1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/futex.c b/kernel/futex.c
index 91691e9..5c305c0 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -60,6 +60,7 @@
 #include <linux/pid.h>
 #include <linux/nsproxy.h>
 #include <linux/ptrace.h>
+#include <linux/hugetlb.h>
 
 #include <asm/futex.h>
 
@@ -363,7 +364,7 @@ again:
 	} else {
 		key->both.offset |= FUT_OFF_INODE; /* inode-based key */
 		key->shared.inode = page_head->mapping->host;
-		key->shared.pgoff = page_head->index;
+		key->shared.pgoff = basepage_index(page);
 	}
 
 	get_futex_key_refs(key);