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-rw-r--r--Documentation/filesystems/overlayfs.txt12
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/filesystems/overlayfs.txt b/Documentation/filesystems/overlayfs.txt
index b37092886dcc..006ea480506d 100644
--- a/Documentation/filesystems/overlayfs.txt
+++ b/Documentation/filesystems/overlayfs.txt
@@ -208,3 +208,15 @@ Changes to the underlying filesystems while part of a mounted overlay
filesystem are not allowed. If the underlying filesystem is changed,
the behavior of the overlay is undefined, though it will not result in
a crash or deadlock.
+
+Testsuite
+---------
+
+There's testsuite developed by David Howells at:
+
+ git://git.infradead.org/users/dhowells/unionmount-testsuite.git
+
+Run as root:
+
+ # cd unionmount-testsuite
+ # ./run --ov