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mlx4: support __GFP_MEMALLOC for rx

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Commit 04aeb56a17 ("net/mlx4_en: allocate non 0-order pages for RX
ring with __GFP_NOMEMALLOC") added code that appears to be not needed at
that time, since mlx4 never used __GFP_MEMALLOC allocations anyway.

As using memory reserves is a must in some situations (swap over NFS or
iSCSI), this patch adds this flag.

Note that this driver does not reuse pages (yet) so we do not have to
add anything else.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2017-01-17 20:14:10 -08:00 committed by David S. Miller
parent 8a43c052c7
commit dceeab0e52
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/mellanox/mlx4/en_rx.c
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@ -706,7 +706,8 @@ static bool mlx4_en_refill_rx_buffers(struct mlx4_en_priv *priv,
do {
if (mlx4_en_prepare_rx_desc(priv, ring,
ring->prod & ring->size_mask,
GFP_ATOMIC | __GFP_COLD))
GFP_ATOMIC | __GFP_COLD |
__GFP_MEMALLOC))
break;
ring->prod++;
} while (--missing);