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f2fs: fix error path of move_data_page
[mirror_ubuntu-hirsute-kernel.git] / fs / f2fs / super.c
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0a8165d7 1/*
aff063e2
JK		 2 * fs/f2fs/super.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/module.h>
12#include <linux/init.h>
13#include <linux/fs.h>
14#include <linux/statfs.h>
aff063e2
JK		 15#include <linux/buffer_head.h>
16#include <linux/backing-dev.h>
17#include <linux/kthread.h>
18#include <linux/parser.h>
19#include <linux/mount.h>
20#include <linux/seq_file.h>
5e176d54 21#include <linux/proc_fs.h>
aff063e2
JK		 22#include <linux/random.h>
23#include <linux/exportfs.h>
d3ee456d 24#include <linux/blkdev.h>
0abd675e 25#include <linux/quotaops.h>
aff063e2 26#include <linux/f2fs_fs.h>
b59d0bae 27#include <linux/sysfs.h>
4b2414d0 28#include <linux/quota.h>
aff063e2
JK		 29
30#include "f2fs.h"
31#include "node.h"
5ec4e49f 32#include "segment.h"
aff063e2 33#include "xattr.h"
b59d0bae 34#include "gc.h"
db9f7c1a 35#include "trace.h"
aff063e2 36
a2a4a7e4
NJ		 37#define CREATE_TRACE_POINTS
38#include <trace/events/f2fs.h>
39
aff063e2
JK		 40static struct kmem_cache *f2fs_inode_cachep;
41
73faec4d 42#ifdef CONFIG_F2FS_FAULT_INJECTION
2c63fead
JK		 43
44char *fault_name[FAULT_MAX] = {
45 [FAULT_KMALLOC] = "kmalloc",
628b3d14 46 [FAULT_KVMALLOC] = "kvmalloc",
c41f3cc3 47 [FAULT_PAGE_ALLOC] = "page alloc",
01eccef7 48 [FAULT_PAGE_GET] = "page get",
d62fe971 49 [FAULT_ALLOC_BIO] = "alloc bio",
cb78942b
JK		 50 [FAULT_ALLOC_NID] = "alloc nid",
51 [FAULT_ORPHAN] = "orphan",
52 [FAULT_BLOCK] = "no more block",
53 [FAULT_DIR_DEPTH] = "too big dir depth",
53aa6bbf 54 [FAULT_EVICT_INODE] = "evict_inode fail",
14b44d23 55 [FAULT_TRUNCATE] = "truncate fail",
8b038c70 56 [FAULT_IO] = "IO error",
0f348028 57 [FAULT_CHECKPOINT] = "checkpoint error",
2c63fead 58};
08796897 59
1ecc0c5c
CY		 60static void f2fs_build_fault_attr(struct f2fs_sb_info *sbi,
61 unsigned int rate)
08796897 62{
63189b78 63 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1ecc0c5c 64
08796897 65 if (rate) {
1ecc0c5c
CY		 66 atomic_set(&ffi->inject_ops, 0);
67 ffi->inject_rate = rate;
68 ffi->inject_type = (1 << FAULT_MAX) - 1;
08796897 69 } else {
1ecc0c5c 70 memset(ffi, 0, sizeof(struct f2fs_fault_info));
08796897
SY		 71 }
72}
73faec4d
JK		 73#endif
74
2658e50d
JK		 75/* f2fs-wide shrinker description */
76static struct shrinker f2fs_shrinker_info = {
77 .scan_objects = f2fs_shrink_scan,
78 .count_objects = f2fs_shrink_count,
79 .seeks = DEFAULT_SEEKS,
80};
81
aff063e2 82enum {
696c018c 83 Opt_gc_background,
aff063e2 84 Opt_disable_roll_forward,
2d834bf9 85 Opt_norecovery,
aff063e2 86 Opt_discard,
64058be9 87 Opt_nodiscard,
aff063e2 88 Opt_noheap,
7a20b8a6 89 Opt_heap,
4058c511 90 Opt_user_xattr,
aff063e2 91 Opt_nouser_xattr,
4058c511 92 Opt_acl,
aff063e2
JK		 93 Opt_noacl,
94 Opt_active_logs,
95 Opt_disable_ext_identify,
444c580f 96 Opt_inline_xattr,
23cf7212 97 Opt_noinline_xattr,
6afc662e 98 Opt_inline_xattr_size,
8274de77 99 Opt_inline_data,
5efd3c6f 100 Opt_inline_dentry,
97c1794a 101 Opt_noinline_dentry,
6b4afdd7 102 Opt_flush_merge,
69e9e427 103 Opt_noflush_merge,
0f7b2abd 104 Opt_nobarrier,
d5053a34 105 Opt_fastboot,
89672159 106 Opt_extent_cache,
7daaea25 107 Opt_noextent_cache,
75342797 108 Opt_noinline_data,
343f40f0 109 Opt_data_flush,
7e65be49 110 Opt_reserve_root,
7c2e5963
JK		 111 Opt_resgid,
112 Opt_resuid,
36abef4e 113 Opt_mode,
ec91538d 114 Opt_io_size_bits,
73faec4d 115 Opt_fault_injection,
6d94c74a
JK		 116 Opt_lazytime,
117 Opt_nolazytime,
4b2414d0
CY		 118 Opt_quota,
119 Opt_noquota,
0abd675e
CY		 120 Opt_usrquota,
121 Opt_grpquota,
5c57132e 122 Opt_prjquota,
4b2414d0
CY		 123 Opt_usrjquota,
124 Opt_grpjquota,
125 Opt_prjjquota,
126 Opt_offusrjquota,
127 Opt_offgrpjquota,
128 Opt_offprjjquota,
129 Opt_jqfmt_vfsold,
130 Opt_jqfmt_vfsv0,
131 Opt_jqfmt_vfsv1,
0cdd3195 132 Opt_whint,
07939627 133 Opt_alloc,
93cf93f1 134 Opt_fsync,
ff62af20 135 Opt_test_dummy_encryption,
aff063e2
JK		 136 Opt_err,
137};
138
139static match_table_t f2fs_tokens = {
696c018c 140 {Opt_gc_background, "background_gc=%s"},
aff063e2 141 {Opt_disable_roll_forward, "disable_roll_forward"},
2d834bf9 142 {Opt_norecovery, "norecovery"},
aff063e2 143 {Opt_discard, "discard"},
64058be9 144 {Opt_nodiscard, "nodiscard"},
aff063e2 145 {Opt_noheap, "no_heap"},
7a20b8a6 146 {Opt_heap, "heap"},
4058c511 147 {Opt_user_xattr, "user_xattr"},
aff063e2 148 {Opt_nouser_xattr, "nouser_xattr"},
4058c511 149 {Opt_acl, "acl"},
aff063e2
JK		 150 {Opt_noacl, "noacl"},
151 {Opt_active_logs, "active_logs=%u"},
152 {Opt_disable_ext_identify, "disable_ext_identify"},
444c580f 153 {Opt_inline_xattr, "inline_xattr"},
23cf7212 154 {Opt_noinline_xattr, "noinline_xattr"},
6afc662e 155 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
8274de77 156 {Opt_inline_data, "inline_data"},
5efd3c6f 157 {Opt_inline_dentry, "inline_dentry"},
97c1794a 158 {Opt_noinline_dentry, "noinline_dentry"},
6b4afdd7 159 {Opt_flush_merge, "flush_merge"},
69e9e427 160 {Opt_noflush_merge, "noflush_merge"},
0f7b2abd 161 {Opt_nobarrier, "nobarrier"},
d5053a34 162 {Opt_fastboot, "fastboot"},
89672159 163 {Opt_extent_cache, "extent_cache"},
7daaea25 164 {Opt_noextent_cache, "noextent_cache"},
75342797 165 {Opt_noinline_data, "noinline_data"},
343f40f0 166 {Opt_data_flush, "data_flush"},
7e65be49 167 {Opt_reserve_root, "reserve_root=%u"},
7c2e5963
JK		 168 {Opt_resgid, "resgid=%u"},
169 {Opt_resuid, "resuid=%u"},
36abef4e 170 {Opt_mode, "mode=%s"},
ec91538d 171 {Opt_io_size_bits, "io_bits=%u"},
73faec4d 172 {Opt_fault_injection, "fault_injection=%u"},
6d94c74a
JK		 173 {Opt_lazytime, "lazytime"},
174 {Opt_nolazytime, "nolazytime"},
4b2414d0
CY		 175 {Opt_quota, "quota"},
176 {Opt_noquota, "noquota"},
0abd675e
CY		 177 {Opt_usrquota, "usrquota"},
178 {Opt_grpquota, "grpquota"},
5c57132e 179 {Opt_prjquota, "prjquota"},
4b2414d0
CY		 180 {Opt_usrjquota, "usrjquota=%s"},
181 {Opt_grpjquota, "grpjquota=%s"},
182 {Opt_prjjquota, "prjjquota=%s"},
183 {Opt_offusrjquota, "usrjquota="},
184 {Opt_offgrpjquota, "grpjquota="},
185 {Opt_offprjjquota, "prjjquota="},
186 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
187 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
188 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
0cdd3195 189 {Opt_whint, "whint_mode=%s"},
07939627 190 {Opt_alloc, "alloc_mode=%s"},
93cf93f1 191 {Opt_fsync, "fsync_mode=%s"},
ff62af20 192 {Opt_test_dummy_encryption, "test_dummy_encryption"},
aff063e2
JK		 193 {Opt_err, NULL},
194};
195
a07ef784
NJ		 196void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...)
197{
198 struct va_format vaf;
199 va_list args;
200
201 va_start(args, fmt);
202 vaf.fmt = fmt;
203 vaf.va = &args;
a36c106d 204 printk_ratelimited("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf);
a07ef784
NJ		 205 va_end(args);
206}
207
7e65be49
JK		 208static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
209{
210 block_t limit = (sbi->user_block_count << 1) / 1000;
211
212 /* limit is 0.2% */
63189b78
CY		 213 if (test_opt(sbi, RESERVE_ROOT) &&
214 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
215 F2FS_OPTION(sbi).root_reserved_blocks = limit;
7e65be49
JK		 216 f2fs_msg(sbi->sb, KERN_INFO,
217 "Reduce reserved blocks for root = %u",
63189b78 218 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 219 }
7c2e5963 220 if (!test_opt(sbi, RESERVE_ROOT) &&
63189b78 221 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
7c2e5963 222 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
63189b78 223 !gid_eq(F2FS_OPTION(sbi).s_resgid,
7c2e5963
JK		 224 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
225 f2fs_msg(sbi->sb, KERN_INFO,
226 "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
63189b78
CY		 227 from_kuid_munged(&init_user_ns,
228 F2FS_OPTION(sbi).s_resuid),
229 from_kgid_munged(&init_user_ns,
230 F2FS_OPTION(sbi).s_resgid));
7e65be49
JK		 231}
232
aff063e2
JK		 233static void init_once(void *foo)
234{
235 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
236
aff063e2
JK		 237 inode_init_once(&fi->vfs_inode);
238}
239
4b2414d0
CY		 240#ifdef CONFIG_QUOTA
241static const char * const quotatypes[] = INITQFNAMES;
242#define QTYPE2NAME(t) (quotatypes[t])
243static int f2fs_set_qf_name(struct super_block *sb, int qtype,
244 substring_t *args)
245{
246 struct f2fs_sb_info *sbi = F2FS_SB(sb);
247 char *qname;
248 int ret = -EINVAL;
249
63189b78 250 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
4b2414d0
CY		 251 f2fs_msg(sb, KERN_ERR,
252 "Cannot change journaled "
253 "quota options when quota turned on");
254 return -EINVAL;
255 }
ea676733
JK		 256 if (f2fs_sb_has_quota_ino(sb)) {
257 f2fs_msg(sb, KERN_INFO,
258 "QUOTA feature is enabled, so ignore qf_name");
259 return 0;
260 }
261
4b2414d0
CY		 262 qname = match_strdup(args);
263 if (!qname) {
264 f2fs_msg(sb, KERN_ERR,
265 "Not enough memory for storing quotafile name");
266 return -EINVAL;
267 }
63189b78
CY		 268 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
269 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
4b2414d0
CY		 270 ret = 0;
271 else
272 f2fs_msg(sb, KERN_ERR,
273 "%s quota file already specified",
274 QTYPE2NAME(qtype));
275 goto errout;
276 }
277 if (strchr(qname, '/')) {
278 f2fs_msg(sb, KERN_ERR,
279 "quotafile must be on filesystem root");
280 goto errout;
281 }
63189b78 282 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
4b2414d0
CY		 283 set_opt(sbi, QUOTA);
284 return 0;
285errout:
286 kfree(qname);
287 return ret;
288}
289
290static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
291{
292 struct f2fs_sb_info *sbi = F2FS_SB(sb);
293
63189b78 294 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
4b2414d0
CY		 295 f2fs_msg(sb, KERN_ERR, "Cannot change journaled quota options"
296 " when quota turned on");
297 return -EINVAL;
298 }
63189b78
CY		 299 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
300 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
4b2414d0
CY		 301 return 0;
302}
303
304static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
305{
306 /*
307 * We do the test below only for project quotas. 'usrquota' and
308 * 'grpquota' mount options are allowed even without quota feature
309 * to support legacy quotas in quota files.
310 */
311 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi->sb)) {
312 f2fs_msg(sbi->sb, KERN_ERR, "Project quota feature not enabled. "
313 "Cannot enable project quota enforcement.");
314 return -1;
315 }
63189b78
CY		 316 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
317 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
318 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
319 if (test_opt(sbi, USRQUOTA) &&
320 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
4b2414d0
CY		 321 clear_opt(sbi, USRQUOTA);
322
63189b78
CY		 323 if (test_opt(sbi, GRPQUOTA) &&
324 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
4b2414d0
CY		 325 clear_opt(sbi, GRPQUOTA);
326
63189b78
CY		 327 if (test_opt(sbi, PRJQUOTA) &&
328 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4b2414d0
CY		 329 clear_opt(sbi, PRJQUOTA);
330
331 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
332 test_opt(sbi, PRJQUOTA)) {
333 f2fs_msg(sbi->sb, KERN_ERR, "old and new quota "
334 "format mixing");
335 return -1;
336 }
337
63189b78 338 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 339 f2fs_msg(sbi->sb, KERN_ERR, "journaled quota format "
340 "not specified");
341 return -1;
342 }
343 }
ea676733 344
63189b78 345 if (f2fs_sb_has_quota_ino(sbi->sb) && F2FS_OPTION(sbi).s_jquota_fmt) {
ea676733
JK		 346 f2fs_msg(sbi->sb, KERN_INFO,
347 "QUOTA feature is enabled, so ignore jquota_fmt");
63189b78 348 F2FS_OPTION(sbi).s_jquota_fmt = 0;
ea676733 349 }
deeedd71 350 if (f2fs_sb_has_quota_ino(sbi->sb) && f2fs_readonly(sbi->sb)) {
ea676733
JK		 351 f2fs_msg(sbi->sb, KERN_INFO,
352 "Filesystem with quota feature cannot be mounted RDWR "
353 "without CONFIG_QUOTA");
354 return -1;
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);
09d54cdd 363 struct request_queue *q;
696c018c
NJ		 364 substring_t args[MAX_OPT_ARGS];
365 char *p, *name;
366 int arg = 0;
7c2e5963
JK		 367 kuid_t uid;
368 kgid_t gid;
4b2414d0
CY		 369#ifdef CONFIG_QUOTA
370 int ret;
371#endif
696c018c
NJ		 372
373 if (!options)
374 return 0;
375
376 while ((p = strsep(&options, ",")) != NULL) {
377 int token;
378 if (!*p)
379 continue;
380 /*
381 * Initialize args struct so we know whether arg was
382 * found; some options take optional arguments.
383 */
384 args[0].to = args[0].from = NULL;
385 token = match_token(p, f2fs_tokens, args);
386
387 switch (token) {
388 case Opt_gc_background:
389 name = match_strdup(&args[0]);
390
391 if (!name)
392 return -ENOMEM;
6aefd93b 393 if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
696c018c 394 set_opt(sbi, BG_GC);
6aefd93b
JK		 395 clear_opt(sbi, FORCE_FG_GC);
396 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
696c018c 397 clear_opt(sbi, BG_GC);
6aefd93b
JK		 398 clear_opt(sbi, FORCE_FG_GC);
399 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
400 set_opt(sbi, BG_GC);
401 set_opt(sbi, FORCE_FG_GC);
402 } else {
696c018c
NJ		 403 kfree(name);
404 return -EINVAL;
405 }
406 kfree(name);
407 break;
408 case Opt_disable_roll_forward:
409 set_opt(sbi, DISABLE_ROLL_FORWARD);
410 break;
2d834bf9
JK		 411 case Opt_norecovery:
412 /* this option mounts f2fs with ro */
413 set_opt(sbi, DISABLE_ROLL_FORWARD);
414 if (!f2fs_readonly(sb))
415 return -EINVAL;
416 break;
696c018c 417 case Opt_discard:
09d54cdd
CY		 418 q = bdev_get_queue(sb->s_bdev);
419 if (blk_queue_discard(q)) {
420 set_opt(sbi, DISCARD);
ccd31cb2 421 } else if (!f2fs_sb_has_blkzoned(sb)) {
09d54cdd
CY		 422 f2fs_msg(sb, KERN_WARNING,
423 "mounting with \"discard\" option, but "
424 "the device does not support discard");
425 }
696c018c 426 break;
64058be9 427 case Opt_nodiscard:
ccd31cb2 428 if (f2fs_sb_has_blkzoned(sb)) {
96ba2dec
DLM		 429 f2fs_msg(sb, KERN_WARNING,
430 "discard is required for zoned block devices");
431 return -EINVAL;
432 }
64058be9 433 clear_opt(sbi, DISCARD);
487df616 434 break;
696c018c
NJ		 435 case Opt_noheap:
436 set_opt(sbi, NOHEAP);
437 break;
7a20b8a6
JK		 438 case Opt_heap:
439 clear_opt(sbi, NOHEAP);
440 break;
696c018c 441#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 442 case Opt_user_xattr:
443 set_opt(sbi, XATTR_USER);
444 break;
696c018c
NJ		 445 case Opt_nouser_xattr:
446 clear_opt(sbi, XATTR_USER);
447 break;
444c580f
JK		 448 case Opt_inline_xattr:
449 set_opt(sbi, INLINE_XATTR);
450 break;
23cf7212
CY		 451 case Opt_noinline_xattr:
452 clear_opt(sbi, INLINE_XATTR);
453 break;
6afc662e
CY		 454 case Opt_inline_xattr_size:
455 if (args->from && match_int(args, &arg))
456 return -EINVAL;
457 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 458 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 459 break;
696c018c 460#else
4058c511
KA		 461 case Opt_user_xattr:
462 f2fs_msg(sb, KERN_INFO,
463 "user_xattr options not supported");
464 break;
696c018c
NJ		 465 case Opt_nouser_xattr:
466 f2fs_msg(sb, KERN_INFO,
467 "nouser_xattr options not supported");
468 break;
444c580f
JK		 469 case Opt_inline_xattr:
470 f2fs_msg(sb, KERN_INFO,
471 "inline_xattr options not supported");
472 break;
23cf7212
CY		 473 case Opt_noinline_xattr:
474 f2fs_msg(sb, KERN_INFO,
475 "noinline_xattr options not supported");
476 break;
696c018c
NJ		 477#endif
478#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 479 case Opt_acl:
480 set_opt(sbi, POSIX_ACL);
481 break;
696c018c
NJ		 482 case Opt_noacl:
483 clear_opt(sbi, POSIX_ACL);
484 break;
485#else
4058c511
KA		 486 case Opt_acl:
487 f2fs_msg(sb, KERN_INFO, "acl options not supported");
488 break;
696c018c
NJ		 489 case Opt_noacl:
490 f2fs_msg(sb, KERN_INFO, "noacl options not supported");
491 break;
492#endif
493 case Opt_active_logs:
494 if (args->from && match_int(args, &arg))
495 return -EINVAL;
496 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
497 return -EINVAL;
63189b78 498 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 499 break;
500 case Opt_disable_ext_identify:
501 set_opt(sbi, DISABLE_EXT_IDENTIFY);
502 break;
8274de77
HL		 503 case Opt_inline_data:
504 set_opt(sbi, INLINE_DATA);
505 break;
5efd3c6f
CY		 506 case Opt_inline_dentry:
507 set_opt(sbi, INLINE_DENTRY);
508 break;
97c1794a
CY		 509 case Opt_noinline_dentry:
510 clear_opt(sbi, INLINE_DENTRY);
511 break;
6b4afdd7
JK		 512 case Opt_flush_merge:
513 set_opt(sbi, FLUSH_MERGE);
514 break;
69e9e427
JK		 515 case Opt_noflush_merge:
516 clear_opt(sbi, FLUSH_MERGE);
517 break;
0f7b2abd
JK		 518 case Opt_nobarrier:
519 set_opt(sbi, NOBARRIER);
520 break;
d5053a34
JK		 521 case Opt_fastboot:
522 set_opt(sbi, FASTBOOT);
523 break;
89672159
CY		 524 case Opt_extent_cache:
525 set_opt(sbi, EXTENT_CACHE);
526 break;
7daaea25
JK		 527 case Opt_noextent_cache:
528 clear_opt(sbi, EXTENT_CACHE);
529 break;
75342797
WL		 530 case Opt_noinline_data:
531 clear_opt(sbi, INLINE_DATA);
532 break;
343f40f0
CY		 533 case Opt_data_flush:
534 set_opt(sbi, DATA_FLUSH);
535 break;
7e65be49
JK		 536 case Opt_reserve_root:
537 if (args->from && match_int(args, &arg))
538 return -EINVAL;
539 if (test_opt(sbi, RESERVE_ROOT)) {
540 f2fs_msg(sb, KERN_INFO,
541 "Preserve previous reserve_root=%u",
63189b78 542 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 543 } else {
63189b78 544 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 545 set_opt(sbi, RESERVE_ROOT);
546 }
547 break;
7c2e5963
JK		 548 case Opt_resuid:
549 if (args->from && match_int(args, &arg))
550 return -EINVAL;
551 uid = make_kuid(current_user_ns(), arg);
552 if (!uid_valid(uid)) {
553 f2fs_msg(sb, KERN_ERR,
554 "Invalid uid value %d", arg);
555 return -EINVAL;
556 }
63189b78 557 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 558 break;
559 case Opt_resgid:
560 if (args->from && match_int(args, &arg))
561 return -EINVAL;
562 gid = make_kgid(current_user_ns(), arg);
563 if (!gid_valid(gid)) {
564 f2fs_msg(sb, KERN_ERR,
565 "Invalid gid value %d", arg);
566 return -EINVAL;
567 }
63189b78 568 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 569 break;
36abef4e
JK		 570 case Opt_mode:
571 name = match_strdup(&args[0]);
572
573 if (!name)
574 return -ENOMEM;
575 if (strlen(name) == 8 &&
576 !strncmp(name, "adaptive", 8)) {
ccd31cb2 577 if (f2fs_sb_has_blkzoned(sb)) {
3adc57e9
DLM		 578 f2fs_msg(sb, KERN_WARNING,
579 "adaptive mode is not allowed with "
580 "zoned block device feature");
581 kfree(name);
582 return -EINVAL;
583 }
52763a4b 584 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
36abef4e
JK		 585 } else if (strlen(name) == 3 &&
586 !strncmp(name, "lfs", 3)) {
52763a4b 587 set_opt_mode(sbi, F2FS_MOUNT_LFS);
36abef4e
JK		 588 } else {
589 kfree(name);
590 return -EINVAL;
591 }
592 kfree(name);
593 break;
ec91538d
JK		 594 case Opt_io_size_bits:
595 if (args->from && match_int(args, &arg))
596 return -EINVAL;
597 if (arg > __ilog2_u32(BIO_MAX_PAGES)) {
598 f2fs_msg(sb, KERN_WARNING,
599 "Not support %d, larger than %d",
600 1 << arg, BIO_MAX_PAGES);
601 return -EINVAL;
602 }
63189b78 603 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 604 break;
73faec4d
JK		 605 case Opt_fault_injection:
606 if (args->from && match_int(args, &arg))
607 return -EINVAL;
608#ifdef CONFIG_F2FS_FAULT_INJECTION
1ecc0c5c 609 f2fs_build_fault_attr(sbi, arg);
0cc0dec2 610 set_opt(sbi, FAULT_INJECTION);
73faec4d
JK		 611#else
612 f2fs_msg(sb, KERN_INFO,
613 "FAULT_INJECTION was not selected");
614#endif
615 break;
6d94c74a 616 case Opt_lazytime:
1751e8a6 617 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 618 break;
619 case Opt_nolazytime:
1751e8a6 620 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 621 break;
0abd675e 622#ifdef CONFIG_QUOTA
4b2414d0 623 case Opt_quota:
0abd675e
CY		 624 case Opt_usrquota:
625 set_opt(sbi, USRQUOTA);
626 break;
627 case Opt_grpquota:
628 set_opt(sbi, GRPQUOTA);
629 break;
5c57132e
CY		 630 case Opt_prjquota:
631 set_opt(sbi, PRJQUOTA);
632 break;
4b2414d0
CY		 633 case Opt_usrjquota:
634 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
635 if (ret)
636 return ret;
637 break;
638 case Opt_grpjquota:
639 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
640 if (ret)
641 return ret;
642 break;
643 case Opt_prjjquota:
644 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
645 if (ret)
646 return ret;
647 break;
648 case Opt_offusrjquota:
649 ret = f2fs_clear_qf_name(sb, USRQUOTA);
650 if (ret)
651 return ret;
652 break;
653 case Opt_offgrpjquota:
654 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
655 if (ret)
656 return ret;
657 break;
658 case Opt_offprjjquota:
659 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
660 if (ret)
661 return ret;
662 break;
663 case Opt_jqfmt_vfsold:
63189b78 664 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 665 break;
666 case Opt_jqfmt_vfsv0:
63189b78 667 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 668 break;
669 case Opt_jqfmt_vfsv1:
63189b78 670 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 671 break;
672 case Opt_noquota:
673 clear_opt(sbi, QUOTA);
674 clear_opt(sbi, USRQUOTA);
675 clear_opt(sbi, GRPQUOTA);
676 clear_opt(sbi, PRJQUOTA);
677 break;
0abd675e 678#else
4b2414d0 679 case Opt_quota:
0abd675e
CY		 680 case Opt_usrquota:
681 case Opt_grpquota:
5c57132e 682 case Opt_prjquota:
4b2414d0
CY		 683 case Opt_usrjquota:
684 case Opt_grpjquota:
685 case Opt_prjjquota:
686 case Opt_offusrjquota:
687 case Opt_offgrpjquota:
688 case Opt_offprjjquota:
689 case Opt_jqfmt_vfsold:
690 case Opt_jqfmt_vfsv0:
691 case Opt_jqfmt_vfsv1:
692 case Opt_noquota:
0abd675e
CY		 693 f2fs_msg(sb, KERN_INFO,
694 "quota operations not supported");
695 break;
696#endif
0cdd3195
HL		 697 case Opt_whint:
698 name = match_strdup(&args[0]);
699 if (!name)
700 return -ENOMEM;
701 if (strlen(name) == 10 &&
702 !strncmp(name, "user-based", 10)) {
63189b78 703 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
0cdd3195
HL		 704 } else if (strlen(name) == 3 &&
705 !strncmp(name, "off", 3)) {
63189b78 706 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
f2e703f9
HL		 707 } else if (strlen(name) == 8 &&
708 !strncmp(name, "fs-based", 8)) {
63189b78 709 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
0cdd3195
HL		 710 } else {
711 kfree(name);
712 return -EINVAL;
713 }
714 kfree(name);
715 break;
07939627
JK		 716 case Opt_alloc:
717 name = match_strdup(&args[0]);
718 if (!name)
719 return -ENOMEM;
720
721 if (strlen(name) == 7 &&
722 !strncmp(name, "default", 7)) {
63189b78 723 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
07939627
JK		 724 } else if (strlen(name) == 5 &&
725 !strncmp(name, "reuse", 5)) {
63189b78 726 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627
JK		 727 } else {
728 kfree(name);
729 return -EINVAL;
730 }
731 kfree(name);
732 break;
93cf93f1
JZ		 733 case Opt_fsync:
734 name = match_strdup(&args[0]);
735 if (!name)
736 return -ENOMEM;
737 if (strlen(name) == 5 &&
738 !strncmp(name, "posix", 5)) {
63189b78 739 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
93cf93f1
JZ		 740 } else if (strlen(name) == 6 &&
741 !strncmp(name, "strict", 6)) {
63189b78 742 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
d6290814
JK		 743 } else if (strlen(name) == 9 &&
744 !strncmp(name, "nobarrier", 9)) {
745 F2FS_OPTION(sbi).fsync_mode =
746 FSYNC_MODE_NOBARRIER;
93cf93f1
JZ		 747 } else {
748 kfree(name);
749 return -EINVAL;
750 }
751 kfree(name);
752 break;
ff62af20
SY		 753 case Opt_test_dummy_encryption:
754#ifdef CONFIG_F2FS_FS_ENCRYPTION
755 if (!f2fs_sb_has_encrypt(sb)) {
756 f2fs_msg(sb, KERN_ERR, "Encrypt feature is off");
757 return -EINVAL;
758 }
759
760 F2FS_OPTION(sbi).test_dummy_encryption = true;
761 f2fs_msg(sb, KERN_INFO,
762 "Test dummy encryption mode enabled");
763#else
764 f2fs_msg(sb, KERN_INFO,
765 "Test dummy encryption mount option ignored");
766#endif
767 break;
696c018c
NJ		 768 default:
769 f2fs_msg(sb, KERN_ERR,
770 "Unrecognized mount option \"%s\" or missing value",
771 p);
772 return -EINVAL;
773 }
774 }
4b2414d0
CY		 775#ifdef CONFIG_QUOTA
776 if (f2fs_check_quota_options(sbi))
777 return -EINVAL;
778#endif
ec91538d
JK		 779
780 if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
781 f2fs_msg(sb, KERN_ERR,
782 "Should set mode=lfs with %uKB-sized IO",
783 F2FS_IO_SIZE_KB(sbi));
784 return -EINVAL;
785 }
6afc662e
CY		 786
787 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
4d817ae0
CY		 788 if (!f2fs_sb_has_extra_attr(sb) ||
789 !f2fs_sb_has_flexible_inline_xattr(sb)) {
790 f2fs_msg(sb, KERN_ERR,
791 "extra_attr or flexible_inline_xattr "
792 "feature is off");
793 return -EINVAL;
794 }
6afc662e
CY		 795 if (!test_opt(sbi, INLINE_XATTR)) {
796 f2fs_msg(sb, KERN_ERR,
797 "inline_xattr_size option should be "
798 "set with inline_xattr option");
799 return -EINVAL;
800 }
63189b78
CY		 801 if (!F2FS_OPTION(sbi).inline_xattr_size ||
802 F2FS_OPTION(sbi).inline_xattr_size >=
803 DEF_ADDRS_PER_INODE -
6afc662e
CY		 804 F2FS_TOTAL_EXTRA_ATTR_SIZE -
805 DEF_INLINE_RESERVED_SIZE -
806 DEF_MIN_INLINE_SIZE) {
807 f2fs_msg(sb, KERN_ERR,
808 "inline xattr size is out of range");
809 return -EINVAL;
810 }
811 }
0cdd3195
HL		 812
813 /* Not pass down write hints if the number of active logs is lesser
814 * than NR_CURSEG_TYPE.
815 */
63189b78
CY		 816 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
817 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 818 return 0;
819}
820
aff063e2
JK		 821static struct inode *f2fs_alloc_inode(struct super_block *sb)
822{
823 struct f2fs_inode_info *fi;
824
a0acdfe0 825 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 826 if (!fi)
827 return NULL;
828
829 init_once((void *) fi);
830
434720fa 831 /* Initialize f2fs-specific inode info */
204706c7 832 atomic_set(&fi->dirty_pages, 0);
d928bfbf 833 init_rwsem(&fi->i_sem);
2710fd7e 834 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 835 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 836 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 837 INIT_LIST_HEAD(&fi->inmem_pages);
838 mutex_init(&fi->inmem_lock);
b2532c69
CY		 839 init_rwsem(&fi->i_gc_rwsem[READ]);
840 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 841 init_rwsem(&fi->i_mmap_sem);
27161f13 842 init_rwsem(&fi->i_xattr_sem);
aff063e2 843
ab9fa662
JK		 844 /* Will be used by directory only */
845 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 846
aff063e2
JK		 847 return &fi->vfs_inode;
848}
849
531ad7d5
JK		 850static int f2fs_drop_inode(struct inode *inode)
851{
b8d96a30 852 int ret;
531ad7d5
JK		 853 /*
854 * This is to avoid a deadlock condition like below.
855 * writeback_single_inode(inode)
856 * - f2fs_write_data_page
857 * - f2fs_gc -> iput -> evict
858 * - inode_wait_for_writeback(inode)
859 */
0f18b462 860 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 861 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 862 /* to avoid evict_inode call simultaneously */
863 atomic_inc(&inode->i_count);
06e1bc05
JK		 864 spin_unlock(&inode->i_lock);
865
866 /* some remained atomic pages should discarded */
867 if (f2fs_is_atomic_file(inode))
29b96b54 868 drop_inmem_pages(inode);
06e1bc05 869
3e72f721
JK		 870 /* should remain fi->extent_tree for writepage */
871 f2fs_destroy_extent_node(inode);
872
06e1bc05 873 sb_start_intwrite(inode->i_sb);
fc9581c8 874 f2fs_i_size_write(inode, 0);
06e1bc05
JK		 875
876 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 877 f2fs_truncate(inode);
06e1bc05
JK		 878
879 sb_end_intwrite(inode->i_sb);
880
06e1bc05 881 spin_lock(&inode->i_lock);
3e72f721 882 atomic_dec(&inode->i_count);
06e1bc05 883 }
b8d96a30 884 trace_f2fs_drop_inode(inode, 0);
531ad7d5 885 return 0;
06e1bc05 886 }
b8d96a30
HP		 887 ret = generic_drop_inode(inode);
888 trace_f2fs_drop_inode(inode, ret);
889 return ret;
531ad7d5
JK		 890}
891
7c45729a 892int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 893{
0f18b462 894 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 895 int ret = 0;
0f18b462 896
0f18b462
JK		 897 spin_lock(&sbi->inode_lock[DIRTY_META]);
898 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 899 ret = 1;
900 } else {
901 set_inode_flag(inode, FI_DIRTY_INODE);
902 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 903 }
7c45729a
JK		 904 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
905 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 906 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 907 inc_page_count(sbi, F2FS_DIRTY_IMETA);
908 }
338bbfa0 909 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 910 return ret;
0f18b462
JK		 911}
912
913void f2fs_inode_synced(struct inode *inode)
914{
915 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
916
917 spin_lock(&sbi->inode_lock[DIRTY_META]);
918 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
919 spin_unlock(&sbi->inode_lock[DIRTY_META]);
920 return;
921 }
7c45729a
JK		 922 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
923 list_del_init(&F2FS_I(inode)->gdirty_list);
924 dec_page_count(sbi, F2FS_DIRTY_IMETA);
925 }
0f18b462 926 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 927 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 928 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 929 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 930}
931
b56ab837
JK		 932/*
933 * f2fs_dirty_inode() is called from __mark_inode_dirty()
934 *
935 * We should call set_dirty_inode to write the dirty inode through write_inode.
936 */
937static void f2fs_dirty_inode(struct inode *inode, int flags)
938{
939 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
940
941 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
942 inode->i_ino == F2FS_META_INO(sbi))
943 return;
944
945 if (flags == I_DIRTY_TIME)
946 return;
947
948 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
949 clear_inode_flag(inode, FI_AUTO_RECOVER);
950
7c45729a 951 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 952}
953
aff063e2
JK		 954static void f2fs_i_callback(struct rcu_head *head)
955{
956 struct inode *inode = container_of(head, struct inode, i_rcu);
957 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
958}
959
25ca923b 960static void f2fs_destroy_inode(struct inode *inode)
aff063e2
JK		 961{
962 call_rcu(&inode->i_rcu, f2fs_i_callback);
963}
964
523be8a6
JK		 965static void destroy_percpu_info(struct f2fs_sb_info *sbi)
966{
41382ec4 967 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 968 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 969}
970
3c62be17
JK		 971static void destroy_device_list(struct f2fs_sb_info *sbi)
972{
973 int i;
974
975 for (i = 0; i < sbi->s_ndevs; i++) {
976 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
977#ifdef CONFIG_BLK_DEV_ZONED
978 kfree(FDEV(i).blkz_type);
979#endif
980 }
981 kfree(sbi->devs);
982}
983
aff063e2
JK		 984static void f2fs_put_super(struct super_block *sb)
985{
986 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 987 int i;
cf5c759f 988 bool dropped;
aff063e2 989
0abd675e 990 f2fs_quota_off_umount(sb);
aff063e2 991
2658e50d
JK		 992 /* prevent remaining shrinker jobs */
993 mutex_lock(&sbi->umount_mutex);
994
85dc2f2c
JK		 995 /*
996 * We don't need to do checkpoint when superblock is clean.
997 * But, the previous checkpoint was not done by umount, it needs to do
998 * clean checkpoint again.
999 */
caf0047e 1000 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
aaec2b1d 1001 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
75ab4cb8
JK		 1002 struct cp_control cpc = {
1003 .reason = CP_UMOUNT,
1004 };
1005 write_checkpoint(sbi, &cpc);
1006 }
aff063e2 1007
4e6a8d9b 1008 /* be sure to wait for any on-going discard commands */
cf5c759f 1009 dropped = f2fs_wait_discard_bios(sbi);
4e6a8d9b 1010
cf5c759f 1011 if (f2fs_discard_en(sbi) && !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1012 struct cp_control cpc = {
1013 .reason = CP_UMOUNT | CP_TRIMMED,
1014 };
1015 write_checkpoint(sbi, &cpc);
1016 }
1017
eca616f8
JK		 1018 /* write_checkpoint can update stat informaion */
1019 f2fs_destroy_stats(sbi);
1020
cf779cab
JK		 1021 /*
1022 * normally superblock is clean, so we need to release this.
1023 * In addition, EIO will skip do checkpoint, we need this as well.
1024 */
74ef9241 1025 release_ino_entry(sbi, true);
6f12ac25 1026
2658e50d
JK		 1027 f2fs_leave_shrinker(sbi);
1028 mutex_unlock(&sbi->umount_mutex);
1029
17c19120 1030 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1031 f2fs_flush_merged_writes(sbi);
17c19120 1032
aff063e2
JK		 1033 iput(sbi->node_inode);
1034 iput(sbi->meta_inode);
1035
1036 /* destroy f2fs internal modules */
1037 destroy_node_manager(sbi);
1038 destroy_segment_manager(sbi);
1039
1040 kfree(sbi->ckpt);
a398101a 1041
dc6b2055 1042 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1043
1044 sb->s_fs_info = NULL;
43b6573b
KM		 1045 if (sbi->s_chksum_driver)
1046 crypto_free_shash(sbi->s_chksum_driver);
b39f0de2 1047 kfree(sbi->raw_super);
523be8a6 1048
3c62be17 1049 destroy_device_list(sbi);
b6895e8f 1050 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1051#ifdef CONFIG_QUOTA
1052 for (i = 0; i < MAXQUOTAS; i++)
63189b78 1053 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1054#endif
523be8a6 1055 destroy_percpu_info(sbi);
a912b54d
JK		 1056 for (i = 0; i < NR_PAGE_TYPE; i++)
1057 kfree(sbi->write_io[i]);
aff063e2
JK		 1058 kfree(sbi);
1059}
1060
1061int f2fs_sync_fs(struct super_block *sb, int sync)
1062{
1063 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1064 int err = 0;
aff063e2 1065
1f227a3e
JK		 1066 if (unlikely(f2fs_cp_error(sbi)))
1067 return 0;
1068
a2a4a7e4
NJ		 1069 trace_f2fs_sync_fs(sb, sync);
1070
4b2414d0
CY		 1071 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1072 return -EAGAIN;
1073
b7473754 1074 if (sync) {
d5053a34
JK		 1075 struct cp_control cpc;
1076
119ee914
JK		 1077 cpc.reason = __get_cp_reason(sbi);
1078
b7473754 1079 mutex_lock(&sbi->gc_mutex);
c34f42e2 1080 err = write_checkpoint(sbi, &cpc);
b7473754 1081 mutex_unlock(&sbi->gc_mutex);
b7473754 1082 }
05ca3632 1083 f2fs_trace_ios(NULL, 1);
aff063e2 1084
c34f42e2 1085 return err;
aff063e2
JK		 1086}
1087
d6212a5f
CL		 1088static int f2fs_freeze(struct super_block *sb)
1089{
77888c1e 1090 if (f2fs_readonly(sb))
d6212a5f
CL		 1091 return 0;
1092
b4b9d34c
JK		 1093 /* IO error happened before */
1094 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1095 return -EIO;
1096
1097 /* must be clean, since sync_filesystem() was already called */
1098 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1099 return -EINVAL;
1100 return 0;
d6212a5f
CL		 1101}
1102
1103static int f2fs_unfreeze(struct super_block *sb)
1104{
1105 return 0;
1106}
1107
ddc34e32
CY		 1108#ifdef CONFIG_QUOTA
1109static int f2fs_statfs_project(struct super_block *sb,
1110 kprojid_t projid, struct kstatfs *buf)
1111{
1112 struct kqid qid;
1113 struct dquot *dquot;
1114 u64 limit;
1115 u64 curblock;
1116
1117 qid = make_kqid_projid(projid);
1118 dquot = dqget(sb, qid);
1119 if (IS_ERR(dquot))
1120 return PTR_ERR(dquot);
1121 spin_lock(&dq_data_lock);
1122
1123 limit = (dquot->dq_dqb.dqb_bsoftlimit ?
1124 dquot->dq_dqb.dqb_bsoftlimit :
1125 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
1126 if (limit && buf->f_blocks > limit) {
1127 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1128 buf->f_blocks = limit;
1129 buf->f_bfree = buf->f_bavail =
1130 (buf->f_blocks > curblock) ?
1131 (buf->f_blocks - curblock) : 0;
1132 }
1133
1134 limit = dquot->dq_dqb.dqb_isoftlimit ?
1135 dquot->dq_dqb.dqb_isoftlimit :
1136 dquot->dq_dqb.dqb_ihardlimit;
1137 if (limit && buf->f_files > limit) {
1138 buf->f_files = limit;
1139 buf->f_ffree =
1140 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1141 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1142 }
1143
1144 spin_unlock(&dq_data_lock);
1145 dqput(dquot);
1146 return 0;
1147}
1148#endif
1149
aff063e2
JK		 1150static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1151{
1152 struct super_block *sb = dentry->d_sb;
1153 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1154 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1155 block_t total_count, user_block_count, start_count;
0cc091d0 1156 u64 avail_node_count;
aff063e2
JK		 1157
1158 total_count = le64_to_cpu(sbi->raw_super->block_count);
1159 user_block_count = sbi->user_block_count;
1160 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1161 buf->f_type = F2FS_SUPER_MAGIC;
1162 buf->f_bsize = sbi->blocksize;
1163
1164 buf->f_blocks = total_count - start_count;
f66c027e 1165 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1166 sbi->current_reserved_blocks;
63189b78
CY		 1167 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1168 buf->f_bavail = buf->f_bfree -
1169 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1170 else
1171 buf->f_bavail = 0;
aff063e2 1172
292c196a
CY		 1173 avail_node_count = sbi->total_node_count - sbi->nquota_files -
1174 F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1175
1176 if (avail_node_count > user_block_count) {
1177 buf->f_files = user_block_count;
1178 buf->f_ffree = buf->f_bavail;
1179 } else {
1180 buf->f_files = avail_node_count;
1181 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1182 buf->f_bavail);
1183 }
aff063e2 1184
5a20d339 1185 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1186 buf->f_fsid.val[0] = (u32)id;
1187 buf->f_fsid.val[1] = (u32)(id >> 32);
1188
ddc34e32
CY		 1189#ifdef CONFIG_QUOTA
1190 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1191 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1192 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1193 }
1194#endif
aff063e2
JK		 1195 return 0;
1196}
1197
4b2414d0
CY		 1198static inline void f2fs_show_quota_options(struct seq_file *seq,
1199 struct super_block *sb)
1200{
1201#ifdef CONFIG_QUOTA
1202 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1203
63189b78 1204 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1205 char *fmtname = "";
1206
63189b78 1207 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1208 case QFMT_VFS_OLD:
1209 fmtname = "vfsold";
1210 break;
1211 case QFMT_VFS_V0:
1212 fmtname = "vfsv0";
1213 break;
1214 case QFMT_VFS_V1:
1215 fmtname = "vfsv1";
1216 break;
1217 }
1218 seq_printf(seq, ",jqfmt=%s", fmtname);
1219 }
1220
63189b78
CY		 1221 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1222 seq_show_option(seq, "usrjquota",
1223 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1224
63189b78
CY		 1225 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1226 seq_show_option(seq, "grpjquota",
1227 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1228
63189b78
CY		 1229 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1230 seq_show_option(seq, "prjjquota",
1231 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1232#endif
1233}
1234
aff063e2
JK		 1235static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1236{
1237 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1238
6aefd93b
JK		 1239 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1240 if (test_opt(sbi, FORCE_FG_GC))
1241 seq_printf(seq, ",background_gc=%s", "sync");
1242 else
1243 seq_printf(seq, ",background_gc=%s", "on");
1244 } else {
696c018c 1245 seq_printf(seq, ",background_gc=%s", "off");
6aefd93b 1246 }
aff063e2
JK		 1247 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1248 seq_puts(seq, ",disable_roll_forward");
1249 if (test_opt(sbi, DISCARD))
1250 seq_puts(seq, ",discard");
1251 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1252 seq_puts(seq, ",no_heap");
1253 else
1254 seq_puts(seq, ",heap");
aff063e2
JK		 1255#ifdef CONFIG_F2FS_FS_XATTR
1256 if (test_opt(sbi, XATTR_USER))
1257 seq_puts(seq, ",user_xattr");
1258 else
1259 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1260 if (test_opt(sbi, INLINE_XATTR))
1261 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1262 else
1263 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1264 if (test_opt(sbi, INLINE_XATTR_SIZE))
1265 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1266 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1267#endif
1268#ifdef CONFIG_F2FS_FS_POSIX_ACL
1269 if (test_opt(sbi, POSIX_ACL))
1270 seq_puts(seq, ",acl");
1271 else
1272 seq_puts(seq, ",noacl");
1273#endif
1274 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1275 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1276 if (test_opt(sbi, INLINE_DATA))
1277 seq_puts(seq, ",inline_data");
75342797
WL		 1278 else
1279 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1280 if (test_opt(sbi, INLINE_DENTRY))
1281 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1282 else
1283 seq_puts(seq, ",noinline_dentry");
b270ad6f 1284 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1285 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1286 if (test_opt(sbi, NOBARRIER))
1287 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1288 if (test_opt(sbi, FASTBOOT))
1289 seq_puts(seq, ",fastboot");
89672159
CY		 1290 if (test_opt(sbi, EXTENT_CACHE))
1291 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1292 else
1293 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1294 if (test_opt(sbi, DATA_FLUSH))
1295 seq_puts(seq, ",data_flush");
36abef4e
JK		 1296
1297 seq_puts(seq, ",mode=");
1298 if (test_opt(sbi, ADAPTIVE))
1299 seq_puts(seq, "adaptive");
1300 else if (test_opt(sbi, LFS))
1301 seq_puts(seq, "lfs");
63189b78 1302 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1303 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1304 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1305 F2FS_OPTION(sbi).root_reserved_blocks,
1306 from_kuid_munged(&init_user_ns,
1307 F2FS_OPTION(sbi).s_resuid),
1308 from_kgid_munged(&init_user_ns,
1309 F2FS_OPTION(sbi).s_resgid));
ec91538d
JK		 1310 if (F2FS_IO_SIZE_BITS(sbi))
1311 seq_printf(seq, ",io_size=%uKB", F2FS_IO_SIZE_KB(sbi));
0cc0dec2
KX		 1312#ifdef CONFIG_F2FS_FAULT_INJECTION
1313 if (test_opt(sbi, FAULT_INJECTION))
44529f89 1314 seq_printf(seq, ",fault_injection=%u",
63189b78 1315 F2FS_OPTION(sbi).fault_info.inject_rate);
0cc0dec2 1316#endif
0abd675e 1317#ifdef CONFIG_QUOTA
4b2414d0
CY		 1318 if (test_opt(sbi, QUOTA))
1319 seq_puts(seq, ",quota");
0abd675e
CY		 1320 if (test_opt(sbi, USRQUOTA))
1321 seq_puts(seq, ",usrquota");
1322 if (test_opt(sbi, GRPQUOTA))
1323 seq_puts(seq, ",grpquota");
5c57132e
CY		 1324 if (test_opt(sbi, PRJQUOTA))
1325 seq_puts(seq, ",prjquota");
0cc0dec2 1326#endif
4b2414d0 1327 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1328 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1329 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1330 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1331 seq_printf(seq, ",whint_mode=%s", "fs-based");
ff62af20
SY		 1332#ifdef CONFIG_F2FS_FS_ENCRYPTION
1333 if (F2FS_OPTION(sbi).test_dummy_encryption)
1334 seq_puts(seq, ",test_dummy_encryption");
1335#endif
aff063e2 1336
63189b78 1337 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1338 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1339 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1340 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1341
63189b78 1342 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1343 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1344 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1345 seq_printf(seq, ",fsync_mode=%s", "strict");
aff063e2
JK		 1346 return 0;
1347}
1348
498c5e9f
YH		 1349static void default_options(struct f2fs_sb_info *sbi)
1350{
1351 /* init some FS parameters */
63189b78
CY		 1352 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1353 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1354 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1355 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1356 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1357 F2FS_OPTION(sbi).test_dummy_encryption = false;
782911f4 1358 sbi->readdir_ra = 1;
498c5e9f
YH		 1359
1360 set_opt(sbi, BG_GC);
39133a50 1361 set_opt(sbi, INLINE_XATTR);
498c5e9f 1362 set_opt(sbi, INLINE_DATA);
97c1794a 1363 set_opt(sbi, INLINE_DENTRY);
3e72f721 1364 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1365 set_opt(sbi, NOHEAP);
1751e8a6 1366 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1367 set_opt(sbi, FLUSH_MERGE);
ccd31cb2 1368 if (f2fs_sb_has_blkzoned(sbi->sb)) {
52763a4b
JK		 1369 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1370 set_opt(sbi, DISCARD);
1371 } else {
1372 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
1373 }
498c5e9f
YH		 1374
1375#ifdef CONFIG_F2FS_FS_XATTR
1376 set_opt(sbi, XATTR_USER);
1377#endif
1378#ifdef CONFIG_F2FS_FS_POSIX_ACL
1379 set_opt(sbi, POSIX_ACL);
1380#endif
36dbd328
CY		 1381
1382#ifdef CONFIG_F2FS_FAULT_INJECTION
1383 f2fs_build_fault_attr(sbi, 0);
1384#endif
498c5e9f
YH		 1385}
1386
ea676733
JK		 1387#ifdef CONFIG_QUOTA
1388static int f2fs_enable_quotas(struct super_block *sb);
1389#endif
696c018c
NJ		 1390static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1391{
1392 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1393 struct f2fs_mount_info org_mount_opt;
0abd675e 1394 unsigned long old_sb_flags;
63189b78 1395 int err;
876dc59e
GZ		 1396 bool need_restart_gc = false;
1397 bool need_stop_gc = false;
9cd81ce3 1398 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4b2414d0 1399#ifdef CONFIG_QUOTA
4b2414d0
CY		 1400 int i, j;
1401#endif
696c018c
NJ		 1402
1403 /*
1404 * Save the old mount options in case we
1405 * need to restore them.
1406 */
1407 org_mount_opt = sbi->mount_opt;
0abd675e 1408 old_sb_flags = sb->s_flags;
696c018c 1409
4b2414d0 1410#ifdef CONFIG_QUOTA
63189b78 1411 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1412 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1413 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1414 org_mount_opt.s_qf_names[i] =
1415 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1416 GFP_KERNEL);
1417 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1418 for (j = 0; j < i; j++)
63189b78 1419 kfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1420 return -ENOMEM;
1421 }
1422 } else {
63189b78 1423 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1424 }
1425 }
1426#endif
1427
df728b0f 1428 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1429 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f
JK		 1430 err = f2fs_commit_super(sbi, false);
1431 f2fs_msg(sb, KERN_INFO,
1432 "Try to recover all the superblocks, ret: %d", err);
1433 if (!err)
1434 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1435 }
1436
498c5e9f 1437 default_options(sbi);
26666c8a 1438
696c018c
NJ		 1439 /* parse mount options */
1440 err = parse_options(sb, data);
1441 if (err)
1442 goto restore_opts;
1443
1444 /*
1445 * Previous and new state of filesystem is RO,
876dc59e 1446 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1447 */
1751e8a6 1448 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1449 goto skip;
1450
ea676733 1451#ifdef CONFIG_QUOTA
1751e8a6 1452 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1453 err = dquot_suspend(sb, -1);
1454 if (err < 0)
1455 goto restore_opts;
6279398d 1456 } else if (f2fs_readonly(sb) && !(*flags & MS_RDONLY)) {
0abd675e 1457 /* dquot_resume needs RW */
1751e8a6 1458 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1459 if (sb_any_quota_suspended(sb)) {
1460 dquot_resume(sb, -1);
1461 } else if (f2fs_sb_has_quota_ino(sb)) {
1462 err = f2fs_enable_quotas(sb);
1463 if (err)
1464 goto restore_opts;
1465 }
0abd675e 1466 }
ea676733 1467#endif
9cd81ce3
CY		 1468 /* disallow enable/disable extent_cache dynamically */
1469 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1470 err = -EINVAL;
1471 f2fs_msg(sbi->sb, KERN_WARNING,
1472 "switch extent_cache option is not allowed");
1473 goto restore_opts;
1474 }
1475
696c018c
NJ		 1476 /*
1477 * We stop the GC thread if FS is mounted as RO
1478 * or if background_gc = off is passed in mount
1479 * option. Also sync the filesystem.
1480 */
1751e8a6 1481 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
696c018c
NJ		 1482 if (sbi->gc_thread) {
1483 stop_gc_thread(sbi);
876dc59e 1484 need_restart_gc = true;
696c018c 1485 }
aba291b3 1486 } else if (!sbi->gc_thread) {
696c018c
NJ		 1487 err = start_gc_thread(sbi);
1488 if (err)
1489 goto restore_opts;
876dc59e
GZ		 1490 need_stop_gc = true;
1491 }
1492
63189b78
CY		 1493 if (*flags & SB_RDONLY ||
1494 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1495 writeback_inodes_sb(sb, WB_REASON_SYNC);
1496 sync_inodes_sb(sb);
1497
1498 set_sbi_flag(sbi, SBI_IS_DIRTY);
1499 set_sbi_flag(sbi, SBI_IS_CLOSE);
1500 f2fs_sync_fs(sb, 1);
1501 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1502 }
1503
876dc59e
GZ		 1504 /*
1505 * We stop issue flush thread if FS is mounted as RO
1506 * or if flush_merge is not passed in mount option.
1507 */
1751e8a6 1508 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d
JK		 1509 clear_opt(sbi, FLUSH_MERGE);
1510 destroy_flush_cmd_control(sbi, false);
1511 } else {
2163d198
GZ		 1512 err = create_flush_cmd_control(sbi);
1513 if (err)
a688b9d9 1514 goto restore_gc;
696c018c
NJ		 1515 }
1516skip:
4b2414d0
CY		 1517#ifdef CONFIG_QUOTA
1518 /* Release old quota file names */
1519 for (i = 0; i < MAXQUOTAS; i++)
63189b78 1520 kfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1521#endif
696c018c 1522 /* Update the POSIXACL Flag */
1751e8a6
LT		 1523 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1524 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1525
7e65be49 1526 limit_reserve_root(sbi);
696c018c 1527 return 0;
876dc59e
GZ		 1528restore_gc:
1529 if (need_restart_gc) {
1530 if (start_gc_thread(sbi))
1531 f2fs_msg(sbi->sb, KERN_WARNING,
e1c42045 1532 "background gc thread has stopped");
876dc59e
GZ		 1533 } else if (need_stop_gc) {
1534 stop_gc_thread(sbi);
1535 }
696c018c 1536restore_opts:
4b2414d0 1537#ifdef CONFIG_QUOTA
63189b78 1538 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1539 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1540 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
1541 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1542 }
1543#endif
696c018c 1544 sbi->mount_opt = org_mount_opt;
0abd675e 1545 sb->s_flags = old_sb_flags;
696c018c
NJ		 1546 return err;
1547}
1548
0abd675e
CY		 1549#ifdef CONFIG_QUOTA
1550/* Read data from quotafile */
1551static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1552 size_t len, loff_t off)
1553{
1554 struct inode *inode = sb_dqopt(sb)->files[type];
1555 struct address_space *mapping = inode->i_mapping;
1556 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1557 int offset = off & (sb->s_blocksize - 1);
1558 int tocopy;
1559 size_t toread;
1560 loff_t i_size = i_size_read(inode);
1561 struct page *page;
1562 char *kaddr;
1563
1564 if (off > i_size)
1565 return 0;
1566
1567 if (off + len > i_size)
1568 len = i_size - off;
1569 toread = len;
1570 while (toread > 0) {
1571 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1572repeat:
02117b8a 1573 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1574 if (IS_ERR(page)) {
1575 if (PTR_ERR(page) == -ENOMEM) {
1576 congestion_wait(BLK_RW_ASYNC, HZ/50);
1577 goto repeat;
1578 }
0abd675e 1579 return PTR_ERR(page);
4e46a023 1580 }
0abd675e
CY		 1581
1582 lock_page(page);
1583
1584 if (unlikely(page->mapping != mapping)) {
1585 f2fs_put_page(page, 1);
1586 goto repeat;
1587 }
1588 if (unlikely(!PageUptodate(page))) {
1589 f2fs_put_page(page, 1);
1590 return -EIO;
1591 }
1592
1593 kaddr = kmap_atomic(page);
1594 memcpy(data, kaddr + offset, tocopy);
1595 kunmap_atomic(kaddr);
1596 f2fs_put_page(page, 1);
1597
1598 offset = 0;
1599 toread -= tocopy;
1600 data += tocopy;
1601 blkidx++;
1602 }
1603 return len;
1604}
1605
1606/* Write to quotafile */
1607static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1608 const char *data, size_t len, loff_t off)
1609{
1610 struct inode *inode = sb_dqopt(sb)->files[type];
1611 struct address_space *mapping = inode->i_mapping;
1612 const struct address_space_operations *a_ops = mapping->a_ops;
1613 int offset = off & (sb->s_blocksize - 1);
1614 size_t towrite = len;
1615 struct page *page;
1616 char *kaddr;
1617 int err = 0;
1618 int tocopy;
1619
1620 while (towrite > 0) {
1621 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1622 towrite);
4e46a023 1623retry:
0abd675e
CY		 1624 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1625 &page, NULL);
4e46a023
JK		 1626 if (unlikely(err)) {
1627 if (err == -ENOMEM) {
1628 congestion_wait(BLK_RW_ASYNC, HZ/50);
1629 goto retry;
1630 }
0abd675e 1631 break;
4e46a023 1632 }
0abd675e
CY		 1633
1634 kaddr = kmap_atomic(page);
1635 memcpy(kaddr + offset, data, tocopy);
1636 kunmap_atomic(kaddr);
1637 flush_dcache_page(page);
1638
1639 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1640 page, NULL);
1641 offset = 0;
1642 towrite -= tocopy;
1643 off += tocopy;
1644 data += tocopy;
1645 cond_resched();
1646 }
1647
1648 if (len == towrite)
6e5b5d41 1649 return err;
0abd675e
CY		 1650 inode->i_mtime = inode->i_ctime = current_time(inode);
1651 f2fs_mark_inode_dirty_sync(inode, false);
1652 return len - towrite;
1653}
1654
1655static struct dquot **f2fs_get_dquots(struct inode *inode)
1656{
1657 return F2FS_I(inode)->i_dquot;
1658}
1659
1660static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1661{
1662 return &F2FS_I(inode)->i_reserved_quota;
1663}
1664
4b2414d0
CY		 1665static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1666{
63189b78
CY		 1667 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1668 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1669}
1670
ea676733 1671int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1672{
ea676733
JK		 1673 int enabled = 0;
1674 int i, err;
1675
1676 if (f2fs_sb_has_quota_ino(sbi->sb) && rdonly) {
1677 err = f2fs_enable_quotas(sbi->sb);
1678 if (err) {
1679 f2fs_msg(sbi->sb, KERN_ERR,
1680 "Cannot turn on quota_ino: %d", err);
1681 return 0;
1682 }
1683 return 1;
1684 }
4b2414d0
CY		 1685
1686 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 1687 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 1688 err = f2fs_quota_on_mount(sbi, i);
1689 if (!err) {
1690 enabled = 1;
1691 continue;
1692 }
1693 f2fs_msg(sbi->sb, KERN_ERR,
1694 "Cannot turn on quotas: %d on %d", err, i);
4b2414d0
CY		 1695 }
1696 }
ea676733
JK		 1697 return enabled;
1698}
1699
1700static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1701 unsigned int flags)
1702{
1703 struct inode *qf_inode;
1704 unsigned long qf_inum;
1705 int err;
1706
1707 BUG_ON(!f2fs_sb_has_quota_ino(sb));
1708
1709 qf_inum = f2fs_qf_ino(sb, type);
1710 if (!qf_inum)
1711 return -EPERM;
1712
1713 qf_inode = f2fs_iget(sb, qf_inum);
1714 if (IS_ERR(qf_inode)) {
1715 f2fs_msg(sb, KERN_ERR,
1716 "Bad quota inode %u:%lu", type, qf_inum);
1717 return PTR_ERR(qf_inode);
1718 }
1719
1720 /* Don't account quota for quota files to avoid recursion */
1721 qf_inode->i_flags |= S_NOQUOTA;
1722 err = dquot_enable(qf_inode, type, format_id, flags);
1723 iput(qf_inode);
1724 return err;
1725}
1726
1727static int f2fs_enable_quotas(struct super_block *sb)
1728{
1729 int type, err = 0;
1730 unsigned long qf_inum;
1731 bool quota_mopt[MAXQUOTAS] = {
1732 test_opt(F2FS_SB(sb), USRQUOTA),
1733 test_opt(F2FS_SB(sb), GRPQUOTA),
1734 test_opt(F2FS_SB(sb), PRJQUOTA),
1735 };
1736
1737 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY;
1738 for (type = 0; type < MAXQUOTAS; type++) {
1739 qf_inum = f2fs_qf_ino(sb, type);
1740 if (qf_inum) {
1741 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1742 DQUOT_USAGE_ENABLED |
1743 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1744 if (err) {
1745 f2fs_msg(sb, KERN_ERR,
1746 "Failed to enable quota tracking "
1747 "(type=%d, err=%d). Please run "
1748 "fsck to fix.", type, err);
1749 for (type--; type >= 0; type--)
1750 dquot_quota_off(sb, type);
1751 return err;
1752 }
4b2414d0
CY		 1753 }
1754 }
ea676733 1755 return 0;
4b2414d0
CY		 1756}
1757
0abd675e
CY		 1758static int f2fs_quota_sync(struct super_block *sb, int type)
1759{
1760 struct quota_info *dqopt = sb_dqopt(sb);
1761 int cnt;
1762 int ret;
1763
1764 ret = dquot_writeback_dquots(sb, type);
1765 if (ret)
1766 return ret;
1767
1768 /*
1769 * Now when everything is written we can discard the pagecache so
1770 * that userspace sees the changes.
1771 */
1772 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
1773 if (type != -1 && cnt != type)
1774 continue;
1775 if (!sb_has_quota_active(sb, cnt))
1776 continue;
1777
1778 ret = filemap_write_and_wait(dqopt->files[cnt]->i_mapping);
1779 if (ret)
1780 return ret;
1781
1782 inode_lock(dqopt->files[cnt]);
1783 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
1784 inode_unlock(dqopt->files[cnt]);
1785 }
1786 return 0;
1787}
1788
1789static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
1790 const struct path *path)
1791{
1792 struct inode *inode;
1793 int err;
1794
9a20d391 1795 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 1796 if (err)
1797 return err;
1798
1799 err = dquot_quota_on(sb, type, format_id, path);
1800 if (err)
1801 return err;
1802
1803 inode = d_inode(path->dentry);
1804
1805 inode_lock(inode);
59c84408 1806 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
0abd675e
CY		 1807 inode_set_flags(inode, S_NOATIME | S_IMMUTABLE,
1808 S_NOATIME | S_IMMUTABLE);
1809 inode_unlock(inode);
1810 f2fs_mark_inode_dirty_sync(inode, false);
1811
1812 return 0;
1813}
1814
1815static int f2fs_quota_off(struct super_block *sb, int type)
1816{
1817 struct inode *inode = sb_dqopt(sb)->files[type];
1818 int err;
1819
1820 if (!inode || !igrab(inode))
1821 return dquot_quota_off(sb, type);
1822
9a20d391 1823 f2fs_quota_sync(sb, type);
0abd675e
CY		 1824
1825 err = dquot_quota_off(sb, type);
ea676733 1826 if (err || f2fs_sb_has_quota_ino(sb))
0abd675e
CY		 1827 goto out_put;
1828
1829 inode_lock(inode);
59c84408 1830 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
0abd675e
CY		 1831 inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE);
1832 inode_unlock(inode);
1833 f2fs_mark_inode_dirty_sync(inode, false);
1834out_put:
1835 iput(inode);
1836 return err;
1837}
1838
4b2414d0 1839void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 1840{
1841 int type;
1842
1843 for (type = 0; type < MAXQUOTAS; type++)
1844 f2fs_quota_off(sb, type);
1845}
1846
94b1e10e 1847static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 1848{
1849 *projid = F2FS_I(inode)->i_projid;
1850 return 0;
1851}
1852
0abd675e
CY		 1853static const struct dquot_operations f2fs_quota_operations = {
1854 .get_reserved_space = f2fs_get_reserved_space,
1855 .write_dquot = dquot_commit,
1856 .acquire_dquot = dquot_acquire,
1857 .release_dquot = dquot_release,
1858 .mark_dirty = dquot_mark_dquot_dirty,
1859 .write_info = dquot_commit_info,
1860 .alloc_dquot = dquot_alloc,
1861 .destroy_dquot = dquot_destroy,
5c57132e 1862 .get_projid = f2fs_get_projid,
0abd675e
CY		 1863 .get_next_id = dquot_get_next_id,
1864};
1865
1866static const struct quotactl_ops f2fs_quotactl_ops = {
1867 .quota_on = f2fs_quota_on,
1868 .quota_off = f2fs_quota_off,
1869 .quota_sync = f2fs_quota_sync,
1870 .get_state = dquot_get_state,
1871 .set_info = dquot_set_dqinfo,
1872 .get_dqblk = dquot_get_dqblk,
1873 .set_dqblk = dquot_set_dqblk,
1874 .get_nextdqblk = dquot_get_next_dqblk,
1875};
1876#else
4b2414d0 1877void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 1878{
1879}
1880#endif
1881
f62fc9f9 1882static const struct super_operations f2fs_sops = {
aff063e2 1883 .alloc_inode = f2fs_alloc_inode,
531ad7d5 1884 .drop_inode = f2fs_drop_inode,
aff063e2
JK		 1885 .destroy_inode = f2fs_destroy_inode,
1886 .write_inode = f2fs_write_inode,
b3783873 1887 .dirty_inode = f2fs_dirty_inode,
aff063e2 1888 .show_options = f2fs_show_options,
0abd675e
CY		 1889#ifdef CONFIG_QUOTA
1890 .quota_read = f2fs_quota_read,
1891 .quota_write = f2fs_quota_write,
1892 .get_dquots = f2fs_get_dquots,
1893#endif
aff063e2
JK		 1894 .evict_inode = f2fs_evict_inode,
1895 .put_super = f2fs_put_super,
1896 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 1897 .freeze_fs = f2fs_freeze,
1898 .unfreeze_fs = f2fs_unfreeze,
aff063e2 1899 .statfs = f2fs_statfs,
696c018c 1900 .remount_fs = f2fs_remount,
aff063e2
JK		 1901};
1902
0b81d077
JK		 1903#ifdef CONFIG_F2FS_FS_ENCRYPTION
1904static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
1905{
1906 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
1907 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
1908 ctx, len, NULL);
1909}
1910
1911static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
1912 void *fs_data)
1913{
b7c409de
SY		 1914 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1915
1916 /*
1917 * Encrypting the root directory is not allowed because fsck
1918 * expects lost+found directory to exist and remain unencrypted
1919 * if LOST_FOUND feature is enabled.
1920 *
1921 */
1922 if (f2fs_sb_has_lost_found(sbi->sb) &&
1923 inode->i_ino == F2FS_ROOT_INO(sbi))
1924 return -EPERM;
1925
0b81d077
JK		 1926 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
1927 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
1928 ctx, len, fs_data, XATTR_CREATE);
1929}
1930
ff62af20
SY		 1931static bool f2fs_dummy_context(struct inode *inode)
1932{
1933 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
1934}
1935
0b81d077
JK		 1936static unsigned f2fs_max_namelen(struct inode *inode)
1937{
1938 return S_ISLNK(inode->i_mode) ?
1939 inode->i_sb->s_blocksize : F2FS_NAME_LEN;
1940}
1941
6f69f0ed 1942static const struct fscrypt_operations f2fs_cryptops = {
a5d431ef 1943 .key_prefix = "f2fs:",
0b81d077
JK		 1944 .get_context = f2fs_get_context,
1945 .set_context = f2fs_set_context,
ff62af20 1946 .dummy_context = f2fs_dummy_context,
0b81d077
JK		 1947 .empty_dir = f2fs_empty_dir,
1948 .max_namelen = f2fs_max_namelen,
1949};
0b81d077
JK		 1950#endif
1951
aff063e2
JK		 1952static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
1953 u64 ino, u32 generation)
1954{
1955 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1956 struct inode *inode;
1957
d6b7d4b3 1958 if (check_nid_range(sbi, ino))
910bb12d 1959 return ERR_PTR(-ESTALE);
aff063e2
JK		 1960
1961 /*
1962 * f2fs_iget isn't quite right if the inode is currently unallocated!
1963 * However f2fs_iget currently does appropriate checks to handle stale
1964 * inodes so everything is OK.
1965 */
1966 inode = f2fs_iget(sb, ino);
1967 if (IS_ERR(inode))
1968 return ERR_CAST(inode);
6bacf52f 1969 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 1970 /* we didn't find the right inode.. */
1971 iput(inode);
1972 return ERR_PTR(-ESTALE);
1973 }
1974 return inode;
1975}
1976
1977static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
1978 int fh_len, int fh_type)
1979{
1980 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
1981 f2fs_nfs_get_inode);
1982}
1983
1984static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
1985 int fh_len, int fh_type)
1986{
1987 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
1988 f2fs_nfs_get_inode);
1989}
1990
1991static const struct export_operations f2fs_export_ops = {
1992 .fh_to_dentry = f2fs_fh_to_dentry,
1993 .fh_to_parent = f2fs_fh_to_parent,
1994 .get_parent = f2fs_get_parent,
1995};
1996
e0afc4d6 1997static loff_t max_file_blocks(void)
aff063e2 1998{
7a2af766 1999 loff_t result = 0;
aff063e2
JK		 2000 loff_t leaf_count = ADDRS_PER_BLOCK;
2001
7a2af766
CY		 2002 /*
2003 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2004 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2005 * space in inode.i_addr, it will be more safe to reassign
2006 * result as zero.
2007 */
2008
aff063e2
JK		 2009 /* two direct node blocks */
2010 result += (leaf_count * 2);
2011
2012 /* two indirect node blocks */
2013 leaf_count *= NIDS_PER_BLOCK;
2014 result += (leaf_count * 2);
2015
2016 /* one double indirect node block */
2017 leaf_count *= NIDS_PER_BLOCK;
2018 result += leaf_count;
2019
aff063e2
JK		 2020 return result;
2021}
2022
fd694733
JK		 2023static int __f2fs_commit_super(struct buffer_head *bh,
2024 struct f2fs_super_block *super)
2025{
2026 lock_buffer(bh);
2027 if (super)
2028 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2029 set_buffer_dirty(bh);
2030 unlock_buffer(bh);
2031
2032 /* it's rare case, we can do fua all the time */
3adc5fcb 2033 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2034}
2035
df728b0f 2036static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2037 struct buffer_head *bh)
9a59b62f 2038{
fd694733
JK		 2039 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2040 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2041 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2042 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2043 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2044 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2045 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2046 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2047 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2048 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2049 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2050 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2051 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2052 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2053 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2054 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2055 u64 main_end_blkaddr = main_blkaddr +
2056 (segment_count_main << log_blocks_per_seg);
2057 u64 seg_end_blkaddr = segment0_blkaddr +
2058 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2059
2060 if (segment0_blkaddr != cp_blkaddr) {
2061 f2fs_msg(sb, KERN_INFO,
2062 "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2063 segment0_blkaddr, cp_blkaddr);
2064 return true;
2065 }
2066
2067 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2068 sit_blkaddr) {
2069 f2fs_msg(sb, KERN_INFO,
2070 "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2071 cp_blkaddr, sit_blkaddr,
2072 segment_count_ckpt << log_blocks_per_seg);
2073 return true;
2074 }
2075
2076 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2077 nat_blkaddr) {
2078 f2fs_msg(sb, KERN_INFO,
2079 "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2080 sit_blkaddr, nat_blkaddr,
2081 segment_count_sit << log_blocks_per_seg);
2082 return true;
2083 }
2084
2085 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2086 ssa_blkaddr) {
2087 f2fs_msg(sb, KERN_INFO,
2088 "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2089 nat_blkaddr, ssa_blkaddr,
2090 segment_count_nat << log_blocks_per_seg);
2091 return true;
2092 }
2093
2094 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2095 main_blkaddr) {
2096 f2fs_msg(sb, KERN_INFO,
2097 "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2098 ssa_blkaddr, main_blkaddr,
2099 segment_count_ssa << log_blocks_per_seg);
2100 return true;
2101 }
2102
fd694733 2103 if (main_end_blkaddr > seg_end_blkaddr) {
9a59b62f 2104 f2fs_msg(sb, KERN_INFO,
fd694733 2105 "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
9a59b62f 2106 main_blkaddr,
fd694733
JK		 2107 segment0_blkaddr +
2108 (segment_count << log_blocks_per_seg),
9a59b62f
CY		 2109 segment_count_main << log_blocks_per_seg);
2110 return true;
fd694733
JK		 2111 } else if (main_end_blkaddr < seg_end_blkaddr) {
2112 int err = 0;
2113 char *res;
2114
2115 /* fix in-memory information all the time */
2116 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2117 segment0_blkaddr) >> log_blocks_per_seg);
2118
2119 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2120 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2121 res = "internally";
2122 } else {
2123 err = __f2fs_commit_super(bh, NULL);
2124 res = err ? "failed" : "done";
2125 }
2126 f2fs_msg(sb, KERN_INFO,
2127 "Fix alignment : %s, start(%u) end(%u) block(%u)",
2128 res, main_blkaddr,
2129 segment0_blkaddr +
2130 (segment_count << log_blocks_per_seg),
2131 segment_count_main << log_blocks_per_seg);
2132 if (err)
2133 return true;
9a59b62f 2134 }
9a59b62f
CY		 2135 return false;
2136}
2137
df728b0f 2138static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2139 struct buffer_head *bh)
aff063e2 2140{
0cfe75c5
JK		 2141 block_t segment_count, segs_per_sec, secs_per_zone;
2142 block_t total_sections, blocks_per_seg;
fd694733
JK		 2143 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2144 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2145 struct super_block *sb = sbi->sb;
aff063e2
JK		 2146 unsigned int blocksize;
2147
a07ef784
NJ		 2148 if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) {
2149 f2fs_msg(sb, KERN_INFO,
2150 "Magic Mismatch, valid(0x%x) - read(0x%x)",
2151 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
aff063e2 2152 return 1;
a07ef784 2153 }
aff063e2 2154
5c9b4692 2155 /* Currently, support only 4KB page cache size */
09cbfeaf 2156 if (F2FS_BLKSIZE != PAGE_SIZE) {
5c9b4692 2157 f2fs_msg(sb, KERN_INFO,
14d7e9de 2158 "Invalid page_cache_size (%lu), supports only 4KB\n",
09cbfeaf 2159 PAGE_SIZE);
5c9b4692 2160 return 1;
2161 }
2162
aff063e2
JK		 2163 /* Currently, support only 4KB block size */
2164 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2165 if (blocksize != F2FS_BLKSIZE) {
a07ef784
NJ		 2166 f2fs_msg(sb, KERN_INFO,
2167 "Invalid blocksize (%u), supports only 4KB\n",
2168 blocksize);
aff063e2 2169 return 1;
a07ef784 2170 }
5c9b4692 2171
9a59b62f
CY		 2172 /* check log blocks per segment */
2173 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
2174 f2fs_msg(sb, KERN_INFO,
2175 "Invalid log blocks per segment (%u)\n",
2176 le32_to_cpu(raw_super->log_blocks_per_seg));
2177 return 1;
2178 }
2179
55cf9cb6
CY		 2180 /* Currently, support 512/1024/2048/4096 bytes sector size */
2181 if (le32_to_cpu(raw_super->log_sectorsize) >
2182 F2FS_MAX_LOG_SECTOR_SIZE ||
2183 le32_to_cpu(raw_super->log_sectorsize) <
2184 F2FS_MIN_LOG_SECTOR_SIZE) {
2185 f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)",
2186 le32_to_cpu(raw_super->log_sectorsize));
aff063e2 2187 return 1;
a07ef784 2188 }
55cf9cb6
CY		 2189 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2190 le32_to_cpu(raw_super->log_sectorsize) !=
2191 F2FS_MAX_LOG_SECTOR_SIZE) {
2192 f2fs_msg(sb, KERN_INFO,
2193 "Invalid log sectors per block(%u) log sectorsize(%u)",
2194 le32_to_cpu(raw_super->log_sectors_per_block),
2195 le32_to_cpu(raw_super->log_sectorsize));
aff063e2 2196 return 1;
a07ef784 2197 }
9a59b62f 2198
0cfe75c5
JK		 2199 segment_count = le32_to_cpu(raw_super->segment_count);
2200 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2201 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2202 total_sections = le32_to_cpu(raw_super->section_count);
2203
2204 /* blocks_per_seg should be 512, given the above check */
2205 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2206
2207 if (segment_count > F2FS_MAX_SEGMENT ||
2208 segment_count < F2FS_MIN_SEGMENTS) {
2209 f2fs_msg(sb, KERN_INFO,
2210 "Invalid segment count (%u)",
2211 segment_count);
2212 return 1;
2213 }
2214
2215 if (total_sections > segment_count ||
2216 total_sections < F2FS_MIN_SEGMENTS ||
2217 segs_per_sec > segment_count || !segs_per_sec) {
2218 f2fs_msg(sb, KERN_INFO,
2219 "Invalid segment/section count (%u, %u x %u)",
2220 segment_count, total_sections, segs_per_sec);
2221 return 1;
2222 }
2223
2224 if ((segment_count / segs_per_sec) < total_sections) {
2225 f2fs_msg(sb, KERN_INFO,
2226 "Small segment_count (%u < %u * %u)",
2227 segment_count, segs_per_sec, total_sections);
2228 return 1;
2229 }
2230
2231 if (segment_count > (le32_to_cpu(raw_super->block_count) >> 9)) {
2232 f2fs_msg(sb, KERN_INFO,
2233 "Wrong segment_count / block_count (%u > %u)",
2234 segment_count, le32_to_cpu(raw_super->block_count));
2235 return 1;
2236 }
2237
2238 if (secs_per_zone > total_sections) {
2239 f2fs_msg(sb, KERN_INFO,
2240 "Wrong secs_per_zone (%u > %u)",
2241 secs_per_zone, total_sections);
2242 return 1;
2243 }
2244 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2245 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2246 (le32_to_cpu(raw_super->extension_count) +
2247 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
2248 f2fs_msg(sb, KERN_INFO,
2249 "Corrupted extension count (%u + %u > %u)",
2250 le32_to_cpu(raw_super->extension_count),
2251 raw_super->hot_ext_count,
2252 F2FS_MAX_EXTENSION);
2253 return 1;
2254 }
2255
2256 if (le32_to_cpu(raw_super->cp_payload) >
2257 (blocks_per_seg - F2FS_CP_PACKS)) {
2258 f2fs_msg(sb, KERN_INFO,
2259 "Insane cp_payload (%u > %u)",
2260 le32_to_cpu(raw_super->cp_payload),
2261 blocks_per_seg - F2FS_CP_PACKS);
2262 return 1;
2263 }
2264
9a59b62f
CY		 2265 /* check reserved ino info */
2266 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2267 le32_to_cpu(raw_super->meta_ino) != 2 ||
2268 le32_to_cpu(raw_super->root_ino) != 3) {
2269 f2fs_msg(sb, KERN_INFO,
2270 "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2271 le32_to_cpu(raw_super->node_ino),
2272 le32_to_cpu(raw_super->meta_ino),
2273 le32_to_cpu(raw_super->root_ino));
2274 return 1;
2275 }
2276
2277 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2278 if (sanity_check_area_boundary(sbi, bh))
9a59b62f
CY		 2279 return 1;
2280
aff063e2
JK		 2281 return 0;
2282}
2283
984ec63c 2284int sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2285{
2286 unsigned int total, fsmeta;
577e3495
JK		 2287 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2288 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2289 unsigned int ovp_segments, reserved_segments;
15d3042a
JQ		 2290 unsigned int main_segs, blocks_per_seg;
2291 int i;
aff063e2
JK		 2292
2293 total = le32_to_cpu(raw_super->segment_count);
2294 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
2295 fsmeta += le32_to_cpu(raw_super->segment_count_sit);
2296 fsmeta += le32_to_cpu(raw_super->segment_count_nat);
2297 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2298 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2299
6bacf52f 2300 if (unlikely(fsmeta >= total))
aff063e2 2301 return 1;
577e3495 2302
2040fce8
JK		 2303 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2304 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2305
2306 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2307 ovp_segments == 0 || reserved_segments == 0)) {
2308 f2fs_msg(sbi->sb, KERN_ERR,
2309 "Wrong layout: check mkfs.f2fs version");
2310 return 1;
2311 }
2312
15d3042a
JQ		 2313 main_segs = le32_to_cpu(raw_super->segment_count_main);
2314 blocks_per_seg = sbi->blocks_per_seg;
2315
2316 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2317 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2318 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2319 return 1;
2320 }
2321 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2322 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2323 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2324 return 1;
2325 }
2326
1e968fdf 2327 if (unlikely(f2fs_cp_error(sbi))) {
577e3495
JK		 2328 f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck");
2329 return 1;
2330 }
aff063e2
JK		 2331 return 0;
2332}
2333
2334static void init_sb_info(struct f2fs_sb_info *sbi)
2335{
2336 struct f2fs_super_block *raw_super = sbi->raw_super;
e41e6d75 2337 int i, j;
aff063e2
JK		 2338
2339 sbi->log_sectors_per_block =
2340 le32_to_cpu(raw_super->log_sectors_per_block);
2341 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2342 sbi->blocksize = 1 << sbi->log_blocksize;
2343 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2344 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2345 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2346 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2347 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2348 sbi->total_node_count =
2349 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2350 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2351 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2352 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2353 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2354 sbi->cur_victim_sec = NULL_SECNO;
b1c57c1c 2355 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
aff063e2 2356
ab9fa662 2357 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2358 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2359 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
caf0047e 2360 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2361
35782b23
JK		 2362 for (i = 0; i < NR_COUNT_TYPE; i++)
2363 atomic_set(&sbi->nr_pages[i], 0);
2364
687de7f1
JK		 2365 atomic_set(&sbi->wb_sync_req, 0);
2366
2658e50d
JK		 2367 INIT_LIST_HEAD(&sbi->s_list);
2368 mutex_init(&sbi->umount_mutex);
e41e6d75
CY		 2369 for (i = 0; i < NR_PAGE_TYPE - 1; i++)
2370 for (j = HOT; j < NR_TEMP_TYPE; j++)
2371 mutex_init(&sbi->wio_mutex[i][j]);
107a805d 2372 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2373 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2374
2375 sbi->dirty_device = 0;
2376 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2377
846ae671 2378 init_rwsem(&sbi->sb_lock);
aff063e2
JK		 2379}
2380
523be8a6
JK		 2381static int init_percpu_info(struct f2fs_sb_info *sbi)
2382{
35782b23 2383 int err;
41382ec4 2384
513c5f37
JK		 2385 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2386 if (err)
2387 return err;
2388
2389 return percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2390 GFP_KERNEL);
523be8a6
JK		 2391}
2392
178053e2 2393#ifdef CONFIG_BLK_DEV_ZONED
3c62be17 2394static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2395{
3c62be17 2396 struct block_device *bdev = FDEV(devi).bdev;
178053e2
DLM		 2397 sector_t nr_sectors = bdev->bd_part->nr_sects;
2398 sector_t sector = 0;
2399 struct blk_zone *zones;
2400 unsigned int i, nr_zones;
2401 unsigned int n = 0;
2402 int err = -EIO;
2403
ccd31cb2 2404 if (!f2fs_sb_has_blkzoned(sbi->sb))
178053e2
DLM		 2405 return 0;
2406
3c62be17 2407 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 2408 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 2409 return -EINVAL;
f99e8648 2410 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 2411 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2412 __ilog2_u32(sbi->blocks_per_blkz))
2413 return -EINVAL;
178053e2 2414 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 2415 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2416 sbi->log_blocks_per_blkz;
f99e8648 2417 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 2418 FDEV(devi).nr_blkz++;
178053e2 2419
4e6aad29
CY		 2420 FDEV(devi).blkz_type = f2fs_kmalloc(sbi, FDEV(devi).nr_blkz,
2421 GFP_KERNEL);
3c62be17 2422 if (!FDEV(devi).blkz_type)
178053e2
DLM		 2423 return -ENOMEM;
2424
2425#define F2FS_REPORT_NR_ZONES 4096
2426
4e6aad29
CY		 2427 zones = f2fs_kzalloc(sbi, sizeof(struct blk_zone) *
2428 F2FS_REPORT_NR_ZONES, GFP_KERNEL);
178053e2
DLM		 2429 if (!zones)
2430 return -ENOMEM;
2431
2432 /* Get block zones type */
2433 while (zones && sector < nr_sectors) {
2434
2435 nr_zones = F2FS_REPORT_NR_ZONES;
2436 err = blkdev_report_zones(bdev, sector,
2437 zones, &nr_zones,
2438 GFP_KERNEL);
2439 if (err)
2440 break;
2441 if (!nr_zones) {
2442 err = -EIO;
2443 break;
2444 }
2445
2446 for (i = 0; i < nr_zones; i++) {
3c62be17 2447 FDEV(devi).blkz_type[n] = zones[i].type;
178053e2
DLM		 2448 sector += zones[i].len;
2449 n++;
2450 }
2451 }
2452
2453 kfree(zones);
2454
2455 return err;
2456}
2457#endif
2458
9076a75f
GZ		 2459/*
2460 * Read f2fs raw super block.
2b39e907
SL		 2461 * Because we have two copies of super block, so read both of them
2462 * to get the first valid one. If any one of them is broken, we pass
2463 * them recovery flag back to the caller.
9076a75f 2464 */
df728b0f 2465static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 2466 struct f2fs_super_block **raw_super,
e8240f65 2467 int *valid_super_block, int *recovery)
14d7e9de 2468{
df728b0f 2469 struct super_block *sb = sbi->sb;
2b39e907 2470 int block;
e8240f65 2471 struct buffer_head *bh;
fd694733 2472 struct f2fs_super_block *super;
da554e48 2473 int err = 0;
14d7e9de 2474
b39f0de2
YH		 2475 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2476 if (!super)
2477 return -ENOMEM;
2b39e907
SL		 2478
2479 for (block = 0; block < 2; block++) {
2480 bh = sb_bread(sb, block);
2481 if (!bh) {
2482 f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock",
9076a75f 2483 block + 1);
2b39e907
SL		 2484 err = -EIO;
2485 continue;
2486 }
14d7e9de 2487
2b39e907 2488 /* sanity checking of raw super */
df728b0f 2489 if (sanity_check_raw_super(sbi, bh)) {
2b39e907
SL		 2490 f2fs_msg(sb, KERN_ERR,
2491 "Can't find valid F2FS filesystem in %dth superblock",
2492 block + 1);
2493 err = -EINVAL;
2494 brelse(bh);
2495 continue;
2496 }
14d7e9de 2497
2b39e907 2498 if (!*raw_super) {
fd694733
JK		 2499 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2500 sizeof(*super));
2b39e907
SL		 2501 *valid_super_block = block;
2502 *raw_super = super;
2503 }
2504 brelse(bh);
da554e48 2505 }
2506
2b39e907
SL		 2507 /* Fail to read any one of the superblocks*/
2508 if (err < 0)
2509 *recovery = 1;
da554e48 2510
da554e48 2511 /* No valid superblock */
2b39e907 2512 if (!*raw_super)
b39f0de2 2513 kfree(super);
2b39e907
SL		 2514 else
2515 err = 0;
da554e48 2516
2b39e907 2517 return err;
14d7e9de 2518}
2519
fd694733 2520int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 2521{
5d909cdb 2522 struct buffer_head *bh;
26d815ad
JK		 2523 int err;
2524
df728b0f
JK		 2525 if ((recover && f2fs_readonly(sbi->sb)) ||
2526 bdev_read_only(sbi->sb->s_bdev)) {
2527 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 2528 return -EROFS;
df728b0f 2529 }
f2353d7b 2530
fd694733 2531 /* write back-up superblock first */
0964fc1a 2532 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 2533 if (!bh)
2534 return -EIO;
fd694733 2535 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 2536 brelse(bh);
c5bda1c8
CY		 2537
2538 /* if we are in recovery path, skip writing valid superblock */
2539 if (recover || err)
5d909cdb 2540 return err;
26d815ad
JK		 2541
2542 /* write current valid superblock */
0964fc1a 2543 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 2544 if (!bh)
2545 return -EIO;
2546 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2547 brelse(bh);
2548 return err;
26d815ad
JK		 2549}
2550
3c62be17
JK		 2551static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
2552{
2553 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 2554 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 2555 int i;
2556
7bb3a371
MS		 2557 /* Initialize single device information */
2558 if (!RDEV(0).path[0]) {
2559 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 2560 return 0;
7bb3a371
MS		 2561 max_devices = 1;
2562 }
3c62be17 2563
7bb3a371
MS		 2564 /*
2565 * Initialize multiple devices information, or single
2566 * zoned block device information.
2567 */
4e6aad29
CY		 2568 sbi->devs = f2fs_kzalloc(sbi, sizeof(struct f2fs_dev_info) *
2569 max_devices, GFP_KERNEL);
7bb3a371
MS		 2570 if (!sbi->devs)
2571 return -ENOMEM;
3c62be17 2572
7bb3a371 2573 for (i = 0; i < max_devices; i++) {
3c62be17 2574
7bb3a371
MS		 2575 if (i > 0 && !RDEV(i).path[0])
2576 break;
2577
2578 if (max_devices == 1) {
2579 /* Single zoned block device mount */
2580 FDEV(0).bdev =
2581 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 2582 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 2583 } else {
2584 /* Multi-device mount */
2585 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
2586 FDEV(i).total_segments =
2587 le32_to_cpu(RDEV(i).total_segments);
2588 if (i == 0) {
2589 FDEV(i).start_blk = 0;
2590 FDEV(i).end_blk = FDEV(i).start_blk +
2591 (FDEV(i).total_segments <<
2592 sbi->log_blocks_per_seg) - 1 +
2593 le32_to_cpu(raw_super->segment0_blkaddr);
2594 } else {
2595 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
2596 FDEV(i).end_blk = FDEV(i).start_blk +
2597 (FDEV(i).total_segments <<
2598 sbi->log_blocks_per_seg) - 1;
2599 }
2600 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 2601 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 2602 }
3c62be17
JK		 2603 if (IS_ERR(FDEV(i).bdev))
2604 return PTR_ERR(FDEV(i).bdev);
2605
2606 /* to release errored devices */
2607 sbi->s_ndevs = i + 1;
2608
2609#ifdef CONFIG_BLK_DEV_ZONED
2610 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
ccd31cb2 2611 !f2fs_sb_has_blkzoned(sbi->sb)) {
3c62be17
JK		 2612 f2fs_msg(sbi->sb, KERN_ERR,
2613 "Zoned block device feature not enabled\n");
2614 return -EINVAL;
2615 }
2616 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
2617 if (init_blkz_info(sbi, i)) {
2618 f2fs_msg(sbi->sb, KERN_ERR,
2619 "Failed to initialize F2FS blkzone information");
2620 return -EINVAL;
2621 }
7bb3a371
MS		 2622 if (max_devices == 1)
2623 break;
3c62be17
JK		 2624 f2fs_msg(sbi->sb, KERN_INFO,
2625 "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
2626 i, FDEV(i).path,
2627 FDEV(i).total_segments,
2628 FDEV(i).start_blk, FDEV(i).end_blk,
2629 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
2630 "Host-aware" : "Host-managed");
2631 continue;
2632 }
2633#endif
2634 f2fs_msg(sbi->sb, KERN_INFO,
2635 "Mount Device [%2d]: %20s, %8u, %8x - %8x",
2636 i, FDEV(i).path,
2637 FDEV(i).total_segments,
2638 FDEV(i).start_blk, FDEV(i).end_blk);
2639 }
0a595eba
JK		 2640 f2fs_msg(sbi->sb, KERN_INFO,
2641 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 2642 return 0;
2643}
2644
84b89e5d
JK		 2645static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
2646{
2647 struct f2fs_sm_info *sm_i = SM_I(sbi);
2648
2649 /* adjust parameters according to the volume size */
2650 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 2651 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 2652 sm_i->dcc_info->discard_granularity = 1;
2653 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
2654 }
2655}
2656
aff063e2
JK		 2657static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
2658{
2659 struct f2fs_sb_info *sbi;
da554e48 2660 struct f2fs_super_block *raw_super;
aff063e2 2661 struct inode *root;
99e3e858 2662 int err;
2adc3505 2663 bool retry = true, need_fsck = false;
dabc4a5c 2664 char *options = NULL;
e8240f65 2665 int recovery, i, valid_super_block;
8f1dbbbb 2666 struct curseg_info *seg_i;
aff063e2 2667
ed2e621a 2668try_onemore:
da554e48 2669 err = -EINVAL;
2670 raw_super = NULL;
e8240f65 2671 valid_super_block = -1;
da554e48 2672 recovery = 0;
2673
aff063e2
JK		 2674 /* allocate memory for f2fs-specific super block info */
2675 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
2676 if (!sbi)
2677 return -ENOMEM;
2678
df728b0f
JK		 2679 sbi->sb = sb;
2680
43b6573b
KM		 2681 /* Load the checksum driver */
2682 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
2683 if (IS_ERR(sbi->s_chksum_driver)) {
2684 f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver.");
2685 err = PTR_ERR(sbi->s_chksum_driver);
2686 sbi->s_chksum_driver = NULL;
2687 goto free_sbi;
2688 }
2689
ff9234ad 2690 /* set a block size */
6bacf52f 2691 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
a07ef784 2692 f2fs_msg(sb, KERN_ERR, "unable to set blocksize");
aff063e2 2693 goto free_sbi;
a07ef784 2694 }
aff063e2 2695
df728b0f 2696 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 2697 &recovery);
9076a75f
GZ		 2698 if (err)
2699 goto free_sbi;
2700
5fb08372 2701 sb->s_fs_info = sbi;
52763a4b
JK		 2702 sbi->raw_super = raw_super;
2703
63189b78
CY		 2704 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
2705 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
7c2e5963 2706
704956ec
CY		 2707 /* precompute checksum seed for metadata */
2708 if (f2fs_sb_has_inode_chksum(sb))
2709 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
2710 sizeof(raw_super->uuid));
2711
d1b959c8
DLM		 2712 /*
2713 * The BLKZONED feature indicates that the drive was formatted with
2714 * zone alignment optimization. This is optional for host-aware
2715 * devices, but mandatory for host-managed zoned block devices.
2716 */
2717#ifndef CONFIG_BLK_DEV_ZONED
ccd31cb2 2718 if (f2fs_sb_has_blkzoned(sb)) {
d1b959c8
DLM		 2719 f2fs_msg(sb, KERN_ERR,
2720 "Zoned block device support is not enabled\n");
1727f317 2721 err = -EOPNOTSUPP;
d1b959c8
DLM		 2722 goto free_sb_buf;
2723 }
d1b959c8 2724#endif
498c5e9f 2725 default_options(sbi);
aff063e2 2726 /* parse mount options */
dabc4a5c
JK		 2727 options = kstrdup((const char *)data, GFP_KERNEL);
2728 if (data && !options) {
2729 err = -ENOMEM;
aff063e2 2730 goto free_sb_buf;
dabc4a5c
JK		 2731 }
2732
2733 err = parse_options(sb, options);
2734 if (err)
2735 goto free_options;
aff063e2 2736
e0afc4d6
CY		 2737 sbi->max_file_blocks = max_file_blocks();
2738 sb->s_maxbytes = sbi->max_file_blocks <<
2739 le32_to_cpu(raw_super->log_blocksize);
aff063e2
JK		 2740 sb->s_max_links = F2FS_LINK_MAX;
2741 get_random_bytes(&sbi->s_next_generation, sizeof(u32));
2742
0abd675e
CY		 2743#ifdef CONFIG_QUOTA
2744 sb->dq_op = &f2fs_quota_operations;
ea676733
JK		 2745 if (f2fs_sb_has_quota_ino(sb))
2746 sb->s_qcop = &dquot_quotactl_sysfile_ops;
2747 else
2748 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 2749 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a
CY		 2750
2751 if (f2fs_sb_has_quota_ino(sbi->sb)) {
2752 for (i = 0; i < MAXQUOTAS; i++) {
2753 if (f2fs_qf_ino(sbi->sb, i))
2754 sbi->nquota_files++;
2755 }
2756 }
0abd675e
CY		 2757#endif
2758
aff063e2 2759 sb->s_op = &f2fs_sops;
ffcc4182 2760#ifdef CONFIG_F2FS_FS_ENCRYPTION
0b81d077 2761 sb->s_cop = &f2fs_cryptops;
ffcc4182 2762#endif
aff063e2
JK		 2763 sb->s_xattr = f2fs_xattr_handlers;
2764 sb->s_export_op = &f2fs_export_ops;
2765 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 2766 sb->s_time_gran = 1;
1751e8a6
LT		 2767 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
2768 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 2769 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 2770 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 2771
2772 /* init f2fs-specific super block info */
e8240f65 2773 sbi->valid_super_block = valid_super_block;
aff063e2 2774 mutex_init(&sbi->gc_mutex);
aff063e2 2775 mutex_init(&sbi->cp_mutex);
b3582c68 2776 init_rwsem(&sbi->node_write);
59c9081b 2777 init_rwsem(&sbi->node_change);
315df839
JK		 2778
2779 /* disallow all the data/node/meta page writes */
2780 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 2781 spin_lock_init(&sbi->stat_lock);
971767ca 2782
b0af6d49
CY		 2783 /* init iostat info */
2784 spin_lock_init(&sbi->iostat_lock);
2785 sbi->iostat_enable = false;
2786
458e6197 2787 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 2788 int n = (i == META) ? 1: NR_TEMP_TYPE;
2789 int j;
2790
4e6aad29
CY		 2791 sbi->write_io[i] = f2fs_kmalloc(sbi,
2792 n * sizeof(struct f2fs_bio_info),
2793 GFP_KERNEL);
b63def91
CJ		 2794 if (!sbi->write_io[i]) {
2795 err = -ENOMEM;
a912b54d 2796 goto free_options;
b63def91 2797 }
a912b54d
JK		 2798
2799 for (j = HOT; j < n; j++) {
2800 init_rwsem(&sbi->write_io[i][j].io_rwsem);
2801 sbi->write_io[i][j].sbi = sbi;
2802 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 2803 spin_lock_init(&sbi->write_io[i][j].io_lock);
2804 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
a912b54d 2805 }
458e6197 2806 }
971767ca 2807
b873b798 2808 init_rwsem(&sbi->cp_rwsem);
fb51b5ef 2809 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 2810 init_sb_info(sbi);
2811
523be8a6
JK		 2812 err = init_percpu_info(sbi);
2813 if (err)
d7997e63 2814 goto free_bio_info;
523be8a6 2815
0a595eba
JK		 2816 if (F2FS_IO_SIZE(sbi) > 1) {
2817 sbi->write_io_dummy =
a3ebfe4f 2818 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 2819 if (!sbi->write_io_dummy) {
2820 err = -ENOMEM;
d7997e63 2821 goto free_percpu;
1727f317 2822 }
0a595eba
JK		 2823 }
2824
aff063e2
JK		 2825 /* get an inode for meta space */
2826 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
2827 if (IS_ERR(sbi->meta_inode)) {
a07ef784 2828 f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode");
aff063e2 2829 err = PTR_ERR(sbi->meta_inode);
0a595eba 2830 goto free_io_dummy;
aff063e2
JK		 2831 }
2832
2833 err = get_valid_checkpoint(sbi);
a07ef784
NJ		 2834 if (err) {
2835 f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint");
aff063e2 2836 goto free_meta_inode;
a07ef784 2837 }
aff063e2 2838
3c62be17
JK		 2839 /* Initialize device list */
2840 err = f2fs_scan_devices(sbi);
2841 if (err) {
2842 f2fs_msg(sb, KERN_ERR, "Failed to find devices");
2843 goto free_devices;
2844 }
2845
aff063e2
JK		 2846 sbi->total_valid_node_count =
2847 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 2848 percpu_counter_set(&sbi->total_valid_inode_count,
2849 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 2850 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
2851 sbi->total_valid_block_count =
2852 le64_to_cpu(sbi->ckpt->valid_block_count);
2853 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 2854 sbi->reserved_blocks = 0;
80d42145 2855 sbi->current_reserved_blocks = 0;
7e65be49 2856 limit_reserve_root(sbi);
41382ec4 2857
c227f912
CY		 2858 for (i = 0; i < NR_INODE_TYPE; i++) {
2859 INIT_LIST_HEAD(&sbi->inode_list[i]);
2860 spin_lock_init(&sbi->inode_lock[i]);
2861 }
aff063e2 2862
1dcc336b
CY		 2863 init_extent_cache_info(sbi);
2864
6451e041 2865 init_ino_entry_info(sbi);
aff063e2
JK		 2866
2867 /* setup f2fs internal modules */
2868 err = build_segment_manager(sbi);
a07ef784
NJ		 2869 if (err) {
2870 f2fs_msg(sb, KERN_ERR,
2871 "Failed to initialize F2FS segment manager");
aff063e2 2872 goto free_sm;
a07ef784 2873 }
aff063e2 2874 err = build_node_manager(sbi);
a07ef784
NJ		 2875 if (err) {
2876 f2fs_msg(sb, KERN_ERR,
2877 "Failed to initialize F2FS node manager");
aff063e2 2878 goto free_nm;
a07ef784 2879 }
aff063e2 2880
8f1dbbbb
SL		 2881 /* For write statistics */
2882 if (sb->s_bdev->bd_part)
2883 sbi->sectors_written_start =
2884 (u64)part_stat_read(sb->s_bdev->bd_part, sectors[1]);
2885
2886 /* Read accumulated write IO statistics if exists */
2887 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
2888 if (__exist_node_summaries(sbi))
2889 sbi->kbytes_written =
b2dde6fc 2890 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 2891
aff063e2
JK		 2892 build_gc_manager(sbi);
2893
2894 /* get an inode for node space */
2895 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
2896 if (IS_ERR(sbi->node_inode)) {
a07ef784 2897 f2fs_msg(sb, KERN_ERR, "Failed to read node inode");
aff063e2
JK		 2898 err = PTR_ERR(sbi->node_inode);
2899 goto free_nm;
2900 }
2901
aa51d08a
JK		 2902 err = f2fs_build_stats(sbi);
2903 if (err)
bae01eda 2904 goto free_node_inode;
aa51d08a 2905
aff063e2
JK		 2906 /* read root inode and dentry */
2907 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
2908 if (IS_ERR(root)) {
a07ef784 2909 f2fs_msg(sb, KERN_ERR, "Failed to read root inode");
aff063e2 2910 err = PTR_ERR(root);
bae01eda 2911 goto free_stats;
aff063e2 2912 }
8f99a946 2913 if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
9d847950 2914 iput(root);
8f99a946 2915 err = -EINVAL;
9d847950 2916 goto free_node_inode;
8f99a946 2917 }
aff063e2
JK		 2918
2919 sb->s_root = d_make_root(root); /* allocate root dentry */
2920 if (!sb->s_root) {
2921 err = -ENOMEM;
2922 goto free_root_inode;
2923 }
2924
dc6b2055 2925 err = f2fs_register_sysfs(sbi);
b59d0bae 2926 if (err)
a398101a 2927 goto free_root_inode;
b59d0bae 2928
ea676733
JK		 2929#ifdef CONFIG_QUOTA
2930 /*
2931 * Turn on quotas which were not enabled for read-only mounts if
2932 * filesystem has quota feature, so that they are updated correctly.
2933 */
deeedd71 2934 if (f2fs_sb_has_quota_ino(sb) && !f2fs_readonly(sb)) {
ea676733
JK		 2935 err = f2fs_enable_quotas(sb);
2936 if (err) {
2937 f2fs_msg(sb, KERN_ERR,
2938 "Cannot turn on quotas: error %d", err);
2939 goto free_sysfs;
2940 }
2941 }
2942#endif
4b2414d0
CY		 2943 /* if there are nt orphan nodes free them */
2944 err = recover_orphan_inodes(sbi);
2945 if (err)
ea676733 2946 goto free_meta;
4b2414d0 2947
6437d1b0
JK		 2948 /* recover fsynced data */
2949 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
081d78c2
JK		 2950 /*
2951 * mount should be failed, when device has readonly mode, and
2952 * previous checkpoint was not done by clean system shutdown.
2953 */
2954 if (bdev_read_only(sb->s_bdev) &&
aaec2b1d 2955 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
081d78c2 2956 err = -EROFS;
4b2414d0 2957 goto free_meta;
081d78c2 2958 }
2adc3505
CY		 2959
2960 if (need_fsck)
2961 set_sbi_flag(sbi, SBI_NEED_FSCK);
2962
a468f0ef
JK		 2963 if (!retry)
2964 goto skip_recovery;
2965
6781eabb
JK		 2966 err = recover_fsync_data(sbi, false);
2967 if (err < 0) {
2adc3505 2968 need_fsck = true;
6437d1b0 2969 f2fs_msg(sb, KERN_ERR,
99e3e858 2970 "Cannot recover all fsync data errno=%d", err);
4b2414d0 2971 goto free_meta;
ed2e621a 2972 }
6781eabb
JK		 2973 } else {
2974 err = recover_fsync_data(sbi, true);
2975
2976 if (!f2fs_readonly(sb) && err > 0) {
2977 err = -EINVAL;
2978 f2fs_msg(sb, KERN_ERR,
2979 "Need to recover fsync data");
ea676733 2980 goto free_meta;
6781eabb 2981 }
6437d1b0 2982 }
a468f0ef 2983skip_recovery:
315df839
JK		 2984 /* recover_fsync_data() cleared this already */
2985 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 2986
6437d1b0
JK		 2987 /*
2988 * If filesystem is not mounted as read-only then
2989 * do start the gc_thread.
2990 */
6c029932 2991 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
6437d1b0
JK		 2992 /* After POR, we can run background GC thread.*/
2993 err = start_gc_thread(sbi);
2994 if (err)
4b2414d0 2995 goto free_meta;
6437d1b0 2996 }
dabc4a5c 2997 kfree(options);
da554e48 2998
2999 /* recover broken superblock */
f2353d7b 3000 if (recovery) {
41214b3c
CY		 3001 err = f2fs_commit_super(sbi, true);
3002 f2fs_msg(sb, KERN_INFO,
99e3e858 3003 "Try to recover %dth superblock, ret: %d",
41214b3c 3004 sbi->valid_super_block ? 1 : 2, err);
da554e48 3005 }
3006
bae01eda
CY		 3007 f2fs_join_shrinker(sbi);
3008
84b89e5d
JK		 3009 f2fs_tuning_parameters(sbi);
3010
1200abb2
JK		 3011 f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx",
3012 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3013 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3014 f2fs_update_time(sbi, REQ_TIME);
aff063e2 3015 return 0;
6437d1b0 3016
4b2414d0 3017free_meta:
ea676733 3018#ifdef CONFIG_QUOTA
deeedd71 3019 if (f2fs_sb_has_quota_ino(sb) && !f2fs_readonly(sb))
ea676733
JK		 3020 f2fs_quota_off_umount(sbi->sb);
3021#endif
0f18b462 3022 f2fs_sync_inode_meta(sbi);
4b2414d0
CY		 3023 /*
3024 * Some dirty meta pages can be produced by recover_orphan_inodes()
3025 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
3026 * followed by write_checkpoint() through f2fs_write_node_pages(), which
3027 * falls into an infinite loop in sync_meta_pages().
3028 */
3029 truncate_inode_pages_final(META_MAPPING(sbi));
ea676733 3030#ifdef CONFIG_QUOTA
4b2414d0 3031free_sysfs:
ea676733 3032#endif
dc6b2055 3033 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3034free_root_inode:
3035 dput(sb->s_root);
3036 sb->s_root = NULL;
bae01eda
CY		 3037free_stats:
3038 f2fs_destroy_stats(sbi);
aff063e2 3039free_node_inode:
d41065e2 3040 release_ino_entry(sbi, true);
bae01eda 3041 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2
JK		 3042 iput(sbi->node_inode);
3043free_nm:
3044 destroy_node_manager(sbi);
3045free_sm:
3046 destroy_segment_manager(sbi);
3c62be17
JK		 3047free_devices:
3048 destroy_device_list(sbi);
aff063e2
JK		 3049 kfree(sbi->ckpt);
3050free_meta_inode:
3051 make_bad_inode(sbi->meta_inode);
3052 iput(sbi->meta_inode);
0a595eba
JK		 3053free_io_dummy:
3054 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3055free_percpu:
3056 destroy_percpu_info(sbi);
3057free_bio_info:
a912b54d
JK		 3058 for (i = 0; i < NR_PAGE_TYPE; i++)
3059 kfree(sbi->write_io[i]);
d7997e63 3060free_options:
4b2414d0
CY		 3061#ifdef CONFIG_QUOTA
3062 for (i = 0; i < MAXQUOTAS; i++)
63189b78 3063 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3064#endif
dabc4a5c 3065 kfree(options);
aff063e2 3066free_sb_buf:
b39f0de2 3067 kfree(raw_super);
aff063e2 3068free_sbi:
43b6573b
KM		 3069 if (sbi->s_chksum_driver)
3070 crypto_free_shash(sbi->s_chksum_driver);
aff063e2 3071 kfree(sbi);
ed2e621a
JK		 3072
3073 /* give only one another chance */
3074 if (retry) {
9df47ba7 3075 retry = false;
ed2e621a
JK		 3076 shrink_dcache_sb(sb);
3077 goto try_onemore;
3078 }
aff063e2
JK		 3079 return err;
3080}
3081
3082static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3083 const char *dev_name, void *data)
3084{
3085 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3086}
3087
30a5537f
JK		 3088static void kill_f2fs_super(struct super_block *sb)
3089{
cce13252 3090 if (sb->s_root) {
caf0047e 3091 set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE);
cce13252
CY		 3092 stop_gc_thread(F2FS_SB(sb));
3093 stop_discard_thread(F2FS_SB(sb));
3094 }
30a5537f
JK		 3095 kill_block_super(sb);
3096}
3097
aff063e2
JK		 3098static struct file_system_type f2fs_fs_type = {
3099 .owner = THIS_MODULE,
3100 .name = "f2fs",
3101 .mount = f2fs_mount,
30a5537f 3102 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3103 .fs_flags = FS_REQUIRES_DEV,
3104};
7f78e035 3105MODULE_ALIAS_FS("f2fs");
aff063e2 3106
6e6093a8 3107static int __init init_inodecache(void)
aff063e2 3108{
5d097056
VD		 3109 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3110 sizeof(struct f2fs_inode_info), 0,
3111 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3112 if (!f2fs_inode_cachep)
aff063e2
JK		 3113 return -ENOMEM;
3114 return 0;
3115}
3116
3117static void destroy_inodecache(void)
3118{
3119 /*
3120 * Make sure all delayed rcu free inodes are flushed before we
3121 * destroy cache.
3122 */
3123 rcu_barrier();
3124 kmem_cache_destroy(f2fs_inode_cachep);
3125}
3126
3127static int __init init_f2fs_fs(void)
3128{
3129 int err;
3130
c0508650
JK		 3131 f2fs_build_trace_ios();
3132
aff063e2
JK		 3133 err = init_inodecache();
3134 if (err)
3135 goto fail;
3136 err = create_node_manager_caches();
3137 if (err)
9890ff3f 3138 goto free_inodecache;
7fd9e544 3139 err = create_segment_manager_caches();
aff063e2 3140 if (err)
9890ff3f 3141 goto free_node_manager_caches;
aff063e2
JK		 3142 err = create_checkpoint_caches();
3143 if (err)
06292073 3144 goto free_segment_manager_caches;
1dcc336b
CY		 3145 err = create_extent_cache();
3146 if (err)
3147 goto free_checkpoint_caches;
dc6b2055 3148 err = f2fs_init_sysfs();
a398101a 3149 if (err)
1dcc336b 3150 goto free_extent_cache;
2658e50d 3151 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3152 if (err)
a398101a 3153 goto free_sysfs;
2658e50d
JK		 3154 err = register_filesystem(&f2fs_fs_type);
3155 if (err)
3156 goto free_shrinker;
787c7b8c
CY		 3157 err = f2fs_create_root_stats();
3158 if (err)
3159 goto free_filesystem;
6dbb1796
EB		 3160 err = f2fs_init_post_read_processing();
3161 if (err)
3162 goto free_root_stats;
9890ff3f
ZH		 3163 return 0;
3164
6dbb1796
EB		 3165free_root_stats:
3166 f2fs_destroy_root_stats();
787c7b8c
CY		 3167free_filesystem:
3168 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3169free_shrinker:
3170 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3171free_sysfs:
dc6b2055 3172 f2fs_exit_sysfs();
1dcc336b
CY		 3173free_extent_cache:
3174 destroy_extent_cache();
9890ff3f
ZH		 3175free_checkpoint_caches:
3176 destroy_checkpoint_caches();
7fd9e544
JK		 3177free_segment_manager_caches:
3178 destroy_segment_manager_caches();
9890ff3f
ZH		 3179free_node_manager_caches:
3180 destroy_node_manager_caches();
3181free_inodecache:
3182 destroy_inodecache();
aff063e2
JK		 3183fail:
3184 return err;
3185}
3186
3187static void __exit exit_f2fs_fs(void)
3188{
6dbb1796 3189 f2fs_destroy_post_read_processing();
4589d25d 3190 f2fs_destroy_root_stats();
aff063e2 3191 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3192 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3193 f2fs_exit_sysfs();
fdf6c8be 3194 destroy_extent_cache();
aff063e2 3195 destroy_checkpoint_caches();
5dcd8a71 3196 destroy_segment_manager_caches();
aff063e2
JK		 3197 destroy_node_manager_caches();
3198 destroy_inodecache();
351f4fba 3199 f2fs_destroy_trace_ios();
aff063e2
JK		 3200}
3201
3202module_init(init_f2fs_fs)
3203module_exit(exit_f2fs_fs)
3204
3205MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3206MODULE_DESCRIPTION("Flash Friendly File System");
3207MODULE_LICENSE("GPL");
b4b9d34c 3208
Ubuntu Hirsute Linux kernel mirror