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f2fs: fix to spread clear_cold_data()
[linux-block.git] / fs / f2fs / super.c
CommitLineData
7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
aff063e2
JK		 3 * fs/f2fs/super.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
aff063e2
JK		 7 */
8#include <linux/module.h>
9#include <linux/init.h>
10#include <linux/fs.h>
11#include <linux/statfs.h>
aff063e2
JK		 12#include <linux/buffer_head.h>
13#include <linux/backing-dev.h>
14#include <linux/kthread.h>
15#include <linux/parser.h>
16#include <linux/mount.h>
17#include <linux/seq_file.h>
5e176d54 18#include <linux/proc_fs.h>
aff063e2
JK		 19#include <linux/random.h>
20#include <linux/exportfs.h>
d3ee456d 21#include <linux/blkdev.h>
0abd675e 22#include <linux/quotaops.h>
aff063e2 23#include <linux/f2fs_fs.h>
b59d0bae 24#include <linux/sysfs.h>
4b2414d0 25#include <linux/quota.h>
aff063e2
JK		 26
27#include "f2fs.h"
28#include "node.h"
5ec4e49f 29#include "segment.h"
aff063e2 30#include "xattr.h"
b59d0bae 31#include "gc.h"
db9f7c1a 32#include "trace.h"
aff063e2 33
a2a4a7e4
NJ		 34#define CREATE_TRACE_POINTS
35#include <trace/events/f2fs.h>
36
aff063e2
JK		 37static struct kmem_cache *f2fs_inode_cachep;
38
73faec4d 39#ifdef CONFIG_F2FS_FAULT_INJECTION
2c63fead 40
2d3a5856 41char *f2fs_fault_name[FAULT_MAX] = {
2c63fead 42 [FAULT_KMALLOC] = "kmalloc",
628b3d14 43 [FAULT_KVMALLOC] = "kvmalloc",
c41f3cc3 44 [FAULT_PAGE_ALLOC] = "page alloc",
01eccef7 45 [FAULT_PAGE_GET] = "page get",
d62fe971 46 [FAULT_ALLOC_BIO] = "alloc bio",
cb78942b
JK		 47 [FAULT_ALLOC_NID] = "alloc nid",
48 [FAULT_ORPHAN] = "orphan",
49 [FAULT_BLOCK] = "no more block",
50 [FAULT_DIR_DEPTH] = "too big dir depth",
53aa6bbf 51 [FAULT_EVICT_INODE] = "evict_inode fail",
14b44d23 52 [FAULT_TRUNCATE] = "truncate fail",
6f5c2ed0 53 [FAULT_READ_IO] = "read IO error",
0f348028 54 [FAULT_CHECKPOINT] = "checkpoint error",
b83dcfe6 55 [FAULT_DISCARD] = "discard error",
6f5c2ed0 56 [FAULT_WRITE_IO] = "write IO error",
2c63fead 57};
08796897 58
d494500a
CY		 59void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
60 unsigned int type)
08796897 61{
63189b78 62 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1ecc0c5c 63
08796897 64 if (rate) {
1ecc0c5c
CY		 65 atomic_set(&ffi->inject_ops, 0);
66 ffi->inject_rate = rate;
08796897 67 }
d494500a
CY		 68
69 if (type)
70 ffi->inject_type = type;
71
72 if (!rate && !type)
73 memset(ffi, 0, sizeof(struct f2fs_fault_info));
08796897 74}
73faec4d
JK		 75#endif
76
2658e50d
JK		 77/* f2fs-wide shrinker description */
78static struct shrinker f2fs_shrinker_info = {
79 .scan_objects = f2fs_shrink_scan,
80 .count_objects = f2fs_shrink_count,
81 .seeks = DEFAULT_SEEKS,
82};
83
aff063e2 84enum {
696c018c 85 Opt_gc_background,
aff063e2 86 Opt_disable_roll_forward,
2d834bf9 87 Opt_norecovery,
aff063e2 88 Opt_discard,
64058be9 89 Opt_nodiscard,
aff063e2 90 Opt_noheap,
7a20b8a6 91 Opt_heap,
4058c511 92 Opt_user_xattr,
aff063e2 93 Opt_nouser_xattr,
4058c511 94 Opt_acl,
aff063e2
JK		 95 Opt_noacl,
96 Opt_active_logs,
97 Opt_disable_ext_identify,
444c580f 98 Opt_inline_xattr,
23cf7212 99 Opt_noinline_xattr,
6afc662e 100 Opt_inline_xattr_size,
8274de77 101 Opt_inline_data,
5efd3c6f 102 Opt_inline_dentry,
97c1794a 103 Opt_noinline_dentry,
6b4afdd7 104 Opt_flush_merge,
69e9e427 105 Opt_noflush_merge,
0f7b2abd 106 Opt_nobarrier,
d5053a34 107 Opt_fastboot,
89672159 108 Opt_extent_cache,
7daaea25 109 Opt_noextent_cache,
75342797 110 Opt_noinline_data,
343f40f0 111 Opt_data_flush,
7e65be49 112 Opt_reserve_root,
7c2e5963
JK		 113 Opt_resgid,
114 Opt_resuid,
36abef4e 115 Opt_mode,
ec91538d 116 Opt_io_size_bits,
73faec4d 117 Opt_fault_injection,
d494500a 118 Opt_fault_type,
6d94c74a
JK		 119 Opt_lazytime,
120 Opt_nolazytime,
4b2414d0
CY		 121 Opt_quota,
122 Opt_noquota,
0abd675e
CY		 123 Opt_usrquota,
124 Opt_grpquota,
5c57132e 125 Opt_prjquota,
4b2414d0
CY		 126 Opt_usrjquota,
127 Opt_grpjquota,
128 Opt_prjjquota,
129 Opt_offusrjquota,
130 Opt_offgrpjquota,
131 Opt_offprjjquota,
132 Opt_jqfmt_vfsold,
133 Opt_jqfmt_vfsv0,
134 Opt_jqfmt_vfsv1,
0cdd3195 135 Opt_whint,
07939627 136 Opt_alloc,
93cf93f1 137 Opt_fsync,
ff62af20 138 Opt_test_dummy_encryption,
4354994f 139 Opt_checkpoint,
aff063e2
JK		 140 Opt_err,
141};
142
143static match_table_t f2fs_tokens = {
696c018c 144 {Opt_gc_background, "background_gc=%s"},
aff063e2 145 {Opt_disable_roll_forward, "disable_roll_forward"},
2d834bf9 146 {Opt_norecovery, "norecovery"},
aff063e2 147 {Opt_discard, "discard"},
64058be9 148 {Opt_nodiscard, "nodiscard"},
aff063e2 149 {Opt_noheap, "no_heap"},
7a20b8a6 150 {Opt_heap, "heap"},
4058c511 151 {Opt_user_xattr, "user_xattr"},
aff063e2 152 {Opt_nouser_xattr, "nouser_xattr"},
4058c511 153 {Opt_acl, "acl"},
aff063e2
JK		 154 {Opt_noacl, "noacl"},
155 {Opt_active_logs, "active_logs=%u"},
156 {Opt_disable_ext_identify, "disable_ext_identify"},
444c580f 157 {Opt_inline_xattr, "inline_xattr"},
23cf7212 158 {Opt_noinline_xattr, "noinline_xattr"},
6afc662e 159 {Opt_inline_xattr_size, "inline_xattr_size=%u"},
8274de77 160 {Opt_inline_data, "inline_data"},
5efd3c6f 161 {Opt_inline_dentry, "inline_dentry"},
97c1794a 162 {Opt_noinline_dentry, "noinline_dentry"},
6b4afdd7 163 {Opt_flush_merge, "flush_merge"},
69e9e427 164 {Opt_noflush_merge, "noflush_merge"},
0f7b2abd 165 {Opt_nobarrier, "nobarrier"},
d5053a34 166 {Opt_fastboot, "fastboot"},
89672159 167 {Opt_extent_cache, "extent_cache"},
7daaea25 168 {Opt_noextent_cache, "noextent_cache"},
75342797 169 {Opt_noinline_data, "noinline_data"},
343f40f0 170 {Opt_data_flush, "data_flush"},
7e65be49 171 {Opt_reserve_root, "reserve_root=%u"},
7c2e5963
JK		 172 {Opt_resgid, "resgid=%u"},
173 {Opt_resuid, "resuid=%u"},
36abef4e 174 {Opt_mode, "mode=%s"},
ec91538d 175 {Opt_io_size_bits, "io_bits=%u"},
73faec4d 176 {Opt_fault_injection, "fault_injection=%u"},
d494500a 177 {Opt_fault_type, "fault_type=%u"},
6d94c74a
JK		 178 {Opt_lazytime, "lazytime"},
179 {Opt_nolazytime, "nolazytime"},
4b2414d0
CY		 180 {Opt_quota, "quota"},
181 {Opt_noquota, "noquota"},
0abd675e
CY		 182 {Opt_usrquota, "usrquota"},
183 {Opt_grpquota, "grpquota"},
5c57132e 184 {Opt_prjquota, "prjquota"},
4b2414d0
CY		 185 {Opt_usrjquota, "usrjquota=%s"},
186 {Opt_grpjquota, "grpjquota=%s"},
187 {Opt_prjjquota, "prjjquota=%s"},
188 {Opt_offusrjquota, "usrjquota="},
189 {Opt_offgrpjquota, "grpjquota="},
190 {Opt_offprjjquota, "prjjquota="},
191 {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
192 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
193 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
0cdd3195 194 {Opt_whint, "whint_mode=%s"},
07939627 195 {Opt_alloc, "alloc_mode=%s"},
93cf93f1 196 {Opt_fsync, "fsync_mode=%s"},
ff62af20 197 {Opt_test_dummy_encryption, "test_dummy_encryption"},
4354994f 198 {Opt_checkpoint, "checkpoint=%s"},
aff063e2
JK		 199 {Opt_err, NULL},
200};
201
a07ef784
NJ		 202void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...)
203{
204 struct va_format vaf;
205 va_list args;
206
207 va_start(args, fmt);
208 vaf.fmt = fmt;
209 vaf.va = &args;
22d7ea13 210 printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf);
a07ef784
NJ		 211 va_end(args);
212}
213
7e65be49
JK		 214static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
215{
216 block_t limit = (sbi->user_block_count << 1) / 1000;
217
218 /* limit is 0.2% */
63189b78
CY		 219 if (test_opt(sbi, RESERVE_ROOT) &&
220 F2FS_OPTION(sbi).root_reserved_blocks > limit) {
221 F2FS_OPTION(sbi).root_reserved_blocks = limit;
7e65be49
JK		 222 f2fs_msg(sbi->sb, KERN_INFO,
223 "Reduce reserved blocks for root = %u",
63189b78 224 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 225 }
7c2e5963 226 if (!test_opt(sbi, RESERVE_ROOT) &&
63189b78 227 (!uid_eq(F2FS_OPTION(sbi).s_resuid,
7c2e5963 228 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
63189b78 229 !gid_eq(F2FS_OPTION(sbi).s_resgid,
7c2e5963
JK		 230 make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
231 f2fs_msg(sbi->sb, KERN_INFO,
232 "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
63189b78
CY		 233 from_kuid_munged(&init_user_ns,
234 F2FS_OPTION(sbi).s_resuid),
235 from_kgid_munged(&init_user_ns,
236 F2FS_OPTION(sbi).s_resgid));
7e65be49
JK		 237}
238
aff063e2
JK		 239static void init_once(void *foo)
240{
241 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
242
aff063e2
JK		 243 inode_init_once(&fi->vfs_inode);
244}
245
4b2414d0
CY		 246#ifdef CONFIG_QUOTA
247static const char * const quotatypes[] = INITQFNAMES;
248#define QTYPE2NAME(t) (quotatypes[t])
249static int f2fs_set_qf_name(struct super_block *sb, int qtype,
250 substring_t *args)
251{
252 struct f2fs_sb_info *sbi = F2FS_SB(sb);
253 char *qname;
254 int ret = -EINVAL;
255
63189b78 256 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
4b2414d0
CY		 257 f2fs_msg(sb, KERN_ERR,
258 "Cannot change journaled "
259 "quota options when quota turned on");
260 return -EINVAL;
261 }
ea676733
JK		 262 if (f2fs_sb_has_quota_ino(sb)) {
263 f2fs_msg(sb, KERN_INFO,
264 "QUOTA feature is enabled, so ignore qf_name");
265 return 0;
266 }
267
4b2414d0
CY		 268 qname = match_strdup(args);
269 if (!qname) {
270 f2fs_msg(sb, KERN_ERR,
271 "Not enough memory for storing quotafile name");
272 return -EINVAL;
273 }
63189b78
CY		 274 if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
275 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
4b2414d0
CY		 276 ret = 0;
277 else
278 f2fs_msg(sb, KERN_ERR,
279 "%s quota file already specified",
280 QTYPE2NAME(qtype));
281 goto errout;
282 }
283 if (strchr(qname, '/')) {
284 f2fs_msg(sb, KERN_ERR,
285 "quotafile must be on filesystem root");
286 goto errout;
287 }
63189b78 288 F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
4b2414d0
CY		 289 set_opt(sbi, QUOTA);
290 return 0;
291errout:
292 kfree(qname);
293 return ret;
294}
295
296static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
297{
298 struct f2fs_sb_info *sbi = F2FS_SB(sb);
299
63189b78 300 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
4b2414d0
CY		 301 f2fs_msg(sb, KERN_ERR, "Cannot change journaled quota options"
302 " when quota turned on");
303 return -EINVAL;
304 }
63189b78
CY		 305 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
306 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
4b2414d0
CY		 307 return 0;
308}
309
310static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
311{
312 /*
313 * We do the test below only for project quotas. 'usrquota' and
314 * 'grpquota' mount options are allowed even without quota feature
315 * to support legacy quotas in quota files.
316 */
317 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi->sb)) {
318 f2fs_msg(sbi->sb, KERN_ERR, "Project quota feature not enabled. "
319 "Cannot enable project quota enforcement.");
320 return -1;
321 }
63189b78
CY		 322 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
323 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
324 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
325 if (test_opt(sbi, USRQUOTA) &&
326 F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
4b2414d0
CY		 327 clear_opt(sbi, USRQUOTA);
328
63189b78
CY		 329 if (test_opt(sbi, GRPQUOTA) &&
330 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
4b2414d0
CY		 331 clear_opt(sbi, GRPQUOTA);
332
63189b78
CY		 333 if (test_opt(sbi, PRJQUOTA) &&
334 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4b2414d0
CY		 335 clear_opt(sbi, PRJQUOTA);
336
337 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
338 test_opt(sbi, PRJQUOTA)) {
339 f2fs_msg(sbi->sb, KERN_ERR, "old and new quota "
340 "format mixing");
341 return -1;
342 }
343
63189b78 344 if (!F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 345 f2fs_msg(sbi->sb, KERN_ERR, "journaled quota format "
346 "not specified");
347 return -1;
348 }
349 }
ea676733 350
63189b78 351 if (f2fs_sb_has_quota_ino(sbi->sb) && F2FS_OPTION(sbi).s_jquota_fmt) {
ea676733
JK		 352 f2fs_msg(sbi->sb, KERN_INFO,
353 "QUOTA feature is enabled, so ignore jquota_fmt");
63189b78 354 F2FS_OPTION(sbi).s_jquota_fmt = 0;
ea676733 355 }
4b2414d0
CY		 356 return 0;
357}
358#endif
359
696c018c
NJ		 360static int parse_options(struct super_block *sb, char *options)
361{
362 struct f2fs_sb_info *sbi = F2FS_SB(sb);
363 substring_t args[MAX_OPT_ARGS];
364 char *p, *name;
365 int arg = 0;
7c2e5963
JK		 366 kuid_t uid;
367 kgid_t gid;
4b2414d0
CY		 368#ifdef CONFIG_QUOTA
369 int ret;
370#endif
696c018c
NJ		 371
372 if (!options)
373 return 0;
374
375 while ((p = strsep(&options, ",")) != NULL) {
376 int token;
377 if (!*p)
378 continue;
379 /*
380 * Initialize args struct so we know whether arg was
381 * found; some options take optional arguments.
382 */
383 args[0].to = args[0].from = NULL;
384 token = match_token(p, f2fs_tokens, args);
385
386 switch (token) {
387 case Opt_gc_background:
388 name = match_strdup(&args[0]);
389
390 if (!name)
391 return -ENOMEM;
6aefd93b 392 if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
696c018c 393 set_opt(sbi, BG_GC);
6aefd93b
JK		 394 clear_opt(sbi, FORCE_FG_GC);
395 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
696c018c 396 clear_opt(sbi, BG_GC);
6aefd93b
JK		 397 clear_opt(sbi, FORCE_FG_GC);
398 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
399 set_opt(sbi, BG_GC);
400 set_opt(sbi, FORCE_FG_GC);
401 } else {
696c018c
NJ		 402 kfree(name);
403 return -EINVAL;
404 }
405 kfree(name);
406 break;
407 case Opt_disable_roll_forward:
408 set_opt(sbi, DISABLE_ROLL_FORWARD);
409 break;
2d834bf9
JK		 410 case Opt_norecovery:
411 /* this option mounts f2fs with ro */
412 set_opt(sbi, DISABLE_ROLL_FORWARD);
413 if (!f2fs_readonly(sb))
414 return -EINVAL;
415 break;
696c018c 416 case Opt_discard:
7d20c8ab 417 set_opt(sbi, DISCARD);
696c018c 418 break;
64058be9 419 case Opt_nodiscard:
ccd31cb2 420 if (f2fs_sb_has_blkzoned(sb)) {
96ba2dec
DLM		 421 f2fs_msg(sb, KERN_WARNING,
422 "discard is required for zoned block devices");
423 return -EINVAL;
424 }
64058be9 425 clear_opt(sbi, DISCARD);
487df616 426 break;
696c018c
NJ		 427 case Opt_noheap:
428 set_opt(sbi, NOHEAP);
429 break;
7a20b8a6
JK		 430 case Opt_heap:
431 clear_opt(sbi, NOHEAP);
432 break;
696c018c 433#ifdef CONFIG_F2FS_FS_XATTR
4058c511
KA		 434 case Opt_user_xattr:
435 set_opt(sbi, XATTR_USER);
436 break;
696c018c
NJ		 437 case Opt_nouser_xattr:
438 clear_opt(sbi, XATTR_USER);
439 break;
444c580f
JK		 440 case Opt_inline_xattr:
441 set_opt(sbi, INLINE_XATTR);
442 break;
23cf7212
CY		 443 case Opt_noinline_xattr:
444 clear_opt(sbi, INLINE_XATTR);
445 break;
6afc662e
CY		 446 case Opt_inline_xattr_size:
447 if (args->from && match_int(args, &arg))
448 return -EINVAL;
449 set_opt(sbi, INLINE_XATTR_SIZE);
63189b78 450 F2FS_OPTION(sbi).inline_xattr_size = arg;
6afc662e 451 break;
696c018c 452#else
4058c511
KA		 453 case Opt_user_xattr:
454 f2fs_msg(sb, KERN_INFO,
455 "user_xattr options not supported");
456 break;
696c018c
NJ		 457 case Opt_nouser_xattr:
458 f2fs_msg(sb, KERN_INFO,
459 "nouser_xattr options not supported");
460 break;
444c580f
JK		 461 case Opt_inline_xattr:
462 f2fs_msg(sb, KERN_INFO,
463 "inline_xattr options not supported");
464 break;
23cf7212
CY		 465 case Opt_noinline_xattr:
466 f2fs_msg(sb, KERN_INFO,
467 "noinline_xattr options not supported");
468 break;
696c018c
NJ		 469#endif
470#ifdef CONFIG_F2FS_FS_POSIX_ACL
4058c511
KA		 471 case Opt_acl:
472 set_opt(sbi, POSIX_ACL);
473 break;
696c018c
NJ		 474 case Opt_noacl:
475 clear_opt(sbi, POSIX_ACL);
476 break;
477#else
4058c511
KA		 478 case Opt_acl:
479 f2fs_msg(sb, KERN_INFO, "acl options not supported");
480 break;
696c018c
NJ		 481 case Opt_noacl:
482 f2fs_msg(sb, KERN_INFO, "noacl options not supported");
483 break;
484#endif
485 case Opt_active_logs:
486 if (args->from && match_int(args, &arg))
487 return -EINVAL;
488 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
489 return -EINVAL;
63189b78 490 F2FS_OPTION(sbi).active_logs = arg;
696c018c
NJ		 491 break;
492 case Opt_disable_ext_identify:
493 set_opt(sbi, DISABLE_EXT_IDENTIFY);
494 break;
8274de77
HL		 495 case Opt_inline_data:
496 set_opt(sbi, INLINE_DATA);
497 break;
5efd3c6f
CY		 498 case Opt_inline_dentry:
499 set_opt(sbi, INLINE_DENTRY);
500 break;
97c1794a
CY		 501 case Opt_noinline_dentry:
502 clear_opt(sbi, INLINE_DENTRY);
503 break;
6b4afdd7
JK		 504 case Opt_flush_merge:
505 set_opt(sbi, FLUSH_MERGE);
506 break;
69e9e427
JK		 507 case Opt_noflush_merge:
508 clear_opt(sbi, FLUSH_MERGE);
509 break;
0f7b2abd
JK		 510 case Opt_nobarrier:
511 set_opt(sbi, NOBARRIER);
512 break;
d5053a34
JK		 513 case Opt_fastboot:
514 set_opt(sbi, FASTBOOT);
515 break;
89672159
CY		 516 case Opt_extent_cache:
517 set_opt(sbi, EXTENT_CACHE);
518 break;
7daaea25
JK		 519 case Opt_noextent_cache:
520 clear_opt(sbi, EXTENT_CACHE);
521 break;
75342797
WL		 522 case Opt_noinline_data:
523 clear_opt(sbi, INLINE_DATA);
524 break;
343f40f0
CY		 525 case Opt_data_flush:
526 set_opt(sbi, DATA_FLUSH);
527 break;
7e65be49
JK		 528 case Opt_reserve_root:
529 if (args->from && match_int(args, &arg))
530 return -EINVAL;
531 if (test_opt(sbi, RESERVE_ROOT)) {
532 f2fs_msg(sb, KERN_INFO,
533 "Preserve previous reserve_root=%u",
63189b78 534 F2FS_OPTION(sbi).root_reserved_blocks);
7e65be49 535 } else {
63189b78 536 F2FS_OPTION(sbi).root_reserved_blocks = arg;
7e65be49
JK		 537 set_opt(sbi, RESERVE_ROOT);
538 }
539 break;
7c2e5963
JK		 540 case Opt_resuid:
541 if (args->from && match_int(args, &arg))
542 return -EINVAL;
543 uid = make_kuid(current_user_ns(), arg);
544 if (!uid_valid(uid)) {
545 f2fs_msg(sb, KERN_ERR,
546 "Invalid uid value %d", arg);
547 return -EINVAL;
548 }
63189b78 549 F2FS_OPTION(sbi).s_resuid = uid;
7c2e5963
JK		 550 break;
551 case Opt_resgid:
552 if (args->from && match_int(args, &arg))
553 return -EINVAL;
554 gid = make_kgid(current_user_ns(), arg);
555 if (!gid_valid(gid)) {
556 f2fs_msg(sb, KERN_ERR,
557 "Invalid gid value %d", arg);
558 return -EINVAL;
559 }
63189b78 560 F2FS_OPTION(sbi).s_resgid = gid;
7c2e5963 561 break;
36abef4e
JK		 562 case Opt_mode:
563 name = match_strdup(&args[0]);
564
565 if (!name)
566 return -ENOMEM;
567 if (strlen(name) == 8 &&
568 !strncmp(name, "adaptive", 8)) {
ccd31cb2 569 if (f2fs_sb_has_blkzoned(sb)) {
3adc57e9
DLM		 570 f2fs_msg(sb, KERN_WARNING,
571 "adaptive mode is not allowed with "
572 "zoned block device feature");
573 kfree(name);
574 return -EINVAL;
575 }
52763a4b 576 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
36abef4e
JK		 577 } else if (strlen(name) == 3 &&
578 !strncmp(name, "lfs", 3)) {
52763a4b 579 set_opt_mode(sbi, F2FS_MOUNT_LFS);
36abef4e
JK		 580 } else {
581 kfree(name);
582 return -EINVAL;
583 }
584 kfree(name);
585 break;
ec91538d
JK		 586 case Opt_io_size_bits:
587 if (args->from && match_int(args, &arg))
588 return -EINVAL;
589 if (arg > __ilog2_u32(BIO_MAX_PAGES)) {
590 f2fs_msg(sb, KERN_WARNING,
591 "Not support %d, larger than %d",
592 1 << arg, BIO_MAX_PAGES);
593 return -EINVAL;
594 }
63189b78 595 F2FS_OPTION(sbi).write_io_size_bits = arg;
ec91538d 596 break;
4cb037ec 597#ifdef CONFIG_F2FS_FAULT_INJECTION
73faec4d
JK		 598 case Opt_fault_injection:
599 if (args->from && match_int(args, &arg))
600 return -EINVAL;
d494500a
CY		 601 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE);
602 set_opt(sbi, FAULT_INJECTION);
d494500a 603 break;
4cb037ec 604
d494500a
CY		 605 case Opt_fault_type:
606 if (args->from && match_int(args, &arg))
607 return -EINVAL;
d494500a 608 f2fs_build_fault_attr(sbi, 0, arg);
0cc0dec2 609 set_opt(sbi, FAULT_INJECTION);
4cb037ec 610 break;
73faec4d 611#else
4cb037ec 612 case Opt_fault_injection:
73faec4d 613 f2fs_msg(sb, KERN_INFO,
4cb037ec 614 "fault_injection options not supported");
73faec4d 615 break;
4cb037ec
CX		 616
617 case Opt_fault_type:
618 f2fs_msg(sb, KERN_INFO,
619 "fault_type options not supported");
620 break;
621#endif
6d94c74a 622 case Opt_lazytime:
1751e8a6 623 sb->s_flags |= SB_LAZYTIME;
6d94c74a
JK		 624 break;
625 case Opt_nolazytime:
1751e8a6 626 sb->s_flags &= ~SB_LAZYTIME;
6d94c74a 627 break;
0abd675e 628#ifdef CONFIG_QUOTA
4b2414d0 629 case Opt_quota:
0abd675e
CY		 630 case Opt_usrquota:
631 set_opt(sbi, USRQUOTA);
632 break;
633 case Opt_grpquota:
634 set_opt(sbi, GRPQUOTA);
635 break;
5c57132e
CY		 636 case Opt_prjquota:
637 set_opt(sbi, PRJQUOTA);
638 break;
4b2414d0
CY		 639 case Opt_usrjquota:
640 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]);
641 if (ret)
642 return ret;
643 break;
644 case Opt_grpjquota:
645 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]);
646 if (ret)
647 return ret;
648 break;
649 case Opt_prjjquota:
650 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]);
651 if (ret)
652 return ret;
653 break;
654 case Opt_offusrjquota:
655 ret = f2fs_clear_qf_name(sb, USRQUOTA);
656 if (ret)
657 return ret;
658 break;
659 case Opt_offgrpjquota:
660 ret = f2fs_clear_qf_name(sb, GRPQUOTA);
661 if (ret)
662 return ret;
663 break;
664 case Opt_offprjjquota:
665 ret = f2fs_clear_qf_name(sb, PRJQUOTA);
666 if (ret)
667 return ret;
668 break;
669 case Opt_jqfmt_vfsold:
63189b78 670 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
4b2414d0
CY		 671 break;
672 case Opt_jqfmt_vfsv0:
63189b78 673 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
4b2414d0
CY		 674 break;
675 case Opt_jqfmt_vfsv1:
63189b78 676 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
4b2414d0
CY		 677 break;
678 case Opt_noquota:
679 clear_opt(sbi, QUOTA);
680 clear_opt(sbi, USRQUOTA);
681 clear_opt(sbi, GRPQUOTA);
682 clear_opt(sbi, PRJQUOTA);
683 break;
0abd675e 684#else
4b2414d0 685 case Opt_quota:
0abd675e
CY		 686 case Opt_usrquota:
687 case Opt_grpquota:
5c57132e 688 case Opt_prjquota:
4b2414d0
CY		 689 case Opt_usrjquota:
690 case Opt_grpjquota:
691 case Opt_prjjquota:
692 case Opt_offusrjquota:
693 case Opt_offgrpjquota:
694 case Opt_offprjjquota:
695 case Opt_jqfmt_vfsold:
696 case Opt_jqfmt_vfsv0:
697 case Opt_jqfmt_vfsv1:
698 case Opt_noquota:
0abd675e
CY		 699 f2fs_msg(sb, KERN_INFO,
700 "quota operations not supported");
701 break;
702#endif
0cdd3195
HL		 703 case Opt_whint:
704 name = match_strdup(&args[0]);
705 if (!name)
706 return -ENOMEM;
707 if (strlen(name) == 10 &&
708 !strncmp(name, "user-based", 10)) {
63189b78 709 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
0cdd3195
HL		 710 } else if (strlen(name) == 3 &&
711 !strncmp(name, "off", 3)) {
63189b78 712 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
f2e703f9
HL		 713 } else if (strlen(name) == 8 &&
714 !strncmp(name, "fs-based", 8)) {
63189b78 715 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
0cdd3195
HL		 716 } else {
717 kfree(name);
718 return -EINVAL;
719 }
720 kfree(name);
721 break;
07939627
JK		 722 case Opt_alloc:
723 name = match_strdup(&args[0]);
724 if (!name)
725 return -ENOMEM;
726
727 if (strlen(name) == 7 &&
728 !strncmp(name, "default", 7)) {
63189b78 729 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
07939627
JK		 730 } else if (strlen(name) == 5 &&
731 !strncmp(name, "reuse", 5)) {
63189b78 732 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
07939627
JK		 733 } else {
734 kfree(name);
735 return -EINVAL;
736 }
737 kfree(name);
738 break;
93cf93f1
JZ		 739 case Opt_fsync:
740 name = match_strdup(&args[0]);
741 if (!name)
742 return -ENOMEM;
743 if (strlen(name) == 5 &&
744 !strncmp(name, "posix", 5)) {
63189b78 745 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
93cf93f1
JZ		 746 } else if (strlen(name) == 6 &&
747 !strncmp(name, "strict", 6)) {
63189b78 748 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
d6290814
JK		 749 } else if (strlen(name) == 9 &&
750 !strncmp(name, "nobarrier", 9)) {
751 F2FS_OPTION(sbi).fsync_mode =
752 FSYNC_MODE_NOBARRIER;
93cf93f1
JZ		 753 } else {
754 kfree(name);
755 return -EINVAL;
756 }
757 kfree(name);
758 break;
ff62af20
SY		 759 case Opt_test_dummy_encryption:
760#ifdef CONFIG_F2FS_FS_ENCRYPTION
761 if (!f2fs_sb_has_encrypt(sb)) {
762 f2fs_msg(sb, KERN_ERR, "Encrypt feature is off");
763 return -EINVAL;
764 }
765
766 F2FS_OPTION(sbi).test_dummy_encryption = true;
767 f2fs_msg(sb, KERN_INFO,
768 "Test dummy encryption mode enabled");
769#else
770 f2fs_msg(sb, KERN_INFO,
771 "Test dummy encryption mount option ignored");
772#endif
773 break;
4354994f
DR		 774 case Opt_checkpoint:
775 name = match_strdup(&args[0]);
776 if (!name)
777 return -ENOMEM;
778
779 if (strlen(name) == 6 &&
780 !strncmp(name, "enable", 6)) {
781 clear_opt(sbi, DISABLE_CHECKPOINT);
782 } else if (strlen(name) == 7 &&
783 !strncmp(name, "disable", 7)) {
784 set_opt(sbi, DISABLE_CHECKPOINT);
785 } else {
786 kfree(name);
787 return -EINVAL;
788 }
789 kfree(name);
790 break;
696c018c
NJ		 791 default:
792 f2fs_msg(sb, KERN_ERR,
793 "Unrecognized mount option \"%s\" or missing value",
794 p);
795 return -EINVAL;
796 }
797 }
4b2414d0
CY		 798#ifdef CONFIG_QUOTA
799 if (f2fs_check_quota_options(sbi))
800 return -EINVAL;
00960c2c
SY		 801#else
802 if (f2fs_sb_has_quota_ino(sbi->sb) && !f2fs_readonly(sbi->sb)) {
803 f2fs_msg(sbi->sb, KERN_INFO,
804 "Filesystem with quota feature cannot be mounted RDWR "
805 "without CONFIG_QUOTA");
806 return -EINVAL;
807 }
4ddc1b28
CY		 808 if (f2fs_sb_has_project_quota(sbi->sb) && !f2fs_readonly(sbi->sb)) {
809 f2fs_msg(sb, KERN_ERR,
810 "Filesystem with project quota feature cannot be "
811 "mounted RDWR without CONFIG_QUOTA");
812 return -EINVAL;
813 }
4b2414d0 814#endif
ec91538d
JK		 815
816 if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) {
817 f2fs_msg(sb, KERN_ERR,
818 "Should set mode=lfs with %uKB-sized IO",
819 F2FS_IO_SIZE_KB(sbi));
820 return -EINVAL;
821 }
6afc662e
CY		 822
823 if (test_opt(sbi, INLINE_XATTR_SIZE)) {
4d817ae0
CY		 824 if (!f2fs_sb_has_extra_attr(sb) ||
825 !f2fs_sb_has_flexible_inline_xattr(sb)) {
826 f2fs_msg(sb, KERN_ERR,
827 "extra_attr or flexible_inline_xattr "
828 "feature is off");
829 return -EINVAL;
830 }
6afc662e
CY		 831 if (!test_opt(sbi, INLINE_XATTR)) {
832 f2fs_msg(sb, KERN_ERR,
833 "inline_xattr_size option should be "
834 "set with inline_xattr option");
835 return -EINVAL;
836 }
63189b78
CY		 837 if (!F2FS_OPTION(sbi).inline_xattr_size ||
838 F2FS_OPTION(sbi).inline_xattr_size >=
839 DEF_ADDRS_PER_INODE -
6afc662e
CY		 840 F2FS_TOTAL_EXTRA_ATTR_SIZE -
841 DEF_INLINE_RESERVED_SIZE -
842 DEF_MIN_INLINE_SIZE) {
843 f2fs_msg(sb, KERN_ERR,
844 "inline xattr size is out of range");
845 return -EINVAL;
846 }
847 }
0cdd3195 848
4354994f
DR		 849 if (test_opt(sbi, DISABLE_CHECKPOINT) && test_opt(sbi, LFS)) {
850 f2fs_msg(sb, KERN_ERR,
851 "LFS not compatible with checkpoint=disable\n");
852 return -EINVAL;
853 }
854
0cdd3195
HL		 855 /* Not pass down write hints if the number of active logs is lesser
856 * than NR_CURSEG_TYPE.
857 */
63189b78
CY		 858 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
859 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
696c018c
NJ		 860 return 0;
861}
862
aff063e2
JK		 863static struct inode *f2fs_alloc_inode(struct super_block *sb)
864{
865 struct f2fs_inode_info *fi;
866
a0acdfe0 867 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO);
aff063e2
JK		 868 if (!fi)
869 return NULL;
870
871 init_once((void *) fi);
872
434720fa 873 /* Initialize f2fs-specific inode info */
204706c7 874 atomic_set(&fi->dirty_pages, 0);
d928bfbf 875 init_rwsem(&fi->i_sem);
2710fd7e 876 INIT_LIST_HEAD(&fi->dirty_list);
0f18b462 877 INIT_LIST_HEAD(&fi->gdirty_list);
57864ae5 878 INIT_LIST_HEAD(&fi->inmem_ilist);
88b88a66
JK		 879 INIT_LIST_HEAD(&fi->inmem_pages);
880 mutex_init(&fi->inmem_lock);
b2532c69
CY		 881 init_rwsem(&fi->i_gc_rwsem[READ]);
882 init_rwsem(&fi->i_gc_rwsem[WRITE]);
5a3a2d83 883 init_rwsem(&fi->i_mmap_sem);
27161f13 884 init_rwsem(&fi->i_xattr_sem);
aff063e2 885
ab9fa662
JK		 886 /* Will be used by directory only */
887 fi->i_dir_level = F2FS_SB(sb)->dir_level;
f2470371 888
aff063e2
JK		 889 return &fi->vfs_inode;
890}
891
531ad7d5
JK		 892static int f2fs_drop_inode(struct inode *inode)
893{
b8d96a30 894 int ret;
531ad7d5
JK		 895 /*
896 * This is to avoid a deadlock condition like below.
897 * writeback_single_inode(inode)
898 * - f2fs_write_data_page
899 * - f2fs_gc -> iput -> evict
900 * - inode_wait_for_writeback(inode)
901 */
0f18b462 902 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) {
06e1bc05 903 if (!inode->i_nlink && !is_bad_inode(inode)) {
3e72f721
JK		 904 /* to avoid evict_inode call simultaneously */
905 atomic_inc(&inode->i_count);
06e1bc05
JK		 906 spin_unlock(&inode->i_lock);
907
908 /* some remained atomic pages should discarded */
909 if (f2fs_is_atomic_file(inode))
4d57b86d 910 f2fs_drop_inmem_pages(inode);
06e1bc05 911
3e72f721
JK		 912 /* should remain fi->extent_tree for writepage */
913 f2fs_destroy_extent_node(inode);
914
06e1bc05 915 sb_start_intwrite(inode->i_sb);
fc9581c8 916 f2fs_i_size_write(inode, 0);
06e1bc05
JK		 917
918 if (F2FS_HAS_BLOCKS(inode))
9a449e9c 919 f2fs_truncate(inode);
06e1bc05
JK		 920
921 sb_end_intwrite(inode->i_sb);
922
06e1bc05 923 spin_lock(&inode->i_lock);
3e72f721 924 atomic_dec(&inode->i_count);
06e1bc05 925 }
b8d96a30 926 trace_f2fs_drop_inode(inode, 0);
531ad7d5 927 return 0;
06e1bc05 928 }
b8d96a30
HP		 929 ret = generic_drop_inode(inode);
930 trace_f2fs_drop_inode(inode, ret);
931 return ret;
531ad7d5
JK		 932}
933
7c45729a 934int f2fs_inode_dirtied(struct inode *inode, bool sync)
b3783873 935{
0f18b462 936 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7c45729a 937 int ret = 0;
0f18b462 938
0f18b462
JK		 939 spin_lock(&sbi->inode_lock[DIRTY_META]);
940 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
7c45729a
JK		 941 ret = 1;
942 } else {
943 set_inode_flag(inode, FI_DIRTY_INODE);
944 stat_inc_dirty_inode(sbi, DIRTY_META);
0f18b462 945 }
7c45729a
JK		 946 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) {
947 list_add_tail(&F2FS_I(inode)->gdirty_list,
0f18b462 948 &sbi->inode_list[DIRTY_META]);
7c45729a
JK		 949 inc_page_count(sbi, F2FS_DIRTY_IMETA);
950 }
338bbfa0 951 spin_unlock(&sbi->inode_lock[DIRTY_META]);
7c45729a 952 return ret;
0f18b462
JK		 953}
954
955void f2fs_inode_synced(struct inode *inode)
956{
957 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
958
959 spin_lock(&sbi->inode_lock[DIRTY_META]);
960 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) {
961 spin_unlock(&sbi->inode_lock[DIRTY_META]);
962 return;
963 }
7c45729a
JK		 964 if (!list_empty(&F2FS_I(inode)->gdirty_list)) {
965 list_del_init(&F2FS_I(inode)->gdirty_list);
966 dec_page_count(sbi, F2FS_DIRTY_IMETA);
967 }
0f18b462 968 clear_inode_flag(inode, FI_DIRTY_INODE);
26de9b11 969 clear_inode_flag(inode, FI_AUTO_RECOVER);
0f18b462 970 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
338bbfa0 971 spin_unlock(&sbi->inode_lock[DIRTY_META]);
b3783873
JK		 972}
973
b56ab837
JK		 974/*
975 * f2fs_dirty_inode() is called from __mark_inode_dirty()
976 *
977 * We should call set_dirty_inode to write the dirty inode through write_inode.
978 */
979static void f2fs_dirty_inode(struct inode *inode, int flags)
980{
981 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
982
983 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
984 inode->i_ino == F2FS_META_INO(sbi))
985 return;
986
987 if (flags == I_DIRTY_TIME)
988 return;
989
990 if (is_inode_flag_set(inode, FI_AUTO_RECOVER))
991 clear_inode_flag(inode, FI_AUTO_RECOVER);
992
7c45729a 993 f2fs_inode_dirtied(inode, false);
b56ab837
JK		 994}
995
aff063e2
JK		 996static void f2fs_i_callback(struct rcu_head *head)
997{
998 struct inode *inode = container_of(head, struct inode, i_rcu);
999 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode));
1000}
1001
25ca923b 1002static void f2fs_destroy_inode(struct inode *inode)
aff063e2
JK		 1003{
1004 call_rcu(&inode->i_rcu, f2fs_i_callback);
1005}
1006
523be8a6
JK		 1007static void destroy_percpu_info(struct f2fs_sb_info *sbi)
1008{
41382ec4 1009 percpu_counter_destroy(&sbi->alloc_valid_block_count);
513c5f37 1010 percpu_counter_destroy(&sbi->total_valid_inode_count);
523be8a6
JK		 1011}
1012
3c62be17
JK		 1013static void destroy_device_list(struct f2fs_sb_info *sbi)
1014{
1015 int i;
1016
1017 for (i = 0; i < sbi->s_ndevs; i++) {
1018 blkdev_put(FDEV(i).bdev, FMODE_EXCL);
1019#ifdef CONFIG_BLK_DEV_ZONED
1020 kfree(FDEV(i).blkz_type);
1021#endif
1022 }
1023 kfree(sbi->devs);
1024}
1025
aff063e2
JK		 1026static void f2fs_put_super(struct super_block *sb)
1027{
1028 struct f2fs_sb_info *sbi = F2FS_SB(sb);
a398101a 1029 int i;
cf5c759f 1030 bool dropped;
aff063e2 1031
0abd675e 1032 f2fs_quota_off_umount(sb);
aff063e2 1033
2658e50d
JK		 1034 /* prevent remaining shrinker jobs */
1035 mutex_lock(&sbi->umount_mutex);
1036
85dc2f2c
JK		 1037 /*
1038 * We don't need to do checkpoint when superblock is clean.
1039 * But, the previous checkpoint was not done by umount, it needs to do
1040 * clean checkpoint again.
1041 */
4354994f
DR		 1042 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
1043 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) {
75ab4cb8
JK		 1044 struct cp_control cpc = {
1045 .reason = CP_UMOUNT,
1046 };
4d57b86d 1047 f2fs_write_checkpoint(sbi, &cpc);
75ab4cb8 1048 }
aff063e2 1049
4e6a8d9b 1050 /* be sure to wait for any on-going discard commands */
cf5c759f 1051 dropped = f2fs_wait_discard_bios(sbi);
4e6a8d9b 1052
7d20c8ab
CY		 1053 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) &&
1054 !sbi->discard_blks && !dropped) {
1f43e2ad
CY		 1055 struct cp_control cpc = {
1056 .reason = CP_UMOUNT | CP_TRIMMED,
1057 };
4d57b86d 1058 f2fs_write_checkpoint(sbi, &cpc);
1f43e2ad
CY		 1059 }
1060
4d57b86d 1061 /* f2fs_write_checkpoint can update stat informaion */
eca616f8
JK		 1062 f2fs_destroy_stats(sbi);
1063
cf779cab
JK		 1064 /*
1065 * normally superblock is clean, so we need to release this.
1066 * In addition, EIO will skip do checkpoint, we need this as well.
1067 */
4d57b86d 1068 f2fs_release_ino_entry(sbi, true);
6f12ac25 1069
2658e50d
JK		 1070 f2fs_leave_shrinker(sbi);
1071 mutex_unlock(&sbi->umount_mutex);
1072
17c19120 1073 /* our cp_error case, we can wait for any writeback page */
b9109b0e 1074 f2fs_flush_merged_writes(sbi);
17c19120 1075
50fa53ec
CY		 1076 f2fs_wait_on_all_pages_writeback(sbi);
1077
1078 f2fs_bug_on(sbi, sbi->fsync_node_num);
1079
aff063e2
JK		 1080 iput(sbi->node_inode);
1081 iput(sbi->meta_inode);
1082
1083 /* destroy f2fs internal modules */
4d57b86d
CY		 1084 f2fs_destroy_node_manager(sbi);
1085 f2fs_destroy_segment_manager(sbi);
aff063e2
JK		 1086
1087 kfree(sbi->ckpt);
a398101a 1088
dc6b2055 1089 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 1090
1091 sb->s_fs_info = NULL;
43b6573b
KM		 1092 if (sbi->s_chksum_driver)
1093 crypto_free_shash(sbi->s_chksum_driver);
b39f0de2 1094 kfree(sbi->raw_super);
523be8a6 1095
3c62be17 1096 destroy_device_list(sbi);
b6895e8f 1097 mempool_destroy(sbi->write_io_dummy);
4b2414d0
CY		 1098#ifdef CONFIG_QUOTA
1099 for (i = 0; i < MAXQUOTAS; i++)
63189b78 1100 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 1101#endif
523be8a6 1102 destroy_percpu_info(sbi);
a912b54d
JK		 1103 for (i = 0; i < NR_PAGE_TYPE; i++)
1104 kfree(sbi->write_io[i]);
aff063e2
JK		 1105 kfree(sbi);
1106}
1107
1108int f2fs_sync_fs(struct super_block *sb, int sync)
1109{
1110 struct f2fs_sb_info *sbi = F2FS_SB(sb);
c34f42e2 1111 int err = 0;
aff063e2 1112
1f227a3e
JK		 1113 if (unlikely(f2fs_cp_error(sbi)))
1114 return 0;
4354994f
DR		 1115 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1116 return 0;
1f227a3e 1117
a2a4a7e4
NJ		 1118 trace_f2fs_sync_fs(sb, sync);
1119
4b2414d0
CY		 1120 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1121 return -EAGAIN;
1122
b7473754 1123 if (sync) {
d5053a34
JK		 1124 struct cp_control cpc;
1125
119ee914
JK		 1126 cpc.reason = __get_cp_reason(sbi);
1127
b7473754 1128 mutex_lock(&sbi->gc_mutex);
4d57b86d 1129 err = f2fs_write_checkpoint(sbi, &cpc);
b7473754 1130 mutex_unlock(&sbi->gc_mutex);
b7473754 1131 }
05ca3632 1132 f2fs_trace_ios(NULL, 1);
aff063e2 1133
c34f42e2 1134 return err;
aff063e2
JK		 1135}
1136
d6212a5f
CL		 1137static int f2fs_freeze(struct super_block *sb)
1138{
77888c1e 1139 if (f2fs_readonly(sb))
d6212a5f
CL		 1140 return 0;
1141
b4b9d34c
JK		 1142 /* IO error happened before */
1143 if (unlikely(f2fs_cp_error(F2FS_SB(sb))))
1144 return -EIO;
1145
1146 /* must be clean, since sync_filesystem() was already called */
1147 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
1148 return -EINVAL;
1149 return 0;
d6212a5f
CL		 1150}
1151
1152static int f2fs_unfreeze(struct super_block *sb)
1153{
1154 return 0;
1155}
1156
ddc34e32
CY		 1157#ifdef CONFIG_QUOTA
1158static int f2fs_statfs_project(struct super_block *sb,
1159 kprojid_t projid, struct kstatfs *buf)
1160{
1161 struct kqid qid;
1162 struct dquot *dquot;
1163 u64 limit;
1164 u64 curblock;
1165
1166 qid = make_kqid_projid(projid);
1167 dquot = dqget(sb, qid);
1168 if (IS_ERR(dquot))
1169 return PTR_ERR(dquot);
955ac6e5 1170 spin_lock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1171
1172 limit = (dquot->dq_dqb.dqb_bsoftlimit ?
1173 dquot->dq_dqb.dqb_bsoftlimit :
1174 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
1175 if (limit && buf->f_blocks > limit) {
1176 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
1177 buf->f_blocks = limit;
1178 buf->f_bfree = buf->f_bavail =
1179 (buf->f_blocks > curblock) ?
1180 (buf->f_blocks - curblock) : 0;
1181 }
1182
1183 limit = dquot->dq_dqb.dqb_isoftlimit ?
1184 dquot->dq_dqb.dqb_isoftlimit :
1185 dquot->dq_dqb.dqb_ihardlimit;
1186 if (limit && buf->f_files > limit) {
1187 buf->f_files = limit;
1188 buf->f_ffree =
1189 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
1190 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
1191 }
1192
955ac6e5 1193 spin_unlock(&dquot->dq_dqb_lock);
ddc34e32
CY		 1194 dqput(dquot);
1195 return 0;
1196}
1197#endif
1198
aff063e2
JK		 1199static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
1200{
1201 struct super_block *sb = dentry->d_sb;
1202 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1203 u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
f66c027e 1204 block_t total_count, user_block_count, start_count;
0cc091d0 1205 u64 avail_node_count;
aff063e2
JK		 1206
1207 total_count = le64_to_cpu(sbi->raw_super->block_count);
1208 user_block_count = sbi->user_block_count;
1209 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr);
aff063e2
JK		 1210 buf->f_type = F2FS_SUPER_MAGIC;
1211 buf->f_bsize = sbi->blocksize;
1212
1213 buf->f_blocks = total_count - start_count;
f66c027e 1214 buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
80d42145 1215 sbi->current_reserved_blocks;
4354994f
DR		 1216 if (unlikely(buf->f_bfree <= sbi->unusable_block_count))
1217 buf->f_bfree = 0;
1218 else
1219 buf->f_bfree -= sbi->unusable_block_count;
1220
63189b78
CY		 1221 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
1222 buf->f_bavail = buf->f_bfree -
1223 F2FS_OPTION(sbi).root_reserved_blocks;
7e65be49
JK		 1224 else
1225 buf->f_bavail = 0;
aff063e2 1226
292c196a
CY		 1227 avail_node_count = sbi->total_node_count - sbi->nquota_files -
1228 F2FS_RESERVED_NODE_NUM;
0cc091d0
JK		 1229
1230 if (avail_node_count > user_block_count) {
1231 buf->f_files = user_block_count;
1232 buf->f_ffree = buf->f_bavail;
1233 } else {
1234 buf->f_files = avail_node_count;
1235 buf->f_ffree = min(avail_node_count - valid_node_count(sbi),
1236 buf->f_bavail);
1237 }
aff063e2 1238
5a20d339 1239 buf->f_namelen = F2FS_NAME_LEN;
aff063e2
JK		 1240 buf->f_fsid.val[0] = (u32)id;
1241 buf->f_fsid.val[1] = (u32)(id >> 32);
1242
ddc34e32
CY		 1243#ifdef CONFIG_QUOTA
1244 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) &&
1245 sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
1246 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf);
1247 }
1248#endif
aff063e2
JK		 1249 return 0;
1250}
1251
4b2414d0
CY		 1252static inline void f2fs_show_quota_options(struct seq_file *seq,
1253 struct super_block *sb)
1254{
1255#ifdef CONFIG_QUOTA
1256 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1257
63189b78 1258 if (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1259 char *fmtname = "";
1260
63189b78 1261 switch (F2FS_OPTION(sbi).s_jquota_fmt) {
4b2414d0
CY		 1262 case QFMT_VFS_OLD:
1263 fmtname = "vfsold";
1264 break;
1265 case QFMT_VFS_V0:
1266 fmtname = "vfsv0";
1267 break;
1268 case QFMT_VFS_V1:
1269 fmtname = "vfsv1";
1270 break;
1271 }
1272 seq_printf(seq, ",jqfmt=%s", fmtname);
1273 }
1274
63189b78
CY		 1275 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
1276 seq_show_option(seq, "usrjquota",
1277 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
4b2414d0 1278
63189b78
CY		 1279 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
1280 seq_show_option(seq, "grpjquota",
1281 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
4b2414d0 1282
63189b78
CY		 1283 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
1284 seq_show_option(seq, "prjjquota",
1285 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
4b2414d0
CY		 1286#endif
1287}
1288
aff063e2
JK		 1289static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
1290{
1291 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
1292
6aefd93b
JK		 1293 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
1294 if (test_opt(sbi, FORCE_FG_GC))
1295 seq_printf(seq, ",background_gc=%s", "sync");
1296 else
1297 seq_printf(seq, ",background_gc=%s", "on");
1298 } else {
696c018c 1299 seq_printf(seq, ",background_gc=%s", "off");
6aefd93b 1300 }
aff063e2
JK		 1301 if (test_opt(sbi, DISABLE_ROLL_FORWARD))
1302 seq_puts(seq, ",disable_roll_forward");
1303 if (test_opt(sbi, DISCARD))
1304 seq_puts(seq, ",discard");
1305 if (test_opt(sbi, NOHEAP))
7a20b8a6
JK		 1306 seq_puts(seq, ",no_heap");
1307 else
1308 seq_puts(seq, ",heap");
aff063e2
JK		 1309#ifdef CONFIG_F2FS_FS_XATTR
1310 if (test_opt(sbi, XATTR_USER))
1311 seq_puts(seq, ",user_xattr");
1312 else
1313 seq_puts(seq, ",nouser_xattr");
444c580f
JK		 1314 if (test_opt(sbi, INLINE_XATTR))
1315 seq_puts(seq, ",inline_xattr");
23cf7212
CY		 1316 else
1317 seq_puts(seq, ",noinline_xattr");
6afc662e
CY		 1318 if (test_opt(sbi, INLINE_XATTR_SIZE))
1319 seq_printf(seq, ",inline_xattr_size=%u",
63189b78 1320 F2FS_OPTION(sbi).inline_xattr_size);
aff063e2
JK		 1321#endif
1322#ifdef CONFIG_F2FS_FS_POSIX_ACL
1323 if (test_opt(sbi, POSIX_ACL))
1324 seq_puts(seq, ",acl");
1325 else
1326 seq_puts(seq, ",noacl");
1327#endif
1328 if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
aa43507f 1329 seq_puts(seq, ",disable_ext_identify");
8274de77
HL		 1330 if (test_opt(sbi, INLINE_DATA))
1331 seq_puts(seq, ",inline_data");
75342797
WL		 1332 else
1333 seq_puts(seq, ",noinline_data");
5efd3c6f
CY		 1334 if (test_opt(sbi, INLINE_DENTRY))
1335 seq_puts(seq, ",inline_dentry");
97c1794a
CY		 1336 else
1337 seq_puts(seq, ",noinline_dentry");
b270ad6f 1338 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
6b4afdd7 1339 seq_puts(seq, ",flush_merge");
0f7b2abd
JK		 1340 if (test_opt(sbi, NOBARRIER))
1341 seq_puts(seq, ",nobarrier");
d5053a34
JK		 1342 if (test_opt(sbi, FASTBOOT))
1343 seq_puts(seq, ",fastboot");
89672159
CY		 1344 if (test_opt(sbi, EXTENT_CACHE))
1345 seq_puts(seq, ",extent_cache");
7daaea25
JK		 1346 else
1347 seq_puts(seq, ",noextent_cache");
343f40f0
CY		 1348 if (test_opt(sbi, DATA_FLUSH))
1349 seq_puts(seq, ",data_flush");
36abef4e
JK		 1350
1351 seq_puts(seq, ",mode=");
1352 if (test_opt(sbi, ADAPTIVE))
1353 seq_puts(seq, "adaptive");
1354 else if (test_opt(sbi, LFS))
1355 seq_puts(seq, "lfs");
63189b78 1356 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
7e65be49 1357 if (test_opt(sbi, RESERVE_ROOT))
7c2e5963 1358 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
63189b78
CY		 1359 F2FS_OPTION(sbi).root_reserved_blocks,
1360 from_kuid_munged(&init_user_ns,
1361 F2FS_OPTION(sbi).s_resuid),
1362 from_kgid_munged(&init_user_ns,
1363 F2FS_OPTION(sbi).s_resgid));
ec91538d 1364 if (F2FS_IO_SIZE_BITS(sbi))
c6b1867b
CX		 1365 seq_printf(seq, ",io_bits=%u",
1366 F2FS_OPTION(sbi).write_io_size_bits);
0cc0dec2 1367#ifdef CONFIG_F2FS_FAULT_INJECTION
d494500a 1368 if (test_opt(sbi, FAULT_INJECTION)) {
44529f89 1369 seq_printf(seq, ",fault_injection=%u",
63189b78 1370 F2FS_OPTION(sbi).fault_info.inject_rate);
d494500a
CY		 1371 seq_printf(seq, ",fault_type=%u",
1372 F2FS_OPTION(sbi).fault_info.inject_type);
1373 }
0cc0dec2 1374#endif
0abd675e 1375#ifdef CONFIG_QUOTA
4b2414d0
CY		 1376 if (test_opt(sbi, QUOTA))
1377 seq_puts(seq, ",quota");
0abd675e
CY		 1378 if (test_opt(sbi, USRQUOTA))
1379 seq_puts(seq, ",usrquota");
1380 if (test_opt(sbi, GRPQUOTA))
1381 seq_puts(seq, ",grpquota");
5c57132e
CY		 1382 if (test_opt(sbi, PRJQUOTA))
1383 seq_puts(seq, ",prjquota");
0cc0dec2 1384#endif
4b2414d0 1385 f2fs_show_quota_options(seq, sbi->sb);
63189b78 1386 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
0cdd3195 1387 seq_printf(seq, ",whint_mode=%s", "user-based");
63189b78 1388 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
f2e703f9 1389 seq_printf(seq, ",whint_mode=%s", "fs-based");
ff62af20
SY		 1390#ifdef CONFIG_F2FS_FS_ENCRYPTION
1391 if (F2FS_OPTION(sbi).test_dummy_encryption)
1392 seq_puts(seq, ",test_dummy_encryption");
1393#endif
aff063e2 1394
63189b78 1395 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
07939627 1396 seq_printf(seq, ",alloc_mode=%s", "default");
63189b78 1397 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
07939627 1398 seq_printf(seq, ",alloc_mode=%s", "reuse");
93cf93f1 1399
4354994f
DR		 1400 if (test_opt(sbi, DISABLE_CHECKPOINT))
1401 seq_puts(seq, ",checkpoint=disable");
1402
63189b78 1403 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
93cf93f1 1404 seq_printf(seq, ",fsync_mode=%s", "posix");
63189b78 1405 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
93cf93f1 1406 seq_printf(seq, ",fsync_mode=%s", "strict");
dc132802
ST		 1407 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
1408 seq_printf(seq, ",fsync_mode=%s", "nobarrier");
aff063e2
JK		 1409 return 0;
1410}
1411
498c5e9f
YH		 1412static void default_options(struct f2fs_sb_info *sbi)
1413{
1414 /* init some FS parameters */
63189b78
CY		 1415 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
1416 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
1417 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
1418 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
1419 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
ff62af20 1420 F2FS_OPTION(sbi).test_dummy_encryption = false;
0aa7e0f8
CY		 1421 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
1422 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
498c5e9f
YH		 1423
1424 set_opt(sbi, BG_GC);
39133a50 1425 set_opt(sbi, INLINE_XATTR);
498c5e9f 1426 set_opt(sbi, INLINE_DATA);
97c1794a 1427 set_opt(sbi, INLINE_DENTRY);
3e72f721 1428 set_opt(sbi, EXTENT_CACHE);
7a20b8a6 1429 set_opt(sbi, NOHEAP);
4354994f 1430 clear_opt(sbi, DISABLE_CHECKPOINT);
1751e8a6 1431 sbi->sb->s_flags |= SB_LAZYTIME;
69e9e427 1432 set_opt(sbi, FLUSH_MERGE);
7d20c8ab 1433 set_opt(sbi, DISCARD);
a39e5365
CY		 1434 if (f2fs_sb_has_blkzoned(sbi->sb))
1435 set_opt_mode(sbi, F2FS_MOUNT_LFS);
1436 else
52763a4b 1437 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
498c5e9f
YH		 1438
1439#ifdef CONFIG_F2FS_FS_XATTR
1440 set_opt(sbi, XATTR_USER);
1441#endif
1442#ifdef CONFIG_F2FS_FS_POSIX_ACL
1443 set_opt(sbi, POSIX_ACL);
1444#endif
36dbd328 1445
d494500a 1446 f2fs_build_fault_attr(sbi, 0, 0);
498c5e9f
YH		 1447}
1448
ea676733
JK		 1449#ifdef CONFIG_QUOTA
1450static int f2fs_enable_quotas(struct super_block *sb);
1451#endif
4354994f
DR		 1452
1453static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
1454{
1455 struct cp_control cpc;
1456 int err;
1457
1458 sbi->sb->s_flags |= SB_ACTIVE;
1459
1460 mutex_lock(&sbi->gc_mutex);
1461 f2fs_update_time(sbi, DISABLE_TIME);
1462
1463 while (!f2fs_time_over(sbi, DISABLE_TIME)) {
1464 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1465 if (err == -ENODATA)
1466 break;
1467 if (err && err != -EAGAIN) {
1468 mutex_unlock(&sbi->gc_mutex);
1469 return err;
1470 }
1471 }
1472 mutex_unlock(&sbi->gc_mutex);
1473
1474 err = sync_filesystem(sbi->sb);
1475 if (err)
1476 return err;
1477
1478 if (f2fs_disable_cp_again(sbi))
1479 return -EAGAIN;
1480
1481 mutex_lock(&sbi->gc_mutex);
1482 cpc.reason = CP_PAUSE;
1483 set_sbi_flag(sbi, SBI_CP_DISABLED);
1484 f2fs_write_checkpoint(sbi, &cpc);
1485
1486 sbi->unusable_block_count = 0;
1487 mutex_unlock(&sbi->gc_mutex);
1488 return 0;
1489}
1490
1491static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi)
1492{
1493 mutex_lock(&sbi->gc_mutex);
1494 f2fs_dirty_to_prefree(sbi);
1495
1496 clear_sbi_flag(sbi, SBI_CP_DISABLED);
1497 set_sbi_flag(sbi, SBI_IS_DIRTY);
1498 mutex_unlock(&sbi->gc_mutex);
1499
1500 f2fs_sync_fs(sbi->sb, 1);
1501}
1502
696c018c
NJ		 1503static int f2fs_remount(struct super_block *sb, int *flags, char *data)
1504{
1505 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1506 struct f2fs_mount_info org_mount_opt;
0abd675e 1507 unsigned long old_sb_flags;
63189b78 1508 int err;
876dc59e
GZ		 1509 bool need_restart_gc = false;
1510 bool need_stop_gc = false;
9cd81ce3 1511 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
4354994f
DR		 1512 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
1513 bool checkpoint_changed;
4b2414d0 1514#ifdef CONFIG_QUOTA
4b2414d0
CY		 1515 int i, j;
1516#endif
696c018c
NJ		 1517
1518 /*
1519 * Save the old mount options in case we
1520 * need to restore them.
1521 */
1522 org_mount_opt = sbi->mount_opt;
0abd675e 1523 old_sb_flags = sb->s_flags;
696c018c 1524
4b2414d0 1525#ifdef CONFIG_QUOTA
63189b78 1526 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
4b2414d0 1527 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1528 if (F2FS_OPTION(sbi).s_qf_names[i]) {
1529 org_mount_opt.s_qf_names[i] =
1530 kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
1531 GFP_KERNEL);
1532 if (!org_mount_opt.s_qf_names[i]) {
4b2414d0 1533 for (j = 0; j < i; j++)
63189b78 1534 kfree(org_mount_opt.s_qf_names[j]);
4b2414d0
CY		 1535 return -ENOMEM;
1536 }
1537 } else {
63189b78 1538 org_mount_opt.s_qf_names[i] = NULL;
4b2414d0
CY		 1539 }
1540 }
1541#endif
1542
df728b0f 1543 /* recover superblocks we couldn't write due to previous RO mount */
1751e8a6 1544 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
df728b0f
JK		 1545 err = f2fs_commit_super(sbi, false);
1546 f2fs_msg(sb, KERN_INFO,
1547 "Try to recover all the superblocks, ret: %d", err);
1548 if (!err)
1549 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE);
1550 }
1551
498c5e9f 1552 default_options(sbi);
26666c8a 1553
696c018c
NJ		 1554 /* parse mount options */
1555 err = parse_options(sb, data);
1556 if (err)
1557 goto restore_opts;
4354994f
DR		 1558 checkpoint_changed =
1559 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT);
696c018c
NJ		 1560
1561 /*
1562 * Previous and new state of filesystem is RO,
876dc59e 1563 * so skip checking GC and FLUSH_MERGE conditions.
696c018c 1564 */
1751e8a6 1565 if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
696c018c
NJ		 1566 goto skip;
1567
ea676733 1568#ifdef CONFIG_QUOTA
1751e8a6 1569 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
0abd675e
CY		 1570 err = dquot_suspend(sb, -1);
1571 if (err < 0)
1572 goto restore_opts;
4354994f 1573 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) {
0abd675e 1574 /* dquot_resume needs RW */
1751e8a6 1575 sb->s_flags &= ~SB_RDONLY;
ea676733
JK		 1576 if (sb_any_quota_suspended(sb)) {
1577 dquot_resume(sb, -1);
1578 } else if (f2fs_sb_has_quota_ino(sb)) {
1579 err = f2fs_enable_quotas(sb);
1580 if (err)
1581 goto restore_opts;
1582 }
0abd675e 1583 }
ea676733 1584#endif
9cd81ce3
CY		 1585 /* disallow enable/disable extent_cache dynamically */
1586 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) {
1587 err = -EINVAL;
1588 f2fs_msg(sbi->sb, KERN_WARNING,
1589 "switch extent_cache option is not allowed");
1590 goto restore_opts;
1591 }
1592
4354994f
DR		 1593 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
1594 err = -EINVAL;
1595 f2fs_msg(sbi->sb, KERN_WARNING,
1596 "disabling checkpoint not compatible with read-only");
1597 goto restore_opts;
1598 }
1599
696c018c
NJ		 1600 /*
1601 * We stop the GC thread if FS is mounted as RO
1602 * or if background_gc = off is passed in mount
1603 * option. Also sync the filesystem.
1604 */
1751e8a6 1605 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) {
696c018c 1606 if (sbi->gc_thread) {
4d57b86d 1607 f2fs_stop_gc_thread(sbi);
876dc59e 1608 need_restart_gc = true;
696c018c 1609 }
aba291b3 1610 } else if (!sbi->gc_thread) {
4d57b86d 1611 err = f2fs_start_gc_thread(sbi);
696c018c
NJ		 1612 if (err)
1613 goto restore_opts;
876dc59e
GZ		 1614 need_stop_gc = true;
1615 }
1616
63189b78
CY		 1617 if (*flags & SB_RDONLY ||
1618 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
faa0e55b
JK		 1619 writeback_inodes_sb(sb, WB_REASON_SYNC);
1620 sync_inodes_sb(sb);
1621
1622 set_sbi_flag(sbi, SBI_IS_DIRTY);
1623 set_sbi_flag(sbi, SBI_IS_CLOSE);
1624 f2fs_sync_fs(sb, 1);
1625 clear_sbi_flag(sbi, SBI_IS_CLOSE);
1626 }
1627
4354994f
DR		 1628 if (checkpoint_changed) {
1629 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
1630 err = f2fs_disable_checkpoint(sbi);
1631 if (err)
1632 goto restore_gc;
1633 } else {
1634 f2fs_enable_checkpoint(sbi);
1635 }
1636 }
1637
876dc59e
GZ		 1638 /*
1639 * We stop issue flush thread if FS is mounted as RO
1640 * or if flush_merge is not passed in mount option.
1641 */
1751e8a6 1642 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
5eba8c5d 1643 clear_opt(sbi, FLUSH_MERGE);
4d57b86d 1644 f2fs_destroy_flush_cmd_control(sbi, false);
5eba8c5d 1645 } else {
4d57b86d 1646 err = f2fs_create_flush_cmd_control(sbi);
2163d198 1647 if (err)
a688b9d9 1648 goto restore_gc;
696c018c
NJ		 1649 }
1650skip:
4b2414d0
CY		 1651#ifdef CONFIG_QUOTA
1652 /* Release old quota file names */
1653 for (i = 0; i < MAXQUOTAS; i++)
63189b78 1654 kfree(org_mount_opt.s_qf_names[i]);
4b2414d0 1655#endif
696c018c 1656 /* Update the POSIXACL Flag */
1751e8a6
LT		 1657 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
1658 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
df728b0f 1659
7e65be49 1660 limit_reserve_root(sbi);
095680f2 1661 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
696c018c 1662 return 0;
876dc59e
GZ		 1663restore_gc:
1664 if (need_restart_gc) {
4d57b86d 1665 if (f2fs_start_gc_thread(sbi))
876dc59e 1666 f2fs_msg(sbi->sb, KERN_WARNING,
e1c42045 1667 "background gc thread has stopped");
876dc59e 1668 } else if (need_stop_gc) {
4d57b86d 1669 f2fs_stop_gc_thread(sbi);
876dc59e 1670 }
696c018c 1671restore_opts:
4b2414d0 1672#ifdef CONFIG_QUOTA
63189b78 1673 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
4b2414d0 1674 for (i = 0; i < MAXQUOTAS; i++) {
63189b78
CY		 1675 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
1676 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
4b2414d0
CY		 1677 }
1678#endif
696c018c 1679 sbi->mount_opt = org_mount_opt;
0abd675e 1680 sb->s_flags = old_sb_flags;
696c018c
NJ		 1681 return err;
1682}
1683
0abd675e
CY		 1684#ifdef CONFIG_QUOTA
1685/* Read data from quotafile */
1686static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
1687 size_t len, loff_t off)
1688{
1689 struct inode *inode = sb_dqopt(sb)->files[type];
1690 struct address_space *mapping = inode->i_mapping;
1691 block_t blkidx = F2FS_BYTES_TO_BLK(off);
1692 int offset = off & (sb->s_blocksize - 1);
1693 int tocopy;
1694 size_t toread;
1695 loff_t i_size = i_size_read(inode);
1696 struct page *page;
1697 char *kaddr;
1698
1699 if (off > i_size)
1700 return 0;
1701
1702 if (off + len > i_size)
1703 len = i_size - off;
1704 toread = len;
1705 while (toread > 0) {
1706 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
1707repeat:
02117b8a 1708 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
4e46a023
JK		 1709 if (IS_ERR(page)) {
1710 if (PTR_ERR(page) == -ENOMEM) {
1711 congestion_wait(BLK_RW_ASYNC, HZ/50);
1712 goto repeat;
1713 }
0abd675e 1714 return PTR_ERR(page);
4e46a023 1715 }
0abd675e
CY		 1716
1717 lock_page(page);
1718
1719 if (unlikely(page->mapping != mapping)) {
1720 f2fs_put_page(page, 1);
1721 goto repeat;
1722 }
1723 if (unlikely(!PageUptodate(page))) {
1724 f2fs_put_page(page, 1);
1725 return -EIO;
1726 }
1727
1728 kaddr = kmap_atomic(page);
1729 memcpy(data, kaddr + offset, tocopy);
1730 kunmap_atomic(kaddr);
1731 f2fs_put_page(page, 1);
1732
1733 offset = 0;
1734 toread -= tocopy;
1735 data += tocopy;
1736 blkidx++;
1737 }
1738 return len;
1739}
1740
1741/* Write to quotafile */
1742static ssize_t f2fs_quota_write(struct super_block *sb, int type,
1743 const char *data, size_t len, loff_t off)
1744{
1745 struct inode *inode = sb_dqopt(sb)->files[type];
1746 struct address_space *mapping = inode->i_mapping;
1747 const struct address_space_operations *a_ops = mapping->a_ops;
1748 int offset = off & (sb->s_blocksize - 1);
1749 size_t towrite = len;
1750 struct page *page;
1751 char *kaddr;
1752 int err = 0;
1753 int tocopy;
1754
1755 while (towrite > 0) {
1756 tocopy = min_t(unsigned long, sb->s_blocksize - offset,
1757 towrite);
4e46a023 1758retry:
0abd675e
CY		 1759 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0,
1760 &page, NULL);
4e46a023
JK		 1761 if (unlikely(err)) {
1762 if (err == -ENOMEM) {
1763 congestion_wait(BLK_RW_ASYNC, HZ/50);
1764 goto retry;
1765 }
0abd675e 1766 break;
4e46a023 1767 }
0abd675e
CY		 1768
1769 kaddr = kmap_atomic(page);
1770 memcpy(kaddr + offset, data, tocopy);
1771 kunmap_atomic(kaddr);
1772 flush_dcache_page(page);
1773
1774 a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
1775 page, NULL);
1776 offset = 0;
1777 towrite -= tocopy;
1778 off += tocopy;
1779 data += tocopy;
1780 cond_resched();
1781 }
1782
1783 if (len == towrite)
6e5b5d41 1784 return err;
0abd675e
CY		 1785 inode->i_mtime = inode->i_ctime = current_time(inode);
1786 f2fs_mark_inode_dirty_sync(inode, false);
1787 return len - towrite;
1788}
1789
1790static struct dquot **f2fs_get_dquots(struct inode *inode)
1791{
1792 return F2FS_I(inode)->i_dquot;
1793}
1794
1795static qsize_t *f2fs_get_reserved_space(struct inode *inode)
1796{
1797 return &F2FS_I(inode)->i_reserved_quota;
1798}
1799
4b2414d0
CY		 1800static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
1801{
63189b78
CY		 1802 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
1803 F2FS_OPTION(sbi).s_jquota_fmt, type);
4b2414d0
CY		 1804}
1805
ea676733 1806int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
4b2414d0 1807{
ea676733
JK		 1808 int enabled = 0;
1809 int i, err;
1810
1811 if (f2fs_sb_has_quota_ino(sbi->sb) && rdonly) {
1812 err = f2fs_enable_quotas(sbi->sb);
1813 if (err) {
1814 f2fs_msg(sbi->sb, KERN_ERR,
1815 "Cannot turn on quota_ino: %d", err);
1816 return 0;
1817 }
1818 return 1;
1819 }
4b2414d0
CY		 1820
1821 for (i = 0; i < MAXQUOTAS; i++) {
63189b78 1822 if (F2FS_OPTION(sbi).s_qf_names[i]) {
ea676733
JK		 1823 err = f2fs_quota_on_mount(sbi, i);
1824 if (!err) {
1825 enabled = 1;
1826 continue;
1827 }
1828 f2fs_msg(sbi->sb, KERN_ERR,
1829 "Cannot turn on quotas: %d on %d", err, i);
4b2414d0
CY		 1830 }
1831 }
ea676733
JK		 1832 return enabled;
1833}
1834
1835static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
1836 unsigned int flags)
1837{
1838 struct inode *qf_inode;
1839 unsigned long qf_inum;
1840 int err;
1841
1842 BUG_ON(!f2fs_sb_has_quota_ino(sb));
1843
1844 qf_inum = f2fs_qf_ino(sb, type);
1845 if (!qf_inum)
1846 return -EPERM;
1847
1848 qf_inode = f2fs_iget(sb, qf_inum);
1849 if (IS_ERR(qf_inode)) {
1850 f2fs_msg(sb, KERN_ERR,
1851 "Bad quota inode %u:%lu", type, qf_inum);
1852 return PTR_ERR(qf_inode);
1853 }
1854
1855 /* Don't account quota for quota files to avoid recursion */
1856 qf_inode->i_flags |= S_NOQUOTA;
1857 err = dquot_enable(qf_inode, type, format_id, flags);
1858 iput(qf_inode);
1859 return err;
1860}
1861
1862static int f2fs_enable_quotas(struct super_block *sb)
1863{
1864 int type, err = 0;
1865 unsigned long qf_inum;
1866 bool quota_mopt[MAXQUOTAS] = {
1867 test_opt(F2FS_SB(sb), USRQUOTA),
1868 test_opt(F2FS_SB(sb), GRPQUOTA),
1869 test_opt(F2FS_SB(sb), PRJQUOTA),
1870 };
1871
1872 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY;
1873 for (type = 0; type < MAXQUOTAS; type++) {
1874 qf_inum = f2fs_qf_ino(sb, type);
1875 if (qf_inum) {
1876 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1,
1877 DQUOT_USAGE_ENABLED |
1878 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
1879 if (err) {
1880 f2fs_msg(sb, KERN_ERR,
1881 "Failed to enable quota tracking "
1882 "(type=%d, err=%d). Please run "
1883 "fsck to fix.", type, err);
1884 for (type--; type >= 0; type--)
1885 dquot_quota_off(sb, type);
1886 return err;
1887 }
4b2414d0
CY		 1888 }
1889 }
ea676733 1890 return 0;
4b2414d0
CY		 1891}
1892
0abd675e
CY		 1893static int f2fs_quota_sync(struct super_block *sb, int type)
1894{
1895 struct quota_info *dqopt = sb_dqopt(sb);
1896 int cnt;
1897 int ret;
1898
1899 ret = dquot_writeback_dquots(sb, type);
1900 if (ret)
1901 return ret;
1902
1903 /*
1904 * Now when everything is written we can discard the pagecache so
1905 * that userspace sees the changes.
1906 */
1907 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
1908 if (type != -1 && cnt != type)
1909 continue;
1910 if (!sb_has_quota_active(sb, cnt))
1911 continue;
1912
1913 ret = filemap_write_and_wait(dqopt->files[cnt]->i_mapping);
1914 if (ret)
1915 return ret;
1916
1917 inode_lock(dqopt->files[cnt]);
1918 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
1919 inode_unlock(dqopt->files[cnt]);
1920 }
1921 return 0;
1922}
1923
1924static int f2fs_quota_on(struct super_block *sb, int type, int format_id,
1925 const struct path *path)
1926{
1927 struct inode *inode;
1928 int err;
1929
9a20d391 1930 err = f2fs_quota_sync(sb, type);
0abd675e
CY		 1931 if (err)
1932 return err;
1933
1934 err = dquot_quota_on(sb, type, format_id, path);
1935 if (err)
1936 return err;
1937
1938 inode = d_inode(path->dentry);
1939
1940 inode_lock(inode);
59c84408 1941 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
0abd675e
CY		 1942 inode_set_flags(inode, S_NOATIME | S_IMMUTABLE,
1943 S_NOATIME | S_IMMUTABLE);
1944 inode_unlock(inode);
1945 f2fs_mark_inode_dirty_sync(inode, false);
1946
1947 return 0;
1948}
1949
1950static int f2fs_quota_off(struct super_block *sb, int type)
1951{
1952 struct inode *inode = sb_dqopt(sb)->files[type];
1953 int err;
1954
1955 if (!inode || !igrab(inode))
1956 return dquot_quota_off(sb, type);
1957
cda9cc59
YH		 1958 err = f2fs_quota_sync(sb, type);
1959 if (err)
1960 goto out_put;
0abd675e
CY		 1961
1962 err = dquot_quota_off(sb, type);
ea676733 1963 if (err || f2fs_sb_has_quota_ino(sb))
0abd675e
CY		 1964 goto out_put;
1965
1966 inode_lock(inode);
59c84408 1967 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
0abd675e
CY		 1968 inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE);
1969 inode_unlock(inode);
1970 f2fs_mark_inode_dirty_sync(inode, false);
1971out_put:
1972 iput(inode);
1973 return err;
1974}
1975
4b2414d0 1976void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 1977{
1978 int type;
cda9cc59
YH		 1979 int err;
1980
1981 for (type = 0; type < MAXQUOTAS; type++) {
1982 err = f2fs_quota_off(sb, type);
1983 if (err) {
1984 int ret = dquot_quota_off(sb, type);
0abd675e 1985
cda9cc59
YH		 1986 f2fs_msg(sb, KERN_ERR,
1987 "Fail to turn off disk quota "
1988 "(type: %d, err: %d, ret:%d), Please "
1989 "run fsck to fix it.", type, err, ret);
1990 set_sbi_flag(F2FS_SB(sb), SBI_NEED_FSCK);
1991 }
1992 }
0abd675e
CY		 1993}
1994
94b1e10e 1995static int f2fs_get_projid(struct inode *inode, kprojid_t *projid)
5c57132e
CY		 1996{
1997 *projid = F2FS_I(inode)->i_projid;
1998 return 0;
1999}
2000
0abd675e
CY		 2001static const struct dquot_operations f2fs_quota_operations = {
2002 .get_reserved_space = f2fs_get_reserved_space,
2003 .write_dquot = dquot_commit,
2004 .acquire_dquot = dquot_acquire,
2005 .release_dquot = dquot_release,
2006 .mark_dirty = dquot_mark_dquot_dirty,
2007 .write_info = dquot_commit_info,
2008 .alloc_dquot = dquot_alloc,
2009 .destroy_dquot = dquot_destroy,
5c57132e 2010 .get_projid = f2fs_get_projid,
0abd675e
CY		 2011 .get_next_id = dquot_get_next_id,
2012};
2013
2014static const struct quotactl_ops f2fs_quotactl_ops = {
2015 .quota_on = f2fs_quota_on,
2016 .quota_off = f2fs_quota_off,
2017 .quota_sync = f2fs_quota_sync,
2018 .get_state = dquot_get_state,
2019 .set_info = dquot_set_dqinfo,
2020 .get_dqblk = dquot_get_dqblk,
2021 .set_dqblk = dquot_set_dqblk,
2022 .get_nextdqblk = dquot_get_next_dqblk,
2023};
2024#else
4b2414d0 2025void f2fs_quota_off_umount(struct super_block *sb)
0abd675e
CY		 2026{
2027}
2028#endif
2029
f62fc9f9 2030static const struct super_operations f2fs_sops = {
aff063e2 2031 .alloc_inode = f2fs_alloc_inode,
531ad7d5 2032 .drop_inode = f2fs_drop_inode,
aff063e2
JK		 2033 .destroy_inode = f2fs_destroy_inode,
2034 .write_inode = f2fs_write_inode,
b3783873 2035 .dirty_inode = f2fs_dirty_inode,
aff063e2 2036 .show_options = f2fs_show_options,
0abd675e
CY		 2037#ifdef CONFIG_QUOTA
2038 .quota_read = f2fs_quota_read,
2039 .quota_write = f2fs_quota_write,
2040 .get_dquots = f2fs_get_dquots,
2041#endif
aff063e2
JK		 2042 .evict_inode = f2fs_evict_inode,
2043 .put_super = f2fs_put_super,
2044 .sync_fs = f2fs_sync_fs,
d6212a5f
CL		 2045 .freeze_fs = f2fs_freeze,
2046 .unfreeze_fs = f2fs_unfreeze,
aff063e2 2047 .statfs = f2fs_statfs,
696c018c 2048 .remount_fs = f2fs_remount,
aff063e2
JK		 2049};
2050
0b81d077
JK		 2051#ifdef CONFIG_F2FS_FS_ENCRYPTION
2052static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
2053{
2054 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2055 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2056 ctx, len, NULL);
2057}
2058
2059static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
2060 void *fs_data)
2061{
b7c409de
SY		 2062 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2063
2064 /*
2065 * Encrypting the root directory is not allowed because fsck
2066 * expects lost+found directory to exist and remain unencrypted
2067 * if LOST_FOUND feature is enabled.
2068 *
2069 */
2070 if (f2fs_sb_has_lost_found(sbi->sb) &&
2071 inode->i_ino == F2FS_ROOT_INO(sbi))
2072 return -EPERM;
2073
0b81d077
JK		 2074 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
2075 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
2076 ctx, len, fs_data, XATTR_CREATE);
2077}
2078
ff62af20
SY		 2079static bool f2fs_dummy_context(struct inode *inode)
2080{
2081 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
2082}
2083
6f69f0ed 2084static const struct fscrypt_operations f2fs_cryptops = {
a5d431ef 2085 .key_prefix = "f2fs:",
0b81d077
JK		 2086 .get_context = f2fs_get_context,
2087 .set_context = f2fs_set_context,
ff62af20 2088 .dummy_context = f2fs_dummy_context,
0b81d077 2089 .empty_dir = f2fs_empty_dir,
e12ee683 2090 .max_namelen = F2FS_NAME_LEN,
0b81d077 2091};
0b81d077
JK		 2092#endif
2093
aff063e2
JK		 2094static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
2095 u64 ino, u32 generation)
2096{
2097 struct f2fs_sb_info *sbi = F2FS_SB(sb);
2098 struct inode *inode;
2099
4d57b86d 2100 if (f2fs_check_nid_range(sbi, ino))
910bb12d 2101 return ERR_PTR(-ESTALE);
aff063e2
JK		 2102
2103 /*
2104 * f2fs_iget isn't quite right if the inode is currently unallocated!
2105 * However f2fs_iget currently does appropriate checks to handle stale
2106 * inodes so everything is OK.
2107 */
2108 inode = f2fs_iget(sb, ino);
2109 if (IS_ERR(inode))
2110 return ERR_CAST(inode);
6bacf52f 2111 if (unlikely(generation && inode->i_generation != generation)) {
aff063e2
JK		 2112 /* we didn't find the right inode.. */
2113 iput(inode);
2114 return ERR_PTR(-ESTALE);
2115 }
2116 return inode;
2117}
2118
2119static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid,
2120 int fh_len, int fh_type)
2121{
2122 return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
2123 f2fs_nfs_get_inode);
2124}
2125
2126static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid,
2127 int fh_len, int fh_type)
2128{
2129 return generic_fh_to_parent(sb, fid, fh_len, fh_type,
2130 f2fs_nfs_get_inode);
2131}
2132
2133static const struct export_operations f2fs_export_ops = {
2134 .fh_to_dentry = f2fs_fh_to_dentry,
2135 .fh_to_parent = f2fs_fh_to_parent,
2136 .get_parent = f2fs_get_parent,
2137};
2138
e0afc4d6 2139static loff_t max_file_blocks(void)
aff063e2 2140{
7a2af766 2141 loff_t result = 0;
aff063e2
JK		 2142 loff_t leaf_count = ADDRS_PER_BLOCK;
2143
7a2af766
CY		 2144 /*
2145 * note: previously, result is equal to (DEF_ADDRS_PER_INODE -
6afc662e 2146 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more
7a2af766
CY		 2147 * space in inode.i_addr, it will be more safe to reassign
2148 * result as zero.
2149 */
2150
aff063e2
JK		 2151 /* two direct node blocks */
2152 result += (leaf_count * 2);
2153
2154 /* two indirect node blocks */
2155 leaf_count *= NIDS_PER_BLOCK;
2156 result += (leaf_count * 2);
2157
2158 /* one double indirect node block */
2159 leaf_count *= NIDS_PER_BLOCK;
2160 result += leaf_count;
2161
aff063e2
JK		 2162 return result;
2163}
2164
fd694733
JK		 2165static int __f2fs_commit_super(struct buffer_head *bh,
2166 struct f2fs_super_block *super)
2167{
2168 lock_buffer(bh);
2169 if (super)
2170 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
fd694733
JK		 2171 set_buffer_dirty(bh);
2172 unlock_buffer(bh);
2173
2174 /* it's rare case, we can do fua all the time */
3adc5fcb 2175 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
fd694733
JK		 2176}
2177
df728b0f 2178static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi,
fd694733 2179 struct buffer_head *bh)
9a59b62f 2180{
fd694733
JK		 2181 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2182 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2183 struct super_block *sb = sbi->sb;
9a59b62f
CY		 2184 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
2185 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr);
2186 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr);
2187 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr);
2188 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
2189 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
2190 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt);
2191 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit);
2192 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat);
2193 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa);
2194 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2195 u32 segment_count = le32_to_cpu(raw_super->segment_count);
2196 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
fd694733
JK		 2197 u64 main_end_blkaddr = main_blkaddr +
2198 (segment_count_main << log_blocks_per_seg);
2199 u64 seg_end_blkaddr = segment0_blkaddr +
2200 (segment_count << log_blocks_per_seg);
9a59b62f
CY		 2201
2202 if (segment0_blkaddr != cp_blkaddr) {
2203 f2fs_msg(sb, KERN_INFO,
2204 "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
2205 segment0_blkaddr, cp_blkaddr);
2206 return true;
2207 }
2208
2209 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) !=
2210 sit_blkaddr) {
2211 f2fs_msg(sb, KERN_INFO,
2212 "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
2213 cp_blkaddr, sit_blkaddr,
2214 segment_count_ckpt << log_blocks_per_seg);
2215 return true;
2216 }
2217
2218 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) !=
2219 nat_blkaddr) {
2220 f2fs_msg(sb, KERN_INFO,
2221 "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
2222 sit_blkaddr, nat_blkaddr,
2223 segment_count_sit << log_blocks_per_seg);
2224 return true;
2225 }
2226
2227 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) !=
2228 ssa_blkaddr) {
2229 f2fs_msg(sb, KERN_INFO,
2230 "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
2231 nat_blkaddr, ssa_blkaddr,
2232 segment_count_nat << log_blocks_per_seg);
2233 return true;
2234 }
2235
2236 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) !=
2237 main_blkaddr) {
2238 f2fs_msg(sb, KERN_INFO,
2239 "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
2240 ssa_blkaddr, main_blkaddr,
2241 segment_count_ssa << log_blocks_per_seg);
2242 return true;
2243 }
2244
fd694733 2245 if (main_end_blkaddr > seg_end_blkaddr) {
9a59b62f 2246 f2fs_msg(sb, KERN_INFO,
fd694733 2247 "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
9a59b62f 2248 main_blkaddr,
fd694733
JK		 2249 segment0_blkaddr +
2250 (segment_count << log_blocks_per_seg),
9a59b62f
CY		 2251 segment_count_main << log_blocks_per_seg);
2252 return true;
fd694733
JK		 2253 } else if (main_end_blkaddr < seg_end_blkaddr) {
2254 int err = 0;
2255 char *res;
2256
2257 /* fix in-memory information all the time */
2258 raw_super->segment_count = cpu_to_le32((main_end_blkaddr -
2259 segment0_blkaddr) >> log_blocks_per_seg);
2260
2261 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) {
df728b0f 2262 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
fd694733
JK		 2263 res = "internally";
2264 } else {
2265 err = __f2fs_commit_super(bh, NULL);
2266 res = err ? "failed" : "done";
2267 }
2268 f2fs_msg(sb, KERN_INFO,
2269 "Fix alignment : %s, start(%u) end(%u) block(%u)",
2270 res, main_blkaddr,
2271 segment0_blkaddr +
2272 (segment_count << log_blocks_per_seg),
2273 segment_count_main << log_blocks_per_seg);
2274 if (err)
2275 return true;
9a59b62f 2276 }
9a59b62f
CY		 2277 return false;
2278}
2279
df728b0f 2280static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
fd694733 2281 struct buffer_head *bh)
aff063e2 2282{
0cfe75c5
JK		 2283 block_t segment_count, segs_per_sec, secs_per_zone;
2284 block_t total_sections, blocks_per_seg;
fd694733
JK		 2285 struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
2286 (bh->b_data + F2FS_SUPER_OFFSET);
df728b0f 2287 struct super_block *sb = sbi->sb;
aff063e2 2288 unsigned int blocksize;
d440c52d
JZ		 2289 size_t crc_offset = 0;
2290 __u32 crc = 0;
2291
2292 /* Check checksum_offset and crc in superblock */
2293 if (le32_to_cpu(raw_super->feature) & F2FS_FEATURE_SB_CHKSUM) {
2294 crc_offset = le32_to_cpu(raw_super->checksum_offset);
2295 if (crc_offset !=
2296 offsetof(struct f2fs_super_block, crc)) {
2297 f2fs_msg(sb, KERN_INFO,
2298 "Invalid SB checksum offset: %zu",
2299 crc_offset);
2300 return 1;
2301 }
2302 crc = le32_to_cpu(raw_super->crc);
2303 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) {
2304 f2fs_msg(sb, KERN_INFO,
2305 "Invalid SB checksum value: %u", crc);
2306 return 1;
2307 }
2308 }
aff063e2 2309
a07ef784
NJ		 2310 if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) {
2311 f2fs_msg(sb, KERN_INFO,
2312 "Magic Mismatch, valid(0x%x) - read(0x%x)",
2313 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
aff063e2 2314 return 1;
a07ef784 2315 }
aff063e2 2316
5c9b4692 2317 /* Currently, support only 4KB page cache size */
09cbfeaf 2318 if (F2FS_BLKSIZE != PAGE_SIZE) {
5c9b4692 2319 f2fs_msg(sb, KERN_INFO,
14d7e9de 2320 "Invalid page_cache_size (%lu), supports only 4KB\n",
09cbfeaf 2321 PAGE_SIZE);
5c9b4692 2322 return 1;
2323 }
2324
aff063e2
JK		 2325 /* Currently, support only 4KB block size */
2326 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
5c9b4692 2327 if (blocksize != F2FS_BLKSIZE) {
a07ef784
NJ		 2328 f2fs_msg(sb, KERN_INFO,
2329 "Invalid blocksize (%u), supports only 4KB\n",
2330 blocksize);
aff063e2 2331 return 1;
a07ef784 2332 }
5c9b4692 2333
9a59b62f
CY		 2334 /* check log blocks per segment */
2335 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) {
2336 f2fs_msg(sb, KERN_INFO,
2337 "Invalid log blocks per segment (%u)\n",
2338 le32_to_cpu(raw_super->log_blocks_per_seg));
2339 return 1;
2340 }
2341
55cf9cb6
CY		 2342 /* Currently, support 512/1024/2048/4096 bytes sector size */
2343 if (le32_to_cpu(raw_super->log_sectorsize) >
2344 F2FS_MAX_LOG_SECTOR_SIZE ||
2345 le32_to_cpu(raw_super->log_sectorsize) <
2346 F2FS_MIN_LOG_SECTOR_SIZE) {
2347 f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)",
2348 le32_to_cpu(raw_super->log_sectorsize));
aff063e2 2349 return 1;
a07ef784 2350 }
55cf9cb6
CY		 2351 if (le32_to_cpu(raw_super->log_sectors_per_block) +
2352 le32_to_cpu(raw_super->log_sectorsize) !=
2353 F2FS_MAX_LOG_SECTOR_SIZE) {
2354 f2fs_msg(sb, KERN_INFO,
2355 "Invalid log sectors per block(%u) log sectorsize(%u)",
2356 le32_to_cpu(raw_super->log_sectors_per_block),
2357 le32_to_cpu(raw_super->log_sectorsize));
aff063e2 2358 return 1;
a07ef784 2359 }
9a59b62f 2360
0cfe75c5
JK		 2361 segment_count = le32_to_cpu(raw_super->segment_count);
2362 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2363 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2364 total_sections = le32_to_cpu(raw_super->section_count);
2365
2366 /* blocks_per_seg should be 512, given the above check */
2367 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg);
2368
2369 if (segment_count > F2FS_MAX_SEGMENT ||
2370 segment_count < F2FS_MIN_SEGMENTS) {
2371 f2fs_msg(sb, KERN_INFO,
2372 "Invalid segment count (%u)",
2373 segment_count);
2374 return 1;
2375 }
2376
2377 if (total_sections > segment_count ||
2378 total_sections < F2FS_MIN_SEGMENTS ||
2379 segs_per_sec > segment_count || !segs_per_sec) {
2380 f2fs_msg(sb, KERN_INFO,
2381 "Invalid segment/section count (%u, %u x %u)",
2382 segment_count, total_sections, segs_per_sec);
2383 return 1;
2384 }
2385
2386 if ((segment_count / segs_per_sec) < total_sections) {
2387 f2fs_msg(sb, KERN_INFO,
2388 "Small segment_count (%u < %u * %u)",
2389 segment_count, segs_per_sec, total_sections);
2390 return 1;
2391 }
2392
2393 if (segment_count > (le32_to_cpu(raw_super->block_count) >> 9)) {
2394 f2fs_msg(sb, KERN_INFO,
2395 "Wrong segment_count / block_count (%u > %u)",
2396 segment_count, le32_to_cpu(raw_super->block_count));
2397 return 1;
2398 }
2399
42bf546c 2400 if (secs_per_zone > total_sections || !secs_per_zone) {
0cfe75c5 2401 f2fs_msg(sb, KERN_INFO,
42bf546c 2402 "Wrong secs_per_zone / total_sections (%u, %u)",
0cfe75c5
JK		 2403 secs_per_zone, total_sections);
2404 return 1;
2405 }
2406 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION ||
2407 raw_super->hot_ext_count > F2FS_MAX_EXTENSION ||
2408 (le32_to_cpu(raw_super->extension_count) +
2409 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) {
2410 f2fs_msg(sb, KERN_INFO,
2411 "Corrupted extension count (%u + %u > %u)",
2412 le32_to_cpu(raw_super->extension_count),
2413 raw_super->hot_ext_count,
2414 F2FS_MAX_EXTENSION);
2415 return 1;
2416 }
2417
2418 if (le32_to_cpu(raw_super->cp_payload) >
2419 (blocks_per_seg - F2FS_CP_PACKS)) {
2420 f2fs_msg(sb, KERN_INFO,
2421 "Insane cp_payload (%u > %u)",
2422 le32_to_cpu(raw_super->cp_payload),
2423 blocks_per_seg - F2FS_CP_PACKS);
2424 return 1;
2425 }
2426
9a59b62f
CY		 2427 /* check reserved ino info */
2428 if (le32_to_cpu(raw_super->node_ino) != 1 ||
2429 le32_to_cpu(raw_super->meta_ino) != 2 ||
2430 le32_to_cpu(raw_super->root_ino) != 3) {
2431 f2fs_msg(sb, KERN_INFO,
2432 "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
2433 le32_to_cpu(raw_super->node_ino),
2434 le32_to_cpu(raw_super->meta_ino),
2435 le32_to_cpu(raw_super->root_ino));
2436 return 1;
2437 }
2438
2439 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
df728b0f 2440 if (sanity_check_area_boundary(sbi, bh))
9a59b62f
CY		 2441 return 1;
2442
aff063e2
JK		 2443 return 0;
2444}
2445
4d57b86d 2446int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
aff063e2
JK		 2447{
2448 unsigned int total, fsmeta;
577e3495
JK		 2449 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
2450 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2040fce8 2451 unsigned int ovp_segments, reserved_segments;
15d3042a 2452 unsigned int main_segs, blocks_per_seg;
c77ec61c
CY		 2453 unsigned int sit_segs, nat_segs;
2454 unsigned int sit_bitmap_size, nat_bitmap_size;
2455 unsigned int log_blocks_per_seg;
9dc956b2 2456 unsigned int segment_count_main;
e494c2f9 2457 unsigned int cp_pack_start_sum, cp_payload;
9dc956b2 2458 block_t user_block_count;
042be0f8 2459 int i, j;
aff063e2
JK		 2460
2461 total = le32_to_cpu(raw_super->segment_count);
2462 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
c77ec61c
CY		 2463 sit_segs = le32_to_cpu(raw_super->segment_count_sit);
2464 fsmeta += sit_segs;
2465 nat_segs = le32_to_cpu(raw_super->segment_count_nat);
2466 fsmeta += nat_segs;
aff063e2
JK		 2467 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
2468 fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
2469
6bacf52f 2470 if (unlikely(fsmeta >= total))
aff063e2 2471 return 1;
577e3495 2472
2040fce8
JK		 2473 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
2474 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
2475
2476 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS ||
2477 ovp_segments == 0 || reserved_segments == 0)) {
2478 f2fs_msg(sbi->sb, KERN_ERR,
2479 "Wrong layout: check mkfs.f2fs version");
2480 return 1;
2481 }
2482
9dc956b2
CY		 2483 user_block_count = le64_to_cpu(ckpt->user_block_count);
2484 segment_count_main = le32_to_cpu(raw_super->segment_count_main);
2485 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2486 if (!user_block_count || user_block_count >=
2487 segment_count_main << log_blocks_per_seg) {
2488 f2fs_msg(sbi->sb, KERN_ERR,
2489 "Wrong user_block_count: %u", user_block_count);
2490 return 1;
2491 }
2492
15d3042a
JQ		 2493 main_segs = le32_to_cpu(raw_super->segment_count_main);
2494 blocks_per_seg = sbi->blocks_per_seg;
2495
2496 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2497 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
2498 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
2499 return 1;
042be0f8
CY		 2500 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
2501 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2502 le32_to_cpu(ckpt->cur_node_segno[j])) {
2503 f2fs_msg(sbi->sb, KERN_ERR,
2504 "Node segment (%u, %u) has the same "
2505 "segno: %u", i, j,
2506 le32_to_cpu(ckpt->cur_node_segno[i]));
2507 return 1;
2508 }
2509 }
15d3042a
JQ		 2510 }
2511 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
2512 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
2513 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
2514 return 1;
042be0f8
CY		 2515 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
2516 if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
2517 le32_to_cpu(ckpt->cur_data_segno[j])) {
2518 f2fs_msg(sbi->sb, KERN_ERR,
2519 "Data segment (%u, %u) has the same "
2520 "segno: %u", i, j,
2521 le32_to_cpu(ckpt->cur_data_segno[i]));
2522 return 1;
2523 }
2524 }
2525 }
2526 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
2527 for (j = i; j < NR_CURSEG_DATA_TYPE; j++) {
2528 if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
2529 le32_to_cpu(ckpt->cur_data_segno[j])) {
2530 f2fs_msg(sbi->sb, KERN_ERR,
2531 "Data segment (%u) and Data segment (%u)"
2532 " has the same segno: %u", i, j,
2533 le32_to_cpu(ckpt->cur_node_segno[i]));
2534 return 1;
2535 }
2536 }
15d3042a
JQ		 2537 }
2538
c77ec61c
CY		 2539 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2540 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
c77ec61c
CY		 2541
2542 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
2543 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
2544 f2fs_msg(sbi->sb, KERN_ERR,
2545 "Wrong bitmap size: sit: %u, nat:%u",
2546 sit_bitmap_size, nat_bitmap_size);
2547 return 1;
2548 }
e494c2f9
CY		 2549
2550 cp_pack_start_sum = __start_sum_addr(sbi);
2551 cp_payload = __cp_payload(sbi);
2552 if (cp_pack_start_sum < cp_payload + 1 ||
2553 cp_pack_start_sum > blocks_per_seg - 1 -
2554 NR_CURSEG_TYPE) {
2555 f2fs_msg(sbi->sb, KERN_ERR,
2556 "Wrong cp_pack_start_sum: %u",
2557 cp_pack_start_sum);
2558 return 1;
2559 }
c77ec61c 2560
1e968fdf 2561 if (unlikely(f2fs_cp_error(sbi))) {
577e3495
JK		 2562 f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck");
2563 return 1;
2564 }
aff063e2
JK		 2565 return 0;
2566}
2567
2568static void init_sb_info(struct f2fs_sb_info *sbi)
2569{
2570 struct f2fs_super_block *raw_super = sbi->raw_super;
e41e6d75 2571 int i, j;
aff063e2
JK		 2572
2573 sbi->log_sectors_per_block =
2574 le32_to_cpu(raw_super->log_sectors_per_block);
2575 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize);
2576 sbi->blocksize = 1 << sbi->log_blocksize;
2577 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
2578 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg;
2579 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
2580 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
2581 sbi->total_sections = le32_to_cpu(raw_super->section_count);
2582 sbi->total_node_count =
2583 (le32_to_cpu(raw_super->segment_count_nat) / 2)
2584 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
2585 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino);
2586 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino);
2587 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino);
5ec4e49f 2588 sbi->cur_victim_sec = NULL_SECNO;
b1c57c1c 2589 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH;
aff063e2 2590
ab9fa662 2591 sbi->dir_level = DEF_DIR_LEVEL;
6beceb54 2592 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
d0239e1b 2593 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
a7d10cf3
ST		 2594 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL;
2595 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL;
4354994f 2596 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL;
caf0047e 2597 clear_sbi_flag(sbi, SBI_NEED_FSCK);
2658e50d 2598
35782b23
JK		 2599 for (i = 0; i < NR_COUNT_TYPE; i++)
2600 atomic_set(&sbi->nr_pages[i], 0);
2601
c29fd0c0
CY		 2602 for (i = 0; i < META; i++)
2603 atomic_set(&sbi->wb_sync_req[i], 0);
687de7f1 2604
2658e50d
JK		 2605 INIT_LIST_HEAD(&sbi->s_list);
2606 mutex_init(&sbi->umount_mutex);
e41e6d75
CY		 2607 for (i = 0; i < NR_PAGE_TYPE - 1; i++)
2608 for (j = HOT; j < NR_TEMP_TYPE; j++)
2609 mutex_init(&sbi->wio_mutex[i][j]);
107a805d 2610 init_rwsem(&sbi->io_order_lock);
aaec2b1d 2611 spin_lock_init(&sbi->cp_lock);
1228b482
CY		 2612
2613 sbi->dirty_device = 0;
2614 spin_lock_init(&sbi->dev_lock);
d0d3f1b3 2615
846ae671 2616 init_rwsem(&sbi->sb_lock);
aff063e2
JK		 2617}
2618
523be8a6
JK		 2619static int init_percpu_info(struct f2fs_sb_info *sbi)
2620{
35782b23 2621 int err;
41382ec4 2622
513c5f37
JK		 2623 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL);
2624 if (err)
2625 return err;
2626
4a70e255 2627 err = percpu_counter_init(&sbi->total_valid_inode_count, 0,
41382ec4 2628 GFP_KERNEL);
4a70e255
CY		 2629 if (err)
2630 percpu_counter_destroy(&sbi->alloc_valid_block_count);
2631
2632 return err;
523be8a6
JK		 2633}
2634
178053e2 2635#ifdef CONFIG_BLK_DEV_ZONED
3c62be17 2636static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
178053e2 2637{
3c62be17 2638 struct block_device *bdev = FDEV(devi).bdev;
178053e2
DLM		 2639 sector_t nr_sectors = bdev->bd_part->nr_sects;
2640 sector_t sector = 0;
2641 struct blk_zone *zones;
2642 unsigned int i, nr_zones;
2643 unsigned int n = 0;
2644 int err = -EIO;
2645
ccd31cb2 2646 if (!f2fs_sb_has_blkzoned(sbi->sb))
178053e2
DLM		 2647 return 0;
2648
3c62be17 2649 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
f99e8648 2650 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)))
3c62be17 2651 return -EINVAL;
f99e8648 2652 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev));
3c62be17
JK		 2653 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
2654 __ilog2_u32(sbi->blocks_per_blkz))
2655 return -EINVAL;
178053e2 2656 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
3c62be17
JK		 2657 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
2658 sbi->log_blocks_per_blkz;
f99e8648 2659 if (nr_sectors & (bdev_zone_sectors(bdev) - 1))
3c62be17 2660 FDEV(devi).nr_blkz++;
178053e2 2661
4e6aad29
CY		 2662 FDEV(devi).blkz_type = f2fs_kmalloc(sbi, FDEV(devi).nr_blkz,
2663 GFP_KERNEL);
3c62be17 2664 if (!FDEV(devi).blkz_type)
178053e2
DLM		 2665 return -ENOMEM;
2666
2667#define F2FS_REPORT_NR_ZONES 4096
2668
026f0507
KC		 2669 zones = f2fs_kzalloc(sbi,
2670 array_size(F2FS_REPORT_NR_ZONES,
2671 sizeof(struct blk_zone)),
2672 GFP_KERNEL);
178053e2
DLM		 2673 if (!zones)
2674 return -ENOMEM;
2675
2676 /* Get block zones type */
2677 while (zones && sector < nr_sectors) {
2678
2679 nr_zones = F2FS_REPORT_NR_ZONES;
2680 err = blkdev_report_zones(bdev, sector,
2681 zones, &nr_zones,
2682 GFP_KERNEL);
2683 if (err)
2684 break;
2685 if (!nr_zones) {
2686 err = -EIO;
2687 break;
2688 }
2689
2690 for (i = 0; i < nr_zones; i++) {
3c62be17 2691 FDEV(devi).blkz_type[n] = zones[i].type;
178053e2
DLM		 2692 sector += zones[i].len;
2693 n++;
2694 }
2695 }
2696
2697 kfree(zones);
2698
2699 return err;
2700}
2701#endif
2702
9076a75f
GZ		 2703/*
2704 * Read f2fs raw super block.
2b39e907
SL		 2705 * Because we have two copies of super block, so read both of them
2706 * to get the first valid one. If any one of them is broken, we pass
2707 * them recovery flag back to the caller.
9076a75f 2708 */
df728b0f 2709static int read_raw_super_block(struct f2fs_sb_info *sbi,
9076a75f 2710 struct f2fs_super_block **raw_super,
e8240f65 2711 int *valid_super_block, int *recovery)
14d7e9de 2712{
df728b0f 2713 struct super_block *sb = sbi->sb;
2b39e907 2714 int block;
e8240f65 2715 struct buffer_head *bh;
fd694733 2716 struct f2fs_super_block *super;
da554e48 2717 int err = 0;
14d7e9de 2718
b39f0de2
YH		 2719 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL);
2720 if (!super)
2721 return -ENOMEM;
2b39e907
SL		 2722
2723 for (block = 0; block < 2; block++) {
2724 bh = sb_bread(sb, block);
2725 if (!bh) {
2726 f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock",
9076a75f 2727 block + 1);
2b39e907
SL		 2728 err = -EIO;
2729 continue;
2730 }
14d7e9de 2731
2b39e907 2732 /* sanity checking of raw super */
df728b0f 2733 if (sanity_check_raw_super(sbi, bh)) {
2b39e907
SL		 2734 f2fs_msg(sb, KERN_ERR,
2735 "Can't find valid F2FS filesystem in %dth superblock",
2736 block + 1);
2737 err = -EINVAL;
2738 brelse(bh);
2739 continue;
2740 }
14d7e9de 2741
2b39e907 2742 if (!*raw_super) {
fd694733
JK		 2743 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET,
2744 sizeof(*super));
2b39e907
SL		 2745 *valid_super_block = block;
2746 *raw_super = super;
2747 }
2748 brelse(bh);
da554e48 2749 }
2750
2b39e907
SL		 2751 /* Fail to read any one of the superblocks*/
2752 if (err < 0)
2753 *recovery = 1;
da554e48 2754
da554e48 2755 /* No valid superblock */
2b39e907 2756 if (!*raw_super)
b39f0de2 2757 kfree(super);
2b39e907
SL		 2758 else
2759 err = 0;
da554e48 2760
2b39e907 2761 return err;
14d7e9de 2762}
2763
fd694733 2764int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
26d815ad 2765{
5d909cdb 2766 struct buffer_head *bh;
d440c52d 2767 __u32 crc = 0;
26d815ad
JK		 2768 int err;
2769
df728b0f
JK		 2770 if ((recover && f2fs_readonly(sbi->sb)) ||
2771 bdev_read_only(sbi->sb->s_bdev)) {
2772 set_sbi_flag(sbi, SBI_NEED_SB_WRITE);
f2353d7b 2773 return -EROFS;
df728b0f 2774 }
f2353d7b 2775
d440c52d
JZ		 2776 /* we should update superblock crc here */
2777 if (!recover && f2fs_sb_has_sb_chksum(sbi->sb)) {
2778 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi),
2779 offsetof(struct f2fs_super_block, crc));
2780 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc);
2781 }
2782
fd694733 2783 /* write back-up superblock first */
0964fc1a 2784 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
5d909cdb
JK		 2785 if (!bh)
2786 return -EIO;
fd694733 2787 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
5d909cdb 2788 brelse(bh);
c5bda1c8
CY		 2789
2790 /* if we are in recovery path, skip writing valid superblock */
2791 if (recover || err)
5d909cdb 2792 return err;
26d815ad
JK		 2793
2794 /* write current valid superblock */
0964fc1a 2795 bh = sb_bread(sbi->sb, sbi->valid_super_block);
fd694733
JK		 2796 if (!bh)
2797 return -EIO;
2798 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
2799 brelse(bh);
2800 return err;
26d815ad
JK		 2801}
2802
3c62be17
JK		 2803static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
2804{
2805 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
7bb3a371 2806 unsigned int max_devices = MAX_DEVICES;
3c62be17
JK		 2807 int i;
2808
7bb3a371
MS		 2809 /* Initialize single device information */
2810 if (!RDEV(0).path[0]) {
2811 if (!bdev_is_zoned(sbi->sb->s_bdev))
3c62be17 2812 return 0;
7bb3a371
MS		 2813 max_devices = 1;
2814 }
3c62be17 2815
7bb3a371
MS		 2816 /*
2817 * Initialize multiple devices information, or single
2818 * zoned block device information.
2819 */
026f0507
KC		 2820 sbi->devs = f2fs_kzalloc(sbi,
2821 array_size(max_devices,
2822 sizeof(struct f2fs_dev_info)),
2823 GFP_KERNEL);
7bb3a371
MS		 2824 if (!sbi->devs)
2825 return -ENOMEM;
3c62be17 2826
7bb3a371 2827 for (i = 0; i < max_devices; i++) {
3c62be17 2828
7bb3a371
MS		 2829 if (i > 0 && !RDEV(i).path[0])
2830 break;
2831
2832 if (max_devices == 1) {
2833 /* Single zoned block device mount */
2834 FDEV(0).bdev =
2835 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev,
3c62be17 2836 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371
MS		 2837 } else {
2838 /* Multi-device mount */
2839 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
2840 FDEV(i).total_segments =
2841 le32_to_cpu(RDEV(i).total_segments);
2842 if (i == 0) {
2843 FDEV(i).start_blk = 0;
2844 FDEV(i).end_blk = FDEV(i).start_blk +
2845 (FDEV(i).total_segments <<
2846 sbi->log_blocks_per_seg) - 1 +
2847 le32_to_cpu(raw_super->segment0_blkaddr);
2848 } else {
2849 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
2850 FDEV(i).end_blk = FDEV(i).start_blk +
2851 (FDEV(i).total_segments <<
2852 sbi->log_blocks_per_seg) - 1;
2853 }
2854 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
3c62be17 2855 sbi->sb->s_mode, sbi->sb->s_type);
7bb3a371 2856 }
3c62be17
JK		 2857 if (IS_ERR(FDEV(i).bdev))
2858 return PTR_ERR(FDEV(i).bdev);
2859
2860 /* to release errored devices */
2861 sbi->s_ndevs = i + 1;
2862
2863#ifdef CONFIG_BLK_DEV_ZONED
2864 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
ccd31cb2 2865 !f2fs_sb_has_blkzoned(sbi->sb)) {
3c62be17
JK		 2866 f2fs_msg(sbi->sb, KERN_ERR,
2867 "Zoned block device feature not enabled\n");
2868 return -EINVAL;
2869 }
2870 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
2871 if (init_blkz_info(sbi, i)) {
2872 f2fs_msg(sbi->sb, KERN_ERR,
2873 "Failed to initialize F2FS blkzone information");
2874 return -EINVAL;
2875 }
7bb3a371
MS		 2876 if (max_devices == 1)
2877 break;
3c62be17
JK		 2878 f2fs_msg(sbi->sb, KERN_INFO,
2879 "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
2880 i, FDEV(i).path,
2881 FDEV(i).total_segments,
2882 FDEV(i).start_blk, FDEV(i).end_blk,
2883 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ?
2884 "Host-aware" : "Host-managed");
2885 continue;
2886 }
2887#endif
2888 f2fs_msg(sbi->sb, KERN_INFO,
2889 "Mount Device [%2d]: %20s, %8u, %8x - %8x",
2890 i, FDEV(i).path,
2891 FDEV(i).total_segments,
2892 FDEV(i).start_blk, FDEV(i).end_blk);
2893 }
0a595eba
JK		 2894 f2fs_msg(sbi->sb, KERN_INFO,
2895 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi));
3c62be17
JK		 2896 return 0;
2897}
2898
84b89e5d
JK		 2899static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
2900{
2901 struct f2fs_sm_info *sm_i = SM_I(sbi);
2902
2903 /* adjust parameters according to the volume size */
2904 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
63189b78 2905 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
84b89e5d
JK		 2906 sm_i->dcc_info->discard_granularity = 1;
2907 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
2908 }
4cac90d5
CY		 2909
2910 sbi->readdir_ra = 1;
84b89e5d
JK		 2911}
2912
aff063e2
JK		 2913static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
2914{
2915 struct f2fs_sb_info *sbi;
da554e48 2916 struct f2fs_super_block *raw_super;
aff063e2 2917 struct inode *root;
99e3e858 2918 int err;
2adc3505 2919 bool retry = true, need_fsck = false;
dabc4a5c 2920 char *options = NULL;
e8240f65 2921 int recovery, i, valid_super_block;
8f1dbbbb 2922 struct curseg_info *seg_i;
aff063e2 2923
ed2e621a 2924try_onemore:
da554e48 2925 err = -EINVAL;
2926 raw_super = NULL;
e8240f65 2927 valid_super_block = -1;
da554e48 2928 recovery = 0;
2929
aff063e2
JK		 2930 /* allocate memory for f2fs-specific super block info */
2931 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
2932 if (!sbi)
2933 return -ENOMEM;
2934
df728b0f
JK		 2935 sbi->sb = sb;
2936
43b6573b
KM		 2937 /* Load the checksum driver */
2938 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0);
2939 if (IS_ERR(sbi->s_chksum_driver)) {
2940 f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver.");
2941 err = PTR_ERR(sbi->s_chksum_driver);
2942 sbi->s_chksum_driver = NULL;
2943 goto free_sbi;
2944 }
2945
ff9234ad 2946 /* set a block size */
6bacf52f 2947 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) {
a07ef784 2948 f2fs_msg(sb, KERN_ERR, "unable to set blocksize");
aff063e2 2949 goto free_sbi;
a07ef784 2950 }
aff063e2 2951
df728b0f 2952 err = read_raw_super_block(sbi, &raw_super, &valid_super_block,
e8240f65 2953 &recovery);
9076a75f
GZ		 2954 if (err)
2955 goto free_sbi;
2956
5fb08372 2957 sb->s_fs_info = sbi;
52763a4b
JK		 2958 sbi->raw_super = raw_super;
2959
704956ec
CY		 2960 /* precompute checksum seed for metadata */
2961 if (f2fs_sb_has_inode_chksum(sb))
2962 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid,
2963 sizeof(raw_super->uuid));
2964
d1b959c8
DLM		 2965 /*
2966 * The BLKZONED feature indicates that the drive was formatted with
2967 * zone alignment optimization. This is optional for host-aware
2968 * devices, but mandatory for host-managed zoned block devices.
2969 */
2970#ifndef CONFIG_BLK_DEV_ZONED
ccd31cb2 2971 if (f2fs_sb_has_blkzoned(sb)) {
d1b959c8
DLM		 2972 f2fs_msg(sb, KERN_ERR,
2973 "Zoned block device support is not enabled\n");
1727f317 2974 err = -EOPNOTSUPP;
d1b959c8
DLM		 2975 goto free_sb_buf;
2976 }
d1b959c8 2977#endif
498c5e9f 2978 default_options(sbi);
aff063e2 2979 /* parse mount options */
dabc4a5c
JK		 2980 options = kstrdup((const char *)data, GFP_KERNEL);
2981 if (data && !options) {
2982 err = -ENOMEM;
aff063e2 2983 goto free_sb_buf;
dabc4a5c
JK		 2984 }
2985
2986 err = parse_options(sb, options);
2987 if (err)
2988 goto free_options;
aff063e2 2989
e0afc4d6
CY		 2990 sbi->max_file_blocks = max_file_blocks();
2991 sb->s_maxbytes = sbi->max_file_blocks <<
2992 le32_to_cpu(raw_super->log_blocksize);
aff063e2
JK		 2993 sb->s_max_links = F2FS_LINK_MAX;
2994 get_random_bytes(&sbi->s_next_generation, sizeof(u32));
2995
0abd675e
CY		 2996#ifdef CONFIG_QUOTA
2997 sb->dq_op = &f2fs_quota_operations;
ea676733
JK		 2998 if (f2fs_sb_has_quota_ino(sb))
2999 sb->s_qcop = &dquot_quotactl_sysfile_ops;
3000 else
3001 sb->s_qcop = &f2fs_quotactl_ops;
5c57132e 3002 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
292c196a
CY		 3003
3004 if (f2fs_sb_has_quota_ino(sbi->sb)) {
3005 for (i = 0; i < MAXQUOTAS; i++) {
3006 if (f2fs_qf_ino(sbi->sb, i))
3007 sbi->nquota_files++;
3008 }
3009 }
0abd675e
CY		 3010#endif
3011
aff063e2 3012 sb->s_op = &f2fs_sops;
ffcc4182 3013#ifdef CONFIG_F2FS_FS_ENCRYPTION
0b81d077 3014 sb->s_cop = &f2fs_cryptops;
ffcc4182 3015#endif
aff063e2
JK		 3016 sb->s_xattr = f2fs_xattr_handlers;
3017 sb->s_export_op = &f2fs_export_ops;
3018 sb->s_magic = F2FS_SUPER_MAGIC;
aff063e2 3019 sb->s_time_gran = 1;
1751e8a6
LT		 3020 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
3021 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
85787090 3022 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
578c6478 3023 sb->s_iflags |= SB_I_CGROUPWB;
aff063e2
JK		 3024
3025 /* init f2fs-specific super block info */
e8240f65 3026 sbi->valid_super_block = valid_super_block;
aff063e2 3027 mutex_init(&sbi->gc_mutex);
853137ce 3028 mutex_init(&sbi->writepages);
aff063e2 3029 mutex_init(&sbi->cp_mutex);
b3582c68 3030 init_rwsem(&sbi->node_write);
59c9081b 3031 init_rwsem(&sbi->node_change);
315df839
JK		 3032
3033 /* disallow all the data/node/meta page writes */
3034 set_sbi_flag(sbi, SBI_POR_DOING);
aff063e2 3035 spin_lock_init(&sbi->stat_lock);
971767ca 3036
b0af6d49
CY		 3037 /* init iostat info */
3038 spin_lock_init(&sbi->iostat_lock);
3039 sbi->iostat_enable = false;
3040
458e6197 3041 for (i = 0; i < NR_PAGE_TYPE; i++) {
a912b54d
JK		 3042 int n = (i == META) ? 1: NR_TEMP_TYPE;
3043 int j;
3044
c8606593
KC		 3045 sbi->write_io[i] =
3046 f2fs_kmalloc(sbi,
3047 array_size(n,
3048 sizeof(struct f2fs_bio_info)),
3049 GFP_KERNEL);
b63def91
CJ		 3050 if (!sbi->write_io[i]) {
3051 err = -ENOMEM;
0b2103e8 3052 goto free_bio_info;
b63def91 3053 }
a912b54d
JK		 3054
3055 for (j = HOT; j < n; j++) {
3056 init_rwsem(&sbi->write_io[i][j].io_rwsem);
3057 sbi->write_io[i][j].sbi = sbi;
3058 sbi->write_io[i][j].bio = NULL;
fb830fc5
CY		 3059 spin_lock_init(&sbi->write_io[i][j].io_lock);
3060 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
a912b54d 3061 }
458e6197 3062 }
971767ca 3063
b873b798 3064 init_rwsem(&sbi->cp_rwsem);
fb51b5ef 3065 init_waitqueue_head(&sbi->cp_wait);
aff063e2
JK		 3066 init_sb_info(sbi);
3067
523be8a6
JK		 3068 err = init_percpu_info(sbi);
3069 if (err)
d7997e63 3070 goto free_bio_info;
523be8a6 3071
0a595eba
JK		 3072 if (F2FS_IO_SIZE(sbi) > 1) {
3073 sbi->write_io_dummy =
a3ebfe4f 3074 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
1727f317
CY		 3075 if (!sbi->write_io_dummy) {
3076 err = -ENOMEM;
d7997e63 3077 goto free_percpu;
1727f317 3078 }
0a595eba
JK		 3079 }
3080
aff063e2
JK		 3081 /* get an inode for meta space */
3082 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
3083 if (IS_ERR(sbi->meta_inode)) {
a07ef784 3084 f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode");
aff063e2 3085 err = PTR_ERR(sbi->meta_inode);
0a595eba 3086 goto free_io_dummy;
aff063e2
JK		 3087 }
3088
4d57b86d 3089 err = f2fs_get_valid_checkpoint(sbi);
a07ef784
NJ		 3090 if (err) {
3091 f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint");
aff063e2 3092 goto free_meta_inode;
a07ef784 3093 }
aff063e2 3094
3c62be17
JK		 3095 /* Initialize device list */
3096 err = f2fs_scan_devices(sbi);
3097 if (err) {
3098 f2fs_msg(sb, KERN_ERR, "Failed to find devices");
3099 goto free_devices;
3100 }
3101
aff063e2
JK		 3102 sbi->total_valid_node_count =
3103 le32_to_cpu(sbi->ckpt->valid_node_count);
513c5f37
JK		 3104 percpu_counter_set(&sbi->total_valid_inode_count,
3105 le32_to_cpu(sbi->ckpt->valid_inode_count));
aff063e2
JK		 3106 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
3107 sbi->total_valid_block_count =
3108 le64_to_cpu(sbi->ckpt->valid_block_count);
3109 sbi->last_valid_block_count = sbi->total_valid_block_count;
daeb433e 3110 sbi->reserved_blocks = 0;
80d42145 3111 sbi->current_reserved_blocks = 0;
7e65be49 3112 limit_reserve_root(sbi);
41382ec4 3113
c227f912
CY		 3114 for (i = 0; i < NR_INODE_TYPE; i++) {
3115 INIT_LIST_HEAD(&sbi->inode_list[i]);
3116 spin_lock_init(&sbi->inode_lock[i]);
3117 }
aff063e2 3118
4d57b86d 3119 f2fs_init_extent_cache_info(sbi);
1dcc336b 3120
4d57b86d 3121 f2fs_init_ino_entry_info(sbi);
aff063e2 3122
50fa53ec
CY		 3123 f2fs_init_fsync_node_info(sbi);
3124
aff063e2 3125 /* setup f2fs internal modules */
4d57b86d 3126 err = f2fs_build_segment_manager(sbi);
a07ef784
NJ		 3127 if (err) {
3128 f2fs_msg(sb, KERN_ERR,
3129 "Failed to initialize F2FS segment manager");
aff063e2 3130 goto free_sm;
a07ef784 3131 }
4d57b86d 3132 err = f2fs_build_node_manager(sbi);
a07ef784
NJ		 3133 if (err) {
3134 f2fs_msg(sb, KERN_ERR,
3135 "Failed to initialize F2FS node manager");
aff063e2 3136 goto free_nm;
a07ef784 3137 }
aff063e2 3138
8f1dbbbb
SL		 3139 /* For write statistics */
3140 if (sb->s_bdev->bd_part)
3141 sbi->sectors_written_start =
dbae2c55
MC		 3142 (u64)part_stat_read(sb->s_bdev->bd_part,
3143 sectors[STAT_WRITE]);
8f1dbbbb
SL		 3144
3145 /* Read accumulated write IO statistics if exists */
3146 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
3147 if (__exist_node_summaries(sbi))
3148 sbi->kbytes_written =
b2dde6fc 3149 le64_to_cpu(seg_i->journal->info.kbytes_written);
8f1dbbbb 3150
4d57b86d 3151 f2fs_build_gc_manager(sbi);
aff063e2
JK		 3152
3153 /* get an inode for node space */
3154 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
3155 if (IS_ERR(sbi->node_inode)) {
a07ef784 3156 f2fs_msg(sb, KERN_ERR, "Failed to read node inode");
aff063e2
JK		 3157 err = PTR_ERR(sbi->node_inode);
3158 goto free_nm;
3159 }
3160
aa51d08a
JK		 3161 err = f2fs_build_stats(sbi);
3162 if (err)
bae01eda 3163 goto free_node_inode;
aa51d08a 3164
aff063e2
JK		 3165 /* read root inode and dentry */
3166 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
3167 if (IS_ERR(root)) {
a07ef784 3168 f2fs_msg(sb, KERN_ERR, "Failed to read root inode");
aff063e2 3169 err = PTR_ERR(root);
bae01eda 3170 goto free_stats;
aff063e2 3171 }
bcbfbd60
CY		 3172 if (!S_ISDIR(root->i_mode) || !root->i_blocks ||
3173 !root->i_size || !root->i_nlink) {
9d847950 3174 iput(root);
8f99a946 3175 err = -EINVAL;
4e423832 3176 goto free_stats;
8f99a946 3177 }
aff063e2
JK		 3178
3179 sb->s_root = d_make_root(root); /* allocate root dentry */
3180 if (!sb->s_root) {
3181 err = -ENOMEM;
3182 goto free_root_inode;
3183 }
3184
dc6b2055 3185 err = f2fs_register_sysfs(sbi);
b59d0bae 3186 if (err)
a398101a 3187 goto free_root_inode;
b59d0bae 3188
ea676733 3189#ifdef CONFIG_QUOTA
76cf05d7 3190 /* Enable quota usage during mount */
deeedd71 3191 if (f2fs_sb_has_quota_ino(sb) && !f2fs_readonly(sb)) {
ea676733 3192 err = f2fs_enable_quotas(sb);
730746ce 3193 if (err)
ea676733
JK		 3194 f2fs_msg(sb, KERN_ERR,
3195 "Cannot turn on quotas: error %d", err);
ea676733
JK		 3196 }
3197#endif
4b2414d0 3198 /* if there are nt orphan nodes free them */
4d57b86d 3199 err = f2fs_recover_orphan_inodes(sbi);
4b2414d0 3200 if (err)
ea676733 3201 goto free_meta;
4b2414d0 3202
4354994f
DR		 3203 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)))
3204 goto skip_recovery;
3205
6437d1b0
JK		 3206 /* recover fsynced data */
3207 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) {
081d78c2
JK		 3208 /*
3209 * mount should be failed, when device has readonly mode, and
3210 * previous checkpoint was not done by clean system shutdown.
3211 */
3212 if (bdev_read_only(sb->s_bdev) &&
aaec2b1d 3213 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
081d78c2 3214 err = -EROFS;
4b2414d0 3215 goto free_meta;
081d78c2 3216 }
2adc3505
CY		 3217
3218 if (need_fsck)
3219 set_sbi_flag(sbi, SBI_NEED_FSCK);
3220
a468f0ef
JK		 3221 if (!retry)
3222 goto skip_recovery;
3223
4d57b86d 3224 err = f2fs_recover_fsync_data(sbi, false);
6781eabb 3225 if (err < 0) {
2adc3505 3226 need_fsck = true;
6437d1b0 3227 f2fs_msg(sb, KERN_ERR,
99e3e858 3228 "Cannot recover all fsync data errno=%d", err);
4b2414d0 3229 goto free_meta;
ed2e621a 3230 }
6781eabb 3231 } else {
4d57b86d 3232 err = f2fs_recover_fsync_data(sbi, true);
6781eabb
JK		 3233
3234 if (!f2fs_readonly(sb) && err > 0) {
3235 err = -EINVAL;
3236 f2fs_msg(sb, KERN_ERR,
3237 "Need to recover fsync data");
ea676733 3238 goto free_meta;
6781eabb 3239 }
6437d1b0 3240 }
a468f0ef 3241skip_recovery:
4d57b86d 3242 /* f2fs_recover_fsync_data() cleared this already */
315df839 3243 clear_sbi_flag(sbi, SBI_POR_DOING);
b59d0bae 3244
4354994f
DR		 3245 if (test_opt(sbi, DISABLE_CHECKPOINT)) {
3246 err = f2fs_disable_checkpoint(sbi);
3247 if (err)
3248 goto free_meta;
3249 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) {
3250 f2fs_enable_checkpoint(sbi);
3251 }
3252
6437d1b0
JK		 3253 /*
3254 * If filesystem is not mounted as read-only then
3255 * do start the gc_thread.
3256 */
6c029932 3257 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) {
6437d1b0 3258 /* After POR, we can run background GC thread.*/
4d57b86d 3259 err = f2fs_start_gc_thread(sbi);
6437d1b0 3260 if (err)
4b2414d0 3261 goto free_meta;
6437d1b0 3262 }
dabc4a5c 3263 kfree(options);
da554e48 3264
3265 /* recover broken superblock */
f2353d7b 3266 if (recovery) {
41214b3c
CY		 3267 err = f2fs_commit_super(sbi, true);
3268 f2fs_msg(sb, KERN_INFO,
99e3e858 3269 "Try to recover %dth superblock, ret: %d",
41214b3c 3270 sbi->valid_super_block ? 1 : 2, err);
da554e48 3271 }
3272
bae01eda
CY		 3273 f2fs_join_shrinker(sbi);
3274
84b89e5d
JK		 3275 f2fs_tuning_parameters(sbi);
3276
1200abb2
JK		 3277 f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx",
3278 cur_cp_version(F2FS_CKPT(sbi)));
6beceb54 3279 f2fs_update_time(sbi, CP_TIME);
d0239e1b 3280 f2fs_update_time(sbi, REQ_TIME);
aff063e2 3281 return 0;
6437d1b0 3282
4b2414d0 3283free_meta:
ea676733 3284#ifdef CONFIG_QUOTA
deeedd71 3285 if (f2fs_sb_has_quota_ino(sb) && !f2fs_readonly(sb))
ea676733
JK		 3286 f2fs_quota_off_umount(sbi->sb);
3287#endif
0f18b462 3288 f2fs_sync_inode_meta(sbi);
4b2414d0 3289 /*
4d57b86d 3290 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes()
4b2414d0 3291 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
4d57b86d
CY		 3292 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which
3293 * falls into an infinite loop in f2fs_sync_meta_pages().
4b2414d0
CY		 3294 */
3295 truncate_inode_pages_final(META_MAPPING(sbi));
dc6b2055 3296 f2fs_unregister_sysfs(sbi);
aff063e2
JK		 3297free_root_inode:
3298 dput(sb->s_root);
3299 sb->s_root = NULL;
bae01eda
CY		 3300free_stats:
3301 f2fs_destroy_stats(sbi);
aff063e2 3302free_node_inode:
4d57b86d 3303 f2fs_release_ino_entry(sbi, true);
bae01eda 3304 truncate_inode_pages_final(NODE_MAPPING(sbi));
aff063e2
JK		 3305 iput(sbi->node_inode);
3306free_nm:
4d57b86d 3307 f2fs_destroy_node_manager(sbi);
aff063e2 3308free_sm:
4d57b86d 3309 f2fs_destroy_segment_manager(sbi);
3c62be17
JK		 3310free_devices:
3311 destroy_device_list(sbi);
aff063e2
JK		 3312 kfree(sbi->ckpt);
3313free_meta_inode:
3314 make_bad_inode(sbi->meta_inode);
3315 iput(sbi->meta_inode);
0a595eba
JK		 3316free_io_dummy:
3317 mempool_destroy(sbi->write_io_dummy);
d7997e63
CY		 3318free_percpu:
3319 destroy_percpu_info(sbi);
3320free_bio_info:
a912b54d
JK		 3321 for (i = 0; i < NR_PAGE_TYPE; i++)
3322 kfree(sbi->write_io[i]);
d7997e63 3323free_options:
4b2414d0
CY		 3324#ifdef CONFIG_QUOTA
3325 for (i = 0; i < MAXQUOTAS; i++)
63189b78 3326 kfree(F2FS_OPTION(sbi).s_qf_names[i]);
4b2414d0 3327#endif
dabc4a5c 3328 kfree(options);
aff063e2 3329free_sb_buf:
b39f0de2 3330 kfree(raw_super);
aff063e2 3331free_sbi:
43b6573b
KM		 3332 if (sbi->s_chksum_driver)
3333 crypto_free_shash(sbi->s_chksum_driver);
aff063e2 3334 kfree(sbi);
ed2e621a
JK		 3335
3336 /* give only one another chance */
3337 if (retry) {
9df47ba7 3338 retry = false;
ed2e621a
JK		 3339 shrink_dcache_sb(sb);
3340 goto try_onemore;
3341 }
aff063e2
JK		 3342 return err;
3343}
3344
3345static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags,
3346 const char *dev_name, void *data)
3347{
3348 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super);
3349}
3350
30a5537f
JK		 3351static void kill_f2fs_super(struct super_block *sb)
3352{
cce13252 3353 if (sb->s_root) {
1cb50f87
JK		 3354 struct f2fs_sb_info *sbi = F2FS_SB(sb);
3355
3356 set_sbi_flag(sbi, SBI_IS_CLOSE);
3357 f2fs_stop_gc_thread(sbi);
3358 f2fs_stop_discard_thread(sbi);
3359
3360 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
3361 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
3362 struct cp_control cpc = {
3363 .reason = CP_UMOUNT,
3364 };
3365 f2fs_write_checkpoint(sbi, &cpc);
3366 }
1378752b
CY		 3367
3368 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb))
3369 sb->s_flags &= ~SB_RDONLY;
cce13252 3370 }
30a5537f
JK		 3371 kill_block_super(sb);
3372}
3373
aff063e2
JK		 3374static struct file_system_type f2fs_fs_type = {
3375 .owner = THIS_MODULE,
3376 .name = "f2fs",
3377 .mount = f2fs_mount,
30a5537f 3378 .kill_sb = kill_f2fs_super,
aff063e2
JK		 3379 .fs_flags = FS_REQUIRES_DEV,
3380};
7f78e035 3381MODULE_ALIAS_FS("f2fs");
aff063e2 3382
6e6093a8 3383static int __init init_inodecache(void)
aff063e2 3384{
5d097056
VD		 3385 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache",
3386 sizeof(struct f2fs_inode_info), 0,
3387 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL);
6bacf52f 3388 if (!f2fs_inode_cachep)
aff063e2
JK		 3389 return -ENOMEM;
3390 return 0;
3391}
3392
3393static void destroy_inodecache(void)
3394{
3395 /*
3396 * Make sure all delayed rcu free inodes are flushed before we
3397 * destroy cache.
3398 */
3399 rcu_barrier();
3400 kmem_cache_destroy(f2fs_inode_cachep);
3401}
3402
3403static int __init init_f2fs_fs(void)
3404{
3405 int err;
3406
4071e67c
AP		 3407 if (PAGE_SIZE != F2FS_BLKSIZE) {
3408 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
3409 PAGE_SIZE, F2FS_BLKSIZE);
3410 return -EINVAL;
3411 }
3412
c0508650
JK		 3413 f2fs_build_trace_ios();
3414
aff063e2
JK		 3415 err = init_inodecache();
3416 if (err)
3417 goto fail;
4d57b86d 3418 err = f2fs_create_node_manager_caches();
aff063e2 3419 if (err)
9890ff3f 3420 goto free_inodecache;
4d57b86d 3421 err = f2fs_create_segment_manager_caches();
aff063e2 3422 if (err)
9890ff3f 3423 goto free_node_manager_caches;
4d57b86d 3424 err = f2fs_create_checkpoint_caches();
aff063e2 3425 if (err)
06292073 3426 goto free_segment_manager_caches;
4d57b86d 3427 err = f2fs_create_extent_cache();
1dcc336b
CY		 3428 if (err)
3429 goto free_checkpoint_caches;
dc6b2055 3430 err = f2fs_init_sysfs();
a398101a 3431 if (err)
1dcc336b 3432 goto free_extent_cache;
2658e50d 3433 err = register_shrinker(&f2fs_shrinker_info);
cfc4d971 3434 if (err)
a398101a 3435 goto free_sysfs;
2658e50d
JK		 3436 err = register_filesystem(&f2fs_fs_type);
3437 if (err)
3438 goto free_shrinker;
787c7b8c
CY		 3439 err = f2fs_create_root_stats();
3440 if (err)
3441 goto free_filesystem;
6dbb1796
EB		 3442 err = f2fs_init_post_read_processing();
3443 if (err)
3444 goto free_root_stats;
9890ff3f
ZH		 3445 return 0;
3446
6dbb1796
EB		 3447free_root_stats:
3448 f2fs_destroy_root_stats();
787c7b8c
CY		 3449free_filesystem:
3450 unregister_filesystem(&f2fs_fs_type);
2658e50d
JK		 3451free_shrinker:
3452 unregister_shrinker(&f2fs_shrinker_info);
a398101a 3453free_sysfs:
dc6b2055 3454 f2fs_exit_sysfs();
1dcc336b 3455free_extent_cache:
4d57b86d 3456 f2fs_destroy_extent_cache();
9890ff3f 3457free_checkpoint_caches:
4d57b86d 3458 f2fs_destroy_checkpoint_caches();
7fd9e544 3459free_segment_manager_caches:
4d57b86d 3460 f2fs_destroy_segment_manager_caches();
9890ff3f 3461free_node_manager_caches:
4d57b86d 3462 f2fs_destroy_node_manager_caches();
9890ff3f
ZH		 3463free_inodecache:
3464 destroy_inodecache();
aff063e2
JK		 3465fail:
3466 return err;
3467}
3468
3469static void __exit exit_f2fs_fs(void)
3470{
6dbb1796 3471 f2fs_destroy_post_read_processing();
4589d25d 3472 f2fs_destroy_root_stats();
aff063e2 3473 unregister_filesystem(&f2fs_fs_type);
b8bef79d 3474 unregister_shrinker(&f2fs_shrinker_info);
dc6b2055 3475 f2fs_exit_sysfs();
4d57b86d
CY		 3476 f2fs_destroy_extent_cache();
3477 f2fs_destroy_checkpoint_caches();
3478 f2fs_destroy_segment_manager_caches();
3479 f2fs_destroy_node_manager_caches();
aff063e2 3480 destroy_inodecache();
351f4fba 3481 f2fs_destroy_trace_ios();
aff063e2
JK		 3482}
3483
3484module_init(init_f2fs_fs)
3485module_exit(exit_f2fs_fs)
3486
3487MODULE_AUTHOR("Samsung Electronics's Praesto Team");
3488MODULE_DESCRIPTION("Flash Friendly File System");
3489MODULE_LICENSE("GPL");
b4b9d34c 3490
Linux 6.x block layer and io_uring tree(s)