David Howells ee72b9fddb rxrpc: Use ACCESS_ONCE() when accessing circular buffer pointers
Use ACCESS_ONCE() when accessing the other-end pointer into a circular
buffer as it's possible the other-end pointer might change whilst we're
doing this, and if we access it twice, we might get some weird things
happening.

Signed-off-by: David Howells <dhowells@redhat.com>
2016-03-04 15:58:06 +00:00
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