From patchwork Thu Jan 31 02:29:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huaisheng Ye X-Patchwork-Id: 10789557 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8329B159A for ; Thu, 31 Jan 2019 02:32:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7FAF830889 for ; Thu, 31 Jan 2019 02:32:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7288230890; Thu, 31 Jan 2019 02:32:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 262BC30889 for ; Thu, 31 Jan 2019 02:32:31 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 1E2E3211C2832; Wed, 30 Jan 2019 18:32:31 -0800 (PST) X-Original-To: linux-nvdimm@lists.01.org Delivered-To: linux-nvdimm@lists.01.org Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=135.84.80.237; helo=sender-pp-092.zoho.com; envelope-from=yehs2007@zoho.com; receiver=linux-nvdimm@lists.01.org Received: from sender-pp-092.zoho.com (sender-pp-092.zoho.com [135.84.80.237]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id CF3F5211B5A4C for ; Wed, 30 Jan 2019 18:32:29 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1548901888; cv=none; d=zoho.com; s=zohoarc; b=YtnG9vz/O8yeb2MNeONfLbdtluy7M9hj3MuFGwV3MvOPMlItJ81dFVQM1zTsdAJxDgfx3ritJPlZsvYZzaL2qXeVsIE4QkHRnmX8UdAkISsLPrkJDZ+DLInB3T8dSrZpCw0bBu6GrkHneMBW6iccH6wVQBmEVBmW7GERT/3m+BQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1548901888; h=Cc:Date:From:In-Reply-To:Message-ID:References:Subject:To:ARC-Authentication-Results; bh=LQScH7Z9ASTjwz+BDMoHBx4OT6Si3H3lqWmXMhgmtTk=; b=Vkvg4xglJaYStlJZKUZSKcJIUfwVf9Td9bX1E/vg/2j244afehfT7KOEUUwehNSCugH16IlXBB9hsshxs2sJ+AmjWDD0Ih6EkPhKylBubaZeBnm4aQ1huD79w2Dn8PHqxnvNnf7kG+EKOhYnsuPSE1ISuS6qeq13LF3w3wpXhQU= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=pass header.i=zoho.com; spf=pass smtp.mailfrom=yehs2007@zoho.com; dmarc=pass header.from= header.from= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=zapps768; d=zoho.com; h=from:to:cc:subject:date:message-id:in-reply-to:references; b=YTmQfU2DMhroOwFiwJYWEqVCs4EDKZKSuzi5bqP+fbrs5jLJLchtR/ZRLBKnYQeLCn9wuzZrzUEU oPM1+xfIPz224xdB/KchiATUum6Rsmk5Q3QvGuNPI0b8wVT5b+WF DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1548901888; s=default; d=zoho.com; i=yehs2007@zoho.com; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; l=927; bh=LQScH7Z9ASTjwz+BDMoHBx4OT6Si3H3lqWmXMhgmtTk=; b=QU8yZwJ1bXOM/lnRu9a7Xi9FWCs1kWMxs99q6tZq0Fubgz0Xi4G9kEnx9EhnCjrm DIGBuBvofT5Ad7M2jStIOe7kMsoI/Xh5M4brJxJaXqflRMqakDFEqkvm5px2psb8f99 zwzU+64LOiHq4TLmE9870GY6arm2E110HR8nTwXQ= Received: from YEHS1XR956R00D1.lenovo.com (106.38.1.115 [106.38.1.115]) by mx.zohomail.com with SMTPS id 1548901885991120.6711966437723; Wed, 30 Jan 2019 18:31:25 -0800 (PST) From: Huaisheng Ye To: mpatocka@redhat.com, snitzer@redhat.com, agk@redhat.com Subject: [PATCH v3 4/5] Documentation/device-mapper: add optional parameter reinit Date: Thu, 31 Jan 2019 10:29:54 +0800 Message-Id: <20190131022955.9920-5-yehs2007@zoho.com> X-Mailer: git-send-email 2.17.0.windows.1 In-Reply-To: <20190131022955.9920-1-yehs2007@zoho.com> References: <20190131022955.9920-1-yehs2007@zoho.com> X-ZohoMailClient: External X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Linux-nvdimm developer list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jack@suse.cz, corbet@lwn.net, linux-nvdimm@lists.01.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@redhat.com, hch@lst.de MIME-Version: 1.0 Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" X-Virus-Scanned: ClamAV using ClamSMTP From: Huaisheng Ye Add intro and usage guide for reinit. Signed-off-by: Huaisheng Ye --- Documentation/device-mapper/writecache.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/device-mapper/writecache.txt b/Documentation/device-mapper/writecache.txt index 01532b3..255c68c 100644 --- a/Documentation/device-mapper/writecache.txt +++ b/Documentation/device-mapper/writecache.txt @@ -45,6 +45,10 @@ Constructor parameters: afterwards - some underlying devices perform better with fua, some with nofua. The user should test it + reinit (by default off) + applicable only to persistent memory - use the REINIT flag + when the surper block has messy data, that would cause fn ctr + failed to work with invalid magic or version in the superblock Status: 1. error indicator - 0 if there was no error, otherwise error number