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mptcp: add sk_stop_timer_sync helper

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[ Upstream commit 08b81d873126b413cda511b1ea1cbb0e99938bbd ]

This patch added a new helper sk_stop_timer_sync, it deactivates a timer
like sk_stop_timer, but waits for the handler to finish.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 584f3742890e ("net: add sock_init_data_uid()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Geliang Tang 2020-09-24 08:30:01 +08:00 • committed by Greg Kroah-Hartman
commit 276ccbc15f
2 changed files with 9 additions and 0 deletions
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2
include/net/sock.h
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@ -2185,6 +2185,8 @@ void sk_reset_timer(struct sock *sk, struct timer_list *timer,
void sk_stop_timer(struct sock *sk, struct timer_list *timer);
void sk_stop_timer_sync(struct sock *sk, struct timer_list *timer);
int __sk_queue_drop_skb(struct sock *sk, struct sk_buff_head *sk_queue,
struct sk_buff *skb, unsigned int flags,
void (*destructor)(struct sock *sk,

7
net/core/sock.c
View file

@ -2882,6 +2882,13 @@ void sk_stop_timer(struct sock *sk, struct timer_list* timer)
}
EXPORT_SYMBOL(sk_stop_timer);
void sk_stop_timer_sync(struct sock *sk, struct timer_list *timer)
{
if (del_timer_sync(timer))
__sock_put(sk);
}
EXPORT_SYMBOL(sk_stop_timer_sync);
void sock_init_data(struct socket *sock, struct sock *sk)
{
sk_init_common(sk);