Messages in this thread | | | Date | Tue, 12 May 2015 00:25:23 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH v3 3/4] block: loop: use kthread_work |
| |
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.
| |