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Date:	Wed, 29 Oct 2014 07:49:19 -0700
From:	Eric Dumazet <>
To:	Alexander Duyck <>
Cc:	netdev <>,
	Stephen Ko <>
Subject: [RFC] use smp_load_acquire()/smp_store_release()

Hi Alexander

The memory barriers added in commit
("net: Add memory barriers to prevent possible race in byte queue

have heavy cost.

It seems we could use smp_load_acquire() and smp_store_release()
instead ?

I'll post a patch later today. I would be interested if someone was able
to test it, as your commit apparently was tested and known to fix a
reproducible race.

Thanks !

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