]> git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blame - fs/f2fs/super.c
projects / mirror_ubuntu-hirsute-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
f2fs: fix to do sanity check on valid node/block count
[mirror_ubuntu-hirsute-kernel.git] / fs / f2fs / super.c
CommitLineData
7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
aff063e2
JK		 3 * fs/f2fs/super.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
aff063e2
JK		 7 */
8#include <linux/module.h>
9#include <linux/init.h>
10#include <linux/fs.h>
11#include <linux/statfs.h>
aff063e2
JK		 12#include <linux/buffer_head.h>
13#include <linux/backing-dev.h>
14#include <linux/kthread.h>
15#include <linux/parser.h>
16#include <linux/mount.h>
17#include <linux/seq_file.h>
5e176d54 18#include <linux/proc_fs.h>
aff063e2
JK		 19#include <linux/random.h>
20#include <linux/exportfs.h>
d3ee456d 21#include <linux/blkdev.h>
0abd675e 22#include <linux/quotaops.h>
aff063e2 23#include <linux/f2fs_fs.h>
b59d0bae 24#include <linux/sysfs.h>
4b2414d0 25#include <linux/quota.h>
aff063e2
JK		 26
27#include "f2fs.h"
28#include "node.h"
5ec4e49f 29#include "segment.h"
aff063e2 30#include "xattr.h"
b59d0bae 31#include "gc.h"
db9f7c1a 32#include "trace.h"
aff063e2 33
a2a4a7e4
NJ		 34#define CREATE_TRACE_POINTS
35#include <trace/events/f2fs.h>
36
aff063e2
JK		 37static struct kmem_cache *f2fs_inode_cachep;
38
73faec4d 39#ifdef CONFIG_F2FS_FAULT_INJECTION
2c63fead 40
19880e6e 41const char *f2fs_fault_name[FAULT_MAX] = {
2c63fead 42 [FAULT_KMALLOC] = "kmalloc",
628b3d14 43 [FAULT_KVMALLOC] = "kvmalloc",
c41f3cc3 44 [FAULT_PAGE_ALLOC] = "page alloc",
01eccef7 45 [FAULT_PAGE_GET] = "page get",
d62fe971 46 [FAULT_ALLOC_BIO] = "alloc bio",
cb78942b
JK		 47 [FAULT_ALLOC_NID] = "alloc nid",
48 [FAULT_ORPHAN] = "orphan",
49 [FAULT_BLOCK] = "no more block",
50 [FAULT_DIR_DEPTH] = "too big dir depth",
53aa6bbf 51 [FAULT_EVICT_INODE] = "evict_inode fail",
14b44d23 52 [FAULT_TRUNCATE] = "truncate fail",
6f5c2ed0 53 [FAULT_READ_IO] = "read IO error",
0f348028 54 [FAULT_CHECKPOINT] = "checkpoint error",
b83dcfe6 55 [FAULT_DISCARD] = "discard error",
6f5c2ed0 56 [FAULT_WRITE_IO] = "write IO error",
2c63fead 57};
08796897 58
d494500a
CY		 59void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
60 unsigned int type)
08796897 61{
63189b78 62 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1ecc0c5c 63
08796897 64 if (rate) {
1ecc0c5c
CY		 65 atomic_set(&ffi->inject_ops, 0);
66 ffi->inject_rate = rate;
08796897 67 }
d494500a
CY		 68
69 if (type)
70 ffi->inject_type = type;
71
72 if (!rate && !type)
73 memset(ffi, 0, sizeof(struct f2fs_fault_info));
08796897 74}
73faec4d
JK		 75#endif
76
2658e50d
JK		 77/* f2fs-wide shrinker description */
78static struct shrinker f2fs_shrinker_info = {
79 .scan_objects = f2fs_shrink_scan,
80 .count_objects = f2fs_shrink_count,
81 .seeks = DEFAULT_SEEKS,
82};
83
aff063e2 84enum {
696c018c 85 Opt_gc_background,
aff063e2 86 Opt_disable_roll_forward,
2d834bf9 87 Opt_norecovery,
aff063e2 88 Opt_discard,
64058be9 89 Opt_nodiscard,
aff063e2 90 Opt_noheap,
7a20b8a6 91 Opt_heap,
4058c511 92 Opt_user_xattr,
aff063e2 93 Opt_nouser_xattr,
4058c511 94 Opt_acl,
aff063e2
JK		 95 Opt_noacl,
96 Opt_active_logs,
97 Opt_disable_ext_identify,
444c580f 98 Opt_inline_xattr,
23cf7212 99 Opt_noinline_xattr,
6afc662e 100 Opt_inline_xattr_size,
8274de77 101 Opt_inline_data,
5efd3c6f 102 Opt_inline_dentry,
97c1794a 103 Opt_noinline_dentry,
6b4afdd7 104 Opt_flush_merge,
69e9e427 105 Opt_noflush_merge,
0f7b2abd 106 Opt_nobarrier,
d5053a34 107 Opt_fastboot,
89672159 108 Opt_extent_cache,
7daaea25 109 Opt_noextent_cache,
75342797 110 Opt_noinline_data,
343f40f0 111 Opt_data_flush,
7e65be49 112 Opt_reserve_root,
7c2e5963
JK		 113 Opt_resgid,
114 Opt_resuid,
36abef4e 115 Opt_mode,
ec91538d 116 Opt_io_size_bits,
73faec4d 117 Opt_fault_injection,
d494500a 118 Opt_fault_type,
6d94c74a
JK		 119 Opt_lazytime,
120 Opt_nolazytime,
4b2414d0
CY		 121 Opt_quota,
122 Opt_noquota,
0abd675e
CY		 123 Opt_usrquota,
124 Opt_grpquota,
5c57132e 125 Opt_prjquota,
4b2414d0
CY		 126 Opt_usrjquota,
127 Opt_grpjquota,
128 Opt_prjjquota,
129 Opt_offusrjquota,
130 Opt_offgrpjquota,
131 Opt_offprjjquota,
132 Opt_jqfmt_vfsold,
133 Opt_jqfmt_vfsv0,
134 Opt_jqfmt_vfsv1,
0cdd3195 135 Opt_whint,
07939627 136 Opt_alloc,
93cf93f1 137 Opt_fsync,
ff62af20 138 Opt_test_dummy_encryption,
4354994f 139 Opt_checkpoint,
aff063e2
JK		 140 Opt_err,
141};
142
143static match_table_t f2fs_tokens = {
696c018c 144 {Opt_gc_background, "background_gc=%s"},
aff063e2 145 {Opt_disable_roll_forward, "disable_roll_forward"},
2d834bf9 146 {Opt_norecovery, "norecovery"},
aff063e2 147 {Opt_discard, "discard"},
64058be9 148 {Opt_nodiscard, "nodiscard"},
aff063e2 149 {Opt_noheap, "no_heap"},
7a20b8a6 150 {Opt_heap, "heap"},
4058c511 151 {Opt_user_xattr, "user_xattr"},
aff063e2 152 {Opt_nouser_xattr, "nouser_xattr"},
4058c511 153 {Opt_acl, "acl"},
aff063e2
JK		 154 {Opt_noacl, "noacl"},
155 {Opt_active_logs, "active_logs=%u"},
156 {Opt_disable_ext_identify, "disable_ext_identify"},
444c580f 157 {Opt_inline_xattr, "inline_xattr"},
23cf7212 158 {Opt_noinline_xattr, "noinline_xattr"},
6afc662e 159 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
8274de77 160 {Opt_inline_data, "inline_data"},
5efd3c6f 161 {Opt_inline_dentry, "inline_dentry"},
97c1794a 162 {Opt_noinline_dentry, "noinline_dentry"},
6b4afdd7 163 {Opt_flush_merge, "flush_merge"},
69e9e427 164 {Opt_noflush_merge, "noflush_merge"},
0f7b2abd 165 {Opt_nobarrier, "nobarrier"},
d5053a34 166 {Opt_fastboot, "fastboot"},
89672159 167 {Opt_extent_cache, "extent_cache"},
7daaea25 168 {Opt_noextent_cache, "noextent_cache"},
75342797 169 {Opt_noinline_data, "noinline_data"},
343f40f0 170 {Opt_data_flush, "data_flush"},
7e65be49 171 {Opt_reserve_root, "reserve_root=%u"},
7c2e5963
JK		 172 {Opt_resgid, "resgid=%u"},
173 {Opt_resuid, "resuid=%u"},
36abef4e 174 {Opt_mode, "mode=%s"},
ec91538d 175 {Opt_io_size_bits, "io_bits=%u"},
73faec4d 176 {Opt_fault_injection, "fault_injection=%u"},
d494500a 177 {Opt_fault_type, "fault_type=%u"},
6d94c74a
JK		 178 {Opt_lazytime, "lazytime"},
179 {Opt_nolazytime, "nolazytime"},
4b2414d0
CY		 180 {Opt_quota, "quota"},
181 {Opt_noquota, "noquota"},
0abd675e
CY		 182 {Opt_usrquota, "usrquota"},
183 {Opt_grpquota, "grpquota"},
5c57132e 184 {Opt_prjquota, "prjquota"},
4b2414d0
CY		 185 {Opt_usrjquota, "usrjquota=%s"},
186 {Opt_grpjquota, "grpjquota=%s"},
187 {Opt_prjjquota, "prjjquota=%s"},
188 {Opt_offusrjquota, "usrjquota="},
189 {Opt_offgrpjquota, "grpjquota="},
190 {Opt_offprjjquota, "prjjquota="},
191 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
192 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
193 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
0cdd3195 194 {Opt_whint, "whint_mode=%s"},
07939627 195 {Opt_alloc, "alloc_mode=%s"},
93cf93f1 196 {Opt_fsync, "fsync_mode=%s"},
ff62af20 197 {Opt_test_dummy_encryption, "test_dummy_encryption"},
4354994f 198 {Opt_checkpoint, "checkpoint=%s"},
aff063e2
JK		 199 {Opt_err, NULL},
200};
201
a07ef784
NJ		 202void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...)
203{
204 struct va_format vaf;
205 va_list args;
206
207 va_start(args, fmt);
208 vaf.fmt = fmt;
209 vaf.va = &args;
22d7ea13 210 printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf);
a07ef784
NJ		 211 va_end(args);
212}
213
7e65be49
JK		 214static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
215{
216 block_t limit = (sbi->user_block_count << 1) / 1000;
217
218 /* limit is 0.2% */
63189b78
CY		 219 if (test_opt(sbi, RESERVE_ROOT) &&
220 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
221 F2FS_OPTION(sbi).root_reserved_blocks = limit;
7e65be49
JK		 222 f2fs_msg(sbi->sb, KERN_INFO,
223 "Reduce reserved blocks for root = %u",
63189b78 224 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 225 }
7c2e5963 226 if (!test_opt(sbi, RESERVE_ROOT) &&
63189b78 227 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
7c2e5963 228 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
63189b78 229 !gid_eq(F2FS_OPTION(sbi).s_resgid,
7c2e5963
JK		 230 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
231 f2fs_msg(sbi->sb, KERN_INFO,
232 "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
63189b78
CY		 233 from_kuid_munged(&init_user_ns,
234 F2FS_OPTION(sbi).s_resuid),
235 from_kgid_munged(&init_user_ns,
236 F2FS_OPTION(sbi).s_resgid));
7e65be49
JK		 237}
238
aff063e2
JK		 239static void init_once(void *foo)
240{
241 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
242
aff063e2
JK		 243 inode_init_once(&fi->vfs_inode);
244}
245
4b2414d0
CY		 246#ifdef CONFIG_QUOTA
247static const char * const quotatypes[] = INITQFNAMES;
248#define QTYPE2NAME(t) (quotatypes[t])
249static int f2fs_set_qf_name(struct super_block *sb, int qtype,
250 substring_t *args)
251{
252 struct f2fs_sb_info *sbi = F2FS_SB(sb);
253 char *qname;
254 int ret = -EINVAL;
255
63189b78 256 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
4b2414d0
CY		 257 f2fs_msg(sb, KERN_ERR,
258 "Cannot change journaled "
259 "quota options when quota turned on");
260 return -EINVAL;
261 }
7beb01f7 262 if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 263 f2fs_msg(sb, KERN_INFO,
264 "QUOTA feature is enabled, so ignore qf_name");
265 return 0;
266 }
267
4b2414d0
CY		 268 qname = match_strdup(args);
269 if (!qname) {
270 f2fs_msg(sb, KERN_ERR,
271 "Not enough memory for storing quotafile name");
f365c6cc 272 return -ENOMEM;
4b2414d0 273 }
63189b78
CY		 274 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
275 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
4b2414d0
CY		 276 ret = 0;
277 else
278 f2fs_msg(sb, KERN_ERR,
279 "%s quota file already specified",
280 QTYPE2NAME(qtype));
281 goto errout;
282 }
283 if (strchr(qname, '/')) {
284 f2fs_msg(sb, KERN_ERR,
285 "quotafile must be on filesystem root");
286 goto errout;
287 }
63189b78 288 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
4b2414d0
CY		 289 set_opt(sbi, QUOTA);
290 return 0;
291errout:
5222595d 292 kvfree(qname);
4b2414d0
CY		 293 return ret;
294}
295
296static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
297{
298 struct f2fs_sb_info *sbi = F2FS_SB(sb);
299
63189b78 300 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
4b2414d0
CY		 301 f2fs_msg(sb, KERN_ERR, "Cannot change journaled quota options"
302 " when quota turned on");
303 return -EINVAL;
304 }
5222595d 305 kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
63189b78 306 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
4b2414d0
CY		 307 return 0;
308}
309
310static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
311{
312 /*
313 * We do the test below only for project quotas. 'usrquota' and
314 * 'grpquota' mount options are allowed even without quota feature
315 * to support legacy quotas in quota files.
316 */
7beb01f7 317 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) {
4b2414d0
CY		 318 f2fs_msg(sbi->sb, KERN_ERR, "Project quota feature not enabled. "
319 "Cannot enable project quota enforcement.");
320 return -1;
321 }
63189b78
CY		 322 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
323 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
324 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
325 if (test_opt(sbi, USRQUOTA) &&
326 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
4b2414d0
CY		 327 clear_opt(sbi, USRQUOTA);
328
63189b78
CY		 329 if (test_opt(sbi, GRPQUOTA) &&
330 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
4b2414d0
CY		 331 clear_opt(sbi, GRPQUOTA);
332
63189b78
CY		 333 if (test_opt(sbi, PRJQUOTA) &&
334 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4b2414d0
CY		 335 clear_opt(sbi, PRJQUOTA);
336
337 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
338 test_opt(sbi, PRJQUOTA)) {
339 f2fs_msg(sbi->sb, KERN_ERR, "old and new quota "
340 "format mixing");
341 return -1;
342 }
343
63189b78 344 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 345 f2fs_msg(sbi->sb, KERN_ERR, "journaled quota format "
346 "not specified");
347 return -1;
348 }
349 }
ea676733 350
7beb01f7 351 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) {
ea676733
JK		 352 f2fs_msg(sbi->sb, KERN_INFO,
353 "QUOTA feature is enabled, so ignore jquota_fmt");
63189b78 354 F2FS_OPTION(sbi).s_jquota_fmt = 0;
ea676733 355 }
4b2414d0
CY		 356 return 0;
357}
358#endif
359
696c018c
NJ		 360static int parse_options(struct super_block *sb, char *options)
361{
362 struct f2fs_sb_info *sbi = F2FS_SB(sb);
363 substring_t args[MAX_OPT_ARGS];
364 char *p, *name;
365 int arg = 0;
7c2e5963
JK		 366 kuid_t uid;
367 kgid_t gid;
4b2414d0
CY		 368#ifdef CONFIG_QUOTA
369 int ret;
370#endif
696c018c
NJ		 371
372 if (!options)
373 return 0;
374
375 while ((p = strsep(&options, ",")) != NULL) {
376 int token;
377 if (!*p)
378 continue;
379 /*
380 * Initialize args struct so we know whether arg was
381 * found; some options take optional arguments.
382 */
383 args[0].to = args[0].from = NULL;
384 token = match_token(p, f2fs_tokens, args);
385
386 switch (token) {
387 case Opt_gc_background:
388 name = match_strdup(&args[0]);
389
390 if (!name)
391 return -ENOMEM;
6aefd93b 392 if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
696c018c 393 set_opt(sbi, BG_GC);
6aefd93b
JK		 394 clear_opt(sbi, FORCE_FG_GC);
395 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
696c018c 396 clear_opt(sbi, BG_GC);
6aefd93b
JK		 397 clear_opt(sbi, FORCE_FG_GC);
398 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
399 set_opt(sbi, BG_GC);
400 set_opt(sbi, FORCE_FG_GC);
401 } else {
5222595d 402 kvfree(name);
696c018c
NJ		 403 return -EINVAL;
404 }
5222595d 405 kvfree(name);
696c018c
NJ		 406 break;
407 case Opt_disable_roll_forward:
408 set_opt(sbi, DISABLE_ROLL_FORWARD);
409 break;
2d834bf9
JK		 410 case Opt_norecovery:
411 /* this option mounts f2fs with ro */
412 set_opt(sbi, DISABLE_ROLL_FORWARD);
413 if (!f2fs_readonly(sb))
414 return -EINVAL;
415 break;
696c018c 416 case Opt_discard:
7d20c8ab 417 set_opt(sbi, DISCARD);
696c018c 418 break;
64058be9 419 case Opt_nodiscard:
7beb01f7 420 if (f2fs_sb_has_blkzoned(sbi)) {
96ba2dec
DLM		 421 f2fs_msg(sb, KERN_WARNING,
422 "discard is required for zoned block devices");
423 return -EINVAL;
424 }
64058be9 425 clear_opt(sbi, DISCARD);
487df616 426 break;
696c018c
NJ		 427 case Opt_noheap:
428 set_opt(sbi, NOHEAP);
429 break;
7a20b8a6
JK		 430 case Opt_heap:
431 clear_opt(sbi, NOHEAP);
432 break;
696c018c 433#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 434 case Opt_user_xattr:
435 set_opt(sbi, XATTR_USER);
436 break;
696c018c
NJ		 437 case Opt_nouser_xattr:
438 clear_opt(sbi, XATTR_USER);
439 break;
444c580f
JK		 440 case Opt_inline_xattr:
441 set_opt(sbi, INLINE_XATTR);
442 break;
23cf7212
CY		 443 case Opt_noinline_xattr:
444 clear_opt(sbi, INLINE_XATTR);
445 break;
6afc662e
CY		 446 case Opt_inline_xattr_size:
447 if (args->from && match_int(args, &arg))
448 return -EINVAL;
449 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 450 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 451 break;
696c018c 452#else
4058c511
KA		 453 case Opt_user_xattr:
454 f2fs_msg(sb, KERN_INFO,
455 "user_xattr options not supported");
456 break;
696c018c
NJ		 457 case Opt_nouser_xattr:
458 f2fs_msg(sb, KERN_INFO,
459 "nouser_xattr options not supported");
460 break;
444c580f
JK		 461 case Opt_inline_xattr:
462 f2fs_msg(sb, KERN_INFO,
463 "inline_xattr options not supported");
464 break;
23cf7212
CY		 465 case Opt_noinline_xattr:
466 f2fs_msg(sb, KERN_INFO,
467 "noinline_xattr options not supported");
468 break;
696c018c
NJ		 469#endif
470#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 471 case Opt_acl:
472 set_opt(sbi, POSIX_ACL);
473 break;
696c018c
NJ		 474 case Opt_noacl:
475 clear_opt(sbi, POSIX_ACL);
476 break;
477#else
4058c511
KA		 478 case Opt_acl:
479 f2fs_msg(sb, KERN_INFO, "acl options not supported");
480 break;
696c018c
NJ		 481 case Opt_noacl:
482 f2fs_msg(sb, KERN_INFO, "noacl options not supported");
483 break;
484#endif
485 case Opt_active_logs:
486 if (args->from && match_int(args, &arg))
487 return -EINVAL;
488 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
489 return -EINVAL;
63189b78 490 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 491 break;
492 case Opt_disable_ext_identify:
493 set_opt(sbi, DISABLE_EXT_IDENTIFY);
494 break;
8274de77
HL		 495 case Opt_inline_data:
496 set_opt(sbi, INLINE_DATA);
497 break;
5efd3c6f
CY		 498 case Opt_inline_dentry:
499 set_opt(sbi, INLINE_DENTRY);
500 break;
97c1794a
CY		 501 case Opt_noinline_dentry:
502 clear_opt(sbi, INLINE_DENTRY);
503 break;
6b4afdd7
JK		 504 case Opt_flush_merge:
505 set_opt(sbi, FLUSH_MERGE);
506 break;
69e9e427
JK		 507 case Opt_noflush_merge:
508 clear_opt(sbi, FLUSH_MERGE);
509 break;
0f7b2abd
JK		 510 case Opt_nobarrier:
511 set_opt(sbi, NOBARRIER);
512 break;
d5053a34
JK		 513 case Opt_fastboot:
514 set_opt(sbi, FASTBOOT);
515 break;
89672159
CY		 516 case Opt_extent_cache:
517 set_opt(sbi, EXTENT_CACHE);
518 break;
7daaea25
JK		 519 case Opt_noextent_cache:
520 clear_opt(sbi, EXTENT_CACHE);
521 break;
75342797
WL		 522 case Opt_noinline_data:
523 clear_opt(sbi, INLINE_DATA);
524 break;
343f40f0
CY		 525 case Opt_data_flush:
526 set_opt(sbi, DATA_FLUSH);
527 break;
7e65be49
JK		 528 case Opt_reserve_root:
529 if (args->from && match_int(args, &arg))
530 return -EINVAL;
531 if (test_opt(sbi, RESERVE_ROOT)) {
532 f2fs_msg(sb, KERN_INFO,
533 "Preserve previous reserve_root=%u",
63189b78 534 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 535 } else {
63189b78 536 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 537 set_opt(sbi, RESERVE_ROOT);
538 }
539 break;
7c2e5963
JK		 540 case Opt_resuid:
541 if (args->from && match_int(args, &arg))
542 return -EINVAL;
543 uid = make_kuid(current_user_ns(), arg);
544 if (!uid_valid(uid)) {
545 f2fs_msg(sb, KERN_ERR,
546 "Invalid uid value %d", arg);
547 return -EINVAL;
548 }
63189b78 549 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 550 break;
551 case Opt_resgid:
552 if (args->from && match_int(args, &arg))
553 return -EINVAL;
554 gid = make_kgid(current_user_ns(), arg);
555 if (!gid_valid(gid)) {
556 f2fs_msg(sb, KERN_ERR,
557 "Invalid gid value %d", arg);
558 return -EINVAL;
559 }
63189b78 560 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 561 break;
36abef4e
JK		 562 case Opt_mode:
563 name = match_strdup(&args[0]);
564
565 if (!name)
566 return -ENOMEM;
567 if (strlen(name) == 8 &&
568 !strncmp(name, "adaptive", 8)) {
7beb01f7 569 if (f2fs_sb_has_blkzoned(sbi)) {
3adc57e9
DLM		 570 f2fs_msg(sb, KERN_WARNING,
571 "adaptive mode is not allowed with "
572 "zoned block device feature");
5222595d 573 kvfree(name);
3adc57e9
DLM		 574 return -EINVAL;
575 }
52763a4b 576 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
36abef4e
JK		 577 } else if (strlen(name) == 3 &&
578 !strncmp(name, "lfs", 3)) {
52763a4b 579 set_opt_mode(sbi, F2FS_MOUNT_LFS);
36abef4e 580 } else {
5222595d 581 kvfree(name);
36abef4e
JK		 582 return -EINVAL;
583 }
5222595d 584 kvfree(name);
36abef4e 585 break;
ec91538d
JK		 586 case Opt_io_size_bits:
587 if (args->from && match_int(args, &arg))
588 return -EINVAL;
6d52e135 589 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) {
ec91538d
JK		 590 f2fs_msg(sb, KERN_WARNING,
591 "Not support %d, larger than %d",
592 1 << arg, BIO_MAX_PAGES);
593 return -EINVAL;
594 }
63189b78 595 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 596 break;
4cb037ec 597#ifdef CONFIG_F2FS_FAULT_INJECTION
73faec4d
JK		 598 case Opt_fault_injection:
599 if (args->from && match_int(args, &arg))
600 return -EINVAL;
d494500a
CY		 601 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
602 set_opt(sbi, FAULT_INJECTION);
d494500a 603 break;
4cb037ec 604
d494500a
CY		 605 case Opt_fault_type:
606 if (args->from && match_int(args, &arg))
607 return -EINVAL;
d494500a 608 f2fs_build_fault_attr(sbi, 0, arg);
0cc0dec2 609 set_opt(sbi, FAULT_INJECTION);
4cb037ec 610 break;
73faec4d 611#else
4cb037ec 612 case Opt_fault_injection:
73faec4d 613 f2fs_msg(sb, KERN_INFO,
4cb037ec 614 "fault_injection options not supported");
73faec4d 615 break;
4cb037ec
CX		 616
617 case Opt_fault_type:
618 f2fs_msg(sb, KERN_INFO,
619 "fault_type options not supported");
620 break;
621#endif
6d94c74a 622 case Opt_lazytime:
1751e8a6 623 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 624 break;
625 case Opt_nolazytime:
1751e8a6 626 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 627 break;
0abd675e 628#ifdef CONFIG_QUOTA
4b2414d0 629 case Opt_quota:
0abd675e
CY		 630 case Opt_usrquota:
631 set_opt(sbi, USRQUOTA);
632 break;
633 case Opt_grpquota:
634 set_opt(sbi, GRPQUOTA);
635 break;
5c57132e
CY		 636 case Opt_prjquota:
637 set_opt(sbi, PRJQUOTA);
638 break;
4b2414d0
CY		 639 case Opt_usrjquota:
640 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
641 if (ret)
642 return ret;
643 break;
644 case Opt_grpjquota:
645 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
646 if (ret)
647 return ret;
648 break;
649 case Opt_prjjquota:
650 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
651 if (ret)
652 return ret;
653 break;
654 case Opt_offusrjquota:
655 ret = f2fs_clear_qf_name(sb, USRQUOTA);
656 if (ret)
657 return ret;
658 break;
659 case Opt_offgrpjquota:
660 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
661 if (ret)
662 return ret;
663 break;
664 case Opt_offprjjquota:
665 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
666 if (ret)
667 return ret;
668 break;
669 case Opt_jqfmt_vfsold:
63189b78 670 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 671 break;
672 case Opt_jqfmt_vfsv0:
63189b78 673 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 674 break;
675 case Opt_jqfmt_vfsv1:
63189b78 676 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 677 break;
678 case Opt_noquota:
679 clear_opt(sbi, QUOTA);
680 clear_opt(sbi, USRQUOTA);
681 clear_opt(sbi, GRPQUOTA);
682 clear_opt(sbi, PRJQUOTA);
683 break;
0abd675e 684#else
4b2414d0 685 case Opt_quota:
0abd675e
CY		 686 case Opt_usrquota:
687 case Opt_grpquota:
5c57132e 688 case Opt_prjquota:
4b2414d0
CY		 689 case Opt_usrjquota:
690 case Opt_grpjquota:
691 case Opt_prjjquota:
692 case Opt_offusrjquota:
693 case Opt_offgrpjquota:
694 case Opt_offprjjquota:
695 case Opt_jqfmt_vfsold:
696 case Opt_jqfmt_vfsv0:
697 case Opt_jqfmt_vfsv1:
698 case Opt_noquota:
0abd675e
CY		 699 f2fs_msg(sb, KERN_INFO,
700 "quota operations not supported");
701 break;
702#endif
0cdd3195
HL		 703 case Opt_whint:
704 name = match_strdup(&args[0]);
705 if (!name)
706 return -ENOMEM;
707 if (strlen(name) == 10 &&
708 !strncmp(name, "user-based", 10)) {
63189b78 709 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
0cdd3195
HL		 710 } else if (strlen(name) == 3 &&
711 !strncmp(name, "off", 3)) {
63189b78 712 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
f2e703f9
HL		 713 } else if (strlen(name) == 8 &&
714 !strncmp(name, "fs-based", 8)) {
63189b78 715 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
0cdd3195 716 } else {
5222595d 717 kvfree(name);
0cdd3195
HL		 718 return -EINVAL;
719 }
5222595d 720 kvfree(name);
0cdd3195 721 break;
07939627
JK		 722 case Opt_alloc:
723 name = match_strdup(&args[0]);
724 if (!name)
725 return -ENOMEM;
726
727 if (strlen(name) == 7 &&
728 !strncmp(name, "default", 7)) {
63189b78 729 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
07939627
JK		 730 } else if (strlen(name) == 5 &&
731 !strncmp(name, "reuse", 5)) {
63189b78 732 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627 733 } else {
5222595d 734 kvfree(name);
07939627
JK		 735 return -EINVAL;
736 }
5222595d 737 kvfree(name);
07939627 738 break;
93cf93f1
JZ		 739 case Opt_fsync:
740 name = match_strdup(&args[0]);
741 if (!name)
742 return -ENOMEM;
743 if (strlen(name) == 5 &&
744 !strncmp(name, "posix", 5)) {
63189b78 745 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
93cf93f1
JZ		 746 } else if (strlen(name) == 6 &&
747 !strncmp(name, "strict", 6)) {
63189b78 748 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
d6290814
JK		 749 } else if (strlen(name) == 9 &&
750 !strncmp(name, "nobarrier", 9)) {
751 F2FS_OPTION(sbi).fsync_mode =
752 FSYNC_MODE_NOBARRIER;
93cf93f1 753 } else {
5222595d 754 kvfree(name);
93cf93f1
JZ		 755 return -EINVAL;
756 }
5222595d 757 kvfree(name);
93cf93f1 758 break;
ff62af20 759 case Opt_test_dummy_encryption:
643fa961 760#ifdef CONFIG_FS_ENCRYPTION
7beb01f7 761 if (!f2fs_sb_has_encrypt(sbi)) {
ff62af20
SY		 762 f2fs_msg(sb, KERN_ERR, "Encrypt feature is off");
763 return -EINVAL;
764 }
765
766 F2FS_OPTION(sbi).test_dummy_encryption = true;
767 f2fs_msg(sb, KERN_INFO,
768 "Test dummy encryption mode enabled");
769#else
770 f2fs_msg(sb, KERN_INFO,
771 "Test dummy encryption mount option ignored");
772#endif
773 break;
4354994f
DR		 774 case Opt_checkpoint:
775 name = match_strdup(&args[0]);
776 if (!name)
777 return -ENOMEM;
778
779 if (strlen(name) == 6 &&
780 !strncmp(name, "enable", 6)) {
781 clear_opt(sbi, DISABLE_CHECKPOINT);
782 } else if (strlen(name) == 7 &&
783 !strncmp(name, "disable", 7)) {
784 set_opt(sbi, DISABLE_CHECKPOINT);
785 } else {
5222595d 786 kvfree(name);
4354994f
DR		 787 return -EINVAL;
788 }
5222595d 789 kvfree(name);
4354994f 790 break;
696c018c
NJ		 791 default:
792 f2fs_msg(sb, KERN_ERR,
793 "Unrecognized mount option \"%s\" or missing value",
794 p);
795 return -EINVAL;
796 }
797 }
4b2414d0
CY		 798#ifdef CONFIG_QUOTA
799 if (f2fs_check_quota_options(sbi))
800 return -EINVAL;
00960c2c 801#else
7beb01f7 802 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) {
00960c2c
SY		 803 f2fs_msg(sbi->sb, KERN_INFO,
804 "Filesystem with quota feature cannot be mounted RDWR "
805 "without CONFIG_QUOTA");
806 return -EINVAL;
807 }
7beb01f7 808 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) {
4ddc1b28
CY		 809 f2fs_msg(sb, KERN_ERR,
810 "Filesystem with project quota feature cannot be "
811 "mounted RDWR without CONFIG_QUOTA");
812 return -EINVAL;
813 }
4b2414d0 814#endif
ec91538d
JK		 815
816 if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
817 f2fs_msg(sb, KERN_ERR,
818 "Should set mode=lfs with %uKB-sized IO",
819 F2FS_IO_SIZE_KB(sbi));
820 return -EINVAL;
821 }
6afc662e
CY		 822
823 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
70db5b04
JK		 824 int min_size, max_size;
825
7beb01f7
CY		 826 if (!f2fs_sb_has_extra_attr(sbi) ||
827 !f2fs_sb_has_flexible_inline_xattr(sbi)) {
4d817ae0
CY		 828 f2fs_msg(sb, KERN_ERR,
829 "extra_attr or flexible_inline_xattr "
830 "feature is off");
831 return -EINVAL;
832 }
6afc662e
CY		 833 if (!test_opt(sbi, INLINE_XATTR)) {
834 f2fs_msg(sb, KERN_ERR,
835 "inline_xattr_size option should be "
836 "set with inline_xattr option");
837 return -EINVAL;
838 }
70db5b04
JK		 839
840 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
dd6c89b5 841 max_size = MAX_INLINE_XATTR_SIZE;
70db5b04
JK		 842
843 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
844 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
6afc662e 845 f2fs_msg(sb, KERN_ERR,
70db5b04
JK		 846 "inline xattr size is out of range: %d ~ %d",
847 min_size, max_size);
6afc662e
CY		 848 return -EINVAL;
849 }
850 }
0cdd3195 851
4354994f
DR		 852 if (test_opt(sbi, DISABLE_CHECKPOINT) && test_opt(sbi, LFS)) {
853 f2fs_msg(sb, KERN_ERR,
854 "LFS not compatible with checkpoint=disable\n");
855 return -EINVAL;
856 }
857
0cdd3195
HL		 858 /* Not pass down write hints if the number of active logs is lesser
859 * than NR_CURSEG_TYPE.
860 */
63189b78
CY		 861 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
862 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 863 return 0;
864}
865
aff063e2
JK		 866static struct inode *f2fs_alloc_inode(struct super_block *sb)
867{
868 struct f2fs_inode_info *fi;
869
a0acdfe0 870 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 871 if (!fi)
872 return NULL;
873
874 init_once((void *) fi);
875
434720fa 876 /* Initialize f2fs-specific inode info */
204706c7 877 atomic_set(&fi->dirty_pages, 0);
d928bfbf 878 init_rwsem(&fi->i_sem);
2710fd7e 879 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 880 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 881 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 882 INIT_LIST_HEAD(&fi->inmem_pages);
883 mutex_init(&fi->inmem_lock);
b2532c69
CY		 884 init_rwsem(&fi->i_gc_rwsem[READ]);
885 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 886 init_rwsem(&fi->i_mmap_sem);
27161f13 887 init_rwsem(&fi->i_xattr_sem);
aff063e2 888
ab9fa662
JK		 889 /* Will be used by directory only */
890 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 891
aff063e2
JK		 892 return &fi->vfs_inode;
893}
894
531ad7d5
JK		 895static int f2fs_drop_inode(struct inode *inode)
896{
b8d96a30 897 int ret;
531ad7d5
JK		 898 /*
899 * This is to avoid a deadlock condition like below.
900 * writeback_single_inode(inode)
901 * - f2fs_write_data_page
902 * - f2fs_gc -> iput -> evict
903 * - inode_wait_for_writeback(inode)
904 */
0f18b462 905 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 906 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 907 /* to avoid evict_inode call simultaneously */
908 atomic_inc(&inode->i_count);
06e1bc05
JK		 909 spin_unlock(&inode->i_lock);
910
911 /* some remained atomic pages should discarded */
912 if (f2fs_is_atomic_file(inode))
4d57b86d 913 f2fs_drop_inmem_pages(inode);
06e1bc05 914
3e72f721
JK		 915 /* should remain fi->extent_tree for writepage */
916 f2fs_destroy_extent_node(inode);
917
06e1bc05 918 sb_start_intwrite(inode->i_sb);
fc9581c8 919 f2fs_i_size_write(inode, 0);
06e1bc05 920
a0770e13 921 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
922 inode, NULL, 0, DATA);
923 truncate_inode_pages_final(inode->i_mapping);
924
06e1bc05 925 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 926 f2fs_truncate(inode);
06e1bc05
JK		 927
928 sb_end_intwrite(inode->i_sb);
929
06e1bc05 930 spin_lock(&inode->i_lock);
3e72f721 931 atomic_dec(&inode->i_count);
06e1bc05 932 }
b8d96a30 933 trace_f2fs_drop_inode(inode, 0);
531ad7d5 934 return 0;
06e1bc05 935 }
b8d96a30
HP		 936 ret = generic_drop_inode(inode);
937 trace_f2fs_drop_inode(inode, ret);
938 return ret;
531ad7d5
JK		 939}
940
7c45729a 941int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 942{
0f18b462 943 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 944 int ret = 0;
0f18b462 945
0f18b462
JK		 946 spin_lock(&sbi->inode_lock[DIRTY_META]);
947 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 948 ret = 1;
949 } else {
950 set_inode_flag(inode, FI_DIRTY_INODE);
951 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 952 }
7c45729a
JK		 953 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
954 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 955 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 956 inc_page_count(sbi, F2FS_DIRTY_IMETA);
957 }
338bbfa0 958 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 959 return ret;
0f18b462
JK		 960}
961
962void f2fs_inode_synced(struct inode *inode)
963{
964 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
965
966 spin_lock(&sbi->inode_lock[DIRTY_META]);
967 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
968 spin_unlock(&sbi->inode_lock[DIRTY_META]);
969 return;
970 }
7c45729a
JK		 971 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
972 list_del_init(&F2FS_I(inode)->gdirty_list);
973 dec_page_count(sbi, F2FS_DIRTY_IMETA);
974 }
0f18b462 975 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 976 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 977 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 978 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 979}
980
b56ab837
JK		 981/*
982 * f2fs_dirty_inode() is called from __mark_inode_dirty()
983 *
984 * We should call set_dirty_inode to write the dirty inode through write_inode.
985 */
986static void f2fs_dirty_inode(struct inode *inode, int flags)
987{
988 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
989
990 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
991 inode->i_ino == F2FS_META_INO(sbi))
992 return;
993
994 if (flags == I_DIRTY_TIME)
995 return;
996
997 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
998 clear_inode_flag(inode, FI_AUTO_RECOVER);
999
7c45729a 1000 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 1001}
1002
aff063e2
JK		 1003static void f2fs_i_callback(struct rcu_head *head)
1004{
1005 struct inode *inode = container_of(head, struct inode, i_rcu);
1006 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1007}
1008
25ca923b 1009static void f2fs_destroy_inode(struct inode *inode)
aff063e2
JK		 1010{
1011 call_rcu(&inode->i_rcu, f2fs_i_callback);
1012}
1013
523be8a6
JK		 1014static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1015{
41382ec4 1016 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 1017 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 1018}
1019
3c62be17
JK		 1020static void destroy_device_list(struct f2fs_sb_info *sbi)
1021{
1022 int i;
1023
1024 for (i = 0; i < sbi->s_ndevs; i++) {
1025 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1026#ifdef CONFIG_BLK_DEV_ZONED
95175daf 1027 kvfree(FDEV(i).blkz_seq);
3c62be17
JK		 1028#endif
1029 }
5222595d 1030 kvfree(sbi->devs);
3c62be17
JK		 1031}
1032
aff063e2
JK		 1033static void f2fs_put_super(struct super_block *sb)
1034{
1035 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1036 int i;
cf5c759f 1037 bool dropped;
aff063e2 1038
0abd675e 1039 f2fs_quota_off_umount(sb);
aff063e2 1040
2658e50d
JK		 1041 /* prevent remaining shrinker jobs */
1042 mutex_lock(&sbi->umount_mutex);
1043
85dc2f2c
JK		 1044 /*
1045 * We don't need to do checkpoint when superblock is clean.
1046 * But, the previous checkpoint was not done by umount, it needs to do
1047 * clean checkpoint again.
1048 */
4354994f
DR		 1049 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1050 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1051 struct cp_control cpc = {
1052 .reason = CP_UMOUNT,
1053 };
4d57b86d 1054 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1055 }
aff063e2 1056
4e6a8d9b 1057 /* be sure to wait for any on-going discard commands */
03f2c02d 1058 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1059
7d20c8ab
CY		 1060 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1061 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1062 struct cp_control cpc = {
1063 .reason = CP_UMOUNT | CP_TRIMMED,
1064 };
4d57b86d 1065 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1066 }
1067
cf779cab
JK		 1068 /*
1069 * normally superblock is clean, so we need to release this.
1070 * In addition, EIO will skip do checkpoint, we need this as well.
1071 */
4d57b86d 1072 f2fs_release_ino_entry(sbi, true);
6f12ac25 1073
2658e50d
JK		 1074 f2fs_leave_shrinker(sbi);
1075 mutex_unlock(&sbi->umount_mutex);
1076
17c19120 1077 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1078 f2fs_flush_merged_writes(sbi);
17c19120 1079
50fa53ec
CY		 1080 f2fs_wait_on_all_pages_writeback(sbi);
1081
1082 f2fs_bug_on(sbi, sbi->fsync_node_num);
1083
aff063e2 1084 iput(sbi->node_inode);
7c77bf7d
JK		 1085 sbi->node_inode = NULL;
1086
aff063e2 1087 iput(sbi->meta_inode);
7c77bf7d 1088 sbi->meta_inode = NULL;
aff063e2 1089
60aa4d55
ST		 1090 /*
1091 * iput() can update stat information, if f2fs_write_checkpoint()
1092 * above failed with error.
1093 */
1094 f2fs_destroy_stats(sbi);
1095
aff063e2 1096 /* destroy f2fs internal modules */
4d57b86d
CY		 1097 f2fs_destroy_node_manager(sbi);
1098 f2fs_destroy_segment_manager(sbi);
aff063e2 1099
5222595d 1100 kvfree(sbi->ckpt);
a398101a 1101
dc6b2055 1102 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1103
1104 sb->s_fs_info = NULL;
43b6573b
KM		 1105 if (sbi->s_chksum_driver)
1106 crypto_free_shash(sbi->s_chksum_driver);
5222595d 1107 kvfree(sbi->raw_super);
523be8a6 1108
3c62be17 1109 destroy_device_list(sbi);
b6895e8f 1110 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1111#ifdef CONFIG_QUOTA
1112 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1113 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1114#endif
523be8a6 1115 destroy_percpu_info(sbi);
a912b54d 1116 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d
JK		 1117 kvfree(sbi->write_io[i]);
1118 kvfree(sbi);
aff063e2
JK		 1119}
1120
1121int f2fs_sync_fs(struct super_block *sb, int sync)
1122{
1123 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1124 int err = 0;
aff063e2 1125
1f227a3e
JK		 1126 if (unlikely(f2fs_cp_error(sbi)))
1127 return 0;
4354994f
DR		 1128 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1129 return 0;
1f227a3e 1130
a2a4a7e4
NJ		 1131 trace_f2fs_sync_fs(sb, sync);
1132
4b2414d0
CY		 1133 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1134 return -EAGAIN;
1135
b7473754 1136 if (sync) {
d5053a34
JK		 1137 struct cp_control cpc;
1138
119ee914
JK		 1139 cpc.reason = __get_cp_reason(sbi);
1140
b7473754 1141 mutex_lock(&sbi->gc_mutex);
4d57b86d 1142 err = f2fs_write_checkpoint(sbi, &cpc);
b7473754 1143 mutex_unlock(&sbi->gc_mutex);
b7473754 1144 }
05ca3632 1145 f2fs_trace_ios(NULL, 1);
aff063e2 1146
c34f42e2 1147 return err;
aff063e2
JK		 1148}
1149
d6212a5f
CL		 1150static int f2fs_freeze(struct super_block *sb)
1151{
77888c1e 1152 if (f2fs_readonly(sb))
d6212a5f
CL		 1153 return 0;
1154
b4b9d34c
JK		 1155 /* IO error happened before */
1156 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1157 return -EIO;
1158
1159 /* must be clean, since sync_filesystem() was already called */
1160 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1161 return -EINVAL;
1162 return 0;
d6212a5f
CL		 1163}
1164
1165static int f2fs_unfreeze(struct super_block *sb)
1166{
1167 return 0;
1168}
1169
ddc34e32
CY		 1170#ifdef CONFIG_QUOTA
1171static int f2fs_statfs_project(struct super_block *sb,
1172 kprojid_t projid, struct kstatfs *buf)
1173{
1174 struct kqid qid;
1175 struct dquot *dquot;
1176 u64 limit;
1177 u64 curblock;
1178
1179 qid = make_kqid_projid(projid);
1180 dquot = dqget(sb, qid);
1181 if (IS_ERR(dquot))
1182 return PTR_ERR(dquot);
955ac6e5 1183 spin_lock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1184
1185 limit = (dquot->dq_dqb.dqb_bsoftlimit ?
1186 dquot->dq_dqb.dqb_bsoftlimit :
1187 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
1188 if (limit && buf->f_blocks > limit) {
1189 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1190 buf->f_blocks = limit;
1191 buf->f_bfree = buf->f_bavail =
1192 (buf->f_blocks > curblock) ?
1193 (buf->f_blocks - curblock) : 0;
1194 }
1195
1196 limit = dquot->dq_dqb.dqb_isoftlimit ?
1197 dquot->dq_dqb.dqb_isoftlimit :
1198 dquot->dq_dqb.dqb_ihardlimit;
1199 if (limit && buf->f_files > limit) {
1200 buf->f_files = limit;
1201 buf->f_ffree =
1202 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1203 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1204 }
1205
955ac6e5 1206 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1207 dqput(dquot);
1208 return 0;
1209}
1210#endif
1211
aff063e2
JK		 1212static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1213{
1214 struct super_block *sb = dentry->d_sb;
1215 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1216 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1217 block_t total_count, user_block_count, start_count;
0cc091d0 1218 u64 avail_node_count;
aff063e2
JK		 1219
1220 total_count = le64_to_cpu(sbi->raw_super->block_count);
1221 user_block_count = sbi->user_block_count;
1222 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1223 buf->f_type = F2FS_SUPER_MAGIC;
1224 buf->f_bsize = sbi->blocksize;
1225
1226 buf->f_blocks = total_count - start_count;
f66c027e 1227 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1228 sbi->current_reserved_blocks;
4354994f
DR		 1229 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1230 buf->f_bfree = 0;
1231 else
1232 buf->f_bfree -= sbi->unusable_block_count;
1233
63189b78
CY		 1234 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1235 buf->f_bavail = buf->f_bfree -
1236 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1237 else
1238 buf->f_bavail = 0;
aff063e2 1239
292c196a
CY		 1240 avail_node_count = sbi->total_node_count - sbi->nquota_files -
1241 F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1242
1243 if (avail_node_count > user_block_count) {
1244 buf->f_files = user_block_count;
1245 buf->f_ffree = buf->f_bavail;
1246 } else {
1247 buf->f_files = avail_node_count;
1248 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1249 buf->f_bavail);
1250 }
aff063e2 1251
5a20d339 1252 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1253 buf->f_fsid.val[0] = (u32)id;
1254 buf->f_fsid.val[1] = (u32)(id >> 32);
1255
ddc34e32
CY		 1256#ifdef CONFIG_QUOTA
1257 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1258 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1259 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1260 }
1261#endif
aff063e2
JK		 1262 return 0;
1263}
1264
4b2414d0
CY		 1265static inline void f2fs_show_quota_options(struct seq_file *seq,
1266 struct super_block *sb)
1267{
1268#ifdef CONFIG_QUOTA
1269 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1270
63189b78 1271 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1272 char *fmtname = "";
1273
63189b78 1274 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1275 case QFMT_VFS_OLD:
1276 fmtname = "vfsold";
1277 break;
1278 case QFMT_VFS_V0:
1279 fmtname = "vfsv0";
1280 break;
1281 case QFMT_VFS_V1:
1282 fmtname = "vfsv1";
1283 break;
1284 }
1285 seq_printf(seq, ",jqfmt=%s", fmtname);
1286 }
1287
63189b78
CY		 1288 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1289 seq_show_option(seq, "usrjquota",
1290 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1291
63189b78
CY		 1292 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1293 seq_show_option(seq, "grpjquota",
1294 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1295
63189b78
CY		 1296 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1297 seq_show_option(seq, "prjjquota",
1298 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1299#endif
1300}
1301
aff063e2
JK		 1302static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1303{
1304 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1305
6aefd93b
JK		 1306 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1307 if (test_opt(sbi, FORCE_FG_GC))
1308 seq_printf(seq, ",background_gc=%s", "sync");
1309 else
1310 seq_printf(seq, ",background_gc=%s", "on");
1311 } else {
696c018c 1312 seq_printf(seq, ",background_gc=%s", "off");
6aefd93b 1313 }
aff063e2
JK		 1314 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1315 seq_puts(seq, ",disable_roll_forward");
1316 if (test_opt(sbi, DISCARD))
1317 seq_puts(seq, ",discard");
1318 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1319 seq_puts(seq, ",no_heap");
1320 else
1321 seq_puts(seq, ",heap");
aff063e2
JK		 1322#ifdef CONFIG_F2FS_FS_XATTR
1323 if (test_opt(sbi, XATTR_USER))
1324 seq_puts(seq, ",user_xattr");
1325 else
1326 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1327 if (test_opt(sbi, INLINE_XATTR))
1328 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1329 else
1330 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1331 if (test_opt(sbi, INLINE_XATTR_SIZE))
1332 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1333 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1334#endif
1335#ifdef CONFIG_F2FS_FS_POSIX_ACL
1336 if (test_opt(sbi, POSIX_ACL))
1337 seq_puts(seq, ",acl");
1338 else
1339 seq_puts(seq, ",noacl");
1340#endif
1341 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1342 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1343 if (test_opt(sbi, INLINE_DATA))
1344 seq_puts(seq, ",inline_data");
75342797
WL		 1345 else
1346 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1347 if (test_opt(sbi, INLINE_DENTRY))
1348 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1349 else
1350 seq_puts(seq, ",noinline_dentry");
b270ad6f 1351 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1352 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1353 if (test_opt(sbi, NOBARRIER))
1354 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1355 if (test_opt(sbi, FASTBOOT))
1356 seq_puts(seq, ",fastboot");
89672159
CY		 1357 if (test_opt(sbi, EXTENT_CACHE))
1358 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1359 else
1360 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1361 if (test_opt(sbi, DATA_FLUSH))
1362 seq_puts(seq, ",data_flush");
36abef4e
JK		 1363
1364 seq_puts(seq, ",mode=");
1365 if (test_opt(sbi, ADAPTIVE))
1366 seq_puts(seq, "adaptive");
1367 else if (test_opt(sbi, LFS))
1368 seq_puts(seq, "lfs");
63189b78 1369 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1370 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1371 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1372 F2FS_OPTION(sbi).root_reserved_blocks,
1373 from_kuid_munged(&init_user_ns,
1374 F2FS_OPTION(sbi).s_resuid),
1375 from_kgid_munged(&init_user_ns,
1376 F2FS_OPTION(sbi).s_resgid));
ec91538d 1377 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1378 seq_printf(seq, ",io_bits=%u",
1379 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1380#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1381 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1382 seq_printf(seq, ",fault_injection=%u",
63189b78 1383 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1384 seq_printf(seq, ",fault_type=%u",
1385 F2FS_OPTION(sbi).fault_info.inject_type);
1386 }
0cc0dec2 1387#endif
0abd675e 1388#ifdef CONFIG_QUOTA
4b2414d0
CY		 1389 if (test_opt(sbi, QUOTA))
1390 seq_puts(seq, ",quota");
0abd675e
CY		 1391 if (test_opt(sbi, USRQUOTA))
1392 seq_puts(seq, ",usrquota");
1393 if (test_opt(sbi, GRPQUOTA))
1394 seq_puts(seq, ",grpquota");
5c57132e
CY		 1395 if (test_opt(sbi, PRJQUOTA))
1396 seq_puts(seq, ",prjquota");
0cc0dec2 1397#endif
4b2414d0 1398 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1399 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1400 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1401 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1402 seq_printf(seq, ",whint_mode=%s", "fs-based");
643fa961 1403#ifdef CONFIG_FS_ENCRYPTION
ff62af20
SY		 1404 if (F2FS_OPTION(sbi).test_dummy_encryption)
1405 seq_puts(seq, ",test_dummy_encryption");
1406#endif
aff063e2 1407
63189b78 1408 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1409 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1410 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1411 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1412
4354994f
DR		 1413 if (test_opt(sbi, DISABLE_CHECKPOINT))
1414 seq_puts(seq, ",checkpoint=disable");
1415
63189b78 1416 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1417 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1418 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1419 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1420 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1421 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
aff063e2
JK		 1422 return 0;
1423}
1424
498c5e9f
YH		 1425static void default_options(struct f2fs_sb_info *sbi)
1426{
1427 /* init some FS parameters */
63189b78
CY		 1428 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1429 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1430 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1431 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1432 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1433 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1434 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1435 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
498c5e9f
YH		 1436
1437 set_opt(sbi, BG_GC);
39133a50 1438 set_opt(sbi, INLINE_XATTR);
498c5e9f 1439 set_opt(sbi, INLINE_DATA);
97c1794a 1440 set_opt(sbi, INLINE_DENTRY);
3e72f721 1441 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1442 set_opt(sbi, NOHEAP);
4354994f 1443 clear_opt(sbi, DISABLE_CHECKPOINT);
1751e8a6 1444 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1445 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1446 set_opt(sbi, DISCARD);
7beb01f7 1447 if (f2fs_sb_has_blkzoned(sbi))
a39e5365
CY		 1448 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1449 else
52763a4b 1450 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
498c5e9f
YH		 1451
1452#ifdef CONFIG_F2FS_FS_XATTR
1453 set_opt(sbi, XATTR_USER);
1454#endif
1455#ifdef CONFIG_F2FS_FS_POSIX_ACL
1456 set_opt(sbi, POSIX_ACL);
1457#endif
36dbd328 1458
d494500a 1459 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1460}
1461
ea676733
JK		 1462#ifdef CONFIG_QUOTA
1463static int f2fs_enable_quotas(struct super_block *sb);
1464#endif
4354994f
DR		 1465
1466static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1467{
812a9597 1468 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1469 struct cp_control cpc;
812a9597
JK		 1470 int err = 0;
1471 int ret;
4354994f 1472
812a9597
JK		 1473 if (s_flags & SB_RDONLY) {
1474 f2fs_msg(sbi->sb, KERN_ERR,
1475 "checkpoint=disable on readonly fs");
1476 return -EINVAL;
1477 }
4354994f
DR		 1478 sbi->sb->s_flags |= SB_ACTIVE;
1479
4354994f
DR		 1480 f2fs_update_time(sbi, DISABLE_TIME);
1481
1482 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
8f31b466 1483 mutex_lock(&sbi->gc_mutex);
4354994f 1484 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1485 if (err == -ENODATA) {
1486 err = 0;
4354994f 1487 break;
812a9597 1488 }
8f31b466 1489 if (err && err != -EAGAIN)
812a9597 1490 break;
4354994f 1491 }
4354994f 1492
812a9597
JK		 1493 ret = sync_filesystem(sbi->sb);
1494 if (ret || err) {
1495 err = ret ? ret: err;
1496 goto restore_flag;
1497 }
4354994f 1498
812a9597
JK		 1499 if (f2fs_disable_cp_again(sbi)) {
1500 err = -EAGAIN;
1501 goto restore_flag;
1502 }
4354994f
DR		 1503
1504 mutex_lock(&sbi->gc_mutex);
1505 cpc.reason = CP_PAUSE;
1506 set_sbi_flag(sbi, SBI_CP_DISABLED);
1507 f2fs_write_checkpoint(sbi, &cpc);
1508
1509 sbi->unusable_block_count = 0;
1510 mutex_unlock(&sbi->gc_mutex);
812a9597
JK		 1511restore_flag:
1512 sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */
1513 return err;
4354994f
DR		 1514}
1515
1516static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1517{
1518 mutex_lock(&sbi->gc_mutex);
1519 f2fs_dirty_to_prefree(sbi);
1520
1521 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1522 set_sbi_flag(sbi, SBI_IS_DIRTY);
1523 mutex_unlock(&sbi->gc_mutex);
1524
1525 f2fs_sync_fs(sbi->sb, 1);
1526}
1527
696c018c
NJ		 1528static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1529{
1530 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1531 struct f2fs_mount_info org_mount_opt;
0abd675e 1532 unsigned long old_sb_flags;
63189b78 1533 int err;
876dc59e
GZ		 1534 bool need_restart_gc = false;
1535 bool need_stop_gc = false;
9cd81ce3 1536 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f
DR		 1537 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1538 bool checkpoint_changed;
4b2414d0 1539#ifdef CONFIG_QUOTA
4b2414d0
CY		 1540 int i, j;
1541#endif
696c018c
NJ		 1542
1543 /*
1544 * Save the old mount options in case we
1545 * need to restore them.
1546 */
1547 org_mount_opt = sbi->mount_opt;
0abd675e 1548 old_sb_flags = sb->s_flags;
696c018c 1549
4b2414d0 1550#ifdef CONFIG_QUOTA
63189b78 1551 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1552 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1553 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1554 org_mount_opt.s_qf_names[i] =
1555 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1556 GFP_KERNEL);
1557 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1558 for (j = 0; j < i; j++)
5222595d 1559 kvfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1560 return -ENOMEM;
1561 }
1562 } else {
63189b78 1563 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1564 }
1565 }
1566#endif
1567
df728b0f 1568 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1569 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f
JK		 1570 err = f2fs_commit_super(sbi, false);
1571 f2fs_msg(sb, KERN_INFO,
1572 "Try to recover all the superblocks, ret: %d", err);
1573 if (!err)
1574 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1575 }
1576
498c5e9f 1577 default_options(sbi);
26666c8a 1578
696c018c
NJ		 1579 /* parse mount options */
1580 err = parse_options(sb, data);
1581 if (err)
1582 goto restore_opts;
4354994f
DR		 1583 checkpoint_changed =
1584 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1585
1586 /*
1587 * Previous and new state of filesystem is RO,
876dc59e 1588 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1589 */
1751e8a6 1590 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1591 goto skip;
1592
ea676733 1593#ifdef CONFIG_QUOTA
1751e8a6 1594 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1595 err = dquot_suspend(sb, -1);
1596 if (err < 0)
1597 goto restore_opts;
4354994f 1598 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1599 /* dquot_resume needs RW */
1751e8a6 1600 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1601 if (sb_any_quota_suspended(sb)) {
1602 dquot_resume(sb, -1);
7beb01f7 1603 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1604 err = f2fs_enable_quotas(sb);
1605 if (err)
1606 goto restore_opts;
1607 }
0abd675e 1608 }
ea676733 1609#endif
9cd81ce3
CY		 1610 /* disallow enable/disable extent_cache dynamically */
1611 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1612 err = -EINVAL;
1613 f2fs_msg(sbi->sb, KERN_WARNING,
1614 "switch extent_cache option is not allowed");
1615 goto restore_opts;
1616 }
1617
4354994f
DR		 1618 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1619 err = -EINVAL;
1620 f2fs_msg(sbi->sb, KERN_WARNING,
1621 "disabling checkpoint not compatible with read-only");
1622 goto restore_opts;
1623 }
1624
696c018c
NJ		 1625 /*
1626 * We stop the GC thread if FS is mounted as RO
1627 * or if background_gc = off is passed in mount
1628 * option. Also sync the filesystem.
1629 */
1751e8a6 1630 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
696c018c 1631 if (sbi->gc_thread) {
4d57b86d 1632 f2fs_stop_gc_thread(sbi);
876dc59e 1633 need_restart_gc = true;
696c018c 1634 }
aba291b3 1635 } else if (!sbi->gc_thread) {
4d57b86d 1636 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1637 if (err)
1638 goto restore_opts;
876dc59e
GZ		 1639 need_stop_gc = true;
1640 }
1641
63189b78
CY		 1642 if (*flags & SB_RDONLY ||
1643 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1644 writeback_inodes_sb(sb, WB_REASON_SYNC);
1645 sync_inodes_sb(sb);
1646
1647 set_sbi_flag(sbi, SBI_IS_DIRTY);
1648 set_sbi_flag(sbi, SBI_IS_CLOSE);
1649 f2fs_sync_fs(sb, 1);
1650 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1651 }
1652
4354994f
DR		 1653 if (checkpoint_changed) {
1654 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1655 err = f2fs_disable_checkpoint(sbi);
1656 if (err)
1657 goto restore_gc;
1658 } else {
1659 f2fs_enable_checkpoint(sbi);
1660 }
1661 }
1662
876dc59e
GZ		 1663 /*
1664 * We stop issue flush thread if FS is mounted as RO
1665 * or if flush_merge is not passed in mount option.
1666 */
1751e8a6 1667 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1668 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1669 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1670 } else {
4d57b86d 1671 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1672 if (err)
a688b9d9 1673 goto restore_gc;
696c018c
NJ		 1674 }
1675skip:
4b2414d0
CY		 1676#ifdef CONFIG_QUOTA
1677 /* Release old quota file names */
1678 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1679 kvfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1680#endif
696c018c 1681 /* Update the POSIXACL Flag */
1751e8a6
LT		 1682 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1683 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1684
7e65be49 1685 limit_reserve_root(sbi);
095680f2 1686 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1687 return 0;
876dc59e
GZ		 1688restore_gc:
1689 if (need_restart_gc) {
4d57b86d 1690 if (f2fs_start_gc_thread(sbi))
876dc59e 1691 f2fs_msg(sbi->sb, KERN_WARNING,
e1c42045 1692 "background gc thread has stopped");
876dc59e 1693 } else if (need_stop_gc) {
4d57b86d 1694 f2fs_stop_gc_thread(sbi);
876dc59e 1695 }
696c018c 1696restore_opts:
4b2414d0 1697#ifdef CONFIG_QUOTA
63189b78 1698 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1699 for (i = 0; i < MAXQUOTAS; i++) {
5222595d 1700 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 1701 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1702 }
1703#endif
696c018c 1704 sbi->mount_opt = org_mount_opt;
0abd675e 1705 sb->s_flags = old_sb_flags;
696c018c
NJ		 1706 return err;
1707}
1708
0abd675e
CY		 1709#ifdef CONFIG_QUOTA
1710/* Read data from quotafile */
1711static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1712 size_t len, loff_t off)
1713{
1714 struct inode *inode = sb_dqopt(sb)->files[type];
1715 struct address_space *mapping = inode->i_mapping;
1716 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1717 int offset = off & (sb->s_blocksize - 1);
1718 int tocopy;
1719 size_t toread;
1720 loff_t i_size = i_size_read(inode);
1721 struct page *page;
1722 char *kaddr;
1723
1724 if (off > i_size)
1725 return 0;
1726
1727 if (off + len > i_size)
1728 len = i_size - off;
1729 toread = len;
1730 while (toread > 0) {
1731 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1732repeat:
02117b8a 1733 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1734 if (IS_ERR(page)) {
1735 if (PTR_ERR(page) == -ENOMEM) {
1736 congestion_wait(BLK_RW_ASYNC, HZ/50);
1737 goto repeat;
1738 }
af033b2a 1739 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1740 return PTR_ERR(page);
4e46a023 1741 }
0abd675e
CY		 1742
1743 lock_page(page);
1744
1745 if (unlikely(page->mapping != mapping)) {
1746 f2fs_put_page(page, 1);
1747 goto repeat;
1748 }
1749 if (unlikely(!PageUptodate(page))) {
1750 f2fs_put_page(page, 1);
af033b2a 1751 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1752 return -EIO;
1753 }
1754
1755 kaddr = kmap_atomic(page);
1756 memcpy(data, kaddr + offset, tocopy);
1757 kunmap_atomic(kaddr);
1758 f2fs_put_page(page, 1);
1759
1760 offset = 0;
1761 toread -= tocopy;
1762 data += tocopy;
1763 blkidx++;
1764 }
1765 return len;
1766}
1767
1768/* Write to quotafile */
1769static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1770 const char *data, size_t len, loff_t off)
1771{
1772 struct inode *inode = sb_dqopt(sb)->files[type];
1773 struct address_space *mapping = inode->i_mapping;
1774 const struct address_space_operations *a_ops = mapping->a_ops;
1775 int offset = off & (sb->s_blocksize - 1);
1776 size_t towrite = len;
1777 struct page *page;
1778 char *kaddr;
1779 int err = 0;
1780 int tocopy;
1781
1782 while (towrite > 0) {
1783 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1784 towrite);
4e46a023 1785retry:
0abd675e
CY		 1786 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1787 &page, NULL);
4e46a023
JK		 1788 if (unlikely(err)) {
1789 if (err == -ENOMEM) {
1790 congestion_wait(BLK_RW_ASYNC, HZ/50);
1791 goto retry;
1792 }
af033b2a 1793 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1794 break;
4e46a023 1795 }
0abd675e
CY		 1796
1797 kaddr = kmap_atomic(page);
1798 memcpy(kaddr + offset, data, tocopy);
1799 kunmap_atomic(kaddr);
1800 flush_dcache_page(page);
1801
1802 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1803 page, NULL);
1804 offset = 0;
1805 towrite -= tocopy;
1806 off += tocopy;
1807 data += tocopy;
1808 cond_resched();
1809 }
1810
1811 if (len == towrite)
6e5b5d41 1812 return err;
0abd675e
CY		 1813 inode->i_mtime = inode->i_ctime = current_time(inode);
1814 f2fs_mark_inode_dirty_sync(inode, false);
1815 return len - towrite;
1816}
1817
1818static struct dquot **f2fs_get_dquots(struct inode *inode)
1819{
1820 return F2FS_I(inode)->i_dquot;
1821}
1822
1823static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1824{
1825 return &F2FS_I(inode)->i_reserved_quota;
1826}
1827
4b2414d0
CY		 1828static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1829{
af033b2a
CY		 1830 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
1831 f2fs_msg(sbi->sb, KERN_ERR,
1832 "quota sysfile may be corrupted, skip loading it");
1833 return 0;
1834 }
1835
63189b78
CY		 1836 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1837 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1838}
1839
ea676733 1840int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1841{
ea676733
JK		 1842 int enabled = 0;
1843 int i, err;
1844
7beb01f7 1845 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 1846 err = f2fs_enable_quotas(sbi->sb);
1847 if (err) {
1848 f2fs_msg(sbi->sb, KERN_ERR,
1849 "Cannot turn on quota_ino: %d", err);
1850 return 0;
1851 }
1852 return 1;
1853 }
4b2414d0
CY		 1854
1855 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 1856 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 1857 err = f2fs_quota_on_mount(sbi, i);
1858 if (!err) {
1859 enabled = 1;
1860 continue;
1861 }
1862 f2fs_msg(sbi->sb, KERN_ERR,
1863 "Cannot turn on quotas: %d on %d", err, i);
4b2414d0
CY		 1864 }
1865 }
ea676733
JK		 1866 return enabled;
1867}
1868
1869static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1870 unsigned int flags)
1871{
1872 struct inode *qf_inode;
1873 unsigned long qf_inum;
1874 int err;
1875
7beb01f7 1876 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 1877
1878 qf_inum = f2fs_qf_ino(sb, type);
1879 if (!qf_inum)
1880 return -EPERM;
1881
1882 qf_inode = f2fs_iget(sb, qf_inum);
1883 if (IS_ERR(qf_inode)) {
1884 f2fs_msg(sb, KERN_ERR,
1885 "Bad quota inode %u:%lu", type, qf_inum);
1886 return PTR_ERR(qf_inode);
1887 }
1888
1889 /* Don't account quota for quota files to avoid recursion */
1890 qf_inode->i_flags |= S_NOQUOTA;
1891 err = dquot_enable(qf_inode, type, format_id, flags);
1892 iput(qf_inode);
1893 return err;
1894}
1895
1896static int f2fs_enable_quotas(struct super_block *sb)
1897{
1898 int type, err = 0;
1899 unsigned long qf_inum;
1900 bool quota_mopt[MAXQUOTAS] = {
1901 test_opt(F2FS_SB(sb), USRQUOTA),
1902 test_opt(F2FS_SB(sb), GRPQUOTA),
1903 test_opt(F2FS_SB(sb), PRJQUOTA),
1904 };
1905
af033b2a
CY		 1906 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
1907 f2fs_msg(sb, KERN_ERR,
1908 "quota file may be corrupted, skip loading it");
1909 return 0;
1910 }
1911
1912 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1913
ea676733
JK		 1914 for (type = 0; type < MAXQUOTAS; type++) {
1915 qf_inum = f2fs_qf_ino(sb, type);
1916 if (qf_inum) {
1917 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1918 DQUOT_USAGE_ENABLED |
1919 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1920 if (err) {
1921 f2fs_msg(sb, KERN_ERR,
1922 "Failed to enable quota tracking "
1923 "(type=%d, err=%d). Please run "
1924 "fsck to fix.", type, err);
1925 for (type--; type >= 0; type--)
1926 dquot_quota_off(sb, type);
af033b2a
CY		 1927 set_sbi_flag(F2FS_SB(sb),
1928 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 1929 return err;
1930 }
4b2414d0
CY		 1931 }
1932 }
ea676733 1933 return 0;
4b2414d0
CY		 1934}
1935
af033b2a 1936int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 1937{
af033b2a 1938 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 1939 struct quota_info *dqopt = sb_dqopt(sb);
1940 int cnt;
1941 int ret;
1942
1943 ret = dquot_writeback_dquots(sb, type);
1944 if (ret)
af033b2a 1945 goto out;
0abd675e
CY		 1946
1947 /*
1948 * Now when everything is written we can discard the pagecache so
1949 * that userspace sees the changes.
1950 */
1951 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 1952 struct address_space *mapping;
1953
0abd675e
CY		 1954 if (type != -1 && cnt != type)
1955 continue;
1956 if (!sb_has_quota_active(sb, cnt))
1957 continue;
1958
af033b2a
CY		 1959 mapping = dqopt->files[cnt]->i_mapping;
1960
1961 ret = filemap_fdatawrite(mapping);
0abd675e 1962 if (ret)
af033b2a
CY		 1963 goto out;
1964
1965 /* if we are using journalled quota */
1966 if (is_journalled_quota(sbi))
1967 continue;
1968
1969 ret = filemap_fdatawait(mapping);
1970 if (ret)
1971 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1972
1973 inode_lock(dqopt->files[cnt]);
1974 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
1975 inode_unlock(dqopt->files[cnt]);
1976 }
af033b2a
CY		 1977out:
1978 if (ret)
1979 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
1980 return ret;
0abd675e
CY		 1981}
1982
1983static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
1984 const struct path *path)
1985{
1986 struct inode *inode;
1987 int err;
1988
9a20d391 1989 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 1990 if (err)
1991 return err;
1992
1993 err = dquot_quota_on(sb, type, format_id, path);
1994 if (err)
1995 return err;
1996
1997 inode = d_inode(path->dentry);
1998
1999 inode_lock(inode);
59c84408 2000 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 2001 f2fs_set_inode_flags(inode);
0abd675e
CY		 2002 inode_unlock(inode);
2003 f2fs_mark_inode_dirty_sync(inode, false);
2004
2005 return 0;
2006}
2007
2008static int f2fs_quota_off(struct super_block *sb, int type)
2009{
2010 struct inode *inode = sb_dqopt(sb)->files[type];
2011 int err;
2012
2013 if (!inode || !igrab(inode))
2014 return dquot_quota_off(sb, type);
2015
cda9cc59
YH		 2016 err = f2fs_quota_sync(sb, type);
2017 if (err)
2018 goto out_put;
0abd675e
CY		 2019
2020 err = dquot_quota_off(sb, type);
7beb01f7 2021 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2022 goto out_put;
2023
2024 inode_lock(inode);
59c84408 2025 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2026 f2fs_set_inode_flags(inode);
0abd675e
CY		 2027 inode_unlock(inode);
2028 f2fs_mark_inode_dirty_sync(inode, false);
2029out_put:
2030 iput(inode);
2031 return err;
2032}
2033
4b2414d0 2034void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2035{
2036 int type;
cda9cc59
YH		 2037 int err;
2038
2039 for (type = 0; type < MAXQUOTAS; type++) {
2040 err = f2fs_quota_off(sb, type);
2041 if (err) {
2042 int ret = dquot_quota_off(sb, type);
0abd675e 2043
cda9cc59
YH		 2044 f2fs_msg(sb, KERN_ERR,
2045 "Fail to turn off disk quota "
2046 "(type: %d, err: %d, ret:%d), Please "
2047 "run fsck to fix it.", type, err, ret);
af033b2a 2048 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2049 }
2050 }
0e0667b6
JK		 2051 /*
2052 * In case of checkpoint=disable, we must flush quota blocks.
2053 * This can cause NULL exception for node_inode in end_io, since
2054 * put_super already dropped it.
2055 */
2056 sync_filesystem(sb);
0abd675e
CY		 2057}
2058
26b5a079
SY		 2059static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2060{
2061 struct quota_info *dqopt = sb_dqopt(sb);
2062 int type;
2063
2064 for (type = 0; type < MAXQUOTAS; type++) {
2065 if (!dqopt->files[type])
2066 continue;
2067 f2fs_inode_synced(dqopt->files[type]);
2068 }
2069}
2070
af033b2a
CY		 2071static int f2fs_dquot_commit(struct dquot *dquot)
2072{
2073 int ret;
2074
2075 ret = dquot_commit(dquot);
2076 if (ret < 0)
2077 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
2078 return ret;
2079}
2080
2081static int f2fs_dquot_acquire(struct dquot *dquot)
2082{
2083 int ret;
2084
2085 ret = dquot_acquire(dquot);
2086 if (ret < 0)
2087 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
2088
2089 return ret;
2090}
2091
2092static int f2fs_dquot_release(struct dquot *dquot)
2093{
2094 int ret;
2095
2096 ret = dquot_release(dquot);
2097 if (ret < 0)
2098 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
2099 return ret;
2100}
2101
2102static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2103{
2104 struct super_block *sb = dquot->dq_sb;
2105 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2106 int ret;
2107
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
2114 return ret;
2115}
2116
2117static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2118{
2119 int ret;
2120
2121 ret = dquot_commit_info(sb, type);
2122 if (ret < 0)
2123 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2124 return ret;
2125}
26b5a079 2126
94b1e10e 2127static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2128{
2129 *projid = F2FS_I(inode)->i_projid;
2130 return 0;
2131}
2132
0abd675e
CY		 2133static const struct dquot_operations f2fs_quota_operations = {
2134 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2135 .write_dquot = f2fs_dquot_commit,
2136 .acquire_dquot = f2fs_dquot_acquire,
2137 .release_dquot = f2fs_dquot_release,
2138 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2139 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2140 .alloc_dquot = dquot_alloc,
2141 .destroy_dquot = dquot_destroy,
5c57132e 2142 .get_projid = f2fs_get_projid,
0abd675e
CY		 2143 .get_next_id = dquot_get_next_id,
2144};
2145
2146static const struct quotactl_ops f2fs_quotactl_ops = {
2147 .quota_on = f2fs_quota_on,
2148 .quota_off = f2fs_quota_off,
2149 .quota_sync = f2fs_quota_sync,
2150 .get_state = dquot_get_state,
2151 .set_info = dquot_set_dqinfo,
2152 .get_dqblk = dquot_get_dqblk,
2153 .set_dqblk = dquot_set_dqblk,
2154 .get_nextdqblk = dquot_get_next_dqblk,
2155};
2156#else
af033b2a
CY		 2157int f2fs_quota_sync(struct super_block *sb, int type)
2158{
2159 return 0;
2160}
2161
4b2414d0 2162void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2163{
2164}
2165#endif
2166
f62fc9f9 2167static const struct super_operations f2fs_sops = {
aff063e2 2168 .alloc_inode = f2fs_alloc_inode,
531ad7d5 2169 .drop_inode = f2fs_drop_inode,
aff063e2
JK		 2170 .destroy_inode = f2fs_destroy_inode,
2171 .write_inode = f2fs_write_inode,
b3783873 2172 .dirty_inode = f2fs_dirty_inode,
aff063e2 2173 .show_options = f2fs_show_options,
0abd675e
CY		 2174#ifdef CONFIG_QUOTA
2175 .quota_read = f2fs_quota_read,
2176 .quota_write = f2fs_quota_write,
2177 .get_dquots = f2fs_get_dquots,
2178#endif
aff063e2
JK		 2179 .evict_inode = f2fs_evict_inode,
2180 .put_super = f2fs_put_super,
2181 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2182 .freeze_fs = f2fs_freeze,
2183 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2184 .statfs = f2fs_statfs,
696c018c 2185 .remount_fs = f2fs_remount,
aff063e2
JK		 2186};
2187
643fa961 2188#ifdef CONFIG_FS_ENCRYPTION
0b81d077
JK		 2189static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2190{
2191 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2192 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2193 ctx, len, NULL);
2194}
2195
2196static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2197 void *fs_data)
2198{
b7c409de
SY		 2199 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2200
2201 /*
2202 * Encrypting the root directory is not allowed because fsck
2203 * expects lost+found directory to exist and remain unencrypted
2204 * if LOST_FOUND feature is enabled.
2205 *
2206 */
7beb01f7 2207 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2208 inode->i_ino == F2FS_ROOT_INO(sbi))
2209 return -EPERM;
2210
0b81d077
JK		 2211 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2212 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2213 ctx, len, fs_data, XATTR_CREATE);
2214}
2215
ff62af20
SY		 2216static bool f2fs_dummy_context(struct inode *inode)
2217{
2218 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2219}
2220
6f69f0ed 2221static const struct fscrypt_operations f2fs_cryptops = {
a5d431ef 2222 .key_prefix = "f2fs:",
0b81d077
JK		 2223 .get_context = f2fs_get_context,
2224 .set_context = f2fs_set_context,
ff62af20 2225 .dummy_context = f2fs_dummy_context,
0b81d077 2226 .empty_dir = f2fs_empty_dir,
e12ee683 2227 .max_namelen = F2FS_NAME_LEN,
0b81d077 2228};
0b81d077
JK		 2229#endif
2230
aff063e2
JK		 2231static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2232 u64 ino, u32 generation)
2233{
2234 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2235 struct inode *inode;
2236
4d57b86d 2237 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2238 return ERR_PTR(-ESTALE);
aff063e2
JK		 2239
2240 /*
2241 * f2fs_iget isn't quite right if the inode is currently unallocated!
2242 * However f2fs_iget currently does appropriate checks to handle stale
2243 * inodes so everything is OK.
2244 */
2245 inode = f2fs_iget(sb, ino);
2246 if (IS_ERR(inode))
2247 return ERR_CAST(inode);
6bacf52f 2248 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2249 /* we didn't find the right inode.. */
2250 iput(inode);
2251 return ERR_PTR(-ESTALE);
2252 }
2253 return inode;
2254}
2255
2256static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2257 int fh_len, int fh_type)
2258{
2259 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2260 f2fs_nfs_get_inode);
2261}
2262
2263static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2264 int fh_len, int fh_type)
2265{
2266 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2267 f2fs_nfs_get_inode);
2268}
2269
2270static const struct export_operations f2fs_export_ops = {
2271 .fh_to_dentry = f2fs_fh_to_dentry,
2272 .fh_to_parent = f2fs_fh_to_parent,
2273 .get_parent = f2fs_get_parent,
2274};
2275
e0afc4d6 2276static loff_t max_file_blocks(void)
aff063e2 2277{
7a2af766 2278 loff_t result = 0;
aff063e2
JK		 2279 loff_t leaf_count = ADDRS_PER_BLOCK;
2280
7a2af766
CY		 2281 /*
2282 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2283 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2284 * space in inode.i_addr, it will be more safe to reassign
2285 * result as zero.
2286 */
2287
aff063e2
JK		 2288 /* two direct node blocks */
2289 result += (leaf_count * 2);
2290
2291 /* two indirect node blocks */
2292 leaf_count *= NIDS_PER_BLOCK;
2293 result += (leaf_count * 2);
2294
2295 /* one double indirect node block */
2296 leaf_count *= NIDS_PER_BLOCK;
2297 result += leaf_count;
2298
aff063e2
JK		 2299 return result;
2300}
2301
fd694733
JK		 2302static int __f2fs_commit_super(struct buffer_head *bh,
2303 struct f2fs_super_block *super)
2304{
2305 lock_buffer(bh);
2306 if (super)
2307 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2308 set_buffer_dirty(bh);
2309 unlock_buffer(bh);
2310
2311 /* it's rare case, we can do fua all the time */
3adc5fcb 2312 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2313}
2314
df728b0f 2315static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2316 struct buffer_head *bh)
9a59b62f 2317{
fd694733
JK		 2318 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2319 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2320 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2321 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2322 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2323 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2324 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2325 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2326 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2327 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2328 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2329 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2330 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2331 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2332 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2333 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2334 u64 main_end_blkaddr = main_blkaddr +
2335 (segment_count_main << log_blocks_per_seg);
2336 u64 seg_end_blkaddr = segment0_blkaddr +
2337 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2338
2339 if (segment0_blkaddr != cp_blkaddr) {
2340 f2fs_msg(sb, KERN_INFO,
2341 "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2342 segment0_blkaddr, cp_blkaddr);
2343 return true;
2344 }
2345
2346 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2347 sit_blkaddr) {
2348 f2fs_msg(sb, KERN_INFO,
2349 "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2350 cp_blkaddr, sit_blkaddr,
2351 segment_count_ckpt << log_blocks_per_seg);
2352 return true;
2353 }
2354
2355 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2356 nat_blkaddr) {
2357 f2fs_msg(sb, KERN_INFO,
2358 "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2359 sit_blkaddr, nat_blkaddr,
2360 segment_count_sit << log_blocks_per_seg);
2361 return true;
2362 }
2363
2364 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2365 ssa_blkaddr) {
2366 f2fs_msg(sb, KERN_INFO,
2367 "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2368 nat_blkaddr, ssa_blkaddr,
2369 segment_count_nat << log_blocks_per_seg);
2370 return true;
2371 }
2372
2373 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2374 main_blkaddr) {
2375 f2fs_msg(sb, KERN_INFO,
2376 "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2377 ssa_blkaddr, main_blkaddr,
2378 segment_count_ssa << log_blocks_per_seg);
2379 return true;
2380 }
2381
fd694733 2382 if (main_end_blkaddr > seg_end_blkaddr) {
9a59b62f 2383 f2fs_msg(sb, KERN_INFO,
fd694733 2384 "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
9a59b62f 2385 main_blkaddr,
fd694733
JK		 2386 segment0_blkaddr +
2387 (segment_count << log_blocks_per_seg),
9a59b62f
CY		 2388 segment_count_main << log_blocks_per_seg);
2389 return true;
fd694733
JK		 2390 } else if (main_end_blkaddr < seg_end_blkaddr) {
2391 int err = 0;
2392 char *res;
2393
2394 /* fix in-memory information all the time */
2395 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2396 segment0_blkaddr) >> log_blocks_per_seg);
2397
2398 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2399 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2400 res = "internally";
2401 } else {
2402 err = __f2fs_commit_super(bh, NULL);
2403 res = err ? "failed" : "done";
2404 }
2405 f2fs_msg(sb, KERN_INFO,
2406 "Fix alignment : %s, start(%u) end(%u) block(%u)",
2407 res, main_blkaddr,
2408 segment0_blkaddr +
2409 (segment_count << log_blocks_per_seg),
2410 segment_count_main << log_blocks_per_seg);
2411 if (err)
2412 return true;
9a59b62f 2413 }
9a59b62f
CY		 2414 return false;
2415}
2416
df728b0f 2417static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2418 struct buffer_head *bh)
aff063e2 2419{
0cfe75c5
JK		 2420 block_t segment_count, segs_per_sec, secs_per_zone;
2421 block_t total_sections, blocks_per_seg;
fd694733
JK		 2422 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2423 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2424 struct super_block *sb = sbi->sb;
aff063e2 2425 unsigned int blocksize;
d440c52d
JZ		 2426 size_t crc_offset = 0;
2427 __u32 crc = 0;
2428
2429 /* Check checksum_offset and crc in superblock */
7beb01f7 2430 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2431 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2432 if (crc_offset !=
2433 offsetof(struct f2fs_super_block, crc)) {
2434 f2fs_msg(sb, KERN_INFO,
2435 "Invalid SB checksum offset: %zu",
2436 crc_offset);
2437 return 1;
2438 }
2439 crc = le32_to_cpu(raw_super->crc);
2440 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
2441 f2fs_msg(sb, KERN_INFO,
2442 "Invalid SB checksum value: %u", crc);
2443 return 1;
2444 }
2445 }
aff063e2 2446
a07ef784
NJ		 2447 if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) {
2448 f2fs_msg(sb, KERN_INFO,
2449 "Magic Mismatch, valid(0x%x) - read(0x%x)",
2450 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
aff063e2 2451 return 1;
a07ef784 2452 }
aff063e2 2453
5c9b4692 2454 /* Currently, support only 4KB page cache size */
09cbfeaf 2455 if (F2FS_BLKSIZE != PAGE_SIZE) {
5c9b4692 2456 f2fs_msg(sb, KERN_INFO,
bda52397 2457 "Invalid page_cache_size (%lu), supports only 4KB",
09cbfeaf 2458 PAGE_SIZE);
5c9b4692 2459 return 1;
2460 }
2461
aff063e2
JK		 2462 /* Currently, support only 4KB block size */
2463 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2464 if (blocksize != F2FS_BLKSIZE) {
a07ef784 2465 f2fs_msg(sb, KERN_INFO,
bda52397 2466 "Invalid blocksize (%u), supports only 4KB",
a07ef784 2467 blocksize);
aff063e2 2468 return 1;
a07ef784 2469 }
5c9b4692 2470
9a59b62f
CY		 2471 /* check log blocks per segment */
2472 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
2473 f2fs_msg(sb, KERN_INFO,
bda52397 2474 "Invalid log blocks per segment (%u)",
9a59b62f
CY		 2475 le32_to_cpu(raw_super->log_blocks_per_seg));
2476 return 1;
2477 }
2478
55cf9cb6
CY		 2479 /* Currently, support 512/1024/2048/4096 bytes sector size */
2480 if (le32_to_cpu(raw_super->log_sectorsize) >
2481 F2FS_MAX_LOG_SECTOR_SIZE ||
2482 le32_to_cpu(raw_super->log_sectorsize) <
2483 F2FS_MIN_LOG_SECTOR_SIZE) {
2484 f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)",
2485 le32_to_cpu(raw_super->log_sectorsize));
aff063e2 2486 return 1;
a07ef784 2487 }
55cf9cb6
CY		 2488 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2489 le32_to_cpu(raw_super->log_sectorsize) !=
2490 F2FS_MAX_LOG_SECTOR_SIZE) {
2491 f2fs_msg(sb, KERN_INFO,
2492 "Invalid log sectors per block(%u) log sectorsize(%u)",
2493 le32_to_cpu(raw_super->log_sectors_per_block),
2494 le32_to_cpu(raw_super->log_sectorsize));
aff063e2 2495 return 1;
a07ef784 2496 }
9a59b62f 2497
0cfe75c5
JK		 2498 segment_count = le32_to_cpu(raw_super->segment_count);
2499 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2500 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2501 total_sections = le32_to_cpu(raw_super->section_count);
2502
2503 /* blocks_per_seg should be 512, given the above check */
2504 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2505
2506 if (segment_count > F2FS_MAX_SEGMENT ||
2507 segment_count < F2FS_MIN_SEGMENTS) {
2508 f2fs_msg(sb, KERN_INFO,
2509 "Invalid segment count (%u)",
2510 segment_count);
2511 return 1;
2512 }
2513
2514 if (total_sections > segment_count ||
2515 total_sections < F2FS_MIN_SEGMENTS ||
2516 segs_per_sec > segment_count || !segs_per_sec) {
2517 f2fs_msg(sb, KERN_INFO,
2518 "Invalid segment/section count (%u, %u x %u)",
2519 segment_count, total_sections, segs_per_sec);
2520 return 1;
2521 }
2522
2523 if ((segment_count / segs_per_sec) < total_sections) {
2524 f2fs_msg(sb, KERN_INFO,
2525 "Small segment_count (%u < %u * %u)",
2526 segment_count, segs_per_sec, total_sections);
2527 return 1;
2528 }
2529
88960068 2530 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
0cfe75c5 2531 f2fs_msg(sb, KERN_INFO,
88960068
MB		 2532 "Wrong segment_count / block_count (%u > %llu)",
2533 segment_count, le64_to_cpu(raw_super->block_count));
0cfe75c5
JK		 2534 return 1;
2535 }
2536
42bf546c 2537 if (secs_per_zone > total_sections || !secs_per_zone) {
0cfe75c5 2538 f2fs_msg(sb, KERN_INFO,
42bf546c 2539 "Wrong secs_per_zone / total_sections (%u, %u)",
0cfe75c5
JK		 2540 secs_per_zone, total_sections);
2541 return 1;
2542 }
2543 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2544 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2545 (le32_to_cpu(raw_super->extension_count) +
2546 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
2547 f2fs_msg(sb, KERN_INFO,
2548 "Corrupted extension count (%u + %u > %u)",
2549 le32_to_cpu(raw_super->extension_count),
2550 raw_super->hot_ext_count,
2551 F2FS_MAX_EXTENSION);
2552 return 1;
2553 }
2554
2555 if (le32_to_cpu(raw_super->cp_payload) >
2556 (blocks_per_seg - F2FS_CP_PACKS)) {
2557 f2fs_msg(sb, KERN_INFO,
2558 "Insane cp_payload (%u > %u)",
2559 le32_to_cpu(raw_super->cp_payload),
2560 blocks_per_seg - F2FS_CP_PACKS);
2561 return 1;
2562 }
2563
9a59b62f
CY		 2564 /* check reserved ino info */
2565 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2566 le32_to_cpu(raw_super->meta_ino) != 2 ||
2567 le32_to_cpu(raw_super->root_ino) != 3) {
2568 f2fs_msg(sb, KERN_INFO,
2569 "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2570 le32_to_cpu(raw_super->node_ino),
2571 le32_to_cpu(raw_super->meta_ino),
2572 le32_to_cpu(raw_super->root_ino));
2573 return 1;
2574 }
2575
2576 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2577 if (sanity_check_area_boundary(sbi, bh))
9a59b62f
CY		 2578 return 1;
2579
aff063e2
JK		 2580 return 0;
2581}
2582
4d57b86d 2583int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2584{
2585 unsigned int total, fsmeta;
577e3495
JK		 2586 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2587 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2588 unsigned int ovp_segments, reserved_segments;
15d3042a 2589 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2590 unsigned int sit_segs, nat_segs;
2591 unsigned int sit_bitmap_size, nat_bitmap_size;
2592 unsigned int log_blocks_per_seg;
9dc956b2 2593 unsigned int segment_count_main;
e494c2f9 2594 unsigned int cp_pack_start_sum, cp_payload;
7b63f72f
CY		 2595 block_t user_block_count, valid_user_blocks;
2596 block_t avail_node_count, valid_node_count;
042be0f8 2597 int i, j;
aff063e2
JK		 2598
2599 total = le32_to_cpu(raw_super->segment_count);
2600 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2601 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2602 fsmeta += sit_segs;
2603 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2604 fsmeta += nat_segs;
aff063e2
JK		 2605 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2606 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2607
6bacf52f 2608 if (unlikely(fsmeta >= total))
aff063e2 2609 return 1;
577e3495 2610
2040fce8
JK		 2611 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2612 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2613
2614 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2615 ovp_segments == 0 || reserved_segments == 0)) {
2616 f2fs_msg(sbi->sb, KERN_ERR,
2617 "Wrong layout: check mkfs.f2fs version");
2618 return 1;
2619 }
2620
9dc956b2
CY		 2621 user_block_count = le64_to_cpu(ckpt->user_block_count);
2622 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2623 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2624 if (!user_block_count || user_block_count >=
2625 segment_count_main << log_blocks_per_seg) {
2626 f2fs_msg(sbi->sb, KERN_ERR,
2627 "Wrong user_block_count: %u", user_block_count);
2628 return 1;
2629 }
2630
7b63f72f
CY		 2631 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count);
2632 if (valid_user_blocks > user_block_count) {
2633 f2fs_msg(sbi->sb, KERN_ERR,
2634 "Wrong valid_user_blocks: %u, user_block_count: %u",
2635 valid_user_blocks, user_block_count);
2636 return 1;
2637 }
2638
2639 valid_node_count = le32_to_cpu(ckpt->valid_node_count);
2640 avail_node_count = sbi->total_node_count - sbi->nquota_files -
2641 F2FS_RESERVED_NODE_NUM;
2642 if (valid_node_count > avail_node_count) {
2643 f2fs_msg(sbi->sb, KERN_ERR,
2644 "Wrong valid_node_count: %u, avail_node_count: %u",
2645 valid_node_count, avail_node_count);
2646 return 1;
2647 }
2648
15d3042a
JQ		 2649 main_segs = le32_to_cpu(raw_super->segment_count_main);
2650 blocks_per_seg = sbi->blocks_per_seg;
2651
2652 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2653 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2654 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2655 return 1;
042be0f8
CY		 2656 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2657 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2658 le32_to_cpu(ckpt->cur_node_segno[j])) {
2659 f2fs_msg(sbi->sb, KERN_ERR,
2660 "Node segment (%u, %u) has the same "
2661 "segno: %u", i, j,
2662 le32_to_cpu(ckpt->cur_node_segno[i]));
2663 return 1;
2664 }
2665 }
15d3042a
JQ		 2666 }
2667 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2668 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2669 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2670 return 1;
042be0f8
CY		 2671 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2672 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2673 le32_to_cpu(ckpt->cur_data_segno[j])) {
2674 f2fs_msg(sbi->sb, KERN_ERR,
2675 "Data segment (%u, %u) has the same "
2676 "segno: %u", i, j,
2677 le32_to_cpu(ckpt->cur_data_segno[i]));
2678 return 1;
2679 }
2680 }
2681 }
2682 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2683 for (j = i; j < NR_CURSEG_DATA_TYPE; j++) {
2684 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2685 le32_to_cpu(ckpt->cur_data_segno[j])) {
2686 f2fs_msg(sbi->sb, KERN_ERR,
2687 "Data segment (%u) and Data segment (%u)"
2688 " has the same segno: %u", i, j,
2689 le32_to_cpu(ckpt->cur_node_segno[i]));
2690 return 1;
2691 }
2692 }
15d3042a
JQ		 2693 }
2694
c77ec61c
CY		 2695 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2696 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2697
2698 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2699 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
2700 f2fs_msg(sbi->sb, KERN_ERR,
2701 "Wrong bitmap size: sit: %u, nat:%u",
2702 sit_bitmap_size, nat_bitmap_size);
2703 return 1;
2704 }
e494c2f9
CY		 2705
2706 cp_pack_start_sum = __start_sum_addr(sbi);
2707 cp_payload = __cp_payload(sbi);
2708 if (cp_pack_start_sum < cp_payload + 1 ||
2709 cp_pack_start_sum > blocks_per_seg - 1 -
2710 NR_CURSEG_TYPE) {
2711 f2fs_msg(sbi->sb, KERN_ERR,
2712 "Wrong cp_pack_start_sum: %u",
2713 cp_pack_start_sum);
2714 return 1;
2715 }
c77ec61c 2716
1e968fdf 2717 if (unlikely(f2fs_cp_error(sbi))) {
577e3495
JK		 2718 f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck");
2719 return 1;
2720 }
aff063e2
JK		 2721 return 0;
2722}
2723
2724static void init_sb_info(struct f2fs_sb_info *sbi)
2725{
2726 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 2727 int i;
aff063e2
JK		 2728
2729 sbi->log_sectors_per_block =
2730 le32_to_cpu(raw_super->log_sectors_per_block);
2731 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2732 sbi->blocksize = 1 << sbi->log_blocksize;
2733 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2734 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2735 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2736 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2737 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2738 sbi->total_node_count =
2739 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2740 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2741 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2742 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2743 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2744 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 2745 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2746 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 2747 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 2748 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 2749
ab9fa662 2750 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2751 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2752 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2753 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2754 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2755 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 2756 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2757 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 2758 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2759
35782b23
JK		 2760 for (i = 0; i < NR_COUNT_TYPE; i++)
2761 atomic_set(&sbi->nr_pages[i], 0);
2762
c29fd0c0
CY		 2763 for (i = 0; i < META; i++)
2764 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2765
2658e50d
JK		 2766 INIT_LIST_HEAD(&sbi->s_list);
2767 mutex_init(&sbi->umount_mutex);
107a805d 2768 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2769 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2770
2771 sbi->dirty_device = 0;
2772 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2773
846ae671 2774 init_rwsem(&sbi->sb_lock);
aff063e2
JK		 2775}
2776
523be8a6
JK		 2777static int init_percpu_info(struct f2fs_sb_info *sbi)
2778{
35782b23 2779 int err;
41382ec4 2780
513c5f37
JK		 2781 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2782 if (err)
2783 return err;
2784
4a70e255 2785 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2786 GFP_KERNEL);
4a70e255
CY		 2787 if (err)
2788 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2789
2790 return err;
523be8a6
JK		 2791}
2792
178053e2 2793#ifdef CONFIG_BLK_DEV_ZONED
3c62be17 2794static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2795{
3c62be17 2796 struct block_device *bdev = FDEV(devi).bdev;
178053e2
DLM		 2797 sector_t nr_sectors = bdev->bd_part->nr_sects;
2798 sector_t sector = 0;
2799 struct blk_zone *zones;
2800 unsigned int i, nr_zones;
2801 unsigned int n = 0;
2802 int err = -EIO;
2803
7beb01f7 2804 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 2805 return 0;
2806
3c62be17 2807 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 2808 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 2809 return -EINVAL;
f99e8648 2810 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 2811 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2812 __ilog2_u32(sbi->blocks_per_blkz))
2813 return -EINVAL;
178053e2 2814 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 2815 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2816 sbi->log_blocks_per_blkz;
f99e8648 2817 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 2818 FDEV(devi).nr_blkz++;
178053e2 2819
95175daf
DLM		 2820 FDEV(devi).blkz_seq = f2fs_kzalloc(sbi,
2821 BITS_TO_LONGS(FDEV(devi).nr_blkz)
2822 * sizeof(unsigned long),
2823 GFP_KERNEL);
2824 if (!FDEV(devi).blkz_seq)
178053e2
DLM		 2825 return -ENOMEM;
2826
2827#define F2FS_REPORT_NR_ZONES 4096
2828
026f0507
KC		 2829 zones = f2fs_kzalloc(sbi,
2830 array_size(F2FS_REPORT_NR_ZONES,
2831 sizeof(struct blk_zone)),
2832 GFP_KERNEL);
178053e2
DLM		 2833 if (!zones)
2834 return -ENOMEM;
2835
2836 /* Get block zones type */
2837 while (zones && sector < nr_sectors) {
2838
2839 nr_zones = F2FS_REPORT_NR_ZONES;
2840 err = blkdev_report_zones(bdev, sector,
2841 zones, &nr_zones,
2842 GFP_KERNEL);
2843 if (err)
2844 break;
2845 if (!nr_zones) {
2846 err = -EIO;
2847 break;
2848 }
2849
2850 for (i = 0; i < nr_zones; i++) {
95175daf
DLM		 2851 if (zones[i].type != BLK_ZONE_TYPE_CONVENTIONAL)
2852 set_bit(n, FDEV(devi).blkz_seq);
178053e2
DLM		 2853 sector += zones[i].len;
2854 n++;
2855 }
2856 }
2857
5222595d 2858 kvfree(zones);
178053e2
DLM		 2859
2860 return err;
2861}
2862#endif
2863
9076a75f
GZ		 2864/*
2865 * Read f2fs raw super block.
2b39e907
SL		 2866 * Because we have two copies of super block, so read both of them
2867 * to get the first valid one. If any one of them is broken, we pass
2868 * them recovery flag back to the caller.
9076a75f 2869 */
df728b0f 2870static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 2871 struct f2fs_super_block **raw_super,
e8240f65 2872 int *valid_super_block, int *recovery)
14d7e9de 2873{
df728b0f 2874 struct super_block *sb = sbi->sb;
2b39e907 2875 int block;
e8240f65 2876 struct buffer_head *bh;
fd694733 2877 struct f2fs_super_block *super;
da554e48 2878 int err = 0;
14d7e9de 2879
b39f0de2
YH		 2880 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2881 if (!super)
2882 return -ENOMEM;
2b39e907
SL		 2883
2884 for (block = 0; block < 2; block++) {
2885 bh = sb_bread(sb, block);
2886 if (!bh) {
2887 f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock",
9076a75f 2888 block + 1);
2b39e907
SL		 2889 err = -EIO;
2890 continue;
2891 }
14d7e9de 2892
2b39e907 2893 /* sanity checking of raw super */
df728b0f 2894 if (sanity_check_raw_super(sbi, bh)) {
2b39e907
SL		 2895 f2fs_msg(sb, KERN_ERR,
2896 "Can't find valid F2FS filesystem in %dth superblock",
2897 block + 1);
2898 err = -EINVAL;
2899 brelse(bh);
2900 continue;
2901 }
14d7e9de 2902
2b39e907 2903 if (!*raw_super) {
fd694733
JK		 2904 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2905 sizeof(*super));
2b39e907
SL		 2906 *valid_super_block = block;
2907 *raw_super = super;
2908 }
2909 brelse(bh);
da554e48 2910 }
2911
2b39e907
SL		 2912 /* Fail to read any one of the superblocks*/
2913 if (err < 0)
2914 *recovery = 1;
da554e48 2915
da554e48 2916 /* No valid superblock */
2b39e907 2917 if (!*raw_super)
5222595d 2918 kvfree(super);
2b39e907
SL		 2919 else
2920 err = 0;
da554e48 2921
2b39e907 2922 return err;
14d7e9de 2923}
2924
fd694733 2925int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 2926{
5d909cdb 2927 struct buffer_head *bh;
d440c52d 2928 __u32 crc = 0;
26d815ad
JK		 2929 int err;
2930
df728b0f
JK		 2931 if ((recover && f2fs_readonly(sbi->sb)) ||
2932 bdev_read_only(sbi->sb->s_bdev)) {
2933 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 2934 return -EROFS;
df728b0f 2935 }
f2353d7b 2936
d440c52d 2937 /* we should update superblock crc here */
7beb01f7 2938 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 2939 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
2940 offsetof(struct f2fs_super_block, crc));
2941 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
2942 }
2943
fd694733 2944 /* write back-up superblock first */
0964fc1a 2945 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 2946 if (!bh)
2947 return -EIO;
fd694733 2948 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 2949 brelse(bh);
c5bda1c8
CY		 2950
2951 /* if we are in recovery path, skip writing valid superblock */
2952 if (recover || err)
5d909cdb 2953 return err;
26d815ad
JK		 2954
2955 /* write current valid superblock */
0964fc1a 2956 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 2957 if (!bh)
2958 return -EIO;
2959 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2960 brelse(bh);
2961 return err;
26d815ad
JK		 2962}
2963
3c62be17
JK		 2964static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
2965{
2966 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 2967 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 2968 int i;
2969
7bb3a371
MS		 2970 /* Initialize single device information */
2971 if (!RDEV(0).path[0]) {
2972 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 2973 return 0;
7bb3a371
MS		 2974 max_devices = 1;
2975 }
3c62be17 2976
7bb3a371
MS		 2977 /*
2978 * Initialize multiple devices information, or single
2979 * zoned block device information.
2980 */
026f0507
KC		 2981 sbi->devs = f2fs_kzalloc(sbi,
2982 array_size(max_devices,
2983 sizeof(struct f2fs_dev_info)),
2984 GFP_KERNEL);
7bb3a371
MS		 2985 if (!sbi->devs)
2986 return -ENOMEM;
3c62be17 2987
7bb3a371 2988 for (i = 0; i < max_devices; i++) {
3c62be17 2989
7bb3a371
MS		 2990 if (i > 0 && !RDEV(i).path[0])
2991 break;
2992
2993 if (max_devices == 1) {
2994 /* Single zoned block device mount */
2995 FDEV(0).bdev =
2996 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 2997 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 2998 } else {
2999 /* Multi-device mount */
3000 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
3001 FDEV(i).total_segments =
3002 le32_to_cpu(RDEV(i).total_segments);
3003 if (i == 0) {
3004 FDEV(i).start_blk = 0;
3005 FDEV(i).end_blk = FDEV(i).start_blk +
3006 (FDEV(i).total_segments <<
3007 sbi->log_blocks_per_seg) - 1 +
3008 le32_to_cpu(raw_super->segment0_blkaddr);
3009 } else {
3010 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
3011 FDEV(i).end_blk = FDEV(i).start_blk +
3012 (FDEV(i).total_segments <<
3013 sbi->log_blocks_per_seg) - 1;
3014 }
3015 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 3016 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 3017 }
3c62be17
JK		 3018 if (IS_ERR(FDEV(i).bdev))
3019 return PTR_ERR(FDEV(i).bdev);
3020
3021 /* to release errored devices */
3022 sbi->s_ndevs = i + 1;
3023
3024#ifdef CONFIG_BLK_DEV_ZONED
3025 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3026 !f2fs_sb_has_blkzoned(sbi)) {
3c62be17
JK		 3027 f2fs_msg(sbi->sb, KERN_ERR,
3028 "Zoned block device feature not enabled\n");
3029 return -EINVAL;
3030 }
3031 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3032 if (init_blkz_info(sbi, i)) {
3033 f2fs_msg(sbi->sb, KERN_ERR,
3034 "Failed to initialize F2FS blkzone information");
3035 return -EINVAL;
3036 }
7bb3a371
MS		 3037 if (max_devices == 1)
3038 break;
3c62be17
JK		 3039 f2fs_msg(sbi->sb, KERN_INFO,
3040 "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3041 i, FDEV(i).path,
3042 FDEV(i).total_segments,
3043 FDEV(i).start_blk, FDEV(i).end_blk,
3044 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3045 "Host-aware" : "Host-managed");
3046 continue;
3047 }
3048#endif
3049 f2fs_msg(sbi->sb, KERN_INFO,
3050 "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3051 i, FDEV(i).path,
3052 FDEV(i).total_segments,
3053 FDEV(i).start_blk, FDEV(i).end_blk);
3054 }
0a595eba
JK		 3055 f2fs_msg(sbi->sb, KERN_INFO,
3056 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3057 return 0;
3058}
3059
84b89e5d
JK		 3060static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3061{
3062 struct f2fs_sm_info *sm_i = SM_I(sbi);
3063
3064 /* adjust parameters according to the volume size */
3065 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3066 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3067 sm_i->dcc_info->discard_granularity = 1;
3068 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3069 }
4cac90d5
CY		 3070
3071 sbi->readdir_ra = 1;
84b89e5d
JK		 3072}
3073
aff063e2
JK		 3074static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3075{
3076 struct f2fs_sb_info *sbi;
da554e48 3077 struct f2fs_super_block *raw_super;
aff063e2 3078 struct inode *root;
99e3e858 3079 int err;
aa2c8c43 3080 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3081 char *options = NULL;
e8240f65 3082 int recovery, i, valid_super_block;
8f1dbbbb 3083 struct curseg_info *seg_i;
aa2c8c43 3084 int retry_cnt = 1;
aff063e2 3085
ed2e621a 3086try_onemore:
da554e48 3087 err = -EINVAL;
3088 raw_super = NULL;
e8240f65 3089 valid_super_block = -1;
da554e48 3090 recovery = 0;
3091
aff063e2
JK		 3092 /* allocate memory for f2fs-specific super block info */
3093 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3094 if (!sbi)
3095 return -ENOMEM;
3096
df728b0f
JK		 3097 sbi->sb = sb;
3098
43b6573b
KM		 3099 /* Load the checksum driver */
3100 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3101 if (IS_ERR(sbi->s_chksum_driver)) {
3102 f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver.");
3103 err = PTR_ERR(sbi->s_chksum_driver);
3104 sbi->s_chksum_driver = NULL;
3105 goto free_sbi;
3106 }
3107
ff9234ad 3108 /* set a block size */
6bacf52f 3109 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
a07ef784 3110 f2fs_msg(sb, KERN_ERR, "unable to set blocksize");
aff063e2 3111 goto free_sbi;
a07ef784 3112 }
aff063e2 3113
df728b0f 3114 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3115 &recovery);
9076a75f
GZ		 3116 if (err)
3117 goto free_sbi;
3118
5fb08372 3119 sb->s_fs_info = sbi;
52763a4b
JK		 3120 sbi->raw_super = raw_super;
3121
704956ec 3122 /* precompute checksum seed for metadata */
7beb01f7 3123 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3124 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3125 sizeof(raw_super->uuid));
3126
d1b959c8
DLM		 3127 /*
3128 * The BLKZONED feature indicates that the drive was formatted with
3129 * zone alignment optimization. This is optional for host-aware
3130 * devices, but mandatory for host-managed zoned block devices.
3131 */
3132#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3133 if (f2fs_sb_has_blkzoned(sbi)) {
d1b959c8 3134 f2fs_msg(sb, KERN_ERR,
bda52397 3135 "Zoned block device support is not enabled");
1727f317 3136 err = -EOPNOTSUPP;
d1b959c8
DLM		 3137 goto free_sb_buf;
3138 }
d1b959c8 3139#endif
498c5e9f 3140 default_options(sbi);
aff063e2 3141 /* parse mount options */
dabc4a5c
JK		 3142 options = kstrdup((const char *)data, GFP_KERNEL);
3143 if (data && !options) {
3144 err = -ENOMEM;
aff063e2 3145 goto free_sb_buf;
dabc4a5c
JK		 3146 }
3147
3148 err = parse_options(sb, options);
3149 if (err)
3150 goto free_options;
aff063e2 3151
e0afc4d6
CY		 3152 sbi->max_file_blocks = max_file_blocks();
3153 sb->s_maxbytes = sbi->max_file_blocks <<
3154 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3155 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3156
0abd675e
CY		 3157#ifdef CONFIG_QUOTA
3158 sb->dq_op = &f2fs_quota_operations;
7beb01f7 3159 if (f2fs_sb_has_quota_ino(sbi))
ea676733
JK		 3160 sb->s_qcop = &dquot_quotactl_sysfile_ops;
3161 else
3162 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3163 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3164
7beb01f7 3165 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3166 for (i = 0; i < MAXQUOTAS; i++) {
3167 if (f2fs_qf_ino(sbi->sb, i))
3168 sbi->nquota_files++;
3169 }
3170 }
0abd675e
CY		 3171#endif
3172
aff063e2 3173 sb->s_op = &f2fs_sops;
643fa961 3174#ifdef CONFIG_FS_ENCRYPTION
0b81d077 3175 sb->s_cop = &f2fs_cryptops;
ffcc4182 3176#endif
aff063e2
JK		 3177 sb->s_xattr = f2fs_xattr_handlers;
3178 sb->s_export_op = &f2fs_export_ops;
3179 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3180 sb->s_time_gran = 1;
1751e8a6
LT		 3181 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3182 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3183 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3184 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3185
3186 /* init f2fs-specific super block info */
e8240f65 3187 sbi->valid_super_block = valid_super_block;
aff063e2 3188 mutex_init(&sbi->gc_mutex);
853137ce 3189 mutex_init(&sbi->writepages);
aff063e2 3190 mutex_init(&sbi->cp_mutex);
b3582c68 3191 init_rwsem(&sbi->node_write);
59c9081b 3192 init_rwsem(&sbi->node_change);
315df839
JK		 3193
3194 /* disallow all the data/node/meta page writes */
3195 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3196 spin_lock_init(&sbi->stat_lock);
971767ca 3197
b0af6d49
CY		 3198 /* init iostat info */
3199 spin_lock_init(&sbi->iostat_lock);
3200 sbi->iostat_enable = false;
3201
458e6197 3202 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3203 int n = (i == META) ? 1: NR_TEMP_TYPE;
3204 int j;
3205
c8606593
KC		 3206 sbi->write_io[i] =
3207 f2fs_kmalloc(sbi,
3208 array_size(n,
3209 sizeof(struct f2fs_bio_info)),
3210 GFP_KERNEL);
b63def91
CJ		 3211 if (!sbi->write_io[i]) {
3212 err = -ENOMEM;
0b2103e8 3213 goto free_bio_info;
b63def91 3214 }
a912b54d
JK		 3215
3216 for (j = HOT; j < n; j++) {
3217 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3218 sbi->write_io[i][j].sbi = sbi;
3219 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3220 spin_lock_init(&sbi->write_io[i][j].io_lock);
3221 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
a912b54d 3222 }
458e6197 3223 }
971767ca 3224
b873b798 3225 init_rwsem(&sbi->cp_rwsem);
fb51b5ef 3226 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3227 init_sb_info(sbi);
3228
523be8a6
JK		 3229 err = init_percpu_info(sbi);
3230 if (err)
d7997e63 3231 goto free_bio_info;
523be8a6 3232
0a595eba
JK		 3233 if (F2FS_IO_SIZE(sbi) > 1) {
3234 sbi->write_io_dummy =
a3ebfe4f 3235 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3236 if (!sbi->write_io_dummy) {
3237 err = -ENOMEM;
d7997e63 3238 goto free_percpu;
1727f317 3239 }
0a595eba
JK		 3240 }
3241
aff063e2
JK		 3242 /* get an inode for meta space */
3243 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3244 if (IS_ERR(sbi->meta_inode)) {
a07ef784 3245 f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode");
aff063e2 3246 err = PTR_ERR(sbi->meta_inode);
0a595eba 3247 goto free_io_dummy;
aff063e2
JK		 3248 }
3249
4d57b86d 3250 err = f2fs_get_valid_checkpoint(sbi);
a07ef784
NJ		 3251 if (err) {
3252 f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint");
aff063e2 3253 goto free_meta_inode;
a07ef784 3254 }
aff063e2 3255
af033b2a
CY		 3256 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3257 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3258 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3259 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3260 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3261 }
af033b2a 3262
3c62be17
JK		 3263 /* Initialize device list */
3264 err = f2fs_scan_devices(sbi);
3265 if (err) {
3266 f2fs_msg(sb, KERN_ERR, "Failed to find devices");
3267 goto free_devices;
3268 }
3269
aff063e2
JK		 3270 sbi->total_valid_node_count =
3271 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3272 percpu_counter_set(&sbi->total_valid_inode_count,
3273 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3274 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3275 sbi->total_valid_block_count =
3276 le64_to_cpu(sbi->ckpt->valid_block_count);
3277 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3278 sbi->reserved_blocks = 0;
80d42145 3279 sbi->current_reserved_blocks = 0;
7e65be49 3280 limit_reserve_root(sbi);
41382ec4 3281
c227f912
CY		 3282 for (i = 0; i < NR_INODE_TYPE; i++) {
3283 INIT_LIST_HEAD(&sbi->inode_list[i]);
3284 spin_lock_init(&sbi->inode_lock[i]);
3285 }
aff063e2 3286
4d57b86d 3287 f2fs_init_extent_cache_info(sbi);
1dcc336b 3288
4d57b86d 3289 f2fs_init_ino_entry_info(sbi);
aff063e2 3290
50fa53ec
CY		 3291 f2fs_init_fsync_node_info(sbi);
3292
aff063e2 3293 /* setup f2fs internal modules */
4d57b86d 3294 err = f2fs_build_segment_manager(sbi);
a07ef784
NJ		 3295 if (err) {
3296 f2fs_msg(sb, KERN_ERR,
3297 "Failed to initialize F2FS segment manager");
aff063e2 3298 goto free_sm;
a07ef784 3299 }
4d57b86d 3300 err = f2fs_build_node_manager(sbi);
a07ef784
NJ		 3301 if (err) {
3302 f2fs_msg(sb, KERN_ERR,
3303 "Failed to initialize F2FS node manager");
aff063e2 3304 goto free_nm;
a07ef784 3305 }
aff063e2 3306
8f1dbbbb
SL		 3307 /* For write statistics */
3308 if (sb->s_bdev->bd_part)
3309 sbi->sectors_written_start =
dbae2c55
MC		 3310 (u64)part_stat_read(sb->s_bdev->bd_part,
3311 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3312
3313 /* Read accumulated write IO statistics if exists */
3314 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3315 if (__exist_node_summaries(sbi))
3316 sbi->kbytes_written =
b2dde6fc 3317 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3318
4d57b86d 3319 f2fs_build_gc_manager(sbi);
aff063e2 3320
60aa4d55
ST		 3321 err = f2fs_build_stats(sbi);
3322 if (err)
3323 goto free_nm;
3324
aff063e2
JK		 3325 /* get an inode for node space */
3326 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3327 if (IS_ERR(sbi->node_inode)) {
a07ef784 3328 f2fs_msg(sb, KERN_ERR, "Failed to read node inode");
aff063e2 3329 err = PTR_ERR(sbi->node_inode);
60aa4d55 3330 goto free_stats;
aff063e2
JK		 3331 }
3332
aff063e2
JK		 3333 /* read root inode and dentry */
3334 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3335 if (IS_ERR(root)) {
a07ef784 3336 f2fs_msg(sb, KERN_ERR, "Failed to read root inode");
aff063e2 3337 err = PTR_ERR(root);
60aa4d55 3338 goto free_node_inode;
aff063e2 3339 }
bcbfbd60
CY		 3340 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3341 !root->i_size || !root->i_nlink) {
9d847950 3342 iput(root);
8f99a946 3343 err = -EINVAL;
60aa4d55 3344 goto free_node_inode;
8f99a946 3345 }
aff063e2
JK		 3346
3347 sb->s_root = d_make_root(root); /* allocate root dentry */
3348 if (!sb->s_root) {
3349 err = -ENOMEM;
025cdb16 3350 goto free_node_inode;
aff063e2
JK		 3351 }
3352
dc6b2055 3353 err = f2fs_register_sysfs(sbi);
b59d0bae 3354 if (err)
a398101a 3355 goto free_root_inode;
b59d0bae 3356
ea676733 3357#ifdef CONFIG_QUOTA
76cf05d7 3358 /* Enable quota usage during mount */
7beb01f7 3359 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3360 err = f2fs_enable_quotas(sb);
730746ce 3361 if (err)
ea676733
JK		 3362 f2fs_msg(sb, KERN_ERR,
3363 "Cannot turn on quotas: error %d", err);
ea676733
JK		 3364 }
3365#endif
4b2414d0 3366 /* if there are nt orphan nodes free them */
4d57b86d 3367 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3368 if (err)
ea676733 3369 goto free_meta;
4b2414d0 3370
4354994f 3371 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3372 goto reset_checkpoint;
4354994f 3373
6437d1b0
JK		 3374 /* recover fsynced data */
3375 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
081d78c2
JK		 3376 /*
3377 * mount should be failed, when device has readonly mode, and
3378 * previous checkpoint was not done by clean system shutdown.
3379 */
3380 if (bdev_read_only(sb->s_bdev) &&
aaec2b1d 3381 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
081d78c2 3382 err = -EROFS;
4b2414d0 3383 goto free_meta;
081d78c2 3384 }
2adc3505
CY		 3385
3386 if (need_fsck)
3387 set_sbi_flag(sbi, SBI_NEED_FSCK);
3388
aa2c8c43
CY		 3389 if (skip_recovery)
3390 goto reset_checkpoint;
a468f0ef 3391
4d57b86d 3392 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3393 if (err < 0) {
aa2c8c43
CY		 3394 if (err != -ENOMEM)
3395 skip_recovery = true;
2adc3505 3396 need_fsck = true;
6437d1b0 3397 f2fs_msg(sb, KERN_ERR,
99e3e858 3398 "Cannot recover all fsync data errno=%d", err);
4b2414d0 3399 goto free_meta;
ed2e621a 3400 }
6781eabb 3401 } else {
4d57b86d 3402 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3403
3404 if (!f2fs_readonly(sb) && err > 0) {
3405 err = -EINVAL;
3406 f2fs_msg(sb, KERN_ERR,
3407 "Need to recover fsync data");
ea676733 3408 goto free_meta;
6781eabb 3409 }
6437d1b0 3410 }
aa2c8c43 3411reset_checkpoint:
4d57b86d 3412 /* f2fs_recover_fsync_data() cleared this already */
315df839 3413 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3414
4354994f
DR		 3415 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3416 err = f2fs_disable_checkpoint(sbi);
3417 if (err)
812a9597 3418 goto sync_free_meta;
4354994f
DR		 3419 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3420 f2fs_enable_checkpoint(sbi);
3421 }
3422
6437d1b0
JK		 3423 /*
3424 * If filesystem is not mounted as read-only then
3425 * do start the gc_thread.
3426 */
6c029932 3427 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
6437d1b0 3428 /* After POR, we can run background GC thread.*/
4d57b86d 3429 err = f2fs_start_gc_thread(sbi);
6437d1b0 3430 if (err)
812a9597 3431 goto sync_free_meta;
6437d1b0 3432 }
5222595d 3433 kvfree(options);
da554e48 3434
3435 /* recover broken superblock */
f2353d7b 3436 if (recovery) {
41214b3c
CY		 3437 err = f2fs_commit_super(sbi, true);
3438 f2fs_msg(sb, KERN_INFO,
99e3e858 3439 "Try to recover %dth superblock, ret: %d",
41214b3c 3440 sbi->valid_super_block ? 1 : 2, err);
da554e48 3441 }
3442
bae01eda
CY		 3443 f2fs_join_shrinker(sbi);
3444
84b89e5d
JK		 3445 f2fs_tuning_parameters(sbi);
3446
1200abb2
JK		 3447 f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx",
3448 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3449 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3450 f2fs_update_time(sbi, REQ_TIME);
db610a64 3451 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3452 return 0;
6437d1b0 3453
812a9597
JK		 3454sync_free_meta:
3455 /* safe to flush all the data */
3456 sync_filesystem(sbi->sb);
aa2c8c43 3457 retry_cnt = 0;
812a9597 3458
4b2414d0 3459free_meta:
ea676733 3460#ifdef CONFIG_QUOTA
26b5a079 3461 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3462 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3463 f2fs_quota_off_umount(sbi->sb);
3464#endif
4b2414d0 3465 /*
4d57b86d 3466 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3467 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3468 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3469 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3470 */
3471 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3472 /* evict some inodes being cached by GC */
3473 evict_inodes(sb);
dc6b2055 3474 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3475free_root_inode:
3476 dput(sb->s_root);
3477 sb->s_root = NULL;
3478free_node_inode:
4d57b86d 3479 f2fs_release_ino_entry(sbi, true);
bae01eda 3480 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3481 iput(sbi->node_inode);
7c77bf7d 3482 sbi->node_inode = NULL;
60aa4d55
ST		 3483free_stats:
3484 f2fs_destroy_stats(sbi);
aff063e2 3485free_nm:
4d57b86d 3486 f2fs_destroy_node_manager(sbi);
aff063e2 3487free_sm:
4d57b86d 3488 f2fs_destroy_segment_manager(sbi);
3c62be17
JK		 3489free_devices:
3490 destroy_device_list(sbi);
5222595d 3491 kvfree(sbi->ckpt);
aff063e2
JK		 3492free_meta_inode:
3493 make_bad_inode(sbi->meta_inode);
3494 iput(sbi->meta_inode);
7c77bf7d 3495 sbi->meta_inode = NULL;
0a595eba
JK		 3496free_io_dummy:
3497 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3498free_percpu:
3499 destroy_percpu_info(sbi);
3500free_bio_info:
a912b54d 3501 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3502 kvfree(sbi->write_io[i]);
d7997e63 3503free_options:
4b2414d0
CY		 3504#ifdef CONFIG_QUOTA
3505 for (i = 0; i < MAXQUOTAS; i++)
5222595d 3506 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3507#endif
5222595d 3508 kvfree(options);
aff063e2 3509free_sb_buf:
5222595d 3510 kvfree(raw_super);
aff063e2 3511free_sbi:
43b6573b
KM		 3512 if (sbi->s_chksum_driver)
3513 crypto_free_shash(sbi->s_chksum_driver);
5222595d 3514 kvfree(sbi);
ed2e621a
JK		 3515
3516 /* give only one another chance */
aa2c8c43
CY		 3517 if (retry_cnt > 0 && skip_recovery) {
3518 retry_cnt--;
ed2e621a
JK		 3519 shrink_dcache_sb(sb);
3520 goto try_onemore;
3521 }
aff063e2
JK		 3522 return err;
3523}
3524
3525static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3526 const char *dev_name, void *data)
3527{
3528 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3529}
3530
30a5537f
JK		 3531static void kill_f2fs_super(struct super_block *sb)
3532{
cce13252 3533 if (sb->s_root) {
1cb50f87
JK		 3534 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3535
3536 set_sbi_flag(sbi, SBI_IS_CLOSE);
3537 f2fs_stop_gc_thread(sbi);
3538 f2fs_stop_discard_thread(sbi);
3539
3540 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3541 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3542 struct cp_control cpc = {
3543 .reason = CP_UMOUNT,
3544 };
3545 f2fs_write_checkpoint(sbi, &cpc);
3546 }
1378752b
CY		 3547
3548 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3549 sb->s_flags &= ~SB_RDONLY;
cce13252 3550 }
30a5537f
JK		 3551 kill_block_super(sb);
3552}
3553
aff063e2
JK		 3554static struct file_system_type f2fs_fs_type = {
3555 .owner = THIS_MODULE,
3556 .name = "f2fs",
3557 .mount = f2fs_mount,
30a5537f 3558 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3559 .fs_flags = FS_REQUIRES_DEV,
3560};
7f78e035 3561MODULE_ALIAS_FS("f2fs");
aff063e2 3562
6e6093a8 3563static int __init init_inodecache(void)
aff063e2 3564{
5d097056
VD		 3565 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3566 sizeof(struct f2fs_inode_info), 0,
3567 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3568 if (!f2fs_inode_cachep)
aff063e2
JK		 3569 return -ENOMEM;
3570 return 0;
3571}
3572
3573static void destroy_inodecache(void)
3574{
3575 /*
3576 * Make sure all delayed rcu free inodes are flushed before we
3577 * destroy cache.
3578 */
3579 rcu_barrier();
3580 kmem_cache_destroy(f2fs_inode_cachep);
3581}
3582
3583static int __init init_f2fs_fs(void)
3584{
3585 int err;
3586
4071e67c
AP		 3587 if (PAGE_SIZE != F2FS_BLKSIZE) {
3588 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3589 PAGE_SIZE, F2FS_BLKSIZE);
3590 return -EINVAL;
3591 }
3592
c0508650
JK		 3593 f2fs_build_trace_ios();
3594
aff063e2
JK		 3595 err = init_inodecache();
3596 if (err)
3597 goto fail;
4d57b86d 3598 err = f2fs_create_node_manager_caches();
aff063e2 3599 if (err)
9890ff3f 3600 goto free_inodecache;
4d57b86d 3601 err = f2fs_create_segment_manager_caches();
aff063e2 3602 if (err)
9890ff3f 3603 goto free_node_manager_caches;
4d57b86d 3604 err = f2fs_create_checkpoint_caches();
aff063e2 3605 if (err)
06292073 3606 goto free_segment_manager_caches;
4d57b86d 3607 err = f2fs_create_extent_cache();
1dcc336b
CY		 3608 if (err)
3609 goto free_checkpoint_caches;
dc6b2055 3610 err = f2fs_init_sysfs();
a398101a 3611 if (err)
1dcc336b 3612 goto free_extent_cache;
2658e50d 3613 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3614 if (err)
a398101a 3615 goto free_sysfs;
2658e50d
JK		 3616 err = register_filesystem(&f2fs_fs_type);
3617 if (err)
3618 goto free_shrinker;
21acc07d 3619 f2fs_create_root_stats();
6dbb1796
EB		 3620 err = f2fs_init_post_read_processing();
3621 if (err)
3622 goto free_root_stats;
9890ff3f
ZH		 3623 return 0;
3624
6dbb1796
EB		 3625free_root_stats:
3626 f2fs_destroy_root_stats();
787c7b8c 3627 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3628free_shrinker:
3629 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3630free_sysfs:
dc6b2055 3631 f2fs_exit_sysfs();
1dcc336b 3632free_extent_cache:
4d57b86d 3633 f2fs_destroy_extent_cache();
9890ff3f 3634free_checkpoint_caches:
4d57b86d 3635 f2fs_destroy_checkpoint_caches();
7fd9e544 3636free_segment_manager_caches:
4d57b86d 3637 f2fs_destroy_segment_manager_caches();
9890ff3f 3638free_node_manager_caches:
4d57b86d 3639 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3640free_inodecache:
3641 destroy_inodecache();
aff063e2
JK		 3642fail:
3643 return err;
3644}
3645
3646static void __exit exit_f2fs_fs(void)
3647{
6dbb1796 3648 f2fs_destroy_post_read_processing();
4589d25d 3649 f2fs_destroy_root_stats();
aff063e2 3650 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3651 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3652 f2fs_exit_sysfs();
4d57b86d
CY		 3653 f2fs_destroy_extent_cache();
3654 f2fs_destroy_checkpoint_caches();
3655 f2fs_destroy_segment_manager_caches();
3656 f2fs_destroy_node_manager_caches();
aff063e2 3657 destroy_inodecache();
351f4fba 3658 f2fs_destroy_trace_ios();
aff063e2
JK		 3659}
3660
3661module_init(init_f2fs_fs)
3662module_exit(exit_f2fs_fs)
3663
3664MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3665MODULE_DESCRIPTION("Flash Friendly File System");
3666MODULE_LICENSE("GPL");
b4b9d34c 3667
Ubuntu Hirsute Linux kernel mirror