1 files changed, 3 insertions, 5 deletions

diff --git a/fs/ext4/bitmap.c b/fs/ext4/bitmap.c
index b319721da26a..7e86a6d28c64 100644
--- a/fs/ext4/bitmap.c
+++ b/fs/ext4/bitmap.c
@@ -15,15 +15,13 @@
 
 static const int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};
 
-unsigned int ext4_count_free(struct buffer_head *map, unsigned int numchars)
+unsigned int ext4_count_free(char *bitmap, unsigned int numchars)
 {
         unsigned int i, sum = 0;
 
-        if (!map)
-                return 0;
         for (i = 0; i < numchars; i++)
-                sum += nibblemap[map->b_data[i] & 0xf] +
-                        nibblemap[(map->b_data[i] >> 4) & 0xf];
+                sum += nibblemap[bitmap[i] & 0xf] +
+                        nibblemap[(bitmap[i] >> 4) & 0xf];
         return sum;
 }