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 92AA52D3202; Tue, 22 Jul 2025 08:29:57 +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=1753173000; cv=none; b=UclxTxr1kldC9Wcu8W6dTVFPXvNwQ9lco1UAE/RSnFxFFVD7/A/lKX/mfPdhQeGeGuwBXrMZKdz+7CfSN2dZAcrZtVX0YVBPFhm/1LpQhsKSPZZ4nN3NHtjng57H1nrLG0l3OGHeDMMNwIkZrBcnLcD4r8pL7TXvs+bPm2RV50w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753173000; c=relaxed/simple; bh=dijSbF5TgUCZOZmfbIuovzO+IaPCj3LNBI05XaAR3jA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=IiazdyvJ08xxmPfkE4ZMypsM8wy3mg6xD0bkz4n9CFB8f5UDWMc9o+ZlvRvlRumZGWehc+725Q/QDdH18F/SZg6XFAiJKGalGtqFK866eKw4t/ZbTuYPYXwHS1EwW5jlr7ambvfLamthb2gm4V43MaqArfKgLxzsj4bAzublyE4= 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 ESMTPS id 4bmVnJ0c7XzYQvKb; Tue, 22 Jul 2025 16:29:56 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id C6BB41A092F; Tue, 22 Jul 2025 16:29:54 +0800 (CST) Received: from [10.174.179.247] (unknown [10.174.179.247]) by APP4 (Coremail) with SMTP id gCh0CgDXUxQATH9oJeFhBA--.54737S3; Tue, 22 Jul 2025 16:29:54 +0800 (CST) Message-ID: <2c943ca4-7bd2-4c2e-8b7a-8f7edee4adff@huaweicloud.com> Date: Tue, 22 Jul 2025 16:29:52 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [PATCH v4 00/11] md/llbitmap: md/md-llbitmap: introduce a new lockless bitmap To: Yu Kuai , corbet@lwn.net, agk@redhat.co, snitzer@kernel.org, mpatocka@redhat.com, hch@lst.de, song@kernel.org, hare@suse.de Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, yukuai3@huawei.com, yangerkun@huawei.com, yi.zhang@huawei.com, johnny.chenyi@huawei.com References: <20250721171557.34587-1-yukuai@kernel.org> From: Li Nan In-Reply-To: <20250721171557.34587-1-yukuai@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CM-TRANSID:gCh0CgDXUxQATH9oJeFhBA--.54737S3 X-Coremail-Antispam: 1UD129KBjvJXoW7KF48CF1ktF1xGryxCF15Arb_yoW8Xr48pa 4kK34ru343Ar17XF13ZryUAFyrJan7JrZrKr1xCw1F9a4DZF98Gr18K3WDtwn3Wr13JF1q qr15K3s3Wr1rXaUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUBSb4IE77IF4wAFF20E14v26ryj6rWUM7CY07I20VC2zVCF04k2 6cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4 vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7Cj xVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x 0267AKxVW0oVCq3wAac4AC62xK8xCEY4vEwIxC4wAS0I0E0xvYzxvE52x082IY62kv0487 Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aV AFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcVAKI48JM4IIrI8v6xkF7I0E 8cxan2IY04v7Mxk0xIA0c2IEe2xFo4CEbIxvr21lc7CjxVAaw2AFwI0_Jw0_GFyl42xK82 IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC2 0s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r4a6rW5MIIYrxkI7VAKI48JMI IF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F4UMIIF 0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87 Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjxUwb18UUUUU X-CM-SenderInfo: polqt0awwwqx5xdzvxpfor3voofrz/ 在 2025/7/22 1:15, Yu Kuai 写道: > From: Yu Kuai > > Changes from v3: > - fix redundant setting mddev->bitmap_id in patch 6; > - add explanation of bitmap attributes in Documentation; > - add llbitmap/barrier_idle in patch 11; > - add some comments in patch 11; [...] Patches 01–10 look good: Reviewed-by: Li Nan > > Yu Kuai (11): > md: add a new parameter 'offset' to md_super_write() > md: factor out a helper raid_is_456() > md/md-bitmap: support discard for bitmap ops > md: add a new mddev field 'bitmap_id' > md/md-bitmap: add a new sysfs api bitmap_type > md/md-bitmap: delay registration of bitmap_ops until creating bitmap > md/md-bitmap: add a new method skip_sync_blocks() in bitmap_operations > md/md-bitmap: add a new method blocks_synced() in bitmap_operations > md: add a new recovery_flag MD_RECOVERY_LAZY_RECOVER > md/md-bitmap: make method bitmap_ops->daemon_work optional > md/md-llbitmap: introduce new lockless bitmap > > Documentation/admin-guide/md.rst | 86 +- > drivers/md/Kconfig | 11 + > drivers/md/Makefile | 1 + > drivers/md/md-bitmap.c | 15 +- > drivers/md/md-bitmap.h | 45 +- > drivers/md/md-llbitmap.c | 1598 ++++++++++++++++++++++++++++++ > drivers/md/md.c | 288 ++++-- > drivers/md/md.h | 20 +- > drivers/md/raid5.c | 6 + > 9 files changed, 1963 insertions(+), 107 deletions(-) > create mode 100644 drivers/md/md-llbitmap.c > -- Thanks, Nan