The patch titled
hpfs: use bitmap_weight()
has been added to the -mm tree. Its filename is
hpfs-use-bitmap_weight.patch
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------------------------------------------------------
Subject: hpfs: use bitmap_weight()
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Use bitmap_weight instead of doing hweight32 for each 32bit in bitmap.
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Mikulas Patocka <mikulas@xxxxxxxxxxxxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/hpfs/super.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff -puN fs/hpfs/super.c~hpfs-use-bitmap_weight fs/hpfs/super.c
--- a/fs/hpfs/super.c~hpfs-use-bitmap_weight
+++ a/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_
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;
}
_
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
linux-next.patch
hpfs-use-hweight32.patch
hpfs-use-bitmap_weight.patch
qnx4-use-hweight8.patch
bitmap-introduce-bitmap_set-bitmap_clear-bitmap_find_next_zero_area.patch
iommu-helper-use-bitmap-library.patch
isp1362-hcd-use-bitmap_find_next_zero_area.patch
mlx4-use-bitmap_find_next_zero_area.patch
sparc-use-bitmap_find_next_zero_area.patch
ia64-use-bitmap_find_next_zero_area.patch
genalloc-use-bitmap_find_next_zero_area.patch
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