From e39365be031e37b229f745ea49db0b25e82436fa Mon Sep 17 00:00:00 2001 From: Nicholas Mc Guire Date: Mon, 14 Mar 2016 12:39:02 +0100 Subject: [PATCH] netfilter: nf_conntrack: consolidate lock/unlock into unlock_wait The spin_lock()/spin_unlock() is synchronizing on the nf_conntrack_locks_all_lock which is equivalent to spin_unlock_wait() but the later should be more efficient. Signed-off-by: Nicholas Mc Guire Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_conntrack_core.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index f60b4fdeeb8c..afde5f5e728a 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -74,8 +74,7 @@ void nf_conntrack_lock(spinlock_t *lock) __acquires(lock) spin_lock(lock); while (unlikely(nf_conntrack_locks_all)) { spin_unlock(lock); - spin_lock(&nf_conntrack_locks_all_lock); - spin_unlock(&nf_conntrack_locks_all_lock); + spin_unlock_wait(&nf_conntrack_locks_all_lock); spin_lock(lock); } } @@ -121,8 +120,7 @@ static void nf_conntrack_all_lock(void) nf_conntrack_locks_all = true; for (i = 0; i < CONNTRACK_LOCKS; i++) { - spin_lock(&nf_conntrack_locks[i]); - spin_unlock(&nf_conntrack_locks[i]); + spin_unlock_wait(&nf_conntrack_locks[i]); } } -- 2.20.1