From: Eric Dumazet <edumazet@google.com>
Date: Fri, 10 Apr 2015 13:07:18 +0000 (-0700)
Subject: tcp: do not cache align timewait sockets
X-Git-Tag: omap-for-v4.1/fixes-rc1~141^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=52db70dca5c206741f4f5c89410a2d32864f9840;p=pandora-kernel.git

tcp: do not cache align timewait sockets

With recent adoption of skc_cookie in struct sock_common,
struct tcp_timewait_sock size increased from 192 to 200 bytes
on 64bit arches. SLAB rounds then to 256 bytes.

It is time to drop SLAB_HWCACHE_ALIGN constraint for twsk_slab.

This saves about 12 MB of memory on typical configuration reaching
262144 timewait sockets, and has no noticeable impact on performance.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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