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-rw-r--r--fs/btrfs/hash.c9
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;