On Mon, Mar 27, 2017 at 08:06:55PM +0800, Ming Lei wrote:

This patch adds comment on two races related with
timeout handler:

- requeue from queue busy vs. timeout
- rq free & reallocation vs. timeout

Both the races themselves and current solution aren't
explicit enough, so add comments on them.

Cc: Bart Van Assche <redacted>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
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Reviewed-by: Johannes Thumshirn <redacted>
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