From: Wengang Wang <wen.gang.wang@oracle.com>
Date: Sun, 24 Jul 2011 17:36:54 +0000 (-0700)
Subject: ocfs2: Fix ocfs2_page_mkwrite()
X-Git-Tag: v3.2-rc4~1^2~8^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5cffff9e29866a3de98c2c25135b3199491f93b0;p=pandora-kernel.git

ocfs2: Fix ocfs2_page_mkwrite()

This patch address two shortcomings in ocfs2_page_mkwrite():
1. Makes the function return better VM_FAULT_* errors.
2. It handles a error that is triggered when a page is dropped from the mapping
due to memory pressure. This patch locks the page to prevent that.

[Patch was cleaned up by Sunil Mushran.]

Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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