From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:55674 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754583AbeDFN3Q (ORCPT ); Fri, 6 Apr 2018 09:29:16 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, NeilBrown , Guoqing Jiang , Shaohua Li , Ben Hutchings Subject: [PATCH 3.18 90/93] md/raid10: reset the first at the end of loop Date: Fri, 6 Apr 2018 15:23:59 +0200 Message-Id: <20180406084229.103773273@linuxfoundation.org> In-Reply-To: <20180406084224.918716300@linuxfoundation.org> References: <20180406084224.918716300@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Guoqing Jiang commit 6f287ca6046edd34ed83aafb7f9033c9c2e809e2 upstream. We need to set "first = 0' at the end of rdev_for_each loop, so we can get the array's min_offset_diff correctly otherwise min_offset_diff just means the last rdev's offset diff. [only the first chunk, due to b506335e5d2b ("md/raid10: skip spare disk as 'first' disk") being already applied - gregkh] Suggested-by: NeilBrown Signed-off-by: Guoqing Jiang Reviewed-by: NeilBrown Signed-off-by: Shaohua Li Cc: Ben Hutchings Signed-off-by: Greg Kroah-Hartman --- drivers/md/raid10.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3717,6 +3717,7 @@ static int run(struct mddev *mddev) if (blk_queue_discard(bdev_get_queue(rdev->bdev))) discard_supported = true; + first = 0; } if (mddev->queue) {