Thomas Gleixner f9b0c6c556 futex: Add mutex around futex exit
commit 3f186d974826847a07bc7964d79ec4eded475ad9 upstream

The mutex will be used in subsequent changes to replace the busy looping of
a waiter when the futex owner is currently executing the exit cleanup to
prevent a potential live lock.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20191106224556.845798895@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-30 13:32:12 +01:00
..
2021-01-30 13:32:12 +01:00
2019-05-25 18:23:30 +02:00