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-rw-r--r--net/ceph/ceph_common.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index ee71ea26777..a98c03ff853 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -26,6 +26,22 @@
#include "crypto.h"
+/*
+ * Module compatibility interface. For now it doesn't do anything,
+ * but its existence signals a certain level of functionality.
+ *
+ * The data buffer is used to pass information both to and from
+ * libceph. The return value indicates whether libceph determines
+ * it is compatible with the caller (from another kernel module),
+ * given the provided data.
+ *
+ * The data pointer can be null.
+ */
+bool libceph_compatible(void *data)
+{
+ return false;
+}
+EXPORT_SYMBOL(libceph_compatible);
/*
* find filename portion of a path (/foo/bar/baz -> baz)