[V4,0/2] io_uring: cancelable uring_cmd

Message

Ming Lei Sept. 23, 2023, 2:50 a.m. UTC

Hello,

Patch 1 retains top 8bits of  uring_cmd flags for kernel internal use.

Patch 2 implements cancelable uring_cmd.

git tree(with ublk change)

	https://github.com/ming1/linux/commits/uring_exit_and_ublk

V4:
	- return -EINVAL in case that internal bits are set
	- replace static lock checker with lockdep_assert_held(&ctx->uring_lock);

V3:
	- code style change as suggested by Jens
	- add patch 1

V2:
	- use ->uring_cmd() with IO_URING_F_CANCEL for canceling command


Ming Lei (2):
  io_uring: retain top 8bits of uring_cmd flags for kernel internal use
  io_uring: cancelable uring_cmd

 include/linux/io_uring.h       | 19 +++++++++++++
 include/linux/io_uring_types.h |  6 ++++
 include/uapi/linux/io_uring.h  |  5 ++--
 io_uring/io_uring.c            | 39 ++++++++++++++++++++++++++
 io_uring/uring_cmd.c           | 51 +++++++++++++++++++++++++++++++++-
 5 files changed, 116 insertions(+), 4 deletions(-)