nvmet: add ns revalidation support
Add support for detecting capacity changes on nvmet blockdev and file
backed namespaces. This allows for emulating and testing online resizing
of nvme devices and filesystems on top.
Signed-off-by: Anthony Iliopoulos <ailiop@suse.com>
[chaitanya: Fix comments posted on V1]
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
[hch: reuse code a bit more]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c
index 9d6f75c..4c79aa8 100644
--- a/drivers/nvme/target/admin-cmd.c
+++ b/drivers/nvme/target/admin-cmd.c
@@ -486,6 +486,11 @@ static void nvmet_execute_identify_ns(struct nvmet_req *req)
if (!ns)
goto done;
+ if (ns->bdev)
+ nvmet_bdev_ns_revalidate(ns);
+ else
+ nvmet_file_ns_revalidate(ns);
+
/*
* nuse = ncap = nsze isn't always true, but we have no way to find
* that out from the underlying device.
