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Subject[PATCH 4.9 11/43] futex: Use pi_state_update_owner() in put_pi_state()
Date
From: Thomas Gleixner <tglx@linutronix.de>

[ Upstream commit 6ccc84f917d33312eb2846bd7b567639f585ad6d ]

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: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/futex.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -879,10 +879,7 @@ static void put_pi_state(struct futex_pi
* and has cleaned up the pi_state already
*/
if (pi_state->owner) {
- raw_spin_lock_irq(&pi_state->owner->pi_lock);
- list_del_init(&pi_state->list);
- raw_spin_unlock_irq(&pi_state->owner->pi_lock);
-
+ pi_state_update_owner(pi_state, NULL);
rt_mutex_proxy_unlock(&pi_state->pi_mutex);
}


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