From mboxrd@z Thu Jan 1 00:00:00 1970 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 1C3AB3009E5; Tue, 26 Aug 2025 09:00:43 +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=1756198846; cv=none; b=ltGlGQb+AI5yxVE7UMvxqVBShRhgJMR9Jd8Dul+E/6t6DUDHxFRAaZh5gyJ0e3r4eiEbdBeOJTgAc5Jf2eB61mQWQgop6ws7gU0ukxFg3rKH/cHWWP3chFKAvAAuURr8S+qth4uRBLTjIh0ktDfGFYQTCmqzR1Dd25Gj3oIzbFg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756198846; c=relaxed/simple; bh=zKkxTiTvjfz4SNEWg1YdxRreefbnu1jpQsfD/fKdC9s=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=HcFiHl/ewMozY9J2efwrhw3l8DwBT/mqzm6Qs7FUZgNwnUj73l4KIIfSN11/iIXVg75wdvr++ACX/dLFAtAhJWUvDKcnlsmbq3S6qYF55SVpAMsvIjJHATcKLdWXRo/GLBoChU+jCUlfjvPxuGw07RtjitCdHUhhFsUJGuXjrTI= 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 [172.19.163.216]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTPS id 4cB1pg52G8zYQvDL; Tue, 26 Aug 2025 17:00:43 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 3F6B71A1893; Tue, 26 Aug 2025 17:00:42 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgAncIyyd61oPOlgAQ--.7793S11; Tue, 26 Aug 2025 17:00:41 +0800 (CST) From: Yu Kuai To: hch@infradead.org, corbet@lwn.net, agk@redhat.com, snitzer@kernel.org, mpatocka@redhat.com, song@kernel.org, xni@redhat.com, hare@suse.de, linan122@huawei.com, colyli@kernel.org Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com, johnny.chenyi@huawei.com Subject: [PATCH v6 md-6.18 07/11] md/md-bitmap: add a new method skip_sync_blocks() in bitmap_operations Date: Tue, 26 Aug 2025 16:52:01 +0800 Message-Id: <20250826085205.1061353-8-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250826085205.1061353-1-yukuai1@huaweicloud.com> References: <20250826085205.1061353-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:gCh0CgAncIyyd61oPOlgAQ--.7793S11 X-Coremail-Antispam: 1UD129KBjvJXoW7AryxtF15Xr1DZw4kJw1kKrg_yoW8Cw43pa 97JFy3Cry5Xr45Z3W7XFyDuFyFv34ktFy7tFWxu34rWr97JrnxGF4Yga40qa4DCF13AFsx Z3W5ArWrZF1Iqw7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmS14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUGVWUXwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCY1x0262kKe7AKxVW8ZVWrXwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkE bVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67 AF67kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI 42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF 4lIxAIcVC2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AKxVW8Jr0_Cr1UYxBI daVFxhVjvjDU0xZFpf9x0pRiF4iUUUUU= 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 6560bd89d0a2..7196e7f6b2a4 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -9460,6 +9460,12 @@ 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) { @@ -9475,6 +9481,7 @@ 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