Replacing n & (n - 1) for power of 2 check by is_power_of_2(n)
Signed-off-by: vignesh babu <[email protected]>
---
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index b532a73..8152f79 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"
@@ -1574,7 +1575,7 @@ 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;
diff --git a/fs/ntfs/logfile.c b/fs/ntfs/logfile.c
index acfed32..00b2d02 100644
--- a/fs/ntfs/logfile.c
+++ b/fs/ntfs/logfile.c
@@ -26,6 +26,7 @@
#include <linux/highmem.h>
#include <linux/buffer_head.h>
#include <linux/bitops.h>
+#include <linux/log2.h>
#include "attrib.h"
#include "aops.h"
@@ -63,9 +64,8 @@ static bool ntfs_check_restart_page_header(struct inode *vi,
logfile_log_page_size = le32_to_cpu(rp->log_page_size);
if (logfile_system_page_size < NTFS_BLOCK_SIZE ||
logfile_log_page_size < NTFS_BLOCK_SIZE ||
- logfile_system_page_size &
- (logfile_system_page_size - 1) ||
- logfile_log_page_size & (logfile_log_page_size - 1)) {
+ !is_power_of_2(logfile_system_page_size) ||
+ !is_power_of_2(logfile_log_page_size)) {
ntfs_error(vi->i_sb, "$LogFile uses unsupported page size.");
return false;
}
--
Vignesh Babu BM
_____________________________________________________________
"Why is it that every time I'm with you, makes me believe in magic?"
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