diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2006-12-07 03:11:33 -0500 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2006-12-07 03:11:33 -0500 |
commit | e16aa207ccb61c5111525c462eeeba1f3f5fd370 (patch) | |
tree | 8a0a344fe7a3a10567075c9d63438ff6d79a1ca6 /net/packet/af_packet.c | |
parent | 26db167702756d0022f8ea5f1f30cad3018cfe31 (diff) |
[NET]: Memory barrier cleanups
I believe all the below memory barriers only matter on SMP so
therefore the smp_* variant of the barrier should be used.
I'm wondering if the barrier in net/ipv4/inet_timewait_sock.c should be
dropped entirely. schedule_work's implementation currently implies a
memory barrier and I think sane semantics of schedule_work() should imply
a memory barrier, as needed so the caller shouldn't have to worry.
It's not quite obvious why the barrier in net/packet/af_packet.c is
needed; maybe it should be implied through flush_dcache_page?
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/packet/af_packet.c')
-rw-r--r-- | net/packet/af_packet.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 08e68b67bbf6..da73e8a8c18d 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c | |||
@@ -660,7 +660,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe | |||
660 | sll->sll_ifindex = dev->ifindex; | 660 | sll->sll_ifindex = dev->ifindex; |
661 | 661 | ||
662 | h->tp_status = status; | 662 | h->tp_status = status; |
663 | mb(); | 663 | smp_mb(); |
664 | 664 | ||
665 | { | 665 | { |
666 | struct page *p_start, *p_end; | 666 | struct page *p_start, *p_end; |