From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 30 Jan 2008 12:33:57 +0000 (+0100)
Subject: x86: cpa: simplify locking
X-Git-Tag: v2.6.25-rc1~1143^2~101
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a3dc7804e9856668caef41efc54179e61ffccc0;p=pandora-kernel.git

x86: cpa: simplify locking

further simplify cpa locking: since the largepage-split is a
slowpath, use the pgd_lock for the whole operation, intead
of the mmap_sem.

This also makes it suitable for DEBUG_PAGEALLOC purposes again.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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