From: Jeff Layton <jlayton@poochiereds.net>
Date: Fri, 23 May 2014 10:50:21 +0000 (-0400)
Subject: cifs: revalidate mapping prior to satisfying read_iter request with cache=loose
X-Git-Tag: omap-for-v3.16/fixes-rc4~51^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08bc03539d38508eff3fd470a82ea422ce279f6e;p=pandora-kernel.git

cifs: revalidate mapping prior to satisfying read_iter request with cache=loose

Before satisfying a read with cache=loose, we should always check
that the pagecache is valid before allowing a read to be satisfied
out of it.

Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Jeff Layton <jlayton@poochiereds.net>
Signed-off-by: Steve French <smfrench@gmail.com>
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