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authorMike Snitzer <snitzer@redhat.com>2017-12-04 21:07:37 -0500
committerMike Snitzer <snitzer@redhat.com>2017-12-20 10:51:10 -0500
commit22c11858e8002592c59ebb762e4e42dc634bf84f (patch)
tree63b1f14112ef5fe3dcab55747e3754370da07fec /include/linux/device-mapper.h
parentf3986374f94951b0fec6980e5b2dd621c51b215c (diff)
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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>
Diffstat (limited to 'include/linux/device-mapper.h')
-rw-r--r--include/linux/device-mapper.h1
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;