Christoph, > Introduce a new struct nvme_ns_head 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. Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> -- Martin K. Petersen Oracle Linux Engineering
