| 1 | /* |
| 2 | * fs/f2fs/super.c |
| 3 | * |
| 4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| 5 | * http://www.samsung.com/ |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/fs.h> |
| 14 | #include <linux/statfs.h> |
| 15 | #include <linux/buffer_head.h> |
| 16 | #include <linux/backing-dev.h> |
| 17 | #include <linux/kthread.h> |
| 18 | #include <linux/parser.h> |
| 19 | #include <linux/mount.h> |
| 20 | #include <linux/seq_file.h> |
| 21 | #include <linux/proc_fs.h> |
| 22 | #include <linux/random.h> |
| 23 | #include <linux/exportfs.h> |
| 24 | #include <linux/blkdev.h> |
| 25 | #include <linux/quotaops.h> |
| 26 | #include <linux/f2fs_fs.h> |
| 27 | #include <linux/sysfs.h> |
| 28 | #include <linux/quota.h> |
| 29 | |
| 30 | #include "f2fs.h" |
| 31 | #include "node.h" |
| 32 | #include "segment.h" |
| 33 | #include "xattr.h" |
| 34 | #include "gc.h" |
| 35 | #include "trace.h" |
| 36 | |
| 37 | #define CREATE_TRACE_POINTS |
| 38 | #include <trace/events/f2fs.h> |
| 39 | |
| 40 | static struct kmem_cache *f2fs_inode_cachep; |
| 41 | |
| 42 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 43 | |
| 44 | char *fault_name[FAULT_MAX] = { |
| 45 | [FAULT_KMALLOC] = "kmalloc", |
| 46 | [FAULT_KVMALLOC] = "kvmalloc", |
| 47 | [FAULT_PAGE_ALLOC] = "page alloc", |
| 48 | [FAULT_PAGE_GET] = "page get", |
| 49 | [FAULT_ALLOC_BIO] = "alloc bio", |
| 50 | [FAULT_ALLOC_NID] = "alloc nid", |
| 51 | [FAULT_ORPHAN] = "orphan", |
| 52 | [FAULT_BLOCK] = "no more block", |
| 53 | [FAULT_DIR_DEPTH] = "too big dir depth", |
| 54 | [FAULT_EVICT_INODE] = "evict_inode fail", |
| 55 | [FAULT_TRUNCATE] = "truncate fail", |
| 56 | [FAULT_IO] = "IO error", |
| 57 | [FAULT_CHECKPOINT] = "checkpoint error", |
| 58 | }; |
| 59 | |
| 60 | static void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, |
| 61 | unsigned int rate) |
| 62 | { |
| 63 | struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; |
| 64 | |
| 65 | if (rate) { |
| 66 | atomic_set(&ffi->inject_ops, 0); |
| 67 | ffi->inject_rate = rate; |
| 68 | ffi->inject_type = (1 << FAULT_MAX) - 1; |
| 69 | } else { |
| 70 | memset(ffi, 0, sizeof(struct f2fs_fault_info)); |
| 71 | } |
| 72 | } |
| 73 | #endif |
| 74 | |
| 75 | /* f2fs-wide shrinker description */ |
| 76 | static struct shrinker f2fs_shrinker_info = { |
| 77 | .scan_objects = f2fs_shrink_scan, |
| 78 | .count_objects = f2fs_shrink_count, |
| 79 | .seeks = DEFAULT_SEEKS, |
| 80 | }; |
| 81 | |
| 82 | enum { |
| 83 | Opt_gc_background, |
| 84 | Opt_disable_roll_forward, |
| 85 | Opt_norecovery, |
| 86 | Opt_discard, |
| 87 | Opt_nodiscard, |
| 88 | Opt_noheap, |
| 89 | Opt_heap, |
| 90 | Opt_user_xattr, |
| 91 | Opt_nouser_xattr, |
| 92 | Opt_acl, |
| 93 | Opt_noacl, |
| 94 | Opt_active_logs, |
| 95 | Opt_disable_ext_identify, |
| 96 | Opt_inline_xattr, |
| 97 | Opt_noinline_xattr, |
| 98 | Opt_inline_xattr_size, |
| 99 | Opt_inline_data, |
| 100 | Opt_inline_dentry, |
| 101 | Opt_noinline_dentry, |
| 102 | Opt_flush_merge, |
| 103 | Opt_noflush_merge, |
| 104 | Opt_nobarrier, |
| 105 | Opt_fastboot, |
| 106 | Opt_extent_cache, |
| 107 | Opt_noextent_cache, |
| 108 | Opt_noinline_data, |
| 109 | Opt_data_flush, |
| 110 | Opt_reserve_root, |
| 111 | Opt_resgid, |
| 112 | Opt_resuid, |
| 113 | Opt_mode, |
| 114 | Opt_io_size_bits, |
| 115 | Opt_fault_injection, |
| 116 | Opt_lazytime, |
| 117 | Opt_nolazytime, |
| 118 | Opt_quota, |
| 119 | Opt_noquota, |
| 120 | Opt_usrquota, |
| 121 | Opt_grpquota, |
| 122 | Opt_prjquota, |
| 123 | Opt_usrjquota, |
| 124 | Opt_grpjquota, |
| 125 | Opt_prjjquota, |
| 126 | Opt_offusrjquota, |
| 127 | Opt_offgrpjquota, |
| 128 | Opt_offprjjquota, |
| 129 | Opt_jqfmt_vfsold, |
| 130 | Opt_jqfmt_vfsv0, |
| 131 | Opt_jqfmt_vfsv1, |
| 132 | Opt_whint, |
| 133 | Opt_alloc, |
| 134 | Opt_fsync, |
| 135 | Opt_test_dummy_encryption, |
| 136 | Opt_err, |
| 137 | }; |
| 138 | |
| 139 | static match_table_t f2fs_tokens = { |
| 140 | {Opt_gc_background, "background_gc=%s"}, |
| 141 | {Opt_disable_roll_forward, "disable_roll_forward"}, |
| 142 | {Opt_norecovery, "norecovery"}, |
| 143 | {Opt_discard, "discard"}, |
| 144 | {Opt_nodiscard, "nodiscard"}, |
| 145 | {Opt_noheap, "no_heap"}, |
| 146 | {Opt_heap, "heap"}, |
| 147 | {Opt_user_xattr, "user_xattr"}, |
| 148 | {Opt_nouser_xattr, "nouser_xattr"}, |
| 149 | {Opt_acl, "acl"}, |
| 150 | {Opt_noacl, "noacl"}, |
| 151 | {Opt_active_logs, "active_logs=%u"}, |
| 152 | {Opt_disable_ext_identify, "disable_ext_identify"}, |
| 153 | {Opt_inline_xattr, "inline_xattr"}, |
| 154 | {Opt_noinline_xattr, "noinline_xattr"}, |
| 155 | {Opt_inline_xattr_size, "inline_xattr_size=%u"}, |
| 156 | {Opt_inline_data, "inline_data"}, |
| 157 | {Opt_inline_dentry, "inline_dentry"}, |
| 158 | {Opt_noinline_dentry, "noinline_dentry"}, |
| 159 | {Opt_flush_merge, "flush_merge"}, |
| 160 | {Opt_noflush_merge, "noflush_merge"}, |
| 161 | {Opt_nobarrier, "nobarrier"}, |
| 162 | {Opt_fastboot, "fastboot"}, |
| 163 | {Opt_extent_cache, "extent_cache"}, |
| 164 | {Opt_noextent_cache, "noextent_cache"}, |
| 165 | {Opt_noinline_data, "noinline_data"}, |
| 166 | {Opt_data_flush, "data_flush"}, |
| 167 | {Opt_reserve_root, "reserve_root=%u"}, |
| 168 | {Opt_resgid, "resgid=%u"}, |
| 169 | {Opt_resuid, "resuid=%u"}, |
| 170 | {Opt_mode, "mode=%s"}, |
| 171 | {Opt_io_size_bits, "io_bits=%u"}, |
| 172 | {Opt_fault_injection, "fault_injection=%u"}, |
| 173 | {Opt_lazytime, "lazytime"}, |
| 174 | {Opt_nolazytime, "nolazytime"}, |
| 175 | {Opt_quota, "quota"}, |
| 176 | {Opt_noquota, "noquota"}, |
| 177 | {Opt_usrquota, "usrquota"}, |
| 178 | {Opt_grpquota, "grpquota"}, |
| 179 | {Opt_prjquota, "prjquota"}, |
| 180 | {Opt_usrjquota, "usrjquota=%s"}, |
| 181 | {Opt_grpjquota, "grpjquota=%s"}, |
| 182 | {Opt_prjjquota, "prjjquota=%s"}, |
| 183 | {Opt_offusrjquota, "usrjquota="}, |
| 184 | {Opt_offgrpjquota, "grpjquota="}, |
| 185 | {Opt_offprjjquota, "prjjquota="}, |
| 186 | {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, |
| 187 | {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, |
| 188 | {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, |
| 189 | {Opt_whint, "whint_mode=%s"}, |
| 190 | {Opt_alloc, "alloc_mode=%s"}, |
| 191 | {Opt_fsync, "fsync_mode=%s"}, |
| 192 | {Opt_test_dummy_encryption, "test_dummy_encryption"}, |
| 193 | {Opt_err, NULL}, |
| 194 | }; |
| 195 | |
| 196 | void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...) |
| 197 | { |
| 198 | struct va_format vaf; |
| 199 | va_list args; |
| 200 | |
| 201 | va_start(args, fmt); |
| 202 | vaf.fmt = fmt; |
| 203 | vaf.va = &args; |
| 204 | printk_ratelimited("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf); |
| 205 | va_end(args); |
| 206 | } |
| 207 | |
| 208 | static inline void limit_reserve_root(struct f2fs_sb_info *sbi) |
| 209 | { |
| 210 | block_t limit = (sbi->user_block_count << 1) / 1000; |
| 211 | |
| 212 | /* limit is 0.2% */ |
| 213 | if (test_opt(sbi, RESERVE_ROOT) && |
| 214 | F2FS_OPTION(sbi).root_reserved_blocks > limit) { |
| 215 | F2FS_OPTION(sbi).root_reserved_blocks = limit; |
| 216 | f2fs_msg(sbi->sb, KERN_INFO, |
| 217 | "Reduce reserved blocks for root = %u", |
| 218 | F2FS_OPTION(sbi).root_reserved_blocks); |
| 219 | } |
| 220 | if (!test_opt(sbi, RESERVE_ROOT) && |
| 221 | (!uid_eq(F2FS_OPTION(sbi).s_resuid, |
| 222 | make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || |
| 223 | !gid_eq(F2FS_OPTION(sbi).s_resgid, |
| 224 | make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) |
| 225 | f2fs_msg(sbi->sb, KERN_INFO, |
| 226 | "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", |
| 227 | from_kuid_munged(&init_user_ns, |
| 228 | F2FS_OPTION(sbi).s_resuid), |
| 229 | from_kgid_munged(&init_user_ns, |
| 230 | F2FS_OPTION(sbi).s_resgid)); |
| 231 | } |
| 232 | |
| 233 | static void init_once(void *foo) |
| 234 | { |
| 235 | struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; |
| 236 | |
| 237 | inode_init_once(&fi->vfs_inode); |
| 238 | } |
| 239 | |
| 240 | #ifdef CONFIG_QUOTA |
| 241 | static const char * const quotatypes[] = INITQFNAMES; |
| 242 | #define QTYPE2NAME(t) (quotatypes[t]) |
| 243 | static int f2fs_set_qf_name(struct super_block *sb, int qtype, |
| 244 | substring_t *args) |
| 245 | { |
| 246 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 247 | char *qname; |
| 248 | int ret = -EINVAL; |
| 249 | |
| 250 | if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { |
| 251 | f2fs_msg(sb, KERN_ERR, |
| 252 | "Cannot change journaled " |
| 253 | "quota options when quota turned on"); |
| 254 | return -EINVAL; |
| 255 | } |
| 256 | if (f2fs_sb_has_quota_ino(sb)) { |
| 257 | f2fs_msg(sb, KERN_INFO, |
| 258 | "QUOTA feature is enabled, so ignore qf_name"); |
| 259 | return 0; |
| 260 | } |
| 261 | |
| 262 | qname = match_strdup(args); |
| 263 | if (!qname) { |
| 264 | f2fs_msg(sb, KERN_ERR, |
| 265 | "Not enough memory for storing quotafile name"); |
| 266 | return -EINVAL; |
| 267 | } |
| 268 | if (F2FS_OPTION(sbi).s_qf_names[qtype]) { |
| 269 | if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) |
| 270 | ret = 0; |
| 271 | else |
| 272 | f2fs_msg(sb, KERN_ERR, |
| 273 | "%s quota file already specified", |
| 274 | QTYPE2NAME(qtype)); |
| 275 | goto errout; |
| 276 | } |
| 277 | if (strchr(qname, '/')) { |
| 278 | f2fs_msg(sb, KERN_ERR, |
| 279 | "quotafile must be on filesystem root"); |
| 280 | goto errout; |
| 281 | } |
| 282 | F2FS_OPTION(sbi).s_qf_names[qtype] = qname; |
| 283 | set_opt(sbi, QUOTA); |
| 284 | return 0; |
| 285 | errout: |
| 286 | kfree(qname); |
| 287 | return ret; |
| 288 | } |
| 289 | |
| 290 | static int f2fs_clear_qf_name(struct super_block *sb, int qtype) |
| 291 | { |
| 292 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 293 | |
| 294 | if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { |
| 295 | f2fs_msg(sb, KERN_ERR, "Cannot change journaled quota options" |
| 296 | " when quota turned on"); |
| 297 | return -EINVAL; |
| 298 | } |
| 299 | kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); |
| 300 | F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; |
| 301 | return 0; |
| 302 | } |
| 303 | |
| 304 | static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) |
| 305 | { |
| 306 | /* |
| 307 | * We do the test below only for project quotas. 'usrquota' and |
| 308 | * 'grpquota' mount options are allowed even without quota feature |
| 309 | * to support legacy quotas in quota files. |
| 310 | */ |
| 311 | if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi->sb)) { |
| 312 | f2fs_msg(sbi->sb, KERN_ERR, "Project quota feature not enabled. " |
| 313 | "Cannot enable project quota enforcement."); |
| 314 | return -1; |
| 315 | } |
| 316 | if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || |
| 317 | F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || |
| 318 | F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { |
| 319 | if (test_opt(sbi, USRQUOTA) && |
| 320 | F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) |
| 321 | clear_opt(sbi, USRQUOTA); |
| 322 | |
| 323 | if (test_opt(sbi, GRPQUOTA) && |
| 324 | F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) |
| 325 | clear_opt(sbi, GRPQUOTA); |
| 326 | |
| 327 | if (test_opt(sbi, PRJQUOTA) && |
| 328 | F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) |
| 329 | clear_opt(sbi, PRJQUOTA); |
| 330 | |
| 331 | if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || |
| 332 | test_opt(sbi, PRJQUOTA)) { |
| 333 | f2fs_msg(sbi->sb, KERN_ERR, "old and new quota " |
| 334 | "format mixing"); |
| 335 | return -1; |
| 336 | } |
| 337 | |
| 338 | if (!F2FS_OPTION(sbi).s_jquota_fmt) { |
| 339 | f2fs_msg(sbi->sb, KERN_ERR, "journaled quota format " |
| 340 | "not specified"); |
| 341 | return -1; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | if (f2fs_sb_has_quota_ino(sbi->sb) && F2FS_OPTION(sbi).s_jquota_fmt) { |
| 346 | f2fs_msg(sbi->sb, KERN_INFO, |
| 347 | "QUOTA feature is enabled, so ignore jquota_fmt"); |
| 348 | F2FS_OPTION(sbi).s_jquota_fmt = 0; |
| 349 | } |
| 350 | if (f2fs_sb_has_quota_ino(sbi->sb) && f2fs_readonly(sbi->sb)) { |
| 351 | f2fs_msg(sbi->sb, KERN_INFO, |
| 352 | "Filesystem with quota feature cannot be mounted RDWR " |
| 353 | "without CONFIG_QUOTA"); |
| 354 | return -1; |
| 355 | } |
| 356 | return 0; |
| 357 | } |
| 358 | #endif |
| 359 | |
| 360 | static int parse_options(struct super_block *sb, char *options) |
| 361 | { |
| 362 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 363 | struct request_queue *q; |
| 364 | substring_t args[MAX_OPT_ARGS]; |
| 365 | char *p, *name; |
| 366 | int arg = 0; |
| 367 | kuid_t uid; |
| 368 | kgid_t gid; |
| 369 | #ifdef CONFIG_QUOTA |
| 370 | int ret; |
| 371 | #endif |
| 372 | |
| 373 | if (!options) |
| 374 | return 0; |
| 375 | |
| 376 | while ((p = strsep(&options, ",")) != NULL) { |
| 377 | int token; |
| 378 | if (!*p) |
| 379 | continue; |
| 380 | /* |
| 381 | * Initialize args struct so we know whether arg was |
| 382 | * found; some options take optional arguments. |
| 383 | */ |
| 384 | args[0].to = args[0].from = NULL; |
| 385 | token = match_token(p, f2fs_tokens, args); |
| 386 | |
| 387 | switch (token) { |
| 388 | case Opt_gc_background: |
| 389 | name = match_strdup(&args[0]); |
| 390 | |
| 391 | if (!name) |
| 392 | return -ENOMEM; |
| 393 | if (strlen(name) == 2 && !strncmp(name, "on", 2)) { |
| 394 | set_opt(sbi, BG_GC); |
| 395 | clear_opt(sbi, FORCE_FG_GC); |
| 396 | } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) { |
| 397 | clear_opt(sbi, BG_GC); |
| 398 | clear_opt(sbi, FORCE_FG_GC); |
| 399 | } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) { |
| 400 | set_opt(sbi, BG_GC); |
| 401 | set_opt(sbi, FORCE_FG_GC); |
| 402 | } else { |
| 403 | kfree(name); |
| 404 | return -EINVAL; |
| 405 | } |
| 406 | kfree(name); |
| 407 | break; |
| 408 | case Opt_disable_roll_forward: |
| 409 | set_opt(sbi, DISABLE_ROLL_FORWARD); |
| 410 | break; |
| 411 | case Opt_norecovery: |
| 412 | /* this option mounts f2fs with ro */ |
| 413 | set_opt(sbi, DISABLE_ROLL_FORWARD); |
| 414 | if (!f2fs_readonly(sb)) |
| 415 | return -EINVAL; |
| 416 | break; |
| 417 | case Opt_discard: |
| 418 | q = bdev_get_queue(sb->s_bdev); |
| 419 | if (blk_queue_discard(q)) { |
| 420 | set_opt(sbi, DISCARD); |
| 421 | } else if (!f2fs_sb_has_blkzoned(sb)) { |
| 422 | f2fs_msg(sb, KERN_WARNING, |
| 423 | "mounting with \"discard\" option, but " |
| 424 | "the device does not support discard"); |
| 425 | } |
| 426 | break; |
| 427 | case Opt_nodiscard: |
| 428 | if (f2fs_sb_has_blkzoned(sb)) { |
| 429 | f2fs_msg(sb, KERN_WARNING, |
| 430 | "discard is required for zoned block devices"); |
| 431 | return -EINVAL; |
| 432 | } |
| 433 | clear_opt(sbi, DISCARD); |
| 434 | break; |
| 435 | case Opt_noheap: |
| 436 | set_opt(sbi, NOHEAP); |
| 437 | break; |
| 438 | case Opt_heap: |
| 439 | clear_opt(sbi, NOHEAP); |
| 440 | break; |
| 441 | #ifdef CONFIG_F2FS_FS_XATTR |
| 442 | case Opt_user_xattr: |
| 443 | set_opt(sbi, XATTR_USER); |
| 444 | break; |
| 445 | case Opt_nouser_xattr: |
| 446 | clear_opt(sbi, XATTR_USER); |
| 447 | break; |
| 448 | case Opt_inline_xattr: |
| 449 | set_opt(sbi, INLINE_XATTR); |
| 450 | break; |
| 451 | case Opt_noinline_xattr: |
| 452 | clear_opt(sbi, INLINE_XATTR); |
| 453 | break; |
| 454 | case Opt_inline_xattr_size: |
| 455 | if (args->from && match_int(args, &arg)) |
| 456 | return -EINVAL; |
| 457 | set_opt(sbi, INLINE_XATTR_SIZE); |
| 458 | F2FS_OPTION(sbi).inline_xattr_size = arg; |
| 459 | break; |
| 460 | #else |
| 461 | case Opt_user_xattr: |
| 462 | f2fs_msg(sb, KERN_INFO, |
| 463 | "user_xattr options not supported"); |
| 464 | break; |
| 465 | case Opt_nouser_xattr: |
| 466 | f2fs_msg(sb, KERN_INFO, |
| 467 | "nouser_xattr options not supported"); |
| 468 | break; |
| 469 | case Opt_inline_xattr: |
| 470 | f2fs_msg(sb, KERN_INFO, |
| 471 | "inline_xattr options not supported"); |
| 472 | break; |
| 473 | case Opt_noinline_xattr: |
| 474 | f2fs_msg(sb, KERN_INFO, |
| 475 | "noinline_xattr options not supported"); |
| 476 | break; |
| 477 | #endif |
| 478 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 479 | case Opt_acl: |
| 480 | set_opt(sbi, POSIX_ACL); |
| 481 | break; |
| 482 | case Opt_noacl: |
| 483 | clear_opt(sbi, POSIX_ACL); |
| 484 | break; |
| 485 | #else |
| 486 | case Opt_acl: |
| 487 | f2fs_msg(sb, KERN_INFO, "acl options not supported"); |
| 488 | break; |
| 489 | case Opt_noacl: |
| 490 | f2fs_msg(sb, KERN_INFO, "noacl options not supported"); |
| 491 | break; |
| 492 | #endif |
| 493 | case Opt_active_logs: |
| 494 | if (args->from && match_int(args, &arg)) |
| 495 | return -EINVAL; |
| 496 | if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE) |
| 497 | return -EINVAL; |
| 498 | F2FS_OPTION(sbi).active_logs = arg; |
| 499 | break; |
| 500 | case Opt_disable_ext_identify: |
| 501 | set_opt(sbi, DISABLE_EXT_IDENTIFY); |
| 502 | break; |
| 503 | case Opt_inline_data: |
| 504 | set_opt(sbi, INLINE_DATA); |
| 505 | break; |
| 506 | case Opt_inline_dentry: |
| 507 | set_opt(sbi, INLINE_DENTRY); |
| 508 | break; |
| 509 | case Opt_noinline_dentry: |
| 510 | clear_opt(sbi, INLINE_DENTRY); |
| 511 | break; |
| 512 | case Opt_flush_merge: |
| 513 | set_opt(sbi, FLUSH_MERGE); |
| 514 | break; |
| 515 | case Opt_noflush_merge: |
| 516 | clear_opt(sbi, FLUSH_MERGE); |
| 517 | break; |
| 518 | case Opt_nobarrier: |
| 519 | set_opt(sbi, NOBARRIER); |
| 520 | break; |
| 521 | case Opt_fastboot: |
| 522 | set_opt(sbi, FASTBOOT); |
| 523 | break; |
| 524 | case Opt_extent_cache: |
| 525 | set_opt(sbi, EXTENT_CACHE); |
| 526 | break; |
| 527 | case Opt_noextent_cache: |
| 528 | clear_opt(sbi, EXTENT_CACHE); |
| 529 | break; |
| 530 | case Opt_noinline_data: |
| 531 | clear_opt(sbi, INLINE_DATA); |
| 532 | break; |
| 533 | case Opt_data_flush: |
| 534 | set_opt(sbi, DATA_FLUSH); |
| 535 | break; |
| 536 | case Opt_reserve_root: |
| 537 | if (args->from && match_int(args, &arg)) |
| 538 | return -EINVAL; |
| 539 | if (test_opt(sbi, RESERVE_ROOT)) { |
| 540 | f2fs_msg(sb, KERN_INFO, |
| 541 | "Preserve previous reserve_root=%u", |
| 542 | F2FS_OPTION(sbi).root_reserved_blocks); |
| 543 | } else { |
| 544 | F2FS_OPTION(sbi).root_reserved_blocks = arg; |
| 545 | set_opt(sbi, RESERVE_ROOT); |
| 546 | } |
| 547 | break; |
| 548 | case Opt_resuid: |
| 549 | if (args->from && match_int(args, &arg)) |
| 550 | return -EINVAL; |
| 551 | uid = make_kuid(current_user_ns(), arg); |
| 552 | if (!uid_valid(uid)) { |
| 553 | f2fs_msg(sb, KERN_ERR, |
| 554 | "Invalid uid value %d", arg); |
| 555 | return -EINVAL; |
| 556 | } |
| 557 | F2FS_OPTION(sbi).s_resuid = uid; |
| 558 | break; |
| 559 | case Opt_resgid: |
| 560 | if (args->from && match_int(args, &arg)) |
| 561 | return -EINVAL; |
| 562 | gid = make_kgid(current_user_ns(), arg); |
| 563 | if (!gid_valid(gid)) { |
| 564 | f2fs_msg(sb, KERN_ERR, |
| 565 | "Invalid gid value %d", arg); |
| 566 | return -EINVAL; |
| 567 | } |
| 568 | F2FS_OPTION(sbi).s_resgid = gid; |
| 569 | break; |
| 570 | case Opt_mode: |
| 571 | name = match_strdup(&args[0]); |
| 572 | |
| 573 | if (!name) |
| 574 | return -ENOMEM; |
| 575 | if (strlen(name) == 8 && |
| 576 | !strncmp(name, "adaptive", 8)) { |
| 577 | if (f2fs_sb_has_blkzoned(sb)) { |
| 578 | f2fs_msg(sb, KERN_WARNING, |
| 579 | "adaptive mode is not allowed with " |
| 580 | "zoned block device feature"); |
| 581 | kfree(name); |
| 582 | return -EINVAL; |
| 583 | } |
| 584 | set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); |
| 585 | } else if (strlen(name) == 3 && |
| 586 | !strncmp(name, "lfs", 3)) { |
| 587 | set_opt_mode(sbi, F2FS_MOUNT_LFS); |
| 588 | } else { |
| 589 | kfree(name); |
| 590 | return -EINVAL; |
| 591 | } |
| 592 | kfree(name); |
| 593 | break; |
| 594 | case Opt_io_size_bits: |
| 595 | if (args->from && match_int(args, &arg)) |
| 596 | return -EINVAL; |
| 597 | if (arg > __ilog2_u32(BIO_MAX_PAGES)) { |
| 598 | f2fs_msg(sb, KERN_WARNING, |
| 599 | "Not support %d, larger than %d", |
| 600 | 1 << arg, BIO_MAX_PAGES); |
| 601 | return -EINVAL; |
| 602 | } |
| 603 | F2FS_OPTION(sbi).write_io_size_bits = arg; |
| 604 | break; |
| 605 | case Opt_fault_injection: |
| 606 | if (args->from && match_int(args, &arg)) |
| 607 | return -EINVAL; |
| 608 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 609 | f2fs_build_fault_attr(sbi, arg); |
| 610 | set_opt(sbi, FAULT_INJECTION); |
| 611 | #else |
| 612 | f2fs_msg(sb, KERN_INFO, |
| 613 | "FAULT_INJECTION was not selected"); |
| 614 | #endif |
| 615 | break; |
| 616 | case Opt_lazytime: |
| 617 | sb->s_flags |= SB_LAZYTIME; |
| 618 | break; |
| 619 | case Opt_nolazytime: |
| 620 | sb->s_flags &= ~SB_LAZYTIME; |
| 621 | break; |
| 622 | #ifdef CONFIG_QUOTA |
| 623 | case Opt_quota: |
| 624 | case Opt_usrquota: |
| 625 | set_opt(sbi, USRQUOTA); |
| 626 | break; |
| 627 | case Opt_grpquota: |
| 628 | set_opt(sbi, GRPQUOTA); |
| 629 | break; |
| 630 | case Opt_prjquota: |
| 631 | set_opt(sbi, PRJQUOTA); |
| 632 | break; |
| 633 | case Opt_usrjquota: |
| 634 | ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); |
| 635 | if (ret) |
| 636 | return ret; |
| 637 | break; |
| 638 | case Opt_grpjquota: |
| 639 | ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); |
| 640 | if (ret) |
| 641 | return ret; |
| 642 | break; |
| 643 | case Opt_prjjquota: |
| 644 | ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); |
| 645 | if (ret) |
| 646 | return ret; |
| 647 | break; |
| 648 | case Opt_offusrjquota: |
| 649 | ret = f2fs_clear_qf_name(sb, USRQUOTA); |
| 650 | if (ret) |
| 651 | return ret; |
| 652 | break; |
| 653 | case Opt_offgrpjquota: |
| 654 | ret = f2fs_clear_qf_name(sb, GRPQUOTA); |
| 655 | if (ret) |
| 656 | return ret; |
| 657 | break; |
| 658 | case Opt_offprjjquota: |
| 659 | ret = f2fs_clear_qf_name(sb, PRJQUOTA); |
| 660 | if (ret) |
| 661 | return ret; |
| 662 | break; |
| 663 | case Opt_jqfmt_vfsold: |
| 664 | F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; |
| 665 | break; |
| 666 | case Opt_jqfmt_vfsv0: |
| 667 | F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; |
| 668 | break; |
| 669 | case Opt_jqfmt_vfsv1: |
| 670 | F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; |
| 671 | break; |
| 672 | case Opt_noquota: |
| 673 | clear_opt(sbi, QUOTA); |
| 674 | clear_opt(sbi, USRQUOTA); |
| 675 | clear_opt(sbi, GRPQUOTA); |
| 676 | clear_opt(sbi, PRJQUOTA); |
| 677 | break; |
| 678 | #else |
| 679 | case Opt_quota: |
| 680 | case Opt_usrquota: |
| 681 | case Opt_grpquota: |
| 682 | case Opt_prjquota: |
| 683 | case Opt_usrjquota: |
| 684 | case Opt_grpjquota: |
| 685 | case Opt_prjjquota: |
| 686 | case Opt_offusrjquota: |
| 687 | case Opt_offgrpjquota: |
| 688 | case Opt_offprjjquota: |
| 689 | case Opt_jqfmt_vfsold: |
| 690 | case Opt_jqfmt_vfsv0: |
| 691 | case Opt_jqfmt_vfsv1: |
| 692 | case Opt_noquota: |
| 693 | f2fs_msg(sb, KERN_INFO, |
| 694 | "quota operations not supported"); |
| 695 | break; |
| 696 | #endif |
| 697 | case Opt_whint: |
| 698 | name = match_strdup(&args[0]); |
| 699 | if (!name) |
| 700 | return -ENOMEM; |
| 701 | if (strlen(name) == 10 && |
| 702 | !strncmp(name, "user-based", 10)) { |
| 703 | F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER; |
| 704 | } else if (strlen(name) == 3 && |
| 705 | !strncmp(name, "off", 3)) { |
| 706 | F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; |
| 707 | } else if (strlen(name) == 8 && |
| 708 | !strncmp(name, "fs-based", 8)) { |
| 709 | F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS; |
| 710 | } else { |
| 711 | kfree(name); |
| 712 | return -EINVAL; |
| 713 | } |
| 714 | kfree(name); |
| 715 | break; |
| 716 | case Opt_alloc: |
| 717 | name = match_strdup(&args[0]); |
| 718 | if (!name) |
| 719 | return -ENOMEM; |
| 720 | |
| 721 | if (strlen(name) == 7 && |
| 722 | !strncmp(name, "default", 7)) { |
| 723 | F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; |
| 724 | } else if (strlen(name) == 5 && |
| 725 | !strncmp(name, "reuse", 5)) { |
| 726 | F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; |
| 727 | } else { |
| 728 | kfree(name); |
| 729 | return -EINVAL; |
| 730 | } |
| 731 | kfree(name); |
| 732 | break; |
| 733 | case Opt_fsync: |
| 734 | name = match_strdup(&args[0]); |
| 735 | if (!name) |
| 736 | return -ENOMEM; |
| 737 | if (strlen(name) == 5 && |
| 738 | !strncmp(name, "posix", 5)) { |
| 739 | F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; |
| 740 | } else if (strlen(name) == 6 && |
| 741 | !strncmp(name, "strict", 6)) { |
| 742 | F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; |
| 743 | } else if (strlen(name) == 9 && |
| 744 | !strncmp(name, "nobarrier", 9)) { |
| 745 | F2FS_OPTION(sbi).fsync_mode = |
| 746 | FSYNC_MODE_NOBARRIER; |
| 747 | } else { |
| 748 | kfree(name); |
| 749 | return -EINVAL; |
| 750 | } |
| 751 | kfree(name); |
| 752 | break; |
| 753 | case Opt_test_dummy_encryption: |
| 754 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 755 | if (!f2fs_sb_has_encrypt(sb)) { |
| 756 | f2fs_msg(sb, KERN_ERR, "Encrypt feature is off"); |
| 757 | return -EINVAL; |
| 758 | } |
| 759 | |
| 760 | F2FS_OPTION(sbi).test_dummy_encryption = true; |
| 761 | f2fs_msg(sb, KERN_INFO, |
| 762 | "Test dummy encryption mode enabled"); |
| 763 | #else |
| 764 | f2fs_msg(sb, KERN_INFO, |
| 765 | "Test dummy encryption mount option ignored"); |
| 766 | #endif |
| 767 | break; |
| 768 | default: |
| 769 | f2fs_msg(sb, KERN_ERR, |
| 770 | "Unrecognized mount option \"%s\" or missing value", |
| 771 | p); |
| 772 | return -EINVAL; |
| 773 | } |
| 774 | } |
| 775 | #ifdef CONFIG_QUOTA |
| 776 | if (f2fs_check_quota_options(sbi)) |
| 777 | return -EINVAL; |
| 778 | #endif |
| 779 | |
| 780 | if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) { |
| 781 | f2fs_msg(sb, KERN_ERR, |
| 782 | "Should set mode=lfs with %uKB-sized IO", |
| 783 | F2FS_IO_SIZE_KB(sbi)); |
| 784 | return -EINVAL; |
| 785 | } |
| 786 | |
| 787 | if (test_opt(sbi, INLINE_XATTR_SIZE)) { |
| 788 | if (!f2fs_sb_has_extra_attr(sb) || |
| 789 | !f2fs_sb_has_flexible_inline_xattr(sb)) { |
| 790 | f2fs_msg(sb, KERN_ERR, |
| 791 | "extra_attr or flexible_inline_xattr " |
| 792 | "feature is off"); |
| 793 | return -EINVAL; |
| 794 | } |
| 795 | if (!test_opt(sbi, INLINE_XATTR)) { |
| 796 | f2fs_msg(sb, KERN_ERR, |
| 797 | "inline_xattr_size option should be " |
| 798 | "set with inline_xattr option"); |
| 799 | return -EINVAL; |
| 800 | } |
| 801 | if (!F2FS_OPTION(sbi).inline_xattr_size || |
| 802 | F2FS_OPTION(sbi).inline_xattr_size >= |
| 803 | DEF_ADDRS_PER_INODE - |
| 804 | F2FS_TOTAL_EXTRA_ATTR_SIZE - |
| 805 | DEF_INLINE_RESERVED_SIZE - |
| 806 | DEF_MIN_INLINE_SIZE) { |
| 807 | f2fs_msg(sb, KERN_ERR, |
| 808 | "inline xattr size is out of range"); |
| 809 | return -EINVAL; |
| 810 | } |
| 811 | } |
| 812 | |
| 813 | /* Not pass down write hints if the number of active logs is lesser |
| 814 | * than NR_CURSEG_TYPE. |
| 815 | */ |
| 816 | if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE) |
| 817 | F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; |
| 818 | return 0; |
| 819 | } |
| 820 | |
| 821 | static struct inode *f2fs_alloc_inode(struct super_block *sb) |
| 822 | { |
| 823 | struct f2fs_inode_info *fi; |
| 824 | |
| 825 | fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); |
| 826 | if (!fi) |
| 827 | return NULL; |
| 828 | |
| 829 | init_once((void *) fi); |
| 830 | |
| 831 | /* Initialize f2fs-specific inode info */ |
| 832 | atomic_set(&fi->dirty_pages, 0); |
| 833 | fi->i_current_depth = 1; |
| 834 | init_rwsem(&fi->i_sem); |
| 835 | INIT_LIST_HEAD(&fi->dirty_list); |
| 836 | INIT_LIST_HEAD(&fi->gdirty_list); |
| 837 | INIT_LIST_HEAD(&fi->inmem_ilist); |
| 838 | INIT_LIST_HEAD(&fi->inmem_pages); |
| 839 | mutex_init(&fi->inmem_lock); |
| 840 | init_rwsem(&fi->i_gc_rwsem[READ]); |
| 841 | init_rwsem(&fi->i_gc_rwsem[WRITE]); |
| 842 | init_rwsem(&fi->i_mmap_sem); |
| 843 | init_rwsem(&fi->i_xattr_sem); |
| 844 | |
| 845 | /* Will be used by directory only */ |
| 846 | fi->i_dir_level = F2FS_SB(sb)->dir_level; |
| 847 | |
| 848 | return &fi->vfs_inode; |
| 849 | } |
| 850 | |
| 851 | static int f2fs_drop_inode(struct inode *inode) |
| 852 | { |
| 853 | int ret; |
| 854 | /* |
| 855 | * This is to avoid a deadlock condition like below. |
| 856 | * writeback_single_inode(inode) |
| 857 | * - f2fs_write_data_page |
| 858 | * - f2fs_gc -> iput -> evict |
| 859 | * - inode_wait_for_writeback(inode) |
| 860 | */ |
| 861 | if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { |
| 862 | if (!inode->i_nlink && !is_bad_inode(inode)) { |
| 863 | /* to avoid evict_inode call simultaneously */ |
| 864 | atomic_inc(&inode->i_count); |
| 865 | spin_unlock(&inode->i_lock); |
| 866 | |
| 867 | /* some remained atomic pages should discarded */ |
| 868 | if (f2fs_is_atomic_file(inode)) |
| 869 | drop_inmem_pages(inode); |
| 870 | |
| 871 | /* should remain fi->extent_tree for writepage */ |
| 872 | f2fs_destroy_extent_node(inode); |
| 873 | |
| 874 | sb_start_intwrite(inode->i_sb); |
| 875 | f2fs_i_size_write(inode, 0); |
| 876 | |
| 877 | if (F2FS_HAS_BLOCKS(inode)) |
| 878 | f2fs_truncate(inode); |
| 879 | |
| 880 | sb_end_intwrite(inode->i_sb); |
| 881 | |
| 882 | spin_lock(&inode->i_lock); |
| 883 | atomic_dec(&inode->i_count); |
| 884 | } |
| 885 | trace_f2fs_drop_inode(inode, 0); |
| 886 | return 0; |
| 887 | } |
| 888 | ret = generic_drop_inode(inode); |
| 889 | trace_f2fs_drop_inode(inode, ret); |
| 890 | return ret; |
| 891 | } |
| 892 | |
| 893 | int f2fs_inode_dirtied(struct inode *inode, bool sync) |
| 894 | { |
| 895 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 896 | int ret = 0; |
| 897 | |
| 898 | spin_lock(&sbi->inode_lock[DIRTY_META]); |
| 899 | if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { |
| 900 | ret = 1; |
| 901 | } else { |
| 902 | set_inode_flag(inode, FI_DIRTY_INODE); |
| 903 | stat_inc_dirty_inode(sbi, DIRTY_META); |
| 904 | } |
| 905 | if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { |
| 906 | list_add_tail(&F2FS_I(inode)->gdirty_list, |
| 907 | &sbi->inode_list[DIRTY_META]); |
| 908 | inc_page_count(sbi, F2FS_DIRTY_IMETA); |
| 909 | } |
| 910 | spin_unlock(&sbi->inode_lock[DIRTY_META]); |
| 911 | return ret; |
| 912 | } |
| 913 | |
| 914 | void f2fs_inode_synced(struct inode *inode) |
| 915 | { |
| 916 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 917 | |
| 918 | spin_lock(&sbi->inode_lock[DIRTY_META]); |
| 919 | if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { |
| 920 | spin_unlock(&sbi->inode_lock[DIRTY_META]); |
| 921 | return; |
| 922 | } |
| 923 | if (!list_empty(&F2FS_I(inode)->gdirty_list)) { |
| 924 | list_del_init(&F2FS_I(inode)->gdirty_list); |
| 925 | dec_page_count(sbi, F2FS_DIRTY_IMETA); |
| 926 | } |
| 927 | clear_inode_flag(inode, FI_DIRTY_INODE); |
| 928 | clear_inode_flag(inode, FI_AUTO_RECOVER); |
| 929 | stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); |
| 930 | spin_unlock(&sbi->inode_lock[DIRTY_META]); |
| 931 | } |
| 932 | |
| 933 | /* |
| 934 | * f2fs_dirty_inode() is called from __mark_inode_dirty() |
| 935 | * |
| 936 | * We should call set_dirty_inode to write the dirty inode through write_inode. |
| 937 | */ |
| 938 | static void f2fs_dirty_inode(struct inode *inode, int flags) |
| 939 | { |
| 940 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 941 | |
| 942 | if (inode->i_ino == F2FS_NODE_INO(sbi) || |
| 943 | inode->i_ino == F2FS_META_INO(sbi)) |
| 944 | return; |
| 945 | |
| 946 | if (flags == I_DIRTY_TIME) |
| 947 | return; |
| 948 | |
| 949 | if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) |
| 950 | clear_inode_flag(inode, FI_AUTO_RECOVER); |
| 951 | |
| 952 | f2fs_inode_dirtied(inode, false); |
| 953 | } |
| 954 | |
| 955 | static void f2fs_i_callback(struct rcu_head *head) |
| 956 | { |
| 957 | struct inode *inode = container_of(head, struct inode, i_rcu); |
| 958 | kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); |
| 959 | } |
| 960 | |
| 961 | static void f2fs_destroy_inode(struct inode *inode) |
| 962 | { |
| 963 | call_rcu(&inode->i_rcu, f2fs_i_callback); |
| 964 | } |
| 965 | |
| 966 | static void destroy_percpu_info(struct f2fs_sb_info *sbi) |
| 967 | { |
| 968 | percpu_counter_destroy(&sbi->alloc_valid_block_count); |
| 969 | percpu_counter_destroy(&sbi->total_valid_inode_count); |
| 970 | } |
| 971 | |
| 972 | static void destroy_device_list(struct f2fs_sb_info *sbi) |
| 973 | { |
| 974 | int i; |
| 975 | |
| 976 | for (i = 0; i < sbi->s_ndevs; i++) { |
| 977 | blkdev_put(FDEV(i).bdev, FMODE_EXCL); |
| 978 | #ifdef CONFIG_BLK_DEV_ZONED |
| 979 | kfree(FDEV(i).blkz_type); |
| 980 | #endif |
| 981 | } |
| 982 | kfree(sbi->devs); |
| 983 | } |
| 984 | |
| 985 | static void f2fs_put_super(struct super_block *sb) |
| 986 | { |
| 987 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 988 | int i; |
| 989 | bool dropped; |
| 990 | |
| 991 | f2fs_quota_off_umount(sb); |
| 992 | |
| 993 | /* prevent remaining shrinker jobs */ |
| 994 | mutex_lock(&sbi->umount_mutex); |
| 995 | |
| 996 | /* |
| 997 | * We don't need to do checkpoint when superblock is clean. |
| 998 | * But, the previous checkpoint was not done by umount, it needs to do |
| 999 | * clean checkpoint again. |
| 1000 | */ |
| 1001 | if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || |
| 1002 | !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { |
| 1003 | struct cp_control cpc = { |
| 1004 | .reason = CP_UMOUNT, |
| 1005 | }; |
| 1006 | write_checkpoint(sbi, &cpc); |
| 1007 | } |
| 1008 | |
| 1009 | /* be sure to wait for any on-going discard commands */ |
| 1010 | dropped = f2fs_wait_discard_bios(sbi); |
| 1011 | |
| 1012 | if (f2fs_discard_en(sbi) && !sbi->discard_blks && !dropped) { |
| 1013 | struct cp_control cpc = { |
| 1014 | .reason = CP_UMOUNT | CP_TRIMMED, |
| 1015 | }; |
| 1016 | write_checkpoint(sbi, &cpc); |
| 1017 | } |
| 1018 | |
| 1019 | /* write_checkpoint can update stat informaion */ |
| 1020 | f2fs_destroy_stats(sbi); |
| 1021 | |
| 1022 | /* |
| 1023 | * normally superblock is clean, so we need to release this. |
| 1024 | * In addition, EIO will skip do checkpoint, we need this as well. |
| 1025 | */ |
| 1026 | release_ino_entry(sbi, true); |
| 1027 | |
| 1028 | f2fs_leave_shrinker(sbi); |
| 1029 | mutex_unlock(&sbi->umount_mutex); |
| 1030 | |
| 1031 | /* our cp_error case, we can wait for any writeback page */ |
| 1032 | f2fs_flush_merged_writes(sbi); |
| 1033 | |
| 1034 | iput(sbi->node_inode); |
| 1035 | iput(sbi->meta_inode); |
| 1036 | |
| 1037 | /* destroy f2fs internal modules */ |
| 1038 | destroy_node_manager(sbi); |
| 1039 | destroy_segment_manager(sbi); |
| 1040 | |
| 1041 | kfree(sbi->ckpt); |
| 1042 | |
| 1043 | f2fs_unregister_sysfs(sbi); |
| 1044 | |
| 1045 | sb->s_fs_info = NULL; |
| 1046 | if (sbi->s_chksum_driver) |
| 1047 | crypto_free_shash(sbi->s_chksum_driver); |
| 1048 | kfree(sbi->raw_super); |
| 1049 | |
| 1050 | destroy_device_list(sbi); |
| 1051 | mempool_destroy(sbi->write_io_dummy); |
| 1052 | #ifdef CONFIG_QUOTA |
| 1053 | for (i = 0; i < MAXQUOTAS; i++) |
| 1054 | kfree(F2FS_OPTION(sbi).s_qf_names[i]); |
| 1055 | #endif |
| 1056 | destroy_percpu_info(sbi); |
| 1057 | for (i = 0; i < NR_PAGE_TYPE; i++) |
| 1058 | kfree(sbi->write_io[i]); |
| 1059 | kfree(sbi); |
| 1060 | } |
| 1061 | |
| 1062 | int f2fs_sync_fs(struct super_block *sb, int sync) |
| 1063 | { |
| 1064 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 1065 | int err = 0; |
| 1066 | |
| 1067 | if (unlikely(f2fs_cp_error(sbi))) |
| 1068 | return 0; |
| 1069 | |
| 1070 | trace_f2fs_sync_fs(sb, sync); |
| 1071 | |
| 1072 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
| 1073 | return -EAGAIN; |
| 1074 | |
| 1075 | if (sync) { |
| 1076 | struct cp_control cpc; |
| 1077 | |
| 1078 | cpc.reason = __get_cp_reason(sbi); |
| 1079 | |
| 1080 | mutex_lock(&sbi->gc_mutex); |
| 1081 | err = write_checkpoint(sbi, &cpc); |
| 1082 | mutex_unlock(&sbi->gc_mutex); |
| 1083 | } |
| 1084 | f2fs_trace_ios(NULL, 1); |
| 1085 | |
| 1086 | return err; |
| 1087 | } |
| 1088 | |
| 1089 | static int f2fs_freeze(struct super_block *sb) |
| 1090 | { |
| 1091 | if (f2fs_readonly(sb)) |
| 1092 | return 0; |
| 1093 | |
| 1094 | /* IO error happened before */ |
| 1095 | if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) |
| 1096 | return -EIO; |
| 1097 | |
| 1098 | /* must be clean, since sync_filesystem() was already called */ |
| 1099 | if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) |
| 1100 | return -EINVAL; |
| 1101 | return 0; |
| 1102 | } |
| 1103 | |
| 1104 | static int f2fs_unfreeze(struct super_block *sb) |
| 1105 | { |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | #ifdef CONFIG_QUOTA |
| 1110 | static int f2fs_statfs_project(struct super_block *sb, |
| 1111 | kprojid_t projid, struct kstatfs *buf) |
| 1112 | { |
| 1113 | struct kqid qid; |
| 1114 | struct dquot *dquot; |
| 1115 | u64 limit; |
| 1116 | u64 curblock; |
| 1117 | |
| 1118 | qid = make_kqid_projid(projid); |
| 1119 | dquot = dqget(sb, qid); |
| 1120 | if (IS_ERR(dquot)) |
| 1121 | return PTR_ERR(dquot); |
| 1122 | spin_lock(&dq_data_lock); |
| 1123 | |
| 1124 | limit = (dquot->dq_dqb.dqb_bsoftlimit ? |
| 1125 | dquot->dq_dqb.dqb_bsoftlimit : |
| 1126 | dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits; |
| 1127 | if (limit && buf->f_blocks > limit) { |
| 1128 | curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits; |
| 1129 | buf->f_blocks = limit; |
| 1130 | buf->f_bfree = buf->f_bavail = |
| 1131 | (buf->f_blocks > curblock) ? |
| 1132 | (buf->f_blocks - curblock) : 0; |
| 1133 | } |
| 1134 | |
| 1135 | limit = dquot->dq_dqb.dqb_isoftlimit ? |
| 1136 | dquot->dq_dqb.dqb_isoftlimit : |
| 1137 | dquot->dq_dqb.dqb_ihardlimit; |
| 1138 | if (limit && buf->f_files > limit) { |
| 1139 | buf->f_files = limit; |
| 1140 | buf->f_ffree = |
| 1141 | (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? |
| 1142 | (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; |
| 1143 | } |
| 1144 | |
| 1145 | spin_unlock(&dq_data_lock); |
| 1146 | dqput(dquot); |
| 1147 | return 0; |
| 1148 | } |
| 1149 | #endif |
| 1150 | |
| 1151 | static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) |
| 1152 | { |
| 1153 | struct super_block *sb = dentry->d_sb; |
| 1154 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 1155 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); |
| 1156 | block_t total_count, user_block_count, start_count; |
| 1157 | u64 avail_node_count; |
| 1158 | |
| 1159 | total_count = le64_to_cpu(sbi->raw_super->block_count); |
| 1160 | user_block_count = sbi->user_block_count; |
| 1161 | start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); |
| 1162 | buf->f_type = F2FS_SUPER_MAGIC; |
| 1163 | buf->f_bsize = sbi->blocksize; |
| 1164 | |
| 1165 | buf->f_blocks = total_count - start_count; |
| 1166 | buf->f_bfree = user_block_count - valid_user_blocks(sbi) - |
| 1167 | sbi->current_reserved_blocks; |
| 1168 | if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) |
| 1169 | buf->f_bavail = buf->f_bfree - |
| 1170 | F2FS_OPTION(sbi).root_reserved_blocks; |
| 1171 | else |
| 1172 | buf->f_bavail = 0; |
| 1173 | |
| 1174 | avail_node_count = sbi->total_node_count - sbi->nquota_files - |
| 1175 | F2FS_RESERVED_NODE_NUM; |
| 1176 | |
| 1177 | if (avail_node_count > user_block_count) { |
| 1178 | buf->f_files = user_block_count; |
| 1179 | buf->f_ffree = buf->f_bavail; |
| 1180 | } else { |
| 1181 | buf->f_files = avail_node_count; |
| 1182 | buf->f_ffree = min(avail_node_count - valid_node_count(sbi), |
| 1183 | buf->f_bavail); |
| 1184 | } |
| 1185 | |
| 1186 | buf->f_namelen = F2FS_NAME_LEN; |
| 1187 | buf->f_fsid.val[0] = (u32)id; |
| 1188 | buf->f_fsid.val[1] = (u32)(id >> 32); |
| 1189 | |
| 1190 | #ifdef CONFIG_QUOTA |
| 1191 | if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && |
| 1192 | sb_has_quota_limits_enabled(sb, PRJQUOTA)) { |
| 1193 | f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); |
| 1194 | } |
| 1195 | #endif |
| 1196 | return 0; |
| 1197 | } |
| 1198 | |
| 1199 | static inline void f2fs_show_quota_options(struct seq_file *seq, |
| 1200 | struct super_block *sb) |
| 1201 | { |
| 1202 | #ifdef CONFIG_QUOTA |
| 1203 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 1204 | |
| 1205 | if (F2FS_OPTION(sbi).s_jquota_fmt) { |
| 1206 | char *fmtname = ""; |
| 1207 | |
| 1208 | switch (F2FS_OPTION(sbi).s_jquota_fmt) { |
| 1209 | case QFMT_VFS_OLD: |
| 1210 | fmtname = "vfsold"; |
| 1211 | break; |
| 1212 | case QFMT_VFS_V0: |
| 1213 | fmtname = "vfsv0"; |
| 1214 | break; |
| 1215 | case QFMT_VFS_V1: |
| 1216 | fmtname = "vfsv1"; |
| 1217 | break; |
| 1218 | } |
| 1219 | seq_printf(seq, ",jqfmt=%s", fmtname); |
| 1220 | } |
| 1221 | |
| 1222 | if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) |
| 1223 | seq_show_option(seq, "usrjquota", |
| 1224 | F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); |
| 1225 | |
| 1226 | if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) |
| 1227 | seq_show_option(seq, "grpjquota", |
| 1228 | F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); |
| 1229 | |
| 1230 | if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) |
| 1231 | seq_show_option(seq, "prjjquota", |
| 1232 | F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); |
| 1233 | #endif |
| 1234 | } |
| 1235 | |
| 1236 | static int f2fs_show_options(struct seq_file *seq, struct dentry *root) |
| 1237 | { |
| 1238 | struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); |
| 1239 | |
| 1240 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) { |
| 1241 | if (test_opt(sbi, FORCE_FG_GC)) |
| 1242 | seq_printf(seq, ",background_gc=%s", "sync"); |
| 1243 | else |
| 1244 | seq_printf(seq, ",background_gc=%s", "on"); |
| 1245 | } else { |
| 1246 | seq_printf(seq, ",background_gc=%s", "off"); |
| 1247 | } |
| 1248 | if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
| 1249 | seq_puts(seq, ",disable_roll_forward"); |
| 1250 | if (test_opt(sbi, DISCARD)) |
| 1251 | seq_puts(seq, ",discard"); |
| 1252 | if (test_opt(sbi, NOHEAP)) |
| 1253 | seq_puts(seq, ",no_heap"); |
| 1254 | else |
| 1255 | seq_puts(seq, ",heap"); |
| 1256 | #ifdef CONFIG_F2FS_FS_XATTR |
| 1257 | if (test_opt(sbi, XATTR_USER)) |
| 1258 | seq_puts(seq, ",user_xattr"); |
| 1259 | else |
| 1260 | seq_puts(seq, ",nouser_xattr"); |
| 1261 | if (test_opt(sbi, INLINE_XATTR)) |
| 1262 | seq_puts(seq, ",inline_xattr"); |
| 1263 | else |
| 1264 | seq_puts(seq, ",noinline_xattr"); |
| 1265 | if (test_opt(sbi, INLINE_XATTR_SIZE)) |
| 1266 | seq_printf(seq, ",inline_xattr_size=%u", |
| 1267 | F2FS_OPTION(sbi).inline_xattr_size); |
| 1268 | #endif |
| 1269 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 1270 | if (test_opt(sbi, POSIX_ACL)) |
| 1271 | seq_puts(seq, ",acl"); |
| 1272 | else |
| 1273 | seq_puts(seq, ",noacl"); |
| 1274 | #endif |
| 1275 | if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) |
| 1276 | seq_puts(seq, ",disable_ext_identify"); |
| 1277 | if (test_opt(sbi, INLINE_DATA)) |
| 1278 | seq_puts(seq, ",inline_data"); |
| 1279 | else |
| 1280 | seq_puts(seq, ",noinline_data"); |
| 1281 | if (test_opt(sbi, INLINE_DENTRY)) |
| 1282 | seq_puts(seq, ",inline_dentry"); |
| 1283 | else |
| 1284 | seq_puts(seq, ",noinline_dentry"); |
| 1285 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) |
| 1286 | seq_puts(seq, ",flush_merge"); |
| 1287 | if (test_opt(sbi, NOBARRIER)) |
| 1288 | seq_puts(seq, ",nobarrier"); |
| 1289 | if (test_opt(sbi, FASTBOOT)) |
| 1290 | seq_puts(seq, ",fastboot"); |
| 1291 | if (test_opt(sbi, EXTENT_CACHE)) |
| 1292 | seq_puts(seq, ",extent_cache"); |
| 1293 | else |
| 1294 | seq_puts(seq, ",noextent_cache"); |
| 1295 | if (test_opt(sbi, DATA_FLUSH)) |
| 1296 | seq_puts(seq, ",data_flush"); |
| 1297 | |
| 1298 | seq_puts(seq, ",mode="); |
| 1299 | if (test_opt(sbi, ADAPTIVE)) |
| 1300 | seq_puts(seq, "adaptive"); |
| 1301 | else if (test_opt(sbi, LFS)) |
| 1302 | seq_puts(seq, "lfs"); |
| 1303 | seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); |
| 1304 | if (test_opt(sbi, RESERVE_ROOT)) |
| 1305 | seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", |
| 1306 | F2FS_OPTION(sbi).root_reserved_blocks, |
| 1307 | from_kuid_munged(&init_user_ns, |
| 1308 | F2FS_OPTION(sbi).s_resuid), |
| 1309 | from_kgid_munged(&init_user_ns, |
| 1310 | F2FS_OPTION(sbi).s_resgid)); |
| 1311 | if (F2FS_IO_SIZE_BITS(sbi)) |
| 1312 | seq_printf(seq, ",io_size=%uKB", F2FS_IO_SIZE_KB(sbi)); |
| 1313 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1314 | if (test_opt(sbi, FAULT_INJECTION)) |
| 1315 | seq_printf(seq, ",fault_injection=%u", |
| 1316 | F2FS_OPTION(sbi).fault_info.inject_rate); |
| 1317 | #endif |
| 1318 | #ifdef CONFIG_QUOTA |
| 1319 | if (test_opt(sbi, QUOTA)) |
| 1320 | seq_puts(seq, ",quota"); |
| 1321 | if (test_opt(sbi, USRQUOTA)) |
| 1322 | seq_puts(seq, ",usrquota"); |
| 1323 | if (test_opt(sbi, GRPQUOTA)) |
| 1324 | seq_puts(seq, ",grpquota"); |
| 1325 | if (test_opt(sbi, PRJQUOTA)) |
| 1326 | seq_puts(seq, ",prjquota"); |
| 1327 | #endif |
| 1328 | f2fs_show_quota_options(seq, sbi->sb); |
| 1329 | if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) |
| 1330 | seq_printf(seq, ",whint_mode=%s", "user-based"); |
| 1331 | else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) |
| 1332 | seq_printf(seq, ",whint_mode=%s", "fs-based"); |
| 1333 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 1334 | if (F2FS_OPTION(sbi).test_dummy_encryption) |
| 1335 | seq_puts(seq, ",test_dummy_encryption"); |
| 1336 | #endif |
| 1337 | |
| 1338 | if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) |
| 1339 | seq_printf(seq, ",alloc_mode=%s", "default"); |
| 1340 | else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) |
| 1341 | seq_printf(seq, ",alloc_mode=%s", "reuse"); |
| 1342 | |
| 1343 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) |
| 1344 | seq_printf(seq, ",fsync_mode=%s", "posix"); |
| 1345 | else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) |
| 1346 | seq_printf(seq, ",fsync_mode=%s", "strict"); |
| 1347 | return 0; |
| 1348 | } |
| 1349 | |
| 1350 | static void default_options(struct f2fs_sb_info *sbi) |
| 1351 | { |
| 1352 | /* init some FS parameters */ |
| 1353 | F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE; |
| 1354 | F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; |
| 1355 | F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; |
| 1356 | F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; |
| 1357 | F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; |
| 1358 | F2FS_OPTION(sbi).test_dummy_encryption = false; |
| 1359 | sbi->readdir_ra = 1; |
| 1360 | |
| 1361 | set_opt(sbi, BG_GC); |
| 1362 | set_opt(sbi, INLINE_XATTR); |
| 1363 | set_opt(sbi, INLINE_DATA); |
| 1364 | set_opt(sbi, INLINE_DENTRY); |
| 1365 | set_opt(sbi, EXTENT_CACHE); |
| 1366 | set_opt(sbi, NOHEAP); |
| 1367 | sbi->sb->s_flags |= SB_LAZYTIME; |
| 1368 | set_opt(sbi, FLUSH_MERGE); |
| 1369 | if (f2fs_sb_has_blkzoned(sbi->sb)) { |
| 1370 | set_opt_mode(sbi, F2FS_MOUNT_LFS); |
| 1371 | set_opt(sbi, DISCARD); |
| 1372 | } else { |
| 1373 | set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); |
| 1374 | } |
| 1375 | |
| 1376 | #ifdef CONFIG_F2FS_FS_XATTR |
| 1377 | set_opt(sbi, XATTR_USER); |
| 1378 | #endif |
| 1379 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 1380 | set_opt(sbi, POSIX_ACL); |
| 1381 | #endif |
| 1382 | |
| 1383 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1384 | f2fs_build_fault_attr(sbi, 0); |
| 1385 | #endif |
| 1386 | } |
| 1387 | |
| 1388 | #ifdef CONFIG_QUOTA |
| 1389 | static int f2fs_enable_quotas(struct super_block *sb); |
| 1390 | #endif |
| 1391 | static int f2fs_remount(struct super_block *sb, int *flags, char *data) |
| 1392 | { |
| 1393 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 1394 | struct f2fs_mount_info org_mount_opt; |
| 1395 | unsigned long old_sb_flags; |
| 1396 | int err; |
| 1397 | bool need_restart_gc = false; |
| 1398 | bool need_stop_gc = false; |
| 1399 | bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); |
| 1400 | #ifdef CONFIG_QUOTA |
| 1401 | int i, j; |
| 1402 | #endif |
| 1403 | |
| 1404 | /* |
| 1405 | * Save the old mount options in case we |
| 1406 | * need to restore them. |
| 1407 | */ |
| 1408 | org_mount_opt = sbi->mount_opt; |
| 1409 | old_sb_flags = sb->s_flags; |
| 1410 | |
| 1411 | #ifdef CONFIG_QUOTA |
| 1412 | org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; |
| 1413 | for (i = 0; i < MAXQUOTAS; i++) { |
| 1414 | if (F2FS_OPTION(sbi).s_qf_names[i]) { |
| 1415 | org_mount_opt.s_qf_names[i] = |
| 1416 | kstrdup(F2FS_OPTION(sbi).s_qf_names[i], |
| 1417 | GFP_KERNEL); |
| 1418 | if (!org_mount_opt.s_qf_names[i]) { |
| 1419 | for (j = 0; j < i; j++) |
| 1420 | kfree(org_mount_opt.s_qf_names[j]); |
| 1421 | return -ENOMEM; |
| 1422 | } |
| 1423 | } else { |
| 1424 | org_mount_opt.s_qf_names[i] = NULL; |
| 1425 | } |
| 1426 | } |
| 1427 | #endif |
| 1428 | |
| 1429 | /* recover superblocks we couldn't write due to previous RO mount */ |
| 1430 | if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { |
| 1431 | err = f2fs_commit_super(sbi, false); |
| 1432 | f2fs_msg(sb, KERN_INFO, |
| 1433 | "Try to recover all the superblocks, ret: %d", err); |
| 1434 | if (!err) |
| 1435 | clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); |
| 1436 | } |
| 1437 | |
| 1438 | default_options(sbi); |
| 1439 | |
| 1440 | /* parse mount options */ |
| 1441 | err = parse_options(sb, data); |
| 1442 | if (err) |
| 1443 | goto restore_opts; |
| 1444 | |
| 1445 | /* |
| 1446 | * Previous and new state of filesystem is RO, |
| 1447 | * so skip checking GC and FLUSH_MERGE conditions. |
| 1448 | */ |
| 1449 | if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) |
| 1450 | goto skip; |
| 1451 | |
| 1452 | #ifdef CONFIG_QUOTA |
| 1453 | if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { |
| 1454 | err = dquot_suspend(sb, -1); |
| 1455 | if (err < 0) |
| 1456 | goto restore_opts; |
| 1457 | } else if (f2fs_readonly(sb) && !(*flags & MS_RDONLY)) { |
| 1458 | /* dquot_resume needs RW */ |
| 1459 | sb->s_flags &= ~SB_RDONLY; |
| 1460 | if (sb_any_quota_suspended(sb)) { |
| 1461 | dquot_resume(sb, -1); |
| 1462 | } else if (f2fs_sb_has_quota_ino(sb)) { |
| 1463 | err = f2fs_enable_quotas(sb); |
| 1464 | if (err) |
| 1465 | goto restore_opts; |
| 1466 | } |
| 1467 | } |
| 1468 | #endif |
| 1469 | /* disallow enable/disable extent_cache dynamically */ |
| 1470 | if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { |
| 1471 | err = -EINVAL; |
| 1472 | f2fs_msg(sbi->sb, KERN_WARNING, |
| 1473 | "switch extent_cache option is not allowed"); |
| 1474 | goto restore_opts; |
| 1475 | } |
| 1476 | |
| 1477 | /* |
| 1478 | * We stop the GC thread if FS is mounted as RO |
| 1479 | * or if background_gc = off is passed in mount |
| 1480 | * option. Also sync the filesystem. |
| 1481 | */ |
| 1482 | if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) { |
| 1483 | if (sbi->gc_thread) { |
| 1484 | stop_gc_thread(sbi); |
| 1485 | need_restart_gc = true; |
| 1486 | } |
| 1487 | } else if (!sbi->gc_thread) { |
| 1488 | err = start_gc_thread(sbi); |
| 1489 | if (err) |
| 1490 | goto restore_opts; |
| 1491 | need_stop_gc = true; |
| 1492 | } |
| 1493 | |
| 1494 | if (*flags & SB_RDONLY || |
| 1495 | F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) { |
| 1496 | writeback_inodes_sb(sb, WB_REASON_SYNC); |
| 1497 | sync_inodes_sb(sb); |
| 1498 | |
| 1499 | set_sbi_flag(sbi, SBI_IS_DIRTY); |
| 1500 | set_sbi_flag(sbi, SBI_IS_CLOSE); |
| 1501 | f2fs_sync_fs(sb, 1); |
| 1502 | clear_sbi_flag(sbi, SBI_IS_CLOSE); |
| 1503 | } |
| 1504 | |
| 1505 | /* |
| 1506 | * We stop issue flush thread if FS is mounted as RO |
| 1507 | * or if flush_merge is not passed in mount option. |
| 1508 | */ |
| 1509 | if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { |
| 1510 | clear_opt(sbi, FLUSH_MERGE); |
| 1511 | destroy_flush_cmd_control(sbi, false); |
| 1512 | } else { |
| 1513 | err = create_flush_cmd_control(sbi); |
| 1514 | if (err) |
| 1515 | goto restore_gc; |
| 1516 | } |
| 1517 | skip: |
| 1518 | #ifdef CONFIG_QUOTA |
| 1519 | /* Release old quota file names */ |
| 1520 | for (i = 0; i < MAXQUOTAS; i++) |
| 1521 | kfree(org_mount_opt.s_qf_names[i]); |
| 1522 | #endif |
| 1523 | /* Update the POSIXACL Flag */ |
| 1524 | sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | |
| 1525 | (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); |
| 1526 | |
| 1527 | limit_reserve_root(sbi); |
| 1528 | return 0; |
| 1529 | restore_gc: |
| 1530 | if (need_restart_gc) { |
| 1531 | if (start_gc_thread(sbi)) |
| 1532 | f2fs_msg(sbi->sb, KERN_WARNING, |
| 1533 | "background gc thread has stopped"); |
| 1534 | } else if (need_stop_gc) { |
| 1535 | stop_gc_thread(sbi); |
| 1536 | } |
| 1537 | restore_opts: |
| 1538 | #ifdef CONFIG_QUOTA |
| 1539 | F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; |
| 1540 | for (i = 0; i < MAXQUOTAS; i++) { |
| 1541 | kfree(F2FS_OPTION(sbi).s_qf_names[i]); |
| 1542 | F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; |
| 1543 | } |
| 1544 | #endif |
| 1545 | sbi->mount_opt = org_mount_opt; |
| 1546 | sb->s_flags = old_sb_flags; |
| 1547 | return err; |
| 1548 | } |
| 1549 | |
| 1550 | #ifdef CONFIG_QUOTA |
| 1551 | /* Read data from quotafile */ |
| 1552 | static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, |
| 1553 | size_t len, loff_t off) |
| 1554 | { |
| 1555 | struct inode *inode = sb_dqopt(sb)->files[type]; |
| 1556 | struct address_space *mapping = inode->i_mapping; |
| 1557 | block_t blkidx = F2FS_BYTES_TO_BLK(off); |
| 1558 | int offset = off & (sb->s_blocksize - 1); |
| 1559 | int tocopy; |
| 1560 | size_t toread; |
| 1561 | loff_t i_size = i_size_read(inode); |
| 1562 | struct page *page; |
| 1563 | char *kaddr; |
| 1564 | |
| 1565 | if (off > i_size) |
| 1566 | return 0; |
| 1567 | |
| 1568 | if (off + len > i_size) |
| 1569 | len = i_size - off; |
| 1570 | toread = len; |
| 1571 | while (toread > 0) { |
| 1572 | tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); |
| 1573 | repeat: |
| 1574 | page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); |
| 1575 | if (IS_ERR(page)) { |
| 1576 | if (PTR_ERR(page) == -ENOMEM) { |
| 1577 | congestion_wait(BLK_RW_ASYNC, HZ/50); |
| 1578 | goto repeat; |
| 1579 | } |
| 1580 | return PTR_ERR(page); |
| 1581 | } |
| 1582 | |
| 1583 | lock_page(page); |
| 1584 | |
| 1585 | if (unlikely(page->mapping != mapping)) { |
| 1586 | f2fs_put_page(page, 1); |
| 1587 | goto repeat; |
| 1588 | } |
| 1589 | if (unlikely(!PageUptodate(page))) { |
| 1590 | f2fs_put_page(page, 1); |
| 1591 | return -EIO; |
| 1592 | } |
| 1593 | |
| 1594 | kaddr = kmap_atomic(page); |
| 1595 | memcpy(data, kaddr + offset, tocopy); |
| 1596 | kunmap_atomic(kaddr); |
| 1597 | f2fs_put_page(page, 1); |
| 1598 | |
| 1599 | offset = 0; |
| 1600 | toread -= tocopy; |
| 1601 | data += tocopy; |
| 1602 | blkidx++; |
| 1603 | } |
| 1604 | return len; |
| 1605 | } |
| 1606 | |
| 1607 | /* Write to quotafile */ |
| 1608 | static ssize_t f2fs_quota_write(struct super_block *sb, int type, |
| 1609 | const char *data, size_t len, loff_t off) |
| 1610 | { |
| 1611 | struct inode *inode = sb_dqopt(sb)->files[type]; |
| 1612 | struct address_space *mapping = inode->i_mapping; |
| 1613 | const struct address_space_operations *a_ops = mapping->a_ops; |
| 1614 | int offset = off & (sb->s_blocksize - 1); |
| 1615 | size_t towrite = len; |
| 1616 | struct page *page; |
| 1617 | char *kaddr; |
| 1618 | int err = 0; |
| 1619 | int tocopy; |
| 1620 | |
| 1621 | while (towrite > 0) { |
| 1622 | tocopy = min_t(unsigned long, sb->s_blocksize - offset, |
| 1623 | towrite); |
| 1624 | retry: |
| 1625 | err = a_ops->write_begin(NULL, mapping, off, tocopy, 0, |
| 1626 | &page, NULL); |
| 1627 | if (unlikely(err)) { |
| 1628 | if (err == -ENOMEM) { |
| 1629 | congestion_wait(BLK_RW_ASYNC, HZ/50); |
| 1630 | goto retry; |
| 1631 | } |
| 1632 | break; |
| 1633 | } |
| 1634 | |
| 1635 | kaddr = kmap_atomic(page); |
| 1636 | memcpy(kaddr + offset, data, tocopy); |
| 1637 | kunmap_atomic(kaddr); |
| 1638 | flush_dcache_page(page); |
| 1639 | |
| 1640 | a_ops->write_end(NULL, mapping, off, tocopy, tocopy, |
| 1641 | page, NULL); |
| 1642 | offset = 0; |
| 1643 | towrite -= tocopy; |
| 1644 | off += tocopy; |
| 1645 | data += tocopy; |
| 1646 | cond_resched(); |
| 1647 | } |
| 1648 | |
| 1649 | if (len == towrite) |
| 1650 | return err; |
| 1651 | inode->i_mtime = inode->i_ctime = current_time(inode); |
| 1652 | f2fs_mark_inode_dirty_sync(inode, false); |
| 1653 | return len - towrite; |
| 1654 | } |
| 1655 | |
| 1656 | static struct dquot **f2fs_get_dquots(struct inode *inode) |
| 1657 | { |
| 1658 | return F2FS_I(inode)->i_dquot; |
| 1659 | } |
| 1660 | |
| 1661 | static qsize_t *f2fs_get_reserved_space(struct inode *inode) |
| 1662 | { |
| 1663 | return &F2FS_I(inode)->i_reserved_quota; |
| 1664 | } |
| 1665 | |
| 1666 | static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) |
| 1667 | { |
| 1668 | return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], |
| 1669 | F2FS_OPTION(sbi).s_jquota_fmt, type); |
| 1670 | } |
| 1671 | |
| 1672 | int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) |
| 1673 | { |
| 1674 | int enabled = 0; |
| 1675 | int i, err; |
| 1676 | |
| 1677 | if (f2fs_sb_has_quota_ino(sbi->sb) && rdonly) { |
| 1678 | err = f2fs_enable_quotas(sbi->sb); |
| 1679 | if (err) { |
| 1680 | f2fs_msg(sbi->sb, KERN_ERR, |
| 1681 | "Cannot turn on quota_ino: %d", err); |
| 1682 | return 0; |
| 1683 | } |
| 1684 | return 1; |
| 1685 | } |
| 1686 | |
| 1687 | for (i = 0; i < MAXQUOTAS; i++) { |
| 1688 | if (F2FS_OPTION(sbi).s_qf_names[i]) { |
| 1689 | err = f2fs_quota_on_mount(sbi, i); |
| 1690 | if (!err) { |
| 1691 | enabled = 1; |
| 1692 | continue; |
| 1693 | } |
| 1694 | f2fs_msg(sbi->sb, KERN_ERR, |
| 1695 | "Cannot turn on quotas: %d on %d", err, i); |
| 1696 | } |
| 1697 | } |
| 1698 | return enabled; |
| 1699 | } |
| 1700 | |
| 1701 | static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, |
| 1702 | unsigned int flags) |
| 1703 | { |
| 1704 | struct inode *qf_inode; |
| 1705 | unsigned long qf_inum; |
| 1706 | int err; |
| 1707 | |
| 1708 | BUG_ON(!f2fs_sb_has_quota_ino(sb)); |
| 1709 | |
| 1710 | qf_inum = f2fs_qf_ino(sb, type); |
| 1711 | if (!qf_inum) |
| 1712 | return -EPERM; |
| 1713 | |
| 1714 | qf_inode = f2fs_iget(sb, qf_inum); |
| 1715 | if (IS_ERR(qf_inode)) { |
| 1716 | f2fs_msg(sb, KERN_ERR, |
| 1717 | "Bad quota inode %u:%lu", type, qf_inum); |
| 1718 | return PTR_ERR(qf_inode); |
| 1719 | } |
| 1720 | |
| 1721 | /* Don't account quota for quota files to avoid recursion */ |
| 1722 | qf_inode->i_flags |= S_NOQUOTA; |
| 1723 | err = dquot_enable(qf_inode, type, format_id, flags); |
| 1724 | iput(qf_inode); |
| 1725 | return err; |
| 1726 | } |
| 1727 | |
| 1728 | static int f2fs_enable_quotas(struct super_block *sb) |
| 1729 | { |
| 1730 | int type, err = 0; |
| 1731 | unsigned long qf_inum; |
| 1732 | bool quota_mopt[MAXQUOTAS] = { |
| 1733 | test_opt(F2FS_SB(sb), USRQUOTA), |
| 1734 | test_opt(F2FS_SB(sb), GRPQUOTA), |
| 1735 | test_opt(F2FS_SB(sb), PRJQUOTA), |
| 1736 | }; |
| 1737 | |
| 1738 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY; |
| 1739 | for (type = 0; type < MAXQUOTAS; type++) { |
| 1740 | qf_inum = f2fs_qf_ino(sb, type); |
| 1741 | if (qf_inum) { |
| 1742 | err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, |
| 1743 | DQUOT_USAGE_ENABLED | |
| 1744 | (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); |
| 1745 | if (err) { |
| 1746 | f2fs_msg(sb, KERN_ERR, |
| 1747 | "Failed to enable quota tracking " |
| 1748 | "(type=%d, err=%d). Please run " |
| 1749 | "fsck to fix.", type, err); |
| 1750 | for (type--; type >= 0; type--) |
| 1751 | dquot_quota_off(sb, type); |
| 1752 | return err; |
| 1753 | } |
| 1754 | } |
| 1755 | } |
| 1756 | return 0; |
| 1757 | } |
| 1758 | |
| 1759 | static int f2fs_quota_sync(struct super_block *sb, int type) |
| 1760 | { |
| 1761 | struct quota_info *dqopt = sb_dqopt(sb); |
| 1762 | int cnt; |
| 1763 | int ret; |
| 1764 | |
| 1765 | ret = dquot_writeback_dquots(sb, type); |
| 1766 | if (ret) |
| 1767 | return ret; |
| 1768 | |
| 1769 | /* |
| 1770 | * Now when everything is written we can discard the pagecache so |
| 1771 | * that userspace sees the changes. |
| 1772 | */ |
| 1773 | for (cnt = 0; cnt < MAXQUOTAS; cnt++) { |
| 1774 | if (type != -1 && cnt != type) |
| 1775 | continue; |
| 1776 | if (!sb_has_quota_active(sb, cnt)) |
| 1777 | continue; |
| 1778 | |
| 1779 | ret = filemap_write_and_wait(dqopt->files[cnt]->i_mapping); |
| 1780 | if (ret) |
| 1781 | return ret; |
| 1782 | |
| 1783 | inode_lock(dqopt->files[cnt]); |
| 1784 | truncate_inode_pages(&dqopt->files[cnt]->i_data, 0); |
| 1785 | inode_unlock(dqopt->files[cnt]); |
| 1786 | } |
| 1787 | return 0; |
| 1788 | } |
| 1789 | |
| 1790 | static int f2fs_quota_on(struct super_block *sb, int type, int format_id, |
| 1791 | const struct path *path) |
| 1792 | { |
| 1793 | struct inode *inode; |
| 1794 | int err; |
| 1795 | |
| 1796 | err = f2fs_quota_sync(sb, type); |
| 1797 | if (err) |
| 1798 | return err; |
| 1799 | |
| 1800 | err = dquot_quota_on(sb, type, format_id, path); |
| 1801 | if (err) |
| 1802 | return err; |
| 1803 | |
| 1804 | inode = d_inode(path->dentry); |
| 1805 | |
| 1806 | inode_lock(inode); |
| 1807 | F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL; |
| 1808 | inode_set_flags(inode, S_NOATIME | S_IMMUTABLE, |
| 1809 | S_NOATIME | S_IMMUTABLE); |
| 1810 | inode_unlock(inode); |
| 1811 | f2fs_mark_inode_dirty_sync(inode, false); |
| 1812 | |
| 1813 | return 0; |
| 1814 | } |
| 1815 | |
| 1816 | static int f2fs_quota_off(struct super_block *sb, int type) |
| 1817 | { |
| 1818 | struct inode *inode = sb_dqopt(sb)->files[type]; |
| 1819 | int err; |
| 1820 | |
| 1821 | if (!inode || !igrab(inode)) |
| 1822 | return dquot_quota_off(sb, type); |
| 1823 | |
| 1824 | f2fs_quota_sync(sb, type); |
| 1825 | |
| 1826 | err = dquot_quota_off(sb, type); |
| 1827 | if (err || f2fs_sb_has_quota_ino(sb)) |
| 1828 | goto out_put; |
| 1829 | |
| 1830 | inode_lock(inode); |
| 1831 | F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL); |
| 1832 | inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE); |
| 1833 | inode_unlock(inode); |
| 1834 | f2fs_mark_inode_dirty_sync(inode, false); |
| 1835 | out_put: |
| 1836 | iput(inode); |
| 1837 | return err; |
| 1838 | } |
| 1839 | |
| 1840 | void f2fs_quota_off_umount(struct super_block *sb) |
| 1841 | { |
| 1842 | int type; |
| 1843 | |
| 1844 | for (type = 0; type < MAXQUOTAS; type++) |
| 1845 | f2fs_quota_off(sb, type); |
| 1846 | } |
| 1847 | |
| 1848 | static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) |
| 1849 | { |
| 1850 | *projid = F2FS_I(inode)->i_projid; |
| 1851 | return 0; |
| 1852 | } |
| 1853 | |
| 1854 | static const struct dquot_operations f2fs_quota_operations = { |
| 1855 | .get_reserved_space = f2fs_get_reserved_space, |
| 1856 | .write_dquot = dquot_commit, |
| 1857 | .acquire_dquot = dquot_acquire, |
| 1858 | .release_dquot = dquot_release, |
| 1859 | .mark_dirty = dquot_mark_dquot_dirty, |
| 1860 | .write_info = dquot_commit_info, |
| 1861 | .alloc_dquot = dquot_alloc, |
| 1862 | .destroy_dquot = dquot_destroy, |
| 1863 | .get_projid = f2fs_get_projid, |
| 1864 | .get_next_id = dquot_get_next_id, |
| 1865 | }; |
| 1866 | |
| 1867 | static const struct quotactl_ops f2fs_quotactl_ops = { |
| 1868 | .quota_on = f2fs_quota_on, |
| 1869 | .quota_off = f2fs_quota_off, |
| 1870 | .quota_sync = f2fs_quota_sync, |
| 1871 | .get_state = dquot_get_state, |
| 1872 | .set_info = dquot_set_dqinfo, |
| 1873 | .get_dqblk = dquot_get_dqblk, |
| 1874 | .set_dqblk = dquot_set_dqblk, |
| 1875 | .get_nextdqblk = dquot_get_next_dqblk, |
| 1876 | }; |
| 1877 | #else |
| 1878 | void f2fs_quota_off_umount(struct super_block *sb) |
| 1879 | { |
| 1880 | } |
| 1881 | #endif |
| 1882 | |
| 1883 | static const struct super_operations f2fs_sops = { |
| 1884 | .alloc_inode = f2fs_alloc_inode, |
| 1885 | .drop_inode = f2fs_drop_inode, |
| 1886 | .destroy_inode = f2fs_destroy_inode, |
| 1887 | .write_inode = f2fs_write_inode, |
| 1888 | .dirty_inode = f2fs_dirty_inode, |
| 1889 | .show_options = f2fs_show_options, |
| 1890 | #ifdef CONFIG_QUOTA |
| 1891 | .quota_read = f2fs_quota_read, |
| 1892 | .quota_write = f2fs_quota_write, |
| 1893 | .get_dquots = f2fs_get_dquots, |
| 1894 | #endif |
| 1895 | .evict_inode = f2fs_evict_inode, |
| 1896 | .put_super = f2fs_put_super, |
| 1897 | .sync_fs = f2fs_sync_fs, |
| 1898 | .freeze_fs = f2fs_freeze, |
| 1899 | .unfreeze_fs = f2fs_unfreeze, |
| 1900 | .statfs = f2fs_statfs, |
| 1901 | .remount_fs = f2fs_remount, |
| 1902 | }; |
| 1903 | |
| 1904 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 1905 | static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) |
| 1906 | { |
| 1907 | return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, |
| 1908 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, |
| 1909 | ctx, len, NULL); |
| 1910 | } |
| 1911 | |
| 1912 | static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, |
| 1913 | void *fs_data) |
| 1914 | { |
| 1915 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1916 | |
| 1917 | /* |
| 1918 | * Encrypting the root directory is not allowed because fsck |
| 1919 | * expects lost+found directory to exist and remain unencrypted |
| 1920 | * if LOST_FOUND feature is enabled. |
| 1921 | * |
| 1922 | */ |
| 1923 | if (f2fs_sb_has_lost_found(sbi->sb) && |
| 1924 | inode->i_ino == F2FS_ROOT_INO(sbi)) |
| 1925 | return -EPERM; |
| 1926 | |
| 1927 | return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, |
| 1928 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, |
| 1929 | ctx, len, fs_data, XATTR_CREATE); |
| 1930 | } |
| 1931 | |
| 1932 | static bool f2fs_dummy_context(struct inode *inode) |
| 1933 | { |
| 1934 | return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode)); |
| 1935 | } |
| 1936 | |
| 1937 | static unsigned f2fs_max_namelen(struct inode *inode) |
| 1938 | { |
| 1939 | return S_ISLNK(inode->i_mode) ? |
| 1940 | inode->i_sb->s_blocksize : F2FS_NAME_LEN; |
| 1941 | } |
| 1942 | |
| 1943 | static const struct fscrypt_operations f2fs_cryptops = { |
| 1944 | .key_prefix = "f2fs:", |
| 1945 | .get_context = f2fs_get_context, |
| 1946 | .set_context = f2fs_set_context, |
| 1947 | .dummy_context = f2fs_dummy_context, |
| 1948 | .empty_dir = f2fs_empty_dir, |
| 1949 | .max_namelen = f2fs_max_namelen, |
| 1950 | }; |
| 1951 | #endif |
| 1952 | |
| 1953 | static struct inode *f2fs_nfs_get_inode(struct super_block *sb, |
| 1954 | u64 ino, u32 generation) |
| 1955 | { |
| 1956 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 1957 | struct inode *inode; |
| 1958 | |
| 1959 | if (check_nid_range(sbi, ino)) |
| 1960 | return ERR_PTR(-ESTALE); |
| 1961 | |
| 1962 | /* |
| 1963 | * f2fs_iget isn't quite right if the inode is currently unallocated! |
| 1964 | * However f2fs_iget currently does appropriate checks to handle stale |
| 1965 | * inodes so everything is OK. |
| 1966 | */ |
| 1967 | inode = f2fs_iget(sb, ino); |
| 1968 | if (IS_ERR(inode)) |
| 1969 | return ERR_CAST(inode); |
| 1970 | if (unlikely(generation && inode->i_generation != generation)) { |
| 1971 | /* we didn't find the right inode.. */ |
| 1972 | iput(inode); |
| 1973 | return ERR_PTR(-ESTALE); |
| 1974 | } |
| 1975 | return inode; |
| 1976 | } |
| 1977 | |
| 1978 | static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, |
| 1979 | int fh_len, int fh_type) |
| 1980 | { |
| 1981 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, |
| 1982 | f2fs_nfs_get_inode); |
| 1983 | } |
| 1984 | |
| 1985 | static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, |
| 1986 | int fh_len, int fh_type) |
| 1987 | { |
| 1988 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, |
| 1989 | f2fs_nfs_get_inode); |
| 1990 | } |
| 1991 | |
| 1992 | static const struct export_operations f2fs_export_ops = { |
| 1993 | .fh_to_dentry = f2fs_fh_to_dentry, |
| 1994 | .fh_to_parent = f2fs_fh_to_parent, |
| 1995 | .get_parent = f2fs_get_parent, |
| 1996 | }; |
| 1997 | |
| 1998 | static loff_t max_file_blocks(void) |
| 1999 | { |
| 2000 | loff_t result = 0; |
| 2001 | loff_t leaf_count = ADDRS_PER_BLOCK; |
| 2002 | |
| 2003 | /* |
| 2004 | * note: previously, result is equal to (DEF_ADDRS_PER_INODE - |
| 2005 | * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more |
| 2006 | * space in inode.i_addr, it will be more safe to reassign |
| 2007 | * result as zero. |
| 2008 | */ |
| 2009 | |
| 2010 | /* two direct node blocks */ |
| 2011 | result += (leaf_count * 2); |
| 2012 | |
| 2013 | /* two indirect node blocks */ |
| 2014 | leaf_count *= NIDS_PER_BLOCK; |
| 2015 | result += (leaf_count * 2); |
| 2016 | |
| 2017 | /* one double indirect node block */ |
| 2018 | leaf_count *= NIDS_PER_BLOCK; |
| 2019 | result += leaf_count; |
| 2020 | |
| 2021 | return result; |
| 2022 | } |
| 2023 | |
| 2024 | static int __f2fs_commit_super(struct buffer_head *bh, |
| 2025 | struct f2fs_super_block *super) |
| 2026 | { |
| 2027 | lock_buffer(bh); |
| 2028 | if (super) |
| 2029 | memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); |
| 2030 | set_buffer_dirty(bh); |
| 2031 | unlock_buffer(bh); |
| 2032 | |
| 2033 | /* it's rare case, we can do fua all the time */ |
| 2034 | return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); |
| 2035 | } |
| 2036 | |
| 2037 | static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, |
| 2038 | struct buffer_head *bh) |
| 2039 | { |
| 2040 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
| 2041 | (bh->b_data + F2FS_SUPER_OFFSET); |
| 2042 | struct super_block *sb = sbi->sb; |
| 2043 | u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
| 2044 | u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); |
| 2045 | u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); |
| 2046 | u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); |
| 2047 | u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); |
| 2048 | u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); |
| 2049 | u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); |
| 2050 | u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); |
| 2051 | u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); |
| 2052 | u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); |
| 2053 | u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); |
| 2054 | u32 segment_count = le32_to_cpu(raw_super->segment_count); |
| 2055 | u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); |
| 2056 | u64 main_end_blkaddr = main_blkaddr + |
| 2057 | (segment_count_main << log_blocks_per_seg); |
| 2058 | u64 seg_end_blkaddr = segment0_blkaddr + |
| 2059 | (segment_count << log_blocks_per_seg); |
| 2060 | |
| 2061 | if (segment0_blkaddr != cp_blkaddr) { |
| 2062 | f2fs_msg(sb, KERN_INFO, |
| 2063 | "Mismatch start address, segment0(%u) cp_blkaddr(%u)", |
| 2064 | segment0_blkaddr, cp_blkaddr); |
| 2065 | return true; |
| 2066 | } |
| 2067 | |
| 2068 | if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != |
| 2069 | sit_blkaddr) { |
| 2070 | f2fs_msg(sb, KERN_INFO, |
| 2071 | "Wrong CP boundary, start(%u) end(%u) blocks(%u)", |
| 2072 | cp_blkaddr, sit_blkaddr, |
| 2073 | segment_count_ckpt << log_blocks_per_seg); |
| 2074 | return true; |
| 2075 | } |
| 2076 | |
| 2077 | if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != |
| 2078 | nat_blkaddr) { |
| 2079 | f2fs_msg(sb, KERN_INFO, |
| 2080 | "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", |
| 2081 | sit_blkaddr, nat_blkaddr, |
| 2082 | segment_count_sit << log_blocks_per_seg); |
| 2083 | return true; |
| 2084 | } |
| 2085 | |
| 2086 | if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != |
| 2087 | ssa_blkaddr) { |
| 2088 | f2fs_msg(sb, KERN_INFO, |
| 2089 | "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", |
| 2090 | nat_blkaddr, ssa_blkaddr, |
| 2091 | segment_count_nat << log_blocks_per_seg); |
| 2092 | return true; |
| 2093 | } |
| 2094 | |
| 2095 | if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != |
| 2096 | main_blkaddr) { |
| 2097 | f2fs_msg(sb, KERN_INFO, |
| 2098 | "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", |
| 2099 | ssa_blkaddr, main_blkaddr, |
| 2100 | segment_count_ssa << log_blocks_per_seg); |
| 2101 | return true; |
| 2102 | } |
| 2103 | |
| 2104 | if (main_end_blkaddr > seg_end_blkaddr) { |
| 2105 | f2fs_msg(sb, KERN_INFO, |
| 2106 | "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)", |
| 2107 | main_blkaddr, |
| 2108 | segment0_blkaddr + |
| 2109 | (segment_count << log_blocks_per_seg), |
| 2110 | segment_count_main << log_blocks_per_seg); |
| 2111 | return true; |
| 2112 | } else if (main_end_blkaddr < seg_end_blkaddr) { |
| 2113 | int err = 0; |
| 2114 | char *res; |
| 2115 | |
| 2116 | /* fix in-memory information all the time */ |
| 2117 | raw_super->segment_count = cpu_to_le32((main_end_blkaddr - |
| 2118 | segment0_blkaddr) >> log_blocks_per_seg); |
| 2119 | |
| 2120 | if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { |
| 2121 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); |
| 2122 | res = "internally"; |
| 2123 | } else { |
| 2124 | err = __f2fs_commit_super(bh, NULL); |
| 2125 | res = err ? "failed" : "done"; |
| 2126 | } |
| 2127 | f2fs_msg(sb, KERN_INFO, |
| 2128 | "Fix alignment : %s, start(%u) end(%u) block(%u)", |
| 2129 | res, main_blkaddr, |
| 2130 | segment0_blkaddr + |
| 2131 | (segment_count << log_blocks_per_seg), |
| 2132 | segment_count_main << log_blocks_per_seg); |
| 2133 | if (err) |
| 2134 | return true; |
| 2135 | } |
| 2136 | return false; |
| 2137 | } |
| 2138 | |
| 2139 | static int sanity_check_raw_super(struct f2fs_sb_info *sbi, |
| 2140 | struct buffer_head *bh) |
| 2141 | { |
| 2142 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
| 2143 | (bh->b_data + F2FS_SUPER_OFFSET); |
| 2144 | struct super_block *sb = sbi->sb; |
| 2145 | unsigned int blocksize; |
| 2146 | |
| 2147 | if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) { |
| 2148 | f2fs_msg(sb, KERN_INFO, |
| 2149 | "Magic Mismatch, valid(0x%x) - read(0x%x)", |
| 2150 | F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); |
| 2151 | return 1; |
| 2152 | } |
| 2153 | |
| 2154 | /* Currently, support only 4KB page cache size */ |
| 2155 | if (F2FS_BLKSIZE != PAGE_SIZE) { |
| 2156 | f2fs_msg(sb, KERN_INFO, |
| 2157 | "Invalid page_cache_size (%lu), supports only 4KB\n", |
| 2158 | PAGE_SIZE); |
| 2159 | return 1; |
| 2160 | } |
| 2161 | |
| 2162 | /* Currently, support only 4KB block size */ |
| 2163 | blocksize = 1 << le32_to_cpu(raw_super->log_blocksize); |
| 2164 | if (blocksize != F2FS_BLKSIZE) { |
| 2165 | f2fs_msg(sb, KERN_INFO, |
| 2166 | "Invalid blocksize (%u), supports only 4KB\n", |
| 2167 | blocksize); |
| 2168 | return 1; |
| 2169 | } |
| 2170 | |
| 2171 | /* check log blocks per segment */ |
| 2172 | if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { |
| 2173 | f2fs_msg(sb, KERN_INFO, |
| 2174 | "Invalid log blocks per segment (%u)\n", |
| 2175 | le32_to_cpu(raw_super->log_blocks_per_seg)); |
| 2176 | return 1; |
| 2177 | } |
| 2178 | |
| 2179 | /* Currently, support 512/1024/2048/4096 bytes sector size */ |
| 2180 | if (le32_to_cpu(raw_super->log_sectorsize) > |
| 2181 | F2FS_MAX_LOG_SECTOR_SIZE || |
| 2182 | le32_to_cpu(raw_super->log_sectorsize) < |
| 2183 | F2FS_MIN_LOG_SECTOR_SIZE) { |
| 2184 | f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", |
| 2185 | le32_to_cpu(raw_super->log_sectorsize)); |
| 2186 | return 1; |
| 2187 | } |
| 2188 | if (le32_to_cpu(raw_super->log_sectors_per_block) + |
| 2189 | le32_to_cpu(raw_super->log_sectorsize) != |
| 2190 | F2FS_MAX_LOG_SECTOR_SIZE) { |
| 2191 | f2fs_msg(sb, KERN_INFO, |
| 2192 | "Invalid log sectors per block(%u) log sectorsize(%u)", |
| 2193 | le32_to_cpu(raw_super->log_sectors_per_block), |
| 2194 | le32_to_cpu(raw_super->log_sectorsize)); |
| 2195 | return 1; |
| 2196 | } |
| 2197 | |
| 2198 | /* check reserved ino info */ |
| 2199 | if (le32_to_cpu(raw_super->node_ino) != 1 || |
| 2200 | le32_to_cpu(raw_super->meta_ino) != 2 || |
| 2201 | le32_to_cpu(raw_super->root_ino) != 3) { |
| 2202 | f2fs_msg(sb, KERN_INFO, |
| 2203 | "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", |
| 2204 | le32_to_cpu(raw_super->node_ino), |
| 2205 | le32_to_cpu(raw_super->meta_ino), |
| 2206 | le32_to_cpu(raw_super->root_ino)); |
| 2207 | return 1; |
| 2208 | } |
| 2209 | |
| 2210 | if (le32_to_cpu(raw_super->segment_count) > F2FS_MAX_SEGMENT) { |
| 2211 | f2fs_msg(sb, KERN_INFO, |
| 2212 | "Invalid segment count (%u)", |
| 2213 | le32_to_cpu(raw_super->segment_count)); |
| 2214 | return 1; |
| 2215 | } |
| 2216 | |
| 2217 | /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ |
| 2218 | if (sanity_check_area_boundary(sbi, bh)) |
| 2219 | return 1; |
| 2220 | |
| 2221 | return 0; |
| 2222 | } |
| 2223 | |
| 2224 | int sanity_check_ckpt(struct f2fs_sb_info *sbi) |
| 2225 | { |
| 2226 | unsigned int total, fsmeta; |
| 2227 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
| 2228 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 2229 | unsigned int ovp_segments, reserved_segments; |
| 2230 | unsigned int main_segs, blocks_per_seg; |
| 2231 | int i; |
| 2232 | |
| 2233 | total = le32_to_cpu(raw_super->segment_count); |
| 2234 | fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); |
| 2235 | fsmeta += le32_to_cpu(raw_super->segment_count_sit); |
| 2236 | fsmeta += le32_to_cpu(raw_super->segment_count_nat); |
| 2237 | fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); |
| 2238 | fsmeta += le32_to_cpu(raw_super->segment_count_ssa); |
| 2239 | |
| 2240 | if (unlikely(fsmeta >= total)) |
| 2241 | return 1; |
| 2242 | |
| 2243 | ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); |
| 2244 | reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); |
| 2245 | |
| 2246 | if (unlikely(fsmeta < F2FS_MIN_SEGMENTS || |
| 2247 | ovp_segments == 0 || reserved_segments == 0)) { |
| 2248 | f2fs_msg(sbi->sb, KERN_ERR, |
| 2249 | "Wrong layout: check mkfs.f2fs version"); |
| 2250 | return 1; |
| 2251 | } |
| 2252 | |
| 2253 | main_segs = le32_to_cpu(raw_super->segment_count_main); |
| 2254 | blocks_per_seg = sbi->blocks_per_seg; |
| 2255 | |
| 2256 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
| 2257 | if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || |
| 2258 | le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) |
| 2259 | return 1; |
| 2260 | } |
| 2261 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
| 2262 | if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || |
| 2263 | le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) |
| 2264 | return 1; |
| 2265 | } |
| 2266 | |
| 2267 | if (unlikely(f2fs_cp_error(sbi))) { |
| 2268 | f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); |
| 2269 | return 1; |
| 2270 | } |
| 2271 | return 0; |
| 2272 | } |
| 2273 | |
| 2274 | static void init_sb_info(struct f2fs_sb_info *sbi) |
| 2275 | { |
| 2276 | struct f2fs_super_block *raw_super = sbi->raw_super; |
| 2277 | int i, j; |
| 2278 | |
| 2279 | sbi->log_sectors_per_block = |
| 2280 | le32_to_cpu(raw_super->log_sectors_per_block); |
| 2281 | sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); |
| 2282 | sbi->blocksize = 1 << sbi->log_blocksize; |
| 2283 | sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); |
| 2284 | sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; |
| 2285 | sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); |
| 2286 | sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); |
| 2287 | sbi->total_sections = le32_to_cpu(raw_super->section_count); |
| 2288 | sbi->total_node_count = |
| 2289 | (le32_to_cpu(raw_super->segment_count_nat) / 2) |
| 2290 | * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; |
| 2291 | sbi->root_ino_num = le32_to_cpu(raw_super->root_ino); |
| 2292 | sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); |
| 2293 | sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); |
| 2294 | sbi->cur_victim_sec = NULL_SECNO; |
| 2295 | sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; |
| 2296 | |
| 2297 | sbi->dir_level = DEF_DIR_LEVEL; |
| 2298 | sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; |
| 2299 | sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; |
| 2300 | clear_sbi_flag(sbi, SBI_NEED_FSCK); |
| 2301 | |
| 2302 | for (i = 0; i < NR_COUNT_TYPE; i++) |
| 2303 | atomic_set(&sbi->nr_pages[i], 0); |
| 2304 | |
| 2305 | atomic_set(&sbi->wb_sync_req, 0); |
| 2306 | |
| 2307 | INIT_LIST_HEAD(&sbi->s_list); |
| 2308 | mutex_init(&sbi->umount_mutex); |
| 2309 | for (i = 0; i < NR_PAGE_TYPE - 1; i++) |
| 2310 | for (j = HOT; j < NR_TEMP_TYPE; j++) |
| 2311 | mutex_init(&sbi->wio_mutex[i][j]); |
| 2312 | spin_lock_init(&sbi->cp_lock); |
| 2313 | |
| 2314 | sbi->dirty_device = 0; |
| 2315 | spin_lock_init(&sbi->dev_lock); |
| 2316 | |
| 2317 | init_rwsem(&sbi->sb_lock); |
| 2318 | } |
| 2319 | |
| 2320 | static int init_percpu_info(struct f2fs_sb_info *sbi) |
| 2321 | { |
| 2322 | int err; |
| 2323 | |
| 2324 | err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); |
| 2325 | if (err) |
| 2326 | return err; |
| 2327 | |
| 2328 | return percpu_counter_init(&sbi->total_valid_inode_count, 0, |
| 2329 | GFP_KERNEL); |
| 2330 | } |
| 2331 | |
| 2332 | #ifdef CONFIG_BLK_DEV_ZONED |
| 2333 | static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) |
| 2334 | { |
| 2335 | struct block_device *bdev = FDEV(devi).bdev; |
| 2336 | sector_t nr_sectors = bdev->bd_part->nr_sects; |
| 2337 | sector_t sector = 0; |
| 2338 | struct blk_zone *zones; |
| 2339 | unsigned int i, nr_zones; |
| 2340 | unsigned int n = 0; |
| 2341 | int err = -EIO; |
| 2342 | |
| 2343 | if (!f2fs_sb_has_blkzoned(sbi->sb)) |
| 2344 | return 0; |
| 2345 | |
| 2346 | if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != |
| 2347 | SECTOR_TO_BLOCK(bdev_zone_sectors(bdev))) |
| 2348 | return -EINVAL; |
| 2349 | sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)); |
| 2350 | if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz != |
| 2351 | __ilog2_u32(sbi->blocks_per_blkz)) |
| 2352 | return -EINVAL; |
| 2353 | sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz); |
| 2354 | FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >> |
| 2355 | sbi->log_blocks_per_blkz; |
| 2356 | if (nr_sectors & (bdev_zone_sectors(bdev) - 1)) |
| 2357 | FDEV(devi).nr_blkz++; |
| 2358 | |
| 2359 | FDEV(devi).blkz_type = f2fs_kmalloc(sbi, FDEV(devi).nr_blkz, |
| 2360 | GFP_KERNEL); |
| 2361 | if (!FDEV(devi).blkz_type) |
| 2362 | return -ENOMEM; |
| 2363 | |
| 2364 | #define F2FS_REPORT_NR_ZONES 4096 |
| 2365 | |
| 2366 | zones = f2fs_kzalloc(sbi, sizeof(struct blk_zone) * |
| 2367 | F2FS_REPORT_NR_ZONES, GFP_KERNEL); |
| 2368 | if (!zones) |
| 2369 | return -ENOMEM; |
| 2370 | |
| 2371 | /* Get block zones type */ |
| 2372 | while (zones && sector < nr_sectors) { |
| 2373 | |
| 2374 | nr_zones = F2FS_REPORT_NR_ZONES; |
| 2375 | err = blkdev_report_zones(bdev, sector, |
| 2376 | zones, &nr_zones, |
| 2377 | GFP_KERNEL); |
| 2378 | if (err) |
| 2379 | break; |
| 2380 | if (!nr_zones) { |
| 2381 | err = -EIO; |
| 2382 | break; |
| 2383 | } |
| 2384 | |
| 2385 | for (i = 0; i < nr_zones; i++) { |
| 2386 | FDEV(devi).blkz_type[n] = zones[i].type; |
| 2387 | sector += zones[i].len; |
| 2388 | n++; |
| 2389 | } |
| 2390 | } |
| 2391 | |
| 2392 | kfree(zones); |
| 2393 | |
| 2394 | return err; |
| 2395 | } |
| 2396 | #endif |
| 2397 | |
| 2398 | /* |
| 2399 | * Read f2fs raw super block. |
| 2400 | * Because we have two copies of super block, so read both of them |
| 2401 | * to get the first valid one. If any one of them is broken, we pass |
| 2402 | * them recovery flag back to the caller. |
| 2403 | */ |
| 2404 | static int read_raw_super_block(struct f2fs_sb_info *sbi, |
| 2405 | struct f2fs_super_block **raw_super, |
| 2406 | int *valid_super_block, int *recovery) |
| 2407 | { |
| 2408 | struct super_block *sb = sbi->sb; |
| 2409 | int block; |
| 2410 | struct buffer_head *bh; |
| 2411 | struct f2fs_super_block *super; |
| 2412 | int err = 0; |
| 2413 | |
| 2414 | super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); |
| 2415 | if (!super) |
| 2416 | return -ENOMEM; |
| 2417 | |
| 2418 | for (block = 0; block < 2; block++) { |
| 2419 | bh = sb_bread(sb, block); |
| 2420 | if (!bh) { |
| 2421 | f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock", |
| 2422 | block + 1); |
| 2423 | err = -EIO; |
| 2424 | continue; |
| 2425 | } |
| 2426 | |
| 2427 | /* sanity checking of raw super */ |
| 2428 | if (sanity_check_raw_super(sbi, bh)) { |
| 2429 | f2fs_msg(sb, KERN_ERR, |
| 2430 | "Can't find valid F2FS filesystem in %dth superblock", |
| 2431 | block + 1); |
| 2432 | err = -EINVAL; |
| 2433 | brelse(bh); |
| 2434 | continue; |
| 2435 | } |
| 2436 | |
| 2437 | if (!*raw_super) { |
| 2438 | memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, |
| 2439 | sizeof(*super)); |
| 2440 | *valid_super_block = block; |
| 2441 | *raw_super = super; |
| 2442 | } |
| 2443 | brelse(bh); |
| 2444 | } |
| 2445 | |
| 2446 | /* Fail to read any one of the superblocks*/ |
| 2447 | if (err < 0) |
| 2448 | *recovery = 1; |
| 2449 | |
| 2450 | /* No valid superblock */ |
| 2451 | if (!*raw_super) |
| 2452 | kfree(super); |
| 2453 | else |
| 2454 | err = 0; |
| 2455 | |
| 2456 | return err; |
| 2457 | } |
| 2458 | |
| 2459 | int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) |
| 2460 | { |
| 2461 | struct buffer_head *bh; |
| 2462 | int err; |
| 2463 | |
| 2464 | if ((recover && f2fs_readonly(sbi->sb)) || |
| 2465 | bdev_read_only(sbi->sb->s_bdev)) { |
| 2466 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); |
| 2467 | return -EROFS; |
| 2468 | } |
| 2469 | |
| 2470 | /* write back-up superblock first */ |
| 2471 | bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); |
| 2472 | if (!bh) |
| 2473 | return -EIO; |
| 2474 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); |
| 2475 | brelse(bh); |
| 2476 | |
| 2477 | /* if we are in recovery path, skip writing valid superblock */ |
| 2478 | if (recover || err) |
| 2479 | return err; |
| 2480 | |
| 2481 | /* write current valid superblock */ |
| 2482 | bh = sb_bread(sbi->sb, sbi->valid_super_block); |
| 2483 | if (!bh) |
| 2484 | return -EIO; |
| 2485 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); |
| 2486 | brelse(bh); |
| 2487 | return err; |
| 2488 | } |
| 2489 | |
| 2490 | static int f2fs_scan_devices(struct f2fs_sb_info *sbi) |
| 2491 | { |
| 2492 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
| 2493 | unsigned int max_devices = MAX_DEVICES; |
| 2494 | int i; |
| 2495 | |
| 2496 | /* Initialize single device information */ |
| 2497 | if (!RDEV(0).path[0]) { |
| 2498 | if (!bdev_is_zoned(sbi->sb->s_bdev)) |
| 2499 | return 0; |
| 2500 | max_devices = 1; |
| 2501 | } |
| 2502 | |
| 2503 | /* |
| 2504 | * Initialize multiple devices information, or single |
| 2505 | * zoned block device information. |
| 2506 | */ |
| 2507 | sbi->devs = f2fs_kzalloc(sbi, sizeof(struct f2fs_dev_info) * |
| 2508 | max_devices, GFP_KERNEL); |
| 2509 | if (!sbi->devs) |
| 2510 | return -ENOMEM; |
| 2511 | |
| 2512 | for (i = 0; i < max_devices; i++) { |
| 2513 | |
| 2514 | if (i > 0 && !RDEV(i).path[0]) |
| 2515 | break; |
| 2516 | |
| 2517 | if (max_devices == 1) { |
| 2518 | /* Single zoned block device mount */ |
| 2519 | FDEV(0).bdev = |
| 2520 | blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, |
| 2521 | sbi->sb->s_mode, sbi->sb->s_type); |
| 2522 | } else { |
| 2523 | /* Multi-device mount */ |
| 2524 | memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); |
| 2525 | FDEV(i).total_segments = |
| 2526 | le32_to_cpu(RDEV(i).total_segments); |
| 2527 | if (i == 0) { |
| 2528 | FDEV(i).start_blk = 0; |
| 2529 | FDEV(i).end_blk = FDEV(i).start_blk + |
| 2530 | (FDEV(i).total_segments << |
| 2531 | sbi->log_blocks_per_seg) - 1 + |
| 2532 | le32_to_cpu(raw_super->segment0_blkaddr); |
| 2533 | } else { |
| 2534 | FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; |
| 2535 | FDEV(i).end_blk = FDEV(i).start_blk + |
| 2536 | (FDEV(i).total_segments << |
| 2537 | sbi->log_blocks_per_seg) - 1; |
| 2538 | } |
| 2539 | FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, |
| 2540 | sbi->sb->s_mode, sbi->sb->s_type); |
| 2541 | } |
| 2542 | if (IS_ERR(FDEV(i).bdev)) |
| 2543 | return PTR_ERR(FDEV(i).bdev); |
| 2544 | |
| 2545 | /* to release errored devices */ |
| 2546 | sbi->s_ndevs = i + 1; |
| 2547 | |
| 2548 | #ifdef CONFIG_BLK_DEV_ZONED |
| 2549 | if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && |
| 2550 | !f2fs_sb_has_blkzoned(sbi->sb)) { |
| 2551 | f2fs_msg(sbi->sb, KERN_ERR, |
| 2552 | "Zoned block device feature not enabled\n"); |
| 2553 | return -EINVAL; |
| 2554 | } |
| 2555 | if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { |
| 2556 | if (init_blkz_info(sbi, i)) { |
| 2557 | f2fs_msg(sbi->sb, KERN_ERR, |
| 2558 | "Failed to initialize F2FS blkzone information"); |
| 2559 | return -EINVAL; |
| 2560 | } |
| 2561 | if (max_devices == 1) |
| 2562 | break; |
| 2563 | f2fs_msg(sbi->sb, KERN_INFO, |
| 2564 | "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", |
| 2565 | i, FDEV(i).path, |
| 2566 | FDEV(i).total_segments, |
| 2567 | FDEV(i).start_blk, FDEV(i).end_blk, |
| 2568 | bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? |
| 2569 | "Host-aware" : "Host-managed"); |
| 2570 | continue; |
| 2571 | } |
| 2572 | #endif |
| 2573 | f2fs_msg(sbi->sb, KERN_INFO, |
| 2574 | "Mount Device [%2d]: %20s, %8u, %8x - %8x", |
| 2575 | i, FDEV(i).path, |
| 2576 | FDEV(i).total_segments, |
| 2577 | FDEV(i).start_blk, FDEV(i).end_blk); |
| 2578 | } |
| 2579 | f2fs_msg(sbi->sb, KERN_INFO, |
| 2580 | "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi)); |
| 2581 | return 0; |
| 2582 | } |
| 2583 | |
| 2584 | static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) |
| 2585 | { |
| 2586 | struct f2fs_sm_info *sm_i = SM_I(sbi); |
| 2587 | |
| 2588 | /* adjust parameters according to the volume size */ |
| 2589 | if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) { |
| 2590 | F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; |
| 2591 | sm_i->dcc_info->discard_granularity = 1; |
| 2592 | sm_i->ipu_policy = 1 << F2FS_IPU_FORCE; |
| 2593 | } |
| 2594 | } |
| 2595 | |
| 2596 | static int f2fs_fill_super(struct super_block *sb, void *data, int silent) |
| 2597 | { |
| 2598 | struct f2fs_sb_info *sbi; |
| 2599 | struct f2fs_super_block *raw_super; |
| 2600 | struct inode *root; |
| 2601 | int err; |
| 2602 | bool retry = true, need_fsck = false; |
| 2603 | char *options = NULL; |
| 2604 | int recovery, i, valid_super_block; |
| 2605 | struct curseg_info *seg_i; |
| 2606 | |
| 2607 | try_onemore: |
| 2608 | err = -EINVAL; |
| 2609 | raw_super = NULL; |
| 2610 | valid_super_block = -1; |
| 2611 | recovery = 0; |
| 2612 | |
| 2613 | /* allocate memory for f2fs-specific super block info */ |
| 2614 | sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); |
| 2615 | if (!sbi) |
| 2616 | return -ENOMEM; |
| 2617 | |
| 2618 | sbi->sb = sb; |
| 2619 | |
| 2620 | /* Load the checksum driver */ |
| 2621 | sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); |
| 2622 | if (IS_ERR(sbi->s_chksum_driver)) { |
| 2623 | f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver."); |
| 2624 | err = PTR_ERR(sbi->s_chksum_driver); |
| 2625 | sbi->s_chksum_driver = NULL; |
| 2626 | goto free_sbi; |
| 2627 | } |
| 2628 | |
| 2629 | /* set a block size */ |
| 2630 | if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { |
| 2631 | f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); |
| 2632 | goto free_sbi; |
| 2633 | } |
| 2634 | |
| 2635 | err = read_raw_super_block(sbi, &raw_super, &valid_super_block, |
| 2636 | &recovery); |
| 2637 | if (err) |
| 2638 | goto free_sbi; |
| 2639 | |
| 2640 | sb->s_fs_info = sbi; |
| 2641 | sbi->raw_super = raw_super; |
| 2642 | |
| 2643 | F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); |
| 2644 | F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); |
| 2645 | |
| 2646 | /* precompute checksum seed for metadata */ |
| 2647 | if (f2fs_sb_has_inode_chksum(sb)) |
| 2648 | sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, |
| 2649 | sizeof(raw_super->uuid)); |
| 2650 | |
| 2651 | /* |
| 2652 | * The BLKZONED feature indicates that the drive was formatted with |
| 2653 | * zone alignment optimization. This is optional for host-aware |
| 2654 | * devices, but mandatory for host-managed zoned block devices. |
| 2655 | */ |
| 2656 | #ifndef CONFIG_BLK_DEV_ZONED |
| 2657 | if (f2fs_sb_has_blkzoned(sb)) { |
| 2658 | f2fs_msg(sb, KERN_ERR, |
| 2659 | "Zoned block device support is not enabled\n"); |
| 2660 | err = -EOPNOTSUPP; |
| 2661 | goto free_sb_buf; |
| 2662 | } |
| 2663 | #endif |
| 2664 | default_options(sbi); |
| 2665 | /* parse mount options */ |
| 2666 | options = kstrdup((const char *)data, GFP_KERNEL); |
| 2667 | if (data && !options) { |
| 2668 | err = -ENOMEM; |
| 2669 | goto free_sb_buf; |
| 2670 | } |
| 2671 | |
| 2672 | err = parse_options(sb, options); |
| 2673 | if (err) |
| 2674 | goto free_options; |
| 2675 | |
| 2676 | sbi->max_file_blocks = max_file_blocks(); |
| 2677 | sb->s_maxbytes = sbi->max_file_blocks << |
| 2678 | le32_to_cpu(raw_super->log_blocksize); |
| 2679 | sb->s_max_links = F2FS_LINK_MAX; |
| 2680 | get_random_bytes(&sbi->s_next_generation, sizeof(u32)); |
| 2681 | |
| 2682 | #ifdef CONFIG_QUOTA |
| 2683 | sb->dq_op = &f2fs_quota_operations; |
| 2684 | if (f2fs_sb_has_quota_ino(sb)) |
| 2685 | sb->s_qcop = &dquot_quotactl_sysfile_ops; |
| 2686 | else |
| 2687 | sb->s_qcop = &f2fs_quotactl_ops; |
| 2688 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; |
| 2689 | |
| 2690 | if (f2fs_sb_has_quota_ino(sbi->sb)) { |
| 2691 | for (i = 0; i < MAXQUOTAS; i++) { |
| 2692 | if (f2fs_qf_ino(sbi->sb, i)) |
| 2693 | sbi->nquota_files++; |
| 2694 | } |
| 2695 | } |
| 2696 | #endif |
| 2697 | |
| 2698 | sb->s_op = &f2fs_sops; |
| 2699 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 2700 | sb->s_cop = &f2fs_cryptops; |
| 2701 | #endif |
| 2702 | sb->s_xattr = f2fs_xattr_handlers; |
| 2703 | sb->s_export_op = &f2fs_export_ops; |
| 2704 | sb->s_magic = F2FS_SUPER_MAGIC; |
| 2705 | sb->s_time_gran = 1; |
| 2706 | sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | |
| 2707 | (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); |
| 2708 | memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); |
| 2709 | sb->s_iflags |= SB_I_CGROUPWB; |
| 2710 | |
| 2711 | /* init f2fs-specific super block info */ |
| 2712 | sbi->valid_super_block = valid_super_block; |
| 2713 | mutex_init(&sbi->gc_mutex); |
| 2714 | mutex_init(&sbi->cp_mutex); |
| 2715 | init_rwsem(&sbi->node_write); |
| 2716 | init_rwsem(&sbi->node_change); |
| 2717 | |
| 2718 | /* disallow all the data/node/meta page writes */ |
| 2719 | set_sbi_flag(sbi, SBI_POR_DOING); |
| 2720 | spin_lock_init(&sbi->stat_lock); |
| 2721 | |
| 2722 | /* init iostat info */ |
| 2723 | spin_lock_init(&sbi->iostat_lock); |
| 2724 | sbi->iostat_enable = false; |
| 2725 | |
| 2726 | for (i = 0; i < NR_PAGE_TYPE; i++) { |
| 2727 | int n = (i == META) ? 1: NR_TEMP_TYPE; |
| 2728 | int j; |
| 2729 | |
| 2730 | sbi->write_io[i] = f2fs_kmalloc(sbi, |
| 2731 | n * sizeof(struct f2fs_bio_info), |
| 2732 | GFP_KERNEL); |
| 2733 | if (!sbi->write_io[i]) { |
| 2734 | err = -ENOMEM; |
| 2735 | goto free_options; |
| 2736 | } |
| 2737 | |
| 2738 | for (j = HOT; j < n; j++) { |
| 2739 | init_rwsem(&sbi->write_io[i][j].io_rwsem); |
| 2740 | sbi->write_io[i][j].sbi = sbi; |
| 2741 | sbi->write_io[i][j].bio = NULL; |
| 2742 | spin_lock_init(&sbi->write_io[i][j].io_lock); |
| 2743 | INIT_LIST_HEAD(&sbi->write_io[i][j].io_list); |
| 2744 | } |
| 2745 | } |
| 2746 | |
| 2747 | init_rwsem(&sbi->cp_rwsem); |
| 2748 | init_waitqueue_head(&sbi->cp_wait); |
| 2749 | init_sb_info(sbi); |
| 2750 | |
| 2751 | err = init_percpu_info(sbi); |
| 2752 | if (err) |
| 2753 | goto free_bio_info; |
| 2754 | |
| 2755 | if (F2FS_IO_SIZE(sbi) > 1) { |
| 2756 | sbi->write_io_dummy = |
| 2757 | mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); |
| 2758 | if (!sbi->write_io_dummy) { |
| 2759 | err = -ENOMEM; |
| 2760 | goto free_percpu; |
| 2761 | } |
| 2762 | } |
| 2763 | |
| 2764 | /* get an inode for meta space */ |
| 2765 | sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); |
| 2766 | if (IS_ERR(sbi->meta_inode)) { |
| 2767 | f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode"); |
| 2768 | err = PTR_ERR(sbi->meta_inode); |
| 2769 | goto free_io_dummy; |
| 2770 | } |
| 2771 | |
| 2772 | err = get_valid_checkpoint(sbi); |
| 2773 | if (err) { |
| 2774 | f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint"); |
| 2775 | goto free_meta_inode; |
| 2776 | } |
| 2777 | |
| 2778 | /* Initialize device list */ |
| 2779 | err = f2fs_scan_devices(sbi); |
| 2780 | if (err) { |
| 2781 | f2fs_msg(sb, KERN_ERR, "Failed to find devices"); |
| 2782 | goto free_devices; |
| 2783 | } |
| 2784 | |
| 2785 | sbi->total_valid_node_count = |
| 2786 | le32_to_cpu(sbi->ckpt->valid_node_count); |
| 2787 | percpu_counter_set(&sbi->total_valid_inode_count, |
| 2788 | le32_to_cpu(sbi->ckpt->valid_inode_count)); |
| 2789 | sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); |
| 2790 | sbi->total_valid_block_count = |
| 2791 | le64_to_cpu(sbi->ckpt->valid_block_count); |
| 2792 | sbi->last_valid_block_count = sbi->total_valid_block_count; |
| 2793 | sbi->reserved_blocks = 0; |
| 2794 | sbi->current_reserved_blocks = 0; |
| 2795 | limit_reserve_root(sbi); |
| 2796 | |
| 2797 | for (i = 0; i < NR_INODE_TYPE; i++) { |
| 2798 | INIT_LIST_HEAD(&sbi->inode_list[i]); |
| 2799 | spin_lock_init(&sbi->inode_lock[i]); |
| 2800 | } |
| 2801 | |
| 2802 | init_extent_cache_info(sbi); |
| 2803 | |
| 2804 | init_ino_entry_info(sbi); |
| 2805 | |
| 2806 | /* setup f2fs internal modules */ |
| 2807 | err = build_segment_manager(sbi); |
| 2808 | if (err) { |
| 2809 | f2fs_msg(sb, KERN_ERR, |
| 2810 | "Failed to initialize F2FS segment manager"); |
| 2811 | goto free_sm; |
| 2812 | } |
| 2813 | err = build_node_manager(sbi); |
| 2814 | if (err) { |
| 2815 | f2fs_msg(sb, KERN_ERR, |
| 2816 | "Failed to initialize F2FS node manager"); |
| 2817 | goto free_nm; |
| 2818 | } |
| 2819 | |
| 2820 | /* For write statistics */ |
| 2821 | if (sb->s_bdev->bd_part) |
| 2822 | sbi->sectors_written_start = |
| 2823 | (u64)part_stat_read(sb->s_bdev->bd_part, sectors[1]); |
| 2824 | |
| 2825 | /* Read accumulated write IO statistics if exists */ |
| 2826 | seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); |
| 2827 | if (__exist_node_summaries(sbi)) |
| 2828 | sbi->kbytes_written = |
| 2829 | le64_to_cpu(seg_i->journal->info.kbytes_written); |
| 2830 | |
| 2831 | build_gc_manager(sbi); |
| 2832 | |
| 2833 | /* get an inode for node space */ |
| 2834 | sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); |
| 2835 | if (IS_ERR(sbi->node_inode)) { |
| 2836 | f2fs_msg(sb, KERN_ERR, "Failed to read node inode"); |
| 2837 | err = PTR_ERR(sbi->node_inode); |
| 2838 | goto free_nm; |
| 2839 | } |
| 2840 | |
| 2841 | err = f2fs_build_stats(sbi); |
| 2842 | if (err) |
| 2843 | goto free_node_inode; |
| 2844 | |
| 2845 | /* read root inode and dentry */ |
| 2846 | root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); |
| 2847 | if (IS_ERR(root)) { |
| 2848 | f2fs_msg(sb, KERN_ERR, "Failed to read root inode"); |
| 2849 | err = PTR_ERR(root); |
| 2850 | goto free_stats; |
| 2851 | } |
| 2852 | if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { |
| 2853 | iput(root); |
| 2854 | err = -EINVAL; |
| 2855 | goto free_node_inode; |
| 2856 | } |
| 2857 | |
| 2858 | sb->s_root = d_make_root(root); /* allocate root dentry */ |
| 2859 | if (!sb->s_root) { |
| 2860 | err = -ENOMEM; |
| 2861 | goto free_root_inode; |
| 2862 | } |
| 2863 | |
| 2864 | err = f2fs_register_sysfs(sbi); |
| 2865 | if (err) |
| 2866 | goto free_root_inode; |
| 2867 | |
| 2868 | #ifdef CONFIG_QUOTA |
| 2869 | /* |
| 2870 | * Turn on quotas which were not enabled for read-only mounts if |
| 2871 | * filesystem has quota feature, so that they are updated correctly. |
| 2872 | */ |
| 2873 | if (f2fs_sb_has_quota_ino(sb) && !f2fs_readonly(sb)) { |
| 2874 | err = f2fs_enable_quotas(sb); |
| 2875 | if (err) { |
| 2876 | f2fs_msg(sb, KERN_ERR, |
| 2877 | "Cannot turn on quotas: error %d", err); |
| 2878 | goto free_sysfs; |
| 2879 | } |
| 2880 | } |
| 2881 | #endif |
| 2882 | /* if there are nt orphan nodes free them */ |
| 2883 | err = recover_orphan_inodes(sbi); |
| 2884 | if (err) |
| 2885 | goto free_meta; |
| 2886 | |
| 2887 | /* recover fsynced data */ |
| 2888 | if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { |
| 2889 | /* |
| 2890 | * mount should be failed, when device has readonly mode, and |
| 2891 | * previous checkpoint was not done by clean system shutdown. |
| 2892 | */ |
| 2893 | if (bdev_read_only(sb->s_bdev) && |
| 2894 | !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { |
| 2895 | err = -EROFS; |
| 2896 | goto free_meta; |
| 2897 | } |
| 2898 | |
| 2899 | if (need_fsck) |
| 2900 | set_sbi_flag(sbi, SBI_NEED_FSCK); |
| 2901 | |
| 2902 | if (!retry) |
| 2903 | goto skip_recovery; |
| 2904 | |
| 2905 | err = recover_fsync_data(sbi, false); |
| 2906 | if (err < 0) { |
| 2907 | need_fsck = true; |
| 2908 | f2fs_msg(sb, KERN_ERR, |
| 2909 | "Cannot recover all fsync data errno=%d", err); |
| 2910 | goto free_meta; |
| 2911 | } |
| 2912 | } else { |
| 2913 | err = recover_fsync_data(sbi, true); |
| 2914 | |
| 2915 | if (!f2fs_readonly(sb) && err > 0) { |
| 2916 | err = -EINVAL; |
| 2917 | f2fs_msg(sb, KERN_ERR, |
| 2918 | "Need to recover fsync data"); |
| 2919 | goto free_meta; |
| 2920 | } |
| 2921 | } |
| 2922 | skip_recovery: |
| 2923 | /* recover_fsync_data() cleared this already */ |
| 2924 | clear_sbi_flag(sbi, SBI_POR_DOING); |
| 2925 | |
| 2926 | /* |
| 2927 | * If filesystem is not mounted as read-only then |
| 2928 | * do start the gc_thread. |
| 2929 | */ |
| 2930 | if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) { |
| 2931 | /* After POR, we can run background GC thread.*/ |
| 2932 | err = start_gc_thread(sbi); |
| 2933 | if (err) |
| 2934 | goto free_meta; |
| 2935 | } |
| 2936 | kfree(options); |
| 2937 | |
| 2938 | /* recover broken superblock */ |
| 2939 | if (recovery) { |
| 2940 | err = f2fs_commit_super(sbi, true); |
| 2941 | f2fs_msg(sb, KERN_INFO, |
| 2942 | "Try to recover %dth superblock, ret: %d", |
| 2943 | sbi->valid_super_block ? 1 : 2, err); |
| 2944 | } |
| 2945 | |
| 2946 | f2fs_join_shrinker(sbi); |
| 2947 | |
| 2948 | f2fs_tuning_parameters(sbi); |
| 2949 | |
| 2950 | f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx", |
| 2951 | cur_cp_version(F2FS_CKPT(sbi))); |
| 2952 | f2fs_update_time(sbi, CP_TIME); |
| 2953 | f2fs_update_time(sbi, REQ_TIME); |
| 2954 | return 0; |
| 2955 | |
| 2956 | free_meta: |
| 2957 | #ifdef CONFIG_QUOTA |
| 2958 | if (f2fs_sb_has_quota_ino(sb) && !f2fs_readonly(sb)) |
| 2959 | f2fs_quota_off_umount(sbi->sb); |
| 2960 | #endif |
| 2961 | f2fs_sync_inode_meta(sbi); |
| 2962 | /* |
| 2963 | * Some dirty meta pages can be produced by recover_orphan_inodes() |
| 2964 | * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() |
| 2965 | * followed by write_checkpoint() through f2fs_write_node_pages(), which |
| 2966 | * falls into an infinite loop in sync_meta_pages(). |
| 2967 | */ |
| 2968 | truncate_inode_pages_final(META_MAPPING(sbi)); |
| 2969 | #ifdef CONFIG_QUOTA |
| 2970 | free_sysfs: |
| 2971 | #endif |
| 2972 | f2fs_unregister_sysfs(sbi); |
| 2973 | free_root_inode: |
| 2974 | dput(sb->s_root); |
| 2975 | sb->s_root = NULL; |
| 2976 | free_stats: |
| 2977 | f2fs_destroy_stats(sbi); |
| 2978 | free_node_inode: |
| 2979 | release_ino_entry(sbi, true); |
| 2980 | truncate_inode_pages_final(NODE_MAPPING(sbi)); |
| 2981 | iput(sbi->node_inode); |
| 2982 | free_nm: |
| 2983 | destroy_node_manager(sbi); |
| 2984 | free_sm: |
| 2985 | destroy_segment_manager(sbi); |
| 2986 | free_devices: |
| 2987 | destroy_device_list(sbi); |
| 2988 | kfree(sbi->ckpt); |
| 2989 | free_meta_inode: |
| 2990 | make_bad_inode(sbi->meta_inode); |
| 2991 | iput(sbi->meta_inode); |
| 2992 | free_io_dummy: |
| 2993 | mempool_destroy(sbi->write_io_dummy); |
| 2994 | free_percpu: |
| 2995 | destroy_percpu_info(sbi); |
| 2996 | free_bio_info: |
| 2997 | for (i = 0; i < NR_PAGE_TYPE; i++) |
| 2998 | kfree(sbi->write_io[i]); |
| 2999 | free_options: |
| 3000 | #ifdef CONFIG_QUOTA |
| 3001 | for (i = 0; i < MAXQUOTAS; i++) |
| 3002 | kfree(F2FS_OPTION(sbi).s_qf_names[i]); |
| 3003 | #endif |
| 3004 | kfree(options); |
| 3005 | free_sb_buf: |
| 3006 | kfree(raw_super); |
| 3007 | free_sbi: |
| 3008 | if (sbi->s_chksum_driver) |
| 3009 | crypto_free_shash(sbi->s_chksum_driver); |
| 3010 | kfree(sbi); |
| 3011 | |
| 3012 | /* give only one another chance */ |
| 3013 | if (retry) { |
| 3014 | retry = false; |
| 3015 | shrink_dcache_sb(sb); |
| 3016 | goto try_onemore; |
| 3017 | } |
| 3018 | return err; |
| 3019 | } |
| 3020 | |
| 3021 | static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, |
| 3022 | const char *dev_name, void *data) |
| 3023 | { |
| 3024 | return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); |
| 3025 | } |
| 3026 | |
| 3027 | static void kill_f2fs_super(struct super_block *sb) |
| 3028 | { |
| 3029 | if (sb->s_root) { |
| 3030 | set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE); |
| 3031 | stop_gc_thread(F2FS_SB(sb)); |
| 3032 | stop_discard_thread(F2FS_SB(sb)); |
| 3033 | } |
| 3034 | kill_block_super(sb); |
| 3035 | } |
| 3036 | |
| 3037 | static struct file_system_type f2fs_fs_type = { |
| 3038 | .owner = THIS_MODULE, |
| 3039 | .name = "f2fs", |
| 3040 | .mount = f2fs_mount, |
| 3041 | .kill_sb = kill_f2fs_super, |
| 3042 | .fs_flags = FS_REQUIRES_DEV, |
| 3043 | }; |
| 3044 | MODULE_ALIAS_FS("f2fs"); |
| 3045 | |
| 3046 | static int __init init_inodecache(void) |
| 3047 | { |
| 3048 | f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", |
| 3049 | sizeof(struct f2fs_inode_info), 0, |
| 3050 | SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); |
| 3051 | if (!f2fs_inode_cachep) |
| 3052 | return -ENOMEM; |
| 3053 | return 0; |
| 3054 | } |
| 3055 | |
| 3056 | static void destroy_inodecache(void) |
| 3057 | { |
| 3058 | /* |
| 3059 | * Make sure all delayed rcu free inodes are flushed before we |
| 3060 | * destroy cache. |
| 3061 | */ |
| 3062 | rcu_barrier(); |
| 3063 | kmem_cache_destroy(f2fs_inode_cachep); |
| 3064 | } |
| 3065 | |
| 3066 | static int __init init_f2fs_fs(void) |
| 3067 | { |
| 3068 | int err; |
| 3069 | |
| 3070 | f2fs_build_trace_ios(); |
| 3071 | |
| 3072 | err = init_inodecache(); |
| 3073 | if (err) |
| 3074 | goto fail; |
| 3075 | err = create_node_manager_caches(); |
| 3076 | if (err) |
| 3077 | goto free_inodecache; |
| 3078 | err = create_segment_manager_caches(); |
| 3079 | if (err) |
| 3080 | goto free_node_manager_caches; |
| 3081 | err = create_checkpoint_caches(); |
| 3082 | if (err) |
| 3083 | goto free_segment_manager_caches; |
| 3084 | err = create_extent_cache(); |
| 3085 | if (err) |
| 3086 | goto free_checkpoint_caches; |
| 3087 | err = f2fs_init_sysfs(); |
| 3088 | if (err) |
| 3089 | goto free_extent_cache; |
| 3090 | err = register_shrinker(&f2fs_shrinker_info); |
| 3091 | if (err) |
| 3092 | goto free_sysfs; |
| 3093 | err = register_filesystem(&f2fs_fs_type); |
| 3094 | if (err) |
| 3095 | goto free_shrinker; |
| 3096 | err = f2fs_create_root_stats(); |
| 3097 | if (err) |
| 3098 | goto free_filesystem; |
| 3099 | err = f2fs_init_post_read_processing(); |
| 3100 | if (err) |
| 3101 | goto free_root_stats; |
| 3102 | return 0; |
| 3103 | |
| 3104 | free_root_stats: |
| 3105 | f2fs_destroy_root_stats(); |
| 3106 | free_filesystem: |
| 3107 | unregister_filesystem(&f2fs_fs_type); |
| 3108 | free_shrinker: |
| 3109 | unregister_shrinker(&f2fs_shrinker_info); |
| 3110 | free_sysfs: |
| 3111 | f2fs_exit_sysfs(); |
| 3112 | free_extent_cache: |
| 3113 | destroy_extent_cache(); |
| 3114 | free_checkpoint_caches: |
| 3115 | destroy_checkpoint_caches(); |
| 3116 | free_segment_manager_caches: |
| 3117 | destroy_segment_manager_caches(); |
| 3118 | free_node_manager_caches: |
| 3119 | destroy_node_manager_caches(); |
| 3120 | free_inodecache: |
| 3121 | destroy_inodecache(); |
| 3122 | fail: |
| 3123 | return err; |
| 3124 | } |
| 3125 | |
| 3126 | static void __exit exit_f2fs_fs(void) |
| 3127 | { |
| 3128 | f2fs_destroy_post_read_processing(); |
| 3129 | f2fs_destroy_root_stats(); |
| 3130 | unregister_filesystem(&f2fs_fs_type); |
| 3131 | unregister_shrinker(&f2fs_shrinker_info); |
| 3132 | f2fs_exit_sysfs(); |
| 3133 | destroy_extent_cache(); |
| 3134 | destroy_checkpoint_caches(); |
| 3135 | destroy_segment_manager_caches(); |
| 3136 | destroy_node_manager_caches(); |
| 3137 | destroy_inodecache(); |
| 3138 | f2fs_destroy_trace_ios(); |
| 3139 | } |
| 3140 | |
| 3141 | module_init(init_f2fs_fs) |
| 3142 | module_exit(exit_f2fs_fs) |
| 3143 | |
| 3144 | MODULE_AUTHOR("Samsung Electronics's Praesto Team"); |
| 3145 | MODULE_DESCRIPTION("Flash Friendly File System"); |
| 3146 | MODULE_LICENSE("GPL"); |
| 3147 | |