From mboxrd@z Thu Jan 1 00:00:00 1970 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=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,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 C4FBAC61CE8 for ; Sat, 19 Jan 2019 18:05:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 939BC2087E for ; Sat, 19 Jan 2019 18:05:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="UkL0pU3t" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728892AbfASSFQ (ORCPT ); Sat, 19 Jan 2019 13:05:16 -0500 Received: from mail-qt1-f195.google.com ([209.85.160.195]:36785 "EHLO mail-qt1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728668AbfASSFP (ORCPT ); Sat, 19 Jan 2019 13:05:15 -0500 Received: by mail-qt1-f195.google.com with SMTP id t13so18823014qtn.3 for ; Sat, 19 Jan 2019 10:05:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=Xam2qz/iGZ2SU9NuNxXD/C9OzO4f5Xq2vH+9/0d7tVw=; b=UkL0pU3tdzXtytpB3DbrJUcKw/8NxBnYXSpmwtXHHh0R4iL2Mx9RB5RYDYSJeeCRYy 3PslZyC4PMF716nTYbe1Tn+g6qC0aEBvMXcqw0GK/XkfKtDcY18OzCKMWqh3PwHmhuqS TIHekK7rGpTZMec2AAHYutFl2Rz7+CZomjgwujekSWl3WBCiIUmuYEndnKlGoVx3uZrO m4GNBXvK39bm8YvGWyRZT7PRtXuO7qndG1/KWaiKyKxfZMI/F3aEPRntgLsAaayDvA5v hfNK6yHfFk5IirSOi3sxJRsJNZVfxKs9OHdc/tCx+yeP7FXx86pVPVNzdSAqPdvHZOlC jvoQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=Xam2qz/iGZ2SU9NuNxXD/C9OzO4f5Xq2vH+9/0d7tVw=; b=EaC91pQ0zmE7ZJG9W2yQVdihx2HXloP4G2dDhC11zoD7G0vPdqHjBMRKKSUDq5r3XZ V5HGqQCL1fJisVMGun5UWPBYZK3+UGCLaV5Cp97Vn+khXW/lqwZRQELjLn5wMeXibUe0 +owrV1qD0z/Oq4PhSimk5nzGUOvXwKpLqiPDOr7BK5I1D3e0J0Sdg6fUpP+Mb+e/HO69 wHDcP33cv8AFK+We78M9pE5etRU66h+a5OtgU5d5kbLezWuCkZSMK96QsZPabeAbONsy CN5NLnd6posUWzCqB3uuPCxElPmBHaGfRZ4EsZaPmfEI0NZS932qT6Z8CV/rn4ly6L3Y v/5A== X-Gm-Message-State: AJcUukfPPX6HEKWzF5SV9FSU5y7zzdMp8oHylkWRX6Ef61kZmQHJHv+j TS/6IGNY2q+8INHw3mapwVg= X-Google-Smtp-Source: ALg8bN7yTv8YKdR7o1QnjRohywutXXp77B/qhQzlxPgyK/2Y/13Afm3nB5navmTvsFkD8HTFqOhXlA== X-Received: by 2002:aed:3b76:: with SMTP id q51mr20739358qte.229.1547921114718; Sat, 19 Jan 2019 10:05:14 -0800 (PST) Received: from localhost (pool-68-160-176-113.bstnma.fios.verizon.net. [68.160.176.113]) by smtp.gmail.com with ESMTPSA id o21sm64275035qto.18.2019.01.19.10.05.13 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 19 Jan 2019 10:05:13 -0800 (PST) From: Mike Snitzer To: dm-devel@redhat.com Cc: NeilBrown , Ming Lei , axboe@kernel.dk, linux-block@vger.kernel.org Subject: [PATCH 3/4] dm: fix missing bio_split() pattern code in __split_and_process_bio() Date: Sat, 19 Jan 2019 13:05:05 -0500 Message-Id: <20190119180506.1300-4-snitzer@redhat.com> X-Mailer: git-send-email 2.15.0 In-Reply-To: <20190119180506.1300-1-snitzer@redhat.com> References: <20190119180506.1300-1-snitzer@redhat.com> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Use the same BIO_QUEUE_ENTERED pattern that was established by commit cd4a4ae4683dc ("block: don't use blocking queue entered for recursive bio submits") by setting BIO_QUEUE_ENTERED after bio_split() and before recursing via generic_make_request(). Also add trace_block_split() because it provides useful context about bio splits in blktrace. Depends-on: cd4a4ae4683dc ("block: don't use blocking queue entered for recursive bio submits") Fixes: 18a25da84354 ("dm: ensure bio submission follows a depth-first tree walk") Cc: stable@vger.kernel.org # 4.16+ Signed-off-by: Mike Snitzer --- drivers/md/dm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index fbadda68e23b..6e29c2d99b99 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1654,7 +1654,9 @@ static blk_qc_t __split_and_process_bio(struct mapped_device *md, sectors[op_stat_group(bio_op(bio))], ci.sector_count); part_stat_unlock(); + bio_set_flag(bio, BIO_QUEUE_ENTERED); bio_chain(b, bio); + trace_block_split(md->queue, b, bio->bi_iter.bi_sector); ret = generic_make_request(bio); break; } -- 2.15.0