NVMe: Meta-data support in NVME_IOCTL_SUBMIT_IO

This adds support for namespaces with separate meta-data formats in the
submit io ioctl. The meta-data buffer has to be a contiguous, so such
a buffer is allocated and the mapped user pages are copied to/from this
buffer for write/read commands.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index af29b0e0b092..971ef086ed63 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -552,6 +552,7 @@ struct nvme_ns {
 
         int ns_id;
         int lba_shift;
+        int ms;
         u64 mode_select_num_blocks;
         u32 mode_select_block_len;
 };