[PATCH v7 3/3] io_uring/register: drop io_register_enable_rings() submitter_task check

From: Caleb Sander Mateos

Date: Mon Jan 05 2026 - 16:07:06 EST


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@xxxxxxxxxxxxxxx>
---
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