1 files changed, 9 insertions, 0 deletions

diff --git a/fs/btrfs/hash.c b/fs/btrfs/hash.c
index 6c2a71a46c7d..22519b8e0cf2 100644
--- a/fs/btrfs/hash.c
+++ b/fs/btrfs/hash.c
@@ -10,6 +10,7 @@
  * License.
  */
 
+#include <linux/types.h>
 #define DELTA 0x9E3779B9
 
 static void TEA_transform(__u32 buf[2], __u32 const in[])
@@ -63,6 +64,14 @@ int btrfs_name_hash(const char *name, int len, u64 *hash_result)
         const char      *p;
         __u32           in[8], buf[2];
 
+        if (len == 1 && *name == '.') {
+                *hash_result = 1;
+                return 0;
+        } else if (len == 2 && name[0] == '.' && name[1] == '.') {
+                *hash_result = 2;
+                return 0;
+        }
+
         /* Initialize the default seed for the hash checksum functions */
         buf[0] = 0x67452301;
         buf[1] = 0xefcdab89;