Lines Matching +full:page +full:- +full:level
1 // SPDX-License-Identifier: GPL-2.0
25 return ((unsigned long long) (i_size_read(inode) + PAGE_SIZE - 1)) in dir_blocks()
29 static unsigned int dir_buckets(unsigned int level, int dir_level) in dir_buckets() argument
31 if (level + dir_level < MAX_DIR_HASH_DEPTH / 2) in dir_buckets()
32 return BIT(level + dir_level); in dir_buckets()
37 static unsigned int bucket_blocks(unsigned int level) in bucket_blocks() argument
39 if (level < MAX_DIR_HASH_DEPTH / 2) in bucket_blocks()
45 /* If @dir is casefolded, initialize @fname->cf_name from @fname->usr_fname. */
50 struct super_block *sb = dir->i_sb; in f2fs_init_casefolded_name()
53 !is_dot_dotdot(fname->usr_fname->name, fname->usr_fname->len)) { in f2fs_init_casefolded_name()
54 fname->cf_name.name = f2fs_kmem_cache_alloc(f2fs_cf_name_slab, in f2fs_init_casefolded_name()
56 if (!fname->cf_name.name) in f2fs_init_casefolded_name()
57 return -ENOMEM; in f2fs_init_casefolded_name()
58 fname->cf_name.len = utf8_casefold(sb->s_encoding, in f2fs_init_casefolded_name()
59 fname->usr_fname, in f2fs_init_casefolded_name()
60 fname->cf_name.name, in f2fs_init_casefolded_name()
62 if ((int)fname->cf_name.len <= 0) { in f2fs_init_casefolded_name()
63 kmem_cache_free(f2fs_cf_name_slab, fname->cf_name.name); in f2fs_init_casefolded_name()
64 fname->cf_name.name = NULL; in f2fs_init_casefolded_name()
66 return -EINVAL; in f2fs_init_casefolded_name()
82 fname->usr_fname = crypt_name->usr_fname; in __f2fs_setup_filename()
83 fname->disk_name = crypt_name->disk_name; in __f2fs_setup_filename()
85 fname->crypto_buf = crypt_name->crypto_buf; in __f2fs_setup_filename()
87 if (crypt_name->is_nokey_name) { in __f2fs_setup_filename()
88 /* hash was decoded from the no-key name */ in __f2fs_setup_filename()
89 fname->hash = cpu_to_le32(crypt_name->hash); in __f2fs_setup_filename()
142 kfree(fname->crypto_buf.name); in f2fs_free_filename()
143 fname->crypto_buf.name = NULL; in f2fs_free_filename()
146 if (fname->cf_name.name) { in f2fs_free_filename()
147 kmem_cache_free(f2fs_cf_name_slab, fname->cf_name.name); in f2fs_free_filename()
148 fname->cf_name.name = NULL; in f2fs_free_filename()
153 static unsigned long dir_block_index(unsigned int level, in dir_block_index() argument
159 for (i = 0; i < level; i++) in dir_block_index()
162 bidx += idx * bucket_blocks(level); in dir_block_index()
167 struct page *dentry_page, in find_in_block()
183 * Test whether a case-insensitive directory entry matches the filename
186 * Returns 1 for a match, 0 for no match, and -errno on an error.
191 const struct super_block *sb = dir->i_sb; in f2fs_match_ci_name()
192 const struct unicode_map *um = sb->s_encoding; in f2fs_match_ci_name()
202 return -EINVAL; in f2fs_match_ci_name()
206 return -ENOMEM; in f2fs_match_ci_name()
217 * In strict mode, ignore invalid names. In non-strict mode, in f2fs_match_ci_name()
221 res = name->len == entry.len && in f2fs_match_ci_name()
222 memcmp(name->name, entry.name, name->len) == 0; in f2fs_match_ci_name()
240 if (fname->cf_name.name) { in f2fs_match_name()
241 struct qstr cf = FSTR_TO_QSTR(&fname->cf_name); in f2fs_match_name()
246 f.usr_fname = fname->usr_fname; in f2fs_match_name()
247 f.disk_name = fname->disk_name; in f2fs_match_name()
249 f.crypto_buf = fname->crypto_buf; in f2fs_match_name()
265 while (bit_pos < d->max) { in f2fs_find_target_dentry()
266 if (!test_bit_le(bit_pos, d->bitmap)) { in f2fs_find_target_dentry()
272 de = &d->dentry[bit_pos]; in f2fs_find_target_dentry()
274 if (unlikely(!de->name_len)) { in f2fs_find_target_dentry()
279 if (!use_hash || de->hash_code == fname->hash) { in f2fs_find_target_dentry()
280 res = f2fs_match_name(d->inode, fname, in f2fs_find_target_dentry()
281 d->filename[bit_pos], in f2fs_find_target_dentry()
282 le16_to_cpu(de->name_len)); in f2fs_find_target_dentry()
293 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); in f2fs_find_target_dentry()
304 unsigned int level, in find_in_level() argument
306 struct page **res_page, in find_in_level()
309 int s = GET_DENTRY_SLOTS(fname->disk_name.len); in find_in_level()
312 struct page *dentry_page; in find_in_level()
318 nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level); in find_in_level()
319 nblock = bucket_blocks(level); in find_in_level()
321 bucket_no = use_hash ? le32_to_cpu(fname->hash) % nbucket : 0; in find_in_level()
324 bidx = dir_block_index(level, F2FS_I(dir)->i_dir_level, in find_in_level()
332 if (PTR_ERR(dentry_page) == -ENOENT) { in find_in_level()
363 if (room && F2FS_I(dir)->chash != fname->hash) { in find_in_level()
364 F2FS_I(dir)->chash = fname->hash; in find_in_level()
365 F2FS_I(dir)->clevel = level; in find_in_level()
375 struct page **res_page) in __f2fs_find_entry()
380 unsigned int level; in __f2fs_find_entry() local
396 max_depth = F2FS_I(dir)->i_current_depth; in __f2fs_find_entry()
399 dir->i_ino, max_depth); in __f2fs_find_entry()
404 for (level = 0; level < max_depth; level++) { in __f2fs_find_entry()
405 de = find_in_level(dir, level, fname, res_page, use_hash); in __f2fs_find_entry()
419 F2FS_I(dir)->task = current; in __f2fs_find_entry()
425 * It returns the page where the entry was found (as a parameter - res_page),
426 * and the entry itself. Page is returned mapped and unlocked.
430 const struct qstr *child, struct page **res_page) in f2fs_find_entry()
438 if (err == -ENOENT) in f2fs_find_entry()
451 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p) in f2fs_parent_dir()
457 struct page **page) in f2fs_inode_by_name() argument
462 de = f2fs_find_entry(dir, qstr, page); in f2fs_inode_by_name()
464 res = le32_to_cpu(de->ino); in f2fs_inode_by_name()
465 f2fs_put_page(*page, 0); in f2fs_inode_by_name()
472 struct page *page, struct inode *inode) in f2fs_set_link() argument
476 lock_page(page); in f2fs_set_link()
477 f2fs_wait_on_page_writeback(page, type, true, true); in f2fs_set_link()
478 de->ino = cpu_to_le32(inode->i_ino); in f2fs_set_link()
479 de->file_type = fs_umode_to_ftype(inode->i_mode); in f2fs_set_link()
480 set_page_dirty(page); in f2fs_set_link()
482 dir->i_mtime = inode_set_ctime_current(dir); in f2fs_set_link()
484 f2fs_put_page(page, 1); in f2fs_set_link()
489 struct page *ipage) in init_dent_inode()
498 /* copy name info. to this inode page */ in init_dent_inode()
500 ri->i_namelen = cpu_to_le32(fname->disk_name.len); in init_dent_inode()
501 memcpy(ri->i_name, fname->disk_name.name, fname->disk_name.len); in init_dent_inode()
505 * Roll-forward recovery doesn't have encryption keys available, in init_dent_inode()
508 * roll-forward recovery of the dentry (i.e., make fsync'ing the in init_dent_inode()
512 if (fname->disk_name.len + sizeof(f2fs_hash_t) <= in init_dent_inode()
514 put_unaligned(fname->hash, (f2fs_hash_t *) in init_dent_inode()
515 &ri->i_name[fname->disk_name.len]); in init_dent_inode()
530 f2fs_update_dentry(inode->i_ino, inode->i_mode, d, &dot, 0, 0); in f2fs_do_make_empty_dir()
533 f2fs_update_dentry(parent->i_ino, parent->i_mode, d, &dotdot, 0, 1); in f2fs_do_make_empty_dir()
537 struct inode *parent, struct page *page) in make_empty_dir() argument
539 struct page *dentry_page; in make_empty_dir()
544 return f2fs_make_empty_inline_dir(inode, parent, page); in make_empty_dir()
546 dentry_page = f2fs_get_new_data_page(inode, page, 0, true); in make_empty_dir()
560 struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir, in f2fs_init_inode_metadata()
561 const struct f2fs_filename *fname, struct page *dpage) in f2fs_init_inode_metadata()
563 struct page *page; in f2fs_init_inode_metadata() local
567 page = f2fs_new_inode_page(inode); in f2fs_init_inode_metadata()
568 if (IS_ERR(page)) in f2fs_init_inode_metadata()
569 return page; in f2fs_init_inode_metadata()
571 if (S_ISDIR(inode->i_mode)) { in f2fs_init_inode_metadata()
573 get_page(page); in f2fs_init_inode_metadata()
574 err = make_empty_dir(inode, dir, page); in f2fs_init_inode_metadata()
576 lock_page(page); in f2fs_init_inode_metadata()
579 put_page(page); in f2fs_init_inode_metadata()
582 err = f2fs_init_acl(inode, dir, page, dpage); in f2fs_init_inode_metadata()
587 fname ? fname->usr_fname : NULL, page); in f2fs_init_inode_metadata()
592 err = fscrypt_set_context(inode, page); in f2fs_init_inode_metadata()
597 page = f2fs_get_node_page(F2FS_I_SB(dir), inode->i_ino); in f2fs_init_inode_metadata()
598 if (IS_ERR(page)) in f2fs_init_inode_metadata()
599 return page; in f2fs_init_inode_metadata()
602 init_dent_inode(dir, inode, fname, page); in f2fs_init_inode_metadata()
609 if (!S_ISDIR(inode->i_mode)) in f2fs_init_inode_metadata()
615 if (inode->i_nlink == 0) in f2fs_init_inode_metadata()
616 f2fs_remove_orphan_inode(F2FS_I_SB(dir), inode->i_ino); in f2fs_init_inode_metadata()
619 return page; in f2fs_init_inode_metadata()
623 f2fs_update_inode(inode, page); in f2fs_init_inode_metadata()
624 f2fs_put_page(page, 1); in f2fs_init_inode_metadata()
632 if (S_ISDIR(inode->i_mode)) in f2fs_update_parent_metadata()
636 dir->i_mtime = inode_set_ctime_current(dir); in f2fs_update_parent_metadata()
639 if (F2FS_I(dir)->i_current_depth != current_depth) in f2fs_update_parent_metadata()
656 if (zero_end - zero_start >= slots) in f2fs_room_for_filename()
666 bool f2fs_has_enough_room(struct inode *dir, struct page *ipage, in f2fs_has_enough_room()
671 int slots = GET_DENTRY_SLOTS(fname->disk_name.len); in f2fs_has_enough_room()
685 int slots = GET_DENTRY_SLOTS(name->len); in f2fs_update_dentry()
688 de = &d->dentry[bit_pos]; in f2fs_update_dentry()
689 de->hash_code = name_hash; in f2fs_update_dentry()
690 de->name_len = cpu_to_le16(name->len); in f2fs_update_dentry()
691 memcpy(d->filename[bit_pos], name->name, name->len); in f2fs_update_dentry()
692 de->ino = cpu_to_le32(ino); in f2fs_update_dentry()
693 de->file_type = fs_umode_to_ftype(mode); in f2fs_update_dentry()
695 __set_bit_le(bit_pos + i, (void *)d->bitmap); in f2fs_update_dentry()
698 (de + i)->name_len = 0; in f2fs_update_dentry()
706 unsigned int level; in f2fs_add_regular_entry() local
710 struct page *dentry_page = NULL; in f2fs_add_regular_entry()
713 struct page *page = NULL; in f2fs_add_regular_entry() local
716 level = 0; in f2fs_add_regular_entry()
717 slots = GET_DENTRY_SLOTS(fname->disk_name.len); in f2fs_add_regular_entry()
719 current_depth = F2FS_I(dir)->i_current_depth; in f2fs_add_regular_entry()
720 if (F2FS_I(dir)->chash == fname->hash) { in f2fs_add_regular_entry()
721 level = F2FS_I(dir)->clevel; in f2fs_add_regular_entry()
722 F2FS_I(dir)->chash = 0; in f2fs_add_regular_entry()
727 return -ENOSPC; in f2fs_add_regular_entry()
730 return -ENOSPC; in f2fs_add_regular_entry()
733 if (level == current_depth) in f2fs_add_regular_entry()
736 nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level); in f2fs_add_regular_entry()
737 nblock = bucket_blocks(level); in f2fs_add_regular_entry()
739 bidx = dir_block_index(level, F2FS_I(dir)->i_dir_level, in f2fs_add_regular_entry()
740 (le32_to_cpu(fname->hash) % nbucket)); in f2fs_add_regular_entry()
742 for (block = bidx; block <= (bidx + nblock - 1); block++) { in f2fs_add_regular_entry()
748 bit_pos = f2fs_room_for_filename(&dentry_blk->dentry_bitmap, in f2fs_add_regular_entry()
756 /* Move to next level to find the empty slot for new dentry */ in f2fs_add_regular_entry()
757 ++level; in f2fs_add_regular_entry()
763 f2fs_down_write(&F2FS_I(inode)->i_sem); in f2fs_add_regular_entry()
764 page = f2fs_init_inode_metadata(inode, dir, fname, NULL); in f2fs_add_regular_entry()
765 if (IS_ERR(page)) { in f2fs_add_regular_entry()
766 err = PTR_ERR(page); in f2fs_add_regular_entry()
772 f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash, in f2fs_add_regular_entry()
778 f2fs_i_pino_write(inode, dir->i_ino); in f2fs_add_regular_entry()
780 /* synchronize inode page's data from inode cache */ in f2fs_add_regular_entry()
782 f2fs_update_inode(inode, page); in f2fs_add_regular_entry()
784 f2fs_put_page(page, 1); in f2fs_add_regular_entry()
790 f2fs_up_write(&F2FS_I(inode)->i_sem); in f2fs_add_regular_entry()
800 int err = -EAGAIN; in f2fs_add_dentry()
805 * i_xattr_sem -> inode_page lock used by f2fs_setxattr. in f2fs_add_dentry()
807 f2fs_down_read(&F2FS_I(dir)->i_xattr_sem); in f2fs_add_dentry()
809 f2fs_up_read(&F2FS_I(dir)->i_xattr_sem); in f2fs_add_dentry()
811 if (err == -EAGAIN) in f2fs_add_dentry()
826 struct page *page = NULL; in f2fs_do_add_link() local
838 * verify on-disk dentry one more time, which guarantees filesystem in f2fs_do_add_link()
841 if (current != F2FS_I(dir)->task) { in f2fs_do_add_link()
842 de = __f2fs_find_entry(dir, &fname, &page); in f2fs_do_add_link()
843 F2FS_I(dir)->task = NULL; in f2fs_do_add_link()
846 f2fs_put_page(page, 0); in f2fs_do_add_link()
847 err = -EEXIST; in f2fs_do_add_link()
848 } else if (IS_ERR(page)) { in f2fs_do_add_link()
849 err = PTR_ERR(page); in f2fs_do_add_link()
860 struct page *page; in f2fs_do_tmpfile() local
863 f2fs_down_write(&F2FS_I(inode)->i_sem); in f2fs_do_tmpfile()
864 page = f2fs_init_inode_metadata(inode, dir, fname, NULL); in f2fs_do_tmpfile()
865 if (IS_ERR(page)) { in f2fs_do_tmpfile()
866 err = PTR_ERR(page); in f2fs_do_tmpfile()
869 f2fs_put_page(page, 1); in f2fs_do_tmpfile()
874 f2fs_up_write(&F2FS_I(inode)->i_sem); in f2fs_do_tmpfile()
882 f2fs_down_write(&F2FS_I(inode)->i_sem); in f2fs_drop_nlink()
884 if (S_ISDIR(inode->i_mode)) in f2fs_drop_nlink()
889 if (S_ISDIR(inode->i_mode)) { in f2fs_drop_nlink()
893 f2fs_up_write(&F2FS_I(inode)->i_sem); in f2fs_drop_nlink()
895 if (inode->i_nlink == 0) in f2fs_drop_nlink()
902 * It only removes the dentry from the dentry page, corresponding name
903 * entry in name page does not need to be touched during deletion.
905 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, in f2fs_delete_entry() argument
910 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); in f2fs_delete_entry()
916 f2fs_add_ino_entry(F2FS_I_SB(dir), dir->i_ino, TRANS_DIR_INO); in f2fs_delete_entry()
919 return f2fs_delete_inline_entry(dentry, page, dir, inode); in f2fs_delete_entry()
921 lock_page(page); in f2fs_delete_entry()
922 f2fs_wait_on_page_writeback(page, DATA, true, true); in f2fs_delete_entry()
924 dentry_blk = page_address(page); in f2fs_delete_entry()
925 bit_pos = dentry - dentry_blk->dentry; in f2fs_delete_entry()
927 __clear_bit_le(bit_pos + i, &dentry_blk->dentry_bitmap); in f2fs_delete_entry()
929 /* Let's check and deallocate this dentry page */ in f2fs_delete_entry()
930 bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, in f2fs_delete_entry()
933 set_page_dirty(page); in f2fs_delete_entry()
936 !f2fs_truncate_hole(dir, page->index, page->index + 1)) { in f2fs_delete_entry()
937 f2fs_clear_page_cache_dirty_tag(page); in f2fs_delete_entry()
938 clear_page_dirty_for_io(page); in f2fs_delete_entry()
939 ClearPageUptodate(page); in f2fs_delete_entry()
940 clear_page_private_all(page); in f2fs_delete_entry()
945 f2fs_put_page(page, 1); in f2fs_delete_entry()
947 dir->i_mtime = inode_set_ctime_current(dir); in f2fs_delete_entry()
957 struct page *dentry_page; in f2fs_empty_dir()
970 if (PTR_ERR(dentry_page) == -ENOENT) { in f2fs_empty_dir()
983 bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, in f2fs_empty_dir()
1004 struct f2fs_sb_info *sbi = F2FS_I_SB(d->inode); in f2fs_fill_dentries()
1006 bool readdir_ra = sbi->readdir_ra; in f2fs_fill_dentries()
1010 bit_pos = ((unsigned long)ctx->pos % d->max); in f2fs_fill_dentries()
1015 while (bit_pos < d->max) { in f2fs_fill_dentries()
1016 bit_pos = find_next_bit_le(d->bitmap, d->max, bit_pos); in f2fs_fill_dentries()
1017 if (bit_pos >= d->max) in f2fs_fill_dentries()
1020 de = &d->dentry[bit_pos]; in f2fs_fill_dentries()
1021 if (de->name_len == 0) { in f2fs_fill_dentries()
1025 le32_to_cpu(de->ino)); in f2fs_fill_dentries()
1029 ctx->pos = start_pos + bit_pos; in f2fs_fill_dentries()
1033 d_type = fs_ftype_to_dtype(de->file_type); in f2fs_fill_dentries()
1035 de_name.name = d->filename[bit_pos]; in f2fs_fill_dentries()
1036 de_name.len = le16_to_cpu(de->name_len); in f2fs_fill_dentries()
1039 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); in f2fs_fill_dentries()
1040 if (unlikely(bit_pos > d->max || in f2fs_fill_dentries()
1041 le16_to_cpu(de->name_len) > F2FS_NAME_LEN)) { in f2fs_fill_dentries()
1043 __func__, le16_to_cpu(de->name_len)); in f2fs_fill_dentries()
1045 err = -EFSCORRUPTED; in f2fs_fill_dentries()
1050 if (IS_ENCRYPTED(d->inode)) { in f2fs_fill_dentries()
1051 int save_len = fstr->len; in f2fs_fill_dentries()
1053 err = fscrypt_fname_disk_to_usr(d->inode, in f2fs_fill_dentries()
1054 (u32)le32_to_cpu(de->hash_code), in f2fs_fill_dentries()
1060 fstr->len = save_len; in f2fs_fill_dentries()
1064 le32_to_cpu(de->ino), d_type)) { in f2fs_fill_dentries()
1070 f2fs_ra_node_page(sbi, le32_to_cpu(de->ino)); in f2fs_fill_dentries()
1072 ctx->pos = start_pos + bit_pos; in f2fs_fill_dentries()
1086 struct page *dentry_page = NULL; in f2fs_readdir()
1087 struct file_ra_state *ra = &file->f_ra; in f2fs_readdir()
1088 loff_t start_pos = ctx->pos; in f2fs_readdir()
1089 unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK); in f2fs_readdir()
1109 for (; n < npages; ctx->pos = n * NR_DENTRY_IN_BLOCK) { in f2fs_readdir()
1114 err = -ERESTARTSYS; in f2fs_readdir()
1120 if (npages - n > 1 && !ra_has_index(ra, n)) in f2fs_readdir()
1121 page_cache_sync_readahead(inode->i_mapping, ra, file, n, in f2fs_readdir()
1122 min(npages - n, (pgoff_t)MAX_DIR_RA_PAGES)); in f2fs_readdir()
1127 if (err == -ENOENT) { in f2fs_readdir()
1154 trace_f2fs_readdir(inode, start_pos, ctx->pos, err); in f2fs_readdir()