The patch titled
is_power_of_2 in fs/block_dev.c
has been added to the -mm tree. Its filename is
is_power_of_2-in-fs-block_devc.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: is_power_of_2 in fs/block_dev.c
From: Vignesh Babu BM <vignesh.babu@xxxxxxxxx>
Replace (n & (n-1)) in the context of power of 2 checks with is_power_of_2
Signed-off-by: vignesh babu <vignesh.babu@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/block_dev.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN fs/block_dev.c~is_power_of_2-in-fs-block_devc fs/block_dev.c
--- a/fs/block_dev.c~is_power_of_2-in-fs-block_devc
+++ a/fs/block_dev.c
@@ -22,6 +22,7 @@
#include <linux/mount.h>
#include <linux/uio.h>
#include <linux/namei.h>
+#include <linux/log2.h>
#include <asm/uaccess.h>
#include "internal.h"
@@ -65,7 +66,7 @@ static void kill_bdev(struct block_devic
int set_blocksize(struct block_device *bdev, int size)
{
/* Size must be a power of two, and between 512 and PAGE_SIZE */
- if (size > PAGE_SIZE || size < 512 || (size & (size-1)))
+ if (size > PAGE_SIZE || size < 512 || !is_power_of_2(size))
return -EINVAL;
/* Size cannot be smaller than the size supported by the device */
_
Patches currently in -mm which might be from vignesh.babu@xxxxxxxxx are
is_power_of_2-in-fat.patch
is_power_of_2-in-fs-hfs.patch
is_power_of_2-in-fs-block_devc.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
