io_uring: add io_uring_cmd_get_async_data helper

Add a helper function in include/linux/io_uring/cmd.h to read the
async_data pointer from a struct io_uring_cmd.

Signed-off-by: Mark Harmstone <maharmstone@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/include/linux/io_uring/cmd.h b/include/linux/io_uring/cmd.h
index 3df6636ec3a32e752acac810285be4b9612470c4..b0aeec834c1db5b50d34a7c3df651de810c003f0 100644 (file)
--- a/include/linux/io_uring/cmd.h
+++ b/include/linux/io_uring/cmd.h
@@ -118,4 +118,9 @@ static inline struct task_struct *io_uring_cmd_get_task(struct io_uring_cmd *cmd
        return cmd_to_io_kiocb(cmd)->task;
 }
 
+static inline struct io_uring_cmd_data *io_uring_cmd_get_async_data(struct io_uring_cmd *cmd)
+{
+       return cmd_to_io_kiocb(cmd)->async_data;
+}
+
 #endif /* _LINUX_IO_URING_CMD_H */