From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5B5E61170E for ; Mon, 11 Sep 2023 14:08:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CF6E0C433C8; Mon, 11 Sep 2023 14:07:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1694441280; bh=/P2dSr24EPMb+O8+dVhEMQxW7QMvV7AgZ/Rm4Bj9KVo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=h7wrNnEKkeG6qPTP8k81nZumJgiEp1FCkoVDAEQWE+371NusbZtVr9d2deKh6webW Azm7w7u0GfvBIZiVnBsDjCkJlDYCU8DB4Mx4jF4sFeFTWNm2bW9wjYRgVYkkY3Joip MiQO1rvHYDW870rcUrlYe3TJ9dpdSK0zdF5jx+5w= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yu Kuai , Xueshi Hu , Song Liu , Sasha Levin Subject: [PATCH 6.5 358/739] md/raid1: free the r1bio before waiting for blocked rdev Date: Mon, 11 Sep 2023 15:42:37 +0200 Message-ID: <20230911134701.138464290@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230911134650.921299741@linuxfoundation.org> References: <20230911134650.921299741@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Xueshi Hu [ Upstream commit 992db13a4aee766c8bfbf046ad15c2db5fa7cab8 ] Raid1 reshape will change mempool and r1conf::raid_disks which are needed to free r1bio. allow_barrier() make a concurrent raid1_reshape() possible. So, free the in-flight r1bio before waiting blocked rdev. Fixes: 6bfe0b499082 ("md: support blocking writes to an array on device failure") Reviewed-by: Yu Kuai Signed-off-by: Xueshi Hu Link: https://lore.kernel.org/r/20230814135356.1113639-3-xueshi.hu@smartx.com Signed-off-by: Song Liu Signed-off-by: Sasha Levin --- drivers/md/raid1.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index dd25832eb0452..f6a33c7824a70 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1373,6 +1373,7 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio, return; } + retry_write: r1_bio = alloc_r1bio(mddev, bio); r1_bio->sectors = max_write_sectors; @@ -1388,7 +1389,6 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio, */ disks = conf->raid_disks * 2; - retry_write: blocked_rdev = NULL; rcu_read_lock(); max_sectors = r1_bio->sectors; @@ -1468,7 +1468,7 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio, for (j = 0; j < i; j++) if (r1_bio->bios[j]) rdev_dec_pending(conf->mirrors[j].rdev, mddev); - r1_bio->state = 0; + free_r1bio(r1_bio); allow_barrier(conf, bio->bi_iter.bi_sector); if (bio->bi_opf & REQ_NOWAIT) { -- 2.40.1