futex: Use pi_state_update_owner() in put_pi_state()
commit 6ccc84f917
upstream
No point in open coding it. This way it gains the extra sanity checks.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
parent
ceb83cf9ed
commit
a3155c362c
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@ -902,16 +902,10 @@ static void put_pi_state(struct futex_pi_state *pi_state)
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* and has cleaned up the pi_state already
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* and has cleaned up the pi_state already
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*/
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*/
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if (pi_state->owner) {
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if (pi_state->owner) {
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struct task_struct *owner;
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unsigned long flags;
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unsigned long flags;
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raw_spin_lock_irqsave(&pi_state->pi_mutex.wait_lock, flags);
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raw_spin_lock_irqsave(&pi_state->pi_mutex.wait_lock, flags);
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owner = pi_state->owner;
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pi_state_update_owner(pi_state, NULL);
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if (owner) {
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raw_spin_lock(&owner->pi_lock);
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list_del_init(&pi_state->list);
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raw_spin_unlock(&owner->pi_lock);
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}
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rt_mutex_proxy_unlock(&pi_state->pi_mutex);
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rt_mutex_proxy_unlock(&pi_state->pi_mutex);
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raw_spin_unlock_irqrestore(&pi_state->pi_mutex.wait_lock, flags);
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raw_spin_unlock_irqrestore(&pi_state->pi_mutex.wait_lock, flags);
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}
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}
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