On 9/6/23 18:38, Nitesh Shetty wrote:
Add support for handling nvme_cmd_copy command on target. For bdev-ns if backing device supports copy offload we call device copy offload (blkdev_copy_offload). In case of partial completion from above or absence of device copy offload capability, we fallback to copy emulation (blkdev_copy_emulation) For file-ns we call vfs_copy_file_range to service our request. Currently target always shows copy capability by setting NVME_CTRL_ONCS_COPY in controller ONCS. loop target has copy support, which can be used to test copy offload. trace event support for nvme_cmd_copy. Signed-off-by: Nitesh Shetty <nj.shetty@xxxxxxxxxxx> Signed-off-by: Anuj Gupta <anuj20.g@xxxxxxxxxxx> --- drivers/nvme/target/admin-cmd.c | 9 ++- drivers/nvme/target/io-cmd-bdev.c | 97 +++++++++++++++++++++++++++++++ drivers/nvme/target/io-cmd-file.c | 50 ++++++++++++++++ drivers/nvme/target/nvmet.h | 4 ++ drivers/nvme/target/trace.c | 19 ++++++ 5 files changed, 177 insertions(+), 2 deletions(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@xxxxxxx +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Ivo Totev, Andrew Myers, Andrew McDonald, Martje Boudien Moerman
