This avoids the situation where a dump of a large number of connections
may prevent scheduling for a long time while also avoiding excessive
calls to rcu_read_unlock() and rcu_read_lock().
Note that in the case of !CONFIG_PREEMPT_RCU this will
add a call to cond_resched().
Compile tested only.
Cc: Eric Dumazet <eric.duma...@gmail.com>
Cc: Julian Anastasov <j...@ssi.bg>
Cc: Ingo Molnar <mi...@kernel.org>
Signed-off-by: Simon Horman <ho...@verge.net.au>
---
net/netfilter/ipvs/ip_vs_conn.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index a083bda..42a7b33 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -975,8 +975,7 @@ static void *ip_vs_conn_array(struct seq_file *seq, loff_t
pos)
return cp;
}
}
- rcu_read_unlock();
- rcu_read_lock();
+ cond_resched_rcu_lock();
}
return NULL;
@@ -1015,8 +1014,7 @@ static void *ip_vs_conn_seq_next(struct seq_file *seq,
void *v, loff_t *pos)
iter->l = &ip_vs_conn_tab[idx];
return cp;
}
- rcu_read_unlock();
- rcu_read_lock();
+ cond_resched_rcu_lock();
}
iter->l = NULL;
return NULL;
--
1.8.2.1
--
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