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f2fs: introduce mempool for {,de}compress intermediate page allocation
[mirror_ubuntu-jammy-kernel.git] / fs / f2fs / super.c
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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,
4d3aed70
DR		 141 Opt_checkpoint_disable,
142 Opt_checkpoint_disable_cap,
143 Opt_checkpoint_disable_cap_perc,
144 Opt_checkpoint_enable,
4c8ff709
CY		 145 Opt_compress_algorithm,
146 Opt_compress_log_size,
147 Opt_compress_extension,
aff063e2
JK		 148 Opt_err,
149};
150
151static match_table_t f2fs_tokens = {
696c018c 152 {Opt_gc_background, "background_gc=%s"},
aff063e2 153 {Opt_disable_roll_forward, "disable_roll_forward"},
2d834bf9 154 {Opt_norecovery, "norecovery"},
aff063e2 155 {Opt_discard, "discard"},
64058be9 156 {Opt_nodiscard, "nodiscard"},
aff063e2 157 {Opt_noheap, "no_heap"},
7a20b8a6 158 {Opt_heap, "heap"},
4058c511 159 {Opt_user_xattr, "user_xattr"},
aff063e2 160 {Opt_nouser_xattr, "nouser_xattr"},
4058c511 161 {Opt_acl, "acl"},
aff063e2
JK		 162 {Opt_noacl, "noacl"},
163 {Opt_active_logs, "active_logs=%u"},
164 {Opt_disable_ext_identify, "disable_ext_identify"},
444c580f 165 {Opt_inline_xattr, "inline_xattr"},
23cf7212 166 {Opt_noinline_xattr, "noinline_xattr"},
6afc662e 167 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
8274de77 168 {Opt_inline_data, "inline_data"},
5efd3c6f 169 {Opt_inline_dentry, "inline_dentry"},
97c1794a 170 {Opt_noinline_dentry, "noinline_dentry"},
6b4afdd7 171 {Opt_flush_merge, "flush_merge"},
69e9e427 172 {Opt_noflush_merge, "noflush_merge"},
0f7b2abd 173 {Opt_nobarrier, "nobarrier"},
d5053a34 174 {Opt_fastboot, "fastboot"},
89672159 175 {Opt_extent_cache, "extent_cache"},
7daaea25 176 {Opt_noextent_cache, "noextent_cache"},
75342797 177 {Opt_noinline_data, "noinline_data"},
343f40f0 178 {Opt_data_flush, "data_flush"},
7e65be49 179 {Opt_reserve_root, "reserve_root=%u"},
7c2e5963
JK		 180 {Opt_resgid, "resgid=%u"},
181 {Opt_resuid, "resuid=%u"},
36abef4e 182 {Opt_mode, "mode=%s"},
ec91538d 183 {Opt_io_size_bits, "io_bits=%u"},
73faec4d 184 {Opt_fault_injection, "fault_injection=%u"},
d494500a 185 {Opt_fault_type, "fault_type=%u"},
6d94c74a
JK		 186 {Opt_lazytime, "lazytime"},
187 {Opt_nolazytime, "nolazytime"},
4b2414d0
CY		 188 {Opt_quota, "quota"},
189 {Opt_noquota, "noquota"},
0abd675e
CY		 190 {Opt_usrquota, "usrquota"},
191 {Opt_grpquota, "grpquota"},
5c57132e 192 {Opt_prjquota, "prjquota"},
4b2414d0
CY		 193 {Opt_usrjquota, "usrjquota=%s"},
194 {Opt_grpjquota, "grpjquota=%s"},
195 {Opt_prjjquota, "prjjquota=%s"},
196 {Opt_offusrjquota, "usrjquota="},
197 {Opt_offgrpjquota, "grpjquota="},
198 {Opt_offprjjquota, "prjjquota="},
199 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
200 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
201 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
0cdd3195 202 {Opt_whint, "whint_mode=%s"},
07939627 203 {Opt_alloc, "alloc_mode=%s"},
93cf93f1 204 {Opt_fsync, "fsync_mode=%s"},
ff62af20 205 {Opt_test_dummy_encryption, "test_dummy_encryption"},
4d3aed70
DR		 206 {Opt_checkpoint_disable, "checkpoint=disable"},
207 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
208 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
209 {Opt_checkpoint_enable, "checkpoint=enable"},
4c8ff709
CY		 210 {Opt_compress_algorithm, "compress_algorithm=%s"},
211 {Opt_compress_log_size, "compress_log_size=%u"},
212 {Opt_compress_extension, "compress_extension=%s"},
aff063e2
JK		 213 {Opt_err, NULL},
214};
215
dcbb4c10 216void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
a07ef784
NJ		 217{
218 struct va_format vaf;
219 va_list args;
dcbb4c10 220 int level;
a07ef784
NJ		 221
222 va_start(args, fmt);
dcbb4c10
JP		 223
224 level = printk_get_level(fmt);
225 vaf.fmt = printk_skip_level(fmt);
a07ef784 226 vaf.va = &args;
dcbb4c10
JP		 227 printk("%c%cF2FS-fs (%s): %pV\n",
228 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
229
a07ef784
NJ		 230 va_end(args);
231}
232
5aba5430
DR		 233#ifdef CONFIG_UNICODE
234static const struct f2fs_sb_encodings {
235 __u16 magic;
236 char *name;
237 char *version;
238} f2fs_sb_encoding_map[] = {
239 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
240};
241
242static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
243 const struct f2fs_sb_encodings **encoding,
244 __u16 *flags)
245{
246 __u16 magic = le16_to_cpu(sb->s_encoding);
247 int i;
248
249 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
250 if (magic == f2fs_sb_encoding_map[i].magic)
251 break;
252
253 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
254 return -EINVAL;
255
256 *encoding = &f2fs_sb_encoding_map[i];
257 *flags = le16_to_cpu(sb->s_encoding_flags);
258
259 return 0;
260}
261#endif
262
7e65be49
JK		 263static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
264{
9a9aecaa
DR		 265 block_t limit = min((sbi->user_block_count << 1) / 1000,
266 sbi->user_block_count - sbi->reserved_blocks);
7e65be49
JK		 267
268 /* limit is 0.2% */
63189b78
CY		 269 if (test_opt(sbi, RESERVE_ROOT) &&
270 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
271 F2FS_OPTION(sbi).root_reserved_blocks = limit;
dcbb4c10
JP		 272 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
273 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 274 }
7c2e5963 275 if (!test_opt(sbi, RESERVE_ROOT) &&
63189b78 276 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
7c2e5963 277 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
63189b78 278 !gid_eq(F2FS_OPTION(sbi).s_resgid,
7c2e5963 279 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
dcbb4c10
JP		 280 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
281 from_kuid_munged(&init_user_ns,
282 F2FS_OPTION(sbi).s_resuid),
283 from_kgid_munged(&init_user_ns,
284 F2FS_OPTION(sbi).s_resgid));
7e65be49
JK		 285}
286
aff063e2
JK		 287static void init_once(void *foo)
288{
289 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
290
aff063e2
JK		 291 inode_init_once(&fi->vfs_inode);
292}
293
4b2414d0
CY		 294#ifdef CONFIG_QUOTA
295static const char * const quotatypes[] = INITQFNAMES;
296#define QTYPE2NAME(t) (quotatypes[t])
297static int f2fs_set_qf_name(struct super_block *sb, int qtype,
298 substring_t *args)
299{
300 struct f2fs_sb_info *sbi = F2FS_SB(sb);
301 char *qname;
302 int ret = -EINVAL;
303
63189b78 304 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 305 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 306 return -EINVAL;
307 }
7beb01f7 308 if (f2fs_sb_has_quota_ino(sbi)) {
dcbb4c10 309 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
ea676733
JK		 310 return 0;
311 }
312
4b2414d0
CY		 313 qname = match_strdup(args);
314 if (!qname) {
dcbb4c10 315 f2fs_err(sbi, "Not enough memory for storing quotafile name");
f365c6cc 316 return -ENOMEM;
4b2414d0 317 }
63189b78
CY		 318 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
319 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
4b2414d0
CY		 320 ret = 0;
321 else
dcbb4c10 322 f2fs_err(sbi, "%s quota file already specified",
4b2414d0
CY		 323 QTYPE2NAME(qtype));
324 goto errout;
325 }
326 if (strchr(qname, '/')) {
dcbb4c10 327 f2fs_err(sbi, "quotafile must be on filesystem root");
4b2414d0
CY		 328 goto errout;
329 }
63189b78 330 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
4b2414d0
CY		 331 set_opt(sbi, QUOTA);
332 return 0;
333errout:
5222595d 334 kvfree(qname);
4b2414d0
CY		 335 return ret;
336}
337
338static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
339{
340 struct f2fs_sb_info *sbi = F2FS_SB(sb);
341
63189b78 342 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 343 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 344 return -EINVAL;
345 }
5222595d 346 kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
63189b78 347 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
4b2414d0
CY		 348 return 0;
349}
350
351static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
352{
353 /*
354 * We do the test below only for project quotas. 'usrquota' and
355 * 'grpquota' mount options are allowed even without quota feature
356 * to support legacy quotas in quota files.
357 */
7beb01f7 358 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
dcbb4c10 359 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
4b2414d0
CY		 360 return -1;
361 }
63189b78
CY		 362 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
363 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
364 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
365 if (test_opt(sbi, USRQUOTA) &&
366 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
4b2414d0
CY		 367 clear_opt(sbi, USRQUOTA);
368
63189b78
CY		 369 if (test_opt(sbi, GRPQUOTA) &&
370 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
4b2414d0
CY		 371 clear_opt(sbi, GRPQUOTA);
372
63189b78
CY		 373 if (test_opt(sbi, PRJQUOTA) &&
374 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4b2414d0
CY		 375 clear_opt(sbi, PRJQUOTA);
376
377 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
378 test_opt(sbi, PRJQUOTA)) {
dcbb4c10 379 f2fs_err(sbi, "old and new quota format mixing");
4b2414d0
CY		 380 return -1;
381 }
382
63189b78 383 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 384 f2fs_err(sbi, "journaled quota format not specified");
4b2414d0
CY		 385 return -1;
386 }
387 }
ea676733 388
7beb01f7 389 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 390 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
63189b78 391 F2FS_OPTION(sbi).s_jquota_fmt = 0;
ea676733 392 }
4b2414d0
CY		 393 return 0;
394}
395#endif
396
696c018c
NJ		 397static int parse_options(struct super_block *sb, char *options)
398{
399 struct f2fs_sb_info *sbi = F2FS_SB(sb);
400 substring_t args[MAX_OPT_ARGS];
4c8ff709 401 unsigned char (*ext)[F2FS_EXTENSION_LEN];
696c018c 402 char *p, *name;
4c8ff709 403 int arg = 0, ext_cnt;
7c2e5963
JK		 404 kuid_t uid;
405 kgid_t gid;
4b2414d0
CY		 406#ifdef CONFIG_QUOTA
407 int ret;
408#endif
696c018c
NJ		 409
410 if (!options)
411 return 0;
412
413 while ((p = strsep(&options, ",")) != NULL) {
414 int token;
415 if (!*p)
416 continue;
417 /*
418 * Initialize args struct so we know whether arg was
419 * found; some options take optional arguments.
420 */
421 args[0].to = args[0].from = NULL;
422 token = match_token(p, f2fs_tokens, args);
423
424 switch (token) {
425 case Opt_gc_background:
426 name = match_strdup(&args[0]);
427
428 if (!name)
429 return -ENOMEM;
3c57f751 430 if (!strcmp(name, "on")) {
bbbc34fd 431 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
3c57f751 432 } else if (!strcmp(name, "off")) {
bbbc34fd 433 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF;
3c57f751 434 } else if (!strcmp(name, "sync")) {
bbbc34fd 435 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC;
6aefd93b 436 } else {
5222595d 437 kvfree(name);
696c018c
NJ		 438 return -EINVAL;
439 }
5222595d 440 kvfree(name);
696c018c
NJ		 441 break;
442 case Opt_disable_roll_forward:
443 set_opt(sbi, DISABLE_ROLL_FORWARD);
444 break;
2d834bf9
JK		 445 case Opt_norecovery:
446 /* this option mounts f2fs with ro */
a9117eca 447 set_opt(sbi, NORECOVERY);
2d834bf9
JK		 448 if (!f2fs_readonly(sb))
449 return -EINVAL;
450 break;
696c018c 451 case Opt_discard:
7d20c8ab 452 set_opt(sbi, DISCARD);
696c018c 453 break;
64058be9 454 case Opt_nodiscard:
7beb01f7 455 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 456 f2fs_warn(sbi, "discard is required for zoned block devices");
96ba2dec
DLM		 457 return -EINVAL;
458 }
64058be9 459 clear_opt(sbi, DISCARD);
487df616 460 break;
696c018c
NJ		 461 case Opt_noheap:
462 set_opt(sbi, NOHEAP);
463 break;
7a20b8a6
JK		 464 case Opt_heap:
465 clear_opt(sbi, NOHEAP);
466 break;
696c018c 467#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 468 case Opt_user_xattr:
469 set_opt(sbi, XATTR_USER);
470 break;
696c018c
NJ		 471 case Opt_nouser_xattr:
472 clear_opt(sbi, XATTR_USER);
473 break;
444c580f
JK		 474 case Opt_inline_xattr:
475 set_opt(sbi, INLINE_XATTR);
476 break;
23cf7212
CY		 477 case Opt_noinline_xattr:
478 clear_opt(sbi, INLINE_XATTR);
479 break;
6afc662e
CY		 480 case Opt_inline_xattr_size:
481 if (args->from && match_int(args, &arg))
482 return -EINVAL;
483 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 484 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 485 break;
696c018c 486#else
4058c511 487 case Opt_user_xattr:
dcbb4c10 488 f2fs_info(sbi, "user_xattr options not supported");
4058c511 489 break;
696c018c 490 case Opt_nouser_xattr:
dcbb4c10 491 f2fs_info(sbi, "nouser_xattr options not supported");
696c018c 492 break;
444c580f 493 case Opt_inline_xattr:
dcbb4c10 494 f2fs_info(sbi, "inline_xattr options not supported");
444c580f 495 break;
23cf7212 496 case Opt_noinline_xattr:
dcbb4c10 497 f2fs_info(sbi, "noinline_xattr options not supported");
23cf7212 498 break;
696c018c
NJ		 499#endif
500#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 501 case Opt_acl:
502 set_opt(sbi, POSIX_ACL);
503 break;
696c018c
NJ		 504 case Opt_noacl:
505 clear_opt(sbi, POSIX_ACL);
506 break;
507#else
4058c511 508 case Opt_acl:
dcbb4c10 509 f2fs_info(sbi, "acl options not supported");
4058c511 510 break;
696c018c 511 case Opt_noacl:
dcbb4c10 512 f2fs_info(sbi, "noacl options not supported");
696c018c
NJ		 513 break;
514#endif
515 case Opt_active_logs:
516 if (args->from && match_int(args, &arg))
517 return -EINVAL;
518 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
519 return -EINVAL;
63189b78 520 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 521 break;
522 case Opt_disable_ext_identify:
523 set_opt(sbi, DISABLE_EXT_IDENTIFY);
524 break;
8274de77
HL		 525 case Opt_inline_data:
526 set_opt(sbi, INLINE_DATA);
527 break;
5efd3c6f
CY		 528 case Opt_inline_dentry:
529 set_opt(sbi, INLINE_DENTRY);
530 break;
97c1794a
CY		 531 case Opt_noinline_dentry:
532 clear_opt(sbi, INLINE_DENTRY);
533 break;
6b4afdd7
JK		 534 case Opt_flush_merge:
535 set_opt(sbi, FLUSH_MERGE);
536 break;
69e9e427
JK		 537 case Opt_noflush_merge:
538 clear_opt(sbi, FLUSH_MERGE);
539 break;
0f7b2abd
JK		 540 case Opt_nobarrier:
541 set_opt(sbi, NOBARRIER);
542 break;
d5053a34
JK		 543 case Opt_fastboot:
544 set_opt(sbi, FASTBOOT);
545 break;
89672159
CY		 546 case Opt_extent_cache:
547 set_opt(sbi, EXTENT_CACHE);
548 break;
7daaea25
JK		 549 case Opt_noextent_cache:
550 clear_opt(sbi, EXTENT_CACHE);
551 break;
75342797
WL		 552 case Opt_noinline_data:
553 clear_opt(sbi, INLINE_DATA);
554 break;
343f40f0
CY		 555 case Opt_data_flush:
556 set_opt(sbi, DATA_FLUSH);
557 break;
7e65be49
JK		 558 case Opt_reserve_root:
559 if (args->from && match_int(args, &arg))
560 return -EINVAL;
561 if (test_opt(sbi, RESERVE_ROOT)) {
dcbb4c10
JP		 562 f2fs_info(sbi, "Preserve previous reserve_root=%u",
563 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 564 } else {
63189b78 565 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 566 set_opt(sbi, RESERVE_ROOT);
567 }
568 break;
7c2e5963
JK		 569 case Opt_resuid:
570 if (args->from && match_int(args, &arg))
571 return -EINVAL;
572 uid = make_kuid(current_user_ns(), arg);
573 if (!uid_valid(uid)) {
dcbb4c10 574 f2fs_err(sbi, "Invalid uid value %d", arg);
7c2e5963
JK		 575 return -EINVAL;
576 }
63189b78 577 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 578 break;
579 case Opt_resgid:
580 if (args->from && match_int(args, &arg))
581 return -EINVAL;
582 gid = make_kgid(current_user_ns(), arg);
583 if (!gid_valid(gid)) {
dcbb4c10 584 f2fs_err(sbi, "Invalid gid value %d", arg);
7c2e5963
JK		 585 return -EINVAL;
586 }
63189b78 587 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 588 break;
36abef4e
JK		 589 case Opt_mode:
590 name = match_strdup(&args[0]);
591
592 if (!name)
593 return -ENOMEM;
3c57f751 594 if (!strcmp(name, "adaptive")) {
7beb01f7 595 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 596 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
5222595d 597 kvfree(name);
3adc57e9
DLM		 598 return -EINVAL;
599 }
b0332a0f 600 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
3c57f751 601 } else if (!strcmp(name, "lfs")) {
b0332a0f 602 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
36abef4e 603 } else {
5222595d 604 kvfree(name);
36abef4e
JK		 605 return -EINVAL;
606 }
5222595d 607 kvfree(name);
36abef4e 608 break;
ec91538d
JK		 609 case Opt_io_size_bits:
610 if (args->from && match_int(args, &arg))
611 return -EINVAL;
6d52e135 612 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
dcbb4c10
JP		 613 f2fs_warn(sbi, "Not support %d, larger than %d",
614 1 << arg, BIO_MAX_PAGES);
ec91538d
JK		 615 return -EINVAL;
616 }
63189b78 617 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 618 break;
4cb037ec 619#ifdef CONFIG_F2FS_FAULT_INJECTION
73faec4d
JK		 620 case Opt_fault_injection:
621 if (args->from && match_int(args, &arg))
622 return -EINVAL;
d494500a
CY		 623 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
624 set_opt(sbi, FAULT_INJECTION);
d494500a 625 break;
4cb037ec 626
d494500a
CY		 627 case Opt_fault_type:
628 if (args->from && match_int(args, &arg))
629 return -EINVAL;
d494500a 630 f2fs_build_fault_attr(sbi, 0, arg);
0cc0dec2 631 set_opt(sbi, FAULT_INJECTION);
4cb037ec 632 break;
73faec4d 633#else
4cb037ec 634 case Opt_fault_injection:
dcbb4c10 635 f2fs_info(sbi, "fault_injection options not supported");
73faec4d 636 break;
4cb037ec
CX		 637
638 case Opt_fault_type:
dcbb4c10 639 f2fs_info(sbi, "fault_type options not supported");
4cb037ec
CX		 640 break;
641#endif
6d94c74a 642 case Opt_lazytime:
1751e8a6 643 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 644 break;
645 case Opt_nolazytime:
1751e8a6 646 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 647 break;
0abd675e 648#ifdef CONFIG_QUOTA
4b2414d0 649 case Opt_quota:
0abd675e
CY		 650 case Opt_usrquota:
651 set_opt(sbi, USRQUOTA);
652 break;
653 case Opt_grpquota:
654 set_opt(sbi, GRPQUOTA);
655 break;
5c57132e
CY		 656 case Opt_prjquota:
657 set_opt(sbi, PRJQUOTA);
658 break;
4b2414d0
CY		 659 case Opt_usrjquota:
660 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
661 if (ret)
662 return ret;
663 break;
664 case Opt_grpjquota:
665 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
666 if (ret)
667 return ret;
668 break;
669 case Opt_prjjquota:
670 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
671 if (ret)
672 return ret;
673 break;
674 case Opt_offusrjquota:
675 ret = f2fs_clear_qf_name(sb, USRQUOTA);
676 if (ret)
677 return ret;
678 break;
679 case Opt_offgrpjquota:
680 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
681 if (ret)
682 return ret;
683 break;
684 case Opt_offprjjquota:
685 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
686 if (ret)
687 return ret;
688 break;
689 case Opt_jqfmt_vfsold:
63189b78 690 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 691 break;
692 case Opt_jqfmt_vfsv0:
63189b78 693 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 694 break;
695 case Opt_jqfmt_vfsv1:
63189b78 696 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 697 break;
698 case Opt_noquota:
699 clear_opt(sbi, QUOTA);
700 clear_opt(sbi, USRQUOTA);
701 clear_opt(sbi, GRPQUOTA);
702 clear_opt(sbi, PRJQUOTA);
703 break;
0abd675e 704#else
4b2414d0 705 case Opt_quota:
0abd675e
CY		 706 case Opt_usrquota:
707 case Opt_grpquota:
5c57132e 708 case Opt_prjquota:
4b2414d0
CY		 709 case Opt_usrjquota:
710 case Opt_grpjquota:
711 case Opt_prjjquota:
712 case Opt_offusrjquota:
713 case Opt_offgrpjquota:
714 case Opt_offprjjquota:
715 case Opt_jqfmt_vfsold:
716 case Opt_jqfmt_vfsv0:
717 case Opt_jqfmt_vfsv1:
718 case Opt_noquota:
dcbb4c10 719 f2fs_info(sbi, "quota operations not supported");
0abd675e
CY		 720 break;
721#endif
0cdd3195
HL		 722 case Opt_whint:
723 name = match_strdup(&args[0]);
724 if (!name)
725 return -ENOMEM;
3c57f751 726 if (!strcmp(name, "user-based")) {
63189b78 727 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
3c57f751 728 } else if (!strcmp(name, "off")) {
63189b78 729 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
3c57f751 730 } else if (!strcmp(name, "fs-based")) {
63189b78 731 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
0cdd3195 732 } else {
5222595d 733 kvfree(name);
0cdd3195
HL		 734 return -EINVAL;
735 }
5222595d 736 kvfree(name);
0cdd3195 737 break;
07939627
JK		 738 case Opt_alloc:
739 name = match_strdup(&args[0]);
740 if (!name)
741 return -ENOMEM;
742
3c57f751 743 if (!strcmp(name, "default")) {
63189b78 744 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
3c57f751 745 } else if (!strcmp(name, "reuse")) {
63189b78 746 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627 747 } else {
5222595d 748 kvfree(name);
07939627
JK		 749 return -EINVAL;
750 }
5222595d 751 kvfree(name);
07939627 752 break;
93cf93f1
JZ		 753 case Opt_fsync:
754 name = match_strdup(&args[0]);
755 if (!name)
756 return -ENOMEM;
3c57f751 757 if (!strcmp(name, "posix")) {
63189b78 758 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
3c57f751 759 } else if (!strcmp(name, "strict")) {
63189b78 760 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
3c57f751 761 } else if (!strcmp(name, "nobarrier")) {
d6290814
JK		 762 F2FS_OPTION(sbi).fsync_mode =
763 FSYNC_MODE_NOBARRIER;
93cf93f1 764 } else {
5222595d 765 kvfree(name);
93cf93f1
JZ		 766 return -EINVAL;
767 }
5222595d 768 kvfree(name);
93cf93f1 769 break;
ff62af20 770 case Opt_test_dummy_encryption:
643fa961 771#ifdef CONFIG_FS_ENCRYPTION
7beb01f7 772 if (!f2fs_sb_has_encrypt(sbi)) {
dcbb4c10 773 f2fs_err(sbi, "Encrypt feature is off");
ff62af20
SY		 774 return -EINVAL;
775 }
776
777 F2FS_OPTION(sbi).test_dummy_encryption = true;
dcbb4c10 778 f2fs_info(sbi, "Test dummy encryption mode enabled");
ff62af20 779#else
dcbb4c10 780 f2fs_info(sbi, "Test dummy encryption mount option ignored");
ff62af20
SY		 781#endif
782 break;
4d3aed70
DR		 783 case Opt_checkpoint_disable_cap_perc:
784 if (args->from && match_int(args, &arg))
4354994f 785 return -EINVAL;
4d3aed70
DR		 786 if (arg < 0 || arg > 100)
787 return -EINVAL;
788 if (arg == 100)
789 F2FS_OPTION(sbi).unusable_cap =
790 sbi->user_block_count;
791 else
792 F2FS_OPTION(sbi).unusable_cap =
793 (sbi->user_block_count / 100) * arg;
794 set_opt(sbi, DISABLE_CHECKPOINT);
795 break;
796 case Opt_checkpoint_disable_cap:
797 if (args->from && match_int(args, &arg))
798 return -EINVAL;
799 F2FS_OPTION(sbi).unusable_cap = arg;
800 set_opt(sbi, DISABLE_CHECKPOINT);
801 break;
802 case Opt_checkpoint_disable:
803 set_opt(sbi, DISABLE_CHECKPOINT);
804 break;
805 case Opt_checkpoint_enable:
806 clear_opt(sbi, DISABLE_CHECKPOINT);
4354994f 807 break;
4c8ff709
CY		 808 case Opt_compress_algorithm:
809 if (!f2fs_sb_has_compression(sbi)) {
810 f2fs_err(sbi, "Compression feature if off");
811 return -EINVAL;
812 }
813 name = match_strdup(&args[0]);
814 if (!name)
815 return -ENOMEM;
3c57f751 816 if (!strcmp(name, "lzo")) {
4c8ff709
CY		 817 F2FS_OPTION(sbi).compress_algorithm =
818 COMPRESS_LZO;
3c57f751 819 } else if (!strcmp(name, "lz4")) {
4c8ff709
CY		 820 F2FS_OPTION(sbi).compress_algorithm =
821 COMPRESS_LZ4;
3c57f751 822 } else if (!strcmp(name, "zstd")) {
50cfa66f
CY		 823 F2FS_OPTION(sbi).compress_algorithm =
824 COMPRESS_ZSTD;
4c8ff709
CY		 825 } else {
826 kfree(name);
827 return -EINVAL;
828 }
829 kfree(name);
830 break;
831 case Opt_compress_log_size:
832 if (!f2fs_sb_has_compression(sbi)) {
833 f2fs_err(sbi, "Compression feature is off");
834 return -EINVAL;
835 }
836 if (args->from && match_int(args, &arg))
837 return -EINVAL;
838 if (arg < MIN_COMPRESS_LOG_SIZE ||
839 arg > MAX_COMPRESS_LOG_SIZE) {
840 f2fs_err(sbi,
841 "Compress cluster log size is out of range");
842 return -EINVAL;
843 }
844 F2FS_OPTION(sbi).compress_log_size = arg;
845 break;
846 case Opt_compress_extension:
847 if (!f2fs_sb_has_compression(sbi)) {
848 f2fs_err(sbi, "Compression feature is off");
849 return -EINVAL;
850 }
851 name = match_strdup(&args[0]);
852 if (!name)
853 return -ENOMEM;
854
855 ext = F2FS_OPTION(sbi).extensions;
856 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
857
858 if (strlen(name) >= F2FS_EXTENSION_LEN ||
859 ext_cnt >= COMPRESS_EXT_NUM) {
860 f2fs_err(sbi,
861 "invalid extension length/number");
862 kfree(name);
863 return -EINVAL;
864 }
865
866 strcpy(ext[ext_cnt], name);
867 F2FS_OPTION(sbi).compress_ext_cnt++;
868 kfree(name);
869 break;
696c018c 870 default:
dcbb4c10
JP		 871 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
872 p);
696c018c
NJ		 873 return -EINVAL;
874 }
875 }
4b2414d0
CY		 876#ifdef CONFIG_QUOTA
877 if (f2fs_check_quota_options(sbi))
878 return -EINVAL;
00960c2c 879#else
7beb01f7 880 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 881 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
00960c2c
SY		 882 return -EINVAL;
883 }
7beb01f7 884 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 885 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
4ddc1b28
CY		 886 return -EINVAL;
887 }
4b2414d0 888#endif
5aba5430
DR		 889#ifndef CONFIG_UNICODE
890 if (f2fs_sb_has_casefold(sbi)) {
891 f2fs_err(sbi,
892 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
893 return -EINVAL;
894 }
895#endif
ec91538d 896
b0332a0f 897 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
dcbb4c10
JP		 898 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
899 F2FS_IO_SIZE_KB(sbi));
ec91538d
JK		 900 return -EINVAL;
901 }
6afc662e
CY		 902
903 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
70db5b04
JK		 904 int min_size, max_size;
905
7beb01f7
CY		 906 if (!f2fs_sb_has_extra_attr(sbi) ||
907 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
dcbb4c10 908 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
4d817ae0
CY		 909 return -EINVAL;
910 }
6afc662e 911 if (!test_opt(sbi, INLINE_XATTR)) {
dcbb4c10 912 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
6afc662e
CY		 913 return -EINVAL;
914 }
70db5b04
JK		 915
916 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
dd6c89b5 917 max_size = MAX_INLINE_XATTR_SIZE;
70db5b04
JK		 918
919 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
920 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
dcbb4c10
JP		 921 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
922 min_size, max_size);
6afc662e
CY		 923 return -EINVAL;
924 }
925 }
0cdd3195 926
b0332a0f 927 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
dcbb4c10 928 f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
4354994f
DR		 929 return -EINVAL;
930 }
931
0cdd3195
HL		 932 /* Not pass down write hints if the number of active logs is lesser
933 * than NR_CURSEG_TYPE.
934 */
63189b78
CY		 935 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
936 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 937 return 0;
938}
939
aff063e2
JK		 940static struct inode *f2fs_alloc_inode(struct super_block *sb)
941{
942 struct f2fs_inode_info *fi;
943
a0acdfe0 944 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 945 if (!fi)
946 return NULL;
947
948 init_once((void *) fi);
949
434720fa 950 /* Initialize f2fs-specific inode info */
204706c7 951 atomic_set(&fi->dirty_pages, 0);
d928bfbf 952 init_rwsem(&fi->i_sem);
c10c9820 953 spin_lock_init(&fi->i_size_lock);
2710fd7e 954 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 955 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 956 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 957 INIT_LIST_HEAD(&fi->inmem_pages);
958 mutex_init(&fi->inmem_lock);
b2532c69
CY		 959 init_rwsem(&fi->i_gc_rwsem[READ]);
960 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 961 init_rwsem(&fi->i_mmap_sem);
27161f13 962 init_rwsem(&fi->i_xattr_sem);
aff063e2 963
ab9fa662
JK		 964 /* Will be used by directory only */
965 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 966
aff063e2
JK		 967 return &fi->vfs_inode;
968}
969
531ad7d5
JK		 970static int f2fs_drop_inode(struct inode *inode)
971{
a8933b6b 972 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
b8d96a30 973 int ret;
a8933b6b
CY		 974
975 /*
976 * during filesystem shutdown, if checkpoint is disabled,
977 * drop useless meta/node dirty pages.
978 */
979 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
980 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
981 inode->i_ino == F2FS_META_INO(sbi)) {
982 trace_f2fs_drop_inode(inode, 1);
983 return 1;
984 }
985 }
986
531ad7d5
JK		 987 /*
988 * This is to avoid a deadlock condition like below.
989 * writeback_single_inode(inode)
990 * - f2fs_write_data_page
991 * - f2fs_gc -> iput -> evict
992 * - inode_wait_for_writeback(inode)
993 */
0f18b462 994 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 995 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 996 /* to avoid evict_inode call simultaneously */
997 atomic_inc(&inode->i_count);
06e1bc05
JK		 998 spin_unlock(&inode->i_lock);
999
1000 /* some remained atomic pages should discarded */
1001 if (f2fs_is_atomic_file(inode))
4d57b86d 1002 f2fs_drop_inmem_pages(inode);
06e1bc05 1003
3e72f721
JK		 1004 /* should remain fi->extent_tree for writepage */
1005 f2fs_destroy_extent_node(inode);
1006
06e1bc05 1007 sb_start_intwrite(inode->i_sb);
fc9581c8 1008 f2fs_i_size_write(inode, 0);
06e1bc05 1009
a0770e13 1010 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
1011 inode, NULL, 0, DATA);
1012 truncate_inode_pages_final(inode->i_mapping);
1013
06e1bc05 1014 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 1015 f2fs_truncate(inode);
06e1bc05
JK		 1016
1017 sb_end_intwrite(inode->i_sb);
1018
06e1bc05 1019 spin_lock(&inode->i_lock);
3e72f721 1020 atomic_dec(&inode->i_count);
06e1bc05 1021 }
b8d96a30 1022 trace_f2fs_drop_inode(inode, 0);
531ad7d5 1023 return 0;
06e1bc05 1024 }
b8d96a30 1025 ret = generic_drop_inode(inode);
8ce589c7
EB		 1026 if (!ret)
1027 ret = fscrypt_drop_inode(inode);
b8d96a30
HP		 1028 trace_f2fs_drop_inode(inode, ret);
1029 return ret;
531ad7d5
JK		 1030}
1031
7c45729a 1032int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 1033{
0f18b462 1034 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 1035 int ret = 0;
0f18b462 1036
0f18b462
JK		 1037 spin_lock(&sbi->inode_lock[DIRTY_META]);
1038 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 1039 ret = 1;
1040 } else {
1041 set_inode_flag(inode, FI_DIRTY_INODE);
1042 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 1043 }
7c45729a
JK		 1044 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
1045 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 1046 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 1047 inc_page_count(sbi, F2FS_DIRTY_IMETA);
1048 }
338bbfa0 1049 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 1050 return ret;
0f18b462
JK		 1051}
1052
1053void f2fs_inode_synced(struct inode *inode)
1054{
1055 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1056
1057 spin_lock(&sbi->inode_lock[DIRTY_META]);
1058 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
1059 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1060 return;
1061 }
7c45729a
JK		 1062 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
1063 list_del_init(&F2FS_I(inode)->gdirty_list);
1064 dec_page_count(sbi, F2FS_DIRTY_IMETA);
1065 }
0f18b462 1066 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 1067 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 1068 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 1069 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 1070}
1071
b56ab837
JK		 1072/*
1073 * f2fs_dirty_inode() is called from __mark_inode_dirty()
1074 *
1075 * We should call set_dirty_inode to write the dirty inode through write_inode.
1076 */
1077static void f2fs_dirty_inode(struct inode *inode, int flags)
1078{
1079 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1080
1081 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
1082 inode->i_ino == F2FS_META_INO(sbi))
1083 return;
1084
1085 if (flags == I_DIRTY_TIME)
1086 return;
1087
1088 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1089 clear_inode_flag(inode, FI_AUTO_RECOVER);
1090
7c45729a 1091 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 1092}
1093
d01718a0 1094static void f2fs_free_inode(struct inode *inode)
aff063e2 1095{
2c58d548 1096 fscrypt_free_inode(inode);
aff063e2
JK		 1097 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1098}
1099
523be8a6
JK		 1100static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1101{
41382ec4 1102 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 1103 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 1104}
1105
3c62be17
JK		 1106static void destroy_device_list(struct f2fs_sb_info *sbi)
1107{
1108 int i;
1109
1110 for (i = 0; i < sbi->s_ndevs; i++) {
1111 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1112#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1113 kvfree(FDEV(i).blkz_seq);
3c62be17
JK		 1114#endif
1115 }
5222595d 1116 kvfree(sbi->devs);
3c62be17
JK		 1117}
1118
aff063e2
JK		 1119static void f2fs_put_super(struct super_block *sb)
1120{
1121 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1122 int i;
cf5c759f 1123 bool dropped;
aff063e2 1124
0abd675e 1125 f2fs_quota_off_umount(sb);
aff063e2 1126
2658e50d
JK		 1127 /* prevent remaining shrinker jobs */
1128 mutex_lock(&sbi->umount_mutex);
1129
85dc2f2c
JK		 1130 /*
1131 * We don't need to do checkpoint when superblock is clean.
1132 * But, the previous checkpoint was not done by umount, it needs to do
1133 * clean checkpoint again.
1134 */
4354994f
DR		 1135 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1136 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1137 struct cp_control cpc = {
1138 .reason = CP_UMOUNT,
1139 };
4d57b86d 1140 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1141 }
aff063e2 1142
4e6a8d9b 1143 /* be sure to wait for any on-going discard commands */
03f2c02d 1144 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1145
7d20c8ab
CY		 1146 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1147 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1148 struct cp_control cpc = {
1149 .reason = CP_UMOUNT | CP_TRIMMED,
1150 };
4d57b86d 1151 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1152 }
1153
cf779cab
JK		 1154 /*
1155 * normally superblock is clean, so we need to release this.
1156 * In addition, EIO will skip do checkpoint, we need this as well.
1157 */
4d57b86d 1158 f2fs_release_ino_entry(sbi, true);
6f12ac25 1159
2658e50d
JK		 1160 f2fs_leave_shrinker(sbi);
1161 mutex_unlock(&sbi->umount_mutex);
1162
17c19120 1163 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1164 f2fs_flush_merged_writes(sbi);
17c19120 1165
bf22c3cc 1166 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
50fa53ec
CY		 1167
1168 f2fs_bug_on(sbi, sbi->fsync_node_num);
1169
aff063e2 1170 iput(sbi->node_inode);
7c77bf7d
JK		 1171 sbi->node_inode = NULL;
1172
aff063e2 1173 iput(sbi->meta_inode);
7c77bf7d 1174 sbi->meta_inode = NULL;
aff063e2 1175
60aa4d55
ST		 1176 /*
1177 * iput() can update stat information, if f2fs_write_checkpoint()
1178 * above failed with error.
1179 */
1180 f2fs_destroy_stats(sbi);
1181
aff063e2 1182 /* destroy f2fs internal modules */
4d57b86d
CY		 1183 f2fs_destroy_node_manager(sbi);
1184 f2fs_destroy_segment_manager(sbi);
aff063e2 1185
4c8ff709
CY		 1186 f2fs_destroy_post_read_wq(sbi);
1187
5222595d 1188 kvfree(sbi->ckpt);
a398101a 1189
dc6b2055 1190 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1191
1192 sb->s_fs_info = NULL;
43b6573b
KM		 1193 if (sbi->s_chksum_driver)
1194 crypto_free_shash(sbi->s_chksum_driver);
5222595d 1195 kvfree(sbi->raw_super);
523be8a6 1196
3c62be17 1197 destroy_device_list(sbi);
a999150f 1198 f2fs_destroy_xattr_caches(sbi);
b6895e8f 1199 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1200#ifdef CONFIG_QUOTA
1201 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1202 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1203#endif
523be8a6 1204 destroy_percpu_info(sbi);
a912b54d 1205 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 1206 kvfree(sbi->write_io[i]);
5aba5430
DR		 1207#ifdef CONFIG_UNICODE
1208 utf8_unload(sbi->s_encoding);
1209#endif
5222595d 1210 kvfree(sbi);
aff063e2
JK		 1211}
1212
1213int f2fs_sync_fs(struct super_block *sb, int sync)
1214{
1215 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1216 int err = 0;
aff063e2 1217
1f227a3e
JK		 1218 if (unlikely(f2fs_cp_error(sbi)))
1219 return 0;
4354994f
DR		 1220 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1221 return 0;
1f227a3e 1222
a2a4a7e4
NJ		 1223 trace_f2fs_sync_fs(sb, sync);
1224
4b2414d0
CY		 1225 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1226 return -EAGAIN;
1227
b7473754 1228 if (sync) {
d5053a34
JK		 1229 struct cp_control cpc;
1230
119ee914
JK		 1231 cpc.reason = __get_cp_reason(sbi);
1232
fb24fea7 1233 down_write(&sbi->gc_lock);
4d57b86d 1234 err = f2fs_write_checkpoint(sbi, &cpc);
fb24fea7 1235 up_write(&sbi->gc_lock);
b7473754 1236 }
05ca3632 1237 f2fs_trace_ios(NULL, 1);
aff063e2 1238
c34f42e2 1239 return err;
aff063e2
JK		 1240}
1241
d6212a5f
CL		 1242static int f2fs_freeze(struct super_block *sb)
1243{
77888c1e 1244 if (f2fs_readonly(sb))
d6212a5f
CL		 1245 return 0;
1246
b4b9d34c
JK		 1247 /* IO error happened before */
1248 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1249 return -EIO;
1250
1251 /* must be clean, since sync_filesystem() was already called */
1252 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1253 return -EINVAL;
1254 return 0;
d6212a5f
CL		 1255}
1256
1257static int f2fs_unfreeze(struct super_block *sb)
1258{
1259 return 0;
1260}
1261
ddc34e32
CY		 1262#ifdef CONFIG_QUOTA
1263static int f2fs_statfs_project(struct super_block *sb,
1264 kprojid_t projid, struct kstatfs *buf)
1265{
1266 struct kqid qid;
1267 struct dquot *dquot;
1268 u64 limit;
1269 u64 curblock;
1270
1271 qid = make_kqid_projid(projid);
1272 dquot = dqget(sb, qid);
1273 if (IS_ERR(dquot))
1274 return PTR_ERR(dquot);
955ac6e5 1275 spin_lock(&dquot->dq_dqb_lock);
ddc34e32 1276
bf2cbd3c
CX		 1277 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
1278 dquot->dq_dqb.dqb_bhardlimit);
acdf2172
CX		 1279 if (limit)
1280 limit >>= sb->s_blocksize_bits;
909110c0 1281
ddc34e32
CY		 1282 if (limit && buf->f_blocks > limit) {
1283 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1284 buf->f_blocks = limit;
1285 buf->f_bfree = buf->f_bavail =
1286 (buf->f_blocks > curblock) ?
1287 (buf->f_blocks - curblock) : 0;
1288 }
1289
bf2cbd3c
CX		 1290 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
1291 dquot->dq_dqb.dqb_ihardlimit);
909110c0 1292
ddc34e32
CY		 1293 if (limit && buf->f_files > limit) {
1294 buf->f_files = limit;
1295 buf->f_ffree =
1296 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1297 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1298 }
1299
955ac6e5 1300 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1301 dqput(dquot);
1302 return 0;
1303}
1304#endif
1305
aff063e2
JK		 1306static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1307{
1308 struct super_block *sb = dentry->d_sb;
1309 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1310 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1311 block_t total_count, user_block_count, start_count;
0cc091d0 1312 u64 avail_node_count;
aff063e2
JK		 1313
1314 total_count = le64_to_cpu(sbi->raw_super->block_count);
1315 user_block_count = sbi->user_block_count;
1316 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1317 buf->f_type = F2FS_SUPER_MAGIC;
1318 buf->f_bsize = sbi->blocksize;
1319
1320 buf->f_blocks = total_count - start_count;
f66c027e 1321 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1322 sbi->current_reserved_blocks;
c9c8ed50
CY		 1323
1324 spin_lock(&sbi->stat_lock);
4354994f
DR		 1325 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1326 buf->f_bfree = 0;
1327 else
1328 buf->f_bfree -= sbi->unusable_block_count;
c9c8ed50 1329 spin_unlock(&sbi->stat_lock);
4354994f 1330
63189b78
CY		 1331 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1332 buf->f_bavail = buf->f_bfree -
1333 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1334 else
1335 buf->f_bavail = 0;
aff063e2 1336
27cae0bc 1337 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1338
1339 if (avail_node_count > user_block_count) {
1340 buf->f_files = user_block_count;
1341 buf->f_ffree = buf->f_bavail;
1342 } else {
1343 buf->f_files = avail_node_count;
1344 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1345 buf->f_bavail);
1346 }
aff063e2 1347
5a20d339 1348 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1349 buf->f_fsid.val[0] = (u32)id;
1350 buf->f_fsid.val[1] = (u32)(id >> 32);
1351
ddc34e32
CY		 1352#ifdef CONFIG_QUOTA
1353 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1354 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1355 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1356 }
1357#endif
aff063e2
JK		 1358 return 0;
1359}
1360
4b2414d0
CY		 1361static inline void f2fs_show_quota_options(struct seq_file *seq,
1362 struct super_block *sb)
1363{
1364#ifdef CONFIG_QUOTA
1365 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1366
63189b78 1367 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1368 char *fmtname = "";
1369
63189b78 1370 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1371 case QFMT_VFS_OLD:
1372 fmtname = "vfsold";
1373 break;
1374 case QFMT_VFS_V0:
1375 fmtname = "vfsv0";
1376 break;
1377 case QFMT_VFS_V1:
1378 fmtname = "vfsv1";
1379 break;
1380 }
1381 seq_printf(seq, ",jqfmt=%s", fmtname);
1382 }
1383
63189b78
CY		 1384 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1385 seq_show_option(seq, "usrjquota",
1386 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1387
63189b78
CY		 1388 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1389 seq_show_option(seq, "grpjquota",
1390 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1391
63189b78
CY		 1392 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1393 seq_show_option(seq, "prjjquota",
1394 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1395#endif
1396}
1397
4c8ff709
CY		 1398static inline void f2fs_show_compress_options(struct seq_file *seq,
1399 struct super_block *sb)
1400{
1401 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1402 char *algtype = "";
1403 int i;
1404
1405 if (!f2fs_sb_has_compression(sbi))
1406 return;
1407
1408 switch (F2FS_OPTION(sbi).compress_algorithm) {
1409 case COMPRESS_LZO:
1410 algtype = "lzo";
1411 break;
1412 case COMPRESS_LZ4:
1413 algtype = "lz4";
1414 break;
50cfa66f
CY		 1415 case COMPRESS_ZSTD:
1416 algtype = "zstd";
1417 break;
4c8ff709
CY		 1418 }
1419 seq_printf(seq, ",compress_algorithm=%s", algtype);
1420
1421 seq_printf(seq, ",compress_log_size=%u",
1422 F2FS_OPTION(sbi).compress_log_size);
1423
1424 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) {
1425 seq_printf(seq, ",compress_extension=%s",
1426 F2FS_OPTION(sbi).extensions[i]);
1427 }
1428}
1429
aff063e2
JK		 1430static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1431{
1432 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1433
bbbc34fd
CY		 1434 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC)
1435 seq_printf(seq, ",background_gc=%s", "sync");
1436 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON)
1437 seq_printf(seq, ",background_gc=%s", "on");
1438 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF)
696c018c 1439 seq_printf(seq, ",background_gc=%s", "off");
bbbc34fd 1440
aff063e2
JK		 1441 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1442 seq_puts(seq, ",disable_roll_forward");
a9117eca
CY		 1443 if (test_opt(sbi, NORECOVERY))
1444 seq_puts(seq, ",norecovery");
aff063e2
JK		 1445 if (test_opt(sbi, DISCARD))
1446 seq_puts(seq, ",discard");
81621f97
ST		 1447 else
1448 seq_puts(seq, ",nodiscard");
aff063e2 1449 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1450 seq_puts(seq, ",no_heap");
1451 else
1452 seq_puts(seq, ",heap");
aff063e2
JK		 1453#ifdef CONFIG_F2FS_FS_XATTR
1454 if (test_opt(sbi, XATTR_USER))
1455 seq_puts(seq, ",user_xattr");
1456 else
1457 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1458 if (test_opt(sbi, INLINE_XATTR))
1459 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1460 else
1461 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1462 if (test_opt(sbi, INLINE_XATTR_SIZE))
1463 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1464 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1465#endif
1466#ifdef CONFIG_F2FS_FS_POSIX_ACL
1467 if (test_opt(sbi, POSIX_ACL))
1468 seq_puts(seq, ",acl");
1469 else
1470 seq_puts(seq, ",noacl");
1471#endif
1472 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1473 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1474 if (test_opt(sbi, INLINE_DATA))
1475 seq_puts(seq, ",inline_data");
75342797
WL		 1476 else
1477 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1478 if (test_opt(sbi, INLINE_DENTRY))
1479 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1480 else
1481 seq_puts(seq, ",noinline_dentry");
b270ad6f 1482 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1483 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1484 if (test_opt(sbi, NOBARRIER))
1485 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1486 if (test_opt(sbi, FASTBOOT))
1487 seq_puts(seq, ",fastboot");
89672159
CY		 1488 if (test_opt(sbi, EXTENT_CACHE))
1489 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1490 else
1491 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1492 if (test_opt(sbi, DATA_FLUSH))
1493 seq_puts(seq, ",data_flush");
36abef4e
JK		 1494
1495 seq_puts(seq, ",mode=");
b0332a0f 1496 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE)
36abef4e 1497 seq_puts(seq, "adaptive");
b0332a0f 1498 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS)
36abef4e 1499 seq_puts(seq, "lfs");
63189b78 1500 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1501 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1502 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1503 F2FS_OPTION(sbi).root_reserved_blocks,
1504 from_kuid_munged(&init_user_ns,
1505 F2FS_OPTION(sbi).s_resuid),
1506 from_kgid_munged(&init_user_ns,
1507 F2FS_OPTION(sbi).s_resgid));
ec91538d 1508 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1509 seq_printf(seq, ",io_bits=%u",
1510 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1511#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1512 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1513 seq_printf(seq, ",fault_injection=%u",
63189b78 1514 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1515 seq_printf(seq, ",fault_type=%u",
1516 F2FS_OPTION(sbi).fault_info.inject_type);
1517 }
0cc0dec2 1518#endif
0abd675e 1519#ifdef CONFIG_QUOTA
4b2414d0
CY		 1520 if (test_opt(sbi, QUOTA))
1521 seq_puts(seq, ",quota");
0abd675e
CY		 1522 if (test_opt(sbi, USRQUOTA))
1523 seq_puts(seq, ",usrquota");
1524 if (test_opt(sbi, GRPQUOTA))
1525 seq_puts(seq, ",grpquota");
5c57132e
CY		 1526 if (test_opt(sbi, PRJQUOTA))
1527 seq_puts(seq, ",prjquota");
0cc0dec2 1528#endif
4b2414d0 1529 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1530 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1531 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1532 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1533 seq_printf(seq, ",whint_mode=%s", "fs-based");
643fa961 1534#ifdef CONFIG_FS_ENCRYPTION
ff62af20
SY		 1535 if (F2FS_OPTION(sbi).test_dummy_encryption)
1536 seq_puts(seq, ",test_dummy_encryption");
1537#endif
aff063e2 1538
63189b78 1539 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1540 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1541 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1542 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1543
4354994f 1544 if (test_opt(sbi, DISABLE_CHECKPOINT))
4d3aed70
DR		 1545 seq_printf(seq, ",checkpoint=disable:%u",
1546 F2FS_OPTION(sbi).unusable_cap);
63189b78 1547 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1548 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1549 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1550 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1551 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1552 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
4c8ff709
CY		 1553
1554 f2fs_show_compress_options(seq, sbi->sb);
aff063e2
JK		 1555 return 0;
1556}
1557
498c5e9f
YH		 1558static void default_options(struct f2fs_sb_info *sbi)
1559{
1560 /* init some FS parameters */
63189b78
CY		 1561 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1562 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1563 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1564 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1565 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1566 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1567 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1568 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
91faa534 1569 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4;
4c8ff709
CY		 1570 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE;
1571 F2FS_OPTION(sbi).compress_ext_cnt = 0;
bbbc34fd 1572 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON;
498c5e9f 1573
39133a50 1574 set_opt(sbi, INLINE_XATTR);
498c5e9f 1575 set_opt(sbi, INLINE_DATA);
97c1794a 1576 set_opt(sbi, INLINE_DENTRY);
3e72f721 1577 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1578 set_opt(sbi, NOHEAP);
4354994f 1579 clear_opt(sbi, DISABLE_CHECKPOINT);
4d3aed70 1580 F2FS_OPTION(sbi).unusable_cap = 0;
1751e8a6 1581 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1582 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1583 set_opt(sbi, DISCARD);
7beb01f7 1584 if (f2fs_sb_has_blkzoned(sbi))
b0332a0f 1585 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS;
a39e5365 1586 else
b0332a0f 1587 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE;
498c5e9f
YH		 1588
1589#ifdef CONFIG_F2FS_FS_XATTR
1590 set_opt(sbi, XATTR_USER);
1591#endif
1592#ifdef CONFIG_F2FS_FS_POSIX_ACL
1593 set_opt(sbi, POSIX_ACL);
1594#endif
36dbd328 1595
d494500a 1596 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1597}
1598
ea676733
JK		 1599#ifdef CONFIG_QUOTA
1600static int f2fs_enable_quotas(struct super_block *sb);
1601#endif
4354994f
DR		 1602
1603static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1604{
812a9597 1605 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1606 struct cp_control cpc;
812a9597
JK		 1607 int err = 0;
1608 int ret;
4d3aed70 1609 block_t unusable;
4354994f 1610
812a9597 1611 if (s_flags & SB_RDONLY) {
dcbb4c10 1612 f2fs_err(sbi, "checkpoint=disable on readonly fs");
812a9597
JK		 1613 return -EINVAL;
1614 }
4354994f
DR		 1615 sbi->sb->s_flags |= SB_ACTIVE;
1616
4354994f
DR		 1617 f2fs_update_time(sbi, DISABLE_TIME);
1618
1619 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
fb24fea7 1620 down_write(&sbi->gc_lock);
4354994f 1621 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1622 if (err == -ENODATA) {
1623 err = 0;
4354994f 1624 break;
812a9597 1625 }
8f31b466 1626 if (err && err != -EAGAIN)
812a9597 1627 break;
4354994f 1628 }
4354994f 1629
812a9597
JK		 1630 ret = sync_filesystem(sbi->sb);
1631 if (ret || err) {
1632 err = ret ? ret: err;
1633 goto restore_flag;
1634 }
4354994f 1635
4d3aed70
DR		 1636 unusable = f2fs_get_unusable_blocks(sbi);
1637 if (f2fs_disable_cp_again(sbi, unusable)) {
812a9597
JK		 1638 err = -EAGAIN;
1639 goto restore_flag;
1640 }
4354994f 1641
fb24fea7 1642 down_write(&sbi->gc_lock);
4354994f
DR		 1643 cpc.reason = CP_PAUSE;
1644 set_sbi_flag(sbi, SBI_CP_DISABLED);
896285ad
CY		 1645 err = f2fs_write_checkpoint(sbi, &cpc);
1646 if (err)
1647 goto out_unlock;
4354994f 1648
c9c8ed50 1649 spin_lock(&sbi->stat_lock);
4d3aed70 1650 sbi->unusable_block_count = unusable;
c9c8ed50
CY		 1651 spin_unlock(&sbi->stat_lock);
1652
896285ad 1653out_unlock:
fb24fea7 1654 up_write(&sbi->gc_lock);
812a9597 1655restore_flag:
7a88ddb5 1656 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
812a9597 1657 return err;
4354994f
DR		 1658}
1659
1660static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1661{
fb24fea7 1662 down_write(&sbi->gc_lock);
4354994f
DR		 1663 f2fs_dirty_to_prefree(sbi);
1664
1665 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1666 set_sbi_flag(sbi, SBI_IS_DIRTY);
fb24fea7 1667 up_write(&sbi->gc_lock);
4354994f
DR		 1668
1669 f2fs_sync_fs(sbi->sb, 1);
1670}
1671
696c018c
NJ		 1672static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1673{
1674 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1675 struct f2fs_mount_info org_mount_opt;
0abd675e 1676 unsigned long old_sb_flags;
63189b78 1677 int err;
876dc59e
GZ		 1678 bool need_restart_gc = false;
1679 bool need_stop_gc = false;
9cd81ce3 1680 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f 1681 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1f78adfa 1682 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
4354994f 1683 bool checkpoint_changed;
4b2414d0 1684#ifdef CONFIG_QUOTA
4b2414d0
CY		 1685 int i, j;
1686#endif
696c018c
NJ		 1687
1688 /*
1689 * Save the old mount options in case we
1690 * need to restore them.
1691 */
1692 org_mount_opt = sbi->mount_opt;
0abd675e 1693 old_sb_flags = sb->s_flags;
696c018c 1694
4b2414d0 1695#ifdef CONFIG_QUOTA
63189b78 1696 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1697 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1698 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1699 org_mount_opt.s_qf_names[i] =
1700 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1701 GFP_KERNEL);
1702 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1703 for (j = 0; j < i; j++)
5222595d 1704 kvfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1705 return -ENOMEM;
1706 }
1707 } else {
63189b78 1708 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1709 }
1710 }
1711#endif
1712
df728b0f 1713 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1714 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f 1715 err = f2fs_commit_super(sbi, false);
dcbb4c10
JP		 1716 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1717 err);
df728b0f
JK		 1718 if (!err)
1719 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1720 }
1721
498c5e9f 1722 default_options(sbi);
26666c8a 1723
696c018c
NJ		 1724 /* parse mount options */
1725 err = parse_options(sb, data);
1726 if (err)
1727 goto restore_opts;
4354994f
DR		 1728 checkpoint_changed =
1729 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1730
1731 /*
1732 * Previous and new state of filesystem is RO,
876dc59e 1733 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1734 */
1751e8a6 1735 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1736 goto skip;
1737
ea676733 1738#ifdef CONFIG_QUOTA
1751e8a6 1739 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1740 err = dquot_suspend(sb, -1);
1741 if (err < 0)
1742 goto restore_opts;
4354994f 1743 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1744 /* dquot_resume needs RW */
1751e8a6 1745 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1746 if (sb_any_quota_suspended(sb)) {
1747 dquot_resume(sb, -1);
7beb01f7 1748 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1749 err = f2fs_enable_quotas(sb);
1750 if (err)
1751 goto restore_opts;
1752 }
0abd675e 1753 }
ea676733 1754#endif
9cd81ce3
CY		 1755 /* disallow enable/disable extent_cache dynamically */
1756 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1757 err = -EINVAL;
dcbb4c10 1758 f2fs_warn(sbi, "switch extent_cache option is not allowed");
9cd81ce3
CY		 1759 goto restore_opts;
1760 }
1761
1f78adfa
CY		 1762 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
1763 err = -EINVAL;
1764 f2fs_warn(sbi, "switch io_bits option is not allowed");
1765 goto restore_opts;
1766 }
1767
4354994f
DR		 1768 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1769 err = -EINVAL;
dcbb4c10 1770 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
4354994f
DR		 1771 goto restore_opts;
1772 }
1773
696c018c
NJ		 1774 /*
1775 * We stop the GC thread if FS is mounted as RO
1776 * or if background_gc = off is passed in mount
1777 * option. Also sync the filesystem.
1778 */
bbbc34fd
CY		 1779 if ((*flags & SB_RDONLY) ||
1780 F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) {
696c018c 1781 if (sbi->gc_thread) {
4d57b86d 1782 f2fs_stop_gc_thread(sbi);
876dc59e 1783 need_restart_gc = true;
696c018c 1784 }
aba291b3 1785 } else if (!sbi->gc_thread) {
4d57b86d 1786 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1787 if (err)
1788 goto restore_opts;
876dc59e
GZ		 1789 need_stop_gc = true;
1790 }
1791
63189b78
CY		 1792 if (*flags & SB_RDONLY ||
1793 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1794 writeback_inodes_sb(sb, WB_REASON_SYNC);
1795 sync_inodes_sb(sb);
1796
1797 set_sbi_flag(sbi, SBI_IS_DIRTY);
1798 set_sbi_flag(sbi, SBI_IS_CLOSE);
1799 f2fs_sync_fs(sb, 1);
1800 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1801 }
1802
4354994f
DR		 1803 if (checkpoint_changed) {
1804 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1805 err = f2fs_disable_checkpoint(sbi);
1806 if (err)
1807 goto restore_gc;
1808 } else {
1809 f2fs_enable_checkpoint(sbi);
1810 }
1811 }
1812
876dc59e
GZ		 1813 /*
1814 * We stop issue flush thread if FS is mounted as RO
1815 * or if flush_merge is not passed in mount option.
1816 */
1751e8a6 1817 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1818 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1819 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1820 } else {
4d57b86d 1821 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1822 if (err)
a688b9d9 1823 goto restore_gc;
696c018c
NJ		 1824 }
1825skip:
4b2414d0
CY		 1826#ifdef CONFIG_QUOTA
1827 /* Release old quota file names */
1828 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1829 kvfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1830#endif
696c018c 1831 /* Update the POSIXACL Flag */
1751e8a6
LT		 1832 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1833 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1834
7e65be49 1835 limit_reserve_root(sbi);
095680f2 1836 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1837 return 0;
876dc59e
GZ		 1838restore_gc:
1839 if (need_restart_gc) {
4d57b86d 1840 if (f2fs_start_gc_thread(sbi))
dcbb4c10 1841 f2fs_warn(sbi, "background gc thread has stopped");
876dc59e 1842 } else if (need_stop_gc) {
4d57b86d 1843 f2fs_stop_gc_thread(sbi);
876dc59e 1844 }
696c018c 1845restore_opts:
4b2414d0 1846#ifdef CONFIG_QUOTA
63189b78 1847 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1848 for (i = 0; i < MAXQUOTAS; i++) {
5222595d 1849 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 1850 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1851 }
1852#endif
696c018c 1853 sbi->mount_opt = org_mount_opt;
0abd675e 1854 sb->s_flags = old_sb_flags;
696c018c
NJ		 1855 return err;
1856}
1857
0abd675e
CY		 1858#ifdef CONFIG_QUOTA
1859/* Read data from quotafile */
1860static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1861 size_t len, loff_t off)
1862{
1863 struct inode *inode = sb_dqopt(sb)->files[type];
1864 struct address_space *mapping = inode->i_mapping;
1865 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1866 int offset = off & (sb->s_blocksize - 1);
1867 int tocopy;
1868 size_t toread;
1869 loff_t i_size = i_size_read(inode);
1870 struct page *page;
1871 char *kaddr;
1872
1873 if (off > i_size)
1874 return 0;
1875
1876 if (off + len > i_size)
1877 len = i_size - off;
1878 toread = len;
1879 while (toread > 0) {
1880 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1881repeat:
02117b8a 1882 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1883 if (IS_ERR(page)) {
1884 if (PTR_ERR(page) == -ENOMEM) {
5df7731f
CY		 1885 congestion_wait(BLK_RW_ASYNC,
1886 DEFAULT_IO_TIMEOUT);
4e46a023
JK		 1887 goto repeat;
1888 }
af033b2a 1889 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1890 return PTR_ERR(page);
4e46a023 1891 }
0abd675e
CY		 1892
1893 lock_page(page);
1894
1895 if (unlikely(page->mapping != mapping)) {
1896 f2fs_put_page(page, 1);
1897 goto repeat;
1898 }
1899 if (unlikely(!PageUptodate(page))) {
1900 f2fs_put_page(page, 1);
af033b2a 1901 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1902 return -EIO;
1903 }
1904
1905 kaddr = kmap_atomic(page);
1906 memcpy(data, kaddr + offset, tocopy);
1907 kunmap_atomic(kaddr);
1908 f2fs_put_page(page, 1);
1909
1910 offset = 0;
1911 toread -= tocopy;
1912 data += tocopy;
1913 blkidx++;
1914 }
1915 return len;
1916}
1917
1918/* Write to quotafile */
1919static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1920 const char *data, size_t len, loff_t off)
1921{
1922 struct inode *inode = sb_dqopt(sb)->files[type];
1923 struct address_space *mapping = inode->i_mapping;
1924 const struct address_space_operations *a_ops = mapping->a_ops;
1925 int offset = off & (sb->s_blocksize - 1);
1926 size_t towrite = len;
1927 struct page *page;
62f63eea 1928 void *fsdata = NULL;
0abd675e
CY		 1929 char *kaddr;
1930 int err = 0;
1931 int tocopy;
1932
1933 while (towrite > 0) {
1934 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1935 towrite);
4e46a023 1936retry:
0abd675e 1937 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
62f63eea 1938 &page, &fsdata);
4e46a023
JK		 1939 if (unlikely(err)) {
1940 if (err == -ENOMEM) {
5df7731f
CY		 1941 congestion_wait(BLK_RW_ASYNC,
1942 DEFAULT_IO_TIMEOUT);
4e46a023
JK		 1943 goto retry;
1944 }
af033b2a 1945 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1946 break;
4e46a023 1947 }
0abd675e
CY		 1948
1949 kaddr = kmap_atomic(page);
1950 memcpy(kaddr + offset, data, tocopy);
1951 kunmap_atomic(kaddr);
1952 flush_dcache_page(page);
1953
1954 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
62f63eea 1955 page, fsdata);
0abd675e
CY		 1956 offset = 0;
1957 towrite -= tocopy;
1958 off += tocopy;
1959 data += tocopy;
1960 cond_resched();
1961 }
1962
1963 if (len == towrite)
6e5b5d41 1964 return err;
0abd675e
CY		 1965 inode->i_mtime = inode->i_ctime = current_time(inode);
1966 f2fs_mark_inode_dirty_sync(inode, false);
1967 return len - towrite;
1968}
1969
1970static struct dquot **f2fs_get_dquots(struct inode *inode)
1971{
1972 return F2FS_I(inode)->i_dquot;
1973}
1974
1975static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1976{
1977 return &F2FS_I(inode)->i_reserved_quota;
1978}
1979
4b2414d0
CY		 1980static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1981{
af033b2a 1982 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1983 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
af033b2a
CY		 1984 return 0;
1985 }
1986
63189b78
CY		 1987 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1988 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1989}
1990
ea676733 1991int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1992{
ea676733
JK		 1993 int enabled = 0;
1994 int i, err;
1995
7beb01f7 1996 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 1997 err = f2fs_enable_quotas(sbi->sb);
1998 if (err) {
dcbb4c10 1999 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
ea676733
JK		 2000 return 0;
2001 }
2002 return 1;
2003 }
4b2414d0
CY		 2004
2005 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 2006 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 2007 err = f2fs_quota_on_mount(sbi, i);
2008 if (!err) {
2009 enabled = 1;
2010 continue;
2011 }
dcbb4c10
JP		 2012 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
2013 err, i);
4b2414d0
CY		 2014 }
2015 }
ea676733
JK		 2016 return enabled;
2017}
2018
2019static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
2020 unsigned int flags)
2021{
2022 struct inode *qf_inode;
2023 unsigned long qf_inum;
2024 int err;
2025
7beb01f7 2026 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 2027
2028 qf_inum = f2fs_qf_ino(sb, type);
2029 if (!qf_inum)
2030 return -EPERM;
2031
2032 qf_inode = f2fs_iget(sb, qf_inum);
2033 if (IS_ERR(qf_inode)) {
dcbb4c10 2034 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
ea676733
JK		 2035 return PTR_ERR(qf_inode);
2036 }
2037
2038 /* Don't account quota for quota files to avoid recursion */
2039 qf_inode->i_flags |= S_NOQUOTA;
7212b95e 2040 err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
ea676733
JK		 2041 iput(qf_inode);
2042 return err;
2043}
2044
2045static int f2fs_enable_quotas(struct super_block *sb)
2046{
dcbb4c10 2047 struct f2fs_sb_info *sbi = F2FS_SB(sb);
ea676733
JK		 2048 int type, err = 0;
2049 unsigned long qf_inum;
2050 bool quota_mopt[MAXQUOTAS] = {
dcbb4c10
JP		 2051 test_opt(sbi, USRQUOTA),
2052 test_opt(sbi, GRPQUOTA),
2053 test_opt(sbi, PRJQUOTA),
ea676733
JK		 2054 };
2055
af033b2a 2056 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 2057 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
af033b2a
CY		 2058 return 0;
2059 }
2060
2061 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
2062
ea676733
JK		 2063 for (type = 0; type < MAXQUOTAS; type++) {
2064 qf_inum = f2fs_qf_ino(sb, type);
2065 if (qf_inum) {
2066 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
2067 DQUOT_USAGE_ENABLED |
2068 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
2069 if (err) {
dcbb4c10
JP		 2070 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
2071 type, err);
ea676733
JK		 2072 for (type--; type >= 0; type--)
2073 dquot_quota_off(sb, type);
af033b2a
CY		 2074 set_sbi_flag(F2FS_SB(sb),
2075 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 2076 return err;
2077 }
4b2414d0
CY		 2078 }
2079 }
ea676733 2080 return 0;
4b2414d0
CY		 2081}
2082
af033b2a 2083int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 2084{
af033b2a 2085 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 2086 struct quota_info *dqopt = sb_dqopt(sb);
2087 int cnt;
2088 int ret;
2089
db6ec53b
JK		 2090 /*
2091 * do_quotactl
2092 * f2fs_quota_sync
2093 * down_read(quota_sem)
2094 * dquot_writeback_dquots()
2095 * f2fs_dquot_commit
2096 * block_operation
2097 * down_read(quota_sem)
2098 */
2099 f2fs_lock_op(sbi);
2100
2101 down_read(&sbi->quota_sem);
0abd675e
CY		 2102 ret = dquot_writeback_dquots(sb, type);
2103 if (ret)
af033b2a 2104 goto out;
0abd675e
CY		 2105
2106 /*
2107 * Now when everything is written we can discard the pagecache so
2108 * that userspace sees the changes.
2109 */
2110 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 2111 struct address_space *mapping;
2112
0abd675e
CY		 2113 if (type != -1 && cnt != type)
2114 continue;
2115 if (!sb_has_quota_active(sb, cnt))
2116 continue;
2117
af033b2a
CY		 2118 mapping = dqopt->files[cnt]->i_mapping;
2119
2120 ret = filemap_fdatawrite(mapping);
0abd675e 2121 if (ret)
af033b2a
CY		 2122 goto out;
2123
2124 /* if we are using journalled quota */
2125 if (is_journalled_quota(sbi))
2126 continue;
2127
2128 ret = filemap_fdatawait(mapping);
2129 if (ret)
2130 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 2131
2132 inode_lock(dqopt->files[cnt]);
2133 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
2134 inode_unlock(dqopt->files[cnt]);
2135 }
af033b2a
CY		 2136out:
2137 if (ret)
2138 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
db6ec53b
JK		 2139 up_read(&sbi->quota_sem);
2140 f2fs_unlock_op(sbi);
af033b2a 2141 return ret;
0abd675e
CY		 2142}
2143
2144static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
2145 const struct path *path)
2146{
2147 struct inode *inode;
2148 int err;
2149
fe973b06
CY		 2150 /* if quota sysfile exists, deny enabling quota with specific file */
2151 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) {
2152 f2fs_err(F2FS_SB(sb), "quota sysfile already exists");
2153 return -EBUSY;
2154 }
2155
9a20d391 2156 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 2157 if (err)
2158 return err;
2159
2160 err = dquot_quota_on(sb, type, format_id, path);
2161 if (err)
2162 return err;
2163
2164 inode = d_inode(path->dentry);
2165
2166 inode_lock(inode);
59c84408 2167 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 2168 f2fs_set_inode_flags(inode);
0abd675e
CY		 2169 inode_unlock(inode);
2170 f2fs_mark_inode_dirty_sync(inode, false);
2171
2172 return 0;
2173}
2174
fe973b06 2175static int __f2fs_quota_off(struct super_block *sb, int type)
0abd675e
CY		 2176{
2177 struct inode *inode = sb_dqopt(sb)->files[type];
2178 int err;
2179
2180 if (!inode || !igrab(inode))
2181 return dquot_quota_off(sb, type);
2182
cda9cc59
YH		 2183 err = f2fs_quota_sync(sb, type);
2184 if (err)
2185 goto out_put;
0abd675e
CY		 2186
2187 err = dquot_quota_off(sb, type);
7beb01f7 2188 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2189 goto out_put;
2190
2191 inode_lock(inode);
59c84408 2192 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2193 f2fs_set_inode_flags(inode);
0abd675e
CY		 2194 inode_unlock(inode);
2195 f2fs_mark_inode_dirty_sync(inode, false);
2196out_put:
2197 iput(inode);
2198 return err;
2199}
2200
fe973b06
CY		 2201static int f2fs_quota_off(struct super_block *sb, int type)
2202{
2203 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2204 int err;
2205
2206 err = __f2fs_quota_off(sb, type);
2207
2208 /*
2209 * quotactl can shutdown journalled quota, result in inconsistence
2210 * between quota record and fs data by following updates, tag the
2211 * flag to let fsck be aware of it.
2212 */
2213 if (is_journalled_quota(sbi))
2214 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2215 return err;
2216}
2217
4b2414d0 2218void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2219{
2220 int type;
cda9cc59
YH		 2221 int err;
2222
2223 for (type = 0; type < MAXQUOTAS; type++) {
fe973b06 2224 err = __f2fs_quota_off(sb, type);
cda9cc59
YH		 2225 if (err) {
2226 int ret = dquot_quota_off(sb, type);
0abd675e 2227
dcbb4c10
JP		 2228 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2229 type, err, ret);
af033b2a 2230 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2231 }
2232 }
0e0667b6
JK		 2233 /*
2234 * In case of checkpoint=disable, we must flush quota blocks.
2235 * This can cause NULL exception for node_inode in end_io, since
2236 * put_super already dropped it.
2237 */
2238 sync_filesystem(sb);
0abd675e
CY		 2239}
2240
26b5a079
SY		 2241static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2242{
2243 struct quota_info *dqopt = sb_dqopt(sb);
2244 int type;
2245
2246 for (type = 0; type < MAXQUOTAS; type++) {
2247 if (!dqopt->files[type])
2248 continue;
2249 f2fs_inode_synced(dqopt->files[type]);
2250 }
2251}
2252
af033b2a
CY		 2253static int f2fs_dquot_commit(struct dquot *dquot)
2254{
db6ec53b 2255 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2256 int ret;
2257
2c4e0c52 2258 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING);
af033b2a
CY		 2259 ret = dquot_commit(dquot);
2260 if (ret < 0)
db6ec53b
JK		 2261 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2262 up_read(&sbi->quota_sem);
af033b2a
CY		 2263 return ret;
2264}
2265
2266static int f2fs_dquot_acquire(struct dquot *dquot)
2267{
db6ec53b 2268 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2269 int ret;
2270
db6ec53b 2271 down_read(&sbi->quota_sem);
af033b2a
CY		 2272 ret = dquot_acquire(dquot);
2273 if (ret < 0)
db6ec53b
JK		 2274 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2275 up_read(&sbi->quota_sem);
af033b2a
CY		 2276 return ret;
2277}
2278
2279static int f2fs_dquot_release(struct dquot *dquot)
2280{
db6ec53b 2281 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
2c4e0c52 2282 int ret = dquot_release(dquot);
af033b2a 2283
af033b2a 2284 if (ret < 0)
db6ec53b 2285 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2286 return ret;
2287}
2288
2289static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2290{
2291 struct super_block *sb = dquot->dq_sb;
2292 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2293 int ret = dquot_mark_dquot_dirty(dquot);
af033b2a
CY		 2294
2295 /* if we are using journalled quota */
2296 if (is_journalled_quota(sbi))
2297 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2298
2299 return ret;
2300}
2301
2302static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2303{
db6ec53b 2304 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2c4e0c52 2305 int ret = dquot_commit_info(sb, type);
af033b2a 2306
af033b2a 2307 if (ret < 0)
db6ec53b 2308 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
af033b2a
CY		 2309 return ret;
2310}
26b5a079 2311
94b1e10e 2312static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2313{
2314 *projid = F2FS_I(inode)->i_projid;
2315 return 0;
2316}
2317
0abd675e
CY		 2318static const struct dquot_operations f2fs_quota_operations = {
2319 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2320 .write_dquot = f2fs_dquot_commit,
2321 .acquire_dquot = f2fs_dquot_acquire,
2322 .release_dquot = f2fs_dquot_release,
2323 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2324 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2325 .alloc_dquot = dquot_alloc,
2326 .destroy_dquot = dquot_destroy,
5c57132e 2327 .get_projid = f2fs_get_projid,
0abd675e
CY		 2328 .get_next_id = dquot_get_next_id,
2329};
2330
2331static const struct quotactl_ops f2fs_quotactl_ops = {
2332 .quota_on = f2fs_quota_on,
2333 .quota_off = f2fs_quota_off,
2334 .quota_sync = f2fs_quota_sync,
2335 .get_state = dquot_get_state,
2336 .set_info = dquot_set_dqinfo,
2337 .get_dqblk = dquot_get_dqblk,
2338 .set_dqblk = dquot_set_dqblk,
2339 .get_nextdqblk = dquot_get_next_dqblk,
2340};
2341#else
af033b2a
CY		 2342int f2fs_quota_sync(struct super_block *sb, int type)
2343{
2344 return 0;
2345}
2346
4b2414d0 2347void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2348{
2349}
2350#endif
2351
f62fc9f9 2352static const struct super_operations f2fs_sops = {
aff063e2 2353 .alloc_inode = f2fs_alloc_inode,
d01718a0 2354 .free_inode = f2fs_free_inode,
531ad7d5 2355 .drop_inode = f2fs_drop_inode,
aff063e2 2356 .write_inode = f2fs_write_inode,
b3783873 2357 .dirty_inode = f2fs_dirty_inode,
aff063e2 2358 .show_options = f2fs_show_options,
0abd675e
CY		 2359#ifdef CONFIG_QUOTA
2360 .quota_read = f2fs_quota_read,
2361 .quota_write = f2fs_quota_write,
2362 .get_dquots = f2fs_get_dquots,
2363#endif
aff063e2
JK		 2364 .evict_inode = f2fs_evict_inode,
2365 .put_super = f2fs_put_super,
2366 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2367 .freeze_fs = f2fs_freeze,
2368 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2369 .statfs = f2fs_statfs,
696c018c 2370 .remount_fs = f2fs_remount,
aff063e2
JK		 2371};
2372
643fa961 2373#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 2374static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2375{
2376 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2377 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2378 ctx, len, NULL);
2379}
2380
2381static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2382 void *fs_data)
2383{
b7c409de
SY		 2384 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2385
2386 /*
2387 * Encrypting the root directory is not allowed because fsck
2388 * expects lost+found directory to exist and remain unencrypted
2389 * if LOST_FOUND feature is enabled.
2390 *
2391 */
7beb01f7 2392 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2393 inode->i_ino == F2FS_ROOT_INO(sbi))
2394 return -EPERM;
2395
0b81d077
JK		 2396 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2397 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2398 ctx, len, fs_data, XATTR_CREATE);
2399}
2400
ff62af20
SY		 2401static bool f2fs_dummy_context(struct inode *inode)
2402{
2403 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2404}
2405
0eee17e3
EB		 2406static bool f2fs_has_stable_inodes(struct super_block *sb)
2407{
2408 return true;
2409}
2410
2411static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
2412 int *ino_bits_ret, int *lblk_bits_ret)
2413{
2414 *ino_bits_ret = 8 * sizeof(nid_t);
2415 *lblk_bits_ret = 8 * sizeof(block_t);
2416}
2417
6f69f0ed 2418static const struct fscrypt_operations f2fs_cryptops = {
0eee17e3
EB		 2419 .key_prefix = "f2fs:",
2420 .get_context = f2fs_get_context,
2421 .set_context = f2fs_set_context,
2422 .dummy_context = f2fs_dummy_context,
2423 .empty_dir = f2fs_empty_dir,
2424 .max_namelen = F2FS_NAME_LEN,
2425 .has_stable_inodes = f2fs_has_stable_inodes,
2426 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits,
0b81d077 2427};
0b81d077
JK		 2428#endif
2429
aff063e2
JK		 2430static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2431 u64 ino, u32 generation)
2432{
2433 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2434 struct inode *inode;
2435
4d57b86d 2436 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2437 return ERR_PTR(-ESTALE);
aff063e2
JK		 2438
2439 /*
2440 * f2fs_iget isn't quite right if the inode is currently unallocated!
2441 * However f2fs_iget currently does appropriate checks to handle stale
2442 * inodes so everything is OK.
2443 */
2444 inode = f2fs_iget(sb, ino);
2445 if (IS_ERR(inode))
2446 return ERR_CAST(inode);
6bacf52f 2447 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2448 /* we didn't find the right inode.. */
2449 iput(inode);
2450 return ERR_PTR(-ESTALE);
2451 }
2452 return inode;
2453}
2454
2455static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2456 int fh_len, int fh_type)
2457{
2458 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2459 f2fs_nfs_get_inode);
2460}
2461
2462static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2463 int fh_len, int fh_type)
2464{
2465 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2466 f2fs_nfs_get_inode);
2467}
2468
2469static const struct export_operations f2fs_export_ops = {
2470 .fh_to_dentry = f2fs_fh_to_dentry,
2471 .fh_to_parent = f2fs_fh_to_parent,
2472 .get_parent = f2fs_get_parent,
2473};
2474
e0afc4d6 2475static loff_t max_file_blocks(void)
aff063e2 2476{
7a2af766 2477 loff_t result = 0;
d02a6e61 2478 loff_t leaf_count = DEF_ADDRS_PER_BLOCK;
aff063e2 2479
7a2af766
CY		 2480 /*
2481 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2482 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2483 * space in inode.i_addr, it will be more safe to reassign
2484 * result as zero.
2485 */
2486
aff063e2
JK		 2487 /* two direct node blocks */
2488 result += (leaf_count * 2);
2489
2490 /* two indirect node blocks */
2491 leaf_count *= NIDS_PER_BLOCK;
2492 result += (leaf_count * 2);
2493
2494 /* one double indirect node block */
2495 leaf_count *= NIDS_PER_BLOCK;
2496 result += leaf_count;
2497
aff063e2
JK		 2498 return result;
2499}
2500
fd694733
JK		 2501static int __f2fs_commit_super(struct buffer_head *bh,
2502 struct f2fs_super_block *super)
2503{
2504 lock_buffer(bh);
2505 if (super)
2506 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2507 set_buffer_dirty(bh);
2508 unlock_buffer(bh);
2509
2510 /* it's rare case, we can do fua all the time */
3adc5fcb 2511 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2512}
2513
df728b0f 2514static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2515 struct buffer_head *bh)
9a59b62f 2516{
fd694733
JK		 2517 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2518 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2519 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2520 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2521 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2522 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2523 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2524 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2525 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2526 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2527 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2528 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2529 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2530 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2531 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2532 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2533 u64 main_end_blkaddr = main_blkaddr +
2534 (segment_count_main << log_blocks_per_seg);
2535 u64 seg_end_blkaddr = segment0_blkaddr +
2536 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2537
2538 if (segment0_blkaddr != cp_blkaddr) {
dcbb4c10
JP		 2539 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2540 segment0_blkaddr, cp_blkaddr);
9a59b62f
CY		 2541 return true;
2542 }
2543
2544 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2545 sit_blkaddr) {
dcbb4c10
JP		 2546 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2547 cp_blkaddr, sit_blkaddr,
2548 segment_count_ckpt << log_blocks_per_seg);
9a59b62f
CY		 2549 return true;
2550 }
2551
2552 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2553 nat_blkaddr) {
dcbb4c10
JP		 2554 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2555 sit_blkaddr, nat_blkaddr,
2556 segment_count_sit << log_blocks_per_seg);
9a59b62f
CY		 2557 return true;
2558 }
2559
2560 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2561 ssa_blkaddr) {
dcbb4c10
JP		 2562 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2563 nat_blkaddr, ssa_blkaddr,
2564 segment_count_nat << log_blocks_per_seg);
9a59b62f
CY		 2565 return true;
2566 }
2567
2568 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2569 main_blkaddr) {
dcbb4c10
JP		 2570 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2571 ssa_blkaddr, main_blkaddr,
2572 segment_count_ssa << log_blocks_per_seg);
9a59b62f
CY		 2573 return true;
2574 }
2575
fd694733 2576 if (main_end_blkaddr > seg_end_blkaddr) {
dcbb4c10
JP		 2577 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2578 main_blkaddr,
2579 segment0_blkaddr +
2580 (segment_count << log_blocks_per_seg),
2581 segment_count_main << log_blocks_per_seg);
9a59b62f 2582 return true;
fd694733
JK		 2583 } else if (main_end_blkaddr < seg_end_blkaddr) {
2584 int err = 0;
2585 char *res;
2586
2587 /* fix in-memory information all the time */
2588 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2589 segment0_blkaddr) >> log_blocks_per_seg);
2590
2591 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2592 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2593 res = "internally";
2594 } else {
2595 err = __f2fs_commit_super(bh, NULL);
2596 res = err ? "failed" : "done";
2597 }
dcbb4c10
JP		 2598 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2599 res, main_blkaddr,
2600 segment0_blkaddr +
2601 (segment_count << log_blocks_per_seg),
2602 segment_count_main << log_blocks_per_seg);
fd694733
JK		 2603 if (err)
2604 return true;
9a59b62f 2605 }
9a59b62f
CY		 2606 return false;
2607}
2608
df728b0f 2609static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2610 struct buffer_head *bh)
aff063e2 2611{
0cfe75c5
JK		 2612 block_t segment_count, segs_per_sec, secs_per_zone;
2613 block_t total_sections, blocks_per_seg;
fd694733
JK		 2614 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2615 (bh->b_data + F2FS_SUPER_OFFSET);
aff063e2 2616 unsigned int blocksize;
d440c52d
JZ		 2617 size_t crc_offset = 0;
2618 __u32 crc = 0;
2619
38fb6d0e
IZ		 2620 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2621 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2622 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2623 return -EINVAL;
2624 }
2625
d440c52d 2626 /* Check checksum_offset and crc in superblock */
7beb01f7 2627 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2628 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2629 if (crc_offset !=
2630 offsetof(struct f2fs_super_block, crc)) {
dcbb4c10
JP		 2631 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2632 crc_offset);
38fb6d0e 2633 return -EFSCORRUPTED;
d440c52d
JZ		 2634 }
2635 crc = le32_to_cpu(raw_super->crc);
2636 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
dcbb4c10 2637 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
38fb6d0e 2638 return -EFSCORRUPTED;
d440c52d
JZ		 2639 }
2640 }
aff063e2 2641
5c9b4692 2642 /* Currently, support only 4KB page cache size */
09cbfeaf 2643 if (F2FS_BLKSIZE != PAGE_SIZE) {
dcbb4c10
JP		 2644 f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
2645 PAGE_SIZE);
38fb6d0e 2646 return -EFSCORRUPTED;
5c9b4692 2647 }
2648
aff063e2
JK		 2649 /* Currently, support only 4KB block size */
2650 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2651 if (blocksize != F2FS_BLKSIZE) {
dcbb4c10
JP		 2652 f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
2653 blocksize);
38fb6d0e 2654 return -EFSCORRUPTED;
a07ef784 2655 }
5c9b4692 2656
9a59b62f
CY		 2657 /* check log blocks per segment */
2658 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
dcbb4c10
JP		 2659 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2660 le32_to_cpu(raw_super->log_blocks_per_seg));
38fb6d0e 2661 return -EFSCORRUPTED;
9a59b62f
CY		 2662 }
2663
55cf9cb6
CY		 2664 /* Currently, support 512/1024/2048/4096 bytes sector size */
2665 if (le32_to_cpu(raw_super->log_sectorsize) >
2666 F2FS_MAX_LOG_SECTOR_SIZE ||
2667 le32_to_cpu(raw_super->log_sectorsize) <
2668 F2FS_MIN_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2669 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2670 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2671 return -EFSCORRUPTED;
a07ef784 2672 }
55cf9cb6
CY		 2673 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2674 le32_to_cpu(raw_super->log_sectorsize) !=
2675 F2FS_MAX_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2676 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
2677 le32_to_cpu(raw_super->log_sectors_per_block),
2678 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2679 return -EFSCORRUPTED;
a07ef784 2680 }
9a59b62f 2681
0cfe75c5
JK		 2682 segment_count = le32_to_cpu(raw_super->segment_count);
2683 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2684 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2685 total_sections = le32_to_cpu(raw_super->section_count);
2686
2687 /* blocks_per_seg should be 512, given the above check */
2688 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2689
2690 if (segment_count > F2FS_MAX_SEGMENT ||
2691 segment_count < F2FS_MIN_SEGMENTS) {
dcbb4c10 2692 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
38fb6d0e 2693 return -EFSCORRUPTED;
0cfe75c5
JK		 2694 }
2695
2696 if (total_sections > segment_count ||
2697 total_sections < F2FS_MIN_SEGMENTS ||
2698 segs_per_sec > segment_count || !segs_per_sec) {
dcbb4c10
JP		 2699 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
2700 segment_count, total_sections, segs_per_sec);
38fb6d0e 2701 return -EFSCORRUPTED;
0cfe75c5
JK		 2702 }
2703
2704 if ((segment_count / segs_per_sec) < total_sections) {
dcbb4c10
JP		 2705 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
2706 segment_count, segs_per_sec, total_sections);
38fb6d0e 2707 return -EFSCORRUPTED;
0cfe75c5
JK		 2708 }
2709
88960068 2710 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
dcbb4c10
JP		 2711 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
2712 segment_count, le64_to_cpu(raw_super->block_count));
38fb6d0e 2713 return -EFSCORRUPTED;
0cfe75c5
JK		 2714 }
2715
9f701f6c
QS		 2716 if (RDEV(0).path[0]) {
2717 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
2718 int i = 1;
2719
2720 while (i < MAX_DEVICES && RDEV(i).path[0]) {
2721 dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
2722 i++;
2723 }
2724 if (segment_count != dev_seg_count) {
2725 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
2726 segment_count, dev_seg_count);
2727 return -EFSCORRUPTED;
2728 }
2729 }
2730
42bf546c 2731 if (secs_per_zone > total_sections || !secs_per_zone) {
dcbb4c10
JP		 2732 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
2733 secs_per_zone, total_sections);
38fb6d0e 2734 return -EFSCORRUPTED;
0cfe75c5
JK		 2735 }
2736 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2737 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2738 (le32_to_cpu(raw_super->extension_count) +
2739 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
dcbb4c10
JP		 2740 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
2741 le32_to_cpu(raw_super->extension_count),
2742 raw_super->hot_ext_count,
2743 F2FS_MAX_EXTENSION);
38fb6d0e 2744 return -EFSCORRUPTED;
0cfe75c5
JK		 2745 }
2746
2747 if (le32_to_cpu(raw_super->cp_payload) >
2748 (blocks_per_seg - F2FS_CP_PACKS)) {
dcbb4c10
JP		 2749 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
2750 le32_to_cpu(raw_super->cp_payload),
2751 blocks_per_seg - F2FS_CP_PACKS);
38fb6d0e 2752 return -EFSCORRUPTED;
0cfe75c5
JK		 2753 }
2754
9a59b62f
CY		 2755 /* check reserved ino info */
2756 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2757 le32_to_cpu(raw_super->meta_ino) != 2 ||
2758 le32_to_cpu(raw_super->root_ino) != 3) {
dcbb4c10
JP		 2759 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2760 le32_to_cpu(raw_super->node_ino),
2761 le32_to_cpu(raw_super->meta_ino),
2762 le32_to_cpu(raw_super->root_ino));
38fb6d0e 2763 return -EFSCORRUPTED;
9a59b62f
CY		 2764 }
2765
2766 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2767 if (sanity_check_area_boundary(sbi, bh))
38fb6d0e 2768 return -EFSCORRUPTED;
9a59b62f 2769
aff063e2
JK		 2770 return 0;
2771}
2772
4d57b86d 2773int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2774{
2775 unsigned int total, fsmeta;
577e3495
JK		 2776 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2777 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2778 unsigned int ovp_segments, reserved_segments;
15d3042a 2779 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2780 unsigned int sit_segs, nat_segs;
2781 unsigned int sit_bitmap_size, nat_bitmap_size;
2782 unsigned int log_blocks_per_seg;
9dc956b2 2783 unsigned int segment_count_main;
e494c2f9 2784 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 2785 block_t user_block_count, valid_user_blocks;
2786 block_t avail_node_count, valid_node_count;
042be0f8 2787 int i, j;
aff063e2
JK		 2788
2789 total = le32_to_cpu(raw_super->segment_count);
2790 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2791 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2792 fsmeta += sit_segs;
2793 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2794 fsmeta += nat_segs;
aff063e2
JK		 2795 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2796 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2797
6bacf52f 2798 if (unlikely(fsmeta >= total))
aff063e2 2799 return 1;
577e3495 2800
2040fce8
JK		 2801 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2802 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2803
2804 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2805 ovp_segments == 0 || reserved_segments == 0)) {
dcbb4c10 2806 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2040fce8
JK		 2807 return 1;
2808 }
2809
9dc956b2
CY		 2810 user_block_count = le64_to_cpu(ckpt->user_block_count);
2811 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2812 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2813 if (!user_block_count || user_block_count >=
2814 segment_count_main << log_blocks_per_seg) {
dcbb4c10
JP		 2815 f2fs_err(sbi, "Wrong user_block_count: %u",
2816 user_block_count);
9dc956b2
CY		 2817 return 1;
2818 }
2819
7b63f72f
CY		 2820 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2821 if (valid_user_blocks > user_block_count) {
dcbb4c10
JP		 2822 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
2823 valid_user_blocks, user_block_count);
7b63f72f
CY		 2824 return 1;
2825 }
2826
2827 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
27cae0bc 2828 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
7b63f72f 2829 if (valid_node_count > avail_node_count) {
dcbb4c10
JP		 2830 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
2831 valid_node_count, avail_node_count);
7b63f72f
CY		 2832 return 1;
2833 }
2834
15d3042a
JQ		 2835 main_segs = le32_to_cpu(raw_super->segment_count_main);
2836 blocks_per_seg = sbi->blocks_per_seg;
2837
2838 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2839 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2840 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2841 return 1;
042be0f8
CY		 2842 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2843 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2844 le32_to_cpu(ckpt->cur_node_segno[j])) {
dcbb4c10
JP		 2845 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
2846 i, j,
2847 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2848 return 1;
2849 }
2850 }
15d3042a
JQ		 2851 }
2852 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2853 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2854 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2855 return 1;
042be0f8
CY		 2856 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2857 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2858 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2859 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
2860 i, j,
2861 le32_to_cpu(ckpt->cur_data_segno[i]));
042be0f8
CY		 2862 return 1;
2863 }
2864 }
2865 }
2866 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1166c1f2 2867 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) {
042be0f8
CY		 2868 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2869 le32_to_cpu(ckpt->cur_data_segno[j])) {
1166c1f2 2870 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u",
dcbb4c10
JP		 2871 i, j,
2872 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2873 return 1;
2874 }
2875 }
15d3042a
JQ		 2876 }
2877
c77ec61c
CY		 2878 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2879 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2880
2881 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2882 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
dcbb4c10
JP		 2883 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
2884 sit_bitmap_size, nat_bitmap_size);
c77ec61c
CY		 2885 return 1;
2886 }
e494c2f9
CY		 2887
2888 cp_pack_start_sum = __start_sum_addr(sbi);
2889 cp_payload = __cp_payload(sbi);
2890 if (cp_pack_start_sum < cp_payload + 1 ||
2891 cp_pack_start_sum > blocks_per_seg - 1 -
2892 NR_CURSEG_TYPE) {
dcbb4c10
JP		 2893 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
2894 cp_pack_start_sum);
e494c2f9
CY		 2895 return 1;
2896 }
c77ec61c 2897
5dae2d39
CY		 2898 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
2899 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2d008835
CY		 2900 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
2901 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
2902 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
dcbb4c10 2903 le32_to_cpu(ckpt->checksum_offset));
5dae2d39
CY		 2904 return 1;
2905 }
2906
1e968fdf 2907 if (unlikely(f2fs_cp_error(sbi))) {
dcbb4c10 2908 f2fs_err(sbi, "A bug case: need to run fsck");
577e3495
JK		 2909 return 1;
2910 }
aff063e2
JK		 2911 return 0;
2912}
2913
2914static void init_sb_info(struct f2fs_sb_info *sbi)
2915{
2916 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 2917 int i;
aff063e2
JK		 2918
2919 sbi->log_sectors_per_block =
2920 le32_to_cpu(raw_super->log_sectors_per_block);
2921 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2922 sbi->blocksize = 1 << sbi->log_blocksize;
2923 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2924 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2925 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2926 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2927 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2928 sbi->total_node_count =
2929 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2930 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2931 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2932 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2933 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2934 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 2935 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2936 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 2937 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 2938 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 2939
ab9fa662 2940 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2941 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2942 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2943 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2944 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2945 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 2946 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2947 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 2948 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2949
35782b23
JK		 2950 for (i = 0; i < NR_COUNT_TYPE; i++)
2951 atomic_set(&sbi->nr_pages[i], 0);
2952
c29fd0c0
CY		 2953 for (i = 0; i < META; i++)
2954 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2955
2658e50d
JK		 2956 INIT_LIST_HEAD(&sbi->s_list);
2957 mutex_init(&sbi->umount_mutex);
107a805d 2958 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2959 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2960
2961 sbi->dirty_device = 0;
2962 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2963
846ae671 2964 init_rwsem(&sbi->sb_lock);
f5a53edc 2965 init_rwsem(&sbi->pin_sem);
aff063e2
JK		 2966}
2967
523be8a6
JK		 2968static int init_percpu_info(struct f2fs_sb_info *sbi)
2969{
35782b23 2970 int err;
41382ec4 2971
513c5f37
JK		 2972 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2973 if (err)
2974 return err;
2975
4a70e255 2976 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2977 GFP_KERNEL);
4a70e255
CY		 2978 if (err)
2979 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2980
2981 return err;
523be8a6
JK		 2982}
2983
178053e2 2984#ifdef CONFIG_BLK_DEV_ZONED
d4100351
CH		 2985static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
2986 void *data)
2987{
2988 struct f2fs_dev_info *dev = data;
2989
2990 if (zone->type != BLK_ZONE_TYPE_CONVENTIONAL)
2991 set_bit(idx, dev->blkz_seq);
2992 return 0;
2993}
2994
3c62be17 2995static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2996{
3c62be17 2997 struct block_device *bdev = FDEV(devi).bdev;
178053e2 2998 sector_t nr_sectors = bdev->bd_part->nr_sects;
d4100351 2999 int ret;
178053e2 3000
7beb01f7 3001 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 3002 return 0;
3003
3c62be17 3004 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 3005 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 3006 return -EINVAL;
f99e8648 3007 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 3008 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
3009 __ilog2_u32(sbi->blocks_per_blkz))
3010 return -EINVAL;
178053e2 3011 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 3012 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
3013 sbi->log_blocks_per_blkz;
f99e8648 3014 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 3015 FDEV(devi).nr_blkz++;
178053e2 3016
95175daf
DLM		 3017 FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
3018 BITS_TO_LONGS(FDEV(devi).nr_blkz)
3019 * sizeof(unsigned long),
3020 GFP_KERNEL);
3021 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 3022 return -ENOMEM;
3023
178053e2 3024 /* Get block zones type */
d4100351
CH		 3025 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
3026 &FDEV(devi));
3027 if (ret < 0)
3028 return ret;
178053e2 3029
d4100351 3030 return 0;
178053e2
DLM		 3031}
3032#endif
3033
9076a75f
GZ		 3034/*
3035 * Read f2fs raw super block.
2b39e907
SL		 3036 * Because we have two copies of super block, so read both of them
3037 * to get the first valid one. If any one of them is broken, we pass
3038 * them recovery flag back to the caller.
9076a75f 3039 */
df728b0f 3040static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 3041 struct f2fs_super_block **raw_super,
e8240f65 3042 int *valid_super_block, int *recovery)
14d7e9de 3043{
df728b0f 3044 struct super_block *sb = sbi->sb;
2b39e907 3045 int block;
e8240f65 3046 struct buffer_head *bh;
fd694733 3047 struct f2fs_super_block *super;
da554e48 3048 int err = 0;
14d7e9de 3049
b39f0de2
YH		 3050 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
3051 if (!super)
3052 return -ENOMEM;
2b39e907
SL		 3053
3054 for (block = 0; block < 2; block++) {
3055 bh = sb_bread(sb, block);
3056 if (!bh) {
dcbb4c10
JP		 3057 f2fs_err(sbi, "Unable to read %dth superblock",
3058 block + 1);
2b39e907 3059 err = -EIO;
ed352042 3060 *recovery = 1;
2b39e907
SL		 3061 continue;
3062 }
14d7e9de 3063
2b39e907 3064 /* sanity checking of raw super */
38fb6d0e
IZ		 3065 err = sanity_check_raw_super(sbi, bh);
3066 if (err) {
dcbb4c10
JP		 3067 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
3068 block + 1);
2b39e907 3069 brelse(bh);
ed352042 3070 *recovery = 1;
2b39e907
SL		 3071 continue;
3072 }
14d7e9de 3073
2b39e907 3074 if (!*raw_super) {
fd694733
JK		 3075 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
3076 sizeof(*super));
2b39e907
SL		 3077 *valid_super_block = block;
3078 *raw_super = super;
3079 }
3080 brelse(bh);
da554e48 3081 }
3082
da554e48 3083 /* No valid superblock */
2b39e907 3084 if (!*raw_super)
5222595d 3085 kvfree(super);
2b39e907
SL		 3086 else
3087 err = 0;
da554e48 3088
2b39e907 3089 return err;
14d7e9de 3090}
3091
fd694733 3092int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 3093{
5d909cdb 3094 struct buffer_head *bh;
d440c52d 3095 __u32 crc = 0;
26d815ad
JK		 3096 int err;
3097
df728b0f
JK		 3098 if ((recover && f2fs_readonly(sbi->sb)) ||
3099 bdev_read_only(sbi->sb->s_bdev)) {
3100 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 3101 return -EROFS;
df728b0f 3102 }
f2353d7b 3103
d440c52d 3104 /* we should update superblock crc here */
7beb01f7 3105 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 3106 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
3107 offsetof(struct f2fs_super_block, crc));
3108 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
3109 }
3110
fd694733 3111 /* write back-up superblock first */
0964fc1a 3112 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 3113 if (!bh)
3114 return -EIO;
fd694733 3115 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 3116 brelse(bh);
c5bda1c8
CY		 3117
3118 /* if we are in recovery path, skip writing valid superblock */
3119 if (recover || err)
5d909cdb 3120 return err;
26d815ad
JK		 3121
3122 /* write current valid superblock */
0964fc1a 3123 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 3124 if (!bh)
3125 return -EIO;
3126 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
3127 brelse(bh);
3128 return err;
26d815ad
JK		 3129}
3130
3c62be17
JK		 3131static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
3132{
3133 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 3134 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 3135 int i;
3136
7bb3a371
MS		 3137 /* Initialize single device information */
3138 if (!RDEV(0).path[0]) {
3139 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 3140 return 0;
7bb3a371
MS		 3141 max_devices = 1;
3142 }
3c62be17 3143
7bb3a371
MS		 3144 /*
3145 * Initialize multiple devices information, or single
3146 * zoned block device information.
3147 */
026f0507
KC		 3148 sbi->devs = f2fs_kzalloc(sbi,
3149 array_size(max_devices,
3150 sizeof(struct f2fs_dev_info)),
3151 GFP_KERNEL);
7bb3a371
MS		 3152 if (!sbi->devs)
3153 return -ENOMEM;
3c62be17 3154
7bb3a371 3155 for (i = 0; i < max_devices; i++) {
3c62be17 3156
7bb3a371
MS		 3157 if (i > 0 && !RDEV(i).path[0])
3158 break;
3159
3160 if (max_devices == 1) {
3161 /* Single zoned block device mount */
3162 FDEV(0).bdev =
3163 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 3164 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 3165 } else {
3166 /* Multi-device mount */
3167 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3168 FDEV(i).total_segments =
3169 le32_to_cpu(RDEV(i).total_segments);
3170 if (i == 0) {
3171 FDEV(i).start_blk = 0;
3172 FDEV(i).end_blk = FDEV(i).start_blk +
3173 (FDEV(i).total_segments <<
3174 sbi->log_blocks_per_seg) - 1 +
3175 le32_to_cpu(raw_super->segment0_blkaddr);
3176 } else {
3177 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3178 FDEV(i).end_blk = FDEV(i).start_blk +
3179 (FDEV(i).total_segments <<
3180 sbi->log_blocks_per_seg) - 1;
3181 }
3182 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 3183 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 3184 }
3c62be17
JK		 3185 if (IS_ERR(FDEV(i).bdev))
3186 return PTR_ERR(FDEV(i).bdev);
3187
3188 /* to release errored devices */
3189 sbi->s_ndevs = i + 1;
3190
3191#ifdef CONFIG_BLK_DEV_ZONED
3192 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3193 !f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3194 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3c62be17
JK		 3195 return -EINVAL;
3196 }
3197 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3198 if (init_blkz_info(sbi, i)) {
dcbb4c10 3199 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3c62be17
JK		 3200 return -EINVAL;
3201 }
7bb3a371
MS		 3202 if (max_devices == 1)
3203 break;
dcbb4c10
JP		 3204 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3205 i, FDEV(i).path,
3206 FDEV(i).total_segments,
3207 FDEV(i).start_blk, FDEV(i).end_blk,
3208 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3209 "Host-aware" : "Host-managed");
3c62be17
JK		 3210 continue;
3211 }
3212#endif
dcbb4c10
JP		 3213 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3214 i, FDEV(i).path,
3215 FDEV(i).total_segments,
3216 FDEV(i).start_blk, FDEV(i).end_blk);
3217 }
3218 f2fs_info(sbi,
3219 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3220 return 0;
3221}
3222
5aba5430
DR		 3223static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
3224{
3225#ifdef CONFIG_UNICODE
3226 if (f2fs_sb_has_casefold(sbi) && !sbi->s_encoding) {
3227 const struct f2fs_sb_encodings *encoding_info;
3228 struct unicode_map *encoding;
3229 __u16 encoding_flags;
3230
3231 if (f2fs_sb_has_encrypt(sbi)) {
3232 f2fs_err(sbi,
3233 "Can't mount with encoding and encryption");
3234 return -EINVAL;
3235 }
3236
3237 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
3238 &encoding_flags)) {
3239 f2fs_err(sbi,
3240 "Encoding requested by superblock is unknown");
3241 return -EINVAL;
3242 }
3243
3244 encoding = utf8_load(encoding_info->version);
3245 if (IS_ERR(encoding)) {
3246 f2fs_err(sbi,
3247 "can't mount with superblock charset: %s-%s "
3248 "not supported by the kernel. flags: 0x%x.",
3249 encoding_info->name, encoding_info->version,
3250 encoding_flags);
3251 return PTR_ERR(encoding);
3252 }
3253 f2fs_info(sbi, "Using encoding defined by superblock: "
3254 "%s-%s with flags 0x%hx", encoding_info->name,
3255 encoding_info->version?:"\b", encoding_flags);
3256
3257 sbi->s_encoding = encoding;
3258 sbi->s_encoding_flags = encoding_flags;
2c2eb7a3 3259 sbi->sb->s_d_op = &f2fs_dentry_ops;
5aba5430
DR		 3260 }
3261#else
3262 if (f2fs_sb_has_casefold(sbi)) {
3263 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
3264 return -EINVAL;
3265 }
3266#endif
3267 return 0;
3268}
3269
84b89e5d
JK		 3270static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3271{
3272 struct f2fs_sm_info *sm_i = SM_I(sbi);
3273
3274 /* adjust parameters according to the volume size */
3275 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3276 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3277 sm_i->dcc_info->discard_granularity = 1;
3278 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3279 }
4cac90d5
CY		 3280
3281 sbi->readdir_ra = 1;
84b89e5d
JK		 3282}
3283
aff063e2
JK		 3284static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3285{
3286 struct f2fs_sb_info *sbi;
da554e48 3287 struct f2fs_super_block *raw_super;
aff063e2 3288 struct inode *root;
99e3e858 3289 int err;
aa2c8c43 3290 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3291 char *options = NULL;
e8240f65 3292 int recovery, i, valid_super_block;
8f1dbbbb 3293 struct curseg_info *seg_i;
aa2c8c43 3294 int retry_cnt = 1;
aff063e2 3295
ed2e621a 3296try_onemore:
da554e48 3297 err = -EINVAL;
3298 raw_super = NULL;
e8240f65 3299 valid_super_block = -1;
da554e48 3300 recovery = 0;
3301
aff063e2
JK		 3302 /* allocate memory for f2fs-specific super block info */
3303 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3304 if (!sbi)
3305 return -ENOMEM;
3306
df728b0f
JK		 3307 sbi->sb = sb;
3308
43b6573b
KM		 3309 /* Load the checksum driver */
3310 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3311 if (IS_ERR(sbi->s_chksum_driver)) {
dcbb4c10 3312 f2fs_err(sbi, "Cannot load crc32 driver.");
43b6573b
KM		 3313 err = PTR_ERR(sbi->s_chksum_driver);
3314 sbi->s_chksum_driver = NULL;
3315 goto free_sbi;
3316 }
3317
ff9234ad 3318 /* set a block size */
6bacf52f 3319 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
dcbb4c10 3320 f2fs_err(sbi, "unable to set blocksize");
aff063e2 3321 goto free_sbi;
a07ef784 3322 }
aff063e2 3323
df728b0f 3324 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3325 &recovery);
9076a75f
GZ		 3326 if (err)
3327 goto free_sbi;
3328
5fb08372 3329 sb->s_fs_info = sbi;
52763a4b
JK		 3330 sbi->raw_super = raw_super;
3331
704956ec 3332 /* precompute checksum seed for metadata */
7beb01f7 3333 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3334 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3335 sizeof(raw_super->uuid));
3336
d1b959c8
DLM		 3337 /*
3338 * The BLKZONED feature indicates that the drive was formatted with
3339 * zone alignment optimization. This is optional for host-aware
3340 * devices, but mandatory for host-managed zoned block devices.
3341 */
3342#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3343 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3344 f2fs_err(sbi, "Zoned block device support is not enabled");
1727f317 3345 err = -EOPNOTSUPP;
d1b959c8
DLM		 3346 goto free_sb_buf;
3347 }
d1b959c8 3348#endif
498c5e9f 3349 default_options(sbi);
aff063e2 3350 /* parse mount options */
dabc4a5c
JK		 3351 options = kstrdup((const char *)data, GFP_KERNEL);
3352 if (data && !options) {
3353 err = -ENOMEM;
aff063e2 3354 goto free_sb_buf;
dabc4a5c
JK		 3355 }
3356
3357 err = parse_options(sb, options);
3358 if (err)
3359 goto free_options;
aff063e2 3360
e0afc4d6
CY		 3361 sbi->max_file_blocks = max_file_blocks();
3362 sb->s_maxbytes = sbi->max_file_blocks <<
3363 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3364 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3365
5aba5430
DR		 3366 err = f2fs_setup_casefold(sbi);
3367 if (err)
3368 goto free_options;
3369
0abd675e
CY		 3370#ifdef CONFIG_QUOTA
3371 sb->dq_op = &f2fs_quota_operations;
bc88ac96 3372 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3373 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3374
7beb01f7 3375 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3376 for (i = 0; i < MAXQUOTAS; i++) {
3377 if (f2fs_qf_ino(sbi->sb, i))
3378 sbi->nquota_files++;
3379 }
3380 }
0abd675e
CY		 3381#endif
3382
aff063e2 3383 sb->s_op = &f2fs_sops;
643fa961 3384#ifdef CONFIG_FS_ENCRYPTION
0b81d077 3385 sb->s_cop = &f2fs_cryptops;
95ae251f
EB		 3386#endif
3387#ifdef CONFIG_FS_VERITY
3388 sb->s_vop = &f2fs_verityops;
ffcc4182 3389#endif
aff063e2
JK		 3390 sb->s_xattr = f2fs_xattr_handlers;
3391 sb->s_export_op = &f2fs_export_ops;
3392 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3393 sb->s_time_gran = 1;
1751e8a6
LT		 3394 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3395 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3396 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3397 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3398
3399 /* init f2fs-specific super block info */
e8240f65 3400 sbi->valid_super_block = valid_super_block;
fb24fea7 3401 init_rwsem(&sbi->gc_lock);
853137ce 3402 mutex_init(&sbi->writepages);
aff063e2 3403 mutex_init(&sbi->cp_mutex);
04f0b2ea 3404 mutex_init(&sbi->resize_mutex);
b3582c68 3405 init_rwsem(&sbi->node_write);
59c9081b 3406 init_rwsem(&sbi->node_change);
315df839
JK		 3407
3408 /* disallow all the data/node/meta page writes */
3409 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3410 spin_lock_init(&sbi->stat_lock);
971767ca 3411
b0af6d49
CY		 3412 /* init iostat info */
3413 spin_lock_init(&sbi->iostat_lock);
3414 sbi->iostat_enable = false;
2bc4bea3 3415 sbi->iostat_period_ms = DEFAULT_IOSTAT_PERIOD_MS;
b0af6d49 3416
458e6197 3417 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3418 int n = (i == META) ? 1: NR_TEMP_TYPE;
3419 int j;
3420
c8606593
KC		 3421 sbi->write_io[i] =
3422 f2fs_kmalloc(sbi,
3423 array_size(n,
3424 sizeof(struct f2fs_bio_info)),
3425 GFP_KERNEL);
b63def91
CJ		 3426 if (!sbi->write_io[i]) {
3427 err = -ENOMEM;
0b2103e8 3428 goto free_bio_info;
b63def91 3429 }
a912b54d
JK		 3430
3431 for (j = HOT; j < n; j++) {
3432 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3433 sbi->write_io[i][j].sbi = sbi;
3434 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3435 spin_lock_init(&sbi->write_io[i][j].io_lock);
3436 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
0b20fcec
CY		 3437 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
3438 init_rwsem(&sbi->write_io[i][j].bio_list_lock);
a912b54d 3439 }
458e6197 3440 }
971767ca 3441
b873b798 3442 init_rwsem(&sbi->cp_rwsem);
db6ec53b 3443 init_rwsem(&sbi->quota_sem);
fb51b5ef 3444 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3445 init_sb_info(sbi);
3446
523be8a6
JK		 3447 err = init_percpu_info(sbi);
3448 if (err)
d7997e63 3449 goto free_bio_info;
523be8a6 3450
c72db71e 3451 if (F2FS_IO_ALIGNED(sbi)) {
0a595eba 3452 sbi->write_io_dummy =
a3ebfe4f 3453 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3454 if (!sbi->write_io_dummy) {
3455 err = -ENOMEM;
d7997e63 3456 goto free_percpu;
1727f317 3457 }
0a595eba
JK		 3458 }
3459
a999150f
CY		 3460 /* init per sbi slab cache */
3461 err = f2fs_init_xattr_caches(sbi);
3462 if (err)
3463 goto free_io_dummy;
3464
aff063e2
JK		 3465 /* get an inode for meta space */
3466 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3467 if (IS_ERR(sbi->meta_inode)) {
dcbb4c10 3468 f2fs_err(sbi, "Failed to read F2FS meta data inode");
aff063e2 3469 err = PTR_ERR(sbi->meta_inode);
a999150f 3470 goto free_xattr_cache;
aff063e2
JK		 3471 }
3472
4d57b86d 3473 err = f2fs_get_valid_checkpoint(sbi);
a07ef784 3474 if (err) {
dcbb4c10 3475 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
aff063e2 3476 goto free_meta_inode;
a07ef784 3477 }
aff063e2 3478
af033b2a
CY		 3479 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3480 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3481 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3482 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3483 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3484 }
af033b2a 3485
04f0b2ea
QS		 3486 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3487 set_sbi_flag(sbi, SBI_NEED_FSCK);
3488
3c62be17
JK		 3489 /* Initialize device list */
3490 err = f2fs_scan_devices(sbi);
3491 if (err) {
dcbb4c10 3492 f2fs_err(sbi, "Failed to find devices");
3c62be17
JK		 3493 goto free_devices;
3494 }
3495
4c8ff709
CY		 3496 err = f2fs_init_post_read_wq(sbi);
3497 if (err) {
3498 f2fs_err(sbi, "Failed to initialize post read workqueue");
3499 goto free_devices;
3500 }
3501
aff063e2
JK		 3502 sbi->total_valid_node_count =
3503 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3504 percpu_counter_set(&sbi->total_valid_inode_count,
3505 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3506 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3507 sbi->total_valid_block_count =
3508 le64_to_cpu(sbi->ckpt->valid_block_count);
3509 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3510 sbi->reserved_blocks = 0;
80d42145 3511 sbi->current_reserved_blocks = 0;
7e65be49 3512 limit_reserve_root(sbi);
41382ec4 3513
c227f912
CY		 3514 for (i = 0; i < NR_INODE_TYPE; i++) {
3515 INIT_LIST_HEAD(&sbi->inode_list[i]);
3516 spin_lock_init(&sbi->inode_lock[i]);
3517 }
040d2bb3 3518 mutex_init(&sbi->flush_lock);
aff063e2 3519
4d57b86d 3520 f2fs_init_extent_cache_info(sbi);
1dcc336b 3521
4d57b86d 3522 f2fs_init_ino_entry_info(sbi);
aff063e2 3523
50fa53ec
CY		 3524 f2fs_init_fsync_node_info(sbi);
3525
aff063e2 3526 /* setup f2fs internal modules */
4d57b86d 3527 err = f2fs_build_segment_manager(sbi);
a07ef784 3528 if (err) {
dcbb4c10
JP		 3529 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3530 err);
aff063e2 3531 goto free_sm;
a07ef784 3532 }
4d57b86d 3533 err = f2fs_build_node_manager(sbi);
a07ef784 3534 if (err) {
dcbb4c10
JP		 3535 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3536 err);
aff063e2 3537 goto free_nm;
a07ef784 3538 }
aff063e2 3539
8f1dbbbb
SL		 3540 /* For write statistics */
3541 if (sb->s_bdev->bd_part)
3542 sbi->sectors_written_start =
dbae2c55
MC		 3543 (u64)part_stat_read(sb->s_bdev->bd_part,
3544 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3545
3546 /* Read accumulated write IO statistics if exists */
3547 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3548 if (__exist_node_summaries(sbi))
3549 sbi->kbytes_written =
b2dde6fc 3550 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3551
4d57b86d 3552 f2fs_build_gc_manager(sbi);
aff063e2 3553
60aa4d55
ST		 3554 err = f2fs_build_stats(sbi);
3555 if (err)
3556 goto free_nm;
3557
aff063e2
JK		 3558 /* get an inode for node space */
3559 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3560 if (IS_ERR(sbi->node_inode)) {
dcbb4c10 3561 f2fs_err(sbi, "Failed to read node inode");
aff063e2 3562 err = PTR_ERR(sbi->node_inode);
60aa4d55 3563 goto free_stats;
aff063e2
JK		 3564 }
3565
aff063e2
JK		 3566 /* read root inode and dentry */
3567 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3568 if (IS_ERR(root)) {
dcbb4c10 3569 f2fs_err(sbi, "Failed to read root inode");
aff063e2 3570 err = PTR_ERR(root);
60aa4d55 3571 goto free_node_inode;
aff063e2 3572 }
bcbfbd60
CY		 3573 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3574 !root->i_size || !root->i_nlink) {
9d847950 3575 iput(root);
8f99a946 3576 err = -EINVAL;
60aa4d55 3577 goto free_node_inode;
8f99a946 3578 }
aff063e2
JK		 3579
3580 sb->s_root = d_make_root(root); /* allocate root dentry */
3581 if (!sb->s_root) {
3582 err = -ENOMEM;
025cdb16 3583 goto free_node_inode;
aff063e2
JK		 3584 }
3585
dc6b2055 3586 err = f2fs_register_sysfs(sbi);
b59d0bae 3587 if (err)
a398101a 3588 goto free_root_inode;
b59d0bae 3589
ea676733 3590#ifdef CONFIG_QUOTA
76cf05d7 3591 /* Enable quota usage during mount */
7beb01f7 3592 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3593 err = f2fs_enable_quotas(sb);
730746ce 3594 if (err)
dcbb4c10 3595 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
ea676733
JK		 3596 }
3597#endif
7a88ddb5 3598 /* if there are any orphan inodes, free them */
4d57b86d 3599 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3600 if (err)
ea676733 3601 goto free_meta;
4b2414d0 3602
4354994f 3603 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3604 goto reset_checkpoint;
4354994f 3605
6437d1b0 3606 /* recover fsynced data */
a9117eca
CY		 3607 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) &&
3608 !test_opt(sbi, NORECOVERY)) {
081d78c2
JK		 3609 /*
3610 * mount should be failed, when device has readonly mode, and
3611 * previous checkpoint was not done by clean system shutdown.
3612 */
b61af314
CY		 3613 if (f2fs_hw_is_readonly(sbi)) {
3614 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3615 err = -EROFS;
dcbb4c10 3616 f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
b61af314
CY		 3617 goto free_meta;
3618 }
dcbb4c10 3619 f2fs_info(sbi, "write access unavailable, skipping recovery");
b61af314 3620 goto reset_checkpoint;
081d78c2 3621 }
2adc3505
CY		 3622
3623 if (need_fsck)
3624 set_sbi_flag(sbi, SBI_NEED_FSCK);
3625
aa2c8c43
CY		 3626 if (skip_recovery)
3627 goto reset_checkpoint;
a468f0ef 3628
4d57b86d 3629 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3630 if (err < 0) {
aa2c8c43
CY		 3631 if (err != -ENOMEM)
3632 skip_recovery = true;
2adc3505 3633 need_fsck = true;
dcbb4c10
JP		 3634 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3635 err);
4b2414d0 3636 goto free_meta;
ed2e621a 3637 }
6781eabb 3638 } else {
4d57b86d 3639 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3640
3641 if (!f2fs_readonly(sb) && err > 0) {
3642 err = -EINVAL;
dcbb4c10 3643 f2fs_err(sbi, "Need to recover fsync data");
ea676733 3644 goto free_meta;
6781eabb 3645 }
6437d1b0 3646 }
d508c94e
SK		 3647
3648 /*
3649 * If the f2fs is not readonly and fsync data recovery succeeds,
3650 * check zoned block devices' write pointer consistency.
3651 */
3652 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
3653 err = f2fs_check_write_pointer(sbi);
3654 if (err)
3655 goto free_meta;
3656 }
3657
aa2c8c43 3658reset_checkpoint:
4d57b86d 3659 /* f2fs_recover_fsync_data() cleared this already */
315df839 3660 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3661
4354994f
DR		 3662 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3663 err = f2fs_disable_checkpoint(sbi);
3664 if (err)
812a9597 3665 goto sync_free_meta;
4354994f
DR		 3666 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3667 f2fs_enable_checkpoint(sbi);
3668 }
3669
6437d1b0
JK		 3670 /*
3671 * If filesystem is not mounted as read-only then
3672 * do start the gc_thread.
3673 */
bbbc34fd 3674 if (F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF && !f2fs_readonly(sb)) {
6437d1b0 3675 /* After POR, we can run background GC thread.*/
4d57b86d 3676 err = f2fs_start_gc_thread(sbi);
6437d1b0 3677 if (err)
812a9597 3678 goto sync_free_meta;
6437d1b0 3679 }
5222595d 3680 kvfree(options);
da554e48 3681
3682 /* recover broken superblock */
f2353d7b 3683 if (recovery) {
41214b3c 3684 err = f2fs_commit_super(sbi, true);
dcbb4c10
JP		 3685 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
3686 sbi->valid_super_block ? 1 : 2, err);
da554e48 3687 }
3688
bae01eda
CY		 3689 f2fs_join_shrinker(sbi);
3690
84b89e5d
JK		 3691 f2fs_tuning_parameters(sbi);
3692
dcbb4c10
JP		 3693 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
3694 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3695 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3696 f2fs_update_time(sbi, REQ_TIME);
db610a64 3697 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3698 return 0;
6437d1b0 3699
812a9597
JK		 3700sync_free_meta:
3701 /* safe to flush all the data */
3702 sync_filesystem(sbi->sb);
aa2c8c43 3703 retry_cnt = 0;
812a9597 3704
4b2414d0 3705free_meta:
ea676733 3706#ifdef CONFIG_QUOTA
26b5a079 3707 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3708 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3709 f2fs_quota_off_umount(sbi->sb);
3710#endif
4b2414d0 3711 /*
4d57b86d 3712 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3713 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3714 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3715 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3716 */
3717 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3718 /* evict some inodes being cached by GC */
3719 evict_inodes(sb);
dc6b2055 3720 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3721free_root_inode:
3722 dput(sb->s_root);
3723 sb->s_root = NULL;
3724free_node_inode:
4d57b86d 3725 f2fs_release_ino_entry(sbi, true);
bae01eda 3726 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3727 iput(sbi->node_inode);
7c77bf7d 3728 sbi->node_inode = NULL;
60aa4d55
ST		 3729free_stats:
3730 f2fs_destroy_stats(sbi);
aff063e2 3731free_nm:
4d57b86d 3732 f2fs_destroy_node_manager(sbi);
aff063e2 3733free_sm:
4d57b86d 3734 f2fs_destroy_segment_manager(sbi);
4c8ff709 3735 f2fs_destroy_post_read_wq(sbi);
3c62be17
JK		 3736free_devices:
3737 destroy_device_list(sbi);
5222595d 3738 kvfree(sbi->ckpt);
aff063e2
JK		 3739free_meta_inode:
3740 make_bad_inode(sbi->meta_inode);
3741 iput(sbi->meta_inode);
7c77bf7d 3742 sbi->meta_inode = NULL;
a999150f
CY		 3743free_xattr_cache:
3744 f2fs_destroy_xattr_caches(sbi);
0a595eba
JK		 3745free_io_dummy:
3746 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3747free_percpu:
3748 destroy_percpu_info(sbi);
3749free_bio_info:
a912b54d 3750 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3751 kvfree(sbi->write_io[i]);
5aba5430
DR		 3752
3753#ifdef CONFIG_UNICODE
3754 utf8_unload(sbi->s_encoding);
3755#endif
d7997e63 3756free_options:
4b2414d0
CY		 3757#ifdef CONFIG_QUOTA
3758 for (i = 0; i < MAXQUOTAS; i++)
5222595d 3759 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3760#endif
5222595d 3761 kvfree(options);
aff063e2 3762free_sb_buf:
5222595d 3763 kvfree(raw_super);
aff063e2 3764free_sbi:
43b6573b
KM		 3765 if (sbi->s_chksum_driver)
3766 crypto_free_shash(sbi->s_chksum_driver);
5222595d 3767 kvfree(sbi);
ed2e621a
JK		 3768
3769 /* give only one another chance */
aa2c8c43
CY		 3770 if (retry_cnt > 0 && skip_recovery) {
3771 retry_cnt--;
ed2e621a
JK		 3772 shrink_dcache_sb(sb);
3773 goto try_onemore;
3774 }
aff063e2
JK		 3775 return err;
3776}
3777
3778static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3779 const char *dev_name, void *data)
3780{
3781 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3782}
3783
30a5537f
JK		 3784static void kill_f2fs_super(struct super_block *sb)
3785{
cce13252 3786 if (sb->s_root) {
1cb50f87
JK		 3787 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3788
3789 set_sbi_flag(sbi, SBI_IS_CLOSE);
3790 f2fs_stop_gc_thread(sbi);
3791 f2fs_stop_discard_thread(sbi);
3792
3793 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3794 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3795 struct cp_control cpc = {
3796 .reason = CP_UMOUNT,
3797 };
3798 f2fs_write_checkpoint(sbi, &cpc);
3799 }
1378752b
CY		 3800
3801 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3802 sb->s_flags &= ~SB_RDONLY;
cce13252 3803 }
30a5537f
JK		 3804 kill_block_super(sb);
3805}
3806
aff063e2
JK		 3807static struct file_system_type f2fs_fs_type = {
3808 .owner = THIS_MODULE,
3809 .name = "f2fs",
3810 .mount = f2fs_mount,
30a5537f 3811 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3812 .fs_flags = FS_REQUIRES_DEV,
3813};
7f78e035 3814MODULE_ALIAS_FS("f2fs");
aff063e2 3815
6e6093a8 3816static int __init init_inodecache(void)
aff063e2 3817{
5d097056
VD		 3818 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3819 sizeof(struct f2fs_inode_info), 0,
3820 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3821 if (!f2fs_inode_cachep)
aff063e2
JK		 3822 return -ENOMEM;
3823 return 0;
3824}
3825
3826static void destroy_inodecache(void)
3827{
3828 /*
3829 * Make sure all delayed rcu free inodes are flushed before we
3830 * destroy cache.
3831 */
3832 rcu_barrier();
3833 kmem_cache_destroy(f2fs_inode_cachep);
3834}
3835
3836static int __init init_f2fs_fs(void)
3837{
3838 int err;
3839
4071e67c
AP		 3840 if (PAGE_SIZE != F2FS_BLKSIZE) {
3841 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3842 PAGE_SIZE, F2FS_BLKSIZE);
3843 return -EINVAL;
3844 }
3845
c0508650
JK		 3846 f2fs_build_trace_ios();
3847
aff063e2
JK		 3848 err = init_inodecache();
3849 if (err)
3850 goto fail;
4d57b86d 3851 err = f2fs_create_node_manager_caches();
aff063e2 3852 if (err)
9890ff3f 3853 goto free_inodecache;
4d57b86d 3854 err = f2fs_create_segment_manager_caches();
aff063e2 3855 if (err)
9890ff3f 3856 goto free_node_manager_caches;
4d57b86d 3857 err = f2fs_create_checkpoint_caches();
aff063e2 3858 if (err)
06292073 3859 goto free_segment_manager_caches;
4d57b86d 3860 err = f2fs_create_extent_cache();
1dcc336b
CY		 3861 if (err)
3862 goto free_checkpoint_caches;
dc6b2055 3863 err = f2fs_init_sysfs();
a398101a 3864 if (err)
1dcc336b 3865 goto free_extent_cache;
2658e50d 3866 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3867 if (err)
a398101a 3868 goto free_sysfs;
2658e50d
JK		 3869 err = register_filesystem(&f2fs_fs_type);
3870 if (err)
3871 goto free_shrinker;
21acc07d 3872 f2fs_create_root_stats();
6dbb1796
EB		 3873 err = f2fs_init_post_read_processing();
3874 if (err)
3875 goto free_root_stats;
0b20fcec
CY		 3876 err = f2fs_init_bio_entry_cache();
3877 if (err)
3878 goto free_post_read;
f543805f
CY		 3879 err = f2fs_init_bioset();
3880 if (err)
3881 goto free_bio_enrty_cache;
5e6bbde9
CY		 3882 err = f2fs_init_compress_mempool();
3883 if (err)
3884 goto free_bioset;
9890ff3f 3885 return 0;
5e6bbde9
CY		 3886free_bioset:
3887 f2fs_destroy_bioset();
f543805f
CY		 3888free_bio_enrty_cache:
3889 f2fs_destroy_bio_entry_cache();
0b20fcec
CY		 3890free_post_read:
3891 f2fs_destroy_post_read_processing();
6dbb1796
EB		 3892free_root_stats:
3893 f2fs_destroy_root_stats();
787c7b8c 3894 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3895free_shrinker:
3896 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3897free_sysfs:
dc6b2055 3898 f2fs_exit_sysfs();
1dcc336b 3899free_extent_cache:
4d57b86d 3900 f2fs_destroy_extent_cache();
9890ff3f 3901free_checkpoint_caches:
4d57b86d 3902 f2fs_destroy_checkpoint_caches();
7fd9e544 3903free_segment_manager_caches:
4d57b86d 3904 f2fs_destroy_segment_manager_caches();
9890ff3f 3905free_node_manager_caches:
4d57b86d 3906 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3907free_inodecache:
3908 destroy_inodecache();
aff063e2
JK		 3909fail:
3910 return err;
3911}
3912
3913static void __exit exit_f2fs_fs(void)
3914{
5e6bbde9 3915 f2fs_destroy_compress_mempool();
f543805f 3916 f2fs_destroy_bioset();
0b20fcec 3917 f2fs_destroy_bio_entry_cache();
6dbb1796 3918 f2fs_destroy_post_read_processing();
4589d25d 3919 f2fs_destroy_root_stats();
aff063e2 3920 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3921 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3922 f2fs_exit_sysfs();
4d57b86d
CY		 3923 f2fs_destroy_extent_cache();
3924 f2fs_destroy_checkpoint_caches();
3925 f2fs_destroy_segment_manager_caches();
3926 f2fs_destroy_node_manager_caches();
aff063e2 3927 destroy_inodecache();
351f4fba 3928 f2fs_destroy_trace_ios();
aff063e2
JK		 3929}
3930
3931module_init(init_f2fs_fs)
3932module_exit(exit_f2fs_fs)
3933
3934MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3935MODULE_DESCRIPTION("Flash Friendly File System");
3936MODULE_LICENSE("GPL");
b4b9d34c 3937
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