From nobody Mon Jun 8 06:36:51 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 E00DE4176F8; Fri, 5 Jun 2026 09:16:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780650977; cv=none; b=mvGDYIAZiStJr2KZgZuu+SEUMEDQdrJIvl0Awp6WdqebiuunJc7QH9QrZJjIgiQv0qb320TNCgP+nIOdz0ITriBj9GiQBf/QGFAUmahOGPj0XtOgd/r4qGZraBrqL+q35Gxw9DQJd85FEpk3etRz8MgM9zqo+2NMdBsCMG/hmKQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780650977; c=relaxed/simple; bh=ELRMYTPU8gAhxV4u4ZVDRuoWiBYsiEsfGOWon/nznAo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YoH7ydvdDMuKF9bgWwau9prvzS9NagJj0i1zZtzPZpDobSGVsKr+4PM1O5sb3WB/+9aUl16QJAc5ySPys+WYUGkrWg5AdQHb9Vz57kk6PSJ5rEw9Hq2JqC3gVdKNsoqPWDTYkS/VJvnTJwPyxBPuvkaXHJq+rIfcAgkxgOMGE1I= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZJ7CYY+v; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZJ7CYY+v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C10B1F00898; Fri, 5 Jun 2026 09:16:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780650976; bh=PrlGm7aeNwyYNwipQJn09/8Qa5CW03DvtiihC72MfGc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ZJ7CYY+v7iQJYEx51sZC9WaJu3q/ZOrcf+YGJMx/mlmcchEr3GNajvJ8iKnoBfVh1 UNOd66BSw5JO9/Uh06F+c8g8L4fJv/7MFy4NxPnNtnS0pLHuqAiygIDn0xAuQDELjK 3oH8mXNZhAgKZEq2hx/ev57XBDbUte9uqKYZOGWG4rYxaWA95SaSpwuER7q/oQRTDu bem7FtDZjB3M8kekcQeNXYjEt229Fl5+3KXiA2VQ+FIKqwkqIB/drdAEGeRqaXZ3wY lKMxsSBHD7egvCzloZSehPhbw6YE0fMN24kjr1TheMd2bgrXu5A4SMSf2u7+Y4zkWf VtoA8EX+gL3Zw== From: Yu Kuai To: Song Liu , Yu Kuai Cc: Li Nan , Xiao Ni , linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] md/raid5: split reshape bios before bitmap accounting Date: Fri, 5 Jun 2026 17:15:27 +0800 Message-ID: <20260605091527.2463539-21-yukuai@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260605091527.2463539-1-yukuai@kernel.org> References: <20260605091527.2463539-1-yukuai@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Yu Kuai Use the shared mddev_bio_split_at_reshape_offset() helper so RAID5 submits only one-side bios to llbitmap during reshape. Signed-off-by: Yu Kuai --- drivers/md/raid5.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 6786f30dc59b..dde10b5b0ff5 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6172,10 +6172,18 @@ static bool raid5_make_request(struct mddev *mddev,= struct bio * bi) make_discard_request(mddev, bi); md_write_end(mddev); return true; } =20 + bi =3D mddev_bio_split_at_reshape_offset(mddev, bi, NULL, + &conf->bio_split); + if (!bi) { + if (rw =3D=3D WRITE) + md_write_end(mddev); + return true; + } + logical_sector =3D bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTO= RS(conf)-1); bi->bi_next =3D NULL; =20 ctx =3D mempool_alloc(conf->ctx_pool, GFP_NOIO); memset(ctx, 0, conf->ctx_size); --=20 2.51.0