From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59066) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fJGcx-0007D2-GB for qemu-devel@nongnu.org; Thu, 17 May 2018 06:59:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fJGcs-0007Ry-PH for qemu-devel@nongnu.org; Thu, 17 May 2018 06:59:19 -0400 Date: Thu, 17 May 2018 11:59:05 +0100 From: Anthony PERARD Message-ID: <20180517105905.GL2057@perard.uk.xensource.com> References: <1525461967-32174-1-git-send-email-paul.durrant@citrix.com> <1525461967-32174-8-git-send-email-paul.durrant@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <1525461967-32174-8-git-send-email-paul.durrant@citrix.com> Subject: Re: [Qemu-devel] [PATCH v3 7/8] xen_disk: use a single entry iovec List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paul Durrant Cc: xen-devel@lists.xenproject.org, qemu-block@nongnu.org, qemu-devel@nongnu.org, Stefano Stabellini , Kevin Wolf , Max Reitz On Fri, May 04, 2018 at 08:26:06PM +0100, Paul Durrant wrote: > Since xen_disk now always copies data to and from a guest there is no need > to maintain a vector entry corresponding to every page of a request. > This means there is less per-request state to maintain so the ioreq > structure can shrink significantly. > > Signed-off-by: Paul Durrant Acked-by: Anthony PERARD -- Anthony PERARD