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f2fs: give some messages for inline_xattr_size
[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
SY		 759 case Opt_test_dummy_encryption:
760#ifdef CONFIG_F2FS_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);
841 max_size = DEF_ADDRS_PER_INODE -
500e0b28
CY		 842 F2FS_TOTAL_EXTRA_ATTR_SIZE / sizeof(__le32) -
843 DEF_INLINE_RESERVED_SIZE -
70db5b04
JK		 844 MIN_INLINE_DENTRY_SIZE / sizeof(__le32);
845
846 if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
847 F2FS_OPTION(sbi).inline_xattr_size > max_size) {
6afc662e 848 f2fs_msg(sb, KERN_ERR,
70db5b04
JK		 849 "inline xattr size is out of range: %d ~ %d",
850 min_size, max_size);
6afc662e
CY		 851 return -EINVAL;
852 }
853 }
0cdd3195 854
4354994f
DR		 855 if (test_opt(sbi, DISABLE_CHECKPOINT) && test_opt(sbi, LFS)) {
856 f2fs_msg(sb, KERN_ERR,
857 "LFS not compatible with checkpoint=disable\n");
858 return -EINVAL;
859 }
860
0cdd3195
HL		 861 /* Not pass down write hints if the number of active logs is lesser
862 * than NR_CURSEG_TYPE.
863 */
63189b78
CY		 864 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
865 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 866 return 0;
867}
868
aff063e2
JK		 869static struct inode *f2fs_alloc_inode(struct super_block *sb)
870{
871 struct f2fs_inode_info *fi;
872
a0acdfe0 873 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 874 if (!fi)
875 return NULL;
876
877 init_once((void *) fi);
878
434720fa 879 /* Initialize f2fs-specific inode info */
204706c7 880 atomic_set(&fi->dirty_pages, 0);
d928bfbf 881 init_rwsem(&fi->i_sem);
2710fd7e 882 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 883 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 884 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 885 INIT_LIST_HEAD(&fi->inmem_pages);
886 mutex_init(&fi->inmem_lock);
b2532c69
CY		 887 init_rwsem(&fi->i_gc_rwsem[READ]);
888 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 889 init_rwsem(&fi->i_mmap_sem);
27161f13 890 init_rwsem(&fi->i_xattr_sem);
aff063e2 891
ab9fa662
JK		 892 /* Will be used by directory only */
893 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 894
aff063e2
JK		 895 return &fi->vfs_inode;
896}
897
531ad7d5
JK		 898static int f2fs_drop_inode(struct inode *inode)
899{
b8d96a30 900 int ret;
531ad7d5
JK		 901 /*
902 * This is to avoid a deadlock condition like below.
903 * writeback_single_inode(inode)
904 * - f2fs_write_data_page
905 * - f2fs_gc -> iput -> evict
906 * - inode_wait_for_writeback(inode)
907 */
0f18b462 908 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 909 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 910 /* to avoid evict_inode call simultaneously */
911 atomic_inc(&inode->i_count);
06e1bc05
JK		 912 spin_unlock(&inode->i_lock);
913
914 /* some remained atomic pages should discarded */
915 if (f2fs_is_atomic_file(inode))
4d57b86d 916 f2fs_drop_inmem_pages(inode);
06e1bc05 917
3e72f721
JK		 918 /* should remain fi->extent_tree for writepage */
919 f2fs_destroy_extent_node(inode);
920
06e1bc05 921 sb_start_intwrite(inode->i_sb);
fc9581c8 922 f2fs_i_size_write(inode, 0);
06e1bc05 923
a0770e13 924 f2fs_submit_merged_write_cond(F2FS_I_SB(inode),
925 inode, NULL, 0, DATA);
926 truncate_inode_pages_final(inode->i_mapping);
927
06e1bc05 928 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 929 f2fs_truncate(inode);
06e1bc05
JK		 930
931 sb_end_intwrite(inode->i_sb);
932
06e1bc05 933 spin_lock(&inode->i_lock);
3e72f721 934 atomic_dec(&inode->i_count);
06e1bc05 935 }
b8d96a30 936 trace_f2fs_drop_inode(inode, 0);
531ad7d5 937 return 0;
06e1bc05 938 }
b8d96a30
HP		 939 ret = generic_drop_inode(inode);
940 trace_f2fs_drop_inode(inode, ret);
941 return ret;
531ad7d5
JK		 942}
943
7c45729a 944int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 945{
0f18b462 946 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 947 int ret = 0;
0f18b462 948
0f18b462
JK		 949 spin_lock(&sbi->inode_lock[DIRTY_META]);
950 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 951 ret = 1;
952 } else {
953 set_inode_flag(inode, FI_DIRTY_INODE);
954 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 955 }
7c45729a
JK		 956 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
957 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 958 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 959 inc_page_count(sbi, F2FS_DIRTY_IMETA);
960 }
338bbfa0 961 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 962 return ret;
0f18b462
JK		 963}
964
965void f2fs_inode_synced(struct inode *inode)
966{
967 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
968
969 spin_lock(&sbi->inode_lock[DIRTY_META]);
970 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
971 spin_unlock(&sbi->inode_lock[DIRTY_META]);
972 return;
973 }
7c45729a
JK		 974 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
975 list_del_init(&F2FS_I(inode)->gdirty_list);
976 dec_page_count(sbi, F2FS_DIRTY_IMETA);
977 }
0f18b462 978 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 979 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 980 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 981 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 982}
983
b56ab837
JK		 984/*
985 * f2fs_dirty_inode() is called from __mark_inode_dirty()
986 *
987 * We should call set_dirty_inode to write the dirty inode through write_inode.
988 */
989static void f2fs_dirty_inode(struct inode *inode, int flags)
990{
991 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
992
993 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
994 inode->i_ino == F2FS_META_INO(sbi))
995 return;
996
997 if (flags == I_DIRTY_TIME)
998 return;
999
1000 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
1001 clear_inode_flag(inode, FI_AUTO_RECOVER);
1002
7c45729a 1003 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 1004}
1005
aff063e2
JK		 1006static void f2fs_i_callback(struct rcu_head *head)
1007{
1008 struct inode *inode = container_of(head, struct inode, i_rcu);
1009 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1010}
1011
25ca923b 1012static void f2fs_destroy_inode(struct inode *inode)
aff063e2
JK		 1013{
1014 call_rcu(&inode->i_rcu, f2fs_i_callback);
1015}
1016
523be8a6
JK		 1017static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1018{
41382ec4 1019 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 1020 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 1021}
1022
3c62be17
JK		 1023static void destroy_device_list(struct f2fs_sb_info *sbi)
1024{
1025 int i;
1026
1027 for (i = 0; i < sbi->s_ndevs; i++) {
1028 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1029#ifdef CONFIG_BLK_DEV_ZONED
5222595d 1030 kvfree(FDEV(i).blkz_type);
3c62be17
JK		 1031#endif
1032 }
5222595d 1033 kvfree(sbi->devs);
3c62be17
JK		 1034}
1035
aff063e2
JK		 1036static void f2fs_put_super(struct super_block *sb)
1037{
1038 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1039 int i;
cf5c759f 1040 bool dropped;
aff063e2 1041
0abd675e 1042 f2fs_quota_off_umount(sb);
aff063e2 1043
2658e50d
JK		 1044 /* prevent remaining shrinker jobs */
1045 mutex_lock(&sbi->umount_mutex);
1046
85dc2f2c
JK		 1047 /*
1048 * We don't need to do checkpoint when superblock is clean.
1049 * But, the previous checkpoint was not done by umount, it needs to do
1050 * clean checkpoint again.
1051 */
4354994f
DR		 1052 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1053 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1054 struct cp_control cpc = {
1055 .reason = CP_UMOUNT,
1056 };
4d57b86d 1057 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1058 }
aff063e2 1059
4e6a8d9b 1060 /* be sure to wait for any on-going discard commands */
03f2c02d 1061 dropped = f2fs_issue_discard_timeout(sbi);
4e6a8d9b 1062
7d20c8ab
CY		 1063 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1064 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1065 struct cp_control cpc = {
1066 .reason = CP_UMOUNT | CP_TRIMMED,
1067 };
4d57b86d 1068 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1069 }
1070
cf779cab
JK		 1071 /*
1072 * normally superblock is clean, so we need to release this.
1073 * In addition, EIO will skip do checkpoint, we need this as well.
1074 */
4d57b86d 1075 f2fs_release_ino_entry(sbi, true);
6f12ac25 1076
2658e50d
JK		 1077 f2fs_leave_shrinker(sbi);
1078 mutex_unlock(&sbi->umount_mutex);
1079
17c19120 1080 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1081 f2fs_flush_merged_writes(sbi);
17c19120 1082
50fa53ec
CY		 1083 f2fs_wait_on_all_pages_writeback(sbi);
1084
1085 f2fs_bug_on(sbi, sbi->fsync_node_num);
1086
aff063e2 1087 iput(sbi->node_inode);
7c77bf7d
JK		 1088 sbi->node_inode = NULL;
1089
aff063e2 1090 iput(sbi->meta_inode);
7c77bf7d 1091 sbi->meta_inode = NULL;
aff063e2 1092
60aa4d55
ST		 1093 /*
1094 * iput() can update stat information, if f2fs_write_checkpoint()
1095 * above failed with error.
1096 */
1097 f2fs_destroy_stats(sbi);
1098
aff063e2 1099 /* destroy f2fs internal modules */
4d57b86d
CY		 1100 f2fs_destroy_node_manager(sbi);
1101 f2fs_destroy_segment_manager(sbi);
aff063e2 1102
5222595d 1103 kvfree(sbi->ckpt);
a398101a 1104
dc6b2055 1105 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1106
1107 sb->s_fs_info = NULL;
43b6573b
KM		 1108 if (sbi->s_chksum_driver)
1109 crypto_free_shash(sbi->s_chksum_driver);
5222595d 1110 kvfree(sbi->raw_super);
523be8a6 1111
3c62be17 1112 destroy_device_list(sbi);
b6895e8f 1113 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1114#ifdef CONFIG_QUOTA
1115 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1116 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1117#endif
523be8a6 1118 destroy_percpu_info(sbi);
a912b54d 1119 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d
JK		 1120 kvfree(sbi->write_io[i]);
1121 kvfree(sbi);
aff063e2
JK		 1122}
1123
1124int f2fs_sync_fs(struct super_block *sb, int sync)
1125{
1126 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1127 int err = 0;
aff063e2 1128
1f227a3e
JK		 1129 if (unlikely(f2fs_cp_error(sbi)))
1130 return 0;
4354994f
DR		 1131 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1132 return 0;
1f227a3e 1133
a2a4a7e4
NJ		 1134 trace_f2fs_sync_fs(sb, sync);
1135
4b2414d0
CY		 1136 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1137 return -EAGAIN;
1138
b7473754 1139 if (sync) {
d5053a34
JK		 1140 struct cp_control cpc;
1141
119ee914
JK		 1142 cpc.reason = __get_cp_reason(sbi);
1143
b7473754 1144 mutex_lock(&sbi->gc_mutex);
4d57b86d 1145 err = f2fs_write_checkpoint(sbi, &cpc);
b7473754 1146 mutex_unlock(&sbi->gc_mutex);
b7473754 1147 }
05ca3632 1148 f2fs_trace_ios(NULL, 1);
aff063e2 1149
c34f42e2 1150 return err;
aff063e2
JK		 1151}
1152
d6212a5f
CL		 1153static int f2fs_freeze(struct super_block *sb)
1154{
77888c1e 1155 if (f2fs_readonly(sb))
d6212a5f
CL		 1156 return 0;
1157
b4b9d34c
JK		 1158 /* IO error happened before */
1159 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1160 return -EIO;
1161
1162 /* must be clean, since sync_filesystem() was already called */
1163 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1164 return -EINVAL;
1165 return 0;
d6212a5f
CL		 1166}
1167
1168static int f2fs_unfreeze(struct super_block *sb)
1169{
1170 return 0;
1171}
1172
ddc34e32
CY		 1173#ifdef CONFIG_QUOTA
1174static int f2fs_statfs_project(struct super_block *sb,
1175 kprojid_t projid, struct kstatfs *buf)
1176{
1177 struct kqid qid;
1178 struct dquot *dquot;
1179 u64 limit;
1180 u64 curblock;
1181
1182 qid = make_kqid_projid(projid);
1183 dquot = dqget(sb, qid);
1184 if (IS_ERR(dquot))
1185 return PTR_ERR(dquot);
955ac6e5 1186 spin_lock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1187
1188 limit = (dquot->dq_dqb.dqb_bsoftlimit ?
1189 dquot->dq_dqb.dqb_bsoftlimit :
1190 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
1191 if (limit && buf->f_blocks > limit) {
1192 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1193 buf->f_blocks = limit;
1194 buf->f_bfree = buf->f_bavail =
1195 (buf->f_blocks > curblock) ?
1196 (buf->f_blocks - curblock) : 0;
1197 }
1198
1199 limit = dquot->dq_dqb.dqb_isoftlimit ?
1200 dquot->dq_dqb.dqb_isoftlimit :
1201 dquot->dq_dqb.dqb_ihardlimit;
1202 if (limit && buf->f_files > limit) {
1203 buf->f_files = limit;
1204 buf->f_ffree =
1205 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1206 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1207 }
1208
955ac6e5 1209 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1210 dqput(dquot);
1211 return 0;
1212}
1213#endif
1214
aff063e2
JK		 1215static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1216{
1217 struct super_block *sb = dentry->d_sb;
1218 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1219 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1220 block_t total_count, user_block_count, start_count;
0cc091d0 1221 u64 avail_node_count;
aff063e2
JK		 1222
1223 total_count = le64_to_cpu(sbi->raw_super->block_count);
1224 user_block_count = sbi->user_block_count;
1225 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1226 buf->f_type = F2FS_SUPER_MAGIC;
1227 buf->f_bsize = sbi->blocksize;
1228
1229 buf->f_blocks = total_count - start_count;
f66c027e 1230 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1231 sbi->current_reserved_blocks;
4354994f
DR		 1232 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1233 buf->f_bfree = 0;
1234 else
1235 buf->f_bfree -= sbi->unusable_block_count;
1236
63189b78
CY		 1237 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1238 buf->f_bavail = buf->f_bfree -
1239 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1240 else
1241 buf->f_bavail = 0;
aff063e2 1242
292c196a
CY		 1243 avail_node_count = sbi->total_node_count - sbi->nquota_files -
1244 F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1245
1246 if (avail_node_count > user_block_count) {
1247 buf->f_files = user_block_count;
1248 buf->f_ffree = buf->f_bavail;
1249 } else {
1250 buf->f_files = avail_node_count;
1251 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1252 buf->f_bavail);
1253 }
aff063e2 1254
5a20d339 1255 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1256 buf->f_fsid.val[0] = (u32)id;
1257 buf->f_fsid.val[1] = (u32)(id >> 32);
1258
ddc34e32
CY		 1259#ifdef CONFIG_QUOTA
1260 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1261 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1262 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1263 }
1264#endif
aff063e2
JK		 1265 return 0;
1266}
1267
4b2414d0
CY		 1268static inline void f2fs_show_quota_options(struct seq_file *seq,
1269 struct super_block *sb)
1270{
1271#ifdef CONFIG_QUOTA
1272 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1273
63189b78 1274 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1275 char *fmtname = "";
1276
63189b78 1277 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1278 case QFMT_VFS_OLD:
1279 fmtname = "vfsold";
1280 break;
1281 case QFMT_VFS_V0:
1282 fmtname = "vfsv0";
1283 break;
1284 case QFMT_VFS_V1:
1285 fmtname = "vfsv1";
1286 break;
1287 }
1288 seq_printf(seq, ",jqfmt=%s", fmtname);
1289 }
1290
63189b78
CY		 1291 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1292 seq_show_option(seq, "usrjquota",
1293 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1294
63189b78
CY		 1295 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1296 seq_show_option(seq, "grpjquota",
1297 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1298
63189b78
CY		 1299 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1300 seq_show_option(seq, "prjjquota",
1301 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1302#endif
1303}
1304
aff063e2
JK		 1305static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1306{
1307 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1308
6aefd93b
JK		 1309 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1310 if (test_opt(sbi, FORCE_FG_GC))
1311 seq_printf(seq, ",background_gc=%s", "sync");
1312 else
1313 seq_printf(seq, ",background_gc=%s", "on");
1314 } else {
696c018c 1315 seq_printf(seq, ",background_gc=%s", "off");
6aefd93b 1316 }
aff063e2
JK		 1317 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1318 seq_puts(seq, ",disable_roll_forward");
1319 if (test_opt(sbi, DISCARD))
1320 seq_puts(seq, ",discard");
1321 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1322 seq_puts(seq, ",no_heap");
1323 else
1324 seq_puts(seq, ",heap");
aff063e2
JK		 1325#ifdef CONFIG_F2FS_FS_XATTR
1326 if (test_opt(sbi, XATTR_USER))
1327 seq_puts(seq, ",user_xattr");
1328 else
1329 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1330 if (test_opt(sbi, INLINE_XATTR))
1331 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1332 else
1333 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1334 if (test_opt(sbi, INLINE_XATTR_SIZE))
1335 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1336 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1337#endif
1338#ifdef CONFIG_F2FS_FS_POSIX_ACL
1339 if (test_opt(sbi, POSIX_ACL))
1340 seq_puts(seq, ",acl");
1341 else
1342 seq_puts(seq, ",noacl");
1343#endif
1344 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1345 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1346 if (test_opt(sbi, INLINE_DATA))
1347 seq_puts(seq, ",inline_data");
75342797
WL		 1348 else
1349 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1350 if (test_opt(sbi, INLINE_DENTRY))
1351 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1352 else
1353 seq_puts(seq, ",noinline_dentry");
b270ad6f 1354 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1355 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1356 if (test_opt(sbi, NOBARRIER))
1357 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1358 if (test_opt(sbi, FASTBOOT))
1359 seq_puts(seq, ",fastboot");
89672159
CY		 1360 if (test_opt(sbi, EXTENT_CACHE))
1361 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1362 else
1363 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1364 if (test_opt(sbi, DATA_FLUSH))
1365 seq_puts(seq, ",data_flush");
36abef4e
JK		 1366
1367 seq_puts(seq, ",mode=");
1368 if (test_opt(sbi, ADAPTIVE))
1369 seq_puts(seq, "adaptive");
1370 else if (test_opt(sbi, LFS))
1371 seq_puts(seq, "lfs");
63189b78 1372 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1373 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1374 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1375 F2FS_OPTION(sbi).root_reserved_blocks,
1376 from_kuid_munged(&init_user_ns,
1377 F2FS_OPTION(sbi).s_resuid),
1378 from_kgid_munged(&init_user_ns,
1379 F2FS_OPTION(sbi).s_resgid));
ec91538d 1380 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1381 seq_printf(seq, ",io_bits=%u",
1382 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1383#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1384 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1385 seq_printf(seq, ",fault_injection=%u",
63189b78 1386 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1387 seq_printf(seq, ",fault_type=%u",
1388 F2FS_OPTION(sbi).fault_info.inject_type);
1389 }
0cc0dec2 1390#endif
0abd675e 1391#ifdef CONFIG_QUOTA
4b2414d0
CY		 1392 if (test_opt(sbi, QUOTA))
1393 seq_puts(seq, ",quota");
0abd675e
CY		 1394 if (test_opt(sbi, USRQUOTA))
1395 seq_puts(seq, ",usrquota");
1396 if (test_opt(sbi, GRPQUOTA))
1397 seq_puts(seq, ",grpquota");
5c57132e
CY		 1398 if (test_opt(sbi, PRJQUOTA))
1399 seq_puts(seq, ",prjquota");
0cc0dec2 1400#endif
4b2414d0 1401 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1402 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1403 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1404 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1405 seq_printf(seq, ",whint_mode=%s", "fs-based");
ff62af20
SY		 1406#ifdef CONFIG_F2FS_FS_ENCRYPTION
1407 if (F2FS_OPTION(sbi).test_dummy_encryption)
1408 seq_puts(seq, ",test_dummy_encryption");
1409#endif
aff063e2 1410
63189b78 1411 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1412 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1413 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1414 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1415
4354994f
DR		 1416 if (test_opt(sbi, DISABLE_CHECKPOINT))
1417 seq_puts(seq, ",checkpoint=disable");
1418
63189b78 1419 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1420 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1421 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1422 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1423 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1424 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
aff063e2
JK		 1425 return 0;
1426}
1427
498c5e9f
YH		 1428static void default_options(struct f2fs_sb_info *sbi)
1429{
1430 /* init some FS parameters */
63189b78
CY		 1431 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1432 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1433 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1434 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1435 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1436 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1437 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1438 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
498c5e9f
YH		 1439
1440 set_opt(sbi, BG_GC);
39133a50 1441 set_opt(sbi, INLINE_XATTR);
498c5e9f 1442 set_opt(sbi, INLINE_DATA);
97c1794a 1443 set_opt(sbi, INLINE_DENTRY);
3e72f721 1444 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1445 set_opt(sbi, NOHEAP);
4354994f 1446 clear_opt(sbi, DISABLE_CHECKPOINT);
1751e8a6 1447 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1448 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1449 set_opt(sbi, DISCARD);
7beb01f7 1450 if (f2fs_sb_has_blkzoned(sbi))
a39e5365
CY		 1451 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1452 else
52763a4b 1453 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
498c5e9f
YH		 1454
1455#ifdef CONFIG_F2FS_FS_XATTR
1456 set_opt(sbi, XATTR_USER);
1457#endif
1458#ifdef CONFIG_F2FS_FS_POSIX_ACL
1459 set_opt(sbi, POSIX_ACL);
1460#endif
36dbd328 1461
d494500a 1462 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1463}
1464
ea676733
JK		 1465#ifdef CONFIG_QUOTA
1466static int f2fs_enable_quotas(struct super_block *sb);
1467#endif
4354994f
DR		 1468
1469static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1470{
812a9597 1471 unsigned int s_flags = sbi->sb->s_flags;
4354994f 1472 struct cp_control cpc;
812a9597
JK		 1473 int err = 0;
1474 int ret;
4354994f 1475
812a9597
JK		 1476 if (s_flags & SB_RDONLY) {
1477 f2fs_msg(sbi->sb, KERN_ERR,
1478 "checkpoint=disable on readonly fs");
1479 return -EINVAL;
1480 }
4354994f
DR		 1481 sbi->sb->s_flags |= SB_ACTIVE;
1482
4354994f
DR		 1483 f2fs_update_time(sbi, DISABLE_TIME);
1484
1485 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
8f31b466 1486 mutex_lock(&sbi->gc_mutex);
4354994f 1487 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
812a9597
JK		 1488 if (err == -ENODATA) {
1489 err = 0;
4354994f 1490 break;
812a9597 1491 }
8f31b466 1492 if (err && err != -EAGAIN)
812a9597 1493 break;
4354994f 1494 }
4354994f 1495
812a9597
JK		 1496 ret = sync_filesystem(sbi->sb);
1497 if (ret || err) {
1498 err = ret ? ret: err;
1499 goto restore_flag;
1500 }
4354994f 1501
812a9597
JK		 1502 if (f2fs_disable_cp_again(sbi)) {
1503 err = -EAGAIN;
1504 goto restore_flag;
1505 }
4354994f
DR		 1506
1507 mutex_lock(&sbi->gc_mutex);
1508 cpc.reason = CP_PAUSE;
1509 set_sbi_flag(sbi, SBI_CP_DISABLED);
1510 f2fs_write_checkpoint(sbi, &cpc);
1511
1512 sbi->unusable_block_count = 0;
1513 mutex_unlock(&sbi->gc_mutex);
812a9597
JK		 1514restore_flag:
1515 sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */
1516 return err;
4354994f
DR		 1517}
1518
1519static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1520{
1521 mutex_lock(&sbi->gc_mutex);
1522 f2fs_dirty_to_prefree(sbi);
1523
1524 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1525 set_sbi_flag(sbi, SBI_IS_DIRTY);
1526 mutex_unlock(&sbi->gc_mutex);
1527
1528 f2fs_sync_fs(sbi->sb, 1);
1529}
1530
696c018c
NJ		 1531static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1532{
1533 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1534 struct f2fs_mount_info org_mount_opt;
0abd675e 1535 unsigned long old_sb_flags;
63189b78 1536 int err;
876dc59e
GZ		 1537 bool need_restart_gc = false;
1538 bool need_stop_gc = false;
9cd81ce3 1539 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f
DR		 1540 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1541 bool checkpoint_changed;
4b2414d0 1542#ifdef CONFIG_QUOTA
4b2414d0
CY		 1543 int i, j;
1544#endif
696c018c
NJ		 1545
1546 /*
1547 * Save the old mount options in case we
1548 * need to restore them.
1549 */
1550 org_mount_opt = sbi->mount_opt;
0abd675e 1551 old_sb_flags = sb->s_flags;
696c018c 1552
4b2414d0 1553#ifdef CONFIG_QUOTA
63189b78 1554 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1555 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1556 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1557 org_mount_opt.s_qf_names[i] =
1558 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1559 GFP_KERNEL);
1560 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1561 for (j = 0; j < i; j++)
5222595d 1562 kvfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1563 return -ENOMEM;
1564 }
1565 } else {
63189b78 1566 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1567 }
1568 }
1569#endif
1570
df728b0f 1571 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1572 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f
JK		 1573 err = f2fs_commit_super(sbi, false);
1574 f2fs_msg(sb, KERN_INFO,
1575 "Try to recover all the superblocks, ret: %d", err);
1576 if (!err)
1577 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1578 }
1579
498c5e9f 1580 default_options(sbi);
26666c8a 1581
696c018c
NJ		 1582 /* parse mount options */
1583 err = parse_options(sb, data);
1584 if (err)
1585 goto restore_opts;
4354994f
DR		 1586 checkpoint_changed =
1587 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1588
1589 /*
1590 * Previous and new state of filesystem is RO,
876dc59e 1591 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1592 */
1751e8a6 1593 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1594 goto skip;
1595
ea676733 1596#ifdef CONFIG_QUOTA
1751e8a6 1597 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1598 err = dquot_suspend(sb, -1);
1599 if (err < 0)
1600 goto restore_opts;
4354994f 1601 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1602 /* dquot_resume needs RW */
1751e8a6 1603 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1604 if (sb_any_quota_suspended(sb)) {
1605 dquot_resume(sb, -1);
7beb01f7 1606 } else if (f2fs_sb_has_quota_ino(sbi)) {
ea676733
JK		 1607 err = f2fs_enable_quotas(sb);
1608 if (err)
1609 goto restore_opts;
1610 }
0abd675e 1611 }
ea676733 1612#endif
9cd81ce3
CY		 1613 /* disallow enable/disable extent_cache dynamically */
1614 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1615 err = -EINVAL;
1616 f2fs_msg(sbi->sb, KERN_WARNING,
1617 "switch extent_cache option is not allowed");
1618 goto restore_opts;
1619 }
1620
4354994f
DR		 1621 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1622 err = -EINVAL;
1623 f2fs_msg(sbi->sb, KERN_WARNING,
1624 "disabling checkpoint not compatible with read-only");
1625 goto restore_opts;
1626 }
1627
696c018c
NJ		 1628 /*
1629 * We stop the GC thread if FS is mounted as RO
1630 * or if background_gc = off is passed in mount
1631 * option. Also sync the filesystem.
1632 */
1751e8a6 1633 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
696c018c 1634 if (sbi->gc_thread) {
4d57b86d 1635 f2fs_stop_gc_thread(sbi);
876dc59e 1636 need_restart_gc = true;
696c018c 1637 }
aba291b3 1638 } else if (!sbi->gc_thread) {
4d57b86d 1639 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1640 if (err)
1641 goto restore_opts;
876dc59e
GZ		 1642 need_stop_gc = true;
1643 }
1644
63189b78
CY		 1645 if (*flags & SB_RDONLY ||
1646 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1647 writeback_inodes_sb(sb, WB_REASON_SYNC);
1648 sync_inodes_sb(sb);
1649
1650 set_sbi_flag(sbi, SBI_IS_DIRTY);
1651 set_sbi_flag(sbi, SBI_IS_CLOSE);
1652 f2fs_sync_fs(sb, 1);
1653 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1654 }
1655
4354994f
DR		 1656 if (checkpoint_changed) {
1657 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1658 err = f2fs_disable_checkpoint(sbi);
1659 if (err)
1660 goto restore_gc;
1661 } else {
1662 f2fs_enable_checkpoint(sbi);
1663 }
1664 }
1665
876dc59e
GZ		 1666 /*
1667 * We stop issue flush thread if FS is mounted as RO
1668 * or if flush_merge is not passed in mount option.
1669 */
1751e8a6 1670 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1671 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1672 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1673 } else {
4d57b86d 1674 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1675 if (err)
a688b9d9 1676 goto restore_gc;
696c018c
NJ		 1677 }
1678skip:
4b2414d0
CY		 1679#ifdef CONFIG_QUOTA
1680 /* Release old quota file names */
1681 for (i = 0; i < MAXQUOTAS; i++)
5222595d 1682 kvfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1683#endif
696c018c 1684 /* Update the POSIXACL Flag */
1751e8a6
LT		 1685 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1686 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1687
7e65be49 1688 limit_reserve_root(sbi);
095680f2 1689 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1690 return 0;
876dc59e
GZ		 1691restore_gc:
1692 if (need_restart_gc) {
4d57b86d 1693 if (f2fs_start_gc_thread(sbi))
876dc59e 1694 f2fs_msg(sbi->sb, KERN_WARNING,
e1c42045 1695 "background gc thread has stopped");
876dc59e 1696 } else if (need_stop_gc) {
4d57b86d 1697 f2fs_stop_gc_thread(sbi);
876dc59e 1698 }
696c018c 1699restore_opts:
4b2414d0 1700#ifdef CONFIG_QUOTA
63189b78 1701 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1702 for (i = 0; i < MAXQUOTAS; i++) {
5222595d 1703 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
63189b78 1704 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1705 }
1706#endif
696c018c 1707 sbi->mount_opt = org_mount_opt;
0abd675e 1708 sb->s_flags = old_sb_flags;
696c018c
NJ		 1709 return err;
1710}
1711
0abd675e
CY		 1712#ifdef CONFIG_QUOTA
1713/* Read data from quotafile */
1714static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1715 size_t len, loff_t off)
1716{
1717 struct inode *inode = sb_dqopt(sb)->files[type];
1718 struct address_space *mapping = inode->i_mapping;
1719 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1720 int offset = off & (sb->s_blocksize - 1);
1721 int tocopy;
1722 size_t toread;
1723 loff_t i_size = i_size_read(inode);
1724 struct page *page;
1725 char *kaddr;
1726
1727 if (off > i_size)
1728 return 0;
1729
1730 if (off + len > i_size)
1731 len = i_size - off;
1732 toread = len;
1733 while (toread > 0) {
1734 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1735repeat:
02117b8a 1736 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1737 if (IS_ERR(page)) {
1738 if (PTR_ERR(page) == -ENOMEM) {
1739 congestion_wait(BLK_RW_ASYNC, HZ/50);
1740 goto repeat;
1741 }
af033b2a 1742 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1743 return PTR_ERR(page);
4e46a023 1744 }
0abd675e
CY		 1745
1746 lock_page(page);
1747
1748 if (unlikely(page->mapping != mapping)) {
1749 f2fs_put_page(page, 1);
1750 goto repeat;
1751 }
1752 if (unlikely(!PageUptodate(page))) {
1753 f2fs_put_page(page, 1);
af033b2a 1754 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1755 return -EIO;
1756 }
1757
1758 kaddr = kmap_atomic(page);
1759 memcpy(data, kaddr + offset, tocopy);
1760 kunmap_atomic(kaddr);
1761 f2fs_put_page(page, 1);
1762
1763 offset = 0;
1764 toread -= tocopy;
1765 data += tocopy;
1766 blkidx++;
1767 }
1768 return len;
1769}
1770
1771/* Write to quotafile */
1772static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1773 const char *data, size_t len, loff_t off)
1774{
1775 struct inode *inode = sb_dqopt(sb)->files[type];
1776 struct address_space *mapping = inode->i_mapping;
1777 const struct address_space_operations *a_ops = mapping->a_ops;
1778 int offset = off & (sb->s_blocksize - 1);
1779 size_t towrite = len;
1780 struct page *page;
1781 char *kaddr;
1782 int err = 0;
1783 int tocopy;
1784
1785 while (towrite > 0) {
1786 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1787 towrite);
4e46a023 1788retry:
0abd675e
CY		 1789 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1790 &page, NULL);
4e46a023
JK		 1791 if (unlikely(err)) {
1792 if (err == -ENOMEM) {
1793 congestion_wait(BLK_RW_ASYNC, HZ/50);
1794 goto retry;
1795 }
af033b2a 1796 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e 1797 break;
4e46a023 1798 }
0abd675e
CY		 1799
1800 kaddr = kmap_atomic(page);
1801 memcpy(kaddr + offset, data, tocopy);
1802 kunmap_atomic(kaddr);
1803 flush_dcache_page(page);
1804
1805 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1806 page, NULL);
1807 offset = 0;
1808 towrite -= tocopy;
1809 off += tocopy;
1810 data += tocopy;
1811 cond_resched();
1812 }
1813
1814 if (len == towrite)
6e5b5d41 1815 return err;
0abd675e
CY		 1816 inode->i_mtime = inode->i_ctime = current_time(inode);
1817 f2fs_mark_inode_dirty_sync(inode, false);
1818 return len - towrite;
1819}
1820
1821static struct dquot **f2fs_get_dquots(struct inode *inode)
1822{
1823 return F2FS_I(inode)->i_dquot;
1824}
1825
1826static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1827{
1828 return &F2FS_I(inode)->i_reserved_quota;
1829}
1830
4b2414d0
CY		 1831static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1832{
af033b2a
CY		 1833 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
1834 f2fs_msg(sbi->sb, KERN_ERR,
1835 "quota sysfile may be corrupted, skip loading it");
1836 return 0;
1837 }
1838
63189b78
CY		 1839 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1840 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1841}
1842
ea676733 1843int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1844{
ea676733
JK		 1845 int enabled = 0;
1846 int i, err;
1847
7beb01f7 1848 if (f2fs_sb_has_quota_ino(sbi) && rdonly) {
ea676733
JK		 1849 err = f2fs_enable_quotas(sbi->sb);
1850 if (err) {
1851 f2fs_msg(sbi->sb, KERN_ERR,
1852 "Cannot turn on quota_ino: %d", err);
1853 return 0;
1854 }
1855 return 1;
1856 }
4b2414d0
CY		 1857
1858 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 1859 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 1860 err = f2fs_quota_on_mount(sbi, i);
1861 if (!err) {
1862 enabled = 1;
1863 continue;
1864 }
1865 f2fs_msg(sbi->sb, KERN_ERR,
1866 "Cannot turn on quotas: %d on %d", err, i);
4b2414d0
CY		 1867 }
1868 }
ea676733
JK		 1869 return enabled;
1870}
1871
1872static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1873 unsigned int flags)
1874{
1875 struct inode *qf_inode;
1876 unsigned long qf_inum;
1877 int err;
1878
7beb01f7 1879 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb)));
ea676733
JK		 1880
1881 qf_inum = f2fs_qf_ino(sb, type);
1882 if (!qf_inum)
1883 return -EPERM;
1884
1885 qf_inode = f2fs_iget(sb, qf_inum);
1886 if (IS_ERR(qf_inode)) {
1887 f2fs_msg(sb, KERN_ERR,
1888 "Bad quota inode %u:%lu", type, qf_inum);
1889 return PTR_ERR(qf_inode);
1890 }
1891
1892 /* Don't account quota for quota files to avoid recursion */
1893 qf_inode->i_flags |= S_NOQUOTA;
1894 err = dquot_enable(qf_inode, type, format_id, flags);
1895 iput(qf_inode);
1896 return err;
1897}
1898
1899static int f2fs_enable_quotas(struct super_block *sb)
1900{
1901 int type, err = 0;
1902 unsigned long qf_inum;
1903 bool quota_mopt[MAXQUOTAS] = {
1904 test_opt(F2FS_SB(sb), USRQUOTA),
1905 test_opt(F2FS_SB(sb), GRPQUOTA),
1906 test_opt(F2FS_SB(sb), PRJQUOTA),
1907 };
1908
af033b2a
CY		 1909 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) {
1910 f2fs_msg(sb, KERN_ERR,
1911 "quota file may be corrupted, skip loading it");
1912 return 0;
1913 }
1914
1915 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1916
ea676733
JK		 1917 for (type = 0; type < MAXQUOTAS; type++) {
1918 qf_inum = f2fs_qf_ino(sb, type);
1919 if (qf_inum) {
1920 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1921 DQUOT_USAGE_ENABLED |
1922 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1923 if (err) {
1924 f2fs_msg(sb, KERN_ERR,
1925 "Failed to enable quota tracking "
1926 "(type=%d, err=%d). Please run "
1927 "fsck to fix.", type, err);
1928 for (type--; type >= 0; type--)
1929 dquot_quota_off(sb, type);
af033b2a
CY		 1930 set_sbi_flag(F2FS_SB(sb),
1931 SBI_QUOTA_NEED_REPAIR);
ea676733
JK		 1932 return err;
1933 }
4b2414d0
CY		 1934 }
1935 }
ea676733 1936 return 0;
4b2414d0
CY		 1937}
1938
af033b2a 1939int f2fs_quota_sync(struct super_block *sb, int type)
0abd675e 1940{
af033b2a 1941 struct f2fs_sb_info *sbi = F2FS_SB(sb);
0abd675e
CY		 1942 struct quota_info *dqopt = sb_dqopt(sb);
1943 int cnt;
1944 int ret;
1945
1946 ret = dquot_writeback_dquots(sb, type);
1947 if (ret)
af033b2a 1948 goto out;
0abd675e
CY		 1949
1950 /*
1951 * Now when everything is written we can discard the pagecache so
1952 * that userspace sees the changes.
1953 */
1954 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
af033b2a
CY		 1955 struct address_space *mapping;
1956
0abd675e
CY		 1957 if (type != -1 && cnt != type)
1958 continue;
1959 if (!sb_has_quota_active(sb, cnt))
1960 continue;
1961
af033b2a
CY		 1962 mapping = dqopt->files[cnt]->i_mapping;
1963
1964 ret = filemap_fdatawrite(mapping);
0abd675e 1965 if (ret)
af033b2a
CY		 1966 goto out;
1967
1968 /* if we are using journalled quota */
1969 if (is_journalled_quota(sbi))
1970 continue;
1971
1972 ret = filemap_fdatawait(mapping);
1973 if (ret)
1974 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
0abd675e
CY		 1975
1976 inode_lock(dqopt->files[cnt]);
1977 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
1978 inode_unlock(dqopt->files[cnt]);
1979 }
af033b2a
CY		 1980out:
1981 if (ret)
1982 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
1983 return ret;
0abd675e
CY		 1984}
1985
1986static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
1987 const struct path *path)
1988{
1989 struct inode *inode;
1990 int err;
1991
9a20d391 1992 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 1993 if (err)
1994 return err;
1995
1996 err = dquot_quota_on(sb, type, format_id, path);
1997 if (err)
1998 return err;
1999
2000 inode = d_inode(path->dentry);
2001
2002 inode_lock(inode);
59c84408 2003 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
9149a5eb 2004 f2fs_set_inode_flags(inode);
0abd675e
CY		 2005 inode_unlock(inode);
2006 f2fs_mark_inode_dirty_sync(inode, false);
2007
2008 return 0;
2009}
2010
2011static int f2fs_quota_off(struct super_block *sb, int type)
2012{
2013 struct inode *inode = sb_dqopt(sb)->files[type];
2014 int err;
2015
2016 if (!inode || !igrab(inode))
2017 return dquot_quota_off(sb, type);
2018
cda9cc59
YH		 2019 err = f2fs_quota_sync(sb, type);
2020 if (err)
2021 goto out_put;
0abd675e
CY		 2022
2023 err = dquot_quota_off(sb, type);
7beb01f7 2024 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb)))
0abd675e
CY		 2025 goto out_put;
2026
2027 inode_lock(inode);
59c84408 2028 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
9149a5eb 2029 f2fs_set_inode_flags(inode);
0abd675e
CY		 2030 inode_unlock(inode);
2031 f2fs_mark_inode_dirty_sync(inode, false);
2032out_put:
2033 iput(inode);
2034 return err;
2035}
2036
4b2414d0 2037void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2038{
2039 int type;
cda9cc59
YH		 2040 int err;
2041
2042 for (type = 0; type < MAXQUOTAS; type++) {
2043 err = f2fs_quota_off(sb, type);
2044 if (err) {
2045 int ret = dquot_quota_off(sb, type);
0abd675e 2046
cda9cc59
YH		 2047 f2fs_msg(sb, KERN_ERR,
2048 "Fail to turn off disk quota "
2049 "(type: %d, err: %d, ret:%d), Please "
2050 "run fsck to fix it.", type, err, ret);
af033b2a 2051 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
cda9cc59
YH		 2052 }
2053 }
0e0667b6
JK		 2054 /*
2055 * In case of checkpoint=disable, we must flush quota blocks.
2056 * This can cause NULL exception for node_inode in end_io, since
2057 * put_super already dropped it.
2058 */
2059 sync_filesystem(sb);
0abd675e
CY		 2060}
2061
26b5a079
SY		 2062static void f2fs_truncate_quota_inode_pages(struct super_block *sb)
2063{
2064 struct quota_info *dqopt = sb_dqopt(sb);
2065 int type;
2066
2067 for (type = 0; type < MAXQUOTAS; type++) {
2068 if (!dqopt->files[type])
2069 continue;
2070 f2fs_inode_synced(dqopt->files[type]);
2071 }
2072}
2073
af033b2a
CY		 2074static int f2fs_dquot_commit(struct dquot *dquot)
2075{
2076 int ret;
2077
2078 ret = dquot_commit(dquot);
2079 if (ret < 0)
2080 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
2081 return ret;
2082}
2083
2084static int f2fs_dquot_acquire(struct dquot *dquot)
2085{
2086 int ret;
2087
2088 ret = dquot_acquire(dquot);
2089 if (ret < 0)
2090 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
2091
2092 return ret;
2093}
2094
2095static int f2fs_dquot_release(struct dquot *dquot)
2096{
2097 int ret;
2098
2099 ret = dquot_release(dquot);
2100 if (ret < 0)
2101 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR);
2102 return ret;
2103}
2104
2105static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot)
2106{
2107 struct super_block *sb = dquot->dq_sb;
2108 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2109 int ret;
2110
2111 ret = dquot_mark_dquot_dirty(dquot);
2112
2113 /* if we are using journalled quota */
2114 if (is_journalled_quota(sbi))
2115 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
2116
2117 return ret;
2118}
2119
2120static int f2fs_dquot_commit_info(struct super_block *sb, int type)
2121{
2122 int ret;
2123
2124 ret = dquot_commit_info(sb, type);
2125 if (ret < 0)
2126 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
2127 return ret;
2128}
26b5a079 2129
94b1e10e 2130static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 2131{
2132 *projid = F2FS_I(inode)->i_projid;
2133 return 0;
2134}
2135
0abd675e
CY		 2136static const struct dquot_operations f2fs_quota_operations = {
2137 .get_reserved_space = f2fs_get_reserved_space,
af033b2a
CY		 2138 .write_dquot = f2fs_dquot_commit,
2139 .acquire_dquot = f2fs_dquot_acquire,
2140 .release_dquot = f2fs_dquot_release,
2141 .mark_dirty = f2fs_dquot_mark_dquot_dirty,
2142 .write_info = f2fs_dquot_commit_info,
0abd675e
CY		 2143 .alloc_dquot = dquot_alloc,
2144 .destroy_dquot = dquot_destroy,
5c57132e 2145 .get_projid = f2fs_get_projid,
0abd675e
CY		 2146 .get_next_id = dquot_get_next_id,
2147};
2148
2149static const struct quotactl_ops f2fs_quotactl_ops = {
2150 .quota_on = f2fs_quota_on,
2151 .quota_off = f2fs_quota_off,
2152 .quota_sync = f2fs_quota_sync,
2153 .get_state = dquot_get_state,
2154 .set_info = dquot_set_dqinfo,
2155 .get_dqblk = dquot_get_dqblk,
2156 .set_dqblk = dquot_set_dqblk,
2157 .get_nextdqblk = dquot_get_next_dqblk,
2158};
2159#else
af033b2a
CY		 2160int f2fs_quota_sync(struct super_block *sb, int type)
2161{
2162 return 0;
2163}
2164
4b2414d0 2165void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2166{
2167}
2168#endif
2169
f62fc9f9 2170static const struct super_operations f2fs_sops = {
aff063e2 2171 .alloc_inode = f2fs_alloc_inode,
531ad7d5 2172 .drop_inode = f2fs_drop_inode,
aff063e2
JK		 2173 .destroy_inode = f2fs_destroy_inode,
2174 .write_inode = f2fs_write_inode,
b3783873 2175 .dirty_inode = f2fs_dirty_inode,
aff063e2 2176 .show_options = f2fs_show_options,
0abd675e
CY		 2177#ifdef CONFIG_QUOTA
2178 .quota_read = f2fs_quota_read,
2179 .quota_write = f2fs_quota_write,
2180 .get_dquots = f2fs_get_dquots,
2181#endif
aff063e2
JK		 2182 .evict_inode = f2fs_evict_inode,
2183 .put_super = f2fs_put_super,
2184 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2185 .freeze_fs = f2fs_freeze,
2186 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2187 .statfs = f2fs_statfs,
696c018c 2188 .remount_fs = f2fs_remount,
aff063e2
JK		 2189};
2190
0b81d077
JK		 2191#ifdef CONFIG_F2FS_FS_ENCRYPTION
2192static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2193{
2194 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2195 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2196 ctx, len, NULL);
2197}
2198
2199static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2200 void *fs_data)
2201{
b7c409de
SY		 2202 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2203
2204 /*
2205 * Encrypting the root directory is not allowed because fsck
2206 * expects lost+found directory to exist and remain unencrypted
2207 * if LOST_FOUND feature is enabled.
2208 *
2209 */
7beb01f7 2210 if (f2fs_sb_has_lost_found(sbi) &&
b7c409de
SY		 2211 inode->i_ino == F2FS_ROOT_INO(sbi))
2212 return -EPERM;
2213
0b81d077
JK		 2214 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2215 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2216 ctx, len, fs_data, XATTR_CREATE);
2217}
2218
ff62af20
SY		 2219static bool f2fs_dummy_context(struct inode *inode)
2220{
2221 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2222}
2223
6f69f0ed 2224static const struct fscrypt_operations f2fs_cryptops = {
a5d431ef 2225 .key_prefix = "f2fs:",
0b81d077
JK		 2226 .get_context = f2fs_get_context,
2227 .set_context = f2fs_set_context,
ff62af20 2228 .dummy_context = f2fs_dummy_context,
0b81d077 2229 .empty_dir = f2fs_empty_dir,
e12ee683 2230 .max_namelen = F2FS_NAME_LEN,
0b81d077 2231};
0b81d077
JK		 2232#endif
2233
aff063e2
JK		 2234static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2235 u64 ino, u32 generation)
2236{
2237 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2238 struct inode *inode;
2239
4d57b86d 2240 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2241 return ERR_PTR(-ESTALE);
aff063e2
JK		 2242
2243 /*
2244 * f2fs_iget isn't quite right if the inode is currently unallocated!
2245 * However f2fs_iget currently does appropriate checks to handle stale
2246 * inodes so everything is OK.
2247 */
2248 inode = f2fs_iget(sb, ino);
2249 if (IS_ERR(inode))
2250 return ERR_CAST(inode);
6bacf52f 2251 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2252 /* we didn't find the right inode.. */
2253 iput(inode);
2254 return ERR_PTR(-ESTALE);
2255 }
2256 return inode;
2257}
2258
2259static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2260 int fh_len, int fh_type)
2261{
2262 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2263 f2fs_nfs_get_inode);
2264}
2265
2266static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2267 int fh_len, int fh_type)
2268{
2269 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2270 f2fs_nfs_get_inode);
2271}
2272
2273static const struct export_operations f2fs_export_ops = {
2274 .fh_to_dentry = f2fs_fh_to_dentry,
2275 .fh_to_parent = f2fs_fh_to_parent,
2276 .get_parent = f2fs_get_parent,
2277};
2278
e0afc4d6 2279static loff_t max_file_blocks(void)
aff063e2 2280{
7a2af766 2281 loff_t result = 0;
aff063e2
JK		 2282 loff_t leaf_count = ADDRS_PER_BLOCK;
2283
7a2af766
CY		 2284 /*
2285 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2286 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2287 * space in inode.i_addr, it will be more safe to reassign
2288 * result as zero.
2289 */
2290
aff063e2
JK		 2291 /* two direct node blocks */
2292 result += (leaf_count * 2);
2293
2294 /* two indirect node blocks */
2295 leaf_count *= NIDS_PER_BLOCK;
2296 result += (leaf_count * 2);
2297
2298 /* one double indirect node block */
2299 leaf_count *= NIDS_PER_BLOCK;
2300 result += leaf_count;
2301
aff063e2
JK		 2302 return result;
2303}
2304
fd694733
JK		 2305static int __f2fs_commit_super(struct buffer_head *bh,
2306 struct f2fs_super_block *super)
2307{
2308 lock_buffer(bh);
2309 if (super)
2310 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2311 set_buffer_dirty(bh);
2312 unlock_buffer(bh);
2313
2314 /* it's rare case, we can do fua all the time */
3adc5fcb 2315 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2316}
2317
df728b0f 2318static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2319 struct buffer_head *bh)
9a59b62f 2320{
fd694733
JK		 2321 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2322 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2323 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2324 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2325 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2326 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2327 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2328 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2329 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2330 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2331 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2332 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2333 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2334 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2335 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2336 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2337 u64 main_end_blkaddr = main_blkaddr +
2338 (segment_count_main << log_blocks_per_seg);
2339 u64 seg_end_blkaddr = segment0_blkaddr +
2340 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2341
2342 if (segment0_blkaddr != cp_blkaddr) {
2343 f2fs_msg(sb, KERN_INFO,
2344 "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2345 segment0_blkaddr, cp_blkaddr);
2346 return true;
2347 }
2348
2349 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2350 sit_blkaddr) {
2351 f2fs_msg(sb, KERN_INFO,
2352 "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2353 cp_blkaddr, sit_blkaddr,
2354 segment_count_ckpt << log_blocks_per_seg);
2355 return true;
2356 }
2357
2358 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2359 nat_blkaddr) {
2360 f2fs_msg(sb, KERN_INFO,
2361 "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2362 sit_blkaddr, nat_blkaddr,
2363 segment_count_sit << log_blocks_per_seg);
2364 return true;
2365 }
2366
2367 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2368 ssa_blkaddr) {
2369 f2fs_msg(sb, KERN_INFO,
2370 "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2371 nat_blkaddr, ssa_blkaddr,
2372 segment_count_nat << log_blocks_per_seg);
2373 return true;
2374 }
2375
2376 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2377 main_blkaddr) {
2378 f2fs_msg(sb, KERN_INFO,
2379 "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2380 ssa_blkaddr, main_blkaddr,
2381 segment_count_ssa << log_blocks_per_seg);
2382 return true;
2383 }
2384
fd694733 2385 if (main_end_blkaddr > seg_end_blkaddr) {
9a59b62f 2386 f2fs_msg(sb, KERN_INFO,
fd694733 2387 "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
9a59b62f 2388 main_blkaddr,
fd694733
JK		 2389 segment0_blkaddr +
2390 (segment_count << log_blocks_per_seg),
9a59b62f
CY		 2391 segment_count_main << log_blocks_per_seg);
2392 return true;
fd694733
JK		 2393 } else if (main_end_blkaddr < seg_end_blkaddr) {
2394 int err = 0;
2395 char *res;
2396
2397 /* fix in-memory information all the time */
2398 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2399 segment0_blkaddr) >> log_blocks_per_seg);
2400
2401 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2402 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2403 res = "internally";
2404 } else {
2405 err = __f2fs_commit_super(bh, NULL);
2406 res = err ? "failed" : "done";
2407 }
2408 f2fs_msg(sb, KERN_INFO,
2409 "Fix alignment : %s, start(%u) end(%u) block(%u)",
2410 res, main_blkaddr,
2411 segment0_blkaddr +
2412 (segment_count << log_blocks_per_seg),
2413 segment_count_main << log_blocks_per_seg);
2414 if (err)
2415 return true;
9a59b62f 2416 }
9a59b62f
CY		 2417 return false;
2418}
2419
df728b0f 2420static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2421 struct buffer_head *bh)
aff063e2 2422{
0cfe75c5
JK		 2423 block_t segment_count, segs_per_sec, secs_per_zone;
2424 block_t total_sections, blocks_per_seg;
fd694733
JK		 2425 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2426 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2427 struct super_block *sb = sbi->sb;
aff063e2 2428 unsigned int blocksize;
d440c52d
JZ		 2429 size_t crc_offset = 0;
2430 __u32 crc = 0;
2431
2432 /* Check checksum_offset and crc in superblock */
7beb01f7 2433 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) {
d440c52d
JZ		 2434 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2435 if (crc_offset !=
2436 offsetof(struct f2fs_super_block, crc)) {
2437 f2fs_msg(sb, KERN_INFO,
2438 "Invalid SB checksum offset: %zu",
2439 crc_offset);
2440 return 1;
2441 }
2442 crc = le32_to_cpu(raw_super->crc);
2443 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
2444 f2fs_msg(sb, KERN_INFO,
2445 "Invalid SB checksum value: %u", crc);
2446 return 1;
2447 }
2448 }
aff063e2 2449
a07ef784
NJ		 2450 if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) {
2451 f2fs_msg(sb, KERN_INFO,
2452 "Magic Mismatch, valid(0x%x) - read(0x%x)",
2453 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
aff063e2 2454 return 1;
a07ef784 2455 }
aff063e2 2456
5c9b4692 2457 /* Currently, support only 4KB page cache size */
09cbfeaf 2458 if (F2FS_BLKSIZE != PAGE_SIZE) {
5c9b4692 2459 f2fs_msg(sb, KERN_INFO,
14d7e9de 2460 "Invalid page_cache_size (%lu), supports only 4KB\n",
09cbfeaf 2461 PAGE_SIZE);
5c9b4692 2462 return 1;
2463 }
2464
aff063e2
JK		 2465 /* Currently, support only 4KB block size */
2466 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2467 if (blocksize != F2FS_BLKSIZE) {
a07ef784
NJ		 2468 f2fs_msg(sb, KERN_INFO,
2469 "Invalid blocksize (%u), supports only 4KB\n",
2470 blocksize);
aff063e2 2471 return 1;
a07ef784 2472 }
5c9b4692 2473
9a59b62f
CY		 2474 /* check log blocks per segment */
2475 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
2476 f2fs_msg(sb, KERN_INFO,
2477 "Invalid log blocks per segment (%u)\n",
2478 le32_to_cpu(raw_super->log_blocks_per_seg));
2479 return 1;
2480 }
2481
55cf9cb6
CY		 2482 /* Currently, support 512/1024/2048/4096 bytes sector size */
2483 if (le32_to_cpu(raw_super->log_sectorsize) >
2484 F2FS_MAX_LOG_SECTOR_SIZE ||
2485 le32_to_cpu(raw_super->log_sectorsize) <
2486 F2FS_MIN_LOG_SECTOR_SIZE) {
2487 f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)",
2488 le32_to_cpu(raw_super->log_sectorsize));
aff063e2 2489 return 1;
a07ef784 2490 }
55cf9cb6
CY		 2491 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2492 le32_to_cpu(raw_super->log_sectorsize) !=
2493 F2FS_MAX_LOG_SECTOR_SIZE) {
2494 f2fs_msg(sb, KERN_INFO,
2495 "Invalid log sectors per block(%u) log sectorsize(%u)",
2496 le32_to_cpu(raw_super->log_sectors_per_block),
2497 le32_to_cpu(raw_super->log_sectorsize));
aff063e2 2498 return 1;
a07ef784 2499 }
9a59b62f 2500
0cfe75c5
JK		 2501 segment_count = le32_to_cpu(raw_super->segment_count);
2502 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2503 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2504 total_sections = le32_to_cpu(raw_super->section_count);
2505
2506 /* blocks_per_seg should be 512, given the above check */
2507 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2508
2509 if (segment_count > F2FS_MAX_SEGMENT ||
2510 segment_count < F2FS_MIN_SEGMENTS) {
2511 f2fs_msg(sb, KERN_INFO,
2512 "Invalid segment count (%u)",
2513 segment_count);
2514 return 1;
2515 }
2516
2517 if (total_sections > segment_count ||
2518 total_sections < F2FS_MIN_SEGMENTS ||
2519 segs_per_sec > segment_count || !segs_per_sec) {
2520 f2fs_msg(sb, KERN_INFO,
2521 "Invalid segment/section count (%u, %u x %u)",
2522 segment_count, total_sections, segs_per_sec);
2523 return 1;
2524 }
2525
2526 if ((segment_count / segs_per_sec) < total_sections) {
2527 f2fs_msg(sb, KERN_INFO,
2528 "Small segment_count (%u < %u * %u)",
2529 segment_count, segs_per_sec, total_sections);
2530 return 1;
2531 }
2532
88960068 2533 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) {
0cfe75c5 2534 f2fs_msg(sb, KERN_INFO,
88960068
MB		 2535 "Wrong segment_count / block_count (%u > %llu)",
2536 segment_count, le64_to_cpu(raw_super->block_count));
0cfe75c5
JK		 2537 return 1;
2538 }
2539
42bf546c 2540 if (secs_per_zone > total_sections || !secs_per_zone) {
0cfe75c5 2541 f2fs_msg(sb, KERN_INFO,
42bf546c 2542 "Wrong secs_per_zone / total_sections (%u, %u)",
0cfe75c5
JK		 2543 secs_per_zone, total_sections);
2544 return 1;
2545 }
2546 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2547 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2548 (le32_to_cpu(raw_super->extension_count) +
2549 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
2550 f2fs_msg(sb, KERN_INFO,
2551 "Corrupted extension count (%u + %u > %u)",
2552 le32_to_cpu(raw_super->extension_count),
2553 raw_super->hot_ext_count,
2554 F2FS_MAX_EXTENSION);
2555 return 1;
2556 }
2557
2558 if (le32_to_cpu(raw_super->cp_payload) >
2559 (blocks_per_seg - F2FS_CP_PACKS)) {
2560 f2fs_msg(sb, KERN_INFO,
2561 "Insane cp_payload (%u > %u)",
2562 le32_to_cpu(raw_super->cp_payload),
2563 blocks_per_seg - F2FS_CP_PACKS);
2564 return 1;
2565 }
2566
9a59b62f
CY		 2567 /* check reserved ino info */
2568 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2569 le32_to_cpu(raw_super->meta_ino) != 2 ||
2570 le32_to_cpu(raw_super->root_ino) != 3) {
2571 f2fs_msg(sb, KERN_INFO,
2572 "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2573 le32_to_cpu(raw_super->node_ino),
2574 le32_to_cpu(raw_super->meta_ino),
2575 le32_to_cpu(raw_super->root_ino));
2576 return 1;
2577 }
2578
2579 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2580 if (sanity_check_area_boundary(sbi, bh))
9a59b62f
CY		 2581 return 1;
2582
aff063e2
JK		 2583 return 0;
2584}
2585
4d57b86d 2586int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2587{
2588 unsigned int total, fsmeta;
577e3495
JK		 2589 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2590 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2591 unsigned int ovp_segments, reserved_segments;
15d3042a 2592 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2593 unsigned int sit_segs, nat_segs;
2594 unsigned int sit_bitmap_size, nat_bitmap_size;
2595 unsigned int log_blocks_per_seg;
9dc956b2 2596 unsigned int segment_count_main;
e494c2f9 2597 unsigned int cp_pack_start_sum, cp_payload;
9dc956b2 2598 block_t user_block_count;
042be0f8 2599 int i, j;
aff063e2
JK		 2600
2601 total = le32_to_cpu(raw_super->segment_count);
2602 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2603 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2604 fsmeta += sit_segs;
2605 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2606 fsmeta += nat_segs;
aff063e2
JK		 2607 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2608 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2609
6bacf52f 2610 if (unlikely(fsmeta >= total))
aff063e2 2611 return 1;
577e3495 2612
2040fce8
JK		 2613 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2614 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2615
2616 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2617 ovp_segments == 0 || reserved_segments == 0)) {
2618 f2fs_msg(sbi->sb, KERN_ERR,
2619 "Wrong layout: check mkfs.f2fs version");
2620 return 1;
2621 }
2622
9dc956b2
CY		 2623 user_block_count = le64_to_cpu(ckpt->user_block_count);
2624 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2625 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2626 if (!user_block_count || user_block_count >=
2627 segment_count_main << log_blocks_per_seg) {
2628 f2fs_msg(sbi->sb, KERN_ERR,
2629 "Wrong user_block_count: %u", user_block_count);
2630 return 1;
2631 }
2632
15d3042a
JQ		 2633 main_segs = le32_to_cpu(raw_super->segment_count_main);
2634 blocks_per_seg = sbi->blocks_per_seg;
2635
2636 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2637 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2638 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2639 return 1;
042be0f8
CY		 2640 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2641 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2642 le32_to_cpu(ckpt->cur_node_segno[j])) {
2643 f2fs_msg(sbi->sb, KERN_ERR,
2644 "Node segment (%u, %u) has the same "
2645 "segno: %u", i, j,
2646 le32_to_cpu(ckpt->cur_node_segno[i]));
2647 return 1;
2648 }
2649 }
15d3042a
JQ		 2650 }
2651 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2652 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2653 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2654 return 1;
042be0f8
CY		 2655 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2656 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2657 le32_to_cpu(ckpt->cur_data_segno[j])) {
2658 f2fs_msg(sbi->sb, KERN_ERR,
2659 "Data segment (%u, %u) has the same "
2660 "segno: %u", i, j,
2661 le32_to_cpu(ckpt->cur_data_segno[i]));
2662 return 1;
2663 }
2664 }
2665 }
2666 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2667 for (j = i; j < NR_CURSEG_DATA_TYPE; j++) {
2668 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2669 le32_to_cpu(ckpt->cur_data_segno[j])) {
2670 f2fs_msg(sbi->sb, KERN_ERR,
2671 "Data segment (%u) and Data segment (%u)"
2672 " has the same segno: %u", i, j,
2673 le32_to_cpu(ckpt->cur_node_segno[i]));
2674 return 1;
2675 }
2676 }
15d3042a
JQ		 2677 }
2678
c77ec61c
CY		 2679 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2680 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2681
2682 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2683 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
2684 f2fs_msg(sbi->sb, KERN_ERR,
2685 "Wrong bitmap size: sit: %u, nat:%u",
2686 sit_bitmap_size, nat_bitmap_size);
2687 return 1;
2688 }
e494c2f9
CY		 2689
2690 cp_pack_start_sum = __start_sum_addr(sbi);
2691 cp_payload = __cp_payload(sbi);
2692 if (cp_pack_start_sum < cp_payload + 1 ||
2693 cp_pack_start_sum > blocks_per_seg - 1 -
2694 NR_CURSEG_TYPE) {
2695 f2fs_msg(sbi->sb, KERN_ERR,
2696 "Wrong cp_pack_start_sum: %u",
2697 cp_pack_start_sum);
2698 return 1;
2699 }
c77ec61c 2700
1e968fdf 2701 if (unlikely(f2fs_cp_error(sbi))) {
577e3495
JK		 2702 f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck");
2703 return 1;
2704 }
aff063e2
JK		 2705 return 0;
2706}
2707
2708static void init_sb_info(struct f2fs_sb_info *sbi)
2709{
2710 struct f2fs_super_block *raw_super = sbi->raw_super;
089842de 2711 int i;
aff063e2
JK		 2712
2713 sbi->log_sectors_per_block =
2714 le32_to_cpu(raw_super->log_sectors_per_block);
2715 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2716 sbi->blocksize = 1 << sbi->log_blocksize;
2717 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2718 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2719 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2720 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2721 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2722 sbi->total_node_count =
2723 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2724 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2725 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2726 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2727 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2728 sbi->cur_victim_sec = NULL_SECNO;
e3080b01
CY		 2729 sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
2730 sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
b1c57c1c 2731 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
e3080b01 2732 sbi->migration_granularity = sbi->segs_per_sec;
aff063e2 2733
ab9fa662 2734 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2735 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2736 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2737 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2738 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2739 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
03f2c02d
JK		 2740 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] =
2741 DEF_UMOUNT_DISCARD_TIMEOUT;
caf0047e 2742 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2743
35782b23
JK		 2744 for (i = 0; i < NR_COUNT_TYPE; i++)
2745 atomic_set(&sbi->nr_pages[i], 0);
2746
c29fd0c0
CY		 2747 for (i = 0; i < META; i++)
2748 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2749
2658e50d
JK		 2750 INIT_LIST_HEAD(&sbi->s_list);
2751 mutex_init(&sbi->umount_mutex);
107a805d 2752 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2753 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2754
2755 sbi->dirty_device = 0;
2756 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2757
846ae671 2758 init_rwsem(&sbi->sb_lock);
aff063e2
JK		 2759}
2760
523be8a6
JK		 2761static int init_percpu_info(struct f2fs_sb_info *sbi)
2762{
35782b23 2763 int err;
41382ec4 2764
513c5f37
JK		 2765 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2766 if (err)
2767 return err;
2768
4a70e255 2769 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2770 GFP_KERNEL);
4a70e255
CY		 2771 if (err)
2772 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2773
2774 return err;
523be8a6
JK		 2775}
2776
178053e2 2777#ifdef CONFIG_BLK_DEV_ZONED
3c62be17 2778static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2779{
3c62be17 2780 struct block_device *bdev = FDEV(devi).bdev;
178053e2
DLM		 2781 sector_t nr_sectors = bdev->bd_part->nr_sects;
2782 sector_t sector = 0;
2783 struct blk_zone *zones;
2784 unsigned int i, nr_zones;
2785 unsigned int n = 0;
2786 int err = -EIO;
2787
7beb01f7 2788 if (!f2fs_sb_has_blkzoned(sbi))
178053e2
DLM		 2789 return 0;
2790
3c62be17 2791 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 2792 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 2793 return -EINVAL;
f99e8648 2794 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 2795 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2796 __ilog2_u32(sbi->blocks_per_blkz))
2797 return -EINVAL;
178053e2 2798 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 2799 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2800 sbi->log_blocks_per_blkz;
f99e8648 2801 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 2802 FDEV(devi).nr_blkz++;
178053e2 2803
4e6aad29
CY		 2804 FDEV(devi).blkz_type = f2fs_kmalloc(sbi, FDEV(devi).nr_blkz,
2805 GFP_KERNEL);
3c62be17 2806 if (!FDEV(devi).blkz_type)
178053e2
DLM		 2807 return -ENOMEM;
2808
2809#define F2FS_REPORT_NR_ZONES 4096
2810
026f0507
KC		 2811 zones = f2fs_kzalloc(sbi,
2812 array_size(F2FS_REPORT_NR_ZONES,
2813 sizeof(struct blk_zone)),
2814 GFP_KERNEL);
178053e2
DLM		 2815 if (!zones)
2816 return -ENOMEM;
2817
2818 /* Get block zones type */
2819 while (zones && sector < nr_sectors) {
2820
2821 nr_zones = F2FS_REPORT_NR_ZONES;
2822 err = blkdev_report_zones(bdev, sector,
2823 zones, &nr_zones,
2824 GFP_KERNEL);
2825 if (err)
2826 break;
2827 if (!nr_zones) {
2828 err = -EIO;
2829 break;
2830 }
2831
2832 for (i = 0; i < nr_zones; i++) {
3c62be17 2833 FDEV(devi).blkz_type[n] = zones[i].type;
178053e2
DLM		 2834 sector += zones[i].len;
2835 n++;
2836 }
2837 }
2838
5222595d 2839 kvfree(zones);
178053e2
DLM		 2840
2841 return err;
2842}
2843#endif
2844
9076a75f
GZ		 2845/*
2846 * Read f2fs raw super block.
2b39e907
SL		 2847 * Because we have two copies of super block, so read both of them
2848 * to get the first valid one. If any one of them is broken, we pass
2849 * them recovery flag back to the caller.
9076a75f 2850 */
df728b0f 2851static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 2852 struct f2fs_super_block **raw_super,
e8240f65 2853 int *valid_super_block, int *recovery)
14d7e9de 2854{
df728b0f 2855 struct super_block *sb = sbi->sb;
2b39e907 2856 int block;
e8240f65 2857 struct buffer_head *bh;
fd694733 2858 struct f2fs_super_block *super;
da554e48 2859 int err = 0;
14d7e9de 2860
b39f0de2
YH		 2861 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2862 if (!super)
2863 return -ENOMEM;
2b39e907
SL		 2864
2865 for (block = 0; block < 2; block++) {
2866 bh = sb_bread(sb, block);
2867 if (!bh) {
2868 f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock",
9076a75f 2869 block + 1);
2b39e907
SL		 2870 err = -EIO;
2871 continue;
2872 }
14d7e9de 2873
2b39e907 2874 /* sanity checking of raw super */
df728b0f 2875 if (sanity_check_raw_super(sbi, bh)) {
2b39e907
SL		 2876 f2fs_msg(sb, KERN_ERR,
2877 "Can't find valid F2FS filesystem in %dth superblock",
2878 block + 1);
2879 err = -EINVAL;
2880 brelse(bh);
2881 continue;
2882 }
14d7e9de 2883
2b39e907 2884 if (!*raw_super) {
fd694733
JK		 2885 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2886 sizeof(*super));
2b39e907
SL		 2887 *valid_super_block = block;
2888 *raw_super = super;
2889 }
2890 brelse(bh);
da554e48 2891 }
2892
2b39e907
SL		 2893 /* Fail to read any one of the superblocks*/
2894 if (err < 0)
2895 *recovery = 1;
da554e48 2896
da554e48 2897 /* No valid superblock */
2b39e907 2898 if (!*raw_super)
5222595d 2899 kvfree(super);
2b39e907
SL		 2900 else
2901 err = 0;
da554e48 2902
2b39e907 2903 return err;
14d7e9de 2904}
2905
fd694733 2906int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 2907{
5d909cdb 2908 struct buffer_head *bh;
d440c52d 2909 __u32 crc = 0;
26d815ad
JK		 2910 int err;
2911
df728b0f
JK		 2912 if ((recover && f2fs_readonly(sbi->sb)) ||
2913 bdev_read_only(sbi->sb->s_bdev)) {
2914 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 2915 return -EROFS;
df728b0f 2916 }
f2353d7b 2917
d440c52d 2918 /* we should update superblock crc here */
7beb01f7 2919 if (!recover && f2fs_sb_has_sb_chksum(sbi)) {
d440c52d
JZ		 2920 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
2921 offsetof(struct f2fs_super_block, crc));
2922 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
2923 }
2924
fd694733 2925 /* write back-up superblock first */
0964fc1a 2926 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 2927 if (!bh)
2928 return -EIO;
fd694733 2929 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 2930 brelse(bh);
c5bda1c8
CY		 2931
2932 /* if we are in recovery path, skip writing valid superblock */
2933 if (recover || err)
5d909cdb 2934 return err;
26d815ad
JK		 2935
2936 /* write current valid superblock */
0964fc1a 2937 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 2938 if (!bh)
2939 return -EIO;
2940 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2941 brelse(bh);
2942 return err;
26d815ad
JK		 2943}
2944
3c62be17
JK		 2945static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
2946{
2947 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 2948 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 2949 int i;
2950
7bb3a371
MS		 2951 /* Initialize single device information */
2952 if (!RDEV(0).path[0]) {
2953 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 2954 return 0;
7bb3a371
MS		 2955 max_devices = 1;
2956 }
3c62be17 2957
7bb3a371
MS		 2958 /*
2959 * Initialize multiple devices information, or single
2960 * zoned block device information.
2961 */
026f0507
KC		 2962 sbi->devs = f2fs_kzalloc(sbi,
2963 array_size(max_devices,
2964 sizeof(struct f2fs_dev_info)),
2965 GFP_KERNEL);
7bb3a371
MS		 2966 if (!sbi->devs)
2967 return -ENOMEM;
3c62be17 2968
7bb3a371 2969 for (i = 0; i < max_devices; i++) {
3c62be17 2970
7bb3a371
MS		 2971 if (i > 0 && !RDEV(i).path[0])
2972 break;
2973
2974 if (max_devices == 1) {
2975 /* Single zoned block device mount */
2976 FDEV(0).bdev =
2977 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 2978 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 2979 } else {
2980 /* Multi-device mount */
2981 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
2982 FDEV(i).total_segments =
2983 le32_to_cpu(RDEV(i).total_segments);
2984 if (i == 0) {
2985 FDEV(i).start_blk = 0;
2986 FDEV(i).end_blk = FDEV(i).start_blk +
2987 (FDEV(i).total_segments <<
2988 sbi->log_blocks_per_seg) - 1 +
2989 le32_to_cpu(raw_super->segment0_blkaddr);
2990 } else {
2991 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
2992 FDEV(i).end_blk = FDEV(i).start_blk +
2993 (FDEV(i).total_segments <<
2994 sbi->log_blocks_per_seg) - 1;
2995 }
2996 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 2997 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 2998 }
3c62be17
JK		 2999 if (IS_ERR(FDEV(i).bdev))
3000 return PTR_ERR(FDEV(i).bdev);
3001
3002 /* to release errored devices */
3003 sbi->s_ndevs = i + 1;
3004
3005#ifdef CONFIG_BLK_DEV_ZONED
3006 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
7beb01f7 3007 !f2fs_sb_has_blkzoned(sbi)) {
3c62be17
JK		 3008 f2fs_msg(sbi->sb, KERN_ERR,
3009 "Zoned block device feature not enabled\n");
3010 return -EINVAL;
3011 }
3012 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
3013 if (init_blkz_info(sbi, i)) {
3014 f2fs_msg(sbi->sb, KERN_ERR,
3015 "Failed to initialize F2FS blkzone information");
3016 return -EINVAL;
3017 }
7bb3a371
MS		 3018 if (max_devices == 1)
3019 break;
3c62be17
JK		 3020 f2fs_msg(sbi->sb, KERN_INFO,
3021 "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
3022 i, FDEV(i).path,
3023 FDEV(i).total_segments,
3024 FDEV(i).start_blk, FDEV(i).end_blk,
3025 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
3026 "Host-aware" : "Host-managed");
3027 continue;
3028 }
3029#endif
3030 f2fs_msg(sbi->sb, KERN_INFO,
3031 "Mount Device [%2d]: %20s, %8u, %8x - %8x",
3032 i, FDEV(i).path,
3033 FDEV(i).total_segments,
3034 FDEV(i).start_blk, FDEV(i).end_blk);
3035 }
0a595eba
JK		 3036 f2fs_msg(sbi->sb, KERN_INFO,
3037 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 3038 return 0;
3039}
3040
84b89e5d
JK		 3041static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
3042{
3043 struct f2fs_sm_info *sm_i = SM_I(sbi);
3044
3045 /* adjust parameters according to the volume size */
3046 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 3047 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 3048 sm_i->dcc_info->discard_granularity = 1;
3049 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
3050 }
4cac90d5
CY		 3051
3052 sbi->readdir_ra = 1;
84b89e5d
JK		 3053}
3054
aff063e2
JK		 3055static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
3056{
3057 struct f2fs_sb_info *sbi;
da554e48 3058 struct f2fs_super_block *raw_super;
aff063e2 3059 struct inode *root;
99e3e858 3060 int err;
aa2c8c43 3061 bool skip_recovery = false, need_fsck = false;
dabc4a5c 3062 char *options = NULL;
e8240f65 3063 int recovery, i, valid_super_block;
8f1dbbbb 3064 struct curseg_info *seg_i;
aa2c8c43 3065 int retry_cnt = 1;
aff063e2 3066
ed2e621a 3067try_onemore:
da554e48 3068 err = -EINVAL;
3069 raw_super = NULL;
e8240f65 3070 valid_super_block = -1;
da554e48 3071 recovery = 0;
3072
aff063e2
JK		 3073 /* allocate memory for f2fs-specific super block info */
3074 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
3075 if (!sbi)
3076 return -ENOMEM;
3077
df728b0f
JK		 3078 sbi->sb = sb;
3079
43b6573b
KM		 3080 /* Load the checksum driver */
3081 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
3082 if (IS_ERR(sbi->s_chksum_driver)) {
3083 f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver.");
3084 err = PTR_ERR(sbi->s_chksum_driver);
3085 sbi->s_chksum_driver = NULL;
3086 goto free_sbi;
3087 }
3088
ff9234ad 3089 /* set a block size */
6bacf52f 3090 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
a07ef784 3091 f2fs_msg(sb, KERN_ERR, "unable to set blocksize");
aff063e2 3092 goto free_sbi;
a07ef784 3093 }
aff063e2 3094
df728b0f 3095 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 3096 &recovery);
9076a75f
GZ		 3097 if (err)
3098 goto free_sbi;
3099
5fb08372 3100 sb->s_fs_info = sbi;
52763a4b
JK		 3101 sbi->raw_super = raw_super;
3102
704956ec 3103 /* precompute checksum seed for metadata */
7beb01f7 3104 if (f2fs_sb_has_inode_chksum(sbi))
704956ec
CY		 3105 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
3106 sizeof(raw_super->uuid));
3107
d1b959c8
DLM		 3108 /*
3109 * The BLKZONED feature indicates that the drive was formatted with
3110 * zone alignment optimization. This is optional for host-aware
3111 * devices, but mandatory for host-managed zoned block devices.
3112 */
3113#ifndef CONFIG_BLK_DEV_ZONED
7beb01f7 3114 if (f2fs_sb_has_blkzoned(sbi)) {
d1b959c8
DLM		 3115 f2fs_msg(sb, KERN_ERR,
3116 "Zoned block device support is not enabled\n");
1727f317 3117 err = -EOPNOTSUPP;
d1b959c8
DLM		 3118 goto free_sb_buf;
3119 }
d1b959c8 3120#endif
498c5e9f 3121 default_options(sbi);
aff063e2 3122 /* parse mount options */
dabc4a5c
JK		 3123 options = kstrdup((const char *)data, GFP_KERNEL);
3124 if (data && !options) {
3125 err = -ENOMEM;
aff063e2 3126 goto free_sb_buf;
dabc4a5c
JK		 3127 }
3128
3129 err = parse_options(sb, options);
3130 if (err)
3131 goto free_options;
aff063e2 3132
e0afc4d6
CY		 3133 sbi->max_file_blocks = max_file_blocks();
3134 sb->s_maxbytes = sbi->max_file_blocks <<
3135 le32_to_cpu(raw_super->log_blocksize);
aff063e2 3136 sb->s_max_links = F2FS_LINK_MAX;
aff063e2 3137
0abd675e
CY		 3138#ifdef CONFIG_QUOTA
3139 sb->dq_op = &f2fs_quota_operations;
7beb01f7 3140 if (f2fs_sb_has_quota_ino(sbi))
ea676733
JK		 3141 sb->s_qcop = &dquot_quotactl_sysfile_ops;
3142 else
3143 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3144 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a 3145
7beb01f7 3146 if (f2fs_sb_has_quota_ino(sbi)) {
292c196a
CY		 3147 for (i = 0; i < MAXQUOTAS; i++) {
3148 if (f2fs_qf_ino(sbi->sb, i))
3149 sbi->nquota_files++;
3150 }
3151 }
0abd675e
CY		 3152#endif
3153
aff063e2 3154 sb->s_op = &f2fs_sops;
ffcc4182 3155#ifdef CONFIG_F2FS_FS_ENCRYPTION
0b81d077 3156 sb->s_cop = &f2fs_cryptops;
ffcc4182 3157#endif
aff063e2
JK		 3158 sb->s_xattr = f2fs_xattr_handlers;
3159 sb->s_export_op = &f2fs_export_ops;
3160 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3161 sb->s_time_gran = 1;
1751e8a6
LT		 3162 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3163 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3164 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3165 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3166
3167 /* init f2fs-specific super block info */
e8240f65 3168 sbi->valid_super_block = valid_super_block;
aff063e2 3169 mutex_init(&sbi->gc_mutex);
853137ce 3170 mutex_init(&sbi->writepages);
aff063e2 3171 mutex_init(&sbi->cp_mutex);
b3582c68 3172 init_rwsem(&sbi->node_write);
59c9081b 3173 init_rwsem(&sbi->node_change);
315df839
JK		 3174
3175 /* disallow all the data/node/meta page writes */
3176 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3177 spin_lock_init(&sbi->stat_lock);
971767ca 3178
b0af6d49
CY		 3179 /* init iostat info */
3180 spin_lock_init(&sbi->iostat_lock);
3181 sbi->iostat_enable = false;
3182
458e6197 3183 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3184 int n = (i == META) ? 1: NR_TEMP_TYPE;
3185 int j;
3186
c8606593
KC		 3187 sbi->write_io[i] =
3188 f2fs_kmalloc(sbi,
3189 array_size(n,
3190 sizeof(struct f2fs_bio_info)),
3191 GFP_KERNEL);
b63def91
CJ		 3192 if (!sbi->write_io[i]) {
3193 err = -ENOMEM;
0b2103e8 3194 goto free_bio_info;
b63def91 3195 }
a912b54d
JK		 3196
3197 for (j = HOT; j < n; j++) {
3198 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3199 sbi->write_io[i][j].sbi = sbi;
3200 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3201 spin_lock_init(&sbi->write_io[i][j].io_lock);
3202 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
a912b54d 3203 }
458e6197 3204 }
971767ca 3205
b873b798 3206 init_rwsem(&sbi->cp_rwsem);
fb51b5ef 3207 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3208 init_sb_info(sbi);
3209
523be8a6
JK		 3210 err = init_percpu_info(sbi);
3211 if (err)
d7997e63 3212 goto free_bio_info;
523be8a6 3213
0a595eba
JK		 3214 if (F2FS_IO_SIZE(sbi) > 1) {
3215 sbi->write_io_dummy =
a3ebfe4f 3216 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3217 if (!sbi->write_io_dummy) {
3218 err = -ENOMEM;
d7997e63 3219 goto free_percpu;
1727f317 3220 }
0a595eba
JK		 3221 }
3222
aff063e2
JK		 3223 /* get an inode for meta space */
3224 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3225 if (IS_ERR(sbi->meta_inode)) {
a07ef784 3226 f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode");
aff063e2 3227 err = PTR_ERR(sbi->meta_inode);
0a595eba 3228 goto free_io_dummy;
aff063e2
JK		 3229 }
3230
4d57b86d 3231 err = f2fs_get_valid_checkpoint(sbi);
a07ef784
NJ		 3232 if (err) {
3233 f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint");
aff063e2 3234 goto free_meta_inode;
a07ef784 3235 }
aff063e2 3236
af033b2a
CY		 3237 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG))
3238 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
db610a64
JK		 3239 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) {
3240 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
3241 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
3242 }
af033b2a 3243
3c62be17
JK		 3244 /* Initialize device list */
3245 err = f2fs_scan_devices(sbi);
3246 if (err) {
3247 f2fs_msg(sb, KERN_ERR, "Failed to find devices");
3248 goto free_devices;
3249 }
3250
aff063e2
JK		 3251 sbi->total_valid_node_count =
3252 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3253 percpu_counter_set(&sbi->total_valid_inode_count,
3254 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3255 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3256 sbi->total_valid_block_count =
3257 le64_to_cpu(sbi->ckpt->valid_block_count);
3258 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3259 sbi->reserved_blocks = 0;
80d42145 3260 sbi->current_reserved_blocks = 0;
7e65be49 3261 limit_reserve_root(sbi);
41382ec4 3262
c227f912
CY		 3263 for (i = 0; i < NR_INODE_TYPE; i++) {
3264 INIT_LIST_HEAD(&sbi->inode_list[i]);
3265 spin_lock_init(&sbi->inode_lock[i]);
3266 }
aff063e2 3267
4d57b86d 3268 f2fs_init_extent_cache_info(sbi);
1dcc336b 3269
4d57b86d 3270 f2fs_init_ino_entry_info(sbi);
aff063e2 3271
50fa53ec
CY		 3272 f2fs_init_fsync_node_info(sbi);
3273
aff063e2 3274 /* setup f2fs internal modules */
4d57b86d 3275 err = f2fs_build_segment_manager(sbi);
a07ef784
NJ		 3276 if (err) {
3277 f2fs_msg(sb, KERN_ERR,
3278 "Failed to initialize F2FS segment manager");
aff063e2 3279 goto free_sm;
a07ef784 3280 }
4d57b86d 3281 err = f2fs_build_node_manager(sbi);
a07ef784
NJ		 3282 if (err) {
3283 f2fs_msg(sb, KERN_ERR,
3284 "Failed to initialize F2FS node manager");
aff063e2 3285 goto free_nm;
a07ef784 3286 }
aff063e2 3287
8f1dbbbb
SL		 3288 /* For write statistics */
3289 if (sb->s_bdev->bd_part)
3290 sbi->sectors_written_start =
dbae2c55
MC		 3291 (u64)part_stat_read(sb->s_bdev->bd_part,
3292 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3293
3294 /* Read accumulated write IO statistics if exists */
3295 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3296 if (__exist_node_summaries(sbi))
3297 sbi->kbytes_written =
b2dde6fc 3298 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3299
4d57b86d 3300 f2fs_build_gc_manager(sbi);
aff063e2 3301
60aa4d55
ST		 3302 err = f2fs_build_stats(sbi);
3303 if (err)
3304 goto free_nm;
3305
aff063e2
JK		 3306 /* get an inode for node space */
3307 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3308 if (IS_ERR(sbi->node_inode)) {
a07ef784 3309 f2fs_msg(sb, KERN_ERR, "Failed to read node inode");
aff063e2 3310 err = PTR_ERR(sbi->node_inode);
60aa4d55 3311 goto free_stats;
aff063e2
JK		 3312 }
3313
aff063e2
JK		 3314 /* read root inode and dentry */
3315 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3316 if (IS_ERR(root)) {
a07ef784 3317 f2fs_msg(sb, KERN_ERR, "Failed to read root inode");
aff063e2 3318 err = PTR_ERR(root);
60aa4d55 3319 goto free_node_inode;
aff063e2 3320 }
bcbfbd60
CY		 3321 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3322 !root->i_size || !root->i_nlink) {
9d847950 3323 iput(root);
8f99a946 3324 err = -EINVAL;
60aa4d55 3325 goto free_node_inode;
8f99a946 3326 }
aff063e2
JK		 3327
3328 sb->s_root = d_make_root(root); /* allocate root dentry */
3329 if (!sb->s_root) {
3330 err = -ENOMEM;
025cdb16 3331 goto free_node_inode;
aff063e2
JK		 3332 }
3333
dc6b2055 3334 err = f2fs_register_sysfs(sbi);
b59d0bae 3335 if (err)
a398101a 3336 goto free_root_inode;
b59d0bae 3337
ea676733 3338#ifdef CONFIG_QUOTA
76cf05d7 3339 /* Enable quota usage during mount */
7beb01f7 3340 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
ea676733 3341 err = f2fs_enable_quotas(sb);
730746ce 3342 if (err)
ea676733
JK		 3343 f2fs_msg(sb, KERN_ERR,
3344 "Cannot turn on quotas: error %d", err);
ea676733
JK		 3345 }
3346#endif
4b2414d0 3347 /* if there are nt orphan nodes free them */
4d57b86d 3348 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3349 if (err)
ea676733 3350 goto free_meta;
4b2414d0 3351
4354994f 3352 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
aa2c8c43 3353 goto reset_checkpoint;
4354994f 3354
6437d1b0
JK		 3355 /* recover fsynced data */
3356 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
081d78c2
JK		 3357 /*
3358 * mount should be failed, when device has readonly mode, and
3359 * previous checkpoint was not done by clean system shutdown.
3360 */
3361 if (bdev_read_only(sb->s_bdev) &&
aaec2b1d 3362 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
081d78c2 3363 err = -EROFS;
4b2414d0 3364 goto free_meta;
081d78c2 3365 }
2adc3505
CY		 3366
3367 if (need_fsck)
3368 set_sbi_flag(sbi, SBI_NEED_FSCK);
3369
aa2c8c43
CY		 3370 if (skip_recovery)
3371 goto reset_checkpoint;
a468f0ef 3372
4d57b86d 3373 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3374 if (err < 0) {
aa2c8c43
CY		 3375 if (err != -ENOMEM)
3376 skip_recovery = true;
2adc3505 3377 need_fsck = true;
6437d1b0 3378 f2fs_msg(sb, KERN_ERR,
99e3e858 3379 "Cannot recover all fsync data errno=%d", err);
4b2414d0 3380 goto free_meta;
ed2e621a 3381 }
6781eabb 3382 } else {
4d57b86d 3383 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3384
3385 if (!f2fs_readonly(sb) && err > 0) {
3386 err = -EINVAL;
3387 f2fs_msg(sb, KERN_ERR,
3388 "Need to recover fsync data");
ea676733 3389 goto free_meta;
6781eabb 3390 }
6437d1b0 3391 }
aa2c8c43 3392reset_checkpoint:
4d57b86d 3393 /* f2fs_recover_fsync_data() cleared this already */
315df839 3394 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3395
4354994f
DR		 3396 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3397 err = f2fs_disable_checkpoint(sbi);
3398 if (err)
812a9597 3399 goto sync_free_meta;
4354994f
DR		 3400 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3401 f2fs_enable_checkpoint(sbi);
3402 }
3403
6437d1b0
JK		 3404 /*
3405 * If filesystem is not mounted as read-only then
3406 * do start the gc_thread.
3407 */
6c029932 3408 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
6437d1b0 3409 /* After POR, we can run background GC thread.*/
4d57b86d 3410 err = f2fs_start_gc_thread(sbi);
6437d1b0 3411 if (err)
812a9597 3412 goto sync_free_meta;
6437d1b0 3413 }
5222595d 3414 kvfree(options);
da554e48 3415
3416 /* recover broken superblock */
f2353d7b 3417 if (recovery) {
41214b3c
CY		 3418 err = f2fs_commit_super(sbi, true);
3419 f2fs_msg(sb, KERN_INFO,
99e3e858 3420 "Try to recover %dth superblock, ret: %d",
41214b3c 3421 sbi->valid_super_block ? 1 : 2, err);
da554e48 3422 }
3423
bae01eda
CY		 3424 f2fs_join_shrinker(sbi);
3425
84b89e5d
JK		 3426 f2fs_tuning_parameters(sbi);
3427
1200abb2
JK		 3428 f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx",
3429 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3430 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3431 f2fs_update_time(sbi, REQ_TIME);
db610a64 3432 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
aff063e2 3433 return 0;
6437d1b0 3434
812a9597
JK		 3435sync_free_meta:
3436 /* safe to flush all the data */
3437 sync_filesystem(sbi->sb);
aa2c8c43 3438 retry_cnt = 0;
812a9597 3439
4b2414d0 3440free_meta:
ea676733 3441#ifdef CONFIG_QUOTA
26b5a079 3442 f2fs_truncate_quota_inode_pages(sb);
7beb01f7 3443 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb))
ea676733
JK		 3444 f2fs_quota_off_umount(sbi->sb);
3445#endif
4b2414d0 3446 /*
4d57b86d 3447 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3448 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3449 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3450 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3451 */
3452 truncate_inode_pages_final(META_MAPPING(sbi));
812a9597
JK		 3453 /* evict some inodes being cached by GC */
3454 evict_inodes(sb);
dc6b2055 3455 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3456free_root_inode:
3457 dput(sb->s_root);
3458 sb->s_root = NULL;
3459free_node_inode:
4d57b86d 3460 f2fs_release_ino_entry(sbi, true);
bae01eda 3461 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2 3462 iput(sbi->node_inode);
7c77bf7d 3463 sbi->node_inode = NULL;
60aa4d55
ST		 3464free_stats:
3465 f2fs_destroy_stats(sbi);
aff063e2 3466free_nm:
4d57b86d 3467 f2fs_destroy_node_manager(sbi);
aff063e2 3468free_sm:
4d57b86d 3469 f2fs_destroy_segment_manager(sbi);
3c62be17
JK		 3470free_devices:
3471 destroy_device_list(sbi);
5222595d 3472 kvfree(sbi->ckpt);
aff063e2
JK		 3473free_meta_inode:
3474 make_bad_inode(sbi->meta_inode);
3475 iput(sbi->meta_inode);
7c77bf7d 3476 sbi->meta_inode = NULL;
0a595eba
JK		 3477free_io_dummy:
3478 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3479free_percpu:
3480 destroy_percpu_info(sbi);
3481free_bio_info:
a912b54d 3482 for (i = 0; i < NR_PAGE_TYPE; i++)
5222595d 3483 kvfree(sbi->write_io[i]);
d7997e63 3484free_options:
4b2414d0
CY		 3485#ifdef CONFIG_QUOTA
3486 for (i = 0; i < MAXQUOTAS; i++)
5222595d 3487 kvfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3488#endif
5222595d 3489 kvfree(options);
aff063e2 3490free_sb_buf:
5222595d 3491 kvfree(raw_super);
aff063e2 3492free_sbi:
43b6573b
KM		 3493 if (sbi->s_chksum_driver)
3494 crypto_free_shash(sbi->s_chksum_driver);
5222595d 3495 kvfree(sbi);
ed2e621a
JK		 3496
3497 /* give only one another chance */
aa2c8c43
CY		 3498 if (retry_cnt > 0 && skip_recovery) {
3499 retry_cnt--;
ed2e621a
JK		 3500 shrink_dcache_sb(sb);
3501 goto try_onemore;
3502 }
aff063e2
JK		 3503 return err;
3504}
3505
3506static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3507 const char *dev_name, void *data)
3508{
3509 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3510}
3511
30a5537f
JK		 3512static void kill_f2fs_super(struct super_block *sb)
3513{
cce13252 3514 if (sb->s_root) {
1cb50f87
JK		 3515 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3516
3517 set_sbi_flag(sbi, SBI_IS_CLOSE);
3518 f2fs_stop_gc_thread(sbi);
3519 f2fs_stop_discard_thread(sbi);
3520
3521 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3522 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3523 struct cp_control cpc = {
3524 .reason = CP_UMOUNT,
3525 };
3526 f2fs_write_checkpoint(sbi, &cpc);
3527 }
1378752b
CY		 3528
3529 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3530 sb->s_flags &= ~SB_RDONLY;
cce13252 3531 }
30a5537f
JK		 3532 kill_block_super(sb);
3533}
3534
aff063e2
JK		 3535static struct file_system_type f2fs_fs_type = {
3536 .owner = THIS_MODULE,
3537 .name = "f2fs",
3538 .mount = f2fs_mount,
30a5537f 3539 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3540 .fs_flags = FS_REQUIRES_DEV,
3541};
7f78e035 3542MODULE_ALIAS_FS("f2fs");
aff063e2 3543
6e6093a8 3544static int __init init_inodecache(void)
aff063e2 3545{
5d097056
VD		 3546 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3547 sizeof(struct f2fs_inode_info), 0,
3548 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3549 if (!f2fs_inode_cachep)
aff063e2
JK		 3550 return -ENOMEM;
3551 return 0;
3552}
3553
3554static void destroy_inodecache(void)
3555{
3556 /*
3557 * Make sure all delayed rcu free inodes are flushed before we
3558 * destroy cache.
3559 */
3560 rcu_barrier();
3561 kmem_cache_destroy(f2fs_inode_cachep);
3562}
3563
3564static int __init init_f2fs_fs(void)
3565{
3566 int err;
3567
4071e67c
AP		 3568 if (PAGE_SIZE != F2FS_BLKSIZE) {
3569 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3570 PAGE_SIZE, F2FS_BLKSIZE);
3571 return -EINVAL;
3572 }
3573
c0508650
JK		 3574 f2fs_build_trace_ios();
3575
aff063e2
JK		 3576 err = init_inodecache();
3577 if (err)
3578 goto fail;
4d57b86d 3579 err = f2fs_create_node_manager_caches();
aff063e2 3580 if (err)
9890ff3f 3581 goto free_inodecache;
4d57b86d 3582 err = f2fs_create_segment_manager_caches();
aff063e2 3583 if (err)
9890ff3f 3584 goto free_node_manager_caches;
4d57b86d 3585 err = f2fs_create_checkpoint_caches();
aff063e2 3586 if (err)
06292073 3587 goto free_segment_manager_caches;
4d57b86d 3588 err = f2fs_create_extent_cache();
1dcc336b
CY		 3589 if (err)
3590 goto free_checkpoint_caches;
dc6b2055 3591 err = f2fs_init_sysfs();
a398101a 3592 if (err)
1dcc336b 3593 goto free_extent_cache;
2658e50d 3594 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3595 if (err)
a398101a 3596 goto free_sysfs;
2658e50d
JK		 3597 err = register_filesystem(&f2fs_fs_type);
3598 if (err)
3599 goto free_shrinker;
c20e57b3 3600 f2fs_create_root_stats();
6dbb1796
EB		 3601 err = f2fs_init_post_read_processing();
3602 if (err)
3603 goto free_root_stats;
9890ff3f
ZH		 3604 return 0;
3605
6dbb1796
EB		 3606free_root_stats:
3607 f2fs_destroy_root_stats();
787c7b8c 3608 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3609free_shrinker:
3610 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3611free_sysfs:
dc6b2055 3612 f2fs_exit_sysfs();
1dcc336b 3613free_extent_cache:
4d57b86d 3614 f2fs_destroy_extent_cache();
9890ff3f 3615free_checkpoint_caches:
4d57b86d 3616 f2fs_destroy_checkpoint_caches();
7fd9e544 3617free_segment_manager_caches:
4d57b86d 3618 f2fs_destroy_segment_manager_caches();
9890ff3f 3619free_node_manager_caches:
4d57b86d 3620 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3621free_inodecache:
3622 destroy_inodecache();
aff063e2
JK		 3623fail:
3624 return err;
3625}
3626
3627static void __exit exit_f2fs_fs(void)
3628{
6dbb1796 3629 f2fs_destroy_post_read_processing();
4589d25d 3630 f2fs_destroy_root_stats();
aff063e2 3631 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3632 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3633 f2fs_exit_sysfs();
4d57b86d
CY		 3634 f2fs_destroy_extent_cache();
3635 f2fs_destroy_checkpoint_caches();
3636 f2fs_destroy_segment_manager_caches();
3637 f2fs_destroy_node_manager_caches();
aff063e2 3638 destroy_inodecache();
351f4fba 3639 f2fs_destroy_trace_ios();
aff063e2
JK		 3640}
3641
3642module_init(init_f2fs_fs)
3643module_exit(exit_f2fs_fs)
3644
3645MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3646MODULE_DESCRIPTION("Flash Friendly File System");
3647MODULE_LICENSE("GPL");
b4b9d34c 3648
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