tree b5f505b4bfbc770c1e15d7177fec4944e2df9c28
parent 47bbec0282cce900f16a8dd6397260e076400edb
author Eric Dumazet <dada1@cosmosbay.com> 1165565323 -0800
committer David S. Miller <davem@sunset.davemloft.net> 1165627169 -0800

[NET]: Force a cache line split in hh_cache in SMP.

hh_lock was converted from rwlock to seqlock by Stephen.

To have a 100% benefit of this change, I suggest to place read mostly fields
of hh_cache in a separate cache line, because hh_refcnt may be changed quite
frequently on some busy machines.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>