On Wed, Nov 28, 2018 at 08:00:10AM +0100, Christoph Hellwig wrote: > On Wed, Nov 28, 2018 at 10:20:01AM +0800, Ming Lei wrote: > > On Mon, Nov 26, 2018 at 10:33:32AM -0700, Jens Axboe wrote: > > > On 11/26/18 9:54 AM, Keith Busch wrote: > > > > The iterative update to the previous version taking into account review > > > > comments. > > > > > > > > Background: > > > > > > > > The main objective is to remove the generic block layer's lock prefix > > > > currently required to transition a request to its completed state by > > > > shifting that expense to lower level drivers that actually need it, > > > > and removing the software layering violation that was required to use > > > > that mechnaism. > > > > > > Thanks Keith, added for 4.21. > > > > Hi Jens & Keith, > > > > Seems this patchset causes the following kernel panic, since not see > > this issue with commit 4ab32bf3305e > > Is this the nvme target on top of null_blk? Yes. Thanks, Ming