[PATCH] use smp_mb/wmb/rmb where possible

Replace a number of memory barriers with smp_ variants.  This means we won't
take the unnecessary hit on UP machines.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/profile.c b/kernel/profile.c
index a38fa70075f..a66be468c42 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -522,7 +522,7 @@ static int __init create_hash_tables(void)
         return 0;
 out_cleanup:
         prof_on = 0;
-        mb();
+        smp_mb();
         on_each_cpu(profile_nop, NULL, 0, 1);
         for_each_online_cpu(cpu) {
                 struct page *page;