From: Henry C Chang <henry_c_chang@tcloudcomputing.com>
Date: Thu, 16 Dec 2010 04:45:41 +0000 (-0800)
Subject: ceph: mark user pages dirty on direct-io reads
X-Git-Tag: v2.6.37-rc7~3^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b6aa5901c7a2bd90d0b6b9866300d2648b2568f3;p=pandora-kernel.git

ceph: mark user pages dirty on direct-io reads

For read operation, we have to set the argument _write_ of get_user_pages
to 1 since we will write data to pages. Also, we need to SetPageDirty before
releasing these pages.

Signed-off-by: Henry C Chang <henry_c_chang@tcloudcomputing.com>
Signed-off-by: Sage Weil <sage@newdream.net>
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