The following commit has been merged into the locking/urgent branch of tip:

Commit-ID:     6ccc84f917d33312eb2846bd7b567639f585ad6d
Gitweb:        
https://git.kernel.org/tip/6ccc84f917d33312eb2846bd7b567639f585ad6d
Author:        Thomas Gleixner <[email protected]>
AuthorDate:    Wed, 20 Jan 2021 11:35:19 +01:00
Committer:     Thomas Gleixner <[email protected]>
CommitterDate: Tue, 26 Jan 2021 15:10:59 +01:00

futex: Use pi_state_update_owner() in put_pi_state()

No point in open coding it. This way it gains the extra sanity checks.

Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Cc: [email protected]
---
 kernel/futex.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/kernel/futex.c b/kernel/futex.c
index cfca221..a0fe63c 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -808,16 +808,10 @@ static void put_pi_state(struct futex_pi_state *pi_state)
         * and has cleaned up the pi_state already
         */
        if (pi_state->owner) {
-               struct task_struct *owner;
                unsigned long flags;
 
                raw_spin_lock_irqsave(&pi_state->pi_mutex.wait_lock, flags);
-               owner = pi_state->owner;
-               if (owner) {
-                       raw_spin_lock(&owner->pi_lock);
-                       list_del_init(&pi_state->list);
-                       raw_spin_unlock(&owner->pi_lock);
-               }
+               pi_state_update_owner(pi_state, NULL);
                rt_mutex_proxy_unlock(&pi_state->pi_mutex);
                raw_spin_unlock_irqrestore(&pi_state->pi_mutex.wait_lock, 
flags);
        }

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