/* a set of flags to control handling of request structures */
#define NTVFS_ASYNC_STATE_ASYNC (1<<1) /* the backend will answer this one later */
#define NTVFS_ASYNC_STATE_MAY_ASYNC (1<<2) /* the backend is allowed to answer async */
+#define NTVFS_ASYNC_STATE_CLOSE (1<<3) /* the backend session should be closed */
/* the ntvfs_async_state structure allows backend functions to
delay replying to requests. To use this, the front end must