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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)
commitab5f7fa9136b6b2da9b2512fc846b3669d57122a
treef759c5a15e81839f297993fbf55c3735b61b51datree | snapshot
parent9dfa42a6ee17bc73fe76688e912712cfe1f797bacommit | 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
kernel/futex.c diff | blob | history
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