NVMe: Meta data handling through submit io ioctl

This adds support for the extended metadata formats through the submit
IO ioctl, and simplifies the rest when using a separate metadata format.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 0adad4a5419b..8dbd05e70f09 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -117,8 +117,9 @@ struct nvme_ns {
 
         unsigned ns_id;
         int lba_shift;
-        int ms;
-        int pi_type;
+        u16 ms;
+        bool ext;
+        u8 pi_type;
         u64 mode_select_num_blocks;
         u32 mode_select_block_len;
 };