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gre: Simplify gre protocol registration locking.
authorPravin B Shelar <pshelar@nicira.com>
Tue, 18 Jun 2013 00:49:32 +0000 (17:49 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 20 Jun 2013 01:07:40 +0000 (18:07 -0700)
Use cmpxchg() for atomic protocol registration which saves
code and data space.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

No differences found
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