From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262194AbVFUQeF (ORCPT ); Tue, 21 Jun 2005 12:34:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262182AbVFUQcb (ORCPT ); Tue, 21 Jun 2005 12:32:31 -0400 Received: from mtagate2.de.ibm.com ([195.212.29.151]:62445 "EHLO mtagate2.de.ibm.com") by vger.kernel.org with ESMTP id S262171AbVFUQYp (ORCPT ); Tue, 21 Jun 2005 12:24:45 -0400 Date: Tue, 21 Jun 2005 18:24:43 +0200 From: Martin Schwidefsky To: akpm@osdl.org, horst.hummel@de.ibm.com, linux-kernel@vger.kernel.org Subject: [patch 7/16] s390: fba dasd i/o errors. Message-ID: <20050621162443.GG6053@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org [patch 7/16] s390: fba dasd i/o errors. From: Horst Hummel The FBA discipline does not use retries for failed requests. A request fails after the first unsuccessful start attempt. There are some rare conditions (e.g. CIO path recovery) in which the start of an i/o on a fba device can fail. A tiny amount of retries is therefore reasonable. Signed-off-by: Martin Schwidefsky diffstat: drivers/s390/block/dasd_fba.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletion(-) diff -urpN linux-2.6/drivers/s390/block/dasd_fba.c linux-2.6-patched/drivers/s390/block/dasd_fba.c --- linux-2.6/drivers/s390/block/dasd_fba.c 2005-06-17 21:48:29.000000000 +0200 +++ linux-2.6-patched/drivers/s390/block/dasd_fba.c 2005-06-21 17:36:49.000000000 +0200 @@ -4,7 +4,7 @@ * Bugreports.to..: * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 * - * $Revision: 1.39 $ + * $Revision: 1.40 $ */ #include @@ -354,6 +354,8 @@ dasd_fba_build_cp(struct dasd_device * d } cqr->device = device; cqr->expires = 5 * 60 * HZ; /* 5 minutes */ + cqr->retries = 32; + cqr->buildclk = get_clock(); cqr->status = DASD_CQR_FILLED; return cqr; }