From patchwork Fri Oct 26 06:24:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ming Lei X-Patchwork-Id: 10656971 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 350DF5A4 for ; Fri, 26 Oct 2018 06:25:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1A9CE2838F for ; Fri, 26 Oct 2018 06:25:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0EBAE283C5; Fri, 26 Oct 2018 06:25:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B34062C54A for ; Fri, 26 Oct 2018 06:24:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726159AbeJZPAi (ORCPT ); Fri, 26 Oct 2018 11:00:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:39898 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725893AbeJZPAh (ORCPT ); Fri, 26 Oct 2018 11:00:37 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 810F23DBEB; Fri, 26 Oct 2018 06:24:56 +0000 (UTC) Received: from localhost (ovpn-8-16.pek2.redhat.com [10.72.8.16]) by smtp.corp.redhat.com (Postfix) with ESMTP id A5CF460F80; Fri, 26 Oct 2018 06:24:50 +0000 (UTC) From: Ming Lei To: Jens Axboe Cc: linux-block@vger.kernel.org, Ming Lei , Rui Salvaterra , stable@vger.kernel.org, Mike Snitzer , Christoph Hellwig , Xiao Ni , Mariusz Dabrowski Subject: [PATCH 1/3] block: make sure discard bio is aligned with logical block size Date: Fri, 26 Oct 2018 14:24:33 +0800 Message-Id: <20181026062435.21398-2-ming.lei@redhat.com> In-Reply-To: <20181026062435.21398-1-ming.lei@redhat.com> References: <20181026062435.21398-1-ming.lei@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Fri, 26 Oct 2018 06:24:56 +0000 (UTC) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Obviously the created discard bio has to be aligned with logical block size. Fixes: 744889b7cbb56a6 ("block: don't deal with discard limit in blkdev_issue_discard()") Reported-by: Rui Salvaterra Cc: Rui Salvaterra Cc: stable@vger.kernel.org Cc: Mike Snitzer Cc: Christoph Hellwig Cc: Xiao Ni Cc: Mariusz Dabrowski Signed-off-by: Ming Lei --- block/blk-lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-lib.c b/block/blk-lib.c index bbd44666f2b5..aa3944946b2f 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -59,7 +59,7 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector, if (!req_sects) goto fail; if (req_sects > UINT_MAX >> 9) - req_sects = UINT_MAX >> 9; + req_sects = (UINT_MAX >> 9) & ~bs_mask; end_sect = sector + req_sects;