> On 23 Aug 2017, at 19.58, Christoph Hellwig <hch@xxxxxx> 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> > --- > drivers/nvme/host/core.c | 218 +++++++++++++++++++++++++++++++++++-------- > drivers/nvme/host/lightnvm.c | 14 +-- Nothing big here. Looks good. Reviewed-by: Javier González <javier@xxxxxxxxxxxx>
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