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-rw-r--r--include/linux/idr.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/idr.h b/include/linux/idr.h
index 1af61d23be3..762c3f2c631 100644
--- a/include/linux/idr.h
+++ b/include/linux/idr.h
@@ -73,6 +73,12 @@ struct idr {
}
#define DEFINE_IDR(name) struct idr name = IDR_INIT(name)
+/* Actions to be taken after a call to _idr_sub_alloc */
+#define IDR_NEED_TO_GROW -2
+#define IDR_NOMORE_SPACE -3
+
+#define _idr_rc_to_errno(rc) ((rc) == -1 ? -EAGAIN : -ENOSPC)
+
/*
* This is what we export.
*/