| commit | 0ed8ddf4045fcfcac36bad753dc4046118c603ec | [log] [tgz] |
|---|---|---|
| author | Eric Dumazet <eric.dumazet@gmail.com> | Thu Oct 07 10:44:07 2010 +0000 |
| committer | David S. Miller <davem@davemloft.net> | Mon Oct 11 12:54:04 2010 -0700 |
| tree | cf1d9eb14668c4d2257b3519ed7deec8c5cb396d | |
| parent | d122179a3c0fdc71b88cb9e3605f372b1651a9ff [diff] |
neigh: Protect neigh->ha[] with a seqlock Add a seqlock in struct neighbour to protect neigh->ha[], and avoid dirtying neighbour in stress situation (many different flows / dsts) Dirtying takes place because of read_lock(&n->lock) and n->used writes. Switching to a seqlock, and writing n->used only on jiffies changes permits less dirtying. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>