lkml.org 
[lkml]   [2020]   [Aug]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v4 3/3] io_uring: allow disabling rings during the creation
On Thu, Aug 13, 2020 at 05:32:54PM +0200, Stefano Garzarella wrote:
> This patch adds a new IORING_SETUP_R_DISABLED flag to start the
> rings disabled, allowing the user to register restrictions,
> buffers, files, before to start processing SQEs.
>
> When IORING_SETUP_R_DISABLED is set, SQE are not processed and
> SQPOLL kthread is not started.
>
> The restrictions registration are allowed only when the rings
> are disable to prevent concurrency issue while processing SQEs.
>
> The rings can be enabled using IORING_REGISTER_ENABLE_RINGS
> opcode with io_uring_register(2).
>
> Suggested-by: Jens Axboe <axboe@kernel.dk>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>

Reviewed-by: Kees Cook <keescook@chromium.org>

Where can I find the io_uring selftests? I'd expect an additional set of
patches to implement the selftests for this new feature.

--
Kees Cook

\
 
 \ /
  Last update: 2020-08-26 21:51    [W:0.132 / U:0.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site