linux-kernel - [PATCH] io_uring: simplify IORING_SETUP_DEFER

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Message-ID: <20260206215806.1637548-1-csander@purestorage.com>
Date: Fri,  6 Feb 2026 14:58:04 -0700
From: Caleb Sander Mateos <csander@...estorage.com>
To: Jens Axboe <axboe@...nel.dk>
Cc: Caleb Sander Mateos <csander@...estorage.com>,
	io-uring@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] io_uring: simplify IORING_SETUP_DEFER_TASKRUN && !SQPOLL check

io_uring_sanitise_params() already rejects flags that include both
IORING_SETUP_SQPOLL and IORING_SETUP_DEFER_TASKRUN. So it's unnecessary
to check IORING_SETUP_SQPOLL in io_uring_create() when
IORING_SETUP_DEFER_TASKRUN has already been checked. Drop the
!(ctx->flags & IORING_SETUP_SQPOLL) check for the task_complete case.

Signed-off-by: Caleb Sander Mateos <csander@...estorage.com>
---
 io_uring/io_uring.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 5c503a3f6ecc..8949e6d7400a 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -2901,12 +2901,11 @@ static __cold int io_uring_create(struct io_ctx_config *config)
 
 	if (!(ctx->flags & IORING_SETUP_NO_SQARRAY))
 		static_branch_inc(&io_key_has_sqarray);
 
 	if ((ctx->flags & IORING_SETUP_DEFER_TASKRUN) &&
-	    !(ctx->flags & IORING_SETUP_IOPOLL) &&
-	    !(ctx->flags & IORING_SETUP_SQPOLL))
+	    !(ctx->flags & IORING_SETUP_IOPOLL))
 		ctx->task_complete = true;
 
 	if (ctx->task_complete || (ctx->flags & IORING_SETUP_IOPOLL))
 		ctx->lockless_cq = true;
 
-- 
2.45.2