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/fs_context.h> 12 #include <linux/sched/mm.h> 13 #include <linux/statfs.h> 14 #include <linux/buffer_head.h> 15 #include <linux/kthread.h> 16 #include <linux/parser.h> 17 #include <linux/mount.h> 18 #include <linux/seq_file.h> 19 #include <linux/proc_fs.h> 20 #include <linux/random.h> 21 #include <linux/exportfs.h> 22 #include <linux/blkdev.h> 23 #include <linux/quotaops.h> 24 #include <linux/f2fs_fs.h> 25 #include <linux/sysfs.h> 26 #include <linux/quota.h> 27 #include <linux/unicode.h> 28 #include <linux/part_stat.h> 29 #include <linux/zstd.h> 30 #include <linux/lz4.h> 31 32 #include "f2fs.h" 33 #include "node.h" 34 #include "segment.h" 35 #include "xattr.h" 36 #include "gc.h" 37 #include "iostat.h" 38 39 #define CREATE_TRACE_POINTS 40 #include <trace/events/f2fs.h> 41 42 static struct kmem_cache *f2fs_inode_cachep; 43 44 #ifdef CONFIG_F2FS_FAULT_INJECTION 45 46 const char *f2fs_fault_name[FAULT_MAX] = { 47 [FAULT_KMALLOC] = "kmalloc", 48 [FAULT_KVMALLOC] = "kvmalloc", 49 [FAULT_PAGE_ALLOC] = "page alloc", 50 [FAULT_PAGE_GET] = "page get", 51 [FAULT_ALLOC_NID] = "alloc nid", 52 [FAULT_ORPHAN] = "orphan", 53 [FAULT_BLOCK] = "no more block", 54 [FAULT_DIR_DEPTH] = "too big dir depth", 55 [FAULT_EVICT_INODE] = "evict_inode fail", 56 [FAULT_TRUNCATE] = "truncate fail", 57 [FAULT_READ_IO] = "read IO error", 58 [FAULT_CHECKPOINT] = "checkpoint error", 59 [FAULT_DISCARD] = "discard error", 60 [FAULT_WRITE_IO] = "write IO error", 61 [FAULT_SLAB_ALLOC] = "slab alloc", 62 [FAULT_DQUOT_INIT] = "dquot initialize", 63 [FAULT_LOCK_OP] = "lock_op", 64 [FAULT_BLKADDR] = "invalid blkaddr", 65 }; 66 67 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, 68 unsigned int type) 69 { 70 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; 71 72 if (rate) { 73 atomic_set(&ffi->inject_ops, 0); 74 ffi->inject_rate = rate; 75 } 76 77 if (type) 78 ffi->inject_type = type; 79 80 if (!rate && !type) 81 memset(ffi, 0, sizeof(struct f2fs_fault_info)); 82 } 83 #endif 84 85 /* f2fs-wide shrinker description */ 86 static struct shrinker f2fs_shrinker_info = { 87 .scan_objects = f2fs_shrink_scan, 88 .count_objects = f2fs_shrink_count, 89 .seeks = DEFAULT_SEEKS, 90 }; 91 92 enum { 93 Opt_gc_background, 94 Opt_disable_roll_forward, 95 Opt_norecovery, 96 Opt_discard, 97 Opt_nodiscard, 98 Opt_noheap, 99 Opt_heap, 100 Opt_user_xattr, 101 Opt_nouser_xattr, 102 Opt_acl, 103 Opt_noacl, 104 Opt_active_logs, 105 Opt_disable_ext_identify, 106 Opt_inline_xattr, 107 Opt_noinline_xattr, 108 Opt_inline_xattr_size, 109 Opt_inline_data, 110 Opt_inline_dentry, 111 Opt_noinline_dentry, 112 Opt_flush_merge, 113 Opt_noflush_merge, 114 Opt_barrier, 115 Opt_nobarrier, 116 Opt_fastboot, 117 Opt_extent_cache, 118 Opt_noextent_cache, 119 Opt_noinline_data, 120 Opt_data_flush, 121 Opt_reserve_root, 122 Opt_resgid, 123 Opt_resuid, 124 Opt_mode, 125 Opt_io_size_bits, 126 Opt_fault_injection, 127 Opt_fault_type, 128 Opt_lazytime, 129 Opt_nolazytime, 130 Opt_quota, 131 Opt_noquota, 132 Opt_usrquota, 133 Opt_grpquota, 134 Opt_prjquota, 135 Opt_usrjquota, 136 Opt_grpjquota, 137 Opt_prjjquota, 138 Opt_offusrjquota, 139 Opt_offgrpjquota, 140 Opt_offprjjquota, 141 Opt_jqfmt_vfsold, 142 Opt_jqfmt_vfsv0, 143 Opt_jqfmt_vfsv1, 144 Opt_alloc, 145 Opt_fsync, 146 Opt_test_dummy_encryption, 147 Opt_inlinecrypt, 148 Opt_checkpoint_disable, 149 Opt_checkpoint_disable_cap, 150 Opt_checkpoint_disable_cap_perc, 151 Opt_checkpoint_enable, 152 Opt_checkpoint_merge, 153 Opt_nocheckpoint_merge, 154 Opt_compress_algorithm, 155 Opt_compress_log_size, 156 Opt_compress_extension, 157 Opt_nocompress_extension, 158 Opt_compress_chksum, 159 Opt_compress_mode, 160 Opt_compress_cache, 161 Opt_atgc, 162 Opt_gc_merge, 163 Opt_nogc_merge, 164 Opt_discard_unit, 165 Opt_memory_mode, 166 Opt_age_extent_cache, 167 Opt_err, 168 }; 169 170 static match_table_t f2fs_tokens = { 171 {Opt_gc_background, "background_gc=%s"}, 172 {Opt_disable_roll_forward, "disable_roll_forward"}, 173 {Opt_norecovery, "norecovery"}, 174 {Opt_discard, "discard"}, 175 {Opt_nodiscard, "nodiscard"}, 176 {Opt_noheap, "no_heap"}, 177 {Opt_heap, "heap"}, 178 {Opt_user_xattr, "user_xattr"}, 179 {Opt_nouser_xattr, "nouser_xattr"}, 180 {Opt_acl, "acl"}, 181 {Opt_noacl, "noacl"}, 182 {Opt_active_logs, "active_logs=%u"}, 183 {Opt_disable_ext_identify, "disable_ext_identify"}, 184 {Opt_inline_xattr, "inline_xattr"}, 185 {Opt_noinline_xattr, "noinline_xattr"}, 186 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 187 {Opt_inline_data, "inline_data"}, 188 {Opt_inline_dentry, "inline_dentry"}, 189 {Opt_noinline_dentry, "noinline_dentry"}, 190 {Opt_flush_merge, "flush_merge"}, 191 {Opt_noflush_merge, "noflush_merge"}, 192 {Opt_barrier, "barrier"}, 193 {Opt_nobarrier, "nobarrier"}, 194 {Opt_fastboot, "fastboot"}, 195 {Opt_extent_cache, "extent_cache"}, 196 {Opt_noextent_cache, "noextent_cache"}, 197 {Opt_noinline_data, "noinline_data"}, 198 {Opt_data_flush, "data_flush"}, 199 {Opt_reserve_root, "reserve_root=%u"}, 200 {Opt_resgid, "resgid=%u"}, 201 {Opt_resuid, "resuid=%u"}, 202 {Opt_mode, "mode=%s"}, 203 {Opt_io_size_bits, "io_bits=%u"}, 204 {Opt_fault_injection, "fault_injection=%u"}, 205 {Opt_fault_type, "fault_type=%u"}, 206 {Opt_lazytime, "lazytime"}, 207 {Opt_nolazytime, "nolazytime"}, 208 {Opt_quota, "quota"}, 209 {Opt_noquota, "noquota"}, 210 {Opt_usrquota, "usrquota"}, 211 {Opt_grpquota, "grpquota"}, 212 {Opt_prjquota, "prjquota"}, 213 {Opt_usrjquota, "usrjquota=%s"}, 214 {Opt_grpjquota, "grpjquota=%s"}, 215 {Opt_prjjquota, "prjjquota=%s"}, 216 {Opt_offusrjquota, "usrjquota="}, 217 {Opt_offgrpjquota, "grpjquota="}, 218 {Opt_offprjjquota, "prjjquota="}, 219 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 220 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 221 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 222 {Opt_alloc, "alloc_mode=%s"}, 223 {Opt_fsync, "fsync_mode=%s"}, 224 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, 225 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 226 {Opt_inlinecrypt, "inlinecrypt"}, 227 {Opt_checkpoint_disable, "checkpoint=disable"}, 228 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, 229 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, 230 {Opt_checkpoint_enable, "checkpoint=enable"}, 231 {Opt_checkpoint_merge, "checkpoint_merge"}, 232 {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, 233 {Opt_compress_algorithm, "compress_algorithm=%s"}, 234 {Opt_compress_log_size, "compress_log_size=%u"}, 235 {Opt_compress_extension, "compress_extension=%s"}, 236 {Opt_nocompress_extension, "nocompress_extension=%s"}, 237 {Opt_compress_chksum, "compress_chksum"}, 238 {Opt_compress_mode, "compress_mode=%s"}, 239 {Opt_compress_cache, "compress_cache"}, 240 {Opt_atgc, "atgc"}, 241 {Opt_gc_merge, "gc_merge"}, 242 {Opt_nogc_merge, "nogc_merge"}, 243 {Opt_discard_unit, "discard_unit=%s"}, 244 {Opt_memory_mode, "memory=%s"}, 245 {Opt_age_extent_cache, "age_extent_cache"}, 246 {Opt_err, NULL}, 247 }; 248 249 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...) 250 { 251 struct va_format vaf; 252 va_list args; 253 int level; 254 255 va_start(args, fmt); 256 257 level = printk_get_level(fmt); 258 vaf.fmt = printk_skip_level(fmt); 259 vaf.va = &args; 260 printk("%c%cF2FS-fs (%s): %pV\n", 261 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 262 263 va_end(args); 264 } 265 266 #if IS_ENABLED(CONFIG_UNICODE) 267 static const struct f2fs_sb_encodings { 268 __u16 magic; 269 char *name; 270 unsigned int version; 271 } f2fs_sb_encoding_map[] = { 272 {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)}, 273 }; 274 275 static const struct f2fs_sb_encodings * 276 f2fs_sb_read_encoding(const struct f2fs_super_block *sb) 277 { 278 __u16 magic = le16_to_cpu(sb->s_encoding); 279 int i; 280 281 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) 282 if (magic == f2fs_sb_encoding_map[i].magic) 283 return &f2fs_sb_encoding_map[i]; 284 285 return NULL; 286 } 287 288 struct kmem_cache *f2fs_cf_name_slab; 289 static int __init f2fs_create_casefold_cache(void) 290 { 291 f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name", 292 F2FS_NAME_LEN); 293 return f2fs_cf_name_slab ? 0 : -ENOMEM; 294 } 295 296 static void f2fs_destroy_casefold_cache(void) 297 { 298 kmem_cache_destroy(f2fs_cf_name_slab); 299 } 300 #else 301 static int __init f2fs_create_casefold_cache(void) { return 0; } 302 static void f2fs_destroy_casefold_cache(void) { } 303 #endif 304 305 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 306 { 307 block_t limit = min((sbi->user_block_count >> 3), 308 sbi->user_block_count - sbi->reserved_blocks); 309 310 /* limit is 12.5% */ 311 if (test_opt(sbi, RESERVE_ROOT) && 312 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 313 F2FS_OPTION(sbi).root_reserved_blocks = limit; 314 f2fs_info(sbi, "Reduce reserved blocks for root = %u", 315 F2FS_OPTION(sbi).root_reserved_blocks); 316 } 317 if (!test_opt(sbi, RESERVE_ROOT) && 318 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 319 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 320 !gid_eq(F2FS_OPTION(sbi).s_resgid, 321 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 322 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 323 from_kuid_munged(&init_user_ns, 324 F2FS_OPTION(sbi).s_resuid), 325 from_kgid_munged(&init_user_ns, 326 F2FS_OPTION(sbi).s_resgid)); 327 } 328 329 static inline int adjust_reserved_segment(struct f2fs_sb_info *sbi) 330 { 331 unsigned int sec_blks = sbi->blocks_per_seg * sbi->segs_per_sec; 332 unsigned int avg_vblocks; 333 unsigned int wanted_reserved_segments; 334 block_t avail_user_block_count; 335 336 if (!F2FS_IO_ALIGNED(sbi)) 337 return 0; 338 339 /* average valid block count in section in worst case */ 340 avg_vblocks = sec_blks / F2FS_IO_SIZE(sbi); 341 342 /* 343 * we need enough free space when migrating one section in worst case 344 */ 345 wanted_reserved_segments = (F2FS_IO_SIZE(sbi) / avg_vblocks) * 346 reserved_segments(sbi); 347 wanted_reserved_segments -= reserved_segments(sbi); 348 349 avail_user_block_count = sbi->user_block_count - 350 sbi->current_reserved_blocks - 351 F2FS_OPTION(sbi).root_reserved_blocks; 352 353 if (wanted_reserved_segments * sbi->blocks_per_seg > 354 avail_user_block_count) { 355 f2fs_err(sbi, "IO align feature can't grab additional reserved segment: %u, available segments: %u", 356 wanted_reserved_segments, 357 avail_user_block_count >> sbi->log_blocks_per_seg); 358 return -ENOSPC; 359 } 360 361 SM_I(sbi)->additional_reserved_segments = wanted_reserved_segments; 362 363 f2fs_info(sbi, "IO align feature needs additional reserved segment: %u", 364 wanted_reserved_segments); 365 366 return 0; 367 } 368 369 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) 370 { 371 if (!F2FS_OPTION(sbi).unusable_cap_perc) 372 return; 373 374 if (F2FS_OPTION(sbi).unusable_cap_perc == 100) 375 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; 376 else 377 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * 378 F2FS_OPTION(sbi).unusable_cap_perc; 379 380 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", 381 F2FS_OPTION(sbi).unusable_cap, 382 F2FS_OPTION(sbi).unusable_cap_perc); 383 } 384 385 static void init_once(void *foo) 386 { 387 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 388 389 inode_init_once(&fi->vfs_inode); 390 } 391 392 #ifdef CONFIG_QUOTA 393 static const char * const quotatypes[] = INITQFNAMES; 394 #define QTYPE2NAME(t) (quotatypes[t]) 395 static int f2fs_set_qf_name(struct super_block *sb, int qtype, 396 substring_t *args) 397 { 398 struct f2fs_sb_info *sbi = F2FS_SB(sb); 399 char *qname; 400 int ret = -EINVAL; 401 402 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 403 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 404 return -EINVAL; 405 } 406 if (f2fs_sb_has_quota_ino(sbi)) { 407 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); 408 return 0; 409 } 410 411 qname = match_strdup(args); 412 if (!qname) { 413 f2fs_err(sbi, "Not enough memory for storing quotafile name"); 414 return -ENOMEM; 415 } 416 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 417 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 418 ret = 0; 419 else 420 f2fs_err(sbi, "%s quota file already specified", 421 QTYPE2NAME(qtype)); 422 goto errout; 423 } 424 if (strchr(qname, '/')) { 425 f2fs_err(sbi, "quotafile must be on filesystem root"); 426 goto errout; 427 } 428 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 429 set_opt(sbi, QUOTA); 430 return 0; 431 errout: 432 kfree(qname); 433 return ret; 434 } 435 436 static int f2fs_clear_qf_name(struct super_block *sb, int qtype) 437 { 438 struct f2fs_sb_info *sbi = F2FS_SB(sb); 439 440 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { 441 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 442 return -EINVAL; 443 } 444 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 445 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 446 return 0; 447 } 448 449 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 450 { 451 /* 452 * We do the test below only for project quotas. 'usrquota' and 453 * 'grpquota' mount options are allowed even without quota feature 454 * to support legacy quotas in quota files. 455 */ 456 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 457 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); 458 return -1; 459 } 460 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 461 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 462 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 463 if (test_opt(sbi, USRQUOTA) && 464 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 465 clear_opt(sbi, USRQUOTA); 466 467 if (test_opt(sbi, GRPQUOTA) && 468 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 469 clear_opt(sbi, GRPQUOTA); 470 471 if (test_opt(sbi, PRJQUOTA) && 472 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 473 clear_opt(sbi, PRJQUOTA); 474 475 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 476 test_opt(sbi, PRJQUOTA)) { 477 f2fs_err(sbi, "old and new quota format mixing"); 478 return -1; 479 } 480 481 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 482 f2fs_err(sbi, "journaled quota format not specified"); 483 return -1; 484 } 485 } 486 487 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 488 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); 489 F2FS_OPTION(sbi).s_jquota_fmt = 0; 490 } 491 return 0; 492 } 493 #endif 494 495 static int f2fs_set_test_dummy_encryption(struct super_block *sb, 496 const char *opt, 497 const substring_t *arg, 498 bool is_remount) 499 { 500 struct f2fs_sb_info *sbi = F2FS_SB(sb); 501 struct fs_parameter param = { 502 .type = fs_value_is_string, 503 .string = arg->from ? arg->from : "", 504 }; 505 struct fscrypt_dummy_policy *policy = 506 &F2FS_OPTION(sbi).dummy_enc_policy; 507 int err; 508 509 if (!IS_ENABLED(CONFIG_FS_ENCRYPTION)) { 510 f2fs_warn(sbi, "test_dummy_encryption option not supported"); 511 return -EINVAL; 512 } 513 514 if (!f2fs_sb_has_encrypt(sbi)) { 515 f2fs_err(sbi, "Encrypt feature is off"); 516 return -EINVAL; 517 } 518 519 /* 520 * This mount option is just for testing, and it's not worthwhile to 521 * implement the extra complexity (e.g. RCU protection) that would be 522 * needed to allow it to be set or changed during remount. We do allow 523 * it to be specified during remount, but only if there is no change. 524 */ 525 if (is_remount && !fscrypt_is_dummy_policy_set(policy)) { 526 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); 527 return -EINVAL; 528 } 529 530 err = fscrypt_parse_test_dummy_encryption(¶m, policy); 531 if (err) { 532 if (err == -EEXIST) 533 f2fs_warn(sbi, 534 "Can't change test_dummy_encryption on remount"); 535 else if (err == -EINVAL) 536 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", 537 opt); 538 else 539 f2fs_warn(sbi, "Error processing option \"%s\" [%d]", 540 opt, err); 541 return -EINVAL; 542 } 543 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 544 return 0; 545 } 546 547 #ifdef CONFIG_F2FS_FS_COMPRESSION 548 /* 549 * 1. The same extension name cannot not appear in both compress and non-compress extension 550 * at the same time. 551 * 2. If the compress extension specifies all files, the types specified by the non-compress 552 * extension will be treated as special cases and will not be compressed. 553 * 3. Don't allow the non-compress extension specifies all files. 554 */ 555 static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi) 556 { 557 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 558 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 559 int ext_cnt, noext_cnt, index = 0, no_index = 0; 560 561 ext = F2FS_OPTION(sbi).extensions; 562 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 563 noext = F2FS_OPTION(sbi).noextensions; 564 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 565 566 if (!noext_cnt) 567 return 0; 568 569 for (no_index = 0; no_index < noext_cnt; no_index++) { 570 if (!strcasecmp("*", noext[no_index])) { 571 f2fs_info(sbi, "Don't allow the nocompress extension specifies all files"); 572 return -EINVAL; 573 } 574 for (index = 0; index < ext_cnt; index++) { 575 if (!strcasecmp(ext[index], noext[no_index])) { 576 f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension", 577 ext[index]); 578 return -EINVAL; 579 } 580 } 581 } 582 return 0; 583 } 584 585 #ifdef CONFIG_F2FS_FS_LZ4 586 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 587 { 588 #ifdef CONFIG_F2FS_FS_LZ4HC 589 unsigned int level; 590 #endif 591 592 if (strlen(str) == 3) { 593 F2FS_OPTION(sbi).compress_level = 0; 594 return 0; 595 } 596 597 #ifdef CONFIG_F2FS_FS_LZ4HC 598 str += 3; 599 600 if (str[0] != ':') { 601 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 602 return -EINVAL; 603 } 604 if (kstrtouint(str + 1, 10, &level)) 605 return -EINVAL; 606 607 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) { 608 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 609 return -EINVAL; 610 } 611 612 F2FS_OPTION(sbi).compress_level = level; 613 return 0; 614 #else 615 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 616 return -EINVAL; 617 #endif 618 } 619 #endif 620 621 #ifdef CONFIG_F2FS_FS_ZSTD 622 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 623 { 624 unsigned int level; 625 int len = 4; 626 627 if (strlen(str) == len) { 628 F2FS_OPTION(sbi).compress_level = 0; 629 return 0; 630 } 631 632 str += len; 633 634 if (str[0] != ':') { 635 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 636 return -EINVAL; 637 } 638 if (kstrtouint(str + 1, 10, &level)) 639 return -EINVAL; 640 641 if (!level || level > zstd_max_clevel()) { 642 f2fs_info(sbi, "invalid zstd compress level: %d", level); 643 return -EINVAL; 644 } 645 646 F2FS_OPTION(sbi).compress_level = level; 647 return 0; 648 } 649 #endif 650 #endif 651 652 static int parse_options(struct super_block *sb, char *options, bool is_remount) 653 { 654 struct f2fs_sb_info *sbi = F2FS_SB(sb); 655 substring_t args[MAX_OPT_ARGS]; 656 #ifdef CONFIG_F2FS_FS_COMPRESSION 657 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 658 unsigned char (*noext)[F2FS_EXTENSION_LEN]; 659 int ext_cnt, noext_cnt; 660 #endif 661 char *p, *name; 662 int arg = 0; 663 kuid_t uid; 664 kgid_t gid; 665 int ret; 666 667 if (!options) 668 goto default_check; 669 670 while ((p = strsep(&options, ",")) != NULL) { 671 int token; 672 673 if (!*p) 674 continue; 675 /* 676 * Initialize args struct so we know whether arg was 677 * found; some options take optional arguments. 678 */ 679 args[0].to = args[0].from = NULL; 680 token = match_token(p, f2fs_tokens, args); 681 682 switch (token) { 683 case Opt_gc_background: 684 name = match_strdup(&args[0]); 685 686 if (!name) 687 return -ENOMEM; 688 if (!strcmp(name, "on")) { 689 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 690 } else if (!strcmp(name, "off")) { 691 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 692 } else if (!strcmp(name, "sync")) { 693 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 694 } else { 695 kfree(name); 696 return -EINVAL; 697 } 698 kfree(name); 699 break; 700 case Opt_disable_roll_forward: 701 set_opt(sbi, DISABLE_ROLL_FORWARD); 702 break; 703 case Opt_norecovery: 704 /* this option mounts f2fs with ro */ 705 set_opt(sbi, NORECOVERY); 706 if (!f2fs_readonly(sb)) 707 return -EINVAL; 708 break; 709 case Opt_discard: 710 if (!f2fs_hw_support_discard(sbi)) { 711 f2fs_warn(sbi, "device does not support discard"); 712 break; 713 } 714 set_opt(sbi, DISCARD); 715 break; 716 case Opt_nodiscard: 717 if (f2fs_hw_should_discard(sbi)) { 718 f2fs_warn(sbi, "discard is required for zoned block devices"); 719 return -EINVAL; 720 } 721 clear_opt(sbi, DISCARD); 722 break; 723 case Opt_noheap: 724 set_opt(sbi, NOHEAP); 725 break; 726 case Opt_heap: 727 clear_opt(sbi, NOHEAP); 728 break; 729 #ifdef CONFIG_F2FS_FS_XATTR 730 case Opt_user_xattr: 731 set_opt(sbi, XATTR_USER); 732 break; 733 case Opt_nouser_xattr: 734 clear_opt(sbi, XATTR_USER); 735 break; 736 case Opt_inline_xattr: 737 set_opt(sbi, INLINE_XATTR); 738 break; 739 case Opt_noinline_xattr: 740 clear_opt(sbi, INLINE_XATTR); 741 break; 742 case Opt_inline_xattr_size: 743 if (args->from && match_int(args, &arg)) 744 return -EINVAL; 745 set_opt(sbi, INLINE_XATTR_SIZE); 746 F2FS_OPTION(sbi).inline_xattr_size = arg; 747 break; 748 #else 749 case Opt_user_xattr: 750 f2fs_info(sbi, "user_xattr options not supported"); 751 break; 752 case Opt_nouser_xattr: 753 f2fs_info(sbi, "nouser_xattr options not supported"); 754 break; 755 case Opt_inline_xattr: 756 f2fs_info(sbi, "inline_xattr options not supported"); 757 break; 758 case Opt_noinline_xattr: 759 f2fs_info(sbi, "noinline_xattr options not supported"); 760 break; 761 #endif 762 #ifdef CONFIG_F2FS_FS_POSIX_ACL 763 case Opt_acl: 764 set_opt(sbi, POSIX_ACL); 765 break; 766 case Opt_noacl: 767 clear_opt(sbi, POSIX_ACL); 768 break; 769 #else 770 case Opt_acl: 771 f2fs_info(sbi, "acl options not supported"); 772 break; 773 case Opt_noacl: 774 f2fs_info(sbi, "noacl options not supported"); 775 break; 776 #endif 777 case Opt_active_logs: 778 if (args->from && match_int(args, &arg)) 779 return -EINVAL; 780 if (arg != 2 && arg != 4 && 781 arg != NR_CURSEG_PERSIST_TYPE) 782 return -EINVAL; 783 F2FS_OPTION(sbi).active_logs = arg; 784 break; 785 case Opt_disable_ext_identify: 786 set_opt(sbi, DISABLE_EXT_IDENTIFY); 787 break; 788 case Opt_inline_data: 789 set_opt(sbi, INLINE_DATA); 790 break; 791 case Opt_inline_dentry: 792 set_opt(sbi, INLINE_DENTRY); 793 break; 794 case Opt_noinline_dentry: 795 clear_opt(sbi, INLINE_DENTRY); 796 break; 797 case Opt_flush_merge: 798 set_opt(sbi, FLUSH_MERGE); 799 break; 800 case Opt_noflush_merge: 801 clear_opt(sbi, FLUSH_MERGE); 802 break; 803 case Opt_nobarrier: 804 set_opt(sbi, NOBARRIER); 805 break; 806 case Opt_barrier: 807 clear_opt(sbi, NOBARRIER); 808 break; 809 case Opt_fastboot: 810 set_opt(sbi, FASTBOOT); 811 break; 812 case Opt_extent_cache: 813 set_opt(sbi, READ_EXTENT_CACHE); 814 break; 815 case Opt_noextent_cache: 816 clear_opt(sbi, READ_EXTENT_CACHE); 817 break; 818 case Opt_noinline_data: 819 clear_opt(sbi, INLINE_DATA); 820 break; 821 case Opt_data_flush: 822 set_opt(sbi, DATA_FLUSH); 823 break; 824 case Opt_reserve_root: 825 if (args->from && match_int(args, &arg)) 826 return -EINVAL; 827 if (test_opt(sbi, RESERVE_ROOT)) { 828 f2fs_info(sbi, "Preserve previous reserve_root=%u", 829 F2FS_OPTION(sbi).root_reserved_blocks); 830 } else { 831 F2FS_OPTION(sbi).root_reserved_blocks = arg; 832 set_opt(sbi, RESERVE_ROOT); 833 } 834 break; 835 case Opt_resuid: 836 if (args->from && match_int(args, &arg)) 837 return -EINVAL; 838 uid = make_kuid(current_user_ns(), arg); 839 if (!uid_valid(uid)) { 840 f2fs_err(sbi, "Invalid uid value %d", arg); 841 return -EINVAL; 842 } 843 F2FS_OPTION(sbi).s_resuid = uid; 844 break; 845 case Opt_resgid: 846 if (args->from && match_int(args, &arg)) 847 return -EINVAL; 848 gid = make_kgid(current_user_ns(), arg); 849 if (!gid_valid(gid)) { 850 f2fs_err(sbi, "Invalid gid value %d", arg); 851 return -EINVAL; 852 } 853 F2FS_OPTION(sbi).s_resgid = gid; 854 break; 855 case Opt_mode: 856 name = match_strdup(&args[0]); 857 858 if (!name) 859 return -ENOMEM; 860 if (!strcmp(name, "adaptive")) { 861 if (f2fs_sb_has_blkzoned(sbi)) { 862 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature"); 863 kfree(name); 864 return -EINVAL; 865 } 866 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 867 } else if (!strcmp(name, "lfs")) { 868 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 869 } else if (!strcmp(name, "fragment:segment")) { 870 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_SEG; 871 } else if (!strcmp(name, "fragment:block")) { 872 F2FS_OPTION(sbi).fs_mode = FS_MODE_FRAGMENT_BLK; 873 } else { 874 kfree(name); 875 return -EINVAL; 876 } 877 kfree(name); 878 break; 879 case Opt_io_size_bits: 880 if (args->from && match_int(args, &arg)) 881 return -EINVAL; 882 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) { 883 f2fs_warn(sbi, "Not support %ld, larger than %d", 884 BIT(arg), BIO_MAX_VECS); 885 return -EINVAL; 886 } 887 F2FS_OPTION(sbi).write_io_size_bits = arg; 888 break; 889 #ifdef CONFIG_F2FS_FAULT_INJECTION 890 case Opt_fault_injection: 891 if (args->from && match_int(args, &arg)) 892 return -EINVAL; 893 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE); 894 set_opt(sbi, FAULT_INJECTION); 895 break; 896 897 case Opt_fault_type: 898 if (args->from && match_int(args, &arg)) 899 return -EINVAL; 900 f2fs_build_fault_attr(sbi, 0, arg); 901 set_opt(sbi, FAULT_INJECTION); 902 break; 903 #else 904 case Opt_fault_injection: 905 f2fs_info(sbi, "fault_injection options not supported"); 906 break; 907 908 case Opt_fault_type: 909 f2fs_info(sbi, "fault_type options not supported"); 910 break; 911 #endif 912 case Opt_lazytime: 913 sb->s_flags |= SB_LAZYTIME; 914 break; 915 case Opt_nolazytime: 916 sb->s_flags &= ~SB_LAZYTIME; 917 break; 918 #ifdef CONFIG_QUOTA 919 case Opt_quota: 920 case Opt_usrquota: 921 set_opt(sbi, USRQUOTA); 922 break; 923 case Opt_grpquota: 924 set_opt(sbi, GRPQUOTA); 925 break; 926 case Opt_prjquota: 927 set_opt(sbi, PRJQUOTA); 928 break; 929 case Opt_usrjquota: 930 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 931 if (ret) 932 return ret; 933 break; 934 case Opt_grpjquota: 935 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 936 if (ret) 937 return ret; 938 break; 939 case Opt_prjjquota: 940 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 941 if (ret) 942 return ret; 943 break; 944 case Opt_offusrjquota: 945 ret = f2fs_clear_qf_name(sb, USRQUOTA); 946 if (ret) 947 return ret; 948 break; 949 case Opt_offgrpjquota: 950 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 951 if (ret) 952 return ret; 953 break; 954 case Opt_offprjjquota: 955 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 956 if (ret) 957 return ret; 958 break; 959 case Opt_jqfmt_vfsold: 960 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 961 break; 962 case Opt_jqfmt_vfsv0: 963 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 964 break; 965 case Opt_jqfmt_vfsv1: 966 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 967 break; 968 case Opt_noquota: 969 clear_opt(sbi, QUOTA); 970 clear_opt(sbi, USRQUOTA); 971 clear_opt(sbi, GRPQUOTA); 972 clear_opt(sbi, PRJQUOTA); 973 break; 974 #else 975 case Opt_quota: 976 case Opt_usrquota: 977 case Opt_grpquota: 978 case Opt_prjquota: 979 case Opt_usrjquota: 980 case Opt_grpjquota: 981 case Opt_prjjquota: 982 case Opt_offusrjquota: 983 case Opt_offgrpjquota: 984 case Opt_offprjjquota: 985 case Opt_jqfmt_vfsold: 986 case Opt_jqfmt_vfsv0: 987 case Opt_jqfmt_vfsv1: 988 case Opt_noquota: 989 f2fs_info(sbi, "quota operations not supported"); 990 break; 991 #endif 992 case Opt_alloc: 993 name = match_strdup(&args[0]); 994 if (!name) 995 return -ENOMEM; 996 997 if (!strcmp(name, "default")) { 998 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 999 } else if (!strcmp(name, "reuse")) { 1000 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 1001 } else { 1002 kfree(name); 1003 return -EINVAL; 1004 } 1005 kfree(name); 1006 break; 1007 case Opt_fsync: 1008 name = match_strdup(&args[0]); 1009 if (!name) 1010 return -ENOMEM; 1011 if (!strcmp(name, "posix")) { 1012 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1013 } else if (!strcmp(name, "strict")) { 1014 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 1015 } else if (!strcmp(name, "nobarrier")) { 1016 F2FS_OPTION(sbi).fsync_mode = 1017 FSYNC_MODE_NOBARRIER; 1018 } else { 1019 kfree(name); 1020 return -EINVAL; 1021 } 1022 kfree(name); 1023 break; 1024 case Opt_test_dummy_encryption: 1025 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], 1026 is_remount); 1027 if (ret) 1028 return ret; 1029 break; 1030 case Opt_inlinecrypt: 1031 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 1032 sb->s_flags |= SB_INLINECRYPT; 1033 #else 1034 f2fs_info(sbi, "inline encryption not supported"); 1035 #endif 1036 break; 1037 case Opt_checkpoint_disable_cap_perc: 1038 if (args->from && match_int(args, &arg)) 1039 return -EINVAL; 1040 if (arg < 0 || arg > 100) 1041 return -EINVAL; 1042 F2FS_OPTION(sbi).unusable_cap_perc = arg; 1043 set_opt(sbi, DISABLE_CHECKPOINT); 1044 break; 1045 case Opt_checkpoint_disable_cap: 1046 if (args->from && match_int(args, &arg)) 1047 return -EINVAL; 1048 F2FS_OPTION(sbi).unusable_cap = arg; 1049 set_opt(sbi, DISABLE_CHECKPOINT); 1050 break; 1051 case Opt_checkpoint_disable: 1052 set_opt(sbi, DISABLE_CHECKPOINT); 1053 break; 1054 case Opt_checkpoint_enable: 1055 clear_opt(sbi, DISABLE_CHECKPOINT); 1056 break; 1057 case Opt_checkpoint_merge: 1058 set_opt(sbi, MERGE_CHECKPOINT); 1059 break; 1060 case Opt_nocheckpoint_merge: 1061 clear_opt(sbi, MERGE_CHECKPOINT); 1062 break; 1063 #ifdef CONFIG_F2FS_FS_COMPRESSION 1064 case Opt_compress_algorithm: 1065 if (!f2fs_sb_has_compression(sbi)) { 1066 f2fs_info(sbi, "Image doesn't support compression"); 1067 break; 1068 } 1069 name = match_strdup(&args[0]); 1070 if (!name) 1071 return -ENOMEM; 1072 if (!strcmp(name, "lzo")) { 1073 #ifdef CONFIG_F2FS_FS_LZO 1074 F2FS_OPTION(sbi).compress_level = 0; 1075 F2FS_OPTION(sbi).compress_algorithm = 1076 COMPRESS_LZO; 1077 #else 1078 f2fs_info(sbi, "kernel doesn't support lzo compression"); 1079 #endif 1080 } else if (!strncmp(name, "lz4", 3)) { 1081 #ifdef CONFIG_F2FS_FS_LZ4 1082 ret = f2fs_set_lz4hc_level(sbi, name); 1083 if (ret) { 1084 kfree(name); 1085 return -EINVAL; 1086 } 1087 F2FS_OPTION(sbi).compress_algorithm = 1088 COMPRESS_LZ4; 1089 #else 1090 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 1091 #endif 1092 } else if (!strncmp(name, "zstd", 4)) { 1093 #ifdef CONFIG_F2FS_FS_ZSTD 1094 ret = f2fs_set_zstd_level(sbi, name); 1095 if (ret) { 1096 kfree(name); 1097 return -EINVAL; 1098 } 1099 F2FS_OPTION(sbi).compress_algorithm = 1100 COMPRESS_ZSTD; 1101 #else 1102 f2fs_info(sbi, "kernel doesn't support zstd compression"); 1103 #endif 1104 } else if (!strcmp(name, "lzo-rle")) { 1105 #ifdef CONFIG_F2FS_FS_LZORLE 1106 F2FS_OPTION(sbi).compress_level = 0; 1107 F2FS_OPTION(sbi).compress_algorithm = 1108 COMPRESS_LZORLE; 1109 #else 1110 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1111 #endif 1112 } else { 1113 kfree(name); 1114 return -EINVAL; 1115 } 1116 kfree(name); 1117 break; 1118 case Opt_compress_log_size: 1119 if (!f2fs_sb_has_compression(sbi)) { 1120 f2fs_info(sbi, "Image doesn't support compression"); 1121 break; 1122 } 1123 if (args->from && match_int(args, &arg)) 1124 return -EINVAL; 1125 if (arg < MIN_COMPRESS_LOG_SIZE || 1126 arg > MAX_COMPRESS_LOG_SIZE) { 1127 f2fs_err(sbi, 1128 "Compress cluster log size is out of range"); 1129 return -EINVAL; 1130 } 1131 F2FS_OPTION(sbi).compress_log_size = arg; 1132 break; 1133 case Opt_compress_extension: 1134 if (!f2fs_sb_has_compression(sbi)) { 1135 f2fs_info(sbi, "Image doesn't support compression"); 1136 break; 1137 } 1138 name = match_strdup(&args[0]); 1139 if (!name) 1140 return -ENOMEM; 1141 1142 ext = F2FS_OPTION(sbi).extensions; 1143 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1144 1145 if (strlen(name) >= F2FS_EXTENSION_LEN || 1146 ext_cnt >= COMPRESS_EXT_NUM) { 1147 f2fs_err(sbi, 1148 "invalid extension length/number"); 1149 kfree(name); 1150 return -EINVAL; 1151 } 1152 1153 strcpy(ext[ext_cnt], name); 1154 F2FS_OPTION(sbi).compress_ext_cnt++; 1155 kfree(name); 1156 break; 1157 case Opt_nocompress_extension: 1158 if (!f2fs_sb_has_compression(sbi)) { 1159 f2fs_info(sbi, "Image doesn't support compression"); 1160 break; 1161 } 1162 name = match_strdup(&args[0]); 1163 if (!name) 1164 return -ENOMEM; 1165 1166 noext = F2FS_OPTION(sbi).noextensions; 1167 noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; 1168 1169 if (strlen(name) >= F2FS_EXTENSION_LEN || 1170 noext_cnt >= COMPRESS_EXT_NUM) { 1171 f2fs_err(sbi, 1172 "invalid extension length/number"); 1173 kfree(name); 1174 return -EINVAL; 1175 } 1176 1177 strcpy(noext[noext_cnt], name); 1178 F2FS_OPTION(sbi).nocompress_ext_cnt++; 1179 kfree(name); 1180 break; 1181 case Opt_compress_chksum: 1182 if (!f2fs_sb_has_compression(sbi)) { 1183 f2fs_info(sbi, "Image doesn't support compression"); 1184 break; 1185 } 1186 F2FS_OPTION(sbi).compress_chksum = true; 1187 break; 1188 case Opt_compress_mode: 1189 if (!f2fs_sb_has_compression(sbi)) { 1190 f2fs_info(sbi, "Image doesn't support compression"); 1191 break; 1192 } 1193 name = match_strdup(&args[0]); 1194 if (!name) 1195 return -ENOMEM; 1196 if (!strcmp(name, "fs")) { 1197 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1198 } else if (!strcmp(name, "user")) { 1199 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1200 } else { 1201 kfree(name); 1202 return -EINVAL; 1203 } 1204 kfree(name); 1205 break; 1206 case Opt_compress_cache: 1207 if (!f2fs_sb_has_compression(sbi)) { 1208 f2fs_info(sbi, "Image doesn't support compression"); 1209 break; 1210 } 1211 set_opt(sbi, COMPRESS_CACHE); 1212 break; 1213 #else 1214 case Opt_compress_algorithm: 1215 case Opt_compress_log_size: 1216 case Opt_compress_extension: 1217 case Opt_nocompress_extension: 1218 case Opt_compress_chksum: 1219 case Opt_compress_mode: 1220 case Opt_compress_cache: 1221 f2fs_info(sbi, "compression options not supported"); 1222 break; 1223 #endif 1224 case Opt_atgc: 1225 set_opt(sbi, ATGC); 1226 break; 1227 case Opt_gc_merge: 1228 set_opt(sbi, GC_MERGE); 1229 break; 1230 case Opt_nogc_merge: 1231 clear_opt(sbi, GC_MERGE); 1232 break; 1233 case Opt_discard_unit: 1234 name = match_strdup(&args[0]); 1235 if (!name) 1236 return -ENOMEM; 1237 if (!strcmp(name, "block")) { 1238 F2FS_OPTION(sbi).discard_unit = 1239 DISCARD_UNIT_BLOCK; 1240 } else if (!strcmp(name, "segment")) { 1241 F2FS_OPTION(sbi).discard_unit = 1242 DISCARD_UNIT_SEGMENT; 1243 } else if (!strcmp(name, "section")) { 1244 F2FS_OPTION(sbi).discard_unit = 1245 DISCARD_UNIT_SECTION; 1246 } else { 1247 kfree(name); 1248 return -EINVAL; 1249 } 1250 kfree(name); 1251 break; 1252 case Opt_memory_mode: 1253 name = match_strdup(&args[0]); 1254 if (!name) 1255 return -ENOMEM; 1256 if (!strcmp(name, "normal")) { 1257 F2FS_OPTION(sbi).memory_mode = 1258 MEMORY_MODE_NORMAL; 1259 } else if (!strcmp(name, "low")) { 1260 F2FS_OPTION(sbi).memory_mode = 1261 MEMORY_MODE_LOW; 1262 } else { 1263 kfree(name); 1264 return -EINVAL; 1265 } 1266 kfree(name); 1267 break; 1268 case Opt_age_extent_cache: 1269 set_opt(sbi, AGE_EXTENT_CACHE); 1270 break; 1271 default: 1272 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1273 p); 1274 return -EINVAL; 1275 } 1276 } 1277 default_check: 1278 #ifdef CONFIG_QUOTA 1279 if (f2fs_check_quota_options(sbi)) 1280 return -EINVAL; 1281 #else 1282 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1283 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1284 return -EINVAL; 1285 } 1286 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1287 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1288 return -EINVAL; 1289 } 1290 #endif 1291 #if !IS_ENABLED(CONFIG_UNICODE) 1292 if (f2fs_sb_has_casefold(sbi)) { 1293 f2fs_err(sbi, 1294 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1295 return -EINVAL; 1296 } 1297 #endif 1298 /* 1299 * The BLKZONED feature indicates that the drive was formatted with 1300 * zone alignment optimization. This is optional for host-aware 1301 * devices, but mandatory for host-managed zoned block devices. 1302 */ 1303 if (f2fs_sb_has_blkzoned(sbi)) { 1304 #ifdef CONFIG_BLK_DEV_ZONED 1305 if (F2FS_OPTION(sbi).discard_unit != 1306 DISCARD_UNIT_SECTION) { 1307 f2fs_info(sbi, "Zoned block device doesn't need small discard, set discard_unit=section by default"); 1308 F2FS_OPTION(sbi).discard_unit = 1309 DISCARD_UNIT_SECTION; 1310 } 1311 #else 1312 f2fs_err(sbi, "Zoned block device support is not enabled"); 1313 return -EINVAL; 1314 #endif 1315 } 1316 1317 #ifdef CONFIG_F2FS_FS_COMPRESSION 1318 if (f2fs_test_compress_extension(sbi)) { 1319 f2fs_err(sbi, "invalid compress or nocompress extension"); 1320 return -EINVAL; 1321 } 1322 #endif 1323 1324 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) { 1325 f2fs_err(sbi, "Should set mode=lfs with %luKB-sized IO", 1326 F2FS_IO_SIZE_KB(sbi)); 1327 return -EINVAL; 1328 } 1329 1330 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1331 int min_size, max_size; 1332 1333 if (!f2fs_sb_has_extra_attr(sbi) || 1334 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1335 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1336 return -EINVAL; 1337 } 1338 if (!test_opt(sbi, INLINE_XATTR)) { 1339 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1340 return -EINVAL; 1341 } 1342 1343 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32); 1344 max_size = MAX_INLINE_XATTR_SIZE; 1345 1346 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1347 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1348 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1349 min_size, max_size); 1350 return -EINVAL; 1351 } 1352 } 1353 1354 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) { 1355 f2fs_err(sbi, "LFS is not compatible with checkpoint=disable"); 1356 return -EINVAL; 1357 } 1358 1359 if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { 1360 f2fs_err(sbi, "LFS is not compatible with ATGC"); 1361 return -EINVAL; 1362 } 1363 1364 if (f2fs_is_readonly(sbi) && test_opt(sbi, FLUSH_MERGE)) { 1365 f2fs_err(sbi, "FLUSH_MERGE not compatible with readonly mode"); 1366 return -EINVAL; 1367 } 1368 1369 if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { 1370 f2fs_err(sbi, "Allow to mount readonly mode only"); 1371 return -EROFS; 1372 } 1373 return 0; 1374 } 1375 1376 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1377 { 1378 struct f2fs_inode_info *fi; 1379 1380 if (time_to_inject(F2FS_SB(sb), FAULT_SLAB_ALLOC)) 1381 return NULL; 1382 1383 fi = alloc_inode_sb(sb, f2fs_inode_cachep, GFP_F2FS_ZERO); 1384 if (!fi) 1385 return NULL; 1386 1387 init_once((void *) fi); 1388 1389 /* Initialize f2fs-specific inode info */ 1390 atomic_set(&fi->dirty_pages, 0); 1391 atomic_set(&fi->i_compr_blocks, 0); 1392 init_f2fs_rwsem(&fi->i_sem); 1393 spin_lock_init(&fi->i_size_lock); 1394 INIT_LIST_HEAD(&fi->dirty_list); 1395 INIT_LIST_HEAD(&fi->gdirty_list); 1396 init_f2fs_rwsem(&fi->i_gc_rwsem[READ]); 1397 init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]); 1398 init_f2fs_rwsem(&fi->i_xattr_sem); 1399 1400 /* Will be used by directory only */ 1401 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1402 1403 return &fi->vfs_inode; 1404 } 1405 1406 static int f2fs_drop_inode(struct inode *inode) 1407 { 1408 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1409 int ret; 1410 1411 /* 1412 * during filesystem shutdown, if checkpoint is disabled, 1413 * drop useless meta/node dirty pages. 1414 */ 1415 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1416 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1417 inode->i_ino == F2FS_META_INO(sbi)) { 1418 trace_f2fs_drop_inode(inode, 1); 1419 return 1; 1420 } 1421 } 1422 1423 /* 1424 * This is to avoid a deadlock condition like below. 1425 * writeback_single_inode(inode) 1426 * - f2fs_write_data_page 1427 * - f2fs_gc -> iput -> evict 1428 * - inode_wait_for_writeback(inode) 1429 */ 1430 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1431 if (!inode->i_nlink && !is_bad_inode(inode)) { 1432 /* to avoid evict_inode call simultaneously */ 1433 atomic_inc(&inode->i_count); 1434 spin_unlock(&inode->i_lock); 1435 1436 /* should remain fi->extent_tree for writepage */ 1437 f2fs_destroy_extent_node(inode); 1438 1439 sb_start_intwrite(inode->i_sb); 1440 f2fs_i_size_write(inode, 0); 1441 1442 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1443 inode, NULL, 0, DATA); 1444 truncate_inode_pages_final(inode->i_mapping); 1445 1446 if (F2FS_HAS_BLOCKS(inode)) 1447 f2fs_truncate(inode); 1448 1449 sb_end_intwrite(inode->i_sb); 1450 1451 spin_lock(&inode->i_lock); 1452 atomic_dec(&inode->i_count); 1453 } 1454 trace_f2fs_drop_inode(inode, 0); 1455 return 0; 1456 } 1457 ret = generic_drop_inode(inode); 1458 if (!ret) 1459 ret = fscrypt_drop_inode(inode); 1460 trace_f2fs_drop_inode(inode, ret); 1461 return ret; 1462 } 1463 1464 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1465 { 1466 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1467 int ret = 0; 1468 1469 spin_lock(&sbi->inode_lock[DIRTY_META]); 1470 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1471 ret = 1; 1472 } else { 1473 set_inode_flag(inode, FI_DIRTY_INODE); 1474 stat_inc_dirty_inode(sbi, DIRTY_META); 1475 } 1476 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1477 list_add_tail(&F2FS_I(inode)->gdirty_list, 1478 &sbi->inode_list[DIRTY_META]); 1479 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1480 } 1481 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1482 return ret; 1483 } 1484 1485 void f2fs_inode_synced(struct inode *inode) 1486 { 1487 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1488 1489 spin_lock(&sbi->inode_lock[DIRTY_META]); 1490 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1491 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1492 return; 1493 } 1494 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1495 list_del_init(&F2FS_I(inode)->gdirty_list); 1496 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1497 } 1498 clear_inode_flag(inode, FI_DIRTY_INODE); 1499 clear_inode_flag(inode, FI_AUTO_RECOVER); 1500 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1501 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1502 } 1503 1504 /* 1505 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1506 * 1507 * We should call set_dirty_inode to write the dirty inode through write_inode. 1508 */ 1509 static void f2fs_dirty_inode(struct inode *inode, int flags) 1510 { 1511 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1512 1513 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1514 inode->i_ino == F2FS_META_INO(sbi)) 1515 return; 1516 1517 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1518 clear_inode_flag(inode, FI_AUTO_RECOVER); 1519 1520 f2fs_inode_dirtied(inode, false); 1521 } 1522 1523 static void f2fs_free_inode(struct inode *inode) 1524 { 1525 fscrypt_free_inode(inode); 1526 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1527 } 1528 1529 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1530 { 1531 percpu_counter_destroy(&sbi->total_valid_inode_count); 1532 percpu_counter_destroy(&sbi->rf_node_block_count); 1533 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1534 } 1535 1536 static void destroy_device_list(struct f2fs_sb_info *sbi) 1537 { 1538 int i; 1539 1540 for (i = 0; i < sbi->s_ndevs; i++) { 1541 blkdev_put(FDEV(i).bdev, FMODE_EXCL); 1542 #ifdef CONFIG_BLK_DEV_ZONED 1543 kvfree(FDEV(i).blkz_seq); 1544 #endif 1545 } 1546 kvfree(sbi->devs); 1547 } 1548 1549 static void f2fs_put_super(struct super_block *sb) 1550 { 1551 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1552 int i; 1553 bool done; 1554 1555 /* unregister procfs/sysfs entries in advance to avoid race case */ 1556 f2fs_unregister_sysfs(sbi); 1557 1558 f2fs_quota_off_umount(sb); 1559 1560 /* prevent remaining shrinker jobs */ 1561 mutex_lock(&sbi->umount_mutex); 1562 1563 /* 1564 * flush all issued checkpoints and stop checkpoint issue thread. 1565 * after then, all checkpoints should be done by each process context. 1566 */ 1567 f2fs_stop_ckpt_thread(sbi); 1568 1569 /* 1570 * We don't need to do checkpoint when superblock is clean. 1571 * But, the previous checkpoint was not done by umount, it needs to do 1572 * clean checkpoint again. 1573 */ 1574 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1575 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1576 struct cp_control cpc = { 1577 .reason = CP_UMOUNT, 1578 }; 1579 f2fs_write_checkpoint(sbi, &cpc); 1580 } 1581 1582 /* be sure to wait for any on-going discard commands */ 1583 done = f2fs_issue_discard_timeout(sbi); 1584 if (f2fs_realtime_discard_enable(sbi) && !sbi->discard_blks && done) { 1585 struct cp_control cpc = { 1586 .reason = CP_UMOUNT | CP_TRIMMED, 1587 }; 1588 f2fs_write_checkpoint(sbi, &cpc); 1589 } 1590 1591 /* 1592 * normally superblock is clean, so we need to release this. 1593 * In addition, EIO will skip do checkpoint, we need this as well. 1594 */ 1595 f2fs_release_ino_entry(sbi, true); 1596 1597 f2fs_leave_shrinker(sbi); 1598 mutex_unlock(&sbi->umount_mutex); 1599 1600 /* our cp_error case, we can wait for any writeback page */ 1601 f2fs_flush_merged_writes(sbi); 1602 1603 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1604 1605 f2fs_bug_on(sbi, sbi->fsync_node_num); 1606 1607 f2fs_destroy_compress_inode(sbi); 1608 1609 iput(sbi->node_inode); 1610 sbi->node_inode = NULL; 1611 1612 iput(sbi->meta_inode); 1613 sbi->meta_inode = NULL; 1614 1615 /* 1616 * iput() can update stat information, if f2fs_write_checkpoint() 1617 * above failed with error. 1618 */ 1619 f2fs_destroy_stats(sbi); 1620 1621 /* destroy f2fs internal modules */ 1622 f2fs_destroy_node_manager(sbi); 1623 f2fs_destroy_segment_manager(sbi); 1624 1625 f2fs_destroy_post_read_wq(sbi); 1626 1627 kvfree(sbi->ckpt); 1628 1629 sb->s_fs_info = NULL; 1630 if (sbi->s_chksum_driver) 1631 crypto_free_shash(sbi->s_chksum_driver); 1632 kfree(sbi->raw_super); 1633 1634 destroy_device_list(sbi); 1635 f2fs_destroy_page_array_cache(sbi); 1636 f2fs_destroy_xattr_caches(sbi); 1637 mempool_destroy(sbi->write_io_dummy); 1638 #ifdef CONFIG_QUOTA 1639 for (i = 0; i < MAXQUOTAS; i++) 1640 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1641 #endif 1642 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1643 destroy_percpu_info(sbi); 1644 f2fs_destroy_iostat(sbi); 1645 for (i = 0; i < NR_PAGE_TYPE; i++) 1646 kvfree(sbi->write_io[i]); 1647 #if IS_ENABLED(CONFIG_UNICODE) 1648 utf8_unload(sb->s_encoding); 1649 #endif 1650 kfree(sbi); 1651 } 1652 1653 int f2fs_sync_fs(struct super_block *sb, int sync) 1654 { 1655 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1656 int err = 0; 1657 1658 if (unlikely(f2fs_cp_error(sbi))) 1659 return 0; 1660 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1661 return 0; 1662 1663 trace_f2fs_sync_fs(sb, sync); 1664 1665 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1666 return -EAGAIN; 1667 1668 if (sync) 1669 err = f2fs_issue_checkpoint(sbi); 1670 1671 return err; 1672 } 1673 1674 static int f2fs_freeze(struct super_block *sb) 1675 { 1676 if (f2fs_readonly(sb)) 1677 return 0; 1678 1679 /* IO error happened before */ 1680 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1681 return -EIO; 1682 1683 /* must be clean, since sync_filesystem() was already called */ 1684 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1685 return -EINVAL; 1686 1687 /* Let's flush checkpoints and stop the thread. */ 1688 f2fs_flush_ckpt_thread(F2FS_SB(sb)); 1689 1690 /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ 1691 set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1692 return 0; 1693 } 1694 1695 static int f2fs_unfreeze(struct super_block *sb) 1696 { 1697 clear_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); 1698 return 0; 1699 } 1700 1701 #ifdef CONFIG_QUOTA 1702 static int f2fs_statfs_project(struct super_block *sb, 1703 kprojid_t projid, struct kstatfs *buf) 1704 { 1705 struct kqid qid; 1706 struct dquot *dquot; 1707 u64 limit; 1708 u64 curblock; 1709 1710 qid = make_kqid_projid(projid); 1711 dquot = dqget(sb, qid); 1712 if (IS_ERR(dquot)) 1713 return PTR_ERR(dquot); 1714 spin_lock(&dquot->dq_dqb_lock); 1715 1716 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1717 dquot->dq_dqb.dqb_bhardlimit); 1718 if (limit) 1719 limit >>= sb->s_blocksize_bits; 1720 1721 if (limit && buf->f_blocks > limit) { 1722 curblock = (dquot->dq_dqb.dqb_curspace + 1723 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1724 buf->f_blocks = limit; 1725 buf->f_bfree = buf->f_bavail = 1726 (buf->f_blocks > curblock) ? 1727 (buf->f_blocks - curblock) : 0; 1728 } 1729 1730 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1731 dquot->dq_dqb.dqb_ihardlimit); 1732 1733 if (limit && buf->f_files > limit) { 1734 buf->f_files = limit; 1735 buf->f_ffree = 1736 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1737 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1738 } 1739 1740 spin_unlock(&dquot->dq_dqb_lock); 1741 dqput(dquot); 1742 return 0; 1743 } 1744 #endif 1745 1746 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1747 { 1748 struct super_block *sb = dentry->d_sb; 1749 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1750 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1751 block_t total_count, user_block_count, start_count; 1752 u64 avail_node_count; 1753 unsigned int total_valid_node_count; 1754 1755 total_count = le64_to_cpu(sbi->raw_super->block_count); 1756 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1757 buf->f_type = F2FS_SUPER_MAGIC; 1758 buf->f_bsize = sbi->blocksize; 1759 1760 buf->f_blocks = total_count - start_count; 1761 1762 spin_lock(&sbi->stat_lock); 1763 1764 user_block_count = sbi->user_block_count; 1765 total_valid_node_count = valid_node_count(sbi); 1766 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1767 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1768 sbi->current_reserved_blocks; 1769 1770 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1771 buf->f_bfree = 0; 1772 else 1773 buf->f_bfree -= sbi->unusable_block_count; 1774 spin_unlock(&sbi->stat_lock); 1775 1776 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1777 buf->f_bavail = buf->f_bfree - 1778 F2FS_OPTION(sbi).root_reserved_blocks; 1779 else 1780 buf->f_bavail = 0; 1781 1782 if (avail_node_count > user_block_count) { 1783 buf->f_files = user_block_count; 1784 buf->f_ffree = buf->f_bavail; 1785 } else { 1786 buf->f_files = avail_node_count; 1787 buf->f_ffree = min(avail_node_count - total_valid_node_count, 1788 buf->f_bavail); 1789 } 1790 1791 buf->f_namelen = F2FS_NAME_LEN; 1792 buf->f_fsid = u64_to_fsid(id); 1793 1794 #ifdef CONFIG_QUOTA 1795 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1796 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1797 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1798 } 1799 #endif 1800 return 0; 1801 } 1802 1803 static inline void f2fs_show_quota_options(struct seq_file *seq, 1804 struct super_block *sb) 1805 { 1806 #ifdef CONFIG_QUOTA 1807 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1808 1809 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1810 char *fmtname = ""; 1811 1812 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1813 case QFMT_VFS_OLD: 1814 fmtname = "vfsold"; 1815 break; 1816 case QFMT_VFS_V0: 1817 fmtname = "vfsv0"; 1818 break; 1819 case QFMT_VFS_V1: 1820 fmtname = "vfsv1"; 1821 break; 1822 } 1823 seq_printf(seq, ",jqfmt=%s", fmtname); 1824 } 1825 1826 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1827 seq_show_option(seq, "usrjquota", 1828 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1829 1830 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1831 seq_show_option(seq, "grpjquota", 1832 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1833 1834 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1835 seq_show_option(seq, "prjjquota", 1836 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1837 #endif 1838 } 1839 1840 #ifdef CONFIG_F2FS_FS_COMPRESSION 1841 static inline void f2fs_show_compress_options(struct seq_file *seq, 1842 struct super_block *sb) 1843 { 1844 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1845 char *algtype = ""; 1846 int i; 1847 1848 if (!f2fs_sb_has_compression(sbi)) 1849 return; 1850 1851 switch (F2FS_OPTION(sbi).compress_algorithm) { 1852 case COMPRESS_LZO: 1853 algtype = "lzo"; 1854 break; 1855 case COMPRESS_LZ4: 1856 algtype = "lz4"; 1857 break; 1858 case COMPRESS_ZSTD: 1859 algtype = "zstd"; 1860 break; 1861 case COMPRESS_LZORLE: 1862 algtype = "lzo-rle"; 1863 break; 1864 } 1865 seq_printf(seq, ",compress_algorithm=%s", algtype); 1866 1867 if (F2FS_OPTION(sbi).compress_level) 1868 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1869 1870 seq_printf(seq, ",compress_log_size=%u", 1871 F2FS_OPTION(sbi).compress_log_size); 1872 1873 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1874 seq_printf(seq, ",compress_extension=%s", 1875 F2FS_OPTION(sbi).extensions[i]); 1876 } 1877 1878 for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) { 1879 seq_printf(seq, ",nocompress_extension=%s", 1880 F2FS_OPTION(sbi).noextensions[i]); 1881 } 1882 1883 if (F2FS_OPTION(sbi).compress_chksum) 1884 seq_puts(seq, ",compress_chksum"); 1885 1886 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1887 seq_printf(seq, ",compress_mode=%s", "fs"); 1888 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1889 seq_printf(seq, ",compress_mode=%s", "user"); 1890 1891 if (test_opt(sbi, COMPRESS_CACHE)) 1892 seq_puts(seq, ",compress_cache"); 1893 } 1894 #endif 1895 1896 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1897 { 1898 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1899 1900 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1901 seq_printf(seq, ",background_gc=%s", "sync"); 1902 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1903 seq_printf(seq, ",background_gc=%s", "on"); 1904 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1905 seq_printf(seq, ",background_gc=%s", "off"); 1906 1907 if (test_opt(sbi, GC_MERGE)) 1908 seq_puts(seq, ",gc_merge"); 1909 else 1910 seq_puts(seq, ",nogc_merge"); 1911 1912 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1913 seq_puts(seq, ",disable_roll_forward"); 1914 if (test_opt(sbi, NORECOVERY)) 1915 seq_puts(seq, ",norecovery"); 1916 if (test_opt(sbi, DISCARD)) { 1917 seq_puts(seq, ",discard"); 1918 if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK) 1919 seq_printf(seq, ",discard_unit=%s", "block"); 1920 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT) 1921 seq_printf(seq, ",discard_unit=%s", "segment"); 1922 else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION) 1923 seq_printf(seq, ",discard_unit=%s", "section"); 1924 } else { 1925 seq_puts(seq, ",nodiscard"); 1926 } 1927 if (test_opt(sbi, NOHEAP)) 1928 seq_puts(seq, ",no_heap"); 1929 else 1930 seq_puts(seq, ",heap"); 1931 #ifdef CONFIG_F2FS_FS_XATTR 1932 if (test_opt(sbi, XATTR_USER)) 1933 seq_puts(seq, ",user_xattr"); 1934 else 1935 seq_puts(seq, ",nouser_xattr"); 1936 if (test_opt(sbi, INLINE_XATTR)) 1937 seq_puts(seq, ",inline_xattr"); 1938 else 1939 seq_puts(seq, ",noinline_xattr"); 1940 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1941 seq_printf(seq, ",inline_xattr_size=%u", 1942 F2FS_OPTION(sbi).inline_xattr_size); 1943 #endif 1944 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1945 if (test_opt(sbi, POSIX_ACL)) 1946 seq_puts(seq, ",acl"); 1947 else 1948 seq_puts(seq, ",noacl"); 1949 #endif 1950 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1951 seq_puts(seq, ",disable_ext_identify"); 1952 if (test_opt(sbi, INLINE_DATA)) 1953 seq_puts(seq, ",inline_data"); 1954 else 1955 seq_puts(seq, ",noinline_data"); 1956 if (test_opt(sbi, INLINE_DENTRY)) 1957 seq_puts(seq, ",inline_dentry"); 1958 else 1959 seq_puts(seq, ",noinline_dentry"); 1960 if (test_opt(sbi, FLUSH_MERGE)) 1961 seq_puts(seq, ",flush_merge"); 1962 else 1963 seq_puts(seq, ",noflush_merge"); 1964 if (test_opt(sbi, NOBARRIER)) 1965 seq_puts(seq, ",nobarrier"); 1966 else 1967 seq_puts(seq, ",barrier"); 1968 if (test_opt(sbi, FASTBOOT)) 1969 seq_puts(seq, ",fastboot"); 1970 if (test_opt(sbi, READ_EXTENT_CACHE)) 1971 seq_puts(seq, ",extent_cache"); 1972 else 1973 seq_puts(seq, ",noextent_cache"); 1974 if (test_opt(sbi, AGE_EXTENT_CACHE)) 1975 seq_puts(seq, ",age_extent_cache"); 1976 if (test_opt(sbi, DATA_FLUSH)) 1977 seq_puts(seq, ",data_flush"); 1978 1979 seq_puts(seq, ",mode="); 1980 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 1981 seq_puts(seq, "adaptive"); 1982 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 1983 seq_puts(seq, "lfs"); 1984 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG) 1985 seq_puts(seq, "fragment:segment"); 1986 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK) 1987 seq_puts(seq, "fragment:block"); 1988 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 1989 if (test_opt(sbi, RESERVE_ROOT)) 1990 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 1991 F2FS_OPTION(sbi).root_reserved_blocks, 1992 from_kuid_munged(&init_user_ns, 1993 F2FS_OPTION(sbi).s_resuid), 1994 from_kgid_munged(&init_user_ns, 1995 F2FS_OPTION(sbi).s_resgid)); 1996 if (F2FS_IO_SIZE_BITS(sbi)) 1997 seq_printf(seq, ",io_bits=%u", 1998 F2FS_OPTION(sbi).write_io_size_bits); 1999 #ifdef CONFIG_F2FS_FAULT_INJECTION 2000 if (test_opt(sbi, FAULT_INJECTION)) { 2001 seq_printf(seq, ",fault_injection=%u", 2002 F2FS_OPTION(sbi).fault_info.inject_rate); 2003 seq_printf(seq, ",fault_type=%u", 2004 F2FS_OPTION(sbi).fault_info.inject_type); 2005 } 2006 #endif 2007 #ifdef CONFIG_QUOTA 2008 if (test_opt(sbi, QUOTA)) 2009 seq_puts(seq, ",quota"); 2010 if (test_opt(sbi, USRQUOTA)) 2011 seq_puts(seq, ",usrquota"); 2012 if (test_opt(sbi, GRPQUOTA)) 2013 seq_puts(seq, ",grpquota"); 2014 if (test_opt(sbi, PRJQUOTA)) 2015 seq_puts(seq, ",prjquota"); 2016 #endif 2017 f2fs_show_quota_options(seq, sbi->sb); 2018 2019 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 2020 2021 if (sbi->sb->s_flags & SB_INLINECRYPT) 2022 seq_puts(seq, ",inlinecrypt"); 2023 2024 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 2025 seq_printf(seq, ",alloc_mode=%s", "default"); 2026 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 2027 seq_printf(seq, ",alloc_mode=%s", "reuse"); 2028 2029 if (test_opt(sbi, DISABLE_CHECKPOINT)) 2030 seq_printf(seq, ",checkpoint=disable:%u", 2031 F2FS_OPTION(sbi).unusable_cap); 2032 if (test_opt(sbi, MERGE_CHECKPOINT)) 2033 seq_puts(seq, ",checkpoint_merge"); 2034 else 2035 seq_puts(seq, ",nocheckpoint_merge"); 2036 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 2037 seq_printf(seq, ",fsync_mode=%s", "posix"); 2038 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 2039 seq_printf(seq, ",fsync_mode=%s", "strict"); 2040 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 2041 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 2042 2043 #ifdef CONFIG_F2FS_FS_COMPRESSION 2044 f2fs_show_compress_options(seq, sbi->sb); 2045 #endif 2046 2047 if (test_opt(sbi, ATGC)) 2048 seq_puts(seq, ",atgc"); 2049 2050 if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_NORMAL) 2051 seq_printf(seq, ",memory=%s", "normal"); 2052 else if (F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW) 2053 seq_printf(seq, ",memory=%s", "low"); 2054 2055 return 0; 2056 } 2057 2058 static void default_options(struct f2fs_sb_info *sbi) 2059 { 2060 /* init some FS parameters */ 2061 if (f2fs_sb_has_readonly(sbi)) 2062 F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE; 2063 else 2064 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 2065 2066 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 2067 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main) <= 2068 SMALL_VOLUME_SEGMENTS) 2069 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 2070 else 2071 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 2072 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 2073 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 2074 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 2075 if (f2fs_sb_has_compression(sbi)) { 2076 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 2077 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 2078 F2FS_OPTION(sbi).compress_ext_cnt = 0; 2079 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 2080 } 2081 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 2082 F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; 2083 2084 sbi->sb->s_flags &= ~SB_INLINECRYPT; 2085 2086 set_opt(sbi, INLINE_XATTR); 2087 set_opt(sbi, INLINE_DATA); 2088 set_opt(sbi, INLINE_DENTRY); 2089 set_opt(sbi, READ_EXTENT_CACHE); 2090 set_opt(sbi, NOHEAP); 2091 clear_opt(sbi, DISABLE_CHECKPOINT); 2092 set_opt(sbi, MERGE_CHECKPOINT); 2093 F2FS_OPTION(sbi).unusable_cap = 0; 2094 sbi->sb->s_flags |= SB_LAZYTIME; 2095 if (!f2fs_is_readonly(sbi)) 2096 set_opt(sbi, FLUSH_MERGE); 2097 if (f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) 2098 set_opt(sbi, DISCARD); 2099 if (f2fs_sb_has_blkzoned(sbi)) { 2100 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 2101 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; 2102 } else { 2103 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 2104 F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_BLOCK; 2105 } 2106 2107 #ifdef CONFIG_F2FS_FS_XATTR 2108 set_opt(sbi, XATTR_USER); 2109 #endif 2110 #ifdef CONFIG_F2FS_FS_POSIX_ACL 2111 set_opt(sbi, POSIX_ACL); 2112 #endif 2113 2114 f2fs_build_fault_attr(sbi, 0, 0); 2115 } 2116 2117 #ifdef CONFIG_QUOTA 2118 static int f2fs_enable_quotas(struct super_block *sb); 2119 #endif 2120 2121 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 2122 { 2123 unsigned int s_flags = sbi->sb->s_flags; 2124 struct cp_control cpc; 2125 unsigned int gc_mode = sbi->gc_mode; 2126 int err = 0; 2127 int ret; 2128 block_t unusable; 2129 2130 if (s_flags & SB_RDONLY) { 2131 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 2132 return -EINVAL; 2133 } 2134 sbi->sb->s_flags |= SB_ACTIVE; 2135 2136 /* check if we need more GC first */ 2137 unusable = f2fs_get_unusable_blocks(sbi); 2138 if (!f2fs_disable_cp_again(sbi, unusable)) 2139 goto skip_gc; 2140 2141 f2fs_update_time(sbi, DISABLE_TIME); 2142 2143 sbi->gc_mode = GC_URGENT_HIGH; 2144 2145 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 2146 struct f2fs_gc_control gc_control = { 2147 .victim_segno = NULL_SEGNO, 2148 .init_gc_type = FG_GC, 2149 .should_migrate_blocks = false, 2150 .err_gc_skipped = true, 2151 .nr_free_secs = 1 }; 2152 2153 f2fs_down_write(&sbi->gc_lock); 2154 err = f2fs_gc(sbi, &gc_control); 2155 if (err == -ENODATA) { 2156 err = 0; 2157 break; 2158 } 2159 if (err && err != -EAGAIN) 2160 break; 2161 } 2162 2163 ret = sync_filesystem(sbi->sb); 2164 if (ret || err) { 2165 err = ret ? ret : err; 2166 goto restore_flag; 2167 } 2168 2169 unusable = f2fs_get_unusable_blocks(sbi); 2170 if (f2fs_disable_cp_again(sbi, unusable)) { 2171 err = -EAGAIN; 2172 goto restore_flag; 2173 } 2174 2175 skip_gc: 2176 f2fs_down_write(&sbi->gc_lock); 2177 cpc.reason = CP_PAUSE; 2178 set_sbi_flag(sbi, SBI_CP_DISABLED); 2179 err = f2fs_write_checkpoint(sbi, &cpc); 2180 if (err) 2181 goto out_unlock; 2182 2183 spin_lock(&sbi->stat_lock); 2184 sbi->unusable_block_count = unusable; 2185 spin_unlock(&sbi->stat_lock); 2186 2187 out_unlock: 2188 f2fs_up_write(&sbi->gc_lock); 2189 restore_flag: 2190 sbi->gc_mode = gc_mode; 2191 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 2192 return err; 2193 } 2194 2195 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 2196 { 2197 int retry = DEFAULT_RETRY_IO_COUNT; 2198 2199 /* we should flush all the data to keep data consistency */ 2200 do { 2201 sync_inodes_sb(sbi->sb); 2202 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2203 } while (get_pages(sbi, F2FS_DIRTY_DATA) && retry--); 2204 2205 if (unlikely(retry < 0)) 2206 f2fs_warn(sbi, "checkpoint=enable has some unwritten data."); 2207 2208 f2fs_down_write(&sbi->gc_lock); 2209 f2fs_dirty_to_prefree(sbi); 2210 2211 clear_sbi_flag(sbi, SBI_CP_DISABLED); 2212 set_sbi_flag(sbi, SBI_IS_DIRTY); 2213 f2fs_up_write(&sbi->gc_lock); 2214 2215 f2fs_sync_fs(sbi->sb, 1); 2216 2217 /* Let's ensure there's no pending checkpoint anymore */ 2218 f2fs_flush_ckpt_thread(sbi); 2219 } 2220 2221 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 2222 { 2223 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2224 struct f2fs_mount_info org_mount_opt; 2225 unsigned long old_sb_flags; 2226 int err; 2227 bool need_restart_gc = false, need_stop_gc = false; 2228 bool need_restart_ckpt = false, need_stop_ckpt = false; 2229 bool need_restart_flush = false, need_stop_flush = false; 2230 bool need_restart_discard = false, need_stop_discard = false; 2231 bool no_read_extent_cache = !test_opt(sbi, READ_EXTENT_CACHE); 2232 bool no_age_extent_cache = !test_opt(sbi, AGE_EXTENT_CACHE); 2233 bool enable_checkpoint = !test_opt(sbi, DISABLE_CHECKPOINT); 2234 bool no_io_align = !F2FS_IO_ALIGNED(sbi); 2235 bool no_atgc = !test_opt(sbi, ATGC); 2236 bool no_discard = !test_opt(sbi, DISCARD); 2237 bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE); 2238 bool block_unit_discard = f2fs_block_unit_discard(sbi); 2239 #ifdef CONFIG_QUOTA 2240 int i, j; 2241 #endif 2242 2243 /* 2244 * Save the old mount options in case we 2245 * need to restore them. 2246 */ 2247 org_mount_opt = sbi->mount_opt; 2248 old_sb_flags = sb->s_flags; 2249 2250 #ifdef CONFIG_QUOTA 2251 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 2252 for (i = 0; i < MAXQUOTAS; i++) { 2253 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2254 org_mount_opt.s_qf_names[i] = 2255 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 2256 GFP_KERNEL); 2257 if (!org_mount_opt.s_qf_names[i]) { 2258 for (j = 0; j < i; j++) 2259 kfree(org_mount_opt.s_qf_names[j]); 2260 return -ENOMEM; 2261 } 2262 } else { 2263 org_mount_opt.s_qf_names[i] = NULL; 2264 } 2265 } 2266 #endif 2267 2268 /* recover superblocks we couldn't write due to previous RO mount */ 2269 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 2270 err = f2fs_commit_super(sbi, false); 2271 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 2272 err); 2273 if (!err) 2274 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2275 } 2276 2277 default_options(sbi); 2278 2279 /* parse mount options */ 2280 err = parse_options(sb, data, true); 2281 if (err) 2282 goto restore_opts; 2283 2284 /* 2285 * Previous and new state of filesystem is RO, 2286 * so skip checking GC and FLUSH_MERGE conditions. 2287 */ 2288 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2289 goto skip; 2290 2291 if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) { 2292 err = -EROFS; 2293 goto restore_opts; 2294 } 2295 2296 #ifdef CONFIG_QUOTA 2297 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2298 err = dquot_suspend(sb, -1); 2299 if (err < 0) 2300 goto restore_opts; 2301 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2302 /* dquot_resume needs RW */ 2303 sb->s_flags &= ~SB_RDONLY; 2304 if (sb_any_quota_suspended(sb)) { 2305 dquot_resume(sb, -1); 2306 } else if (f2fs_sb_has_quota_ino(sbi)) { 2307 err = f2fs_enable_quotas(sb); 2308 if (err) 2309 goto restore_opts; 2310 } 2311 } 2312 #endif 2313 if (f2fs_lfs_mode(sbi) && !IS_F2FS_IPU_DISABLE(sbi)) { 2314 err = -EINVAL; 2315 f2fs_warn(sbi, "LFS is not compatible with IPU"); 2316 goto restore_opts; 2317 } 2318 2319 /* disallow enable atgc dynamically */ 2320 if (no_atgc == !!test_opt(sbi, ATGC)) { 2321 err = -EINVAL; 2322 f2fs_warn(sbi, "switch atgc option is not allowed"); 2323 goto restore_opts; 2324 } 2325 2326 /* disallow enable/disable extent_cache dynamically */ 2327 if (no_read_extent_cache == !!test_opt(sbi, READ_EXTENT_CACHE)) { 2328 err = -EINVAL; 2329 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2330 goto restore_opts; 2331 } 2332 /* disallow enable/disable age extent_cache dynamically */ 2333 if (no_age_extent_cache == !!test_opt(sbi, AGE_EXTENT_CACHE)) { 2334 err = -EINVAL; 2335 f2fs_warn(sbi, "switch age_extent_cache option is not allowed"); 2336 goto restore_opts; 2337 } 2338 2339 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) { 2340 err = -EINVAL; 2341 f2fs_warn(sbi, "switch io_bits option is not allowed"); 2342 goto restore_opts; 2343 } 2344 2345 if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) { 2346 err = -EINVAL; 2347 f2fs_warn(sbi, "switch compress_cache option is not allowed"); 2348 goto restore_opts; 2349 } 2350 2351 if (block_unit_discard != f2fs_block_unit_discard(sbi)) { 2352 err = -EINVAL; 2353 f2fs_warn(sbi, "switch discard_unit option is not allowed"); 2354 goto restore_opts; 2355 } 2356 2357 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2358 err = -EINVAL; 2359 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2360 goto restore_opts; 2361 } 2362 2363 /* 2364 * We stop the GC thread if FS is mounted as RO 2365 * or if background_gc = off is passed in mount 2366 * option. Also sync the filesystem. 2367 */ 2368 if ((*flags & SB_RDONLY) || 2369 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2370 !test_opt(sbi, GC_MERGE))) { 2371 if (sbi->gc_thread) { 2372 f2fs_stop_gc_thread(sbi); 2373 need_restart_gc = true; 2374 } 2375 } else if (!sbi->gc_thread) { 2376 err = f2fs_start_gc_thread(sbi); 2377 if (err) 2378 goto restore_opts; 2379 need_stop_gc = true; 2380 } 2381 2382 if (*flags & SB_RDONLY) { 2383 sync_inodes_sb(sb); 2384 2385 set_sbi_flag(sbi, SBI_IS_DIRTY); 2386 set_sbi_flag(sbi, SBI_IS_CLOSE); 2387 f2fs_sync_fs(sb, 1); 2388 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2389 } 2390 2391 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2392 !test_opt(sbi, MERGE_CHECKPOINT)) { 2393 f2fs_stop_ckpt_thread(sbi); 2394 need_restart_ckpt = true; 2395 } else { 2396 /* Flush if the prevous checkpoint, if exists. */ 2397 f2fs_flush_ckpt_thread(sbi); 2398 2399 err = f2fs_start_ckpt_thread(sbi); 2400 if (err) { 2401 f2fs_err(sbi, 2402 "Failed to start F2FS issue_checkpoint_thread (%d)", 2403 err); 2404 goto restore_gc; 2405 } 2406 need_stop_ckpt = true; 2407 } 2408 2409 /* 2410 * We stop issue flush thread if FS is mounted as RO 2411 * or if flush_merge is not passed in mount option. 2412 */ 2413 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2414 clear_opt(sbi, FLUSH_MERGE); 2415 f2fs_destroy_flush_cmd_control(sbi, false); 2416 need_restart_flush = true; 2417 } else { 2418 err = f2fs_create_flush_cmd_control(sbi); 2419 if (err) 2420 goto restore_ckpt; 2421 need_stop_flush = true; 2422 } 2423 2424 if (no_discard == !!test_opt(sbi, DISCARD)) { 2425 if (test_opt(sbi, DISCARD)) { 2426 err = f2fs_start_discard_thread(sbi); 2427 if (err) 2428 goto restore_flush; 2429 need_stop_discard = true; 2430 } else { 2431 f2fs_stop_discard_thread(sbi); 2432 f2fs_issue_discard_timeout(sbi); 2433 need_restart_discard = true; 2434 } 2435 } 2436 2437 if (enable_checkpoint == !!test_opt(sbi, DISABLE_CHECKPOINT)) { 2438 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2439 err = f2fs_disable_checkpoint(sbi); 2440 if (err) 2441 goto restore_discard; 2442 } else { 2443 f2fs_enable_checkpoint(sbi); 2444 } 2445 } 2446 2447 skip: 2448 #ifdef CONFIG_QUOTA 2449 /* Release old quota file names */ 2450 for (i = 0; i < MAXQUOTAS; i++) 2451 kfree(org_mount_opt.s_qf_names[i]); 2452 #endif 2453 /* Update the POSIXACL Flag */ 2454 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2455 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2456 2457 limit_reserve_root(sbi); 2458 adjust_unusable_cap_perc(sbi); 2459 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2460 return 0; 2461 restore_discard: 2462 if (need_restart_discard) { 2463 if (f2fs_start_discard_thread(sbi)) 2464 f2fs_warn(sbi, "discard has been stopped"); 2465 } else if (need_stop_discard) { 2466 f2fs_stop_discard_thread(sbi); 2467 } 2468 restore_flush: 2469 if (need_restart_flush) { 2470 if (f2fs_create_flush_cmd_control(sbi)) 2471 f2fs_warn(sbi, "background flush thread has stopped"); 2472 } else if (need_stop_flush) { 2473 clear_opt(sbi, FLUSH_MERGE); 2474 f2fs_destroy_flush_cmd_control(sbi, false); 2475 } 2476 restore_ckpt: 2477 if (need_restart_ckpt) { 2478 if (f2fs_start_ckpt_thread(sbi)) 2479 f2fs_warn(sbi, "background ckpt thread has stopped"); 2480 } else if (need_stop_ckpt) { 2481 f2fs_stop_ckpt_thread(sbi); 2482 } 2483 restore_gc: 2484 if (need_restart_gc) { 2485 if (f2fs_start_gc_thread(sbi)) 2486 f2fs_warn(sbi, "background gc thread has stopped"); 2487 } else if (need_stop_gc) { 2488 f2fs_stop_gc_thread(sbi); 2489 } 2490 restore_opts: 2491 #ifdef CONFIG_QUOTA 2492 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2493 for (i = 0; i < MAXQUOTAS; i++) { 2494 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2495 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2496 } 2497 #endif 2498 sbi->mount_opt = org_mount_opt; 2499 sb->s_flags = old_sb_flags; 2500 return err; 2501 } 2502 2503 #ifdef CONFIG_QUOTA 2504 static bool f2fs_need_recovery(struct f2fs_sb_info *sbi) 2505 { 2506 /* need to recovery orphan */ 2507 if (is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG)) 2508 return true; 2509 /* need to recovery data */ 2510 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 2511 return false; 2512 if (test_opt(sbi, NORECOVERY)) 2513 return false; 2514 return !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG); 2515 } 2516 2517 static bool f2fs_recover_quota_begin(struct f2fs_sb_info *sbi) 2518 { 2519 bool readonly = f2fs_readonly(sbi->sb); 2520 2521 if (!f2fs_need_recovery(sbi)) 2522 return false; 2523 2524 /* it doesn't need to check f2fs_sb_has_readonly() */ 2525 if (f2fs_hw_is_readonly(sbi)) 2526 return false; 2527 2528 if (readonly) { 2529 sbi->sb->s_flags &= ~SB_RDONLY; 2530 set_sbi_flag(sbi, SBI_IS_WRITABLE); 2531 } 2532 2533 /* 2534 * Turn on quotas which were not enabled for read-only mounts if 2535 * filesystem has quota feature, so that they are updated correctly. 2536 */ 2537 return f2fs_enable_quota_files(sbi, readonly); 2538 } 2539 2540 static void f2fs_recover_quota_end(struct f2fs_sb_info *sbi, 2541 bool quota_enabled) 2542 { 2543 if (quota_enabled) 2544 f2fs_quota_off_umount(sbi->sb); 2545 2546 if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE)) { 2547 clear_sbi_flag(sbi, SBI_IS_WRITABLE); 2548 sbi->sb->s_flags |= SB_RDONLY; 2549 } 2550 } 2551 2552 /* Read data from quotafile */ 2553 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2554 size_t len, loff_t off) 2555 { 2556 struct inode *inode = sb_dqopt(sb)->files[type]; 2557 struct address_space *mapping = inode->i_mapping; 2558 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2559 int offset = off & (sb->s_blocksize - 1); 2560 int tocopy; 2561 size_t toread; 2562 loff_t i_size = i_size_read(inode); 2563 struct page *page; 2564 2565 if (off > i_size) 2566 return 0; 2567 2568 if (off + len > i_size) 2569 len = i_size - off; 2570 toread = len; 2571 while (toread > 0) { 2572 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2573 repeat: 2574 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2575 if (IS_ERR(page)) { 2576 if (PTR_ERR(page) == -ENOMEM) { 2577 memalloc_retry_wait(GFP_NOFS); 2578 goto repeat; 2579 } 2580 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2581 return PTR_ERR(page); 2582 } 2583 2584 lock_page(page); 2585 2586 if (unlikely(page->mapping != mapping)) { 2587 f2fs_put_page(page, 1); 2588 goto repeat; 2589 } 2590 if (unlikely(!PageUptodate(page))) { 2591 f2fs_put_page(page, 1); 2592 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2593 return -EIO; 2594 } 2595 2596 memcpy_from_page(data, page, offset, tocopy); 2597 f2fs_put_page(page, 1); 2598 2599 offset = 0; 2600 toread -= tocopy; 2601 data += tocopy; 2602 blkidx++; 2603 } 2604 return len; 2605 } 2606 2607 /* Write to quotafile */ 2608 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2609 const char *data, size_t len, loff_t off) 2610 { 2611 struct inode *inode = sb_dqopt(sb)->files[type]; 2612 struct address_space *mapping = inode->i_mapping; 2613 const struct address_space_operations *a_ops = mapping->a_ops; 2614 int offset = off & (sb->s_blocksize - 1); 2615 size_t towrite = len; 2616 struct page *page; 2617 void *fsdata = NULL; 2618 int err = 0; 2619 int tocopy; 2620 2621 while (towrite > 0) { 2622 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2623 towrite); 2624 retry: 2625 err = a_ops->write_begin(NULL, mapping, off, tocopy, 2626 &page, &fsdata); 2627 if (unlikely(err)) { 2628 if (err == -ENOMEM) { 2629 f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); 2630 goto retry; 2631 } 2632 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2633 break; 2634 } 2635 2636 memcpy_to_page(page, offset, data, tocopy); 2637 2638 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2639 page, fsdata); 2640 offset = 0; 2641 towrite -= tocopy; 2642 off += tocopy; 2643 data += tocopy; 2644 cond_resched(); 2645 } 2646 2647 if (len == towrite) 2648 return err; 2649 inode->i_mtime = inode->i_ctime = current_time(inode); 2650 f2fs_mark_inode_dirty_sync(inode, false); 2651 return len - towrite; 2652 } 2653 2654 int f2fs_dquot_initialize(struct inode *inode) 2655 { 2656 if (time_to_inject(F2FS_I_SB(inode), FAULT_DQUOT_INIT)) 2657 return -ESRCH; 2658 2659 return dquot_initialize(inode); 2660 } 2661 2662 static struct dquot **f2fs_get_dquots(struct inode *inode) 2663 { 2664 return F2FS_I(inode)->i_dquot; 2665 } 2666 2667 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2668 { 2669 return &F2FS_I(inode)->i_reserved_quota; 2670 } 2671 2672 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2673 { 2674 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2675 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2676 return 0; 2677 } 2678 2679 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2680 F2FS_OPTION(sbi).s_jquota_fmt, type); 2681 } 2682 2683 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2684 { 2685 int enabled = 0; 2686 int i, err; 2687 2688 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2689 err = f2fs_enable_quotas(sbi->sb); 2690 if (err) { 2691 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2692 return 0; 2693 } 2694 return 1; 2695 } 2696 2697 for (i = 0; i < MAXQUOTAS; i++) { 2698 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2699 err = f2fs_quota_on_mount(sbi, i); 2700 if (!err) { 2701 enabled = 1; 2702 continue; 2703 } 2704 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2705 err, i); 2706 } 2707 } 2708 return enabled; 2709 } 2710 2711 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2712 unsigned int flags) 2713 { 2714 struct inode *qf_inode; 2715 unsigned long qf_inum; 2716 int err; 2717 2718 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2719 2720 qf_inum = f2fs_qf_ino(sb, type); 2721 if (!qf_inum) 2722 return -EPERM; 2723 2724 qf_inode = f2fs_iget(sb, qf_inum); 2725 if (IS_ERR(qf_inode)) { 2726 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2727 return PTR_ERR(qf_inode); 2728 } 2729 2730 /* Don't account quota for quota files to avoid recursion */ 2731 qf_inode->i_flags |= S_NOQUOTA; 2732 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2733 iput(qf_inode); 2734 return err; 2735 } 2736 2737 static int f2fs_enable_quotas(struct super_block *sb) 2738 { 2739 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2740 int type, err = 0; 2741 unsigned long qf_inum; 2742 bool quota_mopt[MAXQUOTAS] = { 2743 test_opt(sbi, USRQUOTA), 2744 test_opt(sbi, GRPQUOTA), 2745 test_opt(sbi, PRJQUOTA), 2746 }; 2747 2748 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2749 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2750 return 0; 2751 } 2752 2753 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2754 2755 for (type = 0; type < MAXQUOTAS; type++) { 2756 qf_inum = f2fs_qf_ino(sb, type); 2757 if (qf_inum) { 2758 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2759 DQUOT_USAGE_ENABLED | 2760 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2761 if (err) { 2762 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2763 type, err); 2764 for (type--; type >= 0; type--) 2765 dquot_quota_off(sb, type); 2766 set_sbi_flag(F2FS_SB(sb), 2767 SBI_QUOTA_NEED_REPAIR); 2768 return err; 2769 } 2770 } 2771 } 2772 return 0; 2773 } 2774 2775 static int f2fs_quota_sync_file(struct f2fs_sb_info *sbi, int type) 2776 { 2777 struct quota_info *dqopt = sb_dqopt(sbi->sb); 2778 struct address_space *mapping = dqopt->files[type]->i_mapping; 2779 int ret = 0; 2780 2781 ret = dquot_writeback_dquots(sbi->sb, type); 2782 if (ret) 2783 goto out; 2784 2785 ret = filemap_fdatawrite(mapping); 2786 if (ret) 2787 goto out; 2788 2789 /* if we are using journalled quota */ 2790 if (is_journalled_quota(sbi)) 2791 goto out; 2792 2793 ret = filemap_fdatawait(mapping); 2794 2795 truncate_inode_pages(&dqopt->files[type]->i_data, 0); 2796 out: 2797 if (ret) 2798 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2799 return ret; 2800 } 2801 2802 int f2fs_quota_sync(struct super_block *sb, int type) 2803 { 2804 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2805 struct quota_info *dqopt = sb_dqopt(sb); 2806 int cnt; 2807 int ret = 0; 2808 2809 /* 2810 * Now when everything is written we can discard the pagecache so 2811 * that userspace sees the changes. 2812 */ 2813 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2814 2815 if (type != -1 && cnt != type) 2816 continue; 2817 2818 if (!sb_has_quota_active(sb, cnt)) 2819 continue; 2820 2821 if (!f2fs_sb_has_quota_ino(sbi)) 2822 inode_lock(dqopt->files[cnt]); 2823 2824 /* 2825 * do_quotactl 2826 * f2fs_quota_sync 2827 * f2fs_down_read(quota_sem) 2828 * dquot_writeback_dquots() 2829 * f2fs_dquot_commit 2830 * block_operation 2831 * f2fs_down_read(quota_sem) 2832 */ 2833 f2fs_lock_op(sbi); 2834 f2fs_down_read(&sbi->quota_sem); 2835 2836 ret = f2fs_quota_sync_file(sbi, cnt); 2837 2838 f2fs_up_read(&sbi->quota_sem); 2839 f2fs_unlock_op(sbi); 2840 2841 if (!f2fs_sb_has_quota_ino(sbi)) 2842 inode_unlock(dqopt->files[cnt]); 2843 2844 if (ret) 2845 break; 2846 } 2847 return ret; 2848 } 2849 2850 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 2851 const struct path *path) 2852 { 2853 struct inode *inode; 2854 int err; 2855 2856 /* if quota sysfile exists, deny enabling quota with specific file */ 2857 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 2858 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 2859 return -EBUSY; 2860 } 2861 2862 err = f2fs_quota_sync(sb, type); 2863 if (err) 2864 return err; 2865 2866 err = dquot_quota_on(sb, type, format_id, path); 2867 if (err) 2868 return err; 2869 2870 inode = d_inode(path->dentry); 2871 2872 inode_lock(inode); 2873 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL; 2874 f2fs_set_inode_flags(inode); 2875 inode_unlock(inode); 2876 f2fs_mark_inode_dirty_sync(inode, false); 2877 2878 return 0; 2879 } 2880 2881 static int __f2fs_quota_off(struct super_block *sb, int type) 2882 { 2883 struct inode *inode = sb_dqopt(sb)->files[type]; 2884 int err; 2885 2886 if (!inode || !igrab(inode)) 2887 return dquot_quota_off(sb, type); 2888 2889 err = f2fs_quota_sync(sb, type); 2890 if (err) 2891 goto out_put; 2892 2893 err = dquot_quota_off(sb, type); 2894 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2895 goto out_put; 2896 2897 inode_lock(inode); 2898 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL); 2899 f2fs_set_inode_flags(inode); 2900 inode_unlock(inode); 2901 f2fs_mark_inode_dirty_sync(inode, false); 2902 out_put: 2903 iput(inode); 2904 return err; 2905 } 2906 2907 static int f2fs_quota_off(struct super_block *sb, int type) 2908 { 2909 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2910 int err; 2911 2912 err = __f2fs_quota_off(sb, type); 2913 2914 /* 2915 * quotactl can shutdown journalled quota, result in inconsistence 2916 * between quota record and fs data by following updates, tag the 2917 * flag to let fsck be aware of it. 2918 */ 2919 if (is_journalled_quota(sbi)) 2920 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2921 return err; 2922 } 2923 2924 void f2fs_quota_off_umount(struct super_block *sb) 2925 { 2926 int type; 2927 int err; 2928 2929 for (type = 0; type < MAXQUOTAS; type++) { 2930 err = __f2fs_quota_off(sb, type); 2931 if (err) { 2932 int ret = dquot_quota_off(sb, type); 2933 2934 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 2935 type, err, ret); 2936 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2937 } 2938 } 2939 /* 2940 * In case of checkpoint=disable, we must flush quota blocks. 2941 * This can cause NULL exception for node_inode in end_io, since 2942 * put_super already dropped it. 2943 */ 2944 sync_filesystem(sb); 2945 } 2946 2947 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 2948 { 2949 struct quota_info *dqopt = sb_dqopt(sb); 2950 int type; 2951 2952 for (type = 0; type < MAXQUOTAS; type++) { 2953 if (!dqopt->files[type]) 2954 continue; 2955 f2fs_inode_synced(dqopt->files[type]); 2956 } 2957 } 2958 2959 static int f2fs_dquot_commit(struct dquot *dquot) 2960 { 2961 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2962 int ret; 2963 2964 f2fs_down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 2965 ret = dquot_commit(dquot); 2966 if (ret < 0) 2967 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2968 f2fs_up_read(&sbi->quota_sem); 2969 return ret; 2970 } 2971 2972 static int f2fs_dquot_acquire(struct dquot *dquot) 2973 { 2974 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2975 int ret; 2976 2977 f2fs_down_read(&sbi->quota_sem); 2978 ret = dquot_acquire(dquot); 2979 if (ret < 0) 2980 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2981 f2fs_up_read(&sbi->quota_sem); 2982 return ret; 2983 } 2984 2985 static int f2fs_dquot_release(struct dquot *dquot) 2986 { 2987 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2988 int ret = dquot_release(dquot); 2989 2990 if (ret < 0) 2991 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2992 return ret; 2993 } 2994 2995 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 2996 { 2997 struct super_block *sb = dquot->dq_sb; 2998 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2999 int ret = dquot_mark_dquot_dirty(dquot); 3000 3001 /* if we are using journalled quota */ 3002 if (is_journalled_quota(sbi)) 3003 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 3004 3005 return ret; 3006 } 3007 3008 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 3009 { 3010 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3011 int ret = dquot_commit_info(sb, type); 3012 3013 if (ret < 0) 3014 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3015 return ret; 3016 } 3017 3018 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 3019 { 3020 *projid = F2FS_I(inode)->i_projid; 3021 return 0; 3022 } 3023 3024 static const struct dquot_operations f2fs_quota_operations = { 3025 .get_reserved_space = f2fs_get_reserved_space, 3026 .write_dquot = f2fs_dquot_commit, 3027 .acquire_dquot = f2fs_dquot_acquire, 3028 .release_dquot = f2fs_dquot_release, 3029 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 3030 .write_info = f2fs_dquot_commit_info, 3031 .alloc_dquot = dquot_alloc, 3032 .destroy_dquot = dquot_destroy, 3033 .get_projid = f2fs_get_projid, 3034 .get_next_id = dquot_get_next_id, 3035 }; 3036 3037 static const struct quotactl_ops f2fs_quotactl_ops = { 3038 .quota_on = f2fs_quota_on, 3039 .quota_off = f2fs_quota_off, 3040 .quota_sync = f2fs_quota_sync, 3041 .get_state = dquot_get_state, 3042 .set_info = dquot_set_dqinfo, 3043 .get_dqblk = dquot_get_dqblk, 3044 .set_dqblk = dquot_set_dqblk, 3045 .get_nextdqblk = dquot_get_next_dqblk, 3046 }; 3047 #else 3048 int f2fs_dquot_initialize(struct inode *inode) 3049 { 3050 return 0; 3051 } 3052 3053 int f2fs_quota_sync(struct super_block *sb, int type) 3054 { 3055 return 0; 3056 } 3057 3058 void f2fs_quota_off_umount(struct super_block *sb) 3059 { 3060 } 3061 #endif 3062 3063 static const struct super_operations f2fs_sops = { 3064 .alloc_inode = f2fs_alloc_inode, 3065 .free_inode = f2fs_free_inode, 3066 .drop_inode = f2fs_drop_inode, 3067 .write_inode = f2fs_write_inode, 3068 .dirty_inode = f2fs_dirty_inode, 3069 .show_options = f2fs_show_options, 3070 #ifdef CONFIG_QUOTA 3071 .quota_read = f2fs_quota_read, 3072 .quota_write = f2fs_quota_write, 3073 .get_dquots = f2fs_get_dquots, 3074 #endif 3075 .evict_inode = f2fs_evict_inode, 3076 .put_super = f2fs_put_super, 3077 .sync_fs = f2fs_sync_fs, 3078 .freeze_fs = f2fs_freeze, 3079 .unfreeze_fs = f2fs_unfreeze, 3080 .statfs = f2fs_statfs, 3081 .remount_fs = f2fs_remount, 3082 }; 3083 3084 #ifdef CONFIG_FS_ENCRYPTION 3085 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 3086 { 3087 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3088 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3089 ctx, len, NULL); 3090 } 3091 3092 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 3093 void *fs_data) 3094 { 3095 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 3096 3097 /* 3098 * Encrypting the root directory is not allowed because fsck 3099 * expects lost+found directory to exist and remain unencrypted 3100 * if LOST_FOUND feature is enabled. 3101 * 3102 */ 3103 if (f2fs_sb_has_lost_found(sbi) && 3104 inode->i_ino == F2FS_ROOT_INO(sbi)) 3105 return -EPERM; 3106 3107 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 3108 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 3109 ctx, len, fs_data, XATTR_CREATE); 3110 } 3111 3112 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 3113 { 3114 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 3115 } 3116 3117 static bool f2fs_has_stable_inodes(struct super_block *sb) 3118 { 3119 return true; 3120 } 3121 3122 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb, 3123 int *ino_bits_ret, int *lblk_bits_ret) 3124 { 3125 *ino_bits_ret = 8 * sizeof(nid_t); 3126 *lblk_bits_ret = 8 * sizeof(block_t); 3127 } 3128 3129 static struct block_device **f2fs_get_devices(struct super_block *sb, 3130 unsigned int *num_devs) 3131 { 3132 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3133 struct block_device **devs; 3134 int i; 3135 3136 if (!f2fs_is_multi_device(sbi)) 3137 return NULL; 3138 3139 devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL); 3140 if (!devs) 3141 return ERR_PTR(-ENOMEM); 3142 3143 for (i = 0; i < sbi->s_ndevs; i++) 3144 devs[i] = FDEV(i).bdev; 3145 *num_devs = sbi->s_ndevs; 3146 return devs; 3147 } 3148 3149 static const struct fscrypt_operations f2fs_cryptops = { 3150 .key_prefix = "f2fs:", 3151 .get_context = f2fs_get_context, 3152 .set_context = f2fs_set_context, 3153 .get_dummy_policy = f2fs_get_dummy_policy, 3154 .empty_dir = f2fs_empty_dir, 3155 .has_stable_inodes = f2fs_has_stable_inodes, 3156 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits, 3157 .get_devices = f2fs_get_devices, 3158 }; 3159 #endif 3160 3161 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 3162 u64 ino, u32 generation) 3163 { 3164 struct f2fs_sb_info *sbi = F2FS_SB(sb); 3165 struct inode *inode; 3166 3167 if (f2fs_check_nid_range(sbi, ino)) 3168 return ERR_PTR(-ESTALE); 3169 3170 /* 3171 * f2fs_iget isn't quite right if the inode is currently unallocated! 3172 * However f2fs_iget currently does appropriate checks to handle stale 3173 * inodes so everything is OK. 3174 */ 3175 inode = f2fs_iget(sb, ino); 3176 if (IS_ERR(inode)) 3177 return ERR_CAST(inode); 3178 if (unlikely(generation && inode->i_generation != generation)) { 3179 /* we didn't find the right inode.. */ 3180 iput(inode); 3181 return ERR_PTR(-ESTALE); 3182 } 3183 return inode; 3184 } 3185 3186 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 3187 int fh_len, int fh_type) 3188 { 3189 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 3190 f2fs_nfs_get_inode); 3191 } 3192 3193 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 3194 int fh_len, int fh_type) 3195 { 3196 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 3197 f2fs_nfs_get_inode); 3198 } 3199 3200 static const struct export_operations f2fs_export_ops = { 3201 .fh_to_dentry = f2fs_fh_to_dentry, 3202 .fh_to_parent = f2fs_fh_to_parent, 3203 .get_parent = f2fs_get_parent, 3204 }; 3205 3206 loff_t max_file_blocks(struct inode *inode) 3207 { 3208 loff_t result = 0; 3209 loff_t leaf_count; 3210 3211 /* 3212 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 3213 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 3214 * space in inode.i_addr, it will be more safe to reassign 3215 * result as zero. 3216 */ 3217 3218 if (inode && f2fs_compressed_file(inode)) 3219 leaf_count = ADDRS_PER_BLOCK(inode); 3220 else 3221 leaf_count = DEF_ADDRS_PER_BLOCK; 3222 3223 /* two direct node blocks */ 3224 result += (leaf_count * 2); 3225 3226 /* two indirect node blocks */ 3227 leaf_count *= NIDS_PER_BLOCK; 3228 result += (leaf_count * 2); 3229 3230 /* one double indirect node block */ 3231 leaf_count *= NIDS_PER_BLOCK; 3232 result += leaf_count; 3233 3234 return result; 3235 } 3236 3237 static int __f2fs_commit_super(struct buffer_head *bh, 3238 struct f2fs_super_block *super) 3239 { 3240 lock_buffer(bh); 3241 if (super) 3242 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 3243 set_buffer_dirty(bh); 3244 unlock_buffer(bh); 3245 3246 /* it's rare case, we can do fua all the time */ 3247 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 3248 } 3249 3250 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 3251 struct buffer_head *bh) 3252 { 3253 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3254 (bh->b_data + F2FS_SUPER_OFFSET); 3255 struct super_block *sb = sbi->sb; 3256 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 3257 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 3258 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 3259 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 3260 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 3261 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 3262 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 3263 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 3264 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 3265 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 3266 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3267 u32 segment_count = le32_to_cpu(raw_super->segment_count); 3268 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3269 u64 main_end_blkaddr = main_blkaddr + 3270 (segment_count_main << log_blocks_per_seg); 3271 u64 seg_end_blkaddr = segment0_blkaddr + 3272 (segment_count << log_blocks_per_seg); 3273 3274 if (segment0_blkaddr != cp_blkaddr) { 3275 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 3276 segment0_blkaddr, cp_blkaddr); 3277 return true; 3278 } 3279 3280 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 3281 sit_blkaddr) { 3282 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 3283 cp_blkaddr, sit_blkaddr, 3284 segment_count_ckpt << log_blocks_per_seg); 3285 return true; 3286 } 3287 3288 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 3289 nat_blkaddr) { 3290 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 3291 sit_blkaddr, nat_blkaddr, 3292 segment_count_sit << log_blocks_per_seg); 3293 return true; 3294 } 3295 3296 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 3297 ssa_blkaddr) { 3298 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 3299 nat_blkaddr, ssa_blkaddr, 3300 segment_count_nat << log_blocks_per_seg); 3301 return true; 3302 } 3303 3304 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 3305 main_blkaddr) { 3306 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 3307 ssa_blkaddr, main_blkaddr, 3308 segment_count_ssa << log_blocks_per_seg); 3309 return true; 3310 } 3311 3312 if (main_end_blkaddr > seg_end_blkaddr) { 3313 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 3314 main_blkaddr, seg_end_blkaddr, 3315 segment_count_main << log_blocks_per_seg); 3316 return true; 3317 } else if (main_end_blkaddr < seg_end_blkaddr) { 3318 int err = 0; 3319 char *res; 3320 3321 /* fix in-memory information all the time */ 3322 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 3323 segment0_blkaddr) >> log_blocks_per_seg); 3324 3325 if (f2fs_readonly(sb) || f2fs_hw_is_readonly(sbi)) { 3326 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3327 res = "internally"; 3328 } else { 3329 err = __f2fs_commit_super(bh, NULL); 3330 res = err ? "failed" : "done"; 3331 } 3332 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 3333 res, main_blkaddr, seg_end_blkaddr, 3334 segment_count_main << log_blocks_per_seg); 3335 if (err) 3336 return true; 3337 } 3338 return false; 3339 } 3340 3341 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 3342 struct buffer_head *bh) 3343 { 3344 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 3345 block_t total_sections, blocks_per_seg; 3346 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 3347 (bh->b_data + F2FS_SUPER_OFFSET); 3348 size_t crc_offset = 0; 3349 __u32 crc = 0; 3350 3351 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 3352 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 3353 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 3354 return -EINVAL; 3355 } 3356 3357 /* Check checksum_offset and crc in superblock */ 3358 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 3359 crc_offset = le32_to_cpu(raw_super->checksum_offset); 3360 if (crc_offset != 3361 offsetof(struct f2fs_super_block, crc)) { 3362 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 3363 crc_offset); 3364 return -EFSCORRUPTED; 3365 } 3366 crc = le32_to_cpu(raw_super->crc); 3367 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 3368 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 3369 return -EFSCORRUPTED; 3370 } 3371 } 3372 3373 /* Currently, support only 4KB block size */ 3374 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 3375 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 3376 le32_to_cpu(raw_super->log_blocksize), 3377 F2FS_BLKSIZE_BITS); 3378 return -EFSCORRUPTED; 3379 } 3380 3381 /* check log blocks per segment */ 3382 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 3383 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 3384 le32_to_cpu(raw_super->log_blocks_per_seg)); 3385 return -EFSCORRUPTED; 3386 } 3387 3388 /* Currently, support 512/1024/2048/4096 bytes sector size */ 3389 if (le32_to_cpu(raw_super->log_sectorsize) > 3390 F2FS_MAX_LOG_SECTOR_SIZE || 3391 le32_to_cpu(raw_super->log_sectorsize) < 3392 F2FS_MIN_LOG_SECTOR_SIZE) { 3393 f2fs_info(sbi, "Invalid log sectorsize (%u)", 3394 le32_to_cpu(raw_super->log_sectorsize)); 3395 return -EFSCORRUPTED; 3396 } 3397 if (le32_to_cpu(raw_super->log_sectors_per_block) + 3398 le32_to_cpu(raw_super->log_sectorsize) != 3399 F2FS_MAX_LOG_SECTOR_SIZE) { 3400 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3401 le32_to_cpu(raw_super->log_sectors_per_block), 3402 le32_to_cpu(raw_super->log_sectorsize)); 3403 return -EFSCORRUPTED; 3404 } 3405 3406 segment_count = le32_to_cpu(raw_super->segment_count); 3407 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3408 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3409 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3410 total_sections = le32_to_cpu(raw_super->section_count); 3411 3412 /* blocks_per_seg should be 512, given the above check */ 3413 blocks_per_seg = BIT(le32_to_cpu(raw_super->log_blocks_per_seg)); 3414 3415 if (segment_count > F2FS_MAX_SEGMENT || 3416 segment_count < F2FS_MIN_SEGMENTS) { 3417 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3418 return -EFSCORRUPTED; 3419 } 3420 3421 if (total_sections > segment_count_main || total_sections < 1 || 3422 segs_per_sec > segment_count || !segs_per_sec) { 3423 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3424 segment_count, total_sections, segs_per_sec); 3425 return -EFSCORRUPTED; 3426 } 3427 3428 if (segment_count_main != total_sections * segs_per_sec) { 3429 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3430 segment_count_main, total_sections, segs_per_sec); 3431 return -EFSCORRUPTED; 3432 } 3433 3434 if ((segment_count / segs_per_sec) < total_sections) { 3435 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3436 segment_count, segs_per_sec, total_sections); 3437 return -EFSCORRUPTED; 3438 } 3439 3440 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3441 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3442 segment_count, le64_to_cpu(raw_super->block_count)); 3443 return -EFSCORRUPTED; 3444 } 3445 3446 if (RDEV(0).path[0]) { 3447 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3448 int i = 1; 3449 3450 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3451 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3452 i++; 3453 } 3454 if (segment_count != dev_seg_count) { 3455 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3456 segment_count, dev_seg_count); 3457 return -EFSCORRUPTED; 3458 } 3459 } else { 3460 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3461 !bdev_is_zoned(sbi->sb->s_bdev)) { 3462 f2fs_info(sbi, "Zoned block device path is missing"); 3463 return -EFSCORRUPTED; 3464 } 3465 } 3466 3467 if (secs_per_zone > total_sections || !secs_per_zone) { 3468 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3469 secs_per_zone, total_sections); 3470 return -EFSCORRUPTED; 3471 } 3472 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3473 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3474 (le32_to_cpu(raw_super->extension_count) + 3475 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3476 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3477 le32_to_cpu(raw_super->extension_count), 3478 raw_super->hot_ext_count, 3479 F2FS_MAX_EXTENSION); 3480 return -EFSCORRUPTED; 3481 } 3482 3483 if (le32_to_cpu(raw_super->cp_payload) >= 3484 (blocks_per_seg - F2FS_CP_PACKS - 3485 NR_CURSEG_PERSIST_TYPE)) { 3486 f2fs_info(sbi, "Insane cp_payload (%u >= %u)", 3487 le32_to_cpu(raw_super->cp_payload), 3488 blocks_per_seg - F2FS_CP_PACKS - 3489 NR_CURSEG_PERSIST_TYPE); 3490 return -EFSCORRUPTED; 3491 } 3492 3493 /* check reserved ino info */ 3494 if (le32_to_cpu(raw_super->node_ino) != 1 || 3495 le32_to_cpu(raw_super->meta_ino) != 2 || 3496 le32_to_cpu(raw_super->root_ino) != 3) { 3497 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3498 le32_to_cpu(raw_super->node_ino), 3499 le32_to_cpu(raw_super->meta_ino), 3500 le32_to_cpu(raw_super->root_ino)); 3501 return -EFSCORRUPTED; 3502 } 3503 3504 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3505 if (sanity_check_area_boundary(sbi, bh)) 3506 return -EFSCORRUPTED; 3507 3508 return 0; 3509 } 3510 3511 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3512 { 3513 unsigned int total, fsmeta; 3514 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3515 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3516 unsigned int ovp_segments, reserved_segments; 3517 unsigned int main_segs, blocks_per_seg; 3518 unsigned int sit_segs, nat_segs; 3519 unsigned int sit_bitmap_size, nat_bitmap_size; 3520 unsigned int log_blocks_per_seg; 3521 unsigned int segment_count_main; 3522 unsigned int cp_pack_start_sum, cp_payload; 3523 block_t user_block_count, valid_user_blocks; 3524 block_t avail_node_count, valid_node_count; 3525 unsigned int nat_blocks, nat_bits_bytes, nat_bits_blocks; 3526 int i, j; 3527 3528 total = le32_to_cpu(raw_super->segment_count); 3529 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3530 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3531 fsmeta += sit_segs; 3532 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3533 fsmeta += nat_segs; 3534 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3535 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3536 3537 if (unlikely(fsmeta >= total)) 3538 return 1; 3539 3540 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3541 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3542 3543 if (!f2fs_sb_has_readonly(sbi) && 3544 unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3545 ovp_segments == 0 || reserved_segments == 0)) { 3546 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3547 return 1; 3548 } 3549 user_block_count = le64_to_cpu(ckpt->user_block_count); 3550 segment_count_main = le32_to_cpu(raw_super->segment_count_main) + 3551 (f2fs_sb_has_readonly(sbi) ? 1 : 0); 3552 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3553 if (!user_block_count || user_block_count >= 3554 segment_count_main << log_blocks_per_seg) { 3555 f2fs_err(sbi, "Wrong user_block_count: %u", 3556 user_block_count); 3557 return 1; 3558 } 3559 3560 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3561 if (valid_user_blocks > user_block_count) { 3562 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3563 valid_user_blocks, user_block_count); 3564 return 1; 3565 } 3566 3567 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3568 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3569 if (valid_node_count > avail_node_count) { 3570 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3571 valid_node_count, avail_node_count); 3572 return 1; 3573 } 3574 3575 main_segs = le32_to_cpu(raw_super->segment_count_main); 3576 blocks_per_seg = sbi->blocks_per_seg; 3577 3578 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3579 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3580 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3581 return 1; 3582 3583 if (f2fs_sb_has_readonly(sbi)) 3584 goto check_data; 3585 3586 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3587 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3588 le32_to_cpu(ckpt->cur_node_segno[j])) { 3589 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3590 i, j, 3591 le32_to_cpu(ckpt->cur_node_segno[i])); 3592 return 1; 3593 } 3594 } 3595 } 3596 check_data: 3597 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3598 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3599 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3600 return 1; 3601 3602 if (f2fs_sb_has_readonly(sbi)) 3603 goto skip_cross; 3604 3605 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3606 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3607 le32_to_cpu(ckpt->cur_data_segno[j])) { 3608 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3609 i, j, 3610 le32_to_cpu(ckpt->cur_data_segno[i])); 3611 return 1; 3612 } 3613 } 3614 } 3615 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3616 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3617 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3618 le32_to_cpu(ckpt->cur_data_segno[j])) { 3619 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3620 i, j, 3621 le32_to_cpu(ckpt->cur_node_segno[i])); 3622 return 1; 3623 } 3624 } 3625 } 3626 skip_cross: 3627 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3628 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3629 3630 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3631 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3632 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3633 sit_bitmap_size, nat_bitmap_size); 3634 return 1; 3635 } 3636 3637 cp_pack_start_sum = __start_sum_addr(sbi); 3638 cp_payload = __cp_payload(sbi); 3639 if (cp_pack_start_sum < cp_payload + 1 || 3640 cp_pack_start_sum > blocks_per_seg - 1 - 3641 NR_CURSEG_PERSIST_TYPE) { 3642 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3643 cp_pack_start_sum); 3644 return 1; 3645 } 3646 3647 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3648 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3649 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3650 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3651 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3652 le32_to_cpu(ckpt->checksum_offset)); 3653 return 1; 3654 } 3655 3656 nat_blocks = nat_segs << log_blocks_per_seg; 3657 nat_bits_bytes = nat_blocks / BITS_PER_BYTE; 3658 nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); 3659 if (__is_set_ckpt_flags(ckpt, CP_NAT_BITS_FLAG) && 3660 (cp_payload + F2FS_CP_PACKS + 3661 NR_CURSEG_PERSIST_TYPE + nat_bits_blocks >= blocks_per_seg)) { 3662 f2fs_warn(sbi, "Insane cp_payload: %u, nat_bits_blocks: %u)", 3663 cp_payload, nat_bits_blocks); 3664 return 1; 3665 } 3666 3667 if (unlikely(f2fs_cp_error(sbi))) { 3668 f2fs_err(sbi, "A bug case: need to run fsck"); 3669 return 1; 3670 } 3671 return 0; 3672 } 3673 3674 static void init_sb_info(struct f2fs_sb_info *sbi) 3675 { 3676 struct f2fs_super_block *raw_super = sbi->raw_super; 3677 int i; 3678 3679 sbi->log_sectors_per_block = 3680 le32_to_cpu(raw_super->log_sectors_per_block); 3681 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3682 sbi->blocksize = BIT(sbi->log_blocksize); 3683 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3684 sbi->blocks_per_seg = BIT(sbi->log_blocks_per_seg); 3685 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3686 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3687 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3688 sbi->total_node_count = 3689 (le32_to_cpu(raw_super->segment_count_nat) / 2) 3690 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; 3691 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3692 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3693 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3694 sbi->cur_victim_sec = NULL_SECNO; 3695 sbi->gc_mode = GC_NORMAL; 3696 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3697 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3698 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3699 sbi->migration_granularity = sbi->segs_per_sec; 3700 sbi->seq_file_ra_mul = MIN_RA_MUL; 3701 sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE; 3702 sbi->max_fragment_hole = DEF_FRAGMENT_SIZE; 3703 spin_lock_init(&sbi->gc_remaining_trials_lock); 3704 atomic64_set(&sbi->current_atomic_write, 0); 3705 3706 sbi->dir_level = DEF_DIR_LEVEL; 3707 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3708 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3709 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3710 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3711 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3712 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3713 DEF_UMOUNT_DISCARD_TIMEOUT; 3714 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3715 3716 for (i = 0; i < NR_COUNT_TYPE; i++) 3717 atomic_set(&sbi->nr_pages[i], 0); 3718 3719 for (i = 0; i < META; i++) 3720 atomic_set(&sbi->wb_sync_req[i], 0); 3721 3722 INIT_LIST_HEAD(&sbi->s_list); 3723 mutex_init(&sbi->umount_mutex); 3724 init_f2fs_rwsem(&sbi->io_order_lock); 3725 spin_lock_init(&sbi->cp_lock); 3726 3727 sbi->dirty_device = 0; 3728 spin_lock_init(&sbi->dev_lock); 3729 3730 init_f2fs_rwsem(&sbi->sb_lock); 3731 init_f2fs_rwsem(&sbi->pin_sem); 3732 } 3733 3734 static int init_percpu_info(struct f2fs_sb_info *sbi) 3735 { 3736 int err; 3737 3738 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3739 if (err) 3740 return err; 3741 3742 err = percpu_counter_init(&sbi->rf_node_block_count, 0, GFP_KERNEL); 3743 if (err) 3744 goto err_valid_block; 3745 3746 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3747 GFP_KERNEL); 3748 if (err) 3749 goto err_node_block; 3750 return 0; 3751 3752 err_node_block: 3753 percpu_counter_destroy(&sbi->rf_node_block_count); 3754 err_valid_block: 3755 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3756 return err; 3757 } 3758 3759 #ifdef CONFIG_BLK_DEV_ZONED 3760 3761 struct f2fs_report_zones_args { 3762 struct f2fs_sb_info *sbi; 3763 struct f2fs_dev_info *dev; 3764 }; 3765 3766 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3767 void *data) 3768 { 3769 struct f2fs_report_zones_args *rz_args = data; 3770 block_t unusable_blocks = (zone->len - zone->capacity) >> 3771 F2FS_LOG_SECTORS_PER_BLOCK; 3772 3773 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3774 return 0; 3775 3776 set_bit(idx, rz_args->dev->blkz_seq); 3777 if (!rz_args->sbi->unusable_blocks_per_sec) { 3778 rz_args->sbi->unusable_blocks_per_sec = unusable_blocks; 3779 return 0; 3780 } 3781 if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) { 3782 f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n"); 3783 return -EINVAL; 3784 } 3785 return 0; 3786 } 3787 3788 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3789 { 3790 struct block_device *bdev = FDEV(devi).bdev; 3791 sector_t nr_sectors = bdev_nr_sectors(bdev); 3792 struct f2fs_report_zones_args rep_zone_arg; 3793 u64 zone_sectors; 3794 int ret; 3795 3796 if (!f2fs_sb_has_blkzoned(sbi)) 3797 return 0; 3798 3799 zone_sectors = bdev_zone_sectors(bdev); 3800 if (!is_power_of_2(zone_sectors)) { 3801 f2fs_err(sbi, "F2FS does not support non power of 2 zone sizes\n"); 3802 return -EINVAL; 3803 } 3804 3805 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 3806 SECTOR_TO_BLOCK(zone_sectors)) 3807 return -EINVAL; 3808 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors); 3809 FDEV(devi).nr_blkz = div_u64(SECTOR_TO_BLOCK(nr_sectors), 3810 sbi->blocks_per_blkz); 3811 if (nr_sectors & (zone_sectors - 1)) 3812 FDEV(devi).nr_blkz++; 3813 3814 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 3815 BITS_TO_LONGS(FDEV(devi).nr_blkz) 3816 * sizeof(unsigned long), 3817 GFP_KERNEL); 3818 if (!FDEV(devi).blkz_seq) 3819 return -ENOMEM; 3820 3821 rep_zone_arg.sbi = sbi; 3822 rep_zone_arg.dev = &FDEV(devi); 3823 3824 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 3825 &rep_zone_arg); 3826 if (ret < 0) 3827 return ret; 3828 return 0; 3829 } 3830 #endif 3831 3832 /* 3833 * Read f2fs raw super block. 3834 * Because we have two copies of super block, so read both of them 3835 * to get the first valid one. If any one of them is broken, we pass 3836 * them recovery flag back to the caller. 3837 */ 3838 static int read_raw_super_block(struct f2fs_sb_info *sbi, 3839 struct f2fs_super_block **raw_super, 3840 int *valid_super_block, int *recovery) 3841 { 3842 struct super_block *sb = sbi->sb; 3843 int block; 3844 struct buffer_head *bh; 3845 struct f2fs_super_block *super; 3846 int err = 0; 3847 3848 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 3849 if (!super) 3850 return -ENOMEM; 3851 3852 for (block = 0; block < 2; block++) { 3853 bh = sb_bread(sb, block); 3854 if (!bh) { 3855 f2fs_err(sbi, "Unable to read %dth superblock", 3856 block + 1); 3857 err = -EIO; 3858 *recovery = 1; 3859 continue; 3860 } 3861 3862 /* sanity checking of raw super */ 3863 err = sanity_check_raw_super(sbi, bh); 3864 if (err) { 3865 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 3866 block + 1); 3867 brelse(bh); 3868 *recovery = 1; 3869 continue; 3870 } 3871 3872 if (!*raw_super) { 3873 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 3874 sizeof(*super)); 3875 *valid_super_block = block; 3876 *raw_super = super; 3877 } 3878 brelse(bh); 3879 } 3880 3881 /* No valid superblock */ 3882 if (!*raw_super) 3883 kfree(super); 3884 else 3885 err = 0; 3886 3887 return err; 3888 } 3889 3890 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 3891 { 3892 struct buffer_head *bh; 3893 __u32 crc = 0; 3894 int err; 3895 3896 if ((recover && f2fs_readonly(sbi->sb)) || 3897 f2fs_hw_is_readonly(sbi)) { 3898 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3899 return -EROFS; 3900 } 3901 3902 /* we should update superblock crc here */ 3903 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 3904 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 3905 offsetof(struct f2fs_super_block, crc)); 3906 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 3907 } 3908 3909 /* write back-up superblock first */ 3910 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 3911 if (!bh) 3912 return -EIO; 3913 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3914 brelse(bh); 3915 3916 /* if we are in recovery path, skip writing valid superblock */ 3917 if (recover || err) 3918 return err; 3919 3920 /* write current valid superblock */ 3921 bh = sb_bread(sbi->sb, sbi->valid_super_block); 3922 if (!bh) 3923 return -EIO; 3924 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3925 brelse(bh); 3926 return err; 3927 } 3928 3929 void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason) 3930 { 3931 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3932 int err; 3933 3934 f2fs_down_write(&sbi->sb_lock); 3935 3936 if (raw_super->s_stop_reason[reason] < GENMASK(BITS_PER_BYTE - 1, 0)) 3937 raw_super->s_stop_reason[reason]++; 3938 3939 err = f2fs_commit_super(sbi, false); 3940 if (err) 3941 f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d", 3942 reason, err); 3943 f2fs_up_write(&sbi->sb_lock); 3944 } 3945 3946 void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag) 3947 { 3948 spin_lock(&sbi->error_lock); 3949 if (!test_bit(flag, (unsigned long *)sbi->errors)) { 3950 set_bit(flag, (unsigned long *)sbi->errors); 3951 sbi->error_dirty = true; 3952 } 3953 spin_unlock(&sbi->error_lock); 3954 } 3955 3956 static bool f2fs_update_errors(struct f2fs_sb_info *sbi) 3957 { 3958 bool need_update = false; 3959 3960 spin_lock(&sbi->error_lock); 3961 if (sbi->error_dirty) { 3962 memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, 3963 MAX_F2FS_ERRORS); 3964 sbi->error_dirty = false; 3965 need_update = true; 3966 } 3967 spin_unlock(&sbi->error_lock); 3968 3969 return need_update; 3970 } 3971 3972 void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error) 3973 { 3974 int err; 3975 3976 f2fs_save_errors(sbi, error); 3977 3978 f2fs_down_write(&sbi->sb_lock); 3979 3980 if (!f2fs_update_errors(sbi)) 3981 goto out_unlock; 3982 3983 err = f2fs_commit_super(sbi, false); 3984 if (err) 3985 f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d", 3986 error, err); 3987 out_unlock: 3988 f2fs_up_write(&sbi->sb_lock); 3989 } 3990 3991 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 3992 { 3993 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3994 unsigned int max_devices = MAX_DEVICES; 3995 unsigned int logical_blksize; 3996 int i; 3997 3998 /* Initialize single device information */ 3999 if (!RDEV(0).path[0]) { 4000 if (!bdev_is_zoned(sbi->sb->s_bdev)) 4001 return 0; 4002 max_devices = 1; 4003 } 4004 4005 /* 4006 * Initialize multiple devices information, or single 4007 * zoned block device information. 4008 */ 4009 sbi->devs = f2fs_kzalloc(sbi, 4010 array_size(max_devices, 4011 sizeof(struct f2fs_dev_info)), 4012 GFP_KERNEL); 4013 if (!sbi->devs) 4014 return -ENOMEM; 4015 4016 logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev); 4017 sbi->aligned_blksize = true; 4018 4019 for (i = 0; i < max_devices; i++) { 4020 4021 if (i > 0 && !RDEV(i).path[0]) 4022 break; 4023 4024 if (max_devices == 1) { 4025 /* Single zoned block device mount */ 4026 FDEV(0).bdev = 4027 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, 4028 sbi->sb->s_mode, sbi->sb->s_type); 4029 } else { 4030 /* Multi-device mount */ 4031 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 4032 FDEV(i).total_segments = 4033 le32_to_cpu(RDEV(i).total_segments); 4034 if (i == 0) { 4035 FDEV(i).start_blk = 0; 4036 FDEV(i).end_blk = FDEV(i).start_blk + 4037 (FDEV(i).total_segments << 4038 sbi->log_blocks_per_seg) - 1 + 4039 le32_to_cpu(raw_super->segment0_blkaddr); 4040 } else { 4041 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 4042 FDEV(i).end_blk = FDEV(i).start_blk + 4043 (FDEV(i).total_segments << 4044 sbi->log_blocks_per_seg) - 1; 4045 } 4046 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, 4047 sbi->sb->s_mode, sbi->sb->s_type); 4048 } 4049 if (IS_ERR(FDEV(i).bdev)) 4050 return PTR_ERR(FDEV(i).bdev); 4051 4052 /* to release errored devices */ 4053 sbi->s_ndevs = i + 1; 4054 4055 if (logical_blksize != bdev_logical_block_size(FDEV(i).bdev)) 4056 sbi->aligned_blksize = false; 4057 4058 #ifdef CONFIG_BLK_DEV_ZONED 4059 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && 4060 !f2fs_sb_has_blkzoned(sbi)) { 4061 f2fs_err(sbi, "Zoned block device feature not enabled"); 4062 return -EINVAL; 4063 } 4064 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { 4065 if (init_blkz_info(sbi, i)) { 4066 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 4067 return -EINVAL; 4068 } 4069 if (max_devices == 1) 4070 break; 4071 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", 4072 i, FDEV(i).path, 4073 FDEV(i).total_segments, 4074 FDEV(i).start_blk, FDEV(i).end_blk, 4075 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? 4076 "Host-aware" : "Host-managed"); 4077 continue; 4078 } 4079 #endif 4080 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 4081 i, FDEV(i).path, 4082 FDEV(i).total_segments, 4083 FDEV(i).start_blk, FDEV(i).end_blk); 4084 } 4085 f2fs_info(sbi, 4086 "IO Block Size: %8ld KB", F2FS_IO_SIZE_KB(sbi)); 4087 return 0; 4088 } 4089 4090 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 4091 { 4092 #if IS_ENABLED(CONFIG_UNICODE) 4093 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 4094 const struct f2fs_sb_encodings *encoding_info; 4095 struct unicode_map *encoding; 4096 __u16 encoding_flags; 4097 4098 encoding_info = f2fs_sb_read_encoding(sbi->raw_super); 4099 if (!encoding_info) { 4100 f2fs_err(sbi, 4101 "Encoding requested by superblock is unknown"); 4102 return -EINVAL; 4103 } 4104 4105 encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags); 4106 encoding = utf8_load(encoding_info->version); 4107 if (IS_ERR(encoding)) { 4108 f2fs_err(sbi, 4109 "can't mount with superblock charset: %s-%u.%u.%u " 4110 "not supported by the kernel. flags: 0x%x.", 4111 encoding_info->name, 4112 unicode_major(encoding_info->version), 4113 unicode_minor(encoding_info->version), 4114 unicode_rev(encoding_info->version), 4115 encoding_flags); 4116 return PTR_ERR(encoding); 4117 } 4118 f2fs_info(sbi, "Using encoding defined by superblock: " 4119 "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, 4120 unicode_major(encoding_info->version), 4121 unicode_minor(encoding_info->version), 4122 unicode_rev(encoding_info->version), 4123 encoding_flags); 4124 4125 sbi->sb->s_encoding = encoding; 4126 sbi->sb->s_encoding_flags = encoding_flags; 4127 } 4128 #else 4129 if (f2fs_sb_has_casefold(sbi)) { 4130 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 4131 return -EINVAL; 4132 } 4133 #endif 4134 return 0; 4135 } 4136 4137 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 4138 { 4139 /* adjust parameters according to the volume size */ 4140 if (MAIN_SEGS(sbi) <= SMALL_VOLUME_SEGMENTS) { 4141 if (f2fs_block_unit_discard(sbi)) 4142 SM_I(sbi)->dcc_info->discard_granularity = 4143 MIN_DISCARD_GRANULARITY; 4144 if (!f2fs_lfs_mode(sbi)) 4145 SM_I(sbi)->ipu_policy = BIT(F2FS_IPU_FORCE) | 4146 BIT(F2FS_IPU_HONOR_OPU_WRITE); 4147 } 4148 4149 sbi->readdir_ra = true; 4150 } 4151 4152 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 4153 { 4154 struct f2fs_sb_info *sbi; 4155 struct f2fs_super_block *raw_super; 4156 struct inode *root; 4157 int err; 4158 bool skip_recovery = false, need_fsck = false; 4159 char *options = NULL; 4160 int recovery, i, valid_super_block; 4161 struct curseg_info *seg_i; 4162 int retry_cnt = 1; 4163 #ifdef CONFIG_QUOTA 4164 bool quota_enabled = false; 4165 #endif 4166 4167 try_onemore: 4168 err = -EINVAL; 4169 raw_super = NULL; 4170 valid_super_block = -1; 4171 recovery = 0; 4172 4173 /* allocate memory for f2fs-specific super block info */ 4174 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 4175 if (!sbi) 4176 return -ENOMEM; 4177 4178 sbi->sb = sb; 4179 4180 /* initialize locks within allocated memory */ 4181 init_f2fs_rwsem(&sbi->gc_lock); 4182 mutex_init(&sbi->writepages); 4183 init_f2fs_rwsem(&sbi->cp_global_sem); 4184 init_f2fs_rwsem(&sbi->node_write); 4185 init_f2fs_rwsem(&sbi->node_change); 4186 spin_lock_init(&sbi->stat_lock); 4187 init_f2fs_rwsem(&sbi->cp_rwsem); 4188 init_f2fs_rwsem(&sbi->quota_sem); 4189 init_waitqueue_head(&sbi->cp_wait); 4190 spin_lock_init(&sbi->error_lock); 4191 4192 for (i = 0; i < NR_INODE_TYPE; i++) { 4193 INIT_LIST_HEAD(&sbi->inode_list[i]); 4194 spin_lock_init(&sbi->inode_lock[i]); 4195 } 4196 mutex_init(&sbi->flush_lock); 4197 4198 /* Load the checksum driver */ 4199 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 4200 if (IS_ERR(sbi->s_chksum_driver)) { 4201 f2fs_err(sbi, "Cannot load crc32 driver."); 4202 err = PTR_ERR(sbi->s_chksum_driver); 4203 sbi->s_chksum_driver = NULL; 4204 goto free_sbi; 4205 } 4206 4207 /* set a block size */ 4208 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 4209 f2fs_err(sbi, "unable to set blocksize"); 4210 goto free_sbi; 4211 } 4212 4213 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 4214 &recovery); 4215 if (err) 4216 goto free_sbi; 4217 4218 sb->s_fs_info = sbi; 4219 sbi->raw_super = raw_super; 4220 4221 memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS); 4222 4223 /* precompute checksum seed for metadata */ 4224 if (f2fs_sb_has_inode_chksum(sbi)) 4225 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 4226 sizeof(raw_super->uuid)); 4227 4228 default_options(sbi); 4229 /* parse mount options */ 4230 options = kstrdup((const char *)data, GFP_KERNEL); 4231 if (data && !options) { 4232 err = -ENOMEM; 4233 goto free_sb_buf; 4234 } 4235 4236 err = parse_options(sb, options, false); 4237 if (err) 4238 goto free_options; 4239 4240 sb->s_maxbytes = max_file_blocks(NULL) << 4241 le32_to_cpu(raw_super->log_blocksize); 4242 sb->s_max_links = F2FS_LINK_MAX; 4243 4244 err = f2fs_setup_casefold(sbi); 4245 if (err) 4246 goto free_options; 4247 4248 #ifdef CONFIG_QUOTA 4249 sb->dq_op = &f2fs_quota_operations; 4250 sb->s_qcop = &f2fs_quotactl_ops; 4251 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 4252 4253 if (f2fs_sb_has_quota_ino(sbi)) { 4254 for (i = 0; i < MAXQUOTAS; i++) { 4255 if (f2fs_qf_ino(sbi->sb, i)) 4256 sbi->nquota_files++; 4257 } 4258 } 4259 #endif 4260 4261 sb->s_op = &f2fs_sops; 4262 #ifdef CONFIG_FS_ENCRYPTION 4263 sb->s_cop = &f2fs_cryptops; 4264 #endif 4265 #ifdef CONFIG_FS_VERITY 4266 sb->s_vop = &f2fs_verityops; 4267 #endif 4268 sb->s_xattr = f2fs_xattr_handlers; 4269 sb->s_export_op = &f2fs_export_ops; 4270 sb->s_magic = F2FS_SUPER_MAGIC; 4271 sb->s_time_gran = 1; 4272 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 4273 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 4274 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); 4275 sb->s_iflags |= SB_I_CGROUPWB; 4276 4277 /* init f2fs-specific super block info */ 4278 sbi->valid_super_block = valid_super_block; 4279 4280 /* disallow all the data/node/meta page writes */ 4281 set_sbi_flag(sbi, SBI_POR_DOING); 4282 4283 err = f2fs_init_write_merge_io(sbi); 4284 if (err) 4285 goto free_bio_info; 4286 4287 init_sb_info(sbi); 4288 4289 err = f2fs_init_iostat(sbi); 4290 if (err) 4291 goto free_bio_info; 4292 4293 err = init_percpu_info(sbi); 4294 if (err) 4295 goto free_iostat; 4296 4297 if (F2FS_IO_ALIGNED(sbi)) { 4298 sbi->write_io_dummy = 4299 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); 4300 if (!sbi->write_io_dummy) { 4301 err = -ENOMEM; 4302 goto free_percpu; 4303 } 4304 } 4305 4306 /* init per sbi slab cache */ 4307 err = f2fs_init_xattr_caches(sbi); 4308 if (err) 4309 goto free_io_dummy; 4310 err = f2fs_init_page_array_cache(sbi); 4311 if (err) 4312 goto free_xattr_cache; 4313 4314 /* get an inode for meta space */ 4315 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 4316 if (IS_ERR(sbi->meta_inode)) { 4317 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 4318 err = PTR_ERR(sbi->meta_inode); 4319 goto free_page_array_cache; 4320 } 4321 4322 err = f2fs_get_valid_checkpoint(sbi); 4323 if (err) { 4324 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 4325 goto free_meta_inode; 4326 } 4327 4328 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 4329 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 4330 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 4331 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4332 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 4333 } 4334 4335 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 4336 set_sbi_flag(sbi, SBI_NEED_FSCK); 4337 4338 /* Initialize device list */ 4339 err = f2fs_scan_devices(sbi); 4340 if (err) { 4341 f2fs_err(sbi, "Failed to find devices"); 4342 goto free_devices; 4343 } 4344 4345 err = f2fs_init_post_read_wq(sbi); 4346 if (err) { 4347 f2fs_err(sbi, "Failed to initialize post read workqueue"); 4348 goto free_devices; 4349 } 4350 4351 sbi->total_valid_node_count = 4352 le32_to_cpu(sbi->ckpt->valid_node_count); 4353 percpu_counter_set(&sbi->total_valid_inode_count, 4354 le32_to_cpu(sbi->ckpt->valid_inode_count)); 4355 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 4356 sbi->total_valid_block_count = 4357 le64_to_cpu(sbi->ckpt->valid_block_count); 4358 sbi->last_valid_block_count = sbi->total_valid_block_count; 4359 sbi->reserved_blocks = 0; 4360 sbi->current_reserved_blocks = 0; 4361 limit_reserve_root(sbi); 4362 adjust_unusable_cap_perc(sbi); 4363 4364 f2fs_init_extent_cache_info(sbi); 4365 4366 f2fs_init_ino_entry_info(sbi); 4367 4368 f2fs_init_fsync_node_info(sbi); 4369 4370 /* setup checkpoint request control and start checkpoint issue thread */ 4371 f2fs_init_ckpt_req_control(sbi); 4372 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 4373 test_opt(sbi, MERGE_CHECKPOINT)) { 4374 err = f2fs_start_ckpt_thread(sbi); 4375 if (err) { 4376 f2fs_err(sbi, 4377 "Failed to start F2FS issue_checkpoint_thread (%d)", 4378 err); 4379 goto stop_ckpt_thread; 4380 } 4381 } 4382 4383 /* setup f2fs internal modules */ 4384 err = f2fs_build_segment_manager(sbi); 4385 if (err) { 4386 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 4387 err); 4388 goto free_sm; 4389 } 4390 err = f2fs_build_node_manager(sbi); 4391 if (err) { 4392 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 4393 err); 4394 goto free_nm; 4395 } 4396 4397 err = adjust_reserved_segment(sbi); 4398 if (err) 4399 goto free_nm; 4400 4401 /* For write statistics */ 4402 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 4403 4404 /* Read accumulated write IO statistics if exists */ 4405 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 4406 if (__exist_node_summaries(sbi)) 4407 sbi->kbytes_written = 4408 le64_to_cpu(seg_i->journal->info.kbytes_written); 4409 4410 f2fs_build_gc_manager(sbi); 4411 4412 err = f2fs_build_stats(sbi); 4413 if (err) 4414 goto free_nm; 4415 4416 /* get an inode for node space */ 4417 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 4418 if (IS_ERR(sbi->node_inode)) { 4419 f2fs_err(sbi, "Failed to read node inode"); 4420 err = PTR_ERR(sbi->node_inode); 4421 goto free_stats; 4422 } 4423 4424 /* read root inode and dentry */ 4425 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 4426 if (IS_ERR(root)) { 4427 f2fs_err(sbi, "Failed to read root inode"); 4428 err = PTR_ERR(root); 4429 goto free_node_inode; 4430 } 4431 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 4432 !root->i_size || !root->i_nlink) { 4433 iput(root); 4434 err = -EINVAL; 4435 goto free_node_inode; 4436 } 4437 4438 sb->s_root = d_make_root(root); /* allocate root dentry */ 4439 if (!sb->s_root) { 4440 err = -ENOMEM; 4441 goto free_node_inode; 4442 } 4443 4444 err = f2fs_init_compress_inode(sbi); 4445 if (err) 4446 goto free_root_inode; 4447 4448 err = f2fs_register_sysfs(sbi); 4449 if (err) 4450 goto free_compress_inode; 4451 4452 #ifdef CONFIG_QUOTA 4453 /* Enable quota usage during mount */ 4454 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 4455 err = f2fs_enable_quotas(sb); 4456 if (err) 4457 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 4458 } 4459 4460 quota_enabled = f2fs_recover_quota_begin(sbi); 4461 #endif 4462 /* if there are any orphan inodes, free them */ 4463 err = f2fs_recover_orphan_inodes(sbi); 4464 if (err) 4465 goto free_meta; 4466 4467 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 4468 goto reset_checkpoint; 4469 4470 /* recover fsynced data */ 4471 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 4472 !test_opt(sbi, NORECOVERY)) { 4473 /* 4474 * mount should be failed, when device has readonly mode, and 4475 * previous checkpoint was not done by clean system shutdown. 4476 */ 4477 if (f2fs_hw_is_readonly(sbi)) { 4478 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4479 err = f2fs_recover_fsync_data(sbi, true); 4480 if (err > 0) { 4481 err = -EROFS; 4482 f2fs_err(sbi, "Need to recover fsync data, but " 4483 "write access unavailable, please try " 4484 "mount w/ disable_roll_forward or norecovery"); 4485 } 4486 if (err < 0) 4487 goto free_meta; 4488 } 4489 f2fs_info(sbi, "write access unavailable, skipping recovery"); 4490 goto reset_checkpoint; 4491 } 4492 4493 if (need_fsck) 4494 set_sbi_flag(sbi, SBI_NEED_FSCK); 4495 4496 if (skip_recovery) 4497 goto reset_checkpoint; 4498 4499 err = f2fs_recover_fsync_data(sbi, false); 4500 if (err < 0) { 4501 if (err != -ENOMEM) 4502 skip_recovery = true; 4503 need_fsck = true; 4504 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 4505 err); 4506 goto free_meta; 4507 } 4508 } else { 4509 err = f2fs_recover_fsync_data(sbi, true); 4510 4511 if (!f2fs_readonly(sb) && err > 0) { 4512 err = -EINVAL; 4513 f2fs_err(sbi, "Need to recover fsync data"); 4514 goto free_meta; 4515 } 4516 } 4517 4518 #ifdef CONFIG_QUOTA 4519 f2fs_recover_quota_end(sbi, quota_enabled); 4520 #endif 4521 4522 /* 4523 * If the f2fs is not readonly and fsync data recovery succeeds, 4524 * check zoned block devices' write pointer consistency. 4525 */ 4526 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) { 4527 err = f2fs_check_write_pointer(sbi); 4528 if (err) 4529 goto free_meta; 4530 } 4531 4532 reset_checkpoint: 4533 f2fs_init_inmem_curseg(sbi); 4534 4535 /* f2fs_recover_fsync_data() cleared this already */ 4536 clear_sbi_flag(sbi, SBI_POR_DOING); 4537 4538 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4539 err = f2fs_disable_checkpoint(sbi); 4540 if (err) 4541 goto sync_free_meta; 4542 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4543 f2fs_enable_checkpoint(sbi); 4544 } 4545 4546 /* 4547 * If filesystem is not mounted as read-only then 4548 * do start the gc_thread. 4549 */ 4550 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4551 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4552 /* After POR, we can run background GC thread.*/ 4553 err = f2fs_start_gc_thread(sbi); 4554 if (err) 4555 goto sync_free_meta; 4556 } 4557 kvfree(options); 4558 4559 /* recover broken superblock */ 4560 if (recovery) { 4561 err = f2fs_commit_super(sbi, true); 4562 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4563 sbi->valid_super_block ? 1 : 2, err); 4564 } 4565 4566 f2fs_join_shrinker(sbi); 4567 4568 f2fs_tuning_parameters(sbi); 4569 4570 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4571 cur_cp_version(F2FS_CKPT(sbi))); 4572 f2fs_update_time(sbi, CP_TIME); 4573 f2fs_update_time(sbi, REQ_TIME); 4574 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4575 return 0; 4576 4577 sync_free_meta: 4578 /* safe to flush all the data */ 4579 sync_filesystem(sbi->sb); 4580 retry_cnt = 0; 4581 4582 free_meta: 4583 #ifdef CONFIG_QUOTA 4584 f2fs_truncate_quota_inode_pages(sb); 4585 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4586 f2fs_quota_off_umount(sbi->sb); 4587 #endif 4588 /* 4589 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4590 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4591 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4592 * falls into an infinite loop in f2fs_sync_meta_pages(). 4593 */ 4594 truncate_inode_pages_final(META_MAPPING(sbi)); 4595 /* evict some inodes being cached by GC */ 4596 evict_inodes(sb); 4597 f2fs_unregister_sysfs(sbi); 4598 free_compress_inode: 4599 f2fs_destroy_compress_inode(sbi); 4600 free_root_inode: 4601 dput(sb->s_root); 4602 sb->s_root = NULL; 4603 free_node_inode: 4604 f2fs_release_ino_entry(sbi, true); 4605 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4606 iput(sbi->node_inode); 4607 sbi->node_inode = NULL; 4608 free_stats: 4609 f2fs_destroy_stats(sbi); 4610 free_nm: 4611 /* stop discard thread before destroying node manager */ 4612 f2fs_stop_discard_thread(sbi); 4613 f2fs_destroy_node_manager(sbi); 4614 free_sm: 4615 f2fs_destroy_segment_manager(sbi); 4616 stop_ckpt_thread: 4617 f2fs_stop_ckpt_thread(sbi); 4618 f2fs_destroy_post_read_wq(sbi); 4619 free_devices: 4620 destroy_device_list(sbi); 4621 kvfree(sbi->ckpt); 4622 free_meta_inode: 4623 make_bad_inode(sbi->meta_inode); 4624 iput(sbi->meta_inode); 4625 sbi->meta_inode = NULL; 4626 free_page_array_cache: 4627 f2fs_destroy_page_array_cache(sbi); 4628 free_xattr_cache: 4629 f2fs_destroy_xattr_caches(sbi); 4630 free_io_dummy: 4631 mempool_destroy(sbi->write_io_dummy); 4632 free_percpu: 4633 destroy_percpu_info(sbi); 4634 free_iostat: 4635 f2fs_destroy_iostat(sbi); 4636 free_bio_info: 4637 for (i = 0; i < NR_PAGE_TYPE; i++) 4638 kvfree(sbi->write_io[i]); 4639 4640 #if IS_ENABLED(CONFIG_UNICODE) 4641 utf8_unload(sb->s_encoding); 4642 sb->s_encoding = NULL; 4643 #endif 4644 free_options: 4645 #ifdef CONFIG_QUOTA 4646 for (i = 0; i < MAXQUOTAS; i++) 4647 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4648 #endif 4649 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4650 kvfree(options); 4651 free_sb_buf: 4652 kfree(raw_super); 4653 free_sbi: 4654 if (sbi->s_chksum_driver) 4655 crypto_free_shash(sbi->s_chksum_driver); 4656 kfree(sbi); 4657 4658 /* give only one another chance */ 4659 if (retry_cnt > 0 && skip_recovery) { 4660 retry_cnt--; 4661 shrink_dcache_sb(sb); 4662 goto try_onemore; 4663 } 4664 return err; 4665 } 4666 4667 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4668 const char *dev_name, void *data) 4669 { 4670 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4671 } 4672 4673 static void kill_f2fs_super(struct super_block *sb) 4674 { 4675 if (sb->s_root) { 4676 struct f2fs_sb_info *sbi = F2FS_SB(sb); 4677 4678 set_sbi_flag(sbi, SBI_IS_CLOSE); 4679 f2fs_stop_gc_thread(sbi); 4680 f2fs_stop_discard_thread(sbi); 4681 4682 #ifdef CONFIG_F2FS_FS_COMPRESSION 4683 /* 4684 * latter evict_inode() can bypass checking and invalidating 4685 * compress inode cache. 4686 */ 4687 if (test_opt(sbi, COMPRESS_CACHE)) 4688 truncate_inode_pages_final(COMPRESS_MAPPING(sbi)); 4689 #endif 4690 4691 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 4692 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4693 struct cp_control cpc = { 4694 .reason = CP_UMOUNT, 4695 }; 4696 f2fs_write_checkpoint(sbi, &cpc); 4697 } 4698 4699 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 4700 sb->s_flags &= ~SB_RDONLY; 4701 } 4702 kill_block_super(sb); 4703 } 4704 4705 static struct file_system_type f2fs_fs_type = { 4706 .owner = THIS_MODULE, 4707 .name = "f2fs", 4708 .mount = f2fs_mount, 4709 .kill_sb = kill_f2fs_super, 4710 .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, 4711 }; 4712 MODULE_ALIAS_FS("f2fs"); 4713 4714 static int __init init_inodecache(void) 4715 { 4716 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 4717 sizeof(struct f2fs_inode_info), 0, 4718 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 4719 return f2fs_inode_cachep ? 0 : -ENOMEM; 4720 } 4721 4722 static void destroy_inodecache(void) 4723 { 4724 /* 4725 * Make sure all delayed rcu free inodes are flushed before we 4726 * destroy cache. 4727 */ 4728 rcu_barrier(); 4729 kmem_cache_destroy(f2fs_inode_cachep); 4730 } 4731 4732 static int __init init_f2fs_fs(void) 4733 { 4734 int err; 4735 4736 if (PAGE_SIZE != F2FS_BLKSIZE) { 4737 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n", 4738 PAGE_SIZE, F2FS_BLKSIZE); 4739 return -EINVAL; 4740 } 4741 4742 err = init_inodecache(); 4743 if (err) 4744 goto fail; 4745 err = f2fs_create_node_manager_caches(); 4746 if (err) 4747 goto free_inodecache; 4748 err = f2fs_create_segment_manager_caches(); 4749 if (err) 4750 goto free_node_manager_caches; 4751 err = f2fs_create_checkpoint_caches(); 4752 if (err) 4753 goto free_segment_manager_caches; 4754 err = f2fs_create_recovery_cache(); 4755 if (err) 4756 goto free_checkpoint_caches; 4757 err = f2fs_create_extent_cache(); 4758 if (err) 4759 goto free_recovery_cache; 4760 err = f2fs_create_garbage_collection_cache(); 4761 if (err) 4762 goto free_extent_cache; 4763 err = f2fs_init_sysfs(); 4764 if (err) 4765 goto free_garbage_collection_cache; 4766 err = register_shrinker(&f2fs_shrinker_info, "f2fs-shrinker"); 4767 if (err) 4768 goto free_sysfs; 4769 err = register_filesystem(&f2fs_fs_type); 4770 if (err) 4771 goto free_shrinker; 4772 f2fs_create_root_stats(); 4773 err = f2fs_init_post_read_processing(); 4774 if (err) 4775 goto free_root_stats; 4776 err = f2fs_init_iostat_processing(); 4777 if (err) 4778 goto free_post_read; 4779 err = f2fs_init_bio_entry_cache(); 4780 if (err) 4781 goto free_iostat; 4782 err = f2fs_init_bioset(); 4783 if (err) 4784 goto free_bio_entry_cache; 4785 err = f2fs_init_compress_mempool(); 4786 if (err) 4787 goto free_bioset; 4788 err = f2fs_init_compress_cache(); 4789 if (err) 4790 goto free_compress_mempool; 4791 err = f2fs_create_casefold_cache(); 4792 if (err) 4793 goto free_compress_cache; 4794 return 0; 4795 free_compress_cache: 4796 f2fs_destroy_compress_cache(); 4797 free_compress_mempool: 4798 f2fs_destroy_compress_mempool(); 4799 free_bioset: 4800 f2fs_destroy_bioset(); 4801 free_bio_entry_cache: 4802 f2fs_destroy_bio_entry_cache(); 4803 free_iostat: 4804 f2fs_destroy_iostat_processing(); 4805 free_post_read: 4806 f2fs_destroy_post_read_processing(); 4807 free_root_stats: 4808 f2fs_destroy_root_stats(); 4809 unregister_filesystem(&f2fs_fs_type); 4810 free_shrinker: 4811 unregister_shrinker(&f2fs_shrinker_info); 4812 free_sysfs: 4813 f2fs_exit_sysfs(); 4814 free_garbage_collection_cache: 4815 f2fs_destroy_garbage_collection_cache(); 4816 free_extent_cache: 4817 f2fs_destroy_extent_cache(); 4818 free_recovery_cache: 4819 f2fs_destroy_recovery_cache(); 4820 free_checkpoint_caches: 4821 f2fs_destroy_checkpoint_caches(); 4822 free_segment_manager_caches: 4823 f2fs_destroy_segment_manager_caches(); 4824 free_node_manager_caches: 4825 f2fs_destroy_node_manager_caches(); 4826 free_inodecache: 4827 destroy_inodecache(); 4828 fail: 4829 return err; 4830 } 4831 4832 static void __exit exit_f2fs_fs(void) 4833 { 4834 f2fs_destroy_casefold_cache(); 4835 f2fs_destroy_compress_cache(); 4836 f2fs_destroy_compress_mempool(); 4837 f2fs_destroy_bioset(); 4838 f2fs_destroy_bio_entry_cache(); 4839 f2fs_destroy_iostat_processing(); 4840 f2fs_destroy_post_read_processing(); 4841 f2fs_destroy_root_stats(); 4842 unregister_filesystem(&f2fs_fs_type); 4843 unregister_shrinker(&f2fs_shrinker_info); 4844 f2fs_exit_sysfs(); 4845 f2fs_destroy_garbage_collection_cache(); 4846 f2fs_destroy_extent_cache(); 4847 f2fs_destroy_recovery_cache(); 4848 f2fs_destroy_checkpoint_caches(); 4849 f2fs_destroy_segment_manager_caches(); 4850 f2fs_destroy_node_manager_caches(); 4851 destroy_inodecache(); 4852 } 4853 4854 module_init(init_f2fs_fs) 4855 module_exit(exit_f2fs_fs) 4856 4857 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 4858 MODULE_DESCRIPTION("Flash Friendly File System"); 4859 MODULE_LICENSE("GPL"); 4860 MODULE_SOFTDEP("pre: crc32"); 4861 4862