Signed-off-by: Robert P. J. Day <rpjday@xxxxxxxxxxxxxx>
---
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 2958f4e..479d5ef 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1479,7 +1479,7 @@ set_qf_format:
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;
@@ -2092,7 +2092,7 @@ static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
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;
========================================================================
Robert P. J. Day Waterloo, Ontario, CANADA
Linux Consulting, Training and Annoying Kernel Pedantry.
Web page: http://crashcourse.ca
Linked In: http://www.linkedin.com/in/rpjday
Twitter: http://twitter.com/rpjday
========================================================================
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