1 files changed, 8 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c
index 457fdac4c17d..36bd3e12a6d4 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -61,6 +61,14 @@ int register_blkdev(unsigned int major, const char *name)
 	/* temporary */
 	if (major == 0) {
 		for (index = ARRAY_SIZE(major_names)-1; index > 0; index--) {
+			/*
+			 * Disallow the LANANA-assigned LOCAL/EXPERIMENTAL
+			 * majors
+			 */
+			if ((60 <= index && index <= 63) ||
+					(120 <= index && index <= 127) ||
+					(240 <= index && index <= 254))
+				continue;
 			if (major_names[index] == NULL)
 				break;
 		}