409 	if (!ext4_inode_block_valid(inode, map->m_pblk, map->m_len)) {  in __check_block_validity()
413 				 map->m_pblk, map->m_len);  in __check_block_validity()
472 		       inode->i_ino, es_map->m_lblk, es_map->m_len,  in ext4_map_blocks_es_recheck()
474 		       map->m_len, map->m_pblk, map->m_flags,  in ext4_map_blocks_es_recheck()
516 		  flags, map->m_len, (unsigned long) map->m_lblk);  in ext4_map_blocks()
521 	if (unlikely(map->m_len > INT_MAX))  in ext4_map_blocks()
522 		map->m_len = INT_MAX;  in ext4_map_blocks()
537 			if (retval > map->m_len)  in ext4_map_blocks()
538 				retval = map->m_len;  in ext4_map_blocks()
539 			map->m_len = retval;  in ext4_map_blocks()
543 			if (retval > map->m_len)  in ext4_map_blocks()
544 				retval = map->m_len;  in ext4_map_blocks()
545 			map->m_len = retval;  in ext4_map_blocks()
570 		if (unlikely(retval != map->m_len)) {  in ext4_map_blocks()
574 				     inode->i_ino, retval, map->m_len);  in ext4_map_blocks()
583 				       map->m_lblk + map->m_len - 1))  in ext4_map_blocks()
586 					    map->m_len, map->m_pblk, status);  in ext4_map_blocks()
665 		if (unlikely(retval != map->m_len)) {  in ext4_map_blocks()
669 				     inode->i_ino, retval, map->m_len);  in ext4_map_blocks()
684 						 map->m_pblk, map->m_len);  in ext4_map_blocks()
705 				       map->m_lblk + map->m_len - 1))  in ext4_map_blocks()
707 		ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len,  in ext4_map_blocks()
734 			loff_t length = (loff_t)map->m_len << inode->i_blkbits;  in ext4_map_blocks()
749 					map->m_lblk + map->m_len - 1);  in ext4_map_blocks()
793 	map.m_len = bh->b_size >> inode->i_blkbits;  in _ext4_get_block()
800 		bh->b_size = inode->i_sb->s_blocksize * map.m_len;  in _ext4_get_block()
804 		bh->b_size = inode->i_sb->s_blocksize * map.m_len;  in _ext4_get_block()
848 	map.m_len = 1;  in ext4_getblk()
1746 	ext_debug(inode, "max_blocks %u, logical block %lu\n", map->m_len,  in ext4_da_map_blocks()
1770 		if (retval > map->m_len)  in ext4_da_map_blocks()
1771 			retval = map->m_len;  in ext4_da_map_blocks()
1772 		map->m_len = retval;  in ext4_da_map_blocks()
1820 		if (unlikely(retval != map->m_len)) {  in ext4_da_map_blocks()
1824 				     inode->i_ino, retval, map->m_len);  in ext4_da_map_blocks()
1830 		ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len,  in ext4_da_map_blocks()
1864 	map.m_len = 1;  in ext4_da_get_block_prep()
2186 		if (map->m_len == 0)  in mpage_add_bh_to_extent()
2192 	if (map->m_len == 0) {  in mpage_add_bh_to_extent()
2197 		map->m_len = 1;  in mpage_add_bh_to_extent()
2203 	if (map->m_len >= MAX_WRITEPAGES_EXTENT_LEN)  in mpage_add_bh_to_extent()
2207 	if (lblk == map->m_lblk + map->m_len &&  in mpage_add_bh_to_extent()
2209 		map->m_len++;  in mpage_add_bh_to_extent()
2249 			if (mpd->map.m_len)  in mpage_process_page_bufs()
2259 	if (mpd->map.m_len == 0) {  in mpage_process_page_bufs()
2303 		if (lblk >= mpd->map.m_lblk + mpd->map.m_len) {  in mpage_process_page()
2308 			mpd->map.m_len = 0;  in mpage_process_page()
2316 			if (!err && mpd->map.m_len && mpd->map.m_lblk > lblk) {  in mpage_process_page()
2371 	end = (mpd->map.m_lblk + mpd->map.m_len - 1) >> bpp_bits;  in mpage_map_and_submit_buffers()
2401 	mpd->map.m_len = 0;  in mpage_map_and_submit_buffers()
2453 	BUG_ON(map->m_len == 0);  in mpage_map_one_extent()
2518 				 (unsigned)map->m_len, -err);  in mpage_map_and_submit_extent()
2536 	} while (map->m_len);  in mpage_map_and_submit_extent()
2620 	mpd->map.m_len = 0;  in mpage_prepare_extent_to_map()
2643 			if (mpd->map.m_len > 0 && mpd->next_page != page->index)  in mpage_prepare_extent_to_map()
2681 			if (mpd->map.m_len == 0)  in mpage_prepare_extent_to_map()
2861 		if (!ret && mpd.map.m_len)  in ext4_writepages()
3436 	iomap->length = (u64) map->m_len << blkbits;  in ext4_set_iomap()
3474 	if (map->m_len > DIO_MAX_BLOCKS)  in ext4_iomap_alloc()
3475 		map->m_len = DIO_MAX_BLOCKS;  in ext4_iomap_alloc()
3476 	dio_credits = ext4_chunk_trans_blocks(inode, map->m_len);  in ext4_iomap_alloc()
3542 	map.m_len = min_t(loff_t, (offset + length - 1) >> blkbits,  in ext4_iomap_begin()
3571 	map.m_len = fscrypt_limit_io_blocks(inode, map.m_lblk, map.m_len);  in ext4_iomap_begin()
3624 	ext4_lblk_t offset = 0, end = map->m_lblk + map->m_len - 1;  in ext4_iomap_is_delalloc()
3633 		map->m_len = es.es_lblk - map->m_lblk;  in ext4_iomap_is_delalloc()
3638 	map->m_len = es.es_len - offset;  in ext4_iomap_is_delalloc()
3668 	map.m_len = min_t(loff_t, (offset + length - 1) >> blkbits,  in ext4_iomap_begin_report()