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f2fs: fix panic of IO alignment feature
[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
HP		 915 ret = generic_drop_inode(inode);
916 trace_f2fs_drop_inode(inode, ret);
917 return ret;
531ad7d5
JK		 918}
919
7c45729a 920int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 921{
0f18b462 922 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 923 int ret = 0;
0f18b462 924
0f18b462
JK		 925 spin_lock(&sbi->inode_lock[DIRTY_META]);
926 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 927 ret = 1;
928 } else {
929 set_inode_flag(inode, FI_DIRTY_INODE);
930 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 931 }
7c45729a
JK		 932 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
933 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 934 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 935 inc_page_count(sbi, F2FS_DIRTY_IMETA);
936 }
338bbfa0 937 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 938 return ret;
0f18b462
JK		 939}
940
941void f2fs_inode_synced(struct inode *inode)
942{
943 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
944
945 spin_lock(&sbi->inode_lock[DIRTY_META]);
946 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
947 spin_unlock(&sbi->inode_lock[DIRTY_META]);
948 return;
949 }
7c45729a
JK		 950 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
951 list_del_init(&F2FS_I(inode)->gdirty_list);
952 dec_page_count(sbi, F2FS_DIRTY_IMETA);
953 }
0f18b462 954 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 955 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 956 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 957 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 958}
959
b56ab837
JK		 960/*
961 * f2fs_dirty_inode() is called from __mark_inode_dirty()
962 *
963 * We should call set_dirty_inode to write the dirty inode through write_inode.
964 */
965static void f2fs_dirty_inode(struct inode *inode, int flags)
966{
967 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
968
969 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
970 inode->i_ino == F2FS_META_INO(sbi))
971 return;
972
973 if (flags == I_DIRTY_TIME)
974 return;
975
976 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
977 clear_inode_flag(inode, FI_AUTO_RECOVER);
978
7c45729a 979 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 980}
981
d01718a0 982static void f2fs_free_inode(struct inode *inode)
aff063e2 983{
2c58d548 984 fscrypt_free_inode(inode);
aff063e2
JK		 985 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
986}
987
523be8a6
JK		 988static void destroy_percpu_info(struct f2fs_sb_info *sbi)
989{
41382ec4 990 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 991 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 992}
993
3c62be17
JK		 994static void destroy_device_list(struct f2fs_sb_info *sbi)
995{
996 int i;
997
998 for (i = 0; i < sbi->s_ndevs; i++) {
999 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1000#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1001 kvfree(FDEV(i).blkz_seq);
3c62be17
JK		 1002#endif
1003 }
5222595d 1004 kvfree(sbi->devs);
3c62be17
JK		 1005}
1006
aff063e2
JK		 1007static void f2fs_put_super(struct super_block *sb)
1008{
1009 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1010 int i;
cf5c759f 1011 bool dropped;
aff063e2 1012
0abd675e 1013 f2fs_quota_off_umount(sb);
aff063e2 1014
2658e50d
JK		 1015 /* prevent remaining shrinker jobs */
1016 mutex_lock(&sbi->umount_mutex);
1017
85dc2f2c
JK		 1018 /*
1019 * We don't need to do checkpoint when superblock is clean.
1020 * But, the previous checkpoint was not done by umount, it needs to do
1021 * clean checkpoint again.
1022 */
4354994f
DR		 1023 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1024 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1025 struct cp_control cpc = {
1026 .reason = CP_UMOUNT,
1027 };
4d57b86d 1028 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1029 }
aff063e2 1030
4e6a8d9b 1031 /* be sure to wait for any on-going discard commands */
03f2c02d 1032 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1033
7d20c8ab
CY		 1034 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1035 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1036 struct cp_control cpc = {
1037 .reason = CP_UMOUNT | CP_TRIMMED,
1038 };
4d57b86d 1039 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1040 }
1041
cf779cab
JK		 1042 /*
1043 * normally superblock is clean, so we need to release this.
1044 * In addition, EIO will skip do checkpoint, we need this as well.
1045 */
4d57b86d 1046 f2fs_release_ino_entry(sbi, true);
6f12ac25 1047
2658e50d
JK		 1048 f2fs_leave_shrinker(sbi);
1049 mutex_unlock(&sbi->umount_mutex);
1050
17c19120 1051 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1052 f2fs_flush_merged_writes(sbi);
17c19120 1053
50fa53ec
CY		 1054 f2fs_wait_on_all_pages_writeback(sbi);
1055
1056 f2fs_bug_on(sbi, sbi->fsync_node_num);
1057
aff063e2 1058 iput(sbi->node_inode);
7c77bf7d
JK		 1059 sbi->node_inode = NULL;
1060
aff063e2 1061 iput(sbi->meta_inode);
7c77bf7d 1062 sbi->meta_inode = NULL;
aff063e2 1063
60aa4d55
ST		 1064 /*
1065 * iput() can update stat information, if f2fs_write_checkpoint()
1066 * above failed with error.
1067 */
1068 f2fs_destroy_stats(sbi);
1069
aff063e2 1070 /* destroy f2fs internal modules */
4d57b86d
CY		 1071 f2fs_destroy_node_manager(sbi);
1072 f2fs_destroy_segment_manager(sbi);
aff063e2 1073
5222595d 1074 kvfree(sbi->ckpt);
a398101a 1075
dc6b2055 1076 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1077
1078 sb->s_fs_info = NULL;
43b6573b
KM		 1079 if (sbi->s_chksum_driver)
1080 crypto_free_shash(sbi->s_chksum_driver);
5222595d 1081 kvfree(sbi->raw_super);
523be8a6 1082
3c62be17 1083 destroy_device_list(sbi);
b6895e8f 1084 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1085#ifdef CONFIG_QUOTA
1086 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1087 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1088#endif
523be8a6 1089 destroy_percpu_info(sbi);
a912b54d 1090 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d
JK		 1091 kvfree(sbi->write_io[i]);
1092 kvfree(sbi);
aff063e2
JK		 1093}
1094
1095int f2fs_sync_fs(struct super_block *sb, int sync)
1096{
1097 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1098 int err = 0;
aff063e2 1099
1f227a3e
JK		 1100 if (unlikely(f2fs_cp_error(sbi)))
1101 return 0;
4354994f
DR		 1102 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1103 return 0;
1f227a3e 1104
a2a4a7e4
NJ		 1105 trace_f2fs_sync_fs(sb, sync);
1106
4b2414d0
CY		 1107 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1108 return -EAGAIN;
1109
b7473754 1110 if (sync) {
d5053a34
JK		 1111 struct cp_control cpc;
1112
119ee914
JK		 1113 cpc.reason = __get_cp_reason(sbi);
1114
b7473754 1115 mutex_lock(&sbi->gc_mutex);
4d57b86d 1116 err = f2fs_write_checkpoint(sbi, &cpc);
b7473754 1117 mutex_unlock(&sbi->gc_mutex);
b7473754 1118 }
05ca3632 1119 f2fs_trace_ios(NULL, 1);
aff063e2 1120
c34f42e2 1121 return err;
aff063e2
JK		 1122}
1123
d6212a5f
CL		 1124static int f2fs_freeze(struct super_block *sb)
1125{
77888c1e 1126 if (f2fs_readonly(sb))
d6212a5f
CL		 1127 return 0;
1128
b4b9d34c
JK		 1129 /* IO error happened before */
1130 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1131 return -EIO;
1132
1133 /* must be clean, since sync_filesystem() was already called */
1134 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1135 return -EINVAL;
1136 return 0;
d6212a5f
CL		 1137}
1138
1139static int f2fs_unfreeze(struct super_block *sb)
1140{
1141 return 0;
1142}
1143
ddc34e32
CY		 1144#ifdef CONFIG_QUOTA
1145static int f2fs_statfs_project(struct super_block *sb,
1146 kprojid_t projid, struct kstatfs *buf)
1147{
1148 struct kqid qid;
1149 struct dquot *dquot;
1150 u64 limit;
1151 u64 curblock;
1152
1153 qid = make_kqid_projid(projid);
1154 dquot = dqget(sb, qid);
1155 if (IS_ERR(dquot))
1156 return PTR_ERR(dquot);
955ac6e5 1157 spin_lock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1158
1159 limit = (dquot->dq_dqb.dqb_bsoftlimit ?
1160 dquot->dq_dqb.dqb_bsoftlimit :
1161 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
1162 if (limit && buf->f_blocks > limit) {
1163 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1164 buf->f_blocks = limit;
1165 buf->f_bfree = buf->f_bavail =
1166 (buf->f_blocks > curblock) ?
1167 (buf->f_blocks - curblock) : 0;
1168 }
1169
1170 limit = dquot->dq_dqb.dqb_isoftlimit ?
1171 dquot->dq_dqb.dqb_isoftlimit :
1172 dquot->dq_dqb.dqb_ihardlimit;
1173 if (limit && buf->f_files > limit) {
1174 buf->f_files = limit;
1175 buf->f_ffree =
1176 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1177 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1178 }
1179
955ac6e5 1180 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1181 dqput(dquot);
1182 return 0;
1183}
1184#endif
1185
aff063e2
JK		 1186static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1187{
1188 struct super_block *sb = dentry->d_sb;
1189 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1190 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1191 block_t total_count, user_block_count, start_count;
0cc091d0 1192 u64 avail_node_count;
aff063e2
JK		 1193
1194 total_count = le64_to_cpu(sbi->raw_super->block_count);
1195 user_block_count = sbi->user_block_count;
1196 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1197 buf->f_type = F2FS_SUPER_MAGIC;
1198 buf->f_bsize = sbi->blocksize;
1199
1200 buf->f_blocks = total_count - start_count;
f66c027e 1201 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1202 sbi->current_reserved_blocks;
c9c8ed50
CY		 1203
1204 spin_lock(&sbi->stat_lock);
4354994f
DR		 1205 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1206 buf->f_bfree = 0;
1207 else
1208 buf->f_bfree -= sbi->unusable_block_count;
c9c8ed50 1209 spin_unlock(&sbi->stat_lock);
4354994f 1210
63189b78
CY		 1211 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1212 buf->f_bavail = buf->f_bfree -
1213 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1214 else
1215 buf->f_bavail = 0;
aff063e2 1216
292c196a
CY		 1217 avail_node_count = sbi->total_node_count - sbi->nquota_files -
1218 F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1219
1220 if (avail_node_count > user_block_count) {
1221 buf->f_files = user_block_count;
1222 buf->f_ffree = buf->f_bavail;
1223 } else {
1224 buf->f_files = avail_node_count;
1225 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1226 buf->f_bavail);
1227 }
aff063e2 1228
5a20d339 1229 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1230 buf->f_fsid.val[0] = (u32)id;
1231 buf->f_fsid.val[1] = (u32)(id >> 32);
1232
ddc34e32
CY		 1233#ifdef CONFIG_QUOTA
1234 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1235 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1236 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1237 }
1238#endif
aff063e2
JK		 1239 return 0;
1240}
1241
4b2414d0
CY		 1242static inline void f2fs_show_quota_options(struct seq_file *seq,
1243 struct super_block *sb)
1244{
1245#ifdef CONFIG_QUOTA
1246 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1247
63189b78 1248 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1249 char *fmtname = "";
1250
63189b78 1251 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1252 case QFMT_VFS_OLD:
1253 fmtname = "vfsold";
1254 break;
1255 case QFMT_VFS_V0:
1256 fmtname = "vfsv0";
1257 break;
1258 case QFMT_VFS_V1:
1259 fmtname = "vfsv1";
1260 break;
1261 }
1262 seq_printf(seq, ",jqfmt=%s", fmtname);
1263 }
1264
63189b78
CY		 1265 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1266 seq_show_option(seq, "usrjquota",
1267 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1268
63189b78
CY		 1269 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1270 seq_show_option(seq, "grpjquota",
1271 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1272
63189b78
CY		 1273 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1274 seq_show_option(seq, "prjjquota",
1275 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1276#endif
1277}
1278
aff063e2
JK		 1279static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1280{
1281 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1282
6aefd93b
JK		 1283 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1284 if (test_opt(sbi, FORCE_FG_GC))
1285 seq_printf(seq, ",background_gc=%s", "sync");
1286 else
1287 seq_printf(seq, ",background_gc=%s", "on");
1288 } else {
696c018c 1289 seq_printf(seq, ",background_gc=%s", "off");
6aefd93b 1290 }
aff063e2
JK		 1291 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1292 seq_puts(seq, ",disable_roll_forward");
1293 if (test_opt(sbi, DISCARD))
1294 seq_puts(seq, ",discard");
81621f97
ST		 1295 else
1296 seq_puts(seq, ",nodiscard");
aff063e2 1297 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1298 seq_puts(seq, ",no_heap");
1299 else
1300 seq_puts(seq, ",heap");
aff063e2
JK		 1301#ifdef CONFIG_F2FS_FS_XATTR
1302 if (test_opt(sbi, XATTR_USER))
1303 seq_puts(seq, ",user_xattr");
1304 else
1305 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1306 if (test_opt(sbi, INLINE_XATTR))
1307 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1308 else
1309 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1310 if (test_opt(sbi, INLINE_XATTR_SIZE))
1311 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1312 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1313#endif
1314#ifdef CONFIG_F2FS_FS_POSIX_ACL
1315 if (test_opt(sbi, POSIX_ACL))
1316 seq_puts(seq, ",acl");
1317 else
1318 seq_puts(seq, ",noacl");
1319#endif
1320 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1321 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1322 if (test_opt(sbi, INLINE_DATA))
1323 seq_puts(seq, ",inline_data");
75342797
WL		 1324 else
1325 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1326 if (test_opt(sbi, INLINE_DENTRY))
1327 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1328 else
1329 seq_puts(seq, ",noinline_dentry");
b270ad6f 1330 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1331 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1332 if (test_opt(sbi, NOBARRIER))
1333 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1334 if (test_opt(sbi, FASTBOOT))
1335 seq_puts(seq, ",fastboot");
89672159
CY		 1336 if (test_opt(sbi, EXTENT_CACHE))
1337 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1338 else
1339 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1340 if (test_opt(sbi, DATA_FLUSH))
1341 seq_puts(seq, ",data_flush");
36abef4e
JK		 1342
1343 seq_puts(seq, ",mode=");
1344 if (test_opt(sbi, ADAPTIVE))
1345 seq_puts(seq, "adaptive");
1346 else if (test_opt(sbi, LFS))
1347 seq_puts(seq, "lfs");
63189b78 1348 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1349 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1350 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1351 F2FS_OPTION(sbi).root_reserved_blocks,
1352 from_kuid_munged(&init_user_ns,
1353 F2FS_OPTION(sbi).s_resuid),
1354 from_kgid_munged(&init_user_ns,
1355 F2FS_OPTION(sbi).s_resgid));
ec91538d 1356 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1357 seq_printf(seq, ",io_bits=%u",
1358 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1359#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1360 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1361 seq_printf(seq, ",fault_injection=%u",
63189b78 1362 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1363 seq_printf(seq, ",fault_type=%u",
1364 F2FS_OPTION(sbi).fault_info.inject_type);
1365 }
0cc0dec2 1366#endif
0abd675e 1367#ifdef CONFIG_QUOTA
4b2414d0
CY		 1368 if (test_opt(sbi, QUOTA))
1369 seq_puts(seq, ",quota");
0abd675e
CY		 1370 if (test_opt(sbi, USRQUOTA))
1371 seq_puts(seq, ",usrquota");
1372 if (test_opt(sbi, GRPQUOTA))
1373 seq_puts(seq, ",grpquota");
5c57132e
CY		 1374 if (test_opt(sbi, PRJQUOTA))
1375 seq_puts(seq, ",prjquota");
0cc0dec2 1376#endif
4b2414d0 1377 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1378 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1379 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1380 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1381 seq_printf(seq, ",whint_mode=%s", "fs-based");
643fa961 1382#ifdef CONFIG_FS_ENCRYPTION
ff62af20
SY		 1383 if (F2FS_OPTION(sbi).test_dummy_encryption)
1384 seq_puts(seq, ",test_dummy_encryption");
1385#endif
aff063e2 1386
63189b78 1387 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1388 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1389 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1390 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1391
4354994f 1392 if (test_opt(sbi, DISABLE_CHECKPOINT))
4d3aed70
DR		 1393 seq_printf(seq, ",checkpoint=disable:%u",
1394 F2FS_OPTION(sbi).unusable_cap);
63189b78 1395 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1396 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1397 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1398 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1399 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1400 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
aff063e2
JK		 1401 return 0;
1402}
1403
498c5e9f
YH		 1404static void default_options(struct f2fs_sb_info *sbi)
1405{
1406 /* init some FS parameters */
63189b78
CY		 1407 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1408 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1409 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1410 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1411 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1412 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1413 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1414 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
498c5e9f
YH		 1415
1416 set_opt(sbi, BG_GC);
39133a50 1417 set_opt(sbi, INLINE_XATTR);
498c5e9f 1418 set_opt(sbi, INLINE_DATA);
97c1794a 1419 set_opt(sbi, INLINE_DENTRY);
3e72f721 1420 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1421 set_opt(sbi, NOHEAP);
4354994f 1422 clear_opt(sbi, DISABLE_CHECKPOINT);
4d3aed70 1423 F2FS_OPTION(sbi).unusable_cap = 0;
1751e8a6 1424 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1425 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1426 set_opt(sbi, DISCARD);
7beb01f7 1427 if (f2fs_sb_has_blkzoned(sbi))
a39e5365
CY		 1428 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1429 else
52763a4b 1430 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
498c5e9f
YH		 1431
1432#ifdef CONFIG_F2FS_FS_XATTR
1433 set_opt(sbi, XATTR_USER);
1434#endif
1435#ifdef CONFIG_F2FS_FS_POSIX_ACL
1436 set_opt(sbi, POSIX_ACL);
1437#endif
36dbd328 1438
d494500a 1439 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1440}
1441
ea676733
JK		 1442#ifdef CONFIG_QUOTA
1443static int f2fs_enable_quotas(struct super_block *sb);
1444#endif
4354994f
DR		 1445
1446static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1447{
812a9597 1448 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1449 struct cp_control cpc;
812a9597
JK		 1450 int err = 0;
1451 int ret;
4d3aed70 1452 block_t unusable;
4354994f 1453
812a9597 1454 if (s_flags & SB_RDONLY) {
dcbb4c10 1455 f2fs_err(sbi, "checkpoint=disable on readonly fs");
812a9597
JK		 1456 return -EINVAL;
1457 }
4354994f
DR		 1458 sbi->sb->s_flags |= SB_ACTIVE;
1459
4354994f
DR		 1460 f2fs_update_time(sbi, DISABLE_TIME);
1461
1462 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
8f31b466 1463 mutex_lock(&sbi->gc_mutex);
4354994f 1464 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1465 if (err == -ENODATA) {
1466 err = 0;
4354994f 1467 break;
812a9597 1468 }
8f31b466 1469 if (err && err != -EAGAIN)
812a9597 1470 break;
4354994f 1471 }
4354994f 1472
812a9597
JK		 1473 ret = sync_filesystem(sbi->sb);
1474 if (ret || err) {
1475 err = ret ? ret: err;
1476 goto restore_flag;
1477 }
4354994f 1478
4d3aed70
DR		 1479 unusable = f2fs_get_unusable_blocks(sbi);
1480 if (f2fs_disable_cp_again(sbi, unusable)) {
812a9597
JK		 1481 err = -EAGAIN;
1482 goto restore_flag;
1483 }
4354994f
DR		 1484
1485 mutex_lock(&sbi->gc_mutex);
1486 cpc.reason = CP_PAUSE;
1487 set_sbi_flag(sbi, SBI_CP_DISABLED);
896285ad
CY		 1488 err = f2fs_write_checkpoint(sbi, &cpc);
1489 if (err)
1490 goto out_unlock;
4354994f 1491
c9c8ed50 1492 spin_lock(&sbi->stat_lock);
4d3aed70 1493 sbi->unusable_block_count = unusable;
c9c8ed50
CY		 1494 spin_unlock(&sbi->stat_lock);
1495
896285ad 1496out_unlock:
4354994f 1497 mutex_unlock(&sbi->gc_mutex);
812a9597
JK		 1498restore_flag:
1499 sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */
1500 return err;
4354994f
DR		 1501}
1502
1503static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1504{
1505 mutex_lock(&sbi->gc_mutex);
1506 f2fs_dirty_to_prefree(sbi);
1507
1508 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1509 set_sbi_flag(sbi, SBI_IS_DIRTY);
1510 mutex_unlock(&sbi->gc_mutex);
1511
1512 f2fs_sync_fs(sbi->sb, 1);
1513}
1514
696c018c
NJ		 1515static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1516{
1517 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1518 struct f2fs_mount_info org_mount_opt;
0abd675e 1519 unsigned long old_sb_flags;
63189b78 1520 int err;
876dc59e
GZ		 1521 bool need_restart_gc = false;
1522 bool need_stop_gc = false;
9cd81ce3 1523 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f
DR		 1524 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1525 bool checkpoint_changed;
4b2414d0 1526#ifdef CONFIG_QUOTA
4b2414d0
CY		 1527 int i, j;
1528#endif
696c018c
NJ		 1529
1530 /*
1531 * Save the old mount options in case we
1532 * need to restore them.
1533 */
1534 org_mount_opt = sbi->mount_opt;
0abd675e 1535 old_sb_flags = sb->s_flags;
696c018c 1536
4b2414d0 1537#ifdef CONFIG_QUOTA
63189b78 1538 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1539 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1540 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1541 org_mount_opt.s_qf_names[i] =
1542 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1543 GFP_KERNEL);
1544 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1545 for (j = 0; j < i; j++)
5222595d 1546 kvfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1547 return -ENOMEM;
1548 }
1549 } else {
63189b78 1550 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1551 }
1552 }
1553#endif
1554
df728b0f 1555 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1556 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f 1557 err = f2fs_commit_super(sbi, false);
dcbb4c10
JP		 1558 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d",
1559 err);
df728b0f
JK		 1560 if (!err)
1561 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1562 }
1563
498c5e9f 1564 default_options(sbi);
26666c8a 1565
696c018c
NJ		 1566 /* parse mount options */
1567 err = parse_options(sb, data);
1568 if (err)
1569 goto restore_opts;
4354994f
DR		 1570 checkpoint_changed =
1571 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1572
1573 /*
1574 * Previous and new state of filesystem is RO,
876dc59e 1575 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1576 */
1751e8a6 1577 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1578 goto skip;
1579
ea676733 1580#ifdef CONFIG_QUOTA
1751e8a6 1581 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1582 err = dquot_suspend(sb, -1);
1583 if (err < 0)
1584 goto restore_opts;
4354994f 1585 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1586 /* dquot_resume needs RW */
1751e8a6 1587 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1588 if (sb_any_quota_suspended(sb)) {
1589 dquot_resume(sb, -1);
7beb01f7 1590 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1591 err = f2fs_enable_quotas(sb);
1592 if (err)
1593 goto restore_opts;
1594 }
0abd675e 1595 }
ea676733 1596#endif
9cd81ce3
CY		 1597 /* disallow enable/disable extent_cache dynamically */
1598 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1599 err = -EINVAL;
dcbb4c10 1600 f2fs_warn(sbi, "switch extent_cache option is not allowed");
9cd81ce3
CY		 1601 goto restore_opts;
1602 }
1603
4354994f
DR		 1604 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1605 err = -EINVAL;
dcbb4c10 1606 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
4354994f
DR		 1607 goto restore_opts;
1608 }
1609
696c018c
NJ		 1610 /*
1611 * We stop the GC thread if FS is mounted as RO
1612 * or if background_gc = off is passed in mount
1613 * option. Also sync the filesystem.
1614 */
1751e8a6 1615 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
696c018c 1616 if (sbi->gc_thread) {
4d57b86d 1617 f2fs_stop_gc_thread(sbi);
876dc59e 1618 need_restart_gc = true;
696c018c 1619 }
aba291b3 1620 } else if (!sbi->gc_thread) {
4d57b86d 1621 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1622 if (err)
1623 goto restore_opts;
876dc59e
GZ		 1624 need_stop_gc = true;
1625 }
1626
63189b78
CY		 1627 if (*flags & SB_RDONLY ||
1628 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1629 writeback_inodes_sb(sb, WB_REASON_SYNC);
1630 sync_inodes_sb(sb);
1631
1632 set_sbi_flag(sbi, SBI_IS_DIRTY);
1633 set_sbi_flag(sbi, SBI_IS_CLOSE);
1634 f2fs_sync_fs(sb, 1);
1635 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1636 }
1637
4354994f
DR		 1638 if (checkpoint_changed) {
1639 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1640 err = f2fs_disable_checkpoint(sbi);
1641 if (err)
1642 goto restore_gc;
1643 } else {
1644 f2fs_enable_checkpoint(sbi);
1645 }
1646 }
1647
876dc59e
GZ		 1648 /*
1649 * We stop issue flush thread if FS is mounted as RO
1650 * or if flush_merge is not passed in mount option.
1651 */
1751e8a6 1652 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1653 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1654 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1655 } else {
4d57b86d 1656 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1657 if (err)
a688b9d9 1658 goto restore_gc;
696c018c
NJ		 1659 }
1660skip:
4b2414d0
CY		 1661#ifdef CONFIG_QUOTA
1662 /* Release old quota file names */
1663 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1664 kvfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1665#endif
696c018c 1666 /* Update the POSIXACL Flag */
1751e8a6
LT		 1667 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1668 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1669
7e65be49 1670 limit_reserve_root(sbi);
095680f2 1671 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1672 return 0;
876dc59e
GZ		 1673restore_gc:
1674 if (need_restart_gc) {
4d57b86d 1675 if (f2fs_start_gc_thread(sbi))
dcbb4c10 1676 f2fs_warn(sbi, "background gc thread has stopped");
876dc59e 1677 } else if (need_stop_gc) {
4d57b86d 1678 f2fs_stop_gc_thread(sbi);
876dc59e 1679 }
696c018c 1680restore_opts:
4b2414d0 1681#ifdef CONFIG_QUOTA
63189b78 1682 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1683 for (i = 0; i < MAXQUOTAS; i++) {
5222595d 1684 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 1685 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1686 }
1687#endif
696c018c 1688 sbi->mount_opt = org_mount_opt;
0abd675e 1689 sb->s_flags = old_sb_flags;
696c018c
NJ		 1690 return err;
1691}
1692
0abd675e
CY		 1693#ifdef CONFIG_QUOTA
1694/* Read data from quotafile */
1695static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1696 size_t len, loff_t off)
1697{
1698 struct inode *inode = sb_dqopt(sb)->files[type];
1699 struct address_space *mapping = inode->i_mapping;
1700 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1701 int offset = off & (sb->s_blocksize - 1);
1702 int tocopy;
1703 size_t toread;
1704 loff_t i_size = i_size_read(inode);
1705 struct page *page;
1706 char *kaddr;
1707
1708 if (off > i_size)
1709 return 0;
1710
1711 if (off + len > i_size)
1712 len = i_size - off;
1713 toread = len;
1714 while (toread > 0) {
1715 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1716repeat:
02117b8a 1717 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1718 if (IS_ERR(page)) {
1719 if (PTR_ERR(page) == -ENOMEM) {
1720 congestion_wait(BLK_RW_ASYNC, HZ/50);
1721 goto repeat;
1722 }
af033b2a 1723 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1724 return PTR_ERR(page);
4e46a023 1725 }
0abd675e
CY		 1726
1727 lock_page(page);
1728
1729 if (unlikely(page->mapping != mapping)) {
1730 f2fs_put_page(page, 1);
1731 goto repeat;
1732 }
1733 if (unlikely(!PageUptodate(page))) {
1734 f2fs_put_page(page, 1);
af033b2a 1735 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1736 return -EIO;
1737 }
1738
1739 kaddr = kmap_atomic(page);
1740 memcpy(data, kaddr + offset, tocopy);
1741 kunmap_atomic(kaddr);
1742 f2fs_put_page(page, 1);
1743
1744 offset = 0;
1745 toread -= tocopy;
1746 data += tocopy;
1747 blkidx++;
1748 }
1749 return len;
1750}
1751
1752/* Write to quotafile */
1753static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1754 const char *data, size_t len, loff_t off)
1755{
1756 struct inode *inode = sb_dqopt(sb)->files[type];
1757 struct address_space *mapping = inode->i_mapping;
1758 const struct address_space_operations *a_ops = mapping->a_ops;
1759 int offset = off & (sb->s_blocksize - 1);
1760 size_t towrite = len;
1761 struct page *page;
1762 char *kaddr;
1763 int err = 0;
1764 int tocopy;
1765
1766 while (towrite > 0) {
1767 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1768 towrite);
4e46a023 1769retry:
0abd675e
CY		 1770 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1771 &page, NULL);
4e46a023
JK		 1772 if (unlikely(err)) {
1773 if (err == -ENOMEM) {
1774 congestion_wait(BLK_RW_ASYNC, HZ/50);
1775 goto retry;
1776 }
af033b2a 1777 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1778 break;
4e46a023 1779 }
0abd675e
CY		 1780
1781 kaddr = kmap_atomic(page);
1782 memcpy(kaddr + offset, data, tocopy);
1783 kunmap_atomic(kaddr);
1784 flush_dcache_page(page);
1785
1786 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1787 page, NULL);
1788 offset = 0;
1789 towrite -= tocopy;
1790 off += tocopy;
1791 data += tocopy;
1792 cond_resched();
1793 }
1794
1795 if (len == towrite)
6e5b5d41 1796 return err;
0abd675e
CY		 1797 inode->i_mtime = inode->i_ctime = current_time(inode);
1798 f2fs_mark_inode_dirty_sync(inode, false);
1799 return len - towrite;
1800}
1801
1802static struct dquot **f2fs_get_dquots(struct inode *inode)
1803{
1804 return F2FS_I(inode)->i_dquot;
1805}
1806
1807static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1808{
1809 return &F2FS_I(inode)->i_reserved_quota;
1810}
1811
4b2414d0
CY		 1812static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1813{
af033b2a 1814 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1815 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it");
af033b2a
CY		 1816 return 0;
1817 }
1818
63189b78
CY		 1819 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1820 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1821}
1822
ea676733 1823int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1824{
ea676733
JK		 1825 int enabled = 0;
1826 int i, err;
1827
7beb01f7 1828 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 1829 err = f2fs_enable_quotas(sbi->sb);
1830 if (err) {
dcbb4c10 1831 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err);
ea676733
JK		 1832 return 0;
1833 }
1834 return 1;
1835 }
4b2414d0
CY		 1836
1837 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 1838 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 1839 err = f2fs_quota_on_mount(sbi, i);
1840 if (!err) {
1841 enabled = 1;
1842 continue;
1843 }
dcbb4c10
JP		 1844 f2fs_err(sbi, "Cannot turn on quotas: %d on %d",
1845 err, i);
4b2414d0
CY		 1846 }
1847 }
ea676733
JK		 1848 return enabled;
1849}
1850
1851static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1852 unsigned int flags)
1853{
1854 struct inode *qf_inode;
1855 unsigned long qf_inum;
1856 int err;
1857
7beb01f7 1858 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 1859
1860 qf_inum = f2fs_qf_ino(sb, type);
1861 if (!qf_inum)
1862 return -EPERM;
1863
1864 qf_inode = f2fs_iget(sb, qf_inum);
1865 if (IS_ERR(qf_inode)) {
dcbb4c10 1866 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum);
ea676733
JK		 1867 return PTR_ERR(qf_inode);
1868 }
1869
1870 /* Don't account quota for quota files to avoid recursion */
1871 qf_inode->i_flags |= S_NOQUOTA;
1872 err = dquot_enable(qf_inode, type, format_id, flags);
1873 iput(qf_inode);
1874 return err;
1875}
1876
1877static int f2fs_enable_quotas(struct super_block *sb)
1878{
dcbb4c10 1879 struct f2fs_sb_info *sbi = F2FS_SB(sb);
ea676733
JK		 1880 int type, err = 0;
1881 unsigned long qf_inum;
1882 bool quota_mopt[MAXQUOTAS] = {
dcbb4c10
JP		 1883 test_opt(sbi, USRQUOTA),
1884 test_opt(sbi, GRPQUOTA),
1885 test_opt(sbi, PRJQUOTA),
ea676733
JK		 1886 };
1887
af033b2a 1888 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
dcbb4c10 1889 f2fs_err(sbi, "quota file may be corrupted, skip loading it");
af033b2a
CY		 1890 return 0;
1891 }
1892
1893 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1894
ea676733
JK		 1895 for (type = 0; type < MAXQUOTAS; type++) {
1896 qf_inum = f2fs_qf_ino(sb, type);
1897 if (qf_inum) {
1898 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1899 DQUOT_USAGE_ENABLED |
1900 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1901 if (err) {
dcbb4c10
JP		 1902 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.",
1903 type, err);
ea676733
JK		 1904 for (type--; type >= 0; type--)
1905 dquot_quota_off(sb, type);
af033b2a
CY		 1906 set_sbi_flag(F2FS_SB(sb),
1907 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 1908 return err;
1909 }
4b2414d0
CY		 1910 }
1911 }
ea676733 1912 return 0;
4b2414d0
CY		 1913}
1914
af033b2a 1915int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 1916{
af033b2a 1917 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 1918 struct quota_info *dqopt = sb_dqopt(sb);
1919 int cnt;
1920 int ret;
1921
db6ec53b
JK		 1922 /*
1923 * do_quotactl
1924 * f2fs_quota_sync
1925 * down_read(quota_sem)
1926 * dquot_writeback_dquots()
1927 * f2fs_dquot_commit
1928 * block_operation
1929 * down_read(quota_sem)
1930 */
1931 f2fs_lock_op(sbi);
1932
1933 down_read(&sbi->quota_sem);
0abd675e
CY		 1934 ret = dquot_writeback_dquots(sb, type);
1935 if (ret)
af033b2a 1936 goto out;
0abd675e
CY		 1937
1938 /*
1939 * Now when everything is written we can discard the pagecache so
1940 * that userspace sees the changes.
1941 */
1942 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 1943 struct address_space *mapping;
1944
0abd675e
CY		 1945 if (type != -1 && cnt != type)
1946 continue;
1947 if (!sb_has_quota_active(sb, cnt))
1948 continue;
1949
af033b2a
CY		 1950 mapping = dqopt->files[cnt]->i_mapping;
1951
1952 ret = filemap_fdatawrite(mapping);
0abd675e 1953 if (ret)
af033b2a
CY		 1954 goto out;
1955
1956 /* if we are using journalled quota */
1957 if (is_journalled_quota(sbi))
1958 continue;
1959
1960 ret = filemap_fdatawait(mapping);
1961 if (ret)
1962 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1963
1964 inode_lock(dqopt->files[cnt]);
1965 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
1966 inode_unlock(dqopt->files[cnt]);
1967 }
af033b2a
CY		 1968out:
1969 if (ret)
1970 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
db6ec53b
JK		 1971 up_read(&sbi->quota_sem);
1972 f2fs_unlock_op(sbi);
af033b2a 1973 return ret;
0abd675e
CY		 1974}
1975
1976static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
1977 const struct path *path)
1978{
1979 struct inode *inode;
1980 int err;
1981
9a20d391 1982 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 1983 if (err)
1984 return err;
1985
1986 err = dquot_quota_on(sb, type, format_id, path);
1987 if (err)
1988 return err;
1989
1990 inode = d_inode(path->dentry);
1991
1992 inode_lock(inode);
59c84408 1993 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 1994 f2fs_set_inode_flags(inode);
0abd675e
CY		 1995 inode_unlock(inode);
1996 f2fs_mark_inode_dirty_sync(inode, false);
1997
1998 return 0;
1999}
2000
2001static int f2fs_quota_off(struct super_block *sb, int type)
2002{
2003 struct inode *inode = sb_dqopt(sb)->files[type];
2004 int err;
2005
2006 if (!inode || !igrab(inode))
2007 return dquot_quota_off(sb, type);
2008
cda9cc59
YH		 2009 err = f2fs_quota_sync(sb, type);
2010 if (err)
2011 goto out_put;
0abd675e
CY		 2012
2013 err = dquot_quota_off(sb, type);
7beb01f7 2014 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2015 goto out_put;
2016
2017 inode_lock(inode);
59c84408 2018 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2019 f2fs_set_inode_flags(inode);
0abd675e
CY		 2020 inode_unlock(inode);
2021 f2fs_mark_inode_dirty_sync(inode, false);
2022out_put:
2023 iput(inode);
2024 return err;
2025}
2026
4b2414d0 2027void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2028{
2029 int type;
cda9cc59
YH		 2030 int err;
2031
2032 for (type = 0; type < MAXQUOTAS; type++) {
2033 err = f2fs_quota_off(sb, type);
2034 if (err) {
2035 int ret = dquot_quota_off(sb, type);
0abd675e 2036
dcbb4c10
JP		 2037 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.",
2038 type, err, ret);
af033b2a 2039 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2040 }
2041 }
0e0667b6
JK		 2042 /*
2043 * In case of checkpoint=disable, we must flush quota blocks.
2044 * This can cause NULL exception for node_inode in end_io, since
2045 * put_super already dropped it.
2046 */
2047 sync_filesystem(sb);
0abd675e
CY		 2048}
2049
26b5a079
SY		 2050static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2051{
2052 struct quota_info *dqopt = sb_dqopt(sb);
2053 int type;
2054
2055 for (type = 0; type < MAXQUOTAS; type++) {
2056 if (!dqopt->files[type])
2057 continue;
2058 f2fs_inode_synced(dqopt->files[type]);
2059 }
2060}
2061
af033b2a
CY		 2062static int f2fs_dquot_commit(struct dquot *dquot)
2063{
db6ec53b 2064 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2065 int ret;
2066
db6ec53b 2067 down_read(&sbi->quota_sem);
af033b2a
CY		 2068 ret = dquot_commit(dquot);
2069 if (ret < 0)
db6ec53b
JK		 2070 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2071 up_read(&sbi->quota_sem);
af033b2a
CY		 2072 return ret;
2073}
2074
2075static int f2fs_dquot_acquire(struct dquot *dquot)
2076{
db6ec53b 2077 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2078 int ret;
2079
db6ec53b 2080 down_read(&sbi->quota_sem);
af033b2a
CY		 2081 ret = dquot_acquire(dquot);
2082 if (ret < 0)
db6ec53b
JK		 2083 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2084 up_read(&sbi->quota_sem);
af033b2a
CY		 2085 return ret;
2086}
2087
2088static int f2fs_dquot_release(struct dquot *dquot)
2089{
db6ec53b 2090 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb);
af033b2a
CY		 2091 int ret;
2092
db6ec53b 2093 down_read(&sbi->quota_sem);
af033b2a
CY		 2094 ret = dquot_release(dquot);
2095 if (ret < 0)
db6ec53b
JK		 2096 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2097 up_read(&sbi->quota_sem);
af033b2a
CY		 2098 return ret;
2099}
2100
2101static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2102{
2103 struct super_block *sb = dquot->dq_sb;
2104 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2105 int ret;
2106
db6ec53b 2107 down_read(&sbi->quota_sem);
af033b2a
CY		 2108 ret = dquot_mark_dquot_dirty(dquot);
2109
2110 /* if we are using journalled quota */
2111 if (is_journalled_quota(sbi))
2112 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2113
db6ec53b 2114 up_read(&sbi->quota_sem);
af033b2a
CY		 2115 return ret;
2116}
2117
2118static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2119{
db6ec53b 2120 struct f2fs_sb_info *sbi = F2FS_SB(sb);
af033b2a
CY		 2121 int ret;
2122
db6ec53b 2123 down_read(&sbi->quota_sem);
af033b2a
CY		 2124 ret = dquot_commit_info(sb, type);
2125 if (ret < 0)
db6ec53b
JK		 2126 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2127 up_read(&sbi->quota_sem);
af033b2a
CY		 2128 return ret;
2129}
26b5a079 2130
94b1e10e 2131static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2132{
2133 *projid = F2FS_I(inode)->i_projid;
2134 return 0;
2135}
2136
0abd675e
CY		 2137static const struct dquot_operations f2fs_quota_operations = {
2138 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2139 .write_dquot = f2fs_dquot_commit,
2140 .acquire_dquot = f2fs_dquot_acquire,
2141 .release_dquot = f2fs_dquot_release,
2142 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2143 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2144 .alloc_dquot = dquot_alloc,
2145 .destroy_dquot = dquot_destroy,
5c57132e 2146 .get_projid = f2fs_get_projid,
0abd675e
CY		 2147 .get_next_id = dquot_get_next_id,
2148};
2149
2150static const struct quotactl_ops f2fs_quotactl_ops = {
2151 .quota_on = f2fs_quota_on,
2152 .quota_off = f2fs_quota_off,
2153 .quota_sync = f2fs_quota_sync,
2154 .get_state = dquot_get_state,
2155 .set_info = dquot_set_dqinfo,
2156 .get_dqblk = dquot_get_dqblk,
2157 .set_dqblk = dquot_set_dqblk,
2158 .get_nextdqblk = dquot_get_next_dqblk,
2159};
2160#else
af033b2a
CY		 2161int f2fs_quota_sync(struct super_block *sb, int type)
2162{
2163 return 0;
2164}
2165
4b2414d0 2166void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2167{
2168}
2169#endif
2170
f62fc9f9 2171static const struct super_operations f2fs_sops = {
aff063e2 2172 .alloc_inode = f2fs_alloc_inode,
d01718a0 2173 .free_inode = f2fs_free_inode,
531ad7d5 2174 .drop_inode = f2fs_drop_inode,
aff063e2 2175 .write_inode = f2fs_write_inode,
b3783873 2176 .dirty_inode = f2fs_dirty_inode,
aff063e2 2177 .show_options = f2fs_show_options,
0abd675e
CY		 2178#ifdef CONFIG_QUOTA
2179 .quota_read = f2fs_quota_read,
2180 .quota_write = f2fs_quota_write,
2181 .get_dquots = f2fs_get_dquots,
2182#endif
aff063e2
JK		 2183 .evict_inode = f2fs_evict_inode,
2184 .put_super = f2fs_put_super,
2185 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2186 .freeze_fs = f2fs_freeze,
2187 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2188 .statfs = f2fs_statfs,
696c018c 2189 .remount_fs = f2fs_remount,
aff063e2
JK		 2190};
2191
643fa961 2192#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 2193static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2194{
2195 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2196 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2197 ctx, len, NULL);
2198}
2199
2200static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2201 void *fs_data)
2202{
b7c409de
SY		 2203 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2204
2205 /*
2206 * Encrypting the root directory is not allowed because fsck
2207 * expects lost+found directory to exist and remain unencrypted
2208 * if LOST_FOUND feature is enabled.
2209 *
2210 */
7beb01f7 2211 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2212 inode->i_ino == F2FS_ROOT_INO(sbi))
2213 return -EPERM;
2214
0b81d077
JK		 2215 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2216 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2217 ctx, len, fs_data, XATTR_CREATE);
2218}
2219
ff62af20
SY		 2220static bool f2fs_dummy_context(struct inode *inode)
2221{
2222 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2223}
2224
6f69f0ed 2225static const struct fscrypt_operations f2fs_cryptops = {
a5d431ef 2226 .key_prefix = "f2fs:",
0b81d077
JK		 2227 .get_context = f2fs_get_context,
2228 .set_context = f2fs_set_context,
ff62af20 2229 .dummy_context = f2fs_dummy_context,
0b81d077 2230 .empty_dir = f2fs_empty_dir,
e12ee683 2231 .max_namelen = F2FS_NAME_LEN,
0b81d077 2232};
0b81d077
JK		 2233#endif
2234
aff063e2
JK		 2235static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2236 u64 ino, u32 generation)
2237{
2238 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2239 struct inode *inode;
2240
4d57b86d 2241 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2242 return ERR_PTR(-ESTALE);
aff063e2
JK		 2243
2244 /*
2245 * f2fs_iget isn't quite right if the inode is currently unallocated!
2246 * However f2fs_iget currently does appropriate checks to handle stale
2247 * inodes so everything is OK.
2248 */
2249 inode = f2fs_iget(sb, ino);
2250 if (IS_ERR(inode))
2251 return ERR_CAST(inode);
6bacf52f 2252 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2253 /* we didn't find the right inode.. */
2254 iput(inode);
2255 return ERR_PTR(-ESTALE);
2256 }
2257 return inode;
2258}
2259
2260static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2261 int fh_len, int fh_type)
2262{
2263 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2264 f2fs_nfs_get_inode);
2265}
2266
2267static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2268 int fh_len, int fh_type)
2269{
2270 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2271 f2fs_nfs_get_inode);
2272}
2273
2274static const struct export_operations f2fs_export_ops = {
2275 .fh_to_dentry = f2fs_fh_to_dentry,
2276 .fh_to_parent = f2fs_fh_to_parent,
2277 .get_parent = f2fs_get_parent,
2278};
2279
e0afc4d6 2280static loff_t max_file_blocks(void)
aff063e2 2281{
7a2af766 2282 loff_t result = 0;
d02a6e61 2283 loff_t leaf_count = DEF_ADDRS_PER_BLOCK;
aff063e2 2284
7a2af766
CY		 2285 /*
2286 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2287 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2288 * space in inode.i_addr, it will be more safe to reassign
2289 * result as zero.
2290 */
2291
aff063e2
JK		 2292 /* two direct node blocks */
2293 result += (leaf_count * 2);
2294
2295 /* two indirect node blocks */
2296 leaf_count *= NIDS_PER_BLOCK;
2297 result += (leaf_count * 2);
2298
2299 /* one double indirect node block */
2300 leaf_count *= NIDS_PER_BLOCK;
2301 result += leaf_count;
2302
aff063e2
JK		 2303 return result;
2304}
2305
fd694733
JK		 2306static int __f2fs_commit_super(struct buffer_head *bh,
2307 struct f2fs_super_block *super)
2308{
2309 lock_buffer(bh);
2310 if (super)
2311 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2312 set_buffer_dirty(bh);
2313 unlock_buffer(bh);
2314
2315 /* it's rare case, we can do fua all the time */
3adc5fcb 2316 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2317}
2318
df728b0f 2319static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2320 struct buffer_head *bh)
9a59b62f 2321{
fd694733
JK		 2322 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2323 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2324 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2325 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2326 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2327 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2328 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2329 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2330 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2331 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2332 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2333 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2334 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2335 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2336 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2337 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2338 u64 main_end_blkaddr = main_blkaddr +
2339 (segment_count_main << log_blocks_per_seg);
2340 u64 seg_end_blkaddr = segment0_blkaddr +
2341 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2342
2343 if (segment0_blkaddr != cp_blkaddr) {
dcbb4c10
JP		 2344 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2345 segment0_blkaddr, cp_blkaddr);
9a59b62f
CY		 2346 return true;
2347 }
2348
2349 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2350 sit_blkaddr) {
dcbb4c10
JP		 2351 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2352 cp_blkaddr, sit_blkaddr,
2353 segment_count_ckpt << log_blocks_per_seg);
9a59b62f
CY		 2354 return true;
2355 }
2356
2357 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2358 nat_blkaddr) {
dcbb4c10
JP		 2359 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2360 sit_blkaddr, nat_blkaddr,
2361 segment_count_sit << log_blocks_per_seg);
9a59b62f
CY		 2362 return true;
2363 }
2364
2365 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2366 ssa_blkaddr) {
dcbb4c10
JP		 2367 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2368 nat_blkaddr, ssa_blkaddr,
2369 segment_count_nat << log_blocks_per_seg);
9a59b62f
CY		 2370 return true;
2371 }
2372
2373 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2374 main_blkaddr) {
dcbb4c10
JP		 2375 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2376 ssa_blkaddr, main_blkaddr,
2377 segment_count_ssa << log_blocks_per_seg);
9a59b62f
CY		 2378 return true;
2379 }
2380
fd694733 2381 if (main_end_blkaddr > seg_end_blkaddr) {
dcbb4c10
JP		 2382 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
2383 main_blkaddr,
2384 segment0_blkaddr +
2385 (segment_count << log_blocks_per_seg),
2386 segment_count_main << log_blocks_per_seg);
9a59b62f 2387 return true;
fd694733
JK		 2388 } else if (main_end_blkaddr < seg_end_blkaddr) {
2389 int err = 0;
2390 char *res;
2391
2392 /* fix in-memory information all the time */
2393 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2394 segment0_blkaddr) >> log_blocks_per_seg);
2395
2396 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2397 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2398 res = "internally";
2399 } else {
2400 err = __f2fs_commit_super(bh, NULL);
2401 res = err ? "failed" : "done";
2402 }
dcbb4c10
JP		 2403 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%u) block(%u)",
2404 res, main_blkaddr,
2405 segment0_blkaddr +
2406 (segment_count << log_blocks_per_seg),
2407 segment_count_main << log_blocks_per_seg);
fd694733
JK		 2408 if (err)
2409 return true;
9a59b62f 2410 }
9a59b62f
CY		 2411 return false;
2412}
2413
df728b0f 2414static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2415 struct buffer_head *bh)
aff063e2 2416{
0cfe75c5
JK		 2417 block_t segment_count, segs_per_sec, secs_per_zone;
2418 block_t total_sections, blocks_per_seg;
fd694733
JK		 2419 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2420 (bh->b_data + F2FS_SUPER_OFFSET);
aff063e2 2421 unsigned int blocksize;
d440c52d
JZ		 2422 size_t crc_offset = 0;
2423 __u32 crc = 0;
2424
38fb6d0e
IZ		 2425 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) {
2426 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)",
2427 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
2428 return -EINVAL;
2429 }
2430
d440c52d 2431 /* Check checksum_offset and crc in superblock */
7beb01f7 2432 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2433 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2434 if (crc_offset !=
2435 offsetof(struct f2fs_super_block, crc)) {
dcbb4c10
JP		 2436 f2fs_info(sbi, "Invalid SB checksum offset: %zu",
2437 crc_offset);
38fb6d0e 2438 return -EFSCORRUPTED;
d440c52d
JZ		 2439 }
2440 crc = le32_to_cpu(raw_super->crc);
2441 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
dcbb4c10 2442 f2fs_info(sbi, "Invalid SB checksum value: %u", crc);
38fb6d0e 2443 return -EFSCORRUPTED;
d440c52d
JZ		 2444 }
2445 }
aff063e2 2446
5c9b4692 2447 /* Currently, support only 4KB page cache size */
09cbfeaf 2448 if (F2FS_BLKSIZE != PAGE_SIZE) {
dcbb4c10
JP		 2449 f2fs_info(sbi, "Invalid page_cache_size (%lu), supports only 4KB",
2450 PAGE_SIZE);
38fb6d0e 2451 return -EFSCORRUPTED;
5c9b4692 2452 }
2453
aff063e2
JK		 2454 /* Currently, support only 4KB block size */
2455 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2456 if (blocksize != F2FS_BLKSIZE) {
dcbb4c10
JP		 2457 f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
2458 blocksize);
38fb6d0e 2459 return -EFSCORRUPTED;
a07ef784 2460 }
5c9b4692 2461
9a59b62f
CY		 2462 /* check log blocks per segment */
2463 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
dcbb4c10
JP		 2464 f2fs_info(sbi, "Invalid log blocks per segment (%u)",
2465 le32_to_cpu(raw_super->log_blocks_per_seg));
38fb6d0e 2466 return -EFSCORRUPTED;
9a59b62f
CY		 2467 }
2468
55cf9cb6
CY		 2469 /* Currently, support 512/1024/2048/4096 bytes sector size */
2470 if (le32_to_cpu(raw_super->log_sectorsize) >
2471 F2FS_MAX_LOG_SECTOR_SIZE ||
2472 le32_to_cpu(raw_super->log_sectorsize) <
2473 F2FS_MIN_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2474 f2fs_info(sbi, "Invalid log sectorsize (%u)",
2475 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2476 return -EFSCORRUPTED;
a07ef784 2477 }
55cf9cb6
CY		 2478 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2479 le32_to_cpu(raw_super->log_sectorsize) !=
2480 F2FS_MAX_LOG_SECTOR_SIZE) {
dcbb4c10
JP		 2481 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)",
2482 le32_to_cpu(raw_super->log_sectors_per_block),
2483 le32_to_cpu(raw_super->log_sectorsize));
38fb6d0e 2484 return -EFSCORRUPTED;
a07ef784 2485 }
9a59b62f 2486
0cfe75c5
JK		 2487 segment_count = le32_to_cpu(raw_super->segment_count);
2488 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2489 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2490 total_sections = le32_to_cpu(raw_super->section_count);
2491
2492 /* blocks_per_seg should be 512, given the above check */
2493 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2494
2495 if (segment_count > F2FS_MAX_SEGMENT ||
2496 segment_count < F2FS_MIN_SEGMENTS) {
dcbb4c10 2497 f2fs_info(sbi, "Invalid segment count (%u)", segment_count);
38fb6d0e 2498 return -EFSCORRUPTED;
0cfe75c5
JK		 2499 }
2500
2501 if (total_sections > segment_count ||
2502 total_sections < F2FS_MIN_SEGMENTS ||
2503 segs_per_sec > segment_count || !segs_per_sec) {
dcbb4c10
JP		 2504 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)",
2505 segment_count, total_sections, segs_per_sec);
38fb6d0e 2506 return -EFSCORRUPTED;
0cfe75c5
JK		 2507 }
2508
2509 if ((segment_count / segs_per_sec) < total_sections) {
dcbb4c10
JP		 2510 f2fs_info(sbi, "Small segment_count (%u < %u * %u)",
2511 segment_count, segs_per_sec, total_sections);
38fb6d0e 2512 return -EFSCORRUPTED;
0cfe75c5
JK		 2513 }
2514
88960068 2515 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
dcbb4c10
JP		 2516 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)",
2517 segment_count, le64_to_cpu(raw_super->block_count));
38fb6d0e 2518 return -EFSCORRUPTED;
0cfe75c5
JK		 2519 }
2520
42bf546c 2521 if (secs_per_zone > total_sections || !secs_per_zone) {
dcbb4c10
JP		 2522 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
2523 secs_per_zone, total_sections);
38fb6d0e 2524 return -EFSCORRUPTED;
0cfe75c5
JK		 2525 }
2526 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2527 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2528 (le32_to_cpu(raw_super->extension_count) +
2529 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
dcbb4c10
JP		 2530 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)",
2531 le32_to_cpu(raw_super->extension_count),
2532 raw_super->hot_ext_count,
2533 F2FS_MAX_EXTENSION);
38fb6d0e 2534 return -EFSCORRUPTED;
0cfe75c5
JK		 2535 }
2536
2537 if (le32_to_cpu(raw_super->cp_payload) >
2538 (blocks_per_seg - F2FS_CP_PACKS)) {
dcbb4c10
JP		 2539 f2fs_info(sbi, "Insane cp_payload (%u > %u)",
2540 le32_to_cpu(raw_super->cp_payload),
2541 blocks_per_seg - F2FS_CP_PACKS);
38fb6d0e 2542 return -EFSCORRUPTED;
0cfe75c5
JK		 2543 }
2544
9a59b62f
CY		 2545 /* check reserved ino info */
2546 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2547 le32_to_cpu(raw_super->meta_ino) != 2 ||
2548 le32_to_cpu(raw_super->root_ino) != 3) {
dcbb4c10
JP		 2549 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2550 le32_to_cpu(raw_super->node_ino),
2551 le32_to_cpu(raw_super->meta_ino),
2552 le32_to_cpu(raw_super->root_ino));
38fb6d0e 2553 return -EFSCORRUPTED;
9a59b62f
CY		 2554 }
2555
2556 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2557 if (sanity_check_area_boundary(sbi, bh))
38fb6d0e 2558 return -EFSCORRUPTED;
9a59b62f 2559
aff063e2
JK		 2560 return 0;
2561}
2562
4d57b86d 2563int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2564{
2565 unsigned int total, fsmeta;
577e3495
JK		 2566 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2567 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2568 unsigned int ovp_segments, reserved_segments;
15d3042a 2569 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2570 unsigned int sit_segs, nat_segs;
2571 unsigned int sit_bitmap_size, nat_bitmap_size;
2572 unsigned int log_blocks_per_seg;
9dc956b2 2573 unsigned int segment_count_main;
e494c2f9 2574 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 2575 block_t user_block_count, valid_user_blocks;
2576 block_t avail_node_count, valid_node_count;
042be0f8 2577 int i, j;
aff063e2
JK		 2578
2579 total = le32_to_cpu(raw_super->segment_count);
2580 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2581 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2582 fsmeta += sit_segs;
2583 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2584 fsmeta += nat_segs;
aff063e2
JK		 2585 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2586 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2587
6bacf52f 2588 if (unlikely(fsmeta >= total))
aff063e2 2589 return 1;
577e3495 2590
2040fce8
JK		 2591 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2592 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2593
2594 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2595 ovp_segments == 0 || reserved_segments == 0)) {
dcbb4c10 2596 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
2040fce8
JK		 2597 return 1;
2598 }
2599
9dc956b2
CY		 2600 user_block_count = le64_to_cpu(ckpt->user_block_count);
2601 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2602 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2603 if (!user_block_count || user_block_count >=
2604 segment_count_main << log_blocks_per_seg) {
dcbb4c10
JP		 2605 f2fs_err(sbi, "Wrong user_block_count: %u",
2606 user_block_count);
9dc956b2
CY		 2607 return 1;
2608 }
2609
7b63f72f
CY		 2610 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2611 if (valid_user_blocks > user_block_count) {
dcbb4c10
JP		 2612 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u",
2613 valid_user_blocks, user_block_count);
7b63f72f
CY		 2614 return 1;
2615 }
2616
2617 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
2618 avail_node_count = sbi->total_node_count - sbi->nquota_files -
2619 F2FS_RESERVED_NODE_NUM;
2620 if (valid_node_count > avail_node_count) {
dcbb4c10
JP		 2621 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u",
2622 valid_node_count, avail_node_count);
7b63f72f
CY		 2623 return 1;
2624 }
2625
15d3042a
JQ		 2626 main_segs = le32_to_cpu(raw_super->segment_count_main);
2627 blocks_per_seg = sbi->blocks_per_seg;
2628
2629 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2630 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2631 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2632 return 1;
042be0f8
CY		 2633 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2634 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2635 le32_to_cpu(ckpt->cur_node_segno[j])) {
dcbb4c10
JP		 2636 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u",
2637 i, j,
2638 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2639 return 1;
2640 }
2641 }
15d3042a
JQ		 2642 }
2643 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2644 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2645 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2646 return 1;
042be0f8
CY		 2647 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2648 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2649 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2650 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u",
2651 i, j,
2652 le32_to_cpu(ckpt->cur_data_segno[i]));
042be0f8
CY		 2653 return 1;
2654 }
2655 }
2656 }
2657 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2658 for (j = i; j < NR_CURSEG_DATA_TYPE; j++) {
2659 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2660 le32_to_cpu(ckpt->cur_data_segno[j])) {
dcbb4c10
JP		 2661 f2fs_err(sbi, "Data segment (%u) and Data segment (%u) has the same segno: %u",
2662 i, j,
2663 le32_to_cpu(ckpt->cur_node_segno[i]));
042be0f8
CY		 2664 return 1;
2665 }
2666 }
15d3042a
JQ		 2667 }
2668
c77ec61c
CY		 2669 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2670 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2671
2672 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2673 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
dcbb4c10
JP		 2674 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u",
2675 sit_bitmap_size, nat_bitmap_size);
c77ec61c
CY		 2676 return 1;
2677 }
e494c2f9
CY		 2678
2679 cp_pack_start_sum = __start_sum_addr(sbi);
2680 cp_payload = __cp_payload(sbi);
2681 if (cp_pack_start_sum < cp_payload + 1 ||
2682 cp_pack_start_sum > blocks_per_seg - 1 -
2683 NR_CURSEG_TYPE) {
dcbb4c10
JP		 2684 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
2685 cp_pack_start_sum);
e494c2f9
CY		 2686 return 1;
2687 }
c77ec61c 2688
5dae2d39
CY		 2689 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) &&
2690 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) {
2d008835
CY		 2691 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, "
2692 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, "
2693 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"",
dcbb4c10 2694 le32_to_cpu(ckpt->checksum_offset));
5dae2d39
CY		 2695 return 1;
2696 }
2697
1e968fdf 2698 if (unlikely(f2fs_cp_error(sbi))) {
dcbb4c10 2699 f2fs_err(sbi, "A bug case: need to run fsck");
577e3495
JK		 2700 return 1;
2701 }
aff063e2
JK		 2702 return 0;
2703}
2704
2705static void init_sb_info(struct f2fs_sb_info *sbi)
2706{
2707 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 2708 int i;
aff063e2
JK		 2709
2710 sbi->log_sectors_per_block =
2711 le32_to_cpu(raw_super->log_sectors_per_block);
2712 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2713 sbi->blocksize = 1 << sbi->log_blocksize;
2714 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2715 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2716 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2717 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2718 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2719 sbi->total_node_count =
2720 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2721 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2722 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2723 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2724 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2725 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 2726 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2727 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 2728 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 2729 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 2730
ab9fa662 2731 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2732 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2733 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2734 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2735 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2736 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 2737 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2738 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 2739 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2740
35782b23
JK		 2741 for (i = 0; i < NR_COUNT_TYPE; i++)
2742 atomic_set(&sbi->nr_pages[i], 0);
2743
c29fd0c0
CY		 2744 for (i = 0; i < META; i++)
2745 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2746
2658e50d
JK		 2747 INIT_LIST_HEAD(&sbi->s_list);
2748 mutex_init(&sbi->umount_mutex);
107a805d 2749 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2750 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2751
2752 sbi->dirty_device = 0;
2753 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2754
846ae671 2755 init_rwsem(&sbi->sb_lock);
aff063e2
JK		 2756}
2757
523be8a6
JK		 2758static int init_percpu_info(struct f2fs_sb_info *sbi)
2759{
35782b23 2760 int err;
41382ec4 2761
513c5f37
JK		 2762 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2763 if (err)
2764 return err;
2765
4a70e255 2766 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2767 GFP_KERNEL);
4a70e255
CY		 2768 if (err)
2769 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2770
2771 return err;
523be8a6
JK		 2772}
2773
178053e2 2774#ifdef CONFIG_BLK_DEV_ZONED
3c62be17 2775static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2776{
3c62be17 2777 struct block_device *bdev = FDEV(devi).bdev;
178053e2
DLM		 2778 sector_t nr_sectors = bdev->bd_part->nr_sects;
2779 sector_t sector = 0;
2780 struct blk_zone *zones;
2781 unsigned int i, nr_zones;
2782 unsigned int n = 0;
2783 int err = -EIO;
2784
7beb01f7 2785 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 2786 return 0;
2787
3c62be17 2788 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 2789 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 2790 return -EINVAL;
f99e8648 2791 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 2792 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2793 __ilog2_u32(sbi->blocks_per_blkz))
2794 return -EINVAL;
178053e2 2795 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 2796 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2797 sbi->log_blocks_per_blkz;
f99e8648 2798 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 2799 FDEV(devi).nr_blkz++;
178053e2 2800
95175daf
DLM		 2801 FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
2802 BITS_TO_LONGS(FDEV(devi).nr_blkz)
2803 * sizeof(unsigned long),
2804 GFP_KERNEL);
2805 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 2806 return -ENOMEM;
2807
2808#define F2FS_REPORT_NR_ZONES 4096
2809
026f0507
KC		 2810 zones = f2fs_kzalloc(sbi,
2811 array_size(F2FS_REPORT_NR_ZONES,
2812 sizeof(struct blk_zone)),
2813 GFP_KERNEL);
178053e2
DLM		 2814 if (!zones)
2815 return -ENOMEM;
2816
2817 /* Get block zones type */
2818 while (zones && sector < nr_sectors) {
2819
2820 nr_zones = F2FS_REPORT_NR_ZONES;
bd976e52 2821 err = blkdev_report_zones(bdev, sector, zones, &nr_zones);
178053e2
DLM		 2822 if (err)
2823 break;
2824 if (!nr_zones) {
2825 err = -EIO;
2826 break;
2827 }
2828
2829 for (i = 0; i < nr_zones; i++) {
95175daf
DLM		 2830 if (zones[i].type != BLK_ZONE_TYPE_CONVENTIONAL)
2831 set_bit(n, FDEV(devi).blkz_seq);
178053e2
DLM		 2832 sector += zones[i].len;
2833 n++;
2834 }
2835 }
2836
5222595d 2837 kvfree(zones);
178053e2
DLM		 2838
2839 return err;
2840}
2841#endif
2842
9076a75f
GZ		 2843/*
2844 * Read f2fs raw super block.
2b39e907
SL		 2845 * Because we have two copies of super block, so read both of them
2846 * to get the first valid one. If any one of them is broken, we pass
2847 * them recovery flag back to the caller.
9076a75f 2848 */
df728b0f 2849static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 2850 struct f2fs_super_block **raw_super,
e8240f65 2851 int *valid_super_block, int *recovery)
14d7e9de 2852{
df728b0f 2853 struct super_block *sb = sbi->sb;
2b39e907 2854 int block;
e8240f65 2855 struct buffer_head *bh;
fd694733 2856 struct f2fs_super_block *super;
da554e48 2857 int err = 0;
14d7e9de 2858
b39f0de2
YH		 2859 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2860 if (!super)
2861 return -ENOMEM;
2b39e907
SL		 2862
2863 for (block = 0; block < 2; block++) {
2864 bh = sb_bread(sb, block);
2865 if (!bh) {
dcbb4c10
JP		 2866 f2fs_err(sbi, "Unable to read %dth superblock",
2867 block + 1);
2b39e907
SL		 2868 err = -EIO;
2869 continue;
2870 }
14d7e9de 2871
2b39e907 2872 /* sanity checking of raw super */
38fb6d0e
IZ		 2873 err = sanity_check_raw_super(sbi, bh);
2874 if (err) {
dcbb4c10
JP		 2875 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
2876 block + 1);
2b39e907
SL		 2877 brelse(bh);
2878 continue;
2879 }
14d7e9de 2880
2b39e907 2881 if (!*raw_super) {
fd694733
JK		 2882 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2883 sizeof(*super));
2b39e907
SL		 2884 *valid_super_block = block;
2885 *raw_super = super;
2886 }
2887 brelse(bh);
da554e48 2888 }
2889
2b39e907
SL		 2890 /* Fail to read any one of the superblocks*/
2891 if (err < 0)
2892 *recovery = 1;
da554e48 2893
da554e48 2894 /* No valid superblock */
2b39e907 2895 if (!*raw_super)
5222595d 2896 kvfree(super);
2b39e907
SL		 2897 else
2898 err = 0;
da554e48 2899
2b39e907 2900 return err;
14d7e9de 2901}
2902
fd694733 2903int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 2904{
5d909cdb 2905 struct buffer_head *bh;
d440c52d 2906 __u32 crc = 0;
26d815ad
JK		 2907 int err;
2908
df728b0f
JK		 2909 if ((recover && f2fs_readonly(sbi->sb)) ||
2910 bdev_read_only(sbi->sb->s_bdev)) {
2911 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 2912 return -EROFS;
df728b0f 2913 }
f2353d7b 2914
d440c52d 2915 /* we should update superblock crc here */
7beb01f7 2916 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 2917 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
2918 offsetof(struct f2fs_super_block, crc));
2919 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
2920 }
2921
fd694733 2922 /* write back-up superblock first */
0964fc1a 2923 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 2924 if (!bh)
2925 return -EIO;
fd694733 2926 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 2927 brelse(bh);
c5bda1c8
CY		 2928
2929 /* if we are in recovery path, skip writing valid superblock */
2930 if (recover || err)
5d909cdb 2931 return err;
26d815ad
JK		 2932
2933 /* write current valid superblock */
0964fc1a 2934 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 2935 if (!bh)
2936 return -EIO;
2937 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2938 brelse(bh);
2939 return err;
26d815ad
JK		 2940}
2941
3c62be17
JK		 2942static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
2943{
2944 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 2945 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 2946 int i;
2947
7bb3a371
MS		 2948 /* Initialize single device information */
2949 if (!RDEV(0).path[0]) {
2950 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 2951 return 0;
7bb3a371
MS		 2952 max_devices = 1;
2953 }
3c62be17 2954
7bb3a371
MS		 2955 /*
2956 * Initialize multiple devices information, or single
2957 * zoned block device information.
2958 */
026f0507
KC		 2959 sbi->devs = f2fs_kzalloc(sbi,
2960 array_size(max_devices,
2961 sizeof(struct f2fs_dev_info)),
2962 GFP_KERNEL);
7bb3a371
MS		 2963 if (!sbi->devs)
2964 return -ENOMEM;
3c62be17 2965
7bb3a371 2966 for (i = 0; i < max_devices; i++) {
3c62be17 2967
7bb3a371
MS		 2968 if (i > 0 && !RDEV(i).path[0])
2969 break;
2970
2971 if (max_devices == 1) {
2972 /* Single zoned block device mount */
2973 FDEV(0).bdev =
2974 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 2975 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 2976 } else {
2977 /* Multi-device mount */
2978 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
2979 FDEV(i).total_segments =
2980 le32_to_cpu(RDEV(i).total_segments);
2981 if (i == 0) {
2982 FDEV(i).start_blk = 0;
2983 FDEV(i).end_blk = FDEV(i).start_blk +
2984 (FDEV(i).total_segments <<
2985 sbi->log_blocks_per_seg) - 1 +
2986 le32_to_cpu(raw_super->segment0_blkaddr);
2987 } else {
2988 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
2989 FDEV(i).end_blk = FDEV(i).start_blk +
2990 (FDEV(i).total_segments <<
2991 sbi->log_blocks_per_seg) - 1;
2992 }
2993 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 2994 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 2995 }
3c62be17
JK		 2996 if (IS_ERR(FDEV(i).bdev))
2997 return PTR_ERR(FDEV(i).bdev);
2998
2999 /* to release errored devices */
3000 sbi->s_ndevs = i + 1;
3001
3002#ifdef CONFIG_BLK_DEV_ZONED
3003 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3004 !f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3005 f2fs_err(sbi, "Zoned block device feature not enabled\n");
3c62be17
JK		 3006 return -EINVAL;
3007 }
3008 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3009 if (init_blkz_info(sbi, i)) {
dcbb4c10 3010 f2fs_err(sbi, "Failed to initialize F2FS blkzone information");
3c62be17
JK		 3011 return -EINVAL;
3012 }
7bb3a371
MS		 3013 if (max_devices == 1)
3014 break;
dcbb4c10
JP		 3015 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3016 i, FDEV(i).path,
3017 FDEV(i).total_segments,
3018 FDEV(i).start_blk, FDEV(i).end_blk,
3019 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3020 "Host-aware" : "Host-managed");
3c62be17
JK		 3021 continue;
3022 }
3023#endif
dcbb4c10
JP		 3024 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3025 i, FDEV(i).path,
3026 FDEV(i).total_segments,
3027 FDEV(i).start_blk, FDEV(i).end_blk);
3028 }
3029 f2fs_info(sbi,
3030 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3031 return 0;
3032}
3033
84b89e5d
JK		 3034static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3035{
3036 struct f2fs_sm_info *sm_i = SM_I(sbi);
3037
3038 /* adjust parameters according to the volume size */
3039 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3040 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3041 sm_i->dcc_info->discard_granularity = 1;
3042 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3043 }
4cac90d5
CY		 3044
3045 sbi->readdir_ra = 1;
84b89e5d
JK		 3046}
3047
aff063e2
JK		 3048static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3049{
3050 struct f2fs_sb_info *sbi;
da554e48 3051 struct f2fs_super_block *raw_super;
aff063e2 3052 struct inode *root;
99e3e858 3053 int err;
aa2c8c43 3054 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3055 char *options = NULL;
e8240f65 3056 int recovery, i, valid_super_block;
8f1dbbbb 3057 struct curseg_info *seg_i;
aa2c8c43 3058 int retry_cnt = 1;
aff063e2 3059
ed2e621a 3060try_onemore:
da554e48 3061 err = -EINVAL;
3062 raw_super = NULL;
e8240f65 3063 valid_super_block = -1;
da554e48 3064 recovery = 0;
3065
aff063e2
JK		 3066 /* allocate memory for f2fs-specific super block info */
3067 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3068 if (!sbi)
3069 return -ENOMEM;
3070
df728b0f
JK		 3071 sbi->sb = sb;
3072
43b6573b
KM		 3073 /* Load the checksum driver */
3074 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3075 if (IS_ERR(sbi->s_chksum_driver)) {
dcbb4c10 3076 f2fs_err(sbi, "Cannot load crc32 driver.");
43b6573b
KM		 3077 err = PTR_ERR(sbi->s_chksum_driver);
3078 sbi->s_chksum_driver = NULL;
3079 goto free_sbi;
3080 }
3081
ff9234ad 3082 /* set a block size */
6bacf52f 3083 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
dcbb4c10 3084 f2fs_err(sbi, "unable to set blocksize");
aff063e2 3085 goto free_sbi;
a07ef784 3086 }
aff063e2 3087
df728b0f 3088 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3089 &recovery);
9076a75f
GZ		 3090 if (err)
3091 goto free_sbi;
3092
5fb08372 3093 sb->s_fs_info = sbi;
52763a4b
JK		 3094 sbi->raw_super = raw_super;
3095
704956ec 3096 /* precompute checksum seed for metadata */
7beb01f7 3097 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3098 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3099 sizeof(raw_super->uuid));
3100
d1b959c8
DLM		 3101 /*
3102 * The BLKZONED feature indicates that the drive was formatted with
3103 * zone alignment optimization. This is optional for host-aware
3104 * devices, but mandatory for host-managed zoned block devices.
3105 */
3106#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3107 if (f2fs_sb_has_blkzoned(sbi)) {
dcbb4c10 3108 f2fs_err(sbi, "Zoned block device support is not enabled");
1727f317 3109 err = -EOPNOTSUPP;
d1b959c8
DLM		 3110 goto free_sb_buf;
3111 }
d1b959c8 3112#endif
498c5e9f 3113 default_options(sbi);
aff063e2 3114 /* parse mount options */
dabc4a5c
JK		 3115 options = kstrdup((const char *)data, GFP_KERNEL);
3116 if (data && !options) {
3117 err = -ENOMEM;
aff063e2 3118 goto free_sb_buf;
dabc4a5c
JK		 3119 }
3120
3121 err = parse_options(sb, options);
3122 if (err)
3123 goto free_options;
aff063e2 3124
e0afc4d6
CY		 3125 sbi->max_file_blocks = max_file_blocks();
3126 sb->s_maxbytes = sbi->max_file_blocks <<
3127 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3128 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3129
0abd675e
CY		 3130#ifdef CONFIG_QUOTA
3131 sb->dq_op = &f2fs_quota_operations;
bc88ac96 3132 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3133 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3134
7beb01f7 3135 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3136 for (i = 0; i < MAXQUOTAS; i++) {
3137 if (f2fs_qf_ino(sbi->sb, i))
3138 sbi->nquota_files++;
3139 }
3140 }
0abd675e
CY		 3141#endif
3142
aff063e2 3143 sb->s_op = &f2fs_sops;
643fa961 3144#ifdef CONFIG_FS_ENCRYPTION
0b81d077 3145 sb->s_cop = &f2fs_cryptops;
ffcc4182 3146#endif
aff063e2
JK		 3147 sb->s_xattr = f2fs_xattr_handlers;
3148 sb->s_export_op = &f2fs_export_ops;
3149 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3150 sb->s_time_gran = 1;
1751e8a6
LT		 3151 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3152 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3153 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3154 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3155
3156 /* init f2fs-specific super block info */
e8240f65 3157 sbi->valid_super_block = valid_super_block;
aff063e2 3158 mutex_init(&sbi->gc_mutex);
853137ce 3159 mutex_init(&sbi->writepages);
aff063e2 3160 mutex_init(&sbi->cp_mutex);
04f0b2ea 3161 mutex_init(&sbi->resize_mutex);
b3582c68 3162 init_rwsem(&sbi->node_write);
59c9081b 3163 init_rwsem(&sbi->node_change);
315df839
JK		 3164
3165 /* disallow all the data/node/meta page writes */
3166 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3167 spin_lock_init(&sbi->stat_lock);
971767ca 3168
b0af6d49
CY		 3169 /* init iostat info */
3170 spin_lock_init(&sbi->iostat_lock);
3171 sbi->iostat_enable = false;
3172
458e6197 3173 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3174 int n = (i == META) ? 1: NR_TEMP_TYPE;
3175 int j;
3176
c8606593
KC		 3177 sbi->write_io[i] =
3178 f2fs_kmalloc(sbi,
3179 array_size(n,
3180 sizeof(struct f2fs_bio_info)),
3181 GFP_KERNEL);
b63def91
CJ		 3182 if (!sbi->write_io[i]) {
3183 err = -ENOMEM;
0b2103e8 3184 goto free_bio_info;
b63def91 3185 }
a912b54d
JK		 3186
3187 for (j = HOT; j < n; j++) {
3188 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3189 sbi->write_io[i][j].sbi = sbi;
3190 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3191 spin_lock_init(&sbi->write_io[i][j].io_lock);
3192 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
a912b54d 3193 }
458e6197 3194 }
971767ca 3195
b873b798 3196 init_rwsem(&sbi->cp_rwsem);
db6ec53b 3197 init_rwsem(&sbi->quota_sem);
fb51b5ef 3198 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3199 init_sb_info(sbi);
3200
523be8a6
JK		 3201 err = init_percpu_info(sbi);
3202 if (err)
d7997e63 3203 goto free_bio_info;
523be8a6 3204
c72db71e 3205 if (F2FS_IO_ALIGNED(sbi)) {
0a595eba 3206 sbi->write_io_dummy =
a3ebfe4f 3207 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3208 if (!sbi->write_io_dummy) {
3209 err = -ENOMEM;
d7997e63 3210 goto free_percpu;
1727f317 3211 }
0a595eba
JK		 3212 }
3213
aff063e2
JK		 3214 /* get an inode for meta space */
3215 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3216 if (IS_ERR(sbi->meta_inode)) {
dcbb4c10 3217 f2fs_err(sbi, "Failed to read F2FS meta data inode");
aff063e2 3218 err = PTR_ERR(sbi->meta_inode);
0a595eba 3219 goto free_io_dummy;
aff063e2
JK		 3220 }
3221
4d57b86d 3222 err = f2fs_get_valid_checkpoint(sbi);
a07ef784 3223 if (err) {
dcbb4c10 3224 f2fs_err(sbi, "Failed to get valid F2FS checkpoint");
aff063e2 3225 goto free_meta_inode;
a07ef784 3226 }
aff063e2 3227
af033b2a
CY		 3228 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3229 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3230 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3231 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3232 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3233 }
af033b2a 3234
04f0b2ea
QS		 3235 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
3236 set_sbi_flag(sbi, SBI_NEED_FSCK);
3237
3c62be17
JK		 3238 /* Initialize device list */
3239 err = f2fs_scan_devices(sbi);
3240 if (err) {
dcbb4c10 3241 f2fs_err(sbi, "Failed to find devices");
3c62be17
JK		 3242 goto free_devices;
3243 }
3244
aff063e2
JK		 3245 sbi->total_valid_node_count =
3246 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3247 percpu_counter_set(&sbi->total_valid_inode_count,
3248 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3249 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3250 sbi->total_valid_block_count =
3251 le64_to_cpu(sbi->ckpt->valid_block_count);
3252 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3253 sbi->reserved_blocks = 0;
80d42145 3254 sbi->current_reserved_blocks = 0;
7e65be49 3255 limit_reserve_root(sbi);
41382ec4 3256
c227f912
CY		 3257 for (i = 0; i < NR_INODE_TYPE; i++) {
3258 INIT_LIST_HEAD(&sbi->inode_list[i]);
3259 spin_lock_init(&sbi->inode_lock[i]);
3260 }
040d2bb3 3261 mutex_init(&sbi->flush_lock);
aff063e2 3262
4d57b86d 3263 f2fs_init_extent_cache_info(sbi);
1dcc336b 3264
4d57b86d 3265 f2fs_init_ino_entry_info(sbi);
aff063e2 3266
50fa53ec
CY		 3267 f2fs_init_fsync_node_info(sbi);
3268
aff063e2 3269 /* setup f2fs internal modules */
4d57b86d 3270 err = f2fs_build_segment_manager(sbi);
a07ef784 3271 if (err) {
dcbb4c10
JP		 3272 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)",
3273 err);
aff063e2 3274 goto free_sm;
a07ef784 3275 }
4d57b86d 3276 err = f2fs_build_node_manager(sbi);
a07ef784 3277 if (err) {
dcbb4c10
JP		 3278 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)",
3279 err);
aff063e2 3280 goto free_nm;
a07ef784 3281 }
aff063e2 3282
8f1dbbbb
SL		 3283 /* For write statistics */
3284 if (sb->s_bdev->bd_part)
3285 sbi->sectors_written_start =
dbae2c55
MC		 3286 (u64)part_stat_read(sb->s_bdev->bd_part,
3287 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3288
3289 /* Read accumulated write IO statistics if exists */
3290 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3291 if (__exist_node_summaries(sbi))
3292 sbi->kbytes_written =
b2dde6fc 3293 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3294
4d57b86d 3295 f2fs_build_gc_manager(sbi);
aff063e2 3296
60aa4d55
ST		 3297 err = f2fs_build_stats(sbi);
3298 if (err)
3299 goto free_nm;
3300
aff063e2
JK		 3301 /* get an inode for node space */
3302 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3303 if (IS_ERR(sbi->node_inode)) {
dcbb4c10 3304 f2fs_err(sbi, "Failed to read node inode");
aff063e2 3305 err = PTR_ERR(sbi->node_inode);
60aa4d55 3306 goto free_stats;
aff063e2
JK		 3307 }
3308
aff063e2
JK		 3309 /* read root inode and dentry */
3310 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3311 if (IS_ERR(root)) {
dcbb4c10 3312 f2fs_err(sbi, "Failed to read root inode");
aff063e2 3313 err = PTR_ERR(root);
60aa4d55 3314 goto free_node_inode;
aff063e2 3315 }
bcbfbd60
CY		 3316 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3317 !root->i_size || !root->i_nlink) {
9d847950 3318 iput(root);
8f99a946 3319 err = -EINVAL;
60aa4d55 3320 goto free_node_inode;
8f99a946 3321 }
aff063e2
JK		 3322
3323 sb->s_root = d_make_root(root); /* allocate root dentry */
3324 if (!sb->s_root) {
3325 err = -ENOMEM;
025cdb16 3326 goto free_node_inode;
aff063e2
JK		 3327 }
3328
dc6b2055 3329 err = f2fs_register_sysfs(sbi);
b59d0bae 3330 if (err)
a398101a 3331 goto free_root_inode;
b59d0bae 3332
ea676733 3333#ifdef CONFIG_QUOTA
76cf05d7 3334 /* Enable quota usage during mount */
7beb01f7 3335 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3336 err = f2fs_enable_quotas(sb);
730746ce 3337 if (err)
dcbb4c10 3338 f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
ea676733
JK		 3339 }
3340#endif
4b2414d0 3341 /* if there are nt orphan nodes free them */
4d57b86d 3342 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3343 if (err)
ea676733 3344 goto free_meta;
4b2414d0 3345
4354994f 3346 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3347 goto reset_checkpoint;
4354994f 3348
6437d1b0
JK		 3349 /* recover fsynced data */
3350 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
081d78c2
JK		 3351 /*
3352 * mount should be failed, when device has readonly mode, and
3353 * previous checkpoint was not done by clean system shutdown.
3354 */
b61af314
CY		 3355 if (f2fs_hw_is_readonly(sbi)) {
3356 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3357 err = -EROFS;
dcbb4c10 3358 f2fs_err(sbi, "Need to recover fsync data, but write access unavailable");
b61af314
CY		 3359 goto free_meta;
3360 }
dcbb4c10 3361 f2fs_info(sbi, "write access unavailable, skipping recovery");
b61af314 3362 goto reset_checkpoint;
081d78c2 3363 }
2adc3505
CY		 3364
3365 if (need_fsck)
3366 set_sbi_flag(sbi, SBI_NEED_FSCK);
3367
aa2c8c43
CY		 3368 if (skip_recovery)
3369 goto reset_checkpoint;
a468f0ef 3370
4d57b86d 3371 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3372 if (err < 0) {
aa2c8c43
CY		 3373 if (err != -ENOMEM)
3374 skip_recovery = true;
2adc3505 3375 need_fsck = true;
dcbb4c10
JP		 3376 f2fs_err(sbi, "Cannot recover all fsync data errno=%d",
3377 err);
4b2414d0 3378 goto free_meta;
ed2e621a 3379 }
6781eabb 3380 } else {
4d57b86d 3381 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3382
3383 if (!f2fs_readonly(sb) && err > 0) {
3384 err = -EINVAL;
dcbb4c10 3385 f2fs_err(sbi, "Need to recover fsync data");
ea676733 3386 goto free_meta;
6781eabb 3387 }
6437d1b0 3388 }
aa2c8c43 3389reset_checkpoint:
4d57b86d 3390 /* f2fs_recover_fsync_data() cleared this already */
315df839 3391 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3392
4354994f
DR		 3393 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3394 err = f2fs_disable_checkpoint(sbi);
3395 if (err)
812a9597 3396 goto sync_free_meta;
4354994f
DR		 3397 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3398 f2fs_enable_checkpoint(sbi);
3399 }
3400
6437d1b0
JK		 3401 /*
3402 * If filesystem is not mounted as read-only then
3403 * do start the gc_thread.
3404 */
6c029932 3405 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
6437d1b0 3406 /* After POR, we can run background GC thread.*/
4d57b86d 3407 err = f2fs_start_gc_thread(sbi);
6437d1b0 3408 if (err)
812a9597 3409 goto sync_free_meta;
6437d1b0 3410 }
5222595d 3411 kvfree(options);
da554e48 3412
3413 /* recover broken superblock */
f2353d7b 3414 if (recovery) {
41214b3c 3415 err = f2fs_commit_super(sbi, true);
dcbb4c10
JP		 3416 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d",
3417 sbi->valid_super_block ? 1 : 2, err);
da554e48 3418 }
3419
bae01eda
CY		 3420 f2fs_join_shrinker(sbi);
3421
84b89e5d
JK		 3422 f2fs_tuning_parameters(sbi);
3423
dcbb4c10
JP		 3424 f2fs_notice(sbi, "Mounted with checkpoint version = %llx",
3425 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3426 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3427 f2fs_update_time(sbi, REQ_TIME);
db610a64 3428 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3429 return 0;
6437d1b0 3430
812a9597
JK		 3431sync_free_meta:
3432 /* safe to flush all the data */
3433 sync_filesystem(sbi->sb);
aa2c8c43 3434 retry_cnt = 0;
812a9597 3435
4b2414d0 3436free_meta:
ea676733 3437#ifdef CONFIG_QUOTA
26b5a079 3438 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3439 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3440 f2fs_quota_off_umount(sbi->sb);
3441#endif
4b2414d0 3442 /*
4d57b86d 3443 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3444 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3445 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3446 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3447 */
3448 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3449 /* evict some inodes being cached by GC */
3450 evict_inodes(sb);
dc6b2055 3451 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3452free_root_inode:
3453 dput(sb->s_root);
3454 sb->s_root = NULL;
3455free_node_inode:
4d57b86d 3456 f2fs_release_ino_entry(sbi, true);
bae01eda 3457 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3458 iput(sbi->node_inode);
7c77bf7d 3459 sbi->node_inode = NULL;
60aa4d55
ST		 3460free_stats:
3461 f2fs_destroy_stats(sbi);
aff063e2 3462free_nm:
4d57b86d 3463 f2fs_destroy_node_manager(sbi);
aff063e2 3464free_sm:
4d57b86d 3465 f2fs_destroy_segment_manager(sbi);
3c62be17
JK		 3466free_devices:
3467 destroy_device_list(sbi);
5222595d 3468 kvfree(sbi->ckpt);
aff063e2
JK		 3469free_meta_inode:
3470 make_bad_inode(sbi->meta_inode);
3471 iput(sbi->meta_inode);
7c77bf7d 3472 sbi->meta_inode = NULL;
0a595eba
JK		 3473free_io_dummy:
3474 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3475free_percpu:
3476 destroy_percpu_info(sbi);
3477free_bio_info:
a912b54d 3478 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3479 kvfree(sbi->write_io[i]);
d7997e63 3480free_options:
4b2414d0
CY		 3481#ifdef CONFIG_QUOTA
3482 for (i = 0; i < MAXQUOTAS; i++)
5222595d 3483 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3484#endif
5222595d 3485 kvfree(options);
aff063e2 3486free_sb_buf:
5222595d 3487 kvfree(raw_super);
aff063e2 3488free_sbi:
43b6573b
KM		 3489 if (sbi->s_chksum_driver)
3490 crypto_free_shash(sbi->s_chksum_driver);
5222595d 3491 kvfree(sbi);
ed2e621a
JK		 3492
3493 /* give only one another chance */
aa2c8c43
CY		 3494 if (retry_cnt > 0 && skip_recovery) {
3495 retry_cnt--;
ed2e621a
JK		 3496 shrink_dcache_sb(sb);
3497 goto try_onemore;
3498 }
aff063e2
JK		 3499 return err;
3500}
3501
3502static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3503 const char *dev_name, void *data)
3504{
3505 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3506}
3507
30a5537f
JK		 3508static void kill_f2fs_super(struct super_block *sb)
3509{
cce13252 3510 if (sb->s_root) {
1cb50f87
JK		 3511 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3512
3513 set_sbi_flag(sbi, SBI_IS_CLOSE);
3514 f2fs_stop_gc_thread(sbi);
3515 f2fs_stop_discard_thread(sbi);
3516
3517 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3518 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3519 struct cp_control cpc = {
3520 .reason = CP_UMOUNT,
3521 };
3522 f2fs_write_checkpoint(sbi, &cpc);
3523 }
1378752b
CY		 3524
3525 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3526 sb->s_flags &= ~SB_RDONLY;
cce13252 3527 }
30a5537f
JK		 3528 kill_block_super(sb);
3529}
3530
aff063e2
JK		 3531static struct file_system_type f2fs_fs_type = {
3532 .owner = THIS_MODULE,
3533 .name = "f2fs",
3534 .mount = f2fs_mount,
30a5537f 3535 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3536 .fs_flags = FS_REQUIRES_DEV,
3537};
7f78e035 3538MODULE_ALIAS_FS("f2fs");
aff063e2 3539
6e6093a8 3540static int __init init_inodecache(void)
aff063e2 3541{
5d097056
VD		 3542 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3543 sizeof(struct f2fs_inode_info), 0,
3544 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3545 if (!f2fs_inode_cachep)
aff063e2
JK		 3546 return -ENOMEM;
3547 return 0;
3548}
3549
3550static void destroy_inodecache(void)
3551{
3552 /*
3553 * Make sure all delayed rcu free inodes are flushed before we
3554 * destroy cache.
3555 */
3556 rcu_barrier();
3557 kmem_cache_destroy(f2fs_inode_cachep);
3558}
3559
3560static int __init init_f2fs_fs(void)
3561{
3562 int err;
3563
4071e67c
AP		 3564 if (PAGE_SIZE != F2FS_BLKSIZE) {
3565 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3566 PAGE_SIZE, F2FS_BLKSIZE);
3567 return -EINVAL;
3568 }
3569
c0508650
JK		 3570 f2fs_build_trace_ios();
3571
aff063e2
JK		 3572 err = init_inodecache();
3573 if (err)
3574 goto fail;
4d57b86d 3575 err = f2fs_create_node_manager_caches();
aff063e2 3576 if (err)
9890ff3f 3577 goto free_inodecache;
4d57b86d 3578 err = f2fs_create_segment_manager_caches();
aff063e2 3579 if (err)
9890ff3f 3580 goto free_node_manager_caches;
4d57b86d 3581 err = f2fs_create_checkpoint_caches();
aff063e2 3582 if (err)
06292073 3583 goto free_segment_manager_caches;
4d57b86d 3584 err = f2fs_create_extent_cache();
1dcc336b
CY		 3585 if (err)
3586 goto free_checkpoint_caches;
dc6b2055 3587 err = f2fs_init_sysfs();
a398101a 3588 if (err)
1dcc336b 3589 goto free_extent_cache;
2658e50d 3590 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3591 if (err)
a398101a 3592 goto free_sysfs;
2658e50d
JK		 3593 err = register_filesystem(&f2fs_fs_type);
3594 if (err)
3595 goto free_shrinker;
21acc07d 3596 f2fs_create_root_stats();
6dbb1796
EB		 3597 err = f2fs_init_post_read_processing();
3598 if (err)
3599 goto free_root_stats;
9890ff3f
ZH		 3600 return 0;
3601
6dbb1796
EB		 3602free_root_stats:
3603 f2fs_destroy_root_stats();
787c7b8c 3604 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3605free_shrinker:
3606 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3607free_sysfs:
dc6b2055 3608 f2fs_exit_sysfs();
1dcc336b 3609free_extent_cache:
4d57b86d 3610 f2fs_destroy_extent_cache();
9890ff3f 3611free_checkpoint_caches:
4d57b86d 3612 f2fs_destroy_checkpoint_caches();
7fd9e544 3613free_segment_manager_caches:
4d57b86d 3614 f2fs_destroy_segment_manager_caches();
9890ff3f 3615free_node_manager_caches:
4d57b86d 3616 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3617free_inodecache:
3618 destroy_inodecache();
aff063e2
JK		 3619fail:
3620 return err;
3621}
3622
3623static void __exit exit_f2fs_fs(void)
3624{
6dbb1796 3625 f2fs_destroy_post_read_processing();
4589d25d 3626 f2fs_destroy_root_stats();
aff063e2 3627 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3628 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3629 f2fs_exit_sysfs();
4d57b86d
CY		 3630 f2fs_destroy_extent_cache();
3631 f2fs_destroy_checkpoint_caches();
3632 f2fs_destroy_segment_manager_caches();
3633 f2fs_destroy_node_manager_caches();
aff063e2 3634 destroy_inodecache();
351f4fba 3635 f2fs_destroy_trace_ios();
aff063e2
JK		 3636}
3637
3638module_init(init_f2fs_fs)
3639module_exit(exit_f2fs_fs)
3640
3641MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3642MODULE_DESCRIPTION("Flash Friendly File System");
3643MODULE_LICENSE("GPL");
b4b9d34c 3644
Linux 6.x block layer and io_uring tree(s)