Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752448AbaJFLs4 (ORCPT ); Mon, 6 Oct 2014 07:48:56 -0400 Received: from e06smtp16.uk.ibm.com ([195.75.94.112]:58539 "EHLO e06smtp16.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751387AbaJFLsx (ORCPT ); Mon, 6 Oct 2014 07:48:53 -0400 Date: Mon, 6 Oct 2014 13:48:45 +0200 From: Cornelia Huck To: "Michael S. Tsirkin" Cc: linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org Subject: Re: [PATCH 07/16] virtio-blk: drop config_mutex Message-ID: <20141006134845.157ba74f.cornelia.huck@de.ibm.com> In-Reply-To: <1412525038-15871-8-git-send-email-mst@redhat.com> References: <1412525038-15871-1-git-send-email-mst@redhat.com> <1412525038-15871-8-git-send-email-mst@redhat.com> Organization: IBM Deutschland Research & Development GmbH Vorsitzende des Aufsichtsrats: Martina Koederitz =?UTF-8?B?R2VzY2jDpGZ0c2bDvGhydW5nOg==?= Dirk Wittkopp Sitz der Gesellschaft: =?UTF-8?B?QsO2Ymxpbmdlbg==?= Registergericht: Amtsgericht Stuttgart, HRB 243294 X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14100611-3548-0000-0000-000001C41B58 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 5 Oct 2014 19:07:10 +0300 "Michael S. Tsirkin" wrote: > config_mutex served two purposes: prevent multiple concurrent config > change handlers, and synchronize access to config_enable flag. > > Since commit dbf2576e37da0fcc7aacbfbb9fd5d3de7888a3c1 > workqueue: make all workqueues non-reentrant > all workqueues are non-reentrant, and config_enable > is now gone. > > Get rid of the unnecessary lock. > > Signed-off-by: Michael S. Tsirkin > --- > drivers/block/virtio_blk.c | 8 -------- > 1 file changed, 8 deletions(-) > Reviewed-by: Cornelia Huck -- 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/