first commit

1 files changed, 19 insertions, 0 deletions

diff --git a/include/linux/crush/mapper.h b/include/linux/crush/mapper.h
new file mode 100644
index 000000000..5772dee3e
--- /dev/null
+++ b/include/linux/crush/mapper.h
@@ -0,0 +1,19 @@
+#ifndef CEPH_CRUSH_MAPPER_H
+#define CEPH_CRUSH_MAPPER_H
+
+/*
+ * CRUSH functions for find rules and then mapping an input to an
+ * output set.
+ *
+ * LGPL2
+ */
+
+#include <linux/crush/crush.h>
+
+extern int crush_find_rule(const struct crush_map *map, int ruleset, int type, int size);
+extern int crush_do_rule(const struct crush_map *map,
+			 int ruleno,
+			 int x, int *result, int result_max,
+			 const __u32 *weights);
+
+#endif