1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * fs/f2fs/super.c 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 */ 8 #include <linux/module.h> 9 #include <linux/init.h> 10 #include <linux/fs.h> 11 #include <linux/statfs.h> 12 #include <linux/buffer_head.h> 13 #include <linux/backing-dev.h> 14 #include <linux/kthread.h> 15 #include <linux/parser.h> 16 #include <linux/mount.h> 17 #include <linux/seq_file.h> 18 #include <linux/proc_fs.h> 19 #include <linux/random.h> 20 #include <linux/exportfs.h> 21 #include <linux/blkdev.h> 22 #include <linux/quotaops.h> 23 #include <linux/f2fs_fs.h> 24 #include <linux/sysfs.h> 25 #include <linux/quota.h> 26 27 #include "f2fs.h" 28 #include "node.h" 29 #include "segment.h" 30 #include "xattr.h" 31 #include "gc.h" 32 #include "trace.h" 33 34 #define CREATE_TRACE_POINTS 35 #include <trace/events/f2fs.h> 36 37 static struct kmem_cache *f2fs_inode_cachep; 38 39 #ifdef CONFIG_F2FS_FAULT_INJECTION 40 41 const char *f2fs_fault_name[FAULT_MAX] = { 42 [FAULT_KMALLOC] = "kmalloc", 43 [FAULT_KVMALLOC] = "kvmalloc", 44 [FAULT_PAGE_ALLOC] = "page alloc", 45 [FAULT_PAGE_GET] = "page get", 46 [FAULT_ALLOC_BIO] = "alloc bio", 47 [FAULT_ALLOC_NID] = "alloc nid", 48 [FAULT_ORPHAN] = "orphan", 49 [FAULT_BLOCK] = "no more block", 50 [FAULT_DIR_DEPTH] = "too big dir depth", 51 [FAULT_EVICT_INODE] = "evict_inode fail", 52 [FAULT_TRUNCATE] = "truncate fail", 53 [FAULT_READ_IO] = "read IO error", 54 [FAULT_CHECKPOINT] = "checkpoint error", 55 [FAULT_DISCARD] = "discard error", 56 [FAULT_WRITE_IO] = "write IO error", 57 }; 58 59 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, 60 unsigned int type) 61 { 62 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; 63 64 if (rate) { 65 atomic_set(&ffi->inject_ops, 0); 66 ffi->inject_rate = rate; 67 } 68 69 if (type) 70 ffi->inject_type = type; 71 72 if (!rate && !type) 73 memset(ffi, 0, sizeof(struct f2fs_fault_info)); 74 } 75 #endif 76 77 /* f2fs-wide shrinker description */ 78 static struct shrinker f2fs_shrinker_info = { 79 .scan_objects = f2fs_shrink_scan, 80 .count_objects = f2fs_shrink_count, 81 .seeks = DEFAULT_SEEKS, 82 }; 83 84 enum { 85 Opt_gc_background, 86 Opt_disable_roll_forward, 87 Opt_norecovery, 88 Opt_discard, 89 Opt_nodiscard, 90 Opt_noheap, 91 Opt_heap, 92 Opt_user_xattr, 93 Opt_nouser_xattr, 94 Opt_acl, 95 Opt_noacl, 96 Opt_active_logs, 97 Opt_disable_ext_identify, 98 Opt_inline_xattr, 99 Opt_noinline_xattr, 100 Opt_inline_xattr_size, 101 Opt_inline_data, 102 Opt_inline_dentry, 103 Opt_noinline_dentry, 104 Opt_flush_merge, 105 Opt_noflush_merge, 106 Opt_nobarrier, 107 Opt_fastboot, 108 Opt_extent_cache, 109 Opt_noextent_cache, 110 Opt_noinline_data, 111 Opt_data_flush, 112 Opt_reserve_root, 113 Opt_resgid, 114 Opt_resuid, 115 Opt_mode, 116 Opt_io_size_bits, 117 Opt_fault_injection, 118 Opt_fault_type, 119 Opt_lazytime, 120 Opt_nolazytime, 121 Opt_quota, 122 Opt_noquota, 123 Opt_usrquota, 124 Opt_grpquota, 125 Opt_prjquota, 126 Opt_usrjquota, 127 Opt_grpjquota, 128 Opt_prjjquota, 129 Opt_offusrjquota, 130 Opt_offgrpjquota, 131 Opt_offprjjquota, 132 Opt_jqfmt_vfsold, 133 Opt_jqfmt_vfsv0, 134 Opt_jqfmt_vfsv1, 135 Opt_whint, 136 Opt_alloc, 137 Opt_fsync, 138 Opt_test_dummy_encryption, 139 Opt_checkpoint, 140 Opt_err, 141 }; 142 143 static match_table_t f2fs_tokens = { 144 {Opt_gc_background, "background_gc=%s"}, 145 {Opt_disable_roll_forward, "disable_roll_forward"}, 146 {Opt_norecovery, "norecovery"}, 147 {Opt_discard, "discard"}, 148 {Opt_nodiscard, "nodiscard"}, 149 {Opt_noheap, "no_heap"}, 150 {Opt_heap, "heap"}, 151 {Opt_user_xattr, "user_xattr"}, 152 {Opt_nouser_xattr, "nouser_xattr"}, 153 {Opt_acl, "acl"}, 154 {Opt_noacl, "noacl"}, 155 {Opt_active_logs, "active_logs=%u"}, 156 {Opt_disable_ext_identify, "disable_ext_identify"}, 157 {Opt_inline_xattr, "inline_xattr"}, 158 {Opt_noinline_xattr, "noinline_xattr"}, 159 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 160 {Opt_inline_data, "inline_data"}, 161 {Opt_inline_dentry, "inline_dentry"}, 162 {Opt_noinline_dentry, "noinline_dentry"}, 163 {Opt_flush_merge, "flush_merge"}, 164 {Opt_noflush_merge, "noflush_merge"}, 165 {Opt_nobarrier, "nobarrier"}, 166 {Opt_fastboot, "fastboot"}, 167 {Opt_extent_cache, "extent_cache"}, 168 {Opt_noextent_cache, "noextent_cache"}, 169 {Opt_noinline_data, "noinline_data"}, 170 {Opt_data_flush, "data_flush"}, 171 {Opt_reserve_root, "reserve_root=%u"}, 172 {Opt_resgid, "resgid=%u"}, 173 {Opt_resuid, "resuid=%u"}, 174 {Opt_mode, "mode=%s"}, 175 {Opt_io_size_bits, "io_bits=%u"}, 176 {Opt_fault_injection, "fault_injection=%u"}, 177 {Opt_fault_type, "fault_type=%u"}, 178 {Opt_lazytime, "lazytime"}, 179 {Opt_nolazytime, "nolazytime"}, 180 {Opt_quota, "quota"}, 181 {Opt_noquota, "noquota"}, 182 {Opt_usrquota, "usrquota"}, 183 {Opt_grpquota, "grpquota"}, 184 {Opt_prjquota, "prjquota"}, 185 {Opt_usrjquota, "usrjquota=%s"}, 186 {Opt_grpjquota, "grpjquota=%s"}, 187 {Opt_prjjquota, "prjjquota=%s"}, 188 {Opt_offusrjquota, "usrjquota="}, 189 {Opt_offgrpjquota, "grpjquota="}, 190 {Opt_offprjjquota, "prjjquota="}, 191 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 192 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 193 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 194 {Opt_whint, "whint_mode=%s"}, 195 {Opt_alloc, "alloc_mode=%s"}, 196 {Opt_fsync, "fsync_mode=%s"}, 197 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 198 {Opt_checkpoint, "checkpoint=%s"}, 199 {Opt_err, NULL}, 200 }; 201 202 void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...) 203 { 204 struct va_format vaf; 205 va_list args; 206 207 va_start(args, fmt); 208 vaf.fmt = fmt; 209 vaf.va = &args; 210 printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf); 211 va_end(args); 212 } 213 214 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 215 { 216 block_t limit = (sbi->user_block_count << 1) / 1000; 217 218 /* limit is 0.2% */ 219 if (test_opt(sbi, RESERVE_ROOT) && 220 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 221 F2FS_OPTION(sbi).root_reserved_blocks = limit; 222 f2fs_msg(sbi->sb, KERN_INFO, 223 "Reduce reserved blocks for root = %u", 224 F2FS_OPTION(sbi).root_reserved_blocks); 225 } 226 if (!test_opt(sbi, RESERVE_ROOT) && 227 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 228 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 229 !gid_eq(F2FS_OPTION(sbi).s_resgid, 230 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 231 f2fs_msg(sbi->sb, KERN_INFO, 232 "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 233 from_kuid_munged(&init_user_ns, 234 F2FS_OPTION(sbi).s_resuid), 235 from_kgid_munged(&init_user_ns, 236 F2FS_OPTION(sbi).s_resgid)); 237 } 238 239 static void init_once(void *foo) 240 { 241 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 242 243 inode_init_once(&fi->vfs_inode); 244 } 245 246 #ifdef CONFIG_QUOTA 247 static const char * const quotatypes[] = INITQFNAMES; 248 #define QTYPE2NAME(t) (quotatypes[t]) 249 static int f2fs_set_qf_name(struct super_block *sb, int qtype, 250 substring_t *args) 251 { 252 struct f2fs_sb_info *sbi = F2FS_SB(sb); 253 char *qname; 254 int ret = -EINVAL; 255 256 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 257 f2fs_msg(sb, KERN_ERR, 258 "Cannot change journaled " 259 "quota options when quota turned on"); 260 return -EINVAL; 261 } 262 if (f2fs_sb_has_quota_ino(sbi)) { 263 f2fs_msg(sb, KERN_INFO, 264 "QUOTA feature is enabled, so ignore qf_name"); 265 return 0; 266 } 267 268 qname = match_strdup(args); 269 if (!qname) { 270 f2fs_msg(sb, KERN_ERR, 271 "Not enough memory for storing quotafile name"); 272 return -ENOMEM; 273 } 274 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 275 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 276 ret = 0; 277 else 278 f2fs_msg(sb, KERN_ERR, 279 "%s quota file already specified", 280 QTYPE2NAME(qtype)); 281 goto errout; 282 } 283 if (strchr(qname, '/')) { 284 f2fs_msg(sb, KERN_ERR, 285 "quotafile must be on filesystem root"); 286 goto errout; 287 } 288 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 289 set_opt(sbi, QUOTA); 290 return 0; 291 errout: 292 kvfree(qname); 293 return ret; 294 } 295 296 static int f2fs_clear_qf_name(struct super_block *sb, int qtype) 297 { 298 struct f2fs_sb_info *sbi = F2FS_SB(sb); 299 300 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { 301 f2fs_msg(sb, KERN_ERR, "Cannot change journaled quota options" 302 " when quota turned on"); 303 return -EINVAL; 304 } 305 kvfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 306 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 307 return 0; 308 } 309 310 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 311 { 312 /* 313 * We do the test below only for project quotas. 'usrquota' and 314 * 'grpquota' mount options are allowed even without quota feature 315 * to support legacy quotas in quota files. 316 */ 317 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 318 f2fs_msg(sbi->sb, KERN_ERR, "Project quota feature not enabled. " 319 "Cannot enable project quota enforcement."); 320 return -1; 321 } 322 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 323 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 324 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 325 if (test_opt(sbi, USRQUOTA) && 326 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 327 clear_opt(sbi, USRQUOTA); 328 329 if (test_opt(sbi, GRPQUOTA) && 330 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 331 clear_opt(sbi, GRPQUOTA); 332 333 if (test_opt(sbi, PRJQUOTA) && 334 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 335 clear_opt(sbi, PRJQUOTA); 336 337 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 338 test_opt(sbi, PRJQUOTA)) { 339 f2fs_msg(sbi->sb, KERN_ERR, "old and new quota " 340 "format mixing"); 341 return -1; 342 } 343 344 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 345 f2fs_msg(sbi->sb, KERN_ERR, "journaled quota format " 346 "not specified"); 347 return -1; 348 } 349 } 350 351 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 352 f2fs_msg(sbi->sb, KERN_INFO, 353 "QUOTA feature is enabled, so ignore jquota_fmt"); 354 F2FS_OPTION(sbi).s_jquota_fmt = 0; 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 substring_t args[MAX_OPT_ARGS]; 364 char *p, *name; 365 int arg = 0; 366 kuid_t uid; 367 kgid_t gid; 368 #ifdef CONFIG_QUOTA 369 int ret; 370 #endif 371 372 if (!options) 373 return 0; 374 375 while ((p = strsep(&options, ",")) != NULL) { 376 int token; 377 if (!*p) 378 continue; 379 /* 380 * Initialize args struct so we know whether arg was 381 * found; some options take optional arguments. 382 */ 383 args[0].to = args[0].from = NULL; 384 token = match_token(p, f2fs_tokens, args); 385 386 switch (token) { 387 case Opt_gc_background: 388 name = match_strdup(&args[0]); 389 390 if (!name) 391 return -ENOMEM; 392 if (strlen(name) == 2 && !strncmp(name, "on", 2)) { 393 set_opt(sbi, BG_GC); 394 clear_opt(sbi, FORCE_FG_GC); 395 } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) { 396 clear_opt(sbi, BG_GC); 397 clear_opt(sbi, FORCE_FG_GC); 398 } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) { 399 set_opt(sbi, BG_GC); 400 set_opt(sbi, FORCE_FG_GC); 401 } else { 402 kvfree(name); 403 return -EINVAL; 404 } 405 kvfree(name); 406 break; 407 case Opt_disable_roll_forward: 408 set_opt(sbi, DISABLE_ROLL_FORWARD); 409 break; 410 case Opt_norecovery: 411 /* this option mounts f2fs with ro */ 412 set_opt(sbi, DISABLE_ROLL_FORWARD); 413 if (!f2fs_readonly(sb)) 414 return -EINVAL; 415 break; 416 case Opt_discard: 417 set_opt(sbi, DISCARD); 418 break; 419 case Opt_nodiscard: 420 if (f2fs_sb_has_blkzoned(sbi)) { 421 f2fs_msg(sb, KERN_WARNING, 422 "discard is required for zoned block devices"); 423 return -EINVAL; 424 } 425 clear_opt(sbi, DISCARD); 426 break; 427 case Opt_noheap: 428 set_opt(sbi, NOHEAP); 429 break; 430 case Opt_heap: 431 clear_opt(sbi, NOHEAP); 432 break; 433 #ifdef CONFIG_F2FS_FS_XATTR 434 case Opt_user_xattr: 435 set_opt(sbi, XATTR_USER); 436 break; 437 case Opt_nouser_xattr: 438 clear_opt(sbi, XATTR_USER); 439 break; 440 case Opt_inline_xattr: 441 set_opt(sbi, INLINE_XATTR); 442 break; 443 case Opt_noinline_xattr: 444 clear_opt(sbi, INLINE_XATTR); 445 break; 446 case Opt_inline_xattr_size: 447 if (args->from && match_int(args, &arg)) 448 return -EINVAL; 449 set_opt(sbi, INLINE_XATTR_SIZE); 450 F2FS_OPTION(sbi).inline_xattr_size = arg; 451 break; 452 #else 453 case Opt_user_xattr: 454 f2fs_msg(sb, KERN_INFO, 455 "user_xattr options not supported"); 456 break; 457 case Opt_nouser_xattr: 458 f2fs_msg(sb, KERN_INFO, 459 "nouser_xattr options not supported"); 460 break; 461 case Opt_inline_xattr: 462 f2fs_msg(sb, KERN_INFO, 463 "inline_xattr options not supported"); 464 break; 465 case Opt_noinline_xattr: 466 f2fs_msg(sb, KERN_INFO, 467 "noinline_xattr options not supported"); 468 break; 469 #endif 470 #ifdef CONFIG_F2FS_FS_POSIX_ACL 471 case Opt_acl: 472 set_opt(sbi, POSIX_ACL); 473 break; 474 case Opt_noacl: 475 clear_opt(sbi, POSIX_ACL); 476 break; 477 #else 478 case Opt_acl: 479 f2fs_msg(sb, KERN_INFO, "acl options not supported"); 480 break; 481 case Opt_noacl: 482 f2fs_msg(sb, KERN_INFO, "noacl options not supported"); 483 break; 484 #endif 485 case Opt_active_logs: 486 if (args->from && match_int(args, &arg)) 487 return -EINVAL; 488 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE) 489 return -EINVAL; 490 F2FS_OPTION(sbi).active_logs = arg; 491 break; 492 case Opt_disable_ext_identify: 493 set_opt(sbi, DISABLE_EXT_IDENTIFY); 494 break; 495 case Opt_inline_data: 496 set_opt(sbi, INLINE_DATA); 497 break; 498 case Opt_inline_dentry: 499 set_opt(sbi, INLINE_DENTRY); 500 break; 501 case Opt_noinline_dentry: 502 clear_opt(sbi, INLINE_DENTRY); 503 break; 504 case Opt_flush_merge: 505 set_opt(sbi, FLUSH_MERGE); 506 break; 507 case Opt_noflush_merge: 508 clear_opt(sbi, FLUSH_MERGE); 509 break; 510 case Opt_nobarrier: 511 set_opt(sbi, NOBARRIER); 512 break; 513 case Opt_fastboot: 514 set_opt(sbi, FASTBOOT); 515 break; 516 case Opt_extent_cache: 517 set_opt(sbi, EXTENT_CACHE); 518 break; 519 case Opt_noextent_cache: 520 clear_opt(sbi, EXTENT_CACHE); 521 break; 522 case Opt_noinline_data: 523 clear_opt(sbi, INLINE_DATA); 524 break; 525 case Opt_data_flush: 526 set_opt(sbi, DATA_FLUSH); 527 break; 528 case Opt_reserve_root: 529 if (args->from && match_int(args, &arg)) 530 return -EINVAL; 531 if (test_opt(sbi, RESERVE_ROOT)) { 532 f2fs_msg(sb, KERN_INFO, 533 "Preserve previous reserve_root=%u", 534 F2FS_OPTION(sbi).root_reserved_blocks); 535 } else { 536 F2FS_OPTION(sbi).root_reserved_blocks = arg; 537 set_opt(sbi, RESERVE_ROOT); 538 } 539 break; 540 case Opt_resuid: 541 if (args->from && match_int(args, &arg)) 542 return -EINVAL; 543 uid = make_kuid(current_user_ns(), arg); 544 if (!uid_valid(uid)) { 545 f2fs_msg(sb, KERN_ERR, 546 "Invalid uid value %d", arg); 547 return -EINVAL; 548 } 549 F2FS_OPTION(sbi).s_resuid = uid; 550 break; 551 case Opt_resgid: 552 if (args->from && match_int(args, &arg)) 553 return -EINVAL; 554 gid = make_kgid(current_user_ns(), arg); 555 if (!gid_valid(gid)) { 556 f2fs_msg(sb, KERN_ERR, 557 "Invalid gid value %d", arg); 558 return -EINVAL; 559 } 560 F2FS_OPTION(sbi).s_resgid = gid; 561 break; 562 case Opt_mode: 563 name = match_strdup(&args[0]); 564 565 if (!name) 566 return -ENOMEM; 567 if (strlen(name) == 8 && 568 !strncmp(name, "adaptive", 8)) { 569 if (f2fs_sb_has_blkzoned(sbi)) { 570 f2fs_msg(sb, KERN_WARNING, 571 "adaptive mode is not allowed with " 572 "zoned block device feature"); 573 kvfree(name); 574 return -EINVAL; 575 } 576 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); 577 } else if (strlen(name) == 3 && 578 !strncmp(name, "lfs", 3)) { 579 set_opt_mode(sbi, F2FS_MOUNT_LFS); 580 } else { 581 kvfree(name); 582 return -EINVAL; 583 } 584 kvfree(name); 585 break; 586 case Opt_io_size_bits: 587 if (args->from && match_int(args, &arg)) 588 return -EINVAL; 589 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_PAGES)) { 590 f2fs_msg(sb, KERN_WARNING, 591 "Not support %d, larger than %d", 592 1 << arg, BIO_MAX_PAGES); 593 return -EINVAL; 594 } 595 F2FS_OPTION(sbi).write_io_size_bits = arg; 596 break; 597 #ifdef CONFIG_F2FS_FAULT_INJECTION 598 case Opt_fault_injection: 599 if (args->from && match_int(args, &arg)) 600 return -EINVAL; 601 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE); 602 set_opt(sbi, FAULT_INJECTION); 603 break; 604 605 case Opt_fault_type: 606 if (args->from && match_int(args, &arg)) 607 return -EINVAL; 608 f2fs_build_fault_attr(sbi, 0, arg); 609 set_opt(sbi, FAULT_INJECTION); 610 break; 611 #else 612 case Opt_fault_injection: 613 f2fs_msg(sb, KERN_INFO, 614 "fault_injection options not supported"); 615 break; 616 617 case Opt_fault_type: 618 f2fs_msg(sb, KERN_INFO, 619 "fault_type options not supported"); 620 break; 621 #endif 622 case Opt_lazytime: 623 sb->s_flags |= SB_LAZYTIME; 624 break; 625 case Opt_nolazytime: 626 sb->s_flags &= ~SB_LAZYTIME; 627 break; 628 #ifdef CONFIG_QUOTA 629 case Opt_quota: 630 case Opt_usrquota: 631 set_opt(sbi, USRQUOTA); 632 break; 633 case Opt_grpquota: 634 set_opt(sbi, GRPQUOTA); 635 break; 636 case Opt_prjquota: 637 set_opt(sbi, PRJQUOTA); 638 break; 639 case Opt_usrjquota: 640 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 641 if (ret) 642 return ret; 643 break; 644 case Opt_grpjquota: 645 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 646 if (ret) 647 return ret; 648 break; 649 case Opt_prjjquota: 650 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 651 if (ret) 652 return ret; 653 break; 654 case Opt_offusrjquota: 655 ret = f2fs_clear_qf_name(sb, USRQUOTA); 656 if (ret) 657 return ret; 658 break; 659 case Opt_offgrpjquota: 660 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 661 if (ret) 662 return ret; 663 break; 664 case Opt_offprjjquota: 665 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 666 if (ret) 667 return ret; 668 break; 669 case Opt_jqfmt_vfsold: 670 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 671 break; 672 case Opt_jqfmt_vfsv0: 673 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 674 break; 675 case Opt_jqfmt_vfsv1: 676 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 677 break; 678 case Opt_noquota: 679 clear_opt(sbi, QUOTA); 680 clear_opt(sbi, USRQUOTA); 681 clear_opt(sbi, GRPQUOTA); 682 clear_opt(sbi, PRJQUOTA); 683 break; 684 #else 685 case Opt_quota: 686 case Opt_usrquota: 687 case Opt_grpquota: 688 case Opt_prjquota: 689 case Opt_usrjquota: 690 case Opt_grpjquota: 691 case Opt_prjjquota: 692 case Opt_offusrjquota: 693 case Opt_offgrpjquota: 694 case Opt_offprjjquota: 695 case Opt_jqfmt_vfsold: 696 case Opt_jqfmt_vfsv0: 697 case Opt_jqfmt_vfsv1: 698 case Opt_noquota: 699 f2fs_msg(sb, KERN_INFO, 700 "quota operations not supported"); 701 break; 702 #endif 703 case Opt_whint: 704 name = match_strdup(&args[0]); 705 if (!name) 706 return -ENOMEM; 707 if (strlen(name) == 10 && 708 !strncmp(name, "user-based", 10)) { 709 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER; 710 } else if (strlen(name) == 3 && 711 !strncmp(name, "off", 3)) { 712 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; 713 } else if (strlen(name) == 8 && 714 !strncmp(name, "fs-based", 8)) { 715 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS; 716 } else { 717 kvfree(name); 718 return -EINVAL; 719 } 720 kvfree(name); 721 break; 722 case Opt_alloc: 723 name = match_strdup(&args[0]); 724 if (!name) 725 return -ENOMEM; 726 727 if (strlen(name) == 7 && 728 !strncmp(name, "default", 7)) { 729 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 730 } else if (strlen(name) == 5 && 731 !strncmp(name, "reuse", 5)) { 732 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 733 } else { 734 kvfree(name); 735 return -EINVAL; 736 } 737 kvfree(name); 738 break; 739 case Opt_fsync: 740 name = match_strdup(&args[0]); 741 if (!name) 742 return -ENOMEM; 743 if (strlen(name) == 5 && 744 !strncmp(name, "posix", 5)) { 745 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 746 } else if (strlen(name) == 6 && 747 !strncmp(name, "strict", 6)) { 748 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 749 } else if (strlen(name) == 9 && 750 !strncmp(name, "nobarrier", 9)) { 751 F2FS_OPTION(sbi).fsync_mode = 752 FSYNC_MODE_NOBARRIER; 753 } else { 754 kvfree(name); 755 return -EINVAL; 756 } 757 kvfree(name); 758 break; 759 case Opt_test_dummy_encryption: 760 #ifdef CONFIG_FS_ENCRYPTION 761 if (!f2fs_sb_has_encrypt(sbi)) { 762 f2fs_msg(sb, KERN_ERR, "Encrypt feature is off"); 763 return -EINVAL; 764 } 765 766 F2FS_OPTION(sbi).test_dummy_encryption = true; 767 f2fs_msg(sb, KERN_INFO, 768 "Test dummy encryption mode enabled"); 769 #else 770 f2fs_msg(sb, KERN_INFO, 771 "Test dummy encryption mount option ignored"); 772 #endif 773 break; 774 case Opt_checkpoint: 775 name = match_strdup(&args[0]); 776 if (!name) 777 return -ENOMEM; 778 779 if (strlen(name) == 6 && 780 !strncmp(name, "enable", 6)) { 781 clear_opt(sbi, DISABLE_CHECKPOINT); 782 } else if (strlen(name) == 7 && 783 !strncmp(name, "disable", 7)) { 784 set_opt(sbi, DISABLE_CHECKPOINT); 785 } else { 786 kvfree(name); 787 return -EINVAL; 788 } 789 kvfree(name); 790 break; 791 default: 792 f2fs_msg(sb, KERN_ERR, 793 "Unrecognized mount option \"%s\" or missing value", 794 p); 795 return -EINVAL; 796 } 797 } 798 #ifdef CONFIG_QUOTA 799 if (f2fs_check_quota_options(sbi)) 800 return -EINVAL; 801 #else 802 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 803 f2fs_msg(sbi->sb, KERN_INFO, 804 "Filesystem with quota feature cannot be mounted RDWR " 805 "without CONFIG_QUOTA"); 806 return -EINVAL; 807 } 808 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 809 f2fs_msg(sb, KERN_ERR, 810 "Filesystem with project quota feature cannot be " 811 "mounted RDWR without CONFIG_QUOTA"); 812 return -EINVAL; 813 } 814 #endif 815 816 if (F2FS_IO_SIZE_BITS(sbi) && !test_opt(sbi, LFS)) { 817 f2fs_msg(sb, KERN_ERR, 818 "Should set mode=lfs with %uKB-sized IO", 819 F2FS_IO_SIZE_KB(sbi)); 820 return -EINVAL; 821 } 822 823 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 824 int min_size, max_size; 825 826 if (!f2fs_sb_has_extra_attr(sbi) || 827 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 828 f2fs_msg(sb, KERN_ERR, 829 "extra_attr or flexible_inline_xattr " 830 "feature is off"); 831 return -EINVAL; 832 } 833 if (!test_opt(sbi, INLINE_XATTR)) { 834 f2fs_msg(sb, KERN_ERR, 835 "inline_xattr_size option should be " 836 "set with inline_xattr option"); 837 return -EINVAL; 838 } 839 840 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32); 841 max_size = MAX_INLINE_XATTR_SIZE; 842 843 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 844 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 845 f2fs_msg(sb, KERN_ERR, 846 "inline xattr size is out of range: %d ~ %d", 847 min_size, max_size); 848 return -EINVAL; 849 } 850 } 851 852 if (test_opt(sbi, DISABLE_CHECKPOINT) && test_opt(sbi, LFS)) { 853 f2fs_msg(sb, KERN_ERR, 854 "LFS not compatible with checkpoint=disable\n"); 855 return -EINVAL; 856 } 857 858 /* Not pass down write hints if the number of active logs is lesser 859 * than NR_CURSEG_TYPE. 860 */ 861 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE) 862 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; 863 return 0; 864 } 865 866 static struct inode *f2fs_alloc_inode(struct super_block *sb) 867 { 868 struct f2fs_inode_info *fi; 869 870 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); 871 if (!fi) 872 return NULL; 873 874 init_once((void *) fi); 875 876 /* Initialize f2fs-specific inode info */ 877 atomic_set(&fi->dirty_pages, 0); 878 init_rwsem(&fi->i_sem); 879 INIT_LIST_HEAD(&fi->dirty_list); 880 INIT_LIST_HEAD(&fi->gdirty_list); 881 INIT_LIST_HEAD(&fi->inmem_ilist); 882 INIT_LIST_HEAD(&fi->inmem_pages); 883 mutex_init(&fi->inmem_lock); 884 init_rwsem(&fi->i_gc_rwsem[READ]); 885 init_rwsem(&fi->i_gc_rwsem[WRITE]); 886 init_rwsem(&fi->i_mmap_sem); 887 init_rwsem(&fi->i_xattr_sem); 888 889 /* Will be used by directory only */ 890 fi->i_dir_level = F2FS_SB(sb)->dir_level; 891 892 return &fi->vfs_inode; 893 } 894 895 static int f2fs_drop_inode(struct inode *inode) 896 { 897 int ret; 898 /* 899 * This is to avoid a deadlock condition like below. 900 * writeback_single_inode(inode) 901 * - f2fs_write_data_page 902 * - f2fs_gc -> iput -> evict 903 * - inode_wait_for_writeback(inode) 904 */ 905 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 906 if (!inode->i_nlink && !is_bad_inode(inode)) { 907 /* to avoid evict_inode call simultaneously */ 908 atomic_inc(&inode->i_count); 909 spin_unlock(&inode->i_lock); 910 911 /* some remained atomic pages should discarded */ 912 if (f2fs_is_atomic_file(inode)) 913 f2fs_drop_inmem_pages(inode); 914 915 /* should remain fi->extent_tree for writepage */ 916 f2fs_destroy_extent_node(inode); 917 918 sb_start_intwrite(inode->i_sb); 919 f2fs_i_size_write(inode, 0); 920 921 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 922 inode, NULL, 0, DATA); 923 truncate_inode_pages_final(inode->i_mapping); 924 925 if (F2FS_HAS_BLOCKS(inode)) 926 f2fs_truncate(inode); 927 928 sb_end_intwrite(inode->i_sb); 929 930 spin_lock(&inode->i_lock); 931 atomic_dec(&inode->i_count); 932 } 933 trace_f2fs_drop_inode(inode, 0); 934 return 0; 935 } 936 ret = generic_drop_inode(inode); 937 trace_f2fs_drop_inode(inode, ret); 938 return ret; 939 } 940 941 int f2fs_inode_dirtied(struct inode *inode, bool sync) 942 { 943 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 944 int ret = 0; 945 946 spin_lock(&sbi->inode_lock[DIRTY_META]); 947 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 948 ret = 1; 949 } else { 950 set_inode_flag(inode, FI_DIRTY_INODE); 951 stat_inc_dirty_inode(sbi, DIRTY_META); 952 } 953 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 954 list_add_tail(&F2FS_I(inode)->gdirty_list, 955 &sbi->inode_list[DIRTY_META]); 956 inc_page_count(sbi, F2FS_DIRTY_IMETA); 957 } 958 spin_unlock(&sbi->inode_lock[DIRTY_META]); 959 return ret; 960 } 961 962 void f2fs_inode_synced(struct inode *inode) 963 { 964 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 965 966 spin_lock(&sbi->inode_lock[DIRTY_META]); 967 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 968 spin_unlock(&sbi->inode_lock[DIRTY_META]); 969 return; 970 } 971 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 972 list_del_init(&F2FS_I(inode)->gdirty_list); 973 dec_page_count(sbi, F2FS_DIRTY_IMETA); 974 } 975 clear_inode_flag(inode, FI_DIRTY_INODE); 976 clear_inode_flag(inode, FI_AUTO_RECOVER); 977 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 978 spin_unlock(&sbi->inode_lock[DIRTY_META]); 979 } 980 981 /* 982 * f2fs_dirty_inode() is called from __mark_inode_dirty() 983 * 984 * We should call set_dirty_inode to write the dirty inode through write_inode. 985 */ 986 static void f2fs_dirty_inode(struct inode *inode, int flags) 987 { 988 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 989 990 if (inode->i_ino == F2FS_NODE_INO(sbi) || 991 inode->i_ino == F2FS_META_INO(sbi)) 992 return; 993 994 if (flags == I_DIRTY_TIME) 995 return; 996 997 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 998 clear_inode_flag(inode, FI_AUTO_RECOVER); 999 1000 f2fs_inode_dirtied(inode, false); 1001 } 1002 1003 static void f2fs_free_inode(struct inode *inode) 1004 { 1005 fscrypt_free_inode(inode); 1006 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1007 } 1008 1009 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1010 { 1011 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1012 percpu_counter_destroy(&sbi->total_valid_inode_count); 1013 } 1014 1015 static void destroy_device_list(struct f2fs_sb_info *sbi) 1016 { 1017 int i; 1018 1019 for (i = 0; i < sbi->s_ndevs; i++) { 1020 blkdev_put(FDEV(i).bdev, FMODE_EXCL); 1021 #ifdef CONFIG_BLK_DEV_ZONED 1022 kvfree(FDEV(i).blkz_type); 1023 #endif 1024 } 1025 kvfree(sbi->devs); 1026 } 1027 1028 static void f2fs_put_super(struct super_block *sb) 1029 { 1030 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1031 int i; 1032 bool dropped; 1033 1034 f2fs_quota_off_umount(sb); 1035 1036 /* prevent remaining shrinker jobs */ 1037 mutex_lock(&sbi->umount_mutex); 1038 1039 /* 1040 * We don't need to do checkpoint when superblock is clean. 1041 * But, the previous checkpoint was not done by umount, it needs to do 1042 * clean checkpoint again. 1043 */ 1044 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1045 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1046 struct cp_control cpc = { 1047 .reason = CP_UMOUNT, 1048 }; 1049 f2fs_write_checkpoint(sbi, &cpc); 1050 } 1051 1052 /* be sure to wait for any on-going discard commands */ 1053 dropped = f2fs_issue_discard_timeout(sbi); 1054 1055 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) && 1056 !sbi->discard_blks && !dropped) { 1057 struct cp_control cpc = { 1058 .reason = CP_UMOUNT | CP_TRIMMED, 1059 }; 1060 f2fs_write_checkpoint(sbi, &cpc); 1061 } 1062 1063 /* 1064 * normally superblock is clean, so we need to release this. 1065 * In addition, EIO will skip do checkpoint, we need this as well. 1066 */ 1067 f2fs_release_ino_entry(sbi, true); 1068 1069 f2fs_leave_shrinker(sbi); 1070 mutex_unlock(&sbi->umount_mutex); 1071 1072 /* our cp_error case, we can wait for any writeback page */ 1073 f2fs_flush_merged_writes(sbi); 1074 1075 f2fs_wait_on_all_pages_writeback(sbi); 1076 1077 f2fs_bug_on(sbi, sbi->fsync_node_num); 1078 1079 iput(sbi->node_inode); 1080 sbi->node_inode = NULL; 1081 1082 iput(sbi->meta_inode); 1083 sbi->meta_inode = NULL; 1084 1085 /* 1086 * iput() can update stat information, if f2fs_write_checkpoint() 1087 * above failed with error. 1088 */ 1089 f2fs_destroy_stats(sbi); 1090 1091 /* destroy f2fs internal modules */ 1092 f2fs_destroy_node_manager(sbi); 1093 f2fs_destroy_segment_manager(sbi); 1094 1095 kvfree(sbi->ckpt); 1096 1097 f2fs_unregister_sysfs(sbi); 1098 1099 sb->s_fs_info = NULL; 1100 if (sbi->s_chksum_driver) 1101 crypto_free_shash(sbi->s_chksum_driver); 1102 kvfree(sbi->raw_super); 1103 1104 destroy_device_list(sbi); 1105 mempool_destroy(sbi->write_io_dummy); 1106 #ifdef CONFIG_QUOTA 1107 for (i = 0; i < MAXQUOTAS; i++) 1108 kvfree(F2FS_OPTION(sbi).s_qf_names[i]); 1109 #endif 1110 destroy_percpu_info(sbi); 1111 for (i = 0; i < NR_PAGE_TYPE; i++) 1112 kvfree(sbi->write_io[i]); 1113 kvfree(sbi); 1114 } 1115 1116 int f2fs_sync_fs(struct super_block *sb, int sync) 1117 { 1118 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1119 int err = 0; 1120 1121 if (unlikely(f2fs_cp_error(sbi))) 1122 return 0; 1123 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1124 return 0; 1125 1126 trace_f2fs_sync_fs(sb, sync); 1127 1128 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1129 return -EAGAIN; 1130 1131 if (sync) { 1132 struct cp_control cpc; 1133 1134 cpc.reason = __get_cp_reason(sbi); 1135 1136 mutex_lock(&sbi->gc_mutex); 1137 err = f2fs_write_checkpoint(sbi, &cpc); 1138 mutex_unlock(&sbi->gc_mutex); 1139 } 1140 f2fs_trace_ios(NULL, 1); 1141 1142 return err; 1143 } 1144 1145 static int f2fs_freeze(struct super_block *sb) 1146 { 1147 if (f2fs_readonly(sb)) 1148 return 0; 1149 1150 /* IO error happened before */ 1151 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1152 return -EIO; 1153 1154 /* must be clean, since sync_filesystem() was already called */ 1155 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1156 return -EINVAL; 1157 return 0; 1158 } 1159 1160 static int f2fs_unfreeze(struct super_block *sb) 1161 { 1162 return 0; 1163 } 1164 1165 #ifdef CONFIG_QUOTA 1166 static int f2fs_statfs_project(struct super_block *sb, 1167 kprojid_t projid, struct kstatfs *buf) 1168 { 1169 struct kqid qid; 1170 struct dquot *dquot; 1171 u64 limit; 1172 u64 curblock; 1173 1174 qid = make_kqid_projid(projid); 1175 dquot = dqget(sb, qid); 1176 if (IS_ERR(dquot)) 1177 return PTR_ERR(dquot); 1178 spin_lock(&dquot->dq_dqb_lock); 1179 1180 limit = (dquot->dq_dqb.dqb_bsoftlimit ? 1181 dquot->dq_dqb.dqb_bsoftlimit : 1182 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits; 1183 if (limit && buf->f_blocks > limit) { 1184 curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits; 1185 buf->f_blocks = limit; 1186 buf->f_bfree = buf->f_bavail = 1187 (buf->f_blocks > curblock) ? 1188 (buf->f_blocks - curblock) : 0; 1189 } 1190 1191 limit = dquot->dq_dqb.dqb_isoftlimit ? 1192 dquot->dq_dqb.dqb_isoftlimit : 1193 dquot->dq_dqb.dqb_ihardlimit; 1194 if (limit && buf->f_files > limit) { 1195 buf->f_files = limit; 1196 buf->f_ffree = 1197 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1198 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1199 } 1200 1201 spin_unlock(&dquot->dq_dqb_lock); 1202 dqput(dquot); 1203 return 0; 1204 } 1205 #endif 1206 1207 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1208 { 1209 struct super_block *sb = dentry->d_sb; 1210 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1211 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1212 block_t total_count, user_block_count, start_count; 1213 u64 avail_node_count; 1214 1215 total_count = le64_to_cpu(sbi->raw_super->block_count); 1216 user_block_count = sbi->user_block_count; 1217 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1218 buf->f_type = F2FS_SUPER_MAGIC; 1219 buf->f_bsize = sbi->blocksize; 1220 1221 buf->f_blocks = total_count - start_count; 1222 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1223 sbi->current_reserved_blocks; 1224 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1225 buf->f_bfree = 0; 1226 else 1227 buf->f_bfree -= sbi->unusable_block_count; 1228 1229 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1230 buf->f_bavail = buf->f_bfree - 1231 F2FS_OPTION(sbi).root_reserved_blocks; 1232 else 1233 buf->f_bavail = 0; 1234 1235 avail_node_count = sbi->total_node_count - sbi->nquota_files - 1236 F2FS_RESERVED_NODE_NUM; 1237 1238 if (avail_node_count > user_block_count) { 1239 buf->f_files = user_block_count; 1240 buf->f_ffree = buf->f_bavail; 1241 } else { 1242 buf->f_files = avail_node_count; 1243 buf->f_ffree = min(avail_node_count - valid_node_count(sbi), 1244 buf->f_bavail); 1245 } 1246 1247 buf->f_namelen = F2FS_NAME_LEN; 1248 buf->f_fsid.val[0] = (u32)id; 1249 buf->f_fsid.val[1] = (u32)(id >> 32); 1250 1251 #ifdef CONFIG_QUOTA 1252 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1253 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1254 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1255 } 1256 #endif 1257 return 0; 1258 } 1259 1260 static inline void f2fs_show_quota_options(struct seq_file *seq, 1261 struct super_block *sb) 1262 { 1263 #ifdef CONFIG_QUOTA 1264 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1265 1266 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1267 char *fmtname = ""; 1268 1269 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1270 case QFMT_VFS_OLD: 1271 fmtname = "vfsold"; 1272 break; 1273 case QFMT_VFS_V0: 1274 fmtname = "vfsv0"; 1275 break; 1276 case QFMT_VFS_V1: 1277 fmtname = "vfsv1"; 1278 break; 1279 } 1280 seq_printf(seq, ",jqfmt=%s", fmtname); 1281 } 1282 1283 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1284 seq_show_option(seq, "usrjquota", 1285 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1286 1287 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1288 seq_show_option(seq, "grpjquota", 1289 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1290 1291 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1292 seq_show_option(seq, "prjjquota", 1293 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1294 #endif 1295 } 1296 1297 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1298 { 1299 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1300 1301 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) { 1302 if (test_opt(sbi, FORCE_FG_GC)) 1303 seq_printf(seq, ",background_gc=%s", "sync"); 1304 else 1305 seq_printf(seq, ",background_gc=%s", "on"); 1306 } else { 1307 seq_printf(seq, ",background_gc=%s", "off"); 1308 } 1309 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1310 seq_puts(seq, ",disable_roll_forward"); 1311 if (test_opt(sbi, DISCARD)) 1312 seq_puts(seq, ",discard"); 1313 if (test_opt(sbi, NOHEAP)) 1314 seq_puts(seq, ",no_heap"); 1315 else 1316 seq_puts(seq, ",heap"); 1317 #ifdef CONFIG_F2FS_FS_XATTR 1318 if (test_opt(sbi, XATTR_USER)) 1319 seq_puts(seq, ",user_xattr"); 1320 else 1321 seq_puts(seq, ",nouser_xattr"); 1322 if (test_opt(sbi, INLINE_XATTR)) 1323 seq_puts(seq, ",inline_xattr"); 1324 else 1325 seq_puts(seq, ",noinline_xattr"); 1326 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1327 seq_printf(seq, ",inline_xattr_size=%u", 1328 F2FS_OPTION(sbi).inline_xattr_size); 1329 #endif 1330 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1331 if (test_opt(sbi, POSIX_ACL)) 1332 seq_puts(seq, ",acl"); 1333 else 1334 seq_puts(seq, ",noacl"); 1335 #endif 1336 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1337 seq_puts(seq, ",disable_ext_identify"); 1338 if (test_opt(sbi, INLINE_DATA)) 1339 seq_puts(seq, ",inline_data"); 1340 else 1341 seq_puts(seq, ",noinline_data"); 1342 if (test_opt(sbi, INLINE_DENTRY)) 1343 seq_puts(seq, ",inline_dentry"); 1344 else 1345 seq_puts(seq, ",noinline_dentry"); 1346 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) 1347 seq_puts(seq, ",flush_merge"); 1348 if (test_opt(sbi, NOBARRIER)) 1349 seq_puts(seq, ",nobarrier"); 1350 if (test_opt(sbi, FASTBOOT)) 1351 seq_puts(seq, ",fastboot"); 1352 if (test_opt(sbi, EXTENT_CACHE)) 1353 seq_puts(seq, ",extent_cache"); 1354 else 1355 seq_puts(seq, ",noextent_cache"); 1356 if (test_opt(sbi, DATA_FLUSH)) 1357 seq_puts(seq, ",data_flush"); 1358 1359 seq_puts(seq, ",mode="); 1360 if (test_opt(sbi, ADAPTIVE)) 1361 seq_puts(seq, "adaptive"); 1362 else if (test_opt(sbi, LFS)) 1363 seq_puts(seq, "lfs"); 1364 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 1365 if (test_opt(sbi, RESERVE_ROOT)) 1366 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 1367 F2FS_OPTION(sbi).root_reserved_blocks, 1368 from_kuid_munged(&init_user_ns, 1369 F2FS_OPTION(sbi).s_resuid), 1370 from_kgid_munged(&init_user_ns, 1371 F2FS_OPTION(sbi).s_resgid)); 1372 if (F2FS_IO_SIZE_BITS(sbi)) 1373 seq_printf(seq, ",io_bits=%u", 1374 F2FS_OPTION(sbi).write_io_size_bits); 1375 #ifdef CONFIG_F2FS_FAULT_INJECTION 1376 if (test_opt(sbi, FAULT_INJECTION)) { 1377 seq_printf(seq, ",fault_injection=%u", 1378 F2FS_OPTION(sbi).fault_info.inject_rate); 1379 seq_printf(seq, ",fault_type=%u", 1380 F2FS_OPTION(sbi).fault_info.inject_type); 1381 } 1382 #endif 1383 #ifdef CONFIG_QUOTA 1384 if (test_opt(sbi, QUOTA)) 1385 seq_puts(seq, ",quota"); 1386 if (test_opt(sbi, USRQUOTA)) 1387 seq_puts(seq, ",usrquota"); 1388 if (test_opt(sbi, GRPQUOTA)) 1389 seq_puts(seq, ",grpquota"); 1390 if (test_opt(sbi, PRJQUOTA)) 1391 seq_puts(seq, ",prjquota"); 1392 #endif 1393 f2fs_show_quota_options(seq, sbi->sb); 1394 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) 1395 seq_printf(seq, ",whint_mode=%s", "user-based"); 1396 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) 1397 seq_printf(seq, ",whint_mode=%s", "fs-based"); 1398 #ifdef CONFIG_FS_ENCRYPTION 1399 if (F2FS_OPTION(sbi).test_dummy_encryption) 1400 seq_puts(seq, ",test_dummy_encryption"); 1401 #endif 1402 1403 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 1404 seq_printf(seq, ",alloc_mode=%s", "default"); 1405 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 1406 seq_printf(seq, ",alloc_mode=%s", "reuse"); 1407 1408 if (test_opt(sbi, DISABLE_CHECKPOINT)) 1409 seq_puts(seq, ",checkpoint=disable"); 1410 1411 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 1412 seq_printf(seq, ",fsync_mode=%s", "posix"); 1413 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 1414 seq_printf(seq, ",fsync_mode=%s", "strict"); 1415 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 1416 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 1417 return 0; 1418 } 1419 1420 static void default_options(struct f2fs_sb_info *sbi) 1421 { 1422 /* init some FS parameters */ 1423 F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE; 1424 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 1425 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; 1426 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 1427 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1428 F2FS_OPTION(sbi).test_dummy_encryption = false; 1429 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 1430 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 1431 1432 set_opt(sbi, BG_GC); 1433 set_opt(sbi, INLINE_XATTR); 1434 set_opt(sbi, INLINE_DATA); 1435 set_opt(sbi, INLINE_DENTRY); 1436 set_opt(sbi, EXTENT_CACHE); 1437 set_opt(sbi, NOHEAP); 1438 clear_opt(sbi, DISABLE_CHECKPOINT); 1439 sbi->sb->s_flags |= SB_LAZYTIME; 1440 set_opt(sbi, FLUSH_MERGE); 1441 set_opt(sbi, DISCARD); 1442 if (f2fs_sb_has_blkzoned(sbi)) 1443 set_opt_mode(sbi, F2FS_MOUNT_LFS); 1444 else 1445 set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); 1446 1447 #ifdef CONFIG_F2FS_FS_XATTR 1448 set_opt(sbi, XATTR_USER); 1449 #endif 1450 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1451 set_opt(sbi, POSIX_ACL); 1452 #endif 1453 1454 f2fs_build_fault_attr(sbi, 0, 0); 1455 } 1456 1457 #ifdef CONFIG_QUOTA 1458 static int f2fs_enable_quotas(struct super_block *sb); 1459 #endif 1460 1461 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 1462 { 1463 unsigned int s_flags = sbi->sb->s_flags; 1464 struct cp_control cpc; 1465 int err = 0; 1466 int ret; 1467 1468 if (s_flags & SB_RDONLY) { 1469 f2fs_msg(sbi->sb, KERN_ERR, 1470 "checkpoint=disable on readonly fs"); 1471 return -EINVAL; 1472 } 1473 sbi->sb->s_flags |= SB_ACTIVE; 1474 1475 f2fs_update_time(sbi, DISABLE_TIME); 1476 1477 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 1478 mutex_lock(&sbi->gc_mutex); 1479 err = f2fs_gc(sbi, true, false, NULL_SEGNO); 1480 if (err == -ENODATA) { 1481 err = 0; 1482 break; 1483 } 1484 if (err && err != -EAGAIN) 1485 break; 1486 } 1487 1488 ret = sync_filesystem(sbi->sb); 1489 if (ret || err) { 1490 err = ret ? ret: err; 1491 goto restore_flag; 1492 } 1493 1494 if (f2fs_disable_cp_again(sbi)) { 1495 err = -EAGAIN; 1496 goto restore_flag; 1497 } 1498 1499 mutex_lock(&sbi->gc_mutex); 1500 cpc.reason = CP_PAUSE; 1501 set_sbi_flag(sbi, SBI_CP_DISABLED); 1502 f2fs_write_checkpoint(sbi, &cpc); 1503 1504 sbi->unusable_block_count = 0; 1505 mutex_unlock(&sbi->gc_mutex); 1506 restore_flag: 1507 sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */ 1508 return err; 1509 } 1510 1511 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 1512 { 1513 mutex_lock(&sbi->gc_mutex); 1514 f2fs_dirty_to_prefree(sbi); 1515 1516 clear_sbi_flag(sbi, SBI_CP_DISABLED); 1517 set_sbi_flag(sbi, SBI_IS_DIRTY); 1518 mutex_unlock(&sbi->gc_mutex); 1519 1520 f2fs_sync_fs(sbi->sb, 1); 1521 } 1522 1523 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 1524 { 1525 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1526 struct f2fs_mount_info org_mount_opt; 1527 unsigned long old_sb_flags; 1528 int err; 1529 bool need_restart_gc = false; 1530 bool need_stop_gc = false; 1531 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); 1532 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT); 1533 bool checkpoint_changed; 1534 #ifdef CONFIG_QUOTA 1535 int i, j; 1536 #endif 1537 1538 /* 1539 * Save the old mount options in case we 1540 * need to restore them. 1541 */ 1542 org_mount_opt = sbi->mount_opt; 1543 old_sb_flags = sb->s_flags; 1544 1545 #ifdef CONFIG_QUOTA 1546 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 1547 for (i = 0; i < MAXQUOTAS; i++) { 1548 if (F2FS_OPTION(sbi).s_qf_names[i]) { 1549 org_mount_opt.s_qf_names[i] = 1550 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 1551 GFP_KERNEL); 1552 if (!org_mount_opt.s_qf_names[i]) { 1553 for (j = 0; j < i; j++) 1554 kvfree(org_mount_opt.s_qf_names[j]); 1555 return -ENOMEM; 1556 } 1557 } else { 1558 org_mount_opt.s_qf_names[i] = NULL; 1559 } 1560 } 1561 #endif 1562 1563 /* recover superblocks we couldn't write due to previous RO mount */ 1564 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 1565 err = f2fs_commit_super(sbi, false); 1566 f2fs_msg(sb, KERN_INFO, 1567 "Try to recover all the superblocks, ret: %d", err); 1568 if (!err) 1569 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 1570 } 1571 1572 default_options(sbi); 1573 1574 /* parse mount options */ 1575 err = parse_options(sb, data); 1576 if (err) 1577 goto restore_opts; 1578 checkpoint_changed = 1579 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT); 1580 1581 /* 1582 * Previous and new state of filesystem is RO, 1583 * so skip checking GC and FLUSH_MERGE conditions. 1584 */ 1585 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 1586 goto skip; 1587 1588 #ifdef CONFIG_QUOTA 1589 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 1590 err = dquot_suspend(sb, -1); 1591 if (err < 0) 1592 goto restore_opts; 1593 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 1594 /* dquot_resume needs RW */ 1595 sb->s_flags &= ~SB_RDONLY; 1596 if (sb_any_quota_suspended(sb)) { 1597 dquot_resume(sb, -1); 1598 } else if (f2fs_sb_has_quota_ino(sbi)) { 1599 err = f2fs_enable_quotas(sb); 1600 if (err) 1601 goto restore_opts; 1602 } 1603 } 1604 #endif 1605 /* disallow enable/disable extent_cache dynamically */ 1606 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { 1607 err = -EINVAL; 1608 f2fs_msg(sbi->sb, KERN_WARNING, 1609 "switch extent_cache option is not allowed"); 1610 goto restore_opts; 1611 } 1612 1613 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 1614 err = -EINVAL; 1615 f2fs_msg(sbi->sb, KERN_WARNING, 1616 "disabling checkpoint not compatible with read-only"); 1617 goto restore_opts; 1618 } 1619 1620 /* 1621 * We stop the GC thread if FS is mounted as RO 1622 * or if background_gc = off is passed in mount 1623 * option. Also sync the filesystem. 1624 */ 1625 if ((*flags & SB_RDONLY) || !test_opt(sbi, BG_GC)) { 1626 if (sbi->gc_thread) { 1627 f2fs_stop_gc_thread(sbi); 1628 need_restart_gc = true; 1629 } 1630 } else if (!sbi->gc_thread) { 1631 err = f2fs_start_gc_thread(sbi); 1632 if (err) 1633 goto restore_opts; 1634 need_stop_gc = true; 1635 } 1636 1637 if (*flags & SB_RDONLY || 1638 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) { 1639 writeback_inodes_sb(sb, WB_REASON_SYNC); 1640 sync_inodes_sb(sb); 1641 1642 set_sbi_flag(sbi, SBI_IS_DIRTY); 1643 set_sbi_flag(sbi, SBI_IS_CLOSE); 1644 f2fs_sync_fs(sb, 1); 1645 clear_sbi_flag(sbi, SBI_IS_CLOSE); 1646 } 1647 1648 if (checkpoint_changed) { 1649 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 1650 err = f2fs_disable_checkpoint(sbi); 1651 if (err) 1652 goto restore_gc; 1653 } else { 1654 f2fs_enable_checkpoint(sbi); 1655 } 1656 } 1657 1658 /* 1659 * We stop issue flush thread if FS is mounted as RO 1660 * or if flush_merge is not passed in mount option. 1661 */ 1662 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 1663 clear_opt(sbi, FLUSH_MERGE); 1664 f2fs_destroy_flush_cmd_control(sbi, false); 1665 } else { 1666 err = f2fs_create_flush_cmd_control(sbi); 1667 if (err) 1668 goto restore_gc; 1669 } 1670 skip: 1671 #ifdef CONFIG_QUOTA 1672 /* Release old quota file names */ 1673 for (i = 0; i < MAXQUOTAS; i++) 1674 kvfree(org_mount_opt.s_qf_names[i]); 1675 #endif 1676 /* Update the POSIXACL Flag */ 1677 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 1678 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 1679 1680 limit_reserve_root(sbi); 1681 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 1682 return 0; 1683 restore_gc: 1684 if (need_restart_gc) { 1685 if (f2fs_start_gc_thread(sbi)) 1686 f2fs_msg(sbi->sb, KERN_WARNING, 1687 "background gc thread has stopped"); 1688 } else if (need_stop_gc) { 1689 f2fs_stop_gc_thread(sbi); 1690 } 1691 restore_opts: 1692 #ifdef CONFIG_QUOTA 1693 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 1694 for (i = 0; i < MAXQUOTAS; i++) { 1695 kvfree(F2FS_OPTION(sbi).s_qf_names[i]); 1696 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 1697 } 1698 #endif 1699 sbi->mount_opt = org_mount_opt; 1700 sb->s_flags = old_sb_flags; 1701 return err; 1702 } 1703 1704 #ifdef CONFIG_QUOTA 1705 /* Read data from quotafile */ 1706 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 1707 size_t len, loff_t off) 1708 { 1709 struct inode *inode = sb_dqopt(sb)->files[type]; 1710 struct address_space *mapping = inode->i_mapping; 1711 block_t blkidx = F2FS_BYTES_TO_BLK(off); 1712 int offset = off & (sb->s_blocksize - 1); 1713 int tocopy; 1714 size_t toread; 1715 loff_t i_size = i_size_read(inode); 1716 struct page *page; 1717 char *kaddr; 1718 1719 if (off > i_size) 1720 return 0; 1721 1722 if (off + len > i_size) 1723 len = i_size - off; 1724 toread = len; 1725 while (toread > 0) { 1726 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 1727 repeat: 1728 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 1729 if (IS_ERR(page)) { 1730 if (PTR_ERR(page) == -ENOMEM) { 1731 congestion_wait(BLK_RW_ASYNC, HZ/50); 1732 goto repeat; 1733 } 1734 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 1735 return PTR_ERR(page); 1736 } 1737 1738 lock_page(page); 1739 1740 if (unlikely(page->mapping != mapping)) { 1741 f2fs_put_page(page, 1); 1742 goto repeat; 1743 } 1744 if (unlikely(!PageUptodate(page))) { 1745 f2fs_put_page(page, 1); 1746 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 1747 return -EIO; 1748 } 1749 1750 kaddr = kmap_atomic(page); 1751 memcpy(data, kaddr + offset, tocopy); 1752 kunmap_atomic(kaddr); 1753 f2fs_put_page(page, 1); 1754 1755 offset = 0; 1756 toread -= tocopy; 1757 data += tocopy; 1758 blkidx++; 1759 } 1760 return len; 1761 } 1762 1763 /* Write to quotafile */ 1764 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 1765 const char *data, size_t len, loff_t off) 1766 { 1767 struct inode *inode = sb_dqopt(sb)->files[type]; 1768 struct address_space *mapping = inode->i_mapping; 1769 const struct address_space_operations *a_ops = mapping->a_ops; 1770 int offset = off & (sb->s_blocksize - 1); 1771 size_t towrite = len; 1772 struct page *page; 1773 char *kaddr; 1774 int err = 0; 1775 int tocopy; 1776 1777 while (towrite > 0) { 1778 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 1779 towrite); 1780 retry: 1781 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0, 1782 &page, NULL); 1783 if (unlikely(err)) { 1784 if (err == -ENOMEM) { 1785 congestion_wait(BLK_RW_ASYNC, HZ/50); 1786 goto retry; 1787 } 1788 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 1789 break; 1790 } 1791 1792 kaddr = kmap_atomic(page); 1793 memcpy(kaddr + offset, data, tocopy); 1794 kunmap_atomic(kaddr); 1795 flush_dcache_page(page); 1796 1797 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 1798 page, NULL); 1799 offset = 0; 1800 towrite -= tocopy; 1801 off += tocopy; 1802 data += tocopy; 1803 cond_resched(); 1804 } 1805 1806 if (len == towrite) 1807 return err; 1808 inode->i_mtime = inode->i_ctime = current_time(inode); 1809 f2fs_mark_inode_dirty_sync(inode, false); 1810 return len - towrite; 1811 } 1812 1813 static struct dquot **f2fs_get_dquots(struct inode *inode) 1814 { 1815 return F2FS_I(inode)->i_dquot; 1816 } 1817 1818 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 1819 { 1820 return &F2FS_I(inode)->i_reserved_quota; 1821 } 1822 1823 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 1824 { 1825 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 1826 f2fs_msg(sbi->sb, KERN_ERR, 1827 "quota sysfile may be corrupted, skip loading it"); 1828 return 0; 1829 } 1830 1831 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 1832 F2FS_OPTION(sbi).s_jquota_fmt, type); 1833 } 1834 1835 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 1836 { 1837 int enabled = 0; 1838 int i, err; 1839 1840 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 1841 err = f2fs_enable_quotas(sbi->sb); 1842 if (err) { 1843 f2fs_msg(sbi->sb, KERN_ERR, 1844 "Cannot turn on quota_ino: %d", err); 1845 return 0; 1846 } 1847 return 1; 1848 } 1849 1850 for (i = 0; i < MAXQUOTAS; i++) { 1851 if (F2FS_OPTION(sbi).s_qf_names[i]) { 1852 err = f2fs_quota_on_mount(sbi, i); 1853 if (!err) { 1854 enabled = 1; 1855 continue; 1856 } 1857 f2fs_msg(sbi->sb, KERN_ERR, 1858 "Cannot turn on quotas: %d on %d", err, i); 1859 } 1860 } 1861 return enabled; 1862 } 1863 1864 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 1865 unsigned int flags) 1866 { 1867 struct inode *qf_inode; 1868 unsigned long qf_inum; 1869 int err; 1870 1871 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 1872 1873 qf_inum = f2fs_qf_ino(sb, type); 1874 if (!qf_inum) 1875 return -EPERM; 1876 1877 qf_inode = f2fs_iget(sb, qf_inum); 1878 if (IS_ERR(qf_inode)) { 1879 f2fs_msg(sb, KERN_ERR, 1880 "Bad quota inode %u:%lu", type, qf_inum); 1881 return PTR_ERR(qf_inode); 1882 } 1883 1884 /* Don't account quota for quota files to avoid recursion */ 1885 qf_inode->i_flags |= S_NOQUOTA; 1886 err = dquot_enable(qf_inode, type, format_id, flags); 1887 iput(qf_inode); 1888 return err; 1889 } 1890 1891 static int f2fs_enable_quotas(struct super_block *sb) 1892 { 1893 int type, err = 0; 1894 unsigned long qf_inum; 1895 bool quota_mopt[MAXQUOTAS] = { 1896 test_opt(F2FS_SB(sb), USRQUOTA), 1897 test_opt(F2FS_SB(sb), GRPQUOTA), 1898 test_opt(F2FS_SB(sb), PRJQUOTA), 1899 }; 1900 1901 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 1902 f2fs_msg(sb, KERN_ERR, 1903 "quota file may be corrupted, skip loading it"); 1904 return 0; 1905 } 1906 1907 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 1908 1909 for (type = 0; type < MAXQUOTAS; type++) { 1910 qf_inum = f2fs_qf_ino(sb, type); 1911 if (qf_inum) { 1912 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 1913 DQUOT_USAGE_ENABLED | 1914 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 1915 if (err) { 1916 f2fs_msg(sb, KERN_ERR, 1917 "Failed to enable quota tracking " 1918 "(type=%d, err=%d). Please run " 1919 "fsck to fix.", type, err); 1920 for (type--; type >= 0; type--) 1921 dquot_quota_off(sb, type); 1922 set_sbi_flag(F2FS_SB(sb), 1923 SBI_QUOTA_NEED_REPAIR); 1924 return err; 1925 } 1926 } 1927 } 1928 return 0; 1929 } 1930 1931 int f2fs_quota_sync(struct super_block *sb, int type) 1932 { 1933 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1934 struct quota_info *dqopt = sb_dqopt(sb); 1935 int cnt; 1936 int ret; 1937 1938 ret = dquot_writeback_dquots(sb, type); 1939 if (ret) 1940 goto out; 1941 1942 /* 1943 * Now when everything is written we can discard the pagecache so 1944 * that userspace sees the changes. 1945 */ 1946 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 1947 struct address_space *mapping; 1948 1949 if (type != -1 && cnt != type) 1950 continue; 1951 if (!sb_has_quota_active(sb, cnt)) 1952 continue; 1953 1954 mapping = dqopt->files[cnt]->i_mapping; 1955 1956 ret = filemap_fdatawrite(mapping); 1957 if (ret) 1958 goto out; 1959 1960 /* if we are using journalled quota */ 1961 if (is_journalled_quota(sbi)) 1962 continue; 1963 1964 ret = filemap_fdatawait(mapping); 1965 if (ret) 1966 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 1967 1968 inode_lock(dqopt->files[cnt]); 1969 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0); 1970 inode_unlock(dqopt->files[cnt]); 1971 } 1972 out: 1973 if (ret) 1974 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 1975 return ret; 1976 } 1977 1978 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 1979 const struct path *path) 1980 { 1981 struct inode *inode; 1982 int err; 1983 1984 err = f2fs_quota_sync(sb, type); 1985 if (err) 1986 return err; 1987 1988 err = dquot_quota_on(sb, type, format_id, path); 1989 if (err) 1990 return err; 1991 1992 inode = d_inode(path->dentry); 1993 1994 inode_lock(inode); 1995 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL; 1996 f2fs_set_inode_flags(inode); 1997 inode_unlock(inode); 1998 f2fs_mark_inode_dirty_sync(inode, false); 1999 2000 return 0; 2001 } 2002 2003 static int f2fs_quota_off(struct super_block *sb, int type) 2004 { 2005 struct inode *inode = sb_dqopt(sb)->files[type]; 2006 int err; 2007 2008 if (!inode || !igrab(inode)) 2009 return dquot_quota_off(sb, type); 2010 2011 err = f2fs_quota_sync(sb, type); 2012 if (err) 2013 goto out_put; 2014 2015 err = dquot_quota_off(sb, type); 2016 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2017 goto out_put; 2018 2019 inode_lock(inode); 2020 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL); 2021 f2fs_set_inode_flags(inode); 2022 inode_unlock(inode); 2023 f2fs_mark_inode_dirty_sync(inode, false); 2024 out_put: 2025 iput(inode); 2026 return err; 2027 } 2028 2029 void f2fs_quota_off_umount(struct super_block *sb) 2030 { 2031 int type; 2032 int err; 2033 2034 for (type = 0; type < MAXQUOTAS; type++) { 2035 err = f2fs_quota_off(sb, type); 2036 if (err) { 2037 int ret = dquot_quota_off(sb, type); 2038 2039 f2fs_msg(sb, KERN_ERR, 2040 "Fail to turn off disk quota " 2041 "(type: %d, err: %d, ret:%d), Please " 2042 "run fsck to fix it.", type, err, ret); 2043 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2044 } 2045 } 2046 /* 2047 * In case of checkpoint=disable, we must flush quota blocks. 2048 * This can cause NULL exception for node_inode in end_io, since 2049 * put_super already dropped it. 2050 */ 2051 sync_filesystem(sb); 2052 } 2053 2054 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 2055 { 2056 struct quota_info *dqopt = sb_dqopt(sb); 2057 int type; 2058 2059 for (type = 0; type < MAXQUOTAS; type++) { 2060 if (!dqopt->files[type]) 2061 continue; 2062 f2fs_inode_synced(dqopt->files[type]); 2063 } 2064 } 2065 2066 static int f2fs_dquot_commit(struct dquot *dquot) 2067 { 2068 int ret; 2069 2070 ret = dquot_commit(dquot); 2071 if (ret < 0) 2072 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR); 2073 return ret; 2074 } 2075 2076 static int f2fs_dquot_acquire(struct dquot *dquot) 2077 { 2078 int ret; 2079 2080 ret = dquot_acquire(dquot); 2081 if (ret < 0) 2082 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR); 2083 2084 return ret; 2085 } 2086 2087 static int f2fs_dquot_release(struct dquot *dquot) 2088 { 2089 int ret; 2090 2091 ret = dquot_release(dquot); 2092 if (ret < 0) 2093 set_sbi_flag(F2FS_SB(dquot->dq_sb), SBI_QUOTA_NEED_REPAIR); 2094 return ret; 2095 } 2096 2097 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 2098 { 2099 struct super_block *sb = dquot->dq_sb; 2100 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2101 int ret; 2102 2103 ret = dquot_mark_dquot_dirty(dquot); 2104 2105 /* if we are using journalled quota */ 2106 if (is_journalled_quota(sbi)) 2107 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 2108 2109 return ret; 2110 } 2111 2112 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 2113 { 2114 int ret; 2115 2116 ret = dquot_commit_info(sb, type); 2117 if (ret < 0) 2118 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2119 return ret; 2120 } 2121 2122 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 2123 { 2124 *projid = F2FS_I(inode)->i_projid; 2125 return 0; 2126 } 2127 2128 static const struct dquot_operations f2fs_quota_operations = { 2129 .get_reserved_space = f2fs_get_reserved_space, 2130 .write_dquot = f2fs_dquot_commit, 2131 .acquire_dquot = f2fs_dquot_acquire, 2132 .release_dquot = f2fs_dquot_release, 2133 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 2134 .write_info = f2fs_dquot_commit_info, 2135 .alloc_dquot = dquot_alloc, 2136 .destroy_dquot = dquot_destroy, 2137 .get_projid = f2fs_get_projid, 2138 .get_next_id = dquot_get_next_id, 2139 }; 2140 2141 static const struct quotactl_ops f2fs_quotactl_ops = { 2142 .quota_on = f2fs_quota_on, 2143 .quota_off = f2fs_quota_off, 2144 .quota_sync = f2fs_quota_sync, 2145 .get_state = dquot_get_state, 2146 .set_info = dquot_set_dqinfo, 2147 .get_dqblk = dquot_get_dqblk, 2148 .set_dqblk = dquot_set_dqblk, 2149 .get_nextdqblk = dquot_get_next_dqblk, 2150 }; 2151 #else 2152 int f2fs_quota_sync(struct super_block *sb, int type) 2153 { 2154 return 0; 2155 } 2156 2157 void f2fs_quota_off_umount(struct super_block *sb) 2158 { 2159 } 2160 #endif 2161 2162 static const struct super_operations f2fs_sops = { 2163 .alloc_inode = f2fs_alloc_inode, 2164 .free_inode = f2fs_free_inode, 2165 .drop_inode = f2fs_drop_inode, 2166 .write_inode = f2fs_write_inode, 2167 .dirty_inode = f2fs_dirty_inode, 2168 .show_options = f2fs_show_options, 2169 #ifdef CONFIG_QUOTA 2170 .quota_read = f2fs_quota_read, 2171 .quota_write = f2fs_quota_write, 2172 .get_dquots = f2fs_get_dquots, 2173 #endif 2174 .evict_inode = f2fs_evict_inode, 2175 .put_super = f2fs_put_super, 2176 .sync_fs = f2fs_sync_fs, 2177 .freeze_fs = f2fs_freeze, 2178 .unfreeze_fs = f2fs_unfreeze, 2179 .statfs = f2fs_statfs, 2180 .remount_fs = f2fs_remount, 2181 }; 2182 2183 #ifdef CONFIG_FS_ENCRYPTION 2184 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 2185 { 2186 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 2187 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 2188 ctx, len, NULL); 2189 } 2190 2191 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 2192 void *fs_data) 2193 { 2194 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2195 2196 /* 2197 * Encrypting the root directory is not allowed because fsck 2198 * expects lost+found directory to exist and remain unencrypted 2199 * if LOST_FOUND feature is enabled. 2200 * 2201 */ 2202 if (f2fs_sb_has_lost_found(sbi) && 2203 inode->i_ino == F2FS_ROOT_INO(sbi)) 2204 return -EPERM; 2205 2206 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 2207 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 2208 ctx, len, fs_data, XATTR_CREATE); 2209 } 2210 2211 static bool f2fs_dummy_context(struct inode *inode) 2212 { 2213 return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode)); 2214 } 2215 2216 static const struct fscrypt_operations f2fs_cryptops = { 2217 .key_prefix = "f2fs:", 2218 .get_context = f2fs_get_context, 2219 .set_context = f2fs_set_context, 2220 .dummy_context = f2fs_dummy_context, 2221 .empty_dir = f2fs_empty_dir, 2222 .max_namelen = F2FS_NAME_LEN, 2223 }; 2224 #endif 2225 2226 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 2227 u64 ino, u32 generation) 2228 { 2229 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2230 struct inode *inode; 2231 2232 if (f2fs_check_nid_range(sbi, ino)) 2233 return ERR_PTR(-ESTALE); 2234 2235 /* 2236 * f2fs_iget isn't quite right if the inode is currently unallocated! 2237 * However f2fs_iget currently does appropriate checks to handle stale 2238 * inodes so everything is OK. 2239 */ 2240 inode = f2fs_iget(sb, ino); 2241 if (IS_ERR(inode)) 2242 return ERR_CAST(inode); 2243 if (unlikely(generation && inode->i_generation != generation)) { 2244 /* we didn't find the right inode.. */ 2245 iput(inode); 2246 return ERR_PTR(-ESTALE); 2247 } 2248 return inode; 2249 } 2250 2251 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 2252 int fh_len, int fh_type) 2253 { 2254 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 2255 f2fs_nfs_get_inode); 2256 } 2257 2258 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 2259 int fh_len, int fh_type) 2260 { 2261 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 2262 f2fs_nfs_get_inode); 2263 } 2264 2265 static const struct export_operations f2fs_export_ops = { 2266 .fh_to_dentry = f2fs_fh_to_dentry, 2267 .fh_to_parent = f2fs_fh_to_parent, 2268 .get_parent = f2fs_get_parent, 2269 }; 2270 2271 static loff_t max_file_blocks(void) 2272 { 2273 loff_t result = 0; 2274 loff_t leaf_count = ADDRS_PER_BLOCK; 2275 2276 /* 2277 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 2278 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 2279 * space in inode.i_addr, it will be more safe to reassign 2280 * result as zero. 2281 */ 2282 2283 /* two direct node blocks */ 2284 result += (leaf_count * 2); 2285 2286 /* two indirect node blocks */ 2287 leaf_count *= NIDS_PER_BLOCK; 2288 result += (leaf_count * 2); 2289 2290 /* one double indirect node block */ 2291 leaf_count *= NIDS_PER_BLOCK; 2292 result += leaf_count; 2293 2294 return result; 2295 } 2296 2297 static int __f2fs_commit_super(struct buffer_head *bh, 2298 struct f2fs_super_block *super) 2299 { 2300 lock_buffer(bh); 2301 if (super) 2302 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 2303 set_buffer_dirty(bh); 2304 unlock_buffer(bh); 2305 2306 /* it's rare case, we can do fua all the time */ 2307 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 2308 } 2309 2310 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 2311 struct buffer_head *bh) 2312 { 2313 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 2314 (bh->b_data + F2FS_SUPER_OFFSET); 2315 struct super_block *sb = sbi->sb; 2316 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 2317 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 2318 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 2319 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 2320 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 2321 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 2322 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 2323 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 2324 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 2325 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 2326 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 2327 u32 segment_count = le32_to_cpu(raw_super->segment_count); 2328 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 2329 u64 main_end_blkaddr = main_blkaddr + 2330 (segment_count_main << log_blocks_per_seg); 2331 u64 seg_end_blkaddr = segment0_blkaddr + 2332 (segment_count << log_blocks_per_seg); 2333 2334 if (segment0_blkaddr != cp_blkaddr) { 2335 f2fs_msg(sb, KERN_INFO, 2336 "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 2337 segment0_blkaddr, cp_blkaddr); 2338 return true; 2339 } 2340 2341 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 2342 sit_blkaddr) { 2343 f2fs_msg(sb, KERN_INFO, 2344 "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 2345 cp_blkaddr, sit_blkaddr, 2346 segment_count_ckpt << log_blocks_per_seg); 2347 return true; 2348 } 2349 2350 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 2351 nat_blkaddr) { 2352 f2fs_msg(sb, KERN_INFO, 2353 "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 2354 sit_blkaddr, nat_blkaddr, 2355 segment_count_sit << log_blocks_per_seg); 2356 return true; 2357 } 2358 2359 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 2360 ssa_blkaddr) { 2361 f2fs_msg(sb, KERN_INFO, 2362 "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 2363 nat_blkaddr, ssa_blkaddr, 2364 segment_count_nat << log_blocks_per_seg); 2365 return true; 2366 } 2367 2368 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 2369 main_blkaddr) { 2370 f2fs_msg(sb, KERN_INFO, 2371 "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 2372 ssa_blkaddr, main_blkaddr, 2373 segment_count_ssa << log_blocks_per_seg); 2374 return true; 2375 } 2376 2377 if (main_end_blkaddr > seg_end_blkaddr) { 2378 f2fs_msg(sb, KERN_INFO, 2379 "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)", 2380 main_blkaddr, 2381 segment0_blkaddr + 2382 (segment_count << log_blocks_per_seg), 2383 segment_count_main << log_blocks_per_seg); 2384 return true; 2385 } else if (main_end_blkaddr < seg_end_blkaddr) { 2386 int err = 0; 2387 char *res; 2388 2389 /* fix in-memory information all the time */ 2390 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 2391 segment0_blkaddr) >> log_blocks_per_seg); 2392 2393 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { 2394 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2395 res = "internally"; 2396 } else { 2397 err = __f2fs_commit_super(bh, NULL); 2398 res = err ? "failed" : "done"; 2399 } 2400 f2fs_msg(sb, KERN_INFO, 2401 "Fix alignment : %s, start(%u) end(%u) block(%u)", 2402 res, main_blkaddr, 2403 segment0_blkaddr + 2404 (segment_count << log_blocks_per_seg), 2405 segment_count_main << log_blocks_per_seg); 2406 if (err) 2407 return true; 2408 } 2409 return false; 2410 } 2411 2412 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 2413 struct buffer_head *bh) 2414 { 2415 block_t segment_count, segs_per_sec, secs_per_zone; 2416 block_t total_sections, blocks_per_seg; 2417 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 2418 (bh->b_data + F2FS_SUPER_OFFSET); 2419 struct super_block *sb = sbi->sb; 2420 unsigned int blocksize; 2421 size_t crc_offset = 0; 2422 __u32 crc = 0; 2423 2424 /* Check checksum_offset and crc in superblock */ 2425 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 2426 crc_offset = le32_to_cpu(raw_super->checksum_offset); 2427 if (crc_offset != 2428 offsetof(struct f2fs_super_block, crc)) { 2429 f2fs_msg(sb, KERN_INFO, 2430 "Invalid SB checksum offset: %zu", 2431 crc_offset); 2432 return 1; 2433 } 2434 crc = le32_to_cpu(raw_super->crc); 2435 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 2436 f2fs_msg(sb, KERN_INFO, 2437 "Invalid SB checksum value: %u", crc); 2438 return 1; 2439 } 2440 } 2441 2442 if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) { 2443 f2fs_msg(sb, KERN_INFO, 2444 "Magic Mismatch, valid(0x%x) - read(0x%x)", 2445 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 2446 return 1; 2447 } 2448 2449 /* Currently, support only 4KB page cache size */ 2450 if (F2FS_BLKSIZE != PAGE_SIZE) { 2451 f2fs_msg(sb, KERN_INFO, 2452 "Invalid page_cache_size (%lu), supports only 4KB\n", 2453 PAGE_SIZE); 2454 return 1; 2455 } 2456 2457 /* Currently, support only 4KB block size */ 2458 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize); 2459 if (blocksize != F2FS_BLKSIZE) { 2460 f2fs_msg(sb, KERN_INFO, 2461 "Invalid blocksize (%u), supports only 4KB\n", 2462 blocksize); 2463 return 1; 2464 } 2465 2466 /* check log blocks per segment */ 2467 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 2468 f2fs_msg(sb, KERN_INFO, 2469 "Invalid log blocks per segment (%u)\n", 2470 le32_to_cpu(raw_super->log_blocks_per_seg)); 2471 return 1; 2472 } 2473 2474 /* Currently, support 512/1024/2048/4096 bytes sector size */ 2475 if (le32_to_cpu(raw_super->log_sectorsize) > 2476 F2FS_MAX_LOG_SECTOR_SIZE || 2477 le32_to_cpu(raw_super->log_sectorsize) < 2478 F2FS_MIN_LOG_SECTOR_SIZE) { 2479 f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", 2480 le32_to_cpu(raw_super->log_sectorsize)); 2481 return 1; 2482 } 2483 if (le32_to_cpu(raw_super->log_sectors_per_block) + 2484 le32_to_cpu(raw_super->log_sectorsize) != 2485 F2FS_MAX_LOG_SECTOR_SIZE) { 2486 f2fs_msg(sb, KERN_INFO, 2487 "Invalid log sectors per block(%u) log sectorsize(%u)", 2488 le32_to_cpu(raw_super->log_sectors_per_block), 2489 le32_to_cpu(raw_super->log_sectorsize)); 2490 return 1; 2491 } 2492 2493 segment_count = le32_to_cpu(raw_super->segment_count); 2494 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 2495 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 2496 total_sections = le32_to_cpu(raw_super->section_count); 2497 2498 /* blocks_per_seg should be 512, given the above check */ 2499 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg); 2500 2501 if (segment_count > F2FS_MAX_SEGMENT || 2502 segment_count < F2FS_MIN_SEGMENTS) { 2503 f2fs_msg(sb, KERN_INFO, 2504 "Invalid segment count (%u)", 2505 segment_count); 2506 return 1; 2507 } 2508 2509 if (total_sections > segment_count || 2510 total_sections < F2FS_MIN_SEGMENTS || 2511 segs_per_sec > segment_count || !segs_per_sec) { 2512 f2fs_msg(sb, KERN_INFO, 2513 "Invalid segment/section count (%u, %u x %u)", 2514 segment_count, total_sections, segs_per_sec); 2515 return 1; 2516 } 2517 2518 if ((segment_count / segs_per_sec) < total_sections) { 2519 f2fs_msg(sb, KERN_INFO, 2520 "Small segment_count (%u < %u * %u)", 2521 segment_count, segs_per_sec, total_sections); 2522 return 1; 2523 } 2524 2525 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 2526 f2fs_msg(sb, KERN_INFO, 2527 "Wrong segment_count / block_count (%u > %llu)", 2528 segment_count, le64_to_cpu(raw_super->block_count)); 2529 return 1; 2530 } 2531 2532 if (secs_per_zone > total_sections || !secs_per_zone) { 2533 f2fs_msg(sb, KERN_INFO, 2534 "Wrong secs_per_zone / total_sections (%u, %u)", 2535 secs_per_zone, total_sections); 2536 return 1; 2537 } 2538 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 2539 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 2540 (le32_to_cpu(raw_super->extension_count) + 2541 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 2542 f2fs_msg(sb, KERN_INFO, 2543 "Corrupted extension count (%u + %u > %u)", 2544 le32_to_cpu(raw_super->extension_count), 2545 raw_super->hot_ext_count, 2546 F2FS_MAX_EXTENSION); 2547 return 1; 2548 } 2549 2550 if (le32_to_cpu(raw_super->cp_payload) > 2551 (blocks_per_seg - F2FS_CP_PACKS)) { 2552 f2fs_msg(sb, KERN_INFO, 2553 "Insane cp_payload (%u > %u)", 2554 le32_to_cpu(raw_super->cp_payload), 2555 blocks_per_seg - F2FS_CP_PACKS); 2556 return 1; 2557 } 2558 2559 /* check reserved ino info */ 2560 if (le32_to_cpu(raw_super->node_ino) != 1 || 2561 le32_to_cpu(raw_super->meta_ino) != 2 || 2562 le32_to_cpu(raw_super->root_ino) != 3) { 2563 f2fs_msg(sb, KERN_INFO, 2564 "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 2565 le32_to_cpu(raw_super->node_ino), 2566 le32_to_cpu(raw_super->meta_ino), 2567 le32_to_cpu(raw_super->root_ino)); 2568 return 1; 2569 } 2570 2571 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 2572 if (sanity_check_area_boundary(sbi, bh)) 2573 return 1; 2574 2575 return 0; 2576 } 2577 2578 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 2579 { 2580 unsigned int total, fsmeta; 2581 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 2582 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 2583 unsigned int ovp_segments, reserved_segments; 2584 unsigned int main_segs, blocks_per_seg; 2585 unsigned int sit_segs, nat_segs; 2586 unsigned int sit_bitmap_size, nat_bitmap_size; 2587 unsigned int log_blocks_per_seg; 2588 unsigned int segment_count_main; 2589 unsigned int cp_pack_start_sum, cp_payload; 2590 block_t user_block_count; 2591 int i, j; 2592 2593 total = le32_to_cpu(raw_super->segment_count); 2594 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 2595 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 2596 fsmeta += sit_segs; 2597 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 2598 fsmeta += nat_segs; 2599 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 2600 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 2601 2602 if (unlikely(fsmeta >= total)) 2603 return 1; 2604 2605 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 2606 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 2607 2608 if (unlikely(fsmeta < F2FS_MIN_SEGMENTS || 2609 ovp_segments == 0 || reserved_segments == 0)) { 2610 f2fs_msg(sbi->sb, KERN_ERR, 2611 "Wrong layout: check mkfs.f2fs version"); 2612 return 1; 2613 } 2614 2615 user_block_count = le64_to_cpu(ckpt->user_block_count); 2616 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 2617 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 2618 if (!user_block_count || user_block_count >= 2619 segment_count_main << log_blocks_per_seg) { 2620 f2fs_msg(sbi->sb, KERN_ERR, 2621 "Wrong user_block_count: %u", user_block_count); 2622 return 1; 2623 } 2624 2625 main_segs = le32_to_cpu(raw_super->segment_count_main); 2626 blocks_per_seg = sbi->blocks_per_seg; 2627 2628 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 2629 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 2630 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 2631 return 1; 2632 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 2633 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 2634 le32_to_cpu(ckpt->cur_node_segno[j])) { 2635 f2fs_msg(sbi->sb, KERN_ERR, 2636 "Node segment (%u, %u) has the same " 2637 "segno: %u", i, j, 2638 le32_to_cpu(ckpt->cur_node_segno[i])); 2639 return 1; 2640 } 2641 } 2642 } 2643 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 2644 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 2645 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 2646 return 1; 2647 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 2648 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 2649 le32_to_cpu(ckpt->cur_data_segno[j])) { 2650 f2fs_msg(sbi->sb, KERN_ERR, 2651 "Data segment (%u, %u) has the same " 2652 "segno: %u", i, j, 2653 le32_to_cpu(ckpt->cur_data_segno[i])); 2654 return 1; 2655 } 2656 } 2657 } 2658 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 2659 for (j = i; j < NR_CURSEG_DATA_TYPE; j++) { 2660 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 2661 le32_to_cpu(ckpt->cur_data_segno[j])) { 2662 f2fs_msg(sbi->sb, KERN_ERR, 2663 "Data segment (%u) and Data segment (%u)" 2664 " has the same segno: %u", i, j, 2665 le32_to_cpu(ckpt->cur_node_segno[i])); 2666 return 1; 2667 } 2668 } 2669 } 2670 2671 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 2672 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 2673 2674 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 2675 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 2676 f2fs_msg(sbi->sb, KERN_ERR, 2677 "Wrong bitmap size: sit: %u, nat:%u", 2678 sit_bitmap_size, nat_bitmap_size); 2679 return 1; 2680 } 2681 2682 cp_pack_start_sum = __start_sum_addr(sbi); 2683 cp_payload = __cp_payload(sbi); 2684 if (cp_pack_start_sum < cp_payload + 1 || 2685 cp_pack_start_sum > blocks_per_seg - 1 - 2686 NR_CURSEG_TYPE) { 2687 f2fs_msg(sbi->sb, KERN_ERR, 2688 "Wrong cp_pack_start_sum: %u", 2689 cp_pack_start_sum); 2690 return 1; 2691 } 2692 2693 if (unlikely(f2fs_cp_error(sbi))) { 2694 f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); 2695 return 1; 2696 } 2697 return 0; 2698 } 2699 2700 static void init_sb_info(struct f2fs_sb_info *sbi) 2701 { 2702 struct f2fs_super_block *raw_super = sbi->raw_super; 2703 int i; 2704 2705 sbi->log_sectors_per_block = 2706 le32_to_cpu(raw_super->log_sectors_per_block); 2707 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 2708 sbi->blocksize = 1 << sbi->log_blocksize; 2709 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 2710 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; 2711 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 2712 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 2713 sbi->total_sections = le32_to_cpu(raw_super->section_count); 2714 sbi->total_node_count = 2715 (le32_to_cpu(raw_super->segment_count_nat) / 2) 2716 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; 2717 sbi->root_ino_num = le32_to_cpu(raw_super->root_ino); 2718 sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); 2719 sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); 2720 sbi->cur_victim_sec = NULL_SECNO; 2721 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 2722 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 2723 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 2724 sbi->migration_granularity = sbi->segs_per_sec; 2725 2726 sbi->dir_level = DEF_DIR_LEVEL; 2727 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 2728 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 2729 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 2730 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 2731 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 2732 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 2733 DEF_UMOUNT_DISCARD_TIMEOUT; 2734 clear_sbi_flag(sbi, SBI_NEED_FSCK); 2735 2736 for (i = 0; i < NR_COUNT_TYPE; i++) 2737 atomic_set(&sbi->nr_pages[i], 0); 2738 2739 for (i = 0; i < META; i++) 2740 atomic_set(&sbi->wb_sync_req[i], 0); 2741 2742 INIT_LIST_HEAD(&sbi->s_list); 2743 mutex_init(&sbi->umount_mutex); 2744 init_rwsem(&sbi->io_order_lock); 2745 spin_lock_init(&sbi->cp_lock); 2746 2747 sbi->dirty_device = 0; 2748 spin_lock_init(&sbi->dev_lock); 2749 2750 init_rwsem(&sbi->sb_lock); 2751 } 2752 2753 static int init_percpu_info(struct f2fs_sb_info *sbi) 2754 { 2755 int err; 2756 2757 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 2758 if (err) 2759 return err; 2760 2761 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 2762 GFP_KERNEL); 2763 if (err) 2764 percpu_counter_destroy(&sbi->alloc_valid_block_count); 2765 2766 return err; 2767 } 2768 2769 #ifdef CONFIG_BLK_DEV_ZONED 2770 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 2771 { 2772 struct block_device *bdev = FDEV(devi).bdev; 2773 sector_t nr_sectors = bdev->bd_part->nr_sects; 2774 sector_t sector = 0; 2775 struct blk_zone *zones; 2776 unsigned int i, nr_zones; 2777 unsigned int n = 0; 2778 int err = -EIO; 2779 2780 if (!f2fs_sb_has_blkzoned(sbi)) 2781 return 0; 2782 2783 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 2784 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev))) 2785 return -EINVAL; 2786 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)); 2787 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz != 2788 __ilog2_u32(sbi->blocks_per_blkz)) 2789 return -EINVAL; 2790 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz); 2791 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >> 2792 sbi->log_blocks_per_blkz; 2793 if (nr_sectors & (bdev_zone_sectors(bdev) - 1)) 2794 FDEV(devi).nr_blkz++; 2795 2796 FDEV(devi).blkz_type = f2fs_kmalloc(sbi, FDEV(devi).nr_blkz, 2797 GFP_KERNEL); 2798 if (!FDEV(devi).blkz_type) 2799 return -ENOMEM; 2800 2801 #define F2FS_REPORT_NR_ZONES 4096 2802 2803 zones = f2fs_kzalloc(sbi, 2804 array_size(F2FS_REPORT_NR_ZONES, 2805 sizeof(struct blk_zone)), 2806 GFP_KERNEL); 2807 if (!zones) 2808 return -ENOMEM; 2809 2810 /* Get block zones type */ 2811 while (zones && sector < nr_sectors) { 2812 2813 nr_zones = F2FS_REPORT_NR_ZONES; 2814 err = blkdev_report_zones(bdev, sector, 2815 zones, &nr_zones, 2816 GFP_KERNEL); 2817 if (err) 2818 break; 2819 if (!nr_zones) { 2820 err = -EIO; 2821 break; 2822 } 2823 2824 for (i = 0; i < nr_zones; i++) { 2825 FDEV(devi).blkz_type[n] = zones[i].type; 2826 sector += zones[i].len; 2827 n++; 2828 } 2829 } 2830 2831 kvfree(zones); 2832 2833 return err; 2834 } 2835 #endif 2836 2837 /* 2838 * Read f2fs raw super block. 2839 * Because we have two copies of super block, so read both of them 2840 * to get the first valid one. If any one of them is broken, we pass 2841 * them recovery flag back to the caller. 2842 */ 2843 static int read_raw_super_block(struct f2fs_sb_info *sbi, 2844 struct f2fs_super_block **raw_super, 2845 int *valid_super_block, int *recovery) 2846 { 2847 struct super_block *sb = sbi->sb; 2848 int block; 2849 struct buffer_head *bh; 2850 struct f2fs_super_block *super; 2851 int err = 0; 2852 2853 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 2854 if (!super) 2855 return -ENOMEM; 2856 2857 for (block = 0; block < 2; block++) { 2858 bh = sb_bread(sb, block); 2859 if (!bh) { 2860 f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock", 2861 block + 1); 2862 err = -EIO; 2863 continue; 2864 } 2865 2866 /* sanity checking of raw super */ 2867 if (sanity_check_raw_super(sbi, bh)) { 2868 f2fs_msg(sb, KERN_ERR, 2869 "Can't find valid F2FS filesystem in %dth superblock", 2870 block + 1); 2871 err = -EINVAL; 2872 brelse(bh); 2873 continue; 2874 } 2875 2876 if (!*raw_super) { 2877 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 2878 sizeof(*super)); 2879 *valid_super_block = block; 2880 *raw_super = super; 2881 } 2882 brelse(bh); 2883 } 2884 2885 /* Fail to read any one of the superblocks*/ 2886 if (err < 0) 2887 *recovery = 1; 2888 2889 /* No valid superblock */ 2890 if (!*raw_super) 2891 kvfree(super); 2892 else 2893 err = 0; 2894 2895 return err; 2896 } 2897 2898 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 2899 { 2900 struct buffer_head *bh; 2901 __u32 crc = 0; 2902 int err; 2903 2904 if ((recover && f2fs_readonly(sbi->sb)) || 2905 bdev_read_only(sbi->sb->s_bdev)) { 2906 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2907 return -EROFS; 2908 } 2909 2910 /* we should update superblock crc here */ 2911 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 2912 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 2913 offsetof(struct f2fs_super_block, crc)); 2914 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 2915 } 2916 2917 /* write back-up superblock first */ 2918 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 2919 if (!bh) 2920 return -EIO; 2921 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 2922 brelse(bh); 2923 2924 /* if we are in recovery path, skip writing valid superblock */ 2925 if (recover || err) 2926 return err; 2927 2928 /* write current valid superblock */ 2929 bh = sb_bread(sbi->sb, sbi->valid_super_block); 2930 if (!bh) 2931 return -EIO; 2932 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 2933 brelse(bh); 2934 return err; 2935 } 2936 2937 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 2938 { 2939 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 2940 unsigned int max_devices = MAX_DEVICES; 2941 int i; 2942 2943 /* Initialize single device information */ 2944 if (!RDEV(0).path[0]) { 2945 if (!bdev_is_zoned(sbi->sb->s_bdev)) 2946 return 0; 2947 max_devices = 1; 2948 } 2949 2950 /* 2951 * Initialize multiple devices information, or single 2952 * zoned block device information. 2953 */ 2954 sbi->devs = f2fs_kzalloc(sbi, 2955 array_size(max_devices, 2956 sizeof(struct f2fs_dev_info)), 2957 GFP_KERNEL); 2958 if (!sbi->devs) 2959 return -ENOMEM; 2960 2961 for (i = 0; i < max_devices; i++) { 2962 2963 if (i > 0 && !RDEV(i).path[0]) 2964 break; 2965 2966 if (max_devices == 1) { 2967 /* Single zoned block device mount */ 2968 FDEV(0).bdev = 2969 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, 2970 sbi->sb->s_mode, sbi->sb->s_type); 2971 } else { 2972 /* Multi-device mount */ 2973 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 2974 FDEV(i).total_segments = 2975 le32_to_cpu(RDEV(i).total_segments); 2976 if (i == 0) { 2977 FDEV(i).start_blk = 0; 2978 FDEV(i).end_blk = FDEV(i).start_blk + 2979 (FDEV(i).total_segments << 2980 sbi->log_blocks_per_seg) - 1 + 2981 le32_to_cpu(raw_super->segment0_blkaddr); 2982 } else { 2983 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 2984 FDEV(i).end_blk = FDEV(i).start_blk + 2985 (FDEV(i).total_segments << 2986 sbi->log_blocks_per_seg) - 1; 2987 } 2988 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, 2989 sbi->sb->s_mode, sbi->sb->s_type); 2990 } 2991 if (IS_ERR(FDEV(i).bdev)) 2992 return PTR_ERR(FDEV(i).bdev); 2993 2994 /* to release errored devices */ 2995 sbi->s_ndevs = i + 1; 2996 2997 #ifdef CONFIG_BLK_DEV_ZONED 2998 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && 2999 !f2fs_sb_has_blkzoned(sbi)) { 3000 f2fs_msg(sbi->sb, KERN_ERR, 3001 "Zoned block device feature not enabled\n"); 3002 return -EINVAL; 3003 } 3004 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { 3005 if (init_blkz_info(sbi, i)) { 3006 f2fs_msg(sbi->sb, KERN_ERR, 3007 "Failed to initialize F2FS blkzone information"); 3008 return -EINVAL; 3009 } 3010 if (max_devices == 1) 3011 break; 3012 f2fs_msg(sbi->sb, KERN_INFO, 3013 "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", 3014 i, FDEV(i).path, 3015 FDEV(i).total_segments, 3016 FDEV(i).start_blk, FDEV(i).end_blk, 3017 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? 3018 "Host-aware" : "Host-managed"); 3019 continue; 3020 } 3021 #endif 3022 f2fs_msg(sbi->sb, KERN_INFO, 3023 "Mount Device [%2d]: %20s, %8u, %8x - %8x", 3024 i, FDEV(i).path, 3025 FDEV(i).total_segments, 3026 FDEV(i).start_blk, FDEV(i).end_blk); 3027 } 3028 f2fs_msg(sbi->sb, KERN_INFO, 3029 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi)); 3030 return 0; 3031 } 3032 3033 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 3034 { 3035 struct f2fs_sm_info *sm_i = SM_I(sbi); 3036 3037 /* adjust parameters according to the volume size */ 3038 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) { 3039 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 3040 sm_i->dcc_info->discard_granularity = 1; 3041 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE; 3042 } 3043 3044 sbi->readdir_ra = 1; 3045 } 3046 3047 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 3048 { 3049 struct f2fs_sb_info *sbi; 3050 struct f2fs_super_block *raw_super; 3051 struct inode *root; 3052 int err; 3053 bool skip_recovery = false, need_fsck = false; 3054 char *options = NULL; 3055 int recovery, i, valid_super_block; 3056 struct curseg_info *seg_i; 3057 int retry_cnt = 1; 3058 3059 try_onemore: 3060 err = -EINVAL; 3061 raw_super = NULL; 3062 valid_super_block = -1; 3063 recovery = 0; 3064 3065 /* allocate memory for f2fs-specific super block info */ 3066 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 3067 if (!sbi) 3068 return -ENOMEM; 3069 3070 sbi->sb = sb; 3071 3072 /* Load the checksum driver */ 3073 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 3074 if (IS_ERR(sbi->s_chksum_driver)) { 3075 f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver."); 3076 err = PTR_ERR(sbi->s_chksum_driver); 3077 sbi->s_chksum_driver = NULL; 3078 goto free_sbi; 3079 } 3080 3081 /* set a block size */ 3082 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 3083 f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); 3084 goto free_sbi; 3085 } 3086 3087 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 3088 &recovery); 3089 if (err) 3090 goto free_sbi; 3091 3092 sb->s_fs_info = sbi; 3093 sbi->raw_super = raw_super; 3094 3095 /* precompute checksum seed for metadata */ 3096 if (f2fs_sb_has_inode_chksum(sbi)) 3097 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 3098 sizeof(raw_super->uuid)); 3099 3100 /* 3101 * The BLKZONED feature indicates that the drive was formatted with 3102 * zone alignment optimization. This is optional for host-aware 3103 * devices, but mandatory for host-managed zoned block devices. 3104 */ 3105 #ifndef CONFIG_BLK_DEV_ZONED 3106 if (f2fs_sb_has_blkzoned(sbi)) { 3107 f2fs_msg(sb, KERN_ERR, 3108 "Zoned block device support is not enabled\n"); 3109 err = -EOPNOTSUPP; 3110 goto free_sb_buf; 3111 } 3112 #endif 3113 default_options(sbi); 3114 /* parse mount options */ 3115 options = kstrdup((const char *)data, GFP_KERNEL); 3116 if (data && !options) { 3117 err = -ENOMEM; 3118 goto free_sb_buf; 3119 } 3120 3121 err = parse_options(sb, options); 3122 if (err) 3123 goto free_options; 3124 3125 sbi->max_file_blocks = max_file_blocks(); 3126 sb->s_maxbytes = sbi->max_file_blocks << 3127 le32_to_cpu(raw_super->log_blocksize); 3128 sb->s_max_links = F2FS_LINK_MAX; 3129 3130 #ifdef CONFIG_QUOTA 3131 sb->dq_op = &f2fs_quota_operations; 3132 if (f2fs_sb_has_quota_ino(sbi)) 3133 sb->s_qcop = &dquot_quotactl_sysfile_ops; 3134 else 3135 sb->s_qcop = &f2fs_quotactl_ops; 3136 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 3137 3138 if (f2fs_sb_has_quota_ino(sbi)) { 3139 for (i = 0; i < MAXQUOTAS; i++) { 3140 if (f2fs_qf_ino(sbi->sb, i)) 3141 sbi->nquota_files++; 3142 } 3143 } 3144 #endif 3145 3146 sb->s_op = &f2fs_sops; 3147 #ifdef CONFIG_FS_ENCRYPTION 3148 sb->s_cop = &f2fs_cryptops; 3149 #endif 3150 sb->s_xattr = f2fs_xattr_handlers; 3151 sb->s_export_op = &f2fs_export_ops; 3152 sb->s_magic = F2FS_SUPER_MAGIC; 3153 sb->s_time_gran = 1; 3154 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 3155 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 3156 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); 3157 sb->s_iflags |= SB_I_CGROUPWB; 3158 3159 /* init f2fs-specific super block info */ 3160 sbi->valid_super_block = valid_super_block; 3161 mutex_init(&sbi->gc_mutex); 3162 mutex_init(&sbi->writepages); 3163 mutex_init(&sbi->cp_mutex); 3164 init_rwsem(&sbi->node_write); 3165 init_rwsem(&sbi->node_change); 3166 3167 /* disallow all the data/node/meta page writes */ 3168 set_sbi_flag(sbi, SBI_POR_DOING); 3169 spin_lock_init(&sbi->stat_lock); 3170 3171 /* init iostat info */ 3172 spin_lock_init(&sbi->iostat_lock); 3173 sbi->iostat_enable = false; 3174 3175 for (i = 0; i < NR_PAGE_TYPE; i++) { 3176 int n = (i == META) ? 1: NR_TEMP_TYPE; 3177 int j; 3178 3179 sbi->write_io[i] = 3180 f2fs_kmalloc(sbi, 3181 array_size(n, 3182 sizeof(struct f2fs_bio_info)), 3183 GFP_KERNEL); 3184 if (!sbi->write_io[i]) { 3185 err = -ENOMEM; 3186 goto free_bio_info; 3187 } 3188 3189 for (j = HOT; j < n; j++) { 3190 init_rwsem(&sbi->write_io[i][j].io_rwsem); 3191 sbi->write_io[i][j].sbi = sbi; 3192 sbi->write_io[i][j].bio = NULL; 3193 spin_lock_init(&sbi->write_io[i][j].io_lock); 3194 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list); 3195 } 3196 } 3197 3198 init_rwsem(&sbi->cp_rwsem); 3199 init_waitqueue_head(&sbi->cp_wait); 3200 init_sb_info(sbi); 3201 3202 err = init_percpu_info(sbi); 3203 if (err) 3204 goto free_bio_info; 3205 3206 if (F2FS_IO_SIZE(sbi) > 1) { 3207 sbi->write_io_dummy = 3208 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); 3209 if (!sbi->write_io_dummy) { 3210 err = -ENOMEM; 3211 goto free_percpu; 3212 } 3213 } 3214 3215 /* get an inode for meta space */ 3216 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 3217 if (IS_ERR(sbi->meta_inode)) { 3218 f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode"); 3219 err = PTR_ERR(sbi->meta_inode); 3220 goto free_io_dummy; 3221 } 3222 3223 err = f2fs_get_valid_checkpoint(sbi); 3224 if (err) { 3225 f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint"); 3226 goto free_meta_inode; 3227 } 3228 3229 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 3230 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3231 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 3232 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 3233 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 3234 } 3235 3236 /* Initialize device list */ 3237 err = f2fs_scan_devices(sbi); 3238 if (err) { 3239 f2fs_msg(sb, KERN_ERR, "Failed to find devices"); 3240 goto free_devices; 3241 } 3242 3243 sbi->total_valid_node_count = 3244 le32_to_cpu(sbi->ckpt->valid_node_count); 3245 percpu_counter_set(&sbi->total_valid_inode_count, 3246 le32_to_cpu(sbi->ckpt->valid_inode_count)); 3247 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 3248 sbi->total_valid_block_count = 3249 le64_to_cpu(sbi->ckpt->valid_block_count); 3250 sbi->last_valid_block_count = sbi->total_valid_block_count; 3251 sbi->reserved_blocks = 0; 3252 sbi->current_reserved_blocks = 0; 3253 limit_reserve_root(sbi); 3254 3255 for (i = 0; i < NR_INODE_TYPE; i++) { 3256 INIT_LIST_HEAD(&sbi->inode_list[i]); 3257 spin_lock_init(&sbi->inode_lock[i]); 3258 } 3259 3260 f2fs_init_extent_cache_info(sbi); 3261 3262 f2fs_init_ino_entry_info(sbi); 3263 3264 f2fs_init_fsync_node_info(sbi); 3265 3266 /* setup f2fs internal modules */ 3267 err = f2fs_build_segment_manager(sbi); 3268 if (err) { 3269 f2fs_msg(sb, KERN_ERR, 3270 "Failed to initialize F2FS segment manager"); 3271 goto free_sm; 3272 } 3273 err = f2fs_build_node_manager(sbi); 3274 if (err) { 3275 f2fs_msg(sb, KERN_ERR, 3276 "Failed to initialize F2FS node manager"); 3277 goto free_nm; 3278 } 3279 3280 /* For write statistics */ 3281 if (sb->s_bdev->bd_part) 3282 sbi->sectors_written_start = 3283 (u64)part_stat_read(sb->s_bdev->bd_part, 3284 sectors[STAT_WRITE]); 3285 3286 /* Read accumulated write IO statistics if exists */ 3287 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 3288 if (__exist_node_summaries(sbi)) 3289 sbi->kbytes_written = 3290 le64_to_cpu(seg_i->journal->info.kbytes_written); 3291 3292 f2fs_build_gc_manager(sbi); 3293 3294 err = f2fs_build_stats(sbi); 3295 if (err) 3296 goto free_nm; 3297 3298 /* get an inode for node space */ 3299 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 3300 if (IS_ERR(sbi->node_inode)) { 3301 f2fs_msg(sb, KERN_ERR, "Failed to read node inode"); 3302 err = PTR_ERR(sbi->node_inode); 3303 goto free_stats; 3304 } 3305 3306 /* read root inode and dentry */ 3307 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 3308 if (IS_ERR(root)) { 3309 f2fs_msg(sb, KERN_ERR, "Failed to read root inode"); 3310 err = PTR_ERR(root); 3311 goto free_node_inode; 3312 } 3313 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 3314 !root->i_size || !root->i_nlink) { 3315 iput(root); 3316 err = -EINVAL; 3317 goto free_node_inode; 3318 } 3319 3320 sb->s_root = d_make_root(root); /* allocate root dentry */ 3321 if (!sb->s_root) { 3322 err = -ENOMEM; 3323 goto free_node_inode; 3324 } 3325 3326 err = f2fs_register_sysfs(sbi); 3327 if (err) 3328 goto free_root_inode; 3329 3330 #ifdef CONFIG_QUOTA 3331 /* Enable quota usage during mount */ 3332 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 3333 err = f2fs_enable_quotas(sb); 3334 if (err) 3335 f2fs_msg(sb, KERN_ERR, 3336 "Cannot turn on quotas: error %d", err); 3337 } 3338 #endif 3339 /* if there are nt orphan nodes free them */ 3340 err = f2fs_recover_orphan_inodes(sbi); 3341 if (err) 3342 goto free_meta; 3343 3344 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 3345 goto reset_checkpoint; 3346 3347 /* recover fsynced data */ 3348 if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { 3349 /* 3350 * mount should be failed, when device has readonly mode, and 3351 * previous checkpoint was not done by clean system shutdown. 3352 */ 3353 if (bdev_read_only(sb->s_bdev) && 3354 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 3355 err = -EROFS; 3356 goto free_meta; 3357 } 3358 3359 if (need_fsck) 3360 set_sbi_flag(sbi, SBI_NEED_FSCK); 3361 3362 if (skip_recovery) 3363 goto reset_checkpoint; 3364 3365 err = f2fs_recover_fsync_data(sbi, false); 3366 if (err < 0) { 3367 if (err != -ENOMEM) 3368 skip_recovery = true; 3369 need_fsck = true; 3370 f2fs_msg(sb, KERN_ERR, 3371 "Cannot recover all fsync data errno=%d", err); 3372 goto free_meta; 3373 } 3374 } else { 3375 err = f2fs_recover_fsync_data(sbi, true); 3376 3377 if (!f2fs_readonly(sb) && err > 0) { 3378 err = -EINVAL; 3379 f2fs_msg(sb, KERN_ERR, 3380 "Need to recover fsync data"); 3381 goto free_meta; 3382 } 3383 } 3384 reset_checkpoint: 3385 /* f2fs_recover_fsync_data() cleared this already */ 3386 clear_sbi_flag(sbi, SBI_POR_DOING); 3387 3388 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 3389 err = f2fs_disable_checkpoint(sbi); 3390 if (err) 3391 goto sync_free_meta; 3392 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 3393 f2fs_enable_checkpoint(sbi); 3394 } 3395 3396 /* 3397 * If filesystem is not mounted as read-only then 3398 * do start the gc_thread. 3399 */ 3400 if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) { 3401 /* After POR, we can run background GC thread.*/ 3402 err = f2fs_start_gc_thread(sbi); 3403 if (err) 3404 goto sync_free_meta; 3405 } 3406 kvfree(options); 3407 3408 /* recover broken superblock */ 3409 if (recovery) { 3410 err = f2fs_commit_super(sbi, true); 3411 f2fs_msg(sb, KERN_INFO, 3412 "Try to recover %dth superblock, ret: %d", 3413 sbi->valid_super_block ? 1 : 2, err); 3414 } 3415 3416 f2fs_join_shrinker(sbi); 3417 3418 f2fs_tuning_parameters(sbi); 3419 3420 f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx", 3421 cur_cp_version(F2FS_CKPT(sbi))); 3422 f2fs_update_time(sbi, CP_TIME); 3423 f2fs_update_time(sbi, REQ_TIME); 3424 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 3425 return 0; 3426 3427 sync_free_meta: 3428 /* safe to flush all the data */ 3429 sync_filesystem(sbi->sb); 3430 retry_cnt = 0; 3431 3432 free_meta: 3433 #ifdef CONFIG_QUOTA 3434 f2fs_truncate_quota_inode_pages(sb); 3435 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 3436 f2fs_quota_off_umount(sbi->sb); 3437 #endif 3438 /* 3439 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 3440 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 3441 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 3442 * falls into an infinite loop in f2fs_sync_meta_pages(). 3443 */ 3444 truncate_inode_pages_final(META_MAPPING(sbi)); 3445 /* evict some inodes being cached by GC */ 3446 evict_inodes(sb); 3447 f2fs_unregister_sysfs(sbi); 3448 free_root_inode: 3449 dput(sb->s_root); 3450 sb->s_root = NULL; 3451 free_node_inode: 3452 f2fs_release_ino_entry(sbi, true); 3453 truncate_inode_pages_final(NODE_MAPPING(sbi)); 3454 iput(sbi->node_inode); 3455 sbi->node_inode = NULL; 3456 free_stats: 3457 f2fs_destroy_stats(sbi); 3458 free_nm: 3459 f2fs_destroy_node_manager(sbi); 3460 free_sm: 3461 f2fs_destroy_segment_manager(sbi); 3462 free_devices: 3463 destroy_device_list(sbi); 3464 kvfree(sbi->ckpt); 3465 free_meta_inode: 3466 make_bad_inode(sbi->meta_inode); 3467 iput(sbi->meta_inode); 3468 sbi->meta_inode = NULL; 3469 free_io_dummy: 3470 mempool_destroy(sbi->write_io_dummy); 3471 free_percpu: 3472 destroy_percpu_info(sbi); 3473 free_bio_info: 3474 for (i = 0; i < NR_PAGE_TYPE; i++) 3475 kvfree(sbi->write_io[i]); 3476 free_options: 3477 #ifdef CONFIG_QUOTA 3478 for (i = 0; i < MAXQUOTAS; i++) 3479 kvfree(F2FS_OPTION(sbi).s_qf_names[i]); 3480 #endif 3481 kvfree(options); 3482 free_sb_buf: 3483 kvfree(raw_super); 3484 free_sbi: 3485 if (sbi->s_chksum_driver) 3486 crypto_free_shash(sbi->s_chksum_driver); 3487 kvfree(sbi); 3488 3489 /* give only one another chance */ 3490 if (retry_cnt > 0 && skip_recovery) { 3491 retry_cnt--; 3492 shrink_dcache_sb(sb); 3493 goto try_onemore; 3494 } 3495 return err; 3496 } 3497 3498 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 3499 const char *dev_name, void *data) 3500 { 3501 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 3502 } 3503 3504 static void kill_f2fs_super(struct super_block *sb) 3505 { 3506 if (sb->s_root) { 3507 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3508 3509 set_sbi_flag(sbi, SBI_IS_CLOSE); 3510 f2fs_stop_gc_thread(sbi); 3511 f2fs_stop_discard_thread(sbi); 3512 3513 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 3514 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 3515 struct cp_control cpc = { 3516 .reason = CP_UMOUNT, 3517 }; 3518 f2fs_write_checkpoint(sbi, &cpc); 3519 } 3520 3521 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 3522 sb->s_flags &= ~SB_RDONLY; 3523 } 3524 kill_block_super(sb); 3525 } 3526 3527 static struct file_system_type f2fs_fs_type = { 3528 .owner = THIS_MODULE, 3529 .name = "f2fs", 3530 .mount = f2fs_mount, 3531 .kill_sb = kill_f2fs_super, 3532 .fs_flags = FS_REQUIRES_DEV, 3533 }; 3534 MODULE_ALIAS_FS("f2fs"); 3535 3536 static int __init init_inodecache(void) 3537 { 3538 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 3539 sizeof(struct f2fs_inode_info), 0, 3540 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 3541 if (!f2fs_inode_cachep) 3542 return -ENOMEM; 3543 return 0; 3544 } 3545 3546 static void destroy_inodecache(void) 3547 { 3548 /* 3549 * Make sure all delayed rcu free inodes are flushed before we 3550 * destroy cache. 3551 */ 3552 rcu_barrier(); 3553 kmem_cache_destroy(f2fs_inode_cachep); 3554 } 3555 3556 static int __init init_f2fs_fs(void) 3557 { 3558 int err; 3559 3560 if (PAGE_SIZE != F2FS_BLKSIZE) { 3561 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n", 3562 PAGE_SIZE, F2FS_BLKSIZE); 3563 return -EINVAL; 3564 } 3565 3566 f2fs_build_trace_ios(); 3567 3568 err = init_inodecache(); 3569 if (err) 3570 goto fail; 3571 err = f2fs_create_node_manager_caches(); 3572 if (err) 3573 goto free_inodecache; 3574 err = f2fs_create_segment_manager_caches(); 3575 if (err) 3576 goto free_node_manager_caches; 3577 err = f2fs_create_checkpoint_caches(); 3578 if (err) 3579 goto free_segment_manager_caches; 3580 err = f2fs_create_extent_cache(); 3581 if (err) 3582 goto free_checkpoint_caches; 3583 err = f2fs_init_sysfs(); 3584 if (err) 3585 goto free_extent_cache; 3586 err = register_shrinker(&f2fs_shrinker_info); 3587 if (err) 3588 goto free_sysfs; 3589 err = register_filesystem(&f2fs_fs_type); 3590 if (err) 3591 goto free_shrinker; 3592 f2fs_create_root_stats(); 3593 err = f2fs_init_post_read_processing(); 3594 if (err) 3595 goto free_root_stats; 3596 return 0; 3597 3598 free_root_stats: 3599 f2fs_destroy_root_stats(); 3600 unregister_filesystem(&f2fs_fs_type); 3601 free_shrinker: 3602 unregister_shrinker(&f2fs_shrinker_info); 3603 free_sysfs: 3604 f2fs_exit_sysfs(); 3605 free_extent_cache: 3606 f2fs_destroy_extent_cache(); 3607 free_checkpoint_caches: 3608 f2fs_destroy_checkpoint_caches(); 3609 free_segment_manager_caches: 3610 f2fs_destroy_segment_manager_caches(); 3611 free_node_manager_caches: 3612 f2fs_destroy_node_manager_caches(); 3613 free_inodecache: 3614 destroy_inodecache(); 3615 fail: 3616 return err; 3617 } 3618 3619 static void __exit exit_f2fs_fs(void) 3620 { 3621 f2fs_destroy_post_read_processing(); 3622 f2fs_destroy_root_stats(); 3623 unregister_filesystem(&f2fs_fs_type); 3624 unregister_shrinker(&f2fs_shrinker_info); 3625 f2fs_exit_sysfs(); 3626 f2fs_destroy_extent_cache(); 3627 f2fs_destroy_checkpoint_caches(); 3628 f2fs_destroy_segment_manager_caches(); 3629 f2fs_destroy_node_manager_caches(); 3630 destroy_inodecache(); 3631 f2fs_destroy_trace_ios(); 3632 } 3633 3634 module_init(init_f2fs_fs) 3635 module_exit(exit_f2fs_fs) 3636 3637 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 3638 MODULE_DESCRIPTION("Flash Friendly File System"); 3639 MODULE_LICENSE("GPL"); 3640 3641