269 static unsigned dx_root_limit(struct inode *dir, unsigned infosize);
270 static unsigned dx_node_limit(struct inode *dir);
272 				 struct inode *dir,
276 static int dx_make_map(struct inode *dir, struct ext4_dir_entry_2 *de,
285 static int ext4_htree_next_block(struct inode *dir, __u32 hash,
289 static struct buffer_head * ext4_dx_find_entry(struct inode *dir,
293 			     struct inode *dir, struct inode *inode);
572 static inline unsigned dx_root_limit(struct inode *dir, unsigned infosize)  in dx_root_limit()  argument
574 	unsigned entry_space = dir->i_sb->s_blocksize - EXT4_DIR_REC_LEN(1) -  in dx_root_limit()
577 	if (ext4_has_metadata_csum(dir->i_sb))  in dx_root_limit()
582 static inline unsigned dx_node_limit(struct inode *dir)  in dx_node_limit()  argument
584 	unsigned entry_space = dir->i_sb->s_blocksize - EXT4_DIR_REC_LEN(0);  in dx_node_limit()
586 	if (ext4_has_metadata_csum(dir->i_sb))  in dx_node_limit()
614 static struct stats dx_show_leaf(struct inode *dir,  in dx_show_leaf()  argument
639 				if (IS_ENCRYPTED(dir))  in dx_show_leaf()
640 					res = fscrypt_get_encryption_info(dir);  in dx_show_leaf()
645 				if (!fscrypt_has_encryption_key(dir)) {  in dx_show_leaf()
647 					ext4fs_dirhash(dir, de->name,  in dx_show_leaf()
659 						dir, len,  in dx_show_leaf()
666 					res = fscrypt_fname_disk_to_usr(dir,  in dx_show_leaf()
680 					ext4fs_dirhash(dir, de->name,  in dx_show_leaf()
691 				ext4fs_dirhash(dir, de->name, de->name_len, &h);  in dx_show_leaf()
705 struct stats dx_show_entries(struct dx_hash_info *hinfo, struct inode *dir,  in dx_show_entries()  argument
708 	unsigned blocksize = dir->i_sb->s_blocksize;  in dx_show_entries()
720 		bh = ext4_bread(NULL,dir, block, 0);  in dx_show_entries()
724 		   dx_show_entries(hinfo, dir, ((struct dx_node *) bh->b_data)->entries, levels - 1):  in dx_show_entries()
725 		   dx_show_leaf(dir, hinfo, (struct ext4_dir_entry_2 *)  in dx_show_entries()
750 dx_probe(struct ext4_filename *fname, struct inode *dir,  in dx_probe()  argument
761 	frame->bh = ext4_read_dirblock(dir, 0, INDEX);  in dx_probe()
769 		ext4_warning_inode(dir, "Unrecognised inode hash code %u",  in dx_probe()
777 		hinfo->hash_version += EXT4_SB(dir->i_sb)->s_hash_unsigned;  in dx_probe()
778 	hinfo->seed = EXT4_SB(dir->i_sb)->s_hash_seed;  in dx_probe()
780 		ext4fs_dirhash(dir, fname_name(fname), fname_len(fname), hinfo);  in dx_probe()
784 		ext4_warning_inode(dir, "Unimplemented hash flags: %#06x",  in dx_probe()
790 	if (indirect >= ext4_dir_htree_level(dir->i_sb)) {  in dx_probe()
791 		ext4_warning(dir->i_sb,  in dx_probe()
793 			     "supported value", dir->i_ino,  in dx_probe()
794 			     ext4_dir_htree_level(dir->i_sb));  in dx_probe()
795 		if (ext4_dir_htree_level(dir->i_sb) < EXT4_HTREE_LEVEL) {  in dx_probe()
796 			ext4_warning(dir->i_sb, "Enable large directory "  in dx_probe()
805 	if (dx_get_limit(entries) != dx_root_limit(dir,  in dx_probe()
807 		ext4_warning_inode(dir, "dx entry: limit %u != root limit %u",  in dx_probe()
809 				   dx_root_limit(dir, root->info.info_length));  in dx_probe()
817 			ext4_warning_inode(dir,  in dx_probe()
858 		frame->bh = ext4_read_dirblock(dir, dx_get_block(at), INDEX);  in dx_probe()
866 		if (dx_get_limit(entries) != dx_node_limit(dir)) {  in dx_probe()
867 			ext4_warning_inode(dir,  in dx_probe()
869 				dx_get_limit(entries), dx_node_limit(dir));  in dx_probe()
880 		ext4_warning_inode(dir,  in dx_probe()
922 static int ext4_htree_next_block(struct inode *dir, __u32 hash,  in ext4_htree_next_block()  argument
968 		bh = ext4_read_dirblock(dir, dx_get_block(p->at), INDEX);  in ext4_htree_next_block()
986 				  struct inode *dir, ext4_lblk_t block,  in htree_dirblock_to_tree()  argument
997 	bh = ext4_read_dirblock(dir, block, DIRENT_HTREE);  in htree_dirblock_to_tree()
1003 					   dir->i_sb->s_blocksize -  in htree_dirblock_to_tree()
1007 	if (IS_ENCRYPTED(dir)) {  in htree_dirblock_to_tree()
1008 		err = fscrypt_get_encryption_info(dir);  in htree_dirblock_to_tree()
1013 		err = fscrypt_fname_alloc_buffer(dir, EXT4_NAME_LEN,  in htree_dirblock_to_tree()
1021 	for (; de < top; de = ext4_next_entry(de, dir->i_sb->s_blocksize)) {  in htree_dirblock_to_tree()
1022 		if (ext4_check_dir_entry(dir, NULL, de, bh,  in htree_dirblock_to_tree()
1024 				(block<<EXT4_BLOCK_SIZE_BITS(dir->i_sb))  in htree_dirblock_to_tree()
1029 		ext4fs_dirhash(dir, de->name, de->name_len, hinfo);  in htree_dirblock_to_tree()
1036 		if (!IS_ENCRYPTED(dir)) {  in htree_dirblock_to_tree()
1048 			err = fscrypt_fname_disk_to_usr(dir, hinfo->hash,  in htree_dirblock_to_tree()
1089 	struct inode *dir;  in ext4_htree_fill_tree()  local
1098 	dir = file_inode(dir_file);  in ext4_htree_fill_tree()
1099 	if (!(ext4_test_inode_flag(dir, EXT4_INODE_INDEX))) {  in ext4_htree_fill_tree()
1100 		hinfo.hash_version = EXT4_SB(dir->i_sb)->s_def_hash_version;  in ext4_htree_fill_tree()
1103 				EXT4_SB(dir->i_sb)->s_hash_unsigned;  in ext4_htree_fill_tree()
1104 		hinfo.seed = EXT4_SB(dir->i_sb)->s_hash_seed;  in ext4_htree_fill_tree()
1105 		if (ext4_has_inline_data(dir)) {  in ext4_htree_fill_tree()
1107 			count = ext4_inlinedir_to_tree(dir_file, dir, 0,  in ext4_htree_fill_tree()
1116 		count = htree_dirblock_to_tree(dir_file, dir, 0, &hinfo,  in ext4_htree_fill_tree()
1123 	frame = dx_probe(NULL, dir, &hinfo, frames);  in ext4_htree_fill_tree()
1140 		de = ext4_next_entry(de, dir->i_sb->s_blocksize);  in ext4_htree_fill_tree()
1157 		ret = htree_dirblock_to_tree(dir_file, dir, block, &hinfo,  in ext4_htree_fill_tree()
1165 		ret = ext4_htree_next_block(dir, HASH_NB_ALWAYS,  in ext4_htree_fill_tree()
1191 				  struct inode *dir,  in search_dirblock()  argument
1196 	return ext4_search_dir(bh, bh->b_data, dir->i_sb->s_blocksize, dir,  in search_dirblock()
1208 static int dx_make_map(struct inode *dir, struct ext4_dir_entry_2 *de,  in dx_make_map()  argument
1218 			ext4fs_dirhash(dir, de->name, de->name_len, &h);  in dx_make_map()
1310 void ext4_fname_setup_ci_filename(struct inode *dir, const struct qstr *iname,  in ext4_fname_setup_ci_filename()  argument
1315 	if (!IS_CASEFOLDED(dir) || !EXT4_SB(dir->i_sb)->s_encoding) {  in ext4_fname_setup_ci_filename()
1324 	len = utf8_casefold(EXT4_SB(dir->i_sb)->s_encoding,  in ext4_fname_setup_ci_filename()
1379 		    struct inode *dir, struct ext4_filename *fname,  in ext4_search_dir()  argument
1392 		    ext4_match(dir, fname, de)) {  in ext4_search_dir()
1395 			if (ext4_check_dir_entry(dir, NULL, de, bh, bh->b_data,  in ext4_search_dir()
1403 						dir->i_sb->s_blocksize);  in ext4_search_dir()
1412 static int is_dx_internal_node(struct inode *dir, ext4_lblk_t block,  in is_dx_internal_node()  argument
1415 	struct super_block *sb = dir->i_sb;  in is_dx_internal_node()
1417 	if (!is_dx(dir))  in is_dx_internal_node()
1439 static struct buffer_head *__ext4_find_entry(struct inode *dir,  in __ext4_find_entry()  argument
1457 	sb = dir->i_sb;  in __ext4_find_entry()
1462 	if (ext4_has_inline_data(dir)) {  in __ext4_find_entry()
1464 		ret = ext4_find_inline_entry(dir, fname, res_dir,  in __ext4_find_entry()
1483 	if (is_dx(dir)) {  in __ext4_find_entry()
1484 		ret = ext4_dx_find_entry(dir, fname, res_dir);  in __ext4_find_entry()
1496 	nblocks = dir->i_size >> EXT4_BLOCK_SIZE_BITS(sb);  in __ext4_find_entry()
1501 	start = EXT4_I(dir)->i_dir_start_lookup;  in __ext4_find_entry()
1518 			retval = ext4_bread_batch(dir, block, ra_max,  in __ext4_find_entry()
1530 			EXT4_ERROR_INODE(dir, "reading directory lblock %lu",  in __ext4_find_entry()
1537 		    !is_dx_internal_node(dir, block,  in __ext4_find_entry()
1539 		    !ext4_dirblock_csum_verify(dir, bh)) {  in __ext4_find_entry()
1540 			EXT4_ERROR_INODE(dir, "checksumming directory "  in __ext4_find_entry()
1547 		i = search_dirblock(bh, dir, fname,  in __ext4_find_entry()
1550 			EXT4_I(dir)->i_dir_start_lookup = block;  in __ext4_find_entry()
1568 	nblocks = dir->i_size >> EXT4_BLOCK_SIZE_BITS(sb);  in __ext4_find_entry()
1581 static struct buffer_head *ext4_find_entry(struct inode *dir,  in ext4_find_entry()  argument
1590 	err = ext4_fname_setup_filename(dir, d_name, 1, &fname);  in ext4_find_entry()
1596 	bh = __ext4_find_entry(dir, &fname, res_dir, inlined);  in ext4_find_entry()
1602 static struct buffer_head *ext4_lookup_entry(struct inode *dir,  in ext4_lookup_entry()  argument
1610 	err = ext4_fname_prepare_lookup(dir, dentry, &fname);  in ext4_lookup_entry()
1616 	bh = __ext4_find_entry(dir, &fname, res_dir, NULL);  in ext4_lookup_entry()
1622 static struct buffer_head * ext4_dx_find_entry(struct inode *dir,  in ext4_dx_find_entry()  argument
1626 	struct super_block * sb = dir->i_sb;  in ext4_dx_find_entry()
1635 	frame = dx_probe(fname, dir, NULL, frames);  in ext4_dx_find_entry()
1640 		bh = ext4_read_dirblock(dir, block, DIRENT_HTREE);  in ext4_dx_find_entry()
1644 		retval = search_dirblock(bh, dir, fname,  in ext4_dx_find_entry()
1656 		retval = ext4_htree_next_block(dir, fname->hinfo.hash, frame,  in ext4_dx_find_entry()
1659 			ext4_warning_inode(dir,  in ext4_dx_find_entry()
1675 static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)  in ext4_lookup()  argument
1684 	bh = ext4_lookup_entry(dir, dentry, &de);  in ext4_lookup()
1691 		if (!ext4_valid_inum(dir->i_sb, ino)) {  in ext4_lookup()
1692 			EXT4_ERROR_INODE(dir, "bad inode number: %u", ino);  in ext4_lookup()
1695 		if (unlikely(ino == dir->i_ino)) {  in ext4_lookup()
1696 			EXT4_ERROR_INODE(dir, "'%pd' linked to parent dir",  in ext4_lookup()
1700 		inode = ext4_iget(dir->i_sb, ino, EXT4_IGET_NORMAL);  in ext4_lookup()
1702 			EXT4_ERROR_INODE(dir,  in ext4_lookup()
1707 		if (!IS_ERR(inode) && IS_ENCRYPTED(dir) &&  in ext4_lookup()
1709 		    !fscrypt_has_permitted_context(dir, inode)) {  in ext4_lookup()
1712 				     dir->i_ino, inode->i_ino);  in ext4_lookup()
1719 	if (!inode && IS_CASEFOLDED(dir)) {  in ext4_lookup()
1810 static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,  in do_split()  argument
1814 	unsigned blocksize = dir->i_sb->s_blocksize;  in do_split()
1826 	if (ext4_has_metadata_csum(dir->i_sb))  in do_split()
1829 	bh2 = ext4_append(handle, dir, &newblock);  in do_split()
1850 	count = dx_make_map(dir, (struct ext4_dir_entry_2 *) data1,  in do_split()
1887 	dxtrace(dx_show_leaf(dir, hinfo, (struct ext4_dir_entry_2 *) data1,  in do_split()
1889 	dxtrace(dx_show_leaf(dir, hinfo, (struct ext4_dir_entry_2 *) data2,  in do_split()
1898 	err = ext4_handle_dirty_dirblock(handle, dir, bh2);  in do_split()
1901 	err = ext4_handle_dirty_dx_node(handle, dir, frame->bh);  in do_split()
1912 	ext4_std_error(dir->i_sb, err);  in do_split()
1916 int ext4_find_dest_de(struct inode *dir, struct inode *inode,  in ext4_find_dest_de()  argument
1931 		if (ext4_check_dir_entry(dir, NULL, de, bh,  in ext4_find_dest_de()
1934 		if (ext4_match(dir, fname, de))  in ext4_find_dest_de()
1983 			     struct inode *dir,  in add_dirent_to_buf()  argument
1987 	unsigned int	blocksize = dir->i_sb->s_blocksize;  in add_dirent_to_buf()
1995 		err = ext4_find_dest_de(dir, inode, bh, bh->b_data,  in add_dirent_to_buf()
2003 		ext4_std_error(dir->i_sb, err);  in add_dirent_to_buf()
2021 	dir->i_mtime = dir->i_ctime = current_time(dir);  in add_dirent_to_buf()
2022 	ext4_update_dx_flag(dir);  in add_dirent_to_buf()
2023 	inode_inc_iversion(dir);  in add_dirent_to_buf()
2024 	ext4_mark_inode_dirty(handle, dir);  in add_dirent_to_buf()
2026 	err = ext4_handle_dirty_dirblock(handle, dir, bh);  in add_dirent_to_buf()
2028 		ext4_std_error(dir->i_sb, err);  in add_dirent_to_buf()
2037 			    struct inode *dir,  in make_indexed_dir()  argument
2056 	blocksize =  dir->i_sb->s_blocksize;  in make_indexed_dir()
2057 	dxtrace(printk(KERN_DEBUG "Creating index: inode %lu\n", dir->i_ino));  in make_indexed_dir()
2061 		ext4_std_error(dir->i_sb, retval);  in make_indexed_dir()
2072 		EXT4_ERROR_INODE(dir, "invalid rec_len for '..'");  in make_indexed_dir()
2079 	bh2 = ext4_append(handle, dir, &block);  in make_indexed_dir()
2084 	ext4_set_inode_flag(dir, EXT4_INODE_INDEX);  in make_indexed_dir()
2104 	root->info.hash_version = EXT4_SB(dir->i_sb)->s_def_hash_version;  in make_indexed_dir()
2108 	dx_set_limit(entries, dx_root_limit(dir, sizeof(root->info)));  in make_indexed_dir()
2113 		fname->hinfo.hash_version += EXT4_SB(dir->i_sb)->s_hash_unsigned;  in make_indexed_dir()
2114 	fname->hinfo.seed = EXT4_SB(dir->i_sb)->s_hash_seed;  in make_indexed_dir()
2115 	ext4fs_dirhash(dir, fname_name(fname), fname_len(fname), &fname->hinfo);  in make_indexed_dir()
2123 	retval = ext4_handle_dirty_dx_node(handle, dir, frame->bh);  in make_indexed_dir()
2126 	retval = ext4_handle_dirty_dirblock(handle, dir, bh2);  in make_indexed_dir()
2130 	de = do_split(handle,dir, &bh2, frame, &fname->hinfo);  in make_indexed_dir()
2136 	retval = add_dirent_to_buf(handle, fname, dir, inode, de, bh2);  in make_indexed_dir()
2144 		ext4_mark_inode_dirty(handle, dir);  in make_indexed_dir()
2163 	struct inode *dir = d_inode(dentry->d_parent);  in ext4_add_entry()  local
2178 	sb = dir->i_sb;  in ext4_add_entry()
2185 	if (ext4_has_strict_mode(sbi) && IS_CASEFOLDED(dir) &&  in ext4_add_entry()
2190 	retval = ext4_fname_setup_filename(dir, &dentry->d_name, 0, &fname);  in ext4_add_entry()
2194 	if (ext4_has_inline_data(dir)) {  in ext4_add_entry()
2195 		retval = ext4_try_add_inline_entry(handle, &fname, dir, inode);  in ext4_add_entry()
2204 	if (is_dx(dir)) {  in ext4_add_entry()
2205 		retval = ext4_dx_add_entry(handle, &fname, dir, inode);  in ext4_add_entry()
2208 		ext4_clear_inode_flag(dir, EXT4_INODE_INDEX);  in ext4_add_entry()
2210 		ext4_mark_inode_dirty(handle, dir);  in ext4_add_entry()
2212 	blocks = dir->i_size >> sb->s_blocksize_bits;  in ext4_add_entry()
2214 		bh = ext4_read_dirblock(dir, block, DIRENT);  in ext4_add_entry()
2216 			bh = ext4_bread(handle, dir, block,  in ext4_add_entry()
2225 		retval = add_dirent_to_buf(handle, &fname, dir, inode,  in ext4_add_entry()
2232 			retval = make_indexed_dir(handle, &fname, dir,  in ext4_add_entry()
2239 	bh = ext4_append(handle, dir, &block);  in ext4_add_entry()
2253 	retval = add_dirent_to_buf(handle, &fname, dir, inode, de, bh);  in ext4_add_entry()
2266 			     struct inode *dir, struct inode *inode)  in ext4_dx_add_entry()  argument
2271 	struct super_block *sb = dir->i_sb;  in ext4_dx_add_entry()
2278 	frame = dx_probe(fname, dir, NULL, frames);  in ext4_dx_add_entry()
2283 	bh = ext4_read_dirblock(dir, dx_get_block(frame->at), DIRENT_HTREE);  in ext4_dx_add_entry()
2295 	err = add_dirent_to_buf(handle, fname, dir, inode, NULL, bh);  in ext4_dx_add_entry()
2327 					 dir->i_ino, levels);  in ext4_dx_add_entry()
2337 		bh2 = ext4_append(handle, dir, &newblock);  in ext4_dx_add_entry()
2367 			dx_set_limit(entries2, dx_node_limit(dir));  in ext4_dx_add_entry()
2379 			err = ext4_handle_dirty_dx_node(handle, dir, bh2);  in ext4_dx_add_entry()
2383 			err = ext4_handle_dirty_dx_node(handle, dir,  in ext4_dx_add_entry()
2388 				err = ext4_handle_dirty_dx_node(handle, dir,  in ext4_dx_add_entry()
2396 			dx_set_limit(entries2, dx_node_limit(dir));  in ext4_dx_add_entry()
2406 			err = ext4_handle_dirty_dx_node(handle, dir, frame->bh);  in ext4_dx_add_entry()
2409 			err = ext4_handle_dirty_dx_node(handle, dir, bh2);  in ext4_dx_add_entry()
2415 	de = do_split(handle, dir, &bh, frame, &fname->hinfo);  in ext4_dx_add_entry()
2420 	err = add_dirent_to_buf(handle, fname, dir, inode, de, bh);  in ext4_dx_add_entry()
2424 	ext4_std_error(dir->i_sb, err); /* this is a no-op if err == 0 */  in ext4_dx_add_entry()
2441 			      struct inode *dir,  in ext4_generic_delete_entry()  argument
2449 	unsigned int blocksize = dir->i_sb->s_blocksize;  in ext4_generic_delete_entry()
2456 		if (ext4_check_dir_entry(dir, NULL, de, bh,  in ext4_generic_delete_entry()
2469 			inode_inc_iversion(dir);  in ext4_generic_delete_entry()
2480 			     struct inode *dir,  in ext4_delete_entry()  argument
2486 	if (ext4_has_inline_data(dir)) {  in ext4_delete_entry()
2488 		err = ext4_delete_inline_entry(handle, dir, de_del, bh,  in ext4_delete_entry()
2494 	if (ext4_has_metadata_csum(dir->i_sb))  in ext4_delete_entry()
2502 	err = ext4_generic_delete_entry(handle, dir, de_del,  in ext4_delete_entry()
2504 					dir->i_sb->s_blocksize, csum_size);  in ext4_delete_entry()
2509 	err = ext4_handle_dirty_dirblock(handle, dir, bh);  in ext4_delete_entry()
2516 		ext4_std_error(dir->i_sb, err);  in ext4_delete_entry()
2573 static int ext4_create(struct inode *dir, struct dentry *dentry, umode_t mode,  in ext4_create()  argument
2580 	err = dquot_initialize(dir);  in ext4_create()
2584 	credits = (EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +  in ext4_create()
2587 	inode = ext4_new_inode_start_handle(dir, mode, &dentry->d_name, 0,  in ext4_create()
2596 		if (!err && IS_DIRSYNC(dir))  in ext4_create()
2601 	if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))  in ext4_create()
2606 static int ext4_mknod(struct inode *dir, struct dentry *dentry,  in ext4_mknod()  argument
2613 	err = dquot_initialize(dir);  in ext4_mknod()
2617 	credits = (EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +  in ext4_mknod()
2620 	inode = ext4_new_inode_start_handle(dir, mode, &dentry->d_name, 0,  in ext4_mknod()
2628 		if (!err && IS_DIRSYNC(dir))  in ext4_mknod()
2633 	if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))  in ext4_mknod()
2638 static int ext4_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)  in ext4_tmpfile()  argument
2644 	err = dquot_initialize(dir);  in ext4_tmpfile()
2649 	inode = ext4_new_inode_start_handle(dir, mode,  in ext4_tmpfile()
2652 			EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb) +  in ext4_tmpfile()
2669 	if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))  in ext4_tmpfile()
2706 static int ext4_init_new_dir(handle_t *handle, struct inode *dir,  in ext4_init_new_dir()  argument
2712 	unsigned int blocksize = dir->i_sb->s_blocksize;  in ext4_init_new_dir()
2716 	if (ext4_has_metadata_csum(dir->i_sb))  in ext4_init_new_dir()
2720 		err = ext4_try_create_inline_dir(handle, dir, inode);  in ext4_init_new_dir()
2732 	ext4_init_dot_dotdot(inode, de, blocksize, csum_size, dir->i_ino, 0);  in ext4_init_new_dir()
2747 static int ext4_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)  in ext4_mkdir()  argument
2753 	if (EXT4_DIR_LINK_MAX(dir))  in ext4_mkdir()
2756 	err = dquot_initialize(dir);  in ext4_mkdir()
2760 	credits = (EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +  in ext4_mkdir()
2763 	inode = ext4_new_inode_start_handle(dir, S_IFDIR | mode,  in ext4_mkdir()
2773 	err = ext4_init_new_dir(handle, dir, inode);  in ext4_mkdir()
2787 	ext4_inc_count(handle, dir);  in ext4_mkdir()
2788 	ext4_update_dx_flag(dir);  in ext4_mkdir()
2789 	err = ext4_mark_inode_dirty(handle, dir);  in ext4_mkdir()
2793 	if (IS_DIRSYNC(dir))  in ext4_mkdir()
2799 	if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))  in ext4_mkdir()
3053 static int ext4_rmdir(struct inode *dir, struct dentry *dentry)  in ext4_rmdir()  argument
3061 	if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb))))  in ext4_rmdir()
3066 	retval = dquot_initialize(dir);  in ext4_rmdir()
3074 	bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL);  in ext4_rmdir()
3090 	handle = ext4_journal_start(dir, EXT4_HT_DIR,  in ext4_rmdir()
3091 				    EXT4_DATA_TRANS_BLOCKS(dir->i_sb));  in ext4_rmdir()
3098 	if (IS_DIRSYNC(dir))  in ext4_rmdir()
3101 	retval = ext4_delete_entry(handle, dir, de, bh);  in ext4_rmdir()
3116 	inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode);  in ext4_rmdir()
3118 	ext4_dec_count(handle, dir);  in ext4_rmdir()
3119 	ext4_update_dx_flag(dir);  in ext4_rmdir()
3120 	ext4_mark_inode_dirty(handle, dir);  in ext4_rmdir()
3129 	if (IS_CASEFOLDED(dir))  in ext4_rmdir()
3140 static int ext4_unlink(struct inode *dir, struct dentry *dentry)  in ext4_unlink()  argument
3148 	if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb))))  in ext4_unlink()
3151 	trace_ext4_unlink_enter(dir, dentry);  in ext4_unlink()
3154 	retval = dquot_initialize(dir);  in ext4_unlink()
3162 	bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL);  in ext4_unlink()
3174 	handle = ext4_journal_start(dir, EXT4_HT_DIR,  in ext4_unlink()
3175 				    EXT4_DATA_TRANS_BLOCKS(dir->i_sb));  in ext4_unlink()
3182 	if (IS_DIRSYNC(dir))  in ext4_unlink()
3190 	retval = ext4_delete_entry(handle, dir, de, bh);  in ext4_unlink()
3193 	dir->i_ctime = dir->i_mtime = current_time(dir);  in ext4_unlink()
3194 	ext4_update_dx_flag(dir);  in ext4_unlink()
3195 	ext4_mark_inode_dirty(handle, dir);  in ext4_unlink()
3209 	if (IS_CASEFOLDED(dir))  in ext4_unlink()
3221 static int ext4_symlink(struct inode *dir,  in ext4_symlink()  argument
3230 	if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb))))  in ext4_symlink()
3233 	err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,  in ext4_symlink()
3238 	err = dquot_initialize(dir);  in ext4_symlink()
3249 		credits = 4 + EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb) +  in ext4_symlink()
3258 		credits = EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +  in ext4_symlink()
3262 	inode = ext4_new_inode_start_handle(dir, S_IFLNK|S_IRWXUGO,  in ext4_symlink()
3307 		handle = ext4_journal_start(dir, EXT4_HT_DIR,  in ext4_symlink()
3308 				EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +  in ext4_symlink()
3332 	if (!err && IS_DIRSYNC(dir))  in ext4_symlink()
3352 		     struct inode *dir, struct dentry *dentry)  in ext4_link()  argument
3361 	err = fscrypt_prepare_link(old_dentry, dir, dentry);  in ext4_link()
3365 	if ((ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) &&  in ext4_link()
3366 	    (!projid_eq(EXT4_I(dir)->i_projid,  in ext4_link()
3370 	err = dquot_initialize(dir);  in ext4_link()
3375 	handle = ext4_journal_start(dir, EXT4_HT_DIR,  in ext4_link()
3376 		(EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +  in ext4_link()
3381 	if (IS_DIRSYNC(dir))  in ext4_link()
3402 	if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))  in ext4_link()
3441 	struct inode *dir;  member
3467 	if (le32_to_cpu(ent->parent_de->inode) != ent->dir->i_ino)  in ext4_rename_dir_prepare()
3493 		ext4_std_error(ent->dir->i_sb, retval);  in ext4_rename_dir_finish()
3509 	if (ext4_has_feature_filetype(ent->dir->i_sb))  in ext4_setent()
3511 	inode_inc_iversion(ent->dir);  in ext4_setent()
3512 	ent->dir->i_ctime = ent->dir->i_mtime =  in ext4_setent()
3513 		current_time(ent->dir);  in ext4_setent()
3514 	ext4_mark_inode_dirty(handle, ent->dir);  in ext4_setent()
3517 		retval = ext4_handle_dirty_dirblock(handle, ent->dir, ent->bh);  in ext4_setent()
3519 			ext4_std_error(ent->dir->i_sb, retval);  in ext4_setent()
3529 static int ext4_find_delete_entry(handle_t *handle, struct inode *dir,  in ext4_find_delete_entry()  argument
3536 	bh = ext4_find_entry(dir, d_name, &de, NULL);  in ext4_find_delete_entry()
3540 		retval = ext4_delete_entry(handle, dir, de, bh);  in ext4_find_delete_entry()
3561 		retval = ext4_find_delete_entry(handle, ent->dir,  in ext4_rename_delete()
3564 		retval = ext4_delete_entry(handle, ent->dir, ent->de, ent->bh);  in ext4_rename_delete()
3566 			retval = ext4_find_delete_entry(handle, ent->dir,  in ext4_rename_delete()
3572 		ext4_warning_inode(ent->dir,  in ext4_rename_delete()
3574 				   ent->dir->i_nlink, retval);  in ext4_rename_delete()
3582 			ext4_dec_count(handle, ent->dir);  in ext4_update_dir_count()
3584 			ext4_inc_count(handle, ent->dir);  in ext4_update_dir_count()
3585 		ext4_mark_inode_dirty(handle, ent->dir);  in ext4_update_dir_count()
3600 	credits += (EXT4_MAXQUOTAS_TRANS_BLOCKS(ent->dir->i_sb) +  in ext4_whiteout_for_rename()
3603 	wh = ext4_new_inode_start_handle(ent->dir, S_IFCHR | WHITEOUT_MODE,  in ext4_whiteout_for_rename()
3612 		    ext4_should_retry_alloc(ent->dir->i_sb, &retries))  in ext4_whiteout_for_rename()
3636 		.dir = old_dir,  in ext4_rename()
3641 		.dir = new_dir,  in ext4_rename()
3662 	retval = dquot_initialize(old.dir);  in ext4_rename()
3665 	retval = dquot_initialize(new.dir);  in ext4_rename()
3677 	old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, NULL);  in ext4_rename()
3690 	new.bh = ext4_find_entry(new.dir, &new.dentry->d_name,  in ext4_rename()
3703 	if (new.inode && !test_opt(new.dir->i_sb, NO_AUTO_DA_ALLOC))  in ext4_rename()
3706 	credits = (2 * EXT4_DATA_TRANS_BLOCKS(old.dir->i_sb) +  in ext4_rename()
3709 		handle = ext4_journal_start(old.dir, EXT4_HT_DIR, credits);  in ext4_rename()
3724 	if (IS_DIRSYNC(old.dir) || IS_DIRSYNC(new.dir))  in ext4_rename()
3734 			if (new.dir != old.dir && EXT4_DIR_LINK_MAX(new.dir))  in ext4_rename()
3748 	force_reread = (new.dir->i_ino == old.dir->i_ino &&  in ext4_rename()
3749 			ext4_test_inode_flag(new.dir, EXT4_INODE_INLINE_DATA));  in ext4_rename()
3774 		force_reread = !ext4_test_inode_flag(new.dir,  in ext4_rename()
3795 	old.dir->i_ctime = old.dir->i_mtime = current_time(old.dir);  in ext4_rename()
3796 	ext4_update_dx_flag(old.dir);  in ext4_rename()
3798 		retval = ext4_rename_dir_finish(handle, &old, new.dir->i_ino);  in ext4_rename()
3802 		ext4_dec_count(handle, old.dir);  in ext4_rename()
3809 			ext4_inc_count(handle, new.dir);  in ext4_rename()
3810 			ext4_update_dx_flag(new.dir);  in ext4_rename()
3811 			ext4_mark_inode_dirty(handle, new.dir);  in ext4_rename()
3814 	ext4_mark_inode_dirty(handle, old.dir);  in ext4_rename()
3842 		.dir = old_dir,  in ext4_cross_rename()
3847 		.dir = new_dir,  in ext4_cross_rename()
3863 	retval = dquot_initialize(old.dir);  in ext4_cross_rename()
3866 	retval = dquot_initialize(new.dir);  in ext4_cross_rename()
3870 	old.bh = ext4_find_entry(old.dir, &old.dentry->d_name,  in ext4_cross_rename()
3884 	new.bh = ext4_find_entry(new.dir, &new.dentry->d_name,  in ext4_cross_rename()
3896 	handle = ext4_journal_start(old.dir, EXT4_HT_DIR,  in ext4_cross_rename()
3897 		(2 * EXT4_DATA_TRANS_BLOCKS(old.dir->i_sb) +  in ext4_cross_rename()
3905 	if (IS_DIRSYNC(old.dir) || IS_DIRSYNC(new.dir))  in ext4_cross_rename()
3925 	if (old.dir != new.dir && old.is_dir != new.is_dir) {  in ext4_cross_rename()
3929 		if ((old.dir_nlink_delta > 0 && EXT4_DIR_LINK_MAX(old.dir)) ||  in ext4_cross_rename()
3930 		    (new.dir_nlink_delta > 0 && EXT4_DIR_LINK_MAX(new.dir)))  in ext4_cross_rename()
3954 		retval = ext4_rename_dir_finish(handle, &old, new.dir->i_ino);  in ext4_cross_rename()
3959 		retval = ext4_rename_dir_finish(handle, &new, old.dir->i_ino);  in ext4_cross_rename()