Messages in this thread Patch in this message | | | From | Manfred Spraul <> | Subject | [PATCH 7/7] net/netfilter/nf_conntrack_core: Remove smp_mb() after spin_lock(). | Date | Thu, 1 Sep 2016 17:04:17 +0200 |
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As spin_unlock_wait() is defined as equivalent to spin_lock(); spin_unlock(), the smp_mb() after spin_lock() is not required.
Remove it.
Signed-off-by: Manfred Spraul <manfred@colorfullife.com> --- net/netfilter/nf_conntrack_core.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index c8a2d26..7a3b5e6 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -82,10 +82,7 @@ void nf_conntrack_lock(spinlock_t *lock) __acquires(lock) /* 1) Acquire the lock */ spin_lock(lock); - /* 2) Order storing the lock and reading nf_conntrack_locks_all */ - smp_mb(); - - /* 3) read nf_conntrack_locks_all, with ACQUIRE semantics */ + /* 2) read nf_conntrack_locks_all, with ACQUIRE semantics */ if (likely(smp_load_acquire(&nf_conntrack_locks_all) == false)) return; -- 2.7.4
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