From: Max Filippov <jcmvbkbc@gmail.com>
Date: Sat, 18 May 2013 19:34:30 +0000 (+0400)
Subject: xtensa: fix fast_store_prohibited _PAGE_WRITABLE_BIT test
X-Git-Tag: v3.11-rc1~25^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=51fc41a90603eaee7b6d03b6027be8f22fcf8ef9;p=pandora-kernel.git

xtensa: fix fast_store_prohibited _PAGE_WRITABLE_BIT test

Before _PAGE_WRITABLE_BIT test fast_store_prohibited must make sure that
PTE is present. Otherwise 'writable' bit is undefined and may be reused
in the 'file offset' or 'swap type' PTE fields.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
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