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 62FAE1DACA7; Mon, 21 Jul 2025 06:10:13 +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=1753078215; cv=none; b=gsS2MRJdvaAroV2mpC+jk9cQXngWCGwQVEsffO8efnL1rTx+rDI1YuEXz8O9VKn0Yof+zNSVzkxQYhemX6MoIKfdPBZtf9ZVL6aVPf5wG04G1j1IhMMRpQeQzmetvZItvXsGhpAqu2y6BJBUuPKEWkNel3Pb0gTiC1TmNZtYyvI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753078215; c=relaxed/simple; bh=YdNi4rqzaJ2/K/d0sYakKz852DuCCfPoMOsKnVDEw7U=; h=Subject:To:Cc:References:From:Message-ID:Date:MIME-Version: In-Reply-To:Content-Type; b=crSAgy0lkVnWsEjFNOG8WnFoOq2ZuGqvYFFGTcc3H+gsAyzGxzsXdKpO5OLXnbhXCJ0PtjXcIRXFYvygmZ7nCEBq8D+HMKiUoIPoqdkDiG3NdZMe8v9kRMKdt2xHPFZO7SF494oDXKgrmb9Vq+32Cah7XBuBUNND/M/2yv2erOs= 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 4blqkX55WnzKHMdM; Mon, 21 Jul 2025 14:10:12 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 62AB41A1135; Mon, 21 Jul 2025 14:10:11 +0800 (CST) Received: from [10.174.179.143] (unknown [10.174.179.143]) by APP4 (Coremail) with SMTP id gCh0CgBXIBHC2X1oUpToAw--.45771S3; Mon, 21 Jul 2025 14:10:11 +0800 (CST) Subject: Re: [PATCH v3 06/11] md/md-bitmap: delay registration of bitmap_ops until creating bitmap To: Hannes Reinecke , Yu Kuai , corbet@lwn.net, agk@redhat.com, snitzer@kernel.org, mpatocka@redhat.com, song@kernel.org Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, yi.zhang@huawei.com, yangerkun@huawei.com, johnny.chenyi@huawei.com, "yukuai (C)" References: <20250718092336.3346644-1-yukuai1@huaweicloud.com> <20250718092336.3346644-7-yukuai1@huaweicloud.com> From: Yu Kuai Message-ID: <59f357c2-c69a-69cb-9b79-9841f91ab533@huaweicloud.com> Date: Mon, 21 Jul 2025 14:10:10 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-CM-TRANSID:gCh0CgBXIBHC2X1oUpToAw--.45771S3 X-Coremail-Antispam: 1UD129KBjvdXoWruF4xZF4DGFy3Xw4rKr4rZrb_yoWfGFbE9w 4UWFZ7Za4xJFWrtr15JFn8ZF40kw4Iyayxtws5AF48Jw13Aa9YyFZYkr9Yk34fCw4UCr43 GryDAr4ftrnIgjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbfAFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUGVWUXwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcVAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2kI c2xKxwCYjI0SjxkI62AI1cAE67vIY487MxkF7I0En4kS14v26r1q6r43MxAIw28IcxkI7V AKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCj r7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6x IIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAI w20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x 0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7VU13ku3UUUUU== X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ Hi, 在 2025/07/21 14:01, Hannes Reinecke 写道: >> diff --git a/Documentation/admin-guide/md.rst >> b/Documentation/admin-guide/md.rst >> index 356d2a344f08..03a9f5025f99 100644 >> --- a/Documentation/admin-guide/md.rst >> +++ b/Documentation/admin-guide/md.rst >> @@ -388,6 +388,9 @@ All md devices contain: >>        bitmap >>            The default internal bitmap >> +If bitmap_type is not none, then additional bitmap attributes will be >> +created after md device KOBJ_CHANGE event. >> + >>   If bitmap_type is bitmap, then the md device will also contain: >>     bitmap/location > > Please state _which_ attributes are created with the KOBJ_CHANGE > event. Just a notice in case you missed that following statements are exactly the attributes for bitmap, or do I misunderstood somehow? Thanks, Kuai