Instead validate that these identifiers do not change, as that is
prohibited by the specification.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/nvme/host/core.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 157dbb7b328d..179ade01745b 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1236,6 +1236,8 @@ static int nvme_revalidate_disk(struct gendisk *disk)
struct nvme_ns *ns = disk->private_data;
struct nvme_ctrl *ctrl = ns->ctrl;
struct nvme_id_ns *id;
+ u8 eui64[8] = { 0 }, nguid[16] = { 0 };
+ uuid_t uuid = uuid_null;
int ret = 0;
if (test_bit(NVME_NS_DEAD, &ns->flags)) {
@@ -1252,7 +1254,15 @@ static int nvme_revalidate_disk(struct gendisk *disk)
goto out;
}
- nvme_report_ns_ids(ctrl, ns->ns_id, id, ns->eui, ns->nguid, &ns->uuid);
+ nvme_report_ns_ids(ctrl, ns->ns_id, id, eui64, nguid, &uuid);
+ if (!uuid_equal(&ns->uuid, &uuid) ||
+ memcmp(&ns->nguid, &nguid, sizeof(ns->nguid)) ||
+ memcmp(&ns->eui, &eui64, sizeof(ns->eui))) {
Shouldn't uuid,nguid,eui64 record the previous values prior to calling
nvme_report_ns_ids?
