On Sat, May 06 2023 at  2:29P -0400,
Sarthak Kukreti [off-list ref] wrote:

Introduce block request REQ_OP_PROVISION. The intent of this request
is to request underlying storage to preallocate disk space for the given
block range. Block devices that support this capability will export
a provision limit within their request queues.

This patch also adds the capability to call fallocate() in mode 0
on block devices, which will send REQ_OP_PROVISION to the block
device for the specified range,

Signed-off-by: Sarthak Kukreti <redacted>

Reviewed-by: Mike Snitzer <snitzer@kernel.org>