From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Fri, 26 Sep 2008 17:32:22 +0000 (+0200)
Subject: futex: use fast_gup()
X-Git-Tag: v2.6.29-rc1~572^2~4^3~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=734b05b10e51d4ba38c8fc3ee02e846aab09eedf;p=pandora-kernel.git

futex: use fast_gup()

Change the get_user_pages() call with fast_gup() which doesn't require holding
the mmap_sem thereby removing the mmap_sem from all fast paths.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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