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-rw-r--r--include/linux/crush/crush.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/crush/crush.h b/include/linux/crush/crush.h
index 83543c504b5..3d6a1292856 100644
--- a/include/linux/crush/crush.h
+++ b/include/linux/crush/crush.h
@@ -19,10 +19,11 @@
#define CRUSH_MAGIC 0x00010000ul /* for detecting algorithm revisions */
-
#define CRUSH_MAX_DEPTH 10 /* max crush hierarchy depth */
+#define CRUSH_ITEM_UNDEF 0x7fffffff /* undefined result */
+
/*
* CRUSH uses user-defined "rules" to describe how inputs should be
* mapped to devices. A rule consists of sequence of steps to perform