diff options
Diffstat (limited to 'net/ipv4/route.c')
| -rw-r--r-- | net/ipv4/route.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index cedc366505bd..790de32cd7d4 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2829,14 +2829,20 @@ void ip_rt_multicast_event(struct in_device *in_dev) } #ifdef CONFIG_SYSCTL -static int flush_delay; - static int ipv4_sysctl_rtcache_flush(ctl_table *ctl, int write, struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos) { if (write) { + int flush_delay; + static DEFINE_MUTEX(flush_mutex); + + mutex_lock(&flush_mutex); + ctl->data = &flush_delay; proc_dointvec(ctl, write, filp, buffer, lenp, ppos); + ctl->data = NULL; + mutex_unlock(&flush_mutex); + rt_cache_flush(&init_net, flush_delay); return 0; } @@ -2865,7 +2871,6 @@ ctl_table ipv4_route_table[] = { { .ctl_name = NET_IPV4_ROUTE_FLUSH, .procname = "flush", - .data = &flush_delay, .maxlen = sizeof(int), .mode = 0200, .proc_handler = &ipv4_sysctl_rtcache_flush, |
