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>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 0e518d2ee280..41ec228b02a6 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;