373 				struct ext4_map_blocks *map)  in __check_block_validity()  argument
375 	if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), map->m_pblk,  in __check_block_validity()
376 				   map->m_len)) {  in __check_block_validity()
377 		ext4_error_inode(inode, func, line, map->m_pblk,  in __check_block_validity()
379 				 "(length %d)", (unsigned long) map->m_lblk,  in __check_block_validity()
380 				 map->m_len);  in __check_block_validity()
386 #define check_block_validity(inode, map)	\  argument
387 	__check_block_validity((inode), __func__, __LINE__, (map))
393 				       struct ext4_map_blocks *map,  in ext4_map_blocks_es_recheck()  argument
398 	map->m_flags = 0;  in ext4_map_blocks_es_recheck()
409 		retval = ext4_ext_map_blocks(handle, inode, map, flags &  in ext4_map_blocks_es_recheck()
412 		retval = ext4_ind_map_blocks(handle, inode, map, flags &  in ext4_map_blocks_es_recheck()
422 	if (es_map->m_lblk != map->m_lblk ||  in ext4_map_blocks_es_recheck()
423 	    es_map->m_flags != map->m_flags ||  in ext4_map_blocks_es_recheck()
424 	    es_map->m_pblk != map->m_pblk) {  in ext4_map_blocks_es_recheck()
429 		       es_map->m_pblk, es_map->m_flags, map->m_lblk,  in ext4_map_blocks_es_recheck()
430 		       map->m_len, map->m_pblk, map->m_flags,  in ext4_map_blocks_es_recheck()
459 		    struct ext4_map_blocks *map, int flags)  in ext4_map_blocks()  argument
467 	memcpy(&orig_map, map, sizeof(*map));  in ext4_map_blocks()
470 	map->m_flags = 0;  in ext4_map_blocks()
472 		  "logical block %lu\n", inode->i_ino, flags, map->m_len,  in ext4_map_blocks()
473 		  (unsigned long) map->m_lblk);  in ext4_map_blocks()
478 	if (unlikely(map->m_len > INT_MAX))  in ext4_map_blocks()
479 		map->m_len = INT_MAX;  in ext4_map_blocks()
482 	if (unlikely(map->m_lblk >= EXT_MAX_BLOCKS))  in ext4_map_blocks()
486 	if (ext4_es_lookup_extent(inode, map->m_lblk, &es)) {  in ext4_map_blocks()
488 			map->m_pblk = ext4_es_pblock(&es) +  in ext4_map_blocks()
489 					map->m_lblk - es.es_lblk;  in ext4_map_blocks()
490 			map->m_flags |= ext4_es_is_written(&es) ?  in ext4_map_blocks()
492 			retval = es.es_len - (map->m_lblk - es.es_lblk);  in ext4_map_blocks()
493 			if (retval > map->m_len)  in ext4_map_blocks()
494 				retval = map->m_len;  in ext4_map_blocks()
495 			map->m_len = retval;  in ext4_map_blocks()
502 		ext4_map_blocks_es_recheck(handle, inode, map,  in ext4_map_blocks()
515 		retval = ext4_ext_map_blocks(handle, inode, map, flags &  in ext4_map_blocks()
518 		retval = ext4_ind_map_blocks(handle, inode, map, flags &  in ext4_map_blocks()
524 		if (unlikely(retval != map->m_len)) {  in ext4_map_blocks()
528 				     inode->i_ino, retval, map->m_len);  in ext4_map_blocks()
532 		status = map->m_flags & EXT4_MAP_UNWRITTEN ?  in ext4_map_blocks()
536 		    ext4_find_delalloc_range(inode, map->m_lblk,  in ext4_map_blocks()
537 					     map->m_lblk + map->m_len - 1))  in ext4_map_blocks()
539 		ret = ext4_es_insert_extent(inode, map->m_lblk,  in ext4_map_blocks()
540 					    map->m_len, map->m_pblk, status);  in ext4_map_blocks()
548 	if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) {  in ext4_map_blocks()
549 		ret = check_block_validity(inode, map);  in ext4_map_blocks()
565 	if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED)  in ext4_map_blocks()
578 	map->m_flags &= ~EXT4_MAP_FLAGS;  in ext4_map_blocks()
593 		retval = ext4_ext_map_blocks(handle, inode, map, flags);  in ext4_map_blocks()
595 		retval = ext4_ind_map_blocks(handle, inode, map, flags);  in ext4_map_blocks()
597 		if (retval > 0 && map->m_flags & EXT4_MAP_NEW) {  in ext4_map_blocks()
620 		if (unlikely(retval != map->m_len)) {  in ext4_map_blocks()
624 				     inode->i_ino, retval, map->m_len);  in ext4_map_blocks()
633 		    ext4_es_lookup_extent(inode, map->m_lblk, &es)) {  in ext4_map_blocks()
637 		status = map->m_flags & EXT4_MAP_UNWRITTEN ?  in ext4_map_blocks()
641 		    ext4_find_delalloc_range(inode, map->m_lblk,  in ext4_map_blocks()
642 					     map->m_lblk + map->m_len - 1))  in ext4_map_blocks()
644 		ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len,  in ext4_map_blocks()
645 					    map->m_pblk, status);  in ext4_map_blocks()
652 	if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) {  in ext4_map_blocks()
653 		ret = check_block_validity(inode, map);  in ext4_map_blocks()
695 	struct ext4_map_blocks map;  in _ext4_get_block()  local
702 	map.m_lblk = iblock;  in _ext4_get_block()
703 	map.m_len = bh->b_size >> inode->i_blkbits;  in _ext4_get_block()
707 		if (map.m_len > DIO_MAX_BLOCKS)  in _ext4_get_block()
708 			map.m_len = DIO_MAX_BLOCKS;  in _ext4_get_block()
709 		dio_credits = ext4_chunk_trans_blocks(inode, map.m_len);  in _ext4_get_block()
719 	ret = ext4_map_blocks(handle, inode, &map, flags);  in _ext4_get_block()
723 		map_bh(bh, inode->i_sb, map.m_pblk);  in _ext4_get_block()
724 		ext4_update_bh_state(bh, map.m_flags);  in _ext4_get_block()
737 		bh->b_size = inode->i_sb->s_blocksize * map.m_len;  in _ext4_get_block()
758 	struct ext4_map_blocks map;  in ext4_getblk()  local
765 	map.m_lblk = block;  in ext4_getblk()
766 	map.m_len = 1;  in ext4_getblk()
767 	err = ext4_map_blocks(handle, inode, &map, map_flags);  in ext4_getblk()
774 	bh = sb_getblk(inode->i_sb, map.m_pblk);  in ext4_getblk()
777 	if (map.m_flags & EXT4_MAP_NEW) {  in ext4_getblk()
1457 	struct ext4_map_blocks map;  member
1539 			      struct ext4_map_blocks *map,  in ext4_da_map_blocks()  argument
1548 	memcpy(&orig_map, map, sizeof(*map));  in ext4_da_map_blocks()
1554 	map->m_flags = 0;  in ext4_da_map_blocks()
1556 		  "logical block %lu\n", inode->i_ino, map->m_len,  in ext4_da_map_blocks()
1557 		  (unsigned long) map->m_lblk);  in ext4_da_map_blocks()
1578 		map->m_pblk = ext4_es_pblock(&es) + iblock - es.es_lblk;  in ext4_da_map_blocks()
1580 		if (retval > map->m_len)  in ext4_da_map_blocks()
1581 			retval = map->m_len;  in ext4_da_map_blocks()
1582 		map->m_len = retval;  in ext4_da_map_blocks()
1584 			map->m_flags |= EXT4_MAP_MAPPED;  in ext4_da_map_blocks()
1586 			map->m_flags |= EXT4_MAP_UNWRITTEN;  in ext4_da_map_blocks()
1591 		ext4_map_blocks_es_recheck(NULL, inode, map, &orig_map, 0);  in ext4_da_map_blocks()
1604 		retval = ext4_ext_map_blocks(NULL, inode, map, 0);  in ext4_da_map_blocks()
1606 		retval = ext4_ind_map_blocks(NULL, inode, map, 0);  in ext4_da_map_blocks()
1621 		    !ext4_find_delalloc_cluster(inode, map->m_lblk)) {  in ext4_da_map_blocks()
1630 		ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len,  in ext4_da_map_blocks()
1644 		if (unlikely(retval != map->m_len)) {  in ext4_da_map_blocks()
1648 				     inode->i_ino, retval, map->m_len);  in ext4_da_map_blocks()
1652 		status = map->m_flags & EXT4_MAP_UNWRITTEN ?  in ext4_da_map_blocks()
1654 		ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len,  in ext4_da_map_blocks()
1655 					    map->m_pblk, status);  in ext4_da_map_blocks()
1681 	struct ext4_map_blocks map;  in ext4_da_get_block_prep()  local
1687 	map.m_lblk = iblock;  in ext4_da_get_block_prep()
1688 	map.m_len = 1;  in ext4_da_get_block_prep()
1695 	ret = ext4_da_map_blocks(inode, iblock, &map, bh);  in ext4_da_get_block_prep()
1699 	map_bh(bh, inode->i_sb, map.m_pblk);  in ext4_da_get_block_prep()
1700 	ext4_update_bh_state(bh, map.m_flags);  in ext4_da_get_block_prep()
1974 	struct ext4_map_blocks *map = &mpd->map;  in mpage_add_bh_to_extent()  local
1980 		if (map->m_len == 0)  in mpage_add_bh_to_extent()
1986 	if (map->m_len == 0) {  in mpage_add_bh_to_extent()
1987 		map->m_lblk = lblk;  in mpage_add_bh_to_extent()
1988 		map->m_len = 1;  in mpage_add_bh_to_extent()
1989 		map->m_flags = bh->b_state & BH_FLAGS;  in mpage_add_bh_to_extent()
1994 	if (map->m_len >= MAX_WRITEPAGES_EXTENT_LEN)  in mpage_add_bh_to_extent()
1998 	if (lblk == map->m_lblk + map->m_len &&  in mpage_add_bh_to_extent()
1999 	    (bh->b_state & BH_FLAGS) == map->m_flags) {  in mpage_add_bh_to_extent()
2000 		map->m_len++;  in mpage_add_bh_to_extent()
2037 			if (mpd->map.m_len)  in mpage_process_page_bufs()
2044 	if (mpd->map.m_len == 0) {  in mpage_process_page_bufs()
2078 	start = mpd->map.m_lblk >> bpp_bits;  in mpage_map_and_submit_buffers()
2079 	end = (mpd->map.m_lblk + mpd->map.m_len - 1) >> bpp_bits;  in mpage_map_and_submit_buffers()
2081 	pblock = mpd->map.m_pblk;  in mpage_map_and_submit_buffers()
2098 				if (lblk < mpd->map.m_lblk)  in mpage_map_and_submit_buffers()
2100 				if (lblk >= mpd->map.m_lblk + mpd->map.m_len) {  in mpage_map_and_submit_buffers()
2105 					mpd->map.m_len = 0;  in mpage_map_and_submit_buffers()
2106 					mpd->map.m_flags = 0;  in mpage_map_and_submit_buffers()
2145 	mpd->map.m_len = 0;  in mpage_map_and_submit_buffers()
2146 	mpd->map.m_flags = 0;  in mpage_map_and_submit_buffers()
2153 	struct ext4_map_blocks *map = &mpd->map;  in mpage_map_one_extent()  local
2157 	trace_ext4_da_write_pages_extent(inode, map);  in mpage_map_one_extent()
2178 	if (map->m_flags & (1 << BH_Delay))  in mpage_map_one_extent()
2181 	err = ext4_map_blocks(handle, inode, map, get_blocks_flags);  in mpage_map_one_extent()
2184 	if (dioread_nolock && (map->m_flags & EXT4_MAP_UNWRITTEN)) {  in mpage_map_one_extent()
2193 	BUG_ON(map->m_len == 0);  in mpage_map_one_extent()
2194 	if (map->m_flags & EXT4_MAP_NEW) {  in mpage_map_one_extent()
2198 		for (i = 0; i < map->m_len; i++)  in mpage_map_one_extent()
2199 			unmap_underlying_metadata(bdev, map->m_pblk + i);  in mpage_map_one_extent()
2229 	struct ext4_map_blocks *map = &mpd->map;  in mpage_map_and_submit_extent()  local
2235 				((loff_t)map->m_lblk) << inode->i_blkbits;  in mpage_map_and_submit_extent()
2259 				 (unsigned long long)map->m_lblk,  in mpage_map_and_submit_extent()
2260 				 (unsigned)map->m_len, -err);  in mpage_map_and_submit_extent()
2278 	} while (map->m_len);  in mpage_map_and_submit_extent()
2361 	mpd->map.m_len = 0;  in mpage_prepare_extent_to_map()
2394 			if (mpd->map.m_len > 0 && mpd->next_page != page->index)  in mpage_prepare_extent_to_map()
2416 			if (mpd->map.m_len == 0)  in mpage_prepare_extent_to_map()
2579 			if (mpd.map.m_len)  in ext4_writepages()