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Commit 7dbfb4ef authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

tun: do not block BH again in tun_flow_cleanup() 



tun_flow_cleanup() being a timer callback, it is already
running in BH context.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 02db34d0

drivers/net/tun.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -454,7 +454,7 @@ static void tun_flow_cleanup(unsigned long data) 




	tun_debug(KERN_INFO, tun, "tun_flow_cleanup\n");

	tun_debug(KERN_INFO, tun, "tun_flow_cleanup\n");





	spin_lock_bh(&tun->lock);

	spin_lock(&tun->lock);

	for (i = 0; i < TUN_NUM_FLOW_ENTRIES; i++) {

	for (i = 0; i < TUN_NUM_FLOW_ENTRIES; i++) {

		struct tun_flow_entry *e;

		struct tun_flow_entry *e;

		struct hlist_node *n;

		struct hlist_node *n;
@@ -472,7 +472,7 @@ static void tun_flow_cleanup(unsigned long data) 




	if (count)

	if (count)

		mod_timer(&tun->flow_gc_timer, round_jiffies_up(next_timer));

		mod_timer(&tun->flow_gc_timer, round_jiffies_up(next_timer));

	spin_unlock_bh(&tun->lock);

	spin_unlock(&tun->lock);

}

}





static void tun_flow_update(struct tun_struct *tun, u32 rxhash,

static void tun_flow_update(struct tun_struct *tun, u32 rxhash,