Lines Matching +full:page +full:- +full:level
1 // SPDX-License-Identifier: GPL-2.0
20 return ((unsigned long long) (i_size_read(inode) + PAGE_SIZE - 1)) in dir_blocks()
24 static unsigned int dir_buckets(unsigned int level, int dir_level) in dir_buckets() argument
26 if (level + dir_level < MAX_DIR_HASH_DEPTH / 2) in dir_buckets()
27 return 1 << (level + dir_level); in dir_buckets()
32 static unsigned int bucket_blocks(unsigned int level) in bucket_blocks() argument
34 if (level < MAX_DIR_HASH_DEPTH / 2) in bucket_blocks()
63 de->file_type = f2fs_type_by_mode[(mode & S_IFMT) >> S_SHIFT]; in set_de_type()
68 if (de->file_type < F2FS_FT_MAX) in f2fs_get_de_type()
69 return f2fs_filetype_table[de->file_type]; in f2fs_get_de_type()
73 /* If @dir is casefolded, initialize @fname->cf_name from @fname->usr_fname. */
78 struct super_block *sb = dir->i_sb; in f2fs_init_casefolded_name()
82 fname->cf_name.name = f2fs_kmalloc(sbi, F2FS_NAME_LEN, in f2fs_init_casefolded_name()
84 if (!fname->cf_name.name) in f2fs_init_casefolded_name()
85 return -ENOMEM; in f2fs_init_casefolded_name()
86 fname->cf_name.len = utf8_casefold(sb->s_encoding, in f2fs_init_casefolded_name()
87 fname->usr_fname, in f2fs_init_casefolded_name()
88 fname->cf_name.name, in f2fs_init_casefolded_name()
90 if ((int)fname->cf_name.len <= 0) { in f2fs_init_casefolded_name()
91 kfree(fname->cf_name.name); in f2fs_init_casefolded_name()
92 fname->cf_name.name = NULL; in f2fs_init_casefolded_name()
94 return -EINVAL; in f2fs_init_casefolded_name()
110 fname->usr_fname = crypt_name->usr_fname; in __f2fs_setup_filename()
111 fname->disk_name = crypt_name->disk_name; in __f2fs_setup_filename()
113 fname->crypto_buf = crypt_name->crypto_buf; in __f2fs_setup_filename()
115 if (crypt_name->is_nokey_name) { in __f2fs_setup_filename()
116 /* hash was decoded from the no-key name */ in __f2fs_setup_filename()
117 fname->hash = cpu_to_le32(crypt_name->hash); in __f2fs_setup_filename()
170 kfree(fname->crypto_buf.name); in f2fs_free_filename()
171 fname->crypto_buf.name = NULL; in f2fs_free_filename()
174 kfree(fname->cf_name.name); in f2fs_free_filename()
175 fname->cf_name.name = NULL; in f2fs_free_filename()
179 static unsigned long dir_block_index(unsigned int level, in dir_block_index() argument
185 for (i = 0; i < level; i++) in dir_block_index()
187 bidx += idx * bucket_blocks(level); in dir_block_index()
192 struct page *dentry_page, in find_in_block()
207 * Test whether a case-insensitive directory entry matches the filename
213 const struct super_block *sb = dir->i_sb; in f2fs_match_ci_name()
214 const struct unicode_map *um = sb->s_encoding; in f2fs_match_ci_name()
221 * In strict mode, ignore invalid names. In non-strict mode, in f2fs_match_ci_name()
224 if (sb_has_strict_encoding(sb) || name->len != entry.len) in f2fs_match_ci_name()
226 return !memcmp(name->name, entry.name, name->len); in f2fs_match_ci_name()
239 if (fname->cf_name.name) { in f2fs_match_name()
240 struct qstr cf = FSTR_TO_QSTR(&fname->cf_name); in f2fs_match_name()
245 f.usr_fname = fname->usr_fname; in f2fs_match_name()
246 f.disk_name = fname->disk_name; in f2fs_match_name()
248 f.crypto_buf = fname->crypto_buf; in f2fs_match_name()
262 while (bit_pos < d->max) { in f2fs_find_target_dentry()
263 if (!test_bit_le(bit_pos, d->bitmap)) { in f2fs_find_target_dentry()
269 de = &d->dentry[bit_pos]; in f2fs_find_target_dentry()
271 if (unlikely(!de->name_len)) { in f2fs_find_target_dentry()
276 if (de->hash_code == fname->hash && in f2fs_find_target_dentry()
277 f2fs_match_name(d->inode, fname, d->filename[bit_pos], in f2fs_find_target_dentry()
278 le16_to_cpu(de->name_len))) in f2fs_find_target_dentry()
285 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); in f2fs_find_target_dentry()
296 unsigned int level, in find_in_level() argument
298 struct page **res_page) in find_in_level()
300 int s = GET_DENTRY_SLOTS(fname->disk_name.len); in find_in_level()
303 struct page *dentry_page; in find_in_level()
308 nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level); in find_in_level()
309 nblock = bucket_blocks(level); in find_in_level()
311 bidx = dir_block_index(level, F2FS_I(dir)->i_dir_level, in find_in_level()
312 le32_to_cpu(fname->hash) % nbucket); in find_in_level()
319 if (PTR_ERR(dentry_page) == -ENOENT) { in find_in_level()
339 if (!de && room && F2FS_I(dir)->chash != fname->hash) { in find_in_level()
340 F2FS_I(dir)->chash = fname->hash; in find_in_level()
341 F2FS_I(dir)->clevel = level; in find_in_level()
349 struct page **res_page) in __f2fs_find_entry()
354 unsigned int level; in __f2fs_find_entry() local
366 max_depth = F2FS_I(dir)->i_current_depth; in __f2fs_find_entry()
369 dir->i_ino, max_depth); in __f2fs_find_entry()
374 for (level = 0; level < max_depth; level++) { in __f2fs_find_entry()
375 de = find_in_level(dir, level, fname, res_page); in __f2fs_find_entry()
382 F2FS_I(dir)->task = current; in __f2fs_find_entry()
388 * It returns the page where the entry was found (as a parameter - res_page),
389 * and the entry itself. Page is returned mapped and unlocked.
393 const struct qstr *child, struct page **res_page) in f2fs_find_entry()
401 if (err == -ENOENT) in f2fs_find_entry()
414 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p) in f2fs_parent_dir()
422 struct page **page) in f2fs_inode_by_name() argument
427 de = f2fs_find_entry(dir, qstr, page); in f2fs_inode_by_name()
429 res = le32_to_cpu(de->ino); in f2fs_inode_by_name()
430 f2fs_put_page(*page, 0); in f2fs_inode_by_name()
437 struct page *page, struct inode *inode) in f2fs_set_link() argument
440 lock_page(page); in f2fs_set_link()
441 f2fs_wait_on_page_writeback(page, type, true, true); in f2fs_set_link()
442 de->ino = cpu_to_le32(inode->i_ino); in f2fs_set_link()
443 set_de_type(de, inode->i_mode); in f2fs_set_link()
444 set_page_dirty(page); in f2fs_set_link()
446 dir->i_mtime = dir->i_ctime = current_time(dir); in f2fs_set_link()
448 f2fs_put_page(page, 1); in f2fs_set_link()
452 struct page *ipage) in init_dent_inode()
458 /* copy name info. to this inode page */ in init_dent_inode()
460 ri->i_namelen = cpu_to_le32(fname->disk_name.len); in init_dent_inode()
461 memcpy(ri->i_name, fname->disk_name.name, fname->disk_name.len); in init_dent_inode()
472 f2fs_update_dentry(inode->i_ino, inode->i_mode, d, &dot, 0, 0); in f2fs_do_make_empty_dir()
475 f2fs_update_dentry(parent->i_ino, parent->i_mode, d, &dotdot, 0, 1); in f2fs_do_make_empty_dir()
479 struct inode *parent, struct page *page) in make_empty_dir() argument
481 struct page *dentry_page; in make_empty_dir()
486 return f2fs_make_empty_inline_dir(inode, parent, page); in make_empty_dir()
488 dentry_page = f2fs_get_new_data_page(inode, page, 0, true); in make_empty_dir()
502 struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir, in f2fs_init_inode_metadata()
503 const struct f2fs_filename *fname, struct page *dpage) in f2fs_init_inode_metadata()
505 struct page *page; in f2fs_init_inode_metadata() local
509 page = f2fs_new_inode_page(inode); in f2fs_init_inode_metadata()
510 if (IS_ERR(page)) in f2fs_init_inode_metadata()
511 return page; in f2fs_init_inode_metadata()
513 if (S_ISDIR(inode->i_mode)) { in f2fs_init_inode_metadata()
515 get_page(page); in f2fs_init_inode_metadata()
516 err = make_empty_dir(inode, dir, page); in f2fs_init_inode_metadata()
518 lock_page(page); in f2fs_init_inode_metadata()
521 put_page(page); in f2fs_init_inode_metadata()
524 err = f2fs_init_acl(inode, dir, page, dpage); in f2fs_init_inode_metadata()
529 fname ? fname->usr_fname : NULL, page); in f2fs_init_inode_metadata()
534 err = fscrypt_set_context(inode, page); in f2fs_init_inode_metadata()
539 page = f2fs_get_node_page(F2FS_I_SB(dir), inode->i_ino); in f2fs_init_inode_metadata()
540 if (IS_ERR(page)) in f2fs_init_inode_metadata()
541 return page; in f2fs_init_inode_metadata()
545 init_dent_inode(fname, page); in f2fs_init_inode_metadata()
555 if (!S_ISDIR(inode->i_mode)) in f2fs_init_inode_metadata()
561 if (inode->i_nlink == 0) in f2fs_init_inode_metadata()
562 f2fs_remove_orphan_inode(F2FS_I_SB(dir), inode->i_ino); in f2fs_init_inode_metadata()
565 return page; in f2fs_init_inode_metadata()
569 f2fs_update_inode(inode, page); in f2fs_init_inode_metadata()
570 f2fs_put_page(page, 1); in f2fs_init_inode_metadata()
578 if (S_ISDIR(inode->i_mode)) in f2fs_update_parent_metadata()
582 dir->i_mtime = dir->i_ctime = current_time(dir); in f2fs_update_parent_metadata()
585 if (F2FS_I(dir)->i_current_depth != current_depth) in f2fs_update_parent_metadata()
602 if (zero_end - zero_start >= slots) in f2fs_room_for_filename()
612 bool f2fs_has_enough_room(struct inode *dir, struct page *ipage, in f2fs_has_enough_room()
617 int slots = GET_DENTRY_SLOTS(fname->disk_name.len); in f2fs_has_enough_room()
631 int slots = GET_DENTRY_SLOTS(name->len); in f2fs_update_dentry()
634 de = &d->dentry[bit_pos]; in f2fs_update_dentry()
635 de->hash_code = name_hash; in f2fs_update_dentry()
636 de->name_len = cpu_to_le16(name->len); in f2fs_update_dentry()
637 memcpy(d->filename[bit_pos], name->name, name->len); in f2fs_update_dentry()
638 de->ino = cpu_to_le32(ino); in f2fs_update_dentry()
641 __set_bit_le(bit_pos + i, (void *)d->bitmap); in f2fs_update_dentry()
644 (de + i)->name_len = 0; in f2fs_update_dentry()
652 unsigned int level; in f2fs_add_regular_entry() local
656 struct page *dentry_page = NULL; in f2fs_add_regular_entry()
659 struct page *page = NULL; in f2fs_add_regular_entry() local
662 level = 0; in f2fs_add_regular_entry()
663 slots = GET_DENTRY_SLOTS(fname->disk_name.len); in f2fs_add_regular_entry()
665 current_depth = F2FS_I(dir)->i_current_depth; in f2fs_add_regular_entry()
666 if (F2FS_I(dir)->chash == fname->hash) { in f2fs_add_regular_entry()
667 level = F2FS_I(dir)->clevel; in f2fs_add_regular_entry()
668 F2FS_I(dir)->chash = 0; in f2fs_add_regular_entry()
674 return -ENOSPC; in f2fs_add_regular_entry()
678 return -ENOSPC; in f2fs_add_regular_entry()
681 if (level == current_depth) in f2fs_add_regular_entry()
684 nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level); in f2fs_add_regular_entry()
685 nblock = bucket_blocks(level); in f2fs_add_regular_entry()
687 bidx = dir_block_index(level, F2FS_I(dir)->i_dir_level, in f2fs_add_regular_entry()
688 (le32_to_cpu(fname->hash) % nbucket)); in f2fs_add_regular_entry()
690 for (block = bidx; block <= (bidx + nblock - 1); block++) { in f2fs_add_regular_entry()
696 bit_pos = f2fs_room_for_filename(&dentry_blk->dentry_bitmap, in f2fs_add_regular_entry()
704 /* Move to next level to find the empty slot for new dentry */ in f2fs_add_regular_entry()
705 ++level; in f2fs_add_regular_entry()
711 down_write(&F2FS_I(inode)->i_sem); in f2fs_add_regular_entry()
712 page = f2fs_init_inode_metadata(inode, dir, fname, NULL); in f2fs_add_regular_entry()
713 if (IS_ERR(page)) { in f2fs_add_regular_entry()
714 err = PTR_ERR(page); in f2fs_add_regular_entry()
720 f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash, in f2fs_add_regular_entry()
726 f2fs_i_pino_write(inode, dir->i_ino); in f2fs_add_regular_entry()
728 /* synchronize inode page's data from inode cache */ in f2fs_add_regular_entry()
730 f2fs_update_inode(inode, page); in f2fs_add_regular_entry()
732 f2fs_put_page(page, 1); in f2fs_add_regular_entry()
738 up_write(&F2FS_I(inode)->i_sem); in f2fs_add_regular_entry()
748 int err = -EAGAIN; in f2fs_add_dentry()
752 if (err == -EAGAIN) in f2fs_add_dentry()
767 struct page *page = NULL; in f2fs_do_add_link() local
779 * verify on-disk dentry one more time, which guarantees filesystem in f2fs_do_add_link()
782 if (current != F2FS_I(dir)->task) { in f2fs_do_add_link()
783 de = __f2fs_find_entry(dir, &fname, &page); in f2fs_do_add_link()
784 F2FS_I(dir)->task = NULL; in f2fs_do_add_link()
787 f2fs_put_page(page, 0); in f2fs_do_add_link()
788 err = -EEXIST; in f2fs_do_add_link()
789 } else if (IS_ERR(page)) { in f2fs_do_add_link()
790 err = PTR_ERR(page); in f2fs_do_add_link()
800 struct page *page; in f2fs_do_tmpfile() local
803 down_write(&F2FS_I(inode)->i_sem); in f2fs_do_tmpfile()
804 page = f2fs_init_inode_metadata(inode, dir, NULL, NULL); in f2fs_do_tmpfile()
805 if (IS_ERR(page)) { in f2fs_do_tmpfile()
806 err = PTR_ERR(page); in f2fs_do_tmpfile()
809 f2fs_put_page(page, 1); in f2fs_do_tmpfile()
814 up_write(&F2FS_I(inode)->i_sem); in f2fs_do_tmpfile()
822 down_write(&F2FS_I(inode)->i_sem); in f2fs_drop_nlink()
824 if (S_ISDIR(inode->i_mode)) in f2fs_drop_nlink()
826 inode->i_ctime = current_time(inode); in f2fs_drop_nlink()
829 if (S_ISDIR(inode->i_mode)) { in f2fs_drop_nlink()
833 up_write(&F2FS_I(inode)->i_sem); in f2fs_drop_nlink()
835 if (inode->i_nlink == 0) in f2fs_drop_nlink()
842 * It only removes the dentry from the dentry page, corresponding name
843 * entry in name page does not need to be touched during deletion.
845 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, in f2fs_delete_entry() argument
850 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); in f2fs_delete_entry()
856 f2fs_add_ino_entry(F2FS_I_SB(dir), dir->i_ino, TRANS_DIR_INO); in f2fs_delete_entry()
859 return f2fs_delete_inline_entry(dentry, page, dir, inode); in f2fs_delete_entry()
861 lock_page(page); in f2fs_delete_entry()
862 f2fs_wait_on_page_writeback(page, DATA, true, true); in f2fs_delete_entry()
864 dentry_blk = page_address(page); in f2fs_delete_entry()
865 bit_pos = dentry - dentry_blk->dentry; in f2fs_delete_entry()
867 __clear_bit_le(bit_pos + i, &dentry_blk->dentry_bitmap); in f2fs_delete_entry()
869 /* Let's check and deallocate this dentry page */ in f2fs_delete_entry()
870 bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, in f2fs_delete_entry()
873 set_page_dirty(page); in f2fs_delete_entry()
876 !f2fs_truncate_hole(dir, page->index, page->index + 1)) { in f2fs_delete_entry()
877 f2fs_clear_page_cache_dirty_tag(page); in f2fs_delete_entry()
878 clear_page_dirty_for_io(page); in f2fs_delete_entry()
879 f2fs_clear_page_private(page); in f2fs_delete_entry()
880 ClearPageUptodate(page); in f2fs_delete_entry()
881 clear_cold_data(page); in f2fs_delete_entry()
885 f2fs_put_page(page, 1); in f2fs_delete_entry()
887 dir->i_ctime = dir->i_mtime = current_time(dir); in f2fs_delete_entry()
897 struct page *dentry_page; in f2fs_empty_dir()
908 if (PTR_ERR(dentry_page) == -ENOENT) in f2fs_empty_dir()
919 bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, in f2fs_empty_dir()
938 struct f2fs_sb_info *sbi = F2FS_I_SB(d->inode); in f2fs_fill_dentries()
940 bool readdir_ra = sbi->readdir_ra == 1; in f2fs_fill_dentries()
944 bit_pos = ((unsigned long)ctx->pos % d->max); in f2fs_fill_dentries()
949 while (bit_pos < d->max) { in f2fs_fill_dentries()
950 bit_pos = find_next_bit_le(d->bitmap, d->max, bit_pos); in f2fs_fill_dentries()
951 if (bit_pos >= d->max) in f2fs_fill_dentries()
954 de = &d->dentry[bit_pos]; in f2fs_fill_dentries()
955 if (de->name_len == 0) { in f2fs_fill_dentries()
958 "%sF2FS-fs (%s): invalid namelen(0), ino:%u, run fsck to fix.", in f2fs_fill_dentries()
959 KERN_WARNING, sbi->sb->s_id, in f2fs_fill_dentries()
960 le32_to_cpu(de->ino)); in f2fs_fill_dentries()
964 ctx->pos = start_pos + bit_pos; in f2fs_fill_dentries()
970 de_name.name = d->filename[bit_pos]; in f2fs_fill_dentries()
971 de_name.len = le16_to_cpu(de->name_len); in f2fs_fill_dentries()
974 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); in f2fs_fill_dentries()
975 if (unlikely(bit_pos > d->max || in f2fs_fill_dentries()
976 le16_to_cpu(de->name_len) > F2FS_NAME_LEN)) { in f2fs_fill_dentries()
978 __func__, le16_to_cpu(de->name_len)); in f2fs_fill_dentries()
980 err = -EFSCORRUPTED; in f2fs_fill_dentries()
984 if (IS_ENCRYPTED(d->inode)) { in f2fs_fill_dentries()
985 int save_len = fstr->len; in f2fs_fill_dentries()
987 err = fscrypt_fname_disk_to_usr(d->inode, in f2fs_fill_dentries()
988 (u32)le32_to_cpu(de->hash_code), in f2fs_fill_dentries()
994 fstr->len = save_len; in f2fs_fill_dentries()
998 le32_to_cpu(de->ino), d_type)) { in f2fs_fill_dentries()
1004 f2fs_ra_node_page(sbi, le32_to_cpu(de->ino)); in f2fs_fill_dentries()
1006 ctx->pos = start_pos + bit_pos; in f2fs_fill_dentries()
1020 struct page *dentry_page = NULL; in f2fs_readdir()
1021 struct file_ra_state *ra = &file->f_ra; in f2fs_readdir()
1022 loff_t start_pos = ctx->pos; in f2fs_readdir()
1023 unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK); in f2fs_readdir()
1043 for (; n < npages; n++, ctx->pos = n * NR_DENTRY_IN_BLOCK) { in f2fs_readdir()
1047 err = -ERESTARTSYS; in f2fs_readdir()
1053 if (npages - n > 1 && !ra_has_index(ra, n)) in f2fs_readdir()
1054 page_cache_sync_readahead(inode->i_mapping, ra, file, n, in f2fs_readdir()
1055 min(npages - n, (pgoff_t)MAX_DIR_RA_PAGES)); in f2fs_readdir()
1060 if (err == -ENOENT) { in f2fs_readdir()
1084 trace_f2fs_readdir(inode, start_pos, ctx->pos, err); in f2fs_readdir()
1091 return fscrypt_get_encryption_info(inode) ? -EACCES : 0; in f2fs_dir_open()