From: John David Anglin <dave.anglin@bell.net>
Date: Sun, 3 Feb 2013 23:02:49 +0000 (+0000)
Subject: parisc: fixes and cleanups in page cache flushing (4/4)
X-Git-Tag: v3.9-rc1~102^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cca8e9026041544c0103b3037d8f03c1d2f4ae02;p=pandora-kernel.git

parisc: fixes and cleanups in page cache flushing (4/4)

CONFIG_PARISC_TMPALIAS enables clear_user_highpage and copy_user_highpage.
These are essentially alternative implementations of clear_user_page and
copy_user_page.  They don't have anything to do with x86 high pages, but they
build on the infrastructure to save a few instructions.  Read the comment in
clear_user_highpage as it is very important to the implementation.  For this
reason, there isn't any gain in using the TMPALIAS/highpage approach.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
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