On Thu, Sep 26, 2013 at 9:06 PM, Zach Brown <zab@xxxxxxxxxx> wrote: >> But I'm not sure it's worth the effort; 99% of the use of this >> interface will be copying whole files. And for that perhaps we need a >> different API, one which has been discussed some time ago: >> asynchronous copyfile() returns immediately with a pollable event >> descriptor indicating copy progress, and some way to cancel the copy. >> And that can internally rely on ->direct_splice(), with appropriate >> algorithms for determine the optimal chunk size. > > And perhaps we don't. Perhaps we can provide this much simpler > data-plane interface that works well enough for most everyone and can > avoid going down the async rat hole, yet again. I think either buffering or async is needed to get good perforrmace without too much complexity in the app (which is not good). Buffering works quite well for regular I/O, so maybe its the way to go here as well. Thanks, Miklos -- 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
