Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755303Ab0HDEfK (ORCPT ); Wed, 4 Aug 2010 00:35:10 -0400 Received: from mail2.microsoft.com ([131.107.115.215]:49069 "EHLO smtp.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755111Ab0HDEfH convert rfc822-to-8bit (ORCPT ); Wed, 4 Aug 2010 00:35:07 -0400 From: Hank Janssen To: Greg KH CC: "'linux-kernel@vger.kernel.org'" , "'devel@driverdev.osuosl.org'" , "'virtualization@lists.osdl.org'" , "Haiyang Zhang" Subject: RE: [PATCH 1/6] staging: hv: Fixed bounce kmap problem by using correct index Thread-Topic: [PATCH 1/6] staging: hv: Fixed bounce kmap problem by using correct index Thread-Index: AcszLH4zXLsEPQuASP+5uxzSPyjpcgAQLtUAAAgzgxA= Date: Wed, 4 Aug 2010 04:35:06 +0000 Message-ID: <8AFC7968D54FB448A30D8F38F259C56223FE8B19@TK5EX14MBXC114.redmond.corp.microsoft.com> References: <8AFC7968D54FB448A30D8F38F259C56223FD0D21@TK5EX14MBXC114.redmond.corp.microsoft.com> <20100803173732.GA1455@suse.de> In-Reply-To: <20100803173732.GA1455@suse.de> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [157.54.123.12] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1026 Lines: 25 And then Greg spoke: >>On Tue, Aug 03, 2010 at 05:31:51PM +0000, Hank Janssen wrote: >> From: Hank Janssen >> > >Fixed bounce offset kmap problem by using correct index > >Is this a bugfix that needs to go to previous kernel releases? If so, which ones? What is the symptom of the problem here? Yes, this should be backported to all stable kernel releases that have the Hyper-V drivers In them. The symptom of the problem is that in some NAS appliances this problem represents Itself by a unresponsive VM under a load with many clients writing small files. I actually goofed up in my previous code and used an incorrect index number For this part of the code. It should have shown up in more situations than what I have seen oddly enough. Hank. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/