Eric Dumazet
0ed8ddf404
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 >
2010-10-11 12:54:04 -07:00
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