389 u64 avail_node_count;
aff063e2
JK		 1390
1391 total_count = le64_to_cpu(sbi->raw_super->block_count);
1392 user_block_count = sbi->user_block_count;
1393 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1394 buf->f_type = F2FS_SUPER_MAGIC;
1395 buf->f_bsize = sbi->blocksize;
1396
1397 buf->f_blocks = total_count - start_count;
f66c027e 1398 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1399 sbi->current_reserved_blocks;
c9c8ed50
CY		 1400
1401 spin_lock(&sbi->stat_lock);
4354994f
DR		 1402 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1403 buf->f_bfree = 0;
1404 else
1405 buf->f_bfree -= sbi->unusable_block_count;
c9c8ed50 1406 spin_unlock(&sbi->stat_lock);
4354994f 1407
63189b78
CY		 1408 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1409 buf->f_bavail = buf->f_bfree -
1410 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1411 else
1412 buf->f_bavail = 0;
aff063e2 1413
27cae0bc 1414 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1415
1416 if (avail_node_count > user_block_count) {
1417 buf->f_files = user_block_count;
1418 buf->f_ffree = buf->f_bavail;
1419 } else {
1420 buf->f_files = avail_node_count;
1421 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1422 buf->f_bavail);
1423 }
aff063e2 1424
5a20d339 1425 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1426 buf->f_fsid.val[0] = (u32)id;
1427 buf->f_fsid.val[1] = (u32)(id >> 32);
1428
ddc34e32
CY		 1429#ifdef CONFIG_QUOTA
1430 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1431 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1432 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1433 }
1434#endif
aff063e2
JK		 1435 return 0;
1436}
1437
4b2414d0
CY		 1438static inline void f2fs_show_quota_options(struct seq_file *seq,
1439 struct super_block *sb)
1440{
1441#ifdef CONFIG_QUOTA
1442 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1443
63189b78 1444 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1445 char *fmtname = "";
1446
63189b78 1447 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1448 case QFMT_VFS_OLD:
1449 fmtname = "vfsold";
1450 break;
1451 case QFMT_VFS_V0:
1452 fmtname = "vfsv0";
1453 break;
1454 case QFMT_VFS_V1:
1455 fmtname = "vfsv1";
1456 break;
1457 }
1458 seq_printf(seq, ",jqfmt=%s", fmtname);
1459 }
1460
63189b78
CY		 1461 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1462 seq_show_option(seq, "usrjquota",
1463 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1464
63189b78
CY		 1465 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1466 seq_show_option(seq, "grpjquota",
1467 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1468
63189b78
CY		 1469 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1470 seq_show_option(seq, "prjjquota",
1471 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1472#endif
1473}
1474
4c8ff709
CY		 1475static inline void f2fs_show_compress_options(struct seq_file *seq,
1476 struct super_block *sb)
1477{
1478 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1479 char *algtype = "";
1480 int i;
1481
1482 if (!f2fs_sb_has_compression(sbi))
1483 return;
1484
1485 switch (F2FS_OPTION(sbi).compress_algorithm) {
1486 case COMPRESS_LZO:
1487 algtype = "lzo";
1488 break;
1489 case COMPRESS_LZ4:
1490 algtype = "lz4";
1491 break;
50cfa66f
CY		 1492 case COMPRESS_ZSTD:
1493 algtype = "zstd";
1494 break;
6d92b201
CY		 1495 case COMPRESS_LZORLE:
1496 algtype = "lzo-rle";
1497 break;
4c8ff709
CY		 1498 }
1499 seq_printf(seq, ",compress_algorithm=%s", algtype);
1500
1501 seq_printf(seq, ",compress_log_size=%u",
1502 F2FS_OPTION(sbi).compress_log_size);
1503
1504 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1505 seq_printf(seq, ",compress_extension=%s",
1506 F2FS_OPTION(sbi).extensions[i]);
1507 }
1508}
1509
aff063e2
JK		 1510static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1511{
1512 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1513
bbbc34fd
CY		 1514 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1515 seq_printf(seq, ",background_gc=%s", "sync");
1516 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1517 seq_printf(seq, ",background_gc=%s", "on");
1518 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
696c018c 1519 seq_printf(seq, ",background_gc=%s", "off");
bbbc34fd 1520
aff063e2
JK		 1521 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1522 seq_puts(seq, ",disable_roll_forward");
a9117eca
CY		 1523 if (test_opt(sbi, NORECOVERY))
1524 seq_puts(seq, ",norecovery");
aff063e2
JK		 1525 if (test_opt(sbi, DISCARD))
1526 seq_puts(seq, ",discard");
81621f97
ST		 1527 else
1528 seq_puts(seq, ",nodiscard");
aff063e2 1529 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1530 seq_puts(seq, ",no_heap");
1531 else
1532 seq_puts(seq, ",heap");
aff063e2
JK		 1533#ifdef CONFIG_F2FS_FS_XATTR
1534 if (test_opt(sbi, XATTR_USER))
1535 seq_puts(seq, ",user_xattr");
1536 else
1537 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1538 if (test_opt(sbi, INLINE_XATTR))
1539 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1540 else
1541 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1542 if (test_opt(sbi, INLINE_XATTR_SIZE))
1543 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1544 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1545#endif
1546#ifdef CONFIG_F2FS_FS_POSIX_ACL
1547 if (test_opt(sbi, POSIX_ACL))
1548 seq_puts(seq, ",acl");
1549 else
1550 seq_puts(seq, ",noacl");
1551#endif
1552 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1553 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1554 if (test_opt(sbi, INLINE_DATA))
1555 seq_puts(seq, ",inline_data");
75342797
WL		 1556 else
1557 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1558 if (test_opt(sbi, INLINE_DENTRY))
1559 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1560 else
1561 seq_puts(seq, ",noinline_dentry");
b270ad6f 1562 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1563 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1564 if (test_opt(sbi, NOBARRIER))
1565 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1566 if (test_opt(sbi, FASTBOOT))
1567 seq_puts(seq, ",fastboot");
89672159
CY		 1568 if (test_opt(sbi, EXTENT_CACHE))
1569 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1570 else
1571 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1572 if (test_opt(sbi, DATA_FLUSH))
1573 seq_puts(seq, ",data_flush");
36abef4e
JK		 1574
1575 seq_puts(seq, ",mode=");
b0332a0f 1576 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
36abef4e 1577 seq_puts(seq, "adaptive");
b0332a0f 1578 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
36abef4e 1579 seq_puts(seq, "lfs");
63189b78 1580 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1581 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1582 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1583 F2FS_OPTION(sbi).root_reserved_blocks,
1584 from_kuid_munged(&init_user_ns,
1585 F2FS_OPTION(sbi).s_resuid),
1586 from_kgid_munged(&init_user_ns,
1587 F2FS_OPTION(sbi).s_resgid));
ec91538d 1588 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1589 seq_printf(seq, ",io_bits=%u",
1590 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1591#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1592 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1593 seq_printf(seq, ",fault_injection=%u",
63189b78 1594 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1595 seq_printf(seq, ",fault_type=%u",
1596 F2FS_OPTION(sbi).fault_info.inject_type);
1597 }
0cc0dec2 1598#endif
0abd675e 1599#ifdef CONFIG_QUOTA
4b2414d0
CY		 1600 if (test_opt(sbi, QUOTA))
1601 seq_puts(seq, ",quota");
0abd675e
CY		 1602 if (test_opt(sbi, USRQUOTA))
1603 seq_puts(seq, ",usrquota");
1604 if (test_opt(sbi, GRPQUOTA))
1605 seq_puts(seq, ",grpquota");
5c57132e
CY		 1606 if (test_opt(sbi, PRJQUOTA))
1607 seq_puts(seq, ",prjquota");
0cc0dec2 1608#endif
4b2414d0 1609 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1610 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1611 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1612 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1613 seq_printf(seq, ",whint_mode=%s", "fs-based");
ed318a6c
EB		 1614
1615 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
aff063e2 1616
27aacd28
ST		 1617 if (sbi->sb->s_flags & SB_INLINECRYPT)
1618 seq_puts(seq, ",inlinecrypt");
1619
63189b78 1620 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1621 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1622 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1623 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1624
4354994f 1625 if (test_opt(sbi, DISABLE_CHECKPOINT))
4d3aed70
DR		 1626 seq_printf(seq, ",checkpoint=disable:%u",
1627 F2FS_OPTION(sbi).unusable_cap);
63189b78 1628 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1629 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1630 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1631 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1632 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1633 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
4c8ff709 1634
1f0b067b 1635#ifdef CONFIG_F2FS_FS_COMPRESSION
4c8ff709 1636 f2fs_show_compress_options(seq, sbi->sb);
1f0b067b 1637#endif
aff063e2
JK		 1638 return 0;
1639}
1640
498c5e9f
YH		 1641static void default_options(struct f2fs_sb_info *sbi)
1642{
1643 /* init some FS parameters */
63189b78
CY		 1644 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1645 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1646 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1647 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1648 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
0aa7e0f8
CY		 1649 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1650 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
91faa534 1651 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
4c8ff709
CY		 1652 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
1653 F2FS_OPTION(sbi).compress_ext_cnt = 0;
bbbc34fd 1654 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
498c5e9f 1655
27aacd28
ST		 1656 sbi->sb->s_flags &= ~SB_INLINECRYPT;
1657
39133a50 1658 set_opt(sbi, INLINE_XATTR);
498c5e9f 1659 set_opt(sbi, INLINE_DATA);
97c1794a 1660 set_opt(sbi, INLINE_DENTRY);
3e72f721 1661 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1662 set_opt(sbi, NOHEAP);
4354994f 1663 clear_opt(sbi, DISABLE_CHECKPOINT);
4d3aed70 1664 F2FS_OPTION(sbi).unusable_cap = 0;
1751e8a6 1665 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1666 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1667 set_opt(sbi, DISCARD);
7beb01f7 1668 if (f2fs_sb_has_blkzoned(sbi))
b0332a0f 1669 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
a39e5365 1670 else
b0332a0f 1671 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
498c5e9f
YH		 1672
1673#ifdef CONFIG_F2FS_FS_XATTR
1674 set_opt(sbi, XATTR_USER);
1675#endif
1676#ifdef CONFIG_F2FS_FS_POSIX_ACL
1677 set_opt(sbi, POSIX_ACL);
1678#endif
36dbd328 1679
d494500a 1680 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1681}
1682
ea676733
JK		 1683#ifdef CONFIG_QUOTA
1684static int f2fs_enable_quotas(struct super_block *sb);
1685#endif
4354994f
DR		 1686
1687static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1688{
812a9597 1689 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1690 struct cp_control cpc;
812a9597
JK		 1691 int err = 0;
1692 int ret;
4d3aed70 1693 block_t unusable;
4354994f 1694
812a9597 1695 if (s_flags & SB_RDONLY) {
dcbb4c10 1696 f2fs_err(sbi, "checkpoint=disable on readonly fs");
812a9597
JK		 1697 return -EINVAL;
1698 }
4354994f
DR		 1699 sbi->sb->s_flags |= SB_ACTIVE;
1700
4354994f
DR		 1701 f2fs_update_time(sbi, DISABLE_TIME);
1702
1703 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
fb24fea7 1704 down_write(&sbi->gc_lock);
4354994f 1705 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1706 if (err == -ENODATA) {
1707 err = 0;
4354994f 1708 break;
812a9597 1709 }
8f31b466 1710 if (err && err != -EAGAIN)
812a9597 1711 break;
4354994f 1712 }
4354994f 1713
812a9597
JK		 1714 ret = sync_filesystem(sbi->sb);
1715 if (ret || err) {
1716 err = ret ? ret: err;
1717 goto restore_flag;
1718 }
4354994f 1719
4d3aed70
DR		 1720 unusable = f2fs_get_unusable_blocks(sbi);
1721 if (f2fs_disable_cp_again(sbi, unusable)) {
812a9597
JK		 1722 err = -EAGAIN;
1723 goto restore_flag;
1724 }
4354994f 1725
fb24fea7 1726 down_write(&sbi->gc_lock);
4354994f
DR		 1727 cpc.reason = CP_PAUSE;
1728 set_sbi_flag(sbi, SBI_CP_DISABLED);
896285ad
CY		 1729 err = f2fs_write_checkpoint(sbi, &cpc);
1730 if (err)
1731 goto out_unlock;
4354994f 1732
c9c8ed50 1733 spin_lock(&sbi->stat_lock);
4d3aed70 1734 sbi->unusable_block_count = unusable;
c9c8ed50
CY		 1735 spin_unlock(&sbi->stat_lock);
1736
896285ad 1737out_unlock:
fb24fea7 1738 up_write(&sbi->gc_lock);
812a9597 1739restore_flag:
7a88ddb5 1740 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
812a9597 1741 return err;
4354994f
DR		 1742}
1743
1744static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1745{
fb24fea7 1746 down_write(&sbi->gc_lock);
4354994f
DR		 1747 f2fs_dirty_to_prefree(sbi);
1748
1749 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1750 set_sbi_flag(sbi, SBI_IS_DIRTY);
fb24fea7 1751 up_write(&sbi->gc_lock);
4354994f
DR		 1752
1753 f2fs_sync_fs(sbi->sb, 1);
1754}
1755
696c018c
NJ		 1756static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1757{
1758 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1759 struct f2fs_mount_info org_mount_opt;
0abd675e 1760 unsigned long old_sb_flags;
63189b78 1761 int err;
876dc59e
GZ		 1762 bool need_restart_gc = false;
1763 bool need_stop_gc = false;
9cd81ce3 1764 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f 1765 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1f78adfa 1766 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
4354994f 1767 bool checkpoint_changed;
4b2414d0 1768#ifdef CONFIG_QUOTA
4b2414d0
CY		 1769 int i, j;
1770#endif
696c018c
NJ		 1771
1772 /*
1773 * Save the old mount options in case we
1774 * need to restore them.
1775 */
1776 org_mount_opt = sbi->mount_opt;
0abd675e 1777 old_sb_flags = sb->s_flags;
696c018c 1778
4b2414d0 1779#ifdef CONFIG_QUOTA
63189b78 1780 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1781 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1782 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1783 org_mount_opt.s_qf_names[i] =
1784 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1785 GFP_KERNEL);
1786 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1787 for (j = 0; j < i; j++)
ba87a45c 1788 kfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1789 return -ENOMEM;
1790 }
1791 } else {
63189b78 1792 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1793 }
1794 }
1795#endif
1796
df728b0f 1797 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1798 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f 1799 err = f2fs_commit_super(sbi, false);
dcbb4c10
JP		 1800 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1801 err);
df728b0f
JK		 1802 if (!err)
1803 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1804 }
1805
498c5e9f 1806 default_options(sbi);
26666c8a 1807
696c018c 1808 /* parse mount options */
ed318a6c 1809 err = parse_options(sb, data, true);
696c018c
NJ		 1810 if (err)
1811 goto restore_opts;
4354994f
DR		 1812 checkpoint_changed =
1813 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1814
1815 /*
1816 * Previous and new state of filesystem is RO,
876dc59e 1817 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1818 */
1751e8a6 1819 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1820 goto skip;
1821
ea676733 1822#ifdef CONFIG_QUOTA
1751e8a6 1823 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1824 err = dquot_suspend(sb, -1);
1825 if (err < 0)
1826 goto restore_opts;
4354994f 1827 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1828 /* dquot_resume needs RW */
1751e8a6 1829 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1830 if (sb_any_quota_suspended(sb)) {
1831 dquot_resume(sb, -1);
7beb01f7 1832 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1833 err = f2fs_enable_quotas(sb);
1834 if (err)
1835 goto restore_opts;
1836 }
0abd675e 1837 }
ea676733 1838#endif
9cd81ce3
CY		 1839 /* disallow enable/disable extent_cache dynamically */
1840 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1841 err = -EINVAL;
dcbb4c10 1842 f2fs_warn(sbi, "switch extent_cache option is not allowed");
9cd81ce3
CY		 1843 goto restore_opts;
1844 }
1845
1f78adfa
CY		 1846 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
1847 err = -EINVAL;
1848 f2fs_warn(sbi, "switch io_bits option is not allowed");
1849 goto restore_opts;
1850 }
1851
4354994f
DR		 1852 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1853 err = -EINVAL;
dcbb4c10 1854 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
4354994f
DR		 1855 goto restore_opts;
1856 }
1857
696c018c
NJ		 1858 /*
1859 * We stop the GC thread if FS is mounted as RO
1860 * or if background_gc = off is passed in mount
1861 * option. Also sync the filesystem.
1862 */
bbbc34fd
CY		 1863 if ((*flags & SB_RDONLY) ||
1864 F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) {
696c018c 1865 if (sbi->gc_thread) {
4d57b86d 1866 f2fs_stop_gc_thread(sbi);
876dc59e 1867 need_restart_gc = true;
696c018c 1868 }
aba291b3 1869 } else if (!sbi->gc_thread) {
4d57b86d 1870 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1871 if (err)
1872 goto restore_opts;
876dc59e
GZ		 1873 need_stop_gc = true;
1874 }
1875
63189b78
CY		 1876 if (*flags & SB_RDONLY ||
1877 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1878 writeback_inodes_sb(sb, WB_REASON_SYNC);
1879 sync_inodes_sb(sb);
1880
1881 set_sbi_flag(sbi, SBI_IS_DIRTY);
1882 set_sbi_flag(sbi, SBI_IS_CLOSE);
1883 f2fs_sync_fs(sb, 1);
1884 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1885 }
1886
4354994f
DR		 1887 if (checkpoint_changed) {
1888 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1889 err = f2fs_disable_checkpoint(sbi);
1890 if (err)
1891 goto restore_gc;
1892 } else {
1893 f2fs_enable_checkpoint(sbi);
1894 }
1895 }
1896
876dc59e
GZ		 1897 /*
1898 * We stop issue flush thread if FS is mounted as RO
1899 * or if flush_merge is not passed in mount option.
1900 */
1751e8a6 1901 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1902 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1903 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1904 } else {
4d57b86d 1905 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1906 if (err)
a688b9d9 1907 goto restore_gc;
696c018c
NJ		 1908 }
1909skip:
4b2414d0
CY		 1910#ifdef CONFIG_QUOTA
1911 /* Release old quota file names */
1912 for (i = 0; i < MAXQUOTAS; i++)
ba87a45c 1913 kfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1914#endif
696c018c 1915 /* Update the POSIXACL Flag */
1751e8a6
LT		 1916 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1917 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1918
7e65be49 1919 limit_reserve_root(sbi);
1ae18f71 1920 adjust_unusable_cap_perc(sbi);
095680f2 1921 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1922 return 0;
876dc59e
GZ		 1923restore_gc:
1924 if (need_restart_gc) {
4d57b86d 1925 if (f2fs_start_gc_thread(sbi))
dcbb4c10 1926 f2fs_warn(sbi, "background gc thread has stopped");
876dc59e 1927 } else if (need_stop_gc) {
4d57b86d 1928 f2fs_stop_gc_thread(sbi);
876dc59e 1929 }
696c018c 1930restore_opts:
4b2414d0 1931#ifdef CONFIG_QUOTA
63189b78 1932 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1933 for (i = 0; i < MAXQUOTAS; i++) {
ba87a45c 1934 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 1935 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1936 }
1937#endif
696c018c 1938 sbi->mount_opt = org_mount_opt;
0abd675e 1939 sb->s_flags = old_sb_flags;
696c018c
NJ		 1940 return err;
1941}
1942
0abd675e
CY		 1943#ifdef CONFIG_QUOTA
1944/* Read data from quotafile */
1945static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1946 size_t len, loff_t off)
1947{
1948 struct inode *inode = sb_dqopt(sb)->files[type];
1949 struct address_space *mapping = inode->i_mapping;
1950 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1951 int offset = off & (sb->s_blocksize - 1);
1952 int tocopy;
1953 size_t toread;
1954 loff_t i_size = i_size_read(inode);
1955 struct page *page;
1956 char *kaddr;
1957
1958 if (off > i_size)
1959 return 0;
1960
1961 if (off + len > i_size)
1962 len = i_size - off;
1963 toread = len;
1964 while (toread > 0) {
1965 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1966repeat:
02117b8a 1967 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1968 if (IS_ERR(page)) {
1969 if (PTR_ERR(page) == -ENOMEM) {
5df7731f
CY		 1970 congestion_wait(BLK_RW_ASYNC,
1971 DEFAULT_IO_TIMEOUT);
4e46a023
JK		 1972 goto repeat;
1973 }
af033b2a 1974 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1975 return PTR_ERR(page);
4e46a023 1976 }
0abd675e
CY		 1977
1978 lock_page(page);
1979
1980 if (unlikely(page->mapping != mapping)) {
1981 f2fs_put_page(page, 1);
1982 goto repeat;
1983 }
1984 if (unlikely(!PageUptodate(page))) {
1985 f2fs_put_page(page, 1);
af033b2a 1986 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1987 return -EIO;
1988 }
1989
1990 kaddr = kmap_atomic(page);
1991 memcpy(data, kaddr + offset, tocopy);
1992 kunmap_atomic(kaddr);
1993 f2fs_put_page(page, 1);
1994
1995 offset = 0;
1996 toread -= tocopy;
1997 data += tocopy;
1998 blkidx++;
1999 }
2000 return len;
2001}
2002
2003/* Write to quotafile */
2004static ssize_t f2fs_quota_write(struct super_block *sb, int type,
2005 const char *data, size_t len, loff_t off)
2006{
2007 struct inode *inode = sb_dqopt(sb)->files[type];
2008 struct address_space *mapping = inode->i_mapping;
2009 const struct address_space_operations *a_ops = mapping->a_ops;
2010 int offset = off & (sb->s_blocksize - 1);
2011 size_t towrite = len;
2012 struct page *page;
62f63eea 2013 void *fsdata = NULL;
0abd675e
CY		 2014 char *kaddr;
2015 int err = 0;
2016 int tocopy;
2017
2018 while (towrite > 0) {
2019 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
2020 towrite);
4e46a023 2021retry:
0abd675e 2022 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
62f63eea 2023 &page, &fsdata);
4e46a023
JK		 2024 if (unlikely(err)) {
2025 if (err == -ENOMEM) {
5df7731f
CY		 2026 congestion_wait(BLK_RW_ASYNC,
2027 DEFAULT_IO_TIMEOUT);
4e46a023
JK		 2028 goto retry;
2029 }
af033b2a 2030 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 2031 break;
4e46a023 2032 }
0abd675e
CY		 2033
2034 kaddr = kmap_atomic(page);
2035 memcpy(kaddr + offset, data, tocopy);
2036 kunmap_atomic(kaddr);
2037 flush_dcache_page(page);
2038
2039 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
62f63eea 2040 page, fsdata);
0abd675e
CY		 2041 offset = 0;
2042 towrite -= tocopy;
2043 off += tocopy;
2044 data += tocopy;
2045 cond_resched();
2046 }
2047
2048 if (len == towrite)
6e5b5d41 2049 return err;
0abd675e
CY		 2050 inode->i_mtime = inode->i_ctime = current_time(inode);
2051 f2fs_mark_inode_dirty_sync(inode, false);
2052 return len - towrite;
2053}
2054
2055static struct dquot **f2fs_get_dquots(struct inode *inode)
2056{
2057 return F2FS_I(inode)->i_dquot;
2058}
2059
2060static qsize_t *f2fs_get_reserved_space(struct inode *inode)
2061{
2062 return &F2FS_I(inode)->i_reserved_quota;
2063}
2064
4b2414d0
CY		 2065static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
2066{
af033b2a 2067 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 2068 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
af033b2a
CY		 2069 return 0;
2070 }
2071
63189b78
CY		 2072 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
2073 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 2074}
2075
ea676733 2076int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 2077{
ea676733
JK		 2078 int enabled = 0;
2079 int i, err;
2080
7beb01f7 2081 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 2082 err = f2fs_enable_quotas(sbi->sb);
2083 if (err) {
dcbb4c10 2084 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
ea676733
JK		 2085 return 0;
2086 }
2087 return 1;
2088 }
4b2414d0
CY		 2089
2090 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 2091 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 2092 err = f2fs_quota_on_mount(sbi, i);
2093 if (!err) {
2094 enabled = 1;
2095 continue;
2096 }
dcbb4c10
JP		 2097 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2098 err, i);
4b2414d0
CY		 2099 }
2100 }
ea676733
JK		 2101 return enabled;
2102}
2103
2104static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2105 unsigned int flags)
2106{
2107 struct inode *qf_inode;
2108 unsigned long qf_inum;
2109 int err;
2110
7beb01f7 2111 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 2112
2113 qf_inum = f2fs_qf_ino(sb, type);
2114 if (!qf_inum)
2115 return -EPERM;
2116
2117 qf_inode = f2fs_iget(sb, qf_inum);
2118 if (IS_ERR(qf_inode)) {
dcbb4c10 2119 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
ea676733
JK		 2120 return PTR_ERR(qf_inode);
2121 }
2122
2123 /* Don't account quota for quota files to avoid recursion */
2124 qf_inode->i_flags |= S_NOQUOTA;
7212b95e 2125 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
ea676733
JK		 2126 iput(qf_inode);
2127 return err;
2128}
2129
2130static int f2fs_enable_quotas(struct super_block *sb)
2131{
dcbb4c10 2132 struct f2fs_sb_info *sbi = F2FS_SB(sb);
ea676733
JK		 2133 int type, err = 0;
2134 unsigned long qf_inum;
2135 bool quota_mopt[MAXQUOTAS] = {
dcbb4c10
JP		 2136 test_opt(sbi, USRQUOTA),
2137 test_opt(sbi, GRPQUOTA),
2138 test_opt(sbi, PRJQUOTA),
ea676733
JK		 2139 };
2140
af033b2a 2141 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 2142 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
af033b2a
CY		 2143 return 0;
2144 }
2145
2146 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2147
ea676733
JK		 2148 for (type = 0; type < MAXQUOTAS; type++) {
2149 qf_inum = f2fs_qf_ino(sb, type);
2150 if (qf_inum) {
2151 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2152 DQUOT_USAGE_ENABLED |
2153 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2154 if (err) {
dcbb4c10
JP		 2155 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2156 type, err);
ea676733
JK		 2157 for (type--; type >= 0; type--)
2158 dquot_quota_off(sb, type);
af033b2a
CY		 2159 set_sbi_flag(F2FS_SB(sb),
2160 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 2161 return err;
2162 }
4b2414d0
CY		 2163 }
2164 }
ea676733 2165 return 0;
4b2414d0
CY		 2166}
2167
af033b2a 2168int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 2169{
af033b2a 2170 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 2171 struct quota_info *dqopt = sb_dqopt(sb);
2172 int cnt;
2173 int ret;
2174
db6ec53b
JK		 2175 /*
2176 * do_quotactl
2177 * f2fs_quota_sync
2178 * down_read(quota_sem)
2179 * dquot_writeback_dquots()
2180 * f2fs_dquot_commit
2181 * block_operation
2182 * down_read(quota_sem)
2183 */
2184 f2fs_lock_op(sbi);
2185
2186 down_read(&sbi->quota_sem);
0abd675e
CY		 2187 ret = dquot_writeback_dquots(sb, type);
2188 if (ret)
af033b2a 2189 goto out;
0abd675e
CY		 2190
2191 /*
2192 * Now when everything is written we can discard the pagecache so
2193 * that userspace sees the changes.
2194 */
2195 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 2196 struct address_space *mapping;
2197
0abd675e
CY		 2198 if (type != -1 && cnt != type)
2199 continue;
2200 if (!sb_has_quota_active(sb, cnt))
2201 continue;
2202
af033b2a
CY		 2203 mapping = dqopt->files[cnt]->i_mapping;
2204
2205 ret = filemap_fdatawrite(mapping);
0abd675e 2206 if (ret)
af033b2a
CY		 2207 goto out;
2208
2209 /* if we are using journalled quota */
2210 if (is_journalled_quota(sbi))
2211 continue;
2212
2213 ret = filemap_fdatawait(mapping);
2214 if (ret)
2215 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 2216
2217 inode_lock(dqopt->files[cnt]);
2218 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
2219 inode_unlock(dqopt->files[cnt]);
2220 }
af033b2a
CY		 2221out:
2222 if (ret)
2223 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
db6ec53b
JK		 2224 up_read(&sbi->quota_sem);
2225 f2fs_unlock_op(sbi);
af033b2a 2226 return ret;
0abd675e
CY		 2227}
2228
2229static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2230 const struct path *path)
2231{
2232 struct inode *inode;
2233 int err;
2234
fe973b06
CY		 2235 /* if quota sysfile exists, deny enabling quota with specific file */
2236 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2237 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2238 return -EBUSY;
2239 }
2240
9a20d391 2241 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 2242 if (err)
2243 return err;
2244
2245 err = dquot_quota_on(sb, type, format_id, path);
2246 if (err)
2247 return err;
2248
2249 inode = d_inode(path->dentry);
2250
2251 inode_lock(inode);
59c84408 2252 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 2253 f2fs_set_inode_flags(inode);
0abd675e
CY		 2254 inode_unlock(inode);
2255 f2fs_mark_inode_dirty_sync(inode, false);
2256
2257 return 0;
2258}
2259
fe973b06 2260static int __f2fs_quota_off(struct super_block *sb, int type)
0abd675e
CY		 2261{
2262 struct inode *inode = sb_dqopt(sb)->files[type];
2263 int err;
2264
2265 if (!inode || !igrab(inode))
2266 return dquot_quota_off(sb, type);
2267
cda9cc59
YH		 2268 err = f2fs_quota_sync(sb, type);
2269 if (err)
2270 goto out_put;
0abd675e
CY		 2271
2272 err = dquot_quota_off(sb, type);
7beb01f7 2273 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2274 goto out_put;
2275
2276 inode_lock(inode);
59c84408 2277 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2278 f2fs_set_inode_flags(inode);
0abd675e
CY		 2279 inode_unlock(inode);
2280 f2fs_mark_inode_dirty_sync(inode, false);
2281out_put:
2282 iput(inode);
2283 return err;
2284}
2285
fe973b06
CY		 2286static int f2fs_quota_off(struct super_block *sb, int type)
2287{
2288 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2289 int err;
2290
2291 err = __f2fs_quota_off(sb, type);
2292
2293 /*
2294 * quotactl can shutdown journalled quota, result in inconsistence
2295 * between quota record and fs data by following updates, tag the
2296 * flag to let fsck be aware of it.
2297 */
2298 if (is_journalled_quota(sbi))
2299 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2300 return err;
2301}
2302
4b2414d0 2303void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2304{
2305 int type;
cda9cc59
YH		 2306 int err;
2307
2308 for (type = 0; type < MAXQUOTAS; type++) {
fe973b06 2309 err = __f2fs_quota_off(sb, type);
cda9cc59
YH		 2310 if (err) {
2311 int ret = dquot_quota_off(sb, type);
0abd675e 2312
dcbb4c10
JP		 2313 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2314 type, err, ret);
af033b2a 2315 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2316 }
2317 }
0e0667b6
JK		 2318 /*
2319 * In case of checkpoint=disable, we must flush quota blocks.
2320 * This can cause NULL exception for node_inode in end_io, since
2321 * put_super already dropped it.
2322 */
2323 sync_filesystem(sb);
0abd675e
CY		 2324}
2325
26b5a079
SY		 2326static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2327{
2328 struct quota_info *dqopt = sb_dqopt(sb);
2329 int type;
2330
2331 for (type = 0; type < MAXQUOTAS; type++) {
2332 if (!dqopt->files[type])
2333 continue;
2334 f2fs_inode_synced(dqopt->files[type]);
2335 }
2336}
2337
af033b2a
CY		 2338static int f2fs_dquot_commit(struct dquot *dquot)
2339{
db6ec53b 2340 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2341 int ret;
2342
2c4e0c52 2343 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
af033b2a
CY		 2344 ret = dquot_commit(dquot);
2345 if (ret < 0)
db6ec53b
JK		 2346 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2347 up_read(&sbi->quota_sem);
af033b2a
CY		 2348 return ret;
2349}
2350
2351static int f2fs_dquot_acquire(struct dquot *dquot)
2352{
db6ec53b 2353 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2354 int ret;
2355
db6ec53b 2356 down_read(&sbi->quota_sem);
af033b2a
CY		 2357 ret = dquot_acquire(dquot);
2358 if (ret < 0)
db6ec53b
JK		 2359 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2360 up_read(&sbi->quota_sem);
af033b2a
CY		 2361 return ret;
2362}
2363
2364static int f2fs_dquot_release(struct dquot *dquot)
2365{
db6ec53b 2366 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2c4e0c52 2367 int ret = dquot_release(dquot);
af033b2a 2368
af033b2a 2369 if (ret < 0)
db6ec53b 2370 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2371 return ret;
2372}
2373
2374static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2375{
2376 struct super_block *sb = dquot->dq_sb;
2377 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2378 int ret = dquot_mark_dquot_dirty(dquot);
af033b2a
CY		 2379
2380 /* if we are using journalled quota */
2381 if (is_journalled_quota(sbi))
2382 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2383
2384 return ret;
2385}
2386
2387static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2388{
db6ec53b 2389 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2390 int ret = dquot_commit_info(sb, type);
af033b2a 2391
af033b2a 2392 if (ret < 0)
db6ec53b 2393 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2394 return ret;
2395}
26b5a079 2396
94b1e10e 2397static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2398{
2399 *projid = F2FS_I(inode)->i_projid;
2400 return 0;
2401}
2402
0abd675e
CY		 2403static const struct dquot_operations f2fs_quota_operations = {
2404 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2405 .write_dquot = f2fs_dquot_commit,
2406 .acquire_dquot = f2fs_dquot_acquire,
2407 .release_dquot = f2fs_dquot_release,
2408 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2409 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2410 .alloc_dquot = dquot_alloc,
2411 .destroy_dquot = dquot_destroy,
5c57132e 2412 .get_projid = f2fs_get_projid,
0abd675e
CY		 2413 .get_next_id = dquot_get_next_id,
2414};
2415
2416static const struct quotactl_ops f2fs_quotactl_ops = {
2417 .quota_on = f2fs_quota_on,
2418 .quota_off = f2fs_quota_off,
2419 .quota_sync = f2fs_quota_sync,
2420 .get_state = dquot_get_state,
2421 .set_info = dquot_set_dqinfo,
2422 .get_dqblk = dquot_get_dqblk,
2423 .set_dqblk = dquot_set_dqblk,
2424 .get_nextdqblk = dquot_get_next_dqblk,
2425};
2426#else
af033b2a
CY		 2427int f2fs_quota_sync(struct super_block *sb, int type)
2428{
2429 return 0;
2430}
2431
4b2414d0 2432void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2433{
2434}
2435#endif
2436
f62fc9f9 2437static const struct super_operations f2fs_sops = {
aff063e2 2438 .alloc_inode = f2fs_alloc_inode,
d01718a0 2439 .free_inode = f2fs_free_inode,
531ad7d5 2440 .drop_inode = f2fs_drop_inode,
aff063e2 2441 .write_inode = f2fs_write_inode,
b3783873 2442 .dirty_inode = f2fs_dirty_inode,
aff063e2 2443 .show_options = f2fs_show_options,
0abd675e
CY		 2444#ifdef CONFIG_QUOTA
2445 .quota_read = f2fs_quota_read,
2446 .quota_write = f2fs_quota_write,
2447 .get_dquots = f2fs_get_dquots,
2448#endif
aff063e2
JK		 2449 .evict_inode = f2fs_evict_inode,
2450 .put_super = f2fs_put_super,
2451 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2452 .freeze_fs = f2fs_freeze,
2453 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2454 .statfs = f2fs_statfs,
696c018c 2455 .remount_fs = f2fs_remount,
aff063e2
JK		 2456};
2457
643fa961 2458#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 2459static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2460{
2461 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2462 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2463 ctx, len, NULL);
2464}
2465
2466static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2467 void *fs_data)
2468{
b7c409de
SY		 2469 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2470
2471 /*
2472 * Encrypting the root directory is not allowed because fsck
2473 * expects lost+found directory to exist and remain unencrypted
2474 * if LOST_FOUND feature is enabled.
2475 *
2476 */
7beb01f7 2477 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2478 inode->i_ino == F2FS_ROOT_INO(sbi))
2479 return -EPERM;
2480
0b81d077
JK		 2481 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2482 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2483 ctx, len, fs_data, XATTR_CREATE);
2484}
2485
ed318a6c
EB		 2486static const union fscrypt_context *
2487f2fs_get_dummy_context(struct super_block *sb)
ff62af20 2488{
ed318a6c 2489 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_ctx.ctx;
ff62af20
SY		 2490}
2491
0eee17e3
EB		 2492static bool f2fs_has_stable_inodes(struct super_block *sb)
2493{
2494 return true;
2495}
2496
2497static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
2498 int *ino_bits_ret, int *lblk_bits_ret)
2499{
2500 *ino_bits_ret = 8 * sizeof(nid_t);
2501 *lblk_bits_ret = 8 * sizeof(block_t);
2502}
2503
27aacd28
ST		 2504static int f2fs_get_num_devices(struct super_block *sb)
2505{
2506 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2507
2508 if (f2fs_is_multi_device(sbi))
2509 return sbi->s_ndevs;
2510 return 1;
2511}
2512
2513static void f2fs_get_devices(struct super_block *sb,
2514 struct request_queue **devs)
2515{
2516 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2517 int i;
2518
2519 for (i = 0; i < sbi->s_ndevs; i++)
2520 devs[i] = bdev_get_queue(FDEV(i).bdev);
2521}
2522
6f69f0ed 2523static const struct fscrypt_operations f2fs_cryptops = {
0eee17e3
EB		 2524 .key_prefix = "f2fs:",
2525 .get_context = f2fs_get_context,
2526 .set_context = f2fs_set_context,
ed318a6c 2527 .get_dummy_context = f2fs_get_dummy_context,
0eee17e3
EB		 2528 .empty_dir = f2fs_empty_dir,
2529 .max_namelen = F2FS_NAME_LEN,
2530 .has_stable_inodes = f2fs_has_stable_inodes,
2531 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
27aacd28
ST		 2532 .get_num_devices = f2fs_get_num_devices,
2533 .get_devices = f2fs_get_devices,
0b81d077 2534};
0b81d077
JK		 2535#endif
2536
aff063e2
JK		 2537static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2538 u64 ino, u32 generation)
2539{
2540 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2541 struct inode *inode;
2542
4d57b86d 2543 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2544 return ERR_PTR(-ESTALE);
aff063e2
JK		 2545
2546 /*
2547 * f2fs_iget isn't quite right if the inode is currently unallocated!
2548 * However f2fs_iget currently does appropriate checks to handle stale
2549 * inodes so everything is OK.
2550 */
2551 inode = f2fs_iget(sb, ino);
2552 if (IS_ERR(inode))
2553 return ERR_CAST(inode);
6bacf52f 2554 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2555 /* we didn't find the right inode.. */
2556 iput(inode);
2557 return ERR_PTR(-ESTALE);
2558 }
2559 return inode;
2560}
2561
2562static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2563 int fh_len, int fh_type)
2564{
2565 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2566 f2fs_nfs_get_inode);
2567}
2568
2569static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2570 int fh_len, int fh_type)
2571{
2572 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2573 f2fs_nfs_get_inode);
2574}
2575
2576static const struct export_operations f2fs_export_ops = {
2577 .fh_to_dentry = f2fs_fh_to_dentry,
2578 .fh_to_parent = f2fs_fh_to_parent,
2579 .get_parent = f2fs_get_parent,
2580};
2581
e0afc4d6 2582static loff_t max_file_blocks(void)
aff063e2 2583{
7a2af766 2584 loff_t result = 0;
d02a6e61 2585 loff_t leaf_count = DEF_ADDRS_PER_BLOCK;
aff063e2 2586
7a2af766
CY		 2587 /*
2588 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2589 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2590 * space in inode.i_addr, it will be more safe to reassign
2591 * result as zero.
2592 */
2593
aff063e2
JK		 2594 /* two direct node blocks */
2595 result += (leaf_count * 2);
2596
2597 /* two indirect node blocks */
2598 leaf_count *= NIDS_PER_BLOCK;
2599 result += (leaf_count * 2);
2600
2601 /* one double indirect node block */
2602 leaf_count *= NIDS_PER_BLOCK;
2603 result += leaf_count;
2604
aff063e2
JK		 2605 return result;
2606}
2607
fd694733
JK		 2608static int __f2fs_commit_super(struct buffer_head *bh,
2609 struct f2fs_super_block *super)
2610{
2611 lock_buffer(bh);
2612 if (super)
2613 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2614 set_buffer_dirty(bh);
2615 unlock_buffer(bh);
2616
2617 /* it's rare case, we can do fua all the time */
3adc5fcb 2618 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2619}
2620
df728b0f 2621static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2622 struct buffer_head *bh)
9a59b62f 2623{
fd694733
JK		 2624 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2625 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2626 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2627 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2628 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2629 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2630 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2631 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2632 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2633 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2634 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2635 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2636 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2637 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2638 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2639 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2640 u64 main_end_blkaddr = main_blkaddr +
2641 (segment_count_main << log_blocks_per_seg);
2642 u64 seg_end_blkaddr = segment0_blkaddr +
2643 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2644
2645 if (segment0_blkaddr != cp_blkaddr) {
dcbb4c10
JP		 2646 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2647 segment0_blkaddr, cp_blkaddr);
9a59b62f
CY		 2648 return true;
2649 }
2650
2651 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2652 sit_blkaddr) {
dcbb4c10
JP		 2653 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2654 cp_blkaddr, sit_blkaddr,
2655 segment_count_ckpt << log_blocks_per_seg);
9a59b62f
CY		 2656 return true;
2657 }
2658
2659 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2660 nat_blkaddr) {
dcbb4c10
JP		 2661 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2662 sit_blkaddr, nat_blkaddr,
2663 segment_count_sit << log_blocks_per_seg);
9a59b62f
CY		 2664 return true;
2665 }
2666
2667 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2668 ssa_blkaddr) {
dcbb4c10
JP		 2669 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2670 nat_blkaddr, ssa_blkaddr,
2671 segment_count_nat << log_blocks_per_seg);
9a59b62f
CY		 2672 return true;
2673 }
2674
2675 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2676 main_blkaddr) {
dcbb4c10
JP		 2677 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2678 ssa_blkaddr, main_blkaddr,
2679 segment_count_ssa << log_blocks_per_seg);
9a59b62f
CY		 2680 return true;
2681 }
2682
fd694733 2683 if (main_end_blkaddr > seg_end_blkaddr) {
dcbb4c10
JP		 2684 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2685 main_blkaddr,
2686 segment0_blkaddr +
2687 (segment_count << log_blocks_per_seg),
2688 segment_count_main << log_blocks_per_seg);
9a59b62f 2689 return true;
fd694733
JK		 2690 } else if (main_end_blkaddr < seg_end_blkaddr) {
2691 int err = 0;
2692 char *res;
2693
2694 /* fix in-memory information all the time */
2695 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2696 segment0_blkaddr) >> log_blocks_per_seg);
2697
2698 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2699 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2700 res = "internally";
2701 } else {
2702 err = __f2fs_commit_super(bh, NULL);
2703 res = err ? "failed" : "done";
2704 }
dcbb4c10
JP		 2705 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2706 res, main_blkaddr,
2707 segment0_blkaddr +
2708 (segment_count << log_blocks_per_seg),
2709 segment_count_main << log_blocks_per_seg);
fd694733
JK		 2710 if (err)
2711 return true;
9a59b62f 2712 }
9a59b62f
CY		 2713 return false;
2714}
2715
df728b0f 2716static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2717 struct buffer_head *bh)
aff063e2 2718{
0cfe75c5
JK		 2719 block_t segment_count, segs_per_sec, secs_per_zone;
2720 block_t total_sections, blocks_per_seg;
fd694733
JK		 2721 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2722 (bh->b_data + F2FS_SUPER_OFFSET);
aff063e2 2723 unsigned int blocksize;
d440c52d
JZ		 2724 size_t crc_offset = 0;
2725 __u32 crc = 0;
2726
38fb6d0e
IZ		 2727 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2728 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2729 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2730 return -EINVAL;
2731 }
2732
d440c52d 2733 /* Check checksum_offset and crc in superblock */
7beb01f7 2734 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2735 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2736 if (crc_offset !=
2737 offsetof(struct f2fs_super_block, crc)) {
dcbb4c10
JP		 2738 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2739 crc_offset);
38fb6d0e 2740 return -EFSCORRUPTED;
d440c52d
JZ		 2741 }
2742 crc = le32_to_cpu(raw_super->crc);
2743 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
dcbb4c10 2744 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
38fb6d0e 2745 return -EFSCORRUPTED;
d440c52d
JZ		 2746 }
2747 }
aff063e2 2748
5c9b4692 2749 /* Currently, support only 4KB page cache size */
09cbfeaf 2750 if (F2FS_BLKSIZE != PAGE_SIZE) {
dcbb4c10
JP		 2751 f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
2752 PAGE_SIZE);
38fb6d0e 2753 return -EFSCORRUPTED;
5c9b4692 2754 }
2755
aff063e2
JK		 2756 /* Currently, support only 4KB block size */
2757 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2758 if (blocksize != F2FS_BLKSIZE) {
dcbb4c10
JP		 2759 f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
2760 blocksize);
38fb6d0e 2761 return -EFSCORRUPTED;
a07ef784 2762 }
5c9b4692 2763
9a59b62f
CY		 2764 /* check log blocks per segment */
2765 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
dcbb4c10
JP		 2766 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2767 le32_to_cpu(raw_super->log_blocks_per_seg));
38fb6d0e 2768 return -EFSCORRUPTED;
9a59b62f
CY		 2769 }
2770
55cf9cb6
CY		 2771 /* Currently, support 512/1024/2048/4096 bytes sector size */
2772 if (le32_to_cpu(raw_super->log_sectorsize) >
2773 F2FS_MAX_LOG_SECTOR_SIZE ||
2774 le32_to_cpu(raw_super->log_sectorsize) <
2775 F2FS_MIN_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2776 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2777 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2778 return -EFSCORRUPTED;
a07ef784 2779 }
55cf9cb6
CY		 2780 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2781 le32_to_cpu(raw_super->log_sectorsize) !=
2782 F2FS_MAX_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2783 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
2784 le32_to_cpu(raw_super->log_sectors_per_block),
2785 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2786 return -EFSCORRUPTED;
a07ef784 2787 }
9a59b62f 2788
0cfe75c5
JK		 2789 segment_count = le32_to_cpu(raw_super->segment_count);
2790 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2791 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2792 total_sections = le32_to_cpu(raw_super->section_count);
2793
2794 /* blocks_per_seg should be 512, given the above check */
2795 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2796
2797 if (segment_count > F2FS_MAX_SEGMENT ||
2798 segment_count < F2FS_MIN_SEGMENTS) {
dcbb4c10 2799 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
38fb6d0e 2800 return -EFSCORRUPTED;
0cfe75c5
JK		 2801 }
2802
2803 if (total_sections > segment_count ||
2804 total_sections < F2FS_MIN_SEGMENTS ||
2805 segs_per_sec > segment_count || !segs_per_sec) {
dcbb4c10
JP		 2806 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
2807 segment_count, total_sections, segs_per_sec);
38fb6d0e 2808 return -EFSCORRUPTED;
0cfe75c5
JK		 2809 }
2810
2811 if ((segment_count / segs_per_sec) < total_sections) {
dcbb4c10
JP		 2812 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
2813 segment_count, segs_per_sec, total_sections);
38fb6d0e 2814 return -EFSCORRUPTED;
0cfe75c5
JK		 2815 }
2816
88960068 2817 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
dcbb4c10
JP		 2818 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
2819 segment_count, le64_to_cpu(raw_super->block_count));
38fb6d0e 2820 return -EFSCORRUPTED;
0cfe75c5
JK		 2821 }
2822
9f701f6c
QS		 2823 if (RDEV(0).path[0]) {
2824 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
2825 int i = 1;
2826
2827 while (i < MAX_DEVICES && RDEV(i).path[0]) {
2828 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
2829 i++;
2830 }
2831 if (segment_count != dev_seg_count) {
2832 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
2833 segment_count, dev_seg_count);
2834 return -EFSCORRUPTED;
2835 }
2836 }
2837
42bf546c 2838 if (secs_per_zone > total_sections || !secs_per_zone) {
dcbb4c10
JP		 2839 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
2840 secs_per_zone, total_sections);
38fb6d0e 2841 return -EFSCORRUPTED;
0cfe75c5
JK		 2842 }
2843 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2844 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2845 (le32_to_cpu(raw_super->extension_count) +
2846 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
dcbb4c10
JP		 2847 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
2848 le32_to_cpu(raw_super->extension_count),
2849 raw_super->hot_ext_count,
2850 F2FS_MAX_EXTENSION);
38fb6d0e 2851 return -EFSCORRUPTED;
0cfe75c5
JK		 2852 }
2853
2854 if (le32_to_cpu(raw_super->cp_payload) >
2855 (blocks_per_seg - F2FS_CP_PACKS)) {
dcbb4c10
JP		 2856 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
2857 le32_to_cpu(raw_super->cp_payload),
2858 blocks_per_seg - F2FS_CP_PACKS);
38fb6d0e 2859 return -EFSCORRUPTED;
0cfe75c5
JK		 2860 }
2861
9a59b62f
CY		 2862 /* check reserved ino info */
2863 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2864 le32_to_cpu(raw_super->meta_ino) != 2 ||
2865 le32_to_cpu(raw_super->root_ino) != 3) {
dcbb4c10
JP		 2866 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2867 le32_to_cpu(raw_super->node_ino),
2868 le32_to_cpu(raw_super->meta_ino),
2869 le32_to_cpu(raw_super->root_ino));
38fb6d0e 2870 return -EFSCORRUPTED;
9a59b62f
CY		 2871 }
2872
2873 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2874 if (sanity_check_area_boundary(sbi, bh))
38fb6d0e 2875 return -EFSCORRUPTED;
9a59b62f 2876
aff063e2
JK		 2877 return 0;
2878}
2879
4d57b86d 2880int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2881{
2882 unsigned int total, fsmeta;
577e3495
JK		 2883 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2884 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2885 unsigned int ovp_segments, reserved_segments;
15d3042a 2886 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2887 unsigned int sit_segs, nat_segs;
2888 unsigned int sit_bitmap_size, nat_bitmap_size;
2889 unsigned int log_blocks_per_seg;
9dc956b2 2890 unsigned int segment_count_main;
e494c2f9 2891 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 2892 block_t user_block_count, valid_user_blocks;
2893 block_t avail_node_count, valid_node_count;
042be0f8 2894 int i, j;
aff063e2
JK		 2895
2896 total = le32_to_cpu(raw_super->segment_count);
2897 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2898 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2899 fsmeta += sit_segs;
2900 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2901 fsmeta += nat_segs;
aff063e2
JK		 2902 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2903 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2904
6bacf52f 2905 if (unlikely(fsmeta >= total))
aff063e2 2906 return 1;
577e3495 2907
2040fce8
JK		 2908 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2909 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2910
2911 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2912 ovp_segments == 0 || reserved_segments == 0)) {
dcbb4c10 2913 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2040fce8
JK		 2914 return 1;
2915 }
2916
9dc956b2
CY		 2917 user_block_count = le64_to_cpu(ckpt->user_block_count);
2918 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2919 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2920 if (!user_block_count || user_block_count >=
2921 segment_count_main << log_blocks_per_seg) {
dcbb4c10
JP		 2922 f2fs_err(sbi, "Wrong user_block_count: %u",
2923 user_block_count);
9dc956b2
CY		 2924 return 1;
2925 }
2926
7b63f72f
CY		 2927 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2928 if (valid_user_blocks > user_block_count) {
dcbb4c10
JP		 2929 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
2930 valid_user_blocks, user_block_count);
7b63f72f
CY		 2931 return 1;
2932 }
2933
2934 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
27cae0bc 2935 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
7b63f72f 2936 if (valid_node_count > avail_node_count) {
dcbb4c10
JP		 2937 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
2938 valid_node_count, avail_node_count);
7b63f72f
CY		 2939 return 1;
2940 }
2941
15d3042a
JQ		 2942 main_segs = le32_to_cpu(raw_super->segment_count_main);
2943 blocks_per_seg = sbi->blocks_per_seg;
2944
2945 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2946 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2947 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2948 return 1;
042be0f8
CY		 2949 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2950 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2951 le32_to_cpu(ckpt->cur_node_segno[j])) {
dcbb4c10
JP		 2952 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
2953 i, j,
2954 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2955 return 1;
2956 }
2957 }
15d3042a
JQ		 2958 }
2959 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2960 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2961 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2962 return 1;
042be0f8
CY		 2963 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2964 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2965 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2966 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
2967 i, j,
2968 le32_to_cpu(ckpt->cur_data_segno[i]));
042be0f8
CY		 2969 return 1;
2970 }
2971 }
2972 }
2973 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1166c1f2 2974 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
042be0f8
CY		 2975 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2976 le32_to_cpu(ckpt->cur_data_segno[j])) {
1166c1f2 2977 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
dcbb4c10
JP		 2978 i, j,
2979 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2980 return 1;
2981 }
2982 }
15d3042a
JQ		 2983 }
2984
c77ec61c
CY		 2985 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2986 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2987
2988 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2989 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
dcbb4c10
JP		 2990 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
2991 sit_bitmap_size, nat_bitmap_size);
c77ec61c
CY		 2992 return 1;
2993 }
e494c2f9
CY		 2994
2995 cp_pack_start_sum = __start_sum_addr(sbi);
2996 cp_payload = __cp_payload(sbi);
2997 if (cp_pack_start_sum < cp_payload + 1 ||
2998 cp_pack_start_sum > blocks_per_seg - 1 -
2999 NR_CURSEG_TYPE) {
dcbb4c10
JP		 3000 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
3001 cp_pack_start_sum);
e494c2f9
CY		 3002 return 1;
3003 }
c77ec61c 3004
5dae2d39
CY		 3005 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
3006 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2d008835
CY		 3007 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
3008 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
3009 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
dcbb4c10 3010 le32_to_cpu(ckpt->checksum_offset));
5dae2d39
CY		 3011 return 1;
3012 }
3013
1e968fdf 3014 if (unlikely(f2fs_cp_error(sbi))) {
dcbb4c10 3015 f2fs_err(sbi, "A bug case: need to run fsck");
577e3495
JK		 3016 return 1;
3017 }
aff063e2
JK		 3018 return 0;
3019}
3020
3021static void init_sb_info(struct f2fs_sb_info *sbi)
3022{
3023 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 3024 int i;
aff063e2
JK		 3025
3026 sbi->log_sectors_per_block =
3027 le32_to_cpu(raw_super->log_sectors_per_block);
3028 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
3029 sbi->blocksize = 1 << sbi->log_blocksize;
3030 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
3031 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
3032 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
3033 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
3034 sbi->total_sections = le32_to_cpu(raw_super->section_count);
3035 sbi->total_node_count =
3036 (le32_to_cpu(raw_super->segment_count_nat) / 2)
3037 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
3038 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
3039 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
3040 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 3041 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 3042 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
3043 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 3044 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 3045 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 3046
ab9fa662 3047 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 3048 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 3049 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 3050 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
3051 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 3052 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 3053 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
3054 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 3055 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 3056
35782b23
JK		 3057 for (i = 0; i < NR_COUNT_TYPE; i++)
3058 atomic_set(&sbi->nr_pages[i], 0);
3059
c29fd0c0
CY		 3060 for (i = 0; i < META; i++)
3061 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 3062
2658e50d
JK		 3063 INIT_LIST_HEAD(&sbi->s_list);
3064 mutex_init(&sbi->umount_mutex);
107a805d 3065 init_rwsem(&sbi->io_order_lock);
aaec2b1d 3066 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 3067
3068 sbi->dirty_device = 0;
3069 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 3070
846ae671 3071 init_rwsem(&sbi->sb_lock);
f5a53edc 3072 init_rwsem(&sbi->pin_sem);
aff063e2
JK		 3073}
3074
523be8a6
JK		 3075static int init_percpu_info(struct f2fs_sb_info *sbi)
3076{
35782b23 3077 int err;
41382ec4 3078
513c5f37
JK		 3079 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
3080 if (err)
3081 return err;
3082
4a70e255 3083 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 3084 GFP_KERNEL);
4a70e255
CY		 3085 if (err)
3086 percpu_counter_destroy(&sbi->alloc_valid_block_count);
3087
3088 return err;
523be8a6
JK		 3089}
3090
178053e2 3091#ifdef CONFIG_BLK_DEV_ZONED
de881df9
AR		 3092
3093struct f2fs_report_zones_args {
3094 struct f2fs_dev_info *dev;
3095 bool zone_cap_mismatch;
3096};
3097
d4100351 3098static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
de881df9 3099 void *data)
d4100351 3100{
de881df9
AR		 3101 struct f2fs_report_zones_args *rz_args = data;
3102
3103 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
3104 return 0;
3105
3106 set_bit(idx, rz_args->dev->blkz_seq);
3107 rz_args->dev->zone_capacity_blocks[idx] = zone->capacity >>
3108 F2FS_LOG_SECTORS_PER_BLOCK;
3109 if (zone->len != zone->capacity && !rz_args->zone_cap_mismatch)
3110 rz_args->zone_cap_mismatch = true;
d4100351 3111
d4100351
CH		 3112 return 0;
3113}
3114
3c62be17 3115static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 3116{
3c62be17 3117 struct block_device *bdev = FDEV(devi).bdev;
178053e2 3118 sector_t nr_sectors = bdev->bd_part->nr_sects;
de881df9 3119 struct f2fs_report_zones_args rep_zone_arg;
d4100351 3120 int ret;
178053e2 3121
7beb01f7 3122 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 3123 return 0;
3124
3c62be17 3125 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 3126 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 3127 return -EINVAL;
f99e8648 3128 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 3129 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3130 __ilog2_u32(sbi->blocks_per_blkz))
3131 return -EINVAL;
178053e2 3132 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 3133 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3134 sbi->log_blocks_per_blkz;
f99e8648 3135 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 3136 FDEV(devi).nr_blkz++;
178053e2 3137
0b6d4ca0 3138 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi,
95175daf
DLM		 3139 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3140 * sizeof(unsigned long),
3141 GFP_KERNEL);
3142 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 3143 return -ENOMEM;
3144
de881df9
AR		 3145 /* Get block zones type and zone-capacity */
3146 FDEV(devi).zone_capacity_blocks = f2fs_kzalloc(sbi,
3147 FDEV(devi).nr_blkz * sizeof(block_t),
3148 GFP_KERNEL);
3149 if (!FDEV(devi).zone_capacity_blocks)
3150 return -ENOMEM;
3151
3152 rep_zone_arg.dev = &FDEV(devi);
3153 rep_zone_arg.zone_cap_mismatch = false;
3154
d4100351 3155 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
de881df9 3156 &rep_zone_arg);
d4100351
CH		 3157 if (ret < 0)
3158 return ret;
178053e2 3159
de881df9
AR		 3160 if (!rep_zone_arg.zone_cap_mismatch) {
3161 kfree(FDEV(devi).zone_capacity_blocks);
3162 FDEV(devi).zone_capacity_blocks = NULL;
3163 }
3164
d4100351 3165 return 0;
178053e2
DLM		 3166}
3167#endif
3168
9076a75f
GZ		 3169/*
3170 * Read f2fs raw super block.
2b39e907
SL		 3171 * Because we have two copies of super block, so read both of them
3172 * to get the first valid one. If any one of them is broken, we pass
3173 * them recovery flag back to the caller.
9076a75f 3174 */
df728b0f 3175static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 3176 struct f2fs_super_block **raw_super,
e8240f65 3177 int *valid_super_block, int *recovery)
14d7e9de 3178{
df728b0f 3179 struct super_block *sb = sbi->sb;
2b39e907 3180 int block;
e8240f65 3181 struct buffer_head *bh;
fd694733 3182 struct f2fs_super_block *super;
da554e48 3183 int err = 0;
14d7e9de 3184
b39f0de2
YH		 3185 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3186 if (!super)
3187 return -ENOMEM;
2b39e907
SL		 3188
3189 for (block = 0; block < 2; block++) {
3190 bh = sb_bread(sb, block);
3191 if (!bh) {
dcbb4c10
JP		 3192 f2fs_err(sbi, "Unable to read %dth superblock",
3193 block + 1);
2b39e907 3194 err = -EIO;
ed352042 3195 *recovery = 1;
2b39e907
SL		 3196 continue;
3197 }
14d7e9de 3198
2b39e907 3199 /* sanity checking of raw super */
38fb6d0e
IZ		 3200 err = sanity_check_raw_super(sbi, bh);
3201 if (err) {
dcbb4c10
JP		 3202 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3203 block + 1);
2b39e907 3204 brelse(bh);
ed352042 3205 *recovery = 1;
2b39e907
SL		 3206 continue;
3207 }
14d7e9de 3208
2b39e907 3209 if (!*raw_super) {
fd694733
JK		 3210 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3211 sizeof(*super));
2b39e907
SL		 3212 *valid_super_block = block;
3213 *raw_super = super;
3214 }
3215 brelse(bh);
da554e48 3216 }
3217
da554e48 3218 /* No valid superblock */
2b39e907 3219 if (!*raw_super)
742532d1 3220 kfree(super);
2b39e907
SL		 3221 else
3222 err = 0;
da554e48 3223
2b39e907 3224 return err;
14d7e9de 3225}
3226
fd694733 3227int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 3228{
5d909cdb 3229 struct buffer_head *bh;
d440c52d 3230 __u32 crc = 0;
26d815ad
JK		 3231 int err;
3232
df728b0f
JK		 3233 if ((recover && f2fs_readonly(sbi->sb)) ||
3234 bdev_read_only(sbi->sb->s_bdev)) {
3235 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 3236 return -EROFS;
df728b0f 3237 }
f2353d7b 3238
d440c52d 3239 /* we should update superblock crc here */
7beb01f7 3240 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 3241 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3242 offsetof(struct f2fs_super_block, crc));
3243 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3244 }
3245
fd694733 3246 /* write back-up superblock first */
0964fc1a 3247 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 3248 if (!bh)
3249 return -EIO;
fd694733 3250 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 3251 brelse(bh);
c5bda1c8
CY		 3252
3253 /* if we are in recovery path, skip writing valid superblock */
3254 if (recover || err)
5d909cdb 3255 return err;
26d815ad
JK		 3256
3257 /* write current valid superblock */
0964fc1a 3258 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 3259 if (!bh)
3260 return -EIO;
3261 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3262 brelse(bh);
3263 return err;
26d815ad
JK		 3264}
3265
3c62be17
JK		 3266static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3267{
3268 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 3269 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 3270 int i;
3271
7bb3a371
MS		 3272 /* Initialize single device information */
3273 if (!RDEV(0).path[0]) {
3274 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 3275 return 0;
7bb3a371
MS		 3276 max_devices = 1;
3277 }
3c62be17 3278
7bb3a371
MS		 3279 /*
3280 * Initialize multiple devices information, or single
3281 * zoned block device information.
3282 */
026f0507
KC		 3283 sbi->devs = f2fs_kzalloc(sbi,
3284 array_size(max_devices,
3285 sizeof(struct f2fs_dev_info)),
3286 GFP_KERNEL);
7bb3a371
MS		 3287 if (!sbi->devs)
3288 return -ENOMEM;
3c62be17 3289
7bb3a371 3290 for (i = 0; i < max_devices; i++) {
3c62be17 3291
7bb3a371
MS		 3292 if (i > 0 && !RDEV(i).path[0])
3293 break;
3294
3295 if (max_devices == 1) {
3296 /* Single zoned block device mount */
3297 FDEV(0).bdev =
3298 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 3299 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 3300 } else {
3301 /* Multi-device mount */
3302 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3303 FDEV(i).total_segments =
3304 le32_to_cpu(RDEV(i).total_segments);
3305 if (i == 0) {
3306 FDEV(i).start_blk = 0;
3307 FDEV(i).end_blk = FDEV(i).start_blk +
3308 (FDEV(i).total_segments <<
3309 sbi->log_blocks_per_seg) - 1 +
3310 le32_to_cpu(raw_super->segment0_blkaddr);
3311 } else {
3312 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3313 FDEV(i).end_blk = FDEV(i).start_blk +
3314 (FDEV(i).total_segments <<
3315 sbi->log_blocks_per_seg) - 1;
3316 }
3317 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 3318 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 3319 }
3c62be17
JK		 3320 if (IS_ERR(FDEV(i).bdev))
3321 return PTR_ERR(FDEV(i).bdev);
3322
3323 /* to release errored devices */
3324 sbi->s_ndevs = i + 1;
3325
3326#ifdef CONFIG_BLK_DEV_ZONED
3327 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3328 !f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3329 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3c62be17
JK		 3330 return -EINVAL;
3331 }
3332 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3333 if (init_blkz_info(sbi, i)) {
dcbb4c10 3334 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3c62be17
JK		 3335 return -EINVAL;
3336 }
7bb3a371
MS		 3337 if (max_devices == 1)
3338 break;
dcbb4c10
JP		 3339 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3340 i, FDEV(i).path,
3341 FDEV(i).total_segments,
3342 FDEV(i).start_blk, FDEV(i).end_blk,
3343 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3344 "Host-aware" : "Host-managed");
3c62be17
JK		 3345 continue;
3346 }
3347#endif
dcbb4c10
JP		 3348 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3349 i, FDEV(i).path,
3350 FDEV(i).total_segments,
3351 FDEV(i).start_blk, FDEV(i).end_blk);
3352 }
3353 f2fs_info(sbi,
3354 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3355 return 0;
3356}
3357
5aba5430
DR		 3358static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3359{
3360#ifdef CONFIG_UNICODE
3361 if (f2fs_sb_has_casefold(sbi) && !sbi->s_encoding) {
3362 const struct f2fs_sb_encodings *encoding_info;
3363 struct unicode_map *encoding;
3364 __u16 encoding_flags;
3365
3366 if (f2fs_sb_has_encrypt(sbi)) {
3367 f2fs_err(sbi,
3368 "Can't mount with encoding and encryption");
3369 return -EINVAL;
3370 }
3371
3372 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3373 &encoding_flags)) {
3374 f2fs_err(sbi,
3375 "Encoding requested by superblock is unknown");
3376 return -EINVAL;
3377 }
3378
3379 encoding = utf8_load(encoding_info->version);
3380 if (IS_ERR(encoding)) {
3381 f2fs_err(sbi,
3382 "can't mount with superblock charset: %s-%s "
3383 "not supported by the kernel. flags: 0x%x.",
3384 encoding_info->name, encoding_info->version,
3385 encoding_flags);
3386 return PTR_ERR(encoding);
3387 }
3388 f2fs_info(sbi, "Using encoding defined by superblock: "
3389 "%s-%s with flags 0x%hx", encoding_info->name,
3390 encoding_info->version?:"\b", encoding_flags);
3391
3392 sbi->s_encoding = encoding;
3393 sbi->s_encoding_flags = encoding_flags;
2c2eb7a3 3394 sbi->sb->s_d_op = &f2fs_dentry_ops;
5aba5430
DR		 3395 }
3396#else
3397 if (f2fs_sb_has_casefold(sbi)) {
3398 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3399 return -EINVAL;
3400 }
3401#endif
3402 return 0;
3403}
3404
84b89e5d
JK		 3405static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3406{
3407 struct f2fs_sm_info *sm_i = SM_I(sbi);
3408
3409 /* adjust parameters according to the volume size */
3410 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3411 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3412 sm_i->dcc_info->discard_granularity = 1;
3413 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3414 }
4cac90d5
CY		 3415
3416 sbi->readdir_ra = 1;
84b89e5d
JK		 3417}
3418
aff063e2
JK		 3419static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3420{
3421 struct f2fs_sb_info *sbi;
da554e48 3422 struct f2fs_super_block *raw_super;
aff063e2 3423 struct inode *root;
99e3e858 3424 int err;
aa2c8c43 3425 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3426 char *options = NULL;
e8240f65 3427 int recovery, i, valid_super_block;
8f1dbbbb 3428 struct curseg_info *seg_i;
aa2c8c43 3429 int retry_cnt = 1;
aff063e2 3430
ed2e621a 3431try_onemore:
da554e48 3432 err = -EINVAL;
3433 raw_super = NULL;
e8240f65 3434 valid_super_block = -1;
da554e48 3435 recovery = 0;
3436
aff063e2
JK		 3437 /* allocate memory for f2fs-specific super block info */
3438 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3439 if (!sbi)
3440 return -ENOMEM;
3441
df728b0f
JK		 3442 sbi->sb = sb;
3443
43b6573b
KM		 3444 /* Load the checksum driver */
3445 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3446 if (IS_ERR(sbi->s_chksum_driver)) {
dcbb4c10 3447 f2fs_err(sbi, "Cannot load crc32 driver.");
43b6573b
KM		 3448 err = PTR_ERR(sbi->s_chksum_driver);
3449 sbi->s_chksum_driver = NULL;
3450 goto free_sbi;
3451 }
3452
ff9234ad 3453 /* set a block size */
6bacf52f 3454 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
dcbb4c10 3455 f2fs_err(sbi, "unable to set blocksize");
aff063e2 3456 goto free_sbi;
a07ef784 3457 }
aff063e2 3458
df728b0f 3459 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3460 &recovery);
9076a75f
GZ		 3461 if (err)
3462 goto free_sbi;
3463
5fb08372 3464 sb->s_fs_info = sbi;
52763a4b
JK		 3465 sbi->raw_super = raw_super;
3466
704956ec 3467 /* precompute checksum seed for metadata */
7beb01f7 3468 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3469 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3470 sizeof(raw_super->uuid));
3471
d1b959c8
DLM		 3472 /*
3473 * The BLKZONED feature indicates that the drive was formatted with
3474 * zone alignment optimization. This is optional for host-aware
3475 * devices, but mandatory for host-managed zoned block devices.
3476 */
3477#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3478 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3479 f2fs_err(sbi, "Zoned block device support is not enabled");
1727f317 3480 err = -EOPNOTSUPP;
d1b959c8
DLM		 3481 goto free_sb_buf;
3482 }
d1b959c8 3483#endif
498c5e9f 3484 default_options(sbi);
aff063e2 3485 /* parse mount options */
dabc4a5c
JK		 3486 options = kstrdup((const char *)data, GFP_KERNEL);
3487 if (data && !options) {
3488 err = -ENOMEM;
aff063e2 3489 goto free_sb_buf;
dabc4a5c
JK		 3490 }
3491
ed318a6c 3492 err = parse_options(sb, options, false);
dabc4a5c
JK		 3493 if (err)
3494 goto free_options;
aff063e2 3495
e0afc4d6
CY		 3496 sbi->max_file_blocks = max_file_blocks();
3497 sb->s_maxbytes = sbi->max_file_blocks <<
3498 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3499 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3500
5aba5430
DR		 3501 err = f2fs_setup_casefold(sbi);
3502 if (err)
3503 goto free_options;
3504
0abd675e
CY		 3505#ifdef CONFIG_QUOTA
3506 sb->dq_op = &f2fs_quota_operations;
bc88ac96 3507 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3508 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3509
7beb01f7 3510 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3511 for (i = 0; i < MAXQUOTAS; i++) {
3512 if (f2fs_qf_ino(sbi->sb, i))
3513 sbi->nquota_files++;
3514 }
3515 }
0abd675e
CY		 3516#endif
3517
aff063e2 3518 sb->s_op = &f2fs_sops;
643fa961 3519#ifdef CONFIG_FS_ENCRYPTION
0b81d077 3520 sb->s_cop = &f2fs_cryptops;
95ae251f
EB		 3521#endif
3522#ifdef CONFIG_FS_VERITY
3523 sb->s_vop = &f2fs_verityops;
ffcc4182 3524#endif
aff063e2
JK		 3525 sb->s_xattr = f2fs_xattr_handlers;
3526 sb->s_export_op = &f2fs_export_ops;
3527 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3528 sb->s_time_gran = 1;
1751e8a6
LT		 3529 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3530 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3531 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3532 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3533
3534 /* init f2fs-specific super block info */
e8240f65 3535 sbi->valid_super_block = valid_super_block;
fb24fea7 3536 init_rwsem(&sbi->gc_lock);
853137ce 3537 mutex_init(&sbi->writepages);
aff063e2 3538 mutex_init(&sbi->cp_mutex);
b3582c68 3539 init_rwsem(&sbi->node_write);
59c9081b 3540 init_rwsem(&sbi->node_change);
315df839
JK		 3541
3542 /* disallow all the data/node/meta page writes */
3543 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3544 spin_lock_init(&sbi->stat_lock);
971767ca 3545
b0af6d49
CY		 3546 /* init iostat info */
3547 spin_lock_init(&sbi->iostat_lock);
3548 sbi->iostat_enable = false;
2bc4bea3 3549 sbi->iostat_period_ms = DEFAULT_IOSTAT_PERIOD_MS;
b0af6d49 3550
458e6197 3551 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3552 int n = (i == META) ? 1: NR_TEMP_TYPE;
3553 int j;
3554
c8606593
KC		 3555 sbi->write_io[i] =
3556 f2fs_kmalloc(sbi,
3557 array_size(n,
3558 sizeof(struct f2fs_bio_info)),
3559 GFP_KERNEL);
b63def91
CJ		 3560 if (!sbi->write_io[i]) {
3561 err = -ENOMEM;
0b2103e8 3562 goto free_bio_info;
b63def91 3563 }
a912b54d
JK		 3564
3565 for (j = HOT; j < n; j++) {
3566 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3567 sbi->write_io[i][j].sbi = sbi;
3568 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3569 spin_lock_init(&sbi->write_io[i][j].io_lock);
3570 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
0b20fcec
CY		 3571 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
3572 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
a912b54d 3573 }
458e6197 3574 }
971767ca 3575
b873b798 3576 init_rwsem(&sbi->cp_rwsem);
db6ec53b 3577 init_rwsem(&sbi->quota_sem);
fb51b5ef 3578 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3579 init_sb_info(sbi);
3580
523be8a6
JK		 3581 err = init_percpu_info(sbi);
3582 if (err)
d7997e63 3583 goto free_bio_info;
523be8a6 3584
c72db71e 3585 if (F2FS_IO_ALIGNED(sbi)) {
0a595eba 3586 sbi->write_io_dummy =
a3ebfe4f 3587 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3588 if (!sbi->write_io_dummy) {
3589 err = -ENOMEM;
d7997e63 3590 goto free_percpu;
1727f317 3591 }
0a595eba
JK		 3592 }
3593
a999150f
CY		 3594 /* init per sbi slab cache */
3595 err = f2fs_init_xattr_caches(sbi);
3596 if (err)
3597 goto free_io_dummy;
3598
aff063e2
JK		 3599 /* get an inode for meta space */
3600 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3601 if (IS_ERR(sbi->meta_inode)) {
dcbb4c10 3602 f2fs_err(sbi, "Failed to read F2FS meta data inode");
aff063e2 3603 err = PTR_ERR(sbi->meta_inode);
a999150f 3604 goto free_xattr_cache;
aff063e2
JK		 3605 }
3606
4d57b86d 3607 err = f2fs_get_valid_checkpoint(sbi);
a07ef784 3608 if (err) {
dcbb4c10 3609 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
aff063e2 3610 goto free_meta_inode;
a07ef784 3611 }
aff063e2 3612
af033b2a
CY		 3613 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3614 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3615 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3616 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3617 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3618 }
af033b2a 3619
04f0b2ea
QS		 3620 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3621 set_sbi_flag(sbi, SBI_NEED_FSCK);
3622
3c62be17
JK		 3623 /* Initialize device list */
3624 err = f2fs_scan_devices(sbi);
3625 if (err) {
dcbb4c10 3626 f2fs_err(sbi, "Failed to find devices");
3c62be17
JK		 3627 goto free_devices;
3628 }
3629
4c8ff709
CY		 3630 err = f2fs_init_post_read_wq(sbi);
3631 if (err) {
3632 f2fs_err(sbi, "Failed to initialize post read workqueue");
3633 goto free_devices;
3634 }
3635
aff063e2
JK		 3636 sbi->total_valid_node_count =
3637 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3638 percpu_counter_set(&sbi->total_valid_inode_count,
3639 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3640 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3641 sbi->total_valid_block_count =
3642 le64_to_cpu(sbi->ckpt->valid_block_count);
3643 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3644 sbi->reserved_blocks = 0;
80d42145 3645 sbi->current_reserved_blocks = 0;
7e65be49 3646 limit_reserve_root(sbi);
1ae18f71 3647 adjust_unusable_cap_perc(sbi);
41382ec4 3648
c227f912
CY		 3649 for (i = 0; i < NR_INODE_TYPE; i++) {
3650 INIT_LIST_HEAD(&sbi->inode_list[i]);
3651 spin_lock_init(&sbi->inode_lock[i]);
3652 }
040d2bb3 3653 mutex_init(&sbi->flush_lock);
aff063e2 3654
4d57b86d 3655 f2fs_init_extent_cache_info(sbi);
1dcc336b 3656
4d57b86d 3657 f2fs_init_ino_entry_info(sbi);
aff063e2 3658
50fa53ec
CY		 3659 f2fs_init_fsync_node_info(sbi);
3660
aff063e2 3661 /* setup f2fs internal modules */
4d57b86d 3662 err = f2fs_build_segment_manager(sbi);
a07ef784 3663 if (err) {
dcbb4c10
JP		 3664 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3665 err);
aff063e2 3666 goto free_sm;
a07ef784 3667 }
4d57b86d 3668 err = f2fs_build_node_manager(sbi);
a07ef784 3669 if (err) {
dcbb4c10
JP		 3670 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3671 err);
aff063e2 3672 goto free_nm;
a07ef784 3673 }
aff063e2 3674
8f1dbbbb
SL		 3675 /* For write statistics */
3676 if (sb->s_bdev->bd_part)
3677 sbi->sectors_written_start =
dbae2c55
MC		 3678 (u64)part_stat_read(sb->s_bdev->bd_part,
3679 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3680
3681 /* Read accumulated write IO statistics if exists */
3682 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3683 if (__exist_node_summaries(sbi))
3684 sbi->kbytes_written =
b2dde6fc 3685 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3686
4d57b86d 3687 f2fs_build_gc_manager(sbi);
aff063e2 3688
60aa4d55
ST		 3689 err = f2fs_build_stats(sbi);
3690 if (err)
3691 goto free_nm;
3692
aff063e2
JK		 3693 /* get an inode for node space */
3694 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3695 if (IS_ERR(sbi->node_inode)) {
dcbb4c10 3696 f2fs_err(sbi, "Failed to read node inode");
aff063e2 3697 err = PTR_ERR(sbi->node_inode);
60aa4d55 3698 goto free_stats;
aff063e2
JK		 3699 }
3700
aff063e2
JK		 3701 /* read root inode and dentry */
3702 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3703 if (IS_ERR(root)) {
dcbb4c10 3704 f2fs_err(sbi, "Failed to read root inode");
aff063e2 3705 err = PTR_ERR(root);
60aa4d55 3706 goto free_node_inode;
aff063e2 3707 }
bcbfbd60
CY		 3708 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3709 !root->i_size || !root->i_nlink) {
9d847950 3710 iput(root);
8f99a946 3711 err = -EINVAL;
60aa4d55 3712 goto free_node_inode;
8f99a946 3713 }
aff063e2
JK		 3714
3715 sb->s_root = d_make_root(root); /* allocate root dentry */
3716 if (!sb->s_root) {
3717 err = -ENOMEM;
025cdb16 3718 goto free_node_inode;
aff063e2
JK		 3719 }
3720
dc6b2055 3721 err = f2fs_register_sysfs(sbi);
b59d0bae 3722 if (err)
a398101a 3723 goto free_root_inode;
b59d0bae 3724
ea676733 3725#ifdef CONFIG_QUOTA
76cf05d7 3726 /* Enable quota usage during mount */
7beb01f7 3727 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3728 err = f2fs_enable_quotas(sb);
730746ce 3729 if (err)
dcbb4c10 3730 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
ea676733
JK		 3731 }
3732#endif
7a88ddb5 3733 /* if there are any orphan inodes, free them */
4d57b86d 3734 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3735 if (err)
ea676733 3736 goto free_meta;
4b2414d0 3737
4354994f 3738 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3739 goto reset_checkpoint;
4354994f 3740
6437d1b0 3741 /* recover fsynced data */
a9117eca
CY		 3742 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
3743 !test_opt(sbi, NORECOVERY)) {
081d78c2
JK		 3744 /*
3745 * mount should be failed, when device has readonly mode, and
3746 * previous checkpoint was not done by clean system shutdown.
3747 */
b61af314
CY		 3748 if (f2fs_hw_is_readonly(sbi)) {
3749 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3750 err = -EROFS;
dcbb4c10 3751 f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
b61af314
CY		 3752 goto free_meta;
3753 }
dcbb4c10 3754 f2fs_info(sbi, "write access unavailable, skipping recovery");
b61af314 3755 goto reset_checkpoint;
081d78c2 3756 }
2adc3505
CY		 3757
3758 if (need_fsck)
3759 set_sbi_flag(sbi, SBI_NEED_FSCK);
3760
aa2c8c43
CY		 3761 if (skip_recovery)
3762 goto reset_checkpoint;
a468f0ef 3763
4d57b86d 3764 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3765 if (err < 0) {
aa2c8c43
CY		 3766 if (err != -ENOMEM)
3767 skip_recovery = true;
2adc3505 3768 need_fsck = true;
dcbb4c10
JP		 3769 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3770 err);
4b2414d0 3771 goto free_meta;
ed2e621a 3772 }
6781eabb 3773 } else {
4d57b86d 3774 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3775
3776 if (!f2fs_readonly(sb) && err > 0) {
3777 err = -EINVAL;
dcbb4c10 3778 f2fs_err(sbi, "Need to recover fsync data");
ea676733 3779 goto free_meta;
6781eabb 3780 }
6437d1b0 3781 }
d508c94e
SK		 3782
3783 /*
3784 * If the f2fs is not readonly and fsync data recovery succeeds,
3785 * check zoned block devices' write pointer consistency.
3786 */
3787 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
3788 err = f2fs_check_write_pointer(sbi);
3789 if (err)
3790 goto free_meta;
3791 }
3792
aa2c8c43 3793reset_checkpoint:
4d57b86d 3794 /* f2fs_recover_fsync_data() cleared this already */
315df839 3795 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3796
4354994f
DR		 3797 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3798 err = f2fs_disable_checkpoint(sbi);
3799 if (err)
812a9597 3800 goto sync_free_meta;
4354994f
DR		 3801 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3802 f2fs_enable_checkpoint(sbi);
3803 }
3804
6437d1b0
JK		 3805 /*
3806 * If filesystem is not mounted as read-only then
3807 * do start the gc_thread.
3808 */
bbbc34fd 3809 if (F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF && !f2fs_readonly(sb)) {
6437d1b0 3810 /* After POR, we can run background GC thread.*/
4d57b86d 3811 err = f2fs_start_gc_thread(sbi);
6437d1b0 3812 if (err)
812a9597 3813 goto sync_free_meta;
6437d1b0 3814 }
5222595d 3815 kvfree(options);
da554e48 3816
3817 /* recover broken superblock */
f2353d7b 3818 if (recovery) {
41214b3c 3819 err = f2fs_commit_super(sbi, true);
dcbb4c10
JP		 3820 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
3821 sbi->valid_super_block ? 1 : 2, err);
da554e48 3822 }
3823
bae01eda
CY		 3824 f2fs_join_shrinker(sbi);
3825
84b89e5d
JK		 3826 f2fs_tuning_parameters(sbi);
3827
dcbb4c10
JP		 3828 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
3829 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3830 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3831 f2fs_update_time(sbi, REQ_TIME);
db610a64 3832 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3833 return 0;
6437d1b0 3834
812a9597
JK		 3835sync_free_meta:
3836 /* safe to flush all the data */
3837 sync_filesystem(sbi->sb);
aa2c8c43 3838 retry_cnt = 0;
812a9597 3839
4b2414d0 3840free_meta:
ea676733 3841#ifdef CONFIG_QUOTA
26b5a079 3842 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3843 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3844 f2fs_quota_off_umount(sbi->sb);
3845#endif
4b2414d0 3846 /*
4d57b86d 3847 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3848 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3849 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3850 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3851 */
3852 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3853 /* evict some inodes being cached by GC */
3854 evict_inodes(sb);
dc6b2055 3855 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3856free_root_inode:
3857 dput(sb->s_root);
3858 sb->s_root = NULL;
3859free_node_inode:
4d57b86d 3860 f2fs_release_ino_entry(sbi, true);
bae01eda 3861 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3862 iput(sbi->node_inode);
7c77bf7d 3863 sbi->node_inode = NULL;
60aa4d55
ST		 3864free_stats:
3865 f2fs_destroy_stats(sbi);
aff063e2 3866free_nm:
4d57b86d 3867 f2fs_destroy_node_manager(sbi);
aff063e2 3868free_sm:
4d57b86d 3869 f2fs_destroy_segment_manager(sbi);
4c8ff709 3870 f2fs_destroy_post_read_wq(sbi);
3c62be17
JK		 3871free_devices:
3872 destroy_device_list(sbi);
5222595d 3873 kvfree(sbi->ckpt);
aff063e2
JK		 3874free_meta_inode:
3875 make_bad_inode(sbi->meta_inode);
3876 iput(sbi->meta_inode);
7c77bf7d 3877 sbi->meta_inode = NULL;
a999150f
CY		 3878free_xattr_cache:
3879 f2fs_destroy_xattr_caches(sbi);
0a595eba
JK		 3880free_io_dummy:
3881 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3882free_percpu:
3883 destroy_percpu_info(sbi);
3884free_bio_info:
a912b54d 3885 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3886 kvfree(sbi->write_io[i]);
5aba5430
DR		 3887
3888#ifdef CONFIG_UNICODE
3889 utf8_unload(sbi->s_encoding);
3890#endif
d7997e63 3891free_options:
4b2414d0
CY		 3892#ifdef CONFIG_QUOTA
3893 for (i = 0; i < MAXQUOTAS; i++)
ba87a45c 3894 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3895#endif
ed318a6c 3896 fscrypt_free_dummy_context(&F2FS_OPTION(sbi).dummy_enc_ctx);
5222595d 3897 kvfree(options);
aff063e2 3898free_sb_buf:
742532d1 3899 kfree(raw_super);
aff063e2 3900free_sbi:
43b6573b
KM		 3901 if (sbi->s_chksum_driver)
3902 crypto_free_shash(sbi->s_chksum_driver);
742532d1 3903 kfree(sbi);
ed2e621a
JK		 3904
3905 /* give only one another chance */
aa2c8c43
CY		 3906 if (retry_cnt > 0 && skip_recovery) {
3907 retry_cnt--;
ed2e621a
JK		 3908 shrink_dcache_sb(sb);
3909 goto try_onemore;
3910 }
aff063e2
JK		 3911 return err;
3912}
3913
3914static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3915 const char *dev_name, void *data)
3916{
3917 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3918}
3919
30a5537f
JK		 3920static void kill_f2fs_super(struct super_block *sb)
3921{
cce13252 3922 if (sb->s_root) {
1cb50f87
JK		 3923 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3924
3925 set_sbi_flag(sbi, SBI_IS_CLOSE);
3926 f2fs_stop_gc_thread(sbi);
3927 f2fs_stop_discard_thread(sbi);
3928
3929 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3930 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3931 struct cp_control cpc = {
3932 .reason = CP_UMOUNT,
3933 };
3934 f2fs_write_checkpoint(sbi, &cpc);
3935 }
1378752b
CY		 3936
3937 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3938 sb->s_flags &= ~SB_RDONLY;
cce13252 3939 }
30a5537f
JK		 3940 kill_block_super(sb);
3941}
3942
aff063e2
JK		 3943static struct file_system_type f2fs_fs_type = {
3944 .owner = THIS_MODULE,
3945 .name = "f2fs",
3946 .mount = f2fs_mount,
30a5537f 3947 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3948 .fs_flags = FS_REQUIRES_DEV,
3949};
7f78e035 3950MODULE_ALIAS_FS("f2fs");
aff063e2 3951
6e6093a8 3952static int __init init_inodecache(void)
aff063e2 3953{
5d097056
VD		 3954 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3955 sizeof(struct f2fs_inode_info), 0,
3956 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3957 if (!f2fs_inode_cachep)
aff063e2
JK		 3958 return -ENOMEM;
3959 return 0;
3960}
3961
3962static void destroy_inodecache(void)
3963{
3964 /*
3965 * Make sure all delayed rcu free inodes are flushed before we
3966 * destroy cache.
3967 */
3968 rcu_barrier();
3969 kmem_cache_destroy(f2fs_inode_cachep);
3970}
3971
3972static int __init init_f2fs_fs(void)
3973{
3974 int err;
3975
4071e67c
AP		 3976 if (PAGE_SIZE != F2FS_BLKSIZE) {
3977 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3978 PAGE_SIZE, F2FS_BLKSIZE);
3979 return -EINVAL;
3980 }
3981
c0508650
JK		 3982 f2fs_build_trace_ios();
3983
aff063e2
JK		 3984 err = init_inodecache();
3985 if (err)
3986 goto fail;
4d57b86d 3987 err = f2fs_create_node_manager_caches();
aff063e2 3988 if (err)
9890ff3f 3989 goto free_inodecache;
4d57b86d 3990 err = f2fs_create_segment_manager_caches();
aff063e2 3991 if (err)
9890ff3f 3992 goto free_node_manager_caches;
4d57b86d 3993 err = f2fs_create_checkpoint_caches();
aff063e2 3994 if (err)
06292073 3995 goto free_segment_manager_caches;
4d57b86d 3996 err = f2fs_create_extent_cache();
1dcc336b
CY		 3997 if (err)
3998 goto free_checkpoint_caches;
dc6b2055 3999 err = f2fs_init_sysfs();
a398101a 4000 if (err)
1dcc336b 4001 goto free_extent_cache;
2658e50d 4002 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 4003 if (err)
a398101a 4004 goto free_sysfs;
2658e50d
JK		 4005 err = register_filesystem(&f2fs_fs_type);
4006 if (err)
4007 goto free_shrinker;
21acc07d 4008 f2fs_create_root_stats();
6dbb1796
EB		 4009 err = f2fs_init_post_read_processing();
4010 if (err)
4011 goto free_root_stats;
0b20fcec
CY		 4012 err = f2fs_init_bio_entry_cache();
4013 if (err)
4014 goto free_post_read;
f543805f
CY		 4015 err = f2fs_init_bioset();
4016 if (err)
4017 goto free_bio_enrty_cache;
5e6bbde9
CY		 4018 err = f2fs_init_compress_mempool();
4019 if (err)
4020 goto free_bioset;
9890ff3f 4021 return 0;
5e6bbde9
CY		 4022free_bioset:
4023 f2fs_destroy_bioset();
f543805f
CY		 4024free_bio_enrty_cache:
4025 f2fs_destroy_bio_entry_cache();
0b20fcec
CY		 4026free_post_read:
4027 f2fs_destroy_post_read_processing();
6dbb1796
EB		 4028free_root_stats:
4029 f2fs_destroy_root_stats();
787c7b8c 4030 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 4031free_shrinker:
4032 unregister_shrinker(&f2fs_shrinker_info);
a398101a 4033free_sysfs:
dc6b2055 4034 f2fs_exit_sysfs();
1dcc336b 4035free_extent_cache:
4d57b86d 4036 f2fs_destroy_extent_cache();
9890ff3f 4037free_checkpoint_caches:
4d57b86d 4038 f2fs_destroy_checkpoint_caches();
7fd9e544 4039free_segment_manager_caches:
4d57b86d 4040 f2fs_destroy_segment_manager_caches();
9890ff3f 4041free_node_manager_caches:
4d57b86d 4042 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 4043free_inodecache:
4044 destroy_inodecache();
aff063e2
JK		 4045fail:
4046 return err;
4047}
4048
4049static void __exit exit_f2fs_fs(void)
4050{
5e6bbde9 4051 f2fs_destroy_compress_mempool();
f543805f 4052 f2fs_destroy_bioset();
0b20fcec 4053 f2fs_destroy_bio_entry_cache();
6dbb1796 4054 f2fs_destroy_post_read_processing();
4589d25d 4055 f2fs_destroy_root_stats();
aff063e2 4056 unregister_filesystem(&f2fs_fs_type);
b8bef79d 4057 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 4058 f2fs_exit_sysfs();
4d57b86d
CY		 4059 f2fs_destroy_extent_cache();
4060 f2fs_destroy_checkpoint_caches();
4061 f2fs_destroy_segment_manager_caches();
4062 f2fs_destroy_node_manager_caches();
aff063e2 4063 destroy_inodecache();
351f4fba 4064 f2fs_destroy_trace_ios();
aff063e2
JK		 4065}
4066
4067module_init(init_f2fs_fs)
4068module_exit(exit_f2fs_fs)
4069
4070MODULE_AUTHOR("Samsung Electronics's Praesto Team");
4071MODULE_DESCRIPTION("Flash Friendly File System");
4072MODULE_LICENSE("GPL");
b4b9d34c 4073
Ubuntu Hirsute Linux kernel mirror