2882 	u64 alloc_start = round_down(offset, sectorsize);  in btrfs_zero_range()  local
2887 	em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, alloc_start,  in btrfs_zero_range()
2888 			      alloc_end - alloc_start);  in btrfs_zero_range()
2902 	if (em->start <= alloc_start &&  in btrfs_zero_range()
2921 		alloc_start = em_end;  in btrfs_zero_range()
2922 		ASSERT(IS_ALIGNED(alloc_start, sectorsize));  in btrfs_zero_range()
2923 		len = offset + len - alloc_start;  in btrfs_zero_range()
2924 		offset = alloc_start;  in btrfs_zero_range()
2931 		em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, alloc_start,  in btrfs_zero_range()
2955 		alloc_start = round_down(offset, sectorsize);  in btrfs_zero_range()
2956 		alloc_end = alloc_start + sectorsize;  in btrfs_zero_range()
2960 	alloc_start = round_up(offset, sectorsize);  in btrfs_zero_range()
2975 			alloc_start = round_down(offset, sectorsize);  in btrfs_zero_range()
3005 	if (alloc_start < alloc_end) {  in btrfs_zero_range()
3007 		const u64 lockstart = alloc_start;  in btrfs_zero_range()
3010 		bytes_to_reserve = alloc_end - alloc_start;  in btrfs_zero_range()
3019 						alloc_start, bytes_to_reserve);  in btrfs_zero_range()
3025 		ret = btrfs_prealloc_file_range(inode, mode, alloc_start,  in btrfs_zero_range()
3026 						alloc_end - alloc_start,  in btrfs_zero_range()
3041 					       alloc_start, bytes_to_reserve);  in btrfs_zero_range()
3058 	u64 alloc_start;  in btrfs_fallocate()  local
3074 	alloc_start = round_down(offset, blocksize);  in btrfs_fallocate()
3076 	cur_offset = alloc_start;  in btrfs_fallocate()
3105 	if (alloc_start > inode->i_size) {  in btrfs_fallocate()
3107 					alloc_start);  in btrfs_fallocate()
3129 	ret = btrfs_wait_ordered_range(inode, alloc_start,  in btrfs_fallocate()
3130 				       alloc_end - alloc_start);  in btrfs_fallocate()
3141 	lock_extent(&BTRFS_I(inode)->io_tree, alloc_start, locked_end,  in btrfs_fallocate()
3144 	btrfs_assert_inode_range_clean(BTRFS_I(inode), alloc_start, locked_end);  in btrfs_fallocate()
3230 	unlock_extent(&BTRFS_I(inode)->io_tree, alloc_start, locked_end,  in btrfs_fallocate()