1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * fs/f2fs/super.c 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 */ 8 #include <linux/module.h> 9 #include <linux/init.h> 10 #include <linux/fs.h> 11 #include <linux/statfs.h> 12 #include <linux/buffer_head.h> 13 #include <linux/backing-dev.h> 14 #include <linux/kthread.h> 15 #include <linux/parser.h> 16 #include <linux/mount.h> 17 #include <linux/seq_file.h> 18 #include <linux/proc_fs.h> 19 #include <linux/random.h> 20 #include <linux/exportfs.h> 21 #include <linux/blkdev.h> 22 #include <linux/quotaops.h> 23 #include <linux/f2fs_fs.h> 24 #include <linux/sysfs.h> 25 #include <linux/quota.h> 26 #include <linux/unicode.h> 27 #include <linux/part_stat.h> 28 #include <linux/zstd.h> 29 #include <linux/lz4.h> 30 31 #include "f2fs.h" 32 #include "node.h" 33 #include "segment.h" 34 #include "xattr.h" 35 #include "gc.h" 36 37 #define CREATE_TRACE_POINTS 38 #include <trace/events/f2fs.h> 39 40 static struct kmem_cache *f2fs_inode_cachep; 41 42 #ifdef CONFIG_F2FS_FAULT_INJECTION 43 44 const char *f2fs_fault_name[FAULT_MAX] = { 45 [FAULT_KMALLOC] = "kmalloc", 46 [FAULT_KVMALLOC] = "kvmalloc", 47 [FAULT_PAGE_ALLOC] = "page alloc", 48 [FAULT_PAGE_GET] = "page get", 49 [FAULT_ALLOC_NID] = "alloc nid", 50 [FAULT_ORPHAN] = "orphan", 51 [FAULT_BLOCK] = "no more block", 52 [FAULT_DIR_DEPTH] = "too big dir depth", 53 [FAULT_EVICT_INODE] = "evict_inode fail", 54 [FAULT_TRUNCATE] = "truncate fail", 55 [FAULT_READ_IO] = "read IO error", 56 [FAULT_CHECKPOINT] = "checkpoint error", 57 [FAULT_DISCARD] = "discard error", 58 [FAULT_WRITE_IO] = "write IO error", 59 }; 60 61 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, 62 unsigned int type) 63 { 64 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; 65 66 if (rate) { 67 atomic_set(&ffi->inject_ops, 0); 68 ffi->inject_rate = rate; 69 } 70 71 if (type) 72 ffi->inject_type = type; 73 74 if (!rate && !type) 75 memset(ffi, 0, sizeof(struct f2fs_fault_info)); 76 } 77 #endif 78 79 /* f2fs-wide shrinker description */ 80 static struct shrinker f2fs_shrinker_info = { 81 .scan_objects = f2fs_shrink_scan, 82 .count_objects = f2fs_shrink_count, 83 .seeks = DEFAULT_SEEKS, 84 }; 85 86 enum { 87 Opt_gc_background, 88 Opt_disable_roll_forward, 89 Opt_norecovery, 90 Opt_discard, 91 Opt_nodiscard, 92 Opt_noheap, 93 Opt_heap, 94 Opt_user_xattr, 95 Opt_nouser_xattr, 96 Opt_acl, 97 Opt_noacl, 98 Opt_active_logs, 99 Opt_disable_ext_identify, 100 Opt_inline_xattr, 101 Opt_noinline_xattr, 102 Opt_inline_xattr_size, 103 Opt_inline_data, 104 Opt_inline_dentry, 105 Opt_noinline_dentry, 106 Opt_flush_merge, 107 Opt_noflush_merge, 108 Opt_nobarrier, 109 Opt_fastboot, 110 Opt_extent_cache, 111 Opt_noextent_cache, 112 Opt_noinline_data, 113 Opt_data_flush, 114 Opt_reserve_root, 115 Opt_resgid, 116 Opt_resuid, 117 Opt_mode, 118 Opt_io_size_bits, 119 Opt_fault_injection, 120 Opt_fault_type, 121 Opt_lazytime, 122 Opt_nolazytime, 123 Opt_quota, 124 Opt_noquota, 125 Opt_usrquota, 126 Opt_grpquota, 127 Opt_prjquota, 128 Opt_usrjquota, 129 Opt_grpjquota, 130 Opt_prjjquota, 131 Opt_offusrjquota, 132 Opt_offgrpjquota, 133 Opt_offprjjquota, 134 Opt_jqfmt_vfsold, 135 Opt_jqfmt_vfsv0, 136 Opt_jqfmt_vfsv1, 137 Opt_whint, 138 Opt_alloc, 139 Opt_fsync, 140 Opt_test_dummy_encryption, 141 Opt_inlinecrypt, 142 Opt_checkpoint_disable, 143 Opt_checkpoint_disable_cap, 144 Opt_checkpoint_disable_cap_perc, 145 Opt_checkpoint_enable, 146 Opt_checkpoint_merge, 147 Opt_nocheckpoint_merge, 148 Opt_compress_algorithm, 149 Opt_compress_log_size, 150 Opt_compress_extension, 151 Opt_compress_chksum, 152 Opt_compress_mode, 153 Opt_atgc, 154 Opt_gc_merge, 155 Opt_nogc_merge, 156 Opt_err, 157 }; 158 159 static match_table_t f2fs_tokens = { 160 {Opt_gc_background, "background_gc=%s"}, 161 {Opt_disable_roll_forward, "disable_roll_forward"}, 162 {Opt_norecovery, "norecovery"}, 163 {Opt_discard, "discard"}, 164 {Opt_nodiscard, "nodiscard"}, 165 {Opt_noheap, "no_heap"}, 166 {Opt_heap, "heap"}, 167 {Opt_user_xattr, "user_xattr"}, 168 {Opt_nouser_xattr, "nouser_xattr"}, 169 {Opt_acl, "acl"}, 170 {Opt_noacl, "noacl"}, 171 {Opt_active_logs, "active_logs=%u"}, 172 {Opt_disable_ext_identify, "disable_ext_identify"}, 173 {Opt_inline_xattr, "inline_xattr"}, 174 {Opt_noinline_xattr, "noinline_xattr"}, 175 {Opt_inline_xattr_size, "inline_xattr_size=%u"}, 176 {Opt_inline_data, "inline_data"}, 177 {Opt_inline_dentry, "inline_dentry"}, 178 {Opt_noinline_dentry, "noinline_dentry"}, 179 {Opt_flush_merge, "flush_merge"}, 180 {Opt_noflush_merge, "noflush_merge"}, 181 {Opt_nobarrier, "nobarrier"}, 182 {Opt_fastboot, "fastboot"}, 183 {Opt_extent_cache, "extent_cache"}, 184 {Opt_noextent_cache, "noextent_cache"}, 185 {Opt_noinline_data, "noinline_data"}, 186 {Opt_data_flush, "data_flush"}, 187 {Opt_reserve_root, "reserve_root=%u"}, 188 {Opt_resgid, "resgid=%u"}, 189 {Opt_resuid, "resuid=%u"}, 190 {Opt_mode, "mode=%s"}, 191 {Opt_io_size_bits, "io_bits=%u"}, 192 {Opt_fault_injection, "fault_injection=%u"}, 193 {Opt_fault_type, "fault_type=%u"}, 194 {Opt_lazytime, "lazytime"}, 195 {Opt_nolazytime, "nolazytime"}, 196 {Opt_quota, "quota"}, 197 {Opt_noquota, "noquota"}, 198 {Opt_usrquota, "usrquota"}, 199 {Opt_grpquota, "grpquota"}, 200 {Opt_prjquota, "prjquota"}, 201 {Opt_usrjquota, "usrjquota=%s"}, 202 {Opt_grpjquota, "grpjquota=%s"}, 203 {Opt_prjjquota, "prjjquota=%s"}, 204 {Opt_offusrjquota, "usrjquota="}, 205 {Opt_offgrpjquota, "grpjquota="}, 206 {Opt_offprjjquota, "prjjquota="}, 207 {Opt_jqfmt_vfsold, "jqfmt=vfsold"}, 208 {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"}, 209 {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"}, 210 {Opt_whint, "whint_mode=%s"}, 211 {Opt_alloc, "alloc_mode=%s"}, 212 {Opt_fsync, "fsync_mode=%s"}, 213 {Opt_test_dummy_encryption, "test_dummy_encryption=%s"}, 214 {Opt_test_dummy_encryption, "test_dummy_encryption"}, 215 {Opt_inlinecrypt, "inlinecrypt"}, 216 {Opt_checkpoint_disable, "checkpoint=disable"}, 217 {Opt_checkpoint_disable_cap, "checkpoint=disable:%u"}, 218 {Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"}, 219 {Opt_checkpoint_enable, "checkpoint=enable"}, 220 {Opt_checkpoint_merge, "checkpoint_merge"}, 221 {Opt_nocheckpoint_merge, "nocheckpoint_merge"}, 222 {Opt_compress_algorithm, "compress_algorithm=%s"}, 223 {Opt_compress_log_size, "compress_log_size=%u"}, 224 {Opt_compress_extension, "compress_extension=%s"}, 225 {Opt_compress_chksum, "compress_chksum"}, 226 {Opt_compress_mode, "compress_mode=%s"}, 227 {Opt_atgc, "atgc"}, 228 {Opt_gc_merge, "gc_merge"}, 229 {Opt_nogc_merge, "nogc_merge"}, 230 {Opt_err, NULL}, 231 }; 232 233 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...) 234 { 235 struct va_format vaf; 236 va_list args; 237 int level; 238 239 va_start(args, fmt); 240 241 level = printk_get_level(fmt); 242 vaf.fmt = printk_skip_level(fmt); 243 vaf.va = &args; 244 printk("%c%cF2FS-fs (%s): %pV\n", 245 KERN_SOH_ASCII, level, sbi->sb->s_id, &vaf); 246 247 va_end(args); 248 } 249 250 #ifdef CONFIG_UNICODE 251 static const struct f2fs_sb_encodings { 252 __u16 magic; 253 char *name; 254 char *version; 255 } f2fs_sb_encoding_map[] = { 256 {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"}, 257 }; 258 259 static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb, 260 const struct f2fs_sb_encodings **encoding, 261 __u16 *flags) 262 { 263 __u16 magic = le16_to_cpu(sb->s_encoding); 264 int i; 265 266 for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++) 267 if (magic == f2fs_sb_encoding_map[i].magic) 268 break; 269 270 if (i >= ARRAY_SIZE(f2fs_sb_encoding_map)) 271 return -EINVAL; 272 273 *encoding = &f2fs_sb_encoding_map[i]; 274 *flags = le16_to_cpu(sb->s_encoding_flags); 275 276 return 0; 277 } 278 #endif 279 280 static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 281 { 282 block_t limit = min((sbi->user_block_count << 1) / 1000, 283 sbi->user_block_count - sbi->reserved_blocks); 284 285 /* limit is 0.2% */ 286 if (test_opt(sbi, RESERVE_ROOT) && 287 F2FS_OPTION(sbi).root_reserved_blocks > limit) { 288 F2FS_OPTION(sbi).root_reserved_blocks = limit; 289 f2fs_info(sbi, "Reduce reserved blocks for root = %u", 290 F2FS_OPTION(sbi).root_reserved_blocks); 291 } 292 if (!test_opt(sbi, RESERVE_ROOT) && 293 (!uid_eq(F2FS_OPTION(sbi).s_resuid, 294 make_kuid(&init_user_ns, F2FS_DEF_RESUID)) || 295 !gid_eq(F2FS_OPTION(sbi).s_resgid, 296 make_kgid(&init_user_ns, F2FS_DEF_RESGID)))) 297 f2fs_info(sbi, "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root", 298 from_kuid_munged(&init_user_ns, 299 F2FS_OPTION(sbi).s_resuid), 300 from_kgid_munged(&init_user_ns, 301 F2FS_OPTION(sbi).s_resgid)); 302 } 303 304 static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi) 305 { 306 if (!F2FS_OPTION(sbi).unusable_cap_perc) 307 return; 308 309 if (F2FS_OPTION(sbi).unusable_cap_perc == 100) 310 F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count; 311 else 312 F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) * 313 F2FS_OPTION(sbi).unusable_cap_perc; 314 315 f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%", 316 F2FS_OPTION(sbi).unusable_cap, 317 F2FS_OPTION(sbi).unusable_cap_perc); 318 } 319 320 static void init_once(void *foo) 321 { 322 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; 323 324 inode_init_once(&fi->vfs_inode); 325 } 326 327 #ifdef CONFIG_QUOTA 328 static const char * const quotatypes[] = INITQFNAMES; 329 #define QTYPE2NAME(t) (quotatypes[t]) 330 static int f2fs_set_qf_name(struct super_block *sb, int qtype, 331 substring_t *args) 332 { 333 struct f2fs_sb_info *sbi = F2FS_SB(sb); 334 char *qname; 335 int ret = -EINVAL; 336 337 if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) { 338 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 339 return -EINVAL; 340 } 341 if (f2fs_sb_has_quota_ino(sbi)) { 342 f2fs_info(sbi, "QUOTA feature is enabled, so ignore qf_name"); 343 return 0; 344 } 345 346 qname = match_strdup(args); 347 if (!qname) { 348 f2fs_err(sbi, "Not enough memory for storing quotafile name"); 349 return -ENOMEM; 350 } 351 if (F2FS_OPTION(sbi).s_qf_names[qtype]) { 352 if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0) 353 ret = 0; 354 else 355 f2fs_err(sbi, "%s quota file already specified", 356 QTYPE2NAME(qtype)); 357 goto errout; 358 } 359 if (strchr(qname, '/')) { 360 f2fs_err(sbi, "quotafile must be on filesystem root"); 361 goto errout; 362 } 363 F2FS_OPTION(sbi).s_qf_names[qtype] = qname; 364 set_opt(sbi, QUOTA); 365 return 0; 366 errout: 367 kfree(qname); 368 return ret; 369 } 370 371 static int f2fs_clear_qf_name(struct super_block *sb, int qtype) 372 { 373 struct f2fs_sb_info *sbi = F2FS_SB(sb); 374 375 if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) { 376 f2fs_err(sbi, "Cannot change journaled quota options when quota turned on"); 377 return -EINVAL; 378 } 379 kfree(F2FS_OPTION(sbi).s_qf_names[qtype]); 380 F2FS_OPTION(sbi).s_qf_names[qtype] = NULL; 381 return 0; 382 } 383 384 static int f2fs_check_quota_options(struct f2fs_sb_info *sbi) 385 { 386 /* 387 * We do the test below only for project quotas. 'usrquota' and 388 * 'grpquota' mount options are allowed even without quota feature 389 * to support legacy quotas in quota files. 390 */ 391 if (test_opt(sbi, PRJQUOTA) && !f2fs_sb_has_project_quota(sbi)) { 392 f2fs_err(sbi, "Project quota feature not enabled. Cannot enable project quota enforcement."); 393 return -1; 394 } 395 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || 396 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || 397 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) { 398 if (test_opt(sbi, USRQUOTA) && 399 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 400 clear_opt(sbi, USRQUOTA); 401 402 if (test_opt(sbi, GRPQUOTA) && 403 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 404 clear_opt(sbi, GRPQUOTA); 405 406 if (test_opt(sbi, PRJQUOTA) && 407 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 408 clear_opt(sbi, PRJQUOTA); 409 410 if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) || 411 test_opt(sbi, PRJQUOTA)) { 412 f2fs_err(sbi, "old and new quota format mixing"); 413 return -1; 414 } 415 416 if (!F2FS_OPTION(sbi).s_jquota_fmt) { 417 f2fs_err(sbi, "journaled quota format not specified"); 418 return -1; 419 } 420 } 421 422 if (f2fs_sb_has_quota_ino(sbi) && F2FS_OPTION(sbi).s_jquota_fmt) { 423 f2fs_info(sbi, "QUOTA feature is enabled, so ignore jquota_fmt"); 424 F2FS_OPTION(sbi).s_jquota_fmt = 0; 425 } 426 return 0; 427 } 428 #endif 429 430 static int f2fs_set_test_dummy_encryption(struct super_block *sb, 431 const char *opt, 432 const substring_t *arg, 433 bool is_remount) 434 { 435 struct f2fs_sb_info *sbi = F2FS_SB(sb); 436 #ifdef CONFIG_FS_ENCRYPTION 437 int err; 438 439 if (!f2fs_sb_has_encrypt(sbi)) { 440 f2fs_err(sbi, "Encrypt feature is off"); 441 return -EINVAL; 442 } 443 444 /* 445 * This mount option is just for testing, and it's not worthwhile to 446 * implement the extra complexity (e.g. RCU protection) that would be 447 * needed to allow it to be set or changed during remount. We do allow 448 * it to be specified during remount, but only if there is no change. 449 */ 450 if (is_remount && !F2FS_OPTION(sbi).dummy_enc_policy.policy) { 451 f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); 452 return -EINVAL; 453 } 454 err = fscrypt_set_test_dummy_encryption( 455 sb, arg->from, &F2FS_OPTION(sbi).dummy_enc_policy); 456 if (err) { 457 if (err == -EEXIST) 458 f2fs_warn(sbi, 459 "Can't change test_dummy_encryption on remount"); 460 else if (err == -EINVAL) 461 f2fs_warn(sbi, "Value of option \"%s\" is unrecognized", 462 opt); 463 else 464 f2fs_warn(sbi, "Error processing option \"%s\" [%d]", 465 opt, err); 466 return -EINVAL; 467 } 468 f2fs_warn(sbi, "Test dummy encryption mode enabled"); 469 #else 470 f2fs_warn(sbi, "Test dummy encryption mount option ignored"); 471 #endif 472 return 0; 473 } 474 475 #ifdef CONFIG_F2FS_FS_COMPRESSION 476 #ifdef CONFIG_F2FS_FS_LZ4 477 static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) 478 { 479 #ifdef CONFIG_F2FS_FS_LZ4HC 480 unsigned int level; 481 #endif 482 483 if (strlen(str) == 3) { 484 F2FS_OPTION(sbi).compress_level = 0; 485 return 0; 486 } 487 488 #ifdef CONFIG_F2FS_FS_LZ4HC 489 str += 3; 490 491 if (str[0] != ':') { 492 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 493 return -EINVAL; 494 } 495 if (kstrtouint(str + 1, 10, &level)) 496 return -EINVAL; 497 498 if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) { 499 f2fs_info(sbi, "invalid lz4hc compress level: %d", level); 500 return -EINVAL; 501 } 502 503 F2FS_OPTION(sbi).compress_level = level; 504 return 0; 505 #else 506 f2fs_info(sbi, "kernel doesn't support lz4hc compression"); 507 return -EINVAL; 508 #endif 509 } 510 #endif 511 512 #ifdef CONFIG_F2FS_FS_ZSTD 513 static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str) 514 { 515 unsigned int level; 516 int len = 4; 517 518 if (strlen(str) == len) { 519 F2FS_OPTION(sbi).compress_level = 0; 520 return 0; 521 } 522 523 str += len; 524 525 if (str[0] != ':') { 526 f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>"); 527 return -EINVAL; 528 } 529 if (kstrtouint(str + 1, 10, &level)) 530 return -EINVAL; 531 532 if (!level || level > ZSTD_maxCLevel()) { 533 f2fs_info(sbi, "invalid zstd compress level: %d", level); 534 return -EINVAL; 535 } 536 537 F2FS_OPTION(sbi).compress_level = level; 538 return 0; 539 } 540 #endif 541 #endif 542 543 static int parse_options(struct super_block *sb, char *options, bool is_remount) 544 { 545 struct f2fs_sb_info *sbi = F2FS_SB(sb); 546 substring_t args[MAX_OPT_ARGS]; 547 #ifdef CONFIG_F2FS_FS_COMPRESSION 548 unsigned char (*ext)[F2FS_EXTENSION_LEN]; 549 int ext_cnt; 550 #endif 551 char *p, *name; 552 int arg = 0; 553 kuid_t uid; 554 kgid_t gid; 555 int ret; 556 557 if (!options) 558 return 0; 559 560 while ((p = strsep(&options, ",")) != NULL) { 561 int token; 562 563 if (!*p) 564 continue; 565 /* 566 * Initialize args struct so we know whether arg was 567 * found; some options take optional arguments. 568 */ 569 args[0].to = args[0].from = NULL; 570 token = match_token(p, f2fs_tokens, args); 571 572 switch (token) { 573 case Opt_gc_background: 574 name = match_strdup(&args[0]); 575 576 if (!name) 577 return -ENOMEM; 578 if (!strcmp(name, "on")) { 579 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 580 } else if (!strcmp(name, "off")) { 581 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_OFF; 582 } else if (!strcmp(name, "sync")) { 583 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_SYNC; 584 } else { 585 kfree(name); 586 return -EINVAL; 587 } 588 kfree(name); 589 break; 590 case Opt_disable_roll_forward: 591 set_opt(sbi, DISABLE_ROLL_FORWARD); 592 break; 593 case Opt_norecovery: 594 /* this option mounts f2fs with ro */ 595 set_opt(sbi, NORECOVERY); 596 if (!f2fs_readonly(sb)) 597 return -EINVAL; 598 break; 599 case Opt_discard: 600 set_opt(sbi, DISCARD); 601 break; 602 case Opt_nodiscard: 603 if (f2fs_sb_has_blkzoned(sbi)) { 604 f2fs_warn(sbi, "discard is required for zoned block devices"); 605 return -EINVAL; 606 } 607 clear_opt(sbi, DISCARD); 608 break; 609 case Opt_noheap: 610 set_opt(sbi, NOHEAP); 611 break; 612 case Opt_heap: 613 clear_opt(sbi, NOHEAP); 614 break; 615 #ifdef CONFIG_F2FS_FS_XATTR 616 case Opt_user_xattr: 617 set_opt(sbi, XATTR_USER); 618 break; 619 case Opt_nouser_xattr: 620 clear_opt(sbi, XATTR_USER); 621 break; 622 case Opt_inline_xattr: 623 set_opt(sbi, INLINE_XATTR); 624 break; 625 case Opt_noinline_xattr: 626 clear_opt(sbi, INLINE_XATTR); 627 break; 628 case Opt_inline_xattr_size: 629 if (args->from && match_int(args, &arg)) 630 return -EINVAL; 631 set_opt(sbi, INLINE_XATTR_SIZE); 632 F2FS_OPTION(sbi).inline_xattr_size = arg; 633 break; 634 #else 635 case Opt_user_xattr: 636 f2fs_info(sbi, "user_xattr options not supported"); 637 break; 638 case Opt_nouser_xattr: 639 f2fs_info(sbi, "nouser_xattr options not supported"); 640 break; 641 case Opt_inline_xattr: 642 f2fs_info(sbi, "inline_xattr options not supported"); 643 break; 644 case Opt_noinline_xattr: 645 f2fs_info(sbi, "noinline_xattr options not supported"); 646 break; 647 #endif 648 #ifdef CONFIG_F2FS_FS_POSIX_ACL 649 case Opt_acl: 650 set_opt(sbi, POSIX_ACL); 651 break; 652 case Opt_noacl: 653 clear_opt(sbi, POSIX_ACL); 654 break; 655 #else 656 case Opt_acl: 657 f2fs_info(sbi, "acl options not supported"); 658 break; 659 case Opt_noacl: 660 f2fs_info(sbi, "noacl options not supported"); 661 break; 662 #endif 663 case Opt_active_logs: 664 if (args->from && match_int(args, &arg)) 665 return -EINVAL; 666 if (arg != 2 && arg != 4 && 667 arg != NR_CURSEG_PERSIST_TYPE) 668 return -EINVAL; 669 F2FS_OPTION(sbi).active_logs = arg; 670 break; 671 case Opt_disable_ext_identify: 672 set_opt(sbi, DISABLE_EXT_IDENTIFY); 673 break; 674 case Opt_inline_data: 675 set_opt(sbi, INLINE_DATA); 676 break; 677 case Opt_inline_dentry: 678 set_opt(sbi, INLINE_DENTRY); 679 break; 680 case Opt_noinline_dentry: 681 clear_opt(sbi, INLINE_DENTRY); 682 break; 683 case Opt_flush_merge: 684 set_opt(sbi, FLUSH_MERGE); 685 break; 686 case Opt_noflush_merge: 687 clear_opt(sbi, FLUSH_MERGE); 688 break; 689 case Opt_nobarrier: 690 set_opt(sbi, NOBARRIER); 691 break; 692 case Opt_fastboot: 693 set_opt(sbi, FASTBOOT); 694 break; 695 case Opt_extent_cache: 696 set_opt(sbi, EXTENT_CACHE); 697 break; 698 case Opt_noextent_cache: 699 clear_opt(sbi, EXTENT_CACHE); 700 break; 701 case Opt_noinline_data: 702 clear_opt(sbi, INLINE_DATA); 703 break; 704 case Opt_data_flush: 705 set_opt(sbi, DATA_FLUSH); 706 break; 707 case Opt_reserve_root: 708 if (args->from && match_int(args, &arg)) 709 return -EINVAL; 710 if (test_opt(sbi, RESERVE_ROOT)) { 711 f2fs_info(sbi, "Preserve previous reserve_root=%u", 712 F2FS_OPTION(sbi).root_reserved_blocks); 713 } else { 714 F2FS_OPTION(sbi).root_reserved_blocks = arg; 715 set_opt(sbi, RESERVE_ROOT); 716 } 717 break; 718 case Opt_resuid: 719 if (args->from && match_int(args, &arg)) 720 return -EINVAL; 721 uid = make_kuid(current_user_ns(), arg); 722 if (!uid_valid(uid)) { 723 f2fs_err(sbi, "Invalid uid value %d", arg); 724 return -EINVAL; 725 } 726 F2FS_OPTION(sbi).s_resuid = uid; 727 break; 728 case Opt_resgid: 729 if (args->from && match_int(args, &arg)) 730 return -EINVAL; 731 gid = make_kgid(current_user_ns(), arg); 732 if (!gid_valid(gid)) { 733 f2fs_err(sbi, "Invalid gid value %d", arg); 734 return -EINVAL; 735 } 736 F2FS_OPTION(sbi).s_resgid = gid; 737 break; 738 case Opt_mode: 739 name = match_strdup(&args[0]); 740 741 if (!name) 742 return -ENOMEM; 743 if (!strcmp(name, "adaptive")) { 744 if (f2fs_sb_has_blkzoned(sbi)) { 745 f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature"); 746 kfree(name); 747 return -EINVAL; 748 } 749 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 750 } else if (!strcmp(name, "lfs")) { 751 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 752 } else { 753 kfree(name); 754 return -EINVAL; 755 } 756 kfree(name); 757 break; 758 case Opt_io_size_bits: 759 if (args->from && match_int(args, &arg)) 760 return -EINVAL; 761 if (arg <= 0 || arg > __ilog2_u32(BIO_MAX_VECS)) { 762 f2fs_warn(sbi, "Not support %d, larger than %d", 763 1 << arg, BIO_MAX_VECS); 764 return -EINVAL; 765 } 766 F2FS_OPTION(sbi).write_io_size_bits = arg; 767 break; 768 #ifdef CONFIG_F2FS_FAULT_INJECTION 769 case Opt_fault_injection: 770 if (args->from && match_int(args, &arg)) 771 return -EINVAL; 772 f2fs_build_fault_attr(sbi, arg, F2FS_ALL_FAULT_TYPE); 773 set_opt(sbi, FAULT_INJECTION); 774 break; 775 776 case Opt_fault_type: 777 if (args->from && match_int(args, &arg)) 778 return -EINVAL; 779 f2fs_build_fault_attr(sbi, 0, arg); 780 set_opt(sbi, FAULT_INJECTION); 781 break; 782 #else 783 case Opt_fault_injection: 784 f2fs_info(sbi, "fault_injection options not supported"); 785 break; 786 787 case Opt_fault_type: 788 f2fs_info(sbi, "fault_type options not supported"); 789 break; 790 #endif 791 case Opt_lazytime: 792 sb->s_flags |= SB_LAZYTIME; 793 break; 794 case Opt_nolazytime: 795 sb->s_flags &= ~SB_LAZYTIME; 796 break; 797 #ifdef CONFIG_QUOTA 798 case Opt_quota: 799 case Opt_usrquota: 800 set_opt(sbi, USRQUOTA); 801 break; 802 case Opt_grpquota: 803 set_opt(sbi, GRPQUOTA); 804 break; 805 case Opt_prjquota: 806 set_opt(sbi, PRJQUOTA); 807 break; 808 case Opt_usrjquota: 809 ret = f2fs_set_qf_name(sb, USRQUOTA, &args[0]); 810 if (ret) 811 return ret; 812 break; 813 case Opt_grpjquota: 814 ret = f2fs_set_qf_name(sb, GRPQUOTA, &args[0]); 815 if (ret) 816 return ret; 817 break; 818 case Opt_prjjquota: 819 ret = f2fs_set_qf_name(sb, PRJQUOTA, &args[0]); 820 if (ret) 821 return ret; 822 break; 823 case Opt_offusrjquota: 824 ret = f2fs_clear_qf_name(sb, USRQUOTA); 825 if (ret) 826 return ret; 827 break; 828 case Opt_offgrpjquota: 829 ret = f2fs_clear_qf_name(sb, GRPQUOTA); 830 if (ret) 831 return ret; 832 break; 833 case Opt_offprjjquota: 834 ret = f2fs_clear_qf_name(sb, PRJQUOTA); 835 if (ret) 836 return ret; 837 break; 838 case Opt_jqfmt_vfsold: 839 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD; 840 break; 841 case Opt_jqfmt_vfsv0: 842 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0; 843 break; 844 case Opt_jqfmt_vfsv1: 845 F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1; 846 break; 847 case Opt_noquota: 848 clear_opt(sbi, QUOTA); 849 clear_opt(sbi, USRQUOTA); 850 clear_opt(sbi, GRPQUOTA); 851 clear_opt(sbi, PRJQUOTA); 852 break; 853 #else 854 case Opt_quota: 855 case Opt_usrquota: 856 case Opt_grpquota: 857 case Opt_prjquota: 858 case Opt_usrjquota: 859 case Opt_grpjquota: 860 case Opt_prjjquota: 861 case Opt_offusrjquota: 862 case Opt_offgrpjquota: 863 case Opt_offprjjquota: 864 case Opt_jqfmt_vfsold: 865 case Opt_jqfmt_vfsv0: 866 case Opt_jqfmt_vfsv1: 867 case Opt_noquota: 868 f2fs_info(sbi, "quota operations not supported"); 869 break; 870 #endif 871 case Opt_whint: 872 name = match_strdup(&args[0]); 873 if (!name) 874 return -ENOMEM; 875 if (!strcmp(name, "user-based")) { 876 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER; 877 } else if (!strcmp(name, "off")) { 878 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; 879 } else if (!strcmp(name, "fs-based")) { 880 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS; 881 } else { 882 kfree(name); 883 return -EINVAL; 884 } 885 kfree(name); 886 break; 887 case Opt_alloc: 888 name = match_strdup(&args[0]); 889 if (!name) 890 return -ENOMEM; 891 892 if (!strcmp(name, "default")) { 893 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 894 } else if (!strcmp(name, "reuse")) { 895 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 896 } else { 897 kfree(name); 898 return -EINVAL; 899 } 900 kfree(name); 901 break; 902 case Opt_fsync: 903 name = match_strdup(&args[0]); 904 if (!name) 905 return -ENOMEM; 906 if (!strcmp(name, "posix")) { 907 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 908 } else if (!strcmp(name, "strict")) { 909 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT; 910 } else if (!strcmp(name, "nobarrier")) { 911 F2FS_OPTION(sbi).fsync_mode = 912 FSYNC_MODE_NOBARRIER; 913 } else { 914 kfree(name); 915 return -EINVAL; 916 } 917 kfree(name); 918 break; 919 case Opt_test_dummy_encryption: 920 ret = f2fs_set_test_dummy_encryption(sb, p, &args[0], 921 is_remount); 922 if (ret) 923 return ret; 924 break; 925 case Opt_inlinecrypt: 926 #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT 927 sb->s_flags |= SB_INLINECRYPT; 928 #else 929 f2fs_info(sbi, "inline encryption not supported"); 930 #endif 931 break; 932 case Opt_checkpoint_disable_cap_perc: 933 if (args->from && match_int(args, &arg)) 934 return -EINVAL; 935 if (arg < 0 || arg > 100) 936 return -EINVAL; 937 F2FS_OPTION(sbi).unusable_cap_perc = arg; 938 set_opt(sbi, DISABLE_CHECKPOINT); 939 break; 940 case Opt_checkpoint_disable_cap: 941 if (args->from && match_int(args, &arg)) 942 return -EINVAL; 943 F2FS_OPTION(sbi).unusable_cap = arg; 944 set_opt(sbi, DISABLE_CHECKPOINT); 945 break; 946 case Opt_checkpoint_disable: 947 set_opt(sbi, DISABLE_CHECKPOINT); 948 break; 949 case Opt_checkpoint_enable: 950 clear_opt(sbi, DISABLE_CHECKPOINT); 951 break; 952 case Opt_checkpoint_merge: 953 set_opt(sbi, MERGE_CHECKPOINT); 954 break; 955 case Opt_nocheckpoint_merge: 956 clear_opt(sbi, MERGE_CHECKPOINT); 957 break; 958 #ifdef CONFIG_F2FS_FS_COMPRESSION 959 case Opt_compress_algorithm: 960 if (!f2fs_sb_has_compression(sbi)) { 961 f2fs_info(sbi, "Image doesn't support compression"); 962 break; 963 } 964 name = match_strdup(&args[0]); 965 if (!name) 966 return -ENOMEM; 967 if (!strcmp(name, "lzo")) { 968 #ifdef CONFIG_F2FS_FS_LZO 969 F2FS_OPTION(sbi).compress_level = 0; 970 F2FS_OPTION(sbi).compress_algorithm = 971 COMPRESS_LZO; 972 #else 973 f2fs_info(sbi, "kernel doesn't support lzo compression"); 974 #endif 975 } else if (!strncmp(name, "lz4", 3)) { 976 #ifdef CONFIG_F2FS_FS_LZ4 977 ret = f2fs_set_lz4hc_level(sbi, name); 978 if (ret) { 979 kfree(name); 980 return -EINVAL; 981 } 982 F2FS_OPTION(sbi).compress_algorithm = 983 COMPRESS_LZ4; 984 #else 985 f2fs_info(sbi, "kernel doesn't support lz4 compression"); 986 #endif 987 } else if (!strncmp(name, "zstd", 4)) { 988 #ifdef CONFIG_F2FS_FS_ZSTD 989 ret = f2fs_set_zstd_level(sbi, name); 990 if (ret) { 991 kfree(name); 992 return -EINVAL; 993 } 994 F2FS_OPTION(sbi).compress_algorithm = 995 COMPRESS_ZSTD; 996 #else 997 f2fs_info(sbi, "kernel doesn't support zstd compression"); 998 #endif 999 } else if (!strcmp(name, "lzo-rle")) { 1000 #ifdef CONFIG_F2FS_FS_LZORLE 1001 F2FS_OPTION(sbi).compress_level = 0; 1002 F2FS_OPTION(sbi).compress_algorithm = 1003 COMPRESS_LZORLE; 1004 #else 1005 f2fs_info(sbi, "kernel doesn't support lzorle compression"); 1006 #endif 1007 } else { 1008 kfree(name); 1009 return -EINVAL; 1010 } 1011 kfree(name); 1012 break; 1013 case Opt_compress_log_size: 1014 if (!f2fs_sb_has_compression(sbi)) { 1015 f2fs_info(sbi, "Image doesn't support compression"); 1016 break; 1017 } 1018 if (args->from && match_int(args, &arg)) 1019 return -EINVAL; 1020 if (arg < MIN_COMPRESS_LOG_SIZE || 1021 arg > MAX_COMPRESS_LOG_SIZE) { 1022 f2fs_err(sbi, 1023 "Compress cluster log size is out of range"); 1024 return -EINVAL; 1025 } 1026 F2FS_OPTION(sbi).compress_log_size = arg; 1027 break; 1028 case Opt_compress_extension: 1029 if (!f2fs_sb_has_compression(sbi)) { 1030 f2fs_info(sbi, "Image doesn't support compression"); 1031 break; 1032 } 1033 name = match_strdup(&args[0]); 1034 if (!name) 1035 return -ENOMEM; 1036 1037 ext = F2FS_OPTION(sbi).extensions; 1038 ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; 1039 1040 if (strlen(name) >= F2FS_EXTENSION_LEN || 1041 ext_cnt >= COMPRESS_EXT_NUM) { 1042 f2fs_err(sbi, 1043 "invalid extension length/number"); 1044 kfree(name); 1045 return -EINVAL; 1046 } 1047 1048 strcpy(ext[ext_cnt], name); 1049 F2FS_OPTION(sbi).compress_ext_cnt++; 1050 kfree(name); 1051 break; 1052 case Opt_compress_chksum: 1053 F2FS_OPTION(sbi).compress_chksum = true; 1054 break; 1055 case Opt_compress_mode: 1056 name = match_strdup(&args[0]); 1057 if (!name) 1058 return -ENOMEM; 1059 if (!strcmp(name, "fs")) { 1060 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1061 } else if (!strcmp(name, "user")) { 1062 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_USER; 1063 } else { 1064 kfree(name); 1065 return -EINVAL; 1066 } 1067 kfree(name); 1068 break; 1069 #else 1070 case Opt_compress_algorithm: 1071 case Opt_compress_log_size: 1072 case Opt_compress_extension: 1073 case Opt_compress_chksum: 1074 case Opt_compress_mode: 1075 f2fs_info(sbi, "compression options not supported"); 1076 break; 1077 #endif 1078 case Opt_atgc: 1079 set_opt(sbi, ATGC); 1080 break; 1081 case Opt_gc_merge: 1082 set_opt(sbi, GC_MERGE); 1083 break; 1084 case Opt_nogc_merge: 1085 clear_opt(sbi, GC_MERGE); 1086 break; 1087 default: 1088 f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value", 1089 p); 1090 return -EINVAL; 1091 } 1092 } 1093 #ifdef CONFIG_QUOTA 1094 if (f2fs_check_quota_options(sbi)) 1095 return -EINVAL; 1096 #else 1097 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sbi->sb)) { 1098 f2fs_info(sbi, "Filesystem with quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1099 return -EINVAL; 1100 } 1101 if (f2fs_sb_has_project_quota(sbi) && !f2fs_readonly(sbi->sb)) { 1102 f2fs_err(sbi, "Filesystem with project quota feature cannot be mounted RDWR without CONFIG_QUOTA"); 1103 return -EINVAL; 1104 } 1105 #endif 1106 #ifndef CONFIG_UNICODE 1107 if (f2fs_sb_has_casefold(sbi)) { 1108 f2fs_err(sbi, 1109 "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 1110 return -EINVAL; 1111 } 1112 #endif 1113 /* 1114 * The BLKZONED feature indicates that the drive was formatted with 1115 * zone alignment optimization. This is optional for host-aware 1116 * devices, but mandatory for host-managed zoned block devices. 1117 */ 1118 #ifndef CONFIG_BLK_DEV_ZONED 1119 if (f2fs_sb_has_blkzoned(sbi)) { 1120 f2fs_err(sbi, "Zoned block device support is not enabled"); 1121 return -EINVAL; 1122 } 1123 #endif 1124 1125 if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) { 1126 f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO", 1127 F2FS_IO_SIZE_KB(sbi)); 1128 return -EINVAL; 1129 } 1130 1131 if (test_opt(sbi, INLINE_XATTR_SIZE)) { 1132 int min_size, max_size; 1133 1134 if (!f2fs_sb_has_extra_attr(sbi) || 1135 !f2fs_sb_has_flexible_inline_xattr(sbi)) { 1136 f2fs_err(sbi, "extra_attr or flexible_inline_xattr feature is off"); 1137 return -EINVAL; 1138 } 1139 if (!test_opt(sbi, INLINE_XATTR)) { 1140 f2fs_err(sbi, "inline_xattr_size option should be set with inline_xattr option"); 1141 return -EINVAL; 1142 } 1143 1144 min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32); 1145 max_size = MAX_INLINE_XATTR_SIZE; 1146 1147 if (F2FS_OPTION(sbi).inline_xattr_size < min_size || 1148 F2FS_OPTION(sbi).inline_xattr_size > max_size) { 1149 f2fs_err(sbi, "inline xattr size is out of range: %d ~ %d", 1150 min_size, max_size); 1151 return -EINVAL; 1152 } 1153 } 1154 1155 if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) { 1156 f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n"); 1157 return -EINVAL; 1158 } 1159 1160 /* Not pass down write hints if the number of active logs is lesser 1161 * than NR_CURSEG_PERSIST_TYPE. 1162 */ 1163 if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE) 1164 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; 1165 return 0; 1166 } 1167 1168 static struct inode *f2fs_alloc_inode(struct super_block *sb) 1169 { 1170 struct f2fs_inode_info *fi; 1171 1172 fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); 1173 if (!fi) 1174 return NULL; 1175 1176 init_once((void *) fi); 1177 1178 /* Initialize f2fs-specific inode info */ 1179 atomic_set(&fi->dirty_pages, 0); 1180 atomic_set(&fi->i_compr_blocks, 0); 1181 init_rwsem(&fi->i_sem); 1182 spin_lock_init(&fi->i_size_lock); 1183 INIT_LIST_HEAD(&fi->dirty_list); 1184 INIT_LIST_HEAD(&fi->gdirty_list); 1185 INIT_LIST_HEAD(&fi->inmem_ilist); 1186 INIT_LIST_HEAD(&fi->inmem_pages); 1187 mutex_init(&fi->inmem_lock); 1188 init_rwsem(&fi->i_gc_rwsem[READ]); 1189 init_rwsem(&fi->i_gc_rwsem[WRITE]); 1190 init_rwsem(&fi->i_mmap_sem); 1191 init_rwsem(&fi->i_xattr_sem); 1192 1193 /* Will be used by directory only */ 1194 fi->i_dir_level = F2FS_SB(sb)->dir_level; 1195 1196 return &fi->vfs_inode; 1197 } 1198 1199 static int f2fs_drop_inode(struct inode *inode) 1200 { 1201 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1202 int ret; 1203 1204 /* 1205 * during filesystem shutdown, if checkpoint is disabled, 1206 * drop useless meta/node dirty pages. 1207 */ 1208 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1209 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1210 inode->i_ino == F2FS_META_INO(sbi)) { 1211 trace_f2fs_drop_inode(inode, 1); 1212 return 1; 1213 } 1214 } 1215 1216 /* 1217 * This is to avoid a deadlock condition like below. 1218 * writeback_single_inode(inode) 1219 * - f2fs_write_data_page 1220 * - f2fs_gc -> iput -> evict 1221 * - inode_wait_for_writeback(inode) 1222 */ 1223 if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { 1224 if (!inode->i_nlink && !is_bad_inode(inode)) { 1225 /* to avoid evict_inode call simultaneously */ 1226 atomic_inc(&inode->i_count); 1227 spin_unlock(&inode->i_lock); 1228 1229 /* some remained atomic pages should discarded */ 1230 if (f2fs_is_atomic_file(inode)) 1231 f2fs_drop_inmem_pages(inode); 1232 1233 /* should remain fi->extent_tree for writepage */ 1234 f2fs_destroy_extent_node(inode); 1235 1236 sb_start_intwrite(inode->i_sb); 1237 f2fs_i_size_write(inode, 0); 1238 1239 f2fs_submit_merged_write_cond(F2FS_I_SB(inode), 1240 inode, NULL, 0, DATA); 1241 truncate_inode_pages_final(inode->i_mapping); 1242 1243 if (F2FS_HAS_BLOCKS(inode)) 1244 f2fs_truncate(inode); 1245 1246 sb_end_intwrite(inode->i_sb); 1247 1248 spin_lock(&inode->i_lock); 1249 atomic_dec(&inode->i_count); 1250 } 1251 trace_f2fs_drop_inode(inode, 0); 1252 return 0; 1253 } 1254 ret = generic_drop_inode(inode); 1255 if (!ret) 1256 ret = fscrypt_drop_inode(inode); 1257 trace_f2fs_drop_inode(inode, ret); 1258 return ret; 1259 } 1260 1261 int f2fs_inode_dirtied(struct inode *inode, bool sync) 1262 { 1263 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1264 int ret = 0; 1265 1266 spin_lock(&sbi->inode_lock[DIRTY_META]); 1267 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1268 ret = 1; 1269 } else { 1270 set_inode_flag(inode, FI_DIRTY_INODE); 1271 stat_inc_dirty_inode(sbi, DIRTY_META); 1272 } 1273 if (sync && list_empty(&F2FS_I(inode)->gdirty_list)) { 1274 list_add_tail(&F2FS_I(inode)->gdirty_list, 1275 &sbi->inode_list[DIRTY_META]); 1276 inc_page_count(sbi, F2FS_DIRTY_IMETA); 1277 } 1278 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1279 return ret; 1280 } 1281 1282 void f2fs_inode_synced(struct inode *inode) 1283 { 1284 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1285 1286 spin_lock(&sbi->inode_lock[DIRTY_META]); 1287 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { 1288 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1289 return; 1290 } 1291 if (!list_empty(&F2FS_I(inode)->gdirty_list)) { 1292 list_del_init(&F2FS_I(inode)->gdirty_list); 1293 dec_page_count(sbi, F2FS_DIRTY_IMETA); 1294 } 1295 clear_inode_flag(inode, FI_DIRTY_INODE); 1296 clear_inode_flag(inode, FI_AUTO_RECOVER); 1297 stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); 1298 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1299 } 1300 1301 /* 1302 * f2fs_dirty_inode() is called from __mark_inode_dirty() 1303 * 1304 * We should call set_dirty_inode to write the dirty inode through write_inode. 1305 */ 1306 static void f2fs_dirty_inode(struct inode *inode, int flags) 1307 { 1308 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1309 1310 if (inode->i_ino == F2FS_NODE_INO(sbi) || 1311 inode->i_ino == F2FS_META_INO(sbi)) 1312 return; 1313 1314 if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) 1315 clear_inode_flag(inode, FI_AUTO_RECOVER); 1316 1317 f2fs_inode_dirtied(inode, false); 1318 } 1319 1320 static void f2fs_free_inode(struct inode *inode) 1321 { 1322 fscrypt_free_inode(inode); 1323 kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); 1324 } 1325 1326 static void destroy_percpu_info(struct f2fs_sb_info *sbi) 1327 { 1328 percpu_counter_destroy(&sbi->alloc_valid_block_count); 1329 percpu_counter_destroy(&sbi->total_valid_inode_count); 1330 } 1331 1332 static void destroy_device_list(struct f2fs_sb_info *sbi) 1333 { 1334 int i; 1335 1336 for (i = 0; i < sbi->s_ndevs; i++) { 1337 blkdev_put(FDEV(i).bdev, FMODE_EXCL); 1338 #ifdef CONFIG_BLK_DEV_ZONED 1339 kvfree(FDEV(i).blkz_seq); 1340 kfree(FDEV(i).zone_capacity_blocks); 1341 #endif 1342 } 1343 kvfree(sbi->devs); 1344 } 1345 1346 static void f2fs_put_super(struct super_block *sb) 1347 { 1348 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1349 int i; 1350 bool dropped; 1351 1352 /* unregister procfs/sysfs entries in advance to avoid race case */ 1353 f2fs_unregister_sysfs(sbi); 1354 1355 f2fs_quota_off_umount(sb); 1356 1357 /* prevent remaining shrinker jobs */ 1358 mutex_lock(&sbi->umount_mutex); 1359 1360 /* 1361 * flush all issued checkpoints and stop checkpoint issue thread. 1362 * after then, all checkpoints should be done by each process context. 1363 */ 1364 f2fs_stop_ckpt_thread(sbi); 1365 1366 /* 1367 * We don't need to do checkpoint when superblock is clean. 1368 * But, the previous checkpoint was not done by umount, it needs to do 1369 * clean checkpoint again. 1370 */ 1371 if ((is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 1372 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG))) { 1373 struct cp_control cpc = { 1374 .reason = CP_UMOUNT, 1375 }; 1376 f2fs_write_checkpoint(sbi, &cpc); 1377 } 1378 1379 /* be sure to wait for any on-going discard commands */ 1380 dropped = f2fs_issue_discard_timeout(sbi); 1381 1382 if ((f2fs_hw_support_discard(sbi) || f2fs_hw_should_discard(sbi)) && 1383 !sbi->discard_blks && !dropped) { 1384 struct cp_control cpc = { 1385 .reason = CP_UMOUNT | CP_TRIMMED, 1386 }; 1387 f2fs_write_checkpoint(sbi, &cpc); 1388 } 1389 1390 /* 1391 * normally superblock is clean, so we need to release this. 1392 * In addition, EIO will skip do checkpoint, we need this as well. 1393 */ 1394 f2fs_release_ino_entry(sbi, true); 1395 1396 f2fs_leave_shrinker(sbi); 1397 mutex_unlock(&sbi->umount_mutex); 1398 1399 /* our cp_error case, we can wait for any writeback page */ 1400 f2fs_flush_merged_writes(sbi); 1401 1402 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1403 1404 f2fs_bug_on(sbi, sbi->fsync_node_num); 1405 1406 iput(sbi->node_inode); 1407 sbi->node_inode = NULL; 1408 1409 iput(sbi->meta_inode); 1410 sbi->meta_inode = NULL; 1411 1412 /* 1413 * iput() can update stat information, if f2fs_write_checkpoint() 1414 * above failed with error. 1415 */ 1416 f2fs_destroy_stats(sbi); 1417 1418 /* destroy f2fs internal modules */ 1419 f2fs_destroy_node_manager(sbi); 1420 f2fs_destroy_segment_manager(sbi); 1421 1422 f2fs_destroy_post_read_wq(sbi); 1423 1424 kvfree(sbi->ckpt); 1425 1426 sb->s_fs_info = NULL; 1427 if (sbi->s_chksum_driver) 1428 crypto_free_shash(sbi->s_chksum_driver); 1429 kfree(sbi->raw_super); 1430 1431 destroy_device_list(sbi); 1432 f2fs_destroy_page_array_cache(sbi); 1433 f2fs_destroy_xattr_caches(sbi); 1434 mempool_destroy(sbi->write_io_dummy); 1435 #ifdef CONFIG_QUOTA 1436 for (i = 0; i < MAXQUOTAS; i++) 1437 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 1438 #endif 1439 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 1440 destroy_percpu_info(sbi); 1441 for (i = 0; i < NR_PAGE_TYPE; i++) 1442 kvfree(sbi->write_io[i]); 1443 #ifdef CONFIG_UNICODE 1444 utf8_unload(sb->s_encoding); 1445 #endif 1446 kfree(sbi); 1447 } 1448 1449 int f2fs_sync_fs(struct super_block *sb, int sync) 1450 { 1451 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1452 int err = 0; 1453 1454 if (unlikely(f2fs_cp_error(sbi))) 1455 return 0; 1456 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) 1457 return 0; 1458 1459 trace_f2fs_sync_fs(sb, sync); 1460 1461 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 1462 return -EAGAIN; 1463 1464 if (sync) 1465 err = f2fs_issue_checkpoint(sbi); 1466 1467 return err; 1468 } 1469 1470 static int f2fs_freeze(struct super_block *sb) 1471 { 1472 if (f2fs_readonly(sb)) 1473 return 0; 1474 1475 /* IO error happened before */ 1476 if (unlikely(f2fs_cp_error(F2FS_SB(sb)))) 1477 return -EIO; 1478 1479 /* must be clean, since sync_filesystem() was already called */ 1480 if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) 1481 return -EINVAL; 1482 1483 /* ensure no checkpoint required */ 1484 if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list)) 1485 return -EINVAL; 1486 return 0; 1487 } 1488 1489 static int f2fs_unfreeze(struct super_block *sb) 1490 { 1491 return 0; 1492 } 1493 1494 #ifdef CONFIG_QUOTA 1495 static int f2fs_statfs_project(struct super_block *sb, 1496 kprojid_t projid, struct kstatfs *buf) 1497 { 1498 struct kqid qid; 1499 struct dquot *dquot; 1500 u64 limit; 1501 u64 curblock; 1502 1503 qid = make_kqid_projid(projid); 1504 dquot = dqget(sb, qid); 1505 if (IS_ERR(dquot)) 1506 return PTR_ERR(dquot); 1507 spin_lock(&dquot->dq_dqb_lock); 1508 1509 limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, 1510 dquot->dq_dqb.dqb_bhardlimit); 1511 if (limit) 1512 limit >>= sb->s_blocksize_bits; 1513 1514 if (limit && buf->f_blocks > limit) { 1515 curblock = (dquot->dq_dqb.dqb_curspace + 1516 dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; 1517 buf->f_blocks = limit; 1518 buf->f_bfree = buf->f_bavail = 1519 (buf->f_blocks > curblock) ? 1520 (buf->f_blocks - curblock) : 0; 1521 } 1522 1523 limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, 1524 dquot->dq_dqb.dqb_ihardlimit); 1525 1526 if (limit && buf->f_files > limit) { 1527 buf->f_files = limit; 1528 buf->f_ffree = 1529 (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? 1530 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; 1531 } 1532 1533 spin_unlock(&dquot->dq_dqb_lock); 1534 dqput(dquot); 1535 return 0; 1536 } 1537 #endif 1538 1539 static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) 1540 { 1541 struct super_block *sb = dentry->d_sb; 1542 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1543 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 1544 block_t total_count, user_block_count, start_count; 1545 u64 avail_node_count; 1546 1547 total_count = le64_to_cpu(sbi->raw_super->block_count); 1548 user_block_count = sbi->user_block_count; 1549 start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); 1550 buf->f_type = F2FS_SUPER_MAGIC; 1551 buf->f_bsize = sbi->blocksize; 1552 1553 buf->f_blocks = total_count - start_count; 1554 buf->f_bfree = user_block_count - valid_user_blocks(sbi) - 1555 sbi->current_reserved_blocks; 1556 1557 spin_lock(&sbi->stat_lock); 1558 if (unlikely(buf->f_bfree <= sbi->unusable_block_count)) 1559 buf->f_bfree = 0; 1560 else 1561 buf->f_bfree -= sbi->unusable_block_count; 1562 spin_unlock(&sbi->stat_lock); 1563 1564 if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks) 1565 buf->f_bavail = buf->f_bfree - 1566 F2FS_OPTION(sbi).root_reserved_blocks; 1567 else 1568 buf->f_bavail = 0; 1569 1570 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 1571 1572 if (avail_node_count > user_block_count) { 1573 buf->f_files = user_block_count; 1574 buf->f_ffree = buf->f_bavail; 1575 } else { 1576 buf->f_files = avail_node_count; 1577 buf->f_ffree = min(avail_node_count - valid_node_count(sbi), 1578 buf->f_bavail); 1579 } 1580 1581 buf->f_namelen = F2FS_NAME_LEN; 1582 buf->f_fsid = u64_to_fsid(id); 1583 1584 #ifdef CONFIG_QUOTA 1585 if (is_inode_flag_set(dentry->d_inode, FI_PROJ_INHERIT) && 1586 sb_has_quota_limits_enabled(sb, PRJQUOTA)) { 1587 f2fs_statfs_project(sb, F2FS_I(dentry->d_inode)->i_projid, buf); 1588 } 1589 #endif 1590 return 0; 1591 } 1592 1593 static inline void f2fs_show_quota_options(struct seq_file *seq, 1594 struct super_block *sb) 1595 { 1596 #ifdef CONFIG_QUOTA 1597 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1598 1599 if (F2FS_OPTION(sbi).s_jquota_fmt) { 1600 char *fmtname = ""; 1601 1602 switch (F2FS_OPTION(sbi).s_jquota_fmt) { 1603 case QFMT_VFS_OLD: 1604 fmtname = "vfsold"; 1605 break; 1606 case QFMT_VFS_V0: 1607 fmtname = "vfsv0"; 1608 break; 1609 case QFMT_VFS_V1: 1610 fmtname = "vfsv1"; 1611 break; 1612 } 1613 seq_printf(seq, ",jqfmt=%s", fmtname); 1614 } 1615 1616 if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA]) 1617 seq_show_option(seq, "usrjquota", 1618 F2FS_OPTION(sbi).s_qf_names[USRQUOTA]); 1619 1620 if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]) 1621 seq_show_option(seq, "grpjquota", 1622 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]); 1623 1624 if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) 1625 seq_show_option(seq, "prjjquota", 1626 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]); 1627 #endif 1628 } 1629 1630 #ifdef CONFIG_F2FS_FS_COMPRESSION 1631 static inline void f2fs_show_compress_options(struct seq_file *seq, 1632 struct super_block *sb) 1633 { 1634 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1635 char *algtype = ""; 1636 int i; 1637 1638 if (!f2fs_sb_has_compression(sbi)) 1639 return; 1640 1641 switch (F2FS_OPTION(sbi).compress_algorithm) { 1642 case COMPRESS_LZO: 1643 algtype = "lzo"; 1644 break; 1645 case COMPRESS_LZ4: 1646 algtype = "lz4"; 1647 break; 1648 case COMPRESS_ZSTD: 1649 algtype = "zstd"; 1650 break; 1651 case COMPRESS_LZORLE: 1652 algtype = "lzo-rle"; 1653 break; 1654 } 1655 seq_printf(seq, ",compress_algorithm=%s", algtype); 1656 1657 if (F2FS_OPTION(sbi).compress_level) 1658 seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level); 1659 1660 seq_printf(seq, ",compress_log_size=%u", 1661 F2FS_OPTION(sbi).compress_log_size); 1662 1663 for (i = 0; i < F2FS_OPTION(sbi).compress_ext_cnt; i++) { 1664 seq_printf(seq, ",compress_extension=%s", 1665 F2FS_OPTION(sbi).extensions[i]); 1666 } 1667 1668 if (F2FS_OPTION(sbi).compress_chksum) 1669 seq_puts(seq, ",compress_chksum"); 1670 1671 if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_FS) 1672 seq_printf(seq, ",compress_mode=%s", "fs"); 1673 else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER) 1674 seq_printf(seq, ",compress_mode=%s", "user"); 1675 } 1676 #endif 1677 1678 static int f2fs_show_options(struct seq_file *seq, struct dentry *root) 1679 { 1680 struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); 1681 1682 if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) 1683 seq_printf(seq, ",background_gc=%s", "sync"); 1684 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_ON) 1685 seq_printf(seq, ",background_gc=%s", "on"); 1686 else if (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF) 1687 seq_printf(seq, ",background_gc=%s", "off"); 1688 1689 if (test_opt(sbi, GC_MERGE)) 1690 seq_puts(seq, ",gc_merge"); 1691 1692 if (test_opt(sbi, DISABLE_ROLL_FORWARD)) 1693 seq_puts(seq, ",disable_roll_forward"); 1694 if (test_opt(sbi, NORECOVERY)) 1695 seq_puts(seq, ",norecovery"); 1696 if (test_opt(sbi, DISCARD)) 1697 seq_puts(seq, ",discard"); 1698 else 1699 seq_puts(seq, ",nodiscard"); 1700 if (test_opt(sbi, NOHEAP)) 1701 seq_puts(seq, ",no_heap"); 1702 else 1703 seq_puts(seq, ",heap"); 1704 #ifdef CONFIG_F2FS_FS_XATTR 1705 if (test_opt(sbi, XATTR_USER)) 1706 seq_puts(seq, ",user_xattr"); 1707 else 1708 seq_puts(seq, ",nouser_xattr"); 1709 if (test_opt(sbi, INLINE_XATTR)) 1710 seq_puts(seq, ",inline_xattr"); 1711 else 1712 seq_puts(seq, ",noinline_xattr"); 1713 if (test_opt(sbi, INLINE_XATTR_SIZE)) 1714 seq_printf(seq, ",inline_xattr_size=%u", 1715 F2FS_OPTION(sbi).inline_xattr_size); 1716 #endif 1717 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1718 if (test_opt(sbi, POSIX_ACL)) 1719 seq_puts(seq, ",acl"); 1720 else 1721 seq_puts(seq, ",noacl"); 1722 #endif 1723 if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) 1724 seq_puts(seq, ",disable_ext_identify"); 1725 if (test_opt(sbi, INLINE_DATA)) 1726 seq_puts(seq, ",inline_data"); 1727 else 1728 seq_puts(seq, ",noinline_data"); 1729 if (test_opt(sbi, INLINE_DENTRY)) 1730 seq_puts(seq, ",inline_dentry"); 1731 else 1732 seq_puts(seq, ",noinline_dentry"); 1733 if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) 1734 seq_puts(seq, ",flush_merge"); 1735 if (test_opt(sbi, NOBARRIER)) 1736 seq_puts(seq, ",nobarrier"); 1737 if (test_opt(sbi, FASTBOOT)) 1738 seq_puts(seq, ",fastboot"); 1739 if (test_opt(sbi, EXTENT_CACHE)) 1740 seq_puts(seq, ",extent_cache"); 1741 else 1742 seq_puts(seq, ",noextent_cache"); 1743 if (test_opt(sbi, DATA_FLUSH)) 1744 seq_puts(seq, ",data_flush"); 1745 1746 seq_puts(seq, ",mode="); 1747 if (F2FS_OPTION(sbi).fs_mode == FS_MODE_ADAPTIVE) 1748 seq_puts(seq, "adaptive"); 1749 else if (F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS) 1750 seq_puts(seq, "lfs"); 1751 seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs); 1752 if (test_opt(sbi, RESERVE_ROOT)) 1753 seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u", 1754 F2FS_OPTION(sbi).root_reserved_blocks, 1755 from_kuid_munged(&init_user_ns, 1756 F2FS_OPTION(sbi).s_resuid), 1757 from_kgid_munged(&init_user_ns, 1758 F2FS_OPTION(sbi).s_resgid)); 1759 if (F2FS_IO_SIZE_BITS(sbi)) 1760 seq_printf(seq, ",io_bits=%u", 1761 F2FS_OPTION(sbi).write_io_size_bits); 1762 #ifdef CONFIG_F2FS_FAULT_INJECTION 1763 if (test_opt(sbi, FAULT_INJECTION)) { 1764 seq_printf(seq, ",fault_injection=%u", 1765 F2FS_OPTION(sbi).fault_info.inject_rate); 1766 seq_printf(seq, ",fault_type=%u", 1767 F2FS_OPTION(sbi).fault_info.inject_type); 1768 } 1769 #endif 1770 #ifdef CONFIG_QUOTA 1771 if (test_opt(sbi, QUOTA)) 1772 seq_puts(seq, ",quota"); 1773 if (test_opt(sbi, USRQUOTA)) 1774 seq_puts(seq, ",usrquota"); 1775 if (test_opt(sbi, GRPQUOTA)) 1776 seq_puts(seq, ",grpquota"); 1777 if (test_opt(sbi, PRJQUOTA)) 1778 seq_puts(seq, ",prjquota"); 1779 #endif 1780 f2fs_show_quota_options(seq, sbi->sb); 1781 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) 1782 seq_printf(seq, ",whint_mode=%s", "user-based"); 1783 else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) 1784 seq_printf(seq, ",whint_mode=%s", "fs-based"); 1785 1786 fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb); 1787 1788 if (sbi->sb->s_flags & SB_INLINECRYPT) 1789 seq_puts(seq, ",inlinecrypt"); 1790 1791 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT) 1792 seq_printf(seq, ",alloc_mode=%s", "default"); 1793 else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) 1794 seq_printf(seq, ",alloc_mode=%s", "reuse"); 1795 1796 if (test_opt(sbi, DISABLE_CHECKPOINT)) 1797 seq_printf(seq, ",checkpoint=disable:%u", 1798 F2FS_OPTION(sbi).unusable_cap); 1799 if (test_opt(sbi, MERGE_CHECKPOINT)) 1800 seq_puts(seq, ",checkpoint_merge"); 1801 else 1802 seq_puts(seq, ",nocheckpoint_merge"); 1803 if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX) 1804 seq_printf(seq, ",fsync_mode=%s", "posix"); 1805 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) 1806 seq_printf(seq, ",fsync_mode=%s", "strict"); 1807 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) 1808 seq_printf(seq, ",fsync_mode=%s", "nobarrier"); 1809 1810 #ifdef CONFIG_F2FS_FS_COMPRESSION 1811 f2fs_show_compress_options(seq, sbi->sb); 1812 #endif 1813 1814 if (test_opt(sbi, ATGC)) 1815 seq_puts(seq, ",atgc"); 1816 return 0; 1817 } 1818 1819 static void default_options(struct f2fs_sb_info *sbi) 1820 { 1821 /* init some FS parameters */ 1822 F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE; 1823 F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 1824 F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF; 1825 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT; 1826 F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX; 1827 F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID); 1828 F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID); 1829 F2FS_OPTION(sbi).compress_algorithm = COMPRESS_LZ4; 1830 F2FS_OPTION(sbi).compress_log_size = MIN_COMPRESS_LOG_SIZE; 1831 F2FS_OPTION(sbi).compress_ext_cnt = 0; 1832 F2FS_OPTION(sbi).compress_mode = COMPR_MODE_FS; 1833 F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; 1834 1835 sbi->sb->s_flags &= ~SB_INLINECRYPT; 1836 1837 set_opt(sbi, INLINE_XATTR); 1838 set_opt(sbi, INLINE_DATA); 1839 set_opt(sbi, INLINE_DENTRY); 1840 set_opt(sbi, EXTENT_CACHE); 1841 set_opt(sbi, NOHEAP); 1842 clear_opt(sbi, DISABLE_CHECKPOINT); 1843 set_opt(sbi, MERGE_CHECKPOINT); 1844 F2FS_OPTION(sbi).unusable_cap = 0; 1845 sbi->sb->s_flags |= SB_LAZYTIME; 1846 set_opt(sbi, FLUSH_MERGE); 1847 set_opt(sbi, DISCARD); 1848 if (f2fs_sb_has_blkzoned(sbi)) 1849 F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; 1850 else 1851 F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; 1852 1853 #ifdef CONFIG_F2FS_FS_XATTR 1854 set_opt(sbi, XATTR_USER); 1855 #endif 1856 #ifdef CONFIG_F2FS_FS_POSIX_ACL 1857 set_opt(sbi, POSIX_ACL); 1858 #endif 1859 1860 f2fs_build_fault_attr(sbi, 0, 0); 1861 } 1862 1863 #ifdef CONFIG_QUOTA 1864 static int f2fs_enable_quotas(struct super_block *sb); 1865 #endif 1866 1867 static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) 1868 { 1869 unsigned int s_flags = sbi->sb->s_flags; 1870 struct cp_control cpc; 1871 int err = 0; 1872 int ret; 1873 block_t unusable; 1874 1875 if (s_flags & SB_RDONLY) { 1876 f2fs_err(sbi, "checkpoint=disable on readonly fs"); 1877 return -EINVAL; 1878 } 1879 sbi->sb->s_flags |= SB_ACTIVE; 1880 1881 f2fs_update_time(sbi, DISABLE_TIME); 1882 1883 while (!f2fs_time_over(sbi, DISABLE_TIME)) { 1884 down_write(&sbi->gc_lock); 1885 err = f2fs_gc(sbi, true, false, false, NULL_SEGNO); 1886 if (err == -ENODATA) { 1887 err = 0; 1888 break; 1889 } 1890 if (err && err != -EAGAIN) 1891 break; 1892 } 1893 1894 ret = sync_filesystem(sbi->sb); 1895 if (ret || err) { 1896 err = ret ? ret : err; 1897 goto restore_flag; 1898 } 1899 1900 unusable = f2fs_get_unusable_blocks(sbi); 1901 if (f2fs_disable_cp_again(sbi, unusable)) { 1902 err = -EAGAIN; 1903 goto restore_flag; 1904 } 1905 1906 down_write(&sbi->gc_lock); 1907 cpc.reason = CP_PAUSE; 1908 set_sbi_flag(sbi, SBI_CP_DISABLED); 1909 err = f2fs_write_checkpoint(sbi, &cpc); 1910 if (err) 1911 goto out_unlock; 1912 1913 spin_lock(&sbi->stat_lock); 1914 sbi->unusable_block_count = unusable; 1915 spin_unlock(&sbi->stat_lock); 1916 1917 out_unlock: 1918 up_write(&sbi->gc_lock); 1919 restore_flag: 1920 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 1921 return err; 1922 } 1923 1924 static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) 1925 { 1926 /* we should flush all the data to keep data consistency */ 1927 sync_inodes_sb(sbi->sb); 1928 1929 down_write(&sbi->gc_lock); 1930 f2fs_dirty_to_prefree(sbi); 1931 1932 clear_sbi_flag(sbi, SBI_CP_DISABLED); 1933 set_sbi_flag(sbi, SBI_IS_DIRTY); 1934 up_write(&sbi->gc_lock); 1935 1936 f2fs_sync_fs(sbi->sb, 1); 1937 } 1938 1939 static int f2fs_remount(struct super_block *sb, int *flags, char *data) 1940 { 1941 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1942 struct f2fs_mount_info org_mount_opt; 1943 unsigned long old_sb_flags; 1944 int err; 1945 bool need_restart_gc = false, need_stop_gc = false; 1946 bool need_restart_ckpt = false, need_stop_ckpt = false; 1947 bool need_restart_flush = false, need_stop_flush = false; 1948 bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); 1949 bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT); 1950 bool no_io_align = !F2FS_IO_ALIGNED(sbi); 1951 bool no_atgc = !test_opt(sbi, ATGC); 1952 bool checkpoint_changed; 1953 #ifdef CONFIG_QUOTA 1954 int i, j; 1955 #endif 1956 1957 /* 1958 * Save the old mount options in case we 1959 * need to restore them. 1960 */ 1961 org_mount_opt = sbi->mount_opt; 1962 old_sb_flags = sb->s_flags; 1963 1964 #ifdef CONFIG_QUOTA 1965 org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt; 1966 for (i = 0; i < MAXQUOTAS; i++) { 1967 if (F2FS_OPTION(sbi).s_qf_names[i]) { 1968 org_mount_opt.s_qf_names[i] = 1969 kstrdup(F2FS_OPTION(sbi).s_qf_names[i], 1970 GFP_KERNEL); 1971 if (!org_mount_opt.s_qf_names[i]) { 1972 for (j = 0; j < i; j++) 1973 kfree(org_mount_opt.s_qf_names[j]); 1974 return -ENOMEM; 1975 } 1976 } else { 1977 org_mount_opt.s_qf_names[i] = NULL; 1978 } 1979 } 1980 #endif 1981 1982 /* recover superblocks we couldn't write due to previous RO mount */ 1983 if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { 1984 err = f2fs_commit_super(sbi, false); 1985 f2fs_info(sbi, "Try to recover all the superblocks, ret: %d", 1986 err); 1987 if (!err) 1988 clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); 1989 } 1990 1991 default_options(sbi); 1992 1993 /* parse mount options */ 1994 err = parse_options(sb, data, true); 1995 if (err) 1996 goto restore_opts; 1997 checkpoint_changed = 1998 disable_checkpoint != test_opt(sbi, DISABLE_CHECKPOINT); 1999 2000 /* 2001 * Previous and new state of filesystem is RO, 2002 * so skip checking GC and FLUSH_MERGE conditions. 2003 */ 2004 if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) 2005 goto skip; 2006 2007 #ifdef CONFIG_QUOTA 2008 if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) { 2009 err = dquot_suspend(sb, -1); 2010 if (err < 0) 2011 goto restore_opts; 2012 } else if (f2fs_readonly(sb) && !(*flags & SB_RDONLY)) { 2013 /* dquot_resume needs RW */ 2014 sb->s_flags &= ~SB_RDONLY; 2015 if (sb_any_quota_suspended(sb)) { 2016 dquot_resume(sb, -1); 2017 } else if (f2fs_sb_has_quota_ino(sbi)) { 2018 err = f2fs_enable_quotas(sb); 2019 if (err) 2020 goto restore_opts; 2021 } 2022 } 2023 #endif 2024 /* disallow enable atgc dynamically */ 2025 if (no_atgc == !!test_opt(sbi, ATGC)) { 2026 err = -EINVAL; 2027 f2fs_warn(sbi, "switch atgc option is not allowed"); 2028 goto restore_opts; 2029 } 2030 2031 /* disallow enable/disable extent_cache dynamically */ 2032 if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { 2033 err = -EINVAL; 2034 f2fs_warn(sbi, "switch extent_cache option is not allowed"); 2035 goto restore_opts; 2036 } 2037 2038 if (no_io_align == !!F2FS_IO_ALIGNED(sbi)) { 2039 err = -EINVAL; 2040 f2fs_warn(sbi, "switch io_bits option is not allowed"); 2041 goto restore_opts; 2042 } 2043 2044 if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) { 2045 err = -EINVAL; 2046 f2fs_warn(sbi, "disabling checkpoint not compatible with read-only"); 2047 goto restore_opts; 2048 } 2049 2050 /* 2051 * We stop the GC thread if FS is mounted as RO 2052 * or if background_gc = off is passed in mount 2053 * option. Also sync the filesystem. 2054 */ 2055 if ((*flags & SB_RDONLY) || 2056 (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_OFF && 2057 !test_opt(sbi, GC_MERGE))) { 2058 if (sbi->gc_thread) { 2059 f2fs_stop_gc_thread(sbi); 2060 need_restart_gc = true; 2061 } 2062 } else if (!sbi->gc_thread) { 2063 err = f2fs_start_gc_thread(sbi); 2064 if (err) 2065 goto restore_opts; 2066 need_stop_gc = true; 2067 } 2068 2069 if (*flags & SB_RDONLY || 2070 F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) { 2071 sync_inodes_sb(sb); 2072 2073 set_sbi_flag(sbi, SBI_IS_DIRTY); 2074 set_sbi_flag(sbi, SBI_IS_CLOSE); 2075 f2fs_sync_fs(sb, 1); 2076 clear_sbi_flag(sbi, SBI_IS_CLOSE); 2077 } 2078 2079 if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) || 2080 !test_opt(sbi, MERGE_CHECKPOINT)) { 2081 f2fs_stop_ckpt_thread(sbi); 2082 need_restart_ckpt = true; 2083 } else { 2084 err = f2fs_start_ckpt_thread(sbi); 2085 if (err) { 2086 f2fs_err(sbi, 2087 "Failed to start F2FS issue_checkpoint_thread (%d)", 2088 err); 2089 goto restore_gc; 2090 } 2091 need_stop_ckpt = true; 2092 } 2093 2094 /* 2095 * We stop issue flush thread if FS is mounted as RO 2096 * or if flush_merge is not passed in mount option. 2097 */ 2098 if ((*flags & SB_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { 2099 clear_opt(sbi, FLUSH_MERGE); 2100 f2fs_destroy_flush_cmd_control(sbi, false); 2101 need_restart_flush = true; 2102 } else { 2103 err = f2fs_create_flush_cmd_control(sbi); 2104 if (err) 2105 goto restore_ckpt; 2106 need_stop_flush = true; 2107 } 2108 2109 if (checkpoint_changed) { 2110 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 2111 err = f2fs_disable_checkpoint(sbi); 2112 if (err) 2113 goto restore_flush; 2114 } else { 2115 f2fs_enable_checkpoint(sbi); 2116 } 2117 } 2118 2119 skip: 2120 #ifdef CONFIG_QUOTA 2121 /* Release old quota file names */ 2122 for (i = 0; i < MAXQUOTAS; i++) 2123 kfree(org_mount_opt.s_qf_names[i]); 2124 #endif 2125 /* Update the POSIXACL Flag */ 2126 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 2127 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 2128 2129 limit_reserve_root(sbi); 2130 adjust_unusable_cap_perc(sbi); 2131 *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME); 2132 return 0; 2133 restore_flush: 2134 if (need_restart_flush) { 2135 if (f2fs_create_flush_cmd_control(sbi)) 2136 f2fs_warn(sbi, "background flush thread has stopped"); 2137 } else if (need_stop_flush) { 2138 clear_opt(sbi, FLUSH_MERGE); 2139 f2fs_destroy_flush_cmd_control(sbi, false); 2140 } 2141 restore_ckpt: 2142 if (need_restart_ckpt) { 2143 if (f2fs_start_ckpt_thread(sbi)) 2144 f2fs_warn(sbi, "background ckpt thread has stopped"); 2145 } else if (need_stop_ckpt) { 2146 f2fs_stop_ckpt_thread(sbi); 2147 } 2148 restore_gc: 2149 if (need_restart_gc) { 2150 if (f2fs_start_gc_thread(sbi)) 2151 f2fs_warn(sbi, "background gc thread has stopped"); 2152 } else if (need_stop_gc) { 2153 f2fs_stop_gc_thread(sbi); 2154 } 2155 restore_opts: 2156 #ifdef CONFIG_QUOTA 2157 F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt; 2158 for (i = 0; i < MAXQUOTAS; i++) { 2159 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 2160 F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i]; 2161 } 2162 #endif 2163 sbi->mount_opt = org_mount_opt; 2164 sb->s_flags = old_sb_flags; 2165 return err; 2166 } 2167 2168 #ifdef CONFIG_QUOTA 2169 /* Read data from quotafile */ 2170 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2171 size_t len, loff_t off) 2172 { 2173 struct inode *inode = sb_dqopt(sb)->files[type]; 2174 struct address_space *mapping = inode->i_mapping; 2175 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2176 int offset = off & (sb->s_blocksize - 1); 2177 int tocopy; 2178 size_t toread; 2179 loff_t i_size = i_size_read(inode); 2180 struct page *page; 2181 char *kaddr; 2182 2183 if (off > i_size) 2184 return 0; 2185 2186 if (off + len > i_size) 2187 len = i_size - off; 2188 toread = len; 2189 while (toread > 0) { 2190 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2191 repeat: 2192 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2193 if (IS_ERR(page)) { 2194 if (PTR_ERR(page) == -ENOMEM) { 2195 congestion_wait(BLK_RW_ASYNC, 2196 DEFAULT_IO_TIMEOUT); 2197 goto repeat; 2198 } 2199 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2200 return PTR_ERR(page); 2201 } 2202 2203 lock_page(page); 2204 2205 if (unlikely(page->mapping != mapping)) { 2206 f2fs_put_page(page, 1); 2207 goto repeat; 2208 } 2209 if (unlikely(!PageUptodate(page))) { 2210 f2fs_put_page(page, 1); 2211 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2212 return -EIO; 2213 } 2214 2215 kaddr = kmap_atomic(page); 2216 memcpy(data, kaddr + offset, tocopy); 2217 kunmap_atomic(kaddr); 2218 f2fs_put_page(page, 1); 2219 2220 offset = 0; 2221 toread -= tocopy; 2222 data += tocopy; 2223 blkidx++; 2224 } 2225 return len; 2226 } 2227 2228 /* Write to quotafile */ 2229 static ssize_t f2fs_quota_write(struct super_block *sb, int type, 2230 const char *data, size_t len, loff_t off) 2231 { 2232 struct inode *inode = sb_dqopt(sb)->files[type]; 2233 struct address_space *mapping = inode->i_mapping; 2234 const struct address_space_operations *a_ops = mapping->a_ops; 2235 int offset = off & (sb->s_blocksize - 1); 2236 size_t towrite = len; 2237 struct page *page; 2238 void *fsdata = NULL; 2239 char *kaddr; 2240 int err = 0; 2241 int tocopy; 2242 2243 while (towrite > 0) { 2244 tocopy = min_t(unsigned long, sb->s_blocksize - offset, 2245 towrite); 2246 retry: 2247 err = a_ops->write_begin(NULL, mapping, off, tocopy, 0, 2248 &page, &fsdata); 2249 if (unlikely(err)) { 2250 if (err == -ENOMEM) { 2251 congestion_wait(BLK_RW_ASYNC, 2252 DEFAULT_IO_TIMEOUT); 2253 goto retry; 2254 } 2255 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2256 break; 2257 } 2258 2259 kaddr = kmap_atomic(page); 2260 memcpy(kaddr + offset, data, tocopy); 2261 kunmap_atomic(kaddr); 2262 flush_dcache_page(page); 2263 2264 a_ops->write_end(NULL, mapping, off, tocopy, tocopy, 2265 page, fsdata); 2266 offset = 0; 2267 towrite -= tocopy; 2268 off += tocopy; 2269 data += tocopy; 2270 cond_resched(); 2271 } 2272 2273 if (len == towrite) 2274 return err; 2275 inode->i_mtime = inode->i_ctime = current_time(inode); 2276 f2fs_mark_inode_dirty_sync(inode, false); 2277 return len - towrite; 2278 } 2279 2280 static struct dquot **f2fs_get_dquots(struct inode *inode) 2281 { 2282 return F2FS_I(inode)->i_dquot; 2283 } 2284 2285 static qsize_t *f2fs_get_reserved_space(struct inode *inode) 2286 { 2287 return &F2FS_I(inode)->i_reserved_quota; 2288 } 2289 2290 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type) 2291 { 2292 if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) { 2293 f2fs_err(sbi, "quota sysfile may be corrupted, skip loading it"); 2294 return 0; 2295 } 2296 2297 return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type], 2298 F2FS_OPTION(sbi).s_jquota_fmt, type); 2299 } 2300 2301 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly) 2302 { 2303 int enabled = 0; 2304 int i, err; 2305 2306 if (f2fs_sb_has_quota_ino(sbi) && rdonly) { 2307 err = f2fs_enable_quotas(sbi->sb); 2308 if (err) { 2309 f2fs_err(sbi, "Cannot turn on quota_ino: %d", err); 2310 return 0; 2311 } 2312 return 1; 2313 } 2314 2315 for (i = 0; i < MAXQUOTAS; i++) { 2316 if (F2FS_OPTION(sbi).s_qf_names[i]) { 2317 err = f2fs_quota_on_mount(sbi, i); 2318 if (!err) { 2319 enabled = 1; 2320 continue; 2321 } 2322 f2fs_err(sbi, "Cannot turn on quotas: %d on %d", 2323 err, i); 2324 } 2325 } 2326 return enabled; 2327 } 2328 2329 static int f2fs_quota_enable(struct super_block *sb, int type, int format_id, 2330 unsigned int flags) 2331 { 2332 struct inode *qf_inode; 2333 unsigned long qf_inum; 2334 int err; 2335 2336 BUG_ON(!f2fs_sb_has_quota_ino(F2FS_SB(sb))); 2337 2338 qf_inum = f2fs_qf_ino(sb, type); 2339 if (!qf_inum) 2340 return -EPERM; 2341 2342 qf_inode = f2fs_iget(sb, qf_inum); 2343 if (IS_ERR(qf_inode)) { 2344 f2fs_err(F2FS_SB(sb), "Bad quota inode %u:%lu", type, qf_inum); 2345 return PTR_ERR(qf_inode); 2346 } 2347 2348 /* Don't account quota for quota files to avoid recursion */ 2349 qf_inode->i_flags |= S_NOQUOTA; 2350 err = dquot_load_quota_inode(qf_inode, type, format_id, flags); 2351 iput(qf_inode); 2352 return err; 2353 } 2354 2355 static int f2fs_enable_quotas(struct super_block *sb) 2356 { 2357 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2358 int type, err = 0; 2359 unsigned long qf_inum; 2360 bool quota_mopt[MAXQUOTAS] = { 2361 test_opt(sbi, USRQUOTA), 2362 test_opt(sbi, GRPQUOTA), 2363 test_opt(sbi, PRJQUOTA), 2364 }; 2365 2366 if (is_set_ckpt_flags(F2FS_SB(sb), CP_QUOTA_NEED_FSCK_FLAG)) { 2367 f2fs_err(sbi, "quota file may be corrupted, skip loading it"); 2368 return 0; 2369 } 2370 2371 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; 2372 2373 for (type = 0; type < MAXQUOTAS; type++) { 2374 qf_inum = f2fs_qf_ino(sb, type); 2375 if (qf_inum) { 2376 err = f2fs_quota_enable(sb, type, QFMT_VFS_V1, 2377 DQUOT_USAGE_ENABLED | 2378 (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); 2379 if (err) { 2380 f2fs_err(sbi, "Failed to enable quota tracking (type=%d, err=%d). Please run fsck to fix.", 2381 type, err); 2382 for (type--; type >= 0; type--) 2383 dquot_quota_off(sb, type); 2384 set_sbi_flag(F2FS_SB(sb), 2385 SBI_QUOTA_NEED_REPAIR); 2386 return err; 2387 } 2388 } 2389 } 2390 return 0; 2391 } 2392 2393 int f2fs_quota_sync(struct super_block *sb, int type) 2394 { 2395 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2396 struct quota_info *dqopt = sb_dqopt(sb); 2397 int cnt; 2398 int ret; 2399 2400 /* 2401 * do_quotactl 2402 * f2fs_quota_sync 2403 * down_read(quota_sem) 2404 * dquot_writeback_dquots() 2405 * f2fs_dquot_commit 2406 * block_operation 2407 * down_read(quota_sem) 2408 */ 2409 f2fs_lock_op(sbi); 2410 2411 down_read(&sbi->quota_sem); 2412 ret = dquot_writeback_dquots(sb, type); 2413 if (ret) 2414 goto out; 2415 2416 /* 2417 * Now when everything is written we can discard the pagecache so 2418 * that userspace sees the changes. 2419 */ 2420 for (cnt = 0; cnt < MAXQUOTAS; cnt++) { 2421 struct address_space *mapping; 2422 2423 if (type != -1 && cnt != type) 2424 continue; 2425 if (!sb_has_quota_active(sb, cnt)) 2426 continue; 2427 2428 mapping = dqopt->files[cnt]->i_mapping; 2429 2430 ret = filemap_fdatawrite(mapping); 2431 if (ret) 2432 goto out; 2433 2434 /* if we are using journalled quota */ 2435 if (is_journalled_quota(sbi)) 2436 continue; 2437 2438 ret = filemap_fdatawait(mapping); 2439 if (ret) 2440 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2441 2442 inode_lock(dqopt->files[cnt]); 2443 truncate_inode_pages(&dqopt->files[cnt]->i_data, 0); 2444 inode_unlock(dqopt->files[cnt]); 2445 } 2446 out: 2447 if (ret) 2448 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2449 up_read(&sbi->quota_sem); 2450 f2fs_unlock_op(sbi); 2451 return ret; 2452 } 2453 2454 static int f2fs_quota_on(struct super_block *sb, int type, int format_id, 2455 const struct path *path) 2456 { 2457 struct inode *inode; 2458 int err; 2459 2460 /* if quota sysfile exists, deny enabling quota with specific file */ 2461 if (f2fs_sb_has_quota_ino(F2FS_SB(sb))) { 2462 f2fs_err(F2FS_SB(sb), "quota sysfile already exists"); 2463 return -EBUSY; 2464 } 2465 2466 err = f2fs_quota_sync(sb, type); 2467 if (err) 2468 return err; 2469 2470 err = dquot_quota_on(sb, type, format_id, path); 2471 if (err) 2472 return err; 2473 2474 inode = d_inode(path->dentry); 2475 2476 inode_lock(inode); 2477 F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL; 2478 f2fs_set_inode_flags(inode); 2479 inode_unlock(inode); 2480 f2fs_mark_inode_dirty_sync(inode, false); 2481 2482 return 0; 2483 } 2484 2485 static int __f2fs_quota_off(struct super_block *sb, int type) 2486 { 2487 struct inode *inode = sb_dqopt(sb)->files[type]; 2488 int err; 2489 2490 if (!inode || !igrab(inode)) 2491 return dquot_quota_off(sb, type); 2492 2493 err = f2fs_quota_sync(sb, type); 2494 if (err) 2495 goto out_put; 2496 2497 err = dquot_quota_off(sb, type); 2498 if (err || f2fs_sb_has_quota_ino(F2FS_SB(sb))) 2499 goto out_put; 2500 2501 inode_lock(inode); 2502 F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL); 2503 f2fs_set_inode_flags(inode); 2504 inode_unlock(inode); 2505 f2fs_mark_inode_dirty_sync(inode, false); 2506 out_put: 2507 iput(inode); 2508 return err; 2509 } 2510 2511 static int f2fs_quota_off(struct super_block *sb, int type) 2512 { 2513 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2514 int err; 2515 2516 err = __f2fs_quota_off(sb, type); 2517 2518 /* 2519 * quotactl can shutdown journalled quota, result in inconsistence 2520 * between quota record and fs data by following updates, tag the 2521 * flag to let fsck be aware of it. 2522 */ 2523 if (is_journalled_quota(sbi)) 2524 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2525 return err; 2526 } 2527 2528 void f2fs_quota_off_umount(struct super_block *sb) 2529 { 2530 int type; 2531 int err; 2532 2533 for (type = 0; type < MAXQUOTAS; type++) { 2534 err = __f2fs_quota_off(sb, type); 2535 if (err) { 2536 int ret = dquot_quota_off(sb, type); 2537 2538 f2fs_err(F2FS_SB(sb), "Fail to turn off disk quota (type: %d, err: %d, ret:%d), Please run fsck to fix it.", 2539 type, err, ret); 2540 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2541 } 2542 } 2543 /* 2544 * In case of checkpoint=disable, we must flush quota blocks. 2545 * This can cause NULL exception for node_inode in end_io, since 2546 * put_super already dropped it. 2547 */ 2548 sync_filesystem(sb); 2549 } 2550 2551 static void f2fs_truncate_quota_inode_pages(struct super_block *sb) 2552 { 2553 struct quota_info *dqopt = sb_dqopt(sb); 2554 int type; 2555 2556 for (type = 0; type < MAXQUOTAS; type++) { 2557 if (!dqopt->files[type]) 2558 continue; 2559 f2fs_inode_synced(dqopt->files[type]); 2560 } 2561 } 2562 2563 static int f2fs_dquot_commit(struct dquot *dquot) 2564 { 2565 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2566 int ret; 2567 2568 down_read_nested(&sbi->quota_sem, SINGLE_DEPTH_NESTING); 2569 ret = dquot_commit(dquot); 2570 if (ret < 0) 2571 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2572 up_read(&sbi->quota_sem); 2573 return ret; 2574 } 2575 2576 static int f2fs_dquot_acquire(struct dquot *dquot) 2577 { 2578 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2579 int ret; 2580 2581 down_read(&sbi->quota_sem); 2582 ret = dquot_acquire(dquot); 2583 if (ret < 0) 2584 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2585 up_read(&sbi->quota_sem); 2586 return ret; 2587 } 2588 2589 static int f2fs_dquot_release(struct dquot *dquot) 2590 { 2591 struct f2fs_sb_info *sbi = F2FS_SB(dquot->dq_sb); 2592 int ret = dquot_release(dquot); 2593 2594 if (ret < 0) 2595 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2596 return ret; 2597 } 2598 2599 static int f2fs_dquot_mark_dquot_dirty(struct dquot *dquot) 2600 { 2601 struct super_block *sb = dquot->dq_sb; 2602 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2603 int ret = dquot_mark_dquot_dirty(dquot); 2604 2605 /* if we are using journalled quota */ 2606 if (is_journalled_quota(sbi)) 2607 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 2608 2609 return ret; 2610 } 2611 2612 static int f2fs_dquot_commit_info(struct super_block *sb, int type) 2613 { 2614 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2615 int ret = dquot_commit_info(sb, type); 2616 2617 if (ret < 0) 2618 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 2619 return ret; 2620 } 2621 2622 static int f2fs_get_projid(struct inode *inode, kprojid_t *projid) 2623 { 2624 *projid = F2FS_I(inode)->i_projid; 2625 return 0; 2626 } 2627 2628 static const struct dquot_operations f2fs_quota_operations = { 2629 .get_reserved_space = f2fs_get_reserved_space, 2630 .write_dquot = f2fs_dquot_commit, 2631 .acquire_dquot = f2fs_dquot_acquire, 2632 .release_dquot = f2fs_dquot_release, 2633 .mark_dirty = f2fs_dquot_mark_dquot_dirty, 2634 .write_info = f2fs_dquot_commit_info, 2635 .alloc_dquot = dquot_alloc, 2636 .destroy_dquot = dquot_destroy, 2637 .get_projid = f2fs_get_projid, 2638 .get_next_id = dquot_get_next_id, 2639 }; 2640 2641 static const struct quotactl_ops f2fs_quotactl_ops = { 2642 .quota_on = f2fs_quota_on, 2643 .quota_off = f2fs_quota_off, 2644 .quota_sync = f2fs_quota_sync, 2645 .get_state = dquot_get_state, 2646 .set_info = dquot_set_dqinfo, 2647 .get_dqblk = dquot_get_dqblk, 2648 .set_dqblk = dquot_set_dqblk, 2649 .get_nextdqblk = dquot_get_next_dqblk, 2650 }; 2651 #else 2652 int f2fs_quota_sync(struct super_block *sb, int type) 2653 { 2654 return 0; 2655 } 2656 2657 void f2fs_quota_off_umount(struct super_block *sb) 2658 { 2659 } 2660 #endif 2661 2662 static const struct super_operations f2fs_sops = { 2663 .alloc_inode = f2fs_alloc_inode, 2664 .free_inode = f2fs_free_inode, 2665 .drop_inode = f2fs_drop_inode, 2666 .write_inode = f2fs_write_inode, 2667 .dirty_inode = f2fs_dirty_inode, 2668 .show_options = f2fs_show_options, 2669 #ifdef CONFIG_QUOTA 2670 .quota_read = f2fs_quota_read, 2671 .quota_write = f2fs_quota_write, 2672 .get_dquots = f2fs_get_dquots, 2673 #endif 2674 .evict_inode = f2fs_evict_inode, 2675 .put_super = f2fs_put_super, 2676 .sync_fs = f2fs_sync_fs, 2677 .freeze_fs = f2fs_freeze, 2678 .unfreeze_fs = f2fs_unfreeze, 2679 .statfs = f2fs_statfs, 2680 .remount_fs = f2fs_remount, 2681 }; 2682 2683 #ifdef CONFIG_FS_ENCRYPTION 2684 static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) 2685 { 2686 return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 2687 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 2688 ctx, len, NULL); 2689 } 2690 2691 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, 2692 void *fs_data) 2693 { 2694 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 2695 2696 /* 2697 * Encrypting the root directory is not allowed because fsck 2698 * expects lost+found directory to exist and remain unencrypted 2699 * if LOST_FOUND feature is enabled. 2700 * 2701 */ 2702 if (f2fs_sb_has_lost_found(sbi) && 2703 inode->i_ino == F2FS_ROOT_INO(sbi)) 2704 return -EPERM; 2705 2706 return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, 2707 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, 2708 ctx, len, fs_data, XATTR_CREATE); 2709 } 2710 2711 static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) 2712 { 2713 return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; 2714 } 2715 2716 static bool f2fs_has_stable_inodes(struct super_block *sb) 2717 { 2718 return true; 2719 } 2720 2721 static void f2fs_get_ino_and_lblk_bits(struct super_block *sb, 2722 int *ino_bits_ret, int *lblk_bits_ret) 2723 { 2724 *ino_bits_ret = 8 * sizeof(nid_t); 2725 *lblk_bits_ret = 8 * sizeof(block_t); 2726 } 2727 2728 static int f2fs_get_num_devices(struct super_block *sb) 2729 { 2730 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2731 2732 if (f2fs_is_multi_device(sbi)) 2733 return sbi->s_ndevs; 2734 return 1; 2735 } 2736 2737 static void f2fs_get_devices(struct super_block *sb, 2738 struct request_queue **devs) 2739 { 2740 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2741 int i; 2742 2743 for (i = 0; i < sbi->s_ndevs; i++) 2744 devs[i] = bdev_get_queue(FDEV(i).bdev); 2745 } 2746 2747 static const struct fscrypt_operations f2fs_cryptops = { 2748 .key_prefix = "f2fs:", 2749 .get_context = f2fs_get_context, 2750 .set_context = f2fs_set_context, 2751 .get_dummy_policy = f2fs_get_dummy_policy, 2752 .empty_dir = f2fs_empty_dir, 2753 .max_namelen = F2FS_NAME_LEN, 2754 .has_stable_inodes = f2fs_has_stable_inodes, 2755 .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits, 2756 .get_num_devices = f2fs_get_num_devices, 2757 .get_devices = f2fs_get_devices, 2758 }; 2759 #endif 2760 2761 static struct inode *f2fs_nfs_get_inode(struct super_block *sb, 2762 u64 ino, u32 generation) 2763 { 2764 struct f2fs_sb_info *sbi = F2FS_SB(sb); 2765 struct inode *inode; 2766 2767 if (f2fs_check_nid_range(sbi, ino)) 2768 return ERR_PTR(-ESTALE); 2769 2770 /* 2771 * f2fs_iget isn't quite right if the inode is currently unallocated! 2772 * However f2fs_iget currently does appropriate checks to handle stale 2773 * inodes so everything is OK. 2774 */ 2775 inode = f2fs_iget(sb, ino); 2776 if (IS_ERR(inode)) 2777 return ERR_CAST(inode); 2778 if (unlikely(generation && inode->i_generation != generation)) { 2779 /* we didn't find the right inode.. */ 2780 iput(inode); 2781 return ERR_PTR(-ESTALE); 2782 } 2783 return inode; 2784 } 2785 2786 static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, 2787 int fh_len, int fh_type) 2788 { 2789 return generic_fh_to_dentry(sb, fid, fh_len, fh_type, 2790 f2fs_nfs_get_inode); 2791 } 2792 2793 static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, 2794 int fh_len, int fh_type) 2795 { 2796 return generic_fh_to_parent(sb, fid, fh_len, fh_type, 2797 f2fs_nfs_get_inode); 2798 } 2799 2800 static const struct export_operations f2fs_export_ops = { 2801 .fh_to_dentry = f2fs_fh_to_dentry, 2802 .fh_to_parent = f2fs_fh_to_parent, 2803 .get_parent = f2fs_get_parent, 2804 }; 2805 2806 loff_t max_file_blocks(struct inode *inode) 2807 { 2808 loff_t result = 0; 2809 loff_t leaf_count; 2810 2811 /* 2812 * note: previously, result is equal to (DEF_ADDRS_PER_INODE - 2813 * DEFAULT_INLINE_XATTR_ADDRS), but now f2fs try to reserve more 2814 * space in inode.i_addr, it will be more safe to reassign 2815 * result as zero. 2816 */ 2817 2818 if (inode && f2fs_compressed_file(inode)) 2819 leaf_count = ADDRS_PER_BLOCK(inode); 2820 else 2821 leaf_count = DEF_ADDRS_PER_BLOCK; 2822 2823 /* two direct node blocks */ 2824 result += (leaf_count * 2); 2825 2826 /* two indirect node blocks */ 2827 leaf_count *= NIDS_PER_BLOCK; 2828 result += (leaf_count * 2); 2829 2830 /* one double indirect node block */ 2831 leaf_count *= NIDS_PER_BLOCK; 2832 result += leaf_count; 2833 2834 return result; 2835 } 2836 2837 static int __f2fs_commit_super(struct buffer_head *bh, 2838 struct f2fs_super_block *super) 2839 { 2840 lock_buffer(bh); 2841 if (super) 2842 memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); 2843 set_buffer_dirty(bh); 2844 unlock_buffer(bh); 2845 2846 /* it's rare case, we can do fua all the time */ 2847 return __sync_dirty_buffer(bh, REQ_SYNC | REQ_PREFLUSH | REQ_FUA); 2848 } 2849 2850 static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, 2851 struct buffer_head *bh) 2852 { 2853 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 2854 (bh->b_data + F2FS_SUPER_OFFSET); 2855 struct super_block *sb = sbi->sb; 2856 u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); 2857 u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); 2858 u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); 2859 u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); 2860 u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); 2861 u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); 2862 u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); 2863 u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); 2864 u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); 2865 u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); 2866 u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 2867 u32 segment_count = le32_to_cpu(raw_super->segment_count); 2868 u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 2869 u64 main_end_blkaddr = main_blkaddr + 2870 (segment_count_main << log_blocks_per_seg); 2871 u64 seg_end_blkaddr = segment0_blkaddr + 2872 (segment_count << log_blocks_per_seg); 2873 2874 if (segment0_blkaddr != cp_blkaddr) { 2875 f2fs_info(sbi, "Mismatch start address, segment0(%u) cp_blkaddr(%u)", 2876 segment0_blkaddr, cp_blkaddr); 2877 return true; 2878 } 2879 2880 if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != 2881 sit_blkaddr) { 2882 f2fs_info(sbi, "Wrong CP boundary, start(%u) end(%u) blocks(%u)", 2883 cp_blkaddr, sit_blkaddr, 2884 segment_count_ckpt << log_blocks_per_seg); 2885 return true; 2886 } 2887 2888 if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != 2889 nat_blkaddr) { 2890 f2fs_info(sbi, "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", 2891 sit_blkaddr, nat_blkaddr, 2892 segment_count_sit << log_blocks_per_seg); 2893 return true; 2894 } 2895 2896 if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != 2897 ssa_blkaddr) { 2898 f2fs_info(sbi, "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", 2899 nat_blkaddr, ssa_blkaddr, 2900 segment_count_nat << log_blocks_per_seg); 2901 return true; 2902 } 2903 2904 if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != 2905 main_blkaddr) { 2906 f2fs_info(sbi, "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", 2907 ssa_blkaddr, main_blkaddr, 2908 segment_count_ssa << log_blocks_per_seg); 2909 return true; 2910 } 2911 2912 if (main_end_blkaddr > seg_end_blkaddr) { 2913 f2fs_info(sbi, "Wrong MAIN_AREA boundary, start(%u) end(%llu) block(%u)", 2914 main_blkaddr, seg_end_blkaddr, 2915 segment_count_main << log_blocks_per_seg); 2916 return true; 2917 } else if (main_end_blkaddr < seg_end_blkaddr) { 2918 int err = 0; 2919 char *res; 2920 2921 /* fix in-memory information all the time */ 2922 raw_super->segment_count = cpu_to_le32((main_end_blkaddr - 2923 segment0_blkaddr) >> log_blocks_per_seg); 2924 2925 if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { 2926 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 2927 res = "internally"; 2928 } else { 2929 err = __f2fs_commit_super(bh, NULL); 2930 res = err ? "failed" : "done"; 2931 } 2932 f2fs_info(sbi, "Fix alignment : %s, start(%u) end(%llu) block(%u)", 2933 res, main_blkaddr, seg_end_blkaddr, 2934 segment_count_main << log_blocks_per_seg); 2935 if (err) 2936 return true; 2937 } 2938 return false; 2939 } 2940 2941 static int sanity_check_raw_super(struct f2fs_sb_info *sbi, 2942 struct buffer_head *bh) 2943 { 2944 block_t segment_count, segs_per_sec, secs_per_zone, segment_count_main; 2945 block_t total_sections, blocks_per_seg; 2946 struct f2fs_super_block *raw_super = (struct f2fs_super_block *) 2947 (bh->b_data + F2FS_SUPER_OFFSET); 2948 size_t crc_offset = 0; 2949 __u32 crc = 0; 2950 2951 if (le32_to_cpu(raw_super->magic) != F2FS_SUPER_MAGIC) { 2952 f2fs_info(sbi, "Magic Mismatch, valid(0x%x) - read(0x%x)", 2953 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); 2954 return -EINVAL; 2955 } 2956 2957 /* Check checksum_offset and crc in superblock */ 2958 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_SB_CHKSUM)) { 2959 crc_offset = le32_to_cpu(raw_super->checksum_offset); 2960 if (crc_offset != 2961 offsetof(struct f2fs_super_block, crc)) { 2962 f2fs_info(sbi, "Invalid SB checksum offset: %zu", 2963 crc_offset); 2964 return -EFSCORRUPTED; 2965 } 2966 crc = le32_to_cpu(raw_super->crc); 2967 if (!f2fs_crc_valid(sbi, crc, raw_super, crc_offset)) { 2968 f2fs_info(sbi, "Invalid SB checksum value: %u", crc); 2969 return -EFSCORRUPTED; 2970 } 2971 } 2972 2973 /* Currently, support only 4KB block size */ 2974 if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) { 2975 f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u", 2976 le32_to_cpu(raw_super->log_blocksize), 2977 F2FS_BLKSIZE_BITS); 2978 return -EFSCORRUPTED; 2979 } 2980 2981 /* check log blocks per segment */ 2982 if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { 2983 f2fs_info(sbi, "Invalid log blocks per segment (%u)", 2984 le32_to_cpu(raw_super->log_blocks_per_seg)); 2985 return -EFSCORRUPTED; 2986 } 2987 2988 /* Currently, support 512/1024/2048/4096 bytes sector size */ 2989 if (le32_to_cpu(raw_super->log_sectorsize) > 2990 F2FS_MAX_LOG_SECTOR_SIZE || 2991 le32_to_cpu(raw_super->log_sectorsize) < 2992 F2FS_MIN_LOG_SECTOR_SIZE) { 2993 f2fs_info(sbi, "Invalid log sectorsize (%u)", 2994 le32_to_cpu(raw_super->log_sectorsize)); 2995 return -EFSCORRUPTED; 2996 } 2997 if (le32_to_cpu(raw_super->log_sectors_per_block) + 2998 le32_to_cpu(raw_super->log_sectorsize) != 2999 F2FS_MAX_LOG_SECTOR_SIZE) { 3000 f2fs_info(sbi, "Invalid log sectors per block(%u) log sectorsize(%u)", 3001 le32_to_cpu(raw_super->log_sectors_per_block), 3002 le32_to_cpu(raw_super->log_sectorsize)); 3003 return -EFSCORRUPTED; 3004 } 3005 3006 segment_count = le32_to_cpu(raw_super->segment_count); 3007 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3008 segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3009 secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3010 total_sections = le32_to_cpu(raw_super->section_count); 3011 3012 /* blocks_per_seg should be 512, given the above check */ 3013 blocks_per_seg = 1 << le32_to_cpu(raw_super->log_blocks_per_seg); 3014 3015 if (segment_count > F2FS_MAX_SEGMENT || 3016 segment_count < F2FS_MIN_SEGMENTS) { 3017 f2fs_info(sbi, "Invalid segment count (%u)", segment_count); 3018 return -EFSCORRUPTED; 3019 } 3020 3021 if (total_sections > segment_count_main || total_sections < 1 || 3022 segs_per_sec > segment_count || !segs_per_sec) { 3023 f2fs_info(sbi, "Invalid segment/section count (%u, %u x %u)", 3024 segment_count, total_sections, segs_per_sec); 3025 return -EFSCORRUPTED; 3026 } 3027 3028 if (segment_count_main != total_sections * segs_per_sec) { 3029 f2fs_info(sbi, "Invalid segment/section count (%u != %u * %u)", 3030 segment_count_main, total_sections, segs_per_sec); 3031 return -EFSCORRUPTED; 3032 } 3033 3034 if ((segment_count / segs_per_sec) < total_sections) { 3035 f2fs_info(sbi, "Small segment_count (%u < %u * %u)", 3036 segment_count, segs_per_sec, total_sections); 3037 return -EFSCORRUPTED; 3038 } 3039 3040 if (segment_count > (le64_to_cpu(raw_super->block_count) >> 9)) { 3041 f2fs_info(sbi, "Wrong segment_count / block_count (%u > %llu)", 3042 segment_count, le64_to_cpu(raw_super->block_count)); 3043 return -EFSCORRUPTED; 3044 } 3045 3046 if (RDEV(0).path[0]) { 3047 block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); 3048 int i = 1; 3049 3050 while (i < MAX_DEVICES && RDEV(i).path[0]) { 3051 dev_seg_count += le32_to_cpu(RDEV(i).total_segments); 3052 i++; 3053 } 3054 if (segment_count != dev_seg_count) { 3055 f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", 3056 segment_count, dev_seg_count); 3057 return -EFSCORRUPTED; 3058 } 3059 } else { 3060 if (__F2FS_HAS_FEATURE(raw_super, F2FS_FEATURE_BLKZONED) && 3061 !bdev_is_zoned(sbi->sb->s_bdev)) { 3062 f2fs_info(sbi, "Zoned block device path is missing"); 3063 return -EFSCORRUPTED; 3064 } 3065 } 3066 3067 if (secs_per_zone > total_sections || !secs_per_zone) { 3068 f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", 3069 secs_per_zone, total_sections); 3070 return -EFSCORRUPTED; 3071 } 3072 if (le32_to_cpu(raw_super->extension_count) > F2FS_MAX_EXTENSION || 3073 raw_super->hot_ext_count > F2FS_MAX_EXTENSION || 3074 (le32_to_cpu(raw_super->extension_count) + 3075 raw_super->hot_ext_count) > F2FS_MAX_EXTENSION) { 3076 f2fs_info(sbi, "Corrupted extension count (%u + %u > %u)", 3077 le32_to_cpu(raw_super->extension_count), 3078 raw_super->hot_ext_count, 3079 F2FS_MAX_EXTENSION); 3080 return -EFSCORRUPTED; 3081 } 3082 3083 if (le32_to_cpu(raw_super->cp_payload) > 3084 (blocks_per_seg - F2FS_CP_PACKS)) { 3085 f2fs_info(sbi, "Insane cp_payload (%u > %u)", 3086 le32_to_cpu(raw_super->cp_payload), 3087 blocks_per_seg - F2FS_CP_PACKS); 3088 return -EFSCORRUPTED; 3089 } 3090 3091 /* check reserved ino info */ 3092 if (le32_to_cpu(raw_super->node_ino) != 1 || 3093 le32_to_cpu(raw_super->meta_ino) != 2 || 3094 le32_to_cpu(raw_super->root_ino) != 3) { 3095 f2fs_info(sbi, "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", 3096 le32_to_cpu(raw_super->node_ino), 3097 le32_to_cpu(raw_super->meta_ino), 3098 le32_to_cpu(raw_super->root_ino)); 3099 return -EFSCORRUPTED; 3100 } 3101 3102 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ 3103 if (sanity_check_area_boundary(sbi, bh)) 3104 return -EFSCORRUPTED; 3105 3106 return 0; 3107 } 3108 3109 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi) 3110 { 3111 unsigned int total, fsmeta; 3112 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3113 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 3114 unsigned int ovp_segments, reserved_segments; 3115 unsigned int main_segs, blocks_per_seg; 3116 unsigned int sit_segs, nat_segs; 3117 unsigned int sit_bitmap_size, nat_bitmap_size; 3118 unsigned int log_blocks_per_seg; 3119 unsigned int segment_count_main; 3120 unsigned int cp_pack_start_sum, cp_payload; 3121 block_t user_block_count, valid_user_blocks; 3122 block_t avail_node_count, valid_node_count; 3123 int i, j; 3124 3125 total = le32_to_cpu(raw_super->segment_count); 3126 fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); 3127 sit_segs = le32_to_cpu(raw_super->segment_count_sit); 3128 fsmeta += sit_segs; 3129 nat_segs = le32_to_cpu(raw_super->segment_count_nat); 3130 fsmeta += nat_segs; 3131 fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); 3132 fsmeta += le32_to_cpu(raw_super->segment_count_ssa); 3133 3134 if (unlikely(fsmeta >= total)) 3135 return 1; 3136 3137 ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); 3138 reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); 3139 3140 if (unlikely(fsmeta < F2FS_MIN_META_SEGMENTS || 3141 ovp_segments == 0 || reserved_segments == 0)) { 3142 f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version"); 3143 return 1; 3144 } 3145 3146 user_block_count = le64_to_cpu(ckpt->user_block_count); 3147 segment_count_main = le32_to_cpu(raw_super->segment_count_main); 3148 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3149 if (!user_block_count || user_block_count >= 3150 segment_count_main << log_blocks_per_seg) { 3151 f2fs_err(sbi, "Wrong user_block_count: %u", 3152 user_block_count); 3153 return 1; 3154 } 3155 3156 valid_user_blocks = le64_to_cpu(ckpt->valid_block_count); 3157 if (valid_user_blocks > user_block_count) { 3158 f2fs_err(sbi, "Wrong valid_user_blocks: %u, user_block_count: %u", 3159 valid_user_blocks, user_block_count); 3160 return 1; 3161 } 3162 3163 valid_node_count = le32_to_cpu(ckpt->valid_node_count); 3164 avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; 3165 if (valid_node_count > avail_node_count) { 3166 f2fs_err(sbi, "Wrong valid_node_count: %u, avail_node_count: %u", 3167 valid_node_count, avail_node_count); 3168 return 1; 3169 } 3170 3171 main_segs = le32_to_cpu(raw_super->segment_count_main); 3172 blocks_per_seg = sbi->blocks_per_seg; 3173 3174 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3175 if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs || 3176 le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg) 3177 return 1; 3178 for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) { 3179 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3180 le32_to_cpu(ckpt->cur_node_segno[j])) { 3181 f2fs_err(sbi, "Node segment (%u, %u) has the same segno: %u", 3182 i, j, 3183 le32_to_cpu(ckpt->cur_node_segno[i])); 3184 return 1; 3185 } 3186 } 3187 } 3188 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 3189 if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs || 3190 le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg) 3191 return 1; 3192 for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) { 3193 if (le32_to_cpu(ckpt->cur_data_segno[i]) == 3194 le32_to_cpu(ckpt->cur_data_segno[j])) { 3195 f2fs_err(sbi, "Data segment (%u, %u) has the same segno: %u", 3196 i, j, 3197 le32_to_cpu(ckpt->cur_data_segno[i])); 3198 return 1; 3199 } 3200 } 3201 } 3202 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 3203 for (j = 0; j < NR_CURSEG_DATA_TYPE; j++) { 3204 if (le32_to_cpu(ckpt->cur_node_segno[i]) == 3205 le32_to_cpu(ckpt->cur_data_segno[j])) { 3206 f2fs_err(sbi, "Node segment (%u) and Data segment (%u) has the same segno: %u", 3207 i, j, 3208 le32_to_cpu(ckpt->cur_node_segno[i])); 3209 return 1; 3210 } 3211 } 3212 } 3213 3214 sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 3215 nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 3216 3217 if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 || 3218 nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) { 3219 f2fs_err(sbi, "Wrong bitmap size: sit: %u, nat:%u", 3220 sit_bitmap_size, nat_bitmap_size); 3221 return 1; 3222 } 3223 3224 cp_pack_start_sum = __start_sum_addr(sbi); 3225 cp_payload = __cp_payload(sbi); 3226 if (cp_pack_start_sum < cp_payload + 1 || 3227 cp_pack_start_sum > blocks_per_seg - 1 - 3228 NR_CURSEG_PERSIST_TYPE) { 3229 f2fs_err(sbi, "Wrong cp_pack_start_sum: %u", 3230 cp_pack_start_sum); 3231 return 1; 3232 } 3233 3234 if (__is_set_ckpt_flags(ckpt, CP_LARGE_NAT_BITMAP_FLAG) && 3235 le32_to_cpu(ckpt->checksum_offset) != CP_MIN_CHKSUM_OFFSET) { 3236 f2fs_warn(sbi, "using deprecated layout of large_nat_bitmap, " 3237 "please run fsck v1.13.0 or higher to repair, chksum_offset: %u, " 3238 "fixed with patch: \"f2fs-tools: relocate chksum_offset for large_nat_bitmap feature\"", 3239 le32_to_cpu(ckpt->checksum_offset)); 3240 return 1; 3241 } 3242 3243 if (unlikely(f2fs_cp_error(sbi))) { 3244 f2fs_err(sbi, "A bug case: need to run fsck"); 3245 return 1; 3246 } 3247 return 0; 3248 } 3249 3250 static void init_sb_info(struct f2fs_sb_info *sbi) 3251 { 3252 struct f2fs_super_block *raw_super = sbi->raw_super; 3253 int i; 3254 3255 sbi->log_sectors_per_block = 3256 le32_to_cpu(raw_super->log_sectors_per_block); 3257 sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); 3258 sbi->blocksize = 1 << sbi->log_blocksize; 3259 sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); 3260 sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; 3261 sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); 3262 sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); 3263 sbi->total_sections = le32_to_cpu(raw_super->section_count); 3264 sbi->total_node_count = 3265 (le32_to_cpu(raw_super->segment_count_nat) / 2) 3266 * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; 3267 F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino); 3268 F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino); 3269 F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino); 3270 sbi->cur_victim_sec = NULL_SECNO; 3271 sbi->next_victim_seg[BG_GC] = NULL_SEGNO; 3272 sbi->next_victim_seg[FG_GC] = NULL_SEGNO; 3273 sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; 3274 sbi->migration_granularity = sbi->segs_per_sec; 3275 3276 sbi->dir_level = DEF_DIR_LEVEL; 3277 sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; 3278 sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; 3279 sbi->interval_time[DISCARD_TIME] = DEF_IDLE_INTERVAL; 3280 sbi->interval_time[GC_TIME] = DEF_IDLE_INTERVAL; 3281 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_INTERVAL; 3282 sbi->interval_time[UMOUNT_DISCARD_TIMEOUT] = 3283 DEF_UMOUNT_DISCARD_TIMEOUT; 3284 clear_sbi_flag(sbi, SBI_NEED_FSCK); 3285 3286 for (i = 0; i < NR_COUNT_TYPE; i++) 3287 atomic_set(&sbi->nr_pages[i], 0); 3288 3289 for (i = 0; i < META; i++) 3290 atomic_set(&sbi->wb_sync_req[i], 0); 3291 3292 INIT_LIST_HEAD(&sbi->s_list); 3293 mutex_init(&sbi->umount_mutex); 3294 init_rwsem(&sbi->io_order_lock); 3295 spin_lock_init(&sbi->cp_lock); 3296 3297 sbi->dirty_device = 0; 3298 spin_lock_init(&sbi->dev_lock); 3299 3300 init_rwsem(&sbi->sb_lock); 3301 init_rwsem(&sbi->pin_sem); 3302 } 3303 3304 static int init_percpu_info(struct f2fs_sb_info *sbi) 3305 { 3306 int err; 3307 3308 err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); 3309 if (err) 3310 return err; 3311 3312 err = percpu_counter_init(&sbi->total_valid_inode_count, 0, 3313 GFP_KERNEL); 3314 if (err) 3315 percpu_counter_destroy(&sbi->alloc_valid_block_count); 3316 3317 return err; 3318 } 3319 3320 #ifdef CONFIG_BLK_DEV_ZONED 3321 3322 struct f2fs_report_zones_args { 3323 struct f2fs_dev_info *dev; 3324 bool zone_cap_mismatch; 3325 }; 3326 3327 static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx, 3328 void *data) 3329 { 3330 struct f2fs_report_zones_args *rz_args = data; 3331 3332 if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) 3333 return 0; 3334 3335 set_bit(idx, rz_args->dev->blkz_seq); 3336 rz_args->dev->zone_capacity_blocks[idx] = zone->capacity >> 3337 F2FS_LOG_SECTORS_PER_BLOCK; 3338 if (zone->len != zone->capacity && !rz_args->zone_cap_mismatch) 3339 rz_args->zone_cap_mismatch = true; 3340 3341 return 0; 3342 } 3343 3344 static int init_blkz_info(struct f2fs_sb_info *sbi, int devi) 3345 { 3346 struct block_device *bdev = FDEV(devi).bdev; 3347 sector_t nr_sectors = bdev_nr_sectors(bdev); 3348 struct f2fs_report_zones_args rep_zone_arg; 3349 int ret; 3350 3351 if (!f2fs_sb_has_blkzoned(sbi)) 3352 return 0; 3353 3354 if (sbi->blocks_per_blkz && sbi->blocks_per_blkz != 3355 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev))) 3356 return -EINVAL; 3357 sbi->blocks_per_blkz = SECTOR_TO_BLOCK(bdev_zone_sectors(bdev)); 3358 if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz != 3359 __ilog2_u32(sbi->blocks_per_blkz)) 3360 return -EINVAL; 3361 sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz); 3362 FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >> 3363 sbi->log_blocks_per_blkz; 3364 if (nr_sectors & (bdev_zone_sectors(bdev) - 1)) 3365 FDEV(devi).nr_blkz++; 3366 3367 FDEV(devi).blkz_seq = f2fs_kvzalloc(sbi, 3368 BITS_TO_LONGS(FDEV(devi).nr_blkz) 3369 * sizeof(unsigned long), 3370 GFP_KERNEL); 3371 if (!FDEV(devi).blkz_seq) 3372 return -ENOMEM; 3373 3374 /* Get block zones type and zone-capacity */ 3375 FDEV(devi).zone_capacity_blocks = f2fs_kzalloc(sbi, 3376 FDEV(devi).nr_blkz * sizeof(block_t), 3377 GFP_KERNEL); 3378 if (!FDEV(devi).zone_capacity_blocks) 3379 return -ENOMEM; 3380 3381 rep_zone_arg.dev = &FDEV(devi); 3382 rep_zone_arg.zone_cap_mismatch = false; 3383 3384 ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb, 3385 &rep_zone_arg); 3386 if (ret < 0) 3387 return ret; 3388 3389 if (!rep_zone_arg.zone_cap_mismatch) { 3390 kfree(FDEV(devi).zone_capacity_blocks); 3391 FDEV(devi).zone_capacity_blocks = NULL; 3392 } 3393 3394 return 0; 3395 } 3396 #endif 3397 3398 /* 3399 * Read f2fs raw super block. 3400 * Because we have two copies of super block, so read both of them 3401 * to get the first valid one. If any one of them is broken, we pass 3402 * them recovery flag back to the caller. 3403 */ 3404 static int read_raw_super_block(struct f2fs_sb_info *sbi, 3405 struct f2fs_super_block **raw_super, 3406 int *valid_super_block, int *recovery) 3407 { 3408 struct super_block *sb = sbi->sb; 3409 int block; 3410 struct buffer_head *bh; 3411 struct f2fs_super_block *super; 3412 int err = 0; 3413 3414 super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); 3415 if (!super) 3416 return -ENOMEM; 3417 3418 for (block = 0; block < 2; block++) { 3419 bh = sb_bread(sb, block); 3420 if (!bh) { 3421 f2fs_err(sbi, "Unable to read %dth superblock", 3422 block + 1); 3423 err = -EIO; 3424 *recovery = 1; 3425 continue; 3426 } 3427 3428 /* sanity checking of raw super */ 3429 err = sanity_check_raw_super(sbi, bh); 3430 if (err) { 3431 f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock", 3432 block + 1); 3433 brelse(bh); 3434 *recovery = 1; 3435 continue; 3436 } 3437 3438 if (!*raw_super) { 3439 memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, 3440 sizeof(*super)); 3441 *valid_super_block = block; 3442 *raw_super = super; 3443 } 3444 brelse(bh); 3445 } 3446 3447 /* No valid superblock */ 3448 if (!*raw_super) 3449 kfree(super); 3450 else 3451 err = 0; 3452 3453 return err; 3454 } 3455 3456 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) 3457 { 3458 struct buffer_head *bh; 3459 __u32 crc = 0; 3460 int err; 3461 3462 if ((recover && f2fs_readonly(sbi->sb)) || 3463 bdev_read_only(sbi->sb->s_bdev)) { 3464 set_sbi_flag(sbi, SBI_NEED_SB_WRITE); 3465 return -EROFS; 3466 } 3467 3468 /* we should update superblock crc here */ 3469 if (!recover && f2fs_sb_has_sb_chksum(sbi)) { 3470 crc = f2fs_crc32(sbi, F2FS_RAW_SUPER(sbi), 3471 offsetof(struct f2fs_super_block, crc)); 3472 F2FS_RAW_SUPER(sbi)->crc = cpu_to_le32(crc); 3473 } 3474 3475 /* write back-up superblock first */ 3476 bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1); 3477 if (!bh) 3478 return -EIO; 3479 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3480 brelse(bh); 3481 3482 /* if we are in recovery path, skip writing valid superblock */ 3483 if (recover || err) 3484 return err; 3485 3486 /* write current valid superblock */ 3487 bh = sb_bread(sbi->sb, sbi->valid_super_block); 3488 if (!bh) 3489 return -EIO; 3490 err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); 3491 brelse(bh); 3492 return err; 3493 } 3494 3495 static int f2fs_scan_devices(struct f2fs_sb_info *sbi) 3496 { 3497 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 3498 unsigned int max_devices = MAX_DEVICES; 3499 int i; 3500 3501 /* Initialize single device information */ 3502 if (!RDEV(0).path[0]) { 3503 if (!bdev_is_zoned(sbi->sb->s_bdev)) 3504 return 0; 3505 max_devices = 1; 3506 } 3507 3508 /* 3509 * Initialize multiple devices information, or single 3510 * zoned block device information. 3511 */ 3512 sbi->devs = f2fs_kzalloc(sbi, 3513 array_size(max_devices, 3514 sizeof(struct f2fs_dev_info)), 3515 GFP_KERNEL); 3516 if (!sbi->devs) 3517 return -ENOMEM; 3518 3519 for (i = 0; i < max_devices; i++) { 3520 3521 if (i > 0 && !RDEV(i).path[0]) 3522 break; 3523 3524 if (max_devices == 1) { 3525 /* Single zoned block device mount */ 3526 FDEV(0).bdev = 3527 blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, 3528 sbi->sb->s_mode, sbi->sb->s_type); 3529 } else { 3530 /* Multi-device mount */ 3531 memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); 3532 FDEV(i).total_segments = 3533 le32_to_cpu(RDEV(i).total_segments); 3534 if (i == 0) { 3535 FDEV(i).start_blk = 0; 3536 FDEV(i).end_blk = FDEV(i).start_blk + 3537 (FDEV(i).total_segments << 3538 sbi->log_blocks_per_seg) - 1 + 3539 le32_to_cpu(raw_super->segment0_blkaddr); 3540 } else { 3541 FDEV(i).start_blk = FDEV(i - 1).end_blk + 1; 3542 FDEV(i).end_blk = FDEV(i).start_blk + 3543 (FDEV(i).total_segments << 3544 sbi->log_blocks_per_seg) - 1; 3545 } 3546 FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, 3547 sbi->sb->s_mode, sbi->sb->s_type); 3548 } 3549 if (IS_ERR(FDEV(i).bdev)) 3550 return PTR_ERR(FDEV(i).bdev); 3551 3552 /* to release errored devices */ 3553 sbi->s_ndevs = i + 1; 3554 3555 #ifdef CONFIG_BLK_DEV_ZONED 3556 if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM && 3557 !f2fs_sb_has_blkzoned(sbi)) { 3558 f2fs_err(sbi, "Zoned block device feature not enabled\n"); 3559 return -EINVAL; 3560 } 3561 if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) { 3562 if (init_blkz_info(sbi, i)) { 3563 f2fs_err(sbi, "Failed to initialize F2FS blkzone information"); 3564 return -EINVAL; 3565 } 3566 if (max_devices == 1) 3567 break; 3568 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)", 3569 i, FDEV(i).path, 3570 FDEV(i).total_segments, 3571 FDEV(i).start_blk, FDEV(i).end_blk, 3572 bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HA ? 3573 "Host-aware" : "Host-managed"); 3574 continue; 3575 } 3576 #endif 3577 f2fs_info(sbi, "Mount Device [%2d]: %20s, %8u, %8x - %8x", 3578 i, FDEV(i).path, 3579 FDEV(i).total_segments, 3580 FDEV(i).start_blk, FDEV(i).end_blk); 3581 } 3582 f2fs_info(sbi, 3583 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi)); 3584 return 0; 3585 } 3586 3587 static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) 3588 { 3589 #ifdef CONFIG_UNICODE 3590 if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { 3591 const struct f2fs_sb_encodings *encoding_info; 3592 struct unicode_map *encoding; 3593 __u16 encoding_flags; 3594 3595 if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info, 3596 &encoding_flags)) { 3597 f2fs_err(sbi, 3598 "Encoding requested by superblock is unknown"); 3599 return -EINVAL; 3600 } 3601 3602 encoding = utf8_load(encoding_info->version); 3603 if (IS_ERR(encoding)) { 3604 f2fs_err(sbi, 3605 "can't mount with superblock charset: %s-%s " 3606 "not supported by the kernel. flags: 0x%x.", 3607 encoding_info->name, encoding_info->version, 3608 encoding_flags); 3609 return PTR_ERR(encoding); 3610 } 3611 f2fs_info(sbi, "Using encoding defined by superblock: " 3612 "%s-%s with flags 0x%hx", encoding_info->name, 3613 encoding_info->version?:"\b", encoding_flags); 3614 3615 sbi->sb->s_encoding = encoding; 3616 sbi->sb->s_encoding_flags = encoding_flags; 3617 } 3618 #else 3619 if (f2fs_sb_has_casefold(sbi)) { 3620 f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); 3621 return -EINVAL; 3622 } 3623 #endif 3624 return 0; 3625 } 3626 3627 static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi) 3628 { 3629 struct f2fs_sm_info *sm_i = SM_I(sbi); 3630 3631 /* adjust parameters according to the volume size */ 3632 if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) { 3633 F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE; 3634 sm_i->dcc_info->discard_granularity = 1; 3635 sm_i->ipu_policy = 1 << F2FS_IPU_FORCE; 3636 } 3637 3638 sbi->readdir_ra = 1; 3639 } 3640 3641 static int f2fs_fill_super(struct super_block *sb, void *data, int silent) 3642 { 3643 struct f2fs_sb_info *sbi; 3644 struct f2fs_super_block *raw_super; 3645 struct inode *root; 3646 int err; 3647 bool skip_recovery = false, need_fsck = false; 3648 char *options = NULL; 3649 int recovery, i, valid_super_block; 3650 struct curseg_info *seg_i; 3651 int retry_cnt = 1; 3652 3653 try_onemore: 3654 err = -EINVAL; 3655 raw_super = NULL; 3656 valid_super_block = -1; 3657 recovery = 0; 3658 3659 /* allocate memory for f2fs-specific super block info */ 3660 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); 3661 if (!sbi) 3662 return -ENOMEM; 3663 3664 sbi->sb = sb; 3665 3666 /* Load the checksum driver */ 3667 sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); 3668 if (IS_ERR(sbi->s_chksum_driver)) { 3669 f2fs_err(sbi, "Cannot load crc32 driver."); 3670 err = PTR_ERR(sbi->s_chksum_driver); 3671 sbi->s_chksum_driver = NULL; 3672 goto free_sbi; 3673 } 3674 3675 /* set a block size */ 3676 if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { 3677 f2fs_err(sbi, "unable to set blocksize"); 3678 goto free_sbi; 3679 } 3680 3681 err = read_raw_super_block(sbi, &raw_super, &valid_super_block, 3682 &recovery); 3683 if (err) 3684 goto free_sbi; 3685 3686 sb->s_fs_info = sbi; 3687 sbi->raw_super = raw_super; 3688 3689 /* precompute checksum seed for metadata */ 3690 if (f2fs_sb_has_inode_chksum(sbi)) 3691 sbi->s_chksum_seed = f2fs_chksum(sbi, ~0, raw_super->uuid, 3692 sizeof(raw_super->uuid)); 3693 3694 default_options(sbi); 3695 /* parse mount options */ 3696 options = kstrdup((const char *)data, GFP_KERNEL); 3697 if (data && !options) { 3698 err = -ENOMEM; 3699 goto free_sb_buf; 3700 } 3701 3702 err = parse_options(sb, options, false); 3703 if (err) 3704 goto free_options; 3705 3706 sb->s_maxbytes = max_file_blocks(NULL) << 3707 le32_to_cpu(raw_super->log_blocksize); 3708 sb->s_max_links = F2FS_LINK_MAX; 3709 3710 err = f2fs_setup_casefold(sbi); 3711 if (err) 3712 goto free_options; 3713 3714 #ifdef CONFIG_QUOTA 3715 sb->dq_op = &f2fs_quota_operations; 3716 sb->s_qcop = &f2fs_quotactl_ops; 3717 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; 3718 3719 if (f2fs_sb_has_quota_ino(sbi)) { 3720 for (i = 0; i < MAXQUOTAS; i++) { 3721 if (f2fs_qf_ino(sbi->sb, i)) 3722 sbi->nquota_files++; 3723 } 3724 } 3725 #endif 3726 3727 sb->s_op = &f2fs_sops; 3728 #ifdef CONFIG_FS_ENCRYPTION 3729 sb->s_cop = &f2fs_cryptops; 3730 #endif 3731 #ifdef CONFIG_FS_VERITY 3732 sb->s_vop = &f2fs_verityops; 3733 #endif 3734 sb->s_xattr = f2fs_xattr_handlers; 3735 sb->s_export_op = &f2fs_export_ops; 3736 sb->s_magic = F2FS_SUPER_MAGIC; 3737 sb->s_time_gran = 1; 3738 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | 3739 (test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0); 3740 memcpy(&sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); 3741 sb->s_iflags |= SB_I_CGROUPWB; 3742 3743 /* init f2fs-specific super block info */ 3744 sbi->valid_super_block = valid_super_block; 3745 init_rwsem(&sbi->gc_lock); 3746 mutex_init(&sbi->writepages); 3747 init_rwsem(&sbi->cp_global_sem); 3748 init_rwsem(&sbi->node_write); 3749 init_rwsem(&sbi->node_change); 3750 3751 /* disallow all the data/node/meta page writes */ 3752 set_sbi_flag(sbi, SBI_POR_DOING); 3753 spin_lock_init(&sbi->stat_lock); 3754 3755 /* init iostat info */ 3756 spin_lock_init(&sbi->iostat_lock); 3757 sbi->iostat_enable = false; 3758 sbi->iostat_period_ms = DEFAULT_IOSTAT_PERIOD_MS; 3759 3760 for (i = 0; i < NR_PAGE_TYPE; i++) { 3761 int n = (i == META) ? 1 : NR_TEMP_TYPE; 3762 int j; 3763 3764 sbi->write_io[i] = 3765 f2fs_kmalloc(sbi, 3766 array_size(n, 3767 sizeof(struct f2fs_bio_info)), 3768 GFP_KERNEL); 3769 if (!sbi->write_io[i]) { 3770 err = -ENOMEM; 3771 goto free_bio_info; 3772 } 3773 3774 for (j = HOT; j < n; j++) { 3775 init_rwsem(&sbi->write_io[i][j].io_rwsem); 3776 sbi->write_io[i][j].sbi = sbi; 3777 sbi->write_io[i][j].bio = NULL; 3778 spin_lock_init(&sbi->write_io[i][j].io_lock); 3779 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list); 3780 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list); 3781 init_rwsem(&sbi->write_io[i][j].bio_list_lock); 3782 } 3783 } 3784 3785 init_rwsem(&sbi->cp_rwsem); 3786 init_rwsem(&sbi->quota_sem); 3787 init_waitqueue_head(&sbi->cp_wait); 3788 init_sb_info(sbi); 3789 3790 err = init_percpu_info(sbi); 3791 if (err) 3792 goto free_bio_info; 3793 3794 if (F2FS_IO_ALIGNED(sbi)) { 3795 sbi->write_io_dummy = 3796 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0); 3797 if (!sbi->write_io_dummy) { 3798 err = -ENOMEM; 3799 goto free_percpu; 3800 } 3801 } 3802 3803 /* init per sbi slab cache */ 3804 err = f2fs_init_xattr_caches(sbi); 3805 if (err) 3806 goto free_io_dummy; 3807 err = f2fs_init_page_array_cache(sbi); 3808 if (err) 3809 goto free_xattr_cache; 3810 3811 /* get an inode for meta space */ 3812 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); 3813 if (IS_ERR(sbi->meta_inode)) { 3814 f2fs_err(sbi, "Failed to read F2FS meta data inode"); 3815 err = PTR_ERR(sbi->meta_inode); 3816 goto free_page_array_cache; 3817 } 3818 3819 err = f2fs_get_valid_checkpoint(sbi); 3820 if (err) { 3821 f2fs_err(sbi, "Failed to get valid F2FS checkpoint"); 3822 goto free_meta_inode; 3823 } 3824 3825 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_QUOTA_NEED_FSCK_FLAG)) 3826 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); 3827 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_DISABLED_QUICK_FLAG)) { 3828 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 3829 sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL; 3830 } 3831 3832 if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG)) 3833 set_sbi_flag(sbi, SBI_NEED_FSCK); 3834 3835 /* Initialize device list */ 3836 err = f2fs_scan_devices(sbi); 3837 if (err) { 3838 f2fs_err(sbi, "Failed to find devices"); 3839 goto free_devices; 3840 } 3841 3842 err = f2fs_init_post_read_wq(sbi); 3843 if (err) { 3844 f2fs_err(sbi, "Failed to initialize post read workqueue"); 3845 goto free_devices; 3846 } 3847 3848 sbi->total_valid_node_count = 3849 le32_to_cpu(sbi->ckpt->valid_node_count); 3850 percpu_counter_set(&sbi->total_valid_inode_count, 3851 le32_to_cpu(sbi->ckpt->valid_inode_count)); 3852 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); 3853 sbi->total_valid_block_count = 3854 le64_to_cpu(sbi->ckpt->valid_block_count); 3855 sbi->last_valid_block_count = sbi->total_valid_block_count; 3856 sbi->reserved_blocks = 0; 3857 sbi->current_reserved_blocks = 0; 3858 limit_reserve_root(sbi); 3859 adjust_unusable_cap_perc(sbi); 3860 3861 for (i = 0; i < NR_INODE_TYPE; i++) { 3862 INIT_LIST_HEAD(&sbi->inode_list[i]); 3863 spin_lock_init(&sbi->inode_lock[i]); 3864 } 3865 mutex_init(&sbi->flush_lock); 3866 3867 f2fs_init_extent_cache_info(sbi); 3868 3869 f2fs_init_ino_entry_info(sbi); 3870 3871 f2fs_init_fsync_node_info(sbi); 3872 3873 /* setup checkpoint request control and start checkpoint issue thread */ 3874 f2fs_init_ckpt_req_control(sbi); 3875 if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) && 3876 test_opt(sbi, MERGE_CHECKPOINT)) { 3877 err = f2fs_start_ckpt_thread(sbi); 3878 if (err) { 3879 f2fs_err(sbi, 3880 "Failed to start F2FS issue_checkpoint_thread (%d)", 3881 err); 3882 goto stop_ckpt_thread; 3883 } 3884 } 3885 3886 /* setup f2fs internal modules */ 3887 err = f2fs_build_segment_manager(sbi); 3888 if (err) { 3889 f2fs_err(sbi, "Failed to initialize F2FS segment manager (%d)", 3890 err); 3891 goto free_sm; 3892 } 3893 err = f2fs_build_node_manager(sbi); 3894 if (err) { 3895 f2fs_err(sbi, "Failed to initialize F2FS node manager (%d)", 3896 err); 3897 goto free_nm; 3898 } 3899 3900 /* For write statistics */ 3901 sbi->sectors_written_start = f2fs_get_sectors_written(sbi); 3902 3903 /* Read accumulated write IO statistics if exists */ 3904 seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 3905 if (__exist_node_summaries(sbi)) 3906 sbi->kbytes_written = 3907 le64_to_cpu(seg_i->journal->info.kbytes_written); 3908 3909 f2fs_build_gc_manager(sbi); 3910 3911 err = f2fs_build_stats(sbi); 3912 if (err) 3913 goto free_nm; 3914 3915 /* get an inode for node space */ 3916 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); 3917 if (IS_ERR(sbi->node_inode)) { 3918 f2fs_err(sbi, "Failed to read node inode"); 3919 err = PTR_ERR(sbi->node_inode); 3920 goto free_stats; 3921 } 3922 3923 /* read root inode and dentry */ 3924 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); 3925 if (IS_ERR(root)) { 3926 f2fs_err(sbi, "Failed to read root inode"); 3927 err = PTR_ERR(root); 3928 goto free_node_inode; 3929 } 3930 if (!S_ISDIR(root->i_mode) || !root->i_blocks || 3931 !root->i_size || !root->i_nlink) { 3932 iput(root); 3933 err = -EINVAL; 3934 goto free_node_inode; 3935 } 3936 3937 sb->s_root = d_make_root(root); /* allocate root dentry */ 3938 if (!sb->s_root) { 3939 err = -ENOMEM; 3940 goto free_node_inode; 3941 } 3942 3943 err = f2fs_register_sysfs(sbi); 3944 if (err) 3945 goto free_root_inode; 3946 3947 #ifdef CONFIG_QUOTA 3948 /* Enable quota usage during mount */ 3949 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) { 3950 err = f2fs_enable_quotas(sb); 3951 if (err) 3952 f2fs_err(sbi, "Cannot turn on quotas: error %d", err); 3953 } 3954 #endif 3955 /* if there are any orphan inodes, free them */ 3956 err = f2fs_recover_orphan_inodes(sbi); 3957 if (err) 3958 goto free_meta; 3959 3960 if (unlikely(is_set_ckpt_flags(sbi, CP_DISABLED_FLAG))) 3961 goto reset_checkpoint; 3962 3963 /* recover fsynced data */ 3964 if (!test_opt(sbi, DISABLE_ROLL_FORWARD) && 3965 !test_opt(sbi, NORECOVERY)) { 3966 /* 3967 * mount should be failed, when device has readonly mode, and 3968 * previous checkpoint was not done by clean system shutdown. 3969 */ 3970 if (f2fs_hw_is_readonly(sbi)) { 3971 if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 3972 err = f2fs_recover_fsync_data(sbi, true); 3973 if (err > 0) { 3974 err = -EROFS; 3975 f2fs_err(sbi, "Need to recover fsync data, but " 3976 "write access unavailable, please try " 3977 "mount w/ disable_roll_forward or norecovery"); 3978 } 3979 if (err < 0) 3980 goto free_meta; 3981 } 3982 f2fs_info(sbi, "write access unavailable, skipping recovery"); 3983 goto reset_checkpoint; 3984 } 3985 3986 if (need_fsck) 3987 set_sbi_flag(sbi, SBI_NEED_FSCK); 3988 3989 if (skip_recovery) 3990 goto reset_checkpoint; 3991 3992 err = f2fs_recover_fsync_data(sbi, false); 3993 if (err < 0) { 3994 if (err != -ENOMEM) 3995 skip_recovery = true; 3996 need_fsck = true; 3997 f2fs_err(sbi, "Cannot recover all fsync data errno=%d", 3998 err); 3999 goto free_meta; 4000 } 4001 } else { 4002 err = f2fs_recover_fsync_data(sbi, true); 4003 4004 if (!f2fs_readonly(sb) && err > 0) { 4005 err = -EINVAL; 4006 f2fs_err(sbi, "Need to recover fsync data"); 4007 goto free_meta; 4008 } 4009 } 4010 4011 /* 4012 * If the f2fs is not readonly and fsync data recovery succeeds, 4013 * check zoned block devices' write pointer consistency. 4014 */ 4015 if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) { 4016 err = f2fs_check_write_pointer(sbi); 4017 if (err) 4018 goto free_meta; 4019 } 4020 4021 reset_checkpoint: 4022 f2fs_init_inmem_curseg(sbi); 4023 4024 /* f2fs_recover_fsync_data() cleared this already */ 4025 clear_sbi_flag(sbi, SBI_POR_DOING); 4026 4027 if (test_opt(sbi, DISABLE_CHECKPOINT)) { 4028 err = f2fs_disable_checkpoint(sbi); 4029 if (err) 4030 goto sync_free_meta; 4031 } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { 4032 f2fs_enable_checkpoint(sbi); 4033 } 4034 4035 /* 4036 * If filesystem is not mounted as read-only then 4037 * do start the gc_thread. 4038 */ 4039 if ((F2FS_OPTION(sbi).bggc_mode != BGGC_MODE_OFF || 4040 test_opt(sbi, GC_MERGE)) && !f2fs_readonly(sb)) { 4041 /* After POR, we can run background GC thread.*/ 4042 err = f2fs_start_gc_thread(sbi); 4043 if (err) 4044 goto sync_free_meta; 4045 } 4046 kvfree(options); 4047 4048 /* recover broken superblock */ 4049 if (recovery) { 4050 err = f2fs_commit_super(sbi, true); 4051 f2fs_info(sbi, "Try to recover %dth superblock, ret: %d", 4052 sbi->valid_super_block ? 1 : 2, err); 4053 } 4054 4055 f2fs_join_shrinker(sbi); 4056 4057 f2fs_tuning_parameters(sbi); 4058 4059 f2fs_notice(sbi, "Mounted with checkpoint version = %llx", 4060 cur_cp_version(F2FS_CKPT(sbi))); 4061 f2fs_update_time(sbi, CP_TIME); 4062 f2fs_update_time(sbi, REQ_TIME); 4063 clear_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); 4064 return 0; 4065 4066 sync_free_meta: 4067 /* safe to flush all the data */ 4068 sync_filesystem(sbi->sb); 4069 retry_cnt = 0; 4070 4071 free_meta: 4072 #ifdef CONFIG_QUOTA 4073 f2fs_truncate_quota_inode_pages(sb); 4074 if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) 4075 f2fs_quota_off_umount(sbi->sb); 4076 #endif 4077 /* 4078 * Some dirty meta pages can be produced by f2fs_recover_orphan_inodes() 4079 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg() 4080 * followed by f2fs_write_checkpoint() through f2fs_write_node_pages(), which 4081 * falls into an infinite loop in f2fs_sync_meta_pages(). 4082 */ 4083 truncate_inode_pages_final(META_MAPPING(sbi)); 4084 /* evict some inodes being cached by GC */ 4085 evict_inodes(sb); 4086 f2fs_unregister_sysfs(sbi); 4087 free_root_inode: 4088 dput(sb->s_root); 4089 sb->s_root = NULL; 4090 free_node_inode: 4091 f2fs_release_ino_entry(sbi, true); 4092 truncate_inode_pages_final(NODE_MAPPING(sbi)); 4093 iput(sbi->node_inode); 4094 sbi->node_inode = NULL; 4095 free_stats: 4096 f2fs_destroy_stats(sbi); 4097 free_nm: 4098 f2fs_destroy_node_manager(sbi); 4099 free_sm: 4100 f2fs_destroy_segment_manager(sbi); 4101 f2fs_destroy_post_read_wq(sbi); 4102 stop_ckpt_thread: 4103 f2fs_stop_ckpt_thread(sbi); 4104 free_devices: 4105 destroy_device_list(sbi); 4106 kvfree(sbi->ckpt); 4107 free_meta_inode: 4108 make_bad_inode(sbi->meta_inode); 4109 iput(sbi->meta_inode); 4110 sbi->meta_inode = NULL; 4111 free_page_array_cache: 4112 f2fs_destroy_page_array_cache(sbi); 4113 free_xattr_cache: 4114 f2fs_destroy_xattr_caches(sbi); 4115 free_io_dummy: 4116 mempool_destroy(sbi->write_io_dummy); 4117 free_percpu: 4118 destroy_percpu_info(sbi); 4119 free_bio_info: 4120 for (i = 0; i < NR_PAGE_TYPE; i++) 4121 kvfree(sbi->write_io[i]); 4122 4123 #ifdef CONFIG_UNICODE 4124 utf8_unload(sb->s_encoding); 4125 sb->s_encoding = NULL; 4126 #endif 4127 free_options: 4128 #ifdef CONFIG_QUOTA 4129 for (i = 0; i < MAXQUOTAS; i++) 4130 kfree(F2FS_OPTION(sbi).s_qf_names[i]); 4131 #endif 4132 fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); 4133 kvfree(options); 4134 free_sb_buf: 4135 kfree(raw_super); 4136 free_sbi: 4137 if (sbi->s_chksum_driver) 4138 crypto_free_shash(sbi->s_chksum_driver); 4139 kfree(sbi); 4140 4141 /* give only one another chance */ 4142 if (retry_cnt > 0 && skip_recovery) { 4143 retry_cnt--; 4144 shrink_dcache_sb(sb); 4145 goto try_onemore; 4146 } 4147 return err; 4148 } 4149 4150 static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, 4151 const char *dev_name, void *data) 4152 { 4153 return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); 4154 } 4155 4156 static void kill_f2fs_super(struct super_block *sb) 4157 { 4158 if (sb->s_root) { 4159 struct f2fs_sb_info *sbi = F2FS_SB(sb); 4160 4161 set_sbi_flag(sbi, SBI_IS_CLOSE); 4162 f2fs_stop_gc_thread(sbi); 4163 f2fs_stop_discard_thread(sbi); 4164 4165 if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || 4166 !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { 4167 struct cp_control cpc = { 4168 .reason = CP_UMOUNT, 4169 }; 4170 f2fs_write_checkpoint(sbi, &cpc); 4171 } 4172 4173 if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) 4174 sb->s_flags &= ~SB_RDONLY; 4175 } 4176 kill_block_super(sb); 4177 } 4178 4179 static struct file_system_type f2fs_fs_type = { 4180 .owner = THIS_MODULE, 4181 .name = "f2fs", 4182 .mount = f2fs_mount, 4183 .kill_sb = kill_f2fs_super, 4184 .fs_flags = FS_REQUIRES_DEV, 4185 }; 4186 MODULE_ALIAS_FS("f2fs"); 4187 4188 static int __init init_inodecache(void) 4189 { 4190 f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", 4191 sizeof(struct f2fs_inode_info), 0, 4192 SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); 4193 if (!f2fs_inode_cachep) 4194 return -ENOMEM; 4195 return 0; 4196 } 4197 4198 static void destroy_inodecache(void) 4199 { 4200 /* 4201 * Make sure all delayed rcu free inodes are flushed before we 4202 * destroy cache. 4203 */ 4204 rcu_barrier(); 4205 kmem_cache_destroy(f2fs_inode_cachep); 4206 } 4207 4208 static int __init init_f2fs_fs(void) 4209 { 4210 int err; 4211 4212 if (PAGE_SIZE != F2FS_BLKSIZE) { 4213 printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n", 4214 PAGE_SIZE, F2FS_BLKSIZE); 4215 return -EINVAL; 4216 } 4217 4218 err = init_inodecache(); 4219 if (err) 4220 goto fail; 4221 err = f2fs_create_node_manager_caches(); 4222 if (err) 4223 goto free_inodecache; 4224 err = f2fs_create_segment_manager_caches(); 4225 if (err) 4226 goto free_node_manager_caches; 4227 err = f2fs_create_checkpoint_caches(); 4228 if (err) 4229 goto free_segment_manager_caches; 4230 err = f2fs_create_extent_cache(); 4231 if (err) 4232 goto free_checkpoint_caches; 4233 err = f2fs_create_garbage_collection_cache(); 4234 if (err) 4235 goto free_extent_cache; 4236 err = f2fs_init_sysfs(); 4237 if (err) 4238 goto free_garbage_collection_cache; 4239 err = register_shrinker(&f2fs_shrinker_info); 4240 if (err) 4241 goto free_sysfs; 4242 err = register_filesystem(&f2fs_fs_type); 4243 if (err) 4244 goto free_shrinker; 4245 f2fs_create_root_stats(); 4246 err = f2fs_init_post_read_processing(); 4247 if (err) 4248 goto free_root_stats; 4249 err = f2fs_init_bio_entry_cache(); 4250 if (err) 4251 goto free_post_read; 4252 err = f2fs_init_bioset(); 4253 if (err) 4254 goto free_bio_enrty_cache; 4255 err = f2fs_init_compress_mempool(); 4256 if (err) 4257 goto free_bioset; 4258 err = f2fs_init_compress_cache(); 4259 if (err) 4260 goto free_compress_mempool; 4261 return 0; 4262 free_compress_mempool: 4263 f2fs_destroy_compress_mempool(); 4264 free_bioset: 4265 f2fs_destroy_bioset(); 4266 free_bio_enrty_cache: 4267 f2fs_destroy_bio_entry_cache(); 4268 free_post_read: 4269 f2fs_destroy_post_read_processing(); 4270 free_root_stats: 4271 f2fs_destroy_root_stats(); 4272 unregister_filesystem(&f2fs_fs_type); 4273 free_shrinker: 4274 unregister_shrinker(&f2fs_shrinker_info); 4275 free_sysfs: 4276 f2fs_exit_sysfs(); 4277 free_garbage_collection_cache: 4278 f2fs_destroy_garbage_collection_cache(); 4279 free_extent_cache: 4280 f2fs_destroy_extent_cache(); 4281 free_checkpoint_caches: 4282 f2fs_destroy_checkpoint_caches(); 4283 free_segment_manager_caches: 4284 f2fs_destroy_segment_manager_caches(); 4285 free_node_manager_caches: 4286 f2fs_destroy_node_manager_caches(); 4287 free_inodecache: 4288 destroy_inodecache(); 4289 fail: 4290 return err; 4291 } 4292 4293 static void __exit exit_f2fs_fs(void) 4294 { 4295 f2fs_destroy_compress_cache(); 4296 f2fs_destroy_compress_mempool(); 4297 f2fs_destroy_bioset(); 4298 f2fs_destroy_bio_entry_cache(); 4299 f2fs_destroy_post_read_processing(); 4300 f2fs_destroy_root_stats(); 4301 unregister_filesystem(&f2fs_fs_type); 4302 unregister_shrinker(&f2fs_shrinker_info); 4303 f2fs_exit_sysfs(); 4304 f2fs_destroy_garbage_collection_cache(); 4305 f2fs_destroy_extent_cache(); 4306 f2fs_destroy_checkpoint_caches(); 4307 f2fs_destroy_segment_manager_caches(); 4308 f2fs_destroy_node_manager_caches(); 4309 destroy_inodecache(); 4310 } 4311 4312 module_init(init_f2fs_fs) 4313 module_exit(exit_f2fs_fs) 4314 4315 MODULE_AUTHOR("Samsung Electronics's Praesto Team"); 4316 MODULE_DESCRIPTION("Flash Friendly File System"); 4317 MODULE_LICENSE("GPL"); 4318 4319