2188 	struct extent_map *em;  in find_first_non_hole()  local
2191 	em = btrfs_get_extent(inode, NULL,  in find_first_non_hole()
2194 	if (IS_ERR(em))  in find_first_non_hole()
2195 		return PTR_ERR(em);  in find_first_non_hole()
2198 	if (em->disk_bytenr == EXTENT_MAP_HOLE) {  in find_first_non_hole()
2199 		const u64 em_end = btrfs_extent_map_end(em);  in find_first_non_hole()
2205 	btrfs_free_extent_map(em);  in find_first_non_hole()
2899 	struct extent_map *em;  in btrfs_zero_range_check_range_boundary()  local
2903 	em = btrfs_get_extent(inode, NULL, offset, sectorsize);  in btrfs_zero_range_check_range_boundary()
2904 	if (IS_ERR(em))  in btrfs_zero_range_check_range_boundary()
2905 		return PTR_ERR(em);  in btrfs_zero_range_check_range_boundary()
2907 	if (em->disk_bytenr == EXTENT_MAP_HOLE)  in btrfs_zero_range_check_range_boundary()
2909 	else if (em->flags & EXTENT_FLAG_PREALLOC)  in btrfs_zero_range_check_range_boundary()
2914 	btrfs_free_extent_map(em);  in btrfs_zero_range_check_range_boundary()
2924 	struct extent_map *em;  in btrfs_zero_range()  local
2936 	em = btrfs_get_extent(BTRFS_I(inode), NULL, alloc_start,  in btrfs_zero_range()
2938 	if (IS_ERR(em)) {  in btrfs_zero_range()
2939 		ret = PTR_ERR(em);  in btrfs_zero_range()
2951 	if (em->start <= alloc_start && (em->flags & EXTENT_FLAG_PREALLOC)) {  in btrfs_zero_range()
2952 		const u64 em_end = btrfs_extent_map_end(em);  in btrfs_zero_range()
2960 			btrfs_free_extent_map(em);  in btrfs_zero_range()
2973 		alloc_hint = btrfs_extent_map_block_start(em) + em->len;  in btrfs_zero_range()
2975 	btrfs_free_extent_map(em);  in btrfs_zero_range()
2979 		em = btrfs_get_extent(BTRFS_I(inode), NULL, alloc_start, sectorsize);  in btrfs_zero_range()
2980 		if (IS_ERR(em)) {  in btrfs_zero_range()
2981 			ret = PTR_ERR(em);  in btrfs_zero_range()
2985 		if (em->flags & EXTENT_FLAG_PREALLOC) {  in btrfs_zero_range()
2986 			btrfs_free_extent_map(em);  in btrfs_zero_range()
2991 		if (len < sectorsize && em->disk_bytenr != EXTENT_MAP_HOLE) {  in btrfs_zero_range()
2992 			btrfs_free_extent_map(em);  in btrfs_zero_range()
3001 		btrfs_free_extent_map(em);  in btrfs_zero_range()
3114 	struct extent_map *em;  in btrfs_fallocate()  local
3200 		em = btrfs_get_extent(BTRFS_I(inode), NULL, cur_offset,  in btrfs_fallocate()
3202 		if (IS_ERR(em)) {  in btrfs_fallocate()
3203 			ret = PTR_ERR(em);  in btrfs_fallocate()
3206 		last_byte = min(btrfs_extent_map_end(em), alloc_end);  in btrfs_fallocate()
3207 		actual_end = min_t(u64, btrfs_extent_map_end(em), offset + len);  in btrfs_fallocate()
3209 		if (em->disk_bytenr == EXTENT_MAP_HOLE ||  in btrfs_fallocate()
3211 		     !(em->flags & EXTENT_FLAG_PREALLOC))) {  in btrfs_fallocate()
3216 				btrfs_free_extent_map(em);  in btrfs_fallocate()
3222 				btrfs_free_extent_map(em);  in btrfs_fallocate()
3228 		btrfs_free_extent_map(em);  in btrfs_fallocate()