ext4: Use is_power_of_2() for clarity
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 3f4475d..3e509bc 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1483,7 +1483,7 @@
return 0;
if (option < 0 || option > (1 << 30))
return 0;
- if (option & (option - 1)) {
+ if (!is_power_of_2(option)) {
printk(KERN_ERR "EXT4-fs: inode_readahead_blks"
" must be a power of 2\n");
return 0;
@@ -2101,8 +2101,7 @@
if (parse_strtoul(buf, 0x40000000, &t))
return -EINVAL;
- /* inode_readahead_blks must be a power of 2 */
- if (t & (t-1))
+ if (!is_power_of_2(t))
return -EINVAL;
sbi->s_inode_readahead_blks = t;