From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH 01/10] block: make generic_make_request handle arbitrarily sized bios Date: Tue, 28 Apr 2015 13:43:20 +0200 Message-ID: <20150428114320.GA9790@lst.de> References: <1430203717-13307-1-git-send-email-mlin@kernel.org> <1430203717-13307-2-git-send-email-mlin@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1430203717-13307-2-git-send-email-mlin@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Ming Lin Cc: linux-kernel@vger.kernel.org, Christoph Hellwig , Jens Axboe , Kent Overstreet , Dongsu Park , Christoph Hellwig , Al Viro , Ming Lei , Neil Brown , Alasdair Kergon , Mike Snitzer , dm-devel@redhat.com, Lars Ellenberg , drbd-user@lists.linbit.com, Jiri Kosina , Geoff Levand , Jim Paris , Joshua Morris , Philip Kelleher , Minchan Kim , Nitin Gupta , Oleg Drokin , Andreas Dilger , Keith Busch List-Id: dm-devel.ids This seems to lack support for QUEUE_FLAG_SG_GAPS to work around the retarded PPR format in the NVMe driver. I'm actually not sure we have a way to reproduce them for BLOCK_PC requests, but I think we should make sure to properly handle them. Maybe Keith or Jens have a good reproducer for these.