From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759183AbbEFE1G (ORCPT ); Wed, 6 May 2015 00:27:06 -0400 Received: from mail-pd0-f177.google.com ([209.85.192.177]:33255 "EHLO mail-pd0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759159AbbEFE1C (ORCPT ); Wed, 6 May 2015 00:27:02 -0400 From: Ming Lei To: Jens Axboe , linux-kernel@vger.kernel.org, Christoph Hellwig , Tejun Heo Cc: Andrew Morton , Alexander Viro , Jarod Wilson , David Herrmann , Markus Pargmann , nbd-general@lists.sourceforge.net, Stefan Haberland , Sebastian Ott , Fabian Frederick , Peter Zijlstra , linux-s390@vger.kernel.org, Stefan Weinhuber , Ming Lei Subject: [PATCH v3 7/7] s390/block/dasd: remove obsolete while -EBUSY loop Date: Wed, 6 May 2015 12:26:28 +0800 Message-Id: <1430886389-26878-8-git-send-email-ming.lei@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1430886389-26878-1-git-send-email-ming.lei@canonical.com> References: <1430886389-26878-1-git-send-email-ming.lei@canonical.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jarod Wilson With the mutex_trylock bit gone from blkdev_reread_part(), the retry logic in dasd_scan_partitions() shouldn't be necessary. CC: Christoph Hellwig CC: Jens Axboe CC: Tejun Heo CC: Alexander Viro CC: Markus Pargmann CC: Stefan Weinhuber CC: Stefan Haberland CC: Sebastian Ott CC: Fabian Frederick CC: Ming Lei CC: David Herrmann CC: Andrew Morton CC: Peter Zijlstra CC: nbd-general@lists.sourceforge.net CC: linux-s390@vger.kernel.org Reviewed-by: Christoph Hellwig Acked-by: Sebastian Ott Signed-off-by: Ming Lei Signed-off-by: Jarod Wilson --- drivers/s390/block/dasd_genhd.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c index 2af4619..ef1d9fb 100644 --- a/drivers/s390/block/dasd_genhd.c +++ b/drivers/s390/block/dasd_genhd.c @@ -99,9 +99,8 @@ void dasd_gendisk_free(struct dasd_block *block) int dasd_scan_partitions(struct dasd_block *block) { struct block_device *bdev; - int retry, rc; + int rc; - retry = 5; bdev = bdget_disk(block->gdp, 0); if (!bdev) { DBF_DEV_EVENT(DBF_ERR, block->base, "%s", @@ -118,14 +117,9 @@ int dasd_scan_partitions(struct dasd_block *block) } rc = blkdev_reread_part(bdev); - while (rc == -EBUSY && retry > 0) { - schedule(); - rc = blkdev_reread_part(bdev); - retry--; + if (rc) DBF_DEV_EVENT(DBF_ERR, block->base, - "scan partitions error, retry %d rc %d", - retry, rc); - } + "scan partitions error, rc %d", rc); /* * Since the matching blkdev_put call to the blkdev_get in -- 1.9.1