[PATCH] nvme: drop scan_lock and always kick requeue list when removing namespaces

[Christoph Hellwig]

On Wed, Oct 20, 2021 at 06:33:48PM +0300, Sagi Grimberg wrote:
> Reviewed-by: Sagi Grimberg <sagi at grimberg.me>
>
> Christoph, Keith, Hannes, Chaitanya,
> Do you see any issues with this?

No.  I'll add it to nvme-5.16.

I'd love to kill the scan mutex entirely.  For that we'll probably
need a per-tagset freeze in the block layer, which seems like a 
pretty good idea to start with.