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futex: fix restart for early wakeup in futex_wait_requeue_pi()

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The futex_wait_requeue_pi op should restart unconditionally like
futex_lock_pi. The user of that function e.g. pthread_cond_wait can
not be interrupted so we do not care about the SA_RESTART flag of the
signal. Clean up the FIXMEs.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2009-05-20 09:22:40 +02:00
parent c8b15a706d
commit 1c840c1490
1 changed files with 3 additions and 10 deletions
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13
kernel/futex.c
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@ -2060,7 +2060,7 @@ static int futex_unlock_pi(u32 __user *uaddr, int fshared)
*
* Returns
* 0 - no early wakeup detected
* <0 - -ETIMEDOUT or -ERESTARTSYS (FIXME: or ERESTARTNOINTR?)
* <0 - -ETIMEDOUT or -ERESTARTNOINTR
*/
static inline
int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
@ -2087,15 +2087,8 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
if (timeout && !timeout->task)
ret = -ETIMEDOUT;
else {
/*
* We expect signal_pending(current), but another
* thread may have handled it for us already.
*/
/* FIXME: ERESTARTSYS or ERESTARTNOINTR? Do we care if
* the user specified SA_RESTART or not? */
ret = -ERESTARTSYS;
}
else
ret = -ERESTARTNOINTR;
}
return ret;
}