Re: [PATCH v15 12/12] null_blk: add support for copy offload

From: Hannes Reinecke
Date: Fri Sep 08 2023 - 02:16:46 EST


On 9/6/23 18:38, Nitesh Shetty wrote:
Implementation is based on existing read and write infrastructure.
copy_max_bytes: A new configfs and module parameter is introduced, which
can be used to set hardware/driver supported maximum copy limit.
Only request based queue mode will support for copy offload.
Added tracefs support to copy IO tracing.

Suggested-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Anuj Gupta <anuj20.g@xxxxxxxxxxx>
Signed-off-by: Nitesh Shetty <nj.shetty@xxxxxxxxxxx>
Signed-off-by: Vincent Fu <vincent.fu@xxxxxxxxxxx>
---
Documentation/block/null_blk.rst | 5 ++
drivers/block/null_blk/main.c | 97 ++++++++++++++++++++++++++++++-
drivers/block/null_blk/null_blk.h | 1 +
drivers/block/null_blk/trace.h | 23 ++++++++
4 files changed, 123 insertions(+), 3 deletions(-)

Reviewed-by: Hannes Reinecke <hare@xxxxxxx>

Cheers,

Hannes
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