From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753631AbaKLBWs (ORCPT ); Tue, 11 Nov 2014 20:22:48 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:58609 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753607AbaKLBWq (ORCPT ); Tue, 11 Nov 2014 20:22:46 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ilya Dryomov , Micha Krause , Sage Weil Subject: [PATCH 3.17 066/319] rbd: rbd workqueues need a resque worker Date: Wed, 12 Nov 2014 10:13:24 +0900 Message-Id: <20141112011003.554135655@linuxfoundation.org> X-Mailer: git-send-email 2.1.3 In-Reply-To: <20141112010952.553519040@linuxfoundation.org> References: <20141112010952.553519040@linuxfoundation.org> User-Agent: quilt/0.63-1 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ilya Dryomov commit 792c3a914910bd34302c5345578f85cfcb5e2c01 upstream. Need to use WQ_MEM_RECLAIM for our workqueues to prevent I/O lockups under memory pressure - we sit on the memory reclaim path. Signed-off-by: Ilya Dryomov Tested-by: Micha Krause Reviewed-by: Sage Weil Signed-off-by: Greg Kroah-Hartman --- drivers/block/rbd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -5087,7 +5087,8 @@ static int rbd_dev_device_setup(struct r set_capacity(rbd_dev->disk, rbd_dev->mapping.size / SECTOR_SIZE); set_disk_ro(rbd_dev->disk, rbd_dev->mapping.read_only); - rbd_dev->rq_wq = alloc_workqueue("%s", 0, 0, rbd_dev->disk->disk_name); + rbd_dev->rq_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, + rbd_dev->disk->disk_name); if (!rbd_dev->rq_wq) { ret = -ENOMEM; goto err_out_mapping;