From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=42061 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1P0AWF-0003Um-At for qemu-devel@nongnu.org; Mon, 27 Sep 2010 06:01:12 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1P0AUA-0002kE-Ad for qemu-devel@nongnu.org; Mon, 27 Sep 2010 05:59:03 -0400 Received: from mx1.redhat.com ([209.132.183.28]:18569) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1P0AUA-0002jf-31 for qemu-devel@nongnu.org; Mon, 27 Sep 2010 05:59:02 -0400 Message-ID: <4CA06ACD.3030406@redhat.com> Date: Mon, 27 Sep 2010 11:58:37 +0200 From: Avi Kivity MIME-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH 0/7] qed: Add QEMU Enhanced Disk format References: <1285256514-21138-1-git-send-email-stefanha@linux.vnet.ibm.com> In-Reply-To: <1285256514-21138-1-git-send-email-stefanha@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stefan Hajnoczi Cc: Kevin Wolf , Anthony Liguori , qemu-devel@nongnu.org, Christoph Hellwig On 09/23/2010 05:41 PM, Stefan Hajnoczi wrote: > Later patches will address the following points: > * Fine-grained L2 cache to allow for better request parallelism. Allocating > write requests are currently serialized. This will also fix the corner > case where a read request to the same sectors as a pending write request > looks at the backing file or zeroes instead of using the write request data. Is this really an issue? AFAIK a read is allowed to pass a previous uncompleted write. -- error compiling committee.c: too many arguments to function