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[RTNETLINK]: Remove unnecessary locking in dump callbacks

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Since we're now holding the rtnl during the entire dump operation, we can
remove additional locking for rtnl protected data. This patch does that
for all simple cases (dev_base_lock for dev_base walking, RCU protection
for FIB rule dumping).

Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Patrick McHardy 2007-04-16 17:00:53 -07:00 • committed by David S. Miller
commit 6313c1e099
6 changed files with 3 additions and 22 deletions
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3
net/decnet/dn_dev.c
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@ -799,7 +799,6 @@ static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
skip_ndevs = cb->args[0];
skip_naddr = cb->args[1];
read_lock(&dev_base_lock);
for (dev = dev_base, idx = 0; dev; dev = dev->next, idx++) {
if (idx < skip_ndevs)
continue;
@ -824,8 +823,6 @@ static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
}
}
done:
read_unlock(&dev_base_lock);
cb->args[0] = idx;
cb->args[1] = dn_idx;