Re: [PATCH] nvme: Skip checking heads without namespaces

On Mon, Mar 19, 2018 at 10:53:50AM -0600, Keith Busch wrote:

If a task is holding a reference to a namespace on a removed controller, the head will not be released. If the same controller is added again later, its namespaces may not be successfully added. Instead, the user will see kernel message "Duplicate IDs for nsid <X>".

This patch fixes that by skipping heads that don't have namespaces when considering if a new namespace is safe to add.

Delayed reference strike once again, sigh.

Looks fine:

Reviewed-by: Christoph Hellwig hch@lst.de