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hpfs: use bitmap_weight()

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Use bitmap_weight instead of doing hweight32 for each 32bit in bitmap.

Signed-off-by: Akinobu Mita <[email protected]>
Cc: Mikulas Patocka <[email protected]>
Cc: Al Viro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Akinobu Mita 2009-12-15 16:46:56 -08:00 • committed by Linus Torvalds
commit f4c54fcf3a
1 changed files with 8 additions and 6 deletions
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14
fs/hpfs/super.c
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@ -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;
}