Commit da8c9690 authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring: mark us with IORING_FEAT_SUBMIT_STABLE 



If this flag is set, applications can be certain that any data for
async offload has been consumed when the kernel has consumed the
SQE.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent f499a021

fs/io_uring.c

+2 −1
Original line number Diff line number Diff line
@@ -5077,7 +5077,8 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p) 
	if (ret < 0)

		goto err;



	p->features = IORING_FEAT_SINGLE_MMAP | IORING_FEAT_NODROP;

	p->features = IORING_FEAT_SINGLE_MMAP | IORING_FEAT_NODROP |

			IORING_FEAT_SUBMIT_STABLE;

	trace_io_uring_create(ret, ctx, p->sq_entries, p->cq_entries, p->flags);

	return ret;

err:

include/uapi/linux/io_uring.h

+1 −0
Original line number Diff line number Diff line
@@ -157,6 +157,7 @@ struct io_uring_params { 
 */

#define IORING_FEAT_SINGLE_MMAP		(1U << 0)

#define IORING_FEAT_NODROP		(1U << 1)

#define IORING_FEAT_SUBMIT_STABLE	(1U << 2)



/*

 * io_uring_register(2) opcodes and arguments