dm: introduce DM_TYPE_NVME_BIO_BASED
If dm_table_determine_type() establishes DM_TYPE_NVME_BIO_BASED then
all devices in the DM table do not support partial completions. Also,
the table has a single immutable target that doesn't require DM core to
split bios.
This will enable adding NVMe optimizations to bio-based DM.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 0e518d2..41ec228 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -28,6 +28,7 @@ enum dm_queue_mode {
DM_TYPE_REQUEST_BASED = 2,
DM_TYPE_MQ_REQUEST_BASED = 3,
DM_TYPE_DAX_BIO_BASED = 4,
+ DM_TYPE_NVME_BIO_BASED = 5,
};
typedef enum { STATUSTYPE_INFO, STATUSTYPE_TABLE } status_type_t;