diff options
| author | Vignesh Babu BM <vignesh.babu@wipro.com> | 2007-05-08 00:24:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 11:14:59 -0700 |
| commit | e1b5c1d3da05c91129120d045dfcdfc7761f44f1 (patch) | |
| tree | 0d29f32fbad55a9cc90b05ef1974103b6afe4ea9 | |
| parent | e7d709c096487078652a1384d7a2d0e4459e18b6 (diff) | |
is_power_of_2 in fs/hfs
Replace (n & (n-1)) in the context of power of 2 checks with is_power_of_2
Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/hfs/btree.c | 3 | ||||
| -rw-r--r-- | fs/hfsplus/btree.c | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/fs/hfs/btree.c b/fs/hfs/btree.c index 5fd0ed71f923..8a3a650abc87 100644 --- a/fs/hfs/btree.c +++ b/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 super_block *sb, u32 id, btree_keycmp ke 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 --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c index a9b9e872e29a..90ebab753d30 100644 --- a/fs/hfsplus/btree.c +++ b/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 super_block *sb, u32 id) } 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; |