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netprio_cgroup: shorten variable names in extend_netdev_table()

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The function is about to go through a rewrite.  In preparation,
shorten the variable names so that we don't repeat "priomap" so often.

This patch is cosmetic.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Tested-and-Acked-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Acked-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tejun Heo 2012-11-22 07:32:46 -08:00
parent 6d5759dd02
commit 52bca930c9
1 changed files with 11 additions and 12 deletions
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23
net/core/netprio_cgroup.c
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@ -71,26 +71,25 @@ static int extend_netdev_table(struct net_device *dev, u32 new_len)
{
size_t new_size = sizeof(struct netprio_map) +
((sizeof(u32) * new_len));
struct netprio_map *new_priomap = kzalloc(new_size, GFP_KERNEL);
struct netprio_map *old_priomap;
struct netprio_map *new = kzalloc(new_size, GFP_KERNEL);
struct netprio_map *old;
old_priomap = rtnl_dereference(dev->priomap);
old = rtnl_dereference(dev->priomap);
if (!new_priomap) {
if (!new) {
pr_warn("Unable to alloc new priomap!\n");
return -ENOMEM;
}
if (old_priomap)
memcpy(new_priomap->priomap, old_priomap->priomap,
old_priomap->priomap_len *
sizeof(old_priomap->priomap[0]));
if (old)
memcpy(new->priomap, old->priomap,
old->priomap_len * sizeof(old->priomap[0]));
new_priomap->priomap_len = new_len;
new->priomap_len = new_len;
rcu_assign_pointer(dev->priomap, new_priomap);
if (old_priomap)
kfree_rcu(old_priomap, rcu);
rcu_assign_pointer(dev->priomap, new);
if (old)
kfree_rcu(old, rcu);
return 0;
}