diff options
| author | Anton Blanchard <anton@samba.org> | 2010-09-06 18:21:41 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-06 18:21:41 -0700 |
| commit | f89e49e79f839dbe79364ec6cd7e2274ad11b120 (patch) | |
| tree | 45d75386c47d38f940770326ade59bc57a27c93c | |
| parent | 8d86c61ae41d9068fd5e5cc01a4abd53c4fe3ab5 (diff) | |
| download | blackbird-op-linux-f89e49e79f839dbe79364ec6cd7e2274ad11b120.tar.gz blackbird-op-linux-f89e49e79f839dbe79364ec6cd7e2274ad11b120.zip | |
ibmveth: Use lighter weight read memory barrier in ibmveth_poll
We want to order the read in ibmveth_rxq_pending_buffer and the read of
ibmveth_rxq_buffer_valid which are both cacheable memory. smp_rmb() is good
enough for this.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Santiago Leon <santil@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ibmveth.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c index c236c8af3367..aedcb1802182 100644 --- a/drivers/net/ibmveth.c +++ b/drivers/net/ibmveth.c @@ -1010,7 +1010,7 @@ static int ibmveth_poll(struct napi_struct *napi, int budget) if (!ibmveth_rxq_pending_buffer(adapter)) break; - rmb(); + smp_rmb(); if (!ibmveth_rxq_buffer_valid(adapter)) { wmb(); /* suggested by larson1 */ adapter->rx_invalid_buffer++; |
