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| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2010-03-23 20:40:50 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-04-01 16:02:10 -0700 |
| commit | 089a124822a5c5a03480643c8265597d209ddee6 (patch) | |
| tree | 81a2909fd878d1e3508fff144462161a4760d8e2 /net/ipv4/tcp_input.c | |
| parent | a1c9d89a98cbbc52ead6c44bb0c31eaaa37c5770 (diff) | |
skbuff: remove unused dma_head & dma_maps fields
[ Upstream commit 03e6d819c2cb2cc8ce5642669a0a7c72336ee7a2 ]
The dma map fields in the skb_shared_info structure no longer has any users
and can be dropped since it is making the skb_shared_info unecessarily larger.
Running slabtop show that we were using 4K slabs for the skb->head on x86_64 w/
an allocation size of 1522. It turns out that the dma_head and dma_maps array
made skb_shared large enough that we had crossed over the 2k boundary with
standard frames and as such we were using 4k blocks of memory for all skbs.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net/ipv4/tcp_input.c')
0 files changed, 0 insertions, 0 deletions