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inet: frags: use kmem_cache for inet_frag_queue

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Use kmem_cache to allocate/free inet_frag_queue objects since they're
all the same size per inet_frags user and are alloced/freed in high volumes
thus making it a perfect case for kmem_cache.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov
2014-08-01 12:29:48 +02:00
committed by David S. Miller
parent 2e404f632f
commit d4ad4d22e7
6 changed files with 35 additions and 9 deletions
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13
net/ipv4/inet_fragment.c
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@@ -198,7 +198,7 @@ static void inet_frag_schedule_worker(struct inet_frags *f)
schedule_work(&f->frags_work);
}
void inet_frags_init(struct inet_frags *f)
int inet_frags_init(struct inet_frags *f)
{
int i;
@@ -213,6 +213,12 @@ void inet_frags_init(struct inet_frags *f)
seqlock_init(&f->rnd_seqlock);
f->last_rebuild_jiffies = 0;
f->frags_cachep = kmem_cache_create(f->frags_cache_name, f->qsize, 0, 0,
NULL);
if (!f->frags_cachep)
return -ENOMEM;
return 0;
}
EXPORT_SYMBOL(inet_frags_init);
@@ -225,6 +231,7 @@ EXPORT_SYMBOL(inet_frags_init_net);
void inet_frags_fini(struct inet_frags *f)
{
cancel_work_sync(&f->frags_work);
kmem_cache_destroy(f->frags_cachep);
}
EXPORT_SYMBOL(inet_frags_fini);
@@ -327,7 +334,7 @@ void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f)
if (f->destructor)
f->destructor(q);
kfree(q);
kmem_cache_free(f->frags_cachep, q);
}
EXPORT_SYMBOL(inet_frag_destroy);
@@ -377,7 +384,7 @@ static struct inet_frag_queue *inet_frag_alloc(struct netns_frags *nf,
return NULL;
}
q = kzalloc(f->qsize, GFP_ATOMIC);
q = kmem_cache_zalloc(f->frags_cachep, GFP_ATOMIC);
if (q == NULL)
return NULL;