[PATCH 1/6] io_uring: make task_work pending check dependent on ring type

[Jens Axboe <axboe@kernel.dk>]

There's no need to check for generic task_work for DEFER_TASKRUN, if we
have local task_work pending. This avoids dipping into the huge
task_struct, if we have normal task_work pending.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 io_uring/io_uring.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h
index 12abee607e4a..214f9f175102 100644
--- a/io_uring/io_uring.h
+++ b/io_uring/io_uring.h
@@ -354,7 +354,9 @@ static inline bool io_local_work_pending(struct io_ring_ctx *ctx)
 
 static inline bool io_task_work_pending(struct io_ring_ctx *ctx)
 {
-	return task_work_pending(current) || io_local_work_pending(ctx);
+	if (ctx->flags & IORING_SETUP_DEFER_TASKRUN && io_local_work_pending(ctx))
+		return true;
+	return task_work_pending(current);
 }
 
 static inline void io_tw_lock(struct io_ring_ctx *ctx, struct io_tw_state *ts)
-- 
2.45.2