tree 0de01e70f6d96b76b1b38e66a0b4bef2231b9634
parent 4d199c6f1c847151ea393d5b9946a17cc57cdf6d
author Omar Sandoval <osandov@fb.com> 1484769321 -0800
committer Jens Axboe <axboe@fb.com> 1484772109 -0700

sbitmap: use smp_mb__after_atomic() in sbq_wake_up()

We always do an atomic clear_bit() right before we call sbq_wake_up(),
so we can use smp_mb__after_atomic(). While we're here, comment the
memory barriers in here a little more.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>