From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on archive.lwn.net X-Spam-Level: X-Spam-Status: No, score=-6.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by archive.lwn.net (Postfix) with ESMTP id 8E08C7D04D for ; Wed, 9 Jan 2019 05:32:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729612AbfAIFcw (ORCPT ); Wed, 9 Jan 2019 00:32:52 -0500 Received: from sender-pp-092.zoho.com ([135.84.80.237]:25400 "EHLO sender-pp-092.zoho.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728469AbfAIFcv (ORCPT ); Wed, 9 Jan 2019 00:32:51 -0500 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 Cc: dan.j.williams@intel.com, hch@lst.de, jack@suse.cz, corbet@lwn.net, dm-devel@redhat.com, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-doc@vger.kernel.org, chengnt@lenovo.com, Huaisheng Ye 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 Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org 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 -- 1.8.3.1