For IORING_SETUP_SINGLE_ISSUER io_ring_ctx's, io_register_resize_rings() checks that the current task is the ctx's submitter_task. However, its caller __io_uring_register() already checks this. Drop the redundant check in io_register_resize_rings(). Signed-off-by: Caleb Sander Mateos --- io_uring/register.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/io_uring/register.c b/io_uring/register.c index a1a9b2884eae..aa5f56ad8358 100644 --- a/io_uring/register.c +++ b/io_uring/register.c @@ -406,14 +406,10 @@ static int io_register_resize_rings(struct io_ring_ctx *ctx, void __user *arg) size_t size, sq_array_offset; unsigned i, tail, old_head; struct io_uring_params p; int ret; - /* for single issuer, must be owner resizing */ - if (ctx->flags & IORING_SETUP_SINGLE_ISSUER && - current != ctx->submitter_task) - return -EEXIST; /* limited to DEFER_TASKRUN for now */ if (!(ctx->flags & IORING_SETUP_DEFER_TASKRUN)) return -EINVAL; if (copy_from_user(&p, arg, sizeof(p))) return -EFAULT; -- 2.45.2