io_uring: don't use int for ABI

commit cf73d9970ea4f8cace5d8f02d2565a2723003112 upstream.

__kernel_rwf_t is defined as int, the actual size of which is
implementation defined. It won't go well if some compiler / archs
ever defines it as i64, so replace it with __u32, hoping that
there is no one using i16 for it.

Cc: stable@vger.kernel.org
Fixes: 2b188cc1bb857 ("Add io_uring IO interface")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/47c666c4ee1df2018863af3a2028af18feef11ed.1751412511.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index cfd17e382082fa38427bbc8dcba3d89b022afe4c..78be93899699b136c150c3dfef1b19822b8a8836 100644 (file)
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -50,7 +50,7 @@ struct io_uring_sqe {
        };
        __u32   len;            /* buffer size or number of iovecs */
        union {
-               __kernel_rwf_t  rw_flags;
+               __u32           rw_flags;
                __u32           fsync_flags;
                __u16           poll_events;    /* compatibility */
                __u32           poll32_events;  /* word-reversed for BE */