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net: dynamically allocate fqdir structures

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Following patch will add rcu grace period before fqdir
rhashtable destruction, so we need to dynamically allocate
fqdir structures to not force expensive synchronize_rcu() calls
in netns dismantle path.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2019-05-24 09:03:39 -07:00
committed by David S. Miller
parent a39aca678a
commit 4907abc605
11 changed files with 78 additions and 63 deletions
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4
net/ipv6/proc.c
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@@ -48,8 +48,8 @@ static int sockstat6_seq_show(struct seq_file *seq, void *v)
seq_printf(seq, "RAW6: inuse %d\n",
sock_prot_inuse_get(net, &rawv6_prot));
seq_printf(seq, "FRAG6: inuse %u memory %lu\n",
atomic_read(&net->ipv6.fqdir.rhashtable.nelems),
frag_mem_limit(&net->ipv6.fqdir));
atomic_read(&net->ipv6.fqdir->rhashtable.nelems),
frag_mem_limit(net->ipv6.fqdir));
return 0;
}