[PATCH-4.5-v3 2/5] NVMe: Fix namespace removal deadlock

[Johannes Thumshirn]

On Wed, Feb 17, 2016 at 11:36:52AM -0700, Keith Busch wrote:
> This patch makes nvme namespace removal lockless. It is up to the caller
> to ensure no active namespace scanning is occuring.
> 
> The lockless removal allows the driver to cleanup a namespace
> request_queue if the controller fails during removal. Previously this
> could deadlock trying to acquire the namespace mutex in order to handle
> such events.
> 
> Signed-off-by: Keith Busch <keith.busch at intel.com>

Reviewed-by: Johannes Thumshirn <jthumshirn at suse.de>

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Johannes Thumshirn                                          Storage
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