Using __get_free_pages() has some drawbacks :

1) Not NUMA aware

2) 2^X page granularity :
On arches with big PAGE_SIZE, we waste some ram for each cpu.

(We currently use 1024 pointers, that is at most 8192 bytes, but
PAGE_SIZE can be 65536 for example : With say 64 possible cpus,
thats about 56*64 Kbytes that are wasted)

Using kmalloc_node() can help to solve these two points.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>

  net/core/flow.c |   15 +++++----------
  1 files changed, 5 insertions(+), 10 deletions(-)