The patch titled
is_power_of_2 in fs/hfs
has been added to the -mm tree. Its filename is
is_power_of_2-in-fs-hfs.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/hfs
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>
Cc: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/hfs/btree.c | 3 ++-
fs/hfsplus/btree.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff -puN fs/hfs/btree.c~is_power_of_2-in-fs-hfs fs/hfs/btree.c
--- a/fs/hfs/btree.c~is_power_of_2-in-fs-hfs
+++ a/fs/hfs/btree.c
@@ -9,6 +9,7 @@
*/
#include <linux/pagemap.h>
+#include <linux/log2.h>
#include "btree.h"
@@ -76,7 +77,7 @@ struct hfs_btree *hfs_btree_open(struct
tree->depth = be16_to_cpu(head->depth);
size = tree->node_size;
- if (!size || size & (size - 1))
+ if (!is_power_of_2(size))
goto fail_page;
if (!tree->node_count)
goto fail_page;
diff -puN fs/hfsplus/btree.c~is_power_of_2-in-fs-hfs fs/hfsplus/btree.c
--- a/fs/hfsplus/btree.c~is_power_of_2-in-fs-hfs
+++ a/fs/hfsplus/btree.c
@@ -10,6 +10,7 @@
#include <linux/slab.h>
#include <linux/pagemap.h>
+#include <linux/log2.h>
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
@@ -69,7 +70,7 @@ struct hfs_btree *hfs_btree_open(struct
}
size = tree->node_size;
- if (!size || size & (size - 1))
+ if (!is_power_of_2(size))
goto fail_page;
if (!tree->node_count)
goto fail_page;
_
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
-
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