From 38e6bc185d9544dfad1774b3f8902a0b061aea25 Mon Sep 17 00:00:00 2001 From: Amerigo Wang Date: Fri, 10 Aug 2012 01:24:38 +0000 Subject: netpoll: make __netpoll_cleanup non-block Like the previous patch, slave_disable_netpoll() and __netpoll_cleanup() may be called with read_lock() held too, so we should make them non-block, by moving the cleanup and kfree() to call_rcu_bh() callbacks. Cc: "David S. Miller" Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- include/linux/netpoll.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux/netpoll.h') diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h index bf2d51eec0f3..907812efb4d9 100644 --- a/include/linux/netpoll.h +++ b/include/linux/netpoll.h @@ -23,6 +23,7 @@ struct netpoll { u8 remote_mac[ETH_ALEN]; struct list_head rx; /* rx_np list element */ + struct rcu_head rcu; }; struct netpoll_info { @@ -38,6 +39,7 @@ struct netpoll_info { struct delayed_work tx_work; struct netpoll *netpoll; + struct rcu_head rcu; }; void netpoll_send_udp(struct netpoll *np, const char *msg, int len); @@ -48,6 +50,7 @@ int netpoll_setup(struct netpoll *np); int netpoll_trap(void); void netpoll_set_trap(int trap); void __netpoll_cleanup(struct netpoll *np); +void __netpoll_free_rcu(struct netpoll *np); void netpoll_cleanup(struct netpoll *np); int __netpoll_rx(struct sk_buff *skb); void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb, -- cgit v1.2.3-59-g8ed1b