[PATCH 1/4] rcu_assign_pointer: null check fix

[Stephen Hemminger]

Goofed on last change, should avoid barrier only on rcu_assign_pointer(p, NULL)

Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>
---
 include/linux/rcupdate.h |   13 +++++++------
 1 files changed, 7 insertions(+), 6 deletions(-)

--- a/include/linux/rcupdate.h  2008-02-12 14:46:49.000000000 -0800
+++ b/include/linux/rcupdate.h  2008-02-12 14:56:17.000000000 -0800
@@ -178,7 +178,7 @@ struct rcu_head {
 
 #define rcu_assign_pointer(p, v)                       \
        ({                                              \
-               if (!(__builtin_constant_p(v) && v))    \
+               if (!__builtin_constant_p(v) || v)      \
                        smp_wmb();                      \
                (p) = (v);                              \
        })

-- 
Stephen Hemminger <[EMAIL PROTECTED]>

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