diff --git a/Documentation/filesystems/9p.rst b/Documentation/filesystems/9p.rst
index be3504ca034a..65809a1dad21 100644
--- a/Documentation/filesystems/9p.rst
+++ b/Documentation/filesystems/9p.rst
@@ -23,13 +23,10 @@ the 9p client is available in the form of a USENIX paper:
 Other applications are described in the following papers:
 
 	* XCPU & Clustering
-	  http://xcpu.org/papers/xcpu-talk.pdf
 	* KVMFS: control file system for KVM
-	  http://xcpu.org/papers/kvmfs.pdf
 	* CellFS: A New Programming Model for the Cell BE
-	  http://xcpu.org/papers/cellfs-talk.pdf
 	* PROSE I/O: Using 9p to enable Application Partitions
-	  http://plan9.escet.urjc.es/iwp9/cready/PROSE_iwp9_2006.pdf
+	  http://web.archive.org/web/20110101152020/http://plan9.escet.urjc.es/iwp9/cready/PROSE_iwp9_2006.pdf
 	* VirtFS: A Virtualization Aware File System pass-through
 	  https://kernel.org/doc/ols/2010/ols2010-pages-109-120.pdf