[PATCH v2 1/6] io_uring: introduce io_is_compat()

[Pavel Begunkov <asml.silence@gmail.com>]

A preparation patch adding a simple helper for gauging the compat state.
It'll help us to optimise and compile out more code in the following
commits.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 io_uring/io_uring.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h
index 650f81dac5d0..daf0e3b740ee 100644
--- a/io_uring/io_uring.h
+++ b/io_uring/io_uring.h
@@ -147,6 +147,11 @@ static inline void io_lockdep_assert_cq_locked(struct io_ring_ctx *ctx)
 #endif
 }
 
+static inline bool io_is_compat(struct io_ring_ctx *ctx)
+{
+	return IS_ENABLED(CONFIG_COMPAT) && unlikely(ctx->compat);
+}
+
 static inline void io_req_task_work_add(struct io_kiocb *req)
 {
 	__io_req_task_work_add(req, 0);
-- 
2.48.1