From mboxrd@z Thu Jan 1 00:00:00 1970 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 D908220C47C; Fri, 1 Aug 2025 07:10:53 +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=1754032255; cv=none; b=UtkGPG2CwANwf3N8PM4C5qur+o7Eu2nTvbFcQ5l4cQUd0xCQHN6RMltDYvYTk5tZAMFmUTfdr0WSoXMCRoqlTaTH8ZD+8hovRoZv2BnBrC1KCNg2GasmSrCa8mvJqHRfPy/RaLLHq3OrG6sM2WymibQGt7T2afcx7k092+DUbXc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754032255; c=relaxed/simple; bh=qVfg7rTSjzpaykeN4MsU3/92f8+95Fkp2RPTdLBIBY0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ZcRaZ3ueqrkVWS7jTFBf4UDLEB3ZoNKlXQiNUtFZgC0N0papniM5+rcmTOKSnREwR3ycLKfjjczP4M6i61fyiwDJZVZ1RU0IHEzAhHwvZyvLkW+WLiVgGq+PJBFidCnh5gzNqFbPS/5C2vfel7hD+ZQqLRw/6wWZlc9pk0N+Q/8= 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 [172.19.163.216]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTPS id 4btcYS2sMkzKHMlp; Fri, 1 Aug 2025 15:10:52 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 54ABA1A1B79; Fri, 1 Aug 2025 15:10:51 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgDHjxByaIxoqAzACA--.18978S11; Fri, 01 Aug 2025 15:10:51 +0800 (CST) From: Yu Kuai To: hch@lst.de, corbet@lwn.net, song@kernel.org, yukuai3@huawei.com, agk@redhat.com, snitzer@kernel.org, mpatocka@redhat.com, linan122@huawei.com, xni@redhat.com, hare@suse.de Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, dm-devel@lists.linux.dev, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com, johnny.chenyi@huawei.com Subject: [PATCH v5 07/11] md/md-bitmap: add a new method skip_sync_blocks() in bitmap_operations Date: Fri, 1 Aug 2025 15:03:42 +0800 Message-Id: <20250801070346.4127558-8-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250801070346.4127558-1-yukuai1@huaweicloud.com> References: <20250801070346.4127558-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-raid@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:gCh0CgDHjxByaIxoqAzACA--.18978S11 X-Coremail-Antispam: 1UD129KBjvJXoW7AryxtF15Xr1DZw4kJw1kKrg_yoW8Cw43pa 97JFy3Gry5Xr45Z3W7XFyDuFyFv34ktry7tFW7u3yrWr97trnxGF4Yga4vqa4DCFy3AFsx Z3WYyrWrZF1Iq3DanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmS14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCY1x0262kKe7AKxVW8ZVWrXwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkE bVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67 AF67kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI 42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF 4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8Jr0_Cr1UYxBI daVFxhVjvjDU0xZFpf9x0pRQJ5wUUUUU= X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ From: Yu Kuai This method is used to check if blocks can be skipped before calling into pers->sync_request(), llbitmap will use this method to skip resync for unwritten/clean data blocks, and recovery/check/repair for unwritten data blocks; Signed-off-by: Yu Kuai Reviewed-by: Christoph Hellwig Reviewed-by: Xiao Ni Reviewed-by: Hannes Reinecke Reviewed-by: Li Nan --- drivers/md/md-bitmap.h | 1 + drivers/md/md.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h index 8616ced49077..95453696c68e 100644 --- a/drivers/md/md-bitmap.h +++ b/drivers/md/md-bitmap.h @@ -89,6 +89,7 @@ struct bitmap_operations { md_bitmap_fn *start_discard; md_bitmap_fn *end_discard; + sector_t (*skip_sync_blocks)(struct mddev *mddev, sector_t offset); bool (*start_sync)(struct mddev *mddev, sector_t offset, sector_t *blocks, bool degraded); void (*end_sync)(struct mddev *mddev, sector_t offset, sector_t *blocks); diff --git a/drivers/md/md.c b/drivers/md/md.c index 0b87e825b8b5..2dc8234d19f5 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -9395,6 +9395,12 @@ void md_do_sync(struct md_thread *thread) if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) break; + if (mddev->bitmap_ops && mddev->bitmap_ops->skip_sync_blocks) { + sectors = mddev->bitmap_ops->skip_sync_blocks(mddev, j); + if (sectors) + goto update; + } + sectors = mddev->pers->sync_request(mddev, j, max_sectors, &skipped); if (sectors == 0) { @@ -9410,6 +9416,7 @@ void md_do_sync(struct md_thread *thread) if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) break; +update: j += sectors; if (j > max_sectors) /* when skipping, extra large numbers can be returned. */ -- 2.39.2