On Tue, May 12, 2015 at 3:25 PM, Christoph Hellwig <[email protected]> wrote: > On Mon, May 11, 2015 at 09:12:56PM +0800, Ming Lei wrote: >> For non-AIO case, single thread has been used for long long time, >> and it was just converted to work in v4.0, which has caused performance >> regression for fedora live booting already. In discussion[1], even though >> submitting I/O via work concurrently can improve random IO throughput, >> meantime it may hurt sequential IO performance, so maybe better to restore >> to single thread behaviour. > > Then justify the change based on the non-aio use case and document that > in the changelog.
OK, will add that in v4. Thanks, Ming -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
