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-rw-r--r--fs/ntfs/inode.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index 82c5085559c..9938034762c 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -27,6 +27,7 @@
#include <linux/pagemap.h>
#include <linux/quotaops.h>
#include <linux/slab.h>
+#include <linux/log2.h>
#include "aops.h"
#include "attrib.h"
@@ -1570,7 +1571,7 @@ static int ntfs_read_locked_index_inode(struct inode *base_vi, struct inode *vi)
ntfs_debug("Index collation rule is 0x%x.",
le32_to_cpu(ir->collation_rule));
ni->itype.index.block_size = le32_to_cpu(ir->index_block_size);
- if (ni->itype.index.block_size & (ni->itype.index.block_size - 1)) {
+ if (!is_power_of_2(ni->itype.index.block_size)) {
ntfs_error(vi->i_sb, "Index block size (%u) is not a power of "
"two.", ni->itype.index.block_size);
goto unm_err_out;