Shaohua Li <shaohua.li@intel.com> writes:

quoted text
> cfq_group->ref is used with queue_lock hold, the only exception is
> cfq_set_request, which looks like a bug to me, so ref doesn't need
> to be an atomic and atomic operation is slower.
>
> Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
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