400 	if (!ext4_inode_block_valid(inode, map->m_pblk, map->m_len)) {  in __check_block_validity()
404 				 map->m_pblk, map->m_len);  in __check_block_validity()
491 		       inode->i_ino, es_map->m_lblk, es_map->m_len,  in ext4_map_blocks_es_recheck()
493 		       map->m_len, map->m_pblk, map->m_flags,  in ext4_map_blocks_es_recheck()
511 	WARN_ON_ONCE(orig_mlen <= map->m_len);  in ext4_map_query_blocks_next_in_leaf()
514 	map2.m_lblk = map->m_lblk + map->m_len;  in ext4_map_query_blocks_next_in_leaf()
515 	map2.m_len = orig_mlen - map->m_len;  in ext4_map_query_blocks_next_in_leaf()
520 		ext4_es_cache_extent(inode, map->m_lblk, map->m_len,  in ext4_map_query_blocks_next_in_leaf()
522 		return map->m_len;  in ext4_map_query_blocks_next_in_leaf()
525 	if (unlikely(retval != map2.m_len)) {  in ext4_map_query_blocks_next_in_leaf()
529 			     inode->i_ino, retval, map2.m_len);  in ext4_map_query_blocks_next_in_leaf()
540 	if (map->m_pblk + map->m_len == map2.m_pblk &&  in ext4_map_query_blocks_next_in_leaf()
543 				     map->m_len + map2.m_len, map->m_pblk,  in ext4_map_query_blocks_next_in_leaf()
545 		map->m_len += map2.m_len;  in ext4_map_query_blocks_next_in_leaf()
547 		ext4_es_cache_extent(inode, map->m_lblk, map->m_len,  in ext4_map_query_blocks_next_in_leaf()
551 	return map->m_len;  in ext4_map_query_blocks_next_in_leaf()
559 	unsigned int orig_mlen = map->m_len;  in ext4_map_query_blocks()
573 	if (unlikely(retval != map->m_len)) {  in ext4_map_query_blocks()
577 			     inode->i_ino, retval, map->m_len);  in ext4_map_query_blocks()
587 			map->m_len == orig_mlen) {  in ext4_map_query_blocks()
590 		ext4_es_cache_extent(inode, map->m_lblk, map->m_len,  in ext4_map_query_blocks()
641 	if (unlikely(retval != map->m_len)) {  in ext4_map_create_blocks()
645 			     inode->i_ino, retval, map->m_len);  in ext4_map_create_blocks()
659 					 map->m_len);  in ext4_map_create_blocks()
666 	ext4_es_insert_extent(inode, map->m_lblk, map->m_len, map->m_pblk,  in ext4_map_create_blocks()
702 	unsigned int orig_mlen = map->m_len;  in ext4_map_blocks()
711 		  flags, map->m_len, (unsigned long) map->m_lblk);  in ext4_map_blocks()
716 	if (unlikely(map->m_len > INT_MAX))  in ext4_map_blocks()
717 		map->m_len = INT_MAX;  in ext4_map_blocks()
741 			if (retval > map->m_len)  in ext4_map_blocks()
742 				retval = map->m_len;  in ext4_map_blocks()
743 			map->m_len = retval;  in ext4_map_blocks()
749 			if (retval > map->m_len)  in ext4_map_blocks()
750 				retval = map->m_len;  in ext4_map_blocks()
751 			map->m_len = retval;  in ext4_map_blocks()
764 				orig_mlen == map->m_len)  in ext4_map_blocks()
767 		map->m_len = orig_mlen;  in ext4_map_blocks()
843 			loff_t length = EXT4_LBLK_TO_B(inode, map->m_len);  in ext4_map_blocks()
856 			    map->m_len - 1);  in ext4_map_blocks()
917 	map.m_len = bh->b_size >> inode->i_blkbits;  in _ext4_get_block()
924 		bh->b_size = inode->i_sb->s_blocksize * map.m_len;  in _ext4_get_block()
928 		bh->b_size = inode->i_sb->s_blocksize * map.m_len;  in _ext4_get_block()
986 	map.m_len = 1;  in ext4_getblk()
1913 	ext_debug(inode, "max_blocks %u, logical block %lu\n", map->m_len,  in ext4_da_map_blocks()
1920 		map->m_len = min_t(unsigned int, map->m_len,  in ext4_da_map_blocks()
1973 		map->m_len = min_t(unsigned int, map->m_len,  in ext4_da_map_blocks()
1989 	retval = ext4_insert_delayed_blocks(inode, map->m_lblk, map->m_len);  in ext4_da_map_blocks()
2023 	map.m_len = 1;  in ext4_da_get_block_prep()
2127 		if (map->m_len == 0)  in mpage_add_bh_to_extent()
2133 	if (map->m_len == 0) {  in mpage_add_bh_to_extent()
2138 		map->m_len = 1;  in mpage_add_bh_to_extent()
2144 	if (map->m_len >= MAX_WRITEPAGES_EXTENT_LEN)  in mpage_add_bh_to_extent()
2148 	if (lblk == map->m_lblk + map->m_len &&  in mpage_add_bh_to_extent()
2150 		map->m_len++;  in mpage_add_bh_to_extent()
2190 			if (mpd->map.m_len)  in mpage_process_page_bufs()
2200 	if (mpd->map.m_len == 0) {  in mpage_process_page_bufs()
2245 		if (lblk >= mpd->map.m_lblk + mpd->map.m_len) {  in mpage_process_folio()
2250 			mpd->map.m_len = 0;  in mpage_process_folio()
2257 			if (!err && mpd->map.m_len && mpd->map.m_lblk > lblk) {  in mpage_process_folio()
2311 	end = EXT4_LBLK_TO_PG(inode, mpd->map.m_lblk + mpd->map.m_len - 1);  in mpage_map_and_submit_buffers()
2341 	mpd->map.m_len = 0;  in mpage_map_and_submit_buffers()
2395 	BUG_ON(map->m_len == 0);  in mpage_map_one_extent()
2508 				 (unsigned)map->m_len, -err);  in mpage_map_and_submit_extent()
2526 	} while (map->m_len);  in mpage_map_and_submit_extent()
2632 	mpd->map.m_len = 0;  in mpage_prepare_extent_to_map()
2660 			    EXT4_LBLK_TO_PG(mpd->inode, mpd->map.m_len))  in mpage_prepare_extent_to_map()
2664 			if (mpd->map.m_len > 0 &&  in mpage_prepare_extent_to_map()
2710 			if (mpd->map.m_len == 0)  in mpage_prepare_extent_to_map()
2934 		if (!ret && mpd->map.m_len)  in ext4_do_writepages()
3483 	iomap->length = EXT4_LBLK_TO_B(inode, map->m_len);  in ext4_set_iomap()
3521 	unsigned int m_len = map->m_len;  in ext4_map_blocks_atomic_write_slow()  local
3566 		next_pblk = map->m_pblk + map->m_len;  in ext4_map_blocks_atomic_write_slow()
3569 		mapped_len += map->m_len;  in ext4_map_blocks_atomic_write_slow()
3570 		map->m_lblk += map->m_len;  in ext4_map_blocks_atomic_write_slow()
3571 		map->m_len = m_len - mapped_len;  in ext4_map_blocks_atomic_write_slow()
3572 	} while (mapped_len < m_len);  in ext4_map_blocks_atomic_write_slow()
3581 	map->m_len = m_len;  in ext4_map_blocks_atomic_write_slow()
3586 	if (ret != m_len) {  in ext4_map_blocks_atomic_write_slow()
3589 			m_lblk, m_len, ret);  in ext4_map_blocks_atomic_write_slow()
3597 	map->m_len = m_len;  in ext4_map_blocks_atomic_write_slow()
3626 	unsigned int m_len = map->m_len;  in ext4_map_blocks_atomic_write()  local
3629 	WARN_ON_ONCE(m_len > 1 && !ext4_has_feature_bigalloc(inode->i_sb));  in ext4_map_blocks_atomic_write()
3632 	if (ret < 0 || ret == m_len)  in ext4_map_blocks_atomic_write()
3640 	map->m_len = m_len;  in ext4_map_blocks_atomic_write()
3664 	if (map->m_len > DIO_MAX_BLOCKS)  in ext4_iomap_alloc()
3665 		map->m_len = DIO_MAX_BLOCKS;  in ext4_iomap_alloc()
3674 		unsigned int orig_mlen = map->m_len;  in ext4_iomap_alloc()
3679 		if (map->m_len < orig_mlen) {  in ext4_iomap_alloc()
3680 			map->m_len = orig_mlen;  in ext4_iomap_alloc()
3682 							     map->m_len);  in ext4_iomap_alloc()
3685 							      map->m_len);  in ext4_iomap_alloc()
3688 		dio_credits = ext4_chunk_trans_blocks(inode, map->m_len);  in ext4_iomap_alloc()
3776 	map.m_len = min_t(loff_t, (offset + length - 1) >> blkbits,  in ext4_iomap_begin()
3778 	orig_mlen = map.m_len;  in ext4_iomap_begin()
3805 			map.m_len = orig_mlen;  in ext4_iomap_begin()
3820 	map.m_len = fscrypt_limit_io_blocks(inode, map.m_lblk, map.m_len);  in ext4_iomap_begin()
3827 		if (map.m_len < (length >> blkbits)) {  in ext4_iomap_begin()
3865 	map.m_len = min_t(loff_t, (offset + length - 1) >> blkbits,  in ext4_iomap_begin_report()