1 files changed, 2 insertions, 0 deletions

diff --git a/security/selinux/ss/ebitmap.h b/security/selinux/ss/ebitmap.h
index e38a327dd703..f283b4367f54 100644
--- a/security/selinux/ss/ebitmap.h
+++ b/security/selinux/ss/ebitmap.h
@@ -21,6 +21,8 @@
 #define EBITMAP_UNIT_SIZE       BITS_PER_LONG
 #define EBITMAP_SIZE            (EBITMAP_UNIT_NUMS * EBITMAP_UNIT_SIZE)
 #define EBITMAP_BIT             1ULL
+#define EBITMAP_SHIFT_UNIT_SIZE(x)                                      \
+        (((x) >> EBITMAP_UNIT_SIZE / 2) >> EBITMAP_UNIT_SIZE / 2)
 
 struct ebitmap_node {
         struct ebitmap_node *next;