Re: [PATCH V5 0/2] ublk: add io_uring based userspace block driver
From: Jens Axboe
Date: Wed Jul 13 2022 - 22:54:33 EST
On Wed, 13 Jul 2022 22:07:09 +0800, Ming Lei wrote:
> ublk driver is one kernel driver for implementing generic userspace block
> device/driver, which delivers io request from ublk block device(/dev/ublkbN) into
> ublk server which is the userspace part of ublk for communicating
> with ublk driver and handling specific io logic by its target module.
> Another thing ublk driver handles is to copy data between user space buffer
> and request/bio's pages, or take zero copy if mm is ready for support it in
> future. ublk driver doesn't handle any IO logic of the specific driver, so
> it is small/simple, and all io logics are done by the target code in ublkserver.
[1/2] ublk_drv: add io_uring based userspace block driver
[2/2] ublk_drv: support to complete io command via task_work_add