docs/filesystems/9p: fix broken external links

The xcpu.org links for xcpu-talk, kvmfs, and cellfs-talk are dead
with no archived snapshots available on the Wayback Machine, so
remove them. The PROSE I/O link redirects to a dead server; replace
it with an archived version from web.archive.org.

Signed-off-by: Aayush Patil <aayushpatilsch@gmail.com>
Message-ID: <20260510182856.17569-1-aayushpatilsch@gmail.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>

diff --git a/Documentation/filesystems/9p.rst b/Documentation/filesystems/9p.rst
index be3504ca034a83777d6c3d39058e75ba263b7609..65809a1dad21869895fd08765fbd2eae60e5e2d6 100644 (file)
--- 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