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authorvignesh babu <vignesh.babu@wipro.com>2007-10-16 23:27:14 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 08:42:53 -0700
commitd8ea6cf89991000ae458e34e36379814cf202555 (patch)
tree267324741b51696f4e5642ff4f53746cee78e4cc /fs/ext4/super.c
parent3befe7ceb8d39a56a9ea55dd2da8b4bd9ddcdd36 (diff)
ext2/4: use is_power_of_2()
Replace n & (n - 1) with is_power_of_2(n) Signed-off-by: vignesh babu <vignesh.babu@wipro.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 0e829cc8a18..4c8d31c6145 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1738,7 +1738,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) {
if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT ||
sbi->s_desc_size > EXT4_MAX_DESC_SIZE ||
- sbi->s_desc_size & (sbi->s_desc_size - 1)) {
+ !is_power_of_2(sbi->s_desc_size)) {
printk(KERN_ERR
"EXT4-fs: unsupported descriptor size %lu\n",
sbi->s_desc_size);