From 738e6d30d392fb75933a5eb4b481811598038786 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 18 Mar 2015 17:40:51 -0700 Subject: [PATCH] inet: add a schedule point in inet_twsk_purge() On a large hash table, we can easily spend seconds to walk over all entries. Add a cond_resched() to yield cpu if necessary. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/inet_timewait_sock.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c index 86ebf020925b..f38e387448fb 100644 --- a/net/ipv4/inet_timewait_sock.c +++ b/net/ipv4/inet_timewait_sock.c @@ -487,6 +487,7 @@ void inet_twsk_purge(struct inet_hashinfo *hashinfo, for (slot = 0; slot <= hashinfo->ehash_mask; slot++) { struct inet_ehash_bucket *head = &hashinfo->ehash[slot]; restart_rcu: + cond_resched(); rcu_read_lock(); restart: sk_nulls_for_each_rcu(sk, node, &head->chain) { -- 2.20.1