From nobody Tue Oct 7 21:37:25 2025 Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) (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 9CF182206AC; Mon, 7 Jul 2025 01:32:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751851973; cv=none; b=F3+KbvkuIbk+RUUib1HX+Q7ARzTxgSrwZ5+ZlFi1P9+1HnSkfbm4dWRcnS+o46mq2Y+DQaDmsmT23jURB6CLIFO+O32i+stDJKxmZd9fkg3cObMZ7IXweSp9R9/HwGzyGdi77tHdMf2DpXsSvgZr99BKTYiotZo6K/Y/CXpYsYQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751851973; c=relaxed/simple; bh=6/AqTqaVEz9w3QYQQN662MoIHqTyx2Xb7blxEX+PTpg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Yhu+gJ/VbB8/sJZnlrCU936WhQMhARCxd/hidC6PziT5bmyx9yxJ5tHfWbXNgsKEI0MPovscFZHB9r/uNb6Ip/oLjakVdZwjWGR5MiKGVkawoHpkbUDIrqUvG/cscedp6HoPleBwYSByVEs0SKlptfpwI3JPZjmfTG3PKGBJTuc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.93.142]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTPS id 4bb6Dr48F0zKHMkR; Mon, 7 Jul 2025 09:32:44 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.252]) by mail.maildlp.com (Postfix) with ESMTP id 0B5031A13FB; Mon, 7 Jul 2025 09:32:43 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP3 (Coremail) with SMTP id _Ch0CgDnSCazI2to_nSRAw--.35890S14; Mon, 07 Jul 2025 09:32:42 +0800 (CST) From: Yu Kuai To: agk@redhat.com, snitzer@kernel.org, mpatocka@redhat.com, song@kernel.org, yukuai3@huawei.com Cc: dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com, johnny.chenyi@huawei.com Subject: [PATCH v5 10/15] md/raid1: check before referencing mddev->bitmap_ops Date: Mon, 7 Jul 2025 09:27:06 +0800 Message-Id: <20250707012711.376844-11-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250707012711.376844-1-yukuai1@huaweicloud.com> References: <20250707012711.376844-1-yukuai1@huaweicloud.com> 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 X-CM-TRANSID: _Ch0CgDnSCazI2to_nSRAw--.35890S14 X-Coremail-Antispam: 1UD129KBjvJXoWxJr43WF4rCw18urWDZw1DJrb_yoW8Cw45pw srtFy3try5GrWag345Aa4kuF1Fy3yxtrZrtryfW3WxWrn7GryDZF4rWFWjqF1jya45ZFy5 JayDJr45CF13WF7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmS14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCY1x0262kKe7AKxVWUtVW8ZwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkE bVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67 AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVW8JVW5JwCI 42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF 4lIxAIcVC2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AKxVW8Jr0_Cr1UYxBI daVFxhVjvjDU0xZFpf9x0JUQFxUUUUUU= X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ Content-Type: text/plain; charset="utf-8" From: Yu Kuai Prepare to introduce CONFIG_MD_BITMAP. Signed-off-by: Yu Kuai --- drivers/md/raid1.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 015eabb502ec..ea6a134be9d5 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2819,7 +2819,8 @@ static sector_t raid1_sync_request(struct mddev *mdde= v, sector_t sector_nr, else /* completed sync */ conf->fullsync =3D 0; =20 - mddev->bitmap_ops->close_sync(mddev); + if (md_bitmap_enabled(mddev, false)) + mddev->bitmap_ops->close_sync(mddev); close_sync(conf); =20 if (mddev_is_clustered(mddev)) { @@ -2856,10 +2857,11 @@ static sector_t raid1_sync_request(struct mddev *md= dev, sector_t sector_nr, /* we are incrementing sector_nr below. To be safe, we check against * sector_nr + two times RESYNC_SECTORS */ - - mddev->bitmap_ops->cond_end_sync(mddev, sector_nr, - mddev_is_clustered(mddev) && - (sector_nr + 2 * RESYNC_SECTORS > conf->cluster_sync_high)); + if (md_bitmap_enabled(mddev, false)) + mddev->bitmap_ops->cond_end_sync(mddev, sector_nr, + mddev_is_clustered(mddev) && + (sector_nr + 2 * RESYNC_SECTORS > + conf->cluster_sync_high)); =20 if (raise_barrier(conf, sector_nr)) return 0; @@ -3334,15 +3336,17 @@ static int raid1_resize(struct mddev *mddev, sector= _t sectors) * worth it. */ sector_t newsize =3D raid1_size(mddev, sectors, 0); - int ret; =20 if (mddev->external_size && mddev->array_sectors > newsize) return -EINVAL; =20 - ret =3D mddev->bitmap_ops->resize(mddev, newsize, 0); - if (ret) - return ret; + if (md_bitmap_enabled(mddev, false)) { + int ret =3D mddev->bitmap_ops->resize(mddev, newsize, 0); + + if (ret) + return ret; + } =20 md_set_array_sectors(mddev, newsize); if (sectors > mddev->dev_sectors && --=20 2.39.2