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Merge tag 'tag-chrome-platform-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6-block.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{
b8d96a30 876 int ret;
531ad7d5
JK		 877 /*
878 * This is to avoid a deadlock condition like below.
879 * writeback_single_inode(inode)
880 * - f2fs_write_data_page
881 * - f2fs_gc -> iput -> evict
882 * - inode_wait_for_writeback(inode)
883 */
0f18b462 884 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 885 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 886 /* to avoid evict_inode call simultaneously */
887 atomic_inc(&inode->i_count);
06e1bc05
JK		 888 spin_unlock(&inode->i_lock);
889
890 /* some remained atomic pages should discarded */
891 if (f2fs_is_atomic_file(inode))
4d57b86d 892 f2fs_drop_inmem_pages(inode);
06e1bc05 893
3e72f721
JK		 894 /* should remain fi->extent_tree for writepage */
895 f2fs_destroy_extent_node(inode);
896
06e1bc05 897 sb_start_intwrite(inode->i_sb);
fc9581c8 898 f2fs_i_size_write(inode, 0);
06e1bc05 899
a0770e13 900 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
901 inode, NULL, 0, DATA);
902 truncate_inode_pages_final(inode->i_mapping);
903
06e1bc05 904 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 905 f2fs_truncate(inode);
06e1bc05
JK		 906
907 sb_end_intwrite(inode->i_sb);
908
06e1bc05 909 spin_lock(&inode->i_lock);
3e72f721 910 atomic_dec(&inode->i_count);
06e1bc05 911 }
b8d96a30 912 trace_f2fs_drop_inode(inode, 0);
531ad7d5 913 return 0;
06e1bc05 914 }
b8d96a30 915 ret = generic_drop_inode(inode);
8ce589c7
EB		 916 if (!ret)
917 ret = fscrypt_drop_inode(inode);
b8d96a30
HP		 918 trace_f2fs_drop_inode(inode, ret);
919 return ret;
531ad7d5
JK		 920}
921
7c45729a 922int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 923{
0f18b462 924 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 925 int ret = 0;
0f18b462 926
0f18b462
JK		 927 spin_lock(&sbi->inode_lock[DIRTY_META]);
928 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 929 ret = 1;
930 } else {
931 set_inode_flag(inode, FI_DIRTY_INODE);
932 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 933 }
7c45729a
JK		 934 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
935 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 936 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 937 inc_page_count(sbi, F2FS_DIRTY_IMETA);
938 }
338bbfa0 939 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 940 return ret;
0f18b462
JK		 941}
942
943void f2fs_inode_synced(struct inode *inode)
944{
945 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
946
947 spin_lock(&sbi->inode_lock[DIRTY_META]);
948 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
949 spin_unlock(&sbi->inode_lock[DIRTY_META]);
950 return;
951 }
7c45729a
JK		 952 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
953 list_del_init(&F2FS_I(inode)->gdirty_list);
954 dec_page_count(sbi, F2FS_DIRTY_IMETA);
955 }
0f18b462 956 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 957 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 958 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 959 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 960}
961
b56ab837
JK		 962/*
963 * f2fs_dirty_inode() is called from __mark_inode_dirty()
964 *
965 * We should call set_dirty_inode to write the dirty inode through write_inode.
966 */
967static void f2fs_dirty_inode(struct inode *inode, int flags)
968{
969 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
970
971 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
972 inode->i_ino == F2FS_META_INO(sbi))
973 return;
974
975 if (flags == I_DIRTY_TIME)
976 return;
977
978 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
979 clear_inode_flag(inode, FI_AUTO_RECOVER);
980
7c45729a 981 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 982}
983
d01718a0 984static void f2fs_free_inode(struct inode *inode)
aff063e2 985{
2c58d548 986 fscrypt_free_inode(inode);
aff063e2
JK		 987 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
988}
989
523be8a6
JK		 990static void destroy_percpu_info(struct f2fs_sb_info *sbi)
991{
41382ec4 992 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 993 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 994}
995
3c62be17
JK		 996static void destroy_device_list(struct f2fs_sb_info *sbi)
997{
998 int i;
999
1000 for (i = 0; i < sbi->s_ndevs; i++) {
1001 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1002#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1003 kvfree(FDEV(i).blkz_seq);
3c62be17
JK		 1004#endif
1005 }
5222595d 1006 kvfree(sbi->devs);
3c62be17
JK		 1007}
1008
aff063e2
JK		 1009static void f2fs_put_super(struct super_block *sb)
1010{
1011 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1012 int i;
cf5c759f 1013 bool dropped;
aff063e2 1014
0abd675e 1015 f2fs_quota_off_umount(sb);
aff063e2 1016
2658e50d
JK		 1017 /* prevent remaining shrinker jobs */
1018 mutex_lock(&sbi->umount_mutex);
1019
85dc2f2c
JK		 1020 /*
1021 * We don't need to do checkpoint when superblock is clean.
1022 * But, the previous checkpoint was not done by umount, it needs to do
1023 * clean checkpoint again.
1024 */
4354994f
DR		 1025 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1026 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1027 struct cp_control cpc = {
1028 .reason = CP_UMOUNT,
1029 };
4d57b86d 1030 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1031 }
aff063e2 1032
4e6a8d9b 1033 /* be sure to wait for any on-going discard commands */
03f2c02d 1034 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1035
7d20c8ab
CY		 1036 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1037 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1038 struct cp_control cpc = {
1039 .reason = CP_UMOUNT | CP_TRIMMED,
1040 };
4d57b86d 1041 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1042 }
1043
cf779cab
JK		 1044 /*
1045 * normally superblock is clean, so we need to release this.
1046 * In addition, EIO will skip do checkpoint, we need this as well.
1047 */
4d57b86d 1048 f2fs_release_ino_entry(sbi, true);
6f12ac25 1049
2658e50d
JK		 1050 f2fs_leave_shrinker(sbi);
1051 mutex_unlock(&sbi->umount_mutex);
1052
17c19120 1053 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1054 f2fs_flush_merged_writes(sbi);
17c19120 1055
50fa53ec
CY		 1056 f2fs_wait_on_all_pages_writeback(sbi);
1057
1058 f2fs_bug_on(sbi, sbi->fsync_node_num);
1059
aff063e2 1060 iput(sbi->node_inode);
7c77bf7d
JK		 1061 sbi->node_inode = NULL;
1062
aff063e2 1063 iput(sbi->meta_inode);
7c77bf7d 1064 sbi->meta_inode = NULL;
aff063e2 1065
60aa4d55
ST		 1066 /*
1067 * iput() can update stat information, if f2fs_write_checkpoint()
1068 * above failed with error.
1069 */
1070 f2fs_destroy_stats(sbi);
1071
aff063e2 1072 /* destroy f2fs internal modules */
4d57b86d
CY		 1073 f2fs_destroy_node_manager(sbi);
1074 f2fs_destroy_segment_manager(sbi);
aff063e2 1075
5222595d 1076 kvfree(sbi->ckpt);
a398101a 1077
dc6b2055 1078 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1079
1080 sb->s_fs_info = NULL;
43b6573b
KM		 1081 if (sbi->s_chksum_driver)
1082 crypto_free_shash(sbi->s_chksum_driver);
5222595d 1083 kvfree(sbi->raw_super);
523be8a6 1084
3c62be17 1085 destroy_device_list(sbi);
b6895e8f 1086 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1087#ifdef CONFIG_QUOTA
1088 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1089 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1090#endif
523be8a6 1091 destroy_percpu_info(sbi);
a912b54d 1092 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d
JK		 1093 kvfree(sbi->write_io[i]);
1094 kvfree(sbi);
aff063e2
JK		 1095}
1096
1097int f2fs_sync_fs(struct super_block *sb, int sync)
1098{
1099 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1100 int err = 0;
aff063e2 1101
1f227a3e
JK		 1102 if (unlikely(f2fs_cp_error(sbi)))
1103 return 0;
4354994f
DR		 1104 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1105 return 0;
1f227a3e 1106
a2a4a7e4
NJ		 1107 trace_f2fs_sync_fs(sb, sync);
1108
4b2414d0
CY		 1109 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1110 return -EAGAIN;
1111
b7473754 1112 if (sync) {
d5053a34
JK		 1113 struct cp_control cpc;
1114
119ee914
JK		 1115 cpc.reason = __get_cp_reason(sbi);
1116
b7473754 1117 mutex_lock(&sbi->gc_mutex);
4d57b86d 1118 err = f2fs_write_checkpoint(sbi, &cpc);
b7473754 1119 mutex_unlock(&sbi->gc_mutex);
b7473754 1120 }
05ca3632 1121 f2fs_trace_ios(NULL, 1);
aff063e2 1122
c34f42e2 1123 return err;
aff063e2
JK		 1124}
1125
d6212a5f
CL		 1126static int f2fs_freeze(struct super_block *sb)
1127{
77888c1e 1128 if (f2fs_readonly(sb))
d6212a5f
CL		 1129 return 0;
1130
b4b9d34c
JK		 1131 /* IO error happened before */
1132 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1133 return -EIO;
1134
1135 /* must be clean, since sync_filesystem() was already called */
1136 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1137 return -EINVAL;
1138 return 0;
d6212a5f
CL		 1139}
1140
1141static int f2fs_unfreeze(struct super_block *sb)
1142{
1143 return 0;
1144}
1145
ddc34e32
CY		 1146#ifdef CONFIG_QUOTA
1147static int f2fs_statfs_project(struct super_block *sb,
1148 kprojid_t projid, struct kstatfs *buf)
1149{
1150 struct kqid qid;
1151 struct dquot *dquot;
1152 u64 limit;
1153 u64 curblock;
1154
1155 qid = make_kqid_projid(projid);
1156 dquot = dqget(sb, qid);
1157 if (IS_ERR(dquot))
1158 return PTR_ERR(dquot);
955ac6e5 1159 spin_lock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1160
1161 limit = (dquot->dq_dqb.dqb_bsoftlimit ?
1162 dquot->dq_dqb.dqb_bsoftlimit :
1163 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
1164 if (limit && buf->f_blocks > limit) {
1165 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1166 buf->f_blocks = limit;
1167 buf->f_bfree = buf->f_bavail =
1168 (buf->f_blocks > curblock) ?
1169 (buf->f_blocks - curblock) : 0;
1170 }
1171
1172 limit = dquot->dq_dqb.dqb_isoftlimit ?
1173 dquot->dq_dqb.dqb_isoftlimit :
1174 dquot->dq_dqb.dqb_ihardlimit;
1175 if (limit && buf->f_files > limit) {
1176 buf->f_files = limit;
1177 buf->f_ffree =
1178 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1179 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1180 }
1181
955ac6e5 1182 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1183 dqput(dquot);
1184 return 0;
1185}
1186#endif
1187
aff063e2
JK		 1188static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1189{
1190 struct super_block *sb = dentry->d_sb;
1191 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1192 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1193 block_t total_count, user_block_count, start_count;
0cc091d0 1194 u64 avail_node_count;
aff063e2
JK		 1195
1196 total_count = le64_to_cpu(sbi->raw_super->block_count);
1197 user_block_count = sbi->user_block_count;
1198 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1199 buf->f_type = F2FS_SUPER_MAGIC;
1200 buf->f_bsize = sbi->blocksize;
1201
1202 buf->f_blocks = total_count - start_count;
f66c027e 1203 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1204 sbi->current_reserved_blocks;
c9c8ed50
CY		 1205
1206 spin_lock(&sbi->stat_lock);
4354994f
DR		 1207 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1208 buf->f_bfree = 0;
1209 else
1210 buf->f_bfree -= sbi->unusable_block_count;
c9c8ed50 1211 spin_unlock(&sbi->stat_lock);
4354994f 1212
63189b78
CY		 1213 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1214 buf->f_bavail = buf->f_bfree -
1215 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1216 else
1217 buf->f_bavail = 0;
aff063e2 1218
292c196a
CY		 1219 avail_node_count = sbi->total_node_count - sbi->nquota_files -
1220 F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1221
1222 if (avail_node_count > user_block_count) {
1223 buf->f_files = user_block_count;
1224 buf->f_ffree = buf->f_bavail;
1225 } else {
1226 buf->f_files = avail_node_count;
1227 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1228 buf->f_bavail);
1229 }
aff063e2 1230
5a20d339 1231 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1232 buf->f_fsid.val[0] = (u32)id;
1233 buf->f_fsid.val[1] = (u32)(id >> 32);
1234
ddc34e32
CY		 1235#ifdef CONFIG_QUOTA
1236 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1237 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1238 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1239 }
1240#endif
aff063e2
JK		 1241 return 0;
1242}
1243
4b2414d0
CY		 1244static inline void f2fs_show_quota_options(struct seq_file *seq,
1245 struct super_block *sb)
1246{
1247#ifdef CONFIG_QUOTA
1248 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1249
63189b78 1250 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1251 char *fmtname = "";
1252
63189b78 1253 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1254 case QFMT_VFS_OLD:
1255 fmtname = "vfsold";
1256 break;
1257 case QFMT_VFS_V0:
1258 fmtname = "vfsv0";
1259 break;
1260 case QFMT_VFS_V1:
1261 fmtname = "vfsv1";
1262 break;
1263 }
1264 seq_printf(seq, ",jqfmt=%s", fmtname);
1265 }
1266
63189b78
CY		 1267 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1268 seq_show_option(seq, "usrjquota",
1269 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1270
63189b78
CY		 1271 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1272 seq_show_option(seq, "grpjquota",
1273 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1274
63189b78
CY		 1275 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1276 seq_show_option(seq, "prjjquota",
1277 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1278#endif
1279}
1280
aff063e2
JK		 1281static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1282{
1283 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1284
6aefd93b
JK		 1285 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1286 if (test_opt(sbi, FORCE_FG_GC))
1287 seq_printf(seq, ",background_gc=%s", "sync");
1288 else
1289 seq_printf(seq, ",background_gc=%s", "on");
1290 } else {
696c018c 1291 seq_printf(seq, ",background_gc=%s", "off");
6aefd93b 1292 }
aff063e2
JK		 1293 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1294 seq_puts(seq, ",disable_roll_forward");
1295 if (test_opt(sbi, DISCARD))
1296 seq_puts(seq, ",discard");
81621f97
ST		 1297 else
1298 seq_puts(seq, ",nodiscard");
aff063e2 1299 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1300 seq_puts(seq, ",no_heap");
1301 else
1302 seq_puts(seq, ",heap");
aff063e2
JK		 1303#ifdef CONFIG_F2FS_FS_XATTR
1304 if (test_opt(sbi, XATTR_USER))
1305 seq_puts(seq, ",user_xattr");
1306 else
1307 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1308 if (test_opt(sbi, INLINE_XATTR))
1309 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1310 else
1311 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1312 if (test_opt(sbi, INLINE_XATTR_SIZE))
1313 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1314 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1315#endif
1316#ifdef CONFIG_F2FS_FS_POSIX_ACL
1317 if (test_opt(sbi, POSIX_ACL))
1318 seq_puts(seq, ",acl");
1319 else
1320 seq_puts(seq, ",noacl");
1321#endif
1322 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1323 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1324 if (test_opt(sbi, INLINE_DATA))
1325 seq_puts(seq, ",inline_data");
75342797
WL		 1326 else
1327 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1328 if (test_opt(sbi, INLINE_DENTRY))
1329 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1330 else
1331 seq_puts(seq, ",noinline_dentry");
b270ad6f 1332 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1333 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1334 if (test_opt(sbi, NOBARRIER))
1335 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1336 if (test_opt(sbi, FASTBOOT))
1337 seq_puts(seq, ",fastboot");
89672159
CY		 1338 if (test_opt(sbi, EXTENT_CACHE))
1339 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1340 else
1341 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1342 if (test_opt(sbi, DATA_FLUSH))
1343 seq_puts(seq, ",data_flush");
36abef4e
JK		 1344
1345 seq_puts(seq, ",mode=");
1346 if (test_opt(sbi, ADAPTIVE))
1347 seq_puts(seq, "adaptive");
1348 else if (test_opt(sbi, LFS))
1349 seq_puts(seq, "lfs");
63189b78 1350 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1351 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1352 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1353 F2FS_OPTION(sbi).root_reserved_blocks,
1354 from_kuid_munged(&init_user_ns,
1355 F2FS_OPTION(sbi).s_resuid),
1356 from_kgid_munged(&init_user_ns,
1357 F2FS_OPTION(sbi).s_resgid));
ec91538d 1358 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1359 seq_printf(seq, ",io_bits=%u",
1360 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1361#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1362 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1363 seq_printf(seq, ",fault_injection=%u",
63189b78 1364 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1365 seq_printf(seq, ",fault_type=%u",
1366 F2FS_OPTION(sbi).fault_info.inject_type);
1367 }
0cc0dec2 1368#endif
0abd675e 1369#ifdef CONFIG_QUOTA
4b2414d0
CY		 1370 if (test_opt(sbi, QUOTA))
1371 seq_puts(seq, ",quota");
0abd675e
CY		 1372 if (test_opt(sbi, USRQUOTA))
1373 seq_puts(seq, ",usrquota");
1374 if (test_opt(sbi, GRPQUOTA))
1375 seq_puts(seq, ",grpquota");
5c57132e
CY		 1376 if (test_opt(sbi, PRJQUOTA))
1377 seq_puts(seq, ",prjquota");
0cc0dec2 1378#endif
4b2414d0 1379 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1380 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1381 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1382 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1383 seq_printf(seq, ",whint_mode=%s", "fs-based");
643fa961 1384#ifdef CONFIG_FS_ENCRYPTION
ff62af20
SY		 1385 if (F2FS_OPTION(sbi).test_dummy_encryption)
1386 seq_puts(seq, ",test_dummy_encryption");
1387#endif
aff063e2 1388
63189b78 1389 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1390 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1391 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1392 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1393
4354994f 1394 if (test_opt(sbi, DISABLE_CHECKPOINT))
4d3aed70
DR		 1395 seq_printf(seq, ",checkpoint=disable:%u",
1396 F2FS_OPTION(sbi).unusable_cap);
63189b78 1397 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1398 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1399 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1400 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1401 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1402 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
aff063e2
JK		 1403 return 0;
1404}
1405
498c5e9f
YH		 1406static void default_options(struct f2fs_sb_info *sbi)
1407{
1408 /* init some FS parameters */
63189b78
CY		 1409 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1410 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1411 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1412 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1413 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1414 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1415 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1416 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
498c5e9f
YH		 1417
1418 set_opt(sbi, BG_GC);
39133a50 1419 set_opt(sbi, INLINE_XATTR);
498c5e9f 1420 set_opt(sbi, INLINE_DATA);
97c1794a 1421 set_opt(sbi, INLINE_DENTRY);
3e72f721 1422 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1423 set_opt(sbi, NOHEAP);
4354994f 1424 clear_opt(sbi, DISABLE_CHECKPOINT);
4d3aed70 1425 F2FS_OPTION(sbi).unusable_cap = 0;
1751e8a6 1426 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1427 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1428 set_opt(sbi, DISCARD);
7beb01f7 1429 if (f2fs_sb_has_blkzoned(sbi))
a39e5365
CY		 1430 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1431 else
52763a4b 1432 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
498c5e9f
YH		 1433
1434#ifdef CONFIG_F2FS_FS_XATTR
1435 set_opt(sbi, XATTR_USER);
1436#endif
1437#ifdef CONFIG_F2FS_FS_POSIX_ACL
1438 set_opt(sbi, POSIX_ACL);
1439#endif
36dbd328 1440
d494500a 1441 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1442}
1443
ea676733
JK		 1444#ifdef CONFIG_QUOTA
1445static int f2fs_enable_quotas(struct super_block *sb);
1446#endif
4354994f
DR		 1447
1448static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1449{
812a9597 1450 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1451 struct cp_control cpc;
812a9597
JK		 1452 int err = 0;
1453 int ret;
4d3aed70 1454 block_t unusable;
4354994f 1455
812a9597 1456 if (s_flags & SB_RDONLY) {
dcbb4c10 1457 f2fs_err(sbi, "checkpoint=disable on readonly fs");
812a9597
JK		 1458 return -EINVAL;
1459 }
4354994f
DR		 1460 sbi->sb->s_flags |= SB_ACTIVE;
1461
4354994f
DR		 1462 f2fs_update_time(sbi, DISABLE_TIME);
1463
1464 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
8f31b466 1465 mutex_lock(&sbi->gc_mutex);
4354994f 1466 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1467 if (err == -ENODATA) {
1468 err = 0;
4354994f 1469 break;
812a9597 1470 }
8f31b466 1471 if (err && err != -EAGAIN)
812a9597 1472 break;
4354994f 1473 }
4354994f 1474
812a9597
JK		 1475 ret = sync_filesystem(sbi->sb);
1476 if (ret || err) {
1477 err = ret ? ret: err;
1478 goto restore_flag;
1479 }
4354994f 1480
4d3aed70
DR		 1481 unusable = f2fs_get_unusable_blocks(sbi);
1482 if (f2fs_disable_cp_again(sbi, unusable)) {
812a9597
JK		 1483 err = -EAGAIN;
1484 goto restore_flag;
1485 }
4354994f
DR		 1486
1487 mutex_lock(&sbi->gc_mutex);
1488 cpc.reason = CP_PAUSE;
1489 set_sbi_flag(sbi, SBI_CP_DISABLED);
896285ad
CY		 1490 err = f2fs_write_checkpoint(sbi, &cpc);
1491 if (err)
1492 goto out_unlock;
4354994f 1493
c9c8ed50 1494 spin_lock(&sbi->stat_lock);
4d3aed70 1495 sbi->unusable_block_count = unusable;
c9c8ed50
CY		 1496 spin_unlock(&sbi->stat_lock);
1497
896285ad 1498out_unlock:
4354994f 1499 mutex_unlock(&sbi->gc_mutex);
812a9597
JK		 1500restore_flag:
1501 sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */
1502 return err;
4354994f
DR		 1503}
1504
1505static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1506{
1507 mutex_lock(&sbi->gc_mutex);
1508 f2fs_dirty_to_prefree(sbi);
1509
1510 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1511 set_sbi_flag(sbi, SBI_IS_DIRTY);
1512 mutex_unlock(&sbi->gc_mutex);
1513
1514 f2fs_sync_fs(sbi->sb, 1);
1515}
1516
696c018c
NJ		 1517static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1518{
1519 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1520 struct f2fs_mount_info org_mount_opt;
0abd675e 1521 unsigned long old_sb_flags;
63189b78 1522 int err;
876dc59e
GZ		 1523 bool need_restart_gc = false;
1524 bool need_stop_gc = false;
9cd81ce3 1525 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f
DR		 1526 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1527 bool checkpoint_changed;
4b2414d0 1528#ifdef CONFIG_QUOTA
4b2414d0
CY		 1529 int i, j;
1530#endif
696c018c
NJ		 1531
1532 /*
1533 * Save the old mount options in case we
1534 * need to restore them.
1535 */
1536 org_mount_opt = sbi->mount_opt;
0abd675e 1537 old_sb_flags = sb->s_flags;
696c018c 1538
4b2414d0 1539#ifdef CONFIG_QUOTA
63189b78 1540 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1541 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1542 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1543 org_mount_opt.s_qf_names[i] =
1544 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1545 GFP_KERNEL);
1546 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1547 for (j = 0; j < i; j++)
5222595d 1548 kvfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1549 return -ENOMEM;
1550 }
1551 } else {
63189b78 1552 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1553 }
1554 }
1555#endif
1556
df728b0f 1557 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1558 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f 1559 err = f2fs_commit_super(sbi, false);
dcbb4c10
JP		 1560 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1561 err);
df728b0f
JK		 1562 if (!err)
1563 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1564 }
1565
498c5e9f 1566 default_options(sbi);
26666c8a 1567
696c018c
NJ		 1568 /* parse mount options */
1569 err = parse_options(sb, data);
1570 if (err)
1571 goto restore_opts;
4354994f
DR		 1572 checkpoint_changed =
1573 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1574
1575 /*
1576 * Previous and new state of filesystem is RO,
876dc59e 1577 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1578 */
1751e8a6 1579 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1580 goto skip;
1581
ea676733 1582#ifdef CONFIG_QUOTA
1751e8a6 1583 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1584 err = dquot_suspend(sb, -1);
1585 if (err < 0)
1586 goto restore_opts;
4354994f 1587 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1588 /* dquot_resume needs RW */
1751e8a6 1589 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1590 if (sb_any_quota_suspended(sb)) {
1591 dquot_resume(sb, -1);
7beb01f7 1592 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1593 err = f2fs_enable_quotas(sb);
1594 if (err)
1595 goto restore_opts;
1596 }
0abd675e 1597 }
ea676733 1598#endif
9cd81ce3
CY		 1599 /* disallow enable/disable extent_cache dynamically */
1600 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1601 err = -EINVAL;
dcbb4c10 1602 f2fs_warn(sbi, "switch extent_cache option is not allowed");
9cd81ce3
CY		 1603 goto restore_opts;
1604 }
1605
4354994f
DR		 1606 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1607 err = -EINVAL;
dcbb4c10 1608 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
4354994f
DR		 1609 goto restore_opts;
1610 }
1611
696c018c
NJ		 1612 /*
1613 * We stop the GC thread if FS is mounted as RO
1614 * or if background_gc = off is passed in mount
1615 * option. Also sync the filesystem.
1616 */
1751e8a6 1617 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
696c018c 1618 if (sbi->gc_thread) {
4d57b86d 1619 f2fs_stop_gc_thread(sbi);
876dc59e 1620 need_restart_gc = true;
696c018c 1621 }
aba291b3 1622 } else if (!sbi->gc_thread) {
4d57b86d 1623 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1624 if (err)
1625 goto restore_opts;
876dc59e
GZ		 1626 need_stop_gc = true;
1627 }
1628
63189b78
CY		 1629 if (*flags & SB_RDONLY ||
1630 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1631 writeback_inodes_sb(sb, WB_REASON_SYNC);
1632 sync_inodes_sb(sb);
1633
1634 set_sbi_flag(sbi, SBI_IS_DIRTY);
1635 set_sbi_flag(sbi, SBI_IS_CLOSE);
1636 f2fs_sync_fs(sb, 1);
1637 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1638 }
1639
4354994f
DR		 1640 if (checkpoint_changed) {
1641 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1642 err = f2fs_disable_checkpoint(sbi);
1643 if (err)
1644 goto restore_gc;
1645 } else {
1646 f2fs_enable_checkpoint(sbi);
1647 }
1648 }
1649
876dc59e
GZ		 1650 /*
1651 * We stop issue flush thread if FS is mounted as RO
1652 * or if flush_merge is not passed in mount option.
1653 */
1751e8a6 1654 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1655 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1656 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1657 } else {
4d57b86d 1658 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1659 if (err)
a688b9d9 1660 goto restore_gc;
696c018c
NJ		 1661 }
1662skip:
4b2414d0
CY		 1663#ifdef CONFIG_QUOTA
1664 /* Release old quota file names */
1665 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1666 kvfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1667#endif
696c018c 1668 /* Update the POSIXACL Flag */
1751e8a6
LT		 1669 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1670 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1671
7e65be49 1672 limit_reserve_root(sbi);
095680f2 1673 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1674 return 0;
876dc59e
GZ		 1675restore_gc:
1676 if (need_restart_gc) {
4d57b86d 1677 if (f2fs_start_gc_thread(sbi))
dcbb4c10 1678 f2fs_warn(sbi, "background gc thread has stopped");
876dc59e 1679 } else if (need_stop_gc) {
4d57b86d 1680 f2fs_stop_gc_thread(sbi);
876dc59e 1681 }
696c018c 1682restore_opts:
4b2414d0 1683#ifdef CONFIG_QUOTA
63189b78 1684 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1685 for (i = 0; i < MAXQUOTAS; i++) {
5222595d 1686 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 1687 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1688 }
1689#endif
696c018c 1690 sbi->mount_opt = org_mount_opt;
0abd675e 1691 sb->s_flags = old_sb_flags;
696c018c
NJ		 1692 return err;
1693}
1694
0abd675e
CY		 1695#ifdef CONFIG_QUOTA
1696/* Read data from quotafile */
1697static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1698 size_t len, loff_t off)
1699{
1700 struct inode *inode = sb_dqopt(sb)->files[type];
1701 struct address_space *mapping = inode->i_mapping;
1702 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1703 int offset = off & (sb->s_blocksize - 1);
1704 int tocopy;
1705 size_t toread;
1706 loff_t i_size = i_size_read(inode);
1707 struct page *page;
1708 char *kaddr;
1709
1710 if (off > i_size)
1711 return 0;
1712
1713 if (off + len > i_size)
1714 len = i_size - off;
1715 toread = len;
1716 while (toread > 0) {
1717 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1718repeat:
02117b8a 1719 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1720 if (IS_ERR(page)) {
1721 if (PTR_ERR(page) == -ENOMEM) {
1722 congestion_wait(BLK_RW_ASYNC, HZ/50);
1723 goto repeat;
1724 }
af033b2a 1725 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1726 return PTR_ERR(page);
4e46a023 1727 }
0abd675e
CY		 1728
1729 lock_page(page);
1730
1731 if (unlikely(page->mapping != mapping)) {
1732 f2fs_put_page(page, 1);
1733 goto repeat;
1734 }
1735 if (unlikely(!PageUptodate(page))) {
1736 f2fs_put_page(page, 1);
af033b2a 1737 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1738 return -EIO;
1739 }
1740
1741 kaddr = kmap_atomic(page);
1742 memcpy(data, kaddr + offset, tocopy);
1743 kunmap_atomic(kaddr);
1744 f2fs_put_page(page, 1);
1745
1746 offset = 0;
1747 toread -= tocopy;
1748 data += tocopy;
1749 blkidx++;
1750 }
1751 return len;
1752}
1753
1754/* Write to quotafile */
1755static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1756 const char *data, size_t len, loff_t off)
1757{
1758 struct inode *inode = sb_dqopt(sb)->files[type];
1759 struct address_space *mapping = inode->i_mapping;
1760 const struct address_space_operations *a_ops = mapping->a_ops;
1761 int offset = off & (sb->s_blocksize - 1);
1762 size_t towrite = len;
1763 struct page *page;
1764 char *kaddr;
1765 int err = 0;
1766 int tocopy;
1767
1768 while (towrite > 0) {
1769 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1770 towrite);
4e46a023 1771retry:
0abd675e
CY		 1772 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1773 &page, NULL);
4e46a023
JK		 1774 if (unlikely(err)) {
1775 if (err == -ENOMEM) {
1776 congestion_wait(BLK_RW_ASYNC, HZ/50);
1777 goto retry;
1778 }
af033b2a 1779 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1780 break;
4e46a023 1781 }
0abd675e
CY		 1782
1783 kaddr = kmap_atomic(page);
1784 memcpy(kaddr + offset, data, tocopy);
1785 kunmap_atomic(kaddr);
1786 flush_dcache_page(page);
1787
1788 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1789 page, NULL);
1790 offset = 0;
1791 towrite -= tocopy;
1792 off += tocopy;
1793 data += tocopy;
1794 cond_resched();
1795 }
1796
1797 if (len == towrite)
6e5b5d41 1798 return err;
0abd675e
CY		 1799 inode->i_mtime = inode->i_ctime = current_time(inode);
1800 f2fs_mark_inode_dirty_sync(inode, false);
1801 return len - towrite;
1802}
1803
1804static struct dquot **f2fs_get_dquots(struct inode *inode)
1805{
1806 return F2FS_I(inode)->i_dquot;
1807}
1808
1809static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1810{
1811 return &F2FS_I(inode)->i_reserved_quota;
1812}
1813
4b2414d0
CY		 1814static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1815{
af033b2a 1816 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1817 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
af033b2a
CY		 1818 return 0;
1819 }
1820
63189b78
CY		 1821 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1822 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1823}
1824
ea676733 1825int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1826{
ea676733
JK		 1827 int enabled = 0;
1828 int i, err;
1829
7beb01f7 1830 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 1831 err = f2fs_enable_quotas(sbi->sb);
1832 if (err) {
dcbb4c10 1833 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
ea676733
JK		 1834 return 0;
1835 }
1836 return 1;
1837 }
4b2414d0
CY		 1838
1839 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 1840 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 1841 err = f2fs_quota_on_mount(sbi, i);
1842 if (!err) {
1843 enabled = 1;
1844 continue;
1845 }
dcbb4c10
JP		 1846 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
1847 err, i);
4b2414d0
CY		 1848 }
1849 }
ea676733
JK		 1850 return enabled;
1851}
1852
1853static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1854 unsigned int flags)
1855{
1856 struct inode *qf_inode;
1857 unsigned long qf_inum;
1858 int err;
1859
7beb01f7 1860 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 1861
1862 qf_inum = f2fs_qf_ino(sb, type);
1863 if (!qf_inum)
1864 return -EPERM;
1865
1866 qf_inode = f2fs_iget(sb, qf_inum);
1867 if (IS_ERR(qf_inode)) {
dcbb4c10 1868 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
ea676733
JK		 1869 return PTR_ERR(qf_inode);
1870 }
1871
1872 /* Don't account quota for quota files to avoid recursion */
1873 qf_inode->i_flags |= S_NOQUOTA;
1874 err = dquot_enable(qf_inode, type, format_id, flags);
1875 iput(qf_inode);
1876 return err;
1877}
1878
1879static int f2fs_enable_quotas(struct super_block *sb)
1880{
dcbb4c10 1881 struct f2fs_sb_info *sbi = F2FS_SB(sb);
ea676733
JK		 1882 int type, err = 0;
1883 unsigned long qf_inum;
1884 bool quota_mopt[MAXQUOTAS] = {
dcbb4c10
JP		 1885 test_opt(sbi, USRQUOTA),
1886 test_opt(sbi, GRPQUOTA),
1887 test_opt(sbi, PRJQUOTA),
ea676733
JK		 1888 };
1889
af033b2a 1890 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1891 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
af033b2a
CY		 1892 return 0;
1893 }
1894
1895 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1896
ea676733
JK		 1897 for (type = 0; type < MAXQUOTAS; type++) {
1898 qf_inum = f2fs_qf_ino(sb, type);
1899 if (qf_inum) {
1900 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1901 DQUOT_USAGE_ENABLED |
1902 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1903 if (err) {
dcbb4c10
JP		 1904 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
1905 type, err);
ea676733
JK		 1906 for (type--; type >= 0; type--)
1907 dquot_quota_off(sb, type);
af033b2a
CY		 1908 set_sbi_flag(F2FS_SB(sb),
1909 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 1910 return err;
1911 }
4b2414d0
CY		 1912 }
1913 }
ea676733 1914 return 0;
4b2414d0
CY		 1915}
1916
af033b2a 1917int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 1918{
af033b2a 1919 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 1920 struct quota_info *dqopt = sb_dqopt(sb);
1921 int cnt;
1922 int ret;
1923
db6ec53b
JK		 1924 /*
1925 * do_quotactl
1926 * f2fs_quota_sync
1927 * down_read(quota_sem)
1928 * dquot_writeback_dquots()
1929 * f2fs_dquot_commit
1930 * block_operation
1931 * down_read(quota_sem)
1932 */
1933 f2fs_lock_op(sbi);
1934
1935 down_read(&sbi->quota_sem);
0abd675e
CY		 1936 ret = dquot_writeback_dquots(sb, type);
1937 if (ret)
af033b2a 1938 goto out;
0abd675e
CY		 1939
1940 /*
1941 * Now when everything is written we can discard the pagecache so
1942 * that userspace sees the changes.
1943 */
1944 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 1945 struct address_space *mapping;
1946
0abd675e
CY		 1947 if (type != -1 && cnt != type)
1948 continue;
1949 if (!sb_has_quota_active(sb, cnt))
1950 continue;
1951
af033b2a
CY		 1952 mapping = dqopt->files[cnt]->i_mapping;
1953
1954 ret = filemap_fdatawrite(mapping);
0abd675e 1955 if (ret)
af033b2a
CY		 1956 goto out;
1957
1958 /* if we are using journalled quota */
1959 if (is_journalled_quota(sbi))
1960 continue;
1961
1962 ret = filemap_fdatawait(mapping);
1963 if (ret)
1964 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1965
1966 inode_lock(dqopt->files[cnt]);
1967 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
1968 inode_unlock(dqopt->files[cnt]);
1969 }
af033b2a
CY		 1970out:
1971 if (ret)
1972 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
db6ec53b
JK		 1973 up_read(&sbi->quota_sem);
1974 f2fs_unlock_op(sbi);
af033b2a 1975 return ret;
0abd675e
CY		 1976}
1977
1978static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
1979 const struct path *path)
1980{
1981 struct inode *inode;
1982 int err;
1983
9a20d391 1984 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 1985 if (err)
1986 return err;
1987
1988 err = dquot_quota_on(sb, type, format_id, path);
1989 if (err)
1990 return err;
1991
1992 inode = d_inode(path->dentry);
1993
1994 inode_lock(inode);
59c84408 1995 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 1996 f2fs_set_inode_flags(inode);
0abd675e
CY		 1997 inode_unlock(inode);
1998 f2fs_mark_inode_dirty_sync(inode, false);
1999
2000 return 0;
2001}
2002
2003static int f2fs_quota_off(struct super_block *sb, int type)
2004{
2005 struct inode *inode = sb_dqopt(sb)->files[type];
2006 int err;
2007
2008 if (!inode || !igrab(inode))
2009 return dquot_quota_off(sb, type);
2010
cda9cc59
YH		 2011 err = f2fs_quota_sync(sb, type);
2012 if (err)
2013 goto out_put;
0abd675e
CY		 2014
2015 err = dquot_quota_off(sb, type);
7beb01f7 2016 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2017 goto out_put;
2018
2019 inode_lock(inode);
59c84408 2020 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2021 f2fs_set_inode_flags(inode);
0abd675e
CY		 2022 inode_unlock(inode);
2023 f2fs_mark_inode_dirty_sync(inode, false);
2024out_put:
2025 iput(inode);
2026 return err;
2027}
2028
4b2414d0 2029void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2030{
2031 int type;
cda9cc59
YH		 2032 int err;
2033
2034 for (type = 0; type < MAXQUOTAS; type++) {
2035 err = f2fs_quota_off(sb, type);
2036 if (err) {
2037 int ret = dquot_quota_off(sb, type);
0abd675e 2038
dcbb4c10
JP		 2039 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2040 type, err, ret);
af033b2a 2041 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2042 }
2043 }
0e0667b6
JK		 2044 /*
2045 * In case of checkpoint=disable, we must flush quota blocks.
2046 * This can cause NULL exception for node_inode in end_io, since
2047 * put_super already dropped it.
2048 */
2049 sync_filesystem(sb);
0abd675e
CY		 2050}
2051
26b5a079
SY		 2052static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2053{
2054 struct quota_info *dqopt = sb_dqopt(sb);
2055 int type;
2056
2057 for (type = 0; type < MAXQUOTAS; type++) {
2058 if (!dqopt->files[type])
2059 continue;
2060 f2fs_inode_synced(dqopt->files[type]);
2061 }
2062}
2063
af033b2a
CY		 2064static int f2fs_dquot_commit(struct dquot *dquot)
2065{
db6ec53b 2066 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2067 int ret;
2068
db6ec53b 2069 down_read(&sbi->quota_sem);
af033b2a
CY		 2070 ret = dquot_commit(dquot);
2071 if (ret < 0)
db6ec53b
JK		 2072 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2073 up_read(&sbi->quota_sem);
af033b2a
CY		 2074 return ret;
2075}
2076
2077static int f2fs_dquot_acquire(struct dquot *dquot)
2078{
db6ec53b 2079 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2080 int ret;
2081
db6ec53b 2082 down_read(&sbi->quota_sem);
af033b2a
CY		 2083 ret = dquot_acquire(dquot);
2084 if (ret < 0)
db6ec53b
JK		 2085 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2086 up_read(&sbi->quota_sem);
af033b2a
CY		 2087 return ret;
2088}
2089
2090static int f2fs_dquot_release(struct dquot *dquot)
2091{
db6ec53b 2092 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2093 int ret;
2094
db6ec53b 2095 down_read(&sbi->quota_sem);
af033b2a
CY		 2096 ret = dquot_release(dquot);
2097 if (ret < 0)
db6ec53b
JK		 2098 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2099 up_read(&sbi->quota_sem);
af033b2a
CY		 2100 return ret;
2101}
2102
2103static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2104{
2105 struct super_block *sb = dquot->dq_sb;
2106 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2107 int ret;
2108
db6ec53b 2109 down_read(&sbi->quota_sem);
af033b2a
CY		 2110 ret = dquot_mark_dquot_dirty(dquot);
2111
2112 /* if we are using journalled quota */
2113 if (is_journalled_quota(sbi))
2114 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2115
db6ec53b 2116 up_read(&sbi->quota_sem);
af033b2a
CY		 2117 return ret;
2118}
2119
2120static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2121{
db6ec53b 2122 struct f2fs_sb_info *sbi = F2FS_SB(sb);
af033b2a
CY		 2123 int ret;
2124
db6ec53b 2125 down_read(&sbi->quota_sem);
af033b2a
CY		 2126 ret = dquot_commit_info(sb, type);
2127 if (ret < 0)
db6ec53b
JK		 2128 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2129 up_read(&sbi->quota_sem);
af033b2a
CY		 2130 return ret;
2131}
26b5a079 2132
94b1e10e 2133static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2134{
2135 *projid = F2FS_I(inode)->i_projid;
2136 return 0;
2137}
2138
0abd675e
CY		 2139static const struct dquot_operations f2fs_quota_operations = {
2140 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2141 .write_dquot = f2fs_dquot_commit,
2142 .acquire_dquot = f2fs_dquot_acquire,
2143 .release_dquot = f2fs_dquot_release,
2144 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2145 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2146 .alloc_dquot = dquot_alloc,
2147 .destroy_dquot = dquot_destroy,
5c57132e 2148 .get_projid = f2fs_get_projid,
0abd675e
CY		 2149 .get_next_id = dquot_get_next_id,
2150};
2151
2152static const struct quotactl_ops f2fs_quotactl_ops = {
2153 .quota_on = f2fs_quota_on,
2154 .quota_off = f2fs_quota_off,
2155 .quota_sync = f2fs_quota_sync,
2156 .get_state = dquot_get_state,
2157 .set_info = dquot_set_dqinfo,
2158 .get_dqblk = dquot_get_dqblk,
2159 .set_dqblk = dquot_set_dqblk,
2160 .get_nextdqblk = dquot_get_next_dqblk,
2161};
2162#else
af033b2a
CY		 2163int f2fs_quota_sync(struct super_block *sb, int type)
2164{
2165 return 0;
2166}
2167
4b2414d0 2168void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2169{
2170}
2171#endif
2172
f62fc9f9 2173static const struct super_operations f2fs_sops = {
aff063e2 2174 .alloc_inode = f2fs_alloc_inode,
d01718a0 2175 .free_inode = f2fs_free_inode,
531ad7d5 2176 .drop_inode = f2fs_drop_inode,
aff063e2 2177 .write_inode = f2fs_write_inode,
b3783873 2178 .dirty_inode = f2fs_dirty_inode,
aff063e2 2179 .show_options = f2fs_show_options,
0abd675e
CY		 2180#ifdef CONFIG_QUOTA
2181 .quota_read = f2fs_quota_read,
2182 .quota_write = f2fs_quota_write,
2183 .get_dquots = f2fs_get_dquots,
2184#endif
aff063e2
JK		 2185 .evict_inode = f2fs_evict_inode,
2186 .put_super = f2fs_put_super,
2187 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2188 .freeze_fs = f2fs_freeze,
2189 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2190 .statfs = f2fs_statfs,
696c018c 2191 .remount_fs = f2fs_remount,
aff063e2
JK		 2192};
2193
643fa961 2194#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 2195static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2196{
2197 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2198 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2199 ctx, len, NULL);
2200}
2201
2202static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2203 void *fs_data)
2204{
b7c409de
SY		 2205 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2206
2207 /*
2208 * Encrypting the root directory is not allowed because fsck
2209 * expects lost+found directory to exist and remain unencrypted
2210 * if LOST_FOUND feature is enabled.
2211 *
2212 */
7beb01f7 2213 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2214 inode->i_ino == F2FS_ROOT_INO(sbi))
2215 return -EPERM;
2216
0b81d077
JK		 2217 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2218 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2219 ctx, len, fs_data, XATTR_CREATE);
2220}
2221
ff62af20
SY		 2222static bool f2fs_dummy_context(struct inode *inode)
2223{
2224 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2225}
2226
6f69f0ed 2227static const struct fscrypt_operations f2fs_cryptops = {
a5d431ef 2228 .key_prefix = "f2fs:",
0b81d077
JK		 2229 .get_context = f2fs_get_context,
2230 .set_context = f2fs_set_context,
ff62af20 2231 .dummy_context = f2fs_dummy_context,
0b81d077 2232 .empty_dir = f2fs_empty_dir,
e12ee683 2233 .max_namelen = F2FS_NAME_LEN,
0b81d077 2234};
0b81d077
JK		 2235#endif
2236
aff063e2
JK		 2237static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2238 u64 ino, u32 generation)
2239{
2240 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2241 struct inode *inode;
2242
4d57b86d 2243 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2244 return ERR_PTR(-ESTALE);
aff063e2
JK		 2245
2246 /*
2247 * f2fs_iget isn't quite right if the inode is currently unallocated!
2248 * However f2fs_iget currently does appropriate checks to handle stale
2249 * inodes so everything is OK.
2250 */
2251 inode = f2fs_iget(sb, ino);
2252 if (IS_ERR(inode))
2253 return ERR_CAST(inode);
6bacf52f 2254 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2255 /* we didn't find the right inode.. */
2256 iput(inode);
2257 return ERR_PTR(-ESTALE);
2258 }
2259 return inode;
2260}
2261
2262static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2263 int fh_len, int fh_type)
2264{
2265 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2266 f2fs_nfs_get_inode);
2267}
2268
2269static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2270 int fh_len, int fh_type)
2271{
2272 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2273 f2fs_nfs_get_inode);
2274}
2275
2276static const struct export_operations f2fs_export_ops = {
2277 .fh_to_dentry = f2fs_fh_to_dentry,
2278 .fh_to_parent = f2fs_fh_to_parent,
2279 .get_parent = f2fs_get_parent,
2280};
2281
e0afc4d6 2282static loff_t max_file_blocks(void)
aff063e2 2283{
7a2af766 2284 loff_t result = 0;
d02a6e61 2285 loff_t leaf_count = DEF_ADDRS_PER_BLOCK;
aff063e2 2286
7a2af766
CY		 2287 /*
2288 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2289 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2290 * space in inode.i_addr, it will be more safe to reassign
2291 * result as zero.
2292 */
2293
aff063e2
JK		 2294 /* two direct node blocks */
2295 result += (leaf_count * 2);
2296
2297 /* two indirect node blocks */
2298 leaf_count *= NIDS_PER_BLOCK;
2299 result += (leaf_count * 2);
2300
2301 /* one double indirect node block */
2302 leaf_count *= NIDS_PER_BLOCK;
2303 result += leaf_count;
2304
aff063e2
JK		 2305 return result;
2306}
2307
fd694733
JK		 2308static int __f2fs_commit_super(struct buffer_head *bh,
2309 struct f2fs_super_block *super)
2310{
2311 lock_buffer(bh);
2312 if (super)
2313 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2314 set_buffer_dirty(bh);
2315 unlock_buffer(bh);
2316
2317 /* it's rare case, we can do fua all the time */
3adc5fcb 2318 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2319}
2320
df728b0f 2321static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2322 struct buffer_head *bh)
9a59b62f 2323{
fd694733
JK		 2324 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2325 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2326 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2327 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2328 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2329 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2330 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2331 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2332 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2333 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2334 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2335 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2336 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2337 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2338 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2339 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2340 u64 main_end_blkaddr = main_blkaddr +
2341 (segment_count_main << log_blocks_per_seg);
2342 u64 seg_end_blkaddr = segment0_blkaddr +
2343 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2344
2345 if (segment0_blkaddr != cp_blkaddr) {
dcbb4c10
JP		 2346 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2347 segment0_blkaddr, cp_blkaddr);
9a59b62f
CY		 2348 return true;
2349 }
2350
2351 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2352 sit_blkaddr) {
dcbb4c10
JP		 2353 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2354 cp_blkaddr, sit_blkaddr,
2355 segment_count_ckpt << log_blocks_per_seg);
9a59b62f
CY		 2356 return true;
2357 }
2358
2359 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2360 nat_blkaddr) {
dcbb4c10
JP		 2361 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2362 sit_blkaddr, nat_blkaddr,
2363 segment_count_sit << log_blocks_per_seg);
9a59b62f
CY		 2364 return true;
2365 }
2366
2367 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2368 ssa_blkaddr) {
dcbb4c10
JP		 2369 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2370 nat_blkaddr, ssa_blkaddr,
2371 segment_count_nat << log_blocks_per_seg);
9a59b62f
CY		 2372 return true;
2373 }
2374
2375 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2376 main_blkaddr) {
dcbb4c10
JP		 2377 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2378 ssa_blkaddr, main_blkaddr,
2379 segment_count_ssa << log_blocks_per_seg);
9a59b62f
CY		 2380 return true;
2381 }
2382
fd694733 2383 if (main_end_blkaddr > seg_end_blkaddr) {
dcbb4c10
JP		 2384 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2385 main_blkaddr,
2386 segment0_blkaddr +
2387 (segment_count << log_blocks_per_seg),
2388 segment_count_main << log_blocks_per_seg);
9a59b62f 2389 return true;
fd694733
JK		 2390 } else if (main_end_blkaddr < seg_end_blkaddr) {
2391 int err = 0;
2392 char *res;
2393
2394 /* fix in-memory information all the time */
2395 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2396 segment0_blkaddr) >> log_blocks_per_seg);
2397
2398 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2399 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2400 res = "internally";
2401 } else {
2402 err = __f2fs_commit_super(bh, NULL);
2403 res = err ? "failed" : "done";
2404 }
dcbb4c10
JP		 2405 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2406 res, main_blkaddr,
2407 segment0_blkaddr +
2408 (segment_count << log_blocks_per_seg),
2409 segment_count_main << log_blocks_per_seg);
fd694733
JK		 2410 if (err)
2411 return true;
9a59b62f 2412 }
9a59b62f
CY		 2413 return false;
2414}
2415
df728b0f 2416static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2417 struct buffer_head *bh)
aff063e2 2418{
0cfe75c5
JK		 2419 block_t segment_count, segs_per_sec, secs_per_zone;
2420 block_t total_sections, blocks_per_seg;
fd694733
JK		 2421 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2422 (bh->b_data + F2FS_SUPER_OFFSET);
aff063e2 2423 unsigned int blocksize;
d440c52d
JZ		 2424 size_t crc_offset = 0;
2425 __u32 crc = 0;
2426
38fb6d0e
IZ		 2427 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2428 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2429 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2430 return -EINVAL;
2431 }
2432
d440c52d 2433 /* Check checksum_offset and crc in superblock */
7beb01f7 2434 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2435 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2436 if (crc_offset !=
2437 offsetof(struct f2fs_super_block, crc)) {
dcbb4c10
JP		 2438 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2439 crc_offset);
38fb6d0e 2440 return -EFSCORRUPTED;
d440c52d
JZ		 2441 }
2442 crc = le32_to_cpu(raw_super->crc);
2443 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
dcbb4c10 2444 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
38fb6d0e 2445 return -EFSCORRUPTED;
d440c52d
JZ		 2446 }
2447 }
aff063e2 2448
5c9b4692 2449 /* Currently, support only 4KB page cache size */
09cbfeaf 2450 if (F2FS_BLKSIZE != PAGE_SIZE) {
dcbb4c10
JP		 2451 f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
2452 PAGE_SIZE);
38fb6d0e 2453 return -EFSCORRUPTED;
5c9b4692 2454 }
2455
aff063e2
JK		 2456 /* Currently, support only 4KB block size */
2457 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2458 if (blocksize != F2FS_BLKSIZE) {
dcbb4c10
JP		 2459 f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
2460 blocksize);
38fb6d0e 2461 return -EFSCORRUPTED;
a07ef784 2462 }
5c9b4692 2463
9a59b62f
CY		 2464 /* check log blocks per segment */
2465 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
dcbb4c10
JP		 2466 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2467 le32_to_cpu(raw_super->log_blocks_per_seg));
38fb6d0e 2468 return -EFSCORRUPTED;
9a59b62f
CY		 2469 }
2470
55cf9cb6
CY		 2471 /* Currently, support 512/1024/2048/4096 bytes sector size */
2472 if (le32_to_cpu(raw_super->log_sectorsize) >
2473 F2FS_MAX_LOG_SECTOR_SIZE ||
2474 le32_to_cpu(raw_super->log_sectorsize) <
2475 F2FS_MIN_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2476 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2477 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2478 return -EFSCORRUPTED;
a07ef784 2479 }
55cf9cb6
CY		 2480 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2481 le32_to_cpu(raw_super->log_sectorsize) !=
2482 F2FS_MAX_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2483 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
2484 le32_to_cpu(raw_super->log_sectors_per_block),
2485 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2486 return -EFSCORRUPTED;
a07ef784 2487 }
9a59b62f 2488
0cfe75c5
JK		 2489 segment_count = le32_to_cpu(raw_super->segment_count);
2490 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2491 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2492 total_sections = le32_to_cpu(raw_super->section_count);
2493
2494 /* blocks_per_seg should be 512, given the above check */
2495 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2496
2497 if (segment_count > F2FS_MAX_SEGMENT ||
2498 segment_count < F2FS_MIN_SEGMENTS) {
dcbb4c10 2499 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
38fb6d0e 2500 return -EFSCORRUPTED;
0cfe75c5
JK		 2501 }
2502
2503 if (total_sections > segment_count ||
2504 total_sections < F2FS_MIN_SEGMENTS ||
2505 segs_per_sec > segment_count || !segs_per_sec) {
dcbb4c10
JP		 2506 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
2507 segment_count, total_sections, segs_per_sec);
38fb6d0e 2508 return -EFSCORRUPTED;
0cfe75c5
JK		 2509 }
2510
2511 if ((segment_count / segs_per_sec) < total_sections) {
dcbb4c10
JP		 2512 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
2513 segment_count, segs_per_sec, total_sections);
38fb6d0e 2514 return -EFSCORRUPTED;
0cfe75c5
JK		 2515 }
2516
88960068 2517 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
dcbb4c10
JP		 2518 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
2519 segment_count, le64_to_cpu(raw_super->block_count));
38fb6d0e 2520 return -EFSCORRUPTED;
0cfe75c5
JK		 2521 }
2522
42bf546c 2523 if (secs_per_zone > total_sections || !secs_per_zone) {
dcbb4c10
JP		 2524 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
2525 secs_per_zone, total_sections);
38fb6d0e 2526 return -EFSCORRUPTED;
0cfe75c5
JK		 2527 }
2528 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2529 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2530 (le32_to_cpu(raw_super->extension_count) +
2531 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
dcbb4c10
JP		 2532 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
2533 le32_to_cpu(raw_super->extension_count),
2534 raw_super->hot_ext_count,
2535 F2FS_MAX_EXTENSION);
38fb6d0e 2536 return -EFSCORRUPTED;
0cfe75c5
JK		 2537 }
2538
2539 if (le32_to_cpu(raw_super->cp_payload) >
2540 (blocks_per_seg - F2FS_CP_PACKS)) {
dcbb4c10
JP		 2541 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
2542 le32_to_cpu(raw_super->cp_payload),
2543 blocks_per_seg - F2FS_CP_PACKS);
38fb6d0e 2544 return -EFSCORRUPTED;
0cfe75c5
JK		 2545 }
2546
9a59b62f
CY		 2547 /* check reserved ino info */
2548 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2549 le32_to_cpu(raw_super->meta_ino) != 2 ||
2550 le32_to_cpu(raw_super->root_ino) != 3) {
dcbb4c10
JP		 2551 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2552 le32_to_cpu(raw_super->node_ino),
2553 le32_to_cpu(raw_super->meta_ino),
2554 le32_to_cpu(raw_super->root_ino));
38fb6d0e 2555 return -EFSCORRUPTED;
9a59b62f
CY		 2556 }
2557
2558 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2559 if (sanity_check_area_boundary(sbi, bh))
38fb6d0e 2560 return -EFSCORRUPTED;
9a59b62f 2561
aff063e2
JK		 2562 return 0;
2563}
2564
4d57b86d 2565int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2566{
2567 unsigned int total, fsmeta;
577e3495
JK		 2568 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2569 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2570 unsigned int ovp_segments, reserved_segments;
15d3042a 2571 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2572 unsigned int sit_segs, nat_segs;
2573 unsigned int sit_bitmap_size, nat_bitmap_size;
2574 unsigned int log_blocks_per_seg;
9dc956b2 2575 unsigned int segment_count_main;
e494c2f9 2576 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 2577 block_t user_block_count, valid_user_blocks;
2578 block_t avail_node_count, valid_node_count;
042be0f8 2579 int i, j;
aff063e2
JK		 2580
2581 total = le32_to_cpu(raw_super->segment_count);
2582 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2583 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2584 fsmeta += sit_segs;
2585 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2586 fsmeta += nat_segs;
aff063e2
JK		 2587 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2588 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2589
6bacf52f 2590 if (unlikely(fsmeta >= total))
aff063e2 2591 return 1;
577e3495 2592
2040fce8
JK		 2593 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2594 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2595
2596 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2597 ovp_segments == 0 || reserved_segments == 0)) {
dcbb4c10 2598 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2040fce8
JK		 2599 return 1;
2600 }
2601
9dc956b2
CY		 2602 user_block_count = le64_to_cpu(ckpt->user_block_count);
2603 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2604 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2605 if (!user_block_count || user_block_count >=
2606 segment_count_main << log_blocks_per_seg) {
dcbb4c10
JP		 2607 f2fs_err(sbi, "Wrong user_block_count: %u",
2608 user_block_count);
9dc956b2
CY		 2609 return 1;
2610 }
2611
7b63f72f
CY		 2612 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2613 if (valid_user_blocks > user_block_count) {
dcbb4c10
JP		 2614 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
2615 valid_user_blocks, user_block_count);
7b63f72f
CY		 2616 return 1;
2617 }
2618
2619 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
2620 avail_node_count = sbi->total_node_count - sbi->nquota_files -
2621 F2FS_RESERVED_NODE_NUM;
2622 if (valid_node_count > avail_node_count) {
dcbb4c10
JP		 2623 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
2624 valid_node_count, avail_node_count);
7b63f72f
CY		 2625 return 1;
2626 }
2627
15d3042a
JQ		 2628 main_segs = le32_to_cpu(raw_super->segment_count_main);
2629 blocks_per_seg = sbi->blocks_per_seg;
2630
2631 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2632 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2633 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2634 return 1;
042be0f8
CY		 2635 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2636 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2637 le32_to_cpu(ckpt->cur_node_segno[j])) {
dcbb4c10
JP		 2638 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
2639 i, j,
2640 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2641 return 1;
2642 }
2643 }
15d3042a
JQ		 2644 }
2645 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2646 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2647 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2648 return 1;
042be0f8
CY		 2649 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2650 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2651 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2652 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
2653 i, j,
2654 le32_to_cpu(ckpt->cur_data_segno[i]));
042be0f8
CY		 2655 return 1;
2656 }
2657 }
2658 }
2659 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2660 for (j = i; j < NR_CURSEG_DATA_TYPE; j++) {
2661 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2662 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2663 f2fs_err(sbi, "Data segment (%u) and Data segment (%u) has the same segno: %u",
2664 i, j,
2665 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2666 return 1;
2667 }
2668 }
15d3042a
JQ		 2669 }
2670
c77ec61c
CY		 2671 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2672 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2673
2674 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2675 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
dcbb4c10
JP		 2676 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
2677 sit_bitmap_size, nat_bitmap_size);
c77ec61c
CY		 2678 return 1;
2679 }
e494c2f9
CY		 2680
2681 cp_pack_start_sum = __start_sum_addr(sbi);
2682 cp_payload = __cp_payload(sbi);
2683 if (cp_pack_start_sum < cp_payload + 1 ||
2684 cp_pack_start_sum > blocks_per_seg - 1 -
2685 NR_CURSEG_TYPE) {
dcbb4c10
JP		 2686 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
2687 cp_pack_start_sum);
e494c2f9
CY		 2688 return 1;
2689 }
c77ec61c 2690
5dae2d39
CY		 2691 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
2692 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2d008835
CY		 2693 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
2694 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
2695 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
dcbb4c10 2696 le32_to_cpu(ckpt->checksum_offset));
5dae2d39
CY		 2697 return 1;
2698 }
2699
1e968fdf 2700 if (unlikely(f2fs_cp_error(sbi))) {
dcbb4c10 2701 f2fs_err(sbi, "A bug case: need to run fsck");
577e3495
JK		 2702 return 1;
2703 }
aff063e2
JK		 2704 return 0;
2705}
2706
2707static void init_sb_info(struct f2fs_sb_info *sbi)
2708{
2709 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 2710 int i;
aff063e2
JK		 2711
2712 sbi->log_sectors_per_block =
2713 le32_to_cpu(raw_super->log_sectors_per_block);
2714 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2715 sbi->blocksize = 1 << sbi->log_blocksize;
2716 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2717 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2718 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2719 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2720 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2721 sbi->total_node_count =
2722 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2723 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2724 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2725 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2726 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2727 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 2728 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2729 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 2730 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 2731 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 2732
ab9fa662 2733 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2734 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2735 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2736 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2737 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2738 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 2739 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2740 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 2741 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2742
35782b23
JK		 2743 for (i = 0; i < NR_COUNT_TYPE; i++)
2744 atomic_set(&sbi->nr_pages[i], 0);
2745
c29fd0c0
CY		 2746 for (i = 0; i < META; i++)
2747 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2748
2658e50d
JK		 2749 INIT_LIST_HEAD(&sbi->s_list);
2750 mutex_init(&sbi->umount_mutex);
107a805d 2751 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2752 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2753
2754 sbi->dirty_device = 0;
2755 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2756
846ae671 2757 init_rwsem(&sbi->sb_lock);
aff063e2
JK		 2758}
2759
523be8a6
JK		 2760static int init_percpu_info(struct f2fs_sb_info *sbi)
2761{
35782b23 2762 int err;
41382ec4 2763
513c5f37
JK		 2764 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2765 if (err)
2766 return err;
2767
4a70e255 2768 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2769 GFP_KERNEL);
4a70e255
CY		 2770 if (err)
2771 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2772
2773 return err;
523be8a6
JK		 2774}
2775
178053e2 2776#ifdef CONFIG_BLK_DEV_ZONED
3c62be17 2777static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2778{
3c62be17 2779 struct block_device *bdev = FDEV(devi).bdev;
178053e2
DLM		 2780 sector_t nr_sectors = bdev->bd_part->nr_sects;
2781 sector_t sector = 0;
2782 struct blk_zone *zones;
2783 unsigned int i, nr_zones;
2784 unsigned int n = 0;
2785 int err = -EIO;
2786
7beb01f7 2787 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 2788 return 0;
2789
3c62be17 2790 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 2791 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 2792 return -EINVAL;
f99e8648 2793 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 2794 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2795 __ilog2_u32(sbi->blocks_per_blkz))
2796 return -EINVAL;
178053e2 2797 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 2798 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2799 sbi->log_blocks_per_blkz;
f99e8648 2800 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 2801 FDEV(devi).nr_blkz++;
178053e2 2802
95175daf
DLM		 2803 FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
2804 BITS_TO_LONGS(FDEV(devi).nr_blkz)
2805 * sizeof(unsigned long),
2806 GFP_KERNEL);
2807 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 2808 return -ENOMEM;
2809
2810#define F2FS_REPORT_NR_ZONES 4096
2811
026f0507
KC		 2812 zones = f2fs_kzalloc(sbi,
2813 array_size(F2FS_REPORT_NR_ZONES,
2814 sizeof(struct blk_zone)),
2815 GFP_KERNEL);
178053e2
DLM		 2816 if (!zones)
2817 return -ENOMEM;
2818
2819 /* Get block zones type */
2820 while (zones && sector < nr_sectors) {
2821
2822 nr_zones = F2FS_REPORT_NR_ZONES;
bd976e52 2823 err = blkdev_report_zones(bdev, sector, zones, &nr_zones);
178053e2
DLM		 2824 if (err)
2825 break;
2826 if (!nr_zones) {
2827 err = -EIO;
2828 break;
2829 }
2830
2831 for (i = 0; i < nr_zones; i++) {
95175daf
DLM		 2832 if (zones[i].type != BLK_ZONE_TYPE_CONVENTIONAL)
2833 set_bit(n, FDEV(devi).blkz_seq);
178053e2
DLM		 2834 sector += zones[i].len;
2835 n++;
2836 }
2837 }
2838
5222595d 2839 kvfree(zones);
178053e2
DLM		 2840
2841 return err;
2842}
2843#endif
2844
9076a75f
GZ		 2845/*
2846 * Read f2fs raw super block.
2b39e907
SL		 2847 * Because we have two copies of super block, so read both of them
2848 * to get the first valid one. If any one of them is broken, we pass
2849 * them recovery flag back to the caller.
9076a75f 2850 */
df728b0f 2851static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 2852 struct f2fs_super_block **raw_super,
e8240f65 2853 int *valid_super_block, int *recovery)
14d7e9de 2854{
df728b0f 2855 struct super_block *sb = sbi->sb;
2b39e907 2856 int block;
e8240f65 2857 struct buffer_head *bh;
fd694733 2858 struct f2fs_super_block *super;
da554e48 2859 int err = 0;
14d7e9de 2860
b39f0de2
YH		 2861 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2862 if (!super)
2863 return -ENOMEM;
2b39e907
SL		 2864
2865 for (block = 0; block < 2; block++) {
2866 bh = sb_bread(sb, block);
2867 if (!bh) {
dcbb4c10
JP		 2868 f2fs_err(sbi, "Unable to read %dth superblock",
2869 block + 1);
2b39e907
SL		 2870 err = -EIO;
2871 continue;
2872 }
14d7e9de 2873
2b39e907 2874 /* sanity checking of raw super */
38fb6d0e
IZ		 2875 err = sanity_check_raw_super(sbi, bh);
2876 if (err) {
dcbb4c10
JP		 2877 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
2878 block + 1);
2b39e907
SL		 2879 brelse(bh);
2880 continue;
2881 }
14d7e9de 2882
2b39e907 2883 if (!*raw_super) {
fd694733
JK		 2884 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2885 sizeof(*super));
2b39e907
SL		 2886 *valid_super_block = block;
2887 *raw_super = super;
2888 }
2889 brelse(bh);
da554e48 2890 }
2891
2b39e907
SL		 2892 /* Fail to read any one of the superblocks*/
2893 if (err < 0)
2894 *recovery = 1;
da554e48 2895
da554e48 2896 /* No valid superblock */
2b39e907 2897 if (!*raw_super)
5222595d 2898 kvfree(super);
2b39e907
SL		 2899 else
2900 err = 0;
da554e48 2901
2b39e907 2902 return err;
14d7e9de 2903}
2904
fd694733 2905int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 2906{
5d909cdb 2907 struct buffer_head *bh;
d440c52d 2908 __u32 crc = 0;
26d815ad
JK		 2909 int err;
2910
df728b0f
JK		 2911 if ((recover && f2fs_readonly(sbi->sb)) ||
2912 bdev_read_only(sbi->sb->s_bdev)) {
2913 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 2914 return -EROFS;
df728b0f 2915 }
f2353d7b 2916
d440c52d 2917 /* we should update superblock crc here */
7beb01f7 2918 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 2919 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
2920 offsetof(struct f2fs_super_block, crc));
2921 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
2922 }
2923
fd694733 2924 /* write back-up superblock first */
0964fc1a 2925 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 2926 if (!bh)
2927 return -EIO;
fd694733 2928 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 2929 brelse(bh);
c5bda1c8
CY		 2930
2931 /* if we are in recovery path, skip writing valid superblock */
2932 if (recover || err)
5d909cdb 2933 return err;
26d815ad
JK		 2934
2935 /* write current valid superblock */
0964fc1a 2936 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 2937 if (!bh)
2938 return -EIO;
2939 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2940 brelse(bh);
2941 return err;
26d815ad
JK		 2942}
2943
3c62be17
JK		 2944static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
2945{
2946 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 2947 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 2948 int i;
2949
7bb3a371
MS		 2950 /* Initialize single device information */
2951 if (!RDEV(0).path[0]) {
2952 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 2953 return 0;
7bb3a371
MS		 2954 max_devices = 1;
2955 }
3c62be17 2956
7bb3a371
MS		 2957 /*
2958 * Initialize multiple devices information, or single
2959 * zoned block device information.
2960 */
026f0507
KC		 2961 sbi->devs = f2fs_kzalloc(sbi,
2962 array_size(max_devices,
2963 sizeof(struct f2fs_dev_info)),
2964 GFP_KERNEL);
7bb3a371
MS		 2965 if (!sbi->devs)
2966 return -ENOMEM;
3c62be17 2967
7bb3a371 2968 for (i = 0; i < max_devices; i++) {
3c62be17 2969
7bb3a371
MS		 2970 if (i > 0 && !RDEV(i).path[0])
2971 break;
2972
2973 if (max_devices == 1) {
2974 /* Single zoned block device mount */
2975 FDEV(0).bdev =
2976 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 2977 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 2978 } else {
2979 /* Multi-device mount */
2980 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
2981 FDEV(i).total_segments =
2982 le32_to_cpu(RDEV(i).total_segments);
2983 if (i == 0) {
2984 FDEV(i).start_blk = 0;
2985 FDEV(i).end_blk = FDEV(i).start_blk +
2986 (FDEV(i).total_segments <<
2987 sbi->log_blocks_per_seg) - 1 +
2988 le32_to_cpu(raw_super->segment0_blkaddr);
2989 } else {
2990 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
2991 FDEV(i).end_blk = FDEV(i).start_blk +
2992 (FDEV(i).total_segments <<
2993 sbi->log_blocks_per_seg) - 1;
2994 }
2995 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 2996 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 2997 }
3c62be17
JK		 2998 if (IS_ERR(FDEV(i).bdev))
2999 return PTR_ERR(FDEV(i).bdev);
3000
3001 /* to release errored devices */
3002 sbi->s_ndevs = i + 1;
3003
3004#ifdef CONFIG_BLK_DEV_ZONED
3005 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3006 !f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3007 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3c62be17
JK		 3008 return -EINVAL;
3009 }
3010 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3011 if (init_blkz_info(sbi, i)) {
dcbb4c10 3012 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3c62be17
JK		 3013 return -EINVAL;
3014 }
7bb3a371
MS		 3015 if (max_devices == 1)
3016 break;
dcbb4c10
JP		 3017 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3018 i, FDEV(i).path,
3019 FDEV(i).total_segments,
3020 FDEV(i).start_blk, FDEV(i).end_blk,
3021 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3022 "Host-aware" : "Host-managed");
3c62be17
JK		 3023 continue;
3024 }
3025#endif
dcbb4c10
JP		 3026 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3027 i, FDEV(i).path,
3028 FDEV(i).total_segments,
3029 FDEV(i).start_blk, FDEV(i).end_blk);
3030 }
3031 f2fs_info(sbi,
3032 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3033 return 0;
3034}
3035
84b89e5d
JK		 3036static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3037{
3038 struct f2fs_sm_info *sm_i = SM_I(sbi);
3039
3040 /* adjust parameters according to the volume size */
3041 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3042 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3043 sm_i->dcc_info->discard_granularity = 1;
3044 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3045 }
4cac90d5
CY		 3046
3047 sbi->readdir_ra = 1;
84b89e5d
JK		 3048}
3049
aff063e2
JK		 3050static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3051{
3052 struct f2fs_sb_info *sbi;
da554e48 3053 struct f2fs_super_block *raw_super;
aff063e2 3054 struct inode *root;
99e3e858 3055 int err;
aa2c8c43 3056 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3057 char *options = NULL;
e8240f65 3058 int recovery, i, valid_super_block;
8f1dbbbb 3059 struct curseg_info *seg_i;
aa2c8c43 3060 int retry_cnt = 1;
aff063e2 3061
ed2e621a 3062try_onemore:
da554e48 3063 err = -EINVAL;
3064 raw_super = NULL;
e8240f65 3065 valid_super_block = -1;
da554e48 3066 recovery = 0;
3067
aff063e2
JK		 3068 /* allocate memory for f2fs-specific super block info */
3069 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3070 if (!sbi)
3071 return -ENOMEM;
3072
df728b0f
JK		 3073 sbi->sb = sb;
3074
43b6573b
KM		 3075 /* Load the checksum driver */
3076 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3077 if (IS_ERR(sbi->s_chksum_driver)) {
dcbb4c10 3078 f2fs_err(sbi, "Cannot load crc32 driver.");
43b6573b
KM		 3079 err = PTR_ERR(sbi->s_chksum_driver);
3080 sbi->s_chksum_driver = NULL;
3081 goto free_sbi;
3082 }
3083
ff9234ad 3084 /* set a block size */
6bacf52f 3085 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
dcbb4c10 3086 f2fs_err(sbi, "unable to set blocksize");
aff063e2 3087 goto free_sbi;
a07ef784 3088 }
aff063e2 3089
df728b0f 3090 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3091 &recovery);
9076a75f
GZ		 3092 if (err)
3093 goto free_sbi;
3094
5fb08372 3095 sb->s_fs_info = sbi;
52763a4b
JK		 3096 sbi->raw_super = raw_super;
3097
704956ec 3098 /* precompute checksum seed for metadata */
7beb01f7 3099 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3100 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3101 sizeof(raw_super->uuid));
3102
d1b959c8
DLM		 3103 /*
3104 * The BLKZONED feature indicates that the drive was formatted with
3105 * zone alignment optimization. This is optional for host-aware
3106 * devices, but mandatory for host-managed zoned block devices.
3107 */
3108#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3109 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3110 f2fs_err(sbi, "Zoned block device support is not enabled");
1727f317 3111 err = -EOPNOTSUPP;
d1b959c8
DLM		 3112 goto free_sb_buf;
3113 }
d1b959c8 3114#endif
498c5e9f 3115 default_options(sbi);
aff063e2 3116 /* parse mount options */
dabc4a5c
JK		 3117 options = kstrdup((const char *)data, GFP_KERNEL);
3118 if (data && !options) {
3119 err = -ENOMEM;
aff063e2 3120 goto free_sb_buf;
dabc4a5c
JK		 3121 }
3122
3123 err = parse_options(sb, options);
3124 if (err)
3125 goto free_options;
aff063e2 3126
e0afc4d6
CY		 3127 sbi->max_file_blocks = max_file_blocks();
3128 sb->s_maxbytes = sbi->max_file_blocks <<
3129 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3130 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3131
0abd675e
CY		 3132#ifdef CONFIG_QUOTA
3133 sb->dq_op = &f2fs_quota_operations;
bc88ac96 3134 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3135 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3136
7beb01f7 3137 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3138 for (i = 0; i < MAXQUOTAS; i++) {
3139 if (f2fs_qf_ino(sbi->sb, i))
3140 sbi->nquota_files++;
3141 }
3142 }
0abd675e
CY		 3143#endif
3144
aff063e2 3145 sb->s_op = &f2fs_sops;
643fa961 3146#ifdef CONFIG_FS_ENCRYPTION
0b81d077 3147 sb->s_cop = &f2fs_cryptops;
95ae251f
EB		 3148#endif
3149#ifdef CONFIG_FS_VERITY
3150 sb->s_vop = &f2fs_verityops;
ffcc4182 3151#endif
aff063e2
JK		 3152 sb->s_xattr = f2fs_xattr_handlers;
3153 sb->s_export_op = &f2fs_export_ops;
3154 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3155 sb->s_time_gran = 1;
1751e8a6
LT		 3156 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3157 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3158 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3159 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3160
3161 /* init f2fs-specific super block info */
e8240f65 3162 sbi->valid_super_block = valid_super_block;
aff063e2 3163 mutex_init(&sbi->gc_mutex);
853137ce 3164 mutex_init(&sbi->writepages);
aff063e2 3165 mutex_init(&sbi->cp_mutex);
04f0b2ea 3166 mutex_init(&sbi->resize_mutex);
b3582c68 3167 init_rwsem(&sbi->node_write);
59c9081b 3168 init_rwsem(&sbi->node_change);
315df839
JK		 3169
3170 /* disallow all the data/node/meta page writes */
3171 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3172 spin_lock_init(&sbi->stat_lock);
971767ca 3173
b0af6d49
CY		 3174 /* init iostat info */
3175 spin_lock_init(&sbi->iostat_lock);
3176 sbi->iostat_enable = false;
3177
458e6197 3178 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3179 int n = (i == META) ? 1: NR_TEMP_TYPE;
3180 int j;
3181
c8606593
KC		 3182 sbi->write_io[i] =
3183 f2fs_kmalloc(sbi,
3184 array_size(n,
3185 sizeof(struct f2fs_bio_info)),
3186 GFP_KERNEL);
b63def91
CJ		 3187 if (!sbi->write_io[i]) {
3188 err = -ENOMEM;
0b2103e8 3189 goto free_bio_info;
b63def91 3190 }
a912b54d
JK		 3191
3192 for (j = HOT; j < n; j++) {
3193 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3194 sbi->write_io[i][j].sbi = sbi;
3195 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3196 spin_lock_init(&sbi->write_io[i][j].io_lock);
3197 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
a912b54d 3198 }
458e6197 3199 }
971767ca 3200
b873b798 3201 init_rwsem(&sbi->cp_rwsem);
db6ec53b 3202 init_rwsem(&sbi->quota_sem);
fb51b5ef 3203 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3204 init_sb_info(sbi);
3205
523be8a6
JK		 3206 err = init_percpu_info(sbi);
3207 if (err)
d7997e63 3208 goto free_bio_info;
523be8a6 3209
0a595eba
JK		 3210 if (F2FS_IO_SIZE(sbi) > 1) {
3211 sbi->write_io_dummy =
a3ebfe4f 3212 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3213 if (!sbi->write_io_dummy) {
3214 err = -ENOMEM;
d7997e63 3215 goto free_percpu;
1727f317 3216 }
0a595eba
JK		 3217 }
3218
aff063e2
JK		 3219 /* get an inode for meta space */
3220 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3221 if (IS_ERR(sbi->meta_inode)) {
dcbb4c10 3222 f2fs_err(sbi, "Failed to read F2FS meta data inode");
aff063e2 3223 err = PTR_ERR(sbi->meta_inode);
0a595eba 3224 goto free_io_dummy;
aff063e2
JK		 3225 }
3226
4d57b86d 3227 err = f2fs_get_valid_checkpoint(sbi);
a07ef784 3228 if (err) {
dcbb4c10 3229 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
aff063e2 3230 goto free_meta_inode;
a07ef784 3231 }
aff063e2 3232
af033b2a
CY		 3233 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3234 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3235 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3236 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3237 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3238 }
af033b2a 3239
04f0b2ea
QS		 3240 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3241 set_sbi_flag(sbi, SBI_NEED_FSCK);
3242
3c62be17
JK		 3243 /* Initialize device list */
3244 err = f2fs_scan_devices(sbi);
3245 if (err) {
dcbb4c10 3246 f2fs_err(sbi, "Failed to find devices");
3c62be17
JK		 3247 goto free_devices;
3248 }
3249
aff063e2
JK		 3250 sbi->total_valid_node_count =
3251 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3252 percpu_counter_set(&sbi->total_valid_inode_count,
3253 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3254 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3255 sbi->total_valid_block_count =
3256 le64_to_cpu(sbi->ckpt->valid_block_count);
3257 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3258 sbi->reserved_blocks = 0;
80d42145 3259 sbi->current_reserved_blocks = 0;
7e65be49 3260 limit_reserve_root(sbi);
41382ec4 3261
c227f912
CY		 3262 for (i = 0; i < NR_INODE_TYPE; i++) {
3263 INIT_LIST_HEAD(&sbi->inode_list[i]);
3264 spin_lock_init(&sbi->inode_lock[i]);
3265 }
040d2bb3 3266 mutex_init(&sbi->flush_lock);
aff063e2 3267
4d57b86d 3268 f2fs_init_extent_cache_info(sbi);
1dcc336b 3269
4d57b86d 3270 f2fs_init_ino_entry_info(sbi);
aff063e2 3271
50fa53ec
CY		 3272 f2fs_init_fsync_node_info(sbi);
3273
aff063e2 3274 /* setup f2fs internal modules */
4d57b86d 3275 err = f2fs_build_segment_manager(sbi);
a07ef784 3276 if (err) {
dcbb4c10
JP		 3277 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3278 err);
aff063e2 3279 goto free_sm;
a07ef784 3280 }
4d57b86d 3281 err = f2fs_build_node_manager(sbi);
a07ef784 3282 if (err) {
dcbb4c10
JP		 3283 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3284 err);
aff063e2 3285 goto free_nm;
a07ef784 3286 }
aff063e2 3287
8f1dbbbb
SL		 3288 /* For write statistics */
3289 if (sb->s_bdev->bd_part)
3290 sbi->sectors_written_start =
dbae2c55
MC		 3291 (u64)part_stat_read(sb->s_bdev->bd_part,
3292 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3293
3294 /* Read accumulated write IO statistics if exists */
3295 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3296 if (__exist_node_summaries(sbi))
3297 sbi->kbytes_written =
b2dde6fc 3298 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3299
4d57b86d 3300 f2fs_build_gc_manager(sbi);
aff063e2 3301
60aa4d55
ST		 3302 err = f2fs_build_stats(sbi);
3303 if (err)
3304 goto free_nm;
3305
aff063e2
JK		 3306 /* get an inode for node space */
3307 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3308 if (IS_ERR(sbi->node_inode)) {
dcbb4c10 3309 f2fs_err(sbi, "Failed to read node inode");
aff063e2 3310 err = PTR_ERR(sbi->node_inode);
60aa4d55 3311 goto free_stats;
aff063e2
JK		 3312 }
3313
aff063e2
JK		 3314 /* read root inode and dentry */
3315 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3316 if (IS_ERR(root)) {
dcbb4c10 3317 f2fs_err(sbi, "Failed to read root inode");
aff063e2 3318 err = PTR_ERR(root);
60aa4d55 3319 goto free_node_inode;
aff063e2 3320 }
bcbfbd60
CY		 3321 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3322 !root->i_size || !root->i_nlink) {
9d847950 3323 iput(root);
8f99a946 3324 err = -EINVAL;
60aa4d55 3325 goto free_node_inode;
8f99a946 3326 }
aff063e2
JK		 3327
3328 sb->s_root = d_make_root(root); /* allocate root dentry */
3329 if (!sb->s_root) {
3330 err = -ENOMEM;
025cdb16 3331 goto free_node_inode;
aff063e2
JK		 3332 }
3333
dc6b2055 3334 err = f2fs_register_sysfs(sbi);
b59d0bae 3335 if (err)
a398101a 3336 goto free_root_inode;
b59d0bae 3337
ea676733 3338#ifdef CONFIG_QUOTA
76cf05d7 3339 /* Enable quota usage during mount */
7beb01f7 3340 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3341 err = f2fs_enable_quotas(sb);
730746ce 3342 if (err)
dcbb4c10 3343 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
ea676733
JK		 3344 }
3345#endif
4b2414d0 3346 /* if there are nt orphan nodes free them */
4d57b86d 3347 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3348 if (err)
ea676733 3349 goto free_meta;
4b2414d0 3350
4354994f 3351 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3352 goto reset_checkpoint;
4354994f 3353
6437d1b0
JK		 3354 /* recover fsynced data */
3355 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
081d78c2
JK		 3356 /*
3357 * mount should be failed, when device has readonly mode, and
3358 * previous checkpoint was not done by clean system shutdown.
3359 */
b61af314
CY		 3360 if (f2fs_hw_is_readonly(sbi)) {
3361 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3362 err = -EROFS;
dcbb4c10 3363 f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
b61af314
CY		 3364 goto free_meta;
3365 }
dcbb4c10 3366 f2fs_info(sbi, "write access unavailable, skipping recovery");
b61af314 3367 goto reset_checkpoint;
081d78c2 3368 }
2adc3505
CY		 3369
3370 if (need_fsck)
3371 set_sbi_flag(sbi, SBI_NEED_FSCK);
3372
aa2c8c43
CY		 3373 if (skip_recovery)
3374 goto reset_checkpoint;
a468f0ef 3375
4d57b86d 3376 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3377 if (err < 0) {
aa2c8c43
CY		 3378 if (err != -ENOMEM)
3379 skip_recovery = true;
2adc3505 3380 need_fsck = true;
dcbb4c10
JP		 3381 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3382 err);
4b2414d0 3383 goto free_meta;
ed2e621a 3384 }
6781eabb 3385 } else {
4d57b86d 3386 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3387
3388 if (!f2fs_readonly(sb) && err > 0) {
3389 err = -EINVAL;
dcbb4c10 3390 f2fs_err(sbi, "Need to recover fsync data");
ea676733 3391 goto free_meta;
6781eabb 3392 }
6437d1b0 3393 }
aa2c8c43 3394reset_checkpoint:
4d57b86d 3395 /* f2fs_recover_fsync_data() cleared this already */
315df839 3396 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3397
4354994f
DR		 3398 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3399 err = f2fs_disable_checkpoint(sbi);
3400 if (err)
812a9597 3401 goto sync_free_meta;
4354994f
DR		 3402 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3403 f2fs_enable_checkpoint(sbi);
3404 }
3405
6437d1b0
JK		 3406 /*
3407 * If filesystem is not mounted as read-only then
3408 * do start the gc_thread.
3409 */
6c029932 3410 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
6437d1b0 3411 /* After POR, we can run background GC thread.*/
4d57b86d 3412 err = f2fs_start_gc_thread(sbi);
6437d1b0 3413 if (err)
812a9597 3414 goto sync_free_meta;
6437d1b0 3415 }
5222595d 3416 kvfree(options);
da554e48 3417
3418 /* recover broken superblock */
f2353d7b 3419 if (recovery) {
41214b3c 3420 err = f2fs_commit_super(sbi, true);
dcbb4c10
JP		 3421 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
3422 sbi->valid_super_block ? 1 : 2, err);
da554e48 3423 }
3424
bae01eda
CY		 3425 f2fs_join_shrinker(sbi);
3426
84b89e5d
JK		 3427 f2fs_tuning_parameters(sbi);
3428
dcbb4c10
JP		 3429 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
3430 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3431 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3432 f2fs_update_time(sbi, REQ_TIME);
db610a64 3433 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3434 return 0;
6437d1b0 3435
812a9597
JK		 3436sync_free_meta:
3437 /* safe to flush all the data */
3438 sync_filesystem(sbi->sb);
aa2c8c43 3439 retry_cnt = 0;
812a9597 3440
4b2414d0 3441free_meta:
ea676733 3442#ifdef CONFIG_QUOTA
26b5a079 3443 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3444 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3445 f2fs_quota_off_umount(sbi->sb);
3446#endif
4b2414d0 3447 /*
4d57b86d 3448 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3449 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3450 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3451 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3452 */
3453 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3454 /* evict some inodes being cached by GC */
3455 evict_inodes(sb);
dc6b2055 3456 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3457free_root_inode:
3458 dput(sb->s_root);
3459 sb->s_root = NULL;
3460free_node_inode:
4d57b86d 3461 f2fs_release_ino_entry(sbi, true);
bae01eda 3462 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3463 iput(sbi->node_inode);
7c77bf7d 3464 sbi->node_inode = NULL;
60aa4d55
ST		 3465free_stats:
3466 f2fs_destroy_stats(sbi);
aff063e2 3467free_nm:
4d57b86d 3468 f2fs_destroy_node_manager(sbi);
aff063e2 3469free_sm:
4d57b86d 3470 f2fs_destroy_segment_manager(sbi);
3c62be17
JK		 3471free_devices:
3472 destroy_device_list(sbi);
5222595d 3473 kvfree(sbi->ckpt);
aff063e2
JK		 3474free_meta_inode:
3475 make_bad_inode(sbi->meta_inode);
3476 iput(sbi->meta_inode);
7c77bf7d 3477 sbi->meta_inode = NULL;
0a595eba
JK		 3478free_io_dummy:
3479 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3480free_percpu:
3481 destroy_percpu_info(sbi);
3482free_bio_info:
a912b54d 3483 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3484 kvfree(sbi->write_io[i]);
d7997e63 3485free_options:
4b2414d0
CY		 3486#ifdef CONFIG_QUOTA
3487 for (i = 0; i < MAXQUOTAS; i++)
5222595d 3488 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3489#endif
5222595d 3490 kvfree(options);
aff063e2 3491free_sb_buf:
5222595d 3492 kvfree(raw_super);
aff063e2 3493free_sbi:
43b6573b
KM		 3494 if (sbi->s_chksum_driver)
3495 crypto_free_shash(sbi->s_chksum_driver);
5222595d 3496 kvfree(sbi);
ed2e621a
JK		 3497
3498 /* give only one another chance */
aa2c8c43
CY		 3499 if (retry_cnt > 0 && skip_recovery) {
3500 retry_cnt--;
ed2e621a
JK		 3501 shrink_dcache_sb(sb);
3502 goto try_onemore;
3503 }
aff063e2
JK		 3504 return err;
3505}
3506
3507static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3508 const char *dev_name, void *data)
3509{
3510 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3511}
3512
30a5537f
JK		 3513static void kill_f2fs_super(struct super_block *sb)
3514{
cce13252 3515 if (sb->s_root) {
1cb50f87
JK		 3516 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3517
3518 set_sbi_flag(sbi, SBI_IS_CLOSE);
3519 f2fs_stop_gc_thread(sbi);
3520 f2fs_stop_discard_thread(sbi);
3521
3522 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3523 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3524 struct cp_control cpc = {
3525 .reason = CP_UMOUNT,
3526 };
3527 f2fs_write_checkpoint(sbi, &cpc);
3528 }
1378752b
CY		 3529
3530 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3531 sb->s_flags &= ~SB_RDONLY;
cce13252 3532 }
30a5537f
JK		 3533 kill_block_super(sb);
3534}
3535
aff063e2
JK		 3536static struct file_system_type f2fs_fs_type = {
3537 .owner = THIS_MODULE,
3538 .name = "f2fs",
3539 .mount = f2fs_mount,
30a5537f 3540 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3541 .fs_flags = FS_REQUIRES_DEV,
3542};
7f78e035 3543MODULE_ALIAS_FS("f2fs");
aff063e2 3544
6e6093a8 3545static int __init init_inodecache(void)
aff063e2 3546{
5d097056
VD		 3547 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3548 sizeof(struct f2fs_inode_info), 0,
3549 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3550 if (!f2fs_inode_cachep)
aff063e2
JK		 3551 return -ENOMEM;
3552 return 0;
3553}
3554
3555static void destroy_inodecache(void)
3556{
3557 /*
3558 * Make sure all delayed rcu free inodes are flushed before we
3559 * destroy cache.
3560 */
3561 rcu_barrier();
3562 kmem_cache_destroy(f2fs_inode_cachep);
3563}
3564
3565static int __init init_f2fs_fs(void)
3566{
3567 int err;
3568
4071e67c
AP		 3569 if (PAGE_SIZE != F2FS_BLKSIZE) {
3570 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3571 PAGE_SIZE, F2FS_BLKSIZE);
3572 return -EINVAL;
3573 }
3574
c0508650
JK		 3575 f2fs_build_trace_ios();
3576
aff063e2
JK		 3577 err = init_inodecache();
3578 if (err)
3579 goto fail;
4d57b86d 3580 err = f2fs_create_node_manager_caches();
aff063e2 3581 if (err)
9890ff3f 3582 goto free_inodecache;
4d57b86d 3583 err = f2fs_create_segment_manager_caches();
aff063e2 3584 if (err)
9890ff3f 3585 goto free_node_manager_caches;
4d57b86d 3586 err = f2fs_create_checkpoint_caches();
aff063e2 3587 if (err)
06292073 3588 goto free_segment_manager_caches;
4d57b86d 3589 err = f2fs_create_extent_cache();
1dcc336b
CY		 3590 if (err)
3591 goto free_checkpoint_caches;
dc6b2055 3592 err = f2fs_init_sysfs();
a398101a 3593 if (err)
1dcc336b 3594 goto free_extent_cache;
2658e50d 3595 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3596 if (err)
a398101a 3597 goto free_sysfs;
2658e50d
JK		 3598 err = register_filesystem(&f2fs_fs_type);
3599 if (err)
3600 goto free_shrinker;
21acc07d 3601 f2fs_create_root_stats();
6dbb1796
EB		 3602 err = f2fs_init_post_read_processing();
3603 if (err)
3604 goto free_root_stats;
9890ff3f
ZH		 3605 return 0;
3606
6dbb1796
EB		 3607free_root_stats:
3608 f2fs_destroy_root_stats();
787c7b8c 3609 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3610free_shrinker:
3611 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3612free_sysfs:
dc6b2055 3613 f2fs_exit_sysfs();
1dcc336b 3614free_extent_cache:
4d57b86d 3615 f2fs_destroy_extent_cache();
9890ff3f 3616free_checkpoint_caches:
4d57b86d 3617 f2fs_destroy_checkpoint_caches();
7fd9e544 3618free_segment_manager_caches:
4d57b86d 3619 f2fs_destroy_segment_manager_caches();
9890ff3f 3620free_node_manager_caches:
4d57b86d 3621 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3622free_inodecache:
3623 destroy_inodecache();
aff063e2
JK		 3624fail:
3625 return err;
3626}
3627
3628static void __exit exit_f2fs_fs(void)
3629{
6dbb1796 3630 f2fs_destroy_post_read_processing();
4589d25d 3631 f2fs_destroy_root_stats();
aff063e2 3632 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3633 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3634 f2fs_exit_sysfs();
4d57b86d
CY		 3635 f2fs_destroy_extent_cache();
3636 f2fs_destroy_checkpoint_caches();
3637 f2fs_destroy_segment_manager_caches();
3638 f2fs_destroy_node_manager_caches();
aff063e2 3639 destroy_inodecache();
351f4fba 3640 f2fs_destroy_trace_ios();
aff063e2
JK		 3641}
3642
3643module_init(init_f2fs_fs)
3644module_exit(exit_f2fs_fs)
3645
3646MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3647MODULE_DESCRIPTION("Flash Friendly File System");
3648MODULE_LICENSE("GPL");
b4b9d34c 3649
Linux 6.x block layer and io_uring tree(s)