On Thu, Sep 29, 2016 at 08:10:20PM -0700, Darrick J. Wong wrote: > Define a VFS function which allows userspace to request that the > kernel reflink a range of blocks between two files if the ranges' > contents match. The function fits the new VFS ioctl that standardizes > the checking for the btrfs EXTENT SAME ioctl. Nothing in the compare functionality is really XFS specific, so it might be a nice idea to share this between btrfs and XFS in the future and move it common code. Except for that this looks fine: Reviewed-by: Christoph Hellwig <hch@xxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html