Commit da8c9690 authored by Jens Axboe's avatar Jens Axboe

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
...@@ -5077,7 +5077,8 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p) ...@@ -5077,7 +5077,8 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p)
if (ret < 0) if (ret < 0)
goto err; 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); trace_io_uring_create(ret, ctx, p->sq_entries, p->cq_entries, p->flags);
return ret; return ret;
err: err:
......
...@@ -157,6 +157,7 @@ struct io_uring_params { ...@@ -157,6 +157,7 @@ struct io_uring_params {
*/ */
#define IORING_FEAT_SINGLE_MMAP (1U << 0) #define IORING_FEAT_SINGLE_MMAP (1U << 0)
#define IORING_FEAT_NODROP (1U << 1) #define IORING_FEAT_NODROP (1U << 1)
#define IORING_FEAT_SUBMIT_STABLE (1U << 2)
/* /*
* io_uring_register(2) opcodes and arguments * io_uring_register(2) opcodes and arguments
......
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