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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-10-07 06:44:07 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-10-11 15:54:04 -0400 |
| commit | 0ed8ddf4045fcfcac36bad753dc4046118c603ec (patch) | |
| tree | cf1d9eb14668c4d2257b3519ed7deec8c5cb396d /lib/locking-selftest-wlock-softirq.h | |
| 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>
Diffstat (limited to 'lib/locking-selftest-wlock-softirq.h')
0 files changed, 0 insertions, 0 deletions