vserver 2.0 rc7

[linux-2.6.git] / Documentation / tty.txt

diff --git a/Documentation/tty.txt b/Documentation/tty.txt
index 5f6dc12..3958cf7 100644 (file)
--- a/Documentation/tty.txt
+++ b/Documentation/tty.txt
@@ -93,6 +93,11 @@ write_wakeup()       -       May be called at any point between open and close.
                        ldisc must be careful about setting order and to
                        handle unexpected calls. Must not sleep.
 
+                       The driver is forbidden from calling this directly
+                       from the ->write call from the ldisc as the ldisc
+                       is permitted to call the driver write method from
+                       this function. In such a situation defer it.
+
 
 Locking