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f2fs: fix to detect cp error in f2fs_setxattr()
[mirror_ubuntu-hirsute-kernel.git] / fs / f2fs / super.c
CommitLineData
7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
aff063e2
JK		 3 * fs/f2fs/super.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
aff063e2
JK		 7 */
8#include <linux/module.h>
9#include <linux/init.h>
10#include <linux/fs.h>
11#include <linux/statfs.h>
aff063e2
JK		 12#include <linux/buffer_head.h>
13#include <linux/backing-dev.h>
14#include <linux/kthread.h>
15#include <linux/parser.h>
16#include <linux/mount.h>
17#include <linux/seq_file.h>
5e176d54 18#include <linux/proc_fs.h>
aff063e2
JK		 19#include <linux/random.h>
20#include <linux/exportfs.h>
d3ee456d 21#include <linux/blkdev.h>
0abd675e 22#include <linux/quotaops.h>
aff063e2 23#include <linux/f2fs_fs.h>
b59d0bae 24#include <linux/sysfs.h>
4b2414d0 25#include <linux/quota.h>
aff063e2
JK		 26
27#include "f2fs.h"
28#include "node.h"
5ec4e49f 29#include "segment.h"
aff063e2 30#include "xattr.h"
b59d0bae 31#include "gc.h"
db9f7c1a 32#include "trace.h"
aff063e2 33
a2a4a7e4
NJ		 34#define CREATE_TRACE_POINTS
35#include <trace/events/f2fs.h>
36
aff063e2
JK		 37static struct kmem_cache *f2fs_inode_cachep;
38
73faec4d 39#ifdef CONFIG_F2FS_FAULT_INJECTION
2c63fead 40
19880e6e 41const char *f2fs_fault_name[FAULT_MAX] = {
2c63fead 42 [FAULT_KMALLOC] = "kmalloc",
628b3d14 43 [FAULT_KVMALLOC] = "kvmalloc",
c41f3cc3 44 [FAULT_PAGE_ALLOC] = "page alloc",
01eccef7 45 [FAULT_PAGE_GET] = "page get",
d62fe971 46 [FAULT_ALLOC_BIO] = "alloc bio",
cb78942b
JK		 47 [FAULT_ALLOC_NID] = "alloc nid",
48 [FAULT_ORPHAN] = "orphan",
49 [FAULT_BLOCK] = "no more block",
50 [FAULT_DIR_DEPTH] = "too big dir depth",
53aa6bbf 51 [FAULT_EVICT_INODE] = "evict_inode fail",
14b44d23 52 [FAULT_TRUNCATE] = "truncate fail",
6f5c2ed0 53 [FAULT_READ_IO] = "read IO error",
0f348028 54 [FAULT_CHECKPOINT] = "checkpoint error",
b83dcfe6 55 [FAULT_DISCARD] = "discard error",
6f5c2ed0 56 [FAULT_WRITE_IO] = "write IO error",
2c63fead 57};
08796897 58
d494500a
CY		 59void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
60 unsigned int type)
08796897 61{
63189b78 62 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1ecc0c5c 63
08796897 64 if (rate) {
1ecc0c5c
CY		 65 atomic_set(&ffi->inject_ops, 0);
66 ffi->inject_rate = rate;
08796897 67 }
d494500a
CY		 68
69 if (type)
70 ffi->inject_type = type;
71
72 if (!rate && !type)
73 memset(ffi, 0, sizeof(struct f2fs_fault_info));
08796897 74}
73faec4d
JK		 75#endif
76
2658e50d
JK		 77/* f2fs-wide shrinker description */
78static struct shrinker f2fs_shrinker_info = {
79 .scan_objects = f2fs_shrink_scan,
80 .count_objects = f2fs_shrink_count,
81 .seeks = DEFAULT_SEEKS,
82};
83
aff063e2 84enum {
696c018c 85 Opt_gc_background,
aff063e2 86 Opt_disable_roll_forward,
2d834bf9 87 Opt_norecovery,
aff063e2 88 Opt_discard,
64058be9 89 Opt_nodiscard,
aff063e2 90 Opt_noheap,
7a20b8a6 91 Opt_heap,
4058c511 92 Opt_user_xattr,
aff063e2 93 Opt_nouser_xattr,
4058c511 94 Opt_acl,
aff063e2
JK		 95 Opt_noacl,
96 Opt_active_logs,
97 Opt_disable_ext_identify,
444c580f 98 Opt_inline_xattr,
23cf7212 99 Opt_noinline_xattr,
6afc662e 100 Opt_inline_xattr_size,
8274de77 101 Opt_inline_data,
5efd3c6f 102 Opt_inline_dentry,
97c1794a 103 Opt_noinline_dentry,
6b4afdd7 104 Opt_flush_merge,
69e9e427 105 Opt_noflush_merge,
0f7b2abd 106 Opt_nobarrier,
d5053a34 107 Opt_fastboot,
89672159 108 Opt_extent_cache,
7daaea25 109 Opt_noextent_cache,
75342797 110 Opt_noinline_data,
343f40f0 111 Opt_data_flush,
7e65be49 112 Opt_reserve_root,
7c2e5963
JK		 113 Opt_resgid,
114 Opt_resuid,
36abef4e 115 Opt_mode,
ec91538d 116 Opt_io_size_bits,
73faec4d 117 Opt_fault_injection,
d494500a 118 Opt_fault_type,
6d94c74a
JK		 119 Opt_lazytime,
120 Opt_nolazytime,
4b2414d0
CY		 121 Opt_quota,
122 Opt_noquota,
0abd675e
CY		 123 Opt_usrquota,
124 Opt_grpquota,
5c57132e 125 Opt_prjquota,
4b2414d0
CY		 126 Opt_usrjquota,
127 Opt_grpjquota,
128 Opt_prjjquota,
129 Opt_offusrjquota,
130 Opt_offgrpjquota,
131 Opt_offprjjquota,
132 Opt_jqfmt_vfsold,
133 Opt_jqfmt_vfsv0,
134 Opt_jqfmt_vfsv1,
0cdd3195 135 Opt_whint,
07939627 136 Opt_alloc,
93cf93f1 137 Opt_fsync,
ff62af20 138 Opt_test_dummy_encryption,
4d3aed70
DR		 139 Opt_checkpoint_disable,
140 Opt_checkpoint_disable_cap,
141 Opt_checkpoint_disable_cap_perc,
142 Opt_checkpoint_enable,
aff063e2
JK		 143 Opt_err,
144};
145
146static match_table_t f2fs_tokens = {
696c018c 147 {Opt_gc_background, "background_gc=%s"},
aff063e2 148 {Opt_disable_roll_forward, "disable_roll_forward"},
2d834bf9 149 {Opt_norecovery, "norecovery"},
aff063e2 150 {Opt_discard, "discard"},
64058be9 151 {Opt_nodiscard, "nodiscard"},
aff063e2 152 {Opt_noheap, "no_heap"},
7a20b8a6 153 {Opt_heap, "heap"},
4058c511 154 {Opt_user_xattr, "user_xattr"},
aff063e2 155 {Opt_nouser_xattr, "nouser_xattr"},
4058c511 156 {Opt_acl, "acl"},
aff063e2
JK		 157 {Opt_noacl, "noacl"},
158 {Opt_active_logs, "active_logs=%u"},
159 {Opt_disable_ext_identify, "disable_ext_identify"},
444c580f 160 {Opt_inline_xattr, "inline_xattr"},
23cf7212 161 {Opt_noinline_xattr, "noinline_xattr"},
6afc662e 162 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
8274de77 163 {Opt_inline_data, "inline_data"},
5efd3c6f 164 {Opt_inline_dentry, "inline_dentry"},
97c1794a 165 {Opt_noinline_dentry, "noinline_dentry"},
6b4afdd7 166 {Opt_flush_merge, "flush_merge"},
69e9e427 167 {Opt_noflush_merge, "noflush_merge"},
0f7b2abd 168 {Opt_nobarrier, "nobarrier"},
d5053a34 169 {Opt_fastboot, "fastboot"},
89672159 170 {Opt_extent_cache, "extent_cache"},
7daaea25 171 {Opt_noextent_cache, "noextent_cache"},
75342797 172 {Opt_noinline_data, "noinline_data"},
343f40f0 173 {Opt_data_flush, "data_flush"},
7e65be49 174 {Opt_reserve_root, "reserve_root=%u"},
7c2e5963
JK		 175 {Opt_resgid, "resgid=%u"},
176 {Opt_resuid, "resuid=%u"},
36abef4e 177 {Opt_mode, "mode=%s"},
ec91538d 178 {Opt_io_size_bits, "io_bits=%u"},
73faec4d 179 {Opt_fault_injection, "fault_injection=%u"},
d494500a 180 {Opt_fault_type, "fault_type=%u"},
6d94c74a
JK		 181 {Opt_lazytime, "lazytime"},
182 {Opt_nolazytime, "nolazytime"},
4b2414d0
CY		 183 {Opt_quota, "quota"},
184 {Opt_noquota, "noquota"},
0abd675e
CY		 185 {Opt_usrquota, "usrquota"},
186 {Opt_grpquota, "grpquota"},
5c57132e 187 {Opt_prjquota, "prjquota"},
4b2414d0
CY		 188 {Opt_usrjquota, "usrjquota=%s"},
189 {Opt_grpjquota, "grpjquota=%s"},
190 {Opt_prjjquota, "prjjquota=%s"},
191 {Opt_offusrjquota, "usrjquota="},
192 {Opt_offgrpjquota, "grpjquota="},
193 {Opt_offprjjquota, "prjjquota="},
194 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
195 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
196 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
0cdd3195 197 {Opt_whint, "whint_mode=%s"},
07939627 198 {Opt_alloc, "alloc_mode=%s"},
93cf93f1 199 {Opt_fsync, "fsync_mode=%s"},
ff62af20 200 {Opt_test_dummy_encryption, "test_dummy_encryption"},
4d3aed70
DR		 201 {Opt_checkpoint_disable, "checkpoint=disable"},
202 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
203 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
204 {Opt_checkpoint_enable, "checkpoint=enable"},
aff063e2
JK		 205 {Opt_err, NULL},
206};
207
dcbb4c10 208void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
a07ef784
NJ		 209{
210 struct va_format vaf;
211 va_list args;
dcbb4c10 212 int level;
a07ef784
NJ		 213
214 va_start(args, fmt);
dcbb4c10
JP		 215
216 level = printk_get_level(fmt);
217 vaf.fmt = printk_skip_level(fmt);
a07ef784 218 vaf.va = &args;
dcbb4c10
JP		 219 printk("%c%cF2FS-fs (%s): %pV\n",
220 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf);
221
a07ef784
NJ		 222 va_end(args);
223}
224
7e65be49
JK		 225static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
226{
9a9aecaa
DR		 227 block_t limit = min((sbi->user_block_count << 1) / 1000,
228 sbi->user_block_count - sbi->reserved_blocks);
7e65be49
JK		 229
230 /* limit is 0.2% */
63189b78
CY		 231 if (test_opt(sbi, RESERVE_ROOT) &&
232 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
233 F2FS_OPTION(sbi).root_reserved_blocks = limit;
dcbb4c10
JP		 234 f2fs_info(sbi, "Reduce reserved blocks for root = %u",
235 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 236 }
7c2e5963 237 if (!test_opt(sbi, RESERVE_ROOT) &&
63189b78 238 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
7c2e5963 239 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
63189b78 240 !gid_eq(F2FS_OPTION(sbi).s_resgid,
7c2e5963 241 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
dcbb4c10
JP		 242 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
243 from_kuid_munged(&init_user_ns,
244 F2FS_OPTION(sbi).s_resuid),
245 from_kgid_munged(&init_user_ns,
246 F2FS_OPTION(sbi).s_resgid));
7e65be49
JK		 247}
248
aff063e2
JK		 249static void init_once(void *foo)
250{
251 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
252
aff063e2
JK		 253 inode_init_once(&fi->vfs_inode);
254}
255
4b2414d0
CY		 256#ifdef CONFIG_QUOTA
257static const char * const quotatypes[] = INITQFNAMES;
258#define QTYPE2NAME(t) (quotatypes[t])
259static int f2fs_set_qf_name(struct super_block *sb, int qtype,
260 substring_t *args)
261{
262 struct f2fs_sb_info *sbi = F2FS_SB(sb);
263 char *qname;
264 int ret = -EINVAL;
265
63189b78 266 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
dcbb4c10 267 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on");
4b2414d0
CY		 268 return -EINVAL;
269 }
7beb01f7 270 if (f2fs_sb_has_quota_ino(sbi)) {
dcbb4c10 271 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name");
ea676733
JK		 272 return 0;
273 }
274
4b2414d0
CY		 275 qname = match_strdup(args);
276 if (!qname) {
dcbb4c10 277 f2fs_err(sbi, "Not enough memory for storing quotafile name");
f365c6cc 278 return -ENOMEM;
4b2414d0 279 }
63189b78
CY		 280 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
281 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
4b2414d0
CY		 282 ret = 0;
283 else
dcbb4c10 284 f2fs_err(sbi, "%s quota file already specified",
4b2414d0
CY		 285 QTYPE2NAME(qtype));
286 goto errout;
287 }
288 if (strchr(qname, '/')) {
dcbb4c10 289 f2fs_err(sbi, "quotafile must be on filesystem root");
4b2414d0
CY		 290 goto errout;
291 }
63189b78 292 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
4b2414d0
CY		 293 set_opt(sbi, QUOTA);
294 return 0;
295errout:
5222595d 296 kvfree(qname);
4b2414d0
CY		 297 return ret;
298}
299
300static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
301{
302 struct f2fs_sb_info *sbi = F2FS_SB(sb);
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 }
5222595d 308 kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
63189b78 309 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
4b2414d0
CY		 310 return 0;
311}
312
313static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
314{
315 /*
316 * We do the test below only for project quotas. 'usrquota' and
317 * 'grpquota' mount options are allowed even without quota feature
318 * to support legacy quotas in quota files.
319 */
7beb01f7 320 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
dcbb4c10 321 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement.");
4b2414d0
CY		 322 return -1;
323 }
63189b78
CY		 324 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
325 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
326 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
327 if (test_opt(sbi, USRQUOTA) &&
328 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
4b2414d0
CY		 329 clear_opt(sbi, USRQUOTA);
330
63189b78
CY		 331 if (test_opt(sbi, GRPQUOTA) &&
332 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
4b2414d0
CY		 333 clear_opt(sbi, GRPQUOTA);
334
63189b78
CY		 335 if (test_opt(sbi, PRJQUOTA) &&
336 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4b2414d0
CY		 337 clear_opt(sbi, PRJQUOTA);
338
339 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
340 test_opt(sbi, PRJQUOTA)) {
dcbb4c10 341 f2fs_err(sbi, "old and new quota format mixing");
4b2414d0
CY		 342 return -1;
343 }
344
63189b78 345 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 346 f2fs_err(sbi, "journaled quota format not specified");
4b2414d0
CY		 347 return -1;
348 }
349 }
ea676733 350
7beb01f7 351 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
dcbb4c10 352 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt");
63189b78 353 F2FS_OPTION(sbi).s_jquota_fmt = 0;
ea676733 354 }
4b2414d0
CY		 355 return 0;
356}
357#endif
358
696c018c
NJ		 359static int parse_options(struct super_block *sb, char *options)
360{
361 struct f2fs_sb_info *sbi = F2FS_SB(sb);
362 substring_t args[MAX_OPT_ARGS];
363 char *p, *name;
364 int arg = 0;
7c2e5963
JK		 365 kuid_t uid;
366 kgid_t gid;
4b2414d0
CY		 367#ifdef CONFIG_QUOTA
368 int ret;
369#endif
696c018c
NJ		 370
371 if (!options)
372 return 0;
373
374 while ((p = strsep(&options, ",")) != NULL) {
375 int token;
376 if (!*p)
377 continue;
378 /*
379 * Initialize args struct so we know whether arg was
380 * found; some options take optional arguments.
381 */
382 args[0].to = args[0].from = NULL;
383 token = match_token(p, f2fs_tokens, args);
384
385 switch (token) {
386 case Opt_gc_background:
387 name = match_strdup(&args[0]);
388
389 if (!name)
390 return -ENOMEM;
6aefd93b 391 if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
696c018c 392 set_opt(sbi, BG_GC);
6aefd93b
JK		 393 clear_opt(sbi, FORCE_FG_GC);
394 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
696c018c 395 clear_opt(sbi, BG_GC);
6aefd93b
JK		 396 clear_opt(sbi, FORCE_FG_GC);
397 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
398 set_opt(sbi, BG_GC);
399 set_opt(sbi, FORCE_FG_GC);
400 } else {
5222595d 401 kvfree(name);
696c018c
NJ		 402 return -EINVAL;
403 }
5222595d 404 kvfree(name);
696c018c
NJ		 405 break;
406 case Opt_disable_roll_forward:
407 set_opt(sbi, DISABLE_ROLL_FORWARD);
408 break;
2d834bf9
JK		 409 case Opt_norecovery:
410 /* this option mounts f2fs with ro */
411 set_opt(sbi, DISABLE_ROLL_FORWARD);
412 if (!f2fs_readonly(sb))
413 return -EINVAL;
414 break;
696c018c 415 case Opt_discard:
7d20c8ab 416 set_opt(sbi, DISCARD);
696c018c 417 break;
64058be9 418 case Opt_nodiscard:
7beb01f7 419 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 420 f2fs_warn(sbi, "discard is required for zoned block devices");
96ba2dec
DLM		 421 return -EINVAL;
422 }
64058be9 423 clear_opt(sbi, DISCARD);
487df616 424 break;
696c018c
NJ		 425 case Opt_noheap:
426 set_opt(sbi, NOHEAP);
427 break;
7a20b8a6
JK		 428 case Opt_heap:
429 clear_opt(sbi, NOHEAP);
430 break;
696c018c 431#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 432 case Opt_user_xattr:
433 set_opt(sbi, XATTR_USER);
434 break;
696c018c
NJ		 435 case Opt_nouser_xattr:
436 clear_opt(sbi, XATTR_USER);
437 break;
444c580f
JK		 438 case Opt_inline_xattr:
439 set_opt(sbi, INLINE_XATTR);
440 break;
23cf7212
CY		 441 case Opt_noinline_xattr:
442 clear_opt(sbi, INLINE_XATTR);
443 break;
6afc662e
CY		 444 case Opt_inline_xattr_size:
445 if (args->from && match_int(args, &arg))
446 return -EINVAL;
447 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 448 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 449 break;
696c018c 450#else
4058c511 451 case Opt_user_xattr:
dcbb4c10 452 f2fs_info(sbi, "user_xattr options not supported");
4058c511 453 break;
696c018c 454 case Opt_nouser_xattr:
dcbb4c10 455 f2fs_info(sbi, "nouser_xattr options not supported");
696c018c 456 break;
444c580f 457 case Opt_inline_xattr:
dcbb4c10 458 f2fs_info(sbi, "inline_xattr options not supported");
444c580f 459 break;
23cf7212 460 case Opt_noinline_xattr:
dcbb4c10 461 f2fs_info(sbi, "noinline_xattr options not supported");
23cf7212 462 break;
696c018c
NJ		 463#endif
464#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 465 case Opt_acl:
466 set_opt(sbi, POSIX_ACL);
467 break;
696c018c
NJ		 468 case Opt_noacl:
469 clear_opt(sbi, POSIX_ACL);
470 break;
471#else
4058c511 472 case Opt_acl:
dcbb4c10 473 f2fs_info(sbi, "acl options not supported");
4058c511 474 break;
696c018c 475 case Opt_noacl:
dcbb4c10 476 f2fs_info(sbi, "noacl options not supported");
696c018c
NJ		 477 break;
478#endif
479 case Opt_active_logs:
480 if (args->from && match_int(args, &arg))
481 return -EINVAL;
482 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
483 return -EINVAL;
63189b78 484 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 485 break;
486 case Opt_disable_ext_identify:
487 set_opt(sbi, DISABLE_EXT_IDENTIFY);
488 break;
8274de77
HL		 489 case Opt_inline_data:
490 set_opt(sbi, INLINE_DATA);
491 break;
5efd3c6f
CY		 492 case Opt_inline_dentry:
493 set_opt(sbi, INLINE_DENTRY);
494 break;
97c1794a
CY		 495 case Opt_noinline_dentry:
496 clear_opt(sbi, INLINE_DENTRY);
497 break;
6b4afdd7
JK		 498 case Opt_flush_merge:
499 set_opt(sbi, FLUSH_MERGE);
500 break;
69e9e427
JK		 501 case Opt_noflush_merge:
502 clear_opt(sbi, FLUSH_MERGE);
503 break;
0f7b2abd
JK		 504 case Opt_nobarrier:
505 set_opt(sbi, NOBARRIER);
506 break;
d5053a34
JK		 507 case Opt_fastboot:
508 set_opt(sbi, FASTBOOT);
509 break;
89672159
CY		 510 case Opt_extent_cache:
511 set_opt(sbi, EXTENT_CACHE);
512 break;
7daaea25
JK		 513 case Opt_noextent_cache:
514 clear_opt(sbi, EXTENT_CACHE);
515 break;
75342797
WL		 516 case Opt_noinline_data:
517 clear_opt(sbi, INLINE_DATA);
518 break;
343f40f0
CY		 519 case Opt_data_flush:
520 set_opt(sbi, DATA_FLUSH);
521 break;
7e65be49
JK		 522 case Opt_reserve_root:
523 if (args->from && match_int(args, &arg))
524 return -EINVAL;
525 if (test_opt(sbi, RESERVE_ROOT)) {
dcbb4c10
JP		 526 f2fs_info(sbi, "Preserve previous reserve_root=%u",
527 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 528 } else {
63189b78 529 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 530 set_opt(sbi, RESERVE_ROOT);
531 }
532 break;
7c2e5963
JK		 533 case Opt_resuid:
534 if (args->from && match_int(args, &arg))
535 return -EINVAL;
536 uid = make_kuid(current_user_ns(), arg);
537 if (!uid_valid(uid)) {
dcbb4c10 538 f2fs_err(sbi, "Invalid uid value %d", arg);
7c2e5963
JK		 539 return -EINVAL;
540 }
63189b78 541 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 542 break;
543 case Opt_resgid:
544 if (args->from && match_int(args, &arg))
545 return -EINVAL;
546 gid = make_kgid(current_user_ns(), arg);
547 if (!gid_valid(gid)) {
dcbb4c10 548 f2fs_err(sbi, "Invalid gid value %d", arg);
7c2e5963
JK		 549 return -EINVAL;
550 }
63189b78 551 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 552 break;
36abef4e
JK		 553 case Opt_mode:
554 name = match_strdup(&args[0]);
555
556 if (!name)
557 return -ENOMEM;
558 if (strlen(name) == 8 &&
559 !strncmp(name, "adaptive", 8)) {
7beb01f7 560 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 561 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature");
5222595d 562 kvfree(name);
3adc57e9
DLM		 563 return -EINVAL;
564 }
52763a4b 565 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
36abef4e
JK		 566 } else if (strlen(name) == 3 &&
567 !strncmp(name, "lfs", 3)) {
52763a4b 568 set_opt_mode(sbi, F2FS_MOUNT_LFS);
36abef4e 569 } else {
5222595d 570 kvfree(name);
36abef4e
JK		 571 return -EINVAL;
572 }
5222595d 573 kvfree(name);
36abef4e 574 break;
ec91538d
JK		 575 case Opt_io_size_bits:
576 if (args->from && match_int(args, &arg))
577 return -EINVAL;
6d52e135 578 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
dcbb4c10
JP		 579 f2fs_warn(sbi, "Not support %d, larger than %d",
580 1 << arg, BIO_MAX_PAGES);
ec91538d
JK		 581 return -EINVAL;
582 }
63189b78 583 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 584 break;
4cb037ec 585#ifdef CONFIG_F2FS_FAULT_INJECTION
73faec4d
JK		 586 case Opt_fault_injection:
587 if (args->from && match_int(args, &arg))
588 return -EINVAL;
d494500a
CY		 589 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
590 set_opt(sbi, FAULT_INJECTION);
d494500a 591 break;
4cb037ec 592
d494500a
CY		 593 case Opt_fault_type:
594 if (args->from && match_int(args, &arg))
595 return -EINVAL;
d494500a 596 f2fs_build_fault_attr(sbi, 0, arg);
0cc0dec2 597 set_opt(sbi, FAULT_INJECTION);
4cb037ec 598 break;
73faec4d 599#else
4cb037ec 600 case Opt_fault_injection:
dcbb4c10 601 f2fs_info(sbi, "fault_injection options not supported");
73faec4d 602 break;
4cb037ec
CX		 603
604 case Opt_fault_type:
dcbb4c10 605 f2fs_info(sbi, "fault_type options not supported");
4cb037ec
CX		 606 break;
607#endif
6d94c74a 608 case Opt_lazytime:
1751e8a6 609 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 610 break;
611 case Opt_nolazytime:
1751e8a6 612 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 613 break;
0abd675e 614#ifdef CONFIG_QUOTA
4b2414d0 615 case Opt_quota:
0abd675e
CY		 616 case Opt_usrquota:
617 set_opt(sbi, USRQUOTA);
618 break;
619 case Opt_grpquota:
620 set_opt(sbi, GRPQUOTA);
621 break;
5c57132e
CY		 622 case Opt_prjquota:
623 set_opt(sbi, PRJQUOTA);
624 break;
4b2414d0
CY		 625 case Opt_usrjquota:
626 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
627 if (ret)
628 return ret;
629 break;
630 case Opt_grpjquota:
631 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
632 if (ret)
633 return ret;
634 break;
635 case Opt_prjjquota:
636 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
637 if (ret)
638 return ret;
639 break;
640 case Opt_offusrjquota:
641 ret = f2fs_clear_qf_name(sb, USRQUOTA);
642 if (ret)
643 return ret;
644 break;
645 case Opt_offgrpjquota:
646 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
647 if (ret)
648 return ret;
649 break;
650 case Opt_offprjjquota:
651 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
652 if (ret)
653 return ret;
654 break;
655 case Opt_jqfmt_vfsold:
63189b78 656 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 657 break;
658 case Opt_jqfmt_vfsv0:
63189b78 659 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 660 break;
661 case Opt_jqfmt_vfsv1:
63189b78 662 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 663 break;
664 case Opt_noquota:
665 clear_opt(sbi, QUOTA);
666 clear_opt(sbi, USRQUOTA);
667 clear_opt(sbi, GRPQUOTA);
668 clear_opt(sbi, PRJQUOTA);
669 break;
0abd675e 670#else
4b2414d0 671 case Opt_quota:
0abd675e
CY		 672 case Opt_usrquota:
673 case Opt_grpquota:
5c57132e 674 case Opt_prjquota:
4b2414d0
CY		 675 case Opt_usrjquota:
676 case Opt_grpjquota:
677 case Opt_prjjquota:
678 case Opt_offusrjquota:
679 case Opt_offgrpjquota:
680 case Opt_offprjjquota:
681 case Opt_jqfmt_vfsold:
682 case Opt_jqfmt_vfsv0:
683 case Opt_jqfmt_vfsv1:
684 case Opt_noquota:
dcbb4c10 685 f2fs_info(sbi, "quota operations not supported");
0abd675e
CY		 686 break;
687#endif
0cdd3195
HL		 688 case Opt_whint:
689 name = match_strdup(&args[0]);
690 if (!name)
691 return -ENOMEM;
692 if (strlen(name) == 10 &&
693 !strncmp(name, "user-based", 10)) {
63189b78 694 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
0cdd3195
HL		 695 } else if (strlen(name) == 3 &&
696 !strncmp(name, "off", 3)) {
63189b78 697 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
f2e703f9
HL		 698 } else if (strlen(name) == 8 &&
699 !strncmp(name, "fs-based", 8)) {
63189b78 700 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
0cdd3195 701 } else {
5222595d 702 kvfree(name);
0cdd3195
HL		 703 return -EINVAL;
704 }
5222595d 705 kvfree(name);
0cdd3195 706 break;
07939627
JK		 707 case Opt_alloc:
708 name = match_strdup(&args[0]);
709 if (!name)
710 return -ENOMEM;
711
712 if (strlen(name) == 7 &&
713 !strncmp(name, "default", 7)) {
63189b78 714 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
07939627
JK		 715 } else if (strlen(name) == 5 &&
716 !strncmp(name, "reuse", 5)) {
63189b78 717 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627 718 } else {
5222595d 719 kvfree(name);
07939627
JK		 720 return -EINVAL;
721 }
5222595d 722 kvfree(name);
07939627 723 break;
93cf93f1
JZ		 724 case Opt_fsync:
725 name = match_strdup(&args[0]);
726 if (!name)
727 return -ENOMEM;
728 if (strlen(name) == 5 &&
729 !strncmp(name, "posix", 5)) {
63189b78 730 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
93cf93f1
JZ		 731 } else if (strlen(name) == 6 &&
732 !strncmp(name, "strict", 6)) {
63189b78 733 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
d6290814
JK		 734 } else if (strlen(name) == 9 &&
735 !strncmp(name, "nobarrier", 9)) {
736 F2FS_OPTION(sbi).fsync_mode =
737 FSYNC_MODE_NOBARRIER;
93cf93f1 738 } else {
5222595d 739 kvfree(name);
93cf93f1
JZ		 740 return -EINVAL;
741 }
5222595d 742 kvfree(name);
93cf93f1 743 break;
ff62af20 744 case Opt_test_dummy_encryption:
643fa961 745#ifdef CONFIG_FS_ENCRYPTION
7beb01f7 746 if (!f2fs_sb_has_encrypt(sbi)) {
dcbb4c10 747 f2fs_err(sbi, "Encrypt feature is off");
ff62af20
SY		 748 return -EINVAL;
749 }
750
751 F2FS_OPTION(sbi).test_dummy_encryption = true;
dcbb4c10 752 f2fs_info(sbi, "Test dummy encryption mode enabled");
ff62af20 753#else
dcbb4c10 754 f2fs_info(sbi, "Test dummy encryption mount option ignored");
ff62af20
SY		 755#endif
756 break;
4d3aed70
DR		 757 case Opt_checkpoint_disable_cap_perc:
758 if (args->from && match_int(args, &arg))
4354994f 759 return -EINVAL;
4d3aed70
DR		 760 if (arg < 0 || arg > 100)
761 return -EINVAL;
762 if (arg == 100)
763 F2FS_OPTION(sbi).unusable_cap =
764 sbi->user_block_count;
765 else
766 F2FS_OPTION(sbi).unusable_cap =
767 (sbi->user_block_count / 100) * arg;
768 set_opt(sbi, DISABLE_CHECKPOINT);
769 break;
770 case Opt_checkpoint_disable_cap:
771 if (args->from && match_int(args, &arg))
772 return -EINVAL;
773 F2FS_OPTION(sbi).unusable_cap = arg;
774 set_opt(sbi, DISABLE_CHECKPOINT);
775 break;
776 case Opt_checkpoint_disable:
777 set_opt(sbi, DISABLE_CHECKPOINT);
778 break;
779 case Opt_checkpoint_enable:
780 clear_opt(sbi, DISABLE_CHECKPOINT);
4354994f 781 break;
696c018c 782 default:
dcbb4c10
JP		 783 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
784 p);
696c018c
NJ		 785 return -EINVAL;
786 }
787 }
4b2414d0
CY		 788#ifdef CONFIG_QUOTA
789 if (f2fs_check_quota_options(sbi))
790 return -EINVAL;
00960c2c 791#else
7beb01f7 792 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 793 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA");
00960c2c
SY		 794 return -EINVAL;
795 }
7beb01f7 796 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
dcbb4c10 797 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA");
4ddc1b28
CY		 798 return -EINVAL;
799 }
4b2414d0 800#endif
ec91538d
JK		 801
802 if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
dcbb4c10
JP		 803 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
804 F2FS_IO_SIZE_KB(sbi));
ec91538d
JK		 805 return -EINVAL;
806 }
6afc662e
CY		 807
808 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
70db5b04
JK		 809 int min_size, max_size;
810
7beb01f7
CY		 811 if (!f2fs_sb_has_extra_attr(sbi) ||
812 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
dcbb4c10 813 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off");
4d817ae0
CY		 814 return -EINVAL;
815 }
6afc662e 816 if (!test_opt(sbi, INLINE_XATTR)) {
dcbb4c10 817 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option");
6afc662e
CY		 818 return -EINVAL;
819 }
70db5b04
JK		 820
821 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
dd6c89b5 822 max_size = MAX_INLINE_XATTR_SIZE;
70db5b04
JK		 823
824 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
825 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
dcbb4c10
JP		 826 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d",
827 min_size, max_size);
6afc662e
CY		 828 return -EINVAL;
829 }
830 }
0cdd3195 831
4354994f 832 if (test_opt(sbi, DISABLE_CHECKPOINT) && test_opt(sbi, LFS)) {
dcbb4c10 833 f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
4354994f
DR		 834 return -EINVAL;
835 }
836
0cdd3195
HL		 837 /* Not pass down write hints if the number of active logs is lesser
838 * than NR_CURSEG_TYPE.
839 */
63189b78
CY		 840 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
841 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 842 return 0;
843}
844
aff063e2
JK		 845static struct inode *f2fs_alloc_inode(struct super_block *sb)
846{
847 struct f2fs_inode_info *fi;
848
a0acdfe0 849 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 850 if (!fi)
851 return NULL;
852
853 init_once((void *) fi);
854
434720fa 855 /* Initialize f2fs-specific inode info */
204706c7 856 atomic_set(&fi->dirty_pages, 0);
d928bfbf 857 init_rwsem(&fi->i_sem);
2710fd7e 858 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 859 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 860 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 861 INIT_LIST_HEAD(&fi->inmem_pages);
862 mutex_init(&fi->inmem_lock);
b2532c69
CY		 863 init_rwsem(&fi->i_gc_rwsem[READ]);
864 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 865 init_rwsem(&fi->i_mmap_sem);
27161f13 866 init_rwsem(&fi->i_xattr_sem);
aff063e2 867
ab9fa662
JK		 868 /* Will be used by directory only */
869 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 870
aff063e2
JK		 871 return &fi->vfs_inode;
872}
873
531ad7d5
JK		 874static int f2fs_drop_inode(struct inode *inode)
875{
a8933b6b 876 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
b8d96a30 877 int ret;
a8933b6b
CY		 878
879 /*
880 * during filesystem shutdown, if checkpoint is disabled,
881 * drop useless meta/node dirty pages.
882 */
883 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
884 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
885 inode->i_ino == F2FS_META_INO(sbi)) {
886 trace_f2fs_drop_inode(inode, 1);
887 return 1;
888 }
889 }
890
531ad7d5
JK		 891 /*
892 * This is to avoid a deadlock condition like below.
893 * writeback_single_inode(inode)
894 * - f2fs_write_data_page
895 * - f2fs_gc -> iput -> evict
896 * - inode_wait_for_writeback(inode)
897 */
0f18b462 898 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 899 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 900 /* to avoid evict_inode call simultaneously */
901 atomic_inc(&inode->i_count);
06e1bc05
JK		 902 spin_unlock(&inode->i_lock);
903
904 /* some remained atomic pages should discarded */
905 if (f2fs_is_atomic_file(inode))
4d57b86d 906 f2fs_drop_inmem_pages(inode);
06e1bc05 907
3e72f721
JK		 908 /* should remain fi->extent_tree for writepage */
909 f2fs_destroy_extent_node(inode);
910
06e1bc05 911 sb_start_intwrite(inode->i_sb);
fc9581c8 912 f2fs_i_size_write(inode, 0);
06e1bc05 913
a0770e13 914 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
915 inode, NULL, 0, DATA);
916 truncate_inode_pages_final(inode->i_mapping);
917
06e1bc05 918 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 919 f2fs_truncate(inode);
06e1bc05
JK		 920
921 sb_end_intwrite(inode->i_sb);
922
06e1bc05 923 spin_lock(&inode->i_lock);
3e72f721 924 atomic_dec(&inode->i_count);
06e1bc05 925 }
b8d96a30 926 trace_f2fs_drop_inode(inode, 0);
531ad7d5 927 return 0;
06e1bc05 928 }
b8d96a30
HP		 929 ret = generic_drop_inode(inode);
930 trace_f2fs_drop_inode(inode, ret);
931 return ret;
531ad7d5
JK		 932}
933
7c45729a 934int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 935{
0f18b462 936 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 937 int ret = 0;
0f18b462 938
0f18b462
JK		 939 spin_lock(&sbi->inode_lock[DIRTY_META]);
940 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 941 ret = 1;
942 } else {
943 set_inode_flag(inode, FI_DIRTY_INODE);
944 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 945 }
7c45729a
JK		 946 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
947 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 948 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 949 inc_page_count(sbi, F2FS_DIRTY_IMETA);
950 }
338bbfa0 951 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 952 return ret;
0f18b462
JK		 953}
954
955void f2fs_inode_synced(struct inode *inode)
956{
957 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
958
959 spin_lock(&sbi->inode_lock[DIRTY_META]);
960 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
961 spin_unlock(&sbi->inode_lock[DIRTY_META]);
962 return;
963 }
7c45729a
JK		 964 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
965 list_del_init(&F2FS_I(inode)->gdirty_list);
966 dec_page_count(sbi, F2FS_DIRTY_IMETA);
967 }
0f18b462 968 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 969 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 970 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 971 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 972}
973
b56ab837
JK		 974/*
975 * f2fs_dirty_inode() is called from __mark_inode_dirty()
976 *
977 * We should call set_dirty_inode to write the dirty inode through write_inode.
978 */
979static void f2fs_dirty_inode(struct inode *inode, int flags)
980{
981 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
982
983 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
984 inode->i_ino == F2FS_META_INO(sbi))
985 return;
986
987 if (flags == I_DIRTY_TIME)
988 return;
989
990 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
991 clear_inode_flag(inode, FI_AUTO_RECOVER);
992
7c45729a 993 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 994}
995
d01718a0 996static void f2fs_free_inode(struct inode *inode)
aff063e2 997{
2c58d548 998 fscrypt_free_inode(inode);
aff063e2
JK		 999 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1000}
1001
523be8a6
JK		 1002static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1003{
41382ec4 1004 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 1005 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 1006}
1007
3c62be17
JK		 1008static void destroy_device_list(struct f2fs_sb_info *sbi)
1009{
1010 int i;
1011
1012 for (i = 0; i < sbi->s_ndevs; i++) {
1013 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1014#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1015 kvfree(FDEV(i).blkz_seq);
3c62be17
JK		 1016#endif
1017 }
5222595d 1018 kvfree(sbi->devs);
3c62be17
JK		 1019}
1020
aff063e2
JK		 1021static void f2fs_put_super(struct super_block *sb)
1022{
1023 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1024 int i;
cf5c759f 1025 bool dropped;
aff063e2 1026
0abd675e 1027 f2fs_quota_off_umount(sb);
aff063e2 1028
2658e50d
JK		 1029 /* prevent remaining shrinker jobs */
1030 mutex_lock(&sbi->umount_mutex);
1031
85dc2f2c
JK		 1032 /*
1033 * We don't need to do checkpoint when superblock is clean.
1034 * But, the previous checkpoint was not done by umount, it needs to do
1035 * clean checkpoint again.
1036 */
4354994f
DR		 1037 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1038 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1039 struct cp_control cpc = {
1040 .reason = CP_UMOUNT,
1041 };
4d57b86d 1042 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1043 }
aff063e2 1044
4e6a8d9b 1045 /* be sure to wait for any on-going discard commands */
03f2c02d 1046 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1047
7d20c8ab
CY		 1048 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1049 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1050 struct cp_control cpc = {
1051 .reason = CP_UMOUNT | CP_TRIMMED,
1052 };
4d57b86d 1053 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1054 }
1055
cf779cab
JK		 1056 /*
1057 * normally superblock is clean, so we need to release this.
1058 * In addition, EIO will skip do checkpoint, we need this as well.
1059 */
4d57b86d 1060 f2fs_release_ino_entry(sbi, true);
6f12ac25 1061
2658e50d
JK		 1062 f2fs_leave_shrinker(sbi);
1063 mutex_unlock(&sbi->umount_mutex);
1064
17c19120 1065 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1066 f2fs_flush_merged_writes(sbi);
17c19120 1067
50fa53ec
CY		 1068 f2fs_wait_on_all_pages_writeback(sbi);
1069
1070 f2fs_bug_on(sbi, sbi->fsync_node_num);
1071
aff063e2 1072 iput(sbi->node_inode);
7c77bf7d
JK		 1073 sbi->node_inode = NULL;
1074
aff063e2 1075 iput(sbi->meta_inode);
7c77bf7d 1076 sbi->meta_inode = NULL;
aff063e2 1077
60aa4d55
ST		 1078 /*
1079 * iput() can update stat information, if f2fs_write_checkpoint()
1080 * above failed with error.
1081 */
1082 f2fs_destroy_stats(sbi);
1083
aff063e2 1084 /* destroy f2fs internal modules */
4d57b86d
CY		 1085 f2fs_destroy_node_manager(sbi);
1086 f2fs_destroy_segment_manager(sbi);
aff063e2 1087
5222595d 1088 kvfree(sbi->ckpt);
a398101a 1089
dc6b2055 1090 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1091
1092 sb->s_fs_info = NULL;
43b6573b
KM		 1093 if (sbi->s_chksum_driver)
1094 crypto_free_shash(sbi->s_chksum_driver);
5222595d 1095 kvfree(sbi->raw_super);
523be8a6 1096
3c62be17 1097 destroy_device_list(sbi);
b6895e8f 1098 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1099#ifdef CONFIG_QUOTA
1100 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1101 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1102#endif
523be8a6 1103 destroy_percpu_info(sbi);
a912b54d 1104 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d
JK		 1105 kvfree(sbi->write_io[i]);
1106 kvfree(sbi);
aff063e2
JK		 1107}
1108
1109int f2fs_sync_fs(struct super_block *sb, int sync)
1110{
1111 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1112 int err = 0;
aff063e2 1113
1f227a3e
JK		 1114 if (unlikely(f2fs_cp_error(sbi)))
1115 return 0;
4354994f
DR		 1116 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1117 return 0;
1f227a3e 1118
a2a4a7e4
NJ		 1119 trace_f2fs_sync_fs(sb, sync);
1120
4b2414d0
CY		 1121 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1122 return -EAGAIN;
1123
b7473754 1124 if (sync) {
d5053a34
JK		 1125 struct cp_control cpc;
1126
119ee914
JK		 1127 cpc.reason = __get_cp_reason(sbi);
1128
b7473754 1129 mutex_lock(&sbi->gc_mutex);
4d57b86d 1130 err = f2fs_write_checkpoint(sbi, &cpc);
b7473754 1131 mutex_unlock(&sbi->gc_mutex);
b7473754 1132 }
05ca3632 1133 f2fs_trace_ios(NULL, 1);
aff063e2 1134
c34f42e2 1135 return err;
aff063e2
JK		 1136}
1137
d6212a5f
CL		 1138static int f2fs_freeze(struct super_block *sb)
1139{
77888c1e 1140 if (f2fs_readonly(sb))
d6212a5f
CL		 1141 return 0;
1142
b4b9d34c
JK		 1143 /* IO error happened before */
1144 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1145 return -EIO;
1146
1147 /* must be clean, since sync_filesystem() was already called */
1148 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1149 return -EINVAL;
1150 return 0;
d6212a5f
CL		 1151}
1152
1153static int f2fs_unfreeze(struct super_block *sb)
1154{
1155 return 0;
1156}
1157
ddc34e32
CY		 1158#ifdef CONFIG_QUOTA
1159static int f2fs_statfs_project(struct super_block *sb,
1160 kprojid_t projid, struct kstatfs *buf)
1161{
1162 struct kqid qid;
1163 struct dquot *dquot;
1164 u64 limit;
1165 u64 curblock;
1166
1167 qid = make_kqid_projid(projid);
1168 dquot = dqget(sb, qid);
1169 if (IS_ERR(dquot))
1170 return PTR_ERR(dquot);
955ac6e5 1171 spin_lock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1172
1173 limit = (dquot->dq_dqb.dqb_bsoftlimit ?
1174 dquot->dq_dqb.dqb_bsoftlimit :
1175 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
1176 if (limit && buf->f_blocks > limit) {
1177 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1178 buf->f_blocks = limit;
1179 buf->f_bfree = buf->f_bavail =
1180 (buf->f_blocks > curblock) ?
1181 (buf->f_blocks - curblock) : 0;
1182 }
1183
1184 limit = dquot->dq_dqb.dqb_isoftlimit ?
1185 dquot->dq_dqb.dqb_isoftlimit :
1186 dquot->dq_dqb.dqb_ihardlimit;
1187 if (limit && buf->f_files > limit) {
1188 buf->f_files = limit;
1189 buf->f_ffree =
1190 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1191 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1192 }
1193
955ac6e5 1194 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1195 dqput(dquot);
1196 return 0;
1197}
1198#endif
1199
aff063e2
JK		 1200static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1201{
1202 struct super_block *sb = dentry->d_sb;
1203 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1204 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1205 block_t total_count, user_block_count, start_count;
0cc091d0 1206 u64 avail_node_count;
aff063e2
JK		 1207
1208 total_count = le64_to_cpu(sbi->raw_super->block_count);
1209 user_block_count = sbi->user_block_count;
1210 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1211 buf->f_type = F2FS_SUPER_MAGIC;
1212 buf->f_bsize = sbi->blocksize;
1213
1214 buf->f_blocks = total_count - start_count;
f66c027e 1215 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1216 sbi->current_reserved_blocks;
c9c8ed50
CY		 1217
1218 spin_lock(&sbi->stat_lock);
4354994f
DR		 1219 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1220 buf->f_bfree = 0;
1221 else
1222 buf->f_bfree -= sbi->unusable_block_count;
c9c8ed50 1223 spin_unlock(&sbi->stat_lock);
4354994f 1224
63189b78
CY		 1225 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1226 buf->f_bavail = buf->f_bfree -
1227 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1228 else
1229 buf->f_bavail = 0;
aff063e2 1230
292c196a
CY		 1231 avail_node_count = sbi->total_node_count - sbi->nquota_files -
1232 F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1233
1234 if (avail_node_count > user_block_count) {
1235 buf->f_files = user_block_count;
1236 buf->f_ffree = buf->f_bavail;
1237 } else {
1238 buf->f_files = avail_node_count;
1239 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1240 buf->f_bavail);
1241 }
aff063e2 1242
5a20d339 1243 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1244 buf->f_fsid.val[0] = (u32)id;
1245 buf->f_fsid.val[1] = (u32)(id >> 32);
1246
ddc34e32
CY		 1247#ifdef CONFIG_QUOTA
1248 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1249 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1250 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1251 }
1252#endif
aff063e2
JK		 1253 return 0;
1254}
1255
4b2414d0
CY		 1256static inline void f2fs_show_quota_options(struct seq_file *seq,
1257 struct super_block *sb)
1258{
1259#ifdef CONFIG_QUOTA
1260 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1261
63189b78 1262 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1263 char *fmtname = "";
1264
63189b78 1265 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1266 case QFMT_VFS_OLD:
1267 fmtname = "vfsold";
1268 break;
1269 case QFMT_VFS_V0:
1270 fmtname = "vfsv0";
1271 break;
1272 case QFMT_VFS_V1:
1273 fmtname = "vfsv1";
1274 break;
1275 }
1276 seq_printf(seq, ",jqfmt=%s", fmtname);
1277 }
1278
63189b78
CY		 1279 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1280 seq_show_option(seq, "usrjquota",
1281 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1282
63189b78
CY		 1283 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1284 seq_show_option(seq, "grpjquota",
1285 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1286
63189b78
CY		 1287 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1288 seq_show_option(seq, "prjjquota",
1289 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1290#endif
1291}
1292
aff063e2
JK		 1293static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1294{
1295 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1296
6aefd93b
JK		 1297 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1298 if (test_opt(sbi, FORCE_FG_GC))
1299 seq_printf(seq, ",background_gc=%s", "sync");
1300 else
1301 seq_printf(seq, ",background_gc=%s", "on");
1302 } else {
696c018c 1303 seq_printf(seq, ",background_gc=%s", "off");
6aefd93b 1304 }
aff063e2
JK		 1305 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1306 seq_puts(seq, ",disable_roll_forward");
1307 if (test_opt(sbi, DISCARD))
1308 seq_puts(seq, ",discard");
81621f97
ST		 1309 else
1310 seq_puts(seq, ",nodiscard");
aff063e2 1311 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1312 seq_puts(seq, ",no_heap");
1313 else
1314 seq_puts(seq, ",heap");
aff063e2
JK		 1315#ifdef CONFIG_F2FS_FS_XATTR
1316 if (test_opt(sbi, XATTR_USER))
1317 seq_puts(seq, ",user_xattr");
1318 else
1319 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1320 if (test_opt(sbi, INLINE_XATTR))
1321 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1322 else
1323 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1324 if (test_opt(sbi, INLINE_XATTR_SIZE))
1325 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1326 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1327#endif
1328#ifdef CONFIG_F2FS_FS_POSIX_ACL
1329 if (test_opt(sbi, POSIX_ACL))
1330 seq_puts(seq, ",acl");
1331 else
1332 seq_puts(seq, ",noacl");
1333#endif
1334 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1335 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1336 if (test_opt(sbi, INLINE_DATA))
1337 seq_puts(seq, ",inline_data");
75342797
WL		 1338 else
1339 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1340 if (test_opt(sbi, INLINE_DENTRY))
1341 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1342 else
1343 seq_puts(seq, ",noinline_dentry");
b270ad6f 1344 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1345 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1346 if (test_opt(sbi, NOBARRIER))
1347 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1348 if (test_opt(sbi, FASTBOOT))
1349 seq_puts(seq, ",fastboot");
89672159
CY		 1350 if (test_opt(sbi, EXTENT_CACHE))
1351 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1352 else
1353 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1354 if (test_opt(sbi, DATA_FLUSH))
1355 seq_puts(seq, ",data_flush");
36abef4e
JK		 1356
1357 seq_puts(seq, ",mode=");
1358 if (test_opt(sbi, ADAPTIVE))
1359 seq_puts(seq, "adaptive");
1360 else if (test_opt(sbi, LFS))
1361 seq_puts(seq, "lfs");
63189b78 1362 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1363 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1364 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1365 F2FS_OPTION(sbi).root_reserved_blocks,
1366 from_kuid_munged(&init_user_ns,
1367 F2FS_OPTION(sbi).s_resuid),
1368 from_kgid_munged(&init_user_ns,
1369 F2FS_OPTION(sbi).s_resgid));
ec91538d 1370 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1371 seq_printf(seq, ",io_bits=%u",
1372 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1373#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1374 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1375 seq_printf(seq, ",fault_injection=%u",
63189b78 1376 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1377 seq_printf(seq, ",fault_type=%u",
1378 F2FS_OPTION(sbi).fault_info.inject_type);
1379 }
0cc0dec2 1380#endif
0abd675e 1381#ifdef CONFIG_QUOTA
4b2414d0
CY		 1382 if (test_opt(sbi, QUOTA))
1383 seq_puts(seq, ",quota");
0abd675e
CY		 1384 if (test_opt(sbi, USRQUOTA))
1385 seq_puts(seq, ",usrquota");
1386 if (test_opt(sbi, GRPQUOTA))
1387 seq_puts(seq, ",grpquota");
5c57132e
CY		 1388 if (test_opt(sbi, PRJQUOTA))
1389 seq_puts(seq, ",prjquota");
0cc0dec2 1390#endif
4b2414d0 1391 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1392 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1393 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1394 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1395 seq_printf(seq, ",whint_mode=%s", "fs-based");
643fa961 1396#ifdef CONFIG_FS_ENCRYPTION
ff62af20
SY		 1397 if (F2FS_OPTION(sbi).test_dummy_encryption)
1398 seq_puts(seq, ",test_dummy_encryption");
1399#endif
aff063e2 1400
63189b78 1401 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1402 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1403 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1404 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1405
4354994f 1406 if (test_opt(sbi, DISABLE_CHECKPOINT))
4d3aed70
DR		 1407 seq_printf(seq, ",checkpoint=disable:%u",
1408 F2FS_OPTION(sbi).unusable_cap);
63189b78 1409 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1410 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1411 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1412 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1413 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1414 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
aff063e2
JK		 1415 return 0;
1416}
1417
498c5e9f
YH		 1418static void default_options(struct f2fs_sb_info *sbi)
1419{
1420 /* init some FS parameters */
63189b78
CY		 1421 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1422 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1423 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1424 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1425 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1426 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1427 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1428 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
498c5e9f
YH		 1429
1430 set_opt(sbi, BG_GC);
39133a50 1431 set_opt(sbi, INLINE_XATTR);
498c5e9f 1432 set_opt(sbi, INLINE_DATA);
97c1794a 1433 set_opt(sbi, INLINE_DENTRY);
3e72f721 1434 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1435 set_opt(sbi, NOHEAP);
4354994f 1436 clear_opt(sbi, DISABLE_CHECKPOINT);
4d3aed70 1437 F2FS_OPTION(sbi).unusable_cap = 0;
1751e8a6 1438 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1439 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1440 set_opt(sbi, DISCARD);
7beb01f7 1441 if (f2fs_sb_has_blkzoned(sbi))
a39e5365
CY		 1442 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1443 else
52763a4b 1444 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
498c5e9f
YH		 1445
1446#ifdef CONFIG_F2FS_FS_XATTR
1447 set_opt(sbi, XATTR_USER);
1448#endif
1449#ifdef CONFIG_F2FS_FS_POSIX_ACL
1450 set_opt(sbi, POSIX_ACL);
1451#endif
36dbd328 1452
d494500a 1453 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1454}
1455
ea676733
JK		 1456#ifdef CONFIG_QUOTA
1457static int f2fs_enable_quotas(struct super_block *sb);
1458#endif
4354994f
DR		 1459
1460static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1461{
812a9597 1462 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1463 struct cp_control cpc;
812a9597
JK		 1464 int err = 0;
1465 int ret;
4d3aed70 1466 block_t unusable;
4354994f 1467
812a9597 1468 if (s_flags & SB_RDONLY) {
dcbb4c10 1469 f2fs_err(sbi, "checkpoint=disable on readonly fs");
812a9597
JK		 1470 return -EINVAL;
1471 }
4354994f
DR		 1472 sbi->sb->s_flags |= SB_ACTIVE;
1473
4354994f
DR		 1474 f2fs_update_time(sbi, DISABLE_TIME);
1475
1476 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
8f31b466 1477 mutex_lock(&sbi->gc_mutex);
4354994f 1478 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1479 if (err == -ENODATA) {
1480 err = 0;
4354994f 1481 break;
812a9597 1482 }
8f31b466 1483 if (err && err != -EAGAIN)
812a9597 1484 break;
4354994f 1485 }
4354994f 1486
812a9597
JK		 1487 ret = sync_filesystem(sbi->sb);
1488 if (ret || err) {
1489 err = ret ? ret: err;
1490 goto restore_flag;
1491 }
4354994f 1492
4d3aed70
DR		 1493 unusable = f2fs_get_unusable_blocks(sbi);
1494 if (f2fs_disable_cp_again(sbi, unusable)) {
812a9597
JK		 1495 err = -EAGAIN;
1496 goto restore_flag;
1497 }
4354994f
DR		 1498
1499 mutex_lock(&sbi->gc_mutex);
1500 cpc.reason = CP_PAUSE;
1501 set_sbi_flag(sbi, SBI_CP_DISABLED);
896285ad
CY		 1502 err = f2fs_write_checkpoint(sbi, &cpc);
1503 if (err)
1504 goto out_unlock;
4354994f 1505
c9c8ed50 1506 spin_lock(&sbi->stat_lock);
4d3aed70 1507 sbi->unusable_block_count = unusable;
c9c8ed50
CY		 1508 spin_unlock(&sbi->stat_lock);
1509
896285ad 1510out_unlock:
4354994f 1511 mutex_unlock(&sbi->gc_mutex);
812a9597
JK		 1512restore_flag:
1513 sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */
1514 return err;
4354994f
DR		 1515}
1516
1517static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1518{
1519 mutex_lock(&sbi->gc_mutex);
1520 f2fs_dirty_to_prefree(sbi);
1521
1522 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1523 set_sbi_flag(sbi, SBI_IS_DIRTY);
1524 mutex_unlock(&sbi->gc_mutex);
1525
1526 f2fs_sync_fs(sbi->sb, 1);
1527}
1528
696c018c
NJ		 1529static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1530{
1531 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1532 struct f2fs_mount_info org_mount_opt;
0abd675e 1533 unsigned long old_sb_flags;
63189b78 1534 int err;
876dc59e
GZ		 1535 bool need_restart_gc = false;
1536 bool need_stop_gc = false;
9cd81ce3 1537 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f 1538 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1f78adfa 1539 bool no_io_align = !F2FS_IO_ALIGNED(sbi);
4354994f 1540 bool checkpoint_changed;
4b2414d0 1541#ifdef CONFIG_QUOTA
4b2414d0
CY		 1542 int i, j;
1543#endif
696c018c
NJ		 1544
1545 /*
1546 * Save the old mount options in case we
1547 * need to restore them.
1548 */
1549 org_mount_opt = sbi->mount_opt;
0abd675e 1550 old_sb_flags = sb->s_flags;
696c018c 1551
4b2414d0 1552#ifdef CONFIG_QUOTA
63189b78 1553 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1554 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1555 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1556 org_mount_opt.s_qf_names[i] =
1557 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1558 GFP_KERNEL);
1559 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1560 for (j = 0; j < i; j++)
5222595d 1561 kvfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1562 return -ENOMEM;
1563 }
1564 } else {
63189b78 1565 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1566 }
1567 }
1568#endif
1569
df728b0f 1570 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1571 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f 1572 err = f2fs_commit_super(sbi, false);
dcbb4c10
JP		 1573 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1574 err);
df728b0f
JK		 1575 if (!err)
1576 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1577 }
1578
498c5e9f 1579 default_options(sbi);
26666c8a 1580
696c018c
NJ		 1581 /* parse mount options */
1582 err = parse_options(sb, data);
1583 if (err)
1584 goto restore_opts;
4354994f
DR		 1585 checkpoint_changed =
1586 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1587
1588 /*
1589 * Previous and new state of filesystem is RO,
876dc59e 1590 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1591 */
1751e8a6 1592 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1593 goto skip;
1594
ea676733 1595#ifdef CONFIG_QUOTA
1751e8a6 1596 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1597 err = dquot_suspend(sb, -1);
1598 if (err < 0)
1599 goto restore_opts;
4354994f 1600 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1601 /* dquot_resume needs RW */
1751e8a6 1602 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1603 if (sb_any_quota_suspended(sb)) {
1604 dquot_resume(sb, -1);
7beb01f7 1605 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1606 err = f2fs_enable_quotas(sb);
1607 if (err)
1608 goto restore_opts;
1609 }
0abd675e 1610 }
ea676733 1611#endif
9cd81ce3
CY		 1612 /* disallow enable/disable extent_cache dynamically */
1613 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1614 err = -EINVAL;
dcbb4c10 1615 f2fs_warn(sbi, "switch extent_cache option is not allowed");
9cd81ce3
CY		 1616 goto restore_opts;
1617 }
1618
1f78adfa
CY		 1619 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) {
1620 err = -EINVAL;
1621 f2fs_warn(sbi, "switch io_bits option is not allowed");
1622 goto restore_opts;
1623 }
1624
4354994f
DR		 1625 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1626 err = -EINVAL;
dcbb4c10 1627 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
4354994f
DR		 1628 goto restore_opts;
1629 }
1630
696c018c
NJ		 1631 /*
1632 * We stop the GC thread if FS is mounted as RO
1633 * or if background_gc = off is passed in mount
1634 * option. Also sync the filesystem.
1635 */
1751e8a6 1636 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
696c018c 1637 if (sbi->gc_thread) {
4d57b86d 1638 f2fs_stop_gc_thread(sbi);
876dc59e 1639 need_restart_gc = true;
696c018c 1640 }
aba291b3 1641 } else if (!sbi->gc_thread) {
4d57b86d 1642 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1643 if (err)
1644 goto restore_opts;
876dc59e
GZ		 1645 need_stop_gc = true;
1646 }
1647
63189b78
CY		 1648 if (*flags & SB_RDONLY ||
1649 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1650 writeback_inodes_sb(sb, WB_REASON_SYNC);
1651 sync_inodes_sb(sb);
1652
1653 set_sbi_flag(sbi, SBI_IS_DIRTY);
1654 set_sbi_flag(sbi, SBI_IS_CLOSE);
1655 f2fs_sync_fs(sb, 1);
1656 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1657 }
1658
4354994f
DR		 1659 if (checkpoint_changed) {
1660 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1661 err = f2fs_disable_checkpoint(sbi);
1662 if (err)
1663 goto restore_gc;
1664 } else {
1665 f2fs_enable_checkpoint(sbi);
1666 }
1667 }
1668
876dc59e
GZ		 1669 /*
1670 * We stop issue flush thread if FS is mounted as RO
1671 * or if flush_merge is not passed in mount option.
1672 */
1751e8a6 1673 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1674 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1675 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1676 } else {
4d57b86d 1677 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1678 if (err)
a688b9d9 1679 goto restore_gc;
696c018c
NJ		 1680 }
1681skip:
4b2414d0
CY		 1682#ifdef CONFIG_QUOTA
1683 /* Release old quota file names */
1684 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1685 kvfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1686#endif
696c018c 1687 /* Update the POSIXACL Flag */
1751e8a6
LT		 1688 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1689 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1690
7e65be49 1691 limit_reserve_root(sbi);
095680f2 1692 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1693 return 0;
876dc59e
GZ		 1694restore_gc:
1695 if (need_restart_gc) {
4d57b86d 1696 if (f2fs_start_gc_thread(sbi))
dcbb4c10 1697 f2fs_warn(sbi, "background gc thread has stopped");
876dc59e 1698 } else if (need_stop_gc) {
4d57b86d 1699 f2fs_stop_gc_thread(sbi);
876dc59e 1700 }
696c018c 1701restore_opts:
4b2414d0 1702#ifdef CONFIG_QUOTA
63189b78 1703 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1704 for (i = 0; i < MAXQUOTAS; i++) {
5222595d 1705 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 1706 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1707 }
1708#endif
696c018c 1709 sbi->mount_opt = org_mount_opt;
0abd675e 1710 sb->s_flags = old_sb_flags;
696c018c
NJ		 1711 return err;
1712}
1713
0abd675e
CY		 1714#ifdef CONFIG_QUOTA
1715/* Read data from quotafile */
1716static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1717 size_t len, loff_t off)
1718{
1719 struct inode *inode = sb_dqopt(sb)->files[type];
1720 struct address_space *mapping = inode->i_mapping;
1721 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1722 int offset = off & (sb->s_blocksize - 1);
1723 int tocopy;
1724 size_t toread;
1725 loff_t i_size = i_size_read(inode);
1726 struct page *page;
1727 char *kaddr;
1728
1729 if (off > i_size)
1730 return 0;
1731
1732 if (off + len > i_size)
1733 len = i_size - off;
1734 toread = len;
1735 while (toread > 0) {
1736 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1737repeat:
02117b8a 1738 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1739 if (IS_ERR(page)) {
1740 if (PTR_ERR(page) == -ENOMEM) {
1741 congestion_wait(BLK_RW_ASYNC, HZ/50);
1742 goto repeat;
1743 }
af033b2a 1744 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1745 return PTR_ERR(page);
4e46a023 1746 }
0abd675e
CY		 1747
1748 lock_page(page);
1749
1750 if (unlikely(page->mapping != mapping)) {
1751 f2fs_put_page(page, 1);
1752 goto repeat;
1753 }
1754 if (unlikely(!PageUptodate(page))) {
1755 f2fs_put_page(page, 1);
af033b2a 1756 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1757 return -EIO;
1758 }
1759
1760 kaddr = kmap_atomic(page);
1761 memcpy(data, kaddr + offset, tocopy);
1762 kunmap_atomic(kaddr);
1763 f2fs_put_page(page, 1);
1764
1765 offset = 0;
1766 toread -= tocopy;
1767 data += tocopy;
1768 blkidx++;
1769 }
1770 return len;
1771}
1772
1773/* Write to quotafile */
1774static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1775 const char *data, size_t len, loff_t off)
1776{
1777 struct inode *inode = sb_dqopt(sb)->files[type];
1778 struct address_space *mapping = inode->i_mapping;
1779 const struct address_space_operations *a_ops = mapping->a_ops;
1780 int offset = off & (sb->s_blocksize - 1);
1781 size_t towrite = len;
1782 struct page *page;
1783 char *kaddr;
1784 int err = 0;
1785 int tocopy;
1786
1787 while (towrite > 0) {
1788 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1789 towrite);
4e46a023 1790retry:
0abd675e
CY		 1791 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1792 &page, NULL);
4e46a023
JK		 1793 if (unlikely(err)) {
1794 if (err == -ENOMEM) {
1795 congestion_wait(BLK_RW_ASYNC, HZ/50);
1796 goto retry;
1797 }
af033b2a 1798 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1799 break;
4e46a023 1800 }
0abd675e
CY		 1801
1802 kaddr = kmap_atomic(page);
1803 memcpy(kaddr + offset, data, tocopy);
1804 kunmap_atomic(kaddr);
1805 flush_dcache_page(page);
1806
1807 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1808 page, NULL);
1809 offset = 0;
1810 towrite -= tocopy;
1811 off += tocopy;
1812 data += tocopy;
1813 cond_resched();
1814 }
1815
1816 if (len == towrite)
6e5b5d41 1817 return err;
0abd675e
CY		 1818 inode->i_mtime = inode->i_ctime = current_time(inode);
1819 f2fs_mark_inode_dirty_sync(inode, false);
1820 return len - towrite;
1821}
1822
1823static struct dquot **f2fs_get_dquots(struct inode *inode)
1824{
1825 return F2FS_I(inode)->i_dquot;
1826}
1827
1828static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1829{
1830 return &F2FS_I(inode)->i_reserved_quota;
1831}
1832
4b2414d0
CY		 1833static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1834{
af033b2a 1835 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1836 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
af033b2a
CY		 1837 return 0;
1838 }
1839
63189b78
CY		 1840 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1841 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1842}
1843
ea676733 1844int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1845{
ea676733
JK		 1846 int enabled = 0;
1847 int i, err;
1848
7beb01f7 1849 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 1850 err = f2fs_enable_quotas(sbi->sb);
1851 if (err) {
dcbb4c10 1852 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
ea676733
JK		 1853 return 0;
1854 }
1855 return 1;
1856 }
4b2414d0
CY		 1857
1858 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 1859 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 1860 err = f2fs_quota_on_mount(sbi, i);
1861 if (!err) {
1862 enabled = 1;
1863 continue;
1864 }
dcbb4c10
JP		 1865 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
1866 err, i);
4b2414d0
CY		 1867 }
1868 }
ea676733
JK		 1869 return enabled;
1870}
1871
1872static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1873 unsigned int flags)
1874{
1875 struct inode *qf_inode;
1876 unsigned long qf_inum;
1877 int err;
1878
7beb01f7 1879 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 1880
1881 qf_inum = f2fs_qf_ino(sb, type);
1882 if (!qf_inum)
1883 return -EPERM;
1884
1885 qf_inode = f2fs_iget(sb, qf_inum);
1886 if (IS_ERR(qf_inode)) {
dcbb4c10 1887 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
ea676733
JK		 1888 return PTR_ERR(qf_inode);
1889 }
1890
1891 /* Don't account quota for quota files to avoid recursion */
1892 qf_inode->i_flags |= S_NOQUOTA;
1893 err = dquot_enable(qf_inode, type, format_id, flags);
1894 iput(qf_inode);
1895 return err;
1896}
1897
1898static int f2fs_enable_quotas(struct super_block *sb)
1899{
dcbb4c10 1900 struct f2fs_sb_info *sbi = F2FS_SB(sb);
ea676733
JK		 1901 int type, err = 0;
1902 unsigned long qf_inum;
1903 bool quota_mopt[MAXQUOTAS] = {
dcbb4c10
JP		 1904 test_opt(sbi, USRQUOTA),
1905 test_opt(sbi, GRPQUOTA),
1906 test_opt(sbi, PRJQUOTA),
ea676733
JK		 1907 };
1908
af033b2a 1909 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1910 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
af033b2a
CY		 1911 return 0;
1912 }
1913
1914 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1915
ea676733
JK		 1916 for (type = 0; type < MAXQUOTAS; type++) {
1917 qf_inum = f2fs_qf_ino(sb, type);
1918 if (qf_inum) {
1919 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1920 DQUOT_USAGE_ENABLED |
1921 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1922 if (err) {
dcbb4c10
JP		 1923 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
1924 type, err);
ea676733
JK		 1925 for (type--; type >= 0; type--)
1926 dquot_quota_off(sb, type);
af033b2a
CY		 1927 set_sbi_flag(F2FS_SB(sb),
1928 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 1929 return err;
1930 }
4b2414d0
CY		 1931 }
1932 }
ea676733 1933 return 0;
4b2414d0
CY		 1934}
1935
af033b2a 1936int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 1937{
af033b2a 1938 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 1939 struct quota_info *dqopt = sb_dqopt(sb);
1940 int cnt;
1941 int ret;
1942
db6ec53b
JK		 1943 /*
1944 * do_quotactl
1945 * f2fs_quota_sync
1946 * down_read(quota_sem)
1947 * dquot_writeback_dquots()
1948 * f2fs_dquot_commit
1949 * block_operation
1950 * down_read(quota_sem)
1951 */
1952 f2fs_lock_op(sbi);
1953
1954 down_read(&sbi->quota_sem);
0abd675e
CY		 1955 ret = dquot_writeback_dquots(sb, type);
1956 if (ret)
af033b2a 1957 goto out;
0abd675e
CY		 1958
1959 /*
1960 * Now when everything is written we can discard the pagecache so
1961 * that userspace sees the changes.
1962 */
1963 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 1964 struct address_space *mapping;
1965
0abd675e
CY		 1966 if (type != -1 && cnt != type)
1967 continue;
1968 if (!sb_has_quota_active(sb, cnt))
1969 continue;
1970
af033b2a
CY		 1971 mapping = dqopt->files[cnt]->i_mapping;
1972
1973 ret = filemap_fdatawrite(mapping);
0abd675e 1974 if (ret)
af033b2a
CY		 1975 goto out;
1976
1977 /* if we are using journalled quota */
1978 if (is_journalled_quota(sbi))
1979 continue;
1980
1981 ret = filemap_fdatawait(mapping);
1982 if (ret)
1983 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1984
1985 inode_lock(dqopt->files[cnt]);
1986 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
1987 inode_unlock(dqopt->files[cnt]);
1988 }
af033b2a
CY		 1989out:
1990 if (ret)
1991 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
db6ec53b
JK		 1992 up_read(&sbi->quota_sem);
1993 f2fs_unlock_op(sbi);
af033b2a 1994 return ret;
0abd675e
CY		 1995}
1996
1997static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
1998 const struct path *path)
1999{
2000 struct inode *inode;
2001 int err;
2002
9a20d391 2003 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 2004 if (err)
2005 return err;
2006
2007 err = dquot_quota_on(sb, type, format_id, path);
2008 if (err)
2009 return err;
2010
2011 inode = d_inode(path->dentry);
2012
2013 inode_lock(inode);
59c84408 2014 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 2015 f2fs_set_inode_flags(inode);
0abd675e
CY		 2016 inode_unlock(inode);
2017 f2fs_mark_inode_dirty_sync(inode, false);
2018
2019 return 0;
2020}
2021
2022static int f2fs_quota_off(struct super_block *sb, int type)
2023{
2024 struct inode *inode = sb_dqopt(sb)->files[type];
2025 int err;
2026
2027 if (!inode || !igrab(inode))
2028 return dquot_quota_off(sb, type);
2029
cda9cc59
YH		 2030 err = f2fs_quota_sync(sb, type);
2031 if (err)
2032 goto out_put;
0abd675e
CY		 2033
2034 err = dquot_quota_off(sb, type);
7beb01f7 2035 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2036 goto out_put;
2037
2038 inode_lock(inode);
59c84408 2039 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2040 f2fs_set_inode_flags(inode);
0abd675e
CY		 2041 inode_unlock(inode);
2042 f2fs_mark_inode_dirty_sync(inode, false);
2043out_put:
2044 iput(inode);
2045 return err;
2046}
2047
4b2414d0 2048void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2049{
2050 int type;
cda9cc59
YH		 2051 int err;
2052
2053 for (type = 0; type < MAXQUOTAS; type++) {
2054 err = f2fs_quota_off(sb, type);
2055 if (err) {
2056 int ret = dquot_quota_off(sb, type);
0abd675e 2057
dcbb4c10
JP		 2058 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2059 type, err, ret);
af033b2a 2060 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2061 }
2062 }
0e0667b6
JK		 2063 /*
2064 * In case of checkpoint=disable, we must flush quota blocks.
2065 * This can cause NULL exception for node_inode in end_io, since
2066 * put_super already dropped it.
2067 */
2068 sync_filesystem(sb);
0abd675e
CY		 2069}
2070
26b5a079
SY		 2071static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2072{
2073 struct quota_info *dqopt = sb_dqopt(sb);
2074 int type;
2075
2076 for (type = 0; type < MAXQUOTAS; type++) {
2077 if (!dqopt->files[type])
2078 continue;
2079 f2fs_inode_synced(dqopt->files[type]);
2080 }
2081}
2082
af033b2a
CY		 2083static int f2fs_dquot_commit(struct dquot *dquot)
2084{
db6ec53b 2085 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2086 int ret;
2087
db6ec53b 2088 down_read(&sbi->quota_sem);
af033b2a
CY		 2089 ret = dquot_commit(dquot);
2090 if (ret < 0)
db6ec53b
JK		 2091 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2092 up_read(&sbi->quota_sem);
af033b2a
CY		 2093 return ret;
2094}
2095
2096static int f2fs_dquot_acquire(struct dquot *dquot)
2097{
db6ec53b 2098 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2099 int ret;
2100
db6ec53b 2101 down_read(&sbi->quota_sem);
af033b2a
CY		 2102 ret = dquot_acquire(dquot);
2103 if (ret < 0)
db6ec53b
JK		 2104 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2105 up_read(&sbi->quota_sem);
af033b2a
CY		 2106 return ret;
2107}
2108
2109static int f2fs_dquot_release(struct dquot *dquot)
2110{
db6ec53b 2111 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2112 int ret;
2113
db6ec53b 2114 down_read(&sbi->quota_sem);
af033b2a
CY		 2115 ret = dquot_release(dquot);
2116 if (ret < 0)
db6ec53b
JK		 2117 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2118 up_read(&sbi->quota_sem);
af033b2a
CY		 2119 return ret;
2120}
2121
2122static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2123{
2124 struct super_block *sb = dquot->dq_sb;
2125 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2126 int ret;
2127
db6ec53b 2128 down_read(&sbi->quota_sem);
af033b2a
CY		 2129 ret = dquot_mark_dquot_dirty(dquot);
2130
2131 /* if we are using journalled quota */
2132 if (is_journalled_quota(sbi))
2133 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2134
db6ec53b 2135 up_read(&sbi->quota_sem);
af033b2a
CY		 2136 return ret;
2137}
2138
2139static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2140{
db6ec53b 2141 struct f2fs_sb_info *sbi = F2FS_SB(sb);
af033b2a
CY		 2142 int ret;
2143
db6ec53b 2144 down_read(&sbi->quota_sem);
af033b2a
CY		 2145 ret = dquot_commit_info(sb, type);
2146 if (ret < 0)
db6ec53b
JK		 2147 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2148 up_read(&sbi->quota_sem);
af033b2a
CY		 2149 return ret;
2150}
26b5a079 2151
94b1e10e 2152static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2153{
2154 *projid = F2FS_I(inode)->i_projid;
2155 return 0;
2156}
2157
0abd675e
CY		 2158static const struct dquot_operations f2fs_quota_operations = {
2159 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2160 .write_dquot = f2fs_dquot_commit,
2161 .acquire_dquot = f2fs_dquot_acquire,
2162 .release_dquot = f2fs_dquot_release,
2163 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2164 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2165 .alloc_dquot = dquot_alloc,
2166 .destroy_dquot = dquot_destroy,
5c57132e 2167 .get_projid = f2fs_get_projid,
0abd675e
CY		 2168 .get_next_id = dquot_get_next_id,
2169};
2170
2171static const struct quotactl_ops f2fs_quotactl_ops = {
2172 .quota_on = f2fs_quota_on,
2173 .quota_off = f2fs_quota_off,
2174 .quota_sync = f2fs_quota_sync,
2175 .get_state = dquot_get_state,
2176 .set_info = dquot_set_dqinfo,
2177 .get_dqblk = dquot_get_dqblk,
2178 .set_dqblk = dquot_set_dqblk,
2179 .get_nextdqblk = dquot_get_next_dqblk,
2180};
2181#else
af033b2a
CY		 2182int f2fs_quota_sync(struct super_block *sb, int type)
2183{
2184 return 0;
2185}
2186
4b2414d0 2187void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2188{
2189}
2190#endif
2191
f62fc9f9 2192static const struct super_operations f2fs_sops = {
aff063e2 2193 .alloc_inode = f2fs_alloc_inode,
d01718a0 2194 .free_inode = f2fs_free_inode,
531ad7d5 2195 .drop_inode = f2fs_drop_inode,
aff063e2 2196 .write_inode = f2fs_write_inode,
b3783873 2197 .dirty_inode = f2fs_dirty_inode,
aff063e2 2198 .show_options = f2fs_show_options,
0abd675e
CY		 2199#ifdef CONFIG_QUOTA
2200 .quota_read = f2fs_quota_read,
2201 .quota_write = f2fs_quota_write,
2202 .get_dquots = f2fs_get_dquots,
2203#endif
aff063e2
JK		 2204 .evict_inode = f2fs_evict_inode,
2205 .put_super = f2fs_put_super,
2206 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2207 .freeze_fs = f2fs_freeze,
2208 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2209 .statfs = f2fs_statfs,
696c018c 2210 .remount_fs = f2fs_remount,
aff063e2
JK		 2211};
2212
643fa961 2213#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 2214static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2215{
2216 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2217 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2218 ctx, len, NULL);
2219}
2220
2221static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2222 void *fs_data)
2223{
b7c409de
SY		 2224 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2225
2226 /*
2227 * Encrypting the root directory is not allowed because fsck
2228 * expects lost+found directory to exist and remain unencrypted
2229 * if LOST_FOUND feature is enabled.
2230 *
2231 */
7beb01f7 2232 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2233 inode->i_ino == F2FS_ROOT_INO(sbi))
2234 return -EPERM;
2235
0b81d077
JK		 2236 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2237 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2238 ctx, len, fs_data, XATTR_CREATE);
2239}
2240
ff62af20
SY		 2241static bool f2fs_dummy_context(struct inode *inode)
2242{
2243 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2244}
2245
6f69f0ed 2246static const struct fscrypt_operations f2fs_cryptops = {
a5d431ef 2247 .key_prefix = "f2fs:",
0b81d077
JK		 2248 .get_context = f2fs_get_context,
2249 .set_context = f2fs_set_context,
ff62af20 2250 .dummy_context = f2fs_dummy_context,
0b81d077 2251 .empty_dir = f2fs_empty_dir,
e12ee683 2252 .max_namelen = F2FS_NAME_LEN,
0b81d077 2253};
0b81d077
JK		 2254#endif
2255
aff063e2
JK		 2256static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2257 u64 ino, u32 generation)
2258{
2259 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2260 struct inode *inode;
2261
4d57b86d 2262 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2263 return ERR_PTR(-ESTALE);
aff063e2
JK		 2264
2265 /*
2266 * f2fs_iget isn't quite right if the inode is currently unallocated!
2267 * However f2fs_iget currently does appropriate checks to handle stale
2268 * inodes so everything is OK.
2269 */
2270 inode = f2fs_iget(sb, ino);
2271 if (IS_ERR(inode))
2272 return ERR_CAST(inode);
6bacf52f 2273 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2274 /* we didn't find the right inode.. */
2275 iput(inode);
2276 return ERR_PTR(-ESTALE);
2277 }
2278 return inode;
2279}
2280
2281static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2282 int fh_len, int fh_type)
2283{
2284 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2285 f2fs_nfs_get_inode);
2286}
2287
2288static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2289 int fh_len, int fh_type)
2290{
2291 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2292 f2fs_nfs_get_inode);
2293}
2294
2295static const struct export_operations f2fs_export_ops = {
2296 .fh_to_dentry = f2fs_fh_to_dentry,
2297 .fh_to_parent = f2fs_fh_to_parent,
2298 .get_parent = f2fs_get_parent,
2299};
2300
e0afc4d6 2301static loff_t max_file_blocks(void)
aff063e2 2302{
7a2af766 2303 loff_t result = 0;
d02a6e61 2304 loff_t leaf_count = DEF_ADDRS_PER_BLOCK;
aff063e2 2305
7a2af766
CY		 2306 /*
2307 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2308 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2309 * space in inode.i_addr, it will be more safe to reassign
2310 * result as zero.
2311 */
2312
aff063e2
JK		 2313 /* two direct node blocks */
2314 result += (leaf_count * 2);
2315
2316 /* two indirect node blocks */
2317 leaf_count *= NIDS_PER_BLOCK;
2318 result += (leaf_count * 2);
2319
2320 /* one double indirect node block */
2321 leaf_count *= NIDS_PER_BLOCK;
2322 result += leaf_count;
2323
aff063e2
JK		 2324 return result;
2325}
2326
fd694733
JK		 2327static int __f2fs_commit_super(struct buffer_head *bh,
2328 struct f2fs_super_block *super)
2329{
2330 lock_buffer(bh);
2331 if (super)
2332 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2333 set_buffer_dirty(bh);
2334 unlock_buffer(bh);
2335
2336 /* it's rare case, we can do fua all the time */
3adc5fcb 2337 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2338}
2339
df728b0f 2340static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2341 struct buffer_head *bh)
9a59b62f 2342{
fd694733
JK		 2343 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2344 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2345 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2346 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2347 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2348 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2349 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2350 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2351 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2352 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2353 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2354 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2355 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2356 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2357 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2358 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2359 u64 main_end_blkaddr = main_blkaddr +
2360 (segment_count_main << log_blocks_per_seg);
2361 u64 seg_end_blkaddr = segment0_blkaddr +
2362 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2363
2364 if (segment0_blkaddr != cp_blkaddr) {
dcbb4c10
JP		 2365 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2366 segment0_blkaddr, cp_blkaddr);
9a59b62f
CY		 2367 return true;
2368 }
2369
2370 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2371 sit_blkaddr) {
dcbb4c10
JP		 2372 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2373 cp_blkaddr, sit_blkaddr,
2374 segment_count_ckpt << log_blocks_per_seg);
9a59b62f
CY		 2375 return true;
2376 }
2377
2378 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2379 nat_blkaddr) {
dcbb4c10
JP		 2380 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2381 sit_blkaddr, nat_blkaddr,
2382 segment_count_sit << log_blocks_per_seg);
9a59b62f
CY		 2383 return true;
2384 }
2385
2386 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2387 ssa_blkaddr) {
dcbb4c10
JP		 2388 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2389 nat_blkaddr, ssa_blkaddr,
2390 segment_count_nat << log_blocks_per_seg);
9a59b62f
CY		 2391 return true;
2392 }
2393
2394 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2395 main_blkaddr) {
dcbb4c10
JP		 2396 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2397 ssa_blkaddr, main_blkaddr,
2398 segment_count_ssa << log_blocks_per_seg);
9a59b62f
CY		 2399 return true;
2400 }
2401
fd694733 2402 if (main_end_blkaddr > seg_end_blkaddr) {
dcbb4c10
JP		 2403 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2404 main_blkaddr,
2405 segment0_blkaddr +
2406 (segment_count << log_blocks_per_seg),
2407 segment_count_main << log_blocks_per_seg);
9a59b62f 2408 return true;
fd694733
JK		 2409 } else if (main_end_blkaddr < seg_end_blkaddr) {
2410 int err = 0;
2411 char *res;
2412
2413 /* fix in-memory information all the time */
2414 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2415 segment0_blkaddr) >> log_blocks_per_seg);
2416
2417 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2418 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2419 res = "internally";
2420 } else {
2421 err = __f2fs_commit_super(bh, NULL);
2422 res = err ? "failed" : "done";
2423 }
dcbb4c10
JP		 2424 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2425 res, main_blkaddr,
2426 segment0_blkaddr +
2427 (segment_count << log_blocks_per_seg),
2428 segment_count_main << log_blocks_per_seg);
fd694733
JK		 2429 if (err)
2430 return true;
9a59b62f 2431 }
9a59b62f
CY		 2432 return false;
2433}
2434
df728b0f 2435static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2436 struct buffer_head *bh)
aff063e2 2437{
0cfe75c5
JK		 2438 block_t segment_count, segs_per_sec, secs_per_zone;
2439 block_t total_sections, blocks_per_seg;
fd694733
JK		 2440 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2441 (bh->b_data + F2FS_SUPER_OFFSET);
aff063e2 2442 unsigned int blocksize;
d440c52d
JZ		 2443 size_t crc_offset = 0;
2444 __u32 crc = 0;
2445
38fb6d0e
IZ		 2446 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2447 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2448 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2449 return -EINVAL;
2450 }
2451
d440c52d 2452 /* Check checksum_offset and crc in superblock */
7beb01f7 2453 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2454 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2455 if (crc_offset !=
2456 offsetof(struct f2fs_super_block, crc)) {
dcbb4c10
JP		 2457 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2458 crc_offset);
38fb6d0e 2459 return -EFSCORRUPTED;
d440c52d
JZ		 2460 }
2461 crc = le32_to_cpu(raw_super->crc);
2462 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
dcbb4c10 2463 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
38fb6d0e 2464 return -EFSCORRUPTED;
d440c52d
JZ		 2465 }
2466 }
aff063e2 2467
5c9b4692 2468 /* Currently, support only 4KB page cache size */
09cbfeaf 2469 if (F2FS_BLKSIZE != PAGE_SIZE) {
dcbb4c10
JP		 2470 f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
2471 PAGE_SIZE);
38fb6d0e 2472 return -EFSCORRUPTED;
5c9b4692 2473 }
2474
aff063e2
JK		 2475 /* Currently, support only 4KB block size */
2476 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2477 if (blocksize != F2FS_BLKSIZE) {
dcbb4c10
JP		 2478 f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
2479 blocksize);
38fb6d0e 2480 return -EFSCORRUPTED;
a07ef784 2481 }
5c9b4692 2482
9a59b62f
CY		 2483 /* check log blocks per segment */
2484 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
dcbb4c10
JP		 2485 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2486 le32_to_cpu(raw_super->log_blocks_per_seg));
38fb6d0e 2487 return -EFSCORRUPTED;
9a59b62f
CY		 2488 }
2489
55cf9cb6
CY		 2490 /* Currently, support 512/1024/2048/4096 bytes sector size */
2491 if (le32_to_cpu(raw_super->log_sectorsize) >
2492 F2FS_MAX_LOG_SECTOR_SIZE ||
2493 le32_to_cpu(raw_super->log_sectorsize) <
2494 F2FS_MIN_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2495 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2496 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2497 return -EFSCORRUPTED;
a07ef784 2498 }
55cf9cb6
CY		 2499 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2500 le32_to_cpu(raw_super->log_sectorsize) !=
2501 F2FS_MAX_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2502 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
2503 le32_to_cpu(raw_super->log_sectors_per_block),
2504 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2505 return -EFSCORRUPTED;
a07ef784 2506 }
9a59b62f 2507
0cfe75c5
JK		 2508 segment_count = le32_to_cpu(raw_super->segment_count);
2509 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2510 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2511 total_sections = le32_to_cpu(raw_super->section_count);
2512
2513 /* blocks_per_seg should be 512, given the above check */
2514 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2515
2516 if (segment_count > F2FS_MAX_SEGMENT ||
2517 segment_count < F2FS_MIN_SEGMENTS) {
dcbb4c10 2518 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
38fb6d0e 2519 return -EFSCORRUPTED;
0cfe75c5
JK		 2520 }
2521
2522 if (total_sections > segment_count ||
2523 total_sections < F2FS_MIN_SEGMENTS ||
2524 segs_per_sec > segment_count || !segs_per_sec) {
dcbb4c10
JP		 2525 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
2526 segment_count, total_sections, segs_per_sec);
38fb6d0e 2527 return -EFSCORRUPTED;
0cfe75c5
JK		 2528 }
2529
2530 if ((segment_count / segs_per_sec) < total_sections) {
dcbb4c10
JP		 2531 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
2532 segment_count, segs_per_sec, total_sections);
38fb6d0e 2533 return -EFSCORRUPTED;
0cfe75c5
JK		 2534 }
2535
88960068 2536 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
dcbb4c10
JP		 2537 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
2538 segment_count, le64_to_cpu(raw_super->block_count));
38fb6d0e 2539 return -EFSCORRUPTED;
0cfe75c5
JK		 2540 }
2541
42bf546c 2542 if (secs_per_zone > total_sections || !secs_per_zone) {
dcbb4c10
JP		 2543 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
2544 secs_per_zone, total_sections);
38fb6d0e 2545 return -EFSCORRUPTED;
0cfe75c5
JK		 2546 }
2547 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2548 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2549 (le32_to_cpu(raw_super->extension_count) +
2550 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
dcbb4c10
JP		 2551 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
2552 le32_to_cpu(raw_super->extension_count),
2553 raw_super->hot_ext_count,
2554 F2FS_MAX_EXTENSION);
38fb6d0e 2555 return -EFSCORRUPTED;
0cfe75c5
JK		 2556 }
2557
2558 if (le32_to_cpu(raw_super->cp_payload) >
2559 (blocks_per_seg - F2FS_CP_PACKS)) {
dcbb4c10
JP		 2560 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
2561 le32_to_cpu(raw_super->cp_payload),
2562 blocks_per_seg - F2FS_CP_PACKS);
38fb6d0e 2563 return -EFSCORRUPTED;
0cfe75c5
JK		 2564 }
2565
9a59b62f
CY		 2566 /* check reserved ino info */
2567 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2568 le32_to_cpu(raw_super->meta_ino) != 2 ||
2569 le32_to_cpu(raw_super->root_ino) != 3) {
dcbb4c10
JP		 2570 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2571 le32_to_cpu(raw_super->node_ino),
2572 le32_to_cpu(raw_super->meta_ino),
2573 le32_to_cpu(raw_super->root_ino));
38fb6d0e 2574 return -EFSCORRUPTED;
9a59b62f
CY		 2575 }
2576
2577 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2578 if (sanity_check_area_boundary(sbi, bh))
38fb6d0e 2579 return -EFSCORRUPTED;
9a59b62f 2580
aff063e2
JK		 2581 return 0;
2582}
2583
4d57b86d 2584int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2585{
2586 unsigned int total, fsmeta;
577e3495
JK		 2587 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2588 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2589 unsigned int ovp_segments, reserved_segments;
15d3042a 2590 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2591 unsigned int sit_segs, nat_segs;
2592 unsigned int sit_bitmap_size, nat_bitmap_size;
2593 unsigned int log_blocks_per_seg;
9dc956b2 2594 unsigned int segment_count_main;
e494c2f9 2595 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 2596 block_t user_block_count, valid_user_blocks;
2597 block_t avail_node_count, valid_node_count;
042be0f8 2598 int i, j;
aff063e2
JK		 2599
2600 total = le32_to_cpu(raw_super->segment_count);
2601 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2602 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2603 fsmeta += sit_segs;
2604 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2605 fsmeta += nat_segs;
aff063e2
JK		 2606 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2607 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2608
6bacf52f 2609 if (unlikely(fsmeta >= total))
aff063e2 2610 return 1;
577e3495 2611
2040fce8
JK		 2612 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2613 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2614
2615 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2616 ovp_segments == 0 || reserved_segments == 0)) {
dcbb4c10 2617 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2040fce8
JK		 2618 return 1;
2619 }
2620
9dc956b2
CY		 2621 user_block_count = le64_to_cpu(ckpt->user_block_count);
2622 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2623 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2624 if (!user_block_count || user_block_count >=
2625 segment_count_main << log_blocks_per_seg) {
dcbb4c10
JP		 2626 f2fs_err(sbi, "Wrong user_block_count: %u",
2627 user_block_count);
9dc956b2
CY		 2628 return 1;
2629 }
2630
7b63f72f
CY		 2631 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2632 if (valid_user_blocks > user_block_count) {
dcbb4c10
JP		 2633 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
2634 valid_user_blocks, user_block_count);
7b63f72f
CY		 2635 return 1;
2636 }
2637
2638 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
2639 avail_node_count = sbi->total_node_count - sbi->nquota_files -
2640 F2FS_RESERVED_NODE_NUM;
2641 if (valid_node_count > avail_node_count) {
dcbb4c10
JP		 2642 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
2643 valid_node_count, avail_node_count);
7b63f72f
CY		 2644 return 1;
2645 }
2646
15d3042a
JQ		 2647 main_segs = le32_to_cpu(raw_super->segment_count_main);
2648 blocks_per_seg = sbi->blocks_per_seg;
2649
2650 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2651 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2652 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2653 return 1;
042be0f8
CY		 2654 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2655 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2656 le32_to_cpu(ckpt->cur_node_segno[j])) {
dcbb4c10
JP		 2657 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
2658 i, j,
2659 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2660 return 1;
2661 }
2662 }
15d3042a
JQ		 2663 }
2664 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2665 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2666 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2667 return 1;
042be0f8
CY		 2668 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2669 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2670 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2671 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
2672 i, j,
2673 le32_to_cpu(ckpt->cur_data_segno[i]));
042be0f8
CY		 2674 return 1;
2675 }
2676 }
2677 }
2678 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2679 for (j = i; j < NR_CURSEG_DATA_TYPE; j++) {
2680 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2681 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2682 f2fs_err(sbi, "Data segment (%u) and Data segment (%u) has the same segno: %u",
2683 i, j,
2684 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2685 return 1;
2686 }
2687 }
15d3042a
JQ		 2688 }
2689
c77ec61c
CY		 2690 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2691 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2692
2693 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2694 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
dcbb4c10
JP		 2695 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
2696 sit_bitmap_size, nat_bitmap_size);
c77ec61c
CY		 2697 return 1;
2698 }
e494c2f9
CY		 2699
2700 cp_pack_start_sum = __start_sum_addr(sbi);
2701 cp_payload = __cp_payload(sbi);
2702 if (cp_pack_start_sum < cp_payload + 1 ||
2703 cp_pack_start_sum > blocks_per_seg - 1 -
2704 NR_CURSEG_TYPE) {
dcbb4c10
JP		 2705 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
2706 cp_pack_start_sum);
e494c2f9
CY		 2707 return 1;
2708 }
c77ec61c 2709
5dae2d39
CY		 2710 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
2711 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2d008835
CY		 2712 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
2713 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
2714 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
dcbb4c10 2715 le32_to_cpu(ckpt->checksum_offset));
5dae2d39
CY		 2716 return 1;
2717 }
2718
1e968fdf 2719 if (unlikely(f2fs_cp_error(sbi))) {
dcbb4c10 2720 f2fs_err(sbi, "A bug case: need to run fsck");
577e3495
JK		 2721 return 1;
2722 }
aff063e2
JK		 2723 return 0;
2724}
2725
2726static void init_sb_info(struct f2fs_sb_info *sbi)
2727{
2728 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 2729 int i;
aff063e2
JK		 2730
2731 sbi->log_sectors_per_block =
2732 le32_to_cpu(raw_super->log_sectors_per_block);
2733 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2734 sbi->blocksize = 1 << sbi->log_blocksize;
2735 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2736 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2737 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2738 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2739 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2740 sbi->total_node_count =
2741 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2742 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2743 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2744 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2745 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2746 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 2747 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2748 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 2749 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 2750 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 2751
ab9fa662 2752 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2753 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2754 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2755 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2756 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2757 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 2758 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2759 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 2760 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2761
35782b23
JK		 2762 for (i = 0; i < NR_COUNT_TYPE; i++)
2763 atomic_set(&sbi->nr_pages[i], 0);
2764
c29fd0c0
CY		 2765 for (i = 0; i < META; i++)
2766 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2767
2658e50d
JK		 2768 INIT_LIST_HEAD(&sbi->s_list);
2769 mutex_init(&sbi->umount_mutex);
107a805d 2770 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2771 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2772
2773 sbi->dirty_device = 0;
2774 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2775
846ae671 2776 init_rwsem(&sbi->sb_lock);
aff063e2
JK		 2777}
2778
523be8a6
JK		 2779static int init_percpu_info(struct f2fs_sb_info *sbi)
2780{
35782b23 2781 int err;
41382ec4 2782
513c5f37
JK		 2783 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2784 if (err)
2785 return err;
2786
4a70e255 2787 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2788 GFP_KERNEL);
4a70e255
CY		 2789 if (err)
2790 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2791
2792 return err;
523be8a6
JK		 2793}
2794
178053e2 2795#ifdef CONFIG_BLK_DEV_ZONED
3c62be17 2796static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2797{
3c62be17 2798 struct block_device *bdev = FDEV(devi).bdev;
178053e2
DLM		 2799 sector_t nr_sectors = bdev->bd_part->nr_sects;
2800 sector_t sector = 0;
2801 struct blk_zone *zones;
2802 unsigned int i, nr_zones;
2803 unsigned int n = 0;
2804 int err = -EIO;
2805
7beb01f7 2806 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 2807 return 0;
2808
3c62be17 2809 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 2810 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 2811 return -EINVAL;
f99e8648 2812 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 2813 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2814 __ilog2_u32(sbi->blocks_per_blkz))
2815 return -EINVAL;
178053e2 2816 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 2817 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2818 sbi->log_blocks_per_blkz;
f99e8648 2819 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 2820 FDEV(devi).nr_blkz++;
178053e2 2821
95175daf
DLM		 2822 FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
2823 BITS_TO_LONGS(FDEV(devi).nr_blkz)
2824 * sizeof(unsigned long),
2825 GFP_KERNEL);
2826 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 2827 return -ENOMEM;
2828
2829#define F2FS_REPORT_NR_ZONES 4096
2830
026f0507
KC		 2831 zones = f2fs_kzalloc(sbi,
2832 array_size(F2FS_REPORT_NR_ZONES,
2833 sizeof(struct blk_zone)),
2834 GFP_KERNEL);
178053e2
DLM		 2835 if (!zones)
2836 return -ENOMEM;
2837
2838 /* Get block zones type */
2839 while (zones && sector < nr_sectors) {
2840
2841 nr_zones = F2FS_REPORT_NR_ZONES;
bd976e52 2842 err = blkdev_report_zones(bdev, sector, zones, &nr_zones);
178053e2
DLM		 2843 if (err)
2844 break;
2845 if (!nr_zones) {
2846 err = -EIO;
2847 break;
2848 }
2849
2850 for (i = 0; i < nr_zones; i++) {
95175daf
DLM		 2851 if (zones[i].type != BLK_ZONE_TYPE_CONVENTIONAL)
2852 set_bit(n, FDEV(devi).blkz_seq);
178053e2
DLM		 2853 sector += zones[i].len;
2854 n++;
2855 }
2856 }
2857
5222595d 2858 kvfree(zones);
178053e2
DLM		 2859
2860 return err;
2861}
2862#endif
2863
9076a75f
GZ		 2864/*
2865 * Read f2fs raw super block.
2b39e907
SL		 2866 * Because we have two copies of super block, so read both of them
2867 * to get the first valid one. If any one of them is broken, we pass
2868 * them recovery flag back to the caller.
9076a75f 2869 */
df728b0f 2870static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 2871 struct f2fs_super_block **raw_super,
e8240f65 2872 int *valid_super_block, int *recovery)
14d7e9de 2873{
df728b0f 2874 struct super_block *sb = sbi->sb;
2b39e907 2875 int block;
e8240f65 2876 struct buffer_head *bh;
fd694733 2877 struct f2fs_super_block *super;
da554e48 2878 int err = 0;
14d7e9de 2879
b39f0de2
YH		 2880 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2881 if (!super)
2882 return -ENOMEM;
2b39e907
SL		 2883
2884 for (block = 0; block < 2; block++) {
2885 bh = sb_bread(sb, block);
2886 if (!bh) {
dcbb4c10
JP		 2887 f2fs_err(sbi, "Unable to read %dth superblock",
2888 block + 1);
2b39e907
SL		 2889 err = -EIO;
2890 continue;
2891 }
14d7e9de 2892
2b39e907 2893 /* sanity checking of raw super */
38fb6d0e
IZ		 2894 err = sanity_check_raw_super(sbi, bh);
2895 if (err) {
dcbb4c10
JP		 2896 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
2897 block + 1);
2b39e907
SL		 2898 brelse(bh);
2899 continue;
2900 }
14d7e9de 2901
2b39e907 2902 if (!*raw_super) {
fd694733
JK		 2903 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2904 sizeof(*super));
2b39e907
SL		 2905 *valid_super_block = block;
2906 *raw_super = super;
2907 }
2908 brelse(bh);
da554e48 2909 }
2910
2b39e907
SL		 2911 /* Fail to read any one of the superblocks*/
2912 if (err < 0)
2913 *recovery = 1;
da554e48 2914
da554e48 2915 /* No valid superblock */
2b39e907 2916 if (!*raw_super)
5222595d 2917 kvfree(super);
2b39e907
SL		 2918 else
2919 err = 0;
da554e48 2920
2b39e907 2921 return err;
14d7e9de 2922}
2923
fd694733 2924int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 2925{
5d909cdb 2926 struct buffer_head *bh;
d440c52d 2927 __u32 crc = 0;
26d815ad
JK		 2928 int err;
2929
df728b0f
JK		 2930 if ((recover && f2fs_readonly(sbi->sb)) ||
2931 bdev_read_only(sbi->sb->s_bdev)) {
2932 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 2933 return -EROFS;
df728b0f 2934 }
f2353d7b 2935
d440c52d 2936 /* we should update superblock crc here */
7beb01f7 2937 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 2938 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
2939 offsetof(struct f2fs_super_block, crc));
2940 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
2941 }
2942
fd694733 2943 /* write back-up superblock first */
0964fc1a 2944 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 2945 if (!bh)
2946 return -EIO;
fd694733 2947 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 2948 brelse(bh);
c5bda1c8
CY		 2949
2950 /* if we are in recovery path, skip writing valid superblock */
2951 if (recover || err)
5d909cdb 2952 return err;
26d815ad
JK		 2953
2954 /* write current valid superblock */
0964fc1a 2955 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 2956 if (!bh)
2957 return -EIO;
2958 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2959 brelse(bh);
2960 return err;
26d815ad
JK		 2961}
2962
3c62be17
JK		 2963static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
2964{
2965 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 2966 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 2967 int i;
2968
7bb3a371
MS		 2969 /* Initialize single device information */
2970 if (!RDEV(0).path[0]) {
2971 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 2972 return 0;
7bb3a371
MS		 2973 max_devices = 1;
2974 }
3c62be17 2975
7bb3a371
MS		 2976 /*
2977 * Initialize multiple devices information, or single
2978 * zoned block device information.
2979 */
026f0507
KC		 2980 sbi->devs = f2fs_kzalloc(sbi,
2981 array_size(max_devices,
2982 sizeof(struct f2fs_dev_info)),
2983 GFP_KERNEL);
7bb3a371
MS		 2984 if (!sbi->devs)
2985 return -ENOMEM;
3c62be17 2986
7bb3a371 2987 for (i = 0; i < max_devices; i++) {
3c62be17 2988
7bb3a371
MS		 2989 if (i > 0 && !RDEV(i).path[0])
2990 break;
2991
2992 if (max_devices == 1) {
2993 /* Single zoned block device mount */
2994 FDEV(0).bdev =
2995 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 2996 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 2997 } else {
2998 /* Multi-device mount */
2999 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3000 FDEV(i).total_segments =
3001 le32_to_cpu(RDEV(i).total_segments);
3002 if (i == 0) {
3003 FDEV(i).start_blk = 0;
3004 FDEV(i).end_blk = FDEV(i).start_blk +
3005 (FDEV(i).total_segments <<
3006 sbi->log_blocks_per_seg) - 1 +
3007 le32_to_cpu(raw_super->segment0_blkaddr);
3008 } else {
3009 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3010 FDEV(i).end_blk = FDEV(i).start_blk +
3011 (FDEV(i).total_segments <<
3012 sbi->log_blocks_per_seg) - 1;
3013 }
3014 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 3015 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 3016 }
3c62be17
JK		 3017 if (IS_ERR(FDEV(i).bdev))
3018 return PTR_ERR(FDEV(i).bdev);
3019
3020 /* to release errored devices */
3021 sbi->s_ndevs = i + 1;
3022
3023#ifdef CONFIG_BLK_DEV_ZONED
3024 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3025 !f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3026 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3c62be17
JK		 3027 return -EINVAL;
3028 }
3029 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3030 if (init_blkz_info(sbi, i)) {
dcbb4c10 3031 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3c62be17
JK		 3032 return -EINVAL;
3033 }
7bb3a371
MS		 3034 if (max_devices == 1)
3035 break;
dcbb4c10
JP		 3036 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3037 i, FDEV(i).path,
3038 FDEV(i).total_segments,
3039 FDEV(i).start_blk, FDEV(i).end_blk,
3040 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3041 "Host-aware" : "Host-managed");
3c62be17
JK		 3042 continue;
3043 }
3044#endif
dcbb4c10
JP		 3045 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3046 i, FDEV(i).path,
3047 FDEV(i).total_segments,
3048 FDEV(i).start_blk, FDEV(i).end_blk);
3049 }
3050 f2fs_info(sbi,
3051 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3052 return 0;
3053}
3054
84b89e5d
JK		 3055static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3056{
3057 struct f2fs_sm_info *sm_i = SM_I(sbi);
3058
3059 /* adjust parameters according to the volume size */
3060 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3061 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3062 sm_i->dcc_info->discard_granularity = 1;
3063 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3064 }
4cac90d5
CY		 3065
3066 sbi->readdir_ra = 1;
84b89e5d
JK		 3067}
3068
aff063e2
JK		 3069static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3070{
3071 struct f2fs_sb_info *sbi;
da554e48 3072 struct f2fs_super_block *raw_super;
aff063e2 3073 struct inode *root;
99e3e858 3074 int err;
aa2c8c43 3075 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3076 char *options = NULL;
e8240f65 3077 int recovery, i, valid_super_block;
8f1dbbbb 3078 struct curseg_info *seg_i;
aa2c8c43 3079 int retry_cnt = 1;
aff063e2 3080
ed2e621a 3081try_onemore:
da554e48 3082 err = -EINVAL;
3083 raw_super = NULL;
e8240f65 3084 valid_super_block = -1;
da554e48 3085 recovery = 0;
3086
aff063e2
JK		 3087 /* allocate memory for f2fs-specific super block info */
3088 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3089 if (!sbi)
3090 return -ENOMEM;
3091
df728b0f
JK		 3092 sbi->sb = sb;
3093
43b6573b
KM		 3094 /* Load the checksum driver */
3095 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3096 if (IS_ERR(sbi->s_chksum_driver)) {
dcbb4c10 3097 f2fs_err(sbi, "Cannot load crc32 driver.");
43b6573b
KM		 3098 err = PTR_ERR(sbi->s_chksum_driver);
3099 sbi->s_chksum_driver = NULL;
3100 goto free_sbi;
3101 }
3102
ff9234ad 3103 /* set a block size */
6bacf52f 3104 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
dcbb4c10 3105 f2fs_err(sbi, "unable to set blocksize");
aff063e2 3106 goto free_sbi;
a07ef784 3107 }
aff063e2 3108
df728b0f 3109 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3110 &recovery);
9076a75f
GZ		 3111 if (err)
3112 goto free_sbi;
3113
5fb08372 3114 sb->s_fs_info = sbi;
52763a4b
JK		 3115 sbi->raw_super = raw_super;
3116
704956ec 3117 /* precompute checksum seed for metadata */
7beb01f7 3118 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3119 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3120 sizeof(raw_super->uuid));
3121
d1b959c8
DLM		 3122 /*
3123 * The BLKZONED feature indicates that the drive was formatted with
3124 * zone alignment optimization. This is optional for host-aware
3125 * devices, but mandatory for host-managed zoned block devices.
3126 */
3127#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3128 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3129 f2fs_err(sbi, "Zoned block device support is not enabled");
1727f317 3130 err = -EOPNOTSUPP;
d1b959c8
DLM		 3131 goto free_sb_buf;
3132 }
d1b959c8 3133#endif
498c5e9f 3134 default_options(sbi);
aff063e2 3135 /* parse mount options */
dabc4a5c
JK		 3136 options = kstrdup((const char *)data, GFP_KERNEL);
3137 if (data && !options) {
3138 err = -ENOMEM;
aff063e2 3139 goto free_sb_buf;
dabc4a5c
JK		 3140 }
3141
3142 err = parse_options(sb, options);
3143 if (err)
3144 goto free_options;
aff063e2 3145
e0afc4d6
CY		 3146 sbi->max_file_blocks = max_file_blocks();
3147 sb->s_maxbytes = sbi->max_file_blocks <<
3148 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3149 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3150
0abd675e
CY		 3151#ifdef CONFIG_QUOTA
3152 sb->dq_op = &f2fs_quota_operations;
bc88ac96 3153 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3154 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3155
7beb01f7 3156 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3157 for (i = 0; i < MAXQUOTAS; i++) {
3158 if (f2fs_qf_ino(sbi->sb, i))
3159 sbi->nquota_files++;
3160 }
3161 }
0abd675e
CY		 3162#endif
3163
aff063e2 3164 sb->s_op = &f2fs_sops;
643fa961 3165#ifdef CONFIG_FS_ENCRYPTION
0b81d077 3166 sb->s_cop = &f2fs_cryptops;
ffcc4182 3167#endif
aff063e2
JK		 3168 sb->s_xattr = f2fs_xattr_handlers;
3169 sb->s_export_op = &f2fs_export_ops;
3170 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3171 sb->s_time_gran = 1;
1751e8a6
LT		 3172 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3173 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3174 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3175 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3176
3177 /* init f2fs-specific super block info */
e8240f65 3178 sbi->valid_super_block = valid_super_block;
aff063e2 3179 mutex_init(&sbi->gc_mutex);
853137ce 3180 mutex_init(&sbi->writepages);
aff063e2 3181 mutex_init(&sbi->cp_mutex);
04f0b2ea 3182 mutex_init(&sbi->resize_mutex);
b3582c68 3183 init_rwsem(&sbi->node_write);
59c9081b 3184 init_rwsem(&sbi->node_change);
315df839
JK		 3185
3186 /* disallow all the data/node/meta page writes */
3187 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3188 spin_lock_init(&sbi->stat_lock);
971767ca 3189
b0af6d49
CY		 3190 /* init iostat info */
3191 spin_lock_init(&sbi->iostat_lock);
3192 sbi->iostat_enable = false;
3193
458e6197 3194 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3195 int n = (i == META) ? 1: NR_TEMP_TYPE;
3196 int j;
3197
c8606593
KC		 3198 sbi->write_io[i] =
3199 f2fs_kmalloc(sbi,
3200 array_size(n,
3201 sizeof(struct f2fs_bio_info)),
3202 GFP_KERNEL);
b63def91
CJ		 3203 if (!sbi->write_io[i]) {
3204 err = -ENOMEM;
0b2103e8 3205 goto free_bio_info;
b63def91 3206 }
a912b54d
JK		 3207
3208 for (j = HOT; j < n; j++) {
3209 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3210 sbi->write_io[i][j].sbi = sbi;
3211 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3212 spin_lock_init(&sbi->write_io[i][j].io_lock);
3213 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
a912b54d 3214 }
458e6197 3215 }
971767ca 3216
b873b798 3217 init_rwsem(&sbi->cp_rwsem);
db6ec53b 3218 init_rwsem(&sbi->quota_sem);
fb51b5ef 3219 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3220 init_sb_info(sbi);
3221
523be8a6
JK		 3222 err = init_percpu_info(sbi);
3223 if (err)
d7997e63 3224 goto free_bio_info;
523be8a6 3225
c72db71e 3226 if (F2FS_IO_ALIGNED(sbi)) {
0a595eba 3227 sbi->write_io_dummy =
a3ebfe4f 3228 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3229 if (!sbi->write_io_dummy) {
3230 err = -ENOMEM;
d7997e63 3231 goto free_percpu;
1727f317 3232 }
0a595eba
JK		 3233 }
3234
aff063e2
JK		 3235 /* get an inode for meta space */
3236 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3237 if (IS_ERR(sbi->meta_inode)) {
dcbb4c10 3238 f2fs_err(sbi, "Failed to read F2FS meta data inode");
aff063e2 3239 err = PTR_ERR(sbi->meta_inode);
0a595eba 3240 goto free_io_dummy;
aff063e2
JK		 3241 }
3242
4d57b86d 3243 err = f2fs_get_valid_checkpoint(sbi);
a07ef784 3244 if (err) {
dcbb4c10 3245 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
aff063e2 3246 goto free_meta_inode;
a07ef784 3247 }
aff063e2 3248
af033b2a
CY		 3249 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3250 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3251 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3252 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3253 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3254 }
af033b2a 3255
04f0b2ea
QS		 3256 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3257 set_sbi_flag(sbi, SBI_NEED_FSCK);
3258
3c62be17
JK		 3259 /* Initialize device list */
3260 err = f2fs_scan_devices(sbi);
3261 if (err) {
dcbb4c10 3262 f2fs_err(sbi, "Failed to find devices");
3c62be17
JK		 3263 goto free_devices;
3264 }
3265
aff063e2
JK		 3266 sbi->total_valid_node_count =
3267 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3268 percpu_counter_set(&sbi->total_valid_inode_count,
3269 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3270 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3271 sbi->total_valid_block_count =
3272 le64_to_cpu(sbi->ckpt->valid_block_count);
3273 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3274 sbi->reserved_blocks = 0;
80d42145 3275 sbi->current_reserved_blocks = 0;
7e65be49 3276 limit_reserve_root(sbi);
41382ec4 3277
c227f912
CY		 3278 for (i = 0; i < NR_INODE_TYPE; i++) {
3279 INIT_LIST_HEAD(&sbi->inode_list[i]);
3280 spin_lock_init(&sbi->inode_lock[i]);
3281 }
040d2bb3 3282 mutex_init(&sbi->flush_lock);
aff063e2 3283
4d57b86d 3284 f2fs_init_extent_cache_info(sbi);
1dcc336b 3285
4d57b86d 3286 f2fs_init_ino_entry_info(sbi);
aff063e2 3287
50fa53ec
CY		 3288 f2fs_init_fsync_node_info(sbi);
3289
aff063e2 3290 /* setup f2fs internal modules */
4d57b86d 3291 err = f2fs_build_segment_manager(sbi);
a07ef784 3292 if (err) {
dcbb4c10
JP		 3293 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3294 err);
aff063e2 3295 goto free_sm;
a07ef784 3296 }
4d57b86d 3297 err = f2fs_build_node_manager(sbi);
a07ef784 3298 if (err) {
dcbb4c10
JP		 3299 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3300 err);
aff063e2 3301 goto free_nm;
a07ef784 3302 }
aff063e2 3303
8f1dbbbb
SL		 3304 /* For write statistics */
3305 if (sb->s_bdev->bd_part)
3306 sbi->sectors_written_start =
dbae2c55
MC		 3307 (u64)part_stat_read(sb->s_bdev->bd_part,
3308 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3309
3310 /* Read accumulated write IO statistics if exists */
3311 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3312 if (__exist_node_summaries(sbi))
3313 sbi->kbytes_written =
b2dde6fc 3314 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3315
4d57b86d 3316 f2fs_build_gc_manager(sbi);
aff063e2 3317
60aa4d55
ST		 3318 err = f2fs_build_stats(sbi);
3319 if (err)
3320 goto free_nm;
3321
aff063e2
JK		 3322 /* get an inode for node space */
3323 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3324 if (IS_ERR(sbi->node_inode)) {
dcbb4c10 3325 f2fs_err(sbi, "Failed to read node inode");
aff063e2 3326 err = PTR_ERR(sbi->node_inode);
60aa4d55 3327 goto free_stats;
aff063e2
JK		 3328 }
3329
aff063e2
JK		 3330 /* read root inode and dentry */
3331 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3332 if (IS_ERR(root)) {
dcbb4c10 3333 f2fs_err(sbi, "Failed to read root inode");
aff063e2 3334 err = PTR_ERR(root);
60aa4d55 3335 goto free_node_inode;
aff063e2 3336 }
bcbfbd60
CY		 3337 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3338 !root->i_size || !root->i_nlink) {
9d847950 3339 iput(root);
8f99a946 3340 err = -EINVAL;
60aa4d55 3341 goto free_node_inode;
8f99a946 3342 }
aff063e2
JK		 3343
3344 sb->s_root = d_make_root(root); /* allocate root dentry */
3345 if (!sb->s_root) {
3346 err = -ENOMEM;
025cdb16 3347 goto free_node_inode;
aff063e2
JK		 3348 }
3349
dc6b2055 3350 err = f2fs_register_sysfs(sbi);
b59d0bae 3351 if (err)
a398101a 3352 goto free_root_inode;
b59d0bae 3353
ea676733 3354#ifdef CONFIG_QUOTA
76cf05d7 3355 /* Enable quota usage during mount */
7beb01f7 3356 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3357 err = f2fs_enable_quotas(sb);
730746ce 3358 if (err)
dcbb4c10 3359 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
ea676733
JK		 3360 }
3361#endif
4b2414d0 3362 /* if there are nt orphan nodes free them */
4d57b86d 3363 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3364 if (err)
ea676733 3365 goto free_meta;
4b2414d0 3366
4354994f 3367 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3368 goto reset_checkpoint;
4354994f 3369
6437d1b0
JK		 3370 /* recover fsynced data */
3371 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
081d78c2
JK		 3372 /*
3373 * mount should be failed, when device has readonly mode, and
3374 * previous checkpoint was not done by clean system shutdown.
3375 */
b61af314
CY		 3376 if (f2fs_hw_is_readonly(sbi)) {
3377 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3378 err = -EROFS;
dcbb4c10 3379 f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
b61af314
CY		 3380 goto free_meta;
3381 }
dcbb4c10 3382 f2fs_info(sbi, "write access unavailable, skipping recovery");
b61af314 3383 goto reset_checkpoint;
081d78c2 3384 }
2adc3505
CY		 3385
3386 if (need_fsck)
3387 set_sbi_flag(sbi, SBI_NEED_FSCK);
3388
aa2c8c43
CY		 3389 if (skip_recovery)
3390 goto reset_checkpoint;
a468f0ef 3391
4d57b86d 3392 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3393 if (err < 0) {
aa2c8c43
CY		 3394 if (err != -ENOMEM)
3395 skip_recovery = true;
2adc3505 3396 need_fsck = true;
dcbb4c10
JP		 3397 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3398 err);
4b2414d0 3399 goto free_meta;
ed2e621a 3400 }
6781eabb 3401 } else {
4d57b86d 3402 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3403
3404 if (!f2fs_readonly(sb) && err > 0) {
3405 err = -EINVAL;
dcbb4c10 3406 f2fs_err(sbi, "Need to recover fsync data");
ea676733 3407 goto free_meta;
6781eabb 3408 }
6437d1b0 3409 }
aa2c8c43 3410reset_checkpoint:
4d57b86d 3411 /* f2fs_recover_fsync_data() cleared this already */
315df839 3412 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3413
4354994f
DR		 3414 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3415 err = f2fs_disable_checkpoint(sbi);
3416 if (err)
812a9597 3417 goto sync_free_meta;
4354994f
DR		 3418 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3419 f2fs_enable_checkpoint(sbi);
3420 }
3421
6437d1b0
JK		 3422 /*
3423 * If filesystem is not mounted as read-only then
3424 * do start the gc_thread.
3425 */
6c029932 3426 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
6437d1b0 3427 /* After POR, we can run background GC thread.*/
4d57b86d 3428 err = f2fs_start_gc_thread(sbi);
6437d1b0 3429 if (err)
812a9597 3430 goto sync_free_meta;
6437d1b0 3431 }
5222595d 3432 kvfree(options);
da554e48 3433
3434 /* recover broken superblock */
f2353d7b 3435 if (recovery) {
41214b3c 3436 err = f2fs_commit_super(sbi, true);
dcbb4c10
JP		 3437 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
3438 sbi->valid_super_block ? 1 : 2, err);
da554e48 3439 }
3440
bae01eda
CY		 3441 f2fs_join_shrinker(sbi);
3442
84b89e5d
JK		 3443 f2fs_tuning_parameters(sbi);
3444
dcbb4c10
JP		 3445 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
3446 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3447 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3448 f2fs_update_time(sbi, REQ_TIME);
db610a64 3449 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3450 return 0;
6437d1b0 3451
812a9597
JK		 3452sync_free_meta:
3453 /* safe to flush all the data */
3454 sync_filesystem(sbi->sb);
aa2c8c43 3455 retry_cnt = 0;
812a9597 3456
4b2414d0 3457free_meta:
ea676733 3458#ifdef CONFIG_QUOTA
26b5a079 3459 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3460 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3461 f2fs_quota_off_umount(sbi->sb);
3462#endif
4b2414d0 3463 /*
4d57b86d 3464 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3465 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3466 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3467 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3468 */
3469 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3470 /* evict some inodes being cached by GC */
3471 evict_inodes(sb);
dc6b2055 3472 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3473free_root_inode:
3474 dput(sb->s_root);
3475 sb->s_root = NULL;
3476free_node_inode:
4d57b86d 3477 f2fs_release_ino_entry(sbi, true);
bae01eda 3478 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3479 iput(sbi->node_inode);
7c77bf7d 3480 sbi->node_inode = NULL;
60aa4d55
ST		 3481free_stats:
3482 f2fs_destroy_stats(sbi);
aff063e2 3483free_nm:
4d57b86d 3484 f2fs_destroy_node_manager(sbi);
aff063e2 3485free_sm:
4d57b86d 3486 f2fs_destroy_segment_manager(sbi);
3c62be17
JK		 3487free_devices:
3488 destroy_device_list(sbi);
5222595d 3489 kvfree(sbi->ckpt);
aff063e2
JK		 3490free_meta_inode:
3491 make_bad_inode(sbi->meta_inode);
3492 iput(sbi->meta_inode);
7c77bf7d 3493 sbi->meta_inode = NULL;
0a595eba
JK		 3494free_io_dummy:
3495 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3496free_percpu:
3497 destroy_percpu_info(sbi);
3498free_bio_info:
a912b54d 3499 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3500 kvfree(sbi->write_io[i]);
d7997e63 3501free_options:
4b2414d0
CY		 3502#ifdef CONFIG_QUOTA
3503 for (i = 0; i < MAXQUOTAS; i++)
5222595d 3504 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3505#endif
5222595d 3506 kvfree(options);
aff063e2 3507free_sb_buf:
5222595d 3508 kvfree(raw_super);
aff063e2 3509free_sbi:
43b6573b
KM		 3510 if (sbi->s_chksum_driver)
3511 crypto_free_shash(sbi->s_chksum_driver);
5222595d 3512 kvfree(sbi);
ed2e621a
JK		 3513
3514 /* give only one another chance */
aa2c8c43
CY		 3515 if (retry_cnt > 0 && skip_recovery) {
3516 retry_cnt--;
ed2e621a
JK		 3517 shrink_dcache_sb(sb);
3518 goto try_onemore;
3519 }
aff063e2
JK		 3520 return err;
3521}
3522
3523static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3524 const char *dev_name, void *data)
3525{
3526 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3527}
3528
30a5537f
JK		 3529static void kill_f2fs_super(struct super_block *sb)
3530{
cce13252 3531 if (sb->s_root) {
1cb50f87
JK		 3532 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3533
3534 set_sbi_flag(sbi, SBI_IS_CLOSE);
3535 f2fs_stop_gc_thread(sbi);
3536 f2fs_stop_discard_thread(sbi);
3537
3538 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3539 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3540 struct cp_control cpc = {
3541 .reason = CP_UMOUNT,
3542 };
3543 f2fs_write_checkpoint(sbi, &cpc);
3544 }
1378752b
CY		 3545
3546 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3547 sb->s_flags &= ~SB_RDONLY;
cce13252 3548 }
30a5537f
JK		 3549 kill_block_super(sb);
3550}
3551
aff063e2
JK		 3552static struct file_system_type f2fs_fs_type = {
3553 .owner = THIS_MODULE,
3554 .name = "f2fs",
3555 .mount = f2fs_mount,
30a5537f 3556 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3557 .fs_flags = FS_REQUIRES_DEV,
3558};
7f78e035 3559MODULE_ALIAS_FS("f2fs");
aff063e2 3560
6e6093a8 3561static int __init init_inodecache(void)
aff063e2 3562{
5d097056
VD		 3563 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3564 sizeof(struct f2fs_inode_info), 0,
3565 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3566 if (!f2fs_inode_cachep)
aff063e2
JK		 3567 return -ENOMEM;
3568 return 0;
3569}
3570
3571static void destroy_inodecache(void)
3572{
3573 /*
3574 * Make sure all delayed rcu free inodes are flushed before we
3575 * destroy cache.
3576 */
3577 rcu_barrier();
3578 kmem_cache_destroy(f2fs_inode_cachep);
3579}
3580
3581static int __init init_f2fs_fs(void)
3582{
3583 int err;
3584
4071e67c
AP		 3585 if (PAGE_SIZE != F2FS_BLKSIZE) {
3586 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3587 PAGE_SIZE, F2FS_BLKSIZE);
3588 return -EINVAL;
3589 }
3590
c0508650
JK		 3591 f2fs_build_trace_ios();
3592
aff063e2
JK		 3593 err = init_inodecache();
3594 if (err)
3595 goto fail;
4d57b86d 3596 err = f2fs_create_node_manager_caches();
aff063e2 3597 if (err)
9890ff3f 3598 goto free_inodecache;
4d57b86d 3599 err = f2fs_create_segment_manager_caches();
aff063e2 3600 if (err)
9890ff3f 3601 goto free_node_manager_caches;
4d57b86d 3602 err = f2fs_create_checkpoint_caches();
aff063e2 3603 if (err)
06292073 3604 goto free_segment_manager_caches;
4d57b86d 3605 err = f2fs_create_extent_cache();
1dcc336b
CY		 3606 if (err)
3607 goto free_checkpoint_caches;
dc6b2055 3608 err = f2fs_init_sysfs();
a398101a 3609 if (err)
1dcc336b 3610 goto free_extent_cache;
2658e50d 3611 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3612 if (err)
a398101a 3613 goto free_sysfs;
2658e50d
JK		 3614 err = register_filesystem(&f2fs_fs_type);
3615 if (err)
3616 goto free_shrinker;
21acc07d 3617 f2fs_create_root_stats();
6dbb1796
EB		 3618 err = f2fs_init_post_read_processing();
3619 if (err)
3620 goto free_root_stats;
9890ff3f
ZH		 3621 return 0;
3622
6dbb1796
EB		 3623free_root_stats:
3624 f2fs_destroy_root_stats();
787c7b8c 3625 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3626free_shrinker:
3627 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3628free_sysfs:
dc6b2055 3629 f2fs_exit_sysfs();
1dcc336b 3630free_extent_cache:
4d57b86d 3631 f2fs_destroy_extent_cache();
9890ff3f 3632free_checkpoint_caches:
4d57b86d 3633 f2fs_destroy_checkpoint_caches();
7fd9e544 3634free_segment_manager_caches:
4d57b86d 3635 f2fs_destroy_segment_manager_caches();
9890ff3f 3636free_node_manager_caches:
4d57b86d 3637 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3638free_inodecache:
3639 destroy_inodecache();
aff063e2
JK		 3640fail:
3641 return err;
3642}
3643
3644static void __exit exit_f2fs_fs(void)
3645{
6dbb1796 3646 f2fs_destroy_post_read_processing();
4589d25d 3647 f2fs_destroy_root_stats();
aff063e2 3648 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3649 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3650 f2fs_exit_sysfs();
4d57b86d
CY		 3651 f2fs_destroy_extent_cache();
3652 f2fs_destroy_checkpoint_caches();
3653 f2fs_destroy_segment_manager_caches();
3654 f2fs_destroy_node_manager_caches();
aff063e2 3655 destroy_inodecache();
351f4fba 3656 f2fs_destroy_trace_ios();
aff063e2
JK		 3657}
3658
3659module_init(init_f2fs_fs)
3660module_exit(exit_f2fs_fs)
3661
3662MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3663MODULE_DESCRIPTION("Flash Friendly File System");
3664MODULE_LICENSE("GPL");
b4b9d34c 3665
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