Peter Zijlstra 4b39f99c22 futex: Remove {get,drop}_futex_key_refs() ...

Now that {get,drop}_futex_key_refs() have become a glorified NOP,
remove them entirely.

The only thing get_futex_key_refs() is still doing is an smp_mb(), and
now that we don't need to (ab)use existing atomic ops to obtain them,
we can place it explicitly where we need it.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>

2020-03-06 11:06:19 +01:00

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