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futex: Remove unused variable 'vpid' in futex_proxy_trylock_atomic()

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The recent bug fix left the variable 'vpid' and an assignment to it around,
but the variable is otherwise unused.

clang dose not complain even with W=1, but gcc exposed this.

Fixes: 4f07ec0d76f2 ("futex: Prevent inconsistent state and exit race")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2021-09-03 22:47:06 +02:00
parent 340576590d
commit d66e3edee7
1 changed files with 1 additions and 2 deletions
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3
kernel/futex.c
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@ -2034,7 +2034,7 @@ futex_proxy_trylock_atomic(u32 __user *pifutex, struct futex_hash_bucket *hb1,
{ {
struct futex_q *top_waiter = NULL; struct futex_q *top_waiter = NULL;
u32 curval; u32 curval;
int ret, vpid; int ret;
if (get_futex_value_locked(&curval, pifutex)) if (get_futex_value_locked(&curval, pifutex))
return -EFAULT; return -EFAULT;
@ -2079,7 +2079,6 @@ futex_proxy_trylock_atomic(u32 __user *pifutex, struct futex_hash_bucket *hb1,
* the user space lock can be acquired then PI state is attached to * the user space lock can be acquired then PI state is attached to
* the new owner (@top_waiter->task) when @set_waiters is true. * the new owner (@top_waiter->task) when @set_waiters is true.
*/ */
vpid = task_pid_vnr(top_waiter->task);
ret = futex_lock_pi_atomic(pifutex, hb2, key2, ps, top_waiter->task, ret = futex_lock_pi_atomic(pifutex, hb2, key2, ps, top_waiter->task,
exiting, set_waiters); exiting, set_waiters);
if (ret == 1) { if (ret == 1) {