From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Mon, 23 May 2011 08:24:39 +0000 (+0200)
Subject: [S390] merge page_test_dirty and page_clear_dirty
X-Git-Tag: v3.0-rc1~313^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d42552d1c1659b014851cf449ad2fe458509128;p=pandora-kernel.git

[S390] merge page_test_dirty and page_clear_dirty

The page_clear_dirty primitive always sets the default storage key
which resets the access control bits and the fetch protection bit.
That will surprise a KVM guest that sets non-zero access control
bits or the fetch protection bit. Merge page_test_dirty and
page_clear_dirty back to a single function and only clear the
dirty bit from the storage key.

In addition move the function page_test_and_clear_dirty and
page_test_and_clear_young to page.h where they belong. This
requires to change the parameter from a struct page * to a page
frame number.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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