X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fhfsplus%2Fbtree.c;h=90ebab753d306d8da95227644ab24480ef8649ca;hb=274707cff9810b784c548ed169298617a1bc3528;hp=a9b9e872e29a6296ecd4d327bd8f2653beeb7a3e;hpb=ba21fe71725f94792330ebc3034ef2b35a36276f;p=linux-2.6

diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c
index a9b9e872e2..90ebab753d 100644
--- a/fs/hfsplus/btree.c
+++ b/fs/hfsplus/btree.c
@@ -10,6 +10,7 @@
 
 #include <linux/slab.h>
 #include <linux/pagemap.h>
+#include <linux/log2.h>
 
 #include "hfsplus_fs.h"
 #include "hfsplus_raw.h"
@@ -69,7 +70,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
 	}
 
 	size = tree->node_size;
-	if (!size || size & (size - 1))
+	if (!is_power_of_2(size))
 		goto fail_page;
 	if (!tree->node_count)
 		goto fail_page;