On Mon, Jan 5, 2026 at 1:05 PM Caleb Sander Mateos
<csander@purestorage.com> wrote:
>
> io_register_enable_rings() checks that the io_ring_ctx is
> IORING_SETUP_R_DISABLED, which ensures submitter_task hasn't been
> assigned by io_uring_create() or a previous io_register_enable_rings()
> call. So drop the redundant check that submitter_task is NULL.
>
> Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
> ---
> io_uring/register.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/io_uring/register.c b/io_uring/register.c
> index 8104728af294..78434869270c 100644
> --- a/io_uring/register.c
> +++ b/io_uring/register.c
> @@ -178,11 +178,11 @@ static __cold int io_register_restrictions(struct io_ring_ctx *ctx,
> static int io_register_enable_rings(struct io_ring_ctx *ctx)
> {
> if (!(ctx->flags & IORING_SETUP_R_DISABLED))
> return -EBADFD;
>
> - if (ctx->flags & IORING_SETUP_SINGLE_ISSUER && !ctx->submitter_task) {
> + if (ctx->flags & IORING_SETUP_SINGLE_ISSUER) {
> ctx->submitter_task = get_task_struct(current);
> /*
> * Lazy activation attempts would fail if it was polled before
> * submitter_task is set.
> */
> --
> 2.45.2
>
Reviewed-by: Joanne Koong <joannelkoong@gmail.com>