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net/mlx4_en: Add __GFP_COLD gfp flags in alloc_pages
authorIdo Shamay <idos@mellanox.com>
Sun, 2 Nov 2014 14:26:16 +0000 (16:26 +0200)
committerDavid S. Miller <davem@davemloft.net>
Mon, 3 Nov 2014 17:28:13 +0000 (12:28 -0500)
Needed in order to get cache cold pages (L3 flushed) for HW scatter.

Otherwise memory may flush those entries when the packet comes from
PCI, causing back pressure resulting in BW decrease.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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