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()
46 /* 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()
55 !is_dot_dotdot(fname->usr_fname->name, fname->usr_fname->len)) { in f2fs_init_casefolded_name()
59 return -ENOMEM; in f2fs_init_casefolded_name()
61 len = utf8_casefold(sb->s_encoding, fname->usr_fname, in f2fs_init_casefolded_name()
66 return -EINVAL; in f2fs_init_casefolded_name()
70 fname->cf_name.name = buf; in f2fs_init_casefolded_name()
71 fname->cf_name.len = len; in f2fs_init_casefolded_name()
79 unsigned char *buf = (unsigned char *)fname->cf_name.name; in f2fs_free_casefolded_name()
83 fname->cf_name.name = NULL; in f2fs_free_casefolded_name()
96 fname->usr_fname = crypt_name->usr_fname; in __f2fs_setup_filename()
97 fname->disk_name = crypt_name->disk_name; in __f2fs_setup_filename()
99 fname->crypto_buf = crypt_name->crypto_buf; in __f2fs_setup_filename()
101 if (crypt_name->is_nokey_name) { in __f2fs_setup_filename()
102 /* hash was decoded from the no-key name */ in __f2fs_setup_filename()
103 fname->hash = cpu_to_le32(crypt_name->hash); in __f2fs_setup_filename()
156 kfree(fname->crypto_buf.name); in f2fs_free_filename()
157 fname->crypto_buf.name = NULL; in f2fs_free_filename()
162 static unsigned long dir_block_index(unsigned int level, in dir_block_index() argument
168 for (i = 0; i < level; i++) in dir_block_index()
171 bidx += idx * bucket_blocks(level); in dir_block_index()
176 struct page *dentry_page, in find_in_block()
197 if (fname->cf_name.name) in f2fs_match_name()
198 return generic_ci_match(dir, fname->usr_fname, in f2fs_match_name()
199 &fname->cf_name, in f2fs_match_name()
203 f.usr_fname = fname->usr_fname; in f2fs_match_name()
204 f.disk_name = fname->disk_name; in f2fs_match_name()
206 f.crypto_buf = fname->crypto_buf; in f2fs_match_name()
222 while (bit_pos < d->max) { in f2fs_find_target_dentry()
223 if (!test_bit_le(bit_pos, d->bitmap)) { in f2fs_find_target_dentry()
229 de = &d->dentry[bit_pos]; in f2fs_find_target_dentry()
231 if (unlikely(!de->name_len)) { in f2fs_find_target_dentry()
236 if (!use_hash || de->hash_code == fname->hash) { in f2fs_find_target_dentry()
237 res = f2fs_match_name(d->inode, fname, in f2fs_find_target_dentry()
238 d->filename[bit_pos], in f2fs_find_target_dentry()
239 le16_to_cpu(de->name_len)); in f2fs_find_target_dentry()
250 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); in f2fs_find_target_dentry()
261 unsigned int level, in find_in_level() argument
263 struct page **res_page, in find_in_level()
266 int s = GET_DENTRY_SLOTS(fname->disk_name.len); in find_in_level()
269 struct page *dentry_page; in find_in_level()
275 nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level); in find_in_level()
276 nblock = bucket_blocks(level); in find_in_level()
278 bucket_no = use_hash ? le32_to_cpu(fname->hash) % nbucket : 0; in find_in_level()
281 bidx = dir_block_index(level, F2FS_I(dir)->i_dir_level, in find_in_level()
289 if (PTR_ERR(dentry_page) == -ENOENT) { in find_in_level()
320 if (room && F2FS_I(dir)->chash != fname->hash) { in find_in_level()
321 F2FS_I(dir)->chash = fname->hash; in find_in_level()
322 F2FS_I(dir)->clevel = level; in find_in_level()
332 struct page **res_page) in __f2fs_find_entry()
337 unsigned int level; in __f2fs_find_entry() local
353 max_depth = F2FS_I(dir)->i_current_depth; in __f2fs_find_entry()
356 dir->i_ino, max_depth); in __f2fs_find_entry()
361 for (level = 0; level < max_depth; level++) { in __f2fs_find_entry()
362 de = find_in_level(dir, level, fname, res_page, use_hash); in __f2fs_find_entry()
376 F2FS_I(dir)->task = current; in __f2fs_find_entry()
382 * It returns the page where the entry was found (as a parameter - res_page),
383 * and the entry itself. Page is returned mapped and unlocked.
387 const struct qstr *child, struct page **res_page) in f2fs_find_entry()
395 if (err == -ENOENT) in f2fs_find_entry()
408 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p) in f2fs_parent_dir()
414 struct page **page) in f2fs_inode_by_name() argument
419 de = f2fs_find_entry(dir, qstr, page); in f2fs_inode_by_name()
421 res = le32_to_cpu(de->ino); in f2fs_inode_by_name()
422 f2fs_put_page(*page, 0); in f2fs_inode_by_name()
429 struct page *page, struct inode *inode) in f2fs_set_link() argument
433 lock_page(page); in f2fs_set_link()
434 f2fs_wait_on_page_writeback(page, type, true, true); in f2fs_set_link()
435 de->ino = cpu_to_le32(inode->i_ino); in f2fs_set_link()
436 de->file_type = fs_umode_to_ftype(inode->i_mode); in f2fs_set_link()
437 set_page_dirty(page); in f2fs_set_link()
441 f2fs_put_page(page, 1); in f2fs_set_link()
446 struct page *ipage) in init_dent_inode()
455 /* copy name info. to this inode page */ in init_dent_inode()
457 ri->i_namelen = cpu_to_le32(fname->disk_name.len); in init_dent_inode()
458 memcpy(ri->i_name, fname->disk_name.name, fname->disk_name.len); in init_dent_inode()
462 * Roll-forward recovery doesn't have encryption keys available, in init_dent_inode()
465 * roll-forward recovery of the dentry (i.e., make fsync'ing the in init_dent_inode()
469 if (fname->disk_name.len + sizeof(f2fs_hash_t) <= in init_dent_inode()
471 put_unaligned(fname->hash, (f2fs_hash_t *) in init_dent_inode()
472 &ri->i_name[fname->disk_name.len]); in init_dent_inode()
487 f2fs_update_dentry(inode->i_ino, inode->i_mode, d, &dot, 0, 0); in f2fs_do_make_empty_dir()
490 f2fs_update_dentry(parent->i_ino, parent->i_mode, d, &dotdot, 0, 1); in f2fs_do_make_empty_dir()
494 struct inode *parent, struct page *page) in make_empty_dir() argument
496 struct page *dentry_page; in make_empty_dir()
501 return f2fs_make_empty_inline_dir(inode, parent, page); in make_empty_dir()
503 dentry_page = f2fs_get_new_data_page(inode, page, 0, true); in make_empty_dir()
517 struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir, in f2fs_init_inode_metadata()
518 const struct f2fs_filename *fname, struct page *dpage) in f2fs_init_inode_metadata()
520 struct page *page; in f2fs_init_inode_metadata() local
524 page = f2fs_new_inode_page(inode); in f2fs_init_inode_metadata()
525 if (IS_ERR(page)) in f2fs_init_inode_metadata()
526 return page; in f2fs_init_inode_metadata()
528 if (S_ISDIR(inode->i_mode)) { in f2fs_init_inode_metadata()
530 get_page(page); in f2fs_init_inode_metadata()
531 err = make_empty_dir(inode, dir, page); in f2fs_init_inode_metadata()
533 lock_page(page); in f2fs_init_inode_metadata()
536 put_page(page); in f2fs_init_inode_metadata()
539 err = f2fs_init_acl(inode, dir, page, dpage); in f2fs_init_inode_metadata()
544 fname ? fname->usr_fname : NULL, page); in f2fs_init_inode_metadata()
549 err = fscrypt_set_context(inode, page); in f2fs_init_inode_metadata()
554 page = f2fs_get_node_page(F2FS_I_SB(dir), inode->i_ino); in f2fs_init_inode_metadata()
555 if (IS_ERR(page)) in f2fs_init_inode_metadata()
556 return page; in f2fs_init_inode_metadata()
559 init_dent_inode(dir, inode, fname, page); in f2fs_init_inode_metadata()
566 if (!S_ISDIR(inode->i_mode)) in f2fs_init_inode_metadata()
572 if (inode->i_nlink == 0) in f2fs_init_inode_metadata()
573 f2fs_remove_orphan_inode(F2FS_I_SB(dir), inode->i_ino); in f2fs_init_inode_metadata()
576 return page; in f2fs_init_inode_metadata()
580 f2fs_update_inode(inode, page); in f2fs_init_inode_metadata()
581 f2fs_put_page(page, 1); in f2fs_init_inode_metadata()
589 if (S_ISDIR(inode->i_mode)) in f2fs_update_parent_metadata()
596 if (F2FS_I(dir)->i_current_depth != current_depth) in f2fs_update_parent_metadata()
613 if (zero_end - zero_start >= slots) in f2fs_room_for_filename()
623 bool f2fs_has_enough_room(struct inode *dir, struct page *ipage, in f2fs_has_enough_room()
628 int slots = GET_DENTRY_SLOTS(fname->disk_name.len); in f2fs_has_enough_room()
642 int slots = GET_DENTRY_SLOTS(name->len); in f2fs_update_dentry()
645 de = &d->dentry[bit_pos]; in f2fs_update_dentry()
646 de->hash_code = name_hash; in f2fs_update_dentry()
647 de->name_len = cpu_to_le16(name->len); in f2fs_update_dentry()
648 memcpy(d->filename[bit_pos], name->name, name->len); in f2fs_update_dentry()
649 de->ino = cpu_to_le32(ino); in f2fs_update_dentry()
650 de->file_type = fs_umode_to_ftype(mode); in f2fs_update_dentry()
652 __set_bit_le(bit_pos + i, (void *)d->bitmap); in f2fs_update_dentry()
655 (de + i)->name_len = 0; in f2fs_update_dentry()
663 unsigned int level; in f2fs_add_regular_entry() local
667 struct page *dentry_page = NULL; in f2fs_add_regular_entry()
670 struct page *page = NULL; in f2fs_add_regular_entry() local
673 level = 0; in f2fs_add_regular_entry()
674 slots = GET_DENTRY_SLOTS(fname->disk_name.len); in f2fs_add_regular_entry()
676 current_depth = F2FS_I(dir)->i_current_depth; in f2fs_add_regular_entry()
677 if (F2FS_I(dir)->chash == fname->hash) { in f2fs_add_regular_entry()
678 level = F2FS_I(dir)->clevel; in f2fs_add_regular_entry()
679 F2FS_I(dir)->chash = 0; in f2fs_add_regular_entry()
684 return -ENOSPC; in f2fs_add_regular_entry()
687 return -ENOSPC; in f2fs_add_regular_entry()
690 if (level == current_depth) in f2fs_add_regular_entry()
693 nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level); in f2fs_add_regular_entry()
694 nblock = bucket_blocks(level); in f2fs_add_regular_entry()
696 bidx = dir_block_index(level, F2FS_I(dir)->i_dir_level, in f2fs_add_regular_entry()
697 (le32_to_cpu(fname->hash) % nbucket)); in f2fs_add_regular_entry()
699 for (block = bidx; block <= (bidx + nblock - 1); block++) { in f2fs_add_regular_entry()
705 bit_pos = f2fs_room_for_filename(&dentry_blk->dentry_bitmap, in f2fs_add_regular_entry()
713 /* Move to next level to find the empty slot for new dentry */ in f2fs_add_regular_entry()
714 ++level; in f2fs_add_regular_entry()
720 f2fs_down_write(&F2FS_I(inode)->i_sem); in f2fs_add_regular_entry()
721 page = f2fs_init_inode_metadata(inode, dir, fname, NULL); in f2fs_add_regular_entry()
722 if (IS_ERR(page)) { in f2fs_add_regular_entry()
723 err = PTR_ERR(page); in f2fs_add_regular_entry()
729 f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash, in f2fs_add_regular_entry()
735 f2fs_i_pino_write(inode, dir->i_ino); in f2fs_add_regular_entry()
737 /* synchronize inode page's data from inode cache */ in f2fs_add_regular_entry()
739 f2fs_update_inode(inode, page); in f2fs_add_regular_entry()
741 f2fs_put_page(page, 1); in f2fs_add_regular_entry()
747 f2fs_up_write(&F2FS_I(inode)->i_sem); in f2fs_add_regular_entry()
757 int err = -EAGAIN; in f2fs_add_dentry()
762 * i_xattr_sem -> inode_page lock used by f2fs_setxattr. in f2fs_add_dentry()
764 f2fs_down_read(&F2FS_I(dir)->i_xattr_sem); in f2fs_add_dentry()
766 f2fs_up_read(&F2FS_I(dir)->i_xattr_sem); in f2fs_add_dentry()
768 if (err == -EAGAIN) in f2fs_add_dentry()
783 struct page *page = NULL; in f2fs_do_add_link() local
795 * verify on-disk dentry one more time, which guarantees filesystem in f2fs_do_add_link()
798 if (current != F2FS_I(dir)->task) { in f2fs_do_add_link()
799 de = __f2fs_find_entry(dir, &fname, &page); in f2fs_do_add_link()
800 F2FS_I(dir)->task = NULL; in f2fs_do_add_link()
803 f2fs_put_page(page, 0); in f2fs_do_add_link()
804 err = -EEXIST; in f2fs_do_add_link()
805 } else if (IS_ERR(page)) { in f2fs_do_add_link()
806 err = PTR_ERR(page); in f2fs_do_add_link()
817 struct page *page; in f2fs_do_tmpfile() local
820 f2fs_down_write(&F2FS_I(inode)->i_sem); in f2fs_do_tmpfile()
821 page = f2fs_init_inode_metadata(inode, dir, fname, NULL); in f2fs_do_tmpfile()
822 if (IS_ERR(page)) { in f2fs_do_tmpfile()
823 err = PTR_ERR(page); in f2fs_do_tmpfile()
826 f2fs_put_page(page, 1); in f2fs_do_tmpfile()
831 f2fs_up_write(&F2FS_I(inode)->i_sem); in f2fs_do_tmpfile()
839 f2fs_down_write(&F2FS_I(inode)->i_sem); in f2fs_drop_nlink()
841 if (S_ISDIR(inode->i_mode)) in f2fs_drop_nlink()
846 if (S_ISDIR(inode->i_mode)) { in f2fs_drop_nlink()
850 f2fs_up_write(&F2FS_I(inode)->i_sem); in f2fs_drop_nlink()
852 if (inode->i_nlink == 0) in f2fs_drop_nlink()
859 * It only removes the dentry from the dentry page, corresponding name
860 * entry in name page does not need to be touched during deletion.
862 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, in f2fs_delete_entry() argument
867 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); in f2fs_delete_entry()
868 pgoff_t index = page_folio(page)->index; in f2fs_delete_entry()
874 f2fs_add_ino_entry(F2FS_I_SB(dir), dir->i_ino, TRANS_DIR_INO); in f2fs_delete_entry()
877 return f2fs_delete_inline_entry(dentry, page, dir, inode); in f2fs_delete_entry()
879 lock_page(page); in f2fs_delete_entry()
880 f2fs_wait_on_page_writeback(page, DATA, true, true); in f2fs_delete_entry()
882 dentry_blk = page_address(page); in f2fs_delete_entry()
883 bit_pos = dentry - dentry_blk->dentry; in f2fs_delete_entry()
885 __clear_bit_le(bit_pos + i, &dentry_blk->dentry_bitmap); in f2fs_delete_entry()
887 /* Let's check and deallocate this dentry page */ in f2fs_delete_entry()
888 bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, in f2fs_delete_entry()
891 set_page_dirty(page); in f2fs_delete_entry()
895 f2fs_clear_page_cache_dirty_tag(page_folio(page)); in f2fs_delete_entry()
896 clear_page_dirty_for_io(page); in f2fs_delete_entry()
897 ClearPageUptodate(page); in f2fs_delete_entry()
898 clear_page_private_all(page); in f2fs_delete_entry()
903 f2fs_put_page(page, 1); in f2fs_delete_entry()
915 struct page *dentry_page; in f2fs_empty_dir()
928 if (PTR_ERR(dentry_page) == -ENOENT) { in f2fs_empty_dir()
941 bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, in f2fs_empty_dir()
962 struct f2fs_sb_info *sbi = F2FS_I_SB(d->inode); in f2fs_fill_dentries()
964 bool readdir_ra = sbi->readdir_ra; in f2fs_fill_dentries()
968 bit_pos = ((unsigned long)ctx->pos % d->max); in f2fs_fill_dentries()
973 while (bit_pos < d->max) { in f2fs_fill_dentries()
974 bit_pos = find_next_bit_le(d->bitmap, d->max, bit_pos); in f2fs_fill_dentries()
975 if (bit_pos >= d->max) in f2fs_fill_dentries()
978 de = &d->dentry[bit_pos]; in f2fs_fill_dentries()
979 if (de->name_len == 0) { in f2fs_fill_dentries()
983 le32_to_cpu(de->ino)); in f2fs_fill_dentries()
987 ctx->pos = start_pos + bit_pos; in f2fs_fill_dentries()
991 d_type = fs_ftype_to_dtype(de->file_type); in f2fs_fill_dentries()
993 de_name.name = d->filename[bit_pos]; in f2fs_fill_dentries()
994 de_name.len = le16_to_cpu(de->name_len); in f2fs_fill_dentries()
997 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); in f2fs_fill_dentries()
998 if (unlikely(bit_pos > d->max || in f2fs_fill_dentries()
999 le16_to_cpu(de->name_len) > F2FS_NAME_LEN)) { in f2fs_fill_dentries()
1001 __func__, le16_to_cpu(de->name_len)); in f2fs_fill_dentries()
1003 err = -EFSCORRUPTED; in f2fs_fill_dentries()
1008 if (IS_ENCRYPTED(d->inode)) { in f2fs_fill_dentries()
1009 int save_len = fstr->len; in f2fs_fill_dentries()
1011 err = fscrypt_fname_disk_to_usr(d->inode, in f2fs_fill_dentries()
1012 (u32)le32_to_cpu(de->hash_code), in f2fs_fill_dentries()
1018 fstr->len = save_len; in f2fs_fill_dentries()
1022 le32_to_cpu(de->ino), d_type)) { in f2fs_fill_dentries()
1028 f2fs_ra_node_page(sbi, le32_to_cpu(de->ino)); in f2fs_fill_dentries()
1030 ctx->pos = start_pos + bit_pos; in f2fs_fill_dentries()
1044 struct page *dentry_page = NULL; in f2fs_readdir()
1045 struct file_ra_state *ra = &file->f_ra; in f2fs_readdir()
1046 loff_t start_pos = ctx->pos; in f2fs_readdir()
1047 unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK); in f2fs_readdir()
1067 for (; n < npages; ctx->pos = n * NR_DENTRY_IN_BLOCK) { in f2fs_readdir()
1072 err = -ERESTARTSYS; in f2fs_readdir()
1078 if (npages - n > 1 && !ra_has_index(ra, n)) in f2fs_readdir()
1079 page_cache_sync_readahead(inode->i_mapping, ra, file, n, in f2fs_readdir()
1080 min(npages - n, (pgoff_t)MAX_DIR_RA_PAGES)); in f2fs_readdir()
1085 if (err == -ENOENT) { in f2fs_readdir()
1112 trace_f2fs_readdir(inode, start_pos, ctx->pos, err); in f2fs_readdir()