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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 <hofrat@osadl.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
hifive-unleashed-5.1
Nicholas Mc Guire 2016-03-14 12:39:02 +01:00 committed by Pablo Neira Ayuso
parent 05752523e5
commit e39365be03
1 changed files with 2 additions and 4 deletions
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6
net/netfilter/nf_conntrack_core.c
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@ -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]);
}
}