Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
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  
From:   Huaisheng Ye <yehs2007@zoho.com>
To:     mpatocka@redhat.com, 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,
        Huaisheng Ye <yehs1@lenovo.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>
In-Reply-To: <20190131022955.9920-1-yehs2007@zoho.com>
References: <20190131022955.9920-1-yehs2007@zoho.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

From: Huaisheng Ye <yehs1@lenovo.com>

Add intro and usage guide for reinit.

Signed-off-by: Huaisheng Ye <yehs1@lenovo.com>
---
 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