2201 	struct extent_map *em;  in find_first_non_hole()  local
2204 	em = btrfs_get_extent(inode, NULL,  in find_first_non_hole()
2207 	if (IS_ERR(em))  in find_first_non_hole()
2208 		return PTR_ERR(em);  in find_first_non_hole()
2211 	if (em->disk_bytenr == EXTENT_MAP_HOLE) {  in find_first_non_hole()
2213 		*len = em->start + em->len > *start + *len ?  in find_first_non_hole()
2214 		       0 : *start + *len - em->start - em->len;  in find_first_non_hole()
2215 		*start = em->start + em->len;  in find_first_non_hole()
2217 	free_extent_map(em);  in find_first_non_hole()
2860 	struct extent_map *em;  in btrfs_zero_range_check_range_boundary()  local
2864 	em = btrfs_get_extent(inode, NULL, offset, sectorsize);  in btrfs_zero_range_check_range_boundary()
2865 	if (IS_ERR(em))  in btrfs_zero_range_check_range_boundary()
2866 		return PTR_ERR(em);  in btrfs_zero_range_check_range_boundary()
2868 	if (em->disk_bytenr == EXTENT_MAP_HOLE)  in btrfs_zero_range_check_range_boundary()
2870 	else if (em->flags & EXTENT_FLAG_PREALLOC)  in btrfs_zero_range_check_range_boundary()
2875 	free_extent_map(em);  in btrfs_zero_range_check_range_boundary()
2885 	struct extent_map *em;  in btrfs_zero_range()  local
2895 	em = btrfs_get_extent(BTRFS_I(inode), NULL, alloc_start,  in btrfs_zero_range()
2897 	if (IS_ERR(em)) {  in btrfs_zero_range()
2898 		ret = PTR_ERR(em);  in btrfs_zero_range()
2910 	if (em->start <= alloc_start && (em->flags & EXTENT_FLAG_PREALLOC)) {  in btrfs_zero_range()
2911 		const u64 em_end = em->start + em->len;  in btrfs_zero_range()
2919 			free_extent_map(em);  in btrfs_zero_range()
2932 		alloc_hint = extent_map_block_start(em) + em->len;  in btrfs_zero_range()
2934 	free_extent_map(em);  in btrfs_zero_range()
2938 		em = btrfs_get_extent(BTRFS_I(inode), NULL, alloc_start, sectorsize);  in btrfs_zero_range()
2939 		if (IS_ERR(em)) {  in btrfs_zero_range()
2940 			ret = PTR_ERR(em);  in btrfs_zero_range()
2944 		if (em->flags & EXTENT_FLAG_PREALLOC) {  in btrfs_zero_range()
2945 			free_extent_map(em);  in btrfs_zero_range()
2950 		if (len < sectorsize && em->disk_bytenr != EXTENT_MAP_HOLE) {  in btrfs_zero_range()
2951 			free_extent_map(em);  in btrfs_zero_range()
2960 		free_extent_map(em);  in btrfs_zero_range()
3072 	struct extent_map *em;  in btrfs_fallocate()  local
3154 		em = btrfs_get_extent(BTRFS_I(inode), NULL, cur_offset,  in btrfs_fallocate()
3156 		if (IS_ERR(em)) {  in btrfs_fallocate()
3157 			ret = PTR_ERR(em);  in btrfs_fallocate()
3160 		last_byte = min(extent_map_end(em), alloc_end);  in btrfs_fallocate()
3161 		actual_end = min_t(u64, extent_map_end(em), offset + len);  in btrfs_fallocate()
3163 		if (em->disk_bytenr == EXTENT_MAP_HOLE ||  in btrfs_fallocate()
3165 		     !(em->flags & EXTENT_FLAG_PREALLOC))) {  in btrfs_fallocate()
3170 				free_extent_map(em);  in btrfs_fallocate()
3176 				free_extent_map(em);  in btrfs_fallocate()
3182 		free_extent_map(em);  in btrfs_fallocate()