NVMe passthru takes a single buffer pointer. This enables using multiple buffers for passthru, similiar to readv/writev. First patch is prep, while second one adds vectored-io abililty to NVME_IOCTL_IO64_CMD. Kanchan Joshi (2): block: introduce and export blk_rq_map_user_vec nvme: add vectored-io support for user passthru block/blk-map.c | 19 +++++++++++++++++++ drivers/nvme/host/ioctl.c | 9 ++++++--- include/linux/blk-mq.h | 2 ++ include/uapi/linux/nvme_ioctl.h | 4 ++++ 4 files changed, 31 insertions(+), 3 deletions(-) -- 2.25.1
