From patchwork Mon Jan 18 11:34:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 366944 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D7812C433DB for ; Mon, 18 Jan 2021 11:39:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 84B3D222BB for ; Mon, 18 Jan 2021 11:39:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390479AbhARLif (ORCPT ); Mon, 18 Jan 2021 06:38:35 -0500 Received: from mail.kernel.org ([198.145.29.99]:33366 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390459AbhARLiZ (ORCPT ); Mon, 18 Jan 2021 06:38:25 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 95FFD22571; Mon, 18 Jan 2021 11:37:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1610969864; bh=fDcmRewYY45QhZR1SsyvSl3BaLmXgP5QHjio6wrtFbA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RRS8FG/7IYXRuA2+g6FXPeJ9MNcLm5erbHDYSbgBv3hP28f8r6BLWWoWsZ2shKvI9 8Gxg50yhOFqlxkAEk60SUvDRRH10MoAgfhD+h3fucI4YWkn+csPsGumQMw9uMhR15r l9UHoMfYGWDOac7zpectwP48G+GhEX3+yGlWQ4F8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zdenek Kabelac , Mikulas Patocka , =?utf-8?q?Stephan_B?= =?utf-8?q?=C3=A4rwolf?= , Mike Snitzer Subject: [PATCH 5.4 14/76] dm raid: fix discard limits for raid1 Date: Mon, 18 Jan 2021 12:34:14 +0100 Message-Id: <20210118113341.672098414@linuxfoundation.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210118113340.984217512@linuxfoundation.org> References: <20210118113340.984217512@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mike Snitzer commit cc07d72bf350b77faeffee1c37bc52197171473f upstream. Block core warned that discard_granularity was 0 for dm-raid with personality of raid1. Reason is that raid_io_hints() was incorrectly special-casing raid1 rather than raid0. Fix raid_io_hints() by removing discard limits settings for raid1. Check for raid0 instead. Fixes: 61697a6abd24a ("dm: eliminate 'split_discard_bios' flag from DM target interface") Cc: stable@vger.kernel.org Reported-by: Zdenek Kabelac Reported-by: Mikulas Patocka Reported-by: Stephan Bärwolf Signed-off-by: Mike Snitzer Signed-off-by: Greg Kroah-Hartman --- drivers/md/dm-raid.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -3744,10 +3744,10 @@ static void raid_io_hints(struct dm_targ blk_limits_io_opt(limits, chunk_size_bytes * mddev_data_stripes(rs)); /* - * RAID1 and RAID10 personalities require bio splitting, - * RAID0/4/5/6 don't and process large discard bios properly. + * RAID0 and RAID10 personalities require bio splitting, + * RAID1/4/5/6 don't and process large discard bios properly. */ - if (rs_is_raid1(rs) || rs_is_raid10(rs)) { + if (rs_is_raid0(rs) || rs_is_raid10(rs)) { limits->discard_granularity = chunk_size_bytes; limits->max_discard_sectors = rs->md.chunk_sectors; }