[PATCH] NVMe: Avoid interrupt disable during queue init.
keith.busch at intel.com
Thu May 21 12:34:20 PDT 2015
On Thu, 21 May 2015, Parav Pandit wrote:
> Avoid diabling interrupt and holding q_lock for the queue
> which is just getting initialized.
> With this change, online_queues is also incremented without
> lock during queue setup stage.
> if Power management nvme_suspend() kicks in during queue setup time,
> per nvmeq based q_lock spinlock cannot protect device wide
> online_queues variable anyway.
The q_lock is held to protect polling from reading inconsistent data.
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