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[INET]: Consolidate the xxx_evictor

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The evictors collect some statistics for ipv4 and ipv6,
so make it return the number of evicted queues and account
them all at once in the caller.

The XXX_ADD_STATS_BH() macros are just for this case,
but maybe there are places in code, that can make use of
them as well.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov
2007-10-15 02:40:06 -07:00
committed by David S. Miller
parent 1e4b82873a
commit 8e7999c44e
7 changed files with 52 additions and 80 deletions
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30
net/ipv4/ip_fragment.c
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@@ -174,33 +174,11 @@ static void ipq_kill(struct ipq *ipq)
*/
static void ip_evictor(void)
{
struct ipq *qp;
struct list_head *tmp;
int work;
int evicted;
work = atomic_read(&ip4_frags.mem) - ip4_frags_ctl.low_thresh;
if (work <= 0)
return;
while (work > 0) {
read_lock(&ip4_frags.lock);
if (list_empty(&ip4_frags.lru_list)) {
read_unlock(&ip4_frags.lock);
return;
}
tmp = ip4_frags.lru_list.next;
qp = list_entry(tmp, struct ipq, q.lru_list);
atomic_inc(&qp->q.refcnt);
read_unlock(&ip4_frags.lock);
spin_lock(&qp->q.lock);
if (!(qp->q.last_in&COMPLETE))
ipq_kill(qp);
spin_unlock(&qp->q.lock);
ipq_put(qp, &work);
IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
}
evicted = inet_frag_evictor(&ip4_frags);
if (evicted)
IP_ADD_STATS_BH(IPSTATS_MIB_REASMFAILS, evicted);
}
/*