From nobody Mon Jun 8 06:36:53 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 2CAC2413619; Fri, 5 Jun 2026 09:16:07 +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=1780650969; cv=none; b=S0JyLFu2sktuo+ulU9X2YlNgvvzE7l1Hm0bJZv/lBqziB6XEshSZrH60bIJ5MjXfaxvx3OzjRqT3T3cJW9cxNlBP2GQcGZWBvDoCAg4Y42ChSjkFjb2ClV1QyXedsF5h+yIhbG3kzNyqjKP33jVOhMJ1xTTbyyPcYNkDqjMn9l8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780650969; c=relaxed/simple; bh=sugyi6mtfvuq1wbrdcRMBvb8slckQPPlqvq6edJm8Po=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=X0rjcoY+j8o56eVPuQJUHGzksMSzT2nRWT0Ep9HEDomXrO3CcqUmwynxLIWgJ69G5H9+XEF7ILTm9QvQ5Nwk5Mf53KBB85YHy2U59reOxE6A0cKl+mY/NHwAQFhoavsZeRXp8Fxn4VZfJhnWYDfMcrMLJWfKextobmfJzCwt4GE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LDKYZaIg; 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="LDKYZaIg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2CC051F00898; Fri, 5 Jun 2026 09:16:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780650967; bh=Y4oNsB7h4Pw/vHl+I625Tfm1dVhF4ypIsvBQOoGS+oQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=LDKYZaIgs1e4dtE35zDOJYpzRL3dMOeZDcEDwgr/xiDHX71+nMsVCoAjDppAS0/NN BySI2vRB/oPmo2PRUX+CLKwT47miAxhwejeB3wyX9Z+1Jwa8QUmwmtab8isLsWdRA+ gM1pqE5kDt1GNSdJhuaGEEHeJoYsBn60XEzOlX834lI9yGEizpIjzNP0/HQXIDsoSm zEOymmLzekKM+9s01XJf8LLyXljyrdzEsg9z0FYlKpvACBDYCRRFnoZYDqad1GoTZu zkNe29Nlr3b51inzrNcV9iOGq1B14uIB0MKDn8BeHFgDPcKYchUiY7d/B0ZHAJPS4Q EwQvRDxxgwECA== 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/raid10: split reshape bios before bitmap accounting Date: Fri, 5 Jun 2026 17:15:23 +0800 Message-ID: <20260605091527.2463539-17-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 RAID10 submits only one-side bios to llbitmap during reshape. Signed-off-by: Yu Kuai --- drivers/md/raid10.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 40000b867136..cd35d183877c 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1898,10 +1898,16 @@ static bool raid10_make_request(struct mddev *mddev= , struct bio *bio) || conf->prev.near_copies < conf->prev.raid_disks))) sectors =3D chunk_sects - (bio->bi_iter.bi_sector & (chunk_sects - 1)); + + bio =3D mddev_bio_split_at_reshape_offset(mddev, bio, §ors, + &conf->bio_split); + if (!bio) + return true; + __make_request(mddev, bio, sectors); =20 /* In case raid10d snuck in to freeze_array */ wake_up_barrier(conf); return true; @@ -4273,11 +4279,10 @@ static int raid10_check_reshape(struct mddev *mddev) return -EINVAL; if (mddev->bitmap_id =3D=3D ID_LLBITMAP && mddev->new_chunk_sectors && mddev->new_chunk_sectors < mddev->chunk_sectors) return -EOPNOTSUPP; - if (setup_geo(&geo, mddev, geo_start) !=3D conf->copies) /* mustn't change number of copies */ return -EINVAL; if (geo.far_copies > 1 && !geo.far_offset) /* Cannot switch to 'far' mode */ --=20 2.51.0