Merge tag 'v2.6.37' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / net / ipv4 / af_inet.c

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 6a1100c25a9f881f204934b1687b422384527f9a..f581f77d1097ca140c74e93072113d88ae0cc9bc 100644 (file)
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -227,18 +227,16 @@ EXPORT_SYMBOL(inet_ehash_secret);
 
 /*
  * inet_ehash_secret must be set exactly once
- * Instead of using a dedicated spinlock, we (ab)use inetsw_lock
  */
 void build_ehash_secret(void)
 {
        u32 rnd;
+
        do {
                get_random_bytes(&rnd, sizeof(rnd));
        } while (rnd == 0);
-       spin_lock_bh(&inetsw_lock);
-       if (!inet_ehash_secret)
-               inet_ehash_secret = rnd;
-       spin_unlock_bh(&inetsw_lock);
+
+       cmpxchg(&inet_ehash_secret, 0, rnd);
 }
 EXPORT_SYMBOL(build_ehash_secret);