2941 static int btrfs_cmp_data_prepare(struct inode *src, u64 loff,  in btrfs_cmp_data_prepare()  argument
2966 	ret = gather_extent_pages(src, cmp->src_pages, cmp->num_pages, loff);  in btrfs_cmp_data_prepare()
2978 static int btrfs_cmp_data(struct inode *src, u64 loff, struct inode *dst,  in btrfs_cmp_data()  argument
3041 static int btrfs_extent_same(struct inode *src, u64 loff, u64 olen,  in btrfs_extent_same()  argument
3060 		ret = extent_same_check_offsets(src, loff, &len, olen);  in btrfs_extent_same()
3084 		if (dst_loff + len > loff && dst_loff < loff + len) {  in btrfs_extent_same()
3089 		same_lock_start = min_t(u64, loff, dst_loff);  in btrfs_extent_same()
3090 		same_lock_len = max_t(u64, loff, dst_loff) + len - same_lock_start;  in btrfs_extent_same()
3094 		ret = extent_same_check_offsets(src, loff, &len, olen);  in btrfs_extent_same()
3111 	ret = btrfs_cmp_data_prepare(src, loff, dst, dst_loff, olen, &cmp);  in btrfs_extent_same()
3119 		ret = btrfs_double_extent_lock(src, loff, dst, dst_loff, len,  in btrfs_extent_same()
3139 			btrfs_wait_ordered_range(src, loff, len);  in btrfs_extent_same()
3152 	ret = btrfs_cmp_data(src, loff, dst, dst_loff, olen, &cmp);  in btrfs_extent_same()
3154 		ret = btrfs_clone(src, dst, loff, olen, len, dst_loff, 1);  in btrfs_extent_same()
3160 		btrfs_double_extent_unlock(src, loff, dst, dst_loff, len);  in btrfs_extent_same()