[Devel] [PATCH vz7] drivers/net/ixgbe: Suppress warnings on page allocation failure.

[Oleg Babin]

The ixgbe driver can produce a lot of page allocation warnings to dmesg
during IRQ servicing. These warnings can slow down a whole system while
not being very usefull as the user can obtain the same information from
the driver's stats counter 'alloc_rx_buff_failed' using ethtool.

Suppress this warnings using __GFP_NOWARN flag.

https://jira.sw.ru/browse/PSBM-82315
Signed-off-by: Oleg Babin <obabin at virtuozzo.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 0afaf44..0b235d1 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -2031,8 +2031,9 @@ static struct sk_buff *ixgbe_fetch_rx_buffer(struct ixgbe_ring *rx_ring,
 #endif
 
 		/* allocate a skb to store the frags */
-		skb = napi_alloc_skb(&rx_ring->q_vector->napi,
-				     IXGBE_RX_HDR_SIZE);
+		skb = __napi_alloc_skb(&rx_ring->q_vector->napi,
+				       IXGBE_RX_HDR_SIZE,
+				       GFP_ATOMIC | __GFP_NOWARN);
 		if (unlikely(!skb)) {
 			rx_ring->rx_stats.alloc_rx_buff_failed++;
 			return NULL;
-- 
1.8.3.1