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net: Use non-zero allocations in dst_alloc().

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Make dst_alloc() and it's users explicitly initialize the entire
entry.

The zero'ing done by kmem_cache_zalloc() was almost entirely
redundant.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2011-04-28 14:31:47 -07:00
parent 5c1e6aa300
commit cf91166223
5 changed files with 78 additions and 39 deletions
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8
net/ipv6/route.c
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@@ -230,7 +230,11 @@ static struct rt6_info ip6_blk_hole_entry_template = {
static inline struct rt6_info *ip6_dst_alloc(struct dst_ops *ops,
struct net_device *dev)
{
return (struct rt6_info *)dst_alloc(ops, dev, 0, 0, 0);
struct rt6_info *rt = dst_alloc(ops, dev, 0, 0, 0);
memset(&rt->rt6i_table, 0, sizeof(*rt) - sizeof(struct dst_entry));
return rt;
}
static void ip6_dst_destroy(struct dst_entry *dst)
@@ -887,6 +891,8 @@ struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_ori
rt = dst_alloc(&ip6_dst_blackhole_ops, ort->dst.dev, 1, 0, 0);
if (rt) {
memset(&rt->rt6i_table, 0, sizeof(*rt) - sizeof(struct dst_entry));
new = &rt->dst;
new->__use = 1;