fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ioctls

[pandora-kernel.git] / Documentation / usb / anchors.txt

diff --git a/Documentation/usb/anchors.txt b/Documentation/usb/anchors.txt
index 5e6b64c..fe6a99a 100644 (file)
--- a/Documentation/usb/anchors.txt
+++ b/Documentation/usb/anchors.txt
@@ -27,7 +27,7 @@ Association and disassociation of URBs with anchors
 
 An association of URBs to an anchor is made by an explicit
 call to usb_anchor_urb(). The association is maintained until
-an URB is finished by (successfull) completion. Thus disassociation
+an URB is finished by (successful) completion. Thus disassociation
 is automatic. A function is provided to forcibly finish (kill)
 all URBs associated with an anchor.
 Furthermore, disassociation can be made with usb_unanchor_urb()
@@ -52,6 +52,11 @@ Therefore no guarantee is made that the URBs have been unlinked when
 the call returns. They may be unlinked later but will be unlinked in
 finite time.
 
+usb_scuttle_anchored_urbs()
+---------------------------
+
+All URBs of an anchor are unanchored en masse.
+
 usb_wait_anchor_empty_timeout()
 -------------------------------
 
@@ -59,4 +64,16 @@ This function waits for all URBs associated with an anchor to finish
 or a timeout, whichever comes first. Its return value will tell you
 whether the timeout was reached.
 
+usb_anchor_empty()
+------------------
+
+Returns true if no URBs are associated with an anchor. Locking
+is the caller's responsibility.
+
+usb_get_from_anchor()
+---------------------
 
+Returns the oldest anchored URB of an anchor. The URB is unanchored
+and returned with a reference. As you may mix URBs to several
+destinations in one anchor you have no guarantee the chronologically
+first submitted URB is returned.