super.c (ad2e6329666650d9cafcae9ef53fbe09ea759ae2) super.c (6e6093a8f144414d904575da5fdea40cf14fb63e)
1/*
2 * fs/f2fs/super.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

--- 39 unchanged lines hidden (view full) ---

48 {Opt_noheap, "no_heap"},
49 {Opt_nouser_xattr, "nouser_xattr"},
50 {Opt_noacl, "noacl"},
51 {Opt_active_logs, "active_logs=%u"},
52 {Opt_disable_ext_identify, "disable_ext_identify"},
53 {Opt_err, NULL},
54};
55
1/*
2 * fs/f2fs/super.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

--- 39 unchanged lines hidden (view full) ---

48 {Opt_noheap, "no_heap"},
49 {Opt_nouser_xattr, "nouser_xattr"},
50 {Opt_noacl, "noacl"},
51 {Opt_active_logs, "active_logs=%u"},
52 {Opt_disable_ext_identify, "disable_ext_identify"},
53 {Opt_err, NULL},
54};
55
56void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...)
57{
58 struct va_format vaf;
59 va_list args;
60
61 va_start(args, fmt);
62 vaf.fmt = fmt;
63 vaf.va = &args;
64 printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf);
65 va_end(args);
66}
67
56static void init_once(void *foo)
57{
58 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
59
60 inode_init_once(&fi->vfs_inode);
61}
62
63static struct inode *f2fs_alloc_inode(struct super_block *sb)

--- 56 unchanged lines hidden (view full) ---

120{
121 struct f2fs_sb_info *sbi = F2FS_SB(sb);
122
123 if (!sbi->s_dirty && !get_pages(sbi, F2FS_DIRTY_NODES))
124 return 0;
125
126 if (sync)
127 write_checkpoint(sbi, false, false);
68static void init_once(void *foo)
69{
70 struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
71
72 inode_init_once(&fi->vfs_inode);
73}
74
75static struct inode *f2fs_alloc_inode(struct super_block *sb)

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132{
133 struct f2fs_sb_info *sbi = F2FS_SB(sb);
134
135 if (!sbi->s_dirty && !get_pages(sbi, F2FS_DIRTY_NODES))
136 return 0;
137
138 if (sync)
139 write_checkpoint(sbi, false, false);
140 else
141 f2fs_balance_fs(sbi);
128
129 return 0;
130}
131
132static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
133{
134 struct super_block *sb = dentry->d_sb;
135 struct f2fs_sb_info *sbi = F2FS_SB(sb);

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242}
243
244static const struct export_operations f2fs_export_ops = {
245 .fh_to_dentry = f2fs_fh_to_dentry,
246 .fh_to_parent = f2fs_fh_to_parent,
247 .get_parent = f2fs_get_parent,
248};
249
142
143 return 0;
144}
145
146static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
147{
148 struct super_block *sb = dentry->d_sb;
149 struct f2fs_sb_info *sbi = F2FS_SB(sb);

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256}
257
258static const struct export_operations f2fs_export_ops = {
259 .fh_to_dentry = f2fs_fh_to_dentry,
260 .fh_to_parent = f2fs_fh_to_parent,
261 .get_parent = f2fs_get_parent,
262};
263
250static int parse_options(struct f2fs_sb_info *sbi, char *options)
264static int parse_options(struct super_block *sb, struct f2fs_sb_info *sbi,
265 char *options)
251{
252 substring_t args[MAX_OPT_ARGS];
253 char *p;
254 int arg = 0;
255
256 if (!options)
257 return 0;
258

--- 22 unchanged lines hidden (view full) ---

281 set_opt(sbi, NOHEAP);
282 break;
283#ifdef CONFIG_F2FS_FS_XATTR
284 case Opt_nouser_xattr:
285 clear_opt(sbi, XATTR_USER);
286 break;
287#else
288 case Opt_nouser_xattr:
266{
267 substring_t args[MAX_OPT_ARGS];
268 char *p;
269 int arg = 0;
270
271 if (!options)
272 return 0;
273

--- 22 unchanged lines hidden (view full) ---

296 set_opt(sbi, NOHEAP);
297 break;
298#ifdef CONFIG_F2FS_FS_XATTR
299 case Opt_nouser_xattr:
300 clear_opt(sbi, XATTR_USER);
301 break;
302#else
303 case Opt_nouser_xattr:
289 pr_info("nouser_xattr options not supported\n");
304 f2fs_msg(sb, KERN_INFO,
305 "nouser_xattr options not supported");
290 break;
291#endif
292#ifdef CONFIG_F2FS_FS_POSIX_ACL
293 case Opt_noacl:
294 clear_opt(sbi, POSIX_ACL);
295 break;
296#else
297 case Opt_noacl:
306 break;
307#endif
308#ifdef CONFIG_F2FS_FS_POSIX_ACL
309 case Opt_noacl:
310 clear_opt(sbi, POSIX_ACL);
311 break;
312#else
313 case Opt_noacl:
298 pr_info("noacl options not supported\n");
314 f2fs_msg(sb, KERN_INFO, "noacl options not supported");
299 break;
300#endif
301 case Opt_active_logs:
302 if (args->from && match_int(args, &arg))
303 return -EINVAL;
304 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
305 return -EINVAL;
306 sbi->active_logs = arg;
307 break;
308 case Opt_disable_ext_identify:
309 set_opt(sbi, DISABLE_EXT_IDENTIFY);
310 break;
311 default:
315 break;
316#endif
317 case Opt_active_logs:
318 if (args->from && match_int(args, &arg))
319 return -EINVAL;
320 if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
321 return -EINVAL;
322 sbi->active_logs = arg;
323 break;
324 case Opt_disable_ext_identify:
325 set_opt(sbi, DISABLE_EXT_IDENTIFY);
326 break;
327 default:
312 pr_err("Unrecognized mount option \"%s\" or missing value\n",
313 p);
328 f2fs_msg(sb, KERN_ERR,
329 "Unrecognized mount option \"%s\" or missing value",
330 p);
314 return -EINVAL;
315 }
316 }
317 return 0;
318}
319
320static loff_t max_file_size(unsigned bits)
321{

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332 /* one double indirect node block */
333 leaf_count *= NIDS_PER_BLOCK;
334 result += leaf_count;
335
336 result <<= bits;
337 return result;
338}
339
331 return -EINVAL;
332 }
333 }
334 return 0;
335}
336
337static loff_t max_file_size(unsigned bits)
338{

--- 10 unchanged lines hidden (view full) ---

349 /* one double indirect node block */
350 leaf_count *= NIDS_PER_BLOCK;
351 result += leaf_count;
352
353 result <<= bits;
354 return result;
355}
356
340static int sanity_check_raw_super(struct f2fs_super_block *raw_super)
357static int sanity_check_raw_super(struct super_block *sb,
358 struct f2fs_super_block *raw_super)
341{
342 unsigned int blocksize;
343
359{
360 unsigned int blocksize;
361
344 if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic))
362 if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) {
363 f2fs_msg(sb, KERN_INFO,
364 "Magic Mismatch, valid(0x%x) - read(0x%x)",
365 F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
345 return 1;
366 return 1;
367 }
346
347 /* Currently, support only 4KB block size */
348 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
368
369 /* Currently, support only 4KB block size */
370 blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
349 if (blocksize != PAGE_CACHE_SIZE)
371 if (blocksize != PAGE_CACHE_SIZE) {
372 f2fs_msg(sb, KERN_INFO,
373 "Invalid blocksize (%u), supports only 4KB\n",
374 blocksize);
350 return 1;
375 return 1;
376 }
351 if (le32_to_cpu(raw_super->log_sectorsize) !=
377 if (le32_to_cpu(raw_super->log_sectorsize) !=
352 F2FS_LOG_SECTOR_SIZE)
378 F2FS_LOG_SECTOR_SIZE) {
379 f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize");
353 return 1;
380 return 1;
381 }
354 if (le32_to_cpu(raw_super->log_sectors_per_block) !=
382 if (le32_to_cpu(raw_super->log_sectors_per_block) !=
355 F2FS_LOG_SECTORS_PER_BLOCK)
383 F2FS_LOG_SECTORS_PER_BLOCK) {
384 f2fs_msg(sb, KERN_INFO, "Invalid log sectors per block");
356 return 1;
385 return 1;
386 }
357 return 0;
358}
359
360static int sanity_check_ckpt(struct f2fs_super_block *raw_super,
361 struct f2fs_checkpoint *ckpt)
362{
363 unsigned int total, fsmeta;
364

--- 43 unchanged lines hidden (view full) ---

408 long err = -EINVAL;
409 int i;
410
411 /* allocate memory for f2fs-specific super block info */
412 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
413 if (!sbi)
414 return -ENOMEM;
415
387 return 0;
388}
389
390static int sanity_check_ckpt(struct f2fs_super_block *raw_super,
391 struct f2fs_checkpoint *ckpt)
392{
393 unsigned int total, fsmeta;
394

--- 43 unchanged lines hidden (view full) ---

438 long err = -EINVAL;
439 int i;
440
441 /* allocate memory for f2fs-specific super block info */
442 sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
443 if (!sbi)
444 return -ENOMEM;
445
416 /* set a temporary block size */
417 if (!sb_set_blocksize(sb, F2FS_BLKSIZE))
446 /* set a block size */
447 if (!sb_set_blocksize(sb, F2FS_BLKSIZE)) {
448 f2fs_msg(sb, KERN_ERR, "unable to set blocksize");
418 goto free_sbi;
449 goto free_sbi;
450 }
419
420 /* read f2fs raw super block */
421 raw_super_buf = sb_bread(sb, 0);
422 if (!raw_super_buf) {
423 err = -EIO;
451
452 /* read f2fs raw super block */
453 raw_super_buf = sb_bread(sb, 0);
454 if (!raw_super_buf) {
455 err = -EIO;
456 f2fs_msg(sb, KERN_ERR, "unable to read superblock");
424 goto free_sbi;
425 }
426 raw_super = (struct f2fs_super_block *)
427 ((char *)raw_super_buf->b_data + F2FS_SUPER_OFFSET);
428
429 /* init some FS parameters */
430 sbi->active_logs = NR_CURSEG_TYPE;
431
432 set_opt(sbi, BG_GC);
433
434#ifdef CONFIG_F2FS_FS_XATTR
435 set_opt(sbi, XATTR_USER);
436#endif
437#ifdef CONFIG_F2FS_FS_POSIX_ACL
438 set_opt(sbi, POSIX_ACL);
439#endif
440 /* parse mount options */
457 goto free_sbi;
458 }
459 raw_super = (struct f2fs_super_block *)
460 ((char *)raw_super_buf->b_data + F2FS_SUPER_OFFSET);
461
462 /* init some FS parameters */
463 sbi->active_logs = NR_CURSEG_TYPE;
464
465 set_opt(sbi, BG_GC);
466
467#ifdef CONFIG_F2FS_FS_XATTR
468 set_opt(sbi, XATTR_USER);
469#endif
470#ifdef CONFIG_F2FS_FS_POSIX_ACL
471 set_opt(sbi, POSIX_ACL);
472#endif
473 /* parse mount options */
441 if (parse_options(sbi, (char *)data))
474 if (parse_options(sb, sbi, (char *)data))
442 goto free_sb_buf;
443
444 /* sanity checking of raw super */
475 goto free_sb_buf;
476
477 /* sanity checking of raw super */
445 if (sanity_check_raw_super(raw_super))
478 if (sanity_check_raw_super(sb, raw_super)) {
479 f2fs_msg(sb, KERN_ERR, "Can't find a valid F2FS filesystem");
446 goto free_sb_buf;
480 goto free_sb_buf;
481 }
447
448 sb->s_maxbytes = max_file_size(le32_to_cpu(raw_super->log_blocksize));
449 sb->s_max_links = F2FS_LINK_MAX;
450 get_random_bytes(&sbi->s_next_generation, sizeof(u32));
451
452 sb->s_op = &f2fs_sops;
453 sb->s_xattr = f2fs_xattr_handlers;
454 sb->s_export_op = &f2fs_export_ops;

--- 17 unchanged lines hidden (view full) ---

472 sbi->por_doing = 0;
473 spin_lock_init(&sbi->stat_lock);
474 init_rwsem(&sbi->bio_sem);
475 init_sb_info(sbi);
476
477 /* get an inode for meta space */
478 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
479 if (IS_ERR(sbi->meta_inode)) {
482
483 sb->s_maxbytes = max_file_size(le32_to_cpu(raw_super->log_blocksize));
484 sb->s_max_links = F2FS_LINK_MAX;
485 get_random_bytes(&sbi->s_next_generation, sizeof(u32));
486
487 sb->s_op = &f2fs_sops;
488 sb->s_xattr = f2fs_xattr_handlers;
489 sb->s_export_op = &f2fs_export_ops;

--- 17 unchanged lines hidden (view full) ---

507 sbi->por_doing = 0;
508 spin_lock_init(&sbi->stat_lock);
509 init_rwsem(&sbi->bio_sem);
510 init_sb_info(sbi);
511
512 /* get an inode for meta space */
513 sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
514 if (IS_ERR(sbi->meta_inode)) {
515 f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode");
480 err = PTR_ERR(sbi->meta_inode);
481 goto free_sb_buf;
482 }
483
484 err = get_valid_checkpoint(sbi);
516 err = PTR_ERR(sbi->meta_inode);
517 goto free_sb_buf;
518 }
519
520 err = get_valid_checkpoint(sbi);
485 if (err)
521 if (err) {
522 f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint");
486 goto free_meta_inode;
523 goto free_meta_inode;
524 }
487
488 /* sanity checking of checkpoint */
489 err = -EINVAL;
525
526 /* sanity checking of checkpoint */
527 err = -EINVAL;
490 if (sanity_check_ckpt(raw_super, sbi->ckpt))
528 if (sanity_check_ckpt(raw_super, sbi->ckpt)) {
529 f2fs_msg(sb, KERN_ERR, "Invalid F2FS checkpoint");
491 goto free_cp;
530 goto free_cp;
531 }
492
493 sbi->total_valid_node_count =
494 le32_to_cpu(sbi->ckpt->valid_node_count);
495 sbi->total_valid_inode_count =
496 le32_to_cpu(sbi->ckpt->valid_inode_count);
497 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
498 sbi->total_valid_block_count =
499 le64_to_cpu(sbi->ckpt->valid_block_count);
500 sbi->last_valid_block_count = sbi->total_valid_block_count;
501 sbi->alloc_valid_block_count = 0;
502 INIT_LIST_HEAD(&sbi->dir_inode_list);
503 spin_lock_init(&sbi->dir_inode_lock);
504
532
533 sbi->total_valid_node_count =
534 le32_to_cpu(sbi->ckpt->valid_node_count);
535 sbi->total_valid_inode_count =
536 le32_to_cpu(sbi->ckpt->valid_inode_count);
537 sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count);
538 sbi->total_valid_block_count =
539 le64_to_cpu(sbi->ckpt->valid_block_count);
540 sbi->last_valid_block_count = sbi->total_valid_block_count;
541 sbi->alloc_valid_block_count = 0;
542 INIT_LIST_HEAD(&sbi->dir_inode_list);
543 spin_lock_init(&sbi->dir_inode_lock);
544
505 /* init super block */
506 if (!sb_set_blocksize(sb, sbi->blocksize))
507 goto free_cp;
508
509 init_orphan_info(sbi);
510
511 /* setup f2fs internal modules */
512 err = build_segment_manager(sbi);
545 init_orphan_info(sbi);
546
547 /* setup f2fs internal modules */
548 err = build_segment_manager(sbi);
513 if (err)
549 if (err) {
550 f2fs_msg(sb, KERN_ERR,
551 "Failed to initialize F2FS segment manager");
514 goto free_sm;
552 goto free_sm;
553 }
515 err = build_node_manager(sbi);
554 err = build_node_manager(sbi);
516 if (err)
555 if (err) {
556 f2fs_msg(sb, KERN_ERR,
557 "Failed to initialize F2FS node manager");
517 goto free_nm;
558 goto free_nm;
559 }
518
519 build_gc_manager(sbi);
520
521 /* get an inode for node space */
522 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
523 if (IS_ERR(sbi->node_inode)) {
560
561 build_gc_manager(sbi);
562
563 /* get an inode for node space */
564 sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
565 if (IS_ERR(sbi->node_inode)) {
566 f2fs_msg(sb, KERN_ERR, "Failed to read node inode");
524 err = PTR_ERR(sbi->node_inode);
525 goto free_nm;
526 }
527
528 /* if there are nt orphan nodes free them */
529 err = -EINVAL;
530 if (recover_orphan_inodes(sbi))
531 goto free_node_inode;
532
533 /* read root inode and dentry */
534 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
535 if (IS_ERR(root)) {
567 err = PTR_ERR(sbi->node_inode);
568 goto free_nm;
569 }
570
571 /* if there are nt orphan nodes free them */
572 err = -EINVAL;
573 if (recover_orphan_inodes(sbi))
574 goto free_node_inode;
575
576 /* read root inode and dentry */
577 root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
578 if (IS_ERR(root)) {
579 f2fs_msg(sb, KERN_ERR, "Failed to read root inode");
536 err = PTR_ERR(root);
537 goto free_node_inode;
538 }
539 if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size)
540 goto free_root_inode;
541
542 sb->s_root = d_make_root(root); /* allocate root dentry */
543 if (!sb->s_root) {

--- 47 unchanged lines hidden (view full) ---

591static struct file_system_type f2fs_fs_type = {
592 .owner = THIS_MODULE,
593 .name = "f2fs",
594 .mount = f2fs_mount,
595 .kill_sb = kill_block_super,
596 .fs_flags = FS_REQUIRES_DEV,
597};
598
580 err = PTR_ERR(root);
581 goto free_node_inode;
582 }
583 if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size)
584 goto free_root_inode;
585
586 sb->s_root = d_make_root(root); /* allocate root dentry */
587 if (!sb->s_root) {

--- 47 unchanged lines hidden (view full) ---

635static struct file_system_type f2fs_fs_type = {
636 .owner = THIS_MODULE,
637 .name = "f2fs",
638 .mount = f2fs_mount,
639 .kill_sb = kill_block_super,
640 .fs_flags = FS_REQUIRES_DEV,
641};
642
599static int init_inodecache(void)
643static int __init init_inodecache(void)
600{
601 f2fs_inode_cachep = f2fs_kmem_cache_create("f2fs_inode_cache",
602 sizeof(struct f2fs_inode_info), NULL);
603 if (f2fs_inode_cachep == NULL)
604 return -ENOMEM;
605 return 0;
606}
607

--- 18 unchanged lines hidden (view full) ---

626 if (err)
627 goto fail;
628 err = create_gc_caches();
629 if (err)
630 goto fail;
631 err = create_checkpoint_caches();
632 if (err)
633 goto fail;
644{
645 f2fs_inode_cachep = f2fs_kmem_cache_create("f2fs_inode_cache",
646 sizeof(struct f2fs_inode_info), NULL);
647 if (f2fs_inode_cachep == NULL)
648 return -ENOMEM;
649 return 0;
650}
651

--- 18 unchanged lines hidden (view full) ---

670 if (err)
671 goto fail;
672 err = create_gc_caches();
673 if (err)
674 goto fail;
675 err = create_checkpoint_caches();
676 if (err)
677 goto fail;
634 return register_filesystem(&f2fs_fs_type);
678 err = register_filesystem(&f2fs_fs_type);
679 if (err)
680 goto fail;
681 f2fs_create_root_stats();
635fail:
636 return err;
637}
638
639static void __exit exit_f2fs_fs(void)
640{
682fail:
683 return err;
684}
685
686static void __exit exit_f2fs_fs(void)
687{
641 destroy_root_stats();
688 f2fs_destroy_root_stats();
642 unregister_filesystem(&f2fs_fs_type);
643 destroy_checkpoint_caches();
644 destroy_gc_caches();
645 destroy_node_manager_caches();
646 destroy_inodecache();
647}
648
649module_init(init_f2fs_fs)
650module_exit(exit_f2fs_fs)
651
652MODULE_AUTHOR("Samsung Electronics's Praesto Team");
653MODULE_DESCRIPTION("Flash Friendly File System");
654MODULE_LICENSE("GPL");
689 unregister_filesystem(&f2fs_fs_type);
690 destroy_checkpoint_caches();
691 destroy_gc_caches();
692 destroy_node_manager_caches();
693 destroy_inodecache();
694}
695
696module_init(init_f2fs_fs)
697module_exit(exit_f2fs_fs)
698
699MODULE_AUTHOR("Samsung Electronics's Praesto Team");
700MODULE_DESCRIPTION("Flash Friendly File System");
701MODULE_LICENSE("GPL");