1 files changed, 5 insertions, 1 deletions
diff --git a/super1.c b/super1.c
index 7664883..8b0d6ff 100644
--- a/super1.c
+++ b/super1.c
@@ -1551,11 +1551,15 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
 	else if (strcmp(update, "nofailfast") == 0)
 		sb->devflags &= ~FailFast1;
 	else if (strcmp(update, "layout-original") == 0 ||
-		 strcmp(update, "layout-alternate") == 0) {
+		 strcmp(update, "layout-alternate") == 0 ||
+		 strcmp(update, "layout-unspecified") == 0) {
 		if (__le32_to_cpu(sb->level) != 0) {
 			pr_err("%s: %s only supported for RAID0\n",
 			       devname?:"", update);
 			rv = -1;
+		} else if (strcmp(update, "layout-unspecified") == 0) {
+			sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_RAID0_LAYOUT);
+			sb->layout = 0;
 		} else {
 			sb->feature_map |= __cpu_to_le32(MD_FEATURE_RAID0_LAYOUT);
 			sb->layout = __cpu_to_le32(update[7] == 'o' ? 1 : 2);