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authorAkinobu Mita <akinobu.mita@gmail.com>2009-12-15 16:46:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 07:20:06 -0800
commitf4c54fcf3ae6bdc0abf4e777a9499e2581bc8e94 (patch)
tree1200ce82c805679e5a18e02516ceac8f6bec25b4 /fs/hpfs
parentc2923c3a3ed71563891585bf58481bcdde72f403 (diff)
downloadlinux-linaro-f4c54fcf3ae6bdc0abf4e777a9499e2581bc8e94.tar.gz
hpfs: use bitmap_weight()
Use bitmap_weight instead of doing hweight32 for each 32bit in bitmap. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/hpfs')
-rw-r--r--fs/hpfs/super.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index cf6fe4ad651..cadc4ce4865 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -14,6 +14,7 @@
#include <linux/magic.h>
#include <linux/sched.h>
#include <linux/smp_lock.h>
+#include <linux/bitmap.h>
/* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */
@@ -115,12 +116,13 @@ static void hpfs_put_super(struct super_block *s)
unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
{
struct quad_buffer_head qbh;
- unsigned *bits;
- unsigned i, count;
- if (!(bits = hpfs_map_4sectors(s, secno, &qbh, 4))) return 0;
- count = 0;
- for (i = 0; i < 2048 / sizeof(unsigned); i++)
- count += hweight32(bits[i]);
+ unsigned long *bits;
+ unsigned count;
+
+ bits = hpfs_map_4sectors(s, secno, &qbh, 4);
+ if (!bits)
+ return 0;
+ count = bitmap_weight(bits, 2048 * BITS_PER_BYTE);
hpfs_brelse4(&qbh);
return count;
}