Re: [PATCH 2/2]block cfq: don't use atomic_t for cfq_group

[Jeff Moyer]

Shaohua Li <shaohua.li@xxxxxxxxx> writes:

> 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@xxxxxxxxx>
Reviewed-by: Jeff Moyer <jmoyer@xxxxxxxxxx>
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