[AF_UNIX]: Use spinlock for unix_table_lock
This lock is actually taken mostly as a writer,
so using a rwlock actually just makes performance
worse especially on chips like the Intel P4.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/unix/garbage.c b/net/unix/garbage.c
index 6ffc64e..411802b 100644
--- a/net/unix/garbage.c
+++ b/net/unix/garbage.c
@@ -182,7 +182,7 @@
if (down_trylock(&unix_gc_sem))
return;
- read_lock(&unix_table_lock);
+ spin_lock(&unix_table_lock);
forall_unix_sockets(i, s)
{
@@ -301,7 +301,7 @@
}
u->gc_tree = GC_ORPHAN;
}
- read_unlock(&unix_table_lock);
+ spin_unlock(&unix_table_lock);
/*
* Here we are. Hitlist is filled. Die.