From patchwork Wed Dec 25 11:15:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 13920755 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) (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 B9D911411C8 for ; Wed, 25 Dec 2024 11:19:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735125600; cv=none; b=e8F+km4TxVF7MeoDYBA2iFMkyaNZ+br4QkAWPM+KPDOM45P8KwaN06tXWuaXGR9ALqVSjxfN5x27LB2nilVfbH5orrbjfZaNf0yE9DIkmZbF6H8Fd96/TGDFjPm2MEDJkKbZVRMf7CX1NZ7aJmTDsaJF506WHf6mxZYwSNAstVM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735125600; c=relaxed/simple; bh=jSFSd5UrNoJv5po/2epDq94cpNoZhaWBAqrrnchheHw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=h2ojPXlcWpNTGC7ByTDO+59IPwIvZp4m+e7NjlTMYhXNKSFrU8HzhD/Apd/nNk/3oDLJgUdsHBkZVmBFwr2KzAcOIOWG2PUwQM62JSAK//rY4n/rsablMzNmI2jduXosAe4rntTVAMPJ/Ei5+3NuzvPT/CGaJb6zADCCJ/0IwVk= 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=45.249.212.51 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 [172.19.163.235]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4YJ8Rc6701z4f3jkk for ; Wed, 25 Dec 2024 19:19:40 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 7B7371A058E for ; Wed, 25 Dec 2024 19:19:55 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgAnT4NV6mtntXlgFg--.39006S12; Wed, 25 Dec 2024 19:19:55 +0800 (CST) From: Yu Kuai To: xni@redhat.com, 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 Subject: [PATCH md-6.14 08/13] md/raid1: check before deferencing mddev->bitmap_ops Date: Wed, 25 Dec 2024 19:15:41 +0800 Message-Id: <20241225111546.1833250-9-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20241225111546.1833250-1-yukuai1@huaweicloud.com> References: <20241225111546.1833250-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: dm-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: gCh0CgAnT4NV6mtntXlgFg--.39006S12 X-Coremail-Antispam: 1UD129KBjvJXoWxJr43ZF17Cw18KFWDuF45Jrb_yoW8Cw17pw srtFy3try5WrW3W345ZrykuF1Fy397JrZrtryfW3WxGrn7GryDZF4rXFWjqF1jka45AFy5 Jw4DJw45CFnxXF7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmS14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCY1x0262kKe7AKxVWUtVW8ZwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkE bVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67 AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI 42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF 4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8Jr0_Cr1UYxBI daVFxhVjvjDU0xZFpf9x0JUQFxUUUUUU= X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ From: Yu Kuai Prepare to support building bitmap as kernel module. 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 bb1cadfcf54b..8ca90af28b75 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2837,7 +2837,8 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr, else /* completed sync */ conf->fullsync = 0; - mddev->bitmap_ops->close_sync(mddev); + if (md_bitmap_enabled(mddev)) + mddev->bitmap_ops->close_sync(mddev); close_sync(conf); if (mddev_is_clustered(mddev)) { @@ -2874,10 +2875,11 @@ static sector_t raid1_sync_request(struct mddev *mddev, 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)) + mddev->bitmap_ops->cond_end_sync(mddev, sector_nr, + mddev_is_clustered(mddev) && + (sector_nr + 2 * RESYNC_SECTORS > + conf->cluster_sync_high)); if (raise_barrier(conf, sector_nr)) return 0; @@ -3358,15 +3360,17 @@ static int raid1_resize(struct mddev *mddev, sector_t sectors) * worth it. */ sector_t newsize = raid1_size(mddev, sectors, 0); - int ret; if (mddev->external_size && mddev->array_sectors > newsize) return -EINVAL; - ret = mddev->bitmap_ops->resize(mddev, newsize, 0); - if (ret) - return ret; + if (md_bitmap_enabled(mddev)) { + int ret = mddev->bitmap_ops->resize(mddev, newsize, 0); + + if (ret) + return ret; + } md_set_array_sectors(mddev, newsize); if (sectors > mddev->dev_sectors &&