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futex: Fix barrier comment
authorDavidlohr Bueso <dave@stgolabs.net>
Wed, 6 Feb 2019 18:56:02 +0000 (10:56 -0800)
committerThomas Gleixner <tglx@linutronix.de>
Fri, 8 Feb 2019 12:00:35 +0000 (13:00 +0100)
commit6f568ebe2afefdc33a6fb06ef20a94f8b96455f1
treef759c5a15e81839f297993fbf55c3735b61b51datree
parent74e96711e3379fc66630f2a1d184947f80cf2c48commit | diff
futex: Fix barrier comment

The current comment for the barrier that guarantees that waiter increment
is always before taking the hb spinlock (barrier (A)) needs to be fixed as
it is misplaced.

This is obviously referring to hb_waiters_inc, which is a full barrier.

Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190206185602.949-1-dave@stgolabs.net
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