On Mon, Sep 25, 2017 at 03:40:29PM +0200, Christoph Hellwig wrote: > Introduce a new struct nvme_ns_head [1] that holds information about > an actual namespace, unlike struct nvme_ns, which only holds the > per-controller namespace information. For private namespaces there > is a 1:1 relation of the two, but for shared namespaces this lets us > discover all the paths to it. For now only the identifiers are moved > to the new structure, but most of the information in struct nvme_ns > should eventually move over. > > To allow lockless path lookup the list of nvme_ns structures per > nvme_ns_head is protected by SRCU, which requires freeing the nvme_ns > structure through call_srcu. > > [1] comments welcome if you have a better name for it, the current one is > horrible. One idea would be to rename the current struct nvme_ns > to struct nvme_ns_link or similar and use the nvme_ns name for the > new structure. But that would involve a lot of churn. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> Looks good; I can live with 'nvme_ns_head'. Reviewed-by: Keith Busch <keith.busch@xxxxxxxxx>
