From: Christoph Lameter <clameter@sgi.com>
Date: Wed, 19 Dec 2007 00:22:46 +0000 (-0800)
Subject: IA64: Slim down __clear_bit_unlock
X-Git-Tag: v2.6.24-rc6~11^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a3ebdb6c423dff420168a3faf25c76e9e5f59258;p=pandora-kernel.git

IA64: Slim down __clear_bit_unlock

__clear_bit_unlock does not need to perform atomic operations on the
variable.  Avoid a cmpxchg and simply do a store with release semantics.
Add a barrier to be safe that the compiler does not do funky things.

Tony: Use intrinsic rather than inline assembler

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---

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