On Sat, Sep 10, 2016 at 09:52:21AM +1000, Dave Chinner wrote: > > vfs_copy_file_range() implementation because ovl_copy_up_data() > > splices in small chunks allowing the user to kill the copying process. > > This makes sense because the poor process only called open(), > > so the app writer may not have been expecting a stall of copying > > a large file... > > So call vfs_copy_file_range() iteratively, just like is being done > right now for do_splice_direct() to limit latency on kill. I wish vfs_copy_file_range would do useful chinking itself. But either way it might be a good idea to call vfs_clone_file_range first, because that gives your a very efficient copy without the need to copy anything if supported. -- 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
