From patchwork Wed Jan 9 05:31:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huaisheng Ye X-Patchwork-Id: 10753423 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 D12436C2 for ; Wed, 9 Jan 2019 05:32:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BF30228DCE for ; Wed, 9 Jan 2019 05:32:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B2E8928DF3; Wed, 9 Jan 2019 05:32:48 +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 61F2A28DCE for ; Wed, 9 Jan 2019 05:32:48 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 57D28211B5079; Tue, 8 Jan 2019 21:32:48 -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 947FF211B506F for ; Tue, 8 Jan 2019 21:32:46 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1547011918; cv=none; d=zoho.com; s=zohoarc; b=Yutn97Lc2kuInlcxUBGNCYuI50Zanxpo2dh5A7MiMoDfsCToa/UNQGDiaiy8JlEbuhbrwBbeyvVmNQU7tgfm+UIOdez7h3BEVPS7rO/PCvz9X2C+hZ+4H+DPU5ajc3TF2HG5bxh43fd8WdeyuSFDL+wPL/FvHBcnayCcPhO5aLU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1547011918; h=Cc:Date:From:In-Reply-To:Message-ID:References:Subject:To:ARC-Authentication-Results; bh=LQScH7Z9ASTjwz+BDMoHBx4OT6Si3H3lqWmXMhgmtTk=; b=N6kBWgKrIcNY5+3jwICp+rfxfClpH0T3sJ64omwr9Ob1kjx+x/RjDuL9Z88imR/rw4yG0pugpOOdfxT1cAbypyoV+qKtpJ5R5B+pMFUoXoRrfX9MUWfKQ8SzUJsHEjOjFNK48sf+dl/Z44REUM59ieduWH2qTAnF4LkljZ+Rdno= 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=RrFUyYGiJw4aW79hat51p/nWRHJuirwkadiGOu3A2pxubRqY7TF1uAEfDpnIFkyVMueEAIvIcSzy ab/11lmt2LkWBDMLc9j7tBoqzswyvNahXV8EsOG2CNYTXiSlx4WO DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1547011918; 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=Nhv+ay56yWrVvTn+ZcbZ9JM2YzBxzlrC1iU5NdnNk91u3KdoNh/viZW1jVTuTMMx rn08rsklR70jHOb1bUxl2kKGmeWngSF/o2D7GXOTOLcD6+em9BEraJ/UWynLbwpXz3P uw5gbZFhA45eD4bWTrzJjiFX0oCyI3JStLbQPVNw= Received: from YEHS1XR956R00D1.lenovo.com (123.120.89.99 [123.120.89.99]) by mx.zohomail.com with SMTPS id 1547011915743450.1697423849781; Tue, 8 Jan 2019 21:31:55 -0800 (PST) From: Huaisheng Ye To: snitzer@redhat.com, agk@redhat.com Subject: [RFC PATCH v2 4/4] Documentation/device-mapper: add optional parameter reinit Date: Wed, 9 Jan 2019 13:31:27 +0800 Message-Id: <20190109053127.8128-5-yehs2007@zoho.com> X-Mailer: git-send-email 2.17.0.windows.1 In-Reply-To: <20190109053127.8128-1-yehs2007@zoho.com> References: <20190109053127.8128-1-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, chengnt@lenovo.com, 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