On Sat, Jun 21, 2025 at 11:10:14AM -0600, Caleb Sander Mateos wrote:
> UBLK_F_SUPPORT_ZERO_COPY has a very old comment describing the initial
> idea for how zero-copy would be implemented. The actual implementation
> added in commit 1f6540e2aabb ("ublk: zc register/unregister bvec") uses
> io_uring registered buffers rather than shared memory mapping.
> Remove the inaccurate remarks about mapping ublk request memory into the
> ublk server's address space and requiring 4K block size. Replace them
> with a description of the current zero-copy mechanism.
>
> Signed-off-by: Caleb Sander Mateos <csander@xxxxxxxxxxxxxxx>
Reviewed-by: Ming Lei <ming.lei@xxxxxxxxxx>
thanks,
Ming
